TWM524894U - A bicycle bottom bracket assembly, a bicycle hub assembly, and a bicycle head part assembly - Google Patents

Abstract

The bicycle bottom bracket assembly 53 disclosed herein comprises an adapter member 55, an outer race 71, an inner race 72, and a plurality of rollers 73. The adapter member 55 is mounted to a bottom bracket hanger 12 of a bicycle frame. The outer race 71 is mounted to the adapter member 55. The inner race 72 is mounted to a crank axle. The plurality of rollers 73 are disposed between the outer race 71 and the inner race 72. Each of the rollers 73 has an axially curved outer surface 73a with respect to the rotational center axis R of the roller 73. The outer race 71 has a first axially curved contact surface 71a with respect to the rotational center axis R. The first axially curved contact surface 71a contacts the axially curved outer surface 73a of the roller 73.

Description

Bicycle bottom bracket assembly, bicycle hub assembly, and bicycle head assembly

The technology disclosed herein pertains to a bicycle bottom bracket assembly, a bicycle hub assembly, and a bicycle head assembly.

In general, the bottom bracket assembly is disposed between the bottom bracket suspension of the bicycle frame and the crankshaft of the bicycle crank assembly (see US6755095). Specifically, the bottom bracket assembly includes a bearing disposed between the bottom bracket suspension and the crankshaft. The crankshaft is rotatable relative to the bottom bracket suspension via bearings of the bottom bracket assembly.

In conventional bottom bracket assemblies, the positional accuracy of the crankshaft is determined by the dimensional accuracy of the bottom bracket suspension.

For example, in the case of insufficient dimensional accuracy, the central axis of rotation of the crankshaft does not necessarily coincide with the central axis of the bottom bracket suspension formed into the shape of a circular cylinder, or the axis parallel to the center of the suspension of the bottom bracket. In this case, the crankshaft is stably rotated about the axis of the bottom bracket assembly. It is difficult.

In view of this problem, it is an object of the present invention to provide a bottom bracket assembly that automatically aligns the axis of rotation of the rotating member. Further, it is an object of the present invention to provide a bicycle hub assembly and a bicycle head assembly that are capable of automatically aligning the rotational axes of the rotating members.

(1-1) The bicycle bottom bracket assembly disclosed herein includes an adapter member, an outer race, an inner race, and a plurality of rollers. The adapter member is constructed to be mounted to the bottom bracket suspension of the bicycle frame. The outer race is constructed to be mounted to the adapter member. The inner race is constructed to be mounted to the crankshaft.

A plurality of rollers are disposed between the outer race and the inner race. Each of the rollers has a central axis of rotation. Each of the rollers has an axially curved outer surface with respect to the central axis of rotation of the roller. The outer race has a first axially curved contact surface with respect to the central axis of rotation of the roller. The first axially curved contact surface is constructed to form an axially curved outer surface of each of the contact rollers.

In the bottom bracket assembly, the outer race, the inner race, and the plurality of rollers are disposed between the bottom bracket suspension and the crank axle via the adapter member. The first axially curved contact surface of the outer race contacts the axially curved outer surface of each of the rollers. The term "axially curved contact surface" as used herein means that the axially curved surface is constructed to bend relative to the central axis of rotation of the roller and to form an axially curved outer surface of each of the contact rollers. .

This contact causes the crankshaft to be mounted to the bottom via the bottom bracket assembly When the carriage is suspended, the axis of rotation of the crankshaft can be automatically aligned. In other words, the bottom bracket assembly can automatically align with the axis of rotation of the crankshaft.

(1-2) The bicycle bottom bracket assembly can be constructed as follows. The inner race has a second axially curved contact surface with respect to the central axis of rotation of the roller. The second axially curved contact surface is constructed to form an axially curved outer surface of each of the contact rollers.

In the bottom bracket assembly, the second axially curved contact surface of the inner race contacts the axially curved outer surface of each of the rollers.

This contact enables the axis of rotation of the crankshaft to be automatically and securely aligned when the crankshaft is mounted to the bottom bracket suspension via the bottom bracket assembly. In other words, the bottom bracket assembly can automatically and securely align the axis of rotation of the crankshaft.

(1-3) The bicycle bottom bracket assembly can be constructed as follows. The bottom bracket assembly additionally includes a seat member. The seat member is made of a non-metallic material. The seat member is constructed to be positioned between the inner race and the crankshaft of the bicycle crank assembly.

This seat member can reduce the noise that occurs when the roller rotates.

(1-4) The bicycle bottom bracket assembly can be constructed as follows. The outer race is a cup-shaped outer race. The inner race is a tapered inner race.

The configuration of the outer race and the inner race enables such a bearing unit comprising a cup-shaped outer race and a tapered inner race to be durable and easy to maintain.

(2-1) The bicycle bottom bracket assembly disclosed herein includes an adapter member, an outer race, an inner race, and a plurality of rollers. Adapter components are built A bottom bracket suspension that is mounted to the bicycle frame. The outer race is constructed to be mounted to the adapter member. The inner race is constructed to be mounted to the crankshaft. A plurality of rollers are disposed between the outer race and the inner race. Each of the rollers has a central axis of rotation. The roller is displaceable relative to the outer race in an axial direction along the central axis of rotation.

In the bottom bracket assembly, the rollers are displaceable relative to the outer race in an axial direction along the central axis of rotation.

This displacement of the rollers allows the axis of rotation of the crankshaft to be automatically aligned when the crankshaft is mounted to the bottom bracket suspension via the bottom bracket assembly. In other words, the bottom bracket assembly can automatically align with the axis of rotation of the crankshaft.

