阅读说明：本技术 电气装置 (Electrical device ) 是由 田头毅 加藤智纪 于 2018-06-06 设计创作，主要内容包括：本发明涉及电气装置。电气装置(10)具备收容电气部件的主体、覆盖上述主体的开敞部的盖、设置在上述主体的第1密封部(71)、以及设置在上述盖的第2密封部(61),从上述开敞部凹陷且供上述电气部件的线缆(38)嵌合的第1槽(72)形成于上述第1密封部(71),与上述第1槽(72)对置且供上述线缆(38)嵌合的第2槽(62)形成于上述第2密封部(61),在由上述主体以及上述盖形成的壳体设置有插入部,该插入部供从上述壳体中向外延伸的上述电气部件的上述线缆通过、且与上述第1槽以及上述第2槽对应。(The present invention relates to an electrical device. An electric device (10) is provided with a main body for accommodating electric components, a cover for covering an opening part of the main body, a 1 st sealing part (71) arranged on the main body, and a 2 nd sealing part (61) arranged on the cover, wherein a 1 st groove (72) which is recessed from the opening part and is used for a cable (38) of the electric components to be embedded is formed on the 1 st sealing part (71), a 2 nd groove (62) which is opposite to the 1 st groove (72) and is used for the cable (38) to be embedded is formed on the 2 nd sealing part (61), and a housing formed by the main body and the cover is provided with an insertion part which is used for the cable of the electric components extending outwards from the housing to pass through and corresponds to the 1 st groove and the 2 nd groove.)

An electrical device of kinds, comprising:

a main body for accommodating electrical components;

a cover covering the opening portion of the main body;

a 1 st seal portion provided in the main body, an

A 2 nd sealing part provided at the cap,

a 1 st groove is formed in the 1 st sealing portion, the 1 st groove being recessed from the opening portion and into which a cable of the electric component is fitted,

a 2 nd groove is formed in the 2 nd sealing portion, the 2 nd groove facing the 1 st groove and into which the cable is fitted,

an insertion portion is provided in a housing formed by the main body and the cover, the insertion portion being configured to pass the cable of the electrical component extending outward from the housing and corresponding to the 1 st groove and the 2 nd groove.

2. The electrical device of claim 1,

the insertion portion is formed by the main body and the cover covering the opening portion.

3. The electrical device of claim 1 or 2,

the 1 st groove is formed in an arc shape having a central angle larger than 180 degrees and a radius smaller than that of the cable.

4. The electrical device of any of claims 1-3,

the 1 st sealing portion and the 2 nd sealing portion are formed of an elastic member and are compressed at when the opening portion is covered with the cover.

5. The electrical device of claim 4,

the 1 st groove and the 2 nd groove are formed in a circular shape by mutually compressing the 1 st seal part and the 2 nd seal part from .

6. The electrical device of any of claims 1-5,

the electric device further includes:

a 1 st outer support portion forming a 1 st outer groove surrounding the 1 st groove, the 1 st outer support portion being laminated on an outer side of the 1 st seal portion and being harder than the 1 st seal portion; and

and a 2 nd outer support portion forming a 2 nd outer groove surrounding the 2 nd groove, the 2 nd outer support portion being laminated on an outer side of the 2 nd seal portion and being harder than the 2 nd seal portion.

7. The electrical device of claim 6,

the electric device further includes:

a 1 st inner support portion that forms a 1 st inner groove surrounding the 1 st groove, the 1 st inner support portion being stacked inside the 1 st seal portion and being harder than the 1 st seal portion;

and a 2 nd inner support portion forming a 2 nd inner groove surrounding the 2 nd groove, the 2 nd inner support portion being stacked on the inner side of the 2 nd seal portion and being harder than the 2 nd seal portion.

8. The electrical device of any of claims 1-7,

the opening portion is opened in a direction in which the 1 st groove extends and in a direction in which the 1 st groove opens opposite to a direction in which the 1 st groove is recessed.

9. The electrical device of any of claims 1-8,

the plurality of the 1 st grooves are formed in an array of of the 1 st sealing portions along a boundary between the body and the lid, and the plurality of the 2 nd grooves are formed in an array of the 2 nd sealing portions so as to face the 1 st grooves.

Technical Field

The present invention relates to an electrical device, and for example, to an electrical device including a case that houses an electrical component to which a cable is connected.

Background

As a member for securing sealing performance in an electrical device including a case for housing electrical components to which cables are connected, for example, an electronic equipment housing rack shown in patent document 1 is known. In the electronic equipment storage rack, a plate-shaped cover made of an elastic material is provided with a slit for drawing out a cable from the inside of the rack main body.

Patent document 1, Japanese patent laid-open No. 2008-153591

For example, in the case of connecting a cable to an electronic device mounted in advance in a rack or the like, a cable is used in which a connector for connecting to the electronic device is provided at an end and a connector for connecting to an external power supply is provided at the other end .

Disclosure of Invention

The present invention has been made to solve the above problems, and an object thereof is to provide an electric device capable of easily ensuring sealing performance.

An electrical device according to an aspect of the present invention includes: a main body for accommodating electrical components; a cover covering the opening portion of the main body; and a 1 st sealing portion provided in the body and a 2 nd sealing portion provided in the cover, wherein a 1 st groove recessed from the opening portion and into which a cable of the electric component is fitted is formed in the 1 st sealing portion, a 2 nd groove opposed to the 1 st groove and into which the cable is fitted is formed in the 2 nd sealing portion, and an insertion portion through which the cable of the electric component extending outward from the housing passes and which corresponds to the 1 st groove and the 2 nd groove is provided in a housing formed by the body and the cover.

