阅读说明：本技术 电气设备 (Electrical device ) 是由 村上淳一 山口润哉 田贺秀行 于 2020-03-13 设计创作，主要内容包括：本发明提供一种具有端子罩的电气设备,该电气设备能够容易地进行组装作业、维修作业。所述电气设备可以具有：壳体,通过使蓄电池包在滑动方向上滑动而能够相对于该壳体拆装所述蓄电池包；蓄电池连接端子,其与安装于所述壳体的所述蓄电池包电连接；以及端子罩,其能够在保护所述蓄电池连接端子的保护位置与使所述蓄电池连接端子露出的露出位置之间移动。所述壳体可以具有沿着所述滑动方向延伸的罩轨道。所述端子罩可以具有：罩主体,其具有至少局部地覆盖所述蓄电池连接端子的形状；以及钩子,其与所述罩主体一体地形成。所述钩子可以以相对于所述罩轨道而在所述滑动方向上滑动的方式卡合于所述罩轨道。(The invention provides an electric device with a terminal cover, which can easily perform assembly operation and maintenance operation. The electric device may have: a case to which the battery pack can be attached and detached by sliding the battery pack in a sliding direction; a battery connection terminal electrically connected to the battery pack mounted to the case; and a terminal cover movable between a protection position for protecting the battery connection terminal and an exposure position for exposing the battery connection terminal. The housing may have a shroud rail extending along the sliding direction. The terminal cover may have: a cover main body having a shape at least partially covering the battery connection terminal; and a hook integrally formed with the cover main body. The hook may be engaged with the cover rail so as to slide in the sliding direction with respect to the cover rail.)

1. An electrical apparatus having:

a case to which the battery pack can be attached and detached by sliding the battery pack in a sliding direction;

a battery connection terminal electrically connected to the battery pack mounted to the case; and

a terminal cover movable between a protection position for protecting the battery connection terminal and an exposure position for exposing the battery connection terminal,

the housing has a shroud track extending along the sliding direction,

the terminal cover has:

a cover main body having a shape at least partially covering the battery connection terminal; and

a hook integrally formed with the cover main body,

the hook is engaged with the cover rail so as to be slidable in the sliding direction with respect to the cover rail.

2. The electrical device of claim 1,

the shroud track has a 1 st shroud track and a 2 nd shroud track,

the hook has: a 1 st hook that is engaged with the 1 st cover rail so as to be slidable in the sliding direction with respect to the 1 st cover rail; and a 2 nd hook that is engaged with the 2 nd cover rail so as to be slidable in the sliding direction with respect to the 2 nd cover rail.

3. The electrical device of claim 2,

the battery connection terminal is disposed between the 1 st cover rail and the 2 nd cover rail.

4. The electrical apparatus according to any one of claims 1 to 3,

the housing further has a cover disengagement prevention member capable of preventing the hook from moving or deforming so that the engagement of the hook with the cover rail is released.

5. The electrical apparatus of any one of claims 1 to 4,

further comprising: an extension spring accommodated in the interior of the housing,

the terminal cover is urged from the exposed position to the protection position by an elastic restoring force of the tension spring.

6. The electrical device of claim 5,

one end of the tension spring is held by the terminal cover,

the other end of the extension spring is held by the housing,

the housing further has:

a columnar member capable of holding the other end of the extension spring; and

a stopper member capable of preventing the other end of the extension spring from moving in an axial direction of the columnar member.

7. The electrical device of claim 5 or 6,

the housing also has a tension spring housing member configured to: surrounding the extension spring in the interior of the housing.

8. The electrical apparatus of any one of claims 5 to 7,

the shroud track is formed from: an edge portion of a through hole formed on the housing,

the hook has a shape protruding from the cover main body in a direction from the exposed position toward the protection position of the terminal cover.

9. The electrical apparatus of any one of claims 1 to 8,

the outer surface of the cover rail is provided with: a rib extending along the sliding direction.

10. The electrical apparatus of any one of claims 1 to 9,

the terminal cover further has a cover plate formed integrally with the hook,

the shroud plate extends along an outer surface of the shroud rail with a length direction along the sliding direction.

11. The electrical apparatus according to any one of claims 1 to 10,

the cover main body has: and a reinforcing member along a surface orthogonal to the sliding direction.

Technical Field

The technology disclosed in this specification relates to an electrical apparatus.

Background

Patent document 1 discloses an electrical apparatus. The electrical apparatus has: a case to which the battery pack can be attached and detached by sliding the battery pack in a sliding direction; a battery connection terminal electrically connected to the battery pack mounted to the case; and a terminal cover movable between a protection position for protecting the battery connection terminal and an exposure position for exposing the battery connection terminal. The housing has a shroud rail extending along the sliding direction. The terminal cover has: the battery pack includes a cover main body having a shape that at least partially covers the battery connection terminal, a substantially cylindrical stopper portion formed integrally with the cover main body, and a gasket fixed to a tip end of the stopper portion by a screw, wherein the stopper portion and the gasket are engaged with the cover rail so as to be slidable in a sliding direction with respect to the cover rail.

Disclosure of Invention

In the electric apparatus of patent document 1, when the terminal cover is assembled to the housing, an operation of fixing the spacer to the stopper portion with a screw is required, and thus, the assembly operation and the maintenance operation become complicated. For an electric device having a terminal cover, a technique capable of facilitating an assembling operation and a maintenance operation is desired.

The present specification discloses an electrical apparatus. The electric device may have: a case to which the battery pack can be attached and detached by sliding the battery pack in a sliding direction; a battery connection terminal electrically connected to the battery pack mounted to the case; and a terminal cover movable between a protection position for protecting the battery connection terminal and an exposure position for exposing the battery connection terminal. The housing may have a shroud rail extending along the sliding direction. The terminal cover may have: a cover main body having a shape at least partially covering the battery connection terminal, and a hook integrally formed with the cover main body. The hook may be engaged with the cover rail so as to be slidable in the sliding direction with respect to the cover rail.

According to the above electric apparatus, the terminal cover can be assembled to the housing by engaging the hook formed integrally with the cover main body with the cover rail. When the terminal cover is assembled to the housing, since the screw fixing work is not required, the assembling work and the maintenance work can be easily performed.

Drawings

Fig. 1 is a perspective view showing a charger 10 of embodiment 1 together with a battery pack 2.

Fig. 2 is a longitudinal sectional view of the charger 10 of embodiment 1.

Fig. 3 is a perspective view showing a state in which the terminal cover 34 of the charger 10 of embodiment 1 is in the protection position.

Fig. 4 is a plan view showing a state in which the terminal cover 34 of the charger 10 of embodiment 1 is in the protection position.

Fig. 5 is a perspective view showing a state in which the terminal cover 34 of the charger 10 of embodiment 1 is in an exposed position.

Fig. 6 is a plan view showing a state in which the terminal cover 34 of the charger 10 of embodiment 1 is in an exposed position.

Fig. 7 is a perspective view of the terminal cover 34 of the charger 10 according to embodiment 1 viewed from the front side and from the upper right.

Fig. 8 is a perspective view of the terminal cover 34 of the charger 10 according to example 1, viewed from the rear side and from the upper right.

Fig. 9 is a transverse sectional view of the battery pack mounting portion 14 of the charger 10 according to embodiment 1.

Fig. 10 is a perspective view of the upper case 24 of the charger 10 according to embodiment 1, viewed from the front side and from the lower right.

Fig. 11 is a longitudinal sectional view showing a state in the vicinity of the tension spring 38 in a state in which the terminal cover 34 of the charger 10 of embodiment 1 is in the protection position.

Fig. 12 is a longitudinal sectional view showing a state in the vicinity of the tension spring 38 in a state in which the terminal cover 34 of the charger 10 of embodiment 1 is in the exposed position.

Fig. 13 is a perspective view showing the inside of the case 12 in a state where the terminal cover 34 of the charger 10 of embodiment 1 is in the protection position.

Fig. 14 is a perspective view showing the inside of the case 12 in a state where the terminal cover 34 of the charger 10 of embodiment 1 is in the exposed position.

Fig. 15 is a perspective view showing the adapter 102 of embodiment 2 together with the battery pack 104 and the battery detector 106.

