Ratchet wrench

Abstract

The utility model provides a ratchet wrench which comprises a wrench outer shell, a rotating mechanism, a third gear ring, a mandrel and a steering mechanism, the rotating mechanism comprises a rotating seat, a first gear ring, a second gear ring and a ratchet block set, the first gear ring and the second gear ring are arranged on the rotating seat in a sleeving mode, the ratchet block set is matched with the first gear ring and the second gear ring, and the ratchet block set is further matched with the third gear ring. The third gear ring is detachably installed in the wrench outer shell, the wrench outer shell and the third gear ring are matched to fix the position, around the first axial direction, of the third gear ring, the steering mechanism is installed on the rotating base, and the steering mechanism can push the ratchet block set to the first position or the second position. Third end teeth located at the end of the mandrel are meshed with the first gear ring and the second gear ring respectively. All parts of the ratchet wrench are mutually independent, so that the ratchet wrench is convenient to assemble, overhaul and replace.

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 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. Utility Model Content

[0005] The embodiment of the present application provides a 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:

[0007] The present application provides a ratchet wrench, comprising:

[0008] A wrench outer shell, the wrench outer shell having a first end and a second end opposite to each other, the first end being provided with a receiving hole;

[0009] A rotating mechanism, wherein the rotating mechanism is installed in the accommodating hole, and the rotating mechanism can rotate around a first axial direction in the accommodating hole, and the rotating mechanism comprises a rotating seat, a ratchet block group, a first gear ring and a second gear ring; the ratchet block group is pivotally arranged on the rotating seat; the first gear ring and the second gear ring are respectively sleeved on the two ends of the rotating seat in the first axial direction, the first gear ring has a first inner ring ratchet tooth and a first end tooth, the second gear ring has a second inner ring ratchet tooth and a second end tooth, the first inner ring ratchet tooth and the second inner ring ratchet tooth are respectively meshed with the ratchet block group; the end surface of one end of the rotating seat where the first gear ring is arranged is provided with a driving head, and the driving head is located outside the accommodating hole; a spindle, one end of the spindle is provided with a third end tooth, the spindle is placed in the outer shell of the wrench, the third end tooth extends between the first end tooth and the second end tooth, and the third end tooth is respectively meshed with the first end tooth and the second end tooth;

[0010] A steering mechanism, wherein the steering mechanism is installed on the rotating seat, and the steering mechanism can push the ratchet block group to move to the first position or the second position; when the ratchet block group moves to the first position, the core shaft is rotated, the drive head rotates clockwise, and the wrench outer shell is swung in the direction of the counterclockwise rotation of the drive head, and the ratchet block group is idle relative to the first gear ring and the second gear ring; when the ratchet block group moves to the second position, the core shaft is rotated, the drive head rotates counterclockwise, and the wrench outer shell is swung in the direction of the clockwise rotation of the drive head, and the ratchet block group is idle relative to the first gear ring and the second gear ring.

[0011] The beneficial effects of the embodiments of the present application: the ratchet wrench provided in the embodiments of the present application includes a wrench outer shell, a rotating mechanism, a core shaft and a steering mechanism, the rotating mechanism includes a rotating seat, a first gear ring and a second gear ring mounted on the rotating seat, and a ratchet block group cooperating with the first gear ring and the second gear ring. When assembling the ratchet wrench, the rotating mechanism and the steering mechanism can be assembled first, and then installed into the wrench outer shell, which is convenient to assemble, and the steering mechanism and the rotating seat, the first gear ring, the second gear ring and the ratchet block group in the rotating mechanism are all independent small parts. When the ratchet wrench fails, the damaged parts can be replaced individually, thereby extending the overall service life of the ratchet wrench.

[0012] In a possible implementation manner, the inner wall of the accommodating hole is provided with a first limiting structure;

[0013] The ratchet wrench further comprises a third toothed ring, the third toothed ring having an opening, the third toothed ring being sleeved on the rotating seat and being arranged between the first toothed ring and the second toothed ring, the third toothed ring having third inner ring ratchet teeth, the third inner ring ratchet teeth being meshed with the ratchet block group; the third toothed ring is provided with a second limiting structure, the second limiting structure cooperates with the first limiting structure to fix the position of the third toothed ring in a direction around the first axial direction;

[0014] The third end tooth extends into the opening;

[0015] When the ratchet block group moves to the first position, the wrench outer shell is swung in the counterclockwise rotation direction of the drive head, and the ratchet block group idles relative to the third gear ring; when the ratchet block group moves to the second position, the wrench outer shell is swung in the clockwise rotation direction of the drive head, and the ratchet block group idles relative to the third gear ring.

