CN2685115Y - Bi-directional ratchet assembly for hub and flywheel for hub - Google Patents

Abstract

A bidirectional ratchet assembly for a hub and a flywheel for the hub. In order to provide a bicycle component which is suitable for different types of bicycles, reduces the manufacturing cost and improves the economic benefit, the utility model is provided, which is applied and assembled on a hub with an annular tooth edge on one side; it comprises an inner cylinder, a transmission fluted disc assembled at the outer end of the inner cylinder, a plurality of one-way ratchets and an elastic ring; the center of the inner cylinder is provided with a shaft hole which is used for being pivoted at one end of a central shaft rod of the hub, the periphery of the inner end of the inner cylinder is provided with a plurality of grooves which are respectively used for assembling a plurality of unidirectional ratchets, and the bottom of each groove is provided with a pivoting end limiting part and a tooth end limiting part; the one-way ratchet is provided with a pivoting end with a circular edge and a flat sharp-shaped tooth end which corresponds to the annular tooth edge of the inner wall at one side of the hub and is in a single-rotation clamping state; the bottom surfaces of the pivoting end limiting part and the tooth end limiting part of the inner cylinder groove are provided with space patterns of two symmetrical concave arc surfaces which are corresponding to and matched with the pivoting end of the one-way ratchet.

Description

Bi-directional ratchet assembly for hub and flywheel for hub

technical field

The utility model belongs to bicycle parts, in particular to a wheel hub and a bidirectional ratchet assembly of a flywheel for the wheel hub.

Background technique

Usually, the bicycle hub is provided with a transmission chainring, and a one-way ratchet and an annular tooth edge are provided between the inner cylinder at one end of the transmission chainring and the wheel hub, so that when the bicycle chain drives the transmission chainring, it can drive the transmission chainring and the wheel hub to rotate in the forward direction. The reverse is the purpose of staggering the idling. The one-way ratchets are generally designed to have unequal diameters with circular pivoting parts and flat pointed tooth ends due to their shape. Therefore, the periphery of the inner cylinder is also correspondingly provided with accommodating grooves with deep and shallow grooves for each group of unidirectional ratchets to set limits. However, this conventional structure still has the following problems in actual use:

At present, in order to meet the needs of some special models, the transmission chainring of the bicycle hub will change the lateral direction of the assembly on the hub, so that the inner cylinder integrated with it will also need to be reversed and assembled accordingly. However, due to the The accommodating slots are directional. If they are directly installed on the other side of the hub, the locking direction of the one-way ratchet will be different and cannot be implemented. Therefore, the current practice in the industry is to make another set of inner cylinders of different types to cope with the other lateral assembly type. However, this method will obviously greatly increase the manufacturing cost and is not in line with economic benefits and better industrial utilization.

Contents of the invention

The purpose of the utility model is to provide a wheel hub and a bidirectional ratchet assembly of a flywheel for the hub, which is suitable for use in different vehicle types, reduces manufacturing costs, and improves economic benefits.

The utility model is applied and assembled on a wheel hub with an annular tooth edge on one side; it includes an inner cylinder, a transmission tooth plate assembled on the outer end of the inner cylinder, several one-way ratchets and an elastic ring; the center of the inner cylinder is equipped with In order to pivot the shaft hole at one end of the central shaft of the hub, the spacer ring around the inner end is provided with several grooves for the assembly of several one-way ratchets, and the bottom of each groove is provided with a pivoting end limiter and Tooth end limiting part; the one-way ratchet is provided with a pivoting end with a circular edge and a flat pointed tooth end corresponding to the annular tooth edge on the inner wall of the hub side and in a single-rotation locking state; the inner cylinder is concave The pivoting end limiting portion of the groove and the bottom surface of the tooth end limiting portion are provided with two symmetrical concave arc-shaped surfaces corresponding to and coincident with the pivoting end of the one-way ratchet.

in:

