Lightweight ratchet wrench

Abstract

The invention provides a light ratchet wrench which comprises an outer shell, a rotating seat, a ratchet assembly, a reversing mechanism and a mandrel, the rotating seat, the ratchet assembly and the reversing mechanism are arranged in a containing hole of the outer shell, the mandrel is arranged in the outer shell, the rotating seat is divided into two parts which are detachably connected, and the two parts are the first rotating seat and the second rotating seat respectively. The first rotating seat is sleeved with a first gear ring and pivoted with a first ratchet set, the second rotating seat is sleeved with a second gear ring and pivoted with a second ratchet set, the reversing mechanism is inserted into the first rotating seat and the second rotating seat, and the first rotating seat, the first gear ring, the first ratchet set, the second rotating seat, the second gear ring, the second ratchet set and the reversing mechanism are all independent small parts. When the ratchet wrench breaks down, damaged parts can be replaced independently, so that the maintenance cost of the ratchet wrench is reduced, and the service life of the whole ratchet wrench can be prolonged.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of disassembly and assembly tools, and in particular to a lightweight ratchet 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 wrench outer shell, a ratchet mechanism and a rotating seat. A receiving hole is provided at the first end of the wrench outer shell, the rotating seat and the ratchet mechanism are arranged in the receiving hole, the ratchet mechanism is connected to the rotating seat, and a drive head is provided at one end of the rotating seat. The drive head is located on the outside of the receiving hole. The drive head is generally a square head and can be connected to a sleeve, which is used to be sleeved on a bolt or a nut.

[0004] However, the internal structure of the ratchet wrench in the related art is relatively complex and difficult to repair. Summary of the invention

[0005] The embodiment of the present application provides a lightweight ratchet wrench to solve the technical problem that the internal structure of the ratchet wrench in the related art is relatively complex and difficult to repair.

[0006] The embodiments of the present application provide the following technical solutions to solve the above technical problems: The embodiment of the present application provides a lightweight ratchet wrench, which includes: An outer shell, wherein a first end of the outer shell is provided with a receiving hole; A rotating seat, the rotating seat is installed in the accommodating hole, the rotating seat includes a first rotating seat and a second rotating seat, the first rotating seat and the second rotating seat are detachably connected through a connecting piece, the first rotating seat is provided with a driving head, the driving head extends out of the accommodating hole, a first gear ring is sleeved on a side of the first rotating seat away from the driving head, the first gear ring can rotate around the first rotating seat, the first gear ring includes first end teeth and first inner ring teeth, the second rotating seat is sleeved with a second gear ring, the second gear ring can rotate around the second rotating seat, the second gear ring includes second end teeth and second inner ring teeth, the second end teeth are opposite to the first end teeth; A ratchet assembly, the ratchet assembly comprising a first ratchet group and a second ratchet group, the first ratchet group being pivotally mounted on the first rotating seat and meshing with the first inner ring teeth, the second ratchet group being pivotally mounted on the second rotating seat and meshing with the second inner ring teeth; A mandrel, one end of the mandrel is provided with third end teeth, the mandrel is placed inside the housing body, the third end teeth extend between the first end teeth and the second end teeth, and the third end teeth are respectively meshed with the first end teeth and the second end teeth; A reversing mechanism, the reversing mechanism is inserted into the first rotating seat and the second rotating seat, the reversing mechanism is configured to rotate the reversing mechanism, and the reversing mechanism drives the ratchet component to move to a first position or a second position; when the ratchet component moves to the first position, rotate the mandrel, and the drive head rotates clockwise; when the ratchet component moves to the second position, rotate the mandrel, and the drive head rotates counterclockwise.

[0007] The beneficial effects of the embodiment of the present application: The rotating seats of the lightweight ratchet wrench provided by the embodiment of the present application are divided into two detachable parts, namely a first rotating seat and a second rotating seat. A first toothed ring is sleeved on the first rotating seat, and a first ratchet group is pivotally arranged. A second toothed ring is sleeved on the second rotating seat, and a second ratchet group is pivotally arranged. The reversing mechanism is inserted into the first rotating seat and the second rotating seat. The first rotating seat, the first toothed ring, the first ratchet group, the second rotating seat, the second toothed ring, the second ratchet group and the reversing mechanism are all independent small parts. When a failure occurs in the ratchet wrench, the damaged parts can be replaced separately, thereby reducing the maintenance cost of the ratchet wrench and extending the overall service life of the ratchet wrench.

[0008] In a possible implementation manner, the second rotating seat includes a second mounting portion and a second blocking portion. The second mounting portion is configured to pivotally arrange the second ratchet group and sleeved with the second toothed ring. The second blocking portion is arranged on one side of the second mounting portion close to the upper opening of the accommodating hole, and the second blocking portion blocks the second toothed ring from sliding out of the second mounting portion.