[0016] In the process of tightening a bolt with a ratchet wrench, the bolt is usually first turned by rotating the core shaft. When a larger tightening force is needed at the end, the ratchet wrench is swung left and right (in the direction of rotation of the drive head) to tighten the bolt. In the process of loosening the bolt with a ratchet wrench, a larger force is required when loosening the bolt at the beginning. Usually, the bolt is loosened by swinging the ratchet wrench left and right (in the direction of rotation of the drive head) first, and then the bolt is removed by rotating the core shaft. Therefore, when the bolt is tightened at the end of tightening the bolt or loosened at the beginning of removing the bolt by swinging the ratchet wrench left and right (in the direction of rotation of the drive head), the ratchet block group, the first gear ring, the second gear ring and the third end teeth are subjected to a large force, which can easily cause the first gear ring, the second gear ring and the third end teeth to deform, affecting the use of the ratchet wrench. The three-tooth ring cooperates with the ratchet block group, and the third tooth ring is detachably installed in the wrench outer shell, and the wrench outer shell and the third tooth ring cooperate to fix the position of the third tooth ring in the direction around the first axial direction. When the ratchet wrench tightens the bolt at the end of tightening the bolt or loosens the bolt at the beginning of removing the bolt by swinging left and right (along the direction of rotation of the drive head), most of the force for tightening the bolt or loosening the bolt is shared by the third gear and the ratchet block group, thereby greatly reducing the deformation of the first tooth ring, the second tooth ring and the third end teeth, and reducing the cost of replacing the first tooth ring, the second tooth ring and the core shaft. The third tooth ring is detachably installed in the wrench outer shell, and when the third tooth ring is damaged, it can be replaced in time. Compared with replacing the first tooth ring, the second tooth ring and the core shaft, the cost of replacing the third tooth ring is lower, which greatly reduces the maintenance cost of the ratchet wrench and facilitates the maintenance of the ratchet wrench.

[0017] In a possible implementation, the accommodating hole has a first opening end and a second opening end, and the inner wall of the accommodating hole is provided with at least one limiting groove, one end of each limiting groove in the length direction is connected with the first opening end, and each limiting groove forms the first limiting structure;

[0018] The outer side wall of the third gear ring is provided with at least one limiting protrusion, and the number of the limiting protrusions is the same as the number of the limiting grooves and corresponds one to one; in the corresponding limiting protrusions and limiting grooves, the limiting protrusions are inserted into the limiting grooves, and each limiting protrusion forms the second limiting structure.

[0019] In a possible implementation, the number of the limiting grooves is two, and the length direction of each limiting groove extends in the first axial direction.

[0020] In a possible implementation, the rotating seat includes a first mounting portion, a second mounting portion, and a connecting portion located between the first mounting portion and the second mounting portion, the first mounting portion and the second mounting portion are located at two ends of the rotating seat in the first axial direction, an end of the connecting portion connected to the first mounting portion at least partially protrudes from the first mounting portion, and an end of the connecting portion connected to the second mounting portion at least partially protrudes from the second mounting portion;

[0021] The first mounting portion is provided with a first annular groove, a first buckle ring is detachably mounted in the first annular groove, and the first toothed ring is mounted between the first buckle ring and a portion of the connecting portion protruding from the first mounting portion;

[0022] The second mounting portion is provided with a second annular groove, a second buckle ring is detachably mounted in the second annular groove, and the second toothed ring is mounted between the second buckle ring and a portion of the connecting portion protruding from the second mounting portion.

[0023] In a possible implementation manner, the connecting portion is provided with a first notch, a second notch, a third notch and a fourth notch, the first notch and the third notch are located on the same side, and the second notch and the fourth notch are located on the same side;

[0024] The ratchet block group includes two first ratchet blocks and two second ratchet blocks, the two first ratchet blocks are pivoted to the first notch and the second notch, and the two first ratchet blocks are respectively engaged with the first inner ring ratchet teeth, and the two first ratchet blocks are respectively engaged with the third inner ring ratchet teeth; the two second ratchet blocks are pivoted to the third notch and the fourth notch, and the two second ratchet blocks are respectively engaged with the second inner ring ratchet teeth, and the two second ratchet blocks are respectively engaged with the third inner ring ratchet teeth.

[0025] In a possible implementation manner, the first notch and the third notch are separated by a first spacing plate, and the second notch and the fourth notch are separated by a second spacing plate;

[0026] The rotating seat also includes a first pivot and a second pivot, the first pivot pivots the first ratchet block and the second ratchet block in the first notch and the third notch, and the second pivot pivots another first ratchet block and another second ratchet block in the second notch and the fourth notch.

[0027] In a possible implementation, the receiving hole has a first opening end and a second opening end;

[0028] The steering mechanism comprises a rotating cover, a rotating member, a first elastic member and a second elastic member;

[0029] The rotating member is rotatably extended into the rotating seat, and the rotating member has a first mounting hole and a second mounting hole;

[0030] The first elastic member passes through the first mounting hole, and two ends of the first elastic member extend out of the first mounting hole and respectively abut against the two first ratchet blocks;

[0031] The second elastic abutment member passes through the second mounting hole, and two ends of the second elastic abutment member extend out of the second mounting hole and respectively abut against the two second ratchet blocks;

[0032] The rotating cover is buckled on the first opening end, and the rotating cover is assembled with one end of the rotating member. Rotating the rotating cover can drive the rotating member to rotate, and the rotation of the rotating member drives the first elastic member and the second elastic member to rotate, and the first elastic member and the second elastic member push the ratchet block group to move to the first position or the second position.