A two-way ratchet assembly for a wheel hub, which is applied and assembled on a wheel hub with an annular tooth rim on one side; it includes an inner cylinder, a transmission tooth plate assembled on the outer end of the inner cylinder, several one-way ratchets and elastic Ring; the center of the inner cylinder is provided with a shaft hole for pivoting at one end of the central shaft of the hub, and the interval ring around the inner end is provided with several grooves for the assembly of several one-way ratchets. At the bottom of each groove, there are Pivot end stopper and tooth end stopper; the one-way ratchet is provided with a pivot end with a circular edge and a flat pointed shape corresponding to the annular tooth edge on the inner wall of the hub side and in a single-rotation locking state the tooth end; the inner cylinder spacer ring is provided with the first and second sets of grooves that are staggered and opposite in shape; the arrangement order of the first and second sets of grooves is opposite to the direction of the arrangement of the pivoting end limiting portion and the tooth end limiting portion.

A two-way ratchet assembly for a wheel hub flywheel, which is applied and assembled on a wheel hub flywheel with an annular toothed edge transmission tooth plate on the inner wall pivoted on the outer periphery; it includes a screw hole seat screwed on one end of the wheel hub, several One-way ratchet and elastic ring; the screw hole seat is set in the center of the flywheel and rotates oppositely with the transmission chainring. The bottom of the groove is provided with a pivot end limiter and a tooth end limiter; the one-way ratchet is provided with a pivot end with a circular edge and corresponds to the ring tooth edge on the inner wall of the drive tooth plate and is in a single-rotation locking state The flat point-shaped tooth end; the pivot end limit part of the groove of the screw hole seat and the bottom surface of the tooth end limit part are provided with two symmetrical concave arc surfaces corresponding to and coincident with the pivot end of the one-way ratchet type of space.

A two-way ratchet assembly for a wheel hub flywheel, which is applied and assembled on a wheel hub flywheel with an annular toothed edge transmission tooth plate on the inner wall pivoted on the outer periphery; it includes a screw hole seat screwed on one end of the wheel hub, several One-way ratchet and elastic ring; the screw hole seat is set in the center of the flywheel and rotates oppositely with the transmission chainring. The bottom of the groove is provided with a pivot end limiter and a tooth end limiter; the one-way ratchet is provided with a pivot end with a circular edge and corresponds to the ring tooth edge on the inner wall of the drive tooth plate and is in a single-rotation locking state The flat tip-shaped tooth end; the screw hole seat spacing ring is set with the first and second sets of grooves that are staggered and opposite in shape; The sorting order is reversed.

Because the utility model includes an inner cylinder, a transmission tooth plate assembled on the outer end of the inner cylinder, several one-way ratchets and an elastic ring; the center of the inner cylinder is provided with a shaft hole for pivoting on one end of the central shaft of the hub, and the inner end The peripheral spacer ring is provided with several grooves for the assembly of several one-way ratchets, and the bottom of each groove is provided with a pivot end limiter and a tooth end limiter; the one-way ratchet is provided with a round edge The pivot end and the flat pointed tooth end corresponding to the annular tooth edge of the inner wall on one side of the hub and in a single-rotation locking state; the pivot end limit part of the inner cylinder groove and the bottom surface of the tooth end limit part There are two symmetrical concave arc-shaped surfaces corresponding to and coincident with the pivoting ends of the one-way ratchet. When assembling, several one-way ratchets can be assembled in the groove of the inner cylinder regardless of whether the tooth ends are forward or reverse; thus, several one-way ratchets can be assembled in the left and right directions of the hub , to adapt to the use of different car models, thereby reducing manufacturing costs and improving economic benefits, thereby achieving the purpose of the utility model.

Description of drawings

Fig. 1 is a perspective view showing the structure of the utility model.

Fig. 2 is a schematic top view of the structure of the utility model (assembled on the left side of the hub).

