CN111070144A - Bidirectional wrench - Google Patents
Bidirectional wrench Download PDFInfo
- Publication number
- CN111070144A CN111070144A CN201911425640.6A CN201911425640A CN111070144A CN 111070144 A CN111070144 A CN 111070144A CN 201911425640 A CN201911425640 A CN 201911425640A CN 111070144 A CN111070144 A CN 111070144A
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- Prior art keywords
- toothless ratchet
- track
- ratchet wheel
- locking block
- wrench
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- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 31
- 230000002441 reversible effect Effects 0.000 claims description 12
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B13/00—Spanners; Wrenches
- B25B13/46—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle
- B25B13/461—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member
- B25B13/462—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B13/00—Spanners; Wrenches
- B25B13/02—Spanners; Wrenches with rigid jaws
- B25B13/08—Spanners; Wrenches with rigid jaws of open jaw type
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The invention discloses a bidirectional wrench, which comprises a wrench body, wherein a toothless ratchet wheel is rotatably connected to the wrench body, a locking block is movably connected to one side of the wrench body along the radial direction of the toothless ratchet wheel, and two track groups are arranged on the locking block at intervals along the circumferential direction of the toothless ratchet wheel; the track group comprises a plurality of grooves which are arranged along the circumferential direction of the toothless ratchet wheel, a track is formed between the grooves and the toothless ratchet wheel, moving parts are arranged in the track, and the track is in an involute shape along the circumferential direction of the toothless ratchet wheel; when the moving piece of one of the track groups is simultaneously contacted with the locking block and the toothless ratchet wheel, the moving piece of the other track group is not simultaneously contacted with the locking block and the toothless ratchet wheel, so that the spanner body can normally work no matter which direction the spanner body rotates.
Description
Technical Field
The invention relates to the technical field of wrenches, in particular to a bidirectional wrench.
Background
In the prior art, a wrench comprises a wrench body, a toothless ratchet wheel arranged on the wrench body and a wedge-shaped track arranged on the inner ring surface of the wrench body; when the toothless ratchet wheel rotates, the moving piece is driven to move towards the wide end or the narrow end of the wedge-shaped hole in the wedge-shaped track, and the relative locking or unlocking between the toothless ratchet wheel and the moving piece is realized; when the toothless ratchet wheel and the moving part are locked relatively, the force generated by the rotation of the wrench body can be transmitted to the toothless ratchet wheel, so that the nut or the nut is screwed or disassembled through the toothless ratchet wheel. The existing spanner is a one-way spanner, namely, the existing spanner can only rotate along one direction to ensure that the toothless ratchet wheel and the moving part are locked relatively, and if the existing spanner rotates in the opposite direction, the toothless ratchet wheel and the moving part can be unlocked, and force cannot be conducted. The wrench in the prior art can only rotate in one direction when in use, and when the daily use habits of some users are inconsistent with the direction in which the one-way wrench needs to rotate, misoperation is easily caused.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
The present invention provides a bidirectional wrench, which aims to solve the above-mentioned problems in the prior art, and aims to achieve normal use of the wrench in bidirectional rotation.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a bidirectional wrench comprises a wrench body, wherein a toothless ratchet wheel is rotatably connected to the wrench body, a locking block is movably connected to one side of the wrench body along the radial direction of the toothless ratchet wheel, and two track groups are arranged on the locking block at intervals along the circumferential direction of the toothless ratchet wheel; the track group comprises a plurality of grooves which are arranged along the circumferential direction of the toothless ratchet wheel, a track is formed between the grooves and the toothless ratchet wheel, moving parts are arranged in the track, and the track is in an involute shape along the circumferential direction of the toothless ratchet wheel; when the moving piece of one track group is simultaneously contacted with the locking block and the toothless ratchet wheel, the moving piece of the other track group is not simultaneously contacted with the locking block and the toothless ratchet wheel.
The bidirectional wrench is characterized in that when the moving piece is respectively contacted with the locking block and the toothless ratchet wheel, the width of the narrow end of the track is smaller than that of the moving piece; the width of the wide end of the track is larger than the width of the moving part.
The bidirectional wrench, wherein, when the moving member is respectively in contact with the locking block and the toothless ratchet wheel and the moving member is located at one end of the track width, the moving member is respectively in contact with the locking block and the toothless ratchet wheel so as to rotate around the toothless ratchet wheel along with the rotation of the toothless ratchet wheel.
The bidirectional wrench is characterized in that a knob is arranged on the wrench body, and the knob is positioned on one side of the locking block, which is far away from the toothless ratchet wheel, and supports the locking block; the knob can rotate relative to the wrench body so as to prop the locking block to move.