[0033] In a possible implementation, the first elastic member includes a first spring and first push beads disposed on both sides of the first spring, and the second elastic member includes a second spring and second push beads disposed on both sides of the second spring.

[0034] In a possible implementation manner, the accommodating hole has a first opening end and a second opening end, and the second opening end is provided with a blocking edge extending into the accommodating hole;

[0035] The first mounting portion located between the first buckle ring and the driving head is placed in the opening enclosed by the retaining edge and blocks the opening enclosed by the retaining edge;

[0036] The first buckle ring is pressed tightly between the first gear ring and the abutting edge.

[0037] In a possible implementation, the ratchet wrench further includes an electric drive mechanism, which is connected to the spindle and drives the spindle to rotate.

[0038] In addition to the technical problems solved by the present application, the technical features that constitute the technical solution, and the beneficial effects brought about by the technical features of the technical solution described above, other technical problems that can be solved by the ratchet wrench provided by the present application, other technical features included in the technical solution, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0040] Figure 1 A schematic diagram of a ratchet wrench according to an embodiment of the present application;

[0041] Figure 2 This is an exploded schematic diagram of a ratchet wrench according to an embodiment of the present application;

[0042] Figure 3 It is a partial explosion diagram of the ratchet wrench of the embodiment of the present application;

[0043] Figure 4 is a schematic diagram of a first gear ring according to an embodiment of the present application;

[0044] Figure 5 This is a schematic diagram of the outer shell of a wrench according to an embodiment of the present application;

[0045] Figure 6 is a schematic diagram of a third gear ring according to an embodiment of the present application;

[0046] Figure 7 It is a schematic diagram of a rotating seat according to an embodiment of the present application.

[0047] Description of reference numerals:

[0048] 100. Wrench housing;

[0049] 110, first end; 120, second end; 130, receiving hole; 140, limiting groove; 150, first opening end; 160, second opening end; 170, blocking edge;

[0050] 200, rotating mechanism;

[0051] 210, rotating seat; 220, ratchet block group; 230, first gear ring; 240, second gear ring; 250, driving head;

[0052] 211, first mounting portion; 212, second mounting portion; 213, connecting portion; 214, first pivot; 215, second pivot; 216, first buckle; 217, second buckle;

[0053] 2111, first annular groove; 2112, second annular groove;

[0054] 2131, first notch; 2132, second notch; 2133, third notch; 2134, fourth notch; 2135, first partition board; 2136, second partition board;

[0055] 221, first ratchet block; 222, second ratchet block;

[0056] 231, first inner ring ratchet tooth; 232, first end tooth;

[0057] 241, second inner ring ratchet teeth; 242, second end teeth;

[0058] 300, third gear ring;

[0059] 310, third inner ring ratchet teeth; 320, limiting convex;

[0060] 400, mandrel;

[0061] 410, third end tooth;

[0062] 500, steering mechanism;

[0063] 510, rotating cover; 520, rotating member; 530, first push bead; 540, second push bead;

[0064] 600, pressing piece;

[0065] L1, first axial direction.

[0066] 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

[0067] 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.

[0068] like Figure 1 and Figure 2 As shown, the ratchet wrench provided in this embodiment includes a wrench outer shell 100, a rotating mechanism 200, a third gear ring 300, a spindle 400 and a steering mechanism 500. The wrench outer shell 100 has a first end 110 and a second end 120 opposite to each other, and the first end 110 is provided with a receiving hole 130.

[0069] like Figure 1 , Figure 2 and Figure 4As shown, the rotating mechanism 200 is installed in the accommodating hole 130, and the rotating mechanism 200 can rotate around the first axial direction L1 in the accommodating hole 130. The rotating mechanism 200 includes a rotating seat 210, a ratchet block group 220, a first gear ring 230 and a second gear ring 240. The ratchet block group 220 is pivoted on the rotating seat 210. The first gear ring 230 and the second gear ring 240 are respectively sleeved on both ends of the rotating seat 210 on the first axial direction L1. The first gear ring 230 has a first inner ring ratchet tooth 231 and first end teeth 232, the second gear ring 240 has second inner ring ratchet teeth 241 and second end teeth 242, the first inner ring ratchet teeth 231 and the second inner ring ratchet teeth 241 are respectively meshed with the ratchet block group 220, when the ratchet block group 220 is idling on the first inner ring ratchet teeth 231, the first gear ring 230 can rotate around the rotating seat 210, similarly, when the ratchet block group 220 is idling on the second inner ring ratchet teeth 241, the second gear ring 240 can rotate around the rotating seat 210. The end surface of one end of the rotating seat 210 where the first gear ring 230 is arranged is provided with a drive head 250, and the drive head 250 is located outside the accommodating hole 130. Exemplarily, the drive head 250 is a square head, and the drive head 250 can be detachably connected to the sleeve. Figure 2 and Figure 3 As shown, a third end tooth 410 is provided at one end of the core shaft 400, and the core shaft 400 is placed in the wrench outer shell 100. The third end tooth 410 extends between the first end tooth 232 and the second end tooth 242, and the third end tooth 410 is respectively engaged with the first end tooth 232 and the second end tooth 242. The core shaft 400 rotates, driving the first gear ring 230 and the second gear ring 240 to rotate. The rotation directions of the first gear ring 230 and the second gear ring 240 are opposite. At this time, the ratchet block group 220 is clamped to one of the first gear ring 230 and the second gear ring 240, and slides over the other gear ring (that is, the ratchet block group 220 rotates idly relative to the gear ring). As a result, the ratchet block group 220 rotates in the same direction as the gear ring clamped thereto, thereby driving the rotating seat 210 to rotate, and the drive head 250 rotates with the rotating seat 210.

