TW201834879A - Hub for bicycle wheel including a mandrel, a hub body, a toothed disc base and a ratchet device - Google Patents

Abstract

This invention relates to a hub for a bicycle wheel, including a mandrel, a hub body, a fluted disc base and a ratchet device, wherein the hub body and the fluted disc base are sleeved on the mandrel, and the ratchet device includes a first face gear, a connecting sleeve, a second surface gear and an elastic member, wherein the first surface gear is coupled to the hub body, the connecting sleeve is coupled to the fluted disc base, the second face gear is provided with a connecting hole, the connecting sleeve is inserted into the connecting hole of the second face gear, the second face gear is capable of moving axially relative to the fluted disc base along the mandrel while rotating synchronously with the fluted disc base, one end of the elastic member is abutted against the fluted disc base and the other end is abutted against the second face gear. Because the hub adopts the above-described structure, the hub can withstand a considerable torque without being easily damaged.

Description

Bicycle wheel hub

The invention mainly discloses a wheel hub, especially a bicycle wheel hub.

Please refer to the patent case of "Rear Wheel Hub and Ratchet Tube Assembly" of Chinese Patent No. M537533, which is a rear wheel hub and ratchet tube assembly, which is a combination of a hub body and a ratchet tube, in which a transmission ring is mounted on the At one end of the hub body, the inner wall of the transmission ring is masked with a tooth. One end of the ratchet barrel is provided with a transmission block. The surface of the transmission block is provided with a combination of a plurality of ratchet blocks and elastic members. The outer surface of the transmission block corresponds to the teeth. unit.

However, the ratchet cylinder assembly adopting the above structure achieves ratcheting effect through the cooperation of the annular tooth portion of the transmission ring and the ratchet block. The contact area between the ratchet block and the transmission ring tooth portion is small, and under extreme transmission torque, The ratchet block is easily deformed and damaged due to excessive force, eventually resulting in the ratchet barrel assembly being unable to continue to be used, and the transmission in the above manner is also prone to noise.

In view of the lack of the above-mentioned conventional structure, the inventor has devised a bicycle wheel hub which can overcome all the disadvantages of the above-mentioned conventional structure.

The main purpose of the bicycle wheel hub of the present invention is to provide a wheel hub including a mandrel, a hub body, a toothed disc connection seat and a ratchet device. The hub body and the toothed disc connection seat can be respectively opposite to the mandrel. The ratchet device is rotatably sleeved on the mandrel. The ratchet device is located between the hub body and the tooth plate connection seat. The ratchet device includes a first surface gear, a connecting sleeve, a second surface gear, and an elastic member. The first face gear is sleeved on the mandrel and is capable of being synchronously rotated with the hub body and coupled to the hub body. A side of the first face gear adjacent to the tooth plate connection seat is provided with a first tooth portion. A connecting sleeve is sleeved on the mandrel and can be synchronously rotated with the toothed plate connecting seat and is coupled to the toothed plate connecting seat. An end of the connecting sleeve different from the toothed plate connecting seat is provided along the radial outer peripheral edge. A connecting portion, a connecting hole is provided on a side of the second face gear adjacent to the toothed disc connection seat, the connecting sleeve is inserted into the connecting hole of the second face gear, and the connecting portion abuts against the connecting hole Inner wall surface, The second face gear can rotate synchronously with the tooth plate connection seat and can move relative to the tooth plate connection seat in the axial direction of the mandrel. A second tooth portion is provided on a side of the second face gear adjacent to the hub body. The second tooth portion and the first tooth portion are opposed to each other, the second tooth portion can be engaged with or disengaged from the first tooth portion, and one end of the elastic member abuts against the tooth plate connection seat and is different. The other end of the abutment is against the second surface gear. Because the wheel hub adopts the above structure, it also makes the wheel hub operate more smoothly and smoothly, and effectively reduces the generation of noise, so that the wheel hub can withstand considerable torque. Does not easily slip or damage.

The cross-sectional outline shape of the connecting portion in the radial direction is non-circular.

The cross-sectional contour shape of the inner wall of the connecting hole in the radial direction is the same as the cross-sectional contour shape of the connecting portion in the radial direction. The cross-sectional contour shape of the connecting portion in the radial direction can be a polygon.

The cross-sectional outline shape of the connecting portion in the radial direction is hexagonal.

The elastic member is sleeved on the connecting sleeve.