Fig. 16 is a perspective view of the adapter 102 of embodiment 2 with the terminal cover 114 in a protection position.

Fig. 17 is a perspective view of the adapter 102 of embodiment 2 with the terminal cover 114 in an exposed position.

Fig. 18 is a perspective view of the upper case 128 of embodiment 2 viewed from the front and the lower right.

Fig. 19 is a perspective view of the upper case 128 of example 2 viewed from the front side and the bottom right, in which the control board 116 is mounted with the device-side terminals 174 and the battery-side terminals 176.

Fig. 20 is a cross-sectional view of the adapter 102 of example 2, with the terminal cover 114 removed, as viewed from a cross-section orthogonal to the front-rear direction.

Fig. 21 is a bottom view of the upper case 128 to which the tension springs 126a and 126b and the terminal cover 114 of example 2 are attached, as viewed from below.

Fig. 22 is a perspective view of the adaptor 102 of example 2 viewed from the front side and from the lower right.

Fig. 23 is a cross-sectional view of the adapter 102 of example 2, with the terminal cover 114 removed, as viewed from a cross-section perpendicular to the left-right direction.

Fig. 24 is a perspective view of the terminal cover 114 of the adapter 102 according to example 2 viewed from the front side and from the left upper side.

Fig. 25 is a perspective view of the terminal cover 114 of the adapter 102 according to example 2 viewed from the rear side and from the left upper side.

Fig. 26 is a cross-sectional view of the adapter 102 of example 2, as viewed from a cross-section orthogonal to the front-rear direction.

Fig. 27 is a perspective view of the adapter 202 according to embodiment 3 viewed from the front side and from the left upper side.

Fig. 28 is a perspective view of the terminal cover 204 of the adapter 202 according to example 3 viewed from the front side and from the left upper side.

Description of the reference numerals

2: battery pack, 10: charger, 12: a housing, 14: battery pack mounting part, 16: charging circuit, 18: blower, 20: inner frame, 22: lower case, 24: upper case, 26: air supply port, 28: exhaust port, 30: battery rail, 30 a: support wall, 30 b: guide rib, 31: battery rail, 31 a: support wall, 31 b: guide rib, 32: battery connection terminal, 34: terminal cover, 36: cover rail, 37: cage rail, 38: tension spring, 38 a: front end, 38 b: rear end, 39: tension spring, 39 a: front end, 39 b: rear end, 40: through-hole, 41: through-hole, 42: cover main body, 42 a: front plate, 42 b: upper plate, 42 c: left plate, 42 d: right plate, 42 e: separator, 44: hook, 44 a: engaging portion, 44 b: spring mounting portion, 44 c: spring mounting hole, 45: hook, 45 a: engaging portion, 45 b: spring mounting portion, 45 c: spring mounting hole, 46: spring mounting post, 47: spring mounting post, 48: spacing rib, 49: limiting rib, 50: limiting wall, 51: limiting wall, 52: bottom plate, 53: bottom plate, 54: inner rib, 55: inner rib, 56: outer rib, 57: outer rib, 102: adapter, 104: battery pack, 104 a: battery-side mounting portion, 106: battery detector, 106 a: detector-side mounting section 108: detector mounting section, 110: battery mounting section, 112: housing, 114: terminal cover, 115: cover main body, 115 a: front plate, 115 b: upper plate, 115 c: left plate, 115 d: right plate, 115 e: separator, 115 f: reinforcing rib, 115 g: reinforcing rib, 115 h: reinforcing flange, 116: control board, 116 a: lower surface, 116 b: upper surface, 117: hook, 117 a: engaging portion, 117 b: spring mounting portion, 117 c: upper plate, 117 d: right plate, 117 e: lower plate, 117 f: convex line, 117 g: spring mounting hole, 118: bulkhead, 119: hook, 119 a: engaging portion, 119 b: spring mounting portion, 119 c: upper plate, 119 d: left panel, 119 e: lower plate, 119 f: convex strip, 119 g: spring mounting hole, 120: waterproof wall, 122: inner wall, 124: inner wall, 126 a: tension spring, 126 b: tension spring, 128: upper case, 128 a: upper surface, 130: lower case, 130 a: lower surface, 131: screw, 132 a: pin, 132 b: pin, 134: battery rail, 135: shroud rail, 136: battery rail, 137: shroud rail, 138: through-hole, 139: convex strip, 140: through-hole, 141: convex strip, 142: terminal mounting portion, 144: positioning pin, 146: screw, 150: detector track, 152: detector track, 154: terminal mounting portion, 158: step portion, 160: step portion, 164: waterproof groove, 166: waterproof groove, 168: discharge port, 170: discharge port, 174: device-side terminal, 176: battery side terminal, 180: hook, 182: compression spring, 202: adapter, 204: terminal cover, 206: cover plate, 208: cover plate

Detailed Description

Representative, non-limiting, specific examples of the present invention will be described in detail below with reference to the accompanying drawings. This detailed description is merely intended to show those skilled in the art the details of preferred embodiments for practicing the invention, and is not intended to limit the scope of the invention. In addition, additional features and inventions are disclosed below to provide further improved electrical devices and methods of making and using the same, which may be used separately from or in conjunction with other features and inventions.

In addition, combinations of features and steps disclosed in the following detailed description are not essential to practice of the present invention in the broadest sense, and are described merely to specifically describe representative specific examples of the present invention. It is to be understood that the various features of the foregoing and following representative examples, and the various features of the arrangements set forth in the independent and dependent claims are used in providing additional and useful embodiments of the present invention and are not necessarily combined as set forth in the examples set forth herein or in the order recited.

All the features described in the specification and/or claims are intended to be disclosed separately and independently from each other as limitations on the techniques disclosed at the time of application and specific matters claimed in the claims, in addition to the configurations of the features described in the embodiments and/or claims. Note that all the numerical ranges, groups, or groups are limited to specific matters in the art disclosed at the time of application and claims, and the intermediate structures are intended to be disclosed.

In several embodiments, the electrical device may have: a case to which the battery pack can be attached and detached by sliding the battery pack in a sliding direction; a battery connection terminal electrically connected to the battery pack mounted to the case; and a terminal cover movable between a protection position for protecting the battery connection terminal and an exposure position for exposing the battery connection terminal. The housing may have a shroud rail extending along the sliding direction. The terminal cover may have: a cover main body having a shape at least partially covering the battery connection terminal, and a hook formed integrally with the cover main body. The hook may be engaged with the cover rail so as to be slidable in the sliding direction with respect to the cover rail.

According to the above electric apparatus, the terminal cover can be assembled to the housing by engaging the hook formed integrally with the cover main body with the cover rail. When the terminal cover is assembled to the housing, since the screw fixing work is not required, the assembling work and the maintenance work can be easily performed.

In several embodiments, the shroud rail may have a 1 st shroud rail, a 2 nd shroud rail. The hook may have: the 1 st hook is engaged with the 1 st hook of the 1 st cover rail so as to be slidable in the sliding direction with respect to the 1 st cover rail, and the 2 nd hook is engaged with the 2 nd hook of the 2 nd cover rail so as to be slidable in the sliding direction with respect to the 2 nd cover rail.

According to the above configuration, since the 1 st hook and the 2 nd hook are slidably engaged with the 1 st cover rail and the 2 nd cover rail, respectively, the terminal cover can be prevented from rattling when the terminal cover is slid with respect to the housing. The terminal cover can be smoothly slid with respect to the housing.

In some embodiments, the battery connection terminal may be disposed between the 1 st cover rail and the 2 nd cover rail.

According to the above configuration, in the electric apparatus, the range occupied by the battery connection terminal, the terminal cover, and the cover rail can be further reduced in size in the sliding direction.

In several embodiments, the housing may further have a cover escape preventing member for preventing the hook from being moved or deformed such that the engagement of the hook with the cover rail is released.

According to the above structure, the hook can be prevented from being accidentally disengaged from the hood rail.

In several embodiments, the electrical device may also have an extension spring housed inside the housing. The terminal cover may be biased from the exposed position toward the protection position by an elastic restoring force of the tension spring.

