CN212643363U - Ratchet applied to bidirectional ratchet structure - Google Patents
Ratchet applied to bidirectional ratchet structure Download PDFInfo
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- CN212643363U CN212643363U CN202020682383.6U CN202020682383U CN212643363U CN 212643363 U CN212643363 U CN 212643363U CN 202020682383 U CN202020682383 U CN 202020682383U CN 212643363 U CN212643363 U CN 212643363U
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Abstract
The utility model discloses a ratchet applied to a bidirectional ratchet structure, which comprises a pin shaft, a clockwise ratchet and an anticlockwise ratchet; the clockwise ratchet is sleeved on the pin shaft and can rotate around the clockwise ratchet; the anticlockwise ratchet is sleeved on the pin shaft and can rotate around the anticlockwise ratchet, and the anticlockwise ratchet is elastically connected with the clockwise ratchet and can rotate relatively. The utility model discloses a bidirectional ratchet mechanism, which can realize bidirectional torque transmission of a bidirectional ratchet structure; the clockwise ratchet and the anticlockwise ratchet can alternately extend into gaps between the convex teeth in the ratchet, so that the rack can rotate relative to the ratchet, and the number of relative rotation cycles is not limited; infinite convolution can be realized; the end faces of the clockwise ratchets and the anticlockwise ratchets are in contact with the side wall face in the ratchet wheel, and the ratchets can simultaneously extend into gaps between the protruding teeth, so that the transmittable torque is large.
Description
Technical Field
The utility model relates to a ratchet technical field especially relates to be applied to ratchet of two-way ratchet structure.
Background
Ratchets are common elements used in industry and function as mechanical mechanisms to maintain a single direction of power output for linear reciprocating or rotary motion to prevent the transmission from reversing. The pawl is matched with the ratchet wheel to prevent the ratchet wheel from reversing. The ratchet structure is mostly one-way transmission.
At present, a bidirectional ratchet wheel disclosed in chinese patent No. CN103775538B is provided, in which a ratchet wheel outer ring, a ratchet wheel inner ring and a cam mechanism are coaxially mounted, the ratchet wheel outer ring and the ratchet wheel inner ring share a common axis and are rotationally connected through balls, n ratchet mechanisms are uniformly connected to an outer edge of the ratchet wheel inner ring, n is 2 to 20, the cam mechanism is rotationally connected to the ratchet wheel inner ring, and circular-arc ratchets in each ratchet mechanism are retractable relative to ratchet tooth grooves of the ratchet wheel outer ring. When the bidirectional ratchet wheel transmits clockwise torque or anticlockwise torque, the arc-shaped ratchet extends into the ratchet tooth groove, and if the hub of the inner ring of the ratchet wheel and the outer ring of the ratchet wheel need to rotate relatively, the cam mechanism needs to be manually adjusted; the arc-shaped ratchet teeth are manually extended out of the ratchet tooth grooves, otherwise, the machine frame cannot rotate back.
Disclosure of Invention
In order to overcome the defects in the prior art, the ratchet applied to the bidirectional ratchet structure is provided, so that the frame in the bidirectional ratchet structure can rotate relative to the ratchet, the number of the relative rotation cycles is not limited, when torque is transmitted, the end surface of the ratchet is in contact with the side wall surface in the ratchet, and the transmittable torque is large.
The utility model provides a technical scheme that its technical problem adopted is:
be applied to ratchet of two-way ratchet structure, its characterized in that includes:
a pin shaft;
clockwise ratchets; the clockwise ratchet is sleeved on the pin shaft and can rotate around the clockwise ratchet;
a counterclockwise ratchet; the anticlockwise ratchet is sleeved on the pin shaft and can rotate around the anticlockwise ratchet, and the anticlockwise ratchet is elastically connected with the clockwise ratchet and can rotate relatively.
Preferably, the spring piece is further included, the pin shaft is clamped by the spring piece, and two ends of the spring piece are connected with the clockwise ratchet and the anticlockwise ratchet respectively.
Preferably, the clockwise ratchet and the counterclockwise ratchet each include an abutment and a connecting portion; the connecting parts in the clockwise ratchet and the anticlockwise ratchet are sleeved on the pin shaft.
