Electric tool

Abstract

The utility model discloses an electric tool which solves the problem that in the prior art, a clamping piece of an operation wrench of an electric tool is short in service life. The electric tool comprises a shell and a wrench, the wrench comprises a head and a handle, the shell is provided with a wrench limiting assembly, the wrench limiting assembly comprises a first clamping block and a second clamping block which are oppositely arranged, the first clamping block and / or the second clamping block are / is movably connected with the shell, and the first clamping block and / or the second clamping block are / is movably connected with the shell. The first clamping block and the second clamping block are close to each other to clamp the handle portion between the first clamping block and the second clamping block, and the first clamping block and the second clamping block are far away from each other to release clamping of the handle portion. In this way, material fatigue of the first clamping block and the second clamping block in the using process is avoided, and therefore the service life of the first clamping block and the service life of the second clamping block are prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of electric tools, especially an electric tool capable of accommodating an operating wrench. BACKGROUND

[0002] Electric tools, such as chain saws, pistol drills, impact drills, polishers, cutters, etc., need to use an operating wrench to lock or unlock fasteners on the electric tool.

[0003] A Chinese utility model patent with the publication number CN220945224U and the name of electric tool sets a support arm and an elastic arm on the shell of the electric tool, and a storage space for storing the operating wrench is formed between the support arm and the elastic arm. The operating wrench can be stored on the shell of the electric tool by the elastic clamping of the elastic arm and the support arm.

[0004] However, since the elastic arm and the support arm are both fixed on the shell, the operating wrench can be stored or separated from the shell by the elastic deformation of the elastic arm and the support arm, which leads to poor service life of the elastic arm and the support arm. Long-term use can easily cause material fatigue of the elastic arm and the support arm, resulting in insufficient clamping force or even damage to the operating wrench. SUMMARY

[0005] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide an electric tool to solve the problem of poor service life of the operating wrench clamping piece of the electric tool in the prior art.

[0006] In order to achieve the above technical target, the utility model provides an electric tool, which comprises a shell and a wrench. The wrench comprises a head and a handle. The shell is provided with a wrench limiting assembly. The wrench limiting assembly comprises oppositely arranged first and second clamping blocks. The first and / or second clamping blocks are movably connected to the shell. The first and second clamping blocks are moved closer to each other to clamp the handle therebetween. The first and second clamping blocks are moved away from each other to release the clamping of the handle.

[0007] The electric tool of the utility model clamps and attaches the wrench on the shell of the electric tool by moving the first and second clamping blocks closer to each other. The first and second clamping blocks are moved away from each other to release the clamping of the wrench, so that the wrench can be detachably attached and stored on the shell of the electric tool. In addition, the first and second clamping blocks hardly have elastic deformation during movement and clamping of the wrench, which avoids material fatigue of the first and second clamping blocks during use, thereby increasing the service life of the first and second clamping blocks.

[0008] Preferably, the wrench limiting assembly further comprises a first elastic member, which provides a clamping force of the first clamping block and / or the second clamping block to the handle.

[0009] The first elastic member provides a clamping force of the first clamping block and / or the second clamping block to the handle, thereby improving the clamping stability of the wrench limiting assembly to the wrench.

[0010] Preferably, the wrench limiting assembly further comprises a limiting seat arranged on the outer contour of the shell, the first clamping block and / or the second clamping block is movably limited in the limiting seat, and the first elastic member is pre-tightened between the limiting seat and the first clamping block and / or between the limiting seat and the second clamping block.

[0011] The limiting seat is arranged on the outer contour of the shell, so that the wrench can be attached to the outer contour of the shell, and the user can conveniently attach and detach the wrench.

[0012] Preferably, one of the first clamping block and the second clamping block movably arranged close to one end of the other one is provided with a guide inclined surface, and the handle is pressed on the guide inclined surface to push the one movably arranged to move away from the other one.

[0013] When the user attaches the wrench to the shell of the electric tool, the pressing force of the handle on the guide inclined surface can generate a component force overcoming the elastic force of the first elastic member, thereby opening the first clamping block and / or the second clamping block, and reducing the operation difficulty of the user.

[0014] Preferably, the first clamping block and the second clamping block are provided with clamping grooves matched with the handle, and the groove wall on one side of the clamping groove is inclined from the groove bottom to the direction of the handle away from the shell.

