Electric wrench

Abstract

The utility model provides an electric wrench which comprises a handle part, a wrench head shell and a transmission shaft part, and an electric driving piece is arranged in the handle part; a driving head, a driven part and a pushing part are arranged in the wrench head shell, the driving head comprises a driving part and a mounting part which are connected, the driving part extends out of the wrench head shell in the first direction, the mounting part is sleeved with the driven part, and the driven part can rotate to drive the driving head to rotate; the first end of the transmission shaft part extends into the handle part and is connected with the electric driving piece; a transmission part is arranged at the second end of the transmission shaft part; when the pushing part pushes the driven part to move to the first position and the transmission shaft part rotates, the transmission part drives the driven part to rotate in the second direction, and when the pushing part pushes the driven part to move to the second position and the transmission shaft part rotates, the transmission part drives the driven part to rotate in the direction opposite to the second direction. According to the electric wrench provided by the embodiment of the invention, a bolt or a nut can be quickly and conveniently tightened or screwed and disassembled, and time and labor are saved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of tools for disassembling and assembling bolts and nuts, and in particular to an electric wrench. Background Art

[0002] A ratchet wrench is a tool used to tighten bolts and nuts. It has a rotating ratchet mechanism and can be used in narrow spaces or places with awkward angles. It is widely used in automobile repair, mechanical repair and home repair.

[0003] In the related art, a ratchet wrench generally includes a handle for a user to hold, a wrench head shell connected to the handle, a ratchet mechanism disposed in the wrench head shell, a drive head connected to the ratchet mechanism, and a reversing switch for controlling the rotation direction of the drive head. The ratchet mechanism can make the wrench rotate in one direction and remain stationary in another direction, so that it is convenient to use in a narrow space. The drive head partially extends out of the wrench head shell, and the part of the drive head extending out of the wrench head shell is usually a square head, which can be connected to a sleeve. The ratchet wrench controls the reversing switch to loosen or tighten the bolt or nut.

[0004] However, the ratchet wrench in the related art requires the user to hold the handle and swing it back and forth to tighten or loosen the bolt or nut. This operation method is time-consuming and laborious, especially when encountering a long screw, it takes a lot of time to tighten or loosen it. Utility Model Content

[0005] The embodiment of the present application provides an electric wrench to solve the technical problem in the related art that it is time-consuming and laborious to tighten or loosen and disassemble bolts or nuts with a ratchet wrench.

[0006] The embodiments of the present application provide the following technical solutions to solve the above technical problems:

[0007] The embodiment of the present application provides an electric wrench, comprising:

[0008] A handle portion, wherein an electric drive member is disposed in the handle portion;

[0009] A wrench head shell, wherein a driving head, a driven part and a pushing part are arranged in the wrench head shell, wherein the driving head comprises a driving part and a mounting part connected to each other, wherein the driving part extends out of the wrench head shell along a first direction, and the driving part is configured as a connecting sleeve; the driven part is sleeved on the mounting part, and the rotation of the driven part can drive the driving head to rotate, and the pushing part is configured to drive the driven part to move forward to a first position or backward to a second position along the first direction;

[0010] A transmission shaft portion, wherein the transmission shaft portion has a first end and a second end relative to each other, the first end extends into the handle portion and is connected to the electric drive component, and the transmission shaft portion can rotate under the driving action of the electric drive component; the second end is provided with a transmission portion, and the second end extends into the wrench head shell; when the driven portion moves to the first position and the transmission shaft portion rotates, the transmission portion drives the driven portion to rotate in a second direction, and the second direction is a direction surrounding the first direction, and when the driven portion moves to the second position and the transmission shaft portion rotates, the transmission portion drives the driven portion to rotate in a direction opposite to the second direction.

[0011] Beneficial effects of the embodiments of the present application: The electric wrench provided in the embodiments of the present application drives the transmission shaft to rotate through the electric drive member, and the transmission part of the transmission shaft cooperates with the driven part, so that the rotation of the transmission shaft can drive the driven part to rotate, and the rotation of the driven part can drive the drive head to rotate, and the driven part can move the position through the pushing part. When the driven part is in the first position, the transmission part can drive the driven part to rotate in the second direction. When the driven part moves to the second position under the action of the pushing part, the transmission part can drive the driven part to rotate in the direction opposite to the second direction, thereby, the drive head can achieve forward or reverse rotation. The electric wrench provided in the embodiments of the present application can drive the transmission shaft to rotate through the electric drive member, and then drive the drive head to rotate, thereby getting rid of the shackles of manually tightening or twisting the disassembly bolts or nuts. The electric wrench provided in the embodiments of the present application can quickly and conveniently tighten or twist the disassembly bolts or nuts, saving time and effort.