In the electric device, the insertion portion may be formed by the main body and the cover covering the opening portion.

In the electric device, the 1 st groove may be formed in an arc shape having a central angle larger than 180 degrees and a radius smaller than a radius of the cable.

In the electric device, the 1 st sealing portion and the 2 nd sealing portion may be formed of an elastic member, and may be compressed at when the opening portion is covered with the cover.

In the electric device, the 1 st groove and the 2 nd groove may be formed in a circular shape by the 1 st sealing portion and the 2 nd sealing portion compressed from to each other.

In the electric device, the electric device may further include: a 1 st outer support portion forming a 1 st outer groove surrounding the 1 st groove, the 1 st outer support portion being laminated on an outer side of the 1 st seal portion and being harder than the 1 st seal portion; and a 2 nd outer support portion forming a 2 nd outer groove surrounding the 2 nd groove, the 2 nd outer support portion being laminated on an outer side of the 2 nd seal portion and being harder than the 2 nd seal portion.

In the electric device, the electric device may further include: a 1 st inner support portion that forms a 1 st inner groove surrounding the 1 st groove, the 1 st inner support portion being stacked inside the 1 st seal portion and being harder than the 1 st seal portion; and a 2 nd inner support portion forming a 2 nd inner groove surrounding the 2 nd groove, the 2 nd inner support portion being stacked on the inner side of the 2 nd seal portion and being harder than the 2 nd seal portion.

In the electric device, the opening portion may be opened in a direction in which the 1 st groove extends and a direction in which the 1 st groove opens opposite to a direction in which the 1 st groove is recessed.

In the electric device, a plurality of the 1 st grooves may be formed in an array of the 1 st sealing portions along a boundary between the main body and the cover, and a plurality of the 2 nd grooves may be formed in an array of the 2 nd sealing portions so as to face the 1 st grooves.

The present invention has the above-described configuration, and has the effect of providing an electric device in which the sealing property can be easily ensured.

The above and other objects, features and advantages of the present invention will become apparent from the following detailed description of preferred embodiments with reference to the accompanying drawings.

Drawings

Fig. 1 is a perspective view showing an electric device according to an embodiment of the present invention.

Fig. 2 is a cross-sectional view of the electrical device of fig. 1.

Fig. 3 is a cross-sectional view of an electric device in which the 1 st cover, the 2 nd cover, and the 3 rd cover are attached to the main body of fig. 1.

Fig. 4 is a cross-sectional view of the electrical device with the 3 rd cover portion of fig. 3 removed.

Fig. 5 is a view seen from the rear side.

Fig. 6 is a rear view of the electric device of fig. 3.

Detailed Description

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. In all the drawings, the same or corresponding elements are denoted by the same reference numerals, and redundant description thereof is omitted. In the drawings, the directions of up, down, left, right, front, and rear are defined, but the direction of the electric device is not limited to this.

The structure of the electric device 10 according to the embodiment will be described with reference to fig. 1 to 2. The electric device 10 includes a housing 20 that houses electric components. The case 20 is made of a material having a higher thermal conductivity than iron, and examples of the material include metals such as aluminum. The housing 20 is a housing 20 having an internal space, for example, a rectangular parallelepiped shape. The housing 20 has a front wall 21, a lower wall 22, a rear wall 23, an upper wall 24, a left wall 25, and a right wall 26.

The housing 20 is provided with a plurality of 1 st ventilation holes 32. Further, a plurality of 1 st fans 33 are provided in the casing 20, and the plurality of 1 st fans 33 are arranged at intervals in the left-right direction. The 1 st fan 33 is provided to face the vicinity of the 1 st ventilation hole 32 of the front wall 21, and is disposed at a position overlapping the 1 st ventilation hole 32 when viewed from the front to rear in plan view. Thereby, the 1 st fan 33 introduces air from the 1 st ventilation hole 32 in front and blows the air rearward.

A plurality of 3 rd ventilation holes 34 are formed in the rear wall 23. The 3 rd ventilation hole 34 is disposed at a position overlapping the 1 st ventilation hole 32 of the front wall 21 when viewed from the front to rear. A 1 st fan 33 is disposed between the 3 rd ventilation hole 34 and the 1 st ventilation hole 32. Thus, the following first flow path is provided in the casing 20: the air introduced from the 1 st ventilation hole 32 by the 1 st fan 33 flows backward and is discharged from the 3 rd ventilation hole 34.

A plurality of electrical components are housed in the case 20. Examples of the electrical components include a power semiconductor element 37, a power circuit board 35 on which the power semiconductor element 37 is mounted, a control circuit board 36, and a regenerative resistor. Among them, power semiconductor element 37 and components such as regenerative resistor, which generate more heat than other electrical components such as control circuit board 36, are disposed in contact with the inner surface of lower wall 22. Thus, heat generated from the heat transfer tubes is transferred to the case 20 having a high thermal conductivity, thereby performing heat dissipation and cooling.

Further, the power semiconductor element 37 and the members having a large heat generation amount such as the regenerative resistor are disposed in the 1 st flow path by the 1 st fan 33 between the 1 st vent hole 32 and the 3 rd vent hole 34. Thereby, they are cooled by the air blown by the 1 st fan 33.

The rear wall 23 is provided with a plurality of through holes 27, and the internal space of the case 20 communicates with the outside through the through holes 27, the connector 35a of the power circuit board 35 and the connector 36a of the control circuit board 36 communicate with the through holes 27, the connector 38a provided at the end of the cable 38 is connected to the connectors 35a and 36a, and a connector (not shown) for connecting to an external power supply is provided at the other end of the cable 38.