[0015] When the wrench moves away from the shell, the first clamping block and the second clamping block can be pushed away from each other, and the handle can move along the direction of the groove wall of the clamping groove, so that the handle is separated from the clamping and limiting of the wrench limiting assembly, thereby the wrench can be easily separated from the shell, and the operation difficulty of the user is reduced.

[0016] Preferably, the wrench limiting assembly further comprises a first sliding block movably arranged relative to the shell, and the shell is provided with a receiving cavity for receiving the head, and the first sliding block moves towards the receiving cavity to press the head on the wall of the receiving cavity.

[0017] The first sliding block movably arranged relative to the shell is used to press the head of the wrench on the wall of the receiving cavity for receiving the head, thereby reducing the shaking of the wrench and the collision between the wrench and the shell, and improving the stability of the attachment and receiving of the wrench.

[0018] As a preferred, the wrench limiting assembly further comprises a second sliding block, a base, a second elastic member pre-tightened between the second sliding block and the base, and a linkage mechanism drivingly connected with the first sliding block and the second sliding block, the pressing of the wrench on the second sliding block enables the second sliding block to slide against the elastic force of the second elastic member, the second elastic member provides a restoring force to the second sliding block, and the movement of the second sliding block drives the first sliding block to press or release the head through the linkage mechanism.

[0019] With the foregoing technical solution, the user can easily and stably attach the wrench to the shell without multiple operations, and easily separate the wrench from the shell, thereby reducing the operation steps of the user and improving the operation convenience.

[0020] As a preferred, the linkage mechanism is a connecting rod drivingly connected with the second sliding block and the first sliding block, and the wrench limiting assembly further comprises a guide groove guiding the sliding direction of the first sliding block.

[0021] With the foregoing technical solution, the linkage of the first sliding block and the second sliding block is realized by using the simple structure of the connecting rod, which helps to reduce the cost.

[0022] As a preferred, the second sliding block slides between the first clamping block and the second clamping block, the sliding direction of the second sliding block is perpendicular to the opening and closing direction of the first clamping block and the second clamping block, and the first clamping block and / or the second clamping block is provided with an avoiding groove for the second sliding block.

[0023] With the foregoing technical solution, on the one hand, the exposure of the second sliding block is avoided, and the probability of damage of the second sliding block due to collision is reduced, and on the other hand, the user can more easily overcome the elastic force of the second elastic member.

[0024] As a preferred, the wrench limiting assembly further comprises a linkage mechanism drivingly connected with the first sliding block and the first clamping block or the second clamping block, and the closing or opening of the first clamping block and the second clamping block drives the first sliding block to press or release the head through the linkage mechanism.

[0025] With the foregoing technical solution, the wrench is stably attached and received on the shell in another way, and the wrench is prevented from shaking or colliding with the shell due to the operation of the electric tool, thereby improving the stability of the attachment and reception of the wrench.

[0026] As a preferred, the first sliding block comprises a first sliding block body, a pressing block, and a third elastic member pre-tightened between the pressing block and the first sliding block body, and the pressing block presses the head on the wall of the cavity.

[0027] By the third elastic member, the force of the first sliding block pressing on the head is controlled, so that the head of the wrench is prevented from being subjected to excessive force.

[0028] These features and advantages of the present utility model will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a schematic view of the wrench attached to the housing in the electric tool of the present utility model embodiment;

[0030] Figure 2 It is an exploded view of the housing, the wrench and the wrench limiting assembly in the present utility model embodiment;

[0031] Figure 3 It is an enlarged view of A in the present utility model embodiment; Figure 2

[0032] Figure 4 It is a schematic view of the wrench limiting assembly in the present utility model embodiment;

[0033] Figure 5 It is a partial sectional view of the wrench limiting assembly clamping the wrench in the present utility model embodiment;

[0034] Figure 6 It is an enlarged view of B in the present utility model embodiment; Figure 5

[0035] Figure 7 It is a partial sectional view of the second sliding block pressing on the head of the wrench;

[0036] Figure 8 It is an enlarged view of C in the present utility model embodiment; Figure 7

[0037] Figure 9 It is a schematic view of the process of the wrench being attached to and received by the housing in the present utility model embodiment.