[0012] In a possible implementation manner, the driven part includes a first driven part and a second driven part, and the first driven part or the second driven part can drive the driving head to rotate;

[0013] When the driven part moves to the first position, the transmission part cooperates with the first driven part, and when the transmission shaft rotates, the transmission part drives the first driven part to rotate along the second direction;

[0014] When the driven part moves to the second position, the transmission part cooperates with the second driven part, and when the transmission shaft rotates, the transmission part drives the second driven part to rotate in a direction opposite to the second direction.

[0015] In a possible implementation manner, the first driven part, the second driven part and the transmission part are all gears.

[0016] In a possible implementation manner, a support tube is provided between the first driven part and the second driven part, and the support tube is sleeved on the mounting part;

[0017] The pushing part includes a first pushing member, a second pushing member, a connecting member and a toggle member;

[0018] The first pushing member is located at a side of the first driven part facing away from the second driven part, the second pushing member is located at a side of the second driven part facing away from the first driven part, and the connecting member connects the first pushing member and the second pushing member;

[0019] The toggle member pushes the connecting member to move forward or backward along the first direction, and the movement of the connecting member drives the first pushing member and the second pushing member to move along the first direction.

[0020] In a possible implementation manner, the first driven portion includes a first driven matching portion and a first sleeve portion, the first sleeve portion is arranged on a side of the first driven matching portion away from the second driven portion, and the first driven matching portion and the first sleeve portion are both sleeved on the mounting portion;

[0021] The second driven portion comprises a second driven matching portion and a second sleeve portion, the second sleeve portion is arranged on a side of the second driven matching portion away from the first driven portion, and the second driven matching portion and the second sleeve portion are both sleeved on the mounting portion;

[0022] The first pushing member is sleeved on the first sleeve portion and can rotate around the first sleeve portion; the second pushing member is sleeved on the second sleeve portion and can rotate around the second sleeve portion.

[0023] In a possible implementation, the wrench head shell is provided with a toggle mounting hole;

[0024] The toggle member includes a rotating ring and a toggle rod, the rotating ring is sleeved on the transmission shaft, the inner side of the rotating ring is provided with a mounting groove, the toggle rod is connected to the outer side of the rotating ring, and one end of the toggle rod away from the rotating ring passes through the toggle mounting hole and extends out of the wrench head shell;

[0025] The connecting member is sleeved on the transmission shaft and is located at a side of the toggle member away from the handle portion. A connecting column is provided on a side of the connecting member facing the toggle member, and the connecting column extends into the mounting groove.

[0026] The shifting member is configured to bend the shifting rod forward along the circumference of the transmission shaft to a third position, and the driven part moves to the first position, and to bend the shifting rod backward along the circumference of the transmission shaft to a fourth position, and the driven part moves to the second position.

[0027] In a possible implementation manner, the toggle mounting hole includes a third locking section, a connecting section and a fourth locking section, and the third locking section and the fourth locking section cooperate to form a "concave"-shaped structure;

[0028] When the lever is located in the third locking section, the driven part is located in the first position, and when the lever is located in the fourth locking section, the driven part is located in the second position;

[0029] An elastic member is provided on the side of the swivel away from the connecting member, and the elastic member is configured so that when the lever moves from the third locking section through the connecting section to the fourth locking section, the elastic member is compressed, and when the lever moves to the fourth locking section, the force pushing the lever is released, and the elastic member recovers its deformation to push the lever to be clamped in the fourth locking section; when the lever moves from the fourth locking section through the connecting section to the third locking section, the elastic member is compressed, and when the lever moves to the third locking section, the force pushing the lever is released, and the elastic member recovers its deformation to push the lever to be clamped in the third locking section.

[0030] In a possible implementation manner, the transmission shaft portion includes a transmission rod, a pawl, a pawl mounting structure, a ratchet outer gear housing and the transmission portion;

[0031] One end of the transmission rod is connected to the electric drive member, and the other end is connected to the pawl mounting structure;

[0032] The ratchet outer gear housing has a mounting cavity, and the inner side wall of the mounting cavity is provided with ratchet teeth;

[0033] The pawl mounting structure is mounted in the mounting cavity;

[0034] The pawl is connected to the pawl mounting structure, and the pawl cooperates with the ratchet teeth;

[0035] The transmission part is mounted on the outer gear housing of the ratchet;

[0036] The transmission shaft portion is configured to rotate the handle portion along a third direction, the pawl cooperates and locks with the pawl mounting structure, and the handle portion drives the transmission shaft portion to rotate; the handle portion is rotated in a direction opposite to the third direction, and the pawl slides over the back of the ratchet tooth, and the third direction is the axial direction around the transmission rod.