Next, the electric device 10 in the case of sealing the housing 20 will be described with reference to fig. 3. A1 st cover 39 is attached to the outer surface of the front wall 21 of the housing 20, a 2 nd cover 40 is attached to the outer surface of the lower wall 22, and a 3 rd cover 41 is attached to the outer surface of the rear wall 23. The 1 st cover 39, the 2 nd cover 40, and the 3 rd cover 41 are formed of a material having a higher thermal conductivity than iron, for example, and aluminum is used as the material.

The 1 st cover 39 is shaped to open rearward and covers the 1 st ventilation hole 32 of the front wall 21. The 1 st cover 39 is provided with a plurality of 2 nd vent holes 45. A 2 nd fan 46 is provided in the 1 st cover 39 so as to face the 2 nd ventilation hole 45.

The 2 nd fan 46 is covered with the 1 st cover 39 and is disposed at a position overlapping the 2 nd ventilation hole 45 of the 1 st cover 39 when viewed from the front to the rear in plan view. Thus, the 2 nd fan 46 introduces the outside air from the 2 nd vent hole 45 in front and blows the air rearward.

In addition, in the 1 st cover 39, a covering member 56 is attached to the outer surface of the front wall 21 so as to cover the 1 st ventilation hole 32 of the front wall 21. The covering member 56 is, for example, in a flat plate shape, and seals the housing 20 in the front wall 21 by covering the 1 st ventilation hole 32.

The cover member 56 is disposed to face the 2 nd fan 46, and air introduced by the 2 nd fan 46 through the 2 nd air vent 45 is sent to the cover member 56. The covering member 56 is formed of a material having a higher thermal conductivity than iron, and examples of the material include aluminum. Therefore, the air sent from the 2 nd fan 46 cools the cover member 56 and the air in the vicinity thereof. Since the cover member 56 is located on the upstream side of the 1 st fan 33, the 1 st fan 33 can efficiently cool the heat generating components by sending the air cooled by the cover member 56 to the heat generating components.

The 2 nd cover 40 is a rectangular parallelepiped shape having an open upper side, is provided below the housing 20 and the 3 rd cover 41, covers the lower wall 22 of the housing 20 and the lower surface of the 3 rd cover 41, and forms a closed space therebetween. The 2 nd cover 40 has a length equal to the sum of the length of the housing 20 and the length of the 3 rd cover 41 in the front-rear direction, and spans the entire lower wall 22 and the 3 rd cover 41 in the front-rear direction.

The 2 nd cover 40 also has an opening 47 formed at the front. The 2 nd fan 46 is disposed in front of the opening 47, and the opening 47 is covered with the 1 st cover 39. The internal space of the 1 st cover 39 and the internal space of the 2 nd cover 40 communicate with each other through the opening 47. Therefore, the air introduced from the 2 nd vent hole 45 by the 2 nd fan 46 is blown into the 2 nd cover 40 through the opening 47.

And, a plurality of 4 th ventilation holes 50 are opened at the rear of the 2 nd cover 40. The 4 th ventilation hole 50 is disposed at a position overlapping the opening 47 and the 2 nd ventilation hole 45 of the 1 st cover 39 when viewed from the front-to-rear direction, and the 2 nd fan 46 is disposed between the 4 th ventilation hole 50 and the 2 nd ventilation hole 45. Thus, the following flow path 2 is provided in the 2 nd cover 40: the air introduced from the 2 nd ventilation hole 45 by the 2 nd fan 46 flows backward, and is discharged from the 4 th ventilation hole 50 through the opening 47.

A heat sink 51 is attached to the outer surface of the lower wall 22 of the housing 20 (the lower surface of the housing 20) inside the 2 nd cover 40. The heat sink 51 is detachably attached to the casing 20 by screws or the like, covered with the 2 nd cover 40, and disposed in the 2 nd flow path by the 2 nd fan 46. The heat sink 51 cools the heat generating components (power semiconductor element 37, regenerative resistor) through the lower wall 22.

The 3 rd cover 41 is in the shape of a rectangular parallelepiped with an open front, covers the rear face of the rear wall 23 of the housing 20, and forms a closed space with them. The 3 rd cover 41 has a height in the vertical direction equal to the height in the vertical direction of the housing 20, and extends over the entire outer surface of the rear wall 23 of the housing 20 in the vertical direction. The shape of the housing 20 covered by the 2 nd cover 40 and the 3 rd cover 41 is a rectangular parallelepiped shape.

An insertion portion 48 is provided in the 3 rd cover 41. The cable 38 and the like are inserted into the insertion portion 48. The cable 38 is, for example, a cable for supplying power connected to an external power supply such as a commercial power supply, a cable for connecting electrical components such as the respective boards to an external device, or the like.

Next, the details of the 3 rd cover 41 will be described with reference to fig. 3 to 5. The 3 rd cover 41 includes a 3 a-th cover portion 60 and a 3 b-th cover portion 70. The 3 a-th cover part 60 has an upper surface part 60a of the 3 rd cover 41 and an upper part of the rear surface part (the 3 rd rear surface part 60b), and the 3 b-th cover part 70 has a right surface part, a left surface part, a lower surface part 70a of the 3 rd cover 41 and a lower part of the rear surface part (the 3 rd rear surface part 70 b). In addition, the 3 a-th cover part 60 may have a right face and/or a left face of the 3 rd cover 41 instead of the 3 b-th cover part 70.

As shown in fig. 3 and 4, the 3 a-th cover portion 60 is detachable from the 3 b-th cover portion 70, and when the 3 b-th cover portion 70 is attached to the housing 20, as shown in fig. 3, the internal space of the housing 20 in which the electric component is housed communicates with the internal space of the 3 b-th cover portion 70 through the through hole 27 of the rear wall 23 of the housing 20, and the housing 20 and the 3 b-th cover portion 70 which are attached in this way to form an body function as a main body in which the electric component is housed.

