CN211642482U - Speed regulator for bicycle - Google Patents

Abstract

The utility model discloses a bicycle speed regulator, which comprises a speed regulating ratchet, a shift push rod, a shift push rod and a limit structure. The limit structure includes a limit piece and a limit spring. A raised limit pawl is provided; a drive pawl is provided on the rotational driving end of the upshift push rod, and the release drive end of the downshift push rod extends to a position where the limiter is far from the original position of the drive pawl. Wherein, the end of the limit member close to the original position of the driving pawl is provided with a synchronous drive boss, and the downshift operation end of the downshift push rod is toggled to push the limit member in the direction of the driving pawl, the The synchronous driving boss pushes the driving pawl, moves in the release direction synchronously with the limiting pawl, and moves away from the outer ratchet slot and the inner ratchet slot respectively. The bicycle speed governor can not only solve the problem of limiting the position of the driving pawl to the speed regulating ratchet, but also remove the stroke of the virtual position, so that the gear shifting operation can be accurately and conveniently completed, and the use experience can be improved.

Description

A bicycle governor

technical field

The utility model relates to a bicycle speed regulating device, in particular to a bicycle speed regulating device.

Background technique

In a bicycle equipped with a speed control device, the chain can be switched to cooperate with gear discs of different sizes by dialing the speed control device on the handle. The guide rope pulls the derailleur to move the chain from the current flywheel to the next flywheel to complete the gear switch, thereby adjusting the transmission ratio of the front and rear gears and the driving force of pedaling, which is suitable for different usage needs.

Among the existing speed governors, for example, the invention patent with the authorization announcement number of CN 105438397 B discloses a bicycle speed change device, the bicycle speed change device is provided with an upshift push rod and a downshift push rod, wherein the upshift push rod is The rod is used to push the speed-regulating ratchet to rotate, and at the same time, the speed-regulating ratchet drives the guide rope to pull the derailleur. The force of the torsion spring rotates to ensure that the speed regulating ratchet can stay in the position after shifting; the gear reduction push rod is used to release the limit pawl to keep it away from the current ratchet groove of the speed regulating ratchet. There is no limit, so the speed regulating ratchet can rotate under the force of the torsion spring to downshift.

Further, when the upshift push rod is released after the upshift is completed, its return spring will drive the upshift push rod to rotate and reset, so that the driving pawl on the upshift push rod moves to the original position; During the gear reduction process, the speed regulating ratchet is limited, and the existing speed governor will set a lifting boss at the original position where the driving pawl is reset, so that the driving pawl that has been reset to the original position is lifted and suspended at the bottom. In addition to an outer ratchet tooth slot, this can avoid the limit of the drive pawl to the speed-regulating ratchet, and the speed-regulating ratchet can be released when the limit of the limiting pawl is released to complete the downshift operation. Although the above structure can solve the problem of the limit of the drive pawl to the speed regulating ratchet, it also has the following problems:

In the next upshift, the rider pushes the upshift lever, which needs to complete two necessary strokes: the first stroke is to drive the drive pawl from the lift boss to the current outer ratchet. In the groove, the second stroke is to make the driving pawl drive the speed-regulating ratchet to rotate forward; so in actual use, it will first go through a virtual stroke, and then enter the upshift stroke, which may cause the rider to The illusion of upshifting makes it difficult to clearly and accurately control the upshift operation, and the total stroke is relatively long, requiring a larger driving range, poor convenience, and the experience needs to be improved.

Utility model content

The purpose of this utility model is to overcome the above-mentioned problems, and to provide a bicycle speed governor, which can not only solve the problem of the limit of the driving pawl to the speed regulating ratchet, but also remove the travel of the virtual position, thereby The gear shifting operation can be completed accurately and conveniently, improving the user experience.