[0037] In a possible implementation, the pawl mounting structure includes a mounting seat and a fixing cover, the mounting seat is provided with mounting openings on two opposite sides, each of the mounting openings is communicated with the first side surface of the mounting seat; the fixing cover is detachably fixed to the mounting seat;

[0038] The pawl comprises a pawl body and mounting posts arranged on two opposite sides of the pawl body. The number of the pawls is two, and the two pawls are respectively mounted in the two mounting openings.

[0039] In a possible implementation manner, the pawl mounting structure is provided with a positioning hole;

[0040] A positioning column is arranged in the installation cavity, and the positioning column extends into the positioning hole.

[0041] In a possible implementation, the wrench head shell has a first opening and a second opening, and the first opening and the second opening are located on opposite sides of the wrench head shell;

[0042] The driving head further comprises a cover, opposite sides of which are respectively connected to the driving part and the mounting part, and the cover covers the first opening;

[0043] The electric wrench further includes a top cover, which covers the second opening.

[0044] In a possible implementation manner, the electric wrench further includes an extension shell;

[0045] The transmission shaft passes through the extension shell. Along the axial direction of the transmission shaft, one end of the extension shell is connected to the wrench head shell, and the other end of the extension shell is connected to the handle.

[0046] In addition to the technical problems solved by the present application, the technical features that constitute the technical solution, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the electric wrench provided by the present application, other technical features included in the technical solution, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0048] Figure 1 A schematic diagram of an electric wrench according to an embodiment of the present application;

[0049] Figure 2 This is an exploded view of the electric wrench according to an embodiment of the present application;

[0050] Figure 3 A partial schematic diagram of an electric wrench with the wrench head shell and the extension shell removed according to an embodiment of the present application;

[0051] Figure 4 This is a schematic diagram of a driving unit according to an embodiment of the present application;

[0052] Figure 5 This is a schematic diagram of a wrench head shell according to an embodiment of the present application;

[0053] Figure 6 It is a schematic diagram of the transmission shaft portion of an embodiment of the present application;

[0054] Figure 7 It is a schematic diagram of the explosive disassembly of the pawl installation structure and the pawl according to the embodiment of the present application.

[0055] Description of reference numerals:

[0056] 100. Handle part;

[0057] 200, wrench head shell;

[0058] 210, driving head; 220, first driven part; 230, second driven part; 240, pushing part; 250, top cover; 260, supporting cylinder; 270, toggle mounting hole; 280, second opening; 290, driven part;

[0059] 211, driving part; 212, mounting part; 213, cover;

[0060] 221, first driven matching portion; 222, first sleeve portion;

[0061] 231, second driven matching portion; 232, second sleeve portion;

[0062] 241, first push member; 242, second push member; 243, connecting member; 244, toggle member;

[0063] 2441, swivel; 2442, lever; 2443, mounting slot;

[0064] 271, third clamping section; 272, connecting section; 273, fourth clamping section;

[0065] 2431, connecting column;

[0066] 300, transmission shaft;

[0067] 310, transmission rod; 320, ratchet; 330, ratchet mounting structure; 340, ratchet outer gear housing; 350, transmission part;

[0068] 321, pawl body; 322, mounting column;

[0069] 331, mounting seat; 332, fixing cover; 333, mounting opening; 334, positioning hole;

[0070] 341, ratchet;

[0071] 400. Extension shell.

[0072] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0073] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0074] like Figure 1 , Figure 2 and Figure 3 As shown, the electric wrench provided in the embodiment of the present application includes a handle portion 100, a wrench head shell 200 and a transmission shaft portion 300. Among them, an electric drive component (not shown in the figure) is arranged in the handle portion 100. In the present application, the electric drive component refers to a device that can provide power output, such as a device formed by a motor and a battery, such as a device including a motor, a battery and a reducer, etc.

[0075] The wrench head shell 200 is provided with a driving head 210, a driven part 290 and a pushing part 240. The driving head 210 includes a driving part 211 and a mounting part 212 connected to each other. The driving part 211 is arranged along a first direction (for example, Figure 3 The wrench head shell 200 is extended out of the wrench head shell 200 (in the Z direction in FIG. 1 ), and the driving part 211 is usually connected to a sleeve, which is used to be sleeved on a bolt or a nut. The driven part 290 is sleeved on the mounting part 212, and the rotation of the driven part 290 can drive the driving head 210 to rotate, and the pushing part 240 is configured to drive the driven part 290 to move forward to the first position or backward to the second position along the first direction.

