A two-way wrench

Abstract

The present invention discloses a bidirectional wrench, which comprises a wrench body, a toothless ratchet being rotatably connected to the wrench body, a locking block being movably connected to the wrench body along one radial side of the toothless ratchet, two track groups being arranged on the locking block along the circumferential direction of the toothless ratchet at intervals; the track group comprises a plurality of grooves arranged along the circumferential direction of the toothless ratchet, a track being formed between the grooves and the toothless ratchet, a moving part being arranged in the track, and the track being involute-shaped along the circumferential direction of the toothless ratchet; when the moving part of one of the track groups contacts the locking block and the toothless ratchet at the same time, the moving part of the other track group contacts the locking block and the toothless ratchet at different times, so that the wrench body can work normally no matter which direction it is rotated.

Description

Technical Field

[0001] The present invention relates to the technical field of wrenches, in particular to a bidirectional wrench. Background Art

[0002] In the prior art, a wrench includes a wrench body, a toothless ratchet disposed on the wrench body, and a wedge-shaped track disposed on an inner ring surface of the wrench body. When the toothless ratchet rotates, it drives a movable member to move toward the wide end or narrow end of the wedge-shaped hole within the wedge-shaped track, thereby achieving relative locking or unlocking between the toothless ratchet and the movable member. When the toothless ratchet and the movable member are relatively locked, the force generated by the rotation of the wrench body can be transmitted to the toothless ratchet, thereby tightening or removing a nut or cap through the toothless ratchet. However, the existing wrench is a one-way wrench, that is, it can only be rotated in one direction to ensure that the toothless ratchet and the movable member are relatively locked. If it is rotated in the opposite direction, the toothless ratchet and the movable member will be unlocked, and the force cannot be transmitted. The wrench in the prior art can only rotate in one direction when in use. When some users' daily usage habits are inconsistent with the direction in which the one-way wrench needs to rotate, it is easy to cause misoperation.

[0003] Therefore, the existing technology still needs to be improved and developed. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a bidirectional wrench in view of the above-mentioned defects of the prior art, so as to realize normal use of the wrench in both bidirectional rotation.

[0005] The technical solutions adopted by the present invention to solve the technical problems are as follows:

[0006] A bidirectional wrench comprises a wrench body, on which a toothless ratchet is rotatably connected, wherein a locking block is movably connected to the wrench body along one radial side of the toothless ratchet, and two track groups are arranged on the locking block at intervals along the circumferential direction of the toothless ratchet; the track group comprises a plurality of grooves arranged along the circumferential direction of the toothless ratchet, a track is formed between the grooves and the toothless ratchet, a moving part is arranged in the track, and the track is in the shape of an involute along the circumferential direction of the toothless ratchet; when the moving part of one of the track groups contacts the locking block and the toothless ratchet at the same time, the moving part of the other track group does not contact the locking block and the toothless ratchet at the same time.

[0007] The bidirectional wrench, wherein when the moving member contacts the locking block and the toothless ratchet respectively, the width of the narrow end of the track is smaller than the width of the moving member; the width of the wide end of the track is larger than the width of the moving member.

[0008] The bidirectional wrench, wherein when the moving member contacts the locking block and the toothless ratchet respectively and the moving member is located at one end of the width of the track, the moving member contacts the locking block and the toothless ratchet respectively to rotate around the toothless ratchet as the toothless ratchet rotates.

[0009] The two-way wrench, wherein a knob is provided on the wrench body, the knob is located on the side of the locking block away from the toothless ratchet, and supports the locking block; the knob can be rotated relative to the wrench body to support the locking block to move.

[0010] The bidirectional wrench, wherein a receiving groove is provided on the wrench body, and the locking block and the moving part are both located in the receiving groove; when the outer wall of the locking block close to one side of one of the track groups contacts the inner wall of the receiving groove, the moving part of the track group contacts the locking block and the toothless ratchet at the same time.