(2-2) The bicycle bottom bracket assembly can be constructed as follows. The outer race is a cup-shaped outer race. The inner race is a tapered inner race.

The configuration of the outer race and the inner race enables such a bearing unit comprising a cup-shaped outer race and a tapered inner race to be durable and easy to maintain.

(2-3) The bicycle bottom bracket assembly can be constructed as follows. The bottom bracket assembly additionally includes a seat member. The seat member is made of a non-metallic material. The seat member is constructed to be positioned between the inner race and the crankshaft.

This seat member can reduce the noise that occurs when the roller rotates.

(3-1) The bicycle hub assembly disclosed herein includes a hub axle, a hub shell, a first outer race, a first inner race, and a plurality of first rollers. The hub shell is constructed to be rotatably mounted to the hub axle. The first outer race is constructed to be mounted to the hub shell. The first inner race is constructed to be mounted to the wheel Hub axle.

A plurality of first rollers are disposed between the first outer race and the first inner race. Each of the first rollers has a first central axis of rotation. Each of the first rollers has a first axially curved outer surface relative to a first central axis of rotation of the first roller. The outer race has a first axially curved contact surface with respect to a first central axis of rotation of the first roller. The first axially curved contact surface is configured to contact the first axially curved outer surface of each of the first rollers.

In the hub assembly, an outer race, an inner race, and a plurality of rollers are disposed between the hub shell and the hub axle. The first axially curved contact surface of the outer race contacts the first axially curved outer surface of each of the first rollers.

This contact enables the axis of rotation of the hub axle to be automatically aligned when the hub shell is mounted to the hub axle via the hub assembly. In other words, the hub assembly can automatically align with the axis of rotation of the hub axle.

(3-2) The bicycle hub assembly can be constructed as follows. The first inner race has a second axially curved contact surface with respect to a first central axis of rotation of the first roller. The second axially curved contact surface is configured to contact the first axially curved outer surface of each of the first rollers.

In the hub assembly, the second axially curved contact surface of the first inner race contacts the first axially curved outer surface of each of the first rollers.

This contact enables the axis of rotation of the hub axle to be automatically and securely aligned when the hub shell is mounted to the hub axle via the hub assembly. In other words, the hub assembly can automatically and securely align the axis of rotation of the hub axle.

(3-3) The bicycle hub assembly can be constructed as follows. Hub assembly Contains the first member. The first member is made of a non-metallic material. The first member is constructed to be positioned between the first inner race and the hub axle.

This first seat member enables the noise generated when the first roller rotates to be lowered.

(3-4) The bicycle hub assembly can be constructed as follows. The first outer race is a cup-shaped outer race. The first inner race is a tapered inner race.

The configuration of the first outer race and the first inner race enables such a bearing unit comprising a cup-shaped outer race and a tapered inner race to be durable and provide ease of maintenance.

(3-5) The bicycle hub assembly can be constructed as follows. The hub assembly further includes a sprocket mounting member, a second outer race, a second inner race, and a plurality of second rollers. The second outer race is constructed to be mounted to the sprocket mounting member. The second inner race is constructed to be mounted to the hub axle.

A plurality of second rollers are disposed between the second outer race and the second inner race. Each of the second rollers has a second central axis of rotation. Each of the second rollers has a second axially curved outer surface relative to a second central axis of rotation of the second roller. The second outer race has a third axially curved contact surface with respect to a second central axis of rotation of the second roller. The third axially curved contact surface is configured to form a second axially curved outer surface that contacts each of the second rollers.

In the hub assembly, an outer race, an inner race, and a plurality of rollers are disposed between the sprocket mounting member and the hub axle. The third axially curved contact surface of the second outer race contacts the second axially curved outer surface of each of the second rollers.

This contact enables the axis of rotation of the hub axle to be automatically aligned when the hub assembly is mounted to the sprocket mounting member and the hub axle. In other words, the hub assembly can automatically align with the axis of rotation of the hub axle.

(3-6) The bicycle hub assembly can be constructed as follows. The second inner race has a fourth axially curved contact surface with respect to a second central axis of rotation of the second roller. The fourth axially curved contact surface is constructed to form a second axially curved outer surface that contacts each of the second rollers.

In the hub assembly, the fourth axially curved contact surface of the second inner race contacts the second axially curved outer surface of each of the second rollers.

This contact enables the axis of rotation of the hub axle to be automatically and securely aligned when the hub assembly is mounted on the sprocket mounting member and the hub axle. In other words, the hub assembly can automatically and securely align the axis of rotation of the hub axle.

(3-7) The bicycle hub assembly can be constructed as follows. The hub assembly further includes a second member. The second member is made of a non-metallic material. The second member is constructed to be positioned between the second inner race and the hub axle.

This second seat member enables the noise generated when the second roller rotates to be lowered.

(3-8) The bicycle hub assembly can be constructed as follows. The second outer race is a cup-shaped outer race. The second inner race is a tapered inner race.

The configuration of the second outer race and the second inner race enables such a bearing unit comprising a cup-shaped outer race and a tapered inner race to be durable and easy to maintain.

(4-1) The bicycle hub assembly disclosed herein includes a hub axle and a wheel The hub shell, the first outer race, the first inner race, and the plurality of first rollers. The hub shell is constructed to be rotatably mounted to the hub axle. The first outer race is constructed to be mounted to the hub shell. The first inner race is constructed to be mounted to the hub axle. A plurality of first rollers are disposed between the first outer race and the first inner race. Each of the first rollers has a central axis of rotation. The first roller is displaceable relative to the first outer race in an axial direction along the central axis of rotation.