[0070] In this embodiment, if Figure 2 and Figure 3As shown, the steering mechanism 500 is installed on the rotating seat 210, and the steering mechanism 500 can push the ratchet block set 220 to move to the first position or the second position. When the ratchet block group 220 moves to the first position, the core shaft 400 is rotated, the drive head 250 rotates clockwise, and the wrench outer shell 100 is swung in the direction of the clockwise rotation of the drive head 250. The ratchet block group 220 is fixed to the first gear ring 230 and the second gear ring 240. The wrench outer shell 100 is swung in the counterclockwise rotation direction of the drive head 250, and the ratchet block group 220 is idle relative to the first gear ring 230 and the second gear ring 240; when the ratchet block group 220 moves to the second position, the core shaft 400 is rotated, the drive head 250 rotates counterclockwise, and the wrench outer shell 100 is swung in the direction of the counterclockwise rotation of the drive head 250. The ratchet block group 220 is fixed to the first gear ring 230 and the second gear ring 240. The wrench outer shell 100 is swung in the clockwise rotation direction of the drive head 250, and the ratchet block group 220 is idle relative to the first gear ring 230 and the second gear ring 240.

[0071] Exemplarily, when the ratchet block group 220 is in the first position, the core shaft 400 is rotated clockwise, and the rotation of the core shaft 400 drives the first gear ring 230 to rotate clockwise, and the second gear ring 240 to rotate counterclockwise. At this time, the ratchet block group 220 is fixed to the first gear ring 230 and slides over the second gear ring 240 (that is, the ratchet block group 220 idles relative to the second gear ring 240). As a result, the ratchet block group 220 rotates in the same direction as the first gear ring 230, thereby driving the rotating seat 210 to rotate clockwise, thereby causing the drive head 250 to rotate clockwise. Taking the example of tightening the bolt by rotating the drive head 250 clockwise, when using a ratchet wrench to tighten the bolt, the bolt is usually tightened by rotating the core shaft 400 first. When a larger tightening force is needed at the end, the ratchet wrench is swung left and right (in the direction of rotation of the drive head 250) to tighten the bolt. That is to say, in the initial stage of tightening the bolt, the bolt is tightened by rotating the core shaft 400, and then the wrench housing 100 is swung along the clockwise direction of rotation of the drive head 250 to tighten the bolt. When the wrench outer shell 100 is swung in the direction of clockwise rotation of the drive head 250, the core shaft 400 moves with the wrench outer shell 100, and the first gear ring 230 and the second gear ring 240 are both engaged with the third end teeth 410. Therefore, the first gear ring 230 and the second gear ring 240 have a tendency to rotate clockwise around the rotating seat 210 driven by the core shaft 400, but at this time the ratchet block group 220 and the first gear ring 230 and the second gear ring 240 are all fixed, that is, the positions of the rotating seat 210 and the first gear ring 230 and the second gear ring 240 are relatively fixed, that is, the rotating seat 210 moves with the movement of the core shaft 400 and the wrench outer shell 100, that is, the wrench outer shell 100 is swung in the direction of clockwise rotation of the drive head 250. 0, the ratchet wrench can tighten the bolt; when the wrench housing 100 is swung in the counterclockwise direction of the drive head 250, the ratchet block group 220 is idling relative to the first gear ring 230 and the second gear ring 240, that is, when the wrench housing 100 is swung in the counterclockwise direction of the drive head 250, the wrench housing 100, the spindle 400, the first gear ring 230 and the second gear ring 240 rotate around the rotating seat 210. At this time, the drive head 250 is stationary, and the wrench housing 100 is swung in the counterclockwise direction of the drive head 250. Therefore, the ratchet wrench can tighten the bolt by swinging in the clockwise direction of the drive head 250, while swinging in the counterclockwise direction of the drive head 250 is idling.

