CN211918926U - Mechanism is trampled to straight line with on-off pawl - Google Patents

Abstract

The utility model relates to a mechanism is trampled to straight line with on-off pawl, include: the bicycle is characterized by comprising a power output part, a ratchet wheel, a transmission wheel, a pawl part frame, a pawl part, a stepping part, a transmission part or a transmission assembly consisting of the transmission part and a pull rod, wherein the ratchet wheel is sleeved on the power output part and is fixedly connected with the power output part, the pawl part frame is fixedly connected with the transmission wheel or integrally formed, the pawl part frame is sleeved on the ratchet wheel and is in relative rotary connection with the ratchet wheel, the pawl part is installed on the pawl part frame and can swing relative to the pawl part frame, the transmission part drives the transmission wheel to rotate, the pawl part comprises an installation part, a pawl part and a contact part, the pawl part is meshed with the ratchet wheel, and the transmission part or the pull rod triggers the contact part of the pawl part in the process of reversing the wheel so as to enable the pawl part of the pawl part to be disengaged from the ratchet wheel, so that the bicycle can freely back without.

Description

Mechanism is trampled to straight line with on-off pawl

[ technical field ] A method for producing a semiconductor device

The utility model relates to a bicycle field especially relates to a mechanism is trampled to straight line with on-off pawl.

[ background of the invention ]

The most mode that adopts the circumference to trample of bicycle actuating mechanism among the prior art, it has dead point of exerting oneself, is promptly when trampling power direction and crank are a straight line, no matter how big power also can't make the bicycle go forward with, on the other hand tramples the step and is done the circular motion, tramples the frequency not high, consequently, in order to solve this technical problem, the industry field utility model discloses a bicycle is trampled to the straight line, please refer to chinese patent 201810728921.8, it discloses a bicycle is trampled to the straight line, it includes: preceding guide pulley, back drive wheel, slider mechanism, drive belt, straining device and step on the piece, step on piece and slider mechanism fixed connection, the drive belt is around locating on preceding guide pulley and the back drive wheel, slider mechanism includes slider and guide rail, the head end of drive belt links to each other with the slider respectively with the tail end, and the defect that bicycle was trampled to this kind of straight line lies in: when the bicycle wheel backs backwards, the wheel drives the rear driving wheel and the driving belt to rotate anticlockwise, the driving belt drives the sliding block to move on the guide rail in the process of rotating anticlockwise, the length of the guide rail is limited, so that the distance of backing backwards of the bicycle is limited, once the sliding block slides to the edge of the guide rail, the bicycle cannot back backwards any more, the problem is the common problem of the prior art that the bicycle is linearly trampled, even if a sliding block mechanism is not applied to the bicycle, the bicycle can only back for a limited distance due to the length limit of the driving belt, and in practical application, the bicycle is generally required to be linearly trampled to be capable of freely backing like a bicycle which is circumferentially trampled, and is not limited by the distance of backing.

Therefore, it is necessary to provide a linear stepping mechanism with a switching pawl to solve the above-mentioned technical problems.

[ Utility model ] content

In order to solve the above problems, an object of the present invention is to provide a linear pedaling mechanism with an on-off pawl for a bicycle that can freely move backward.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a linear pedaling mechanism with an on-off pawl, comprising: the ratchet wheel is sleeved on the power output part and fixedly connected with the power output part, the pawl frame is fixedly connected with the driving wheel or integrally formed with the driving wheel, the pawl frame is sleeved on the ratchet wheel and is in relative rotary connection with the ratchet wheel, the pawl is mounted on the pawl frame and can swing relative to the pawl frame, the initial position of the pawl is controlled by the elastic piece, the driving piece drives the driving wheel to rotate, the pawl comprises a mounting part, a pawl part and a contact part, the pawl part is meshed with the ratchet wheel, and the driving piece or the driving rod triggers the contact part of the pawl in the process of reversing the wheel so as to enable the pawl part of the pawl to be disengaged from the ratchet wheel.

