CN-122008132-A - Electric tool

Abstract

The invention provides an electric tool which comprises a first shell, a motor, a second shell and at least one elastic piece, wherein the first shell is provided with a connecting part, the motor is contained in the first shell, the second shell comprises a first part and a second part connected with the first part, the connecting part stretches into the space between the first part and the second part and forms a first gap which can enable the second shell to move, the first gap surrounds the outer peripheral surface of the connecting part, the battery pack is connected with the second shell, the elastic piece is connected between the connecting part and the second shell, the elastic piece is arranged in a part of a circumferential area along the circumferential direction of the connecting part, so that a filling area and a non-filling area are formed in the gap in the circumferential direction, the filling area can absorb vibration from the first shell, and the non-filling area keeps free moving space of the second shell.

Inventors

• HUANG JIN
• WANG GUOHUI

Assignees

• 格力博(江苏)股份有限公司

Dates

Publication Date

20260512

Application Date

20260305

Claims (20)

1. 1. A power tool, comprising: a first housing having a connection portion; the motor is accommodated in the first shell; The second shell comprises a first part and a second part connected with the first part, the connecting part stretches into the space between the first part and the second part and is spaced from the inner surface of the second shell to form a first gap for the second shell to move, and the first gap surrounds the outer peripheral surface of the connecting part; The battery pack is connected with the second shell; And the elastic piece is connected between the connecting part and the second shell, and is arranged in a part of circumferential area along the circumferential direction of the connecting part, so that the gap forms a filling area and a non-filling area in the circumferential direction.
2. 2. The power tool according to claim 1, wherein the filling region includes at least a first region and a second region, the first region being disposed on a left side of the connection portion, and the second region being disposed on a right side of the connection portion, with a left-right direction of a user holding the power tool being a left-right direction of the power tool.
3. 3. The power tool of claim 2, wherein there are two elastic members, one of the two elastic members being disposed in the first region and the other being disposed in the second region.
4. 4. The power tool according to claim 2, wherein the number of the elastic members is two, one of the two elastic members is provided between the first portion and the connecting portion, and the other is provided between the second portion and the connecting portion.
5. 5. The power tool according to claim 1, wherein one of the connection portion and the second housing has a boss thereon, the other has a receiving groove thereon, the elastic member is mounted to the boss, and at least a portion of the elastic member is received in the receiving groove.
6. 6. The power tool of claim 5, wherein the power tool comprises, The connecting part is provided with a first connecting surface, and the convex column is arranged on the first connecting surface; the inner surface of the second shell is provided with a second connecting surface, and the accommodating groove is formed in the second connecting surface; At least a portion of the elastic member is located between the first connection surface and the second connection surface.
7. 7. The power tool according to claim 6, wherein the connecting portion includes a main body and a mounting bracket having a mechanical strength greater than that of the main body, the mounting bracket includes a mounting portion connected to the main body and a boss connected to the mounting portion and protruding from the first connecting surface toward the second housing.
8. 8. The power tool of claim 7, wherein a projected area of the mounting portion on the first connection surface is larger than a projected area of the boss on the first connection surface.
9. 9. The power tool of claim 7, wherein the mounting bracket is integrally formed on the body.
10. 10. The power tool of claim 7, wherein the mounting bracket is a metal piece and the body is a plastic piece.
11. 11. The power tool of claim 6, wherein the resilient member comprises: a seat portion located between the first connection face and the second connection face; the plug-in part is connected to one side, far away from the first connecting surface, of the seat part, and the plug-in part is accommodated in the accommodating groove.
12. 12. The power tool according to claim 11, wherein the elastic member includes a plurality of the insertion portions, the plurality of insertion portions being provided at intervals along an axial direction of the motor in the seat portion.
13. 13. The power tool according to claim 6, wherein the connecting portion has two first surfaces and two first connecting surfaces, the two first surfaces being spaced apart in a front-rear direction of the power tool, the two first connecting surfaces being spaced apart in a left-right direction of the power tool; The inner surface of the second shell is provided with two second surfaces and two second connecting surfaces, the two second surfaces are arranged at intervals along the front-back direction of the electric tool, and the two second connecting surfaces are arranged at intervals along the left-right direction of the electric tool; the non-filling area is arranged between the first surface and the second surface, and the filling area is arranged between the first connecting surface and the second connecting surface.
14. 14. The power tool of claim 1, further comprising a terminal block connected between the first portion and the second portion and spaced from the first housing, the first portion and the second portion each having a rail along which the battery pack is slidable, and the terminals on the battery pack being detachably connected to the terminal block.
15. 15. The power tool of claim 1, wherein the first housing comprises a main housing and a handle, the main housing being provided at a first end of the handle, the connection being provided at a second end of the handle, the motor being housed within the main housing.
16. 16. The electric power tool according to claim 15, wherein a base is provided at a second end of the handle, a left-right direction of a user holding the electric power tool is a left-right direction of the electric power tool, a direction of insertion and removal of the battery pack is a front-rear direction, a maximum dimension of the base in the front-rear direction is larger than a maximum dimension of the handle in the front-rear direction, a maximum dimension of the base in the left-right direction is larger than a maximum dimension of the handle in the left-right direction, and the connecting portion is provided on a side of the base away from the handle.
17. 17. The power tool of claim 16, wherein a bottom surface of the base is spaced from a top surface of the second housing to form a second gap for movement of the second housing, the second gap being annular and the second gap being in communication with the first gap.
18. 18. The power tool of claim 16, wherein the seat portion houses a first circuit board therein.
19. 19. The power tool of claim 15, wherein the handle houses a second circuit board therein.
20. 20. The power tool according to claim 1, wherein the first portion and the second portion are provided with a bolt mounting portion protruding from an outer surface thereof, and the second housing further includes a bolt that fixedly connects the first portion and the second portion through the bolt mounting portion.

