阅读说明：本技术 电动工具 (Electric tool ) 是由 陈治国 邵延晓 于 2020-05-27 设计创作，主要内容包括：本发明公开了一种电动工具,包括：输出件,用于安装工作附件；电机,用于驱动输出件运动；机壳,用于容纳至少部分电机,机壳包括用于供用户握持的握持部和用于可拆卸的结合电池包的结合部；电动工具还包括：锁定件,具有使得工作附件相对输出件固定的锁定状态和允许工作附件能被拆卸的释放状态；操作件,包括用于供用户操作的操作部和用于驱动锁定件在锁定状态和释放状态之间切换的驱动部；机壳还包括：安装部,用于可拆卸的安装操作件；其中,安装部形成有安装槽,操作件能被至少部分插入至安装槽内；安装槽设置在握持部和结合部之间。该电动工具方便用户操作且提高了用户的工作效率。(The invention discloses an electric tool, comprising: an output for mounting a work attachment; the motor is used for driving the output piece to move; the shell is used for accommodating at least part of the motor and comprises a holding part for being held by a user and a combining part for detachably combining the battery pack; the electric power tool further includes: a locking member having a locked state in which the working attachment is fixed relative to the output member and a released state in which the working attachment is allowed to be detached; an operating member including an operating portion for user operation and a driving portion for driving the locking member to switch between the locked state and the released state; the casing still includes: a mounting portion for detachably mounting an operating member; wherein, the mounting part is formed with a mounting groove, and the operating member can be at least partially inserted into the mounting groove; the mounting groove is arranged between the holding part and the combining part. The electric tool is convenient for the user to operate and improves the working efficiency of the user.)

1. A power tool, comprising:

an output for mounting a work attachment;

the motor is used for driving the output piece to move;

the casing is used for accommodating at least part of the motor and comprises a holding part for holding by a user and a combining part for detachably combining the battery pack;

the method is characterized in that:

the electric power tool further includes:

a lock having a locked state in which the working attachment is fixed relative to the output member and a released state in which the working attachment is allowed to be removed;

an operating member including an operating portion for a user to operate and a driving portion for driving the locking member to switch between the locked state and the released state;

the housing further includes:

a mounting portion for detachably mounting the operating member;

wherein the mounting part is formed with a mounting groove into which the operating piece can be at least partially inserted;

the mounting groove is arranged between the holding part and the combining part;

the holding part basically extends along a first straight line direction, the operating piece is guided by the installation groove to be combined to the installation groove along a second straight line direction, and the first straight line direction and the second straight line direction are intersected to form an included angle which is larger than or equal to 45 degrees and smaller than or equal to 90 degrees.

2. The power tool of claim 1, wherein:

and the no-load rotating speed of the motor is more than or equal to 15000r/min and less than or equal to 35000 r/min.

3. The power tool of claim 2, wherein:

the motor is brushless motor, the portion of gripping is around being formed with and holds the chamber, the motor is at least partly located hold the intracavity.

4. The power tool of claim 3, wherein:

the electric power tool further includes:

the first circuit board is arranged in the accommodating cavity;

the second circuit board is arranged in the accommodating cavity;

wherein, first circuit board sets up the motor with between the installation department, the second circuit board sets up the motor with between the installation department.

5. The power tool of claim 4, wherein:

the first circuit board extends in a first plane parallel to the first straight line, and the projection of the second circuit board in the first plane is at least partially overlapped with the projection of the first circuit board in the first plane.

6. The power tool of claim 1, wherein:

the coupling part is formed with a guide structure for guiding the battery pack to be mounted to the coupling part in a third linear direction, which is parallel to the second linear direction.

7. The power tool of claim 1, wherein:

the joint portion is further provided with:

the access terminal is used for electrically connecting with the battery pack;

the electric power tool further includes:

a circuit board assembly for controlling the motor;

an electric wire for electrically connecting the access terminal and the circuit board assembly;

wherein, the casing forms or is connected with the spacing portion that is used for restricting the electric wire so that the electric wire avoids the mounting groove.