In the hub assembly, the first roller is displaceable relative to the first outer race in an axial direction along the central axis of rotation.

This displacement of the first roller allows the axis of rotation of the hub axle to be automatically aligned when the hub assembly is mounted to the hub axle and hub shell. In other words, the hub assembly can automatically align with the axis of rotation of the hub axle.

(4-2) The bicycle hub assembly can be constructed as follows. The first outer race is a cup-shaped outer race. The first inner race is a tapered inner race.

The configuration of the first outer race and the first inner race enables such a bearing unit comprising a cup-shaped outer race and a tapered inner race to be durable and provide ease of maintenance.

(4-3) The bicycle hub assembly can be constructed as follows. The bicycle hub assembly further includes a first member. The first member is made of a non-metallic material. The first member is constructed to be positioned between the first inner race and the hub axle.

This first seat member enables the noise generated when the first roller rotates to be lowered.

(4-4) The bicycle hub assembly can be constructed as follows. Bicycle wheel The assembly further includes a sprocket mounting member, a second outer race, a second inner race, and a plurality of second rollers. The second outer race is constructed to be mounted to the sprocket mounting member. The second inner race is constructed to be mounted to the hub axle. A plurality of second rollers are disposed between the second outer race and the second inner race. Each of the second rollers has a central axis of rotation. The second roller is displaceable relative to the second outer race in an axial direction along the central axis of rotation.

In the hub assembly, the second roller is displaceable relative to the second outer race in an axial direction along the central axis of rotation.

This displacement of the second roller allows the axis of rotation of the hub axle to be automatically and securely aligned when the hub assembly is mounted to the sprocket mounting member and the hub axle. In other words, the hub assembly can automatically and securely align the axis of rotation of the hub axle.

(4-5) The bicycle hub assembly can be constructed as follows. The second outer race is a cup-shaped outer race. The second inner race is a tapered inner race.

The configuration of the second outer race and the second inner race enables such a bearing unit comprising a cup-shaped outer race and a tapered inner race to be durable and easy to maintain.

(4-6) The bicycle hub assembly can be constructed as follows. The bicycle hub assembly further includes a second member. The second member is made of a non-metallic material. The second member is constructed to be positioned between the second inner race and the hub axle.

This second seat member enables the noise generated when the second roller rotates to be lowered.

(5-1) The bicycle head assembly disclosed herein includes an outer seat Circle, inner race, and multiple rollers. A plurality of rollers are disposed between the outer race and the inner race. Each of the rollers has a central axis of rotation. Each of the rollers has an axially curved outer surface with respect to the central axis of rotation of the roller. The outer race has a first axially curved contact surface with respect to the central axis of rotation of the roller. The first axially curved contact surface is constructed to form an axially curved outer surface of each of the contact rollers.

In the head unit assembly, a plurality of rollers are disposed between the outer race and the inner race. The first axial contact surface of the outer race contacts the axially curved outer surface of each of the rollers.

This contact enables the axes of rotation of the outer race and the inner race to be automatically aligned as the roller rotates between the outer race and the inner race. In other words, the head assembly can automatically align with the axis of rotation.

(5-2) The bicycle head component assembly can be constructed as follows. The inner race has a second axially curved contact surface with respect to the central axis of rotation of the roller. The second axially curved contact surface is constructed to form an axially curved outer surface of each of the contact rollers.

In the head unit assembly, a plurality of rollers are disposed between the outer race and the inner race. The second axially curved contact surface of the inner race contacts the axially curved outer surface of each of the rollers.

This contact enables the axis of rotation of the outer and inner races to be automatically and securely aligned as the roller rotates between the outer race and the inner race. In other words, the head assembly can automatically and securely align the axis of rotation.

(5-3) The bicycle head component assembly can be constructed as follows. The outer race is a cup-shaped outer race. The inner race is a tapered inner race.

The configuration of the outer race and the inner race enables such a bearing unit comprising a cup-shaped outer race and a tapered inner race to be durable and easy to maintain.