In several embodiments, the electrical device may have: a case to which the battery pack can be attached and detached by sliding the battery pack in a sliding direction; a battery connection terminal electrically connected to the battery pack mounted to the case; a terminal cover movable in the sliding direction between a protection position for protecting the battery connection terminal and an exposure position for exposing the battery connection terminal; and an extension spring housed inside the case. The terminal cover may be biased from the exposed position toward the protection position by an elastic restoring force of the tension spring.

In the structure in which the terminal cover is biased from the exposed position to the protection position by the elastic restoring force of the compression spring, when the compression spring is deformed by buckling, the compression spring may contact with surrounding members to generate noise or damage the compression spring and the surrounding members. According to the above configuration, the terminal cover is urged from the exposed position to the protection position by the elastic restoring force of the tension spring, and therefore, it is possible to prevent the generation of noise or the damage of the component due to the buckling deformation of the spring.

In several embodiments, one end of the extension spring may be held by the terminal cover. The other end of the extension spring may be held by the housing. The housing may further have: a columnar member for holding the other end of the extension spring, and a stopper member for preventing the other end of the extension spring from moving in an axial direction of the columnar member.

With the configuration in which the other end of the tension spring is held by the columnar member, there is a possibility that the position at which the columnar member holds the other end of the tension spring is displaced along the axial direction of the columnar member when the tension spring expands and contracts. According to the above configuration, the position of the columnar member of the housing holding the other end of the tension spring can be prevented from being displaced in the axial direction of the columnar member.

In several embodiments, the housing may further have: and an extension spring housing member disposed in the housing so as to surround the extension spring.

If the end of the tension spring is detached from the mounting portion, the tension spring itself moves in the housing, and the tension spring may come into contact with other components such as a circuit board disposed inside the housing, which may cause a problem. According to the above configuration, even if the end portion of the tension spring is detached from the mounting portion, the tension spring itself can be prevented from moving in the case, and the tension spring can be prevented from coming into contact with other components such as the circuit board.

In several embodiments, the cover rail may be formed at an edge portion of a through hole formed at the housing. The hook may have: a shape protruding from the cover main body in a direction from the exposed position to the protection position.

In the case where the cover rail is formed at the edge portion of the through hole formed in the case, in a state where the battery pack is not mounted, water or foreign matter may enter from the outside of the case through the through hole, thereby affecting the operation of the tension spring. According to the above configuration, since the hook has a shape protruding from the cover main body in the direction from the exposed position toward the protection position of the terminal cover, the tension spring can be covered by the hook from the outside of the case even in a state where the battery pack is not mounted. In a state where the battery pack is not mounted, water or foreign matter entering from the outside of the case through the through hole can be inhibited from affecting the operation of the tension spring.

In several embodiments, there may be formed on an outer surface of the shroud track: a rib extending along the sliding direction.

When the convex line is not formed on the outer surface of the cover rail as described above, or when the hook repeatedly slides on the cover rail, a flaw may be formed on the outer surface of the cover rail, which may impair the appearance of the electrical device. According to the above configuration, even when the hook repeatedly slides with respect to the cover rail, the formation of the flaw on the outer surface of the cover rail can be suppressed, and the appearance of the electric device can be maintained.

In several embodiments, the terminal cover may further have a cover plate integrally formed with the hook to extend along an outer surface of the cover rail, a length direction of the cover plate being along the sliding direction.

According to the above configuration, even when a force in the rotational direction that moves the end portion of the terminal cover in the sliding direction up and down acts on the terminal cover, the terminal cover can be prevented from rattling with respect to the housing, and the terminal cover can be prevented from coming into contact with the battery connection terminal.

In several embodiments, the cover body may have: and a reinforcing member along a surface orthogonal to the sliding direction.

According to the above configuration, the rigidity of the cover main body in the direction orthogonal to the sliding direction can be improved. Thus, even when an impact is applied to the cover main body, the cover main body is prevented from being deformed, and the cover main body is prevented from coming into contact with the battery connection terminal.

(example 1)

The charger 10 of embodiment 1 will be described with reference to fig. 1 to 14. As shown in fig. 1, the charger 10 is an electric device for charging the battery pack 2. The battery pack 2 is a power source for an electric power tool (not shown) or an electric working machine (not shown), and is configured to be attachable to and detachable from the electric power tool or the electric working machine. By sliding the battery pack 2 in a predetermined sliding direction, the battery pack 10 can be attached to and detached from the charger 10. Hereinafter, a direction in which the sliding direction of the battery pack 2 is projected toward the mounting surface of the charger 10 is referred to as a front-rear direction, a direction perpendicular to the front-rear direction in the mounting surface of the charger 10 is referred to as a left-right direction, and a direction perpendicular to the mounting surface of the charger 10 is referred to as a vertical direction.

As shown in fig. 2, the charger 10 includes: a case 12, a battery pack mounting portion 14, a charging circuit 16, and a blower 18. The housing 12 has: an inner frame 20, a lower housing 22, and an upper housing 24. The lower case 22 defines the outer shape of the lower half of the charger 10, and the upper case 24 defines the outer shape of the upper half of the charger 10. The upper case 24 is fixed to the lower case 22 by a fastener (not shown). The charging circuit 16, the blower 18, and the inner frame 20 are housed inside the lower case 22 and the upper case 24, and are fixed to the lower case 22 by fasteners (not shown).

The battery pack mounting portion 14 is provided on the upper surface of the upper case 24. In the present embodiment, the charger 10 has 1 battery pack attachment portion 14, and can attach 1 battery pack 2. In contrast, the charger 10 may have 2 or more battery pack attachment portions 14, and may attach 2 or more battery packs 2. The charging circuit 16 converts ac power supplied from a power supply line (not shown) into dc power, and supplies charging power to the battery pack 2 attached to the battery pack attachment portion 14. The blower 18 sucks air from an air supply port 26 provided in the upper case 24 and discharges the air from an air discharge port 28 provided in the lower case 22. In a state where the battery pack 2 is mounted on the battery pack mounting portion 14, an air outlet (not shown) of the battery pack 2 is disposed so as to face the air inlet 26 of the upper case 24. When the charger 10 charges the battery pack 2, the charging circuit 16 drives the blower 18 to suck air from the air outlet of the battery pack 2, and thereby the cooling air flows into the battery pack 2 to cool the battery pack 2.

As shown in fig. 3 to 6, the battery pack mounting portion 14 includes: battery rails 30 and 31, battery connection terminals 32 (see fig. 5 and 6), a terminal cover 34, cover rails 36 and 37, and tension springs 38 and 39 (see fig. 6). The battery rail 30 is disposed at the left end of the battery pack mounting portion 14. The battery rail 30 includes: a support wall 30a projecting upward from the upper case 24, and a guide rib 30b projecting rightward from an upper end of the support wall 30 a. The battery rail 31 is disposed at the right end of the battery pack mounting portion 14. The battery rail 31 includes: a support wall 31a projecting upward from the upper case 24, and a guide rib 31b projecting leftward from the upper end of the support wall 31 a. When the battery pack 2 is mounted on the battery pack mounting portion 14, the guide ribs 30b and 31b enter guide grooves (not shown) formed in the battery pack 2, and the battery pack 2 is slidably held on the battery rails 30 and 31 in the sliding direction. The battery connection terminal 32 is disposed between the battery rails 30 and 31. The battery connection terminal 32 is held by the upper case 24 such that an upper portion thereof protrudes upward from the upper case 24. The battery connection terminal 32 is electrically connected to the charging circuit 16 through a wire (not shown) inside the case 12.

The terminal cover 34 is slidably held by the cover rails 36 and 37 in the sliding direction. The terminal cover 34 is slidable between a protection position (see fig. 3 and 4) for covering the battery connection terminal 32 and an exposure position (see fig. 5 and 6) for exposing the battery connection terminal 32. The terminal cover 34 is biased from the exposed position in a direction toward the protection position by the elastic restoring force of the tension springs 38 and 39. Therefore, in a state where the battery pack 2 is not mounted on the battery pack mounting portion 14, the terminal cover 34 is held at the protection position by the elastic restoring force of the tension springs 38 and 39. When the battery pack 2 is mounted on the battery pack mounting portion 14, the terminal cover 34 is pressed by the battery pack 2, and the terminal cover 34 moves from the protection position to the exposure position. Cover rails 36, 37 are formed on the upper surface of the upper housing 24. In the present embodiment, the upper case 24 has, on its upper surface: the through holes 40, 41 are formed along the sliding direction in the longitudinal direction, and the cover rails 36, 37 are formed at the edge portions of the through holes 40, 41 of the upper case 24.

