Lightweight ratchet wrench

Abstract

The utility model 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] This application relates to the field of disassembly and assembly tools, and in particular to a lightweight ratchet wrench. Background Technology

[0002] A ratchet wrench is a tool used to tighten bolts and nuts. It has a rotating ratchet mechanism, which can be used in confined spaces or places where the angle is inconvenient. It is widely used in car repair, machinery repair and home repair.

[0003] In related technologies, a ratchet wrench typically includes a wrench housing, a ratchet mechanism, and a rotating seat. The first end of the wrench housing is provided with a receiving hole, and the rotating seat and ratchet mechanism are disposed in the receiving hole. The ratchet mechanism is connected to the rotating seat, and one end of the rotating seat is provided with a drive head. The drive head is located outside the receiving hole and is usually a square head. It can be connected to a sleeve, which is used to fit onto a bolt or nut.

[0004] However, the internal structure of the ratchet wrench in the relevant technology is relatively complex and not easy to repair. Utility Model Content

[0005] This application provides a lightweight ratchet wrench to solve the technical problem that ratchet wrenches in the related art have a relatively complex internal structure and are difficult to repair.

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

[0007] This application provides a lightweight ratchet wrench, which includes:

[0008] The outer casing has a receiving hole at its first end;

[0009] A rotating seat is installed in the receiving hole. The rotating seat includes a first rotating seat and a second rotating seat, which are detachably connected by a connector. The first rotating seat is provided with a driving head that extends out of the receiving hole. A first toothed ring is sleeved on the side of the first rotating seat opposite to the driving head. The first toothed ring can rotate around the first rotating seat and includes a first end tooth and a first inner ring tooth. A second toothed ring is sleeved on the second rotating seat and can rotate around the second rotating seat. The second toothed ring includes a second end tooth and a second inner ring tooth, with the second end tooth opposite to the first end tooth.

[0010] A ratchet assembly, comprising a first ratchet group and a second ratchet group, wherein the first ratchet group is pivotally mounted on the first rotating seat and meshes with the first inner ring tooth, and the second ratchet group is pivotally mounted on the second rotating seat and meshes with the second inner ring tooth;

[0011] A mandrel, one end of which is provided with a third end tooth, is placed inside the outer casing, the third end tooth extends between the first end tooth and the second end tooth, and the third end tooth meshes with the first end tooth and the second end tooth respectively;

[0012] A reversing mechanism is inserted into the first rotating seat and the second rotating seat. The reversing mechanism is configured to rotate, thereby driving the ratchet assembly to move to a first position or a second position. When the ratchet assembly moves to the first position, the spindle is rotated, and the drive head rotates clockwise. When the ratchet assembly moves to the second position, the spindle is rotated, and the drive head rotates counterclockwise.

[0013] The beneficial effects of the embodiments of this application are as follows: The rotating seat of the lightweight ratchet wrench provided in this application embodiment is divided into two detachably connected 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 set is pivotally mounted thereon. A second toothed ring is sleeved on the second rotating seat and a second ratchet set is pivotally mounted thereon. A 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 set, the second rotating seat, the second toothed ring, the second ratchet set, and the reversing mechanism are all independent small parts. When the ratchet wrench malfunctions, the damaged parts can be replaced individually, thereby reducing the maintenance cost of the ratchet wrench and extending the overall service life of the ratchet wrench.

[0014] In one possible implementation, 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 assembly and sleeve the second toothed ring. The second blocking portion is located on the side of the second mounting portion near the upper opening of the receiving hole, and the second blocking portion prevents the second toothed ring from sliding out of the second mounting portion.

[0015] In one possible implementation, 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 assembly and sleeve the first toothed ring. The first blocking portion is located on the side of the first mounting portion near the lower opening of the receiving hole, and the first blocking portion prevents the first toothed ring from sliding out of the first mounting portion.