The bidirectional wrench is characterized in that the wrench body is provided with an accommodating groove, and the locking block and the moving piece are both positioned in the accommodating groove; when the outer wall of the locking block close to one side of one of the track groups is in contact with the inner wall of the accommodating groove, the moving piece of the track group is simultaneously in contact with the locking block and the toothless ratchet wheel.
The bidirectional wrench is characterized in that the groove comprises a first side wall and a second side wall which are sequentially arranged and connected in 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 larger than that of the second side wall.
The two-way spanner, wherein, the moving member is the ball.
The bidirectional wrench is characterized in that the moving piece is a roller, and the central axis of the roller is parallel to the central axis of the toothless ratchet wheel.
The bidirectional wrench is characterized in that an arc-shaped retainer is arranged in the track; the arc-shaped retainer is provided with through holes which correspond to the rollers one by one; the through hole penetrates through the arc-shaped retainer along the radial direction of the toothless ratchet wheel and extends along the axial direction of the roller; the roller is positioned in the through hole and can rotate relative to the arc-shaped retainer.
The bidirectional wrench, wherein the arc-shaped holder rotates synchronously with the roller when the roller rotates around the toothless ratchet.
Has the advantages that: when the moving piece of one track group is simultaneously contacted with the locking block and the toothless ratchet wheel, the moving piece of the other track group is not simultaneously contacted with the locking block and the toothless ratchet wheel, so that the spanner body can normally work no matter the spanner body is rotated in any direction.
Drawings
FIG. 1 is a schematic structural view of a reversible wrench according to the present invention;
FIG. 2 is a schematic view of the assembly of the wrench body, the toothless ratchet and the locking block of the present invention;
FIG. 3 is an exploded view of the reversible wrench of the present invention;
FIG. 4 is a schematic structural view of the wrench body according to the present invention;
FIG. 5 is a schematic view of the locking segment of the present invention;
FIG. 6 is a schematic view of the construction of the arc-shaped cage according to the present invention;
FIG. 7 is a schematic view of the assembly of the arc-shaped retainer and the moving member in the present invention;
FIG. 8 is a schematic view of the cover plate, the snap spring and the toothless ratchet of the present invention assembled;
FIG. 9 is a schematic view of the knob of the present invention;
FIG. 10 is an exploded view of the knob of the present invention;
fig. 11 is a reference view showing a state in which the reversible wrench is used when the knob is rotated counterclockwise to a maximum stroke in the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, 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 merely illustrative of the invention and are not intended to limit the invention.
The invention provides a bidirectional wrench, which comprises a wrench body 1 as shown in figures 1 and 2, wherein an accommodating hole 2 is formed in the wrench body 1 as shown in figure 4, a toothless ratchet wheel 3 is arranged in the accommodating hole 2, and the toothless ratchet wheel 3 is rotatably connected with the wrench body 1. When the toothless ratchet wheel 3 has a pattern matched with the screw cap, the toothless ratchet wheel 3 can be clamped and stopped with the circumferential direction of the screw cap when being sleeved on the screw cap.
The spanner body 1 is provided with a locking block 4, the locking block 4 is detachably connected with the spanner body 1, and the locking block can move relative to the spanner body. The locking block 4 is positioned on one radial side of the toothless ratchet wheel 3; as shown in fig. 2 and 5, the locking block 4 is provided with two track sets on a side facing the toothless ratchet 3, and hereinafter, the two track sets are referred to as a first track set 1001 and a second track set 1002, respectively. The first track group 1001 and the second track group 1002 are sequentially arranged along the circumferential direction of the toothless ratchet 3; the first track set 1001 and the second track set 1002 are arranged at intervals; the first track set 1001 and the second track set 1002 have the same structure. As shown in fig. 5, the first track set 1001 includes a plurality of grooves 41, and the plurality of grooves 41 are sequentially arranged in a circumferential direction of the toothless ratchet 3. As shown in fig. 2, a track 5 is formed between each groove 41 and the toothless ratchet wheel 3, and the track 5 is involute, i.e. the width of the track 5 is gradually changed from narrow to wide or from wide to narrow along the circumferential direction of the toothless ratchet wheel 3. A moving member 6 is arranged in the rail 5.
In the invention, the rail 5 enables the moving member 6 to be converted between an unlocking state and a locking state; the rail 5 is integrated on the locking block 4 and becomes a detachable and assemblable accessory on the wrench body 1; the locking block 4 can be independently manufactured, so that the processing technology is greatly simplified; even if the locking block 4 does not reach the standard in the manufacturing process, the locking block 4 only needs to be manufactured again without reworking the whole wrench body 1, and the product yield is greatly improved.