Preferably, the utility model provides a mechanism is trampled to straight line with on-off pawl further sets up to: the pawl rack is provided with an opening matched with the contact part of the pawl, the contact part penetrates through the opening in the pawl rack and protrudes out of the pawl rack or the contact part is accommodated in the opening, and when the contact part is accommodated in the opening, the pawl rack is provided with a middle triggering part and an elastic part for controlling the initial position of the middle triggering part.

Preferably, the utility model provides a mechanism is trampled to straight line with on-off pawl further sets up to: the linear trampling mechanism further comprises a guide wheel, the transmission part is a belt or a rope, the transmission wheel is a belt wheel or a rope wheel, a first guide groove and a second guide groove are formed in the belt wheel or the rope wheel, the first guide groove and the second guide groove are arranged at intervals, one end of a power section of the belt or the rope is wound on the first guide groove, the free tail end of the power section of the belt or the rope is fixedly connected with the belt wheel or the rope wheel, one end of a driven section of the belt or the rope is wound on the second guide groove, the free tail end of the driven section of the belt or the rope is fixedly connected with the belt wheel or the rope wheel, the other end of the power section of the belt or the rope is fixedly connected with the trampling piece, and the other end of the driven section of the belt or the rope.

Preferably, the utility model provides a mechanism is trampled to straight line with on-off pawl further sets up to: the transmission part is a belt or a rope, the transmission wheel is a belt wheel or a rope wheel, a first guide groove and a second guide groove are arranged on the belt wheel or the rope wheel, the first guide groove and the second guide groove are arranged at intervals, one end of a power section of the belt or the rope is wound on the first guide groove, the free tail end of the power section of the belt or the rope is fixedly connected with the belt wheel or the rope wheel, one end of a driven section of the belt or the rope is wound on the second guide groove, the free tail end of the driven section of the belt or the rope is fixedly connected with the belt wheel or the rope wheel, the other end of the power section of the belt or the rope is fixedly connected with one end of the pull rod, the other end of the driven section of the belt or the rope is fixedly connected with or elastically connected with the other end of the pull rod.

Preferably, the utility model provides a mechanism is trampled to straight line with on-off pawl further sets up to: the first guide groove and the second guide groove are both spirally arranged.

Preferably, the utility model provides a mechanism is trampled to straight line with on-off pawl further sets up to: the transmission part is a chain, the transmission wheel is a chain wheel, the power end of the chain is fixedly connected with one end of the pull rod, the driven end of the chain bypasses the transmission wheel and the guide wheel and is elastically connected with the other end of the pull rod, and the treading part and the pull rod form relative rotation connection.

Preferably, the utility model provides a mechanism is trampled to straight line with on-off pawl further sets up to: the transmission part is a chain, the transmission wheel is a chain wheel, the power end of the chain is fixedly connected with the treading part, and the driven end of the chain bypasses the guide wheel and the transmission wheel and is fixedly or elastically connected with the treading part.

Preferably, the utility model provides a mechanism is trampled to straight line with on-off pawl further sets up to: and the pull rod or the chain is provided with a contact part matched with the contact part of the pawl piece or the middle contact piece.

Preferably, the utility model provides a mechanism is trampled to straight line with on-off pawl further sets up to: and the chain is provided with a contact part matched with the contact part of the pawl piece or the middle trigger piece.

Preferably, the utility model provides a mechanism is trampled to straight line with on-off pawl further sets up to: the touch part is arranged in an arc shape.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses a set up a contact site on the pawl spare for thereby driving medium or pull rod touch the contact site of pawl spare at driven in-process and make pawl part and the ratchet break away from the meshing, and then make the bicycle freely back and do not receive the restriction of distance that backs.

[ description of the drawings ]

Fig. 1 is a schematic structural view of a linear pedaling mechanism in embodiment 1 of the present invention.

Fig. 2 is a schematic view of a partially exploded structure of a linear pedaling mechanism in embodiment 1 of the present invention.

Fig. 3 is a schematic sectional view taken along line a-a of fig. 1.

Fig. 4 is a schematic sectional view taken along line B-B of fig. 1.

Fig. 5 is a schematic structural view of a linear pedaling mechanism in embodiment 2 of the present invention.

Fig. 6 is a schematic structural view of a linear pedaling mechanism according to embodiment 3 of the present invention.