1‧‧‧Bicycle

11‧‧‧ frame

11a‧‧‧ frame body

11b‧‧‧ front fork

11c‧‧‧ head tube

11d‧‧‧steering machine column

11e‧‧‧ end section

12‧‧‧Bottom bracket suspension

12a‧‧‧ mother screw part

12b‧‧‧ side part

13‧‧‧Hands

13a‧‧‧ Leading

14‧‧‧ brake lever

15‧‧‧Front hub assembly

17‧‧‧ Front wheel

19‧‧‧ Rear wheel

21‧‧‧ Front brake device

23‧‧‧ Rear brake device

25‧‧‧ Drive section

27‧‧‧ crank assembly

27a‧‧‧Right crank arm

27b‧‧‧ Left crank arm

29‧‧‧ rear hub assembly

30‧‧‧shift section

31‧‧‧ Front derailleur

33‧‧‧ rear derailleur

34‧‧‧ pedal

35‧‧‧Front sprocket assembly

36‧‧‧After sprocket assembly

41‧‧‧Front hub axle

43‧‧‧Front hub shell

43a‧‧ ‧ part

45‧‧‧ Wheeled body

51‧‧‧ crankshaft

53‧‧‧Bottom bracket assembly

54‧‧‧Dust tube

55‧‧‧Adapter components

55a‧‧‧Small diameter section

55b‧‧‧large diameter section

55c‧‧‧ Male screw section

56‧‧‧ Sealing member, O-ring

57‧‧‧seat components

57a‧‧‧Second installation

57b‧‧‧ Cover part

57c‧‧‧ joint part

57d‧‧‧ side wall

58‧‧‧Ball bearings

59‧‧‧ bearing

61‧‧‧ rear hub axle

63‧‧‧Rear hub shell

63a‧‧ ‧ part

65‧‧‧Sprocket mounting components

65a‧‧‧

68‧‧‧ anchor bolts

71‧‧‧Outer seat

71a‧‧‧First axially curved contact surface

72‧‧‧ inner seat

72a‧‧‧Second axial bending contact surface

73‧‧‧Roller

73a‧‧‧Axially curved outer surface

75‧‧‧ Holder

75a‧‧‧ openings

150‧‧‧ bearing assembly

250‧‧‧ bearing assembly

350‧‧‧ bearing assembly

C1‧‧‧Rotation axis

C2‧‧‧Rotation axis

C3‧‧‧Rotation axis

C4‧‧‧Rotation axis

R‧‧‧Rotating central axis

A portion of this original disclosure will now be formed with reference to the accompanying drawings in which: FIG. 1 is a side view of a bicycle according to first to fourth embodiments of the present invention; FIG. 2 is a bottom bracket according to the first embodiment. Detailed view of the assembly; Fig. 3 is an enlarged cross-sectional view of the bearing according to the first and fourth embodiments of the present invention; Fig. 4 is a detailed view of the rear hub assembly according to the second embodiment; And an enlarged sectional view of the bearing of the third embodiment; Fig. 6 is a detailed view of the front hub assembly according to the third embodiment; and Fig. 7 is a detailed view of the front part assembly according to the fourth embodiment.

Selected embodiments of the present technology will now be explained with reference to the drawings. It will be apparent to those skilled in the art that the following description of the embodiments of the present invention is provided by way of illustration only, but not intended to limit the invention as defined by the scope of the accompanying claims .

First embodiment [Overall configuration]

The configuration of the bicycle according to the first embodiment will be described below. As shown in FIG. 1, the bicycle 1 includes a frame 11, a handle 13, a front hub assembly 15, a front wheel 17, a rear wheel 19, a front brake device 21, a rear brake device 23, a gear change portion 30, and Drive portion 25 (including crank assembly 27 and rear hub assembly 29).

The frame 11 has a frame body 11a and a front fork 11b. The front fork 11b is rotatably attached to the frame body 11a. The handle 13 is fixed to the front fork 11b. For example, the front fork 11b is rotatably attached to the head tube 11c of the frame body 11a via the head unit assembly 24. The handle 13 is fixed to a steering column 11d of the front fork 11b (see Fig. 7).

As shown in Figure 6, the front hub assembly 15 is supported on the front fork 11b. The front hub assembly 15 mainly has a front hub axle 41 and a front hub shell 43. The front hub shell 43 is constructed to be rotatably mounted to the front hub axle 15a. A front wheel 17 (eg, a spoke) is attached to the front hub shell 43.

The front hub axle 41 is held by the wheel securing mechanism 45 on the front fork 11b. The wheel securing mechanism 45 is substantially identical to the conventional mechanism.

As shown in FIG. 1, the front wheel 17 and the rear wheel 19 are rotatably attached to the front fork 11b and the rear portion of the frame 11 through the front hub assembly 15 and the rear hub assembly 29, respectively.

The front brake device 21 and the rear brake device 23 are operated by the manipulation of the brake lever 14. Since the front brake device 21 and the rear brake device 23 have configurations substantially the same as those of the conventional configurator, the description will be omitted.

The shifting portion 30 is attached to the frame 11. The shifting portion 30 includes a front derailleur 31 and a rear derailleur 33. The front derailleur 31 moves the bicycle chain from a front sprocket to an adjacent front sprocket by a shifting operation such as a shift lever (not shown) attached to the left side of the handle 13.

The front derailleur 31 is attached to, for example, a seat tube of the frame 11. The rear derailleur 33 moves the bicycle chain 9 from a rear sprocket to an adjacent rear sprocket by a shifting operation such as a shift lever (not shown) attached to the right side of the handle 13. The rear derailleur 33 is attached, for example, to the larger diameter portion of the chain stay and the seat stay of the frame 11.

As shown in FIG. 1, the drive portion 25 primarily has a crank assembly 27, a rear hub assembly 29, a front sprocket assembly 35, and a rear sprocket assembly 36.

As shown in FIG. 2, the crank assembly 27 includes a crank shaft 51, a right crank arm 27a, and a left crank arm 27b. The crank shaft 51 is rotatably supported by a lower portion of the frame 11. Specifically, the crankshaft 51 is rotatably supported on the bottom bracket suspension 12 via the bottom bracket assembly 53. Details of the bottom bracket assembly 53 will be described later. The right crank arm 27a and the left crank arm 27b are attached to the crank shaft 51.

The crank shaft mounting portions of the right crank arm 27a and the left crank arm 27b are fixedly attached to both ends of the crank shaft 51, respectively, so that the pedaling torque can be transmitted from the right crank arm 27a and the left crank arm 27b to the crank shaft 51. A pair of pedals 34 are attached to the pedal shaft mounting portions of the right crank arm 27a and the left crank arm 27b, respectively (see Fig. 1).

The front sprocket assembly 35 has a configuration that is substantially identical to the conventional configurator. The front sprocket assembly 35 is constructed to be attached to the right crank arm 27a for The body can be rotated. The front sprocket assembly 35 includes at least one front sprocket.