When the moving member of the first track group 1001 is simultaneously contacted with the locking block 4 and the toothless ratchet 3, the wrench body 1 is rotated to enable the toothless ratchet 3 to rotate along the track of the first track group 1001 from the direction of width to width, when the moving member of the first track group 1001 moves to the narrowest end of the track, the wrench body 1, the moving member of the first track group 1001 and the toothless ratchet 3 cannot move relatively, the moving member of the first track group 1001 can transmit torque, and the wrench body 1 is linked with the toothless ratchet 3 to drive the nut to rotate; at this time, the moving member of the second track group 1002 is not simultaneously in contact with the toothless ratchet 3 and the locking block 4, that is: when the moving member of the second track group 1002 is in contact with the toothless ratchet 3, the moving member is separated from the locking block 4; when the moving member of the second track group 1002 contacts with the locking block 4, the moving member is separated from the toothless ratchet 3; at this time, the moving member of the second track set 1002 cannot transmit torque, that is, the second track set 1002 is in a non-operating state. The two-way wrench can be guaranteed to work normally only by rotating the wrench body 1 along the track of the first track set 1001 from the narrow and wide directions.
When the moving member of the second track group 1002 is simultaneously in contact with the locking block 4 and the toothless ratchet 3, the wrench body 1 is rotated to enable the toothless ratchet 3 to rotate along the track of the second track group 1002 from a width direction to a width direction, 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 relatively, the moving member of the second track group 1002 can transmit torque, and the wrench body 1 is linked with the toothless ratchet 3 to drive the nut to rotate; at this time, the moving member of the first track set 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 set 1001 cannot transmit torque, that is, the first track set 1001 is in a non-operating state. The two-way wrench can be guaranteed to work normally only by rotating the wrench body 1 along the track of the second track group 1002 from the opposite direction of the width and the width. Because the second track group 1002 and the first track group 1001 have the same structure, the rotation direction of the wrench body 1 when the moving member in the first track group 1001 is in the working state is opposite to the rotation direction of the wrench body 1 when the moving member in the second track group 1002 is in the working state, so that the normal operation of the bidirectional wrench can be realized when the wrench body 1 is rotated from different directions.
In the present invention, when the bidirectional wrench is in an operating state, of the moving members of the first track group 1001 and the moving members of the second track group 1002, only one moving member of the moving group is in contact with the toothless ratchet 3 and the locking block 4, respectively, and the moving member of the other moving group is in a non-operating state.
When the moving piece 6 is respectively contacted with the toothless ratchet wheel 3 and the locking block 4, the width of the narrow end of the track 5 is smaller than that of the moving piece 6; when the moving piece 6 is positioned at the narrow end of the track 5, the locking block 4 and the toothless ratchet wheel 3 interact to clamp the moving piece 6, and the moving piece 6 is in interference fit with the side wall of the track 5; at this time, the moving member 6 and the toothless ratchet 3 cannot move relatively; because the locking block 4 and the wrench body 1 are connected with each other, when the moving member 6 is located at the narrow end of the rail 5, the wrench body 1, the moving member 6 and the toothless ratchet wheel 3 can not move relatively, the moving member 6 can transmit torque, and the wrench body is linked with the toothless ratchet wheel 3 to drive the nut to rotate.
As shown in fig. 3, when the moving member 6 is in contact with the toothless ratchet 3 and the locking block 4, respectively, and the moving member 6 is located at one end of the width of the rail 5, the moving member 6 can rotate around the toothless ratchet 3 with the rotation of the toothless ratchet 3. At this time, the moving member 6 can move relative to the wrench body 1 and the toothless ratchet 3, the moving member 6 cannot transmit torque between the wrench body 1 and the toothless ratchet 3, and the bidirectional wrench is in an unlocked state and cannot screw a nut.
A gap is reserved between the locking block 4 and the toothless ratchet wheel 3; as shown in fig. 5, 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 appearance surfaces of the first side wall 411, the second side wall 412 and the toothless ratchet wheel 3 limit the moving member 6 from two sides of the moving member 6 respectively to form a track 5 for the moving 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 larger than that of the second side wall 412; the end of the first side wall 411 connected to the second side wall 412 is the widest point of the rail 5.
