TWI590958B - Bicycle hub with clutch mechanism - Google Patents

Description

Bicycle wheel with clutch mechanism

The invention relates to the technical field of a bicycle, in particular to a hub structure for a bicycle (BMX bicycle) for off-road sports.

In addition to the general bicycle structure, the BMX Freestyle bicycle is equipped with a pedal on both sides of the front and rear wheels of the BMX bicycle. The user can control the bicycle by standing on the pedal to generate a variety of static or Dynamic changes. However, the traditional BMX bicycle wheel design will cause the pedal crank to automatically reverse when the rear wheel is idling, which may cause injury to the user.

Taiwan Patent No. M356633 discloses a hub. The technique of the prior art mentions that a polygonal bump pushes a roller on a clutch ring to protrude outward, and the roller contacts a combination of a transmission ring and a hub body to drive the hub body to rotate. Effect. The patent case only provides a clutch trip.

U.S. Patent No. 6,130,299,293 discloses a hub structure. The technical content of the prior patent mentions that a clutch mechanism, a pawl and a spring constitute a clutch mechanism. When the pawl of the clutch mechanism protrudes to engage an internal ring gear, the hub can be driven to rotate. The patent case only provides a clutch trip.

It is an object of the present invention to provide a bicycle hub having a clutch mechanism, There is a possibility that a hub can provide a two-stage clutch stroke, thereby increasing the starting stroke of the bicycle, thereby giving the user more time to perform a changing posture or movement.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a bicycle hub having a clutch mechanism that has a situation in which the pedal crank does not automatically rotate backwards, thereby reducing the pedal crank injury and the user's chance.

In order to achieve the above object and effect, the vehicle hub structure disclosed in the present invention comprises a body integrally coupled with a transmission ring, a driving member and a hub axle. Further, a first clutch mechanism and a second clutch mechanism are disposed at The body is internally and driven by the drive member. The first clutch mechanism and the second clutch mechanism each provide a clutch stroke, which can improve the starting stroke of the bicycle, and the pedal crank does not automatically generate a backward rotation.

The above and other objects and advantages of the present invention will be described in detail with reference to the accompanying drawings.

10‧‧‧Bicycle

12‧‧‧ frame

14‧‧‧ Wheels

16‧‧‧ Wheels

18‧‧‧Steps

20‧‧‧ pedal crank

22‧‧‧ pedal crank

24‧‧‧ drive chain

26‧‧‧Chapter

28‧‧·Wheel spindle

30‧‧·wheels

32‧‧‧Ontology

34‧‧‧ drive ring

36‧‧‧ accommodating space

38‧‧‧ drive components

40‧‧‧Buckle gear

42‧‧‧ drive block

44‧‧‧First clutch mechanism

46‧‧‧ drive surface

48‧‧‧stop bumps

50‧‧‧ clutch components

52‧‧‧Act

54‧‧‧roller

56‧‧‧Operating space

58‧‧‧ inner wall

60‧‧‧Clutch spacing

62‧‧‧ accommodating hollow

64‧‧‧Second clutch mechanism

66‧‧‧Clutch card block

68‧‧‧Clutch

70‧‧‧Clutch bumps

72‧‧‧Thrust elements

74‧‧‧shims

76‧‧‧ bushings

78‧‧‧Circle

80‧‧‧ Department of Management

82~88‧‧‧ bearing

90‧‧‧ Activity gap

92‧‧‧Perforation

Figure 1 is a schematic view of the position of a bicycle in accordance with the present invention.

Fig. 2 is an external view of the present invention.

Figure 3 is an exploded view of the present invention.

Figure 4 is a schematic view of the structure of the present invention.

Fig. 5 is a structural schematic view showing the inner wall surface of the transmission ring of the first clutch mechanism of the present invention.

Figure 6 is an external view of the second clutch mechanism of the present invention.

Figure 7 is a schematic view showing the partial structure of the present invention.

Figure 8 is a schematic view showing the action of the second clutch mechanism for driving the bicycle in the forward direction of the bicycle Figure.

Figure 9 is a schematic view showing the action of the first clutch mechanism for rotating in the forward direction of the bicycle.

Figure 10 is a schematic view showing the action of the first clutch mechanism for rotating in the bicycle backward direction.

Figure 11 is a schematic view showing the action of the second clutch mechanism for rotating in the bicycle backward direction.