[0011] The bidirectional wrench, wherein the groove includes a first side wall and a second side wall arranged in sequence and connected along the circumferential direction of the toothless ratchet, the first side wall and the second side wall are both arc-shaped, and the curvature of the first side wall is greater than the curvature of the second side wall.

[0012] The bidirectional wrench, wherein the moving part is a ball.

[0013] In the bidirectional wrench, the movable member is a roller, and the central axis of the roller is parallel to the central axis of the toothless ratchet.

[0014] The bidirectional wrench, wherein an arc-shaped retainer is provided in the track; the arc-shaped retainer is provided with through holes corresponding one to one with the rollers; the through holes pass through the arc-shaped retainer along the radial direction of the toothless ratchet and extend along the axial direction of the roller; the roller is located in the through hole and can rotate relative to the arc-shaped retainer.

[0015] The bidirectional wrench, wherein when the roller rotates around the toothless ratchet, the arc-shaped retaining frame rotates synchronously with the roller.

[0016] Beneficial effect: In the present invention, when the moving part of one track group contacts the locking block and the toothless ratchet at the same time, the moving part of the other track group does not contact the locking block and the toothless ratchet at the same time, so that the wrench body can work normally no matter which direction it is rotated. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the bidirectional wrench of the present invention;

[0018] Figure 2It is a schematic diagram of the assembly of the wrench body, the toothless ratchet and the locking block of the present invention;

[0019] Figure 3 is an exploded schematic diagram of the bidirectional wrench of the present invention;

[0020] Figure 4 It is a structural schematic diagram of the lever body of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the locking block of the present invention;

[0022] Figure 6 Schematic diagram of the structure of the arc-shaped retainer of the present invention;

[0023] Figure 7 1 is a schematic diagram of the assembly of the arc-shaped retaining frame and the moving part in the present invention;

[0024] Figure 8 1 is a schematic diagram of the assembly of the cover plate, the retaining spring and the toothless ratchet in the present invention;

[0025] Figure 9 It is a structural schematic diagram of the knob of the present invention;

[0026] Figure 10 It is a schematic diagram of the exploded structure of the knob of the present invention;

[0027] Figure 11 This is a reference diagram of the bidirectional wrench in use when the knob is rotated counterclockwise to the maximum stroke. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clear and distinct, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0029] The present invention provides a two-way wrench, such as Figure 1 and Figure 2 As shown, the bidirectional wrench includes a wrench body 1, as shown Figure 4 As shown, the wrench body 1 is provided with a receiving hole 2, and a toothless ratchet 3 is provided in the receiving hole 2. The toothless ratchet 3 is rotatably connected to the wrench body 1. When the toothless ratchet 3 has a flower pattern that matches the nut, the toothless ratchet 3 can be engaged with the nut in the circumferential direction when it is sleeved onto the nut.

[0030] The wrench body 1 is provided with a locking block 4, which is detachably connected to the wrench body 1 and can move relative to the wrench body. The locking block 4 is located on one side of the toothless ratchet 3 in the radial direction; Figure 2 and Figure 5 As shown, the locking block 4 is provided with two track groups on the side facing the toothless ratchet 3, which are hereinafter referred to as the first track group 1001 and the second track group 1002. The first track group 1001 and the second track group 1002 are arranged in sequence along the circumferential direction of the toothless ratchet 3; the first track group 1001 and the second track group 1002 are arranged at intervals; the first track group 1001 and the second track group 1002 have the same structure. Figure 5 As shown, the first track group 1001 includes a plurality of grooves 41, and the plurality of grooves 41 are sequentially arranged along the circumferential direction of the toothless ratchet 3. Figure 2 As shown, a track 5 is formed between each groove 41 and the toothless ratchet 3. The track 5 is in an involute shape, that is, the width of the track 5 is gradually deformed from narrow to wide or from wide to narrow along the circumferential direction of the toothless ratchet 3. A moving member 6 is provided in the track 5.

