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, a transmission component connected with the driving component is arranged in the tool head group, and an inserting part is arranged at the rear end of the tool head group. The front end of the electric tool main body is provided with a connecting part, the tool head group can be connected with the connecting part on the electric tool main body through an inserting part, the inserting part is provided with at least one inserting groove, the inserting grooves are formed in the side wall of the inserting part, and the electric tool main body is provided with inserting locks with the same number as the inserting grooves; the inserting 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 spring bolt is arranged at the inner end of the inserting lock in a protruding mode, the spring bolt is arranged in the electric tool body and located on one side of the inserting groove, and the electric tool is simple in structure, capable of replacing the tool head so as to meet different working requirements and capable of being used by workers.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric tools, in particular to an electric tool for replacing a 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 for replacing a tool head, comprising a power tool body and a tool head group arranged at the front end of the power tool body, a drive assembly being arranged in the power tool body, a transmission assembly being arranged in the tool head group and being connectable to the drive assembly, a plug-in portion being arranged at the rear end of the tool head group, a connecting portion being arranged at the front end of the power tool body, the tool head group being connectable to the connecting portion on the power tool body through the plug-in portion, at least one plug-in slot being arranged on the side wall of the plug-in portion, and a plug-in lock being arranged on the power tool body and the same number of the plug-in slots. It is arranged on the side wall of the power tool body and can be rotated along the side wall of the power tool body. The inner end of the plug lock is protruding with a lock tongue, which is arranged in the power tool body and located on one side of the plug-in slot. Driving the plug lock to rotate along the side wall of the power tool body can drive the lock tongue to be inserted into the plug-in slot in an arc direction. At this time, the lock tongue is engaged with the plug-in slot and restricts the movement of the tool head group to enter a locked state. Driving the plug lock to rotate along the side wall of the power tool body can drive the lock tongue to be disengaged from the plug-in slot in an arc direction. At this time, the lock tongue is separated from the plug-in slot, and the tool head group is disconnected from the power tool body so that it can be replaced.

[0006] Furthermore, there are protruding sockets on both sides of the left and right sides of the plug-in part, and the plug-in slot is arranged in the socket. There are two plug-in locks, which are respectively arranged on both sides of the power tool body. The plug-in 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. The lock button can be driven to rotate synchronously with the lock body to insert / disengage the plug-in slot.

[0007] Furthermore, a sliding groove is provided in the power tool body, and the lock body can rotate in an arc direction relative to the power tool body in the sliding groove. An upper abutment part and a lower abutment part are also provided in the sliding groove. Turning the lock button upward can abut against the upper abutment part and release the locked state, and turning the lock button downward can abut against the lower abutment part and enter the locked state.

[0008] Furthermore, an upper observation portion and a lower observation portion are protruding from both ends of the lock body. When the sliding lock button causes the lock tongue to engage with the plug-in slot and enter a locked state, the lower observation portion rotates along the arc with the lock body into the main body of the power tool. At this time, the upper observation portion is exposed from the sliding slot. When the sliding lock button causes the lock tongue to disengage from the plug-in slot and enter a separated state, the lower observation portion rotates along the arc with the lock body and is exposed from the sliding slot. At this time, the upper observation portion rotates into the main body of the power tool.

[0009] 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.

[0010] Furthermore, the connecting portion is provided with a guide seat adapted to the socket, and when the tool head assembly is connected to the power tool body, the socket extends into the guide seat.

[0011] Furthermore, an upper guide portion and a lower guide portion are provided on the plug-in portion, and an upper guide groove and a lower guide groove are provided on the connecting portion, which are respectively adapted to the upper guide portion and the lower guide portion. When the tool head group is inserted into the power tool body, the upper guide portion and the lower guide portion extend along the upper guide groove and the lower guide groove and limit the rotation of the tool head group relative to the power tool body.

[0012] Furthermore, an annular portion is provided at the rear end of the plug-in portion, and an annular groove adapted to the annular portion is provided in the connecting portion. When the plug-in portion is driven to extend into the connecting portion, the annular portion is engaged with the annular groove and limits the inward movement of the tool head group.