The purpose of the present utility model is achieved through the following technical solutions:

A bicycle speed governor, comprising a speed regulating ratchet for pulling a guide rope, an upshift push rod for driving the speed regulating ratchet to rotate, a downshifting push rod for releasing the speed regulating ratchet, and a speed regulating ratchet for adjusting the speed regulating ratchet. The limiting structure for limiting, the limiting structure includes a limiting piece and a limiting spring, the limiting piece is provided with a raised limiting pawl, and the limiting spring urges the limiting pawl to extend to In the inner ratchet tooth groove of the speed regulating ratchet; a driving pawl for driving the speed regulating ratchet to rotate in the opposite direction of the outer ratchet is provided on the rotating driving end of the upshift push rod, and the downshifting push rod The release drive end of the stopper extends to the side of the stopper away from the original position of the drive pawl;

Wherein, the end of the limiting member close to the original position of the driving pawl is provided with a synchronous driving boss, and the downshift operation end of the downshift push rod is toggled, and the release driving end is pushed around the hinge shaft to the direction of the driving pawl Limiting piece, the synchronous driving boss drives the driving pawl along with the linear movement of the limiting piece, so that the driving pawl and the limiting pawl move in the release direction synchronously, away from the outer ratchet tooth groove of the speed regulating ratchet respectively and internal ratchet grooves.

The working principle of the above bicycle governor is:

During the upshifting process, after releasing the upshifting push rod, the upshifting push rod will reset and rotate, thereby driving the driving pawl to move to the original position, and the driving pawl bypasses the rear outer ratchet and enters the next outer ratchet slot. .

During the downshift process, when the rider pulls the downshift push rod, the release driving end of the downshift push rod pushes the limiter around the hinge shaft toward the direction of the drive pawl, and the limiter compresses the limiter spring to move Move; since the end of the limiter close to the original position of the drive pawl is provided with a synchronous drive boss (the original position refers to the position of the drive pawl before the upshift push rod and the downshift push rod are rotated), when the limiter moves toward During the forward movement, the synchronous drive boss acts directly on the drive pawl, and moves in the release direction along with the limiter together with the limit pawl (the release direction means that the downshift push rod pushes the limit pawl). The direction in which the pawl leaves the inner ratchet slot and contacts the limit), that is, the limiting pawl and the driving pawl are simultaneously away from the outer ratchet slot and the inner ratchet slot; when the limiting pawl and the driving pawl all move to the corresponding ratchet When it is outside the tooth slot, due to the lack of limit, the speed regulating ratchet rotates under the force of the speed regulating torsion spring to downshift.

In a preferred solution of the present invention, the synchronous driving boss is integrally formed on the limiting member.

A preferred solution of the present utility model further includes a bracket on the outer casing of the speed governor and a rotating shaft arranged on the bracket, one end of the rotating shaft is fixed on the bracket, and the other end passes through the speed regulating ratchet and the rotating drive respectively. on the center of rotation of the end.

In a preferred solution of the present invention, one end of the upshift push rod is the upshift operation end used for the toggle operation, and the other end is the rotational drive end; The downshift operation end of the toggle operation, and the other end is the release drive end.

Preferably, one side of the rotating drive end is provided with a rotating reset coil spring, one end of the rotating reset coil spring is fixed on the rotating drive end, and the other end is fixed on the bracket;

One side of the release drive end is provided with a release return torsion spring, one end of the release return torsion spring is fixed on the release drive end, and the other end is fixed on the bracket. By setting the reset coil spring and the reset torsion spring, the upshift push rod and the downshift push rod can be automatically driven to reset after the gear shifting is completed, which greatly facilitates the shifting operation.

In a preferred solution of the present utility model, a driving torsion spring for urging the driving pawl to abut against the outer ratchet tooth groove of the speed regulating ratchet is provided between the driving pawl and the rotating driving end. Under the action, it can not only push the driving pawl against the outer ratchet groove, ensure that each upshift operation can drive the speed regulating ratchet to rotate, and successfully complete the upshift, and at the same time, it can avoid the outer ratchet when the upshift push rod is reset. Tooth structure, after crossing the current outer ratchet, it enters the next ratchet slot again to prepare for the next upshift adjustment.