[0076] The transmission shaft 300 has a first end and a second end opposite to each other. The first end of the transmission shaft 300 extends into the handle 100 and is connected to the electric drive member. The transmission shaft 300 can rotate under the driving action of the electric drive member, that is, the electric drive member can drive the transmission shaft 300 to rotate. The second end of the transmission shaft 300 is provided with a transmission part 350, and the second end of the transmission shaft 300 extends into the wrench head shell 200. When the driven part 290 moves to the first position and the transmission shaft 300 rotates, the transmission part can drive the driven part 290 along the second direction (for example, Figure 3b direction in the figure), the second direction is a direction around the first direction; when the driven part 290 moves to the second position, the transmission part 350 can drive the driven part 290 to rotate in a direction opposite to the second direction. In other words, the driven part 290 can be moved by the pushing part 240, and when the driven part 290 is in the first position, the transmission part 350 can drive the driven part 290 to rotate in the second direction. When the driven part 290 moves to the second position under the action of the pushing part 240, the transmission part 350 can drive the driven part 390 to rotate in a direction opposite to the second direction, thereby, the driving head 210 can realize forward or reverse rotation, thereby realizing that the electric wrench provided in the embodiment of the present application can tighten or loosen bolts and nuts.

[0077] The electric wrench provided in the embodiment of the present application can drive the transmission shaft 300 to rotate through the electric drive component, and then drive the drive head 210 to rotate, thereby getting rid of the shackles of manual operation to tighten or turn the disassembly bolts or nuts. The electric wrench provided in the embodiment of the present application can quickly and conveniently tighten or turn the disassembly bolts or nuts, saving time and effort.

[0078] In some embodiments of the present application, the driven part 290 includes a first driven part 220 and a second driven part 230, and the first driven part 220 or the second driven part 230 can drive the driving head 210 to rotate. When the driven part 290 moves to the first position, the transmission part 350 cooperates with the first driven part 220, and when the transmission shaft part 300 rotates, the transmission part 350 drives the first driven part 220 to rotate in the second direction; when the driven part 290 moves to the second position, the transmission part 350 cooperates with the second driven part 230, and when the transmission shaft part 300 rotates, the transmission part 350 drives the second driven part 230 to rotate in the direction opposite to the second direction. Exemplarily, the first driven part 220, the second driven part 230 and the transmission part 350 are all gears, and exemplary, the first driven part 220 and the second driven part 230 are all helical gears, and the transmission part 350 is a helical gear. That is to say, when the pushing portion 240 drives the driven portion 290 to move forward along the first direction to the first position, the transmission portion 350 is engaged with the first driven portion 220. At this time, the transmission portion 350 is separated from the second driven portion 230, and the electric driving member drives the transmission shaft portion 300 to rotate, and the transmission shaft portion 300 drives the first driven portion 220 to rotate, and the first driven portion 220 drives the driving head 210 to rotate, thereby tightening the bolt or nut, or thereby loosening the bolt or nut. In this embodiment, the first driven portion 220 drives the driving head 210 to rotate. 0 rotation is used to tighten the bolt or nut. Therefore, if you want to loosen the bolt or nut, operate the push part 240 to drive the driven part 290 to move backward along the first direction to the second position. When the driven part 290 moves to the second position, the transmission part 350 engages with the second driven part 230. At this time, the transmission part 350 is separated from the first driven part 220, and the electric drive member drives the transmission shaft part 300 to rotate, the transmission shaft part 300 drives the second driven part 230 to rotate, and the second driven part 230 drives the driving head 210 to rotate, thereby loosening the bolt or nut.

[0079] In other embodiments of the present application, the first driven part 220, the second driven part 230 and the transmission part 350 can be flat gears, helical gears, or other matching structures, as long as they can cooperate with each other to transfer the rotational potential energy of the transmission shaft 300 to the drive head and drive the drive head to rotate. Exemplarily, the mutual contact surface of the first driven part 220 and the transmission part 350, and the mutual contact surface of the second driven part 230 and the transmission part 350 are rough surfaces, and the first driven part 220 or the second driven part 230 can drive the transmission part 350 to rotate by friction.