Figure 12 is a schematic view showing the state of the first clutch mechanism of the present invention corresponding to the bicycle retreating.

Figure 13 is a schematic view showing the structure of the driving surface of the present invention.

Figure 14 is a schematic view showing another structure of the clutch block of the second clutch mechanism of the present invention with respect to the clutch bump.

Figure 15 is an exploded view showing the structure of another embodiment of the first clutch mechanism of the present invention.

Figure 16 is a schematic view showing the structure of the present invention in another embodiment of the first clutch mechanism.

Referring to FIG. 1 , a BMX bicycle 10 series frame 12 is disposed on each of the front and rear sides of a wheel 14 and 16 , and each of the wheels 14 and 16 has a step bar 18 on each side thereof, wherein the wheel 14 is called The front wheel, the wheel 16 is called the rear wheel. Secondly, the two pedal cranks 20 and 22 are combined with a drive toothed disc 24, and the combination of the pedal cranks 20 and 22 and the drive chainring 24 is mounted on the frame 12 and between the two wheels 14 and 16. A chain 26 links the drive chain 24 and a hub 30 of the wheel 16. The pedal cranks 20 and 22 are stepped to cause the drive gear plate 24 to rotate the chain 26. The chain 26 drives the hub 30 and the wheel 16 to rotate, and the bicycle 10 moves forward.

Referring to FIG. 2, the hub 30 is a plurality of interiors of a body 32. Rotating elements, engaging elements and other matching elements. A hub axle 28 is mounted at the axial center of the hub 30. The hub mandrel 28 passes through the rotating member, the engaging member and the mating member, and the two ends of the hub 30 are mounted to the frame 12 (see Fig. 1).

Referring to Figures 3 and 4, the hub 30 includes a combination of the body 32 and a transmission ring 34. The axial space of the body 32 is a penetrating configuration, the transmission ring 34 is mounted inside one end of the body 32, and the transmission ring 34 is integrated with the body 32. For example, the drive ring 34 can be coupled to the body 32 by means of a screw lock. Next, a receiving space 36 is formed in the axial direction of the transmission ring 34, and the accommodating space 36 is a through structure. In addition, the body 32 and the transmission ring 34 may also be an integrally formed structure.

A drive member 38 includes a sprocket 40 and a drive block 42. The driving block 42 is coupled to the sprocket gear 40. The driving block 42 is mounted in the accommodating space 36. The sprocket gear 40 is located outside the accommodating space 36 and is used to join the chain (not shown).

A first clutch mechanism 44 includes a plurality of drive faces 46, a plurality of stop bumps 48, and a clutch member 50. Each of the driving faces 46 and the stop projections 48 are formed on an outer surface of the driving block 42. The clutch member 50 is provided with a plurality of rollers 54 at the periphery of a ring element 52. An operating space 56 is formed at the center of the ring body 52.

Referring to FIG. 5 , the driving block 42 is mounted on the operating space 56 , and each of the rollers 54 corresponds to the driving surface 46 and the inner wall surface 58 of the accommodating space 36 . The roller 54 is adjacent to the stop projection 48. The roller 54 and the inner wall surface 58 of the accommodating space 36 can be separated by a clutch pitch 60. Then, a plurality of accommodating recesses 62 are respectively formed between the driving surface 46 and the stopper bumps 48, and the accommodating recesses 62 are adjacent to the stopper bumps 48. In addition, the roller 54 is movably inserted into and removed from the receiving recess 62.

Referring to Figures 3 and 6, the present invention includes a second clutch mechanism 64. The second departure The mechanism 64 is at the bottom of the first clutch mechanism 44. The second clutch mechanism 64 includes a plurality of clutch cards 66 and a clutch plate 68. Each of the clutch cards 66 is formed at the bottom of the ring body 52. The clutch plate 68 has a plurality of clutch projections 70. The clutch plates 68 are engaged at the outer bottom of the ring body 52. The clutch protrusions 70 are located in the operating space 56 and are respectively located between the adjacent two clutch cards 66.

Referring again to Figures 3 and 4, the present invention includes a pushing element 72. The thrust element 72 is disposed inside the body 32. The thrust element 72 can be a wavy spring piece or other similar element. The number of the thrust elements 72 can be increased according to actual needs. One end of the thrust element 72 is pushed against the bottom of the clutch piece 68 of the second clutch mechanism 64.