8. The power tool of claim 1, wherein:

the joint portion is further provided with:

the access terminal is used for electrically connecting with the battery pack;

the electric power tool further includes:

a circuit board assembly for controlling the motor;

an electric wire for electrically connecting the access terminal and the circuit board assembly;

wherein the housing is further formed with a partition plate which partitions the mounting groove and the access terminal;

the partition plate is formed with a through hole allowing the electric wire to pass therethrough, the through hole being located outside the mounting groove.

9. The power tool of claim 1, wherein:

the housing comprises separable first and second housing portions, the grip portion being formed when the first housing portion is mated to the second housing portion in a fourth linear direction;

the size of the mounting groove in the fourth linear direction is L; in the fourth linear direction, a 0.7L-sized area of the mounting groove is located in the first housing portion.

10. The power tool of claim 1, wherein:

the holding part is basically symmetrical about a plane, and the area of the mounting groove arranged on the first side of the plane is larger than the area of the mounting groove arranged on the second side of the plane.

11. The power tool of claim 1, wherein:

the electric tool also comprises a limiting piece which is used for preventing the operating piece from being separated from the mounting groove when the operating piece is inserted into the mounting groove and is subjected to an acting force smaller than a preset value; the limiting piece is provided with a contact part used for being in contact with the operating piece, and the ratio of the distance from the contact part to the notch to the distance from the contact part to the groove bottom is larger than or equal to 1.5 and smaller than or equal to 5.

12. A power tool, comprising:

an output for mounting a work attachment;

the motor is used for driving the output piece to move;

the casing is used for accommodating at least part of the motor and comprises a holding part for holding by a user and a combining part for detachably combining the battery pack;

the method is characterized in that:

the electric power tool further includes:

a lock having a locked state in which the working attachment is fixed relative to the output member and a released state in which the working attachment is allowed to be removed;

an operating member including an operating portion for a user to operate and a driving portion for driving the locking member to switch between the locked state and the released state;

the housing further includes:

a mounting portion for detachably mounting the operating member;

wherein the mounting part is formed with a mounting groove into which the operating piece can be at least partially inserted;

the mounting groove is arranged between the holding part and the combining part.

Technical Field

The invention relates to an electric tool, in particular to an electric tool capable of forming holes in a wall surface.

Background

Existing power tools typically include a lock for mounting a working accessory. When the user needs to remove or install the work attachment, the user needs to use an auxiliary tool to unlock the locking member so that the user can remove the work attachment. However, with existing power tools, when a user needs to remove or install a work attachment, it is often necessary to find an auxiliary tool from a tool box or a work bench. However, if the auxiliary tool is in the tool box, when the user does not have the tool box at his side, for example, when the user works at high altitude, or when the user works at other places, the user cannot find a suitable auxiliary tool, so that it is difficult to detach and install the working attachment. Or even if the auxiliary tool is placed on the workbench, the situation that the user places the auxiliary tool at any time when the auxiliary tool is used up and forgets the placement position of the auxiliary tool when the auxiliary tool is used next time is easy to occur, so that the working efficiency is reduced.

Disclosure of Invention

In order to solve the defects of the prior art, the invention aims to provide an electric tool which is convenient for a user to operate and has a smaller size of the whole machine.

In order to achieve the above object, the present invention adopts the following technical solutions:

a power tool, comprising: an output for mounting a work attachment; the motor is used for driving the output piece to move; the shell is used for accommodating at least part of the motor and comprises a holding part for being held by a user and a combining part for detachably combining the battery pack; the electric power tool further includes: a locking member having a locked state in which the working attachment is fixed relative to the output member and a released state in which the working attachment is allowed to be detached; an operating member including an operating portion for user operation and a driving portion for driving the locking member to switch between the locked state and the released state; the casing still includes: a mounting portion for detachably mounting an operating member; wherein, the mounting part is formed with a mounting groove, and the operating member can be at least partially inserted into the mounting groove; the mounting groove is arranged between the holding part and the combining part; the holding part basically extends along a first straight line direction, the installation groove guide operation piece is combined to the installation groove along a second straight line direction, and the first straight line direction and the second straight line direction are intersected to form an included angle which is larger than or equal to 45 degrees and smaller than or equal to 90 degrees.

