TWM581998U - Clutch hub structure - Google Patents

Abstract

The clutch hub structure comprises: a driving member having a body, a plurality of pawls and a plurality of magnetic members; one end of the pawls is pivotally connected to the seat body; the magnetic members are disposed on the seat body; a transmission member having a plurality of teeth; and a raking member having a plurality of driving portions corresponding to the passive portions of the pawls; when the driving member is rotated in a direction, the driving portion of the swaying member drives the thorns The claw rotates away from the seat body and engages with the tooth portion of the transmission member; when the driving member rotates in the reverse direction, the driving portion of the swaying member will move away from the claws and be subjected to the magnetic members It is attracted to be separated from the tooth of the transmission member.

Description

Clutch flower hub structure

The present invention relates to bicycles, and more particularly to a clutch hub structure.

The Hub is a component on the bicycle that is placed at the axle of the rear wheel so that the rear wheel is mounted on a frame. The hub has a ratchet structure, or a one-way transmission structure. When the crank is rotated forward, through the transmission of a chain, the hub can drive the rear wheel to rotate, causing the bicycle to move forward. When the crank is rotated in the opposite direction, the hub will cut off the drive so that the rear wheel does not rotate in the opposite direction.

The ratchet structure of the conventional flower hub is provided with a spring on the pawl, which normally engages the pawl with the ratchet of the transmission member, so that the forward rotation can drive the wheel to rotate. When the rotation is reversed, the pawl cannot be ratcheted with the transmission member to cut off the transmission.

The main problem with such a ratchet structure can occur when the spring is fatigued. Since the ratchet of the transmission member cannot mesh with the ratchet in the reverse rotation, the pawl is repeatedly oscillated, and the elastic member is repeatedly compressed and relaxed. Under the action of a long time, the spring is prone to fatigue, so that the pawl cannot be biased in the normal state to mesh with the ratchet of the transmission member, and the flower hub cannot work normally.

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a clutch hub structure that does not have the problem of fatigue caused by the use of a spring for extended periods of time.

In order to achieve the above objects and effects, the clutch hub structure disclosed in the present invention comprises: a casing having a through passage; and an axle passing through the passage of the casing to rotate relative to the casing; a gear member is sleeved on the axle and located outside the casing; a driving member having a body, a plurality of pawls and a plurality of magnetic members; the seat body is sleeved on the axle and located in the shell The body of the body is connected to the gear member; one end of the pawl is pivotally connected to the seat body; the magnetic members are disposed on the seat body to attract the pawls to rotate in a direction close to the seat body; Each of the pawls has a passive portion; a transmission member is sleeved on the axle, located in the passage of the housing, and coupled to the housing; the transmission member has a plurality of teeth; and a tilting member, Nested in the axle, located in the passage of the housing; the tilting member has a plurality of driving portions corresponding to the passive portions of the pawls; and when the driving member is rotated in a direction, the driving portion of the tilting member Receiving the passive portions of the pawls, rotating the pawls in a direction away from the seat body and engaging with the teeth of the transmission member; when the driving member rotates in the opposite direction, the driving portion of the pawl Will leave the passive portion of the pawls, and the magnetic members attract the pawls toward The rotational direction of the seat body, such that the pawl tooth portion of the transmission from the member.

In an embodiment, the seat body and the gear member are fabricated as a single component.

In one embodiment, the base of the driving member is provided with a plurality of pivot portions; one end of each pawl has a shaft portion coupled to the pivot portions.

In one embodiment, the base of the driving member is provided with a plurality of blocking portions, and the pawls are in contact with the blocking portions after being rotated by a predetermined angle away from the seat body.

In an embodiment, the passive portions of the pawls protrude beyond the seat.

In an embodiment, a spacer is further disposed on the axle, and the two ends thereof abut against the gear member and the driving member respectively.

In an embodiment, a support member is further disposed between the swing member and the axle to slidably contact the rocking member.

In one embodiment, the swaying member has a guiding groove; the supporting member has a plurality of concave holes, and each of the concave holes is provided with a spring and a bead; the beads are located in the guiding groove.

In an embodiment, the method further includes two cover members screwed to the axle; one of the cover members abuts against one end of the gear member, and the other cover member abuts against the housing relative to the gear member The other end.

The objects and functions disclosed in the present invention are set forth in the accompanying drawings, and the description of the various embodiments and combinations thereof.