Fig. 7 is a partial schematic structural view of a linear stepping mechanism according to embodiment 3 of the present invention.

Fig. 8 is a schematic view of a partially exploded structure of a linear stepping mechanism according to embodiment 3 of the present invention.

Fig. 9 is a schematic cross-sectional view of a pawl and a ratchet according to embodiment 3 of the present invention.

Fig. 10 is a schematic structural view of a linear stepping mechanism according to embodiment 4 of the present invention.

Fig. 11 is a schematic structural view of a linear stepping mechanism according to embodiment 5 of the present invention.

In fig. 1 to 11: 1. power take-off, 2, ratchet, 20, bearing, 3, drive wheel, 30, first guide groove, 31, second guide groove, 4, pawl holder, 40, opening, 41, middle touching part, 42, elastic part, 5, pawl, 50, mounting part, 51, pawl part, 52, contact part, 53, pin, 6, stepping part, 7, guide wheel, 70, spring, 8, driving part, 80, power section, 81, passive section, 82, power end, 83, passive end, 9, pull rod, 90, touching part.

[ detailed description ] embodiments

The following describes a linear pedaling mechanism with a switch type pawl according to the present invention in further detail by way of specific embodiments.

Example 1

Referring to fig. 1 to 4, a linear stepping mechanism with a switching pawl includes: the device comprises a power output part 1, a ratchet wheel 2, a transmission wheel 3, a pawl frame 4, a pawl 5, a stepping part 6, a guide wheel 7 and a transmission part 8. In this embodiment, pto spare 1 is the transmission shaft, 2 covers of ratchet locate on the transmission shaft and with transmission shaft fixed connection, certainly in other embodiments, pto spare 1 also can be the input piece of derailleur, ratchet 2 and the input piece fixed connection of derailleur, and the derailleur drives transmission shaft or wheel drum and rotates, can realize equally the utility model discloses.

The pawl frame 4 is fixedly connected with the transmission wheel 3 or integrally formed, the pawl frame 4 is sleeved on the ratchet wheel 2 and is in relative rotation connection with the ratchet wheel 2, and in the embodiment, the pawl frame 4 and the ratchet wheel 2 are in relative rotation connection through the bearing 20. The pawl 5 comprises a mounting portion 50, a pawl portion 51 and a contact portion 52, the mounting portion 50 of the pawl 5 and the pawl frame 4 are respectively provided with a pin hole, a pin 53 passes through the pin holes so as to mount the pawl 5 on the pawl frame 4 and enable the pawl 5 to swing relative to the pawl frame 4, the pawl portion 51 is meshed with the ratchet 2, the pawl frame 4 is provided with an opening 40 matched with the contact portion 52, and the contact portion 52 of the pawl 5 passes through the opening 40 on the pawl frame 4 and protrudes out of the pawl frame 4.

The driving medium 8 drives the driving wheel 3 to rotate, in this embodiment, the driving medium 8 is a rope, the driving wheel 3 is a rope wheel, of course, in other embodiments, the driving medium 8 can also be a belt, the driving wheel 3 can also be a belt wheel, and the utility model discloses can be realized equally. Be equipped with first guide way 30 and second guide way 31 on the rope sheave, first guide way 30 and second guide way 31 all are the heliciform setting and a distance of both intervals. One end of the power section 80 of the rope is wound on the first guide groove 30, the free end of the power section is fixedly connected with the rope wheel, one end of the passive section 81 of the rope is wound on the second guide groove 31, the free end of the passive section is fixedly connected with the rope wheel, the other end of the power section 80 of the rope is fixedly connected with the treading piece 6, the other end of the passive section 81 of the rope bypasses the guide wheel 7 and is elastically connected with the treading piece 6 through a spring 70 or is directly fixedly connected with the treading piece 6.