Description

Electric tool Technical Field The invention relates to the technical field of tools, in particular to an electric tool. Background The hand-held electric tool uses the motor as the power source, the high-speed rotation of the motor output shaft is converted into the portable mechanical device with low speed and high torque of the working head by the transmission mechanism such as the planetary gear reduction box, such as an electric drill, an electric circular saw, an electric wrench and the like, in order to ensure the use flexibility and portability of the electric tool, a battery pack detachably connected to the hand-held electric tool is generally adopted to supply power for the motor, the shell of the electric tool generally comprises a main shell and a battery pack shell which are mutually connected, the motor and the working head are assembled in the main shell, and the battery pack is detachably connected in the battery pack shell, so that severe relative vibration exists between the main shell and the battery pack shell due to the large interaction force between the working head and a workpiece during working. In the existing hand-held electric tool, a part of manufacturers adopt a rigid connection mode to connect the main shell and the battery pack shell together, and the connection mode can lead to almost no decrease in energy of vibration to be transmitted from the main shell to the battery pack shell, so that the battery pack shell is caused to vibrate more severely, and the structural stability and the electrical connection reliability of a battery pack arranged on the battery pack shell are seriously affected. In order to reduce the vibration energy transferred from the main shell to the battery pack shell, another part of manufacturers can directly fill a buffer structure of a rubber pad at the joint between the main shell and the battery pack shell, and the connecting mode can have a certain vibration reduction effect, but on one hand, the joint is easy to have strength problems, after the electric tool works for a period of time, the joint is severely worn or even broken, and on the other hand, the risk that the battery pack falls off due to vibration is still higher. Disclosure of Invention The invention provides an electric tool, which solves the technical problem that the structural stability and the electrical connection reliability of a battery pack cannot be ensured due to severe relative vibration between a shell and the battery pack during operation. The invention provides an electric tool which comprises a first shell, a motor, a second shell and at least one elastic piece, wherein the first shell is provided with a connecting part, the motor is accommodated in the first shell, the second shell comprises a first part and a second part connected with the first part, the connecting part stretches into the space between the first part and the second part and is spaced from the inner surface of the second shell to form a first gap which can be used for the second shell to move, the first gap surrounds the outer peripheral surface of the connecting part, the battery pack is connected with the second shell, the elastic piece is connected between the connecting part and the second shell, and the elastic piece is arranged in a part of circumferential area along the circumferential direction of the connecting part so that a filling area and a non-filling area are formed in the circumferential direction of the gap. In an embodiment of the present invention, the filling area includes at least a first area and a second area, the left-right direction of the electric tool is taken as the left-right direction of the electric tool when the user holds the electric tool, the first area is disposed at the left side of the connection portion, and the second area is disposed at the right side of the connection portion. In an embodiment of the present invention, the number of the elastic members is two, one of the two elastic members is disposed in the first area, and the other elastic member is disposed in the second area. In an embodiment of the invention, the number of the elastic members is two, one of the two elastic members is disposed between the first portion and the connecting portion, and the other elastic member is disposed between the second portion and the connecting portion. In an embodiment of the present invention, one of the connection portion and the second housing has a protrusion, the other has a receiving groove, the elastic member is mounted on the protrusion, and at least a portion of the elastic member is received in the receiving groove. In an embodiment of the invention, the connecting portion has a first connecting surface, the first connecting surface is provided with the convex column, the inner surface of the second housing has a second connecting surface, the second connecting surface is provided with the accommodating groove, and at least a part of the elastic member is