10‧‧‧shell

12‧‧‧ channel

14‧‧‧Axle

16‧‧‧ bearing

18‧‧‧ Gear parts

20‧‧‧ bearing

22‧‧‧ Drives

24‧‧‧ body

26‧‧‧ pawl

28‧‧‧Magnetic parts

30‧‧‧ Bearing

31‧‧‧Seal ring

32‧‧‧Band

34‧‧ ‧ blocking

36‧‧‧Axis

38‧‧‧ Passive Department

40‧‧‧ spacers

42‧‧‧ Transmission parts

44‧‧‧ teeth

46‧‧‧掣动

48‧‧‧End

50‧‧‧掣部

52‧‧‧ convex

54‧‧‧Guide

56‧‧‧Support

58‧‧‧ Spring

60‧‧‧Beads

62,64‧‧‧ covers

Figure 1 is a perspective view of a preferred embodiment of the present invention.

Figure 2 is an exploded view of a preferred embodiment of the present invention.

Figure 3 is a cross-sectional view of a preferred embodiment of the present invention.

Figure 4 is a perspective view of the gear member and the driving member of a preferred embodiment of the present invention.

Figure 5 is a perspective view of the swaying member of a preferred embodiment of the present invention.

Fig. 6 and Fig. 7 are cross-sectional views showing a state in which the pawl is moved by the driving portion, in a preferred embodiment of the present invention.

Referring to FIGS. 1 to 3, a clutch hub structure according to a preferred embodiment of the present invention includes:

A housing 10 having two strips on the outer side thereof for a plurality of strips (not shown) and having a through passage 12 in the axial direction.

A wheel axle 14, through the passage 12 of the housing 10, is free to rotate relative to the housing 10. Two bearings 16 are disposed between the axle 14 and the housing 10. The axle 14 is coupled to a frame (not shown).

A gear member 18, as shown in FIG. 4, is sleeved on the axle 14 and located outside the casing 10. In this embodiment, a two bearing 20 is disposed between the gear member 18 and the axle 14 The gear member 18 is rotatable relative to the axle 14. The gear member 18 is coupled to a chain (not shown) and is rotated by the chain.

A driving member 22, as shown in Fig. 4, has a body 24, three pawls 26 and three magnetic members 28. The seat body 24 is sleeved on the axle 14 and located in the passage 12 of the casing 10. The seat body 24 is coupled to the gear member 18 for rotation therewith. In the present embodiment, the seat body 24 and the gear member 18 are fabricated as a single component. A bearing 30 is disposed between the seat body 24 and the axle 14 to allow the seat body 24 to rotate relative to the axle 14. In addition, a sealing ring 31 is disposed on the outer side surface of the base body 24, and an outer end thereof is in contact with the housing 10. The outer side surface of the base body 24 is provided with three pivot portions 32 and a third stop portion 34. In the present embodiment, the equipotions 32 are generally circular grooves; the stops 34 are projections extending obliquely outward from one side of the pivots 32. One end of the three pawls 26 has a shaft portion 36 which is disposed in the pivot portion 32 of the seat body 24 so that the pawls 26 can rotate the pivot portion 36 as a center of rotation. When the pawls 26 are pivoted away from the seat body 24 by a predetermined angle, they are blocked by the stops 34 and cannot continue to rotate. The magnetic members 28 are embedded in the base body 24 and are respectively located on the other side of the pivot portions 32 with respect to the blocking portions 34. In the present embodiment, as shown in FIG. 6, the base body 24 is provided with a three-hole slot for the magnetic members 28 to be embedded therein. The pawls 26 are made of a material that can be attracted by a magnetic force. In a normal state, the pawls 26 are attracted to the magnetic members 28 and abut against the seat body 24. In addition, the pawls 26 each have a portion protruding beyond the seat body 24 to form a passive portion 38.

In another embodiment, the seat body 24 is made of a magnetic material whereby the seat body 24 itself is a magnetic member 28.

In this embodiment, a spacer 40 is further disposed on the axle 14 , and the two ends thereof respectively abut against the bearing 20 of the gear member 18 and the bearing 30 of the driving member 22 .

A transmission member 42 is sleeved on the axle 14 and located in the passage 12 of the casing 10 and connected to the casing 10 and corresponding to the driving member 22. In the present embodiment, the transmission member 42 is an annular member having a threaded outer surface that is threaded into a thread on the wall of the passage 12 of the housing 10. The transmission The inner side of the 42 has a plurality of teeth 44, and the teeth 44 are helical teeth, and the direction of the deflection is opposite to the inclination of the pawls 26.

A ram 46, as shown in FIG. 5, is sleeved in the axle 14, located in the passage 12 of the housing 10. In the present embodiment, the swaying member 46 is an annular member having an end portion 48 facing one end of the driving member 22. The outer side of the end portion 48 is provided with three urging portions 50, and the inner end of the end portion 48 has three convex portions 52. In addition, an annular guide groove 54 is formed on the inner side surface of the damper member 46. The swaying portion 50 of the swaying member 46 corresponds to the passive portion 38 of the pawl 26.