[0080] For example, Figure 2 , Figure 3 and Figure 4As shown, a support cylinder 260 is provided between the first driven part 220 and the second driven part 230. The support cylinder 260 is sleeved on the mounting part 212 and can rotate with the rotation of the driving head 210. The pushing part 240 includes a first pushing member 241, a second pushing member 242, a connecting member 243 and a toggle member 244. The first pushing member 241 is located on the side of the first driven part 220 facing away from the second driven part 230, the second pushing member 242 is located on the side of the second driven part 230 facing away from the first driven part 220, and the connecting member 243 connects the first pushing member 241 and the second pushing member 242. The toggle member 244 pushes the connecting member 243 to move forward or backward along the first direction, and the movement of the connecting member 243 drives the first pushing member 241 and the second pushing member 242 to move along the first direction. That is to say, when the toggle member 244 is moved forward along the first direction, the toggle member 244 pushes the connecting member 243 to move forward along the first direction, and the connecting member 243 drives the first pushing member 241 and the second pushing member 242 to move forward along the first direction. At this time, the second pushing member 242 pushes the second driven part 230, the support tube 260 and the first driven part 220 to move forward along the first direction until they move to the first position; when the toggle member 244 is moved backward along the first direction, the toggle member 244 pushes the connecting member 243 to move backward along the first direction, and the connecting member 243 drives the first pushing member 241 and the second pushing member 242 to move backward along the first direction. At this time, the first pushing member 241 pushes the first driven part 220, the support tube 260 and the second driven part 230 to move backward along the first direction until they move to the second position. This adjustment method has a simple structure and is easy to process.

[0081] In some embodiments of the present application, the first driven portion 220 includes a first driven matching portion 221 and a first sleeve portion 222, the first sleeve portion 222 is disposed on a side of the first driven matching portion 221 away from the second driven portion 230, and the first driven matching portion 221 and the first sleeve portion 222 are both sleeved on the mounting portion 212. The second driven portion 230 includes a second driven matching portion 231 and a second sleeve portion 232, the second sleeve portion 232 is disposed on a side of the second driven matching portion 231 away from the first driven portion 220, and the second driven matching portion 231 and the second sleeve portion 232 are both sleeved on the mounting portion 212. The first pusher 241 is sleeved on the first sleeve portion 222 and can rotate around the first sleeve portion 222; the second pusher 242 is sleeved on the second sleeve portion 232 and can rotate around the second sleeve portion 232. This arrangement enables the first driven part 220 and the second driven part 230 to be more evenly stressed when the first pushing member 241 pushes the first driven part 220 and the second pushing member 242 pushes the second driven part 230 , thereby facilitating the movement of the first driven part 220 and the second driven part 230 .

[0082] In some embodiments of the present application, the wrench head shell 200 is provided with a toggle mounting hole 270. The toggle member 244 includes a swivel 2441 and a toggle rod 2442. The swivel 2441 is sleeved on the transmission shaft portion 300. The inner side surface of the swivel 2441 is provided with a mounting groove 2443. The toggle rod 2442 is connected to the outer side surface of the swivel 2441. The end of the toggle rod 2442 away from the swivel 2441 passes through the toggle mounting hole 270 and extends out of the wrench head shell 200. The connecting member 243 is sleeved on the transmission shaft portion 300 and is located on the side of the toggle member 244 away from the handle portion 100. A connecting column 2431 is provided on a side of the connecting member 243 facing the toggle member 244. The connecting column 2431 extends into the mounting groove 2443. The toggle member 244 is configured to extend along the circumference of the transmission shaft portion 300 (for example, Figure 3 The lever 2442 is moved forward to the third position (in the direction a in the figure), and the driven part 290 moves to the first position. The lever 2442 is moved backward along the circumference of the transmission shaft 300 to the fourth position, and the driven part 290 moves to the second position. In other words, the lever 2442 extending out of the wrench head shell 200 is moved to control the first pusher 241, the second pusher 242 and the connecting member 243 to move forward or backward along the first direction.