As shown in fig. 7 and 8, the terminal cover 34 includes a cover main body 42 and hooks 44 and 45. The cover main body 42 and the hooks 44, 45 are integrally formed. The cover main body 42 has: a front plate 42a covering the front of the battery connection terminal 32; an upper plate 42b covering the upper side; a left plate 42c covering the left side; a right plate 42d covering the right side; and a separator 42e disposed between the adjacent battery connection terminals 32. The left plate 42c, the right plate 42d, and the partition plate 42e of the cover main body 42 are arranged along a plane parallel to the sliding direction. The hook 44 is integrally formed with the left plate 42c of the cover main body 42. The hook 44 has: an engaging portion 44a, and a spring mounting portion 44 b. The engaging portion 44a has a U-shaped cross-sectional shape that opens to the right side, and extends along the sliding direction. The spring mounting portion 44b protrudes downward from the lower surface of the engaging portion 44 a. A spring mounting hole 44c is formed in the spring mounting portion 44 b. The hook 45 is integrally formed with the right plate 42d of the cover main body 42. The hook 45 has: an engaging portion 45a, and a spring mounting portion 45 b. The engaging portion 45a has a U-shaped cross-sectional shape that opens to the left, and extends along the sliding direction. The spring attachment portion 45b protrudes downward from the lower surface of the engagement portion 45 a. The spring mounting portion 45b is formed with a spring mounting hole 45 c.

As shown in fig. 9, the terminal cover 34 is attached to the upper case 24 by elastically deforming the engagement portions 44a and 45a of the hooks 44 and 45 in the outward expanding direction and inserting the engagement portions 44a and 45a into the through holes 40 and 41. In a state where the terminal cover 34 is attached to the upper case 24, the engagement portions 44a, 45a of the hooks 44, 45 are slidably engaged with the cover rails 36, 37 in the sliding direction. Thereby, the terminal cover 34 is slidably held in the upper case 24 in the sliding direction with respect to the upper case 24.

As shown in fig. 10, the upper inner surface of the upper case 24 is formed with: and spring mounting posts 46, 47 projecting downward. As shown in fig. 11 and 12, the front end 38a of the tension spring 38 is held by the spring mounting portion 44b of the hook 44 of the terminal cover 34, and the rear end 38b of the tension spring 38 is held by the spring mounting post 46 of the upper case 24. A stopper rib 48 is formed on the outer side surface of the spring mounting post 46. Further, a stopper wall 50 is formed on the inner frame 20 corresponding to the spring mounting post 46. The rear end 38b of the extension spring 38 is restricted from moving in the axial direction of the spring mounting post 46 by the stopper wall 50 and the stopper rib 48. Likewise, the front end 39a of the tension spring 39 is held by the spring mounting portion 45b of the hook 45 of the terminal cover 34, and the rear end 39b of the tension spring 39 is held by the spring mounting post 47 of the upper case 24. A stopper rib 49 is formed on the outer side surface of the spring mounting post 47. Further, a stopper wall 51 is formed on the inner frame 20 in correspondence with the spring mounting post 47. The rear end 39b of the extension spring 39 is restricted from moving in the axial direction of the spring mounting post 47 by the stopper wall 51 and the stopper rib 49.

As shown in fig. 13 and 14, the inner frame 20 includes: a bottom plate 52 disposed below the tension spring 38, an inner rib 54 projecting upward from the bottom plate 52 at a position on the right side of the tension spring 38, and an outer rib 56 projecting upward from the bottom plate 52 at a position on the left side of the tension spring 38. The extension spring 38 extends and contracts in a space defined by the bottom plate 52, the inner rib 54, the outer rib 56, and the upper case 24 of the inner frame 20. With such a configuration, even when the front end 38a of the extension spring 38 is disengaged from the hook 44 and the rear end 38b of the extension spring 38 is disengaged from the spring mounting post 46, the extension spring 38 can be prevented from moving within the housing 12, and the extension spring 38 can be prevented from coming into contact with the charging circuit 16 and the blower 18. Also, the inner frame 20 has: a bottom plate 53 disposed below the tension spring 39, an inner rib 55 projecting upward from the bottom plate 53 at a position on the left side of the tension spring 39, and an outer rib 57 projecting upward from the bottom plate 53 at a position on the right side of the tension spring 39. The extension spring 39 extends and contracts in a space defined by the bottom plate 53, the inner rib 55, the outer rib 57, and the upper case 24 of the inner frame 20. By adopting such a structure, even in the case where the front end 39a of the tension spring 39 is disengaged from the hook 45 and in the case where the rear end 39b of the tension spring 39 is disengaged from the spring mounting post 47, the tension spring 39 can be prevented from moving within the housing 12, and the tension spring 39 can be prevented from coming into contact with the charging circuit 16 and the blower 18.

As shown in fig. 9, the outer ribs 56 of the inner frame 20 are disposed: to the left of the hooks 44 of the terminal cover 34. Therefore, the hook 44 can be prevented from moving or deforming in a direction of disengaging from the hood rail 36. Further, the outer ribs 57 of the inner frame 20 are disposed: and a position on the right side of the hook 45 of the terminal cover 34. Therefore, the hook 45 can be prevented from moving or deforming in a direction of disengaging from the hood rail 37. By adopting such a structure, the hooks 44, 45 can be prevented from being accidentally disengaged from the cover rails 36, 37.

In addition, in the above-described embodiment, the structure in which 2 cover rails 36, 37 are formed on the upper case 24 and the terminal cover 34 has 2 hooks 44, 45 has been described. In contrast to this, it is also possible to use: only a structure in which 1 cover rail is formed on the upper case 24 and the terminal cover 34 has only 1 hook is formed. Alternatively, it is also possible to employ: the upper case 24 is formed with 3 cover rails, and the terminal cover 34 has a structure having 3 hooks.

In the above embodiment, the configuration in which the through holes 40 and 41 whose growth direction is along the sliding direction are formed in the upper surface of the upper case 24, and the cover rails 36 and 37 are formed at the edge portions of the through holes 40 and 41 of the upper case 24 has been described. In contrast, the cover rails 36 and 37 may be formed by providing L-shaped rail-like portions on the upper surface of the upper case 24 without forming the through holes 40 and 41 in the upper case 24.

In the above embodiment, the case where the electrical device is the charger 10 has been described, but the electrical device may be: other types of electrical devices that can attach and detach the battery pack 2, such as an electric power tool that uses the battery pack 2 as a power source, an electric working machine, a battery diagnosis device that diagnoses the battery pack 2, and a conversion adapter that connects the battery pack 2 and a device having a different interface.

As described above, in the 1 or more embodiments, the charger 10 (an example of an electrical device) includes: a case 12 that can attach and detach the battery pack 2 to and from the case 12 by sliding the battery pack 2 in a sliding direction; a battery connection terminal 32 electrically connected to the battery pack 2 attached to the case 12; and a terminal cover 34 movable between a protection position for protecting the battery connection terminal 32 and an exposure position for exposing the battery connection terminal 32. The housing 12 has cover rails 36, 37 extending in the sliding direction. The terminal cover 34 has: a cover main body 42 having a shape at least partially covering the battery connection terminal 32, and hooks 44, 45 formed integrally with the cover main body 42. The hooks 44 and 45 are engaged with the cover rails 36 and 37 so as to be slidable in the sliding direction with respect to the cover rails 36 and 37.

According to the above-described charger 10, the terminal cover 34 can be assembled to the case 12 by engaging the hooks 44 and 45 formed integrally with the cover main body 42 with the cover rails 36 and 37. When the terminal cover 34 is assembled to the housing 12, since the screw fixing work is not required, the assembling work and the maintenance work can be easily performed.