[0009] In a possible implementation manner, the first rotating seat includes a first mounting portion and a first blocking portion. The first mounting portion is configured to pivotally arrange the first ratchet group and sleeved with the first toothed ring. The first blocking portion is arranged on one side of the first mounting portion close to the lower opening of the accommodating hole, and the first blocking portion blocks the first toothed ring from sliding out of the first mounting portion.

[0010] In a possible implementation manner, the connecting member is a threaded connecting member; The first rotating seat is provided with a first connecting hole along a first axial direction, and the second rotating seat is provided with a second connecting hole corresponding to the first connecting hole. The first axial direction is the axial direction in which the drive head rotates; The threaded connecting member penetrates through the first connecting hole, extends into the second connecting hole, and is threadedly connected with the second connecting hole, or the threaded connecting member penetrates through the second connecting hole, extends into the first connecting hole, and is threadedly connected with the first connecting hole.

[0011] In a possible implementation, the ratchet wrench further includes an electric drive mechanism, the electric drive mechanism is connected to the mandrel, and the electric drive mechanism drives the mandrel to rotate.

[0012] In a possible implementation, the inner side wall of the accommodation hole is provided with a third inner ring gear; The ratchet tooth assembly further includes a third ratchet tooth group, the third ratchet tooth group is pivotally arranged on the first rotating seat and / or the second rotating seat, and meshes with the third inner ring gear.

[0013] In a possible implementation, the inner side wall of the accommodation hole is provided with an inner convex ring, the inner side wall of the inner convex ring is provided with the third inner ring gear; part of the first rotating seat and / or part of the second rotating seat extends into the inner convex ring; The maximum radial dimension of the first toothed ring and the maximum radial dimension of the second toothed ring are both greater than the minimum radial dimension of the inner ring of the inner convex ring.

[0014] In a possible implementation, the third ratchet tooth group is provided with one ratchet tooth; The inner circle of the inner convex ring is a complete circle, the inner convex ring is provided with a relief notch corresponding to the insertion end of the mandrel, and the third end teeth of the mandrel extend into the relief notch.

[0015] In a possible implementation, both the first ratchet tooth group and the second ratchet tooth group are provided with one ratchet tooth; The first rotating seat is provided with a first groove, the first groove is configured to mount the ratchet tooth of the first ratchet tooth group, the second rotating seat is provided with a second groove, the second groove is configured to mount the ratchet tooth of the second ratchet tooth group, and the first groove and the second groove are located on the same side; The first rotating seat and / or the second rotating seat is provided with a third groove, the third groove is configured to mount the ratchet tooth of the third ratchet tooth group, and the third groove is located on the opposite side of the first groove.

[0016] In a possible implementation, the commutation mechanism includes a commutation rod, and a first elastic member, a second elastic member and a third elastic member mounted on the commutation rod. The first elastic member elastically abuts against the first ratchet tooth group to drive the first ratchet tooth group to change positions, the second elastic member elastically abuts against the second ratchet tooth group to drive the second ratchet tooth group to change positions, and the second elastic member elastically abuts against the second ratchet tooth group to drive the second ratchet tooth group to change positions.

[0017] In addition to the technical problems solved by the present application, the technical features constituting the technical solution, and the beneficial effects brought by the technical features of these technical solutions described above, other technical problems that the lightweight ratchet wrench provided by the present application can solve, other technical features included in the technical solution, and the beneficial effects brought by these technical features will be further described in detail in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings herein are incorporated into and constitute a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0019] Figure 1 It is a schematic diagram of the lightweight ratchet wrench according to an embodiment of the present application; Figure 2 It is an exploded view of the lightweight ratchet wrench according to an embodiment of the present application; Figure 3 It is a schematic diagram of the head of the outer housing according to an embodiment of the present application; Figure 4 It is a schematic diagram of the first rotating seat according to an embodiment of the present application; Figure 5 It is a schematic diagram of the second rotating seat according to an embodiment of the present application.

[0020] Description of the reference numerals: 100, outer housing; 110, first end; 120, receiving hole; 130, inner convex ring; 140, upper opening; 131, third inner ring tooth; 132, relief notch; 200, rotating seat; 210, first rotating seat; 220, second rotating seat; 230, connecting member; 211, driving head; 212, first tooth ring; 213, first end tooth; 214, first inner ring tooth; 215, first groove; 216, third groove; 217, first connecting hole; 218, first blocking portion; 219, first mounting portion; 221, second tooth ring; 222, second end tooth; 223, second inner ring tooth; 224, second groove; 225, second connecting hole; 226, second blocking portion; 227, second mounting portion; 300, ratchet assembly; 310, first ratchet group; 320, second ratchet group; 330, third ratchet group; 340, first pivot; 350, second pivot; 400, mandrel; 410, third end tooth; 500, reversing mechanism; 510, reversing rod; 520, first elastic member; 530, second elastic member; 540, third elastic member; 600. Steering cover.