The moving piece 6 is a ball or a roller; the curvature of the first side wall 411 is matched with the circumferential curvature of the moving member 6, so that when the moving member 6 is located at the widest position of the track 5, one end of the first side wall 411, which is far away from the second side wall 412, can limit the moving member 6, and the movement of the moving member 6 is guaranteed to be limited in the track 5; the clearance between the locking block 4 and the toothless ratchet 3 is not sufficient to accommodate the moving member 6.
Example one
In the present invention, as shown in fig. 2 and 5, the first track group 1001 is located on the right side of the second track group 1002 in the clockwise direction of the circumferential direction of the toothless ratchet 3. The first side wall 411 and the second side wall 412 of the groove of the first track set 1001 are sequentially arranged in a clockwise direction of the circumferential direction of the toothless ratchet 3; in the clockwise direction of the circumferential direction of the toothless ratchet 3, the track of the first track group 1001 is narrowed by a width. For the first track group 1001: when the ratchet wheel is applied, the toothless ratchet wheel 3 is sleeved on a screw cap, and the locking block 4 is pushed, so that the moving piece 6 is in contact with the locking block 4 and the toothless ratchet wheel 3; the moving piece 6 is located at one wide end of the rail 5, and the bidirectional wrench is in an unlocking state and cannot operate a nut; the wrench body 1 is rotated anticlockwise, the wrench body 1 applies reverse stress to the toothless ratchet wheel 3, the toothless ratchet wheel 3 rotates clockwise relative to the wrench body 1, the moving piece 6 rotates synchronously with the toothless ratchet wheel 3 and rotates clockwise around the toothless ratchet wheel 3 to the narrow end of the track 5, so that a clamping effect is generated between the moving piece and the locking block 4 and the toothless ratchet wheel 3, and the wrench body 1 is linked with the toothless ratchet wheel 3 to drive the nut to rotate.
When the wrench body 1 is rotated clockwise, the moving piece 6 moves towards the wide end of the rail 5, and the bidirectional wrench is unlocked. The locking block 4 is pushed, so that the moving member of the second track group 1002 is simultaneously contacted with the locking block 4 and the toothless ratchet wheel 3, and the wrench body 1 is continuously rotated clockwise, then the moving member of the second track group 1002 synchronously rotates along with the toothless ratchet wheel 3, and rotates anticlockwise around the toothless ratchet wheel 3 to the narrow end of the track of the second track group 1002, so that a clamping effect is generated between the moving member and the locking block 4 and the toothless ratchet wheel, and the wrench body 1 is linked with the toothless ratchet wheel 3 to drive the nut to rotate.
Example two
In the present invention, the first track group 1001 is located on the left side of the second track group 1002 in the clockwise direction of the circumferential direction of the toothless ratchet 3. The first side wall 411 and the second side wall 412 of the groove of the first track set 1001 are sequentially arranged along the counterclockwise direction of the circumferential direction of the toothless ratchet 3; in the counterclockwise direction of the circumferential direction of the toothless ratchet 3, the track of the first track group 1001 is narrowed by the width; in the clockwise direction of the circumferential direction of the toothless ratchet 3, the track of the first track group 1001 is widened from narrow to wide. For the first track group 1001: initially, the moving member 6 is located at one end of the rail 5, and the bidirectional wrench is in an unlocking state and cannot operate the nut; when the ratchet wheel is applied, the toothless ratchet wheel 3 is sleeved on a screw cap, and the locking block 4 is pushed, so that the moving piece 6 is in contact with the locking block 4 and the toothless ratchet wheel 3; the wrench body 1 is rotated clockwise, the wrench body 1 applies reverse stress to the toothless ratchet wheel 3, the toothless ratchet wheel 3 rotates anticlockwise relative to the wrench body 1, the moving piece 6 rotates synchronously with the toothless ratchet wheel 3 and rotates anticlockwise to the narrow end of the track 5 around the toothless ratchet wheel 3, so that a clamping effect is generated between the moving piece and the locking block 4 and the toothless ratchet wheel 3, and the wrench body 1 is linked with the toothless ratchet wheel 3 to drive the nut to rotate.
When the wrench body 1 is rotated anticlockwise, the moving piece 6 moves towards one end of the width of the rail 5, and the bidirectional wrench is unlocked. The locking block 4 is pushed, so that the moving member of the second track group 1002 is simultaneously contacted with the locking block 4 and the toothless ratchet wheel 3, and the wrench body 1 is continuously rotated anticlockwise, the moving member of the second track group 1002 synchronously rotates along with the toothless ratchet wheel 3 and clockwise rotates around the toothless ratchet wheel 3 to the narrow end of the track of the second track group 1002, so that a clamping effect is generated between the moving member and the locking block 4 and the toothless ratchet wheel 3, and the wrench body 1 is linked with the toothless ratchet wheel 3 to drive the nut to rotate.
