Electric tool with replaceable tool head

Abstract

The utility model belongs to the technical field of electric tools, in particular to an electric tool with a replaceable tool head, which comprises an electric tool main body and a tool head group arranged at the front end of the electric tool main body, a driving component is arranged in the electric tool main body, and a transmission component connected with the driving component is arranged in the tool head group. An inserting part is arranged at the rear end of the tool head set, an inserting hole is formed in the front end of the electric tool body, the tool head set can stretch into the inserting hole through the inserting part to be connected with the electric tool body, at least one abutting table is arranged on the inserting part in a protruding mode, and at least one limiting lock is arranged on the electric tool body. The limiting lock is arranged on the side wall of the electric tool body and can rotate along the side wall of the electric tool body, a limiting gasket is arranged in the electric tool body, a plurality of limiting tables are arranged at the inner end of the limiting gasket in an inward protruding mode, and an inlet and outlet allowing the abutting tables to stretch into is formed between every two adjacent limiting tables. The tool head can be replaced so as to meet different working requirements; and the electric tool can be used by workers.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric tools, in particular to an electric tool with a replaceable tool head. Background Art

[0002] A power tool is a mechanized tool that is powered by a drive motor and drives a working head through a transmission mechanism to perform operations. It is usually made into a handheld type for workers to hold and use. There are many types of power tools, such as electric scissors, electric drills, impact drills, etc. The difference between different power tools is that the working heads in front are different and the matching functions are also different. At present, workers need to constantly switch different power tools to use for different work needs when working, and they have to carry each power tool together when carrying it. And each power tool carried must be fully charged before going out every time, resulting in the workers' backpacks being very full when carrying it, and it is very tiring to carry it on their backs. Moreover, if one of the power tools is not charged before going out and cannot be used, the work cannot be carried out. Therefore, a power tool with a replaceable tool head is needed to meet different work needs and can be used by workers. Summary of the Invention

[0003] The purpose of the utility model is to provide an electric tool with a simple structure and replaceable tool heads to meet different work requirements and can be used by workers.

[0004] The purpose of this utility model is achieved in this way:

[0005] A power tool with a replaceable tool head comprises a power tool body and a tool head group arranged at the front end of the power tool body, a drive assembly is provided in the power tool body, and a transmission assembly that can be connected to the drive assembly is provided in the tool head group, characterized in that the rear end of the tool head group is provided with a plug-in portion, the front end of the power tool body is provided with a plug-in hole, the tool head group can be inserted into the plug-in hole through the plug-in portion and connected to the power tool body, at least one abutment platform is convexly provided on the plug-in portion, the abutment platform is provided at the end of the plug-in portion, at least one limit lock is provided on the power tool body, the limit lock is provided on the side wall of the power tool body and can rotate along the side wall of the power tool body, a limit gasket is provided in the power tool body, the outer end of the limit gasket is connected to the limit lock and can rotate with the limit lock, The inner end of the limit gasket is provided with a plurality of limit platforms protruding inward, and an inlet and outlet for the abutment platform to extend into are formed between adjacent limit platforms. Driving the limit lock to rotate along the side wall of the power tool body to drive the limit gasket to rotate can make the limit platform abut against the inner end of the abutment platform and limit the movement of the tool head group. At this time, it enters a locked state. Driving the limit lock to rotate in the opposite direction along the side wall of the power tool body can drive the limit platform on the limit gasket to disengage from the inner end of the abutment platform. At this time, the abutment platform can exit from the inlet and outlet and enter a separated state. The tool head group is detached from the connection with the power tool body so that it can be replaced. A plurality of guide grooves are also provided in the power tool body, and a guide seat adapted to the guide groove is provided on the head group. When the tool head group is connected to the power tool body, the guide seat extends into the guide groove.

[0006] Furthermore, there are two limit locks, each of which is arranged on both sides of the power tool body. The limit lock includes a vertically arranged lock body and a lock button. The lock button is fixed on the lock body and exposed outside the power tool body. Driving the lock button can synchronously drive the limit gasket to rotate through the lock body.