Preferably, the connecting portion of the clockwise ratchet is hollow cylindrical.
Preferably, the connecting part of the counterclockwise ratchet teeth comprises a first part and a second part, the first part and the second part are arranged at intervals and are connected with the abutting parts in the counterclockwise ratchet teeth; the first member and the second member are both hollow cylindrical.
Preferably, the clockwise ratchet middle connecting part is positioned in the gap between the first component and the second component.
Preferably, the abutment portion and the connecting portion in the clockwise ratchet are integrally formed.
Preferably, the abutment portion and the connecting portion in the counterclockwise ratchet are integrally formed.
Preferably, the clockwise ratchet and the anticlockwise ratchet both have circular arc outer surfaces, and the end surfaces of the clockwise ratchet and the anticlockwise ratchet are both flat surfaces.
Preferably, the abutments of the clockwise ratchet and the counterclockwise ratchet are provided with a first guide lever and a second guide lever, respectively.
The utility model discloses following beneficial effect has at least.
1. The bidirectional ratchet mechanism is applied to a bidirectional ratchet mechanism, and the bidirectional ratchet structure can transmit torque in two directions.
2. The clockwise ratchet and the anticlockwise ratchet can alternately extend into gaps between the convex teeth in the ratchet wheel, so that the rack can rotate relative to the ratchet wheel, and the number of relative rotation cycles is not limited; infinite convolution can be realized.
3. The end faces of the clockwise ratchets and the anticlockwise ratchets are in contact with the side wall face in the ratchet wheel, and the ratchets can simultaneously extend into gaps between the protruding teeth, so that the transmittable torque is large.
Drawings
Fig. 1 is a schematic perspective view of an embodiment of a bidirectional ratchet structure.
FIG. 2 is an exploded view of the bidirectional ratchet structure of the embodiment.
FIG. 3 is a schematic diagram of the bidirectional ratchet structure without the driving shaft in the embodiment.
Fig. 4 is a schematic structural diagram of the rack in the embodiment.
FIG. 5 is a schematic view showing the structure of the ratchet according to the embodiment.
FIG. 6 is a schematic structural view of a guide plate in the embodiment.
Fig. 7 is a schematic structural diagram of another view angle of fig. 5.
Fig. 8 is an exploded view of the ratchet in the embodiment.
100, a frame; 110. a body; 120. a support; 130. a ratchet; 131. clockwise ratchets; 132. a counterclockwise ratchet; 140. a first guide bar; 141. a first stopper; 150. a second guide bar; 151. a second limiting block; 200. a ratchet wheel; 210. a groove; 220. a protruding tooth; 300. a guide plate; 310. A first guide groove; 311. a first stage; 312. a second stage; 320. a second guide groove; 330. an inner disc; 340. an outer disc; 350. a connecting rod; 400. a drive shaft; 10. a pin shaft; 20. a spring plate; 221. a side wall; a. an outer surface of a circular arc; b. an end face; 30. an abutting portion; 40. a connecting portion; 41. a first member; 42 second component.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
Referring to fig. 1 to 8, the present invention discloses a ratchet applied to a bidirectional ratchet structure, which includes a pin 10, a clockwise ratchet 131 and an anticlockwise ratchet 132; the clockwise ratchet 131 is sleeved on the pin shaft 10 and can rotate around the clockwise ratchet 131; the counterclockwise ratchet 132 is sleeved on the pin 10 and can rotate around the counterclockwise ratchet 132, and the counterclockwise ratchet 132 is elastically connected with the clockwise ratchet 131 and can rotate relatively.
Since the clockwise ratchet 131 and the counterclockwise ratchet 132 can be relatively rotated, one of the clockwise ratchet 131 and the counterclockwise ratchet 132 can be rotated while remaining stationary.
The ratchet 130 is applied to a bidirectional ratchet structure that can realize infinite rotation.
In the present embodiment, the bidirectional ratchet structure includes a frame 100, a ratchet 200, a guide disc, and a driving shaft; the ratchet wheel 200 is movably connected with the guide disc; the frame 100 extends into the ratchet 200 and engages the ratchet 200.