In an optional embodiment, the no-load rotating speed of the motor is greater than or equal to 15000r/min and less than or equal to 35000 r/min.

In an alternative embodiment, the motor is a brushless motor, the holding portion is formed with a receiving cavity around the holding portion, and the motor is at least partially located in the receiving cavity.

In an alternative embodiment, the power tool further comprises: the first circuit board is arranged in the accommodating cavity; the second circuit board is arranged in the accommodating cavity; wherein, the first circuit board sets up between motor and installation department, and the second circuit board sets up between motor and installation department.

In an alternative embodiment, the first circuit board extends in a first plane parallel to the first line, and the projection of the second circuit board in the first plane at least partially overlaps the projection of the first circuit board in the first plane.

In an alternative embodiment, the coupling portion is formed with a guide structure for guiding the battery pack to be mounted to the coupling portion in a third linear direction, the third linear direction and the second linear direction being parallel to each other.

In an alternative embodiment, the joint is further provided with: an access terminal for making electrical connection with the battery pack; the electric power tool further includes: a circuit board assembly for controlling the motor; an electric wire for electrically connecting the access terminal and the circuit board assembly; wherein, the casing forms or is connected with the spacing portion that is used for restricting the electric wire so that the electric wire avoids the mounting groove.

In an alternative embodiment, the joint is further provided with: an access terminal for making electrical connection with the battery pack; the electric power tool further includes: a circuit board assembly for controlling the motor; an electric wire for electrically connecting the access terminal and the circuit board assembly; the shell is also provided with a partition board which separates the mounting groove from the access terminal; the partition plate is formed with a through hole allowing the electric wire to pass therethrough, the through hole being located outside the mounting groove.

In an alternative embodiment, the housing comprises first and second separable housing portions, the grip portion being formed when the first housing portion is mated to the second housing portion in the fourth linear direction; the size of the mounting groove in the fourth linear direction is L; in the fourth linear direction, an area of the mounting groove of 0.7L size is located in the first housing portion.

In an alternative embodiment, the grip portion is substantially symmetrical about a plane, and the area of the region of the mounting slot disposed on a first side of the plane is greater than the area of the region of the mounting slot disposed on a second side of the plane.

In an alternative embodiment, the mounting groove comprises a notch and a groove bottom opposite to the notch, and the electric tool further comprises a limiting piece used for preventing the operating member from being separated from the mounting groove when the operating member is inserted into the mounting groove and is subjected to an acting force smaller than a preset value; the limiting piece is provided with a contact part used for being in contact with the operating piece, and the ratio of the distance from the contact part to the notch to the distance from the contact part to the groove bottom is larger than or equal to 1.5 and smaller than or equal to 5.

A power tool, comprising: an output for mounting a work attachment; the motor is used for driving the output piece to move; the shell is used for accommodating at least part of the motor and comprises a holding part for being held by a user and a combining part for detachably combining the battery pack; the electric power tool further includes: a locking member having a locked state in which the working attachment is fixed relative to the output member and a released state in which the working attachment is allowed to be detached; an operating member including an operating portion for user operation and a driving portion for driving the locking member to switch between the locked state and the released state; the casing still includes: a mounting portion for detachably mounting an operating member;

wherein, the mounting part is formed with a mounting groove, and the operating member can be at least partially inserted into the mounting groove; the mounting groove is arranged between the holding part and the combining part.

The invention has the advantages that: the operating member of the present invention is detachably mounted between the grip portion and the coupling portion of the housing, thereby facilitating the operation of the user and also reducing the size of the electric power tool.