[0083] like Figure 2 , Figure 3 and Figure 5 As shown, the toggle mounting hole 270 includes a third locking section 271, a connecting section 272 and a fourth locking section 273. The third locking section 271 and the fourth locking section 273 cooperate to form a "concave" shaped structure. When the toggle rod 2442 is located in the third locking section 271, the driven portion 290 is located in the first position. When the toggle rod 2442 is located in the fourth locking section 273, the driven portion 290 is located in the second position. An elastic member is provided on the side of the swivel 2441 away from the connecting member 243, and the elastic member is configured so that when the lever 2442 moves from the third locking section 271 to the fourth locking section 273 through the connecting section, the elastic member is compressed, and when the lever 2442 moves to the fourth locking section 273, the force pushing the lever 2442 is released, and the elastic member recovers its deformation to push the lever 2442 to be clamped in the fourth locking section 273; when the lever 2442 moves from the fourth locking section 273 to the third locking section 271 through the connecting section, the elastic member is compressed, and when the lever 2442 moves to the third locking section 271, the force pushing the lever 2442 is released, and the elastic member recovers its deformation to push the lever 2442 to be clamped in the third locking section 271. That is, the elastic member is used to limit the position of the lever 2442 when the driven part 290 moves into position, so as to prevent the shaking of the lever 2442 from affecting the cooperation between the first driven part 220 or the second driven part 230 and the transmission part 350 .

[0084] Exemplarily, the elastic member is a spring, which is disposed between the rotating ring 2441 and the ratchet outer gear housing 340 described below, and the spring is sleeved on the transmission shaft 300 .

[0085] like Figure 2 , Figure 3 , Figure 6 and Figure 7 As shown, the transmission shaft 300 includes a transmission rod 310, a pawl 320, a pawl mounting structure 330, a ratchet outer gear housing 340 and a transmission part 350. One end of the transmission rod 310 is connected to the electric drive member, and the other end is connected to the pawl mounting structure 330. The ratchet outer gear housing 340 has a mounting cavity, and the inner side wall of the mounting cavity is provided with a ratchet 341. The pawl mounting structure 330 is installed in the mounting cavity, the pawl 320 is connected to the pawl mounting structure 330, the pawl 320 cooperates with the ratchet 341, and the transmission part 350 is installed in the ratchet outer gear housing 340. The transmission shaft 300 is configured to be along a third direction (for example, Figure 3 The handle portion 100 is rotated in the direction a) in the third direction, the pawl 320 cooperates and locks with the pawl mounting structure 330, and the handle portion 100 drives the transmission shaft portion 300 to rotate; the handle portion 100 is rotated in the direction opposite to the third direction, the pawl 320 slides over the back of the ratchet tooth 341, and the third direction is the axial direction around the transmission rod 310, that is, the circumferential direction of the transmission shaft portion 300. That is to say, when the handle part 100 is rotated along the third direction, the electric drive component and the transmission rod 310 arranged in the handle part 100 are in a locked state. When the handle part 100 is rotated, the handle part 100 drives the transmission rod 310 to rotate, and the transmission rod 310 drives the pawl mounting structure 330 to rotate. The pawl 320 mounted on the pawl mounting structure 330 cooperates and locks with the ratchet 341 in the ratchet outer tooth housing 340, so that the ratchet outer tooth housing 340 rotates with the pawl 320 and the pawl mounting structure 330. The rotation of the ratchet outer tooth housing 340 drives the transmission part 350 to rotate. The rotation of the transmission part 350 drives the first driven part 220 or the second driven part 230 to rotate. The rotation of the first driven part 220 or the second driven part 230 drives the drive head 210 to rotate, thereby realizing that rotating the handle part 100 can also control the rotation of the drive head 210. When the handle part 100 is rotated in a direction opposite to the third direction, the handle part 100 drives the transmission rod 310 to rotate, and the transmission rod 310 drives the pawl mounting structure 330 to rotate. At this time, the pawl 320 slides over the back of the ratchet tooth 341, that is, the handle part 100 is in an idling state, and it will not drive the ratchet outer tooth housing 340 to rotate, thereby avoiding user misoperation.

[0086] For example, Figure 7As shown, the pawl mounting structure 330 includes a mounting seat 331 and a fixing cover 332. The mounting seat 331 is provided with mounting openings 333 on opposite sides thereof, and each mounting opening 333 is communicated with the first side surface of the mounting seat 331. The fixing cover 332 is detachably fixed to the mounting seat 331. The pawl 320 includes a pawl body 321 and mounting posts 322 provided on opposite sides of the pawl body 321. There are two pawls 320, and the two pawls 320 are respectively installed in the two mounting openings 333.

[0087] Exemplarily, at the installation opening 333, the installation seat 331 and the fixing cover 332 are both provided with holes. When the pawl 320 is installed, one of the installation posts 322 of the pawl 320 is inserted into the hole on the installation seat 331, and the other installation post 322 is installed in the hole on the fixing cover 332. After the pawl 320 is installed on the installation seat 331, the fixing cover 332 and the installation seat 331 are fixedly connected. This arrangement facilitates the assembly of the pawl 320 and the pawl installation structure 330.