[0016] In one possible implementation, the connector is a threaded connector;

[0017] The first rotating seat is provided with a first connecting hole along the first axis, and the second rotating seat is provided with a second connecting hole corresponding to the first connecting hole. The first axis is the axis of rotation of the driving head.

[0018] The threaded connector passes through the first connecting hole, extends into the second connecting hole, and is threadedly connected to the second connecting hole; or, the threaded connector passes through the second connecting hole, extends into the first connecting hole, and is threadedly connected to the first connecting hole.

[0019] In one possible implementation, the ratchet wrench further includes an electric drive mechanism connected to the spindle, the electric drive mechanism driving the spindle to rotate.

[0020] In one possible implementation, the inner sidewall of the receiving hole is provided with a third inner ring tooth;

[0021] The ratchet assembly further includes 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 tooth.

[0022] In one possible implementation, the inner sidewall of the receiving hole is provided with an inner convex ring, and the inner sidewall of the inner convex ring is provided with the third inner ring tooth; a portion of the first rotating seat and / or a portion of the second rotating seat extends into the inner convex ring;

[0023] 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.

[0024] In one possible implementation, the third ratchet group is provided with a ratchet tooth;

[0025] The inner circle of the inner convex ring is a complete circle, and the inner convex ring is provided with a relief groove corresponding to the insertion end of the mandrel. The third end tooth of the mandrel extends into the relief groove.

[0026] In one possible implementation, both the first ratchet group and the second ratchet group are provided with one ratchet.

[0027] The first rotating seat is provided with a first groove, which is configured to install the ratchet teeth of the first ratchet set; the second rotating seat is provided with a second groove, which is configured to install the ratchet teeth of the second ratchet set; the first groove and the second groove are located on the same side.

[0028] The first rotating seat and / or the second rotating seat are provided with a third groove, the third groove being configured to install the ratchet teeth of the third ratchet set, and the third groove being located on the opposite side of the first groove.

[0029] In one possible implementation, the reversing mechanism includes a reversing rod and a first spring abutment, a second spring abutment, and a third spring abutment mounted on the reversing rod. The first spring abutment abuts against the first ratchet set, causing the first ratchet set to change position. The second spring abutment abuts against the second ratchet set, causing the second ratchet set to change position.

[0030] In addition to the technical problems solved by this application, the technical features constituting the technical solution, and the beneficial effects brought about by the technical features of these technical solutions as described above, other technical problems that can be solved by the lightweight ratchet wrench provided by this application, other technical features contained in the technical solution, and the beneficial effects brought about by these technical features will be further explained in detail in the specific embodiments. Attached Figure Description

[0031] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0032] Figure 1 This is a schematic diagram of a lightweight ratchet wrench according to an embodiment of this application;

[0033] Figure 2 This is an exploded view of the lightweight ratchet wrench according to an embodiment of this application;

[0034] Figure 3 This is a schematic diagram of the head of the outer casing in an embodiment of this application;

[0035] Figure 4 This is a schematic diagram of the first rotating seat according to an embodiment of this application;

[0036] Figure 5 This is a schematic diagram of the second rotating seat in an embodiment of this application.

[0037] Explanation of reference numerals in the attached figures:

[0038] 100. Outer shell;

[0039] 110. First end; 120. Receiving hole; 130. Inner convex ring; 140. Upper opening;

[0040] 131. Third inner ring tooth; 132. Relief groove;

[0041] 200. Rotating seat;

[0042] 210. First rotating seat; 220. Second rotating seat; 230. Connecting member;

[0043] 211. Drive head; 212. First toothed ring; 213. First end tooth; 214. First inner ring tooth; 215. First groove; 216. Third groove; 217. First connecting hole; 218. First blocking part; 219. First mounting part;

[0044] 221. Second toothed ring; 222. Second end tooth; 223. Second inner ring tooth; 224. Second groove; 225. Second connecting hole; 226. Second blocking part; 227. Second mounting part;

[0045] 300. Ratchet assembly;

[0046] 310, First ratchet group; 320, Second ratchet group; 330, Third ratchet group; 340, First pivot; 350, Second pivot;

[0047] 400, mandrel;

[0048] 410. Third end tooth;

[0049] 500. Reversing mechanism;

[0050] 510. Reversing lever; 520. First spring stop; 530. Second spring stop; 540. Third spring stop;

[0051] 600. Turnstile cover.