Further, the present invention further includes a gasket 74 and a sleeve 76. The sleeve 76 includes a ring portion 78 and a tube portion 80, wherein the ring portion 78 is formed at one end of the tube portion 80. The ring portion 78 of the sleeve 76 is located at the bottom of the ring body 52.

Referring to Figures 4 and 7, the sleeve 76 and the spacer 74 are assembled in the axial direction of the hub spindle 28. The tube portion 80 passes through the clutch plate 68 and the thrust member 72 and rests on the spacer 74. In other words, one end of the thrust element 72 rests on the spacer 74 and the other end rests on the clutch plate 68. It should be noted that the bottom surface of the ring portion 78 abuts the end surface of the clutch block 70 of the clutch piece 68 such that the clutch plate 68 and the ring body 52 have a movable gap 90 therebetween.

Secondly, an appropriate number of rotating elements, such as bearings 82, 84, 86 and 88, may be disposed within the combination of the various components described above, the hub mandrel 28 passing through the axial interior of the body 32 and simultaneously passing through each of the bearings 82~ 88.

It is disclosed in FIG. 5 that the roller 54 of the first clutch mechanism 44 and the transmission ring 34 have the clutch pitch 60. In FIG. 7, the clutch plate 68 and the ring body 52 are disclosed. The gap 90 is such that the ring body 52 can be separated from the clutch plate 68 and be movable.

When the driving block 42 rotates in the forward direction of the bicycle, the driving block 42 contacts the roller 54 of the ring body 52, and the ring body 52 has mobility with respect to the clutch piece 68, so the ring body 52 and the roller The combination of the posts 54 can be rotated a distance first without the combination of the drive ring 34 and the body 32.

Referring to FIGS. 8 and 9, after the foregoing combination of the ring body 52 and the roller 54 is rotated for a distance, the clutch block 66 contacts the clutch projection 70 of the clutch piece 68 (see FIG. 8). . Since the thrust member 72 is pushed against the outer bottom surface of the clutch piece 68, the clutch piece 68 has a predetermined resistance effect. The clutching block 66 contacts the clutching piece 68. The combination of the ring body 52 and the roller 54 is subjected to a predetermined resistance provided by the clutching piece 68. Therefore, the driving block 42 is slightly rotated, and the driving surface 46 can be further Each of the rollers 54 is urged toward the inner wall surface 58 of the transmission ring 34. Each of the rollers 54 is sandwiched by the inner wall surface 58 of the transmission ring 34 and the driving surface 46 of the driving block 42. Therefore, the rotational torque of the driving block 42 can be transmitted to the transmission ring 34 so that the body 32 can be rotated. . At this time, the direction of rotation of the wheel (not shown) is the forward direction of the bicycle (not shown).

According to the foregoing description, the driving block 42 is rotated until the bicycle moves forward, and the rotation of the ring body 52 is brought into contact with the clutching piece 68, and the driving surface of the driving block 42 The step of pushing the rollers 54 toward the inner wall surface 58 of the transmission ring 34, so that the invention can increase the starting stroke of the bicycle by the two-stage clutch stroke, thereby allowing the user to have more time to perform. Change posture or movement.

Referring to FIG. 10, the driving block 42 is stepped toward the bicycle backward direction (the pedal crank is reversely rotated), the stopper projection 48 can contact the roller 54, and the roller 54 can fall into the receiving recess. A good positioning state is formed in the space 62. Thus, the driving block 42 can be driven in the reverse direction. The ring body 52 is combined with the roller 54 so that the roller 54 does not contact the inner wall surface 58 of the transmission ring 34. Referring to FIG. 11, the combination of the ring body 52 and the roller 54 is reversely rotated, and the clutch block 66 is separated from the clutch projection 70 of the clutch piece 68. Thus, the body 32 and the wheel (not shown) are not driven or interfered with by the drive block 42 (see Figure 10).

Even if the combination of the ring body 52 and the roller 54 rotates in the opposite direction, the clutch block 66 is formed to be in contact with the clutch projection 70 of the clutch piece 68 because the roller 54 and the transmission ring 34 are still Maintaining the disengaged state, the torsional force generated by the reverse rotation of the ring body 52 and the clutch plate 68 is not transmitted to the transmission ring 34.

Referring to Fig. 12, the wheel (not shown) is rotated in a direction in which the bicycle (not shown) is retracted. For example, the bicycle slides up and down on a slope, the body 32 generates rotation, but each of the rollers 54 and the transmission The inner wall surface 58 of the accommodating space 36 of the ring 34 is separated, so that the driving block 42 of the driving member 38 does not rotate. In other words, the pedal crank (not shown) interlocked with the drive block 42 does not cause reverse rotation, and the pedal crank does not hit the user.