[0088] In the embodiment of the present application, a spring (not shown in the figure) is further provided in each installation opening 333 , and the spring acts on the pawl 320 , and the spring rests on the pawl 320 , and when the pawl 320 slides over the back of the ratchet tooth 341 , the spring is compressed.

[0089] In order to facilitate assembly and reduce the shaking of the pawl mounting structure 330 in the mounting cavity, the pawl mounting structure 330 is provided with a positioning hole 334 , and a positioning column is provided in the mounting cavity, and the positioning column extends into the positioning hole 334 .

[0090] like Figure 2 and Figure 5 As shown, in some embodiments of the present application, in order to facilitate the assembly of the electric wrench, the wrench head shell 200 has a first opening and a second opening 280, and the first opening and the second opening 280 are located on opposite sides of the wrench head shell 200. The drive head 210 also includes a cover 213, and the opposite sides of the cover 213 are respectively connected to the drive part 211 and the mounting part 212, and the cover 213 covers the first opening 213. The electric wrench also includes a top cover 250, and the top cover 250 covers the second opening 280 of the cover 213. The cover 213 and the top cover 250 cooperate to close the internal space of the wrench head shell 200, increase the aesthetics of the electric wrench and reduce the entry of dust and other debris into the interior of the wrench head shell 200.

[0091] like Figure 1 and Figure 2 As shown, the electric wrench further includes an extension shell 400, through which the transmission shaft 300 passes, and along the axial direction of the transmission shaft, one end of the extension shell 400 is connected to the wrench head shell 200, and the other end of the extension shell 400 is connected to the handle 100. This arrangement makes the electric wrench more beautiful, safe to use, and easy to operate.

[0092] Exemplarily, the wrench head shell 200, the extension shell 400 and the handle can be three independent components. Of course, the extension shell 400 can be an integrally formed structure with the wrench head shell 200, or the extension shell 400 can be an integrally formed structure with the handle portion 100, which is not specifically limited here.

[0093] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0094] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. An electric wrench, characterized in that: include: A handle portion, wherein an electric drive member is disposed in the handle portion; A wrench head shell, wherein a driving head, a driven part and a pushing part are arranged in the wrench head shell, wherein the driving head comprises a driving part and a mounting part connected to each other, wherein the driving part extends out of the wrench head shell along a first direction; wherein the driven part is sleeved on the mounting part, wherein the rotation of the driven part can drive the driving head to rotate, and wherein the pushing part is configured to drive the driven part to move forward to a first position or backward to a second position along the first direction; A transmission shaft portion, wherein the transmission shaft portion has a first end and a second end relative to each other, the first end extends into the handle portion and is connected to the electric drive component, and the transmission shaft portion can rotate under the driving action of the electric drive component; the second end is provided with a transmission portion, and the second end extends into the wrench head shell; when the driven portion moves to the first position and the transmission shaft portion rotates, the transmission portion drives the driven portion to rotate in a second direction, and the second direction is a direction surrounding the first direction, and when the driven portion moves to the second position and the transmission shaft portion rotates, the transmission portion drives the driven portion to rotate in a direction opposite to the second direction.

2. The electric wrench according to claim 1, characterized in that: The driven part includes a first driven part and a second driven part, and the first driven part or the second driven part can drive the driving head to rotate; When the driven part moves to the first position, the transmission part cooperates with the first driven part, and when the transmission shaft rotates, the transmission part drives the first driven part to rotate along the second direction; When the driven part moves to the second position, the transmission part cooperates with the second driven part, and when the transmission shaft rotates, the transmission part drives the second driven part to rotate in a direction opposite to the second direction.

3. The electric wrench according to claim 2, characterized in that: The first driven part, the second driven part and the transmission part are all gears.

4. The electric wrench according to claim 2, characterized in that: A support tube is provided between the first driven part and the second driven part, and the support tube is sleeved on the mounting part; The pushing part includes a first pushing member, a second pushing member, a connecting member and a toggle member; The first pushing member is located at a side of the first driven part facing away from the second driven part, the second pushing member is located at a side of the second driven part facing away from the first driven part, and the connecting member connects the first pushing member and the second pushing member; The toggle member pushes the connecting member to move forward or backward along the first direction, and the movement of the connecting member drives the first pushing member and the second pushing member to move along the first direction.