The driving shaft is connected with the frame 100 and can drive the ratchet wheel 200 to rotate; the structure of the frame 100 is adjustable, and the rotation direction of the ratchet wheel 200 driven by the frame 100 can be switched by adjusting the frame 100.
The rack 100 is located in the ratchet 200 and can rotate clockwise relative to the ratchet 200, and after the structure of the rack 100 is adjusted, the rack 100 can also rotate counterclockwise relative to the ratchet 200.
The frame 100 is substantially hollow cylindrical; which includes a body 110, a plurality of brackets 120 provided on the body 110, and a plurality of ratchet teeth 130; a plurality of ratchet teeth 130 are circumferentially distributed on the outer wall of the body 110 and rotatably connected with the bracket 120; a first guide rod 140 and a second guide rod 150 are respectively arranged at two ends of the ratchet 130;
the ratchet wheel 200 is provided with a groove 210, and the inner wall of the groove 210 is provided with a plurality of circumferentially arranged protruding teeth 220; the rack 100 is arranged in the groove 210, and one end of the ratchet 130 extends into the gap between the adjacent protruding teeth 220;
the guide disc is provided with a first guide groove 310 and a second guide groove 320, the first guide rod 140 and the second guide rod 150 respectively pass through the first guide groove 310 and the second guide groove 320, and the first guide rod 140 and the second guide rod 150 respectively slide in the first guide groove 310 and the second guide groove 320 to switch a state where both ends of the ratchet 130 respectively extend into a gap between the protruding tooth 220 and the protruding tooth 220.
When the guide disc is rotated, the first guide groove 310 and the second guide groove 320 slide relative to the first guide rod 140 and the second guide rod 150, respectively; so that the frame 100 and the ratchet 200 rotate relatively, and the ratchet 130 swings; if the initial state is that the left end of the ratchet 130 extends into the gap between the protruding tooth 220 and the protruding tooth 220; the driving shaft rotates forward to drive the rack 100 to rotate and drive the ratchet wheel 200 to rotate clockwise, and at this time, if the driving shaft rotates reversely, the driving shaft drives the rack 100 to rotate, so that the rack 100 rotates counterclockwise relative to the ratchet wheel 200 (the ratchet wheel 200 is in a stationary state); by adjusting the frame 100, the right end of the ratchet 130 extends into the gap between the protruding tooth 220 and the protruding tooth 220; the reverse rotation of the driving shaft can drive the frame 100 to rotate and drive the ratchet wheel 200 to rotate counterclockwise, and at the moment, if the driving shaft rotates clockwise; the driving shaft drives the rack 100 to rotate, so that the rack 100 rotates clockwise (the ratchet 200 is in a stationary state).
A plurality of brackets 120 are arranged in pairs and circumferentially distributed on the body 110; the pair of brackets 120 are vertically distributed on the outer wall of the body 110, and the ratchet 130 is connected to the pair of brackets 120 and can swing with the pair of racks 100.
When the ratchet 130 swings, two ends of the switchable ratchet 130 extend into the gaps between the protruding teeth 220 and the protruding teeth 220; specifically, only the left end of the ratchet 130 extends into the gap between the protruding teeth 220 and the protruding teeth 220, or only the right end of the ratchet 130 extends into the gap between the protruding teeth 220 and the protruding teeth 220.
The ratchet 130 includes a clockwise ratchet 131 and a counterclockwise ratchet 132, the clockwise ratchet 131 is hinged and elastically connected to the counterclockwise ratchet 132, the clockwise ratchet 131 is connected to the first guide bar 140, and the counterclockwise ratchet 132 is connected to the second guide bar 150.
In the present embodiment, the clockwise ratchet 131 is at the left end of the ratchet teeth 130, and the counterclockwise ratchet 132 is at the right end of the ratchet teeth 130; when the clockwise ratchet 131 is in the gap between the protruding tooth 220 and the protruding tooth 220, the end surface b of the clockwise ratchet 131 abuts against the protruding tooth 220; when the counterclockwise ratchet 132 is in the gap between the protruding tooth 220 and the protruding tooth 220, the end surface b of the counterclockwise ratchet 132 abuts against the protruding tooth 220.