Fig. 3 is a schematic top view of the structure of the utility model (assembled on the right side of the hub).

Fig. 4 is a schematic perspective view of the structure of the utility model (two groups of grooves are misplaced in opposite patterns).

Fig. 5 is a schematic top view of the structure of the utility model (the two groups of grooves are misplaced in opposite patterns and assembled on the left side of the hub).

Fig. 6 is a schematic top view of the structure of the utility model (the two groups of grooves are misplaced in opposite patterns and assembled on the right side of the hub).

Fig. 7 is a schematic perspective view of the structure of the utility model (assembled in a flywheel for the hub).

Fig. 8 is a schematic top view of the utility model structure (assembled in the left side state of the flywheel for the hub).

Fig. 9 is a schematic top view of the structure of the utility model (assembled in the state of the right side of the flywheel for the hub).

Detailed ways

As shown in FIG. 1 and FIG. 2 , the utility model is applied and assembled on a wheel hub 20 with an annular toothed edge 22 on one side.

The utility model includes an inner cylinder 10 , a transmission toothed disc 12 , several one-way ratchets 40 and an elastic ring 50 .

The center of the inner cylinder 10 is provided with a shaft hole 11 for pivoting at one end of the central shaft 21 of the wheel hub 20, and a spacer ring around the inner end is provided with several grooves 30 respectively for several one-way ratchets 40 to be assembled. The bottom of the groove 30 is provided with a pivot end limiting portion 31 and a gear end limiting portion 32 . The bottom surface of the pivot end limit portion 31 and the tooth end limit portion 32 of the groove 30 of the inner cylinder 10 is provided with two symmetrical concave arc-shaped surfaces, that is, the pivot end limit portion 31 and the tooth end limit portion The bottom surfaces of 32 are all corresponding to and matched with the pivoting end 41 of the one-way ratchet 40 to form as shown in Fig. In the groove 30 of the barrel 10 ; thereby, the one-way ratchet 40 can be suitably assembled in the left and right directions of the hub 20 .

The transmission toothed plate 12 is assembled on the outer end of the inner cylinder 10 , and the transmission toothed plate 12 is a structural type combined with the inner cylinder 10 ; it is also a structural type formed integrally with the inner cylinder 10 .

The one-way ratchet 40 is provided with a pivoting end 41 with a circular edge and a flat-pointed tooth end 42 corresponding to the annular tooth edge 22 on one side of the inner wall of the hub 20 and in a single-rotation locking state. The pivotal end 41 and the tooth end 42 of several one-way ratchets 40 are accommodated in the pivotal end stopper 31 and the tooth end stopper 32 at the bottom of the groove 30 of the inner cylinder 10, and are surrounded by an elastic ring 50 limit.

As shown in Fig. 4 and Fig. 5, two groups of grooves 61, 62 are set in the inner periphery of the inner cylinder 10, which are staggered and opposite in shape, that is, the pivots of the first group of grooves 61 and the second group of grooves 62 The direction of arrangement of the rotating end limiting portion 63 and the gear end limiting portion 64 is opposite. Thereby, as shown in FIG. 5 and FIG. 6 , the locking direction of the one-way ratchet 40 can be changed by using the difference between the first group of grooves 61 and the second group of grooves 62 , so that the one-way ratchet 40 It is suitable for being assembled in the left and right directions of the hub 20 .

It must be added that, in the structures of the aforementioned two embodiments, if the tooth shape of the annular tooth rim 22 provided on the inner wall of the hub 20 is a single oblique type, then when the inner cylinder 10 is reversed and assembled, the annular tooth rim 22 It is also necessary to reversing the assembly accordingly to obtain the locking effect, but if the tooth shape of the annular tooth edge 22 is a double oblique type, it is not limited to this.