5. The electric wrench according to claim 4, characterized in that: The first driven portion comprises a first driven matching portion and a first sleeve portion, the first sleeve portion is arranged on a side of the first driven matching portion away from the second driven portion, and the first driven matching portion and the first sleeve portion are both sleeved on the mounting portion; The second driven portion comprises a second driven matching portion and a second sleeve portion, the second sleeve portion is arranged on a side of the second driven matching portion away from the first driven portion, and the second driven matching portion and the second sleeve portion are both sleeved on the mounting portion; The first pushing member is sleeved on the first sleeve portion and can rotate around the first sleeve portion; the second pushing member is sleeved on the second sleeve portion and can rotate around the second sleeve portion.

6. The electric wrench according to claim 4, characterized in that: The wrench head shell is provided with a toggle mounting hole; The toggle member includes a rotating ring and a toggle rod, the rotating ring is sleeved on the transmission shaft, the inner side of the rotating ring is provided with a mounting groove, the toggle rod is connected to the outer side of the rotating ring, and one end of the toggle rod away from the rotating ring passes through the toggle mounting hole and extends out of the wrench head shell; The connecting member is sleeved on the transmission shaft and is located at a side of the toggle member away from the handle portion. A connecting column is provided on a side of the connecting member facing the toggle member, and the connecting column extends into the mounting groove. The shifting member is configured to bend the shifting rod forward along the circumference of the transmission shaft to a third position, and the driven part moves to the first position, and to bend the shifting rod backward along the circumference of the transmission shaft to a fourth position, and the driven part moves to the second position.

7. The electric wrench according to claim 6, characterized in that: The toggle mounting hole comprises a third clamping section, a connecting section and a fourth clamping section, and the third clamping section and the fourth clamping section cooperate to form a "concave" shaped structure; When the lever is located in the third locking section, the driven part is located in the first position, and when the lever is located in the fourth locking section, the driven part is located in the second position; An elastic member is provided on the side of the swivel away from the connecting member, and the elastic member is configured so that when the lever moves from the third locking section through the connecting section to the fourth locking section, the elastic member is compressed, and when the lever moves to the fourth locking section, the force pushing the lever is released, and the elastic member recovers its deformation to push the lever to be clamped in the fourth locking section; when the lever moves from the fourth locking section through the connecting section to the third locking section, the elastic member is compressed, and when the lever moves to the third locking section, the force pushing the lever is released, and the elastic member recovers its deformation to push the lever to be clamped in the third locking section.

8. The electric wrench according to any one of claims 1 to 7, characterized in that: The transmission shaft portion includes a transmission rod, a pawl, a pawl mounting structure, a ratchet outer gear housing and the transmission portion; One end of the transmission rod is connected to the electric drive member, and the other end is connected to the pawl mounting structure; The ratchet outer gear housing has a mounting cavity, and the inner side wall of the mounting cavity is provided with ratchet teeth; The pawl mounting structure is mounted in the mounting cavity; The pawl is connected to the pawl mounting structure, and the pawl cooperates with the ratchet teeth; The transmission part is mounted on the outer gear housing of the ratchet; The transmission shaft portion is configured to rotate the handle portion along a third direction, the pawl cooperates and locks with the pawl mounting structure, and the handle portion drives the transmission shaft portion to rotate; the handle portion is rotated in a direction opposite to the third direction, and the pawl slides over the back of the ratchet tooth; the third direction is the axial direction around the transmission rod.

9. The electric wrench according to claim 8, characterized in that: The pawl mounting structure includes a mounting seat and a fixing cover, the mounting seat is provided with mounting openings on two opposite sides, each of the mounting openings is communicated with the first side surface of the mounting seat; the fixing cover is detachably fixed to the mounting seat; The number of the ratchets is two, and the two ratchets are respectively installed in the two installation openings.

10. The electric wrench according to claim 8, characterized in that: The pawl mounting structure is provided with a positioning hole; A positioning column is arranged in the installation cavity, and the positioning column extends into the positioning hole.

11. The electric wrench according to any one of claims 1 to 7, characterized in that: The wrench head shell has a first opening and a second opening, wherein the first opening and the second opening are located on opposite sides of the wrench head shell; The driving head further comprises a cover, opposite sides of which are respectively connected to the driving part and the mounting part, and the cover covers the first opening; The electric wrench further includes a top cover, which covers the second opening.

12. The electric wrench according to any one of claims 1 to 7, characterized in that: The electric wrench also includes an extension shell; The transmission shaft passes through the extension shell. Along the axial direction of the transmission shaft, one end of the extension shell is connected to the wrench head shell, and the other end of the extension shell is connected to the handle.

Images