[0052] The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0053] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0054] like Figure 1 and Figure 2As shown, the lightweight ratchet wrench provided in this embodiment includes a housing 100, a rotating base 200, a ratchet assembly 300, a spindle 400, and a reversing mechanism 500. The housing 100 has a receiving hole 120 at its first end 110. The rotating seat 200 is installed in the receiving hole 120. 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 by a connector 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, which extends out of the receiving hole 120. A first toothed ring 212 is sleeved on the side of the first rotating seat 210 away from the driving head 211. The first toothed ring 212 can rotate around the first rotating seat 210. The first toothed ring 212 includes a first end tooth 213 and a first inner ring tooth 214. A second toothed ring 221 is sleeved on the second rotating seat 220. The second toothed ring 221 can rotate around the second rotating seat 220. The second toothed 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 pivotally mounted on the first rotating seat 210 and meshes with the first inner ring tooth 214. The second ratchet group 320 is pivotally mounted on the second rotating seat 220 and meshes with the second inner ring tooth 223. That is, the first ratchet group 310 and the first inner ring tooth form a ratchet mechanism, and the second ratchet group 320 and the second inner ring tooth form another ratchet mechanism.

[0055] 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 casing 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 tooth ring 212 and the second tooth ring 221 to rotate simultaneously, and the rotation directions of the first tooth ring 212 and the second tooth ring 221 are opposite.

[0056] A 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, and it drives the ratchet assembly 300 to move to either the first or the second position. When the ratchet assembly 300 moves to the first position, the spindle 400 is rotated, and the drive head 211 rotates clockwise. When the ratchet assembly 300 moves to the second position, the spindle 400 is rotated, and the drive head 211 rotates counterclockwise. For example, when the ratchet assembly 300 moves to the first position, the spindle 400 is rotated clockwise. The spindle 400 drives the first toothed ring 212 to rotate clockwise, and at the same time drives the second toothed ring 221 to rotate counterclockwise. When the ratchet assembly is in the first position, the first toothed ring 212 rotates clockwise, and the second toothed ring 221 rotates counterclockwise. The first ratchet group is locked 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, which drives the rotating seat 200 to rotate clockwise, that is, the drive head 211 rotates clockwise. When the ratchet assembly 300 moves to the second position, the spindle 400 rotates clockwise. The spindle 400 drives the first toothed ring 212 to rotate clockwise, and at the same time drives the second toothed ring 221 to rotate counterclockwise. When the ratchet assembly is in the second position, 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 rotates freely relative to the first toothed ring 212). The second ratchet group is locked with the second toothed ring 221. At this time, the second toothed ring 221 drives the second ratchet group, which drives the rotating seat 200 to rotate counterclockwise, that is, the drive head 211 rotates counterclockwise.