In addition, , when the 3-a cover part 60 is removed from the 3-b cover part 70 as shown in fig. 4, the 3-b cover part 70 has an open part 60c whose upper side is open upward and rearward, and when the 3-a cover part 60 is attached to the 3-b cover part 70 as shown in fig. 3, the 3-a cover part 60 covers the open part 60c of the 3-b cover part 70, and thus the 3-a cover part 60 functions as a cover for covering the open part 60c of the main body.

The case is formed by such a main body (the housing 20 and the 3b hood portion 70) and a cover (the 3 rd hood portion 60), an insertion portion 48 through which the cable 38 of the electric component extending outward from the case passes is provided, the insertion portion 48 is formed by the 3 rd hood portion 70 and the 3 rd hood portion 60 covering the open portion 60c of the 3b hood portion 70, and therefore, the insertion portion 48 is provided between the 3b hood portion 70 and the 3a hood portion 60 by covering the open portion 60c of the 3b hood portion 70 with the 3 rd hood portion 60, and the 3b hood portion 70 is opened by removing the 3 rd hood portion 60 from the 3b hood portion 70 on the other hand, .

In addition, a recess (3 b-th recess 70c) is provided in the 3 b-th rear surface portion 70b of the 3 b-th cover portion 70. The 3 b-th recessed portion 70c is rectangular, for example, and is recessed downward from the 3 b-th rear surface portion 70b of the 3 b-th cover portion 70, the upper ends of the right and left surface portions, and a portion where the 3 b-th cover portion 70 and the 3 a-th cover portion 60 meet.

A recess (3 a-th recess 60d) is provided in the 3 rd rear surface 60b of the 3 rd cover portion 60. The 3 a-th recessed portion 60d is rectangular, for example, and is recessed downward from the 3 a-th rear surface portion 60b of the 3 a-th cover portion 60, the upper ends of the right and left side portions, and a portion where the 3 b-th cover portion 70 and the 3 a-th cover portion 60 meet.

The 3 b-th recess 70c and the 3 a-th recess 60d are disposed at positions facing each other. Therefore, when the 3a cover part 60 is attached to the 3b cover part 70, the insertion part 48 is provided between the 3a cover part 60 and the 3b cover part 70 through the 3b concave part 70c and the 3a concave part 60 d.

As shown in fig. 4 and 5, the 1 st seal portion 71 is provided in the 3 b-th cover portion 70 (main body), and the 2 nd seal portion 61 is provided in the 3 a-th cover portion 60 (lid). The 1 st seal portion 71 and the 2 nd seal portion 61 are formed of an elastic member such as a sponge, and have a rectangular flat plate shape, for example.

The 1 st seal portion 71 is disposed inside the 3b rear surface portion 70b and extends upward beyond the end (upper end) of the 3b rear surface portion 70b, the other end (lower end) of the 1 st seal portion 71 reaches, for example, the lower surface portion 70a of the 3b cover portion 70, the lower side portion of the 1 st seal portion 71 overlaps the 3b rear surface portion 70b, the 2 nd seal portion 61 is disposed inside the 3a rear surface portion 60b and extends downward beyond the end (lower end) of the 3a rear surface portion 60b, and the upper side portion of the 2 nd seal portion 61 overlaps the 3a rear surface portion 60 b.

The thickness of the 1 st seal 71 in the front-rear direction is equal to the thickness of the 2 nd seal 61 in the front-rear direction, and the width of the 1 st seal 71 in the left-right direction is equal to the width of the 2 nd seal 61 in the left-right direction. When the 3a cover part 60 is attached to the 3b cover part 70, the 1 st seal part 71 and the 2 nd seal part 61 are arranged such that the upper end of the 1 st seal part 71 and the lower end of the 2 nd seal part 61 face each other.

The 1 st sealing portion 71 is provided with a 1 st groove 72 into which the cable 38 of the electric component is fitted. The 1 st grooves 72 are arranged at intervals in the left-right direction along the upper end of the 1 st seal portion 71. Thus, the plurality of 1 st slots 72 are aligned along the boundary of the 3 b-th cover portion 70 (body) and the 3 a-th cover portion 60 (lid).

The 1 st groove 72 is recessed from the opening portion 60c of the 3 b-th cover portion 70 and extends downward from the upper end of the 1 st sealing portion 71. The 1 st seal portion 71 extends in the thickness direction (front-rear direction) of the 1 st seal portion 71 and penetrates the 1 st seal portion 71. The 1 st groove 72 is formed in an arc shape on a plane perpendicular to the front-rear direction, and for example, is formed in an arc shape having a central angle larger than 180 degrees and larger than a semicircle. The radius of the 1 st slot 72 is less than the radius of the cable 38. The bottom of the 1 st groove 72 is located above the upper end of the 3 b-th rear surface 70b, and the 1 st groove 72 does not overlap the 3 b-th rear surface 70 b.

Further, the opening portion 60c is opened in a direction in which the 1 st groove 72 extends and in a direction in which the 1 st groove 72 opens opposite to the direction in which the 1 st groove 72 is recessed. In other words, the 1 st groove 72 extends in the front-rear direction, is recessed downward, and opens upward. The 1 st groove 72 extends in a direction orthogonal to the 3 rd posterior surface 60b of the 3 rd cover portion 60, and the 1 st groove 72 opens to the upper surface 60 a. Therefore, by removing the 3 rd cover portion 60 from the 3 rd cover portion 70, the rear side (the direction in which the 1 st groove 72 extends) is opened by the 3 rd rear surface portion 60b, and the upper side (the direction in which the 1 st groove 72 opens) is opened by the upper surface portion 60 a. This allows the cable 38 to be easily fitted from the opening 60c into the 1 st groove 72.