In a preferred solution of the present invention, the speed regulating ratchet is fixedly connected to the guide rope through a guide rope fixing member, one end of the speed regulating ratchet is set as an outer ratchet structure, and the other end is set as an inner ratchet structure; In the circumferential direction, the outer ratchet structure is provided with a plurality of outer ratchets, and the inner ratchet structure is provided with a plurality of inner ratchets; the directions of the outer ratchets and the inner ratchets are the same.

Preferably, a speed regulating torsion spring is arranged between the speed regulating ratchet and the guide rope fixing member, one end of the speed regulating torsion spring is fixed on the speed regulating ratchet, and the other end is fixed on the guiding rope fixing member.

In a preferred solution of the present invention, the bracket is provided with an avoidance hole for avoiding the lateral movement of the limiting pawl.

Compared with the prior art, the utility model has the following beneficial effects:

1. In the bicycle governor of the present invention, by fixing the synchronous driving boss on the limiting member, when the limiting member moves in the releasing direction, the limiting pawl and the driving pawl are simultaneously driven away from the outer ratchet teeth. The groove and the inner ratchet tooth groove can not only solve the problem of the limit of the drive pawl to the speed-regulating ratchet, but also remove the virtual stroke, which eliminates the virtual stroke in the prior art, and can be accurately and conveniently grasped. The operation of the governor improves the user experience.

2. Since two sets of actions to release the limit position independently are completed at the same time in the same toggle stroke, the toggle stroke of the entire upshift operation can be effectively shortened, making the speed control operation of the governor more detailed and tight.

Description of drawings

FIG. 1 is a schematic exploded perspective view of the bicycle governor in the utility model.

FIG. 2 is a schematic three-dimensional structural diagram of a gear-down push rod, a limiting member and a driving pawl in FIG. 1 .

3-8 are schematic diagrams of the upshift adjustment of the bicycle governor in the utility model, wherein, FIG. 3 is a schematic diagram before upshifting, FIG. 4 is a schematic diagram of just starting to push the upshift push rod, and FIG. 5 is a limit The schematic diagram of the pawl avoiding the inner ratchet, Figure 6 is the schematic diagram of the limit pawl just passing the inner ratchet, Figure 7 is the schematic diagram of the limit pawl entering the next inner ratchet slot, and Figure 8 is the upshift push rod automatic Schematic of reset.

9-12 are schematic diagrams of the downshift adjustment of the bicycle governor in the utility model, wherein, FIG. 9 is a schematic diagram of just starting to push the downshift push rod, and FIG. 10 is a driving pawl and a limit clamping pawl leaving the ratchet teeth Schematic diagram of the groove, Figure 11 is a schematic diagram of the speed regulating ratchet being rotated, and Figure 12 is a schematic diagram of the limit pawl entering the next inner ratchet tooth groove.

Detailed ways

In order for those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

Referring to Figures 1-2, the bicycle governor in this embodiment includes a bracket 1 on the outer casing of the governor, a rotating shaft 2 provided on the bracket 1, a speed regulating ratchet 3 for pulling the guide rope, and a The upshift push rod 4 for driving the speed regulating ratchet 3 to rotate, the downshifting push rod 5 for releasing the speed regulating ratchet 3, and the limiting structure for limiting the speed regulating ratchet 3, the limiting structure includes a limiting structure. A position member 6 and a limit spring 7, the position limit member 6 is provided with a raised limit pawl 6-1, and the limit spring 7 urges the limit pawl 6-1 to extend to the position of the speed regulating ratchet 3. in the inner ratchet groove.