[0057] The ratchet wrench provided in this embodiment can rotate the spindle 400 to drive the drive head 211 to rotate, thereby disassembling and assembling 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 casing 100 left and right (in the direction of rotation of the drive head 211). For example, taking the clockwise rotation of the drive head 211 to tighten a bolt as an example, in the process of tightening a bolt using the ratchet wrench, the bolt is usually tightened first by rotating the spindle 400. When a larger tightening force is required at the end, the ratchet wrench is swung left and right to tighten the bolt. That is, in the initial stage of tightening the bolt, the bolt is tightened by rotating the spindle 400, and then the outer casing 100 is swung in the direction of clockwise rotation of the drive head 211 to tighten the bolt. When the outer casing 100 is swung clockwise along the direction of the drive head 211, the first ratchet set 310 engages with the first toothed ring 212, and the second ratchet set 320 and the second toothed ring 221 are engaged. That is, the positions of the rotating seat 200, the first toothed ring 212, and the second toothed ring 221 are relatively fixed. The rotating seat 200 oscillates with the oscillation of the spindle 400 and the outer casing 100. In other words, when the wrench outer casing 100 is swung clockwise along the direction of the drive head 211, the ratchet wrench can tighten the bolt. When the outer casing 100 is swung counterclockwise along the direction of the drive head 211, the first ratchet set 310 engages with the first toothed ring 212. The first toothed ring 212 rotates freely, and the second ratchet group 320 rotates freely relative to the second toothed ring 221. That is, when the outer shell 100 swings in the direction of counterclockwise rotation of the drive head 211, the outer shell 100, the spindle 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 is stationary, and the outer shell 100 swings in the direction of counterclockwise rotation of the drive head 211. Thus, the ratchet wrench can tighten the bolt when it swings in the direction of clockwise rotation of the drive head 211, while swinging in the direction of counterclockwise rotation of the drive head 211 is free rotation, which facilitates the bolt tightening operation.

[0058] Similarly, when disassembling fasteners by rotating the drive head 211 counterclockwise, the same applies. Taking the counterclockwise rotation of the drive head 211 to disassemble a bolt as an example, the bolt can be loosened by swinging it in the direction of counterclockwise rotation of the drive head 211 at the beginning of disassembling the bolt. Swinging it in the direction of clockwise rotation of the drive head 211 is just spinning. After the bolt is loosened, the spindle 400 is rotated to drive the drive head 211 to rotate counterclockwise, thereby removing the bolt.

[0059] The first rotating seat 210, first toothed ring 212, first ratchet set 310, second rotating seat 220, second toothed ring 221, second ratchet set 320, and reversing mechanism 500 of the lightweight ratchet wrench provided in this application embodiment are all independent small parts. When the ratchet wrench malfunctions, the damaged parts can be replaced individually, thereby reducing the maintenance cost of the ratchet wrench and extending the overall service life of the ratchet wrench.

[0060] like Figure 5 As shown, in some embodiments of this application, the second rotating seat 220 includes a second mounting portion 227 and a second blocking portion 226 connected to each other. The second mounting portion 227 is configured to pivotally mount the second ratchet assembly 320 and sleeve the second toothed ring 221. The second blocking portion 226 is located on the side of the second mounting portion 227 near the upper opening 140 of the receiving hole 120. The second blocking portion 226 prevents the second toothed ring 221 from sliding out of the second mounting portion 227. 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, the second ratchet assembly 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 sleeve end of the second mounting portion 227. The second blocking portion 226 prevents the second toothed ring 221 from disengaging from the second mounting portion 227. The second blocking portion 226 is provided on the side of the upper opening 140 of the receiving hole 120. The second blocking portion 226 can serve as a blocking portion for the second toothed ring 221, and can also serve as an end cap for the upper opening 140 of the receiving hole 120, sealing the upper opening 140 of the receiving hole 120.

[0061] For example, such as Figure 4 As 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 a first ratchet assembly 310 and sleeve a first toothed ring 212. The first blocking portion 218 is located on the side of the first mounting portion 219 near the lower opening of the receiving hole 120, and the first blocking portion 218 prevents the first toothed ring 212 from sliding out of the first mounting portion 219. That is, the first ratchet assembly 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 prevents the first toothed ring 212 from disengaging from the first mounting portion 219. The first blocking portion 218 is located on the lower opening side of the receiving hole 120. The first blocking portion 218 can serve as a blocking portion for the first toothed ring 212 and can also serve as an end cap for the lower opening of the receiving hole 120, sealing the lower opening of the receiving hole 120.