In the present embodiment, the protruding teeth 220 are circumferentially distributed on the inner wall of the groove 210, the plurality of ratchet teeth 130 are also circumferentially distributed on the outer periphery of the body 110, and the clockwise ratchet teeth 131 and the counterclockwise ratchet teeth 132 of the ratchet teeth 130 can alternately extend into the gaps between the adjacent protruding teeth 220; the clockwise ratchet teeth 131 in all the ratchet teeth 130 can simultaneously extend into the gaps of the adjacent protruding teeth 220; the counterclockwise ratchet teeth 132 of all ratchet teeth 130 may also simultaneously protrude into the gap between adjacent lobes 220, as compared to a conventional pawl and ratchet 200 fit; the ratchet 200 of the present application is designed to transmit much greater torque during transmission.
The ratchet 130 further includes a pin 10, the pin 10 passes through the clockwise ratchet 131 and the counterclockwise ratchet 132, and both ends of the pin 10 are fixed to the pair of brackets 120.
The clockwise ratchet 131 and the counterclockwise ratchet 132 are rotatably connected to the pin 10.
In this embodiment, both the clockwise ratchet 131 and the counterclockwise ratchet 132 can rotate relative to the pin 10.
The ratchet 130 further includes a spring plate, the spring plate clamps the pin 10, and two ends of the spring plate are respectively connected to the clockwise ratchet 131 and the counterclockwise ratchet 132.
The clockwise ratchet 131 and the counterclockwise ratchet 132 are connected through a spring plate, and when the clockwise ratchet 131 and the counterclockwise ratchet 132 are relatively rotated, the spring force of the spring plate 20 can make the clockwise ratchet 131 and the counterclockwise ratchet 132 perform reset rotation, so that the shape of the entire ratchet 130 is restored to the original shape.
Specifically, when the clockwise ratchet teeth 131 are in the gaps between the adjacent teeth 220, the counterclockwise ratchet teeth 132 are out of the gaps between the adjacent teeth 220. At this time, the driving shaft can drive the rack 100 to drive the ratchet 200 to rotate clockwise; if the driving shaft rotates counterclockwise, the frame 100 can rotate counterclockwise along with the driving shaft relative to the ratchet 200; because the clockwise ratchet 131 extends into the gap between the adjacent protruding teeth 220 in the ratchet 200, the protruding teeth 220 will contact with the arc outer surface a of the clockwise ratchet 131 during the counterclockwise rotation of the rack 100; and the clockwise ratchet 131 is extruded out of the gap between the adjacent protruding teeth 220, so that the relative movement between the rack 100 and the ratchet 130 is realized, when the clockwise ratchet teeth 131 are pushed out of the gaps between the adjacent protruded teeth 220, the spring plate 20 is deformed, when the clockwise ratchet 131 rotates to the vicinity of the gap between the next lobe 220 and the lobe 220, the elastic force of the spring plate 20 can reset the clockwise ratchet 131 to extend into the gap of the adjacent convex tooth 220, so as to reciprocate, realize the relative rotation of the frame 100 and the ratchet 200, when the teeth 220 push the clockwise ratchet teeth 131 out of the gaps between adjacent teeth 220, the clockwise ratchet 131 slides along the first section 311 of the first guide groove 310, and the counterclockwise ratchet 132 is restricted in its displacement by the second section 312 of the second guide groove 320, therefore, the counterclockwise ratchet 132 does not erroneously extend into the gap between the adjacent teeth 220 to stop the relative rotation between the rack 100 and the ratchet 200.