Further, as shown in fig. 4, in the present invention, the wrench body 1 is provided with an accommodating groove 11 for accommodating the locking block 4 and the moving member 6, and the accommodating groove 11 is communicated with the accommodating hole 2 along the radial direction of the toothless ratchet 3, so that when the locking block 4 and the moving member 6 are assembled in the accommodating groove 11, the moving member 6 can contact with the toothless ratchet 3 to realize the transmission of the torque. The accommodating groove 11 forms an accommodating space and a limiting space for accommodating the locking block 4 and the moving piece 6; along the radial direction of the toothless ratchet wheel 3, the locking block 4 and the moving piece 6 are limited by the inner wall of the accommodating groove 11 and the toothless ratchet wheel 3 respectively; after the locking block 4 and the moving piece 6 are machined, only the locking block 4 and the moving piece 6 are assembled in the accommodating groove 11, and fixing pieces such as screws are not required to be installed; the assembly and disassembly are convenient, the assembly flow is greatly simplified, and the production cost is saved.
As shown in fig. 3, a cover plate 7 is arranged on the wrench body 1, and the cover plate 7 is used for shielding the accommodating groove 11; the cover plate 7 and the bottom of the accommodating groove 11 limit the locking block 4 and the moving piece 6 along the axial direction parallel to the toothless ratchet wheel 3.
Meanwhile, due to the arrangement of the accommodating groove 11, the moving member 6 is closer to the middle part of the peripheral surface of the toothless ratchet wheel 3 along the moving path of the toothless ratchet wheel 3, which is more beneficial for the toothless ratchet wheel 3 to drive the moving member 6 to move in the track 5.
As shown in fig. 1, a knob 100 is arranged on the wrench body 1, and the knob 100 is located on one side of the locking block 4 away from the toothless ratchet 3 and supports against the locking block 4; the knob 100 can rotate 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 set 1001 contacts with the inner wall of the accommodating groove 11, or the side wall of the locking block 4 close to the second track set 1002 contacts with the inner wall of the accommodating groove 11. When the locking block 4 is close to the side wall of one side of the first track group 1001 and contacts with the inner wall of the accommodating groove 11, the moving member of the first track group 1001 is respectively in contact with the locking block 4 and the toothless ratchet wheel 3, the side wall of one side of the locking block 4 close to the second track group 1002 is separated from the inner wall of the accommodating groove 11, and the moving member of the second track group 1002 cannot be simultaneously in contact with the toothless ratchet wheel 3 and the locking block 4. When the locking block 4 is close to the lateral wall of second track group 1002 one side with when the inner wall of holding tank 11 contacts, the moving member of second track group 1002 respectively with locking block 4 with toothless ratchet 3 contacts, locking block 4 is close to the lateral wall of first track group 1001 one side with the inner wall separation of holding tank 11, just the moving member of first track group 1001 not simultaneously with toothless ratchet 3 with locking block 4 contacts.
Therefore, in the present invention, the position of the locking block 4 is changed by rotating the knob 100, so as to realize the switching adjustment of the working states of the moving member of the first track group 1001 and the moving member of the second track group 1002.
The locking block 4 is a crescent locking block, the arc-shaped side wall with large curvature of the crescent locking block is far away from the toothless ratchet wheel 3, and the arc-shaped side wall with large curvature of the crescent locking block is close to the toothless ratchet wheel 3. As shown in fig. 2 and 5, the middle of the arc-shaped side wall with the large curvature of the crescent-shaped locking block is provided with a first groove 200, that is, the side of the locking block 4 away from the toothless ratchet 3 is provided with a first groove 200, and the first groove 200 is arranged in a concave manner towards the toothless ratchet 3. As shown in fig. 5, the first groove 200 includes a first curved sidewall 201 and a second curved sidewall 202 connected together, wherein the first curved sidewall 201 is adjacent to the first track set 1001 and the second curved sidewall 202 is adjacent 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. 5 and 11, the knob 100 supports against the first arc-shaped sidewall 201, so that the outer wall of the locking block 4 on the side close to the first track set 1001 can contact with the inner wall of the receiving groove 11. As shown in fig. 3 and 5, when the knob 100 is rotated clockwise to the maximum stroke, the knob 100 supports against the second arc-shaped side wall 202, so that the outer wall of the locking block 4 on the side close to the second track set 1002 can contact with the inner wall of the receiving groove 11.