[0021] 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

[0022] 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.

[0023] like Figure 1 and Figure 2 As shown, the portable ratchet wrench provided in this embodiment includes an outer shell 100, a rotating seat 200, a ratchet assembly 300, a spindle 400 and a reversing mechanism 500. The first end 110 of the outer shell 100 is provided with an accommodating hole 120. The rotating seat 200 is installed in the accommodating hole 120, and the rotating seat 200 includes a first rotating seat 210 and a second rotating seat 220. The first rotating seat 210 and the second rotating seat 220 are detachably connected through a connecting piece 230, that is, the rotating seat 200 is divided into two detachably connected parts, namely the first rotating seat 210 and the second rotating seat 220. The first rotating seat 210 is provided with a driving head 211, and the driving head 211 extends out of the accommodating hole 120. A first gear ring 212 is sleeved on the side of the first rotating seat 210 away from the driving head 211. The first gear ring 212 can rotate around the first rotating seat 210. The first gear ring 212 includes a first end tooth 213 and a first inner ring tooth 214. A second gear ring 221 is sleeved on the second rotating seat 220. The second gear ring 221 can rotate around the second rotating seat 220. The second gear ring 221 includes a second end tooth 222 and a second inner ring tooth 223. The second end tooth 222 is opposite to the first end tooth 213. The ratchet assembly 300 includes a first ratchet group 310 and a second ratchet group 320. The first ratchet group 310 is pivoted on the first rotating seat 210 and meshes with the first inner ring teeth 214. The second ratchet group 320 is pivoted on the second rotating seat 220 and meshes with the second inner ring teeth 223. That is, the first ratchet group 310 cooperates with the first inner gear ring to form a ratchet mechanism, and the second ratchet group 320 cooperates with the second inner gear ring to form another ratchet mechanism.

[0024] In this embodiment, a third end tooth 410 is provided at one end of the mandrel 400. The mandrel 400 is placed inside the outer housing 100. The third end tooth 410 extends between the first end tooth 213 and the second end tooth 222, and the third end tooth 410 meshes with the first end tooth 213 and the second end tooth 222 respectively. That is to say, rotating the mandrel 400 can drive the first toothed ring 212 and the second toothed ring 221 to rotate simultaneously, and the rotation directions of the first toothed ring 212 and the second toothed ring 221 are opposite.

[0025] The reversing mechanism 500 is inserted into the first rotating seat 210 and the second rotating seat 220. The reversing mechanism 500 is configured to rotate the reversing mechanism 500, and the reversing mechanism 500 drives the ratchet assembly 300 to move to the first position or the second position. When the ratchet assembly 300 moves to the first position, rotate the mandrel 400, and the driving head 211 rotates clockwise. When the ratchet assembly 300 moves to the second position, rotate the mandrel 400, and the driving head 211 rotates counterclockwise. Exemplarily, when the ratchet assembly 300 moves to the first position, rotate the mandrel 400 clockwise. The mandrel 400 drives the first toothed ring 212 to rotate clockwise and simultaneously drives the second toothed ring 221 to rotate counterclockwise. The ratchet assembly is in the first position. When the first toothed ring 212 rotates clockwise and the second toothed ring 221 rotates counterclockwise, the first ratchet group is fixed to the first toothed ring 212, and the second ratchet group slides over the second toothed ring 221 (that is, the second ratchet group idles relative to the second toothed ring 221). At this time, the first toothed ring 212 drives the first ratchet group, driving the rotating seat 200 to rotate clockwise, that is, the driving head 211 rotates clockwise. When the ratchet assembly 300 moves to the second position, rotate the mandrel 400 clockwise. The mandrel 400 drives the first toothed ring 212 to rotate clockwise and simultaneously drives the second toothed ring 221 to rotate counterclockwise. The ratchet assembly is in the second position. When the first toothed ring 212 rotates clockwise and the second toothed ring 221 rotates counterclockwise, the first ratchet group slides over the first toothed ring 212 (that is, the first ratchet group idles relative to the first toothed ring 212), and the second ratchet group is fixed to the second toothed ring 221. At this time, the second toothed ring 221 drives the second ratchet group, driving the rotating seat 200 to rotate counterclockwise, that is, the driving head 211 rotates counterclockwise.