[0007] Furthermore, a connecting block is convexly provided on the outer end of the limiting gasket, and a connecting groove is concavely provided on the inner end of the lock body. The connecting groove is adapted to the connecting block, and the limiting gasket is inserted into the connecting groove on the lock body through the connecting block and rotates synchronously with the lock body.

[0008] Furthermore, a sliding groove is provided on the power tool body, and the locking button can rotate in an arc direction relative to the power tool body in the sliding groove. The sliding groove is also provided with an upper abutment portion and a lower abutment portion. Rotating the locking button upward can abut against the upper abutment portion and release the locked state, and rotating the locking button downward can abut against the lower abutment portion and enter the locked state.

[0009] Furthermore, an upper observation portion and a lower observation portion are protruding from both ends of the lock body. When the sliding lock button drives the limiting gasket to rotate into the locked state, the lower observation portion rotates in an arc direction with the lock body into the main body of the power tool. At this time, the upper observation portion is exposed in the sliding groove. When the sliding lock button drives the limiting gasket to rotate in the opposite direction into the separation state, the lower observation portion rotates in an arc direction with the lock body and is exposed in the sliding groove. At this time, the upper observation portion rotates into the main body of the power tool.

[0010] Furthermore, the ends of the upper observation part and the lower observation part are respectively provided with an upper protrusion and a lower protrusion, and the upper boss part and the lower boss part are provided in the main body of the electric tool. When the locking button abuts against the upper abutment part, the upper protrusion is restricted by the upper boss part, and when the locking button abuts against the lower abutment part, the lower protrusion is restricted by the lower boss part.

[0011] Furthermore, a plurality of guide grooves are provided in the power tool body, and a guide seat adapted to the guide grooves is provided on the head group. When the tool head group is connected to the power tool body, the guide seat extends into the guide grooves.

[0012] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects:

[0013] The utility model is a power tool with replaceable tool heads, which is convenient for users to save space in their backpacks when working outdoors, and can quickly replace tool head groups with different functions. There is no need to fully charge each tool. A battery pack and a power tool body can be equipped with a variety of tool head groups to complete different types of work. The plug-in part on the tool head group of the utility model is integrally formed with the tool head group, and there is no need to tighten the plug-in part and the tool head group with screws after each switching. Compared with the screw tightening method, the utility model will not have problems such as gaps, and the connection is tighter. When it is necessary to switch to other tool head groups, it is only necessary to manually slide the limit lock, and the limit lock rotates upward along the arc of the side wall of the power tool body, and the limit platform and the abutment platform are disengaged to release the limit. After the force is applied, the tool head group is pulled out, and the transmission component in the tool head group is disconnected from the drive component, and the worker can replace it. The tool head group is inserted into the socket through the plug-in part, and the abutment table enters along the inlet and outlet. At this time, the transmission component in the tool head group is connected with the drive component in the power tool body. After the worker turns the limit lock to drive the limit gasket to rotate, the limit table rotates to contact with the inner end of the abutment table. At this time, the tool head group cannot be pulled out relative to the power tool body and is in a locked state. The mutual abutment between the two prevents the tool head group from being separated from the power tool body, which is safer and convenient for users to carry only a few types of tool head groups they need to replace when going out. The guide seat plays a guiding role, which is convenient for alignment and prevents the tool head group from rotating relative to the power tool body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the present utility model.

[0015] Figure 2 This is one of the schematic diagrams of the separation of the tool head assembly and the power tool body of the utility model.

[0016] Figure 3 This is the second schematic diagram of the separation of the tool head assembly and the power tool body of the utility model.

[0017] Figure 4 It is a three-dimensional diagram of the limit lock of the utility model.

[0018] Figure 5 It is a schematic diagram of the connection between the limit lock and the limit gasket of the utility model.

[0019] Figure 6 It is a schematic diagram showing that the limit locks of the utility model are installed on both sides of the limit gasket.

[0020] Figure 7 It is a schematic diagram of the utility model when the limiting platform and the abutting platform abut.

[0021] Figure 8 It is a schematic diagram of the utility model after the limiting platform is separated from the abutting platform.

[0022] Figure 9 It is a partial schematic diagram of the interior of the main body of the electric tool of the present utility model.