In the 1 or more embodiments, the hood rails 36, 37 include the 1 st hood rail 36 and the 2 nd hood rail 37. The hooks 44, 45 have: a 1 st hook 44 that is engaged with the 1 st cover rail 36 so as to be slidable in the sliding direction with respect to the 1 st cover rail 36, and a 2 nd hook 45 that is engaged with the 2 nd cover rail 37 so as to be slidable in the sliding direction with respect to the 2 nd cover rail 37.

According to the above configuration, since the 1 st hook 44 and the 2 nd hook 45 are slidably engaged with the 1 st cover rail 36 and the 2 nd cover rail 37, respectively, the terminal cover 34 can be prevented from rattling when the terminal cover 34 is slid with respect to the housing 12. The terminal cover 34 can be smoothly slid with respect to the housing 12.

In the 1 or more embodiments, the battery connection terminal 32 is disposed between the 1 st cover rail 36 and the 2 nd cover rail 37.

According to the above configuration, in the charger 10, the range occupied by the battery connection terminal 32, the terminal cover 34, and the cover rails 36 and 37 can be further reduced in size in the sliding direction.

In the 1 or more embodiments, the case 12 further includes an outer rib 56 (an example of a cover detachment prevention member), and the outer rib 56 can prevent: the hooks 44 and 45 move or deform, and the engagement between the hooks 44 and 45 and the cover rails 36 and 37 is released.

According to the above structure, the hooks 44, 45 can be prevented from being unintentionally disengaged from the hood rails 36, 37.

In the 1 or more embodiments, the charger 10 further includes: and extension springs 38 and 39 housed inside the case 12. The terminal cover 34 is biased from the exposed position to the protection position by the elastic restoring force of the tension springs 38 and 39.

With the structure in which the terminal cover 34 is biased from the exposed position to the protection position by the elastic restoring force of the compression spring, when the compression spring is subjected to buckling deformation, the compression spring may come into contact with surrounding members, which may cause noise or damage to the compression spring and the surrounding members. According to the above configuration, since the terminal cover 34 is biased from the exposed position to the protection position by the elastic restoring force of the tension springs 38 and 39, it is possible to prevent the generation of noise or the damage of components due to the buckling deformation of the springs.

In the embodiments 1 or more, the leading ends 38a, 39a (examples of one end) of the tension springs 38, 39 are held by the terminal cover 34. Rear ends 38b, 39b (examples of the other ends) of the extension springs 38, 39 are held by the housing 12. The housing 12 further has: spring mounting posts 46, 47 (an example of a columnar member) for holding the rear ends 38b, 39b of the tension springs 38, 39, and stopper ribs 48, 49 and stopper walls 50, 51 (an example of a stopper member) for preventing the rear ends 38b, 39b of the tension springs 38, 39 from moving in the axial direction of the spring mounting posts 46, 47.

With the structure in which the rear ends 38b, 39b of the extension springs 38, 39 are held by the spring mounting posts 46, 47, there is a possibility that the positions at which the spring mounting posts 46, 47 hold the rear ends 38b, 39b of the extension springs 38, 39 are displaced in the axial direction of the spring mounting posts 46, 47 when the extension springs 38, 39 extend and contract. According to the above configuration, it is possible to prevent: the spring mounting posts 46, 47 of the housing 12 hold the positions of the rear ends 38b, 39b of the extension springs 38, 39 misaligned in the axial direction of the spring mounting posts 46, 47.

In the 1 or more embodiments, the housing 12 further includes: bottom plates 52 and 53, inner ribs 54 and 55, and outer ribs 56 and 57 (an example of a tension spring housing member) disposed so as to surround the tension springs 38 and 39 inside the housing 12.

If the front ends 38a, 39a and the rear ends 38b, 39b of the tension springs 38, 39 are detached from the attachment portions, when the tension springs 38, 39 themselves move in the housing 12, there is a possibility that the tension springs 38, 39 may come into contact with other components such as the charging circuit 16 and the blower 18 disposed inside the housing 12, and a problem may occur. According to the above configuration, even when the front ends 38a, 39a and the rear ends 38b, 39b of the tension springs 38, 39 are detached from the mounting portions, the tension springs 38, 39 themselves can be prevented from moving in the housing 12, and the tension springs 38, 39 can be prevented from coming into contact with other members such as the charging circuit 16 and the blower 18.

In more than 1 embodiment, the shroud rails 36, 37 are formed from: the edge portions of the through holes 40 and 41 formed in the housing 12. The hooks 44, 45 have a shape protruding from the cover main body 42 in a direction from the exposed position toward the protection position of the terminal cover 34.

The cover rails 36 and 37 are formed on: in the case of the edge portions of the through holes 40 and 41 formed in the case 12, in a state where the battery pack 2 is not mounted, water or foreign matter may enter from the outside of the case 12 through the through holes 40 and 41 to affect the operation of the tension springs 38 and 39. According to the above configuration, the hooks 44, 45 have a shape protruding from the cover main body 42 in the direction from the exposed position toward the protection position of the terminal cover 34, and therefore, as shown in fig. 4, the hooks 44, 45 can cover the tension springs 38, 39 from the outside of the case 12 in a state where the battery pack 2 is not mounted. In a state where the battery pack 2 is not mounted, water or foreign matter can be prevented from entering from the outside of the case 12 through the through holes 40 and 41 and affecting the operation of the tension springs 38 and 39. In addition, in the case of the structure in which the through holes 40 and 41 are covered with the battery pack 2, even in the state in which the battery pack 2 is mounted, it is possible to suppress the influence of the entry of water or foreign matter from the outside of the case 12 through the through holes 40 and 41 on the operation of the tension springs 38 and 39.

(example 2)

The adapter 102 according to embodiment 2 will be described with reference to fig. 15 to 26. The adapter 102 is: an electric device used for connecting the battery pack 104 and the battery detector 106. The battery pack 104 is used by being attached to, for example, an electric tool such as an electric screwdriver or an electric drill, or an electric working machine such as a mower or a blower. The battery pack 104 has, for example, a lithium ion single battery. The battery detector 106 displays, for example: the remaining amount of the battery pack 104, the accumulated number of charges, and the failure location of the battery pack 104 when it fails. For example, in the case where the old-type battery pack 104 and the old-type battery detector 106 are configured to be connectable to each other and the new-type battery pack 104 and the old-type battery detector 106 are configured not to be connectable to each other, the adapter 102 is prepared corresponding to the new-type battery pack 104 and the old-type battery detector 106 in order to connect the new-type battery pack 104 and the old-type battery detector 106. In addition, when the old-type battery pack 104 and the new-type battery detector 106 are configured not to be connected to each other, the adapter 102 may be prepared corresponding to the old-type battery pack 104 and the new-type battery detector 106 in order to connect the old-type battery pack 104 and the new-type battery detector 106.

As shown in fig. 15, a battery-side mounting portion 104a is provided on the lower surface of the battery pack 104. A detector-side mounting portion 106a is provided on the upper surface of the battery detector 106. The detector-side mounting portion 106a of the battery detector 106 does not correspond to the battery-side mounting portion 104a of the battery pack 104. Therefore, the battery side mounting portion 104a of the battery pack 104 cannot be attached to and detached from the detector side mounting portion 106a of the battery detector 106. On the lower surface of the adapter 102, there are provided: a detector attachment portion 108 (see fig. 22) corresponding to the detector-side attachment portion 106a of the battery detector 106 is provided on the upper surface of the adapter 102 with: the battery side mounting portion 104a of the battery pack 104 corresponds to the battery mounting portion 110 (see fig. 16). The adapter 102 can be attached to and detached from the battery detector 106 by sliding the detector attachment portion 108 of the adapter 102 with respect to the detector-side attachment portion 106a of the battery detector 106. The battery pack 104 can be attached to and detached from the adapter 102 by sliding the battery-side mounting portion 104a of the battery pack 104 with respect to the battery mounting portion 110 of the adapter 102. By attaching the adapter 102 to the battery detector 106 and attaching the battery pack 104 to the adapter 102, the battery pack 104 is connected to the battery detector 106 via the adapter 102. Hereinafter, the direction in which the adapter 102 is slid with respect to the battery detector 106 is referred to as a front-rear direction, the direction orthogonal to the front-rear direction is referred to as a left-right direction, and the directions orthogonal to the front-rear direction and the left-right direction are referred to as up-down directions.