As shown in Fig. 7 and Fig. 8, the utility model can also be applied to a flywheel 70 for the wheel hub. The center of the flywheel 70 is provided with a screw hole seat 72 that can be screwed to the external thread section 23 at one end of the hub 20B. The outer surface of the flywheel 70 A transmission toothed plate 71 can be pivoted around the periphery by means of ball bearings, so that the screw hole seat 72 and the transmission toothed plate 71 can rotate in opposite directions. The inner wall of the transmission gear plate 71 is provided with an annular tooth edge 76 .

The one-way ratchet 74 is provided with a pivoting end 741 with a circular edge and a flat pointed tooth end 742 corresponding to the ring-shaped tooth edge 76 on the inner wall of the transmission tooth plate 71 and locked in one direction.

The spacer ring on the outer periphery of the screw hole seat 72 is provided with several grooves 73 for several one-way ratchets 74 to be assembled respectively, and the pivoting ends 741 and teeth for the one-way ratchets 74 are provided at the bottom of each groove 73 respectively. The pivot end limiting portion 731 and the tooth end limiting portion 732 are accommodated by the end 742 .

The pivotal end 741 and the tooth end 742 of several one-way ratchets 74 are accommodated in the pivotal end stopper 731 and the tooth end stopper 732 at the bottom of each groove 73 of the screw hole seat 72, and are fixed by the elastic ring. 75 sets of limits.

The bottom surface of the pivoting end limiting part 731 and the tooth end limiting part 732 of the groove 73 of the screw hole seat 72 is provided with two symmetrical concave arc-shaped surfaces, that is, the pivoting end limiting part 731 and the tooth end limiting part The bottom surface of the part 732 corresponds to and coincides with the pivoting end 741 of the one-way ratchet 74, so that the one-way ratchet 74 can be assembled in the groove 73 of the screw hole seat 72 regardless of whether the tooth end 742 is in a forward or reverse direction. In this way, the one-way ratchet 74 can be adapted to be assembled on the left and right flywheels of the hub 20B.

As shown in Figure 9, the spacer ring of the screw hole seat 72 is provided with two sets of grooves 81 and 82 that are staggered and opposite in shape, that is, the pivot end stoppers of the first set of grooves 81 and the second set of grooves 82 83 and the tooth end limiting portion 84 are arranged in the opposite direction. In this way, the locking direction of the one-way ratchet 74 can be adapted to be assembled on the left, right side.

It must be added that, in the structures of the aforementioned two embodiments, if the tooth shape of the annular tooth rim 22 provided on the inner wall of the hub 20 is a single oblique type, then when the inner cylinder 10 is reversed and assembled, the annular tooth rim 22 It is also necessary to reversing the assembly accordingly to obtain the locking effect, but if the tooth shape of the annular tooth edge 22 is a double oblique type, it is not limited to this.

Wherein, in the embodiment shown in Fig. 7, Fig. 8 and Fig. 9, the state of the one-way ratchet 74 after reversing and assembling is the same principle as the difference shown in Fig. 2, Fig. 3 and Fig. 5 and Fig. 6 .

The utility model has the following effects:

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

1. The utility model can be assembled on the left and right sides of the wheel hub to adapt to the use of different models, thereby reducing manufacturing costs and improving economic benefits.

2. By virtue of the special design of two symmetrical concave arc-shaped surfaces on the bottom surface of the pivoting end limit part and the tooth end limit part of the groove on the inner cylinder, a one-way ratchet is formed regardless of whether the tooth end is straight or straight. Both reverse directions can be assembled in the groove of the inner cylinder, so that the one-way ratchet can be assembled in the left and right directions of the hub, so as to achieve the economic benefits of reducing manufacturing costs and better industrial utilization.

3. By means of another special structural design of two sets of grooves with misplaced intervals and opposite shapes in the inner cylinder, the difference between the one-way ratchet set in the first and second sets of grooves can be changed. The clamping direction makes the one-way ratchet suitable for assembly on the left and right sides of the hub, and also achieves the economic benefits of reducing manufacturing costs and better industrial utilization.