[0023] The meaning of the numbers in the figure:

[0024] 1-power tool body; 2-tool head assembly; 3-connection portion; 4-connection hole; 5-abutment platform;

[0025] 6-Limit lock; 7-Limit gasket; 8-Limit platform; 9-Inlet and outlet; 10-Lock body; 11-Lock button; 12-Connecting block; 13-Connecting slot; 14-Sliding slot; 15-Upper abutment portion; 16-Lower abutment portion; 17-Upper observation portion;

[0026] 18-lower observation portion; 19-upper raised portion; 20-lower raised portion; 21-upper boss portion; 22-lower boss portion; 23-guide groove; 24-guide seat. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with specific embodiments:

[0028] 1. The electric tool of claim 1 , wherein the tool head group 2 is provided with a plurality of connecting rods and a plurality of connecting rods, and the connecting rods are connected to the electric tool body 1 by a plurality of connecting rods. The electric tool body 1 is provided with a plurality of connecting rods and a plurality of connecting rods. The electric tool body 1 is provided with a plurality of connecting rods and a plurality of connecting rods. The electric tool body 1 is provided with a plurality of connecting rods and a plurality of connecting rods. The inner end of the plate 7 is provided with a plurality of limit platforms 8 protruding inward, and an inlet and outlet 9 for the abutment platform 5 to extend into is formed between adjacent limit platforms 8. Driving the limit lock 6 to rotate along the side wall of the power tool body 1 drives the limit gasket 7 to rotate so that the limit platform 8 can abut against the inner end of the abutment platform 5 and limit the movement of the tool head group 2. At this time, it enters a locked state. Driving the limit lock 6 to rotate in the opposite direction along the side wall of the power tool body 1 can drive the limit platform 8 on the limit gasket 7 to disengage from the inner end of the abutment platform 5. At this time, the abutment platform 5 can exit from the inlet and outlet 9 and enter a separated state. The tool head group 2 is disconnected from the power tool body 1 so that it can be replaced. A plurality of guide grooves 23 are also provided in the power tool body 1, and a guide seat 24 adapted to the guide groove 23 is provided on the head group. When the tool head group 2 is connected to the power tool body 1, the guide seat 24 extends into the guide groove 23.

[0029] The present invention is an electric tool with replaceable tool heads, which is convenient for users to save space in their backpacks when working outdoors, and allows quick replacement of tool head groups 2 with different functions. There is no need to fully charge each tool. A battery pack and an electric tool body 1 can be used to adapt to a variety of tool head groups 2, thereby completing different types of work. The plug-in portion 3 on the tool head group 2 of the present invention is integrally formed with the tool head group 2, and there is no need to tighten the plug-in portion 3 and the tool head group 2 with screws after each switching. Compared with the screw tightening method, the present invention does not have problems such as gaps, and the connection is tighter. When it is necessary to switch to other tool head groups 2, it is only necessary to manually slide the limit lock 6, and the limit lock 6 rotates upward in an arc along the side wall of the electric tool body 1. After the limit platform 8 is disengaged from the abutment platform 5 and the restricted force is released , pull out the tool head group 2, the transmission component in the tool head group 2 is disconnected from the drive component, and the worker can replace it, and insert the tool head group 2 into the plug hole 4 through the plug-in part 3, and the abutment platform 5 enters along the inlet and outlet 9. At this time, the transmission component in the tool head group 2 is connected with the drive component in the power tool body 1. After the worker turns the limit lock 6 to drive the limit gasket 7 to rotate, the limit platform 8 rotates to contact the inner end of the abutment platform 5. At this time, the tool head group 2 cannot be pulled out relative to the power tool body 1 and is in a locked state. The mutual abutment between the two prevents the tool head group 2 from being separated from the power tool body 1, which is safer and convenient for users to carry only a few types of tool head groups 2 they need to replace when going out. The guide seat 24 plays a guiding role, which is convenient for alignment and prevents the tool head group 2 from rotating relative to the power tool body 1.