[0026] The ratchet wrench provided in this embodiment can rotate the mandrel 400 to drive the drive head 211 to rotate, so as to disassemble and assemble fasteners (such as bolts) that cooperate with the drive head 211. It can also disassemble and assemble fasteners that cooperate with the drive head 211 by swinging the outer housing 100 left and right (along the direction of rotation of the drive head 211). Exemplarily, taking the example of the drive head 211 rotating clockwise to tighten the bolt, during the process of using the ratchet wrench to tighten the bolt, usually the bolt is first screwed by rotating the mandrel 400. When a greater tightening force is required at the end stage, the ratchet wrench is swung left and right to tighten the bolt. That is to say, at the initial stage of tightening the bolt, the bolt is screwed by rotating the mandrel 400, and then the outer housing 100 is swung along the clockwise rotation direction of the drive head 211 to tighten the bolt. When the outer housing 100 is swung along the clockwise rotation direction of the drive head 211, the first ratchet group 310 is clamped with the first toothed ring 212, and the second ratchet group 320 is clamped with the second toothed ring 221. That is to say, the position of the rotating seat 200 is relatively fixed with respect to the first toothed ring 212 and the second toothed ring 221. That is, the rotating seat 200 swings with the swing of the mandrel 400 and the outer housing 100. That is, when the wrench outer housing 100 is swung along the clockwise rotation direction of the drive head 211, the ratchet wrench can tighten the bolt; when the outer housing 100 is swung along the counterclockwise rotation direction of the drive head 211, the first ratchet group 310 idles relative to the first toothed ring 212, and the second ratchet group 320 idles relative to the second toothed ring 221. That is to say, when the outer housing 100 is swung along the counterclockwise rotation direction of the drive head 211, the outer housing 100, the mandrel 400, the first toothed ring 212 and the second toothed ring 221 rotate around the rotating seat 200. At this time, the drive head 211 does not move, and the outer housing 100 swings along the counterclockwise rotation direction of the drive head 211. Thus, the ratchet wrench can tighten the bolt when swung along the clockwise rotation direction of the drive head 211, and idles when swung along the counterclockwise rotation direction of the drive head 211, which is convenient for the tightening operation of the bolt.

[0027] Similarly, when disassembling the fastener by rotating the drive head 211 counterclockwise, taking the example of rotating the drive head 211 counterclockwise to disassemble the bolt, initially swinging along the counterclockwise rotation direction of the drive head 211 can loosen the bolt, and swinging along the clockwise rotation direction of the drive head 211 idles. After loosening the bolt, rotate the mandrel 400 to drive the drive head 211 to rotate counterclockwise, so as to disassemble the bolt.

[0028] The first rotating seat 210, the first toothed ring 212, the first ratchet group 310, the second rotating seat 220, the second toothed ring 221, the second ratchet group 320 and the reversing mechanism 500 of the lightweight ratchet wrench provided in the embodiment of the present application are all independent small parts. When a failure occurs in the ratchet wrench, the damaged parts can be replaced separately, thereby reducing the maintenance cost of the ratchet wrench and extending the overall service life of the ratchet wrench.

[0029] As Figure 5 shown, in some embodiments of the present application, the second rotating seat 220 includes a connected second mounting portion 227 and a second blocking portion 226. The second mounting portion 227 is configured to pivotally mount the second ratchet set 320 and sleeved with the second toothed ring 221. The second blocking portion 226 is disposed on one side of the second mounting portion 227 close to the upper opening 140 of the receiving hole 120. The second blocking portion 226 blocks the second toothed ring 221 from sliding out of the second mounting portion 227. Wherein, the receiving hole 120 has an upper opening 140 and a lower opening, and the driving head 211 extends out of the receiving hole 120 from the lower opening. That is to say, the second ratchet set 320 is pivotally mounted on the second mounting portion 227, and the second toothed ring 221 is sleeved on the second mounting portion 227 from the sleeved end of the second mounting portion 227. The second blocking portion 226 blocks the second toothed ring 221 from detaching from the second mounting portion 227. Wherein, the second blocking portion 226 is disposed on the upper opening 140 side of the receiving hole 120. While the second blocking portion 226 can serve as a blocking portion for the second toothed ring 221, it can also serve as an end cover for the upper opening 140 of the receiving hole 120 to seal the upper opening 140 of the receiving hole 120.

[0030] Exemplarily, as Figure 4 shown, the first rotating seat 210 includes a first mounting portion 219 and a first blocking portion 218. The first mounting portion 219 is configured to pivotally mount the first ratchet set 310 and sleeved with the first toothed ring 212. The first blocking portion 218 is disposed on one side of the first mounting portion 219 close to the lower opening of the receiving hole 120. The first blocking portion 218 blocks the first toothed ring 212 from sliding out of the first mounting portion 219. That is to say, the first ratchet set 310 is pivotally mounted on the first mounting portion 219, and the first toothed ring 212 is sleeved on the first mounting portion 219. The first blocking portion 218 blocks the first toothed ring 212 from detaching from the first mounting portion 219. Wherein, the first blocking portion 218 is disposed on the lower opening side of the receiving hole 120. While the first blocking portion 218 can serve as a blocking portion for the first toothed ring 212, it can also serve as an end cover for the lower opening of the receiving hole 120 to seal the lower opening of the receiving hole 120.