[0031] In the present invention, the track 5 enables the movable part 6 to transition between the unlocked and locked states; the track 5 is integrated on the locking block 4, becoming a detachable and assemblable accessory on the wrench body 1; the locking block 4 can be manufactured independently, which greatly simplifies the processing technology; even if the locking block 4 does not meet the standards during the manufacturing process, it is only necessary to remake the locking block 4 without reworking the entire wrench body 1, which greatly improves the product yield.

[0032] When the moving part of the first track group 1001 contacts the locking block 4 and the toothless ratchet 3 at the same time, the lever body 1 is rotated so that the toothless ratchet 3 rotates along the direction of the track of the first track group 1001 from wide to narrow. When the moving part of the first track group 1001 moves to the narrowest end of the track, the lever body 1, the moving part of the first track group 1001 and the toothless ratchet 3 cannot move relative to each other, and the moving part of the first track group 1001 can transmit torque. The lever body 1 The toothless ratchet 3 is linked to drive the nut to rotate; at this time, the moving part of the second track group 1002 does not contact the toothless ratchet 3 and the locking block 4 at the same time, that is: when the moving part of the second track group 1002 contacts the toothless ratchet 3, it is separated from the locking block 4; when the moving part of the second track group 1002 contacts the locking block 4, it is separated from the toothless ratchet 3; at this time, the moving part of the second track group 1002 cannot transmit torque, that is, the second track group 1002 is in a non-working state. Only by rotating the wrench body 1 in the direction from narrow to wide along the track of the first track group 1001 can the normal operation of the bidirectional wrench be guaranteed.

[0033] When the moving member of the second track group 1002 is in contact with the locking block 4 and the toothless ratchet 3 at the same time, the wrench body 1 is rotated so that the toothless ratchet 3 rotates along the direction in which the track of the second track group 1002 becomes narrower. Then, when the moving member of the second track group 1002 moves to the narrowest end of the track, the wrench body 1, the moving member of the second track group 1002, and the toothless ratchet 3 cannot move relative to each other. The moving member of the second track group 1002 can transmit torque, and the wrench body 1 links the toothless ratchet 3 to drive the nut to rotate. At this time, the moving member of the first track group 1001 is not in contact with the toothless ratchet 3 and the locking block 4 at the same time, and the moving member of the first track group 1001 cannot transmit torque, that is, the first track group 1001 is in a non-working state. Only by rotating the wrench body 1 in the opposite direction of the direction in which the track of the second track group 1002 becomes narrower can the normal operation of the bidirectional wrench be guaranteed. Since the second track group 1002 has the same structure as the first track group 1001, the rotation direction of the wrench body 1 when the moving part in the first track group 1001 is in a working state is opposite to the rotation direction of the wrench body 1 when the moving part in the second track group 1002 is in a working state. Therefore, when the wrench body 1 is rotated from different directions, the normal operation of the bidirectional wrench can be achieved.

[0034] In the present invention, when the bidirectional wrench is in a working state, among the moving parts of the first track group 1001 and the moving parts of the second track group 1002, the moving parts of one and only one moving group are in contact with the toothless ratchet 3 and the locking block 4 respectively, while the moving parts of the other moving group are in a non-working state.

[0035] When the movable member 6 contacts the toothless ratchet 3 and the locking block 4 respectively, the width of the narrow end of the track 5 is smaller than the width of the movable member 6; when the movable member 6 is located at the narrow end of the track 5, the locking block 4 and the toothless ratchet 3 interact with each other to clamp the movable member 6, and the movable member 6 forms an interference fit with the side wall of the track 5; at this time, the movable member 6 and the toothless ratchet 3 cannot move relative to each other; because the locking block 4 and the wrench body 1 are connected to each other, when the movable member 6 is located at the narrow end of the track 5, the wrench body 1, the movable member 6 and the toothless ratchet 3 cannot move relative to each other, and the movable member 6 can transmit torque, and the wrench body links the toothless ratchet 3 to drive the nut to rotate.