The 2 nd sealing portion 61 is provided with a 2 nd groove 62 into which the cable 38 of the electric component is fitted. The plurality of 2 nd grooves 62 are arranged in the left-right direction along the lower end of the 2 nd seal part 61 with a space therebetween. The 2 nd groove 62 is recessed upward from the lower end of the 2 nd seal part 61. The 2 nd seal part 61 extends in the thickness direction (front-rear direction) of the 2 nd seal part 61 and penetrates the 2 nd seal part 61.

The 2 nd groove 62 has an arc shape on a plane perpendicular to the front-rear direction, and as will be described later, the center angle of the arc shape of the 2 nd groove 62 is set so that the 1 st groove 72 and the 2 nd groove 62 form a circular shape when the 1 st seal portion 71 and the 2 nd seal portion 61 are compressed to with each other, the radius of the 2 nd groove 62 is smaller than the radius of the cable 38, the bottom of the 2 nd groove 62 is located below the lower end of the 3 rd rear surface portion 60b, and the 2 nd groove 62 does not overlap the 3 rd rear surface portion 60 b.

The 2 nd groove 62 is disposed at a position corresponding to the 1 st groove 72 in the up-down direction in a state where the 3 rd cover portion 60 (lid) covers the opening portion 60c of the 3b cover portion 70 (main body). Thus, the opening is formed by the 1 st groove 72 and the 2 nd groove 62 in the housing formed by the main body and the cover. The opening is disposed opposite the insertion portion 48 of the housing on the inside and outside of the housing. Thus, the cable 38 can extend outwardly from within the housing via the opening and the insert 48.

The 1 st outer support portion 73 is laminated on the outer side of the 1 st seal portion 71, and the 2 nd outer support portion 63 is laminated on the outer side of the 2 nd seal portion 61. The 1 st outer support portion 73 is harder than the 1 st seal portion 71, and is formed of an elastic member such as rubber harder than the 1 st seal portion 71, for example. The 2 nd outer support 63 is harder than the 2 nd seal 61, and is formed of an elastic member such as rubber harder than the 2 nd seal 61.

The 1 st outer support portion 73 is disposed between and fixed to the 1 st seal portion 71 and the 3 rd rear surface portion 70 b. The upper end of the 1 st outer support 73 is located above the upper end of the 3 b-th rear surface 70b, and the 1 st outer support 73 is exposed outside the 3 b-th rear surface 70 b. The upper end of the 1 st outer support 73 is located below the upper end of the 1 st seal portion 71, and the upper portion of the 1 st seal portion 71 protrudes above the 1 st outer support 73.

The 2 nd outer support portion 63 is disposed between and fixed to the 2 nd seal portion 61 and the 3 rd rear surface portion 60 b. The lower end of the 2 nd outer support portion 63 is located below the lower end of the 3 rd rear surface portion 60b, and the 2 nd outer support portion 63 is exposed outside the 3 rd rear surface portion 60 b. The lower end of the 2 nd outer support portion 63 is located above the lower end of the 2 nd seal portion 61, and the lower portion of the 2 nd seal portion 61 protrudes below the 2 nd outer support portion 63.

The thickness of the 1 st outer support portion 73 in the front-rear direction is equal to the thickness of the 2 nd outer support portion 63 in the front-rear direction, and the width of the 1 st outer support portion 73 in the left-right direction is equal to the width of the 2 nd outer support portion 63 in the left-right direction. When the 3a cover part 60 is attached to the 3b cover part 70, the 1 st outer support part 73 and the 2 nd outer support part 63 are arranged such that the upper end of the 1 st outer support part 73 and the lower end of the 2 nd outer support part 63 face each other.

The 1 st outer support 73 is provided with a 1 st outer groove 74 into which the cable 38 of the electric component is fitted. The 1 st outer grooves 74 are arranged at intervals in the left-right direction along the upper ends of the 1 st outer support portions 73. The 1 st outer groove 74 is recessed from the opening portion 60c of the 3 b-th cover portion 70 and extends downward from the upper end of the 1 st outer support portion 73. Extends in the thickness direction (front-rear direction) of the 1 st outer support 73, and penetrates the 1 st outer support 73. The 1 st outer groove 74 has an arc shape on a plane perpendicular to the front-rear direction, and has a semicircular shape with a center angle of 180 degrees, for example. The radius of the 1 st outboard slot 74 is equal to the radius of the cable 38 or slightly larger than the radius of the cable 38. The 1 st outer groove 74 is arranged to have a radius larger than that of the 1 st groove 72 and to surround the 1 st groove 72. The bottom of the 1 st outer groove 74 is located above the 3b rear surface 70b, and the 1 st outer groove 74 does not overlap the 3b rear surface 70 b.

The 2 nd outer support portion 63 is provided with a 2 nd outer groove 64 into which the cable 38 of the electric component is fitted. The plurality of 2 nd outer slots 64 are arranged in the left-right direction along the upper end of the 2 nd outer support 63 with a space therebetween. The 2 nd outer groove 64 is recessed upward from the lower end of the 2 nd outer support portion 63. The 2 nd outer support portion 63 extends in the thickness direction (front-rear direction) of the 2 nd outer support portion 63 and penetrates the 2 nd outer support portion 63. The 2 nd outer groove 64 has an arc shape on a plane perpendicular to the front-rear direction, and has a semicircular shape with a central angle of 180 degrees, for example. The 2 nd outboard slot 64 has a radius that is equal to or slightly larger than the radius of the cable 38. The 2 nd outer groove 64 is arranged to have a radius larger than that of the 2 nd groove 62 and to surround the 2 nd groove 62. The bottom of the 2 nd outer groove 64 is located below the 3 rd rear surface portion 60b, and the 2 nd outer groove 64 does not overlap the 3 rd rear surface portion 60 b.