As shown in fig. 16, the adapter 102 has a housing 112 and a terminal cover 114. The housing 112 has an upper housing 128 and a lower housing 130. The upper housing 128 defines the external shape of the upper portion of the adapter 102. The battery mounting portion 110 is provided on an upper surface 128a of the upper case 128. The lower housing 130 defines the outer shape of the lower portion of the adapter 102. As shown in fig. 22, the detector mounting portion 108 is provided on the lower surface 130a of the lower case 130. The upper case 128 and the lower case 130 are fixed to each other by screws 131.

As shown in fig. 16, the upper case 128 has formed thereon: battery rails 134 and 136, through holes 138 and 140 (see fig. 18 to 21 for through hole 140), ribs 139 and 141 (see fig. 20), and a terminal mounting portion 142 (see fig. 18). The longitudinal direction of the battery rails 134 and 136 is the sliding direction in which the battery pack 104 slides with respect to the adapter 102. The battery rail 134 is disposed at the right end of the upper surface 128a of the upper case 128. The battery rail 136 is disposed at the left end portion of the upper surface 128a of the upper case 128. When the battery side mounting portion 104a of the battery pack 104 is mounted to the battery mounting portion 110 of the adapter 102, the battery rails 134, 136 guide the battery side mounting portion 104a in the front-rear direction.

The through hole 138 is disposed close to the battery rail 134. The longitudinal direction of the through hole 138 is along the sliding direction. As shown in fig. 20, the through-hole 140 is disposed close to the battery rail 136. As shown in fig. 18, the longitudinal direction of the through-hole 140 is along the sliding direction. When the battery pack 104 is attached to the adapter 102, the through holes 138 and 140 face the battery pack 104. The terminal mounting portion 142 is disposed between the battery rails 134 and 136. In the present embodiment, edge portions of the through holes 138, 140 form the cover rails 135, 137.

As shown in fig. 16 and 17, the terminal cover 114 is slidably held by cover rails 135, 137 in the sliding direction. The terminal cover 114 is slidable between a protection position (see fig. 16) for covering the battery side terminals 176 described later and an exposure position (see fig. 17) for exposing the battery side terminals 176. The terminal cover 114 is biased from the exposed position toward the protection position by tension springs 126a and 126b (see fig. 21). Therefore, in a state where the battery pack 104 is not attached to the adapter 102, as shown in fig. 16, the terminal cover 114 is held at the protection position by the elastic restoring force of the tension springs 126a and 126 b. When the battery pack 104 is attached to the adapter 102, the terminal cover 114 is pressed by the battery pack 104, and the terminal cover 114 moves from the protection position to the exposure position.

As shown in fig. 24 and 25, the terminal cover 114 has a cover main body 115 and hooks 117 and 119. The cover main body 115 and the hooks 117, 119 are integrally formed. The cover main body 115 has: a front plate 115a covering the front of the battery side terminals 176, an upper plate 115b covering the upper side, a left plate 115c covering the left side, a right plate 115d covering the right side, a separator 115e disposed between adjacent battery side terminals 176, a reinforcing rib 115f disposed between the left plate 115c and the separator 115e, a reinforcing rib 115g disposed between the right plate 115d and the separator 115e, and a reinforcing flange 115h provided at the rear end of the separator 115 e. The left plate 115c, the right plate 115d, and the partition plate 115e of the cover main body 115 are arranged along a plane including the sliding direction and the up-down direction. The reinforcing ribs 115f, 115g and the reinforcing flange 115h are arranged along a plane orthogonal to the sliding direction.

The hook 117 is integrally formed with the right plate 115d of the cover main body 115. The hook 117 has an engaging portion 117a and a spring mounting portion 117 b. The engaging portion 117a includes: an upper plate 117c, a right plate 117d extending downward from the right end of the upper plate 117c, and a lower plate 117e extending leftward from the right plate 117 d. The upper plate 117c, the right plate 117d, and the lower plate 117e extend along the sliding direction. The upper surface of the lower plate 117e has: a convex strip 117f extending along the sliding direction. The spring attachment portion 117b protrudes downward from the lower plate 117e of the engagement portion 117 a. The spring mounting portion 117b is formed with a spring mounting hole 117 g. The hook 119 is formed integrally with the left plate 115c of the cover main body 115. The hook 119 has an engaging portion 119a and a spring mounting portion 119 b. The engaging portion 119a includes: an upper plate 119c, a left plate 119d extending downward from the left end of the upper plate 119c, and a lower plate 119e extending rightward from the left plate 119 d. The upper plate 119c, the left plate 119d, and the lower plate 119e extend along the sliding direction. The lower plate 119e has, on its upper surface: a rib 119f extending along the sliding direction. The spring mounting portion 119b protrudes downward from the lower plate 119e of the engaging portion 119 a. The spring mounting portion 119b is formed with a spring mounting hole 119 g.

As shown in fig. 26, the terminal cover 114 is attached to the upper case 128 by elastically deforming the engagement portions 117a and 119a of the hooks 117 and 119 in a direction to expand outward, and inserting the respective engagement portions 117a and 119a into the through holes 138 and 140, respectively. In a state where the terminal cover 114 is attached to the upper case 128, the engagement portions 117a and 119a of the hooks 117 and 119 are slidably engaged with the cover rails 135 and 137 in the sliding direction. Thus, the terminal cover 114 is slidably held in the upper case 128 in the sliding direction with respect to the upper case 128.

In a state where the terminal cover 114 is attached to the upper case 128, the terminal cover 114 is movable downward with respect to the upper case 128 until the projections 139 and 141 of the upper case 128 come into contact with the lower surfaces of the upper plates 117c and 119c of the hooks 117 and 119, and the projections 117f and 119f of the hooks 117 and 119 move upward until they come into contact with the cover rails 135 and 137. Therefore, when the terminal cover 114 is slid in the sliding direction with respect to the upper case 128, although scratches are generated on the lower surfaces of the upper plates 117c, 119c of the hooks 117, 119 and the lower surfaces of the cover rails 135, 137 along with the sliding of the convex strips 139, 141, 117f, 119f, the outer surface of the upper case 128 and the outer surface of the terminal cover 114 are not scratched. Therefore, even when the terminal cover 114 is repeatedly slid with respect to the upper case 128, the appearance of the adapter 102 can be kept good.

As shown in fig. 20, the adapter 102 further has a control substrate 116 and waterproof walls 118 and 120. The control board 116 and the waterproof walls 118 and 120 are housed inside the upper case 128 and the lower case 130. As shown in fig. 19, the control substrate 116 is positioned with respect to the upper housing 128 by positioning pins 144 of the upper housing 128 at 2 corners in a diagonal relationship among 4 corners. In addition, the control substrate 116 is fixed to the upper case 128 by screws 146 at the other 2 corners in a diagonal relationship among the 4 corners.

The waterproof walls 118 and 120 extend from the upper inner surface of the upper case 128 toward the lower side (see fig. 18). As shown in fig. 20, the waterproof wall 118 extends in the sliding direction at a position on the left side of the cover rail 135 in the through hole 138. Bulkhead 118 is configured to: the through hole 138 is blocked from the control board 116. The lower end of the waterproof wall 118 is disposed below the control board 116. The waterproof wall 120 extends in the sliding direction at a position on the right side of the cover rail 137 in the through hole 140. Bulkhead 120 is configured to: the through hole 140 is shielded from the control board 116. The lower end of the waterproof wall 120 is disposed below the control board 116. The control board 116 is disposed between the waterproof walls 118 and 120 in the left-right direction. When water enters the housing 112 through the through holes 138 and 140, the waterproof walls 118 and 120 guide the entered water downward.

As shown in fig. 21, pins 132a and 132b extend downward on the upper inner surface of the upper casing 128. The pin 132a is disposed between the bulkhead 118 and the right edge of the through hole 138 in the left-right direction. In the left-right direction, a width W1 between the pin 132a and the bulkhead 118 is substantially the same as a width W2 between the pin 132a and the right edge of the through hole 138. In the left-right direction, the pin 132b is disposed between the bulkhead 120 and the left edge of the through hole 140. In the left-right direction, a width W1 between the pin 132b and the bulkhead 120 is substantially the same as a width W2 between the pin 132b and the left edge of the through-hole 140.