[0036] like Figure 3As shown, when the movable member 6 contacts the toothless ratchet 3 and the locking block 4 respectively, and the movable member 6 is located at the wide end of the track 5, the movable member 6 can rotate around the toothless ratchet 3 along with the rotation of the toothless ratchet 3. At this time, the movable member 6 can generate movement relative to the wrench body 1 and the toothless ratchet 3, and the movable member 6 cannot transmit torque between the wrench body 1 and the toothless ratchet 3. The two-way wrench is in an unlocked state and cannot turn the nut.

[0037] There is a gap between the locking block 4 and the toothless ratchet 3; Figure 5 As shown, the groove 41 includes a first side wall 411 and a second side wall 412, and the first side wall 411 and the second side wall 412 are sequentially arranged and connected along the circumferential direction of the toothless ratchet 3; the first side wall 411, the second side wall 412, and the appearance surface of the toothless ratchet 3 respectively limit the movable member 6 from both sides of the movable member 6, forming a track 5 for the movable member 6 to move. The first side wall 411 and the second side wall 412 are both arc-shaped, and the curvature of the first side wall 411 is greater than the curvature of the second side wall 412; the end of the first side wall 411 connected to the second side wall 412 becomes the widest position of the track 5.

[0038] The movable member 6 is a ball or a roller; the curvature of the first side wall 411 matches the circumferential curvature of the movable member 6, so that when the movable member 6 is located at the widest part of the track 5, the end of the first side wall 411 away from the second side wall 412 can limit the movable member 6, ensuring that the movement of the movable member 6 is limited within the track 5; the gap between the locking block 4 and the toothless ratchet 3 is not sufficient to accommodate the movable member 6.

[0039] Example 1

[0040] In the present invention, Figure 2 and Figure 5As shown, along the circumference of the toothless ratchet 3, the first track set 1001 is located to the right of the second track set 1002. The first side wall 411 and the second side wall 412 of the groove of the first track set 1001 are arranged in sequence along the circumference of the toothless ratchet 3 in the clockwise direction; along the circumference of the toothless ratchet 3, the track of the first track set 1001 gradually narrows. For the first track group 1001: when in use, the toothless ratchet 3 is sleeved onto the nut, and the locking block 4 is pushed so that the movable member 6 contacts both the locking block 4 and the toothless ratchet 3; the movable member 6 is located at the wide end of the track 5, and the two-way wrench is in an unlocked state and cannot operate the nut; the wrench body 1 is rotated counterclockwise, and the wrench body 1 applies reverse stress to the toothless ratchet 3, then the toothless ratchet 3 rotates clockwise relative to the wrench body 1, and the movable member 6 rotates synchronously with the toothless ratchet 3, and rotates clockwise around the toothless ratchet 3 to the narrow end of the track 5, thereby generating a clamping effect between the locking block 4 and the toothless ratchet 3, and the wrench body 1 links the toothless ratchet 3 to drive the nut to rotate.

[0041] When the wrench body 1 is rotated clockwise, the moving part 6 moves toward the wider end of the track 5, thereby unlocking the bidirectional wrench. The locking block 4 is pushed, so that the moving part of the second track group 1002 contacts the locking block 4 and the toothless ratchet 3 at the same time, and the wrench body 1 continues to be rotated clockwise, then the moving part of the second track group 1002 rotates synchronously with the toothless ratchet 3, and rotates counterclockwise around the toothless ratchet 3 to the narrow end of the track of the second track group 1002, thereby generating a locking effect between the locking block 4 and the toothless ratchet, and the wrench body 1 links the toothless ratchet 3 to drive the nut to rotate.