Drawings

FIG. 1 is a block diagram of a power tool according to one embodiment of the present invention;

FIG. 2 is a block diagram of the power tool of FIG. 1 with the operator and battery pack separated from the main body;

FIG. 3 is a cross-sectional view of the host computer of FIG. 1;

FIG. 4 is a perspective view of the host of FIG. 1 with the second housing portion removed;

FIG. 5 is an exploded view of the locking member, output shaft and working attachment of FIG. 1;

FIG. 6 is a perspective view of a second housing portion of the host computer of FIG. 1;

FIG. 7 is a perspective view of the host computer of FIG. 1 at an angle;

FIG. 8 is a perspective view of the host computer of FIG. 1 from another angle;

FIG. 9 is a plan view of the host computer of FIG. 1;

FIG. 10 is a plan view of the first housing portion and the stop member of the host computer of FIG. 7;

FIG. 11 is a perspective view of the limiter of FIG. 10;

FIG. 12 is a perspective view of the operating member of FIG. 2.

Detailed Description

The power tool 200 shown in fig. 1 is used for a user to punch holes in a wall surface or a workpiece, or to cut grooves of different shapes in a wall surface or a workpiece. For example, the power tool 200 cuts a rectangular groove, which can be used for installing a switch, on a wall surface or a workpiece according to a certain track by installing the working attachment 300. The power tool 200 may also engrave a pattern on a wall or workpiece by mounting the working components. In this embodiment, the wall surface or the workpiece is a gypsum board, or the wall surface may include a gypsum board.

As shown in fig. 1, the electric power tool 200 includes: a host 20a and a battery pack 24, the battery pack 24 being removably attachable to the host 20a and being capable of providing a source of energy to the host 20a when the battery pack 24 is attached to the host 20 a. As shown in fig. 1 to 4, the host 20a includes: a housing 21, a motor 22 and an output 23. The housing 21 is configured to accommodate at least a portion of the motor 22, the motor 22 is configured to output power to drive the output member 23 to move, and the output member 23 is configured to be connected to the work attachment 300 to drive the work attachment 300 to work on a wall surface or a workpiece.

As shown in fig. 5, the output member 23 includes a plurality of clamping portions 231 capable of clamping the working attachment 300, the output member 23 is capable of being driven by the motor 22 to rotate about the first axis 201, and the plurality of clamping portions 231 are arranged in series in a circumferential direction around the first axis 201. The power tool 200 also includes a lock 251 for mounting the work attachment 300 to the output 23. The locking member 251 has a locked state and a released state. When the locking member 251 is in the locked state, the locking member 251 drives the plurality of clamping portions 231 to contract in a direction approaching the first axis 201, and the mounting hole surrounded by the plurality of clamping portions 231 is reduced, so that the clamping portions 231 clamp the working attachment 300 inserted into the mounting hole. When the locking member 251 is in the release state, the clamping portion 231 is expanded in a direction away from the first axis 201, and the mounting hole surrounded by the plurality of clamping portions 231 becomes large, so that the clamping portion 231 releases the working attachment 300 and the working attachment 300 can be pulled out from the mounting hole by the user.

In this embodiment, the locking member 251 is a moving member that is movable relative to the output member 23, and the locking member 251 is movable to a first position and a second position relative to the output member 23. When the lock 251 is in the first position, the lock 251 is in a locked state such that the output member 23 clamps the working attachment 300. When the lock 251 is located at the second position, the lock 251 is in a release state in which the output member 23 releases the working attachment 300. When the lock 251 is in the locked position, the work attachment 300 is fixed relative to the output member 23, the work attachment 300 may be locked directly to the output member 23 by the lock 251, the work attachment 300 may be locked to the output member 23 itself to be fixed relative to the output member 23, or the work attachment 300 may be an element that is driven by the lock 251 to lock the work attachment 300.