The second surface gear is provided with a plurality of driving grooves on a side adjacent to the toothed disc connection seat. The ratchet device is provided with a plurality of driving pins and is provided with a plurality of elastic members. The plurality of driving pins correspond to the plurality of driving grooves. One end of the pin is connected to the toothed disc connection seat, and the other end of the pin is inserted into the driving groove.

A plurality of slots are recessed on the side of the toothed disc connection seat adjacent to the hub body. The slots, the driving slots, the driving pins, and the elastic members are the same. The driving pins are the same. Corresponding to several slots and the driving slots, one end of the driving pin is inserted into the slot and the other end is inserted into the driving slot, and the driving pins are evenly distributed in the center. Around the shaft.

The cross-sectional contour shape of the connecting portion in the radial direction is circular, and the cross-sectional contour shape of the inner wall of the connecting hole in the radial direction is the same as the cross-sectional contour shape of the connecting portion in the radial direction.

A receiving groove is recessed on a side of the hub body adjacent to the toothed disc connection seat. The ratchet device is disposed in the receiving groove. The first face gear is fixedly connected to the hub body in a screw lock manner. The first face gear The inner peripheral edge in the radial direction is in the shape of a hexagonal hole. The connecting sleeve is fixedly connected to the toothed disc connection seat in a screw lock manner. The elastic member can push the second surface gear to move in a direction close to the first surface gear.

The wheel hub also has a bearing set, a first stopper and a second stopper. The bearing set includes a first bearing, two second bearings, and a third bearing. The first bearing is disposed at Between the mandrel and the hub body, an inner peripheral edge of the first bearing in the radial direction abuts the mandrel and an outer peripheral edge of the first bearing in the radial direction abuts the hub body, the first bearing is adjacent to the The hub body is different from one end of the toothed disc connection seat, the second bearing is disposed between the mandrel and the toothed disc connection seat, and the second bearing abuts against the mandrel in the radial inner peripheral edge and the first bearing Two bearings in the radial outer periphery abut against the toothed disc connection seat, the second bearing is located on a side of the connecting sleeve different from the hub body, the two second bearings are not in contact with each other, and the third bearing It is arranged between the hub body and the toothed disc connection seat, the inner peripheral edge of the third bearing abuts against the toothed disc connection seat in a radial direction, and the outer peripheral edge of the third bearing abuts against the hub body in a radial direction, The first stopper is fixedly connected to the mandrel in a screw lock manner, and the first stopper abuts against the first stopper. The bearing is different from the end surface on one side of the toothed disc connection seat, the second stopper is fixedly connected to the mandrel in a screw lock manner, and the second stopper abuts on one of the two second bearings Different from the end surface on one side of the hub body.

Other objects, advantages, and novelty of the present invention will be more apparent from the following detailed description and related drawings.

Regarding the technology, means and effects used in the present invention, two preferred embodiments are described in detail below with reference to the drawings. This is for illustration purposes only, and is not limited by such structures in patent applications.

1 to 5 are perspective views, perspective exploded views, and sectional structural views of a first embodiment of a bicycle wheel hub according to the present invention. The wheel hub 10 of the present invention includes a mandrel 20, a hub body 30, a toothed disc connection base 40, and a ratchet device 50; wherein:

The hub body 30 and the toothed disc connection base 40 are respectively sleeved on the mandrel 20 so as to be rotatable relative to the mandrel 20. One side of the hub body 30 adjacent to the toothed disc connection base 40 is recessed with a receiving groove 31.

The ratchet device 50 is disposed in the receiving groove 31 and is located between the hub body 30 and the toothed disc connection base 40. The ratchet device 50 includes a first surface gear 51, a connecting sleeve 52, and a second surface. A gear 53 and an elastic member 54, the first surface gear 51 is sleeved on the mandrel 20 and can be synchronously rotated with the hub body 30 and is coupled to the hub body 30; in the embodiment, the first surface gear 51 is A first tooth portion 511 is provided on a side of the first surface gear 51 adjacent to the tooth plate connection seat 40 in a screw-lock manner, and the first surface gear 51 has a hexagonal inner peripheral edge in a radial direction. Hole-like.

The connecting sleeve 52 is sleeved on the mandrel 20 and can be synchronously rotated with the toothed disk connection seat 40 and is coupled to the toothed disk connection seat 40. The connecting sleeve 52 is fixedly connected to the screw shaft in this embodiment by a screw lock. A connection portion 521 is provided on the outer peripheral edge of the toothed disc connection base 40, the connection sleeve 52 is different from one end of the toothed disc connection base 40 in the radial direction, and the cross-sectional profile shape of the connection part 521 is non-circular in the radial direction. The above-mentioned non-circular shape can be a polygon. The cross-sectional profile shape of the connecting portion 521 in the radial direction is hexagonal in this embodiment.