The working principle of the linear treading mechanism in the embodiment is as follows: when riding forward, the treading piece 6 is moved forward, the treading piece 6 pulls the rope, the power section 80 of the rope pulls the rope pulley to rotate forward, the pawl piece 5 on the rope pulley is meshed with the ratchet wheel 2, the ratchet wheel 2 is fixedly connected with the transmission shaft, so that the transmission shaft is driven to operate, the power section 80 of the rope is released at the moment, the passive section 81 of the rope is wound on the second guide groove 31 of the rope pulley, when the treading piece 6 moves forward to a certain position, the treading piece 6 is stepped back, the passive section 81 of the rope is pulled in the process of stepping back by the treading piece 6, the rope drives the rope pulley to rotate reversely, and because the ratchet wheel 2 and the pawl piece 5 are arranged between the rope pulley and the transmission shaft, the reverse operation of the rope pulley can not drive the transmission shaft to rotate reversely (namely, when the treading piece 6 returns, the wheel can not fall back), at the passive section 81 of the rope releases, the power section 80 of the rope pulley is wound on the first guide groove 30, when the treading piece 6 is treaded back to a certain position, the bicycle is treaded forwards, and the bicycle is treaded forwards in a linear reciprocating mode. When the bicycle needs to move backwards and backwards, the wheel drives the transmission shaft to rotate reversely, so that the power section 80 of the rope is continuously wound on the first guide groove 30 of the rope wheel, in the winding process of the rope, the power section of the rope simultaneously drives the stepping piece to move backwards, when the stepping piece moves backwards to be close to a limit position, the rope can touch the contact part 52 of the pawl piece 5, so that the contact part 52 moves towards the direction close to the circle center, because the contact part 52 and the pawl part 51 of the pawl piece 5 are opposite ends taking the mounting part 50 as a swing center, the contact part 52 moves towards the direction close to the circle center to enable the pawl part 51 to move along the direction far away from the circle center, so that the pawl part 51 and the ratchet 2 are disengaged, the transmission shaft can freely rotate relative to the rope wheel, and the wheel can freely reverse without being limited by the reversing distance.

Example 2

Referring to fig. 5, the rest of the structure of the linear stepping mechanism in this embodiment is the same as that in embodiment 1, except that: the linear treading mechanism in the embodiment 1 is provided with the guide wheel 7 and not provided with the pull rod, while the linear treading mechanism in the embodiment is provided with the pull rod 9 and removes the guide wheel 7, the pull rod 9 and the rope jointly form a transmission component, the power section 80 of the rope is fixedly connected with one end of the pull rod 9, the passive section 81 of the rope is fixedly or elastically connected with the other end of the pull rod 9, the rope in the embodiment 1 is fixedly arranged on the treading piece 6, and in the embodiment, the pull rod 9 is arranged on the treading piece 6 and forms a relatively rotatable connection with the pull rod 9.

Example 3

Referring to fig. 6 to 9, a linear stepping mechanism with a switching pawl includes: the device comprises a power output part (not shown), a ratchet wheel 2, a transmission wheel 3, a pawl frame 4, a pawl 5, a treading part 6, a guide wheel 7, a transmission part 8 and a pull rod 9, wherein the transmission part 8 and the pull rod 9 form a transmission assembly together. In this embodiment, power take off is the transmission shaft, 2 covers of ratchet locate on the transmission shaft and with transmission shaft fixed connection, certainly in other embodiments, power take off also can be derailleur and transmission shaft, ratchet 2 and derailleur fixed connection, the derailleur drives the transmission shaft and rotates, can realize equally the utility model discloses.

The pawl rack 4 is fixedly connected with the transmission wheel 3 or integrally formed, the pawl rack 4 is sleeved on the ratchet wheel 2 and is in relative rotation connection with the ratchet wheel 2, the pawl 5 comprises a mounting part 50, a pawl part 51 and a contact part 52, the mounting part 50 of the pawl 5 and the pawl rack 4 are respectively provided with a pin hole, a pin passes through the pin hole so as to mount the pawl 5 on the pawl rack 4 and enable the pawl 5 to swing relative to the pawl rack 4, the pawl part 51 is meshed with the ratchet wheel 2, the pawl rack 4 is provided with an opening 40 matched with the contact part 52, and the contact part 52 of the pawl 5 passes through the opening 40 on the pawl rack 4 and protrudes out of the pawl rack 4.