[0038] REFERENCE SIGNS:

[0039] 100, wrench, 110, head, 120, handle;

[0040] 200, housing, 201, through hole, 210, cavity;

[0041] ​​​300, wrench limiting assembly, 310A, first clamping block, 310B, second clamping block, 311, guide slope, 312, limiting step, 313, clamping groove, 314, avoiding groove, 315, first elastic piece, 320, limiting seat, 321, opening, 330, first sliding block, 331, first sliding block body, 332, pressure bonding block, 333, third elastic piece, 334, limiting plate, 335, extension rod, 340, guide block, 341, guide groove, 350, second sliding block, 351, guide column part, 360, base, 361, second elastic piece, 370, connecting rod. DETAILED DESCRIPTION

[0042] The technical solutions of the embodiments of the utility model are explained and described below in combination with the drawings of the embodiments of the utility model. However, the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without making creative efforts all belong to the protection scope of the utility model.

[0043] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like are the orientation or position relationship shown based on the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0044] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, the meaning of "multiple" and "several" is two or more, unless otherwise explicitly limited.

[0045] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0046] AsFigures 1 to 6 The utility model discloses an electric tool, including shell 200 and wrench 100, the wrench 100 detachably attached on the shell 200, the wrench 100 includes head 110 and handle 120, and the wrench 100 is used to lock or unlock the fastener for locking the work component on the electric tool.

[0047] In the embodiment, the electric tool is a chain saw, the head 110 of the wrench 100 is used to adjust the fastening nut of the chain plate of the chain saw, and the handle 120 of the wrench 100 is provided with a Phillips screwdriver bit at the end away from the head 110 and is used to adjust the Phillips screw of other parts of the chain saw.

[0048] In other embodiments, the electric tool can also be a pistol drill, impact drill, sander, cutting machine and the like, the head 110 of the wrench 100 can be used to lock or unlock the lock head of the electric tool, the lock head is locked to clamp the screwdriver bit, drill bit, polishing piece, cutting piece and the like, and the lock head is unlocked to facilitate replacement of the screwdriver bit, drill bit, polishing piece and cutting piece. The handle 120 of the wrench 100 can also be provided with a Phillips, cross or internal hexagonal screwdriver bit at the end away from the head 110 and is used to adjust the screw of other parts of the pistol drill, impact drill, sander and cutting machine.

[0049] In other embodiments, the electric tool can also be a thermoplastic pipe welder, the head 110 of the wrench 100 is used to lock or unlock the welding head on the welder, and the welding head of the welder is heated to weld the water pipes made of PPR, PE, PB and other hot-melt materials.

[0050] In other embodiments, the electric tool can also be a handheld lawn mower, snow blower and the like.

[0051] In the embodiment, the shell 200 is provided with a wrench limiting assembly 300, the wrench limiting assembly 300 includes oppositely arranged first clamping blocks 310A and second clamping blocks 310B, the first clamping blocks 310A and the second clamping blocks 310B are respectively movably connected with the shell 200, the first clamping blocks 310A and the second clamping blocks 310B are close to each other to clamp the handle 120 therebetween, so that the wrench 100 is clamped and attached to the shell 200, the first clamping blocks 310A and the second clamping blocks 310B are away from each other to release the clamping of the handle 120, and the wrench 100 can be separated from the shell 200.

[0052] Specifically, the first clamping block 310A and the second clamping block 310B are arranged on two sides of the handle 120 in the radial direction, and the first clamping block 310A and the second clamping block 310B are slidably arranged on the housing 200 in the radial direction of the handle 120. When the first clamping block 310A and the second clamping block 310B are close to each other, one section of the handle 120 is wrapped between the first clamping block 310A and the second clamping block 310B, or the opening between the first clamping block 310A and the second clamping block 310B in the disengagement direction of the handle 120 is smaller than the diameter of the handle 120, so that the first clamping block 310A and the second clamping block 310B clamp the handle 120. When the first clamping block 310A and the second clamping block 310B are away from each other, the opening between the first clamping block 310A and the second clamping block 310B in the disengagement direction of the handle 120 is larger than the diameter of the handle 120, so that the wrench 100 can be separated from the wrench limiting assembly 300.

[0053] In other embodiments, the first clamping block 310A is movably connected to the housing 200, and the second clamping block 310B is fixedly arranged relative to the housing 200. The first clamping block 310A is close to the second clamping block 310B to clamp the handle 120 between the first clamping block 310A and the second clamping block 310B, and the first clamping block 310A is away from the second clamping block 310B to release the clamping of the handle 120.