As shown in fig. 9 and 10, the knob 100 includes a knob body 110, a dial pin 130, and an elastic member 120; the knob body 110 is rotatably connected with the wrench body 1, and the knob body 110 is provided with a mounting hole 111; one end of the toggle 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 toggle pin 130 is located outside the mounting hole 111 and inside the first groove 200; the toggle pin 130 supports the locking block 4.
Since the distance between the knob 100 and the first and second arc-shaped side walls 201 and 202 is changed when the knob 100 moves to push against the locking block 4, the toggle pin 130 can contact and push against the locking block no matter how the locking block 4 moves; in the present invention, the elastic member 120 is always in a compressed state, so as to ensure that the elastic member 120 always generates a supporting force on the locking block 4, so that the knob 100 can position the locking block 4 in a state where the moving member of the first track set 1001 operates, or in a state where the moving member of the second track set 1002 operates; only through the rotation knob 100, can make the latch segment 4 be in the holding tank 11 internalization, and then realize operating condition's adjustment, will the moving member of first track group 1001 is by operating condition adjustment to non-operating condition, or will the moving member of second track group 1002 is by operating condition adjustment to non-operating condition.
When the moving pin 130 contacts the first arc-shaped sidewall 201, as shown in fig. 2, 5 and 11, the knob body 110 rotates counterclockwise to the maximum stroke, the moving member of the first track set 1001 contacts the locking block 4 and the toothless ratchet 3 at the same time, and the moving member of the second track set 1002 does not contact the toothless ratchet 3 and the locking block 4 at the same time; when the moving pin 130 contacts the second arc-shaped sidewall 202, as shown in fig. 2, 3 and 5, the knob body 110 rotates clockwise to the maximum stroke, the moving member of the second track group 1002 contacts the locking block 4 and the toothless ratchet 3 at the same time, and the moving member of the first track group 1001 does not contact the toothless ratchet 3 and the locking block 4 at the same time.
As shown in fig. 4, a second receiving groove 300 is formed in the wrench body 1, and the second receiving groove 300 is located on a side of the receiving groove 11 away from the toothless ratchet 3 and is communicated with the receiving groove 11; the knob body 110 is partially positioned in the second receiving groove 300 and partially positioned in the receiving groove 11; the toggle pin 130 is located in the receiving groove 11 to support the locking block 4.
In an 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. As shown in fig. 3, two arc-shaped retainers 10 are arranged between the locking block 4 and the toothless ratchet 3; the arc-shaped retainer 10 is provided with through holes 101 which correspond to the rollers one by one; the through hole 101 penetrates through the arc-shaped retainer 10 along the radial direction of the toothless ratchet 3 and extends along the axial direction of the roller; the rollers are located in the through holes 101 and are rotatable relative to the arc-shaped holder 10.
Of the two arc-shaped retainers 10, one arc-shaped retainer is positioned in a track formed between the groove of the first track group 1001 and the toothless ratchet wheel 3, and the other arc-shaped retainer is positioned in a track formed between the groove of the second track group 1002 and the toothless ratchet wheel 3; the two arc-shaped retainers 10 have the same structure and the same working principle, and the following description will be made by taking the arc-shaped retainer in the track formed between the groove of the first track group 1001 and the toothless ratchet 3 as an example:
as shown in fig. 6 and 7, at least one through hole 101 is formed in the arc-shaped holder 10, and the through holes 101 correspond to the rollers one to one; the through hole 101 penetrates the arc-shaped holder 10 in the radial direction of the toothless ratchet 3 and extends in the axial direction of the roller to be able to accommodate the roller therein. The curvature of the arc-shaped retainer 10 is the same as that of the toothless ratchet wheel 3; when the rollers rotate around the toothless ratchet wheel 3, the arc-shaped retainer 10 rotates synchronously with the rollers.
The arc-shaped retainer 10 limits the roller through the through hole 101, so that when the roller moves in the track 5, the central axis of the roller is always parallel to the central axis of the toothless ratchet wheel 3, and the roller is prevented from being skewed to cause the bidirectional wrench to be incapable of locking. Meanwhile, the arc-shaped retainer 10 limits the roller, so that the moving path of the roller along the appearance surface of the toothless ratchet 3 is positioned in the middle of the appearance surface of the toothless ratchet 3, and therefore when the toothless ratchet 3 rotates in an unlocking state, the roller and the arc-shaped retainer 10 can be driven to rotate, and idling of the toothless ratchet 3 is avoided.