As shown in FIG. 4, the rear hub assembly 29 is supported on the rear member of the frame 11. The rear hub assembly 29 mainly includes a rear hub axle 61, a rear hub shell 63, and a sprocket mounting member 65. Both ends of the rear hub axle 61 are held on the rear member of the frame 11. The rear hub shell 63 is constructed to be rotatably mounted to the rear hub axle 61.

The sprocket mounting member 65 is attached to the rear hub shell 63 around the rear hub axle 61. The sprocket mounting member 65 integrally rotates with the rear hub shell 63 with respect to the rear hub axle 61. A rear wheel 19 (eg, a spoke) is attached to the rear hub shell 63.

The rear hub axle 61 is held by the wheel securing mechanism 45 on the rear member of the frame 11. The wheel securing mechanism 45 is substantially identical to the conventional mechanism.

The rear sprocket assembly 36 has a configuration that is substantially identical to the conventional configurator. The rear sprocket assembly 36 is supported by the rear hub assembly 29 via the sprocket mounting member 65. Specifically, the rear sprocket assembly 36 is mounted to the sprocket mounting member 65 and rotates with the sprocket mounting member 65. The rear sprocket assembly 36 includes at least one rear sprocket, preferably a plurality of rear sprocket assemblies.

[Configuration of the bottom bracket assembly]

As shown in Figures 2 and 3, a bottom bracket assembly 53 is provided to rotatably attach the crank axle 51 to the bottom bracket suspension 12. The bottom bracket assembly 53 is disposed on the crank axle 51.

The bottom bracket assembly 53 includes an adapter member 55, a dust tube 54, and a bearing 59. Preferably, the bottom bracket assembly 53 further includes a seat Member 57.

The adapter member 55 is constructed to be mounted to the bottom bracket suspension 12. The adapter member 55 includes a smaller diameter portion 55a and a larger diameter portion 55b.

The smaller diameter portion 55a is substantially formed into a cylindrical shape. The smaller diameter portion 55a is screwed to the bottom bracket suspension 12. For example, as shown in FIG. 3, the male screw portion 55c is formed on the outer peripheral portion of the smaller diameter portion 55a.

The female screw portion 12a is formed on the inner peripheral portion of the bottom bracket suspension 12. The smaller diameter portion 55a is mounted to the bottom bracket suspension 12 by screwing the male screw portion 55c to the female screw portion 12a.

The inner peripheral portion of the smaller diameter portion 55a is disposed radially outward with respect to the rotational axis C1 of the crank shaft 51 from the crank shaft 51 at a predetermined interval from the crank shaft 51 in the radial direction. The inner peripheral portion of the smaller diameter portion 55a is fitted to each of both ends of the dustproof pipe 54 (refer to Fig. 2). A dustproof tube 54 is disposed within the bottom bracket suspension 12. A conventional sealing member 56 is disposed between the end of the dustproof tube 54 and the inner peripheral portion of the smaller diameter portion 55a in the radial direction. For example, the O-ring 56 is used as a sealing member.

As shown in FIG. 3, the larger diameter portion 55b is integrally formed with the smaller diameter portion 55a. The larger diameter portion 55b is substantially formed into a cylindrical shape. The diameter of the larger diameter portion 55b is larger than the diameter of the smaller diameter portion 55a. The larger diameter portion 55b abuts the bottom bracket suspension 12 directly or through a spacer. For example, the larger diameter portion 55b is adjacent to the bottom bracket suspension in the axial direction parallel to the rotation axis C1 of the crank shaft 51. On the side portion 12b of the frame 12.

The inner peripheral portion of the larger diameter portion 55b is disposed radially outward from the crank shaft 51 at a predetermined interval from the crank shaft 51 in the radial direction with respect to the rotation axis C1. The bearing 59 and the seat member 57 are disposed between the larger diameter portion 55b and the crank shaft 51.

In the illustrated embodiment, the seat member 57 is made of a non-metallic material. For example, the seat member 57 is made of synthetic resin. As shown in FIG. 3, the seat member 57 is constructed to be positioned between the bearing 59 and the crankshaft 51. For example, the seat member 57 is constructed to be positioned between the inner race 72 of the bearing 59 and the crankshaft 51. The configuration of the inner race 72 will be described below.

Specifically, the seat member 57 is mounted on the crank shaft 51. The seat member 57 includes a second mounting portion 57a, a cover portion 57b, and an engaging portion 57c. The second mounting portion 57a is substantially formed in a cylindrical shape. The inner peripheral portion of the second mounting portion 57a is attached to the outer peripheral portion of the crank shaft 51.

A cover portion 57b is provided to prevent foreign matter from intruding into the bottom bracket suspension 12. The cover portion 57b is integrally formed with the second mounting portion 57a.

The engaging portion 57c positions the bearing 59. The engaging portion 57c is formed in a concave shape and extends in the circumferential direction of the second mounting portion 57a. The inner race 72 of the bearing 59 is disposed on the joint portion 57c. For example, one of the side walls 57d of the engaging portion 57c is an annular projection. This side wall 57d of the engaging portion 57c elastically engages the inner race 72 of the bearing 59.

Therefore, the inner race 72 of the bearing 59 is disposed between the pair of side walls of the engaging portion 57c in the axial direction. Since the seat member 57 is made of a non-metal material Made of material, the noise generated by the pedaling operation can be reduced. However, the seat member 57 can be omitted from the bottom bracket assembly 53 as needed.