Similarly, the counterclockwise ratchet 132 extends into the gap between adjacent teeth 220;
the driving shaft can drive the rack 100 to drive the ratchet wheel 200 to rotate anticlockwise; if the driving shaft rotates clockwise, the frame 100 can rotate clockwise along with the driving shaft relative to the ratchet 200; because the counterclockwise ratchet 132 extends into the gap between the adjacent protruding teeth 220 in the ratchet 200, the protruding teeth 220 will contact with the arc outer surface a of the counterclockwise ratchet 132 during the clockwise rotation of the rack 100; and the counterclockwise ratchet 132 is pushed out of the gap between the adjacent protruding teeth 220, so that the relative movement between the machine frame 100 and the ratchet 130 is realized, when the counterclockwise ratchet 132 is pushed out of the gap between the adjacent inter-teeth 220, the spring plate 20 is deformed, when the counterclockwise ratchet 132 is rotated to the vicinity of the gap between the next lobe 220 and the lobe 220, the elastic force of the spring plate 20 can reset the counterclockwise ratchet 132 to extend into the gap between the adjacent protruding teeth 220, and thus, the relative rotation between the rack 100 and the ratchet 200 is realized, when the teeth 220 force the counterclockwise ratchet teeth 132 out of the gaps between adjacent teeth 220, the counterclockwise ratchet 132 slides along the first section 311 in the second guide groove 320, and the clockwise ratchet 131 is restricted in its displacement by the second section 312 of the first guide groove 310, therefore, the clockwise ratchet 131 does not erroneously extend into the gap between the adjacent teeth 220 to stop the relative rotation of the rack 100 and the ratchet 200.
The arc outer surfaces a of the clockwise ratchet teeth 131 and the counterclockwise ratchet teeth 132 in the ratchet teeth 130 are smooth arc surfaces, and are not hindered when the protruding teeth 220 extrude the clockwise ratchet teeth 131 or the counterclockwise ratchet teeth 132 out of the gaps between the adjacent protruding teeth 220, the end surfaces b of the clockwise ratchet teeth 131 and the counterclockwise ratchet teeth 132 are planes, the side walls 221 of the protruding teeth 220 are also planes, and when the clockwise ratchet teeth 131 or the counterclockwise ratchet teeth 132 extend into the gaps between the adjacent protruding teeth 220; the end surface b of the clockwise ratchet tooth 131 or the counterclockwise ratchet tooth 132 abuts against the side wall 221 of one of the connected protruding teeth 220.
The specific structure of the clockwise ratchet 131 and the counterclockwise ratchet 132 is as follows:
the clockwise ratchet teeth 131 and the counterclockwise ratchet teeth 132 each include an abutting portion 30 and a connecting portion 40; the connecting parts 40 of the clockwise ratchet 131 and the counterclockwise ratchet 132 are sleeved on the pin shaft 10. The abutment 30 and the connecting portion 40 in the clockwise ratchet 131 are integrally formed. The abutment portion 30 and the connecting portion 40 in the counterclockwise ratchet 132 are integrally formed.
The connecting portion 40 of the clockwise ratchet 131 has a hollow cylindrical shape. The connecting part 40 of the counterclockwise ratchet 132 comprises a first part 41 and a second part 42, the first part 41 is arranged at a distance from the second part 42 and is connected with the abutting part 40 in the counterclockwise ratchet 132; the first member 41 and the second member 42 are each hollow cylindrical.
The connecting portion 40 of the clockwise ratchet 131 is located in the gap between the first member 41 and the second member 42.
In this embodiment, the overall length of the ratchet 130 is greater than the gap distance between the protruding teeth 220 and the protruding teeth 220, so that at most only one end of the ratchet 130 extends into the gap between the adjacent protruding teeth 220; either the clockwise ratchet teeth 131 extend into the gaps between adjacent teeth 220 or the counterclockwise ratchet teeth 132 extend into the gaps between adjacent teeth 220.
The end of the first guide rod 140 is provided with a first stopper 141 for preventing the first guide rod 140 from extending out of the first guide groove 310; the end of the second guide bar 150 is provided with a second stopper 151 for preventing the second guide bar 150 from protruding from the second guide groove 320.
The first stopper 141 and the second stopper 151 are sized not to protrude from the first guide groove 310; the second stopper 151 is sized not to protrude from the second guide groove 320.
The first guide groove 310 and the second guide groove 320 both include a first section 311 and a second section 312, the first section 311 is an arc-shaped groove with the position point of the pin shaft 10 projected on the outer disc 340 as the center of circle; the second section 312 is a chute; one end of the inclined groove close to the periphery of the outer disc 340 is communicated with one end of the arc-shaped groove close to the periphery of the outer disc 340.