The transmission member 8 drives the transmission wheel 3 to rotate, in the present embodiment, the transmission member 8 is a chain, the transmission wheel 3 is a chain wheel, the power end 82 of the chain is fixedly connected with one end of the pull rod 9, the driven end 83 of the chain bypasses the chain wheel and the guide wheel 7 and is elastically connected with the other end of the pull rod 9, and the treading member 6 and the pull rod 9 form a relatively rotatable connection. The draw bar 9 is provided with a touching part 90 which is matched with the contacting part 52 of the pawl 5, and the touching part 90 is arranged in an arc shape, so that the draw bar 9 can be better ensured to touch the contacting part 52 of the pawl 5 in the moving process. Of course, in other embodiments, the touching portion 90 may be disposed on the chain instead of the pull rod 9, and the present invention can be implemented as well.

The working principle of the linear treading mechanism in the embodiment is as follows: when the bicycle is ridden forwards, the treading piece 6 is moved forwards, the treading piece 6 pulls the chain, the power end 82 of the chain pulls the chain wheel to rotate forwards, the pawl piece 5 on the chain wheel is meshed with the ratchet wheel 2, the ratchet wheel 2 is fixedly connected with the transmission shaft, the transmission shaft is driven to operate, when the treading piece 6 moves forwards to a certain position, the treading piece 6 is treaded backwards, the driven end 83 of the chain is pulled in the process that the treading piece 6 treads backwards, the chain drives the chain wheel to rotate reversely, and the ratchet wheel 2 and the pawl piece 5 are arranged between the chain wheel and the transmission shaft, so that the reverse operation of the chain wheel cannot drive the reverse operation of the transmission shaft (namely, when the treading piece 6 treads backwards, the wheel cannot fall backwards), when the treading piece 6 treads backwards to a certain position, the bicycle is treaded forwards again, and the linear treading bicycle is ridden. When the bicycle needs to back up and move, the wheel drives the transmission shaft to reversely rotate, thereby driving the pull rod 9 to continuously move leftwards, in the moving process, the power end of the chain simultaneously drives the treading piece to move backwards, when the treading piece moves backwards to be close to the limit position, the contact part 90 on the pull rod 9 touches the contact part 52 of the pawl piece 5, so that the contact part 52 moves towards the direction close to the circle center, the pawl part 51 moves along the direction far away from the circle center, and further the pawl part 51 and the ratchet 2 are disengaged, the transmission shaft can freely rotate relative to the chain wheel, therefore, the wheel can freely back up, and is not limited by the backing distance.

Example 4

Referring to fig. 10, the rest of the structure in this embodiment is the same as embodiment 3, except that: in the embodiment 3, a pull rod is provided, but not provided, in the embodiment, the power end 82 of the chain is fixedly connected with the stepping element 6, the passive section 83 of the chain bypasses the guide wheel 7 and the driving wheel 3 and is fixedly or elastically connected with the stepping element 6, and the chain is provided with a contact part matched with the contact part of the pawl element.

Example 5

In embodiments 1 to 4, the contact portion 52 of the pawl 5 passes through the opening 40 of the pawl frame 4 and protrudes out of the pawl frame 4, and the rope or chain or the tie rod directly touches the contact portion 52, as shown in fig. 11, but in this embodiment, the contact portion 52 of the pawl 5 is located in the opening 40 of the pawl frame 4, the intermediate touching member 41 and the elastic member 42 for controlling the initial position of the intermediate touching member 41 are additionally arranged on the pawl frame, the rope or chain or tie rod directly touches the intermediate touching member 41, and the intermediate touching member 41 moves into the opening 40 again and touches the contact portion 52 of the pawl 5.

To sum up, the utility model discloses a set up a contact site on the pawl spare for driving medium or pull rod touch the contact site of pawl spare at driven in-process thereby make the pawl part and the ratchet of pawl spare break away from the meshing, and then make the bicycle freely back and do not receive the restriction of distance that backs.

The above-mentioned embodiments are merely illustrative of the principles and effects of the present invention, and some embodiments may be applied, and are not intended to limit the present invention; it should be noted that, for those skilled in the art, without departing from the inventive concept, several variations and modifications can be made, which are within the scope of the present invention.