Referring to FIG. 13, the driving surface 46 of the driving block 42 is designed as a curved surface, so that the driving distance of the roller 54 can be adjusted by adjusting the curvature of the curved surface.

Referring to FIG. 14 , the length of the clutch protrusion 70 of the clutch piece 68 of the present invention may be increased, so that the distance between the clutch protrusion 70 and the clutch card block 66 is reduced, so that the second clutch can be adjusted. The meshing distance of the mechanism 64 (clutch stroke). Further, the clutching projection 70 is in abutting state with the two adjacent clutching blocks 66. According to the disclosure of FIG. 9, the driving block 42 can be used for a short distance. 46 pushes the roller 54 against the inner wall surface 58 of the drive ring 34 and the bicycle can move forward.

According to the disclosure of FIG. 14, the second clutch mechanism 64 may not be provided in the embodiment of the present invention, such that the hub 30 is only rotated by a clutch stroke provided by the driving surface 46 of the first clutch mechanism 44. .

Referring to Figure 15, the design of the first clutch mechanism 44 of the present invention is disclosed. The first clutch mechanism 44 includes a plurality of the driving surfaces 46 , a plurality of the stopper bumps 48 , and a clutch member 50 . Each of the driving faces 46 and the stop projections 48 are formed on an outer surface of the driving block 42. The clutch member 50 is provided with a plurality of rollers 54 at the periphery of a ring body 52. The bottom of the ring body 52 is a through hole 92. The driving surface 46 is a curved surface. The receiving recess 62 is formed between the driving surface 46 and the stopping protrusion 48 , and the receiving recess 62 is adjacent to the stopping protrusion 48 .

Referring to Figures 15 and 16, the ring portion 78 of the sleeve 76 corresponds to the bottom of the ring body 52. One end of the tube portion 80 passes through the ring body 52 and the thrust member 72 and rests on the spacer 74. on. One end of the thrust element 72 rests on the spacer 74 and the other end abuts against the clutch member 50 or the outer bottom of the ring body 52. Thus, the embodiment provides only a clutch stroke with the drive surface 46 of the first clutch mechanism 44.

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.

30‧‧·wheels

32‧‧‧Ontology

34‧‧‧ drive ring

36‧‧‧ accommodating space

38‧‧‧ drive components

40‧‧‧Buckle gear

42‧‧‧ drive block

44‧‧‧First clutch mechanism

46‧‧‧ drive surface

48‧‧‧stop bumps

50‧‧‧ clutch components

52‧‧‧Act

54‧‧‧roller

56‧‧‧Operating space

64‧‧‧Second clutch mechanism

66‧‧‧Clutch card block

68‧‧‧Clutch

70‧‧‧Clutch bumps

72‧‧‧Thrust elements

74‧‧‧shims

76‧‧‧ bushings

78‧‧‧Circle

80‧‧‧ Department of Management

82~88‧‧‧ bearing

Claims (8)