Specifically, in the present embodiment, the locking member 251 is a hexagonal nut, but it should be understood that the locking member 251 may be a nut with other specifications, or the locking member 251 may be another slidable sleeve. The locking member 251 has an inner wall formed with an internal thread, the power tool 200 further includes an output shaft 252 fixedly coupled to the output member 23, the output shaft 252 is coupled between the motor 22 and the output member 23, and an outer wall of the output shaft 252 is formed with an external thread. The locking member 251 is sleeved on the output shaft 252, and the locking member 251 can rotate relative to the output shaft 252 in a threaded mode. When the locking member 251 rotates relative to the output shaft 252, the locking member 251 can move relative to the output shaft 252 and the locking member 251 along the first axis 201. The locking member 251 is further formed with a first inclined surface 251a on an inner wall thereof, and the clamping portion 231 is formed with a second inclined surface 231 a. When the locking member 251 is moved relative to the output shaft 252 along the first axis 201 toward the motor 22, the first inclined surface 251a drives the second inclined surface 231a to contract the clamping portion 231 to clamp the working attachment 300. When the locking member 251 is moved away from the motor 22 along the first axis 201 with respect to the output shaft 252, the first inclined surface 251a releases the second inclined surface 231a, the clamping portion 231 releases the working attachment 300, and the working attachment 300 can be detached.

The power tool 200 further includes an operating member 400 for user operation, the operating member 400 being detachable with respect to the power tool 200. When the operation member 400 is detached from the electric power tool 200 by the user, the user can use the operation member 400 to drive the locking member 251 to switch between the locked state and the released state. When the user does not use the operation member 400, the operation member 400 is mounted on the housing 21 of the electric power tool 200, so that on one hand, the user can use the operation member 400 conveniently at any time and any place, and on the other hand, the problem that the operation accessory 300 is not easy to detach due to the loss of the operation member 400 can be avoided.

The housing 21 includes: the battery pack comprises a holding part 211, a combining part 212 and a mounting part 213, wherein the holding part 211 is used for being held by a user, the combining part 212 is used for being detachably combined with the battery pack 24, and the mounting part 213 is used for detachably mounting the operating piece 400. In the present embodiment, the housing 21 extends substantially along a first straight line 202 parallel to the first axis 201, the output member 23 is provided at one end portion of the housing 21, and the joint portion 212 is provided at the other end portion of the housing 21. The holding part 211 extends along the first straight line 202, the holding part 211 surrounds and forms an accommodating cavity 211a, and the motor 22 is at least partially arranged in the accommodating cavity 211a, so that the overall layout of the electric tool 200 is reasonable and the size is small. The power tool 200 further includes a circuit board assembly 26 for controlling the motor 22, and the circuit board assembly 26 is also disposed in the accommodation chamber 211a surrounded by the grip portion 211. The mounting part 213 is disposed between the holding part 211 and the combining part 212, the mounting part 213 is formed with a mounting groove 213a, and the operating element 400 can be inserted into the mounting groove 213a by a user, so that the operating element 400 can be effectively prevented from being lost, and the user can conveniently use the operating element 400 to detach or mount the working accessory 300 at any time and any place. The mounting portion 213 is disposed between the holding portion 211 and the coupling portion 212, so that the space between the holding portion 211 and the coupling portion 212 can be fully utilized, the size of the holding portion 211 is not increased, and the problem of uncomfortable holding of the user due to the thickening of the holding portion 211 is avoided. Further, the length of the grip portion 211 in the direction along the first straight line 202 does not increase, so that the electric power tool 200 is small in size. Further, since the mounting portion 213 is provided between the grip portion 211 and the coupling portion 212, and the size of the coupling portion 212 can be kept constant, the coupling portion 212 does not interfere with the hand of the user when the user grips the grip portion 211 with his hand, and the gripping comfort is improved. In the present embodiment, the combining portion 212 is disposed at one end of the holding portion 211, and the size of the combining portion 212 relative to the holding portion 211 in the direction perpendicular to the first straight line 202 is larger, so that when the housing 21 extends from the holding portion 211 to the combining portion 212, the size of the area between the holding portion 211 and the combining portion 212 becomes gradually larger, and the area can be fully utilized to dispose the mounting groove 213a without increasing the size of the housing 21 too much, thereby improving the utilization efficiency of the housing 21.