A support member 56 is sleeved on the axle 14 and located in the passage 12 of the housing 10. In this embodiment, a plurality of recessed holes are provided on the outer side surface, and a spring 58 and a bead 60 are disposed in each recessed hole. The support member 56 is located in the swaying member 46 such that the beads 60 fall into the guide groove 54 of the swaying member 46, so that the support member 56 is in contact with the damper member 46 in a relatively slidable manner. The bearing 16 then abuts one end of the support member 56.

The embodiment further includes two cover members 62, 64 screwed to the axle 14; one of the cover members 62 abuts against one end of the gear member 18, and the other cover member 64 abuts against the housing 10. Located at the other end relative to the gear member 18, and securing the aforementioned components together.

Referring to FIG. 6, when the gear member 18 is driven to rotate in a first direction (the direction in which the bicycle is advanced), the driving member 22 rotates together and the outer ends of the pawls 26 are provided. The swaying portion 50 of the swaying member 46 is approached. Next, the passive portions 38 of the pawls 26 will contact the tilting portions 50, causing the pawls 26 to rotate away from the seat body 24, such that the pawls 26 and the transmission member 42 The teeth 44 mesh. At this time, the transmission member 42 is rotated by the driving member 22, thereby causing the housing 10 to rotate to drive a wheel (not shown) to rotate through the spokes.

Referring to FIG. 7, when the gear member 18 is driven to rotate in a second direction (in the opposite direction to the first direction), the driving member 22 will rotate in the opposite direction, causing the pawls 26 to be separated. The swaying portion 50 of the swaying member 46 is opened. At this time, the pawls 26 are attracted by the magnetic members 28 away from the teeth 44 of the transmission member 42. At this time, the transmission member 42 and the housing 10 are not driven.

The above is a preferred embodiment and the design of the present invention. The preferred embodiments and the drawings are merely illustrative and not intended to limit the scope of the invention. The scope of the rights covered by the content of the "Scope of Patent Application" is not within the scope of the invention and is the scope of the applicant's rights.

Claims (10)

A clutch hub structure includes: a housing having a through passage; an axle passing through the passage of the housing to rotate relative to the housing; a gear member sleeved on the axle and located An outer side of the housing; a driving member having a body, a plurality of pawls and a plurality of magnetic members; the seat body sleeved on the axle, located in the passage of the housing, and coupled to the gear member; One end of the pawl is pivotally connected to the seat body; the magnetic members are disposed on the seat body to attract the pawls to rotate in a direction close to the seat body; the pawls respectively have a passive portion; a transmission member Nesting on the axle, in the passage of the casing, and connected to the casing; the transmission member has a plurality of teeth; and a raking member sleeved on the axle, located in the passage of the casing The turret has a plurality of driving portions corresponding to the passive portions of the pawls; when the driving member rotates in one direction, the driving portion of the swaying member contacts the passive portions of the spurs, so that The pawl rotates away from the seat and engages the teeth of the transmission member When the driving member rotates in the opposite direction, the driving portion of the tilting member will move away from the passive portions of the pawls, and the magnetic members attract the pawls to rotate in a direction close to the seat body, so that the pawls Separated from the teeth of the transmission member. The clutch hub structure of claim 1, wherein the seat body and the gear member are fabricated as a single component. The clutch hub structure of claim 1, wherein the base of the driving member is provided with a plurality of pivot portions; one end of each pawl has a shaft portion coupled to the pivot portions. The clutch hub structure of claim 1, wherein the base of the driving member is provided with a plurality of blocking portions, and the pawls are in contact with the predetermined distance after being rotated away from the seat body. Waiting for the block. The clutch hub structure of claim 1, wherein the passive portion of the pawl protrudes beyond the seat. The clutch hub structure of claim 1, further comprising a spacer disposed on the axle and having two ends abutting the gear member and the driving member respectively. The clutch hub structure of claim 1, further comprising a support member located between the tilting member and the axle to be in contact with the rocking member in a relatively slidable manner. The clutch hub structure of claim 7, wherein the tilting member has a guiding groove; the supporting member has a plurality of concave holes, and each of the concave holes is provided with a spring and a bead; the beads are located In the guide groove. The clutch hub structure according to claim 1, further comprising a cover member screwed to the axle; wherein one cover member abuts one end of the gear member, and the other cover member abuts against The housing is located opposite the other end of the gear member. The clutch hub structure of claim 7, wherein the gear portion of the transmission member is a helical tooth and a direction in which the deflection direction is inclined with respect to the pawls.