[0030] Preferably, there are two limit locks 6, which are respectively arranged on both sides of the power tool body 1. The limit lock 6 includes a vertically arranged lock body 10 and a lock button 11. The lock button 11 is fixed on the lock body 10 and exposed outside the power tool body 1. Driving the lock button 11 can synchronously drive the limit gasket 7 to rotate through the lock body 10. After the worker manually operates the limit lock 6 on one side to drive the limit gasket 7 in the power tool body 1 to rotate downward, the limit lock 6 on the other side rotates upward with the limit gasket 7. Compared with the design of only having a limit lock 6 on one side, it is more convenient for different workers to operate with their left and right hands. The vertically arranged lock body 10 is designed to avoid the worker's other hand operation, and it can be turned with the thumb of one hand.

[0031] Preferably, a connecting block 12 is convexly provided on the outer end of the limiting gasket 7, and a connecting groove 13 is concavely provided on the inner end of the lock body 10. The connecting groove 13 is adapted to the connecting block 12. The limiting gasket 7 is inserted into the connecting groove 13 on the lock body 10 through the connecting block 12 and rotates synchronously with the lock body 10. Compared with a fixed design, the present utility model can separate the limiting gasket 7 from the lock body 10, making it convenient for users to replace the limiting gasket 7 and avoid wear or damage caused by long-term use.

[0032] Preferably, a sliding groove 14 is provided on the power tool body 1, and the locking button 11 can be rotated in an arc direction relative to the power tool body 1 in the sliding groove 14. The sliding groove 14 is also provided with an upper abutment 15 and a lower abutment 16. The locking button 11 is rotated upward to abut against the upper abutment 15 and release the locked state, and the locking button 11 is rotated downward to abut against the lower abutment 16 and enter the locked state. The sliding groove 14 facilitates the limit lock 6 to slide along the arc of the power tool body 1. When the limit lock 6 abuts against the upper abutment 15, the tool head group 2 and the power tool body 1 can be separated from each other to replace the tool head group 2. When the limit lock 6 abuts against the lower abutment 16, the tool head group 2 and the power tool body 1 are locked and cannot be replaced, which is convenient for clearly reminding the user what state the tool head group and the power tool body 1 are in to prevent workers from turning on the power and working in a confused manner.

[0033] Preferably, an upper observation portion 17 and a lower observation portion 18 are protruding from both ends of the lock body 10. When the sliding lock button 11 drives the limiting gasket 7 to rotate into the locked state, the lower observation portion 18 rotates in an arc direction with the lock body 10 into the power tool body 1. At this time, the upper observation portion 17 is exposed in the sliding groove 14. When the sliding lock button 11 drives the limiting gasket 7 to rotate in the opposite direction and enter the separated state, the lower observation portion 18 rotates in an arc direction with the lock body 10 and is exposed in the sliding groove 14. At this time, the upper observation portion 17 rotates into the power tool body 1, which is convenient for the user to directly observe. Patterns and text prompts are provided on the upper observation portion 17 and the lower observation portion 18. The user can directly judge what state the power tool body 1 is in after observation.

[0034] Preferably, the ends of the upper observation portion 17 and the lower observation portion 18 are respectively provided with an upper protrusion 19 and a lower protrusion 20, and the power tool body 1 is provided with an upper boss portion 21 and a lower boss portion 22. When the locking button 11 abuts against the upper abutment portion 15, the upper protrusion 19 is restricted by the upper boss portion 21, and when the locking button 11 abuts against the lower abutment portion 16, the lower protrusion 20 is restricted by the lower boss portion 22, thereby preventing the tool head group 2 from being disconnected from the power tool body 1 in the working state and preventing the limit platform 8 from being separated from the abutment platform 5. The tool is safer and more stable. When the worker needs to slide, he only needs to overcome the abutment force between the upper protrusion 19 and the lower protrusion 20 and the upper boss portion 21 and the lower boss portion 22.