[0031] Exemplarily, annular notches may be provided at the upper opening 140 end and the lower opening end of the receiving hole 120. The first blocking portion 218 is placed in the annular notch at the lower opening end and can rotate in the annular notch at the lower opening end. The second blocking portion 226 is placed in the annular notch at the upper opening 140 end and can rotate in the annular notch at the upper opening 140 end. The first rotating seat 210 and the second rotating seat 220 are connected by a connecting member 230. Thus, the first blocking portion 218 seals the lower opening, the second blocking portion 226 seals the upper opening 140, there is a gap between the first gear ring 212 and the second gear ring 221, and the third end teeth 410 of the core shaft 400 extend into the space between the first end teeth 213 and the second end teeth 222. Exemplarily, in addition to the above installation in the annular notch, the installation methods of the first rotating seat 210 and the second rotating seat 220 may also be as follows: an inner convex ring 130 is provided on the inner side wall of the receiving hole 120. The inner convex ring 130 is provided between the first gear ring 212 and the second gear ring 221. The inner convex ring 130 cooperates with the first blocking portion 218, the first gear ring 212, the second blocking portion 226, the second gear ring 221 and the connecting member 230 connecting the first rotating seat 210 and the second rotating seat 220 to install the rotating seat 200 in the receiving hole 120. Details are as follows.

[0032] Exemplarily, such as Figure 2 , Figure 4 and Figure 5As shown, the connecting member 230 is a threaded connecting member 230 (the threads of the connecting member 230 in the figure are not shown). The first rotating seat 210 is provided with a first connecting hole 217 along the first axial direction, and the second rotating seat 220 is provided with a second connecting hole 225 corresponding to the first connecting hole 217. The threaded connecting member 230 passes through the first connecting hole 217, extends into the second connecting hole 225, and is threadedly connected to the second connecting hole 225, or the threaded connecting member 230 passes through the second connecting hole 225, extends into the first connecting hole 217, and is threadedly connected to the first connecting hole 217. That is to say, the arrangement of the first connecting hole 217 and the second connecting hole 225 can be such that the first connecting hole 217 is a through hole, and the second connecting hole 225 is provided with internal threads. The second connecting hole 225 can be a through hole or a blind hole. When the first connecting hole 217 is a through hole and the second connecting hole 225 is provided with internal threads, the connection between the first rotating seat 210 and the second rotating seat 220 is realized by the threaded connecting member 230 passing through the first connecting hole 217, extending into the second connecting hole 225, and being threadedly connected to the second connecting hole 225. When the second connecting hole 225 is a through hole and the first connecting hole 217 is provided with internal threads, the connection between the first rotating seat 210 and the second rotating seat 220 is realized by the threaded connecting member 230 passing through the second connecting hole 225, extending into the first connecting hole 217, and being threadedly connected to the first connecting hole 217. The method of connecting the first rotating seat 210 and the second rotating seat 220 by the threaded connecting member 230 facilitates the disassembly and assembly of the first rotating seat 210 and the second rotating seat 220.

[0033] In some embodiments of the present application, the ratchet wrench further includes an electric drive mechanism, and the electric drive mechanism is connected to the mandrel 400, and the electric drive mechanism drives the mandrel 400 to rotate. That is to say, when disassembling a fastener with the ratchet wrench provided in the embodiments of the present application, the ratchet wrench can be first swung left and right to loosen the fastener, and then the electric drive mechanism can be used to drive the mandrel 400 to rotate to disassemble the fastener. Similarly, when installing a fastener, the electric drive mechanism can be first used to drive the mandrel 400 to rotate to install the fastener, and then the ratchet wrench can be swung left and right to tighten the fastener. This setting makes it more convenient for the user to disassemble and install the fastener, saving time and effort.