Claims (10)

1. A linear pedaling mechanism with an on-off pawl, comprising: the ratchet wheel is sleeved on the power output part and is fixedly connected with the power output part, the pawl frame is fixedly connected with the driving wheel or integrally formed with the driving wheel, the pawl frame is sleeved on the ratchet wheel and is in relative rotation connection with the ratchet wheel, the pawl is installed on the pawl frame and can swing relative to the pawl frame, the initial position of the pawl is controlled by the elastic part, and the driving part drives the driving wheel to rotate, which is characterized in that: the ratchet piece comprises a mounting portion, a ratchet portion and a contact portion, the ratchet portion is meshed with the ratchet wheel, and the transmission piece or the pull rod triggers the contact portion of the ratchet piece in the process of reversing the wheel so that the ratchet portion of the ratchet piece is disengaged from the ratchet wheel.

2. The linear stepping mechanism with the on-off pawl according to claim 1, wherein: the pawl rack is provided with an opening matched with the contact part of the pawl, the contact part penetrates through the opening in the pawl rack and protrudes out of the pawl rack or the contact part is accommodated in the opening, and when the contact part is accommodated in the opening, the pawl rack is provided with a middle triggering part and an elastic part for controlling the initial position of the middle triggering part.

3. The linear stepping mechanism with the on-off pawl according to claim 2, wherein: the linear trampling mechanism further comprises a guide wheel, the transmission part is a belt or a rope, the transmission wheel is a belt wheel or a rope wheel, a first guide groove and a second guide groove are formed in the belt wheel or the rope wheel, the first guide groove and the second guide groove are arranged at intervals, one end of a power section of the belt or the rope is wound on the first guide groove, the free tail end of the power section of the belt or the rope is fixedly connected with the belt wheel or the rope wheel, one end of a driven section of the belt or the rope is wound on the second guide groove, the free tail end of the driven section of the belt or the rope is fixedly connected with the belt wheel or the rope wheel, the other end of the power section of the belt or the rope is fixedly connected with the trampling piece, and the other end of the driven section of the belt or the rope.

4. The linear stepping mechanism with the on-off pawl according to claim 2, wherein: the transmission part is a belt or a rope, the transmission wheel is a belt wheel or a rope wheel, a first guide groove and a second guide groove are arranged on the belt wheel or the rope wheel, the first guide groove and the second guide groove are arranged at intervals, one end of a power section of the belt or the rope is wound on the first guide groove, the free tail end of the power section of the belt or the rope is fixedly connected with the belt wheel or the rope wheel, one end of a driven section of the belt or the rope is wound on the second guide groove, the free tail end of the driven section of the belt or the rope is fixedly connected with the belt wheel or the rope wheel, the other end of the power section of the belt or the rope is fixedly connected with one end of the pull rod, the other end of the driven section of the belt or the rope is fixedly connected with or elastically connected with the other end of the pull rod.

5. The linear stepping mechanism with the on-off type clicking mechanism according to claim 3 or 4, wherein: the first guide groove and the second guide groove are both spirally arranged.

6. The linear stepping mechanism with the on-off pawl according to claim 2, wherein: the transmission part is a chain, the transmission wheel is a chain wheel, the power end of the chain is fixedly connected with one end of the pull rod, the driven end of the chain bypasses the transmission wheel and the guide wheel and is elastically connected with the other end of the pull rod, and the treading part and the pull rod form relative rotation connection.

7. The linear stepping mechanism with the on-off pawl according to claim 2, wherein: the transmission part is a chain, the transmission wheel is a chain wheel, the power end of the chain is fixedly connected with the treading part, and the driven end of the chain bypasses the guide wheel and the transmission wheel and is fixedly or elastically connected with the treading part.

8. The linear stepping mechanism with on-off pawls according to claim 6, wherein: and the pull rod or the chain is provided with a contact part matched with the contact part of the pawl piece or the middle contact piece.

9. The linear stepping mechanism with on-off pawls according to claim 7, wherein: and the chain is provided with a contact part matched with the contact part of the pawl piece or the middle trigger piece.

10. A linear stepping mechanism with on-off pawls according to claim 8 or 9, wherein: the touch part is arranged in an arc shape.

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