A connection hole 531 is provided on a side of the second surface gear 53 adjacent to the spur connection base 40. The connection sleeve 52 is inserted into the connection hole 531 of the second surface gear 53, and the connection portion 521 abuts against the connection hole 531. The inner wall surface of the connection hole 531. The radial cross-sectional contour shape of the inner wall of the connection hole 531 is the same as the radial cross-sectional contour shape of the connection portion 521, so that the second surface gear 53 can be synchronized with the toothed disk connection seat 40. At the same time, the second surface gear 53 is provided with a second tooth portion 532 on a side of the second surface gear 53 adjacent to the hub body 30. When the second tooth portion 532 and the first tooth portion 511 face each other, and when the second surface gear 53 is moved relative to the tooth plate connection base 40, the second tooth portion 532 can be engaged with or disengaged from the first tooth portion 511. This first tooth portion 511.

The elastic member 54 is sleeved on the connecting sleeve 52. One end of the elastic member 54 abuts against the toothed disc connection base 40 and the other end abuts against the second surface gear 53. The second surface gear 53 is pushed in a direction close to the first surface gear 51.

The wheel hub 10 further includes a bearing group 60, a first stopper 70 and a second stopper 80. The bearing group 60 includes a first bearing 61, two second bearings 62 and a third bearing. 63. The first bearing 61 is disposed between the mandrel 20 and the hub body 30. An inner peripheral edge of the first bearing 61 abuts on the mandrel 20 in a radial direction and an outer periphery of the first bearing 61 in a radial direction. The edge bears against the hub body 30. The first bearing 61 adjacent to the hub body 30 is different from one end of the toothed disc connection base 40, and the second bearing 62 is disposed between the spindle 20 and the toothed disc connection base 40. In the meantime, the second bearing 62 abuts against the mandrel 20 along the radial inner periphery and the second bearing 62 abuts against the toothed disc connection seat 40 along the radial outer periphery, and the second bearing 62 is located on the connection The sleeve 52 is different from one side of the hub body 30, the two second bearings 62 are not in contact with each other, and the third bearing 63 is disposed between the hub body 30 and the toothed disc connection seat 40, the third bearing An inner peripheral edge of the radial direction 63 abuts against the toothed disc connection base 40 and an outer peripheral edge of the third bearing 63 abuts the hub body 30 in a radial direction.

The first stopper 70 is fixedly connected to the mandrel 20 in a screw-lock manner, and the first stopper 70 abuts an end surface of the first bearing 61 that is different from the side of the toothed disc connection seat 40. The second stopper 80 is fixedly connected to the mandrel 20 in a screw-lock manner, and the second stopper 80 abuts on an end surface of one of the two second bearings 62 that is different from a side of the hub body 30. .

Because the wheel hub 10 uses the above-mentioned first surface gear 51 and the second surface gear 53 to achieve a rattling effect, the wheel hub 10 can be operated more smoothly and smoothly, and the generation of noise can be effectively reduced. And because the toothed disc connecting seat 40 drives the second surface gear 53 to rotate synchronously through the connecting sleeve 52, the wheel hub 10 can withstand a considerable torque and is not prone to slipping or damage.

6 and 7 are perspective exploded views and sectional structural views of a second embodiment of a bicycle wheel hub according to the present invention. The second embodiment of the present case is substantially the same as the first embodiment. The main difference is that a plurality of slots 41a are recessed on the side of the tooth plate connection seat 40a adjacent to the hub body 30a, and the cross-sectional profile of the connection portion 521a in the radial direction. The shape is circular. The radial cross-sectional profile of the inner wall of the connection hole 531a is the same as the radial cross-sectional profile of the connection portion 521a. The second surface gear 53a is provided on one side adjacent to the sprocket connection seat 40a. A driving groove 533a, the ratchet device 50a is provided with a plurality of driving pins 55a and a plurality of elastic members 54a, a plurality of slots 41a, a plurality of driving grooves 533a, a plurality of driving pins 55a, and a plurality of elastic members 54a The same number of driving pins 55a correspond to the slots 41a and the driving slots 533a, respectively. One end of the driving pin 55a is inserted into the slot 41a and the other end is inserted into the drive. In the groove 533a, the driving pins 55a are evenly distributed around the mandrel 20a.