The 1 st inner support portion 75 is laminated on the inner side of the 1 st seal portion 71, and the 2 nd inner support portion 65 is laminated on the inner side of the 2 nd seal portion 61. The 1 st inner support portion 75 is harder than the 1 st seal portion 71, and is formed of, for example, metal or resin. The 2 nd inner support portion 65 is harder than the 2 nd seal portion 61, and is formed of, for example, metal or resin.

The 1 st inner support 75 is disposed so as to sandwich the 1 st seal 71 with the 1 st outer support 73 and fixed to the 3b th rear surface 70b from these points, the 1 st inner support 75 has, for example, the same shape as the 1 st outer support 73, and has an upper end located above the upper end of the 3b th rear surface 70b, and the upper end of the 1 st inner support 75 is located below the upper end of the 1 st seal 71, and the upper side of the 1 st seal 71 protrudes upward beyond the 1 st inner support 75.

The 2 nd inner support part 65 is arranged so as to sandwich the 2 nd seal part 61 with the 2 nd outer support part 63 and fixed to the 3 rd rear surface part 60b from these . the 2 nd inner support part 65 has, for example, the same shape as the 2 nd outer support part 63, and has a lower end located below the lower end of the 3 rd rear surface part 60 b. further, the lower end of the 2 nd inner support part 65 is located above the lower end of the 2 nd seal part 61, and the lower portion of the 2 nd seal part 61 protrudes below the 2 nd inner support part 65.

The 1 st inner support 75 is provided with a 1 st inner groove 76 into which the cable 38 of the electric component is fitted. The 1 st inner grooves 76 are arranged at intervals in the left-right direction along the upper end of the 1 st inner support 75. The 1 st inner slot 76 is recessed from the opening portion 60c of the 3 b-th cover portion 70 and extends downward from the upper end of the 1 st inner support portion 75. Extends in the thickness direction (front-rear direction) of the 1 st inner support 75, and penetrates the 1 st inner support 75. The 1 st inner groove 76 has an arc shape on a plane perpendicular to the front-rear direction, and has a semicircular shape with a central angle of 180 degrees, for example.

The radius of the 1 st inboard slot 76 may be slightly larger than the radius of the cable 38 and slightly larger than the radius of the 1 st outboard slot 74. In addition, the 1 st inner slot 76 has a radius larger than that of the 1 st slot 72, and is arranged to surround the 1 st slot 72. Thus, the 1 st outer slot 74, the 1 st slot 72, and the 1 st inner slot 76 are arranged in this order in the longitudinal direction (front-rear direction) of the cable 38, and the inside and outside of the 3 b-th cover portion 70 communicate with each other through these slots. The bottom of the 1 st inner groove 76 is located above the 3b rear surface 70b, and the 1 st inner groove 76 does not overlap the 3b rear surface 70 b.

The 2 nd inner support portion 65 is provided with a 2 nd inner groove 66 into which the cable 38 of the electrical component is fitted. The plurality of 2 nd inner slots 66 are arranged in the left-right direction along the upper end of the 2 nd inner support portion 65 with a space therebetween. The 2 nd inner groove 66 is recessed upward from the lower end of the 2 nd inner support portion 65. Extends in the thickness direction (front-rear direction) of the 2 nd inner support portion 65, and penetrates the 2 nd inner support portion 65. The 2 nd inner groove 66 has an arc shape on a plane perpendicular to the front-rear direction, and has a semicircular shape with a central angle of 180 degrees, for example.

The radius of the 2 nd inner slot 66 is equal to or slightly larger than the radius of the cable 38. In addition, the 2 nd inner slot 66 has a radius larger than that of the 2 nd slot 62 and is configured to surround the 2 nd slot 62. Thus, the 2 nd outer slot 64, the 2 nd slot 62, and the 2 nd inner slot 66 are arranged in this order in the longitudinal direction (front-rear direction) of the cable 38, and the inside and the outside of the 3 a-th cover portion 60 communicate with each other through these slots. The bottom of the 2 nd inner groove 66 is located below the 3 rd rear surface portion 60b, and the 2 nd inner groove 66 does not overlap the 3 rd rear surface portion 60 b.

Next, a method of attaching the 3 rd cover 41 to the housing 20 will be described with reference to fig. 3 to 6. First, as shown in fig. 4, the 1 st cover 39, the 2 nd cover 40, and the 3 rd cover portion 70 of the 3 rd cover 41 are attached to the housing 20 by screws or the like. Then, the cable 38 of the electric component in the housing 20 is drawn out from the through hole 27 of the rear wall 23 to the 3 b-th cover portion 70.

Then, as shown in fig. 5, the cable 38 is fitted from the opening portion 60c of the 3 b-th cover portion 70 to the 1 st groove 72 of the 1 st sealing portion 71. Thereby, the cable 38 is positioned and supported by the 1 st sealing portion 71. Therefore, the position of the cable 38 does not need to be maintained.

At this time, since the radius of the 1 st groove 72 is smaller than the radius of the cable 38 and the 1 st sealing portion 71 is formed of a flexible elastic member, the 1 st sealing portion 71 is deformed by the cable 38. The 1 st seal portion 71 compressed by the cable 38 is in close contact with the cable 38, and the space between them is sealed.