[0034] Such as Figure 2 and Figure 3As shown, in order to reduce the damage to the third end teeth 410, the first tooth ring 212, the second tooth ring 221 and the ratchet assembly 300 when the ratchet wrench is swung left and right to disassemble and assemble fasteners, a third inner ring tooth 131 is provided on the inner side wall of the accommodation hole 120. The ratchet assembly 300 further includes a third ratchet group 330, which is pivotally provided on the first rotating seat 210 and / or the second rotating seat 220 and meshes with the third inner ring tooth 131. That is to say, the third ratchet group 330 can be pivotally provided on the first rotating seat 210, can also be pivotally provided on the second rotating seat 220, or can also be pivotally provided on the overall structure formed by the first rotating seat 210 and the second rotating seat 220. Exemplarily, as Figure 2 shown, the third ratchet group 330 is pivotally provided at the docking place of the first rotating seat 210 and the second rotating seat 220. The cooperation between the third inner ring tooth 131 and the third ratchet group 330 is the same as that between the first inner ring tooth 214 and the first ratchet group 310, and between the second inner ring tooth 223 and the second ratchet group 320. Taking the example of clockwise rotation of the mandrel 400, when the ratchet assembly 300 is in the first position, rotate the mandrel 400 clockwise, the third ratchet group 330 rotates clockwise with the rotating seat 200, and the third ratchet group 330 idles relative to the third inner ring tooth 131. When the outer housing 100 is swung in the clockwise rotation direction of the drive head 211, the third ratchet group 330 is fixed to the third inner ring tooth 131. At this time, the fixed cooperation between the third inner tooth ring and the third ratchet group 330 can reduce the deformation of the first tooth ring 212, the second tooth ring 221 and the third end teeth 410, and reduce the cost of replacing the first tooth ring 212, the second tooth ring 221 and the mandrel 400. When the outer housing 100 is swung in the counterclockwise rotation direction of the drive head 211, the third ratchet group 330 idles relative to the third inner ring tooth 131. Similarly, when the ratchet assembly 300 is in the second position, rotate the mandrel 400 clockwise, the third ratchet group 330 rotates counterclockwise with the rotating seat 200, and the third ratchet group 330 idles relative to the third inner ring tooth 131. When the outer housing 100 is swung in the counterclockwise rotation direction of the drive head 211, the third ratchet group 330 is fixed to the third inner ring tooth 131. At this time, the fixed cooperation between the third inner tooth ring and the third ratchet group 330 can reduce the deformation of the first tooth ring 212, the second tooth ring 221 and the third end teeth 410, and reduce the cost of replacing the first tooth ring 212, the second tooth ring 221 and the mandrel 400. When the outer housing 100 is swung in the clockwise rotation direction of the drive head 211, the third ratchet group 330 idles relative to the third inner ring tooth 131. That is to say, the setting of the third inner tooth ring and the third ratchet group 330 can reduce the deformation of the first tooth ring 212, the second tooth ring 221 and the third end teeth 410, and reduce the cost of replacing the first tooth ring 212, the second tooth ring 221 and the mandrel 400.

[0035] Exemplarily, for the convenience of disassembling and assembling the rotating seat 200 and the ratchet component 300, an inner convex ring 130 is provided on the inner side wall of the accommodating hole 120. A third inner ring gear 131 is provided on the inner side wall of the inner convex ring 130. Part of the first rotating seat 210 and / or part of the second rotating seat 220 extends into the inner convex ring 130. That is to say, when the third ratchet group 330 is pivotally arranged on the first rotating seat 210, part of the first rotating seat 210 extends into the inner convex ring 130. When the third ratchet group 330 is pivotally arranged on the second rotating seat 220, part of the second rotating seat 220 extends into the inner convex ring 130. When the third ratchet group 330 is pivotally arranged on the first rotating seat 210 and the second rotating seat 220, part of the first rotating seat 210 and part of the second rotating seat 220 extend into the inner convex ring 130. Exemplarily, in this embodiment, the third ratchet group 330 is pivotally arranged on the first rotating seat 210 and the second rotating seat 220, and part of the first rotating seat 210 and part of the second rotating seat 220 extend into the inner convex ring 130.

[0036] In order to enable the inner convex ring 130 to cooperate with the first blocking portion 218 to define the position of the first toothed ring 212 and cooperate with the second blocking portion 226 to define the position of the second toothed ring 221, the maximum radial dimension of the first toothed ring 212 and the maximum radial dimension of the second toothed ring 221 are both greater than the minimum radial dimension of the inner ring of the inner convex ring 130. That is to say, the first toothed ring 212 is located between the inner convex ring 130 and the first blocking portion 218, and the second toothed ring 221 is located between the inner convex ring 130 and the second blocking portion 226. Thus, when the rotating seat 200 and the ratchet component 300 are installed, the first ratchet group 310 is pivotally arranged on the first rotating seat 210, the first toothed ring 212 is sleeved on the first rotating seat 210, and the first rotating seat 210 is inserted into the accommodating hole 120 from the lower opening of the accommodating hole 120. At this time, the first blocking portion 218 of the first rotating seat 210 covers the lower opening, and the first toothed ring 212 is placed between the first blocking portion 218 and the inner convex ring 130. Similarly, the second ratchet group 320 is pivotally arranged on the second rotating seat 220, the second toothed ring 221 is sleeved on the second rotating seat 220, and the second rotating seat 220 is inserted into the accommodating hole 120 from the upper opening 140 of the accommodating hole 120. At this time, the second blocking portion 226 of the second rotating seat 220 covers the upper opening 140, and the second toothed ring 221 is placed between the second blocking portion 226 and the inner convex ring 130. The third ratchet group 330 is installed along with the first rotating seat 210 or the second rotating seat 220. After the first rotating seat 210 and the second rotating seat 220 are respectively installed in the accommodating hole 120, the first rotating seat 210 and the second rotating seat 220 are connected by a connecting member 230. Thus, the rotating seat 200, the first toothed ring 212, the second toothed ring 221 and the ratchet component 300 are installed in the accommodating hole 120. This installation method is convenient for the disassembly and assembly of the ratchet wrench.