[0072] Similarly, when the ratchet block group 220 is located at the second position, the mandrel 400 is rotated clockwise, and the rotation of the mandrel 400 drives the first gear ring 230 to rotate clockwise, and the second gear ring 240 to rotate counterclockwise. At this time, the ratchet block group 220 is fixed with the second gear ring 240, and slides over the first gear ring 230 (that is, the ratchet block group 220 rotates idly relative to the first gear ring 230). As a result, the ratchet block group 220 rotates in the same direction as the second gear ring 240, thereby driving the rotating seat 210 to rotate counterclockwise, thereby causing the drive head 250 to rotate counterclockwise. Taking the counterclockwise rotation of the drive head 250 to disassemble the bolt as an example, in the process of using a ratchet wrench to disassemble the bolt, it is usually firstly loosened by swinging the ratchet wrench left and right (along the direction of rotation of the drive head 250), and then the bolt is disassembled by rotating the mandrel 400. When the wrench housing 100 is swung in the counterclockwise direction of the drive head 250, the first gear ring 230 and the second gear ring 240 have a tendency to rotate counterclockwise around the rotating seat 210 under the drive of the spindle 400, but at this time the ratchet block group 220 and the first gear ring 230 and the second gear ring 240 are all fixed, so that the rotating seat 210 moves with the movement of the spindle 400 and the wrench housing 100, and then when the wrench housing 100 is swung in the counterclockwise direction of the drive head 250, the ratchet wrench can loosen the bolt; When the driving head 250 swings the wrench outer shell 100 in the clockwise direction, the ratchet block group 220 both idles relative to the first gear ring 230 and the second gear ring 240. That is to say, when the wrench outer shell 100 is swung in the clockwise direction of the driving head 250, the driving head 250 does not move, and the wrench outer shell 100 swings in the clockwise direction of the driving head 250. Therefore, the ratchet wrench can loosen the bolt by swinging in the counterclockwise direction of the driving head 250, while it is idle when it is swung in the clockwise direction of the driving head 250.

[0073] When assembling the ratchet wrench provided in the embodiment of the present application, the rotating mechanism 200 and the steering mechanism 500 can be assembled first, and then installed into the wrench outer shell 100. The assembly is convenient, and the steering mechanism 500 and the rotating seat 210, the first gear ring 230, the second gear ring 240 and the ratchet block group 220 in the rotating mechanism 200 are all independent small parts. When the ratchet wrench fails, the damaged parts can be replaced separately, thereby extending the overall service life of the ratchet wrench.

[0074] In the process of tightening a bolt with a ratchet wrench, the bolt is usually first tightened by rotating the spindle 400. When a larger tightening force is needed at the end, the ratchet wrench is swung left and right (along the direction of rotation of the drive head 250) to tighten the bolt. In the process of loosening a bolt with a ratchet wrench, a larger force is required at the beginning to loosen the bolt. The bolt is usually first loosened by swinging the ratchet wrench left and right (along the direction of rotation of the drive head 250), and then the bolt is removed by rotating the spindle 400. Therefore, when the bolt is tightened at the end of tightening the bolt or loosened at the beginning of removing the bolt by swinging the ratchet wrench left and right (along the direction of rotation of the drive head 250), the ratchet block group 220, the first gear ring 230, the second gear ring 240 and the third end teeth 410 are subjected to a larger force, which can easily cause the first gear ring 230, the second gear ring 240 and the third end teeth 410 to deform, affecting the use of the ratchet wrench. Figure 2 , Figure 3 and Figure 6 As shown, the ratchet wrench provided in the embodiment of the present application is also provided with a third gear ring 300 .

[0075] Please continue reading Figure 2 , Figure 3 and Figure 6 The third gear ring 300 has an opening, is sleeved on the rotating seat 210 , and is disposed between the first gear ring 230 and the second gear ring 240 . The third gear ring 300 has a third inner ring ratchet teeth 310 , and the third inner ring ratchet teeth 310 are engaged with the ratchet block set 220 .

[0076] In this embodiment, the inner wall of the accommodating hole 130 is provided with a first limiting structure, and the third gear ring 300 is provided with a second limiting structure. The second limiting structure cooperates with the first limiting structure to fix the position of the third gear ring 300 in the direction around the first axial direction L1. When the ratchet block group 220 moves to the first position, the wrench outer shell 100 is swung in the counterclockwise rotation direction of the drive head 250, and the ratchet block group 220 idles relative to the third gear ring 300; when the ratchet block group 220 moves to the second position, the wrench outer shell 100 is swung in the clockwise rotation direction of the drive head 250, and the ratchet block group 220 idles relative to the third gear ring 300. That is, the third gear ring 300 is mounted on the rotating seat 210 and is installed in the wrench outer shell 100 together with the rotating seat 210. The third gear ring 300 is detachably installed in the wrench outer shell 100, and the first limiting structure and the second limiting structure cooperate to limit the position of the third gear ring 300 in the direction around the first axial direction L1, so that it cannot move in the direction around the first axial direction L1. When the ratchet wrench is swung left and right (along the direction of rotation of the drive head 250) to tighten the bolt at the end of tightening the bolt or to loosen the bolt at the beginning of removing the bolt, most of the force for tightening the bolt or loosening the bolt is used. The load is shared by the third gear and the ratchet block group 220, thereby greatly reducing the deformation of the first gear ring 230, the second gear ring 240 and the third end tooth 410, and reducing the cost of replacing the first gear ring 230, the second gear ring 240 and the core shaft 400. The third gear ring 300 is detachably installed in the wrench outer shell 100. When the third gear ring 300 is damaged, it can be replaced in time. Compared with replacing the first gear ring 230, the second gear ring 240 and the core shaft 400, the cost of replacing the third gear ring 300 is lower, which greatly reduces the maintenance cost of the ratchet wrench and facilitates the maintenance of the ratchet wrench.