[0042] Example 2

[0043] In the present invention, along the clockwise direction of the circumference of the toothless ratchet 3, the first track set 1001 is located to the left of the second track set 1002. The first sidewall 411 and the second sidewall 412 of the groove of the first track set 1001 are arranged in sequence in the counterclockwise direction of the circumference of the toothless ratchet 3. Along the counterclockwise direction of the circumference of the toothless ratchet 3, the track of the first track set 1001 becomes narrower; along the clockwise direction of the circumference of the toothless ratchet 3, the track of the first track set 1001 becomes wider. For the first track group 1001: initially, the movable part 6 is located at the wide end of the track 5, and the two-way wrench is in an unlocked state and cannot operate the nut; when in use, the toothless ratchet 3 is sleeved onto the nut, and the locking block 4 is pushed so that the movable part 6 contacts both the locking block 4 and the toothless ratchet 3; the wrench body 1 is rotated clockwise, and the wrench body 1 applies reverse stress to the toothless ratchet 3, then the toothless ratchet 3 rotates counterclockwise relative to the wrench body 1, and the movable part 6 rotates synchronously with the toothless ratchet 3, and rotates counterclockwise around the toothless ratchet 3 to the narrow end of the track 5, thereby generating a locking effect between the locking block 4 and the toothless ratchet 3, and the wrench body 1 links the toothless ratchet 3 to drive the nut to rotate.

[0044] When the wrench body 1 is rotated counterclockwise, the moving part 6 moves toward the wider end of the track 5, thereby unlocking the bidirectional wrench. The locking block 4 is pushed, so that the moving part of the second track group 1002 contacts the locking block 4 and the toothless ratchet 3 at the same time, and the wrench body 1 continues to be rotated counterclockwise, then the moving part of the second track group 1002 rotates synchronously with the toothless ratchet 3, and rotates clockwise around the toothless ratchet 3 to the narrow end of the track of the second track group 1002, thereby generating a locking effect between the locking block 4 and the toothless ratchet 3, and the wrench body 1 links the toothless ratchet 3 to drive the nut to rotate.

[0045] Further, such as Figure 4As shown, the wrench body 1 of the present invention is provided with a receiving groove 11 for accommodating the locking block 4 and the moving part 6. The receiving groove 11 is connected to the receiving hole 2 along the radial direction of the toothless ratchet 3, so that when the locking block 4 and the moving part 6 are assembled into the receiving groove 11, the moving part 6 can contact the toothless ratchet 3 to achieve the transmission of torque. The receiving groove 11 forms a receiving space and a limiting space for accommodating the locking block 4 and the moving part 6; along the radial direction of the toothless ratchet 3, the locking block 4 and the moving part 6 are respectively limited by the inner wall of the receiving groove 11 and the toothless ratchet 3; after the locking block 4 and the moving part 6 are processed, it is only necessary to assemble the locking block 4 and the moving part 6 into the receiving groove 11 without installing screws and other fixing parts; it is convenient for both assembly and disassembly, greatly simplifying the assembly process and saving production costs.

[0046] like Figure 3 As shown, a cover plate 7 is provided on the wrench body 1, and the cover plate 7 is used to cover the accommodating groove 11; the cover plate 7 and the bottom of the accommodating groove 11 are parallel to the axial direction of the toothless ratchet 3 to limit the locking block 4 and the moving part 6.

[0047] At the same time, due to the setting of the accommodating groove 11, the moving part 6 is closer to the middle part of the outer surface of the toothless ratchet 3 along the moving path of the toothless ratchet 3, which is more conducive to the toothless ratchet 3 driving the moving part 6 to move in the track 5.

[0048] like Figure 1As shown, a knob 100 is provided on the wrench body 1, and the knob 100 is located on the side of the locking block 4 away from the toothless ratchet 3, and supports the locking block 4; the knob 100 can be rotated relative to the wrench body 1 to support the locking block 4 to move in the accommodating groove 11, so that the side wall of the locking block 4 close to the first track group 1001 contacts the inner wall of the accommodating groove 11, or the side wall of the locking block 4 close to the second track group 1002 contacts the inner wall of the accommodating groove 11. When the side wall of the locking block 4 close to the first track group 1001 contacts the inner wall of the receiving groove 11, the moving part of the first track group 1001 contacts the locking block 4 and the toothless ratchet 3 respectively, the side wall of the locking block 4 close to the second track group 1002 separates from the inner wall of the receiving groove 11, and the moving part of the second track group 1002 cannot contact the toothless ratchet 3 and the locking block 4 at the same time. When the side wall of the locking block 4 close to the second track group 1002 contacts the inner wall of the receiving groove 11, the moving part of the second track group 1002 contacts the locking block 4 and the toothless ratchet 3 respectively, the side wall of the locking block 4 close to the first track group 1001 separates from the inner wall of the receiving groove 11, and the moving part of the first track group 1001 does not contact the toothless ratchet 3 and the locking block 4 at the same time.