[0037] Such as Figure 2As shown, in some embodiments of the present application, the third ratchet group 330 is provided with one ratchet tooth. The inner circle of the inner convex ring 130 is a complete circle. The inner convex ring 130 is provided with a relief notch 132 corresponding to the insertion end of the mandrel 400, and the third end tooth 410 of the mandrel 400 extends into the relief notch 132. In this embodiment, the relief notch 132 does not penetrate the inner ring and the outer ring of the inner convex ring 130. Thus, a complete circle of third inner ring teeth 131 can be provided on the inner side wall of the inner convex ring 130, so that the third ratchet group 330 will not be disengaged from the third inner tooth ring, ensuring the stability of the use of the ratchet wrench, and avoiding the situation where the force on the third end tooth 410, the first tooth ring 212, the second tooth ring 221 and the ratchet assembly 300 increases due to the disengagement of the third ratchet group 330 from the third inner tooth ring, reducing the deformation of the first tooth ring 212, the second tooth ring 221 and the third end tooth 410, and reducing the cost of replacing the first tooth ring 212, the second tooth ring 221 and the mandrel 400.

[0038] As Figure 2 , Figure 4 and Figure 5 As shown, in some embodiments of the present application, both the first ratchet group 310 and the second ratchet group 320 are provided with one ratchet tooth. The first rotating seat 210 is provided with a first groove 215, and the first groove 215 is configured to install the ratchet tooth of the first ratchet group 310. The second rotating seat 220 is provided with a second groove 224, and the second groove 224 is configured to install the ratchet tooth of the second ratchet group 320. The first groove 215 and the second groove 224 are located on the same side. The first rotating seat 210 and / or the second rotating seat 220 is provided with a third groove 216, and the third groove 216 is configured to install the ratchet tooth of the third ratchet group 330. The third groove 216 is located on the opposite side of the first groove 215. This setting can reduce the overall volume of the head of the ratchet wrench, making the appearance of the ratchet wrench more compact and delicate. The first rotating seat 210 and / or the second rotating seat 220 being provided with the third groove 216 means that the third groove 216 is provided on the first rotating seat 210, or, the third groove 216 is provided on the second rotating seat 220, or, both the first rotating seat 210 and the second rotating seat 220 are provided with the third groove 216. When the third groove 216 is provided on the first rotating seat 210, the third ratchet group 330 is installed on the first rotating seat 210. When the third groove 216 is provided on the second rotating seat 220, the third ratchet group 330 is installed on the second rotating seat 220. When both the first rotating seat 210 and the second rotating seat 220 are provided with the third groove 216, the third ratchet group 330 is installed on both the first rotating seat 210 and the second rotating seat 220. Exemplarily, in this embodiment, the third groove 216 is provided at the docking position of the first rotating seat 210 and the second rotating seat 220, and the third ratchet group 330 is installed on both the first rotating seat 210 and the second rotating seat 220.

[0039] Exemplarily, the first ratchet group 310 and the second ratchet group 320 are respectively pivotally arranged on the first rotating seat 210 and the second rotating seat 220 through the first pivot 340, and the third ratchet group 330 is pivotally arranged on the first rotating seat 210 and the second rotating seat 220 through the second pivot 350.

[0040] As Figure 2 shown, in some embodiments of the present application, the reversing mechanism 500 includes a reversing rod 510, and a first elastic member 520, a second elastic member 530 and a third elastic member 540 installed on the reversing rod 510. The first elastic member 520 elastically abuts against the first ratchet group 310 to drive the first ratchet group 310 to switch positions. The second elastic member 530 elastically abuts against the second ratchet group 320 to drive the second ratchet group 320 to switch positions. The second elastic member 530 elastically abuts against the second ratchet group 320 to drive the second ratchet group 320 to switch positions. The first elastic member 520, the second elastic member 530 and the third elastic member 540 all include springs, and the springs are not shown in the figure.

[0041] Exemplarily, the reversing rod 510 extends into the second rotating seat 220 and the first rotating seat 210 from the second rotating seat 220. For the convenience of steering operation, a steering cover 600 is arranged at the end of the reversing rod 510, and the steering cover 600 is buckled at the second blocking portion 226.

[0042] Those skilled in the art will readily conceive of other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any variations, uses, or adaptations of the present application, which follow the general principles of the present application and include the common general knowledge or conventional technical means in the technical field not disclosed in the present application. The specification and embodiments are only regarded as exemplary, and the true scope and spirit of the present application are pointed out by the following claims.