[0013] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects:

[0014] The utility model is a power tool for replacing 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. When it is necessary to switch to another tool head group, it is only necessary to manually slide the plug lock, and the plug lock rotates upward along the arc of the side wall of the power tool body. The lock tongue is separated from the plug slot along with the plug lock to release the contact with the inner wall of the plug slot. After the plug slot releases the restricted force, the tool head group is pulled out, and the transmission component in the tool head group is separated from the drive component. The worker can replace the tool by connecting it and inserting the tool head group into the connecting part through the plug-in part. At this time, the transmission component in the tool head group is connected to the drive component in the power tool body. The plug-in slot and the plug-in lock are on the same axis. The worker manually controls the plug-in lock to rotate downward along the arc of the power tool body, and the lock tongue rotates synchronously with the plug-in lock and is inserted into the plug-in slot. At this time, the lock tongue is engaged with the inner end of the plug-in slot to limit the lateral movement of the plug-in part on the tool head group. The tool head group cannot move and is in a locked state, preventing the tool head group from detaching from the power tool body. The safety is higher, and users only need to carry a few types of tool head groups they need to replace when they go out. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the present utility model.

[0016] Figure 2 This is a schematic diagram of the present invention after switching to other tool heads.

[0017] Figure 3 This is one of the schematic diagrams of the separation of the tool head assembly and the power tool body of the utility model.

[0018] Figure 4 This is the second schematic diagram of the separation of the tool head assembly and the power tool body of the utility model.

[0019] Figure 5 It is a three-dimensional diagram of the tool head assembly of the present utility model.

[0020] Figure 6 It is a three-dimensional diagram of the plug-in lock of the utility model.

[0021] Figure 7 It is a schematic diagram of the connection between the plug lock and the tool head assembly of the utility model when locked.

[0022] Figure 8 It is a schematic diagram of the utility model latch lock installed on the sliding slot.

[0023] Figure 9 It is a schematic diagram of the position of the plug lock when the utility model is in the unlocked state.

[0024] The meaning of the numbers in the figure:

[0025] 1-Power tool body; 2-Tool head assembly; 3-Plug-in portion; 4-Connection portion; 5-Plug-in slot;

[0026] 6-plug lock; 7-plug socket; 8-lock body; 9-lock button; 10-lock tongue; 11-sliding groove; 12-upper abutment portion; 13-lower abutment portion; 14-guide seat; 17-annular portion; 18-annular groove; 19-upper observation portion; 20-lower observation portion; 21-upper raised portion; 22-lower raised portion; 23-upper boss portion; 24-lower boss portion; 25-upper guide portion; 26-lower guide portion; 27-upper guide groove; 28-lower guide groove. DETAILED DESCRIPTION

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

[0028] A power tool for replacing a tool head, comprising a power tool body 1 and a tool head group 2 arranged at the front end of the power tool body 1, a drive assembly being provided in the power tool body 1, a transmission assembly being provided in the tool head group 2 that can be connected to the drive assembly, a plug-in portion 3 being provided at the rear end of the tool head group 2, a connecting portion 4 being provided at the front end of the power tool body 1, the tool head group 2 being connectable to the connecting portion 4 on the power tool body 1 through the plug-in portion 3, at least one plug-in slot 5 being provided on the plug-in portion 3, the plug-in slot 5 being provided on the side wall of the plug-in portion 3, the power tool body 1 being provided with a plug-in lock 6 having the same number as the plug-in slot 5, the plug-in lock 6 being provided on the power tool body The side wall of the tool body 1 can be rotated along the side wall of the power tool body 1. The inner end of the plug-in lock 6 is protruded with a lock tongue 10. The lock tongue 10 is arranged in the power tool body 1 and is located on one side of the plug-in slot 5. Driving the plug-in lock 6 to rotate along the side wall of the power tool body 1 can drive the lock tongue 10 to be inserted into the plug-in slot 5 in an arc direction. At this time, the lock tongue 10 is engaged with the plug-in slot 5 and restricts the movement of the tool head group 2 to enter a locked state. Driving the plug-in lock 6 to rotate along the side wall of the power tool body 1 can drive the lock tongue 10 to be disengaged from the plug-in slot 5 in an arc direction. At this time, the lock tongue 10 is separated from the plug-in slot 5, and the tool head group 2 is disconnected from the power tool body 1 so that it can be replaced.