As shown in FIG. 3, the bearing 59 is disposed between the larger diameter portion 55b of the adapter member 55 and the crank shaft 51 via the seat member 57. That is, the bearing 59 is disposed between the adapter member 55 and the seat member 57. The bearing 59 is an angular roller bearing.

The bearing 59 includes an outer race 71, an inner race 72, a retaining member 75, and a plurality of rollers 73.

The outer race 71 is constructed to be mounted to the adapter member 55. The outer race 71 is mounted to the inner peripheral portion of the larger diameter portion 55b of the adapter member 55. For example, the outer race 71 is a cup-type outer race 71. The outer race 71 is press-fitted to the inner peripheral portion of the larger diameter portion 55b of the adapter member 55.

The outer race 71 has a first axially curved contact surface 71a with respect to the central axis of rotation R of the roller 73. The first axially curved contact surface 71a is constructed to form an axially curved outer surface 73a of the contact roller 73 (described below).

For example, the first axially curved contact surface 71a is curved relative to the central axis of rotation R of the roller 73. Specifically, the first axially curved contact surface 71a is curved into an arc-shape.

The inner race 72 is constructed to be mounted to the crankshaft 51. For example, the inner race 72 is attached to the outer peripheral portion of the crankshaft 51 via the seat member 57. Specifically, the inner race 72 is a cone-shaped inner race 72. The inner race 72 is mounted to the outer peripheral portion of the seat member 57, for example, the joint portion 57c that is mounted to the seat member 57 as described above.

The inner race 72 has a second axially curved contact surface 72a with respect to the central axis of rotation R of the roller 73. The second axially curved contact surface 72a is constructed to form an axially curved outer surface 73a of the contact roller 73 (described below).

For example, the second axially curved contact surface 72a is curved relative to the central axis of rotation R of the roller 73. Specifically, the second axially curved contact surface 72a is curved in an arc shape.

A holder 75 is provided to hold a plurality of rollers 73. As shown in FIG. 3, the holder 75 is disposed between the outer race 71 and the inner race 72. The holder 75 is substantially formed in a ring shape. The holder 75 includes a plurality of openings 75a. The openings 75a are formed at a predetermined interval in the peripheral direction. A plurality of rollers 73 are rotatably disposed and held in the opening 75a, respectively.

As shown in FIG. 3, a plurality of rollers 73 are disposed between the outer race 71 and the inner race 72. For example, the roller 73 is formed into a barrel shape. The plurality of rollers 73 are held between the outer race 71 and the inner race 72 by the holder 75 in a state in which the plurality of rollers 73 are respectively disposed in the opening 75a of the holder 75.

Each of the rollers 73 has a central axis of rotation R. Each of the rollers 73 has an axially curved outer surface 73a with respect to the central axis of rotation R.

For example, the axially curved outer surface 73a is curved relative to the central axis of rotation R of the roller 73. The axially curved outer surface 73a contacts the first axially curved contact surface 71a of the outer race 71.

Each of the rollers 73 is displaceable relative to the outer race 71 in an axial direction parallel to the central axis of rotation R. Specifically, each of the rollers 73 is in a radial direction with respect to the first axially curved contact surface of the outer race 71 71a is slidable.

The central axis of rotation R is used as a reference line for defining the axially curved outer surface 73a, the first axially curved contact surface 71a, and the second axially curved contact surface 72a. The rotation central axis R is inclined at a predetermined angle with respect to the rotation axis C1 of the crankshaft 51. For example, the rotation central axis R is apart from the rotation axis C1 in the radial direction, and has an increased distance from the central portion of the crankshaft 51 toward the end portion of the crankshaft 51 in the axial direction parallel to the rotation axis C1.

In the above-described bottom bracket assembly 53, first, the adapter member 55 is mounted to the bottom bracket suspension 12. Next, the outer race 71 is mounted to the adapter member 55. Alternatively, the outer race 71 can be pre-mounted to the adapter member 55 before the adapter member 55 is mounted to the bottom bracket suspension 12. Then, a plurality of rollers 73 are attached to the holder 75. Then, a plurality of rollers 73 and holders 75 are provided between the outer race 71 and the inner race 72 attached to the seat member 57. Finally, the left crank arm 27b is attached to the crank shaft 51, and the right crank arm 27a is fixedly attached to the crank shaft 51 in a press fitting manner or by adhesion, and the left crank arm 27b is fixed by a shaft bolt. To the crankshaft 51.

When the bottom bracket assembly 53 is combined as described above, the rollers 73 are slidable relative to the outer race, and thus, the rotational axis C1 of the crankshaft 51 is automatically aligned.

Second embodiment

The configuration of the bicycle according to the second embodiment is substantially equivalent to the first implementation The configuration of the bicycle of the example is in addition to the configuration of the rear hub assembly 29.

For this reason, in the second embodiment, the rear hub assembly 29 will be described, and the explanation of other configurations will be omitted. The configuration omitted here conforms to the configuration of the first embodiment.

As shown in FIG. 1, the rear hub assembly 29 is supported on the rear member of the frame 11. As shown in FIG. 4, the rear hub assembly 29 primarily includes a rear hub axle 61, a rear hub shell 63, a sprocket mounting member 65, and a plurality of bearing assemblies 150 (eg, two bearing assemblies 150).

The explanation of the rear hub axle 61 and the rear hub shell 63 is omitted because the configurations of the rear hub axle 61 and the rear hub shell 63 have substantially the same configuration as those of the first embodiment.