[0077] In some embodiments of the present application, Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, the receiving hole 130 has a first open end 150 and a second open end 160, and the inner wall of the receiving hole 130 is provided with at least one limiting groove 140, one end of each limiting groove 140 in the length direction is connected with the first open end 150, and each limiting groove 140 forms the above-mentioned first limiting structure. The outer wall of the third gear ring 300 is provided with at least one limiting protrusion 320, and the number of the limiting protrusions 320 is the same as the number of the limiting grooves 140 and corresponds one to one; in the corresponding limiting protrusions 320 and limiting grooves 140, the limiting protrusions 320 are inserted into the limiting grooves 140, and each limiting protrusion 320 forms the above-mentioned second limiting structure. That is, the limiting protrusions 320 and the limiting grooves 140 cooperate to limit the position of the third gear ring 300 in the direction around the first axial direction L1.

[0078] Exemplarily, there are two limiting grooves 140 , and the length direction of each limiting groove 140 extends in the first axial direction L1 .

[0079] like Figure 7 As shown, the rotating seat 210 includes a first mounting portion 211, a second mounting portion 212, and a connecting portion 213 located between the first mounting portion 211 and the second mounting portion 212. The first mounting portion 211 and the second mounting portion 212 are located at two ends of the rotating seat 210 in the first axial direction L1. One end of the connecting portion 213 connected to the first mounting portion 211 at least partially protrudes from the first mounting portion 211, and one end of the connecting portion 213 connected to the second mounting portion 212 at least partially protrudes from the second mounting portion 212. The first mounting portion 211 is provided with a first annular groove 2111, and a first buckle ring 216 is detachably mounted in the first annular groove 2111. The first gear ring 230 is mounted between the first buckle ring 216 and the portion of the connecting portion 213 protruding from the first mounting portion 211. The second mounting portion 212 is provided with a second annular groove 2112, in which a second buckle ring 217 is detachably mounted, and the second toothed ring 240 is mounted between the second buckle ring 217 and the portion of the connecting portion 213 protruding from the second mounting portion 212. When assembling the ratchet wrench, first, the ratchet block assembly is mounted on the rotating seat 210, and then the first toothed ring 230 is sleeved on the rotating seat 210, the first buckle ring 216 is mounted, and the second toothed ring 240 is sleeved on the rotating seat 210, and the second buckle ring 217 is mounted. This assembly method is simple and convenient, and can improve the assembly efficiency of the ratchet wrench.

[0080] Please continue reading Figure 7 The connecting portion 213 is provided with a first notch 2131, a second notch 2132, a third notch 2133 and a fourth notch 2134. The first notch 2131 and the third notch 2133 are located on the same side, and the second notch 2132 and the fourth notch 2134 are located on the same side.

[0081] like Figure 2 and Figure 3 As shown, the ratchet block set 220 includes two first ratchet blocks 221 and two second ratchet blocks 222. The two first ratchet blocks 221 are pivoted to the first notch 2131 and the second notch 2132, respectively, and the two first ratchet blocks 221 are respectively engaged with the first inner ring ratchet teeth 231, and the two first ratchet blocks 221 are respectively engaged with the third inner ring ratchet teeth 310. The two second ratchet blocks 222 are pivoted to the third notch 2133 and the fourth notch 2134, respectively, and the two second ratchet blocks 222 are respectively engaged with the second inner ring ratchet teeth 241, and the two second ratchet blocks 222 are respectively engaged with the third inner ring ratchet teeth 310.

[0082] In some embodiments of the present application, Figure 2 and Figure 7As shown, the first notch 2131 and the third notch 2133 are separated by a first partition plate 2135, and the second notch 2132 and the fourth notch 2134 are separated by a second partition plate 2136. The rotating seat 210 also includes a first pivot 214 and a second pivot 215. The first pivot 214 pivots the first ratchet block 221 and the second ratchet block 222 in the first notch 2131 and the third notch 2133, and the second pivot 215 pivots another first ratchet block 221 and another second ratchet block 222 in the second notch 2132 and the fourth notch 2134. The provision of the first partition plate 2135 can increase the strength of the first pivot 214 and reduce the deformation of the first pivot 214. Similarly, the provision of the second partition plate 2136 can increase the strength of the second pivot 215 and reduce the deformation of the second pivot 215.

[0083] Please continue reading Figure 2 , the accommodating hole 130 has a first open end 150 and a second open end 160. The steering mechanism 500 includes a rotating cover 510, a rotating member 520, a first elastic member and a second elastic member. The rotating member 520 can be rotatably extended into the rotating seat 210. The rotating member 520 has a first mounting hole and a second mounting hole. The first elastic member passes through the first mounting hole, and the two ends of the first elastic member extend out of the first mounting hole and respectively abut against the two first ratchet blocks 221. The second elastic member passes through the second mounting hole, and the two ends of the second elastic member extend out of the second mounting hole and respectively abut against the two second ratchet blocks 222. The rotating cover 510 is buckled on the first open end 150. The rotating cover 510 is assembled with one end of the rotating member 520. Rotating the rotating cover 510 can drive the rotating member 520 to rotate. The rotating member 520 rotates to drive the first elastic member and the second elastic member to rotate. The first elastic member and the second elastic member push the ratchet block group 220 to move to the first position or the second position.