From the above, it can be concluded that the present invention has the following advantages:

1. A bicycle wheel hub according to the present invention, wherein the wheel hub includes a mandrel, a hub body, a toothed disc connection seat and a ratchet device, and the hub body and the toothed disc connection seat can be respectively rotated relative to the mandrel. The ratchet device is disposed on the mandrel, and the ratchet device is located between the hub body and the tooth plate connection seat. The ratchet device includes a first surface gear, a connecting sleeve, a second surface gear, and an elastic member. A side gear is sleeved on the mandrel and can be synchronously rotated with the hub body and is coupled to the hub body. A side of the first face gear adjacent to the toothed disc connection seat is provided with a first tooth portion, and the connection sleeve The sleeve is sleeved on the mandrel and is capable of being synchronously rotated with the toothed disc connecting seat and is coupled to the toothed disc connecting seat. A connecting portion is provided on the outer peripheral edge of the connecting sleeve different from the toothed disc connecting seat along a radial outer peripheral edge. A connection hole is provided on a side of the second surface gear adjacent to the tooth plate connection seat, the connection sleeve is inserted into the connection hole of the second surface gear, and the connection portion abuts an inner wall surface of the connection hole. , The second face gear can The toothed disc connection seat is synchronously rotated and can be moved relative to the toothed disc connection seat along the axial direction of the mandrel. A second tooth portion is provided on a side of the second surface gear adjacent to the hub body. The first teeth are opposed to each other, the second teeth can be engaged with or disengaged from the first teeth, and one end of the elastic member abuts against the toothed disc connection seat and the other end is abutted against The second face gear, because the wheel hub adopts the above structure, at the same time makes the wheel hub operate more smoothly and smoothly, and effectively reduces the generation of noise, so that the wheel hub can withstand considerable torque, and is not prone to slipping or damage. Condition.

However, the above are only the preferred embodiments of the present invention. When the scope of implementation of the present invention cannot be limited by this, the changes in numerical values or the replacement of equivalent elements, or the equivalent according to the scope of the patent application of the present invention Changes and modifications should still fall within the scope of the invention patent.

10‧‧‧ Wheel Hub

20‧‧‧ mandrel

30‧‧‧ wheel body

31‧‧‧container

40‧‧‧toothed disc connector

50‧‧‧ Ratchet

51‧‧‧First face gear

511‧‧‧first tooth

52‧‧‧ connecting sleeve

521‧‧‧ Connection Department

53‧‧‧Second Gear

531‧‧‧ connection hole

532‧‧‧second tooth

54‧‧‧elastic

60‧‧‧bearing set

61‧‧‧First bearing

62‧‧‧Second bearing

63‧‧‧Third bearing

70‧‧‧First stop

80‧‧‧Second stop

20a‧‧‧ mandrel

30a‧‧‧wheel body

40a‧‧‧toothed disc connector

41a‧‧‧slot

50a‧‧‧Ratchet device

521a‧‧‧connection

53a‧‧‧Second Gear

531a‧‧‧Connecting hole

533a‧‧‧drive slot

54a‧‧‧elastic

55a‧‧‧Drive Pin

FIG. 1 is a perspective view of a first embodiment of a bicycle wheel hub according to the present invention. FIG. 2 is an exploded perspective view of a first embodiment of a bicycle wheel hub according to the present invention. Fig. 3 is a sectional structural view of a first embodiment of a bicycle wheel hub according to the present invention. FIG. 4 is a cross-sectional structural view of a second tooth portion of the bicycle wheel hub according to the first embodiment of the present invention separated from the first tooth portion. FIG. 5 is a sectional structural view of a first embodiment of a bicycle wheel hub according to the present invention from another perspective. 6 is an exploded perspective view of a second embodiment of a bicycle wheel hub according to the present invention. FIG. 7 is a sectional structural view of a second embodiment of a bicycle wheel hub according to the present invention.