[0054] In other embodiments, the second clamping block 310B can also be movably connected to the housing 200, and the first clamping block 310A is fixedly arranged relative to the housing 200.

[0055] The electric tool of the utility model, through the first clamping block 310A and the second clamping block 310B are close to each other and the wrench 100 is clamped and attached on the housing 200 of the electric tool, the first clamping block 310A and the second clamping block 310B are away from each other and the clamping of the wrench 100 is released, so that the wrench 100 can be detachably attached and received on the housing 200 of the electric tool, and the first clamping block 310A and the second clamping block 310B hardly have elastic deformation in the process of movement and clamping the wrench 100, so that material fatigue of the first clamping block 310A and the second clamping block 310B in the use process is avoided, thereby the service life of the first clamping block 310A and the second clamping block 310B is increased.

[0056] In one embodiment, as shown in Figures 1 to 6 The wrench limiting assembly 300 further comprises a first elastic member 315, the first clamping block 310A and the second clamping block 310B are movably connected to the housing 200, and the first elastic member 315 is provided with two first elastic members 315, which provide clamping force for the first clamping block 310A and the second clamping block 310B to clamp the handle 120.

[0057] In other embodiments, the first clamping block 310A is movably connected to the housing 200, and the second clamping block 310B is fixedly arranged relative to the housing 200. The first elastic member 315 is provided with one first elastic member 315, and the first elastic member 315 provides clamping force for the first clamping block 310A to clamp the handle 120.

[0058] In some other embodiments, the second clamping block 310B is movably connected to the shell 200, the first clamping block 310A is fixedly arranged relative to the shell 200, and the first elastic member 315 is provided as one, which provides the clamping force of the handle 120 to the second clamping block 310B.

[0059] In this way, the first elastic member 315 provides the clamping force of the handle 120 of the wrench 100 to the first clamping block 310A and / or the second clamping block 310B, thereby improving the clamping stability of the wrench limiting assembly 300 to the wrench 100.

[0060] In one embodiment, as shown in Figures 1 to 5 The wrench limiting assembly 300 further includes a limiting seat 320 arranged on the outer contour of the shell 200, the first clamping block 310A and the second clamping block 310B are movably limited in the limiting seat 320, and the first elastic member 315 is provided as two, which are respectively pre-tightened between the limiting seat 320 and the first clamping block 310A, and between the limiting seat 320 and the second clamping block 310B.

[0061] In some other embodiments, the first clamping block 310A is movably limited in the limiting seat 320, the second clamping block 310B is fixedly arranged relative to the shell 200 or the limiting seat 320, and the first elastic member 315 is provided as one, which is pre-tightened between the limiting seat 320 and the first clamping block 310A.

[0062] In some other embodiments, the second clamping block 310B is movably limited in the limiting seat 320, the first clamping block 310A is fixedly arranged relative to the shell 200 or the limiting seat 320, and the first elastic member 315 is provided as one, which is pre-tightened between the limiting seat 320 and the second clamping block 310B.

[0063] The limiting seat 320 has a movable space therein, the first clamping block 310A and / or the second clamping block 310B are movably limited in the limiting seat 320, and the first clamping block 310A and / or the second clamping block 310B partially extend out of the limiting seat 320 to clamp the handle 120. The limiting seat 320 is provided with an opening 321 for the first clamping block 310A and / or the second clamping block 310B to extend out, and the first clamping block 310A and / or the second clamping block 310B are provided with a limiting step 312, which are limited to be separated from the limiting seat 320 through the limiting step 312.

[0064] By arranging the limiting seat 320 and arranging the limiting seat 320 on the outer contour of the shell 200, the wrench 100 can be attached to the outer contour of the shell 200, which is more convenient for the user to perform the attachment and separation operation of the wrench 100.

[0065] The limiting seat 320 can be separate from the housing 200 and fixed to the housing 200 by assembly. Alternatively, the limiting seat 320 can be integrally formed onto the housing 200.