A bicycle hub with a clutch mechanism for mounting on a wheel of a bicycle and incorporating a hub spindle and a chain, comprising: a body; a transmission ring coupled to the body, and the transmission ring has an axial direction a driving member, a driving element is coupled to a driving block, the driving block is installed in the accommodating space, the sprocket gear is located outside the accommodating space and is coupled to the chain; a first clutch mechanism Between the outer surface of the driving block and the inner wall surface of the accommodating space; the first clutch mechanism includes a clutch member, a plurality of driving surfaces and a plurality of stop bumps, wherein each of the driving surfaces and the stopping protrusion a block is formed on an outer surface of the driving block, the clutch member is configured with a plurality of rollers at a periphery of a ring body, and an operation space is formed at a center of the ring body; the driving block is installed in the operation space, and each of the rollers corresponds to the roller a driving surface and an inner wall surface of the accommodating space, the roller is adjacent to the stopping protrusion, the roller is spaced apart from the inner wall surface of the accommodating space by a clutching distance; a thrust element is disposed inside the body The thrust element One end is pushed against the outer bottom of the clutch member of the first clutch mechanism; the driving member rotates in a direction in which the bicycle advances, and each of the driving surfaces pushes each roller to contact an inner wall surface of the accommodating space, such that the body and The driving member rotates in a direction in which the bicycle is retracted, and each of the stopping protrusions respectively contacts the roller, and each of the rollers is separated from a wall surface of the accommodating space, so that the driving member is coupled with the roller. The member rotates synchronously, the wheel does not rotate in the direction in which the bicycle retreats; the wheel rotates in the direction in which the bicycle retreats, and each of the rollers is separated from the inner wall surface of the accommodating space, and the driving member does not rotate. The bicycle hub with a clutch mechanism according to claim 1, further comprising a plurality of receiving recesses formed between the driving surface and the stopping lug, and the receiving recess is hollow Adjacent to the stop bumps. A bicycle hub having a clutch mechanism according to claim 1 or 2, wherein the driving surface is a curved surface. The bicycle hub with a clutch mechanism according to claim 1, further comprising a sleeve and a gasket, the sleeve comprising a ring portion and a tube portion, the ring portion being formed at one end of the tube portion, the sleeve And the gasket is assembled in an axial direction of the hub spindle, the ring portion of the sleeve corresponding to the bottom of the ring body, one end of the pipe portion passing through the ring body and the thrust member and resting on the gasket The thrust element has one end resting on the spacer and the other end resting on the outer bottom of the clutch member. A bicycle hub with a clutch mechanism for mounting on a wheel of a bicycle and incorporating a hub spindle and a chain, comprising: a body; a transmission ring coupled to the body, and the transmission ring has an axial direction a driving member, a driving element is coupled to a driving block, the driving block is installed in the accommodating space, the sprocket gear is located outside the accommodating space and is coupled to the chain; a first clutch mechanism Between the outer surface of the driving block and the inner wall surface of the accommodating space; the first clutch mechanism includes a clutch member, a plurality of driving surfaces and a plurality of stopping protrusions, each of the driving surface and the stopping protrusion Formed on an outer surface of the driving block, the clutch member is configured with a plurality of rollers around a ring body, and an operating space is formed at a center of the ring body; the driving block is installed in the operating space, and each of the rollers corresponds to drive a surface of the inner wall of the accommodating space, the roller is adjacent to the stop protrusion, and the roller is spaced apart from the inner wall surface of the accommodating space by a clutch spacing; a second clutch mechanism is located at the bottom of the first clutch mechanism; the second clutch mechanism includes a plurality of clutch card blocks and a clutch plate, each of the clutch card blocks being formed at the bottom of the ring body, the clutch The sheet has a plurality of clutches, the clutches are engaged at the bottom of the outer surface of the ring body, and the clutch bumps are located in the operating space and are respectively located between two adjacent clutch blocks; a thrust element, Disposed inside the body, one end of the thrust element is pushed against the bottom of the clutch plate of the second clutch mechanism; the driving member rotates in a direction in which the bicycle advances, and each driving surface pushes each roller, the clutch member Rotating to cause the clutch card block to contact the clutch protrusion, and further, the driving surface urges the roller to protrude to contact the inner wall surface of the accommodating space, so that the body and the wheel rotate synchronously; the driving member faces the bicycle Rotating in a backward direction, each of the stop protrusions respectively contacting the roller, and each of the rollers is separated from a wall surface of the accommodating space, so that the driving member rotates synchronously with the clutch member, the wheel does not face the bicycle Rotated back direction; the direction of the bicycle wheel is rotated backward, each of the rollers are away from the wall surface of the accommodating space, the rotation of the drive member is not generated. The bicycle hub with a clutch mechanism according to claim 5, further comprising a sleeve and a gasket, the sleeve comprising a ring portion and a tube portion, the ring portion being formed at one end of the tube portion, the sleeve And the gasket is assembled in an axial direction of the hub spindle, the ring portion of the sleeve corresponding to the bottom of the ring body, the pipe portion passing through the clutch plate and the thrust member and resting on the gasket, the thrust One end of the component rests on the spacer, and the other end abuts the clutch piece, and the bottom surface of the ring portion abuts the end surface of the clutch protrusion of the clutch piece, so that the clutch piece and the ring body have a movable gap. . The bicycle hub with the clutch mechanism as described in claim 5 of the patent application further includes multiple accommodations a recessed space is formed between the driving surface and the stop bump, and the receiving recess is adjacent to the stop bump. A bicycle hub having a clutch mechanism according to claim 5 or 7, wherein the driving surface is a curved surface.