Claims (10)

A bicycle wheel hub includes: a mandrel; a hub body and a toothed disc connecting seat, the hub body and the toothed disc connecting seat are respectively sleeved on the mandrel so as to be rotatable relative to the mandrel; a ratchet device The ratchet device is located between the hub body and the tooth plate connection seat. The ratchet device includes a first surface gear, a connecting sleeve, a second surface gear and an elastic member. The first surface gear is sleeved. A first tooth portion is disposed on the mandrel and can be synchronously rotated with the hub body, a first tooth portion is provided on a side of the first surface gear adjacent to the tooth plate connection seat, and the connection sleeve is sleeved on the core. The shaft can be synchronously rotated with the toothed disc connecting seat and is coupled to the toothed disc connecting seat. A connecting portion is provided along an outer peripheral edge of the connecting sleeve different from the end of the toothed disc connecting seat in a radial direction, and the second surface is provided. A connection hole is provided on a side of the gear adjacent to the toothed disc connection seat, the connection sleeve is inserted into the connection hole of the second surface gear, and the connection portion abuts an inner wall surface of the connection hole, and the second surface Gears can be connected with this chainring The seat rotates synchronously and can move along the axis of the mandrel relative to the tooth plate connection seat. A side of the second surface gear adjacent to the hub body is provided with a second tooth portion, the second tooth portion and the first tooth portion. Opposite each other, the second tooth portion can be engaged with or disengaged from the first tooth portion, and one end of the elastic member abuts against the toothed disc connection seat and the other end abuts against the second surface. gear. The bicycle wheel hub according to claim 1, wherein a cross-sectional profile shape of the connecting portion in a radial direction is non-circular. The bicycle wheel hub according to claim 2, wherein the radial cross-sectional profile shape of the inner wall of the connection hole is the same as the radial cross-sectional profile shape of the connection portion, and the radial cross-sectional profile shape of the connection portion can be polygonal . The bicycle wheel hub according to claim 3, wherein a cross-sectional profile shape of the connecting portion in a radial direction is hexagonal. The bicycle wheel hub according to claim 2, wherein the elastic member is sleeved on the connecting sleeve. The bicycle wheel hub according to claim 1, wherein a plurality of driving grooves are provided on a side of the second surface gear adjacent to the tooth plate connection seat, and the ratchet device is provided with a plurality of driving pins and a plurality of elastic members. Each driving pin corresponds to several driving grooves. One end of the driving pin is connected to the toothed disc connection seat, and the other end is inserted into the driving groove. The bicycle wheel hub according to claim 6, wherein a side of the chain wheel connecting seat adjacent to the hub body is recessed with a plurality of slots, the slots, the drive slots, the drive pins, and the slot. The number of the elastic members is the same. The driving pins correspond to the slots and the driving slots. One end of the driving pin is inserted in the slot and the other end is inserted in the driving slot. Within, the driving pins are evenly distributed around the mandrel. The bicycle wheel hub according to claim 7, wherein the cross-sectional profile shape of the connecting portion in the radial direction is circular, and the cross-sectional profile shape of the inner wall of the connecting hole in the radial direction is the same as the cross-sectional profile shape of the connecting portion in the radial direction. The bicycle wheel hub according to any one of claims 1 to 8, wherein a side of the hub body adjacent to the toothed disc connection seat is recessed with a receiving groove, and the ratchet device is disposed in the receiving groove. The first The face gear is fixedly connected to the hub body by means of a screw lock. The inner face of the first face gear in the radial direction has a hexagonal hole shape. The connection sleeve is fixedly connected to the toothed disc connection seat by means of a screw lock. The elastic member can The second surface gear is pushed to move in a direction close to the first surface gear. The bicycle wheel hub according to any one of claims 1 to 8, wherein the wheel hub further has a bearing set, a first stopper and a second stopper, the bearing set including a first bearing , Two second bearings and a third bearing, the first bearing is disposed between the mandrel and the hub body, the inner peripheral edge of the first bearing abuts against the mandrel in the radial direction, and the first bearing is along the The radial outer periphery abuts against the hub body, the first bearing is adjacent to the hub body at an end different from the toothed disk connection seat, and the second bearing is disposed between the mandrel and the toothed disk connection seat, the An inner peripheral edge of the second bearing abuts against the mandrel in a radial direction and an outer peripheral edge of the second bearing abuts against the toothed disc connection seat in a radial direction. The second bearing is located on the connecting sleeve and is different from the hub body. On one side, the two second bearings are not in contact with each other, the third bearing is disposed between the hub body and the toothed disc connection seat, and the third bearing abuts against the toothed disc connection seat in the radial direction. And the third bearing abuts against the hub body along a radial outer periphery, and the first stopper is screw-locked. The second stopper is fixedly connected to the mandrel, and the first stopper abuts against an end surface of the first bearing that is different from the side of the toothed disc connection seat. The second stopper is fixedly connected to the mandrel in a screw lock manner. And the second stopper abuts one of the two second bearings which is different from an end surface on one side of the hub body.