[0066] In one embodiment, such as Figures 1 to 6 As shown, the first clamping block 310A and the second clamping block 310B are movably connected to the housing 200. The first clamping block 310A has a guide slope 311 at one end near the second clamping block 310B, and the second clamping block 310B also has a guide slope 311 at one end near the first clamping block 310A. The downward pressure of the handle 120 acts on the guide slope 311 to make the first clamping block 310A and the second clamping block 310B move in opposite directions, so that the handle 120 enters between the first clamping block 310A and the second clamping block 310B. The first elastic member 315 causes the first clamping block 310A and the second clamping block 310B to reset, thereby clamping the handle 120.

[0067] In some other embodiments, the first clamping block 310A is movably connected to the housing 200, and the second clamping block 310B is fixedly disposed relative to the housing 200. A guide slope 311 is provided on one end of the first clamping block 310A near the second clamping block 310B. The downward pressure of the handle 120 acts on the guide slope 311 to make the first clamping block 310A move in a direction away from the second clamping block 310B.

[0068] In some other embodiments, the second clamping block 310B is movably connected to the housing 200, the first clamping block 310A is fixedly disposed relative to the housing 200, and a guide slope 311 is provided on one end of the second clamping block 310B near the first clamping block 310A. The downward pressure of the handle 120 acts on the guide slope 311 to make the second clamping block 310B move in a direction away from the first clamping block 310A.

[0069] The guide slope 311 can be a plane or an arc surface. The guide slope 311 on the first clamping block 310A slopes downward from one end of the first clamping block 310A toward the second clamping block 310B; the guide slope 311 on the second clamping block 310B slopes downward from one end of the second clamping block 310B toward the first clamping block 310A. The downward pressure of the handle 120 generates a force on the guide slope 311, which in turn generates a component force that pushes the first clamping block 310A to move away from the second clamping block 310B, and / or, generates a component force that pushes the second clamping block 310B to move away from the first clamping block 310A. Thus, the downward pressure of the handle 120 acts on the guide slope 311, pushing one of the moving parts of the first clamping block 310A and the second clamping block 310B to move away from the other.

[0070] In this way, when the user attaches the wrench 100 to the electric tool housing 200, the guide slope 311 enables the downward pressure of the handle to generate a component force overcoming the elastic force of the first elastic member 315, thereby opening the first clamping block 310A and / or the second clamping block 310B, and reducing the operation difficulty of the user.

[0071] In one embodiment, as shown in Figures 1 to 6 The first clamping block 310A and the second clamping block 310B are provided with clamping grooves 313 matched with the handle 120, and the groove wall on one side of the clamping groove 313 is inclined from the groove bottom to the direction of the handle 120 moving away from the housing 200.

[0072] The first clamping block 310A and the second clamping block 310B clamp the handle 120 through the clamping groove 313, and the inclination of the groove wall enables the force applied by the user on the handle 120 in the direction of moving away from the housing 200 to act on the groove wall to generate a component force pushing the first clamping block 310A to move away from the second clamping block 310B, and / or further generate a component force pushing the second clamping block 310B to move away from the first clamping block 310A, so that the first clamping block 310A and the second clamping block 310B move away from each other to release the clamping of the handle 120, and the wrench 100 separates from the wrench limiting assembly 300.

[0073] In this way, the movement of the wrench 100 in the direction of moving away from the housing 200 can push the first clamping block 310A and the second clamping block 310B to move away from each other, and the handle 120 can move in the direction of the groove wall of the clamping groove 313, so that the handle 120 is released from the clamping and limiting of the wrench limiting assembly 300, and the wrench 100 can be separated from the housing 200 more easily, thereby reducing the operation difficulty of the user.

[0074] In one embodiment, as shown in Figures 1 to 4 , Figure 7 , Figure 8 The wrench limiting assembly 300 further includes a first sliding block 330 movably relative to the housing 200, and the housing 200 is provided with a receiving cavity 210 for receiving the head 110, and the first sliding block 330 moves towards the receiving cavity 210 to press the head 110 against the wall of the receiving cavity 210. The first sliding block 330 presses the head 110 to limit the movement of the head 110 relative to the housing 200. The first sliding block 330 releases the pressing of the head 110, and the head 110 moves relative to the housing 200.

[0075] During the use of the electric tool, the movement of the working part of the electric tool will cause the shell 200 to vibrate, and the vibration of the shell 200 will be transmitted to the wrench 100, causing the wrench 100 to shake. In the embodiment, in order to avoid the shaking of the wrench 100 and the impact of the wrench 100 on the shell 200, the head 110 of the wrench 100 is pressed against the wall of the cavity 210 receiving the head 110 of the shell 200 by the first sliding block 330 moving relative to the shell 200, so as to reduce the shaking of the wrench 100 and the impact of the wrench 100 on the shell 200, improve the stability of the attachment and reception of the wrench 100, and make the user more labor-saving when the wrench 100 is attached to the shell 200.