The groove wall of the mounting groove 213a also guides the operating element 400 to be combined to the mounting groove 213a along the second straight line 203, and the intersection of the second straight line 203 and the first straight line 202 forms an included angle of 45 degrees or more and 90 degrees or less. In the present embodiment, the operating element 400 is a wrench, and the wrench is a thin member, so that when the mounting portion 213 is disposed between the combining portion 212 and the holding portion 211, and the insertion direction of the operating element 400 is reasonably set relative to the extending direction of the holding portion 211, the space between the mounting portion 213 and the combining portion 212 can be fully utilized, and the size of the housing 21 in the direction along the first straight line 202 and the size of the combining portion 212 in the direction perpendicular to the first straight line 202 are not increased. It should be noted that the operating member 400 is coupled to the mounting groove 213a along the first straight line 202, and whether the operating member 400 is coupled to the mounting portion 213 to the left or to the right along the first straight line 202 is not limited. The included angle formed by the intersection of the direction of the second straight line 203 and the direction of the first straight line 202 is the included angle formed by the intersection of the straight line in which the insertion direction of the operating element 400 is located and the direction of the first straight line 202. Further, the direction of the second straight line 203 is perpendicular to the direction of the first straight line 202. In other embodiments, the operating member may be coupled to the housing from front to back, and the operating member may be coupled to the housing from back to front, where the direction in which the operating member is coupled to the housing is perpendicular to the direction in which the battery pack is mounted to the housing, and where the direction in which the operating member is coupled to the housing is also perpendicular to the first linear direction in which the housing extends.

In the present embodiment, the direction of the first straight line 202 extending from the housing 21 and the first axis 201 of rotation of the output member 23 are parallel to each other. A circuit board assembly 26 is disposed between the motor 22 and the battery pack 24. The circuit board assembly 26 is disposed within the housing 21 in a first linear direction 202, and a motor shaft 221 of the motor 22 rotates about a first axis 201. The output member 23, the motor 22, the circuit board assembly 26, the operating member 400, and the battery pack 24 are sequentially arranged in a direction along the first straight line 202, so that the overall electric power tool 200 has a slim structure, thereby facilitating the user's grip.

The motor 22 is a brushless motor 22, and the no-load rotation speed of the motor 22 is greater than or equal to 15000r/min and less than or equal to 35000r/min, and further, the no-load rotation speed of the motor 22 is greater than or equal to 25000r/min and less than or equal to 32000r/min, so that the output rotation speed of the electric tool 200 can be high, and the workpiece can be cut or the hole can be drilled on the wall surface quickly and efficiently.

The circuit board assembly 26 includes a first circuit board 261 and a second circuit board 262, each of the first circuit board 261 and the second circuit board 262 being disposed between the motor 22 and the mounting portion 213. The first circuit board 261 extends in a first plane parallel to the first straight line 202, and the second circuit board 262 extends in a second plane parallel to the first straight line 202, that is, the first circuit board 261 and the second circuit board 262 are disposed in parallel with each other in the accommodation chamber 211 a. The projection of the second circuit board 262 in the first plane and the projection of the second circuit board 262 in the first plane are parallel to each other. Since the mount portion 213 is provided between the grip portion 211 and the coupling portion 212, the motor 22 and the circuit board assembly 26 need to be provided in the housing cavity 211a, and the size of the motor 22 is substantially standardized, so that as long as the size of the circuit board assembly 26 in the direction along the first line 202 is reduced, the size of the grip portion 211 in the direction along the first line 202 can be reduced, and thus the size of the power tool 200 in the direction along the first axis 201 is reduced. In the present embodiment, the projections of the first circuit board 261 and the second circuit board 262 in the first plane are partially overlapped, so that the dimension of the circuit board assembly 26 in the direction of the first straight line 202 is greatly reduced, and the dimension of the electric power tool 200 in the direction along the first straight line 202 can be reduced. Therefore, even if the mounting portion 213 for mounting the operating element 400 is provided in the housing 21, the length of the electric power tool 200 is not increased, but the length of the electric power tool 200 is decreased, and the overall structural layout of the electric power tool 200 is more reasonable. In the present embodiment, the motor 22 is a brushless motor 22, the first circuit board 261 may be a control circuit board for controlling the operation of the motor 22, and the second circuit board 262 is a power circuit board for controlling the output power of the motor 22.