[0029] The utility model is a power tool for replacing tool heads, which is convenient for users to save space in their backpacks when working outdoors, and can quickly replace tool head groups 2 with different functions. It is not necessary to fully charge each tool. A battery pack and a power tool body 1 can be equipped with a variety of tool head groups 2 to complete different types of work. When it is necessary to switch to another tool head group 2, it is only necessary to manually slide the plug lock 6, and the plug lock 6 rotates upward along the arc of the side wall of the power tool body 1. The lock tongue 10 is disengaged from the plug slot 5 along with the plug lock 6 to release the contact with the inner wall of the plug slot 5. After the plug slot 5 releases the restricted force, the tool head group 2 is pulled out, and the transmission component in the tool head group 2 is disconnected from the drive component. The worker can then replace the tool by inserting the tool head group 2 into the connecting part 4 through the plug-in part 3. At this time, the transmission component in the tool head group 2 is connected to the drive component in the power tool body 1, and the plug-in slot 5 and the plug-in lock 6 are on the same axis. The worker manually controls the plug-in lock 6 to rotate downward in an arc along the power tool body 1, and the lock tongue 10 rotates synchronously with the plug-in lock 6 and is inserted into the plug-in slot 5. At this time, the lock tongue 10 is engaged with the inner end of the plug-in slot 5 to limit the lateral movement of the plug-in part 3 on the tool head group 2, and the tool head group 2 cannot move and is in a locked state, preventing the tool head group 2 from being separated from the power tool body 1, which is safer and convenient for users to replace only a few types of tool head groups 2 they need when going out.

[0030] Preferably, both left and right sides of the plug-in portion 3 are provided with a plug-in seat 7, the plug-in slot 5 is provided in the plug-in seat 7, and the number of the plug-in locks 6 is 2 and respectively provided on both sides of the power tool body 1, and the plug-in lock 6 includes a vertically arranged lock body 8 and a lock button 9, the lock button 9 is fixed on the lock body 8 and exposed outside the power tool body 1, and the lock button 9 can be driven to rotate synchronously through the lock body 8 to insert / disengage the plug-in slot 5, and the plug-in locks 6 on both sides are inserted into the plug-in slots 5 on both sides at the same time to prevent the tool head group 2 from moving, which is safer when working. The plug-in lock 6 is set on the power tool body 1 by rotation. When the control limit rotation is locked, the plug-in lock 6 rotates with the arc of the power tool body 1 and is connected to the plug-in slot 5.

[0031] Preferably, a sliding groove 11 is provided in the power tool body 1, and the lock body 8 can rotate in an arc direction relative to the power tool body 1 in the sliding groove 11. An upper abutment 12 and a lower abutment 13 are also provided in the sliding groove 11. The lock button 9 is rotated upward to abut against the upper abutment 12 and release the locked state, and the lock button 9 is rotated downward to abut against the lower abutment 13 and enter the locked state. The sliding groove 11 facilitates the plug-in lock 6 to slide along the arc of the power tool body 1. When the plug-in lock 6 abuts against the upper abutment 12, the tool head group 2 and the power tool body 1 can be disassembled and the tool head group 2 can be replaced. When the plug-in lock 6 abuts against the lower abutment 13, the tool head group 2 and the power tool body 1 are locked and cannot be replaced. Different positions can clearly remind the user what status the tool head group 2 and the power tool body 1 are in to prevent workers from turning on the power and working in a confused manner.