[0049] Therefore, in the present invention, the position of the locking block 4 is changed by rotating the knob 100 , thereby achieving switching and adjustment of the working states of the moving parts of the first track group 1001 and the moving parts of the second track group 1002 .

[0050] The locking block 4 is a crescent-shaped locking block, the arc side wall of the crescent-shaped locking block with a large curvature is away from the toothless ratchet 3, and the arc side wall of the crescent-shaped locking block with a large curvature is close to the toothless ratchet 3. Figure 2 and Figure 5 As shown, a first groove 200 is provided in the middle of the arc-shaped side wall with a large curvature of the crescent-shaped locking block, that is, a first groove 200 is provided on the side of the locking block 4 away from the toothless ratchet 3, and the first groove 200 is arranged concavely toward the direction of the toothless ratchet 3. Figure 5 As shown, the first groove 200 includes a first arcuate side wall 201 and a second arcuate side wall 202 connected to each other, wherein the first arcuate side wall 201 is close to the first track set 1001, and the second arcuate side wall 202 is close to the second track set 1002. In the present invention, when the knob 100 is rotated counterclockwise to the maximum stroke, as shown in FIG. Figure 5 and Figure 11As shown, the knob 100 supports the first arc-shaped side wall 201, so that the outer wall of the locking block 4 close to the first track set 1001 can contact the inner wall of the receiving groove 11. Figure 3 and Figure 5 As shown, when the knob 100 is rotated clockwise to the maximum stroke, the knob 100 supports the second arc-shaped side wall 202, so that the outer wall of the locking block 4 close to the second track group 1002 can contact the inner wall of the accommodating groove 11.

[0051] like Figure 9 and Figure 10 As shown, the knob 100 includes a knob body 110, a push pin 130 and an elastic member 120; the knob body 110 is rotatably connected to the wrench body 1, and a mounting hole 111 is provided on the knob body 110; one end of the push pin 130 is located in the mounting hole 111 and is connected to the knob body 110 through the elastic member 120; the other end of the push pin 130 is located outside the mounting hole 111 and is located in the first groove 200; the push pin 130 supports the locking block 4.

[0052] Since when the knob 100 pushes the locking block 4 to move, the distance between the knob 100 and the first curved side wall 201 and the second curved side wall 202 will also change accordingly. Therefore, in order to ensure that no matter how the locking block 4 moves, the toggle pin 130 can contact and push the locking block; the elastic member 120 in the present invention is always in a compressed state to ensure that the elastic member 120 always generates a holding force on the locking block 4, so that the knob 100 can position the locking block 4 in the working state of the moving part of the first track group 1001 or the working state of the moving part of the second track group 1002; only by rotating the knob 100 can the locking block 4 be moved in the accommodating groove 11, thereby realizing the adjustment of the working state, adjusting the moving part of the first track group 1001 from the working state to the non-working state, or adjusting the moving part of the second track group 1002 from the working state to the non-working state.

[0053] When the toggle pin 130 contacts the first arc-shaped side wall 201, Figure 2 、 Figure 5 and Figure 11 As shown, the knob body 110 rotates counterclockwise to the maximum stroke, the moving member of the first track group 1001 contacts the locking block 4 and the toothless ratchet 3 at the same time, and the moving member of the second track group 1002 does not contact the toothless ratchet 3 and the locking block 4 at the same time; when the toggle pin 130 contacts the second arc-shaped side wall 202, as shown Figure 2 、 Figure 3and Figure 5 As shown, the knob body 110 rotates clockwise to the maximum stroke, the moving part of the second track group 1002 contacts the locking block 4 and the toothless ratchet 3 at the same time, and the moving part of the first track group 1001 does not contact the toothless ratchet 3 and the locking block 4 at the same time.