The coupling portion 212 is formed with a guide structure 212a, and the guide structure 212a guides the battery pack 24 to be mounted to the coupling portion 212 in the direction of the third line 204. The direction in which the battery pack 24 is mounted to the coupling portion 212 and the direction in which the operating member 400 is inserted into the mounting groove 213a are parallel to each other and opposite. That is, the battery pack 24 is coupled to the coupling portion 212 from the right to the left along the third straight line 204, and the operating member 400 is inserted into the mounting groove 213a from the left to the right along the second straight line 203. Thus, the user does not interfere with the insertion of the battery pack 24 by the operating member 400, and the user does not interfere with the insertion of the operating member 400 by the battery pack 24. The direction of the second line 203 is also perpendicular to the direction of the first line 202, which enables the length of the power tool 200 in the direction along the first line 202 to be shortened even less.

As shown in fig. 4 and 8, the housing 21 includes: a first housing part 214 and a second housing part 215, the first housing part 214 and the second housing part 215 may be separated, and the first housing part 214 and the second housing part 215 are coupled together by screws. The first housing part 214 is butted to the second housing part 215 along a fourth line 205 perpendicular to the first line 202, forming a grip 211 and a joint 212 when the first housing part 214 is joined to the second housing part 215. In this embodiment, the first housing portion 214 and the second housing portion 215 are substantially symmetrical about a third plane parallel to the first line 202. It will be appreciated that when the ribs formed on the first housing part 214 for interfacing with the second housing part 215 do not form the same corresponding structure on the second housing part 215 as the ribs, the first housing part 214 and the second housing part 215 may also be considered to be substantially symmetrical about the third plane.

The coupling portion 212 is further provided with an access terminal 212b for making an electrical connection with the battery pack 24 to transmit the electric power output from the battery pack 24 to the motor 22. The power tool 200 also includes electrical wires 27 for electrically connecting the access terminals 212b and the circuit board assembly 26. The electric wire 27 needs to extend from the joint portion 212 to the grip portion 211, so that the electric wire 27 passes through the area between the joint portion 212 and the grip portion 211. The housing 21 further has a limiting portion 216 formed thereon for limiting the electric wire 27 to pass through the mounting groove 213a, so that the limiting portion 216 limits the electric wire 27 to avoid the electric wire 27 from the mounting groove 213a, so that the electric wire 27 does not interfere with the insertion of the operating element 400 into the mounting groove 213a, and the operating element 400 does not contact the electric wire 27 when inserted into the mounting groove 213a, thereby protecting the electric wire 27.

The housing 21 is further provided with a partition 217, and the partition 217 serves to space the mounting groove 213a and the incoming terminal 212b such that the mounting groove 213a does not affect the stability of the incoming terminal 212 b. The electric wire 27 also needs to pass through the partition 217 to connect the incoming terminal 212b and the circuit board assembly 26, so that a through hole 217a through which the electric wire 27 passes is also formed on the partition 217, and the through hole 217a is located outside the mounting groove 213 a. The through hole 217a and the mounting groove 213a are respectively located at both sides of the stopper portion 216, and the stopper portion 216 is formed on the partition 217. The spacer 216 divides the partition 217 into two regions, one of which is used to form the mounting groove 213a and the other of which passes through the power supply line 27, so that part of the groove wall of the mounting groove 213a is also formed by the partition 217. The regions on both sides of the stopper portion 216 are used for forming the mounting groove 213a and for passing the power supply line 27, respectively, thereby enabling protection of the power line 27 without increasing the size of the power tool 200.