[0076] In one embodiment, as shown in Figures 1 to 4 、 Figures 7 to 9 The wrench limiting assembly 300 further includes a second sliding block 350, a base 360, a second elastic member 361 pre-tightened between the second sliding block 350 and the base 360, and a linkage mechanism drivingly connected between the second sliding block 350 and the first sliding block 330. The pressing of the wrench 100 on the second sliding block 350 causes the second sliding block 350 to slide against the elastic force of the second elastic member 361, the second elastic member 361 provides a restoring force to the second sliding block 350, and the movement of the second sliding block 350 drives the first sliding block 330 to press or release the head 110 through the linkage mechanism.

[0077] In the embodiment, the base 360 is installed inside the shell 200, and the base 360 has a sliding cavity to receive at least part of the second sliding block 350. The second sliding block 350 can slide in the sliding cavity of the base 360, and an end of the second sliding block 350 away from the base 360 is provided with a guide column portion 351 extending out of the shell 200. The pressing of the wrench 100 on the guide column portion 351 causes the second sliding block 350 to move with the pressing of the wrench 100. The pressing of the wrench 100 on the guide column portion 351 can be the head 110 acting on the guide column portion 351, or the handle 120 acting on the guide column portion 351.

[0078] Through the above arrangement, the user can easily and stably attach and receive the wrench 100 on the shell 200 without multiple operations, and easily separate the wrench 100 from the shell 200, reducing the operation steps of the user and improving the operation convenience.

[0079] In one embodiment, the structure of the linkage mechanism is described as follows: Figures 2 to 4As shown, the linkage mechanism is a connecting rod 370, the connecting rod 370 is drivingly connected with the second sliding block 350 and the first sliding block 330, the wrench limiting assembly 300 further comprises a guide groove 361, the guide groove 361 guides the sliding direction of the first sliding block 330.

[0080] In the embodiment, the wrench limiting assembly 300 further comprises a guide block 340, the guide block 340 is provided with a guide groove 341, the guide groove 341 guides the sliding direction of the first sliding block 330. The guide block 340 is installed inside the housing 200, the housing 200 is provided with a through hole 201, part of the first sliding block 330 extends out of the through hole 201 for cooperating with the head 110. The through hole 201 extends radially so that the first sliding block 330 can move radially in the through hole 201.

[0081] In the embodiment, the first sliding block 330 is provided with an extension rod 335, one end of the connecting rod 370 is rotatably connected with the extension rod 335 to form a first connection point, the other end of the connecting rod 370 is rotatably connected with the second sliding block 350 to form a second connection point. The movement of the second sliding block 350 makes the second connection point have a tendency to move away from or close to the first connection point, because the length of the connecting rod 370 is fixed, the first sliding block 330 can move with the movement of the second sliding block 350.

[0082] In the embodiment, the extension rod 335 is provided to control the sliding distance of the first sliding block 330, in other embodiments, the first sliding block 330 can also not be provided with the extension rod 335.

[0083] In other embodiments, the wrench limiting assembly 300 further comprises a transmission member, the movement of the second sliding block 350 drives the transmission member to move, one end of the transmission member is rotatably connected with the connecting rod 370 so that the movement of the second sliding block 350 drives the first sliding block 330 to move.

[0084] Through the above arrangement, the linkage of the first sliding block 330 and the second sliding block 350 is realized by using the simple structure of the connecting rod, which helps to reduce the cost.

[0085] In other embodiments, the first sliding block 330 and the second sliding block 350 can also realize linkage through the cooperation of a rack, a lead screw and a nut seat. The second sliding block 350 is provided with a rack, the first sliding block 330 is provided with a nut seat, the movement of the second sliding block 350 makes the rack drive the lead screw to rotate, the rotation of the lead screw drives the nut seat to move, thereby realizing the movement of the first sliding block 330. Because the movement direction of the first sliding block 330 is limited to the axial direction of the lead screw, in the embodiment, the guide groove is not required to be provided.