The side wall of the through hole 101 is arc-shaped so as to match with the circular appearance surface of the roller; a gap is formed between the side wall of the through hole 101 and the roller, so that the roller can roll along the appearance surface of the toothless ratchet wheel 3 under the driving of the toothless ratchet wheel 3. When the bidirectional wrench is in an unlocking state and the toothless ratchet wheel 3 rotates, the roller rotates in a direction opposite to that of the toothless ratchet wheel 3 and revolves around the toothless ratchet wheel 3 in the same direction.
As shown in fig. 3 and 8, the cover plate 7 includes a cover plate body 71 and a collar 72, the cover plate body 71 is used for shielding the receiving groove 11, and the collar 72 is sleeved on the toothless ratchet 3; after the locking block 4, the moving member 6 and the arc-shaped retainer 10 are assembled into the accommodating groove 11, the lantern ring 72 is sleeved on the toothless ratchet 3, and meanwhile, the cover plate body 71 covers the accommodating groove 11.
As shown in fig. 8, an annular limiting groove 31 is formed in the toothless ratchet 3, a snap spring 9 is further arranged in the annular limiting groove 31, the snap spring 9 is in contact with the sleeve ring 72 and limits the sleeve ring 72, and the sleeve ring 72 is prevented from being separated from the toothless ratchet 3.
The inner hole of the toothless ratchet wheel 3 forms a multi-sharp-angle star-shaped pattern which is suitable for nuts with various shapes; in one embodiment, the inner hole of the toothless ratchet 3 is a hexagonal hole or a dodecagonal hole.
In summary, the invention provides a bidirectional wrench, which comprises a wrench body, wherein a toothless ratchet wheel is rotatably connected to the wrench body, a locking block is movably connected to one side of the wrench body along the radial direction of the toothless ratchet wheel, and two track groups are arranged on the locking block at intervals along the circumferential direction of the toothless ratchet wheel; the track group comprises a plurality of grooves which are arranged along the circumferential direction of the toothless ratchet wheel, a track is formed between the grooves and the toothless ratchet wheel, moving parts are arranged in the track, and the track is in an involute shape along the circumferential direction of the toothless ratchet wheel; when the moving piece of one track group is simultaneously contacted with the locking block and the toothless ratchet wheel, the moving piece of the other track group is not simultaneously contacted with the locking block and the toothless ratchet wheel; when the wrench body is rotated from different directions, the normal work of the bidirectional wrench can be realized.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (10)
1. A bidirectional wrench comprises a wrench body, wherein a toothless ratchet wheel is rotatably connected to the wrench body, and the bidirectional wrench is characterized in that a locking block is movably connected to one side of the wrench body along the radial direction of the toothless ratchet wheel, and two track groups are arranged on the locking block at intervals along the circumferential direction of the toothless ratchet wheel; the track group comprises a plurality of grooves which are arranged along the circumferential direction of the toothless ratchet wheel, a track is formed between the grooves and the toothless ratchet wheel, moving parts are arranged in the track, and the track is in an involute shape along the circumferential direction of the toothless ratchet wheel; when the moving piece of one track group is simultaneously contacted with the locking block and the toothless ratchet wheel, the moving piece of the other track group is not simultaneously contacted with the locking block and the toothless ratchet wheel.
2. The reversible wrench as claimed in claim 1, wherein the width of the narrow end of the track is less than the width of the movable member when the movable member is in contact with the locking segment and the toothless ratchet, respectively; the width of the wide end of the track is larger than the width of the moving part.
3. The reversible wrench as claimed in claim 1, wherein when said moving member is in contact with said locking blocks and said toothless ratchet, respectively, and said moving member is located at one end of said track width, said moving member is in contact with said locking blocks and said toothless ratchet, respectively, to rotate around said toothless ratchet in accordance with the rotation of said toothless ratchet.
4. The bidirectional wrench as claimed in claim 1, wherein the wrench body is provided with a knob, the knob is located on one side of the locking block away from the toothless ratchet wheel and supports the locking block; the knob can rotate relative to the wrench body so as to prop the locking block to move.
5. The bidirectional wrench as claimed in claim 4, wherein the wrench body is provided with a receiving groove, and the locking block and the moving member 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 is in contact with the inner wall of the accommodating groove, the moving piece of the track group is simultaneously in contact with the locking block and the toothless ratchet wheel.
6. The reversible wrench as claimed in claim 1, wherein the recess includes a first side wall and a second side wall sequentially arranged and connected along a circumferential direction of the toothless ratchet wheel, the first side wall and the second side wall are both arc-shaped, and a curvature of the first side wall is greater than a curvature of the second side wall.