[0062] For example, the upper opening 140 end and the lower opening end of the receiving hole 120 can be provided with annular grooves. The first blocking part 218 is placed in the annular groove at the lower opening end and can rotate in the annular groove at the lower opening end. The second blocking part 226 is placed in the annular groove at the upper opening 140 end and can rotate in the annular groove at the upper opening 140 end. The first rotating seat 210 and the second rotating seat 220 are connected by a connector 230, thereby the first blocking part 218 covers the lower opening and the second blocking part 226 covers the upper opening 140. There is a gap between the first toothed ring 212 and the second toothed ring 221. The third end tooth 410 of the spindle 400 extends into the space between the first end tooth 213 and the second end tooth 222. For example, in addition to being installed in the annular groove as described above, the first rotating seat 210 and the second rotating seat 220 can also be installed by providing an inner protruding ring 130 on the inner sidewall of the receiving hole 120. The inner protruding ring 130 is located between the first toothed ring 212 and the second toothed ring 221. The inner protruding ring 130 cooperates with the first blocking part 218, the first toothed ring 212, the second blocking part 226, the second toothed 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. See the following for details.

[0063] For example, such as Figure 2 , Figure 4 and Figure 5As shown, connector 230 is a threaded connector 230 (the thread of connector 230 is not shown in the figure). 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 connector 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 connector 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. In other words, the first connecting hole 217 and the second connecting hole 225 can be configured such that the first connecting hole 217 is a through hole and the second connecting hole 225 has an internal thread. 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 has an internal thread, the connection between the first rotating seat 210 and the second rotating seat 220 is achieved by the threaded connector 230 passing through the first connecting hole 217, extending into the second connecting hole 225, and threadedly connecting with the second connecting hole 225. When the second connecting hole 225 is a through hole and the first connecting hole 217 has an internal thread, the connection between the first rotating seat 210 and the second rotating seat 220 is achieved by the threaded connector 230 passing through the second connecting hole 225, extending into the first connecting hole 217, and threadedly connecting with the first connecting hole 217. Connecting the first rotating seat 210 and the second rotating seat 220 through the threaded connector 230 facilitates the assembly and disassembly of the first rotating seat 210 and the second rotating seat 220.

[0064] In some embodiments of this application, the ratchet wrench further includes an electric drive mechanism connected to the spindle 400, which drives the spindle 400 to rotate. That is, when disassembling fasteners, the ratchet wrench provided in this application embodiment allows users to first loosen the fastener by swinging it left and right, and then loosen it by rotating the spindle 400 via the electric drive mechanism. Similarly, when installing fasteners, users can first install the fastener by rotating the spindle 400 via the electric drive mechanism, and then tighten it by swinging the ratchet wrench left and right. This design makes fastener installation and removal more convenient, saving time and effort for users.