In addition, the 1 st groove 72 is formed in an arc shape having a central angle larger than 180 degrees. Therefore, the length of the opening of the 1 st slot 72 is smaller than the radius of the cable 38 in the left-right direction. Therefore, the cable 38 fitted into the 1 st groove 72 is less likely to fall out of the opening of the 1 st groove 72, and the cable 38 is more reliably held in the 1 st groove 72.

Next, as shown in fig. 3 and 6, when the 3a cover part 60 is attached to the 3b cover part 70, the 1 st seal part 71 projects upward from the 1 st outer support part 73, and the 2 nd seal part 61 projects downward from the 2 nd outer support part 63, and therefore, the 1 st seal part 71 and the 2 nd seal part 61 abut before the 1 st outer support part 73 and the 2 nd outer support part 63 abut, the 1 st seal part 71 and the 2 nd seal part 61 formed of soft elastic members deform and compress each other to , and thereby the gaps between the 1 st seal part 71 and the 2 nd seal part 61 themselves and between the 1 st seal part 71 and the 2 nd seal part 61 formed of sponge are filled, and the gaps between the 1 st seal part 71 and the 2 nd seal part 61 are sealed more reliably.

Further, the 1 st groove 72 and the 2 nd groove 62 are disposed to face each other in the vertical direction, whereby when the 2 nd seal 61 is overlapped on the 1 st seal 71, the upper portion of the cable 38 whose lower portion is fitted into the 1 st groove 72 is fitted into the 2 nd groove 62, and the 1 st groove 72 and the 2 nd groove 62 are formed in a circular shape by compressing the 1 st seal 71 and the 2 nd seal 61 to each other at , and the 1 st seal 71 and the 2 nd seal 61 can be uniformly brought into close contact with the cable 38, so that the mutual sealing is more reliably performed.

The 1 st seal portion 71 is sandwiched between the 1 st outer support portion 73 and the 1 st inner support portion 75. Therefore, the 1 st sealing portion 71 is prevented from falling in the longitudinal direction of the cable 38 when the 1 st sealing portion 71 is pressed by the cable 38. In addition, when the 1 st seal portion 71 is deformed by the cable 38, the 1 st seal portion 71 is prevented from being enlarged in the longitudinal direction of the cable 38. Thereby, the 1 st seal portion 71 is compressed in the radial direction orthogonal to the longitudinal direction of the cable 38, and the 1 st seal portion 71 itself and the gap between the 1 st seal portion 71 and the cable 38 are more reliably sealed.

Similarly, the 2 nd seal part 61 is sandwiched by the 2 nd outer support part 63 and the 2 nd inner support part 65. Therefore, the 2 nd seal part 61 can be prevented from falling in the longitudinal direction of the cable 38 when the 2 nd seal part 61 is pressed by the cable 38. In addition, when the 2 nd seal part 61 is deformed by the cable 38, the 2 nd seal part is prevented from being enlarged in the longitudinal direction of the cable 38. Thereby, the 2 nd seal part 61 is compressed in the radial direction orthogonal to the longitudinal direction of the cable 38, and the 2 nd seal part 61 itself and the gap between the 2 nd seal part 61 and the cable 38 are more reliably sealed.

Next, the upper end of the 1 st outer support 73 and the lower end of the 2 nd outer support 63 abut against each other, and the space therebetween is closed. Thereby being sealed therebetween. The 3 rd rear surface portion 60b and the 3 rd rear surface portion 70b are coplanar to form a rear surface portion of the 3 rd cover 41.

The 1 st outer support portion 73 and the 2 nd outer support portion 63 are harder than the 1 st seal portion 71 and the 2 nd seal portion 61 and are exposed to the outside of the 1 st seal portion 71 and the 2 nd seal portion 61. Therefore, the 1 st outer support portion 73 and the 2 nd outer support portion 63 can prevent foreign matter such as wires from entering the 3 rd cover 41 from the outside.

The cable 38 attached to the 3 rd cover 41 is covered by the housing 20 and the 3 rd cover 41 on the inner side of the 1 st inner support 75 and the 2 nd inner support 65, and therefore hardly moves. Therefore, the cable 38 is less likely to move and hit the 1 st inner support 75 and the 2 nd inner support 65, and be damaged. Therefore, although the strength of supporting only the 1 st seal portion 71 and the 2 nd seal portion 61 is high, inexpensive materials can be used for the 1 st inner support portion 75 and the 2 nd inner support portion 65, and cost reduction of the electric device 10 can be achieved.

In contrast, the portion of cable 38 outside of 1 st outer support 73 and 2 nd outer support 63 is exposed to the outside, and therefore, the movement is large. Therefore, the cable 38 often moves and hits the 1 st outer support 73 and the 2 nd outer support 63. However, since the 1 st outer support portion 73 and the 2 nd outer support portion 63 are formed of an elastic member, the movement of the cable 38 can be suppressed. Further, even if cable 38 strikes 1 st outer support 73 and 2 nd outer support 63, deformation of 1 st outer support 73 and 2 nd outer support 63 is reduced, and cable 38 is less damaged.

According to such a configuration, the electric device 10 includes the housing 20 and the 3b cover portion 70 (main body) that house the electric components, the 3a cover portion 60 (cover) that covers the open portion 60c of the 3b cover portion 70, the 1 st seal portion 71 provided in the 3b cover portion 70, the 1 st groove 72 that is recessed from the open portion 60c, is formed in the 1 st seal portion 71, and into which the cable 38 of the electric component is fitted, the 2 nd seal portion 61 provided in the 3a cover portion 60, and the 2 nd groove 62 that is opposed to the 1 st groove 72, is formed in the 2 nd seal portion 61, and into which the cable 38 of the electric component is fitted.