1-2, one end of the upshift push rod 4 is the upshift operation end used for the toggle operation, and the other end is the rotational driving end, and the rotational driving end is provided with a speed regulating ratchet 3 for driving A drive pawl 8 that rotates in the opposite direction along the outer ratchet; one end of the downshift push rod 5 is the downshift operation end for the toggle operation, and the other end is the release drive end; the released drive The end extends to the side of the stopper 6 away from the original position of the drive pawl 8 . One end of the rotating shaft 2 is fixed on the bracket 1 , and the other end passes through the speed regulating ratchet 3 and the rotation center of the rotating driving end respectively.

Wherein, the end of the limiting member 6 close to the original position of the driving pawl 8 is provided with a synchronous driving boss 6-2, the downshift operation end of the downshift push rod 5 is toggled, and the release driving end is driven around the hinge shaft to drive The direction of the pawl 8 pushes the limiter 6, and the synchronous drive boss 6-2 pushes the drive pawl 8 and the limit pawl 6-1 to move in the release direction synchronously, away from the outer ratchet teeth of the speed regulating ratchet 3 respectively. slot and inner ratchet slot.

Referring to FIG. 1-2 , the synchronous driving boss 6-2 is integrally formed on the limiting member 6 . Of course, other fixed connection technologies can also be used to fix the synchronous drive boss 6-2 on the limiting member 6.

Referring to Figures 1-2, one side of the rotating drive end is provided with a rotating return coil spring 9, one end of the rotating return coil spring 9 is fixed on the rotating drive end, and the other end is fixed on the bracket 1; The side is provided with a releasing return torsion spring 10 , one end of the releasing return torsion spring 10 is fixed on the release driving end, and the other end is fixed on the bracket 1 . By arranging the reset coil spring and the reset torsion spring, the upshift push rod 4 and the downshift push rod 5 can be automatically driven to reset after the gear shifting is completed, which greatly facilitates the shifting operation.

1-2, a driving torsion spring 11 is provided between the driving pawl 8 and the rotating driving end for urging the driving pawl 8 to abut against the outer ratchet tooth slot of the speed regulating ratchet 3. The driving torsion spring 11 Under the action of the driving pawl 8, it can not only push the driving pawl 8 against the outer ratchet tooth groove, and ensure that each upshift operation can drive the speed regulating ratchet 3 to rotate, successfully complete the upshift, and at the same time, the upshift push rod 4 can be reset. Avoid the outer ratchet structure, and enter the next ratchet slot after passing the current outer ratchet to prepare for the next shift adjustment.

1-2, the speed-adjusting ratchet 3 is fixedly connected to the guide rope through the guide-rope fixing member 12, one end of the speed-adjusting ratchet 3 is set as an outer ratchet structure, and the other end is set as an inner ratchet structure; In the direction of , the outer ratchet structure is provided with a plurality of outer ratchets, and the inner ratchet structure is provided with a plurality of inner ratchets; the directions of the outer ratchets and the inner ratchets are the same.

Further, a speed regulating torsion spring 13 is arranged between the speed regulating ratchet 3 and the guide rope fixing member 12 , one end of the speed regulating torsion spring 13 is fixed on the speed regulating ratchet 3 , and the other end is fixed on the guiding rope fixing member 12 .

Referring to FIG. 1 , the bracket 1 is provided with an escape hole for avoiding the lateral movement of the limiting pawl 6-1.

Referring to Figure 1-12, the working principle of the above bicycle governor is:

During the upshift process, after the upshift push rod 4 is released, the upshift push rod 4 is reset and rotated, thereby driving the driving pawl 8 to move to the original position, and the driving pawl 8 bypasses the rear outer ratchet and enters the next outer In the ratchet slot, the specific upshift operation is shown in Figure 3-8.