[0086] In other embodiments, the first sliding block 330 and the second sliding block 350 can also realize linkage through the cooperation of the inclined surfaces respectively provided on the two sliding blocks, the two sliding blocks are respectively provided with elastic members and are reset through the respective elastic members.

[0087] In one embodiment, as shown in Figures 2 to 4 、 Figure 9 The second slider 350 slides between the first clamp block 310A and the second clamp block 310B, and the sliding direction of the second slider 350 is perpendicular to the opening and closing direction of the first clamp block 310A and the second clamp block 310B.

[0088] Since the sliding direction of the second slider 350 is perpendicular to the opening and closing direction of the first clamp block 310A and the second clamp block 310B, the downward pressure of the handle 120 can act on the second slider 350 to move the first slider 330 with the second slider 350.

[0089] Secondly, since the wrench 100 is attached to the housing 200 by exerting a downward pressure on the handle 120 with the head 100 as the fulcrum, in order to facilitate user operation, the first clamp block 310A and the second clamp block 310B are arranged to clamp the middle part of the handle 120, so that the force exerted by the user on the handle 120 is amplified and applied to the second slider 350, and the user can more easily overcome the elastic force of the second elastic member 361.

[0090] Through the above arrangement, on the one hand, the second slider 350 is avoided from being exposed, reducing the probability of being damaged by collision, and on the other hand, the user can more easily overcome the elastic force of the second elastic member 361.

[0091] Preferably, in the embodiment, the first clamp block 310A and / or the second clamp block 310B is provided with an avoiding slot 314 for avoiding the second slider 350. The avoiding slot 314 is used to avoid the guide post part 351 on the second slider 350.

[0092] In this way, on the one hand, the second slider 350 can be better protected by the first clamp block 310A and the second clamp block 310B, further avoiding damage to the second slider 350.

[0093] Further preferably, the first clamping block 310A and / or the second clamping block 310B are provided with clamping force and reset force by the first elastic member 315, one of the first clamping block 310A and the second clamping block 310B, which is movable, is provided with a guide inclined surface 311 at one end close to the other, and the pressing of the handle 120 on the guide inclined surface 311 pushes the movable one to move away from the other. The upward movement of the handle 120 makes the first elastic member 315 push the first clamping block 310A and / or the second clamping block 310B to reset, and the second elastic member 361 pushes the second sliding block 350 to reset, the reset of the second sliding block 350 makes the guide column 351 reset to between the first clamping block 310A and the second clamping block 310B, and the closure of the first clamping block 310A and the second clamping block 310B makes the guide column 351 be limited in the avoiding groove 314 on the first clamping block 310A and / or the second clamping block 310B. The avoiding groove 314 makes the first clamping block 310A and the second clamping block 310B maintain a reasonable distance between them when closed.

[0094] In one embodiment, as shown in Figure 2 、 Figure 7 、 Figure 8 The first sliding block 330 includes a first sliding block body 331, a pressing block 332 and a third elastic member 333, the third elastic member 333 is pre-tightened between the pressing block 332 and the first sliding block body 331, and the pressing block 332 is used to press the head 110 on the wall of the cavity 210.

[0095] The first sliding block 330 further includes a guide plate 334, and a space for limiting the pressing block 332 is provided in the first sliding block body 331, the guide plate 334 is arranged in the first sliding block body 331 to guide the movement direction of the pressing block 332, and one end of the pressing block 332 can extend out of the first sliding block body 331 to contact the head 110.

[0096] The pressing block 332 is further provided with a flexible pad, and the pressing block 332 is used to press the head 110 through the flexible pad.

[0097] In this way, the force of the first sliding block 330 pressing on the head 110 is controlled by the third elastic member 333, so that the head 110 of the wrench 100 is prevented from being subjected to excessive force.

[0098] In one embodiment, the wrench limiting assembly further includes a linkage mechanism, the linkage mechanism is in transmission connection with the first sliding block 330 and the first clamping block 310A or the second clamping block 310B, and the closing or opening of the first clamping block 310A and the second clamping block 310B drives the first sliding block 330 to press or release the head 110 through the linkage mechanism.

[0099] In this embodiment, the linkage mechanism can be a connecting rod, or a rack, a screw and a nut seat, or a respective inclined surface and an elastic member. For details, reference can be made to the foregoing embodiments.