Accordingly, the cable 38 is fitted into the 1 st groove 72 and the 2 nd groove 62 facing each other, whereby the cable 38 is positioned and supported. Therefore, by mounting the 3 a-th cover part 60 only on the 3 b-th cover part 70, the cable 38 and the 3 b-th and 3 a-th cover parts 70 and 60 can be easily sealed by the 1 st and 2 nd seal parts 71 and 61.

The 1 st groove 72 is formed in an arc shape having a central angle larger than 180 degrees and a radius smaller than that of the cable 38. Thus, the cables 38 fitted into the 1 st grooves 72 are in close contact with the 1 st sealing portion 71, and the space between them is sealed. Further, the cable 38 is not easily detached from the 1 st groove 72, and the cable 38 can be easily held.

The 1 st seal portion 71 and the 2 nd seal portion 61 are made of elastic members, and are compressed at when the opening portion 60c is covered with the 3 rd covering portion 60, thereby filling the gap between the 1 st seal portion 71 itself, the 2 nd seal portion 61 itself, and the 1 st seal portion 71 and the 2 nd seal portion 61 and securing the sealing properties thereof.

Further, the 1 st and 2 nd seal parts 71 and 61 compressed to form the 1 st and 2 nd grooves 72 and 62 into a circular shape, whereby the 1 st and 2 nd seal parts 71 and 61 are uniformly brought into close contact with the cable 38 fitted in the 1 st and 2 nd grooves 72 and 62, and the sealing property is secured.

The electric device 10 further includes a 1 st outer support 73 which is laminated on the outer side of the 1 st sealing portion 71 and is harder than the 1 st sealing portion 71, and a 1 st outer groove 74 which is provided in the 1 st outer support 73 and surrounds the 1 st groove 72. The electric device 10 further includes a 2 nd outer support 63 laminated on the outer side of the 2 nd sealing part 61 and harder than the 2 nd sealing part 61, and a 2 nd outer groove 64 provided in the 2 nd outer support 63 and surrounding the 2 nd groove 62. The 1 st outer support portion 73 and the 2 nd outer support portion 63 exposed to the outside can prevent foreign matter from entering the 3b cover portion 70 from the outside. Further, the 1 st outer support portion 73 and the 2 nd outer support portion 63 can support the cables 38 fitted into the 1 st outer groove 74 and the 2 nd outer groove 64 without damaging the cables.

The electric device 10 further includes a 1 st outer support 73 laminated on the outer side of the 1 st seal 71 and harder than the 1 st seal 71, a 1 st outer groove 74 provided in the 1 st outer support 73 and surrounding the 1 st groove 72, a 1 st inner support 75 laminated on the inner side of the 1 st seal 71 and harder than the 1 st seal 71, and a 1 st inner groove 76 provided in the 1 st inner support 75 and surrounding the 1 st groove 72. The electric device 10 further includes a 2 nd outer support 63 laminated on the outer side of the 2 nd seal 61 and harder than the 2 nd seal 61, a 2 nd outer groove 64 provided in the 2 nd outer support 63 and surrounding the 2 nd groove 62, a 2 nd inner support 65 laminated on the inner side of the 2 nd seal 61 and harder than the 2 nd seal 61, and a 2 nd inner groove 66 provided in the 2 nd inner support 65 and surrounding the 2 nd groove 62. Thus, the 1 st seal portion 71 is sandwiched between the 1 st outer support portion 73 and the 1 st inner support portion 75, and therefore, is prevented from being inclined or expanded in the inner and outer directions. Since the 2 nd seal part 61 is sandwiched between the 2 nd outer support part 63 and the 2 nd inner support part 65, the inclination or the enlargement in the inner and outer sides is prevented. Therefore, the 1 st seal portion 71 and the 2 nd seal portion 61 extend in the radial direction of the cable 38, and are in close contact with the cable 38, and can seal therebetween.

Further, a plurality of 1 st grooves 72 are provided in a row in the 1 st seal portion 71, and a plurality of 2 nd grooves 62 are provided in a row in the 2 nd seal portion 61. Thus, the plurality of cables 38 can be easily attached while securing sealing only by fitting the plurality of cables 38 into the plurality of 1 st grooves 72 and 2 nd grooves 62 and attaching the 3 a-th cover portion 60 to the 3 b-th cover portion 70.

(other embodiments)

The present invention is not limited to the embodiments described above and illustrated in the drawings, and for example, the following embodiments are also included in the technical scope of the present invention.

All the above embodiments may be combined with each other as long as they do not exclude each other. From the above description, it will be apparent to those skilled in the art that many modifications and other embodiments of the present invention are possible. Therefore, the foregoing description should be construed as exemplary only and is provided for the purpose of teaching those skilled in the art the best mode of carrying out the invention. The details of the structure and/or function of the present invention can be substantially changed without departing from the spirit of the present invention.

Industrial applicability of the invention

The electric device of the present invention is useful as an electric device or the like capable of easily ensuring sealing performance.

Description of reference numerals

10: electrical device

20: outer cover (Main body)

38: cable with a flexible connection

48: insertion part

60: cover part (lid) of 3 rd a

61: 2 nd seal part

60 c: opening part

62: 2 nd groove

63: 2 nd outer support part

64: 2 nd outer groove

65: 2 nd inner support part

66: inner side groove 2

70: 3b cover part (Main body)

71: 1 st seal part

72: 1 st groove

73: 1 st outer support part

74: 1 st outer groove

75: 1 st inner support part

76: 1 st inner side groove