The guide disc comprises an inner disc 330, an outer disc 340 and a plurality of connecting rods, the first guide groove 310 and the second guide groove 320 are positioned on the outer disc 340, the plurality of connecting rods are circumferentially arranged, and two ends of each connecting rod are respectively connected with the inner disc 330 and the outer disc 340; the guide plate extends into the groove 210, and the lower surface of the guide plate protrudes from the lower surface of the ratchet 200.
The driving shaft sequentially passes through the guide disc and the rack 100 and is connected with the rack 100 in a key mode.
The utility model discloses a two-way ratchet structure can use some to have the unlimited device of the demand of circling round, for example, use in the bicycle, the rear wheel of bicycle has the unlimited demand of circling round.
The utility model discloses a bidirectional ratchet structure, two ends of a ratchet 130 in a frame 100 can alternately extend into the clearance of adjacent convex teeth 220 in a ratchet 200, and can bidirectionally transmit torque; in addition, the frame 100 is rotatable relative to the ratchet 200, and the number of relative rotation cycles is not limited, and when torque is transmitted, the end surfaces of the ratchet teeth 130 are in surface contact with the side walls 221 of the ratchet 200, and the transmittable torque is large.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (10)
1. Be applied to ratchet of two-way ratchet structure, its characterized in that includes:
a pin shaft;
clockwise ratchets; the clockwise ratchet is sleeved on the pin shaft and can rotate around the clockwise ratchet;
a counterclockwise ratchet; the anticlockwise ratchet is sleeved on the pin shaft and can rotate around the anticlockwise ratchet, and the anticlockwise ratchet is elastically connected with the clockwise ratchet and can rotate relatively.
2. The ratchet applied to the bidirectional ratchet structure according to claim 1, further comprising a spring plate, wherein the spring plate clamps the pin shaft, and two ends of the spring plate are respectively connected with the clockwise ratchet and the counterclockwise ratchet.
3. The ratchet applied to the bidirectional ratchet structure according to claim 1, wherein each of the clockwise ratchet and the counterclockwise ratchet comprises an abutting portion and a connecting portion; the connecting parts in the clockwise ratchet and the anticlockwise ratchet are sleeved on the pin shaft.
4. The ratchet applied to the bidirectional ratchet structure according to claim 3, wherein the connecting portion of the clockwise ratchet is a hollow cylinder.
5. The ratchet applied to the bidirectional ratchet structure according to claim 3, wherein the connecting portion of the counterclockwise ratchet tooth comprises a first member and a second member, the first member and the second member being spaced apart from each other and connected to the abutting portion of the counterclockwise ratchet tooth; the first member and the second member are both hollow cylindrical.
6. The ratchet applied to the bidirectional ratchet structure according to claim 5, wherein the connecting portion of the clockwise ratchet is located in the gap between the first member and the second member.
7. The ratchet applied to the bidirectional ratchet structure according to claim 3, wherein the abutting portion and the connecting portion of the clockwise ratchet are integrally formed.
8. The ratchet applied to the bidirectional ratchet structure according to claim 3, wherein the abutting portion and the connecting portion of the counterclockwise ratchet are integrally formed.
9. The ratchet applied to the bidirectional ratchet structure according to any one of claims 1 to 8, wherein the clockwise ratchet and the counterclockwise ratchet each have a circular arc outer surface, and end surfaces of the clockwise ratchet and the counterclockwise ratchet are each a plane.
10. The ratchet applied to the bidirectional ratchet structure according to claim 1, wherein the abutting portions of the clockwise ratchet and the counterclockwise ratchet are provided with a first guide bar and a second guide bar, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020682383.6U CN212643363U (en) | 2020-04-28 | 2020-04-28 | Ratchet applied to bidirectional ratchet structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020682383.6U CN212643363U (en) | 2020-04-28 | 2020-04-28 | Ratchet applied to bidirectional ratchet structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212643363U true CN212643363U (en) | 2021-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020682383.6U Active CN212643363U (en) | 2020-04-28 | 2020-04-28 | Ratchet applied to bidirectional ratchet structure |
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| Country | Link |
|---|---|
| CN (1) | CN212643363U (en) |
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2020
- 2020-04-28 CN CN202020682383.6U patent/CN212643363U/en active Active
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