During the downshift process, when the rider moves the downshift push rod 5, the release drive end of the downshift push rod 5 pushes the limiter 6 around the hinge shaft in the direction of the drive pawl 8, and the limiter 6 The limit spring 7 is compressed to move; since the end of the limit member 6 close to the original position of the driving pawl 8 is provided with a synchronous drive boss 6-2, during the forward movement of the limit member 6, the synchronous drive boss 6-2 2 directly acts on the driving pawl 8, and moves in the release direction synchronously with the limit pawl 6-1 together with the limiter 6 (the release direction means that the downshift push rod 5 pushes the limit pawl 6- 1 away from the direction of the inner ratchet slot to contact the limit), that is, the limit pawl 6-1 and the driving pawl 8 are simultaneously away from the outer ratchet slot and the inner ratchet slot, as shown in Figure 9-12; when the limit pawl When 6-1 and the driving pawl 8 all move out of the corresponding ratchet slot, the driving pawl 8 first moves out of the outer ratchet slot, and the limiting pawl 6-1 moves out of the inner ratchet slot later, Due to the lack of a limit, the speed regulating ratchet 3 rotates under the force of the speed regulating torsion spring 13 to downshift.

The above are the preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited by the above-mentioned contents, and any other changes, modifications, substitutions, and combinations made without departing from the spirit and principle of the present utility model , simplification, all should be equivalent replacement methods, and are all included in the protection scope of the present invention.

Claims (9)

1. A bicycle speed regulator is characterized by comprising a speed regulating ratchet wheel, a gear-up push rod, a gear-down push rod and a limiting structure, wherein the speed regulating ratchet wheel is used for pulling a guide rope; the rotating driving end of the gear-up push rod is provided with a driving pawl for driving the speed regulating ratchet wheel to rotate along the opposite direction of the outer ratchet, and the releasing driving end of the gear-down push rod extends to one side of the limiting piece away from the original position of the driving pawl;

the synchronous driving boss drives the driving pawl along with the linear movement of the limiting piece, so that the driving pawl and the limiting pawl synchronously move towards the releasing direction and are respectively far away from an outer ratchet groove and an inner ratchet groove of the speed regulating ratchet.

2. The bicycle speed governor of claim 1, wherein the synchronization drive boss is integrally formed on the limit stop.

3. The bicycle speed governor of claim 1, further comprising a bracket on the housing of the speed governor and a shaft disposed on the bracket, one end of the shaft being fixed to the bracket and the other end passing through the center of rotation of the speed regulating ratchet and the rotational drive end, respectively.

4. The bicycle speed governor according to any one of claims 1 to 3, wherein one end of the upshift push rod is an upshift operation end for a dial operation, and the other end is the rotation drive end; one end of the gear-reducing push rod is a gear-reducing operation end used for shifting operation, and the other end of the gear-reducing push rod is the release driving end.

5. The bicycle speed governor of claim 4, wherein the rotational drive end is provided with a rotational return coil spring on one side, one end of the rotational return coil spring being fixed to the rotational drive end and the other end being fixed to the bracket;

and one side of the release driving end is provided with a release reset torsion spring, one end of the release reset torsion spring is fixed on the release driving end, and the other end of the release reset torsion spring is fixed on the bracket.

6. The bicycle speed governor of claim 4, wherein a drive torsion spring is disposed between the drive pawl and the rotational drive end for urging the drive pawl against the outer ratchet groove of the speed ratchet.

7. The bicycle speed regulator of claim 1, wherein the speed regulating ratchet is fixedly connected with the guide rope through a guide rope fixing member, one end of the speed regulating ratchet is provided with an outer ratchet structure, and the other end of the speed regulating ratchet is provided with an inner ratchet structure; in the circumferential direction, the outer ratchet structure is provided with a plurality of outer ratchets, and the inner ratchet structure is provided with a plurality of inner ratchets; the orientation of the outer ratchet and the inner ratchet is the same.

8. The bicycle speed regulator of claim 7, wherein a speed regulating torsion spring is disposed between the speed regulating ratchet and the guide rope fixing member, and one end of the speed regulating torsion spring is fixed to the speed regulating ratchet and the other end thereof is fixed to the guide rope fixing member.

9. The bicycle speed regulator of claim 3, wherein the bracket is provided with an avoidance hole for avoiding the limit pawl to move transversely.

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