[0065] like Figure 2 and Figure 3As shown, to reduce damage to the third end tooth 410, the first toothed ring 212, the second toothed ring 221, and the ratchet assembly 300 when using a ratchet wrench to wiggle fasteners, a third inner ring tooth 131 is provided on the inner sidewall of the receiving hole 120. The ratchet assembly 300 also includes a third ratchet group 330, which is pivotally mounted on the first rotating seat 210 and / or the second rotating seat 220 and engages with the third inner ring tooth 131. That is, the third ratchet group 330 can be pivotally mounted on the first rotating seat 210, or on the second rotating seat 220, or on the integral structure formed by the first rotating seat 210 and the second rotating seat 220, for example, as shown in... Figure 2 As shown, the third ratchet set 330 is pivotally mounted at the joint of the first rotating seat 210 and the second rotating seat 220. The engagement of the third inner ring tooth 131 and the third ratchet set 330 is similar to that of the first inner ring tooth 214 and the first ratchet set 310, as well as the second inner ring tooth 223 and the second ratchet set 320. Taking the clockwise rotation of the spindle 400 as an example, when the ratchet assembly 300 is in the first position, rotating the spindle 400 clockwise causes the third ratchet set 330 to rotate clockwise with the rotating seat 200. The third ratchet set 330 idles relative to the third inner ring tooth 131. During the clockwise rotation along the drive head 211... When the outer casing 100 swings in a direction, the third ratchet set 330 engages with the third inner ring tooth 131. At this time, the engagement of the third inner ring tooth and the third ratchet set 330 can reduce the deformation of the first tooth ring 212, the second tooth ring 221 and the third end tooth 410, and reduce the cost of replacing the first tooth ring 212, the second tooth ring 221 and the spindle 400. When the outer casing 100 swings in the direction of counterclockwise rotation of the drive head 211, the third ratchet set 330 idles relative to the third inner ring tooth 131. Similarly, when the ratchet assembly 300 is in the second position, the spindle 400 is rotated clockwise, and the third ratchet group 330 rotates counterclockwise with the rotating seat 200. The third ratchet group 330 idles relative to the third inner ring tooth 131. When the outer shell 100 is swung counterclockwise along the direction of the drive head 211, the third ratchet group 330 is locked with the third inner ring tooth 131. At this time, the locking engagement of the third inner ring tooth 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 tooth 410, and reduce the cost of replacing the first tooth ring 212, the second tooth ring 221 and the spindle 400. When the outer shell 100 is swung clockwise along the direction of the drive head 211, the third ratchet group 330 idles relative to the third inner ring tooth 131. In other words, the arrangement of the third internal 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 tooth 410, and reduce the cost of replacing the first tooth ring 212, the second tooth ring 221 and the mandrel 400.

[0066] For example, to facilitate the assembly and disassembly of the rotating seat 200 and the ratchet assembly 300, the inner wall of the receiving hole 120 is provided with an inner convex ring 130, and the inner wall of the inner convex ring 130 is provided with a third inner ring tooth 131. Part of the first rotating seat 210 and / or part of the second rotating seat 220 extend into the inner convex ring 130. That is, when the third ratchet assembly 330 is pivotally mounted on the first rotating seat 210, part of the first rotating seat 210 extends into the inner convex ring 130; when the third ratchet assembly 330 is pivotally mounted on the second rotating seat 220, part of the second rotating seat 220 extends into the inner convex ring 130; when the third ratchet assembly 330 is pivotally mounted 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. For example, in this embodiment, the third ratchet group 330 is pivotally mounted on the first rotating seat 210 and the second rotating seat 220, and a portion of the first rotating seat 210 and a portion of the second rotating seat 220 extend into the inner convex ring 130.

[0067] In order for the inner convex ring 130 to cooperate with the first blocking portion 218 to define the position of the first toothed ring 212, and 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, 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. Therefore, during installation of the rotating seat 200 and the ratchet assembly 300, the first ratchet assembly 310 is pivotally mounted on the first rotating seat 210, the first toothed ring 212 is fitted onto the first rotating seat 210, and the first rotating seat 210 is inserted into the receiving hole 120 through the lower opening. At this time, the first blocking part 218 of the first rotating seat 210 covers the lower opening, and the first toothed ring 212 is positioned between the first blocking part 218 and the inner convex ring 130. Similarly, the second ratchet assembly 320 is pivotally mounted on the second rotating seat 220, the second toothed ring 221 is fitted onto the second rotating seat 220, and the second rotating seat 220 is inserted into the receiving hole 120 through the upper opening 140. The second rotating seat 220 is placed in the receiving hole 120. At this time, the second blocking part 226 of the second rotating seat 220 covers the opening 140, and the second toothed ring 221 is placed between the second blocking part 226 and the inner convex ring 130. The third ratchet assembly 330 is installed 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 receiving hole 120, the first rotating seat 210 and the second rotating seat 220 are connected by the connector 230, thereby installing the rotating seat 200, the first toothed ring 212, the second toothed ring 221 and the ratchet assembly 300 in the receiving hole 120. This installation method facilitates the disassembly and assembly of the ratchet wrench.