[0032] Preferably, an upper observation portion 19 and a lower observation portion 20 are protruding from both ends of the lock body 8. When the sliding lock button 9 engages the lock tongue 10 with the plug-in slot 5 to enter a locked state, the lower observation portion 20 rotates in an arc direction with the lock body 8 into the power tool body 1. At this time, the upper observation portion 19 is exposed in the sliding slot 11. When the sliding lock button 9 disengages the lock tongue 10 from the plug-in slot 5 to enter a separated state, the lower observation portion 20 rotates in an arc direction with the lock body 8 to be exposed in the sliding slot 11. At this time, the upper observation portion 19 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 19 and the lower observation portion 20. The user can directly judge what state the power tool body 1 is in after observation.

[0033] Preferably, the ends of the upper observation portion 19 and the ends of the lower observation portion 20 are respectively provided with an upper protrusion 21 and a lower protrusion 22, and the power tool body 1 is provided with an upper boss portion 23 and a lower boss portion 24. When the locking button 9 abuts against the upper abutment portion 12, the upper protrusion 21 is restricted by the upper boss portion 23, and when the locking button 9 abuts against the lower abutment portion 13, the lower protrusion 22 is restricted by the lower boss portion 24, thereby preventing the tool head group 2 from being disconnected from the power tool body 1 in the working state and preventing the locking tongue 10 from being disengaged from the plug-in slot 5. The safety is higher and more stable. When the worker needs to slide, he only needs to overcome the abutment force between the upper protrusion 21 and the lower protrusion 22 and the upper boss portion 23 and the lower boss portion 24.

[0034] Preferably, a guide seat 14 adapted to the socket 7 is provided on the connecting portion 4. When the tool head group 2 is connected to the power tool body 1, the socket 7 extends into the guide seat 14 to play a guiding role, facilitate alignment and prevent the tool head group 2 from rotating relative to the power tool body 1.

[0035] Preferably, an upper guide portion 25 and a lower guide portion 26 are further provided on the plug-in portion 3, and an upper guide groove 27 and a lower guide groove 28 are provided on the connecting portion 4, which are respectively adapted to the upper guide portion 25 and the lower guide portion 26. When the tool head group 2 is inserted into the power tool body 1, the upper guide portion 25 and the lower guide portion 26 extend along the upper guide groove 27 and the lower guide groove 28 and limit the rotation of the tool head group 2 relative to the power tool body 1. Both the upper and lower ends are provided to play a guiding role, and the stability is stronger.

[0036] Preferably, an annular portion 17 is provided at the rear end of the plug-in portion 3, and an annular groove 18 adapted to the annular portion 17 is provided in the connecting portion 4. When the plug-in portion 3 is driven to extend into the connecting portion 4, the annular portion 17 is engaged with the annular groove 18 and limits the inward movement of the tool head group 2, limiting the position of the tool head group 2 extending into the power tool body 1, so that the lock tongue 10 on the plug-in lock 6 can be just adapted to the position of the plug-in groove 5.

[0037] 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. A power tool for replacing a tool head, comprising a power tool body (1) and a tool head assembly (2) arranged at the front end of the power tool body (1), wherein the power 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 connecting portion (4). The tool head group (2) can be connected to the connecting portion (4) on the electric tool body (1) through the plug-in portion (3). The plug-in portion (3) is provided with at least one plug-in slot (5), and the plug-in slot (5) is provided on the side wall of the plug-in portion (3). The electric tool body (1) is provided with plug-in locks (6) with the same number as the plug-in slots (5). The plug-in locks (6) are provided on the side wall of the electric tool body (1) and can rotate along the side wall of the electric tool body (1). The inner end of the plug-in lock (6) is provided with a lock tongue (10). ), a lock tongue (10) is arranged in the electric tool body (1) and is located on one side of the plug-in slot (5); driving the plug-in lock (6) to rotate along the side wall of the electric tool body (1) can drive the lock tongue (10) to be inserted into the plug-in slot (5) in an arc direction; at this time, the lock tongue (10) is engaged with the plug-in slot (5) and restricts the movement of the tool head group (2) to enter a locked state; driving the plug-in lock (6) to rotate along the side wall of the electric tool body (1) can drive the lock tongue (10) to be separated from the plug-in slot (5) in an arc direction; at this time, the lock tongue (10) is separated from the plug-in slot (5), and the tool head group (2) is separated from the electric tool body (1) so that it can be replaced.