[0054] like Figure 4 As shown, a second accommodating groove 300 is provided on the wrench body 1, and the second accommodating groove 300 is located on the side of the accommodating groove 11 away from the toothless ratchet 3 and is connected to the accommodating groove 11; the knob body 110 is partially located in the second accommodating groove 300 and partially located in the accommodating groove 11; the toggle pin 130 is located in the accommodating groove 11 to support the locking block 4.

[0055] In a specific embodiment, the moving member 6 is a roller, and the central axis of the roller is parallel to the central axis of the toothless ratchet 3. Figure 3 As shown, two arc-shaped retainers 10 are provided between the locking block 4 and the toothless ratchet 3; the arc-shaped retainer 10 is provided with through holes 101 corresponding to the rollers one by one; the through holes 101 pass through the arc-shaped retainer 10 along the radial direction of the toothless ratchet 3 and extend along the axial direction of the roller; the roller is located in the through hole 101 and can rotate relative to the arc-shaped retainer 10.

[0056] Of the two arc-shaped retainers 10, one is located in the track formed between the groove of the first track group 1001 and the toothless ratchet 3, and the other is located in the track formed between the groove of the second track group 1002 and the toothless ratchet 3. The two arc-shaped retainers 10 have the same structure and the same working principle. The following is a specific description of the arc-shaped retainer located in the track formed between the groove of the first track group 1001 and the toothless ratchet 3 as an example:

[0057] like Figure 6 and Figure 7 As shown, the arcuate retainer 10 is provided with at least one through-hole 101, one corresponding to each roller. The through-hole 101 penetrates the arcuate retainer 10 in the radial direction of the toothless ratchet 3 and extends axially along the roller to accommodate the roller. The curvature of the arcuate retainer 10 is the same as that of the toothless ratchet 3. When the roller rotates around the toothless ratchet 3, the arcuate retainer 10 rotates synchronously with the roller.

[0058] The arcuate retainer 10 positions the roller via the through-hole 101, ensuring that the central axis of the roller remains parallel to the central axis of the toothless ratchet 3 as the roller moves within the track 5, preventing the roller from tilting and thus preventing the two-way wrench from being locked. Furthermore, the arcuate retainer 10 positions the roller so that its movement path along the outer surface of the toothless ratchet 3 is located in the middle of the outer surface of the toothless ratchet 3. This ensures that when the toothless ratchet 3 rotates in the unlocked state, it can drive the roller and the arcuate retainer 10 to rotate, preventing the toothless ratchet 3 from idling.

[0059] The sidewalls of the through-hole 101 are curved to match the circular outer surface of the roller; a gap exists between the sidewalls of the through-hole 101 and the roller, allowing the roller to roll along the outer surface of the toothless ratchet 3 under the drive of the toothless ratchet 3. When the two-way wrench is unlocked and the toothless ratchet 3 rotates, the roller rotates in the opposite direction to the toothless ratchet 3 while simultaneously revolving around the toothless ratchet 3 in the same direction.

[0060] like Figure 3 and Figure 8 As shown, the cover plate 7 includes a cover plate body 71 and a ring 72, the cover plate body 71 is used to cover the accommodating groove 11, and the ring 72 is sleeved on the toothless ratchet 3; after the locking block 4, the moving part 6, and the arc-shaped retaining frame 10 are assembled into the accommodating groove 11, the ring 72 is sleeved onto the toothless ratchet 3, and the cover plate body 71 covers the accommodating groove 11.

[0061] like Figure 8 As shown, an annular limiting groove 31 is provided on the toothless ratchet 3, and a retaining spring 9 is also provided in the annular limiting groove 31. The retaining spring 9 contacts the collar 72 and limits the collar 72 to prevent the collar 72 from detaching from the toothless ratchet 3.