[0068] like Figure 2As shown, in some embodiments of this application, the third ratchet group 330 is provided with a ratchet, the inner circle of the inner convex ring 130 is a complete circle, the inner convex ring 130 is provided with a relief groove 132 corresponding to the extension end of the mandrel 400, and the third end tooth 410 of the mandrel 400 extends into the relief groove 132. In this embodiment, the clearance slot 132 does not penetrate the inner and outer rings of the inner convex ring 130. As a result, a full circle of the third inner ring teeth 131 can be provided on the inner sidewall of the inner convex ring 130. This prevents the third ratchet assembly 330 from disengaging from the third inner ring teeth, ensuring the stability of the ratchet wrench and avoiding the situation where the third end teeth 410, the first tooth ring 212, the second tooth ring 221, and the ratchet assembly 300 are subjected to increased force due to the third ratchet assembly 330 disengaging from the third inner ring teeth. This reduces the deformation of the first tooth ring 212, the second tooth ring 221, and the third end teeth 410, and reduces the cost of replacing the first tooth ring 212, the second tooth ring 221, and the spindle 400.

[0069] like Figure 2 , Figure 4 and Figure 5 As shown, in some embodiments of this application, the first ratchet set 310 and the second ratchet set 320 each have one ratchet tooth. The first rotating seat 210 has a first groove 215 configured to mount the ratchet tooth of the first ratchet set 310. The second rotating seat 220 has a second groove 224 configured to mount the ratchet tooth of the second ratchet set 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 have a third groove 216 configured to mount the ratchet tooth of the third ratchet set 330. The third groove 216 and the first groove 215 are located on opposite sides. This arrangement can reduce the overall volume of the ratchet wrench head, making the ratchet wrench more compact and refined in appearance. The third groove 216 is provided on the first rotating seat 210 and / or the second rotating seat 220. Specifically, the third groove 216 is provided on the first rotating seat 210, or on the second rotating seat 220, or both the first and second rotating seats 210 and 220 have the third groove 216. When the third groove 216 is provided on the first rotating seat 210, the third ratchet set 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 set 330 is installed on both the first and second rotating seats 210 and 220. For example, in this embodiment, the third groove 216 is located at the mating point of the first rotating seat 210 and the second rotating seat 220, and the third ratchet set 330 is installed on both the first and second rotating seats 210.

[0070] For example, the first ratchet set 310 and the second ratchet set 320 are pivotally mounted on the first rotating seat 210 and the second rotating seat 220 respectively via the first pivot 340, and the third ratchet set 330 is pivotally mounted on the first rotating seat 210 and the second rotating seat 220 via the second pivot 350.

[0071] like Figure 2 As shown, in some embodiments of this application, the reversing mechanism 500 includes a reversing lever 510, and a first spring abutment 520, a second spring abutment 530, and a third spring abutment 540 mounted on the reversing lever 510. The first spring abutment 520 abuts against the first ratchet set 310, causing the first ratchet set 310 to change position. The second spring abutment 530 abuts against the second ratchet set 320, causing the second ratchet set 320 to change position. The first spring abutment 520, the second spring abutment 530, and the third spring abutment 540 all include springs, which are not shown in the figure.

[0072] For example, the reversing lever 510 extends from the second rotating seat 220 into the second rotating seat 220 and the first rotating seat 210. In order to facilitate steering operation, a steering cover 600 is provided at the end of the reversing lever 510, and the steering cover 600 is fastened to the second blocking part 226.