7. The reversible wrench as claimed in claim 1, wherein the moving member is a ball.
8. The reversible wrench as claimed in claim 1, wherein the mover is a roller having a central axis parallel to a central axis of the toothless ratchet.
9. The reversible wrench as claimed in claim 8, in which the track has an arcuate retainer disposed therein; the arc-shaped retainer is provided with through holes which correspond to the rollers one by one; the through hole penetrates through the arc-shaped retainer along the radial direction of the toothless ratchet wheel and extends along the axial direction of the roller; the roller is positioned in the through hole and can rotate relative to the arc-shaped retainer.
10. The reversible wrench as claimed in claim 9, wherein said arcuate cage rotates synchronously with said roller as said roller rotates about said toothless ratchet.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911425640.6A CN111070144A (en) | 2019-12-31 | 2019-12-31 | Bidirectional wrench |
| PCT/CN2020/097560 WO2021135093A1 (en) | 2019-12-31 | 2020-06-23 | Bidirectional wrench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911425640.6A CN111070144A (en) | 2019-12-31 | 2019-12-31 | Bidirectional wrench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111070144A true CN111070144A (en) | 2020-04-28 |
Family
ID=70321583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911425640.6A Pending CN111070144A (en) | 2019-12-31 | 2019-12-31 | Bidirectional wrench |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111070144A (en) |
| WO (1) | WO2021135093A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111899656A (en) * | 2020-08-20 | 2020-11-06 | 惠州市奥拓电子科技有限公司 | Front maintenance tool suitable for different splicing angles |
| WO2021135093A1 (en) * | 2019-12-31 | 2021-07-08 | 深圳技术大学 | Bidirectional wrench |
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|---|---|---|---|---|
| DE202009006765U1 (en) * | 2009-05-11 | 2009-07-30 | Lin, Chien-Yueh, Dali City | Bidirectional ratchet wrench |
| CN106944958A (en) * | 2016-01-07 | 2017-07-14 | 游荣基 | Toothless ratchet wrench |
| TW201726327A (en) * | 2016-01-19 | 2017-08-01 | Jonnex Mao International Co Ltd | Hand tool comprising a tool body, a head, two rolling parts and a commutation unit |
| US20200070319A1 (en) * | 2018-09-04 | 2020-03-05 | Chih-Min Chang | Two-way ratchet wrench |
| CN211491270U (en) * | 2019-12-31 | 2020-09-15 | 深圳技术大学 | Bidirectional wrench |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101683727B (en) * | 2008-09-28 | 2012-06-27 | 胡厚飞 | Slip type reversing ratchet wrench |
| JP5356489B2 (en) * | 2011-10-18 | 2013-12-04 | 志拓有限公司 | Ratchet wrench |
| CN103085012B (en) * | 2013-01-26 | 2016-02-24 | 上海齐迈五金有限公司 | A kind of can the dual-purpose ratchet spanner of bidirectional modulation |
| US10016880B2 (en) * | 2016-10-10 | 2018-07-10 | Hui-Hsueh Chung | Selectively one-way wrench |
| CN111070144A (en) * | 2019-12-31 | 2020-04-28 | 深圳技术大学 | Bidirectional wrench |
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2019
- 2019-12-31 CN CN201911425640.6A patent/CN111070144A/en active Pending
-
2020
- 2020-06-23 WO PCT/CN2020/097560 patent/WO2021135093A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202009006765U1 (en) * | 2009-05-11 | 2009-07-30 | Lin, Chien-Yueh, Dali City | Bidirectional ratchet wrench |
| CN106944958A (en) * | 2016-01-07 | 2017-07-14 | 游荣基 | Toothless ratchet wrench |
| TW201726327A (en) * | 2016-01-19 | 2017-08-01 | Jonnex Mao International Co Ltd | Hand tool comprising a tool body, a head, two rolling parts and a commutation unit |
| US20200070319A1 (en) * | 2018-09-04 | 2020-03-05 | Chih-Min Chang | Two-way ratchet wrench |
| CN211491270U (en) * | 2019-12-31 | 2020-09-15 | 深圳技术大学 | Bidirectional wrench |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021135093A1 (en) * | 2019-12-31 | 2021-07-08 | 深圳技术大学 | Bidirectional wrench |
| CN111899656A (en) * | 2020-08-20 | 2020-11-06 | 惠州市奥拓电子科技有限公司 | Front maintenance tool suitable for different splicing angles |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021135093A1 (en) | 2021-07-08 |
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