[0043] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. A lightweight ratchet wrench, characterized in that: include: An outer shell, wherein a first end of the outer shell is provided with a receiving hole; A rotating seat, the rotating seat is installed in the accommodating hole, the rotating seat includes a first rotating seat and a second rotating seat, the first rotating seat and the second rotating seat are detachably connected through a connecting piece, the first rotating seat is provided with a driving head, the driving head extends out of the accommodating hole, a first gear ring is sleeved on a side of the first rotating seat away from the driving head, the first gear ring can rotate around the first rotating seat, the first gear ring includes first end teeth and first inner ring teeth, the second rotating seat is sleeved with a second gear ring, the second gear ring can rotate around the second rotating seat, the second gear ring includes second end teeth and second inner ring teeth, the second end teeth are opposite to the first end teeth; A ratchet assembly, the ratchet assembly comprising a first ratchet group and a second ratchet group, the first ratchet group being pivotally mounted on the first rotating seat and meshing with the first inner ring teeth, the second ratchet group being pivotally mounted on the second rotating seat and meshing with the second inner ring teeth; A mandrel, one end of which is provided with a third end tooth, the mandrel is placed in the outer shell, the third end tooth extends between the first end tooth and the second end tooth, and the third end tooth is meshed with the first end tooth and the second end tooth respectively; A reversing mechanism, wherein the reversing mechanism is inserted into the first rotating seat and the second rotating seat, and the reversing mechanism is configured to rotate the reversing mechanism, and the reversing mechanism drives the ratchet assembly to move to the first position or the second position; when the ratchet assembly moves to the first position, the core shaft is rotated, and the drive head rotates clockwise, and when the ratchet assembly moves to the second position, the core shaft is rotated, and the drive head rotates counterclockwise.

2. The lightweight ratchet wrench according to claim 1, characterized in that: The second rotating seat includes a second mounting portion and a second blocking portion, the second mounting portion is configured to pivotally mount the second ratchet group and sleeve the second gear ring, the second blocking portion is disposed on a side of the second mounting portion close to the upper opening of the accommodating hole, and the second blocking portion blocks the second gear ring from sliding out of the second mounting portion.

3. The lightweight ratchet wrench according to claim 2, characterized in that: The first rotating seat includes a first mounting portion and a first blocking portion. The first mounting portion is configured to pivotally mount the first ratchet group and sleeve the first gear ring. The first blocking portion is disposed on a side of the first mounting portion close to the lower opening of the accommodating hole. The first blocking portion blocks the first gear ring from sliding out of the first mounting portion.

4. The lightweight ratchet wrench according to claim 1, characterized in that: The connecting piece is a threaded connecting piece; The first rotating seat is provided with a first connecting hole along a first axial direction, and the second rotating seat is provided with a second connecting hole corresponding to the first connecting hole, and the first axial direction is the axial direction of rotation of the driving head; The threaded connection member passes through the first connection hole, extends into the second connection hole, and is threadedly connected to the second connection hole, or the threaded connection member passes through the second connection hole, extends into the first connection hole, and is threadedly connected to the first connection hole.

5. The lightweight ratchet wrench according to claim 1, characterized in that: The ratchet wrench also includes an electric drive mechanism, which is connected to the spindle and drives the spindle to rotate.

6. The lightweight ratchet wrench according to any one of claims 1 to 5, characterized in that: The inner side wall of the accommodating hole is provided with a third inner ring tooth; The ratchet assembly further comprises a third ratchet group, which is pivotally mounted on the first rotating seat and / or the second rotating seat and meshes with the third inner ring teeth.

7. The portable ratchet wrench according to claim 6, characterized in that: An inner convex ring is disposed on the inner side wall of the accommodating hole, and the third inner ring teeth are disposed on the inner side wall of the inner convex ring; The maximum radial dimension of the first gear ring and the maximum radial dimension of the second gear ring are both greater than the minimum radial dimension of the inner convex ring.

8. The lightweight ratchet wrench according to claim 7, characterized in that: The third ratchet group is provided with a ratchet; The inner circle of the inner convex ring is a full circle, and a clearance groove is provided at the inner convex ring corresponding to the insertion end of the core shaft, and the third end teeth of the core shaft extend into the clearance groove.

9. The lightweight ratchet wrench according to claim 8, characterized in that: The first ratchet group and the second ratchet group are each provided with one ratchet; The first rotating seat is provided with a first groove, the first groove is configured to install the ratchet teeth of the first ratchet set, the second rotating seat is provided with a second groove, the second groove is configured to install the ratchet teeth of the second ratchet set, and the first groove and the second groove are located on the same side; The first rotating seat and / or the second rotating seat is provided with a third groove, the third groove is configured to mount the ratchet teeth of the third ratchet tooth group, and the third groove is located on the opposite side to the first groove.

10. The lightweight ratchet wrench according to claim 6, characterized in that: The reversing mechanism includes a reversing rod, and a first elastic abutment, a second elastic abutment and a third elastic abutment installed on the reversing rod, the first elastic abutment springs against the first ratchet group to drive the first ratchet group to change position, the second elastic abutment springs against the second ratchet group to drive the second ratchet group to change position, and the second elastic abutment springs against the second ratchet group to drive the second ratchet group to change position.

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