[0073] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0074] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A light-weight ratchet wrench characterized by comprising: include: The outer casing has a receiving hole at its first end; A rotating seat is installed in the receiving hole. The rotating seat includes a first rotating seat and a second rotating seat, which are detachably connected by a connector. The first rotating seat is provided with a driving head that extends out of the receiving hole. A first toothed ring is sleeved on the side of the first rotating seat opposite to the driving head. The first toothed ring can rotate around the first rotating seat and includes a first end tooth and a first inner ring tooth. A second toothed ring is sleeved on the second rotating seat and can rotate around the second rotating seat. The second toothed ring includes a second end tooth and a second inner ring tooth, with the second end tooth opposite to the first end tooth. A ratchet assembly, comprising a first ratchet group and a second ratchet group, wherein the first ratchet group is pivotally mounted on the first rotating seat and meshes with the first inner ring tooth, and the second ratchet group is pivotally mounted on the second rotating seat and meshes with the second inner ring tooth; A mandrel, one end of which is provided with a third end tooth, is placed inside the outer casing, the third end tooth extends between the first end tooth and the second end tooth, and the third end tooth meshes with the first end tooth and the second end tooth respectively; A reversing mechanism is inserted into the first rotating seat and the second rotating seat. The reversing mechanism is configured to rotate, thereby driving the ratchet assembly to move to a first position or a second position. When the ratchet assembly moves to the first position, the spindle is rotated, and the drive head rotates clockwise. When the ratchet assembly moves to the second position, the spindle is rotated, and the drive head rotates counterclockwise.

2. The compact ratchet wrench according to claim 1, wherein 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 assembly and sleeve the second toothed ring. The second blocking portion is located on the side of the second mounting portion near the upper opening of the receiving hole, and the second blocking portion prevents the second toothed ring from sliding out of the second mounting portion.

3. The compact ratchet wrench according to claim 2, wherein 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 assembly and sleeve the first toothed ring. The first blocking portion is located on the side of the first mounting portion near the lower opening of the receiving hole, and the first blocking portion prevents the first toothed ring from sliding out of the first mounting portion.

4. The compact ratchet wrench of claim 1, wherein The connector is a threaded connector; The first rotating seat is provided with a first connecting hole along the first axis, and the second rotating seat is provided with a second connecting hole corresponding to the first connecting hole. The first axis is the axis of rotation of the driving head. The threaded connector passes through the first connecting hole, extends into the second connecting hole, and is threadedly connected to the second connecting hole; or, the threaded connector passes through the second connecting hole, extends into the first connecting hole, and is threadedly connected to the first connecting hole.

5. The compact ratchet wrench of claim 1, wherein The ratchet wrench also includes an electric drive mechanism connected to the spindle, which drives the spindle to rotate.

6. The compact ratchet wrench according to any one of claims 1 to 5, wherein The inner sidewall of the accommodating hole is provided with a third inner ring tooth; The ratchet assembly further includes 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 tooth.

7. The compact ratchet wrench of claim 6 wherein, The inner sidewall of the receiving hole is provided with an inner convex ring, and the inner sidewall of the inner convex ring is provided with the third inner ring tooth; 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.

8. The compact ratchet wrench of claim 7 wherein, The third ratchet group has one ratchet tooth; The inner circle of the inner convex ring is a complete circle, and the inner convex ring is provided with a relief groove corresponding to the insertion end of the mandrel. The third end tooth of the mandrel extends into the relief groove.

9. The compact ratchet wrench of claim 8 wherein, Both the first ratchet group and the second ratchet group have one ratchet tooth; The first rotating seat is provided with a first groove, which is configured to install the ratchet teeth of the first ratchet set; the second rotating seat is provided with a second groove, which is configured to install the ratchet teeth of the second ratchet set; the first groove and the second groove are located on the same side. The first rotating seat and / or the second rotating seat are provided with a third groove, the third groove being configured to install the ratchet teeth of the third ratchet set, and the third groove being located on the opposite side of the first groove.

10. The compact ratchet wrench of claim 6 wherein, The reversing mechanism includes a reversing rod, and a first spring abutment, a second spring abutment, and a third spring abutment mounted on the reversing rod. The first spring abutment abuts against the first ratchet group, causing the first ratchet group to change position. The second spring abutment abuts against the second ratchet group, causing the second ratchet group to change position.

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