As shown in FIG. 4, a sprocket mounting member 65 is provided to attach the rear sprocket assembly 36 to the rear hub shell 63. The sprocket mounting member 65 is attached to the rear hub shell 63 such that the pedaling torque can be transmitted from the sprocket mounting member 65 to the rear hub shell 63. The sprocket mounting member 65 is rotatable relative to the rear hub axle 61 via a conventional ball bearing 58 and two bearing assemblies 150. The sprocket mounting member 65 rotates integrally with the rear hub shell 63. The rear sprocket assembly 36 is mounted to the sprocket mounting member 65.

Each of the two bearing assemblies 150 includes a seat member 57 and a bearing 59. The configuration of the seat member 57 and the bearing 59 of the bearing assembly 150 has a configuration substantially the same as that of the first embodiment except for the article member in which the bearing assembly 150 is mounted. For this reason, with reference to Fig. 5, these configurations are briefly explained with the same component symbols as those of the first embodiment.

The seat member 57 is made of a non-metallic material. For example, the seat member 57 is composed of Made of synthetic resin. The seat member 57 is constructed to be positioned between the bearing 59 and the rear hub axle 61. For example, the seat member 57 is constructed to be positioned between the inner race 72 of the bearing 59 and the rear hub axle 61. The seat member 57 can be omitted as needed.

Specifically, the seat member 57 is mounted on the rear hub axle 61. The seat member 57 includes a second mounting portion 57a, a cover portion 57b, and a joint portion 57c.

The second mounting portion 57a is mounted on the outer peripheral portion of the rear hub axle 61. The cover portion 57b is integrally formed with the second mounting portion 57a.

The joint portion 57c is formed in a concave shape and extends in the circumferential direction of the first mounting portion 55a. The inner race 72 of the bearing 59 is disposed on the joint portion 57c. For example, one of the pair of side walls 57d of the engaging portion 57c elastically engages the inner race 72 of the bearing 59.

Bearings 59 are provided between the sprocket mounting member 65 and the rear hub axle 61 and between the rear hub shell 63 and the rear hub axle 61, respectively. Specifically, the bearings 59 are disposed between the sprocket mounting member 65 and the seat member 57 and between the rear hub shell 63 and the seat member 57, respectively. The bearing 59 is a tapered roller bearing.

The bearing 59 includes an outer race 71, an inner race 72, a retaining member 75, and a plurality of rollers 73. The configuration of the outer race 71, the inner race 72, the retaining member 75, and the plurality of rollers 73 has a configuration substantially the same as that of the first embodiment except for the article member in which the bearing assembly 150 is mounted. For this reason, these configurations are briefly explained with reference to FIG. 5.

The outer race 71 is constructed to be mounted to the sprocket mounting member 65 and Rear hub shell 63. For example, the outer race 71 is a cup-shaped outer race. The outer race 71 is attached to the inner peripheral portion of the sprocket mounting member 65 and the rear hub shell 63, respectively.

Specifically, the outer race 71 is press-fitted to the inner peripheral portion of the sprocket mounting member 65 and the rear hub shell 63, respectively. The outer race 71 is adjacent to the step portions 65a, 63a of the sprocket mounting member 65 and the rear hub shell 63, respectively, in the direction in which the rear hub axle 61 extends.

The outer race 71 has a first axially curved contact surface 71a with respect to the central axis of rotation R of the roller 73. The first axially curved contact surface 71a is constructed to form an axially curved outer surface 73a of the contact roller 73. For example, the first axially curved contact surface 71a is curved in an arc shape.

The inner race 72 is constructed to be mounted to the rear hub axle 61. For example, the inner race 72 is attached to the outer peripheral portion of the rear hub axle 61 via the seat member 57. Specifically, the inner race 72 is a tapered inner race. The inner race 72 is disposed on the joint portion 57c of the seat member 57 as described above.

The inner race 72 has a second axially curved contact surface 72a with respect to the central axis of rotation R of the roller 73. The second axially curved contact surface 72a is constructed to form an axially curved outer surface 73a of the contact roller 73. For example, the second axially curved contact surface 72a is curved into an arc shape.

The holder 75 is disposed between the outer race 71 and the inner race 72. The holder 75 is substantially formed in a ring shape. A plurality of openings 75a of the holder 75 are formed at a predetermined pitch in the peripheral direction. A plurality of rollers 73 are rotatably disposed and held in the opening 75a, respectively.

A plurality of rollers 73 are disposed on the outer race 71 and the inner race 72 between. For example, the roller 73 is formed in a barrel shape. The plurality of rollers 73 are held between the outer race 71 and the inner race 72 by the holder 75 in a state in which the plurality of rollers 73 are respectively disposed in the opening 75a of the holder 75.

Each of the rollers 73 has an axially curved outer surface 73a with respect to the central axis of rotation R. For example, the axially curved outer surface 73a is curved relative to the central axis of rotation R of the roller 73. The axially curved outer surface 73a is curved into an arc shape. The axially curved outer surface 73a contacts the first axially curved contact surface 71a of the outer race 71.

Each of the rollers 73 is displaceable relative to the outer race 71 in the axial direction along the central axis of rotation R. Specifically, each of the rollers 73 is slidable in the axial direction with respect to the first axial curved contact surface 71a of the outer race 71.

The rotation central axis R is inclined at a predetermined angle with respect to the rotation axis C2 of the rear hub axle 61. For example, the rotation central axis R leaves the rotation axis C2 of the rear hub axle 61 in the radial direction, and has an increased distance from the central portion of the rear hub axle 61 in the axial direction.