[0084] Exemplarily, the first elastic member includes a first spring (not shown in the figure) and first push beads 530 arranged on both sides of the first spring, and the second elastic member includes a second spring (not shown in the figure) and second push beads 540 arranged on both sides of the second spring.

[0085] Please continue reading Figure 2The ratchet wrench is also provided with a pressing piece 600. A mounting groove is provided on the side of the rotating cover 510 facing away from the rotating seat 210. The pressing piece 600 is installed in the mounting groove and is fixedly connected to the rotating piece 520. An elastic piece is provided between the pressing piece 600 and the bottom of the mounting groove. A clearance opening is provided on the side of the rotating piece 520 facing away from the pressing piece 600. One end of the rotating piece 520 with the clearance opening extends into the driving head 250. The driving head 250 is provided with a mounting hole. The clearance opening corresponds to the position of the mounting hole. A limiting ball is installed in the clearance opening. Part of the limiting ball extends out of the mounting hole. The limiting ball extending out of the mounting hole of the pressing piece 600 is retracted into the mounting hole. The setting of the limiting ball is used to limit the position of the sleeve to facilitate the installation of the sleeve.

[0086] like Figure 3 As shown, the receiving hole 130 has a first open end 150 and a second open end 160, and the second open end 160 is provided with a retaining edge 170 extending into the receiving hole 130. In other words, the retaining edge 170 is an annular retaining edge, and the circumferential outer edge of the annular retaining edge is connected to the circumferential edge of the second open end 160. Exemplarily, the annular retaining edge and the circumferential edge of the second open end 160 are integrally formed. The first mounting portion 211 located between the first buckle 216 and the drive head 250 is placed in the opening enclosed by the retaining edge 170, and blocks the opening enclosed by the retaining edge 170. The first buckle 216 is pressed between the first gear ring 230 and the retaining edge 170. In other words, the first buckle 216 blocks the rotating seat 210 from passing through the receiving hole 130 from the opening enclosed by the retaining edge 170. The first buckle 216 not only defines the position of the first gear ring 230, but also defines the position of the rotating seat 210.

[0087] In some embodiments of the present application, the ratchet wrench further includes an electric drive mechanism (not shown in the figure), which is connected to the mandrel 400, and the electric drive mechanism drives the mandrel 400 to rotate. In other words, the ratchet wrench provided in the embodiment of the present application can be operated by electric drive to disassemble and assemble the bolts, and can also be operated by manual operation to disassemble and assemble the bolts. In the present application, the electric drive mechanism refers to a mechanism that can provide power output, such as a mechanism formed by a motor and a battery, and another example is a mechanism including a motor, a battery and a reducer, etc.

[0088] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0089] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A ratchet wrench, characterized in that: include: A wrench outer shell, the wrench outer shell having a first end and a second end opposite to each other, the first end being provided with a receiving hole; A rotating mechanism, the rotating mechanism is installed in the accommodating hole, and the rotating mechanism can rotate around a first axial direction in the accommodating hole, the rotating mechanism comprises a rotating seat, a ratchet block group, a first gear ring and a second gear ring; the ratchet block group is pivotally arranged on the rotating seat; the first gear ring and the second gear ring are respectively sleeved on the two ends of the rotating seat in the first axial direction, the first gear ring has a first inner ring ratchet tooth and a first end tooth, the second gear ring has a second inner ring ratchet tooth and a second end tooth, the first inner ring ratchet tooth and the second inner ring ratchet tooth are respectively meshed with the ratchet block group; the end surface of one end of the rotating seat where the first gear ring is arranged is provided with a driving head, and the driving head is located outside the accommodating hole; A mandrel, one end of which is provided with a third end tooth, the mandrel is placed in the wrench 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 steering mechanism, wherein the steering mechanism is installed on the rotating seat, and the steering mechanism can push the ratchet block group to move to the first position or the second position; when the ratchet block group moves to the first position, the core shaft is rotated, the drive head rotates clockwise, and the wrench outer shell is swung in the direction of the counterclockwise rotation of the drive head, and the ratchet block group is idle relative to the first gear ring and the second gear ring; when the ratchet block group moves to the second position, the core shaft is rotated, the drive head rotates counterclockwise, and the wrench outer shell is swung in the direction of the clockwise rotation of the drive head, and the ratchet block group is idle relative to the first gear ring and the second gear ring.