As shown in fig. 8 and 9, the mounting groove 213a has a notch 213b, and the notch 213b allows the operation member 400 to be inserted into the mounting groove 213 a. A stopper 241 is formed on the battery pack 24, the stopper 241 is used for limiting the position of the battery pack 24 when being combined to the chassis 21, and the stopper 241 protrudes upwards. The notch 213b and the stopper 241 are respectively located at both sides of the combining part 212 so that the stopper 241 does not block the notch 213b, and thus, the user can easily insert and remove the operating member 400 even when the battery pack 24 is mounted to the set cover 21.

The dimension of the mounting groove 213a in the direction along the fourth straight line 205 is L. The mounting groove 213a is positioned at the first housing part 214 in a size of 0.7L in the direction along the fourth line 205, such that a large area of the mounting groove 213a is provided at the first housing part 214, thereby facilitating the arrangement of the electric wires 27. Further, most of the area of the notch 213b is also provided in the first housing part 214, as described above, the first housing part 214 and the second housing part 215 are symmetrical about the third plane, and the area of the area where the mounting groove 213a is provided on the first side of the third plane is larger than the area of the area where the mounting groove 213a is provided on the second side of the third plane. That is, the mounting grooves 213a are asymmetrically formed on both sides of the third plane, and in practice, most of the mounting grooves 213a are formed on one side of the third plane.

As shown in fig. 10 to 12, the mounting groove 213a has a groove bottom 213c, and the groove bottom 213c is disposed opposite to the notch 213 b. A limiting member 28 is further disposed in the mounting groove 213a, and the limiting member 28 is an elastic member. When the operating element 400 is inserted into the mounting groove 213a along the first straight line 202, the limiting member 28 limits the operating element 400 to prevent the limiting member 28 from deviating from the first direction, and also prevents the operating element 400 from being separated from the mounting groove 213a when the operating element 400 is not acted by the user. The stopper 28 has a contact portion 281 formed thereon, the contact portion 281 being adapted to contact the operation member 400, the contact portion 281 restricting the operation member 400 from being separated from the mounting groove 213a when the operation member 400 receives a force smaller than a preset value. Wherein, the ratio of the distance L2 from the contact part 281 to the notch 213b to the distance L3 from the contact part 281 to the groove bottom 213c is 1.5 or more and 5 or less. Further, the ratio of the distance L2 from the contact portion 281 to the notch 213b to the distance L3 from the contact portion 281 to the groove bottom 213c is 2 or more and 3.5 or less. Thus, when the operating element 400 is inserted into the mounting groove 213a from the notch 213b, the operating element 400 contacts the contact portion 281 when a large portion of the operating element 400 enters the mounting groove 213a, so that the user can insert the operating element 400 into the mounting groove 213a with less effort. When the user detaches the operating element 400, the operating element 400 is not acted by the stopper 28 any more as long as the operating element 400 is pulled out a little by the user, so that the user can detach the operating element 400 with less effort.

The operating member 400 includes an operating portion 41 for the user to operate, and a driving portion 42 for driving the locking member 251 to switch between the locked state and the released state. In the present embodiment, the driving portion 42 is formed with a driving structure 421 for cooperating with the locking member 251, the driving structure 421 is disposed symmetrically with respect to a straight line, and the operating portion 41 is asymmetric with respect to the straight line. Thus, the operation member 400 can be fitted to the structure of the mounting groove 213a, and most of the operation member 400 is disposed on the first housing part 214 when the operation member 400 is inserted into the mounting groove 213 a.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.