4. The technical features of the utility model can also be applied to the flywheel structure for the wheel hub to obtain the same effect.

Claims (4)

1, a kind of two-way ratchet assemblies of wheel hub, it is used and is mounted on a side and is provided with on the wheel hub of annular tip edge; It comprises inner core, be mounted on the transmission fluted disc of inner core outer end, several unidirectional ratchet and resilient rings; The inner core center is provided with so as to the axis hole of pivot group in wheel hub central shaft one end, and its inner peripheral intervals is equipped with several grooves of establishing for several unidirectional ratchet groups respectively, is provided with hub switch side limiting section and increment limiting section in each bottom portion of groove; Unidirectional ratchet is provided with the hub switch side on rounded limit and corresponding with wheel hub one side inwall annular tip edge and be the flat pointed increment that single rotation direction card moves state; It is characterized in that the hub switch side limiting section of described inner core groove and the space kenel that increment limiting section bottom surface is provided with two all corresponding and identical with the hub switch side of unidirectional ratchet symmetrical concave arc surfaces.

2, a kind of two-way ratchet assemblies of wheel hub, it is used and is mounted on a side and is provided with on the wheel hub of annular tip edge; It comprises inner core, be mounted on the transmission fluted disc of inner core outer end, several unidirectional ratchet and resilient rings; The inner core center is provided with so as to the axis hole of pivot group in wheel hub central shaft one end, and its inner peripheral intervals is equipped with several grooves of establishing for several unidirectional ratchet groups respectively, is provided with hub switch side limiting section and increment limiting section in each bottom portion of groove; Unidirectional ratchet is provided with the hub switch side on rounded limit and corresponding with wheel hub one side inwall annular tip edge and be the flat pointed increment that single rotation direction card moves state; It is characterized in that described inner core spacer ring establish be misplaced, kenel is opposite first and second group groove; The hub switch side limiting section of first and second group groove is opposite with the direction that puts in order of increment limiting section.

3, a kind of wheel hub is with the two-way ratchet assemblies of flywheel, and its is used and be mounted on the neighboring inwall that is pivoted and is provided with the wheel hub of annular tip edge driving cog dish with on the flywheel; It comprises screw seat, several unidirectional ratchet and the resilient rings that are screwed together in wheel hub one end; The screw seat be arranged at the flywheel center and with the mutual contrarotation of transmission fluted disc, its neighboring spacer ring is provided with several grooves of establishing for several unidirectional ratchet groups respectively, is provided with hub switch side limiting section and increment limiting section in each bottom portion of groove; Unidirectional ratchet is provided with the hub switch side on rounded limit and corresponding with transmission fluted disc inwall annular tip edge and be the flat pointed increment that single rotation direction card moves state; It is characterized in that the hub switch side limiting section of described screw seat groove and the space kenel that increment limiting section bottom surface is provided with two all corresponding and identical with the hub switch side of unidirectional ratchet symmetrical concave arc surfaces.

4, a kind of wheel hub is with the two-way ratchet assemblies of flywheel, and its is used and be mounted on the neighboring inwall that is pivoted and is provided with the wheel hub of annular tip edge driving cog dish with on the flywheel; It comprises screw seat, several unidirectional ratchet and the resilient rings that are screwed together in wheel hub one end; The screw seat be arranged at the flywheel center and with the mutual contrarotation of transmission fluted disc, its neighboring spacer ring is provided with several grooves of establishing for several unidirectional ratchet groups respectively, is provided with hub switch side limiting section and increment limiting section in each bottom portion of groove; Unidirectional ratchet is provided with the hub switch side on rounded limit and corresponding with transmission fluted disc inwall annular tip edge and be the flat pointed increment that single rotation direction card moves state; It is characterized in that described screw seat spacer ring establish be misplaced, kenel is opposite first and second group groove; The hub switch side limiting section of first and second group groove is opposite with the direction that puts in order of increment limiting section.

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