[0035] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. An electric tool with a replaceable tool head, comprising an electric tool body (1) and a tool head assembly (2) arranged at the front end of the electric tool body (1), wherein the electric tool body (1) is provided with a drive assembly, and the tool head assembly (2) is provided with a transmission assembly connectable to the drive assembly, characterized in that: The rear end of the tool head group (2) is provided with a plug-in portion (3), and the front end of the electric tool body (1) is provided with a plug-in hole (4). The tool head group (2) can be inserted into the plug-in hole (4) through the plug-in portion (3) to be connected to the electric tool body (1). At least one abutment platform (5) is protruding from the plug-in portion (3), and the abutment platform (5) is provided at the end of the plug-in portion (3). The electric tool body (1) is provided with at least one limit lock (6), and the limit lock (6) is provided on the side wall of the electric tool body (1) and can rotate along the side wall of the electric tool body (1). A limit gasket (7) is provided in the electric tool body (1), and the outer end of the limit gasket (7) is connected to the limit lock (6) and can rotate with the limit lock (6). The inner end of the limit gasket (7) is provided with a plurality of limit platforms (8) protruding inwardly, and an inlet and outlet (10) for the abutment platform (5) to extend into is formed between adjacent limit platforms (8). 9), driving the limit lock (6) to rotate along the side wall of the power tool body (1) to drive the limit gasket (7) to rotate so that the limit platform (8) abuts against the inner end of the abutment platform (5) and limits the movement of the tool head group (2), at which time it enters a locked state, driving the limit lock (6) to rotate in the opposite direction along the side wall of the power tool body (1) to drive the limit platform (8) on the limit gasket (7) to separate from the inner end of the abutment platform (5), at which time the abutment platform (5) can be withdrawn from the inlet and outlet (9) to enter a separated state, and the tool head group (2) is separated from the connection with the power tool body (1) so that it can be replaced, and a plurality of guide grooves (23) are also provided in the power tool body (1), and a guide seat (24) adapted to the guide groove (23) is provided on the head group, and when the tool head group (2) is connected to the power tool body (1), the guide seat (24) extends into the guide groove (23).

2. The electric tool with a replaceable tool head according to claim 1, characterized in that: There are two limit locks (6) respectively arranged on both sides of the power tool body (1). The limit lock (6) comprises a vertically arranged lock body (10) and a lock button (11). The lock button (11) is fixed on the lock body (10) and exposed outside the power tool body (1). Driving the lock button (11) can synchronously drive the limit gasket (7) to rotate through the lock body (10).

3. The electric tool with a replaceable tool head according to claim 2, wherein: The outer end of the limiting gasket (7) is convexly provided with a connecting block (12), and the inner end of the lock body (10) is concavely provided with a connecting groove (13), and the connecting groove (13) is adapted to the connecting block (12). The limiting gasket (7) is inserted into the connecting groove (13) on the lock body (10) through the connecting block (12) and rotates synchronously with the lock body (10).

4. The electric tool with a replaceable tool head according to claim 2, wherein: The electric tool body (1) is provided with a sliding groove (14), and the locking button (11) can rotate in an arc direction relative to the electric tool body (1) in the sliding groove (14). The sliding groove (14) is also provided with an upper abutting portion (15) and a lower abutting portion (16). When the locking button (11) is rotated upward, it can abut against the upper abutting portion (15) and release the locking state. When the locking button (11) is rotated downward, it can abut against the lower abutting portion (16) and enter the locking state.

5. The electric tool with a replaceable tool head according to claim 4, characterized in that: The lock body (10) is also provided with an upper observation portion (17) and a lower observation portion (18) at both ends. When the sliding lock button (11) drives the limiting gasket (7) to rotate and enter the locked state, the lower observation portion (18) rotates along the lock body (10) in an arc direction into the power tool body (1). At this time, the upper observation portion (17) is exposed in the sliding groove (14). When the sliding lock button (11) drives the limiting gasket (7) to rotate in the opposite direction and enter the separation state, the lower observation portion (18) rotates along the lock body (10) in an arc direction and is exposed in the sliding groove (14). At this time, the upper observation portion (17) rotates into the power tool body (1).

6. The electric tool with a replaceable tool head according to claim 5, characterized in that: The ends of the upper observation portion (17) and the lower observation portion (18) are respectively provided with an upper protrusion (19) and a lower protrusion (20); an upper boss portion (21) and a lower boss portion (22) are provided in the electric tool body (1); when the locking button (11) abuts against the upper abutment portion (15), the upper protrusion (19) is restricted by the upper boss portion (21); when the locking button (11) abuts against the lower abutment portion (16), the lower protrusion (20) is restricted by the lower boss portion (22).

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