One end of the tension spring 126a is attached to the pin 132 a. The other end of the tension spring 126a is attached to the spring attachment portion 117b of the terminal cover 114. The extension spring 126a is inclined so as to be away from the bulkhead 118 as it approaches from the front side to the rear side. If the pin 132a is positioned closer to the bulkhead 118 than the pin 132a of the present embodiment and the extension spring 126a is arranged parallel to the front-rear direction, the extension spring 126a interferes with the bulkhead 118, and therefore, the attachment of the extension spring 126a is deteriorated. In the present embodiment, since the extension spring 126a is inclined so as to be apart from the waterproof wall 118 as it approaches from the front side to the rear side, it is possible to suppress: the tension spring 126a interferes with the bulkhead 118 to deteriorate the mountability of the tension spring 126 a. Further, one end of the tension spring 126b is attached to the pin 132 b. The other end of the tension spring 126b is attached to the spring attachment portion 119b of the terminal cover 114. The extension spring 126b is inclined so as to be away from the bulkhead 120 as it approaches from the front side to the rear side. Therefore, it is possible to suppress: the extension spring 126b interferes with the bulkhead 120 to deteriorate the mountability of the extension spring 126 b.

As shown in fig. 22, the lower case 130 is provided with detector rails 150 and 152 and a terminal mounting portion 154. The length direction of the detector rails 150, 152 is along the front-to-back direction. The detector rail 150 is disposed at a right end portion of the lower surface 130a of the lower case 130. The detector rail 152 is disposed at a left end portion of the lower surface 130a of the lower case 130. The detector rails 150 and 152 are longer than the rails (not shown) of the battery-side mounting portion 104a of the battery pack 104. Thus, the adapter 102 is not erroneously attached to an electric device other than the battery detector 106, for example, an electric power tool or an electric working machine. The detector rail 152 extends long to a position forward of the front end of the detector rail 150. In this way, the adapter 102 can be attached to and detached from the old-type battery detector 106, but cannot be attached to and detached from the new-type battery detector 106. When the detector-side mounting portion 106a of the battery detector 106 is mounted to the detector mounting portion 108 of the adapter 102, the detector rails 150, 152 guide the detector-side mounting portion 106a in the sliding direction. The terminal mounting portion 154 is disposed between the detector rails 150, 152.

In addition, the adapter 102 also has a hook 180. The hook 180 is disposed at the rear end of the adapter 102. The hook 180 is urged by a compression spring 182 (see fig. 23), and normally protrudes below the lower surface 130a of the lower case 130. The length direction of the hook 180 is along the up-down direction. The adapter 102 is held by the battery detector 106 by the hook 180 engaging with an engaging groove (not shown) formed on the upper surface of the battery detector 106.

As shown in fig. 20, the adapter 102 also has interior walls 122, 124. The inner walls 122, 124 are housed inside an upper case 128 and a lower case 130. The inner walls 122, 124 extend from the lower inner surface of the lower housing 130 to the upper side. The length direction of the inner walls 122, 124 is along the front-to-rear direction. The inner wall 122 is configured with: the waterproof wall 118 is disposed on the left side and the control board 116 is disposed on the right side. Further, the upper end portion of the inner wall 122 is disposed: the lower end of the waterproof wall 118 is positioned above the control board 116. The inner wall 124 is configured with: the waterproof wall 120 is located on the right side and the control board 116 is located on the left side. Further, the upper end portion of the inner wall 124 is disposed: the lower end of the waterproof wall 120 and the control board 116 are located above each other. The control board 116 is disposed between the inner walls 122 and 124 in the left-right direction. Further, the inner walls 122, 124 are disposed between the waterproof walls 118, 120 in the left-right direction. In the left-right direction, the inner wall 122 overlaps the bulkhead 118, and the inner wall 124 overlaps the bulkhead 120, whereby the inner walls 122, 124 and the bulkheads 118, 120 form a labyrinth structure. Thereby, as compared with the case where the adapter 102 has only one of the waterproof walls 118, 120 and the inner walls 122, 124, it is possible to further suppress: the water entering the housing 112 through the through holes 138 and 140 reaches the control board 116.

Stepped portions 158 and 160 are formed on the inner surface of the lower case 130. The step portion 158 is disposed: to the right of inner wall 122 and bulkhead 118. The lower inner surface of the lower case 130 on the right side of the step portion 158 is located: and is located above the lower inner surface between the step 158 and the inner wall 122. A waterproof groove 164 is formed between the step portion 158 and the inner wall 122. The step portion 160 is disposed: to the left of inner wall 124 and bulkhead 120. The lower inner surface of the lower case 130 on the left side of the step 160 is located at: and is located above the lower inner surface between the step 160 and the inner wall 124. A waterproof groove 166 is formed between the step portion 160 and the inner wall 124. A waterproof groove 166 is formed. The longitudinal direction of the waterproof grooves 164, 166 is along the front-rear direction. The lower end portion of the waterproof wall 118 is disposed in the waterproof groove 164. Further, the lower end portion of the waterproof wall 120 is disposed in the waterproof groove 166. The water-proof grooves 164, 166 receive: water directed by the bulkheads 118, 120, respectively.

The lower case 130 is formed with discharge ports 168 and 170. The discharge port 168 is disposed at the front end of the waterproof groove 164. The outlet 170 is disposed at the front end of the waterproof groove 166.

When the adapter 102 is attached to the battery detector 106 placed on a horizontal surface, the lower surface 130a of the lower case 130 is inclined with respect to the horizontal surface: the upper side faces the lower side as the rear side approaches the front side. Thus, the flashing grooves 164, 166 are inclined with respect to the horizontal plane: the upper side faces the lower side as the rear side approaches the front side. Thereby, the water dropped from the waterproof walls 118, 120 to the waterproof grooves 164, 166 flows to the front side and is discharged from the discharge ports 168, 170 to the outside of the housing 112. The water discharged from the discharge ports 168 and 170 flows on the outer surface of the battery detector 106 and drops to the lower side of the battery detector 106.

Even when the adapter 102 is placed on a horizontal surface, the lower surface 130a of the lower case 130 is inclined with respect to the horizontal surface: the upper side faces the lower side as the rear side approaches the front side. Therefore, the waterproof grooves 164 and 166 are inclined from the upper side to the lower side with respect to the horizontal plane as the rear side approaches the front side. Thereby, the water moved from the waterproof walls 118, 120 to the waterproof grooves 164, 166 flows to the front side and is discharged from the discharge ports 168, 170 to the outside of the housing 112.

As shown in fig. 23, the control substrate 116 is configured to: parallel to the lower surface 130a of the lower housing 130. The control board 116 is inclined with respect to the upper surface 128a of the upper case 128. In the present embodiment, the upper surface 128a of the upper housing 128 is inclined at an angle of 5 ° with respect to the lower surface 130a of the lower housing 130. The upper surface 128a of the upper case 128 may be inclined at an angle greater than 0 ° and 10 ° or less, or may be inclined at an angle greater than 0 ° and 15 ° or less, with respect to the lower surface 130a of the lower case 130.

The device-side terminal 174 is mounted on the lower surface 116a of the control board 116. The device-side terminals 174 extend from the lower surface 116a of the control substrate 116 to the lower side, and then are bent and extend to the front side. The apparatus-side terminals 174 protrude to the outside of the lower case 130 via the terminal mounting parts 154 of the lower case 130. When the adapter 102 is attached to the battery detector 106, the device-side terminal 174 is electrically connected to a terminal (not shown) of the battery detector 106.

A battery side terminal 176 is mounted on the upper surface 116b of the control board 116. The battery side terminals 176 protrude to the outside of the upper case 128 via the terminal mounting parts 142 of the upper case 128. When the adapter 102 is attached to the battery pack 104, the battery side terminals 176 are electrically connected to terminals (not shown) of the battery pack 104.