2. The ratchet wrench according to claim 1, characterized in that: The inner wall of the accommodating hole is provided with a first limiting structure; The ratchet wrench further comprises a third toothed ring, the third toothed ring having an opening, the third toothed ring being sleeved on the rotating seat and being arranged between the first toothed ring and the second toothed ring, the third toothed ring having third inner ring ratchet teeth, the third inner ring ratchet teeth being meshed with the ratchet block group; the third toothed ring is provided with a second limiting structure, the second limiting structure cooperates with the first limiting structure to fix the position of the third toothed ring in a direction around the first axial direction; The third end tooth extends into the opening; When the ratchet block group moves to the first position, the wrench outer shell is swung in the counterclockwise rotation direction of the drive head, and the ratchet block group idles relative to the third gear ring; when the ratchet block group moves to the second position, the wrench outer shell is swung in the clockwise rotation direction of the drive head, and the ratchet block group idles relative to the third gear ring.

3. The ratchet wrench according to claim 2, characterized in that: The accommodating hole has a first opening end and a second opening end, and the inner wall of the accommodating hole is provided with at least one limiting groove, one end of each limiting groove in the length direction is connected with the first opening end, and each limiting groove forms the first limiting structure; The outer side wall of the third gear ring is provided with at least one limiting protrusion, and the number of the limiting protrusions is the same as the number of the limiting grooves and corresponds one to one; in the corresponding limiting protrusions and limiting grooves, the limiting protrusions are inserted into the limiting grooves, and each limiting protrusion forms the second limiting structure.

4. The ratchet wrench according to claim 2, characterized in that: The rotating seat comprises a first mounting portion, a second mounting portion and a connecting portion located between the first mounting portion and the second mounting portion, the first mounting portion and the second mounting portion are located at two ends of the rotating seat in the first axial direction, one end of the connecting portion connected to the first mounting portion at least partially protrudes from the first mounting portion, and one end of the connecting portion connected to the second mounting portion at least partially protrudes from the second mounting portion; The first mounting portion is provided with a first annular groove, a first buckle ring is detachably mounted in the first annular groove, and the first toothed ring is mounted between the first buckle ring and a portion of the connecting portion protruding from the first mounting portion; The second mounting portion is provided with a second annular groove, a second buckle ring is detachably mounted in the second annular groove, and the second toothed ring is mounted between the second buckle ring and a portion of the connecting portion protruding from the second mounting portion.

5. The ratchet wrench according to claim 4, characterized in that: The connecting portion is provided with a first notch, a second notch, a third notch and a fourth notch, the first notch and the third notch are located on the same side, and the second notch and the fourth notch are located on the same side; The ratchet block group includes two first ratchet blocks and two second ratchet blocks, the two first ratchet blocks are pivoted to the first notch and the second notch, and the two first ratchet blocks are respectively engaged with the first inner ring ratchet teeth, and the two first ratchet blocks are respectively engaged with the third inner ring ratchet teeth; the two second ratchet blocks are pivoted to the third notch and the fourth notch, and the two second ratchet blocks are respectively engaged with the second inner ring ratchet teeth, and the two second ratchet blocks are respectively engaged with the third inner ring ratchet teeth.

6. The ratchet wrench according to claim 5, characterized in that: The first notch and the third notch are separated by a first spacing plate, and the second notch and the fourth notch are separated by a second spacing plate; The rotating seat also includes a first pivot and a second pivot, the first pivot pivots the first ratchet block and the second ratchet block in the first notch and the third notch, and the second pivot pivots another first ratchet block and another second ratchet block in the second notch and the fourth notch.

7. The ratchet wrench according to claim 5, characterized in that: The receiving hole has a first opening end and a second opening end; The steering mechanism comprises a rotating cover, a rotating member, a first elastic member and a second elastic member; The rotating member is rotatably extended into the rotating seat, and the rotating member has a first mounting hole and a second mounting hole; The first elastic member passes through the first mounting hole, and two ends of the first elastic member extend out of the first mounting hole and respectively abut against the two first ratchet blocks; The second elastic abutment member passes through the second mounting hole, and two ends of the second elastic abutment member extend out of the second mounting hole and respectively abut against the two second ratchet blocks; The rotating cover is buckled on the first opening end, and the rotating cover is assembled with one end of the rotating member. Rotating the rotating cover can drive the rotating member to rotate, and the rotation of the rotating member drives the first elastic member and the second elastic member to rotate, and the first elastic member and the second elastic member push the ratchet block group to move to the first position or the second position.

8. The ratchet wrench according to claim 7, characterized in that: The first elastic resisting member includes a first spring and first pushing beads arranged on both sides of the first spring, and the second elastic resisting member includes a second spring and second pushing beads arranged on both sides of the second spring.

9. The ratchet wrench according to claim 4, characterized in that: The receiving hole has a first opening end and a second opening end, and the second opening end is provided with a blocking edge extending into the receiving hole; The first mounting portion located between the first buckle ring and the driving head is placed in the opening enclosed by the retaining edge and blocks the opening enclosed by the retaining edge; The first buckle ring is pressed tightly between the first gear ring and the abutting edge.

10. The ratchet wrench according to any one of claims 1 to 9, characterized in that: The ratchet wrench also includes an electric drive mechanism, which is connected to the spindle and drives the spindle to rotate.

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