2. The electric tool for replacing a tool head according to claim 1, characterized in that: The left and right sides of the plug-in portion (3) are both provided with plug-in seats (7), the plug-in slot (5) is provided in the plug-in seat (7), the number of the plug-in locks (6) is two and they are provided on both sides of the power tool body (1), the plug-in lock (6) comprises a vertically arranged lock body (8) and a lock button (9), the lock button (9) is fixed on the lock body (8) and exposed outside the power tool body (1), and the lock button (9) can be driven to rotate synchronously with the lock body (8) to insert into / out of the plug-in slot (5).

3. The electric tool for replacing a tool head according to claim 2, characterized in that: A sliding groove (11) is provided in the electric tool body (1), and the lock body (8) can rotate in an arc direction relative to the electric tool body (1) in the sliding groove (11). An upper abutment portion (12) and a lower abutment portion (13) are also provided in the sliding groove (11). When the lock button (9) is turned upward, it can abut against the upper abutment portion (12) and release the locked state. When the lock button (9) is turned downward, it can abut against the lower abutment portion (13) and enter the locked state.

4. The electric tool for replacing a tool head according to claim 3, characterized in that: The lock body (8) is also provided with an upper observation portion (19) and a lower observation portion (20) at both ends. When the lock button (9) is slid to engage the lock tongue (10) with the plug-in slot (5) to enter a locked state, the lower observation portion (20) rotates along the lock body (8) in an arc direction into the power tool body (1). At this time, the upper observation portion (19) is exposed in the sliding slot (11). When the lock button (9) is slid to disengage the lock tongue (10) from the plug-in slot (5) to enter a separated state, the lower observation portion (20) rotates along the lock body (8) in an arc direction into the sliding slot (11). At this time, the upper observation portion (19) is rotated into the power tool body (1).

5. The electric tool for replacing a tool head according to claim 4, characterized in that: The ends of the upper observation portion (19) and the lower observation portion (20) are respectively provided with an upper protrusion (21) and a lower protrusion (22); an upper boss portion (23) and a lower boss portion (24) are provided in the electric tool body (1); when the locking button (9) abuts against the upper abutment portion (12), the upper protrusion (21) is restricted by the upper boss portion (23); when the locking button (9) abuts against the lower abutment portion (13), the lower protrusion (22) is restricted by the lower boss portion (24).

6. The electric tool for replacing a tool head according to claim 2, characterized in that: The connecting portion (4) is provided with a guide seat (14) adapted to the socket (7); when the tool head assembly (2) is connected to the electric tool body (1), the socket (7) extends into the guide seat (14).

7. The electric tool for replacing a tool head according to claim 1, characterized in that: An upper guide portion (25) and a lower guide portion (26) are also provided on the plug-in portion (3), and an upper guide groove (27) and a lower guide groove (28) are provided on the connecting portion (4), which are respectively matched with the upper guide portion (25) and the lower guide portion (26). When the tool head group (2) is inserted into the power tool body (1), the upper guide portion (25) and the lower guide portion (26) extend along the upper guide groove (27) and the lower guide groove (28) and restrict the tool head group (2) from rotating relative to the power tool body (1).

8. The electric tool for replacing a tool head according to any one of claims 1 to 7, characterized in that: The rear end of the plug-in portion (3) is provided with an annular portion (17), and the connecting portion (4) is provided with an annular groove (18) adapted to the annular portion (17). When the plug-in portion (3) is driven to extend into the connecting portion (4), the annular portion (17) and the annular groove (18) are engaged and restrict the tool head group (2) from moving inward.

Images