[0100] The user can release the clamping of the handle 120 by pulling the first clamping block 310A and the second clamping block 310B, and the linkage of the first sliding block 330 also releases the locking of the head 110, so that the wrench 100 can be separated from the housing 200. The user can also clamp the locking handle 120 by pulling the first clamping block 310A and the second clamping block 310B, and the linkage of the first sliding block 330 locks the head 110, so that the wrench 100 is stably attached and received in the housing 200.

[0101] In another way, the wrench 100 is stably attached and received in the housing 200, avoiding the wrench 100 from shaking or colliding with the housing 200 during the operation of the electric tool, and improving the stability of the attachment and reception of the wrench 100.

[0102] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Those skilled in the art should understand that the present application includes but is not limited to the contents described in the drawings and the above specific embodiment. Any modification that does not deviate from the function and structural principle of the present application shall be included in the scope of the claims.

Claims

1. A power tool comprising a housing and a trigger, the trigger comprising a head portion and a handle portion, characterized in that, The wrench limiting assembly comprises a first clamping block and a second clamping block arranged oppositely, the first clamping block and / or the second clamping block is movably connected with the shell, the first clamping block and the second clamping block are close to each other to clamp the handle therebetween, and the first clamping block and the second clamping block are away from each other to release the clamping of the handle.

2. The power tool of claim 1, wherein The wrench limiting assembly further comprises a first elastic member, which provides a clamping force to the first clamping block and / or the second clamping block.

3. The power tool of claim 2, wherein the first and second electrical conductors are electrically connected to the motor by a common electrical conductor. The wrench limiting assembly further comprises a limiting seat arranged on the outer contour of the shell, the first clamping block and / or the second clamping block is movably limited in the limiting seat, and the first elastic member is pre-tightened between the limiting seat and the first clamping block and / or between the limiting seat and the second clamping block.

4. The power tool of claim 2, wherein the first and second electrical conductors are electrically connected to the motor by a single electrical connector. One of the first clamping block and the second clamping block movably arranged close to one end of the other one is provided with a guide inclined surface, and the handle is pressed on the guide inclined surface to push the movable one to move away from the other one.

5. The power tool of claim 2, wherein the first and second electrical conductors are electrically connected to the motor by a single electrical connector. The first clamping block and the second clamping block are provided with clamping grooves matched with the handle, and the groove wall on one side of the clamping groove is inclined from the groove bottom to the direction in which the handle moves away from the shell.

6. The power tool of claim 1, wherein, The wrench limiting assembly further comprises a first sliding block movably arranged relative to the shell, and the shell is provided with a containing cavity for receiving the head, and the first sliding block moves towards the containing cavity to press the head on the wall of the containing cavity.

7. An electric power tool according to claim 6, wherein The wrench limiting assembly further comprises a second sliding block, a base, a second elastic member, and a linkage mechanism, the second elastic member is pre-tightened between the second sliding block and the base, the linkage mechanism is transmissionally connected with the first sliding block and the second sliding block, the second sliding block is slid against the elastic force of the second elastic member under the pressing of the wrench, the second elastic member provides a reset force to the second sliding block, and the movement of the second sliding block drives the first sliding block to press or release the head through the linkage mechanism.

8. An electric power tool according to claim 7, wherein The linkage mechanism is a connecting rod, the connecting rod is transmissionally connected with the second sliding block and the first sliding block, and the wrench limiting assembly further comprises a guide groove for guiding the sliding direction of the first sliding block.

9. The power tool of claim 7, wherein the first and second electrical conductors are electrically connected to the motor by a single electrical connector. The second sliding block is slid between the first clamping block and the second clamping block, the sliding direction of the second sliding block is perpendicular to the opening and closing direction of the first clamping block and the second clamping block, and the first clamping block and / or the second clamping block is provided with an avoiding groove for avoiding the second sliding block.

10. The power tool of claim 6, wherein the motor is a brushless motor. The linkage mechanism is transmissionally connected with the first sliding block and the first clamping block or the second clamping block, and the closing or opening of the first clamping block and the second clamping block drives the first sliding block to press or release the head through the linkage mechanism.

11. The power tool of claim 6, wherein the motor is a brushless motor. The first sliding block comprises a first sliding block body, a pressing block, and a third elastic member, the third elastic member is pre-tightened between the pressing block and the first sliding block body, and the pressing block presses the head on the wall of the containing cavity.

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