(example 3)

The adapter 202 according to embodiment 3 will be described with reference to fig. 27 and 28. As shown in fig. 27, the adapter 202 of the present embodiment has substantially the same structure as the adapter 102 of embodiment 2. The adapter 202 of the present embodiment has a terminal cover 204 instead of the terminal cover 114.

As shown in fig. 28, the terminal cover 204 of the present embodiment has substantially the same structure as the terminal cover 114 of embodiment 2. The terminal cover 204 of the present embodiment has: a mask body 115, hooks 117, 119, and mask plates 206, 208.

The cover plate 206 is arranged along the same plane as the upper plate 117c of the hook 117. The hood plate 206 extends from the front plate 115a of the hood main body 115 to the upper plate 117c of the hook 117. The cover plate 208 is disposed along the same plane as the upper plate 119c of the hook 119. The cover plate 208 extends from the front plate 115a of the cover main body 115 to the upper plate 119c of the hook 119.

As shown in fig. 27, in a state where the terminal cover 204 is attached to the upper case 128, the cover plate 206 and the upper plate 117c of the hook 117 are disposed so as to face the projection 139 of the upper case 128, and the cover plate 208 and the upper plate 119c of the hook 119 are disposed so as to face the projection 141 of the upper case 128. Therefore, when a force for rotating the terminal cover 204 with respect to the upper case 128 about the horizontal direction as a rotation axis acts, the rattling of the terminal cover 204 is reduced as compared with the adapter 102 of embodiment 2. Thus, even when a force for rotating the terminal cover 204 with respect to the upper case 128 about the left-right direction as a rotation axis acts, it is possible to suppress: the battery-side terminals 176 are in contact with the front plate 115a or the upper plate 115b of the cover main body 115.

As described above, in the 1 or more embodiments, the adapters 102 and 202 (examples of the electrical device) include: a case 112 to which the battery pack 104 can be attached to and detached from the case 112 by sliding the battery pack 104 in a sliding direction; a battery side terminal 176 (an example of a battery connection terminal) electrically connected to the battery pack 104 attached to the case 112; and terminal covers 114 and 204 that are movable between a protection position for protecting the battery side terminals 176 and an exposure position for exposing the battery side terminals 176. The housing 112 has: cover rails 135, 137 extending along the sliding direction. The terminal covers 114 and 204 have: a cover main body 115 having a shape that at least partially covers the battery side terminals 176, and hooks 117, 119 formed integrally with the cover main body 115. The hooks 117, 119 are engaged with the cover rails 135, 137 so as to be slidable in the sliding direction with respect to the cover rails 135, 137.

According to the adapters 102 and 202, the terminal covers 114 and 204 can be assembled to the housing 112 by engaging the hooks 117 and 119 formed integrally with the cover main body 115 with the cover rails 135 and 137. When the terminal covers 114 and 204 are assembled to the housing 112, the screw fixing work is not required, and therefore, the assembling work and the maintenance work can be easily performed.

In the 1 st or more embodiments, the shroud rails 135, 137 have the 1 st shroud rail 135 and the 2 nd shroud rail 137. The hooks 117, 119 have: the 1 st hook 117 engaged with the 1 st cover rail 135 so as to be slidable in the sliding direction with respect to the 1 st cover rail 135, and the 2 nd hook 119 engaged with the 2 nd cover rail 137 so as to be slidable in the sliding direction with respect to the 2 nd cover rail 137.

According to the above configuration, since the 1 st hook 117 and the 2 nd hook 119 are slidably engaged with the 1 st cover rail 135 and the 2 nd cover rail 137, respectively, when the terminal covers 114 and 204 are slid with respect to the housing 112, the terminal covers 114 and 204 can be prevented from rattling. The terminal covers 114 and 204 can be smoothly slid with respect to the housing 112.

In the 1 or more embodiments, the battery-side terminal 176 is disposed between the 1 st cover rail 135 and the 2 nd cover rail 137.

According to the above configuration, the range of the battery-side terminals 176, the terminal covers 114 and 204, and the cover rails 135 and 137 in the adapters 102 and 202 can be further reduced in size in the sliding direction.

In the 1 or more embodiments, the adapters 102 and 202 further include: and extension springs 126a and 126b housed inside the housing 112. The terminal covers 114 and 204 are biased from the exposed position to the protected position by the elastic restoring force of the tension springs 126a and 126 b.

In the 1 or more embodiments, the adapters 102 and 202 (examples of the electric devices) include: a case 112 to which the battery pack 104 can be attached to and detached from the case 112 by sliding the battery pack 104 in a sliding direction; a battery side terminal 176 (an example of a battery connection terminal) electrically connected to the battery pack 104 attached to the case 112; terminal covers 114 and 204 movable between a protection position for protecting the battery side terminals 176 and an exposure position for exposing the battery side terminals 176; and extension springs 126a and 126b housed inside the case 112. The terminal covers 114 and 204 are biased from the exposed position to the protected position by the elastic restoring force of the tension springs 126a and 126 b.

With the structure in which the terminal covers 114 and 204 are biased from the exposed position to the protection position by the elastic restoring force of the compression spring, when the compression spring is deformed by buckling, the compression spring may contact with surrounding members, which may cause noise or damage to the compression spring and the surrounding members. According to the above configuration, since the terminal covers 114 and 204 are biased from the exposed position to the protection position by the elastic restoring force of the tension springs 126a and 126b, it is possible to prevent the generation of noise or the damage of components due to the buckling deformation of the springs.

In the 1 or more embodiments, the cover rails 135, 137 are formed at edge portions of the through holes 138, 140 formed in the housing 112. The hooks 117, 119 have a shape protruding from the cover main body 115 in a direction from the exposed position toward the protected position of the terminal covers 114, 204.

When the cover rails 135 and 137 are formed at the edge portions of the through holes 138 and 140 formed in the case 112, in a state where the battery pack 104 is not mounted, water or foreign matter may enter from the outside of the case 112 through the through holes 138 and 140 to affect the operation of the tension springs 126a and 126 b. According to the above configuration, the hooks 117, 119 have a shape protruding from the cover main body 115 in the direction from the exposed position toward the protection position of the terminal covers 114, 204, and therefore, even in a state where the battery pack 104 is not mounted, the tension springs 126a, 126b can be covered by the hooks 117, 119 from the outside of the case 112. In a state where the battery pack 104 is not mounted, it is possible to suppress: water or foreign matter enters from the outside of the housing 112 through the through holes 138 and 140 and affects the operation of the tension springs 126a and 126 b.

In the 1 or more embodiments, the outer surfaces of the cover rails 135 and 137 are formed with: and ribs 139 and 141 extending in the sliding direction.

When the convex strips 139 and 141 are not formed on the outer surfaces of the cover rails 135 and 137 as described above, and when the hooks 117 and 119 repeatedly slide on the cover rails 135 and 137, the outer surfaces of the cover rails 135 and 137 may be scratched, which may impair the appearance of the adapters 102 and 202. According to the above configuration, even when the hooks 117 and 119 slide repeatedly with respect to the cover rails 135 and 137, the formation of scratches on the outer surfaces of the cover rails 135 and 137 can be suppressed, and the beauty of the adapters 102 and 202 can be maintained.

In the 1 or more embodiments, the terminal cover 204 further has cover plates 206, 208, the cover plates 206, 208 are formed integrally with the hooks 117, 119, extend along the outer surfaces of the cover rails 135, 137, and the lengthwise direction of the cover plates 206, 208 is along the sliding direction.

According to the above configuration, even when a force in the rotational direction that moves the end portion of the terminal cover 204 in the sliding direction up and down acts on the terminal cover 204, the terminal cover 204 can be prevented from rattling with respect to the housing 112, and the terminal cover 204 can be prevented from coming into contact with the battery side terminals 176.

In the 1 or more embodiments, the cover main body 115 includes: reinforcing ribs 115f and 115g and a reinforcing flange 115h (an example of a reinforcing member) along a surface orthogonal to the sliding direction.

According to the above configuration, the rigidity of the cover main body 115 in the direction orthogonal to the sliding direction can be improved. Thus, even when an impact is applied to the cover main body 115, the cover main body 115 is prevented from being deformed, and the cover main body 115 is prevented from coming into contact with the battery side terminals 176.