[0062] The inner hole of the toothless ratchet 3 forms a multi-pointed star-shaped pattern, which is suitable for nuts of various shapes. In a specific embodiment, the inner hole of the toothless ratchet 3 is a hexagonal hole or a dodecagonal hole.

[0063] In summary, the present invention provides a two-way wrench, which includes a wrench body, a toothless ratchet being rotatably connected to the wrench body, a locking block being movably connected to the wrench body along one radial side of the toothless ratchet, and two track groups being arranged on the locking block at intervals along the circumferential direction of the toothless ratchet; the track group includes a plurality of grooves arranged along the circumferential direction of the toothless ratchet, a track being formed between the grooves and the toothless ratchet, a moving part being arranged in the track, and the track being involute-shaped along the circumferential direction of the toothless ratchet; when the moving part of one of the track groups contacts the locking block and the toothless ratchet at the same time, the moving part of the other track group does not contact the locking block and the toothless ratchet at the same time; when the wrench body is rotated from different directions, the normal operation of the two-way wrench can be achieved.

[0064] It should be understood that the application of the present invention is not limited to the above examples. For those skilled in the art, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A two-way wrench, comprising a wrench body, a toothless ratchet wheel being rotatably connected to the wrench body, characterized in that: A locking block is movably connected to the wrench body along one side of the radial direction of the toothless ratchet, and two track groups are arranged on the locking block at intervals along the circumferential direction of the toothless ratchet; the track group includes a plurality of grooves arranged along the circumferential direction of the toothless ratchet, and a track is formed between the groove and the toothless ratchet, and a moving member is arranged in the track, and the track is involute along the circumferential direction of the toothless ratchet; when the moving member of one of the track groups contacts the locking block and the toothless ratchet at the same time, the moving member of the other track group contacts the locking block and the toothless ratchet at different times; a knob is arranged on the wrench body, and the knob is located on the side of the locking block away from the toothless ratchet and supports the locking block; the knob can be rotated relative to the wrench body to support the locking block to move; a receiving groove is arranged on the wrench body, and the locking block and the moving member are both located in the The cam is an angular channel that is formed on a side of the locking block that is close to the toothless ratchet, and the cam is a channel that is formed between the toothless ratchet and the locking block. The cam is an arcuate channel that is formed between the toothless ratchet and the locking block. The cam is a channel that is formed between the toothless ratchet and the locking block.

2. The bidirectional wrench according to claim 1, characterized in that: When the moving member contacts the locking block and the toothless ratchet respectively, the width of the narrow end of the track is smaller than the width of the moving member; and the width of the wide end of the track is larger than the width of the moving member.

3. The bidirectional wrench according to claim 1, characterized in that: When the moving member contacts the locking block and the toothless ratchet respectively, and the moving member is located at the wide end of the track, the moving member contacts the locking block and the toothless ratchet respectively to rotate around the toothless ratchet as the toothless ratchet rotates.

4. The bidirectional wrench according to claim 1, characterized in that: The groove includes a first side wall and a second side wall which are sequentially arranged and connected along the circumferential direction of the toothless ratchet wheel, the first side wall and the second side wall are both arc-shaped, and the curvature of the first side wall is greater than the curvature of the second side wall.

5. The bidirectional wrench according to claim 1, characterized in that: The moving part is a ball.

6. The bidirectional wrench according to claim 1, characterized in that: The moving part is a roller, and the central axis of the roller is parallel to the central axis of the toothless ratchet.

7. The bidirectional wrench according to claim 6, characterized in that: An arc-shaped retaining frame is arranged in the track; the arc-shaped retaining frame is provided with through holes corresponding to the rollers one by one; the through holes penetrate the arc-shaped retaining frame along the radial direction of the toothless ratchet wheel and extend along the axial direction of the roller; the roller is located in the through holes and can rotate relative to the arc-shaped retaining frame.

8. The bidirectional wrench according to claim 7, characterized in that: When the roller rotates around the toothless ratchet, the arc-shaped retaining frame rotates synchronously with the roller.

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