In the above-described rear hub assembly 29, first, the outer race 71 is attached to the sprocket mounting member 65 and the rear hub shell 63, respectively. Then, a plurality of rollers 73 are attached to the holder 75. Then, a plurality of rollers 73 and holders 75 are provided between the outer race 71 and the inner race 72 attached to the seat member 57.

Finally, when the lever of the wheel securing mechanism 45 is operated, the rear hub axle 61 is retained by the wheel securing mechanism 45 on the rear member of the frame 11.

When the rear hub assembly 29 is combined as described above, the rollers 73 It is slidable relative to the outer race, and therefore, the axis of rotation C2 of the hub axle 61 is automatically aligned.

Third embodiment

The configuration of the bicycle according to the third embodiment is substantially identical to the configuration of the bicycle of the first embodiment except for the configuration of the front hub assembly 29.

For this reason, in the third embodiment, the front hub assembly 29 will be described, and the explanation of other configurations will be omitted. The configuration omitted here conforms to the configuration of the first embodiment.

As shown in Figure 1, the front hub assembly 15 is supported on the front fork 11b. As shown in FIG. 6, the front hub assembly 15 primarily has a front hub axle 41, a front hub shell 43, and a plurality of bearing assemblies 250 (eg, two bearing assemblies 250).

The explanation of the front hub axle 41 and the front hub shell 43 is omitted because the configuration of the front hub axle 41 and the front hub shell 43 has substantially the same configuration as the first embodiment.

As shown in FIG. 6, each of the two bearing assemblies 250 includes a seat member 57 and a bearing 59. The configuration of the seat member 57 and the bearing 59 of the bearing assembly 250 has a configuration substantially the same as that of the first embodiment except for the article member in which the bearing assembly 250 is mounted. For this reason, these configurations are briefly explained with reference to FIG. 5.

The seat member 57 is made of a non-metallic material. For example, the seat member 57 is made of synthetic resin. The seat member 57 is constructed to be positioned between the bearing 59 and the front hub axle 41. For example, the seat member 57 is constructed to be positioned on the shaft The inner race 72 of the bearing 59 is between the front hub axle 41 and the front hub axle 41. The seat member 57 can be omitted as needed.

Specifically, the seat member 57 is mounted on the front hub axle 41. The seat member 57 includes a second mounting portion 57a, a cover portion 57b, and a joint portion 57c. The inner peripheral portion of the second mounting portion 57a is mounted on the outer peripheral portion of the front hub axle 41.

The cover portion 57b is integrally formed with the second mounting portion 57a.

The joint portion 57c is formed in a concave shape and extends in the circumferential direction of the first mounting portion 55a. The inner race 72 of the bearing 59 is disposed on the joint portion 57c. For example, one of the pair of side walls 57d of the engaging portion 57c elastically engages the inner race 72 of the bearing 59.

A bearing 59 is disposed between the front hub shell 43 and the front hub axle 41. Specifically, the bearing 59 is disposed between the front hub shell 43 and the seat member 57. The bearing 59 is a tapered roller bearing.

The bearing 59 includes an outer race 71, an inner race 72, a retaining member 75, and a plurality of rollers 73. The configuration of the outer race 71, the inner race 72, the retaining member 75, and the plurality of rollers 73 has substantially the same configuration as the first embodiment except for the article member in which the bearing assembly 250 is mounted. For this reason, these configurations are briefly explained with reference to FIG. 5.

The outer race 71 is constructed to be mounted to the front hub shell 43. For example, the outer race 71 is a cup-shaped outer race 71. The outer race 71 is attached to the inner peripheral portion of the front hub shell 43.

Specifically, the outer race 71 is press-fitted to the inner peripheral portion of the front hub shell 43. The outer race 71 abuts the front wheel in a direction in which the front hub axle 41 extends The step portion 43a of the hub shell 43 is on.

The outer race 71 has a first axially curved contact surface 71a with respect to the central axis of rotation R of the roller 73. The first axially curved contact surface 71a is constructed to form an axially curved outer surface 73a of the contact roller 73. For example, the first axially curved contact surface 71a is curved in an arc shape.

The inner race 72 is constructed to be mounted to the front hub axle 41. For example, the inner race 72 is attached to the outer peripheral portion of the front hub axle 41 via the seat member 57. Specifically, the inner race 72 is a tapered inner race 72. The inner race 72 is disposed on the joint portion 57c of the seat member 57 as described above.

The inner race 72 has a second axially curved contact surface 72a with respect to the central axis of rotation R of the roller 73. The second axially curved contact surface 72a is constructed to form an axially curved outer surface 73a of the contact roller 73. For example, the second axially curved contact surface 72a is curved into an arc shape.

The holder 75 is disposed between the outer race 71 and the inner race 72. The holder 75 is substantially formed in a ring shape. A plurality of openings 75a of the holder 75 are formed at a predetermined pitch in the peripheral direction. A plurality of rollers 73 are rotatably disposed and held in the opening 75a, respectively.

A plurality of rollers 73 are disposed between the outer race 71 and the inner race 72. For example, the roller 73 is formed in a barrel shape. The plurality of rollers 73 are held between the outer race 71 and the inner race 72 by the holder 75 in a state in which the plurality of rollers 73 are respectively disposed in the opening 75a of the holder 75.

Each of the rollers 73 has an axially curved outer surface 73a with respect to the central axis of rotation R. For example, the axially curved outer surface 73a is curved relative to the central axis of rotation R of the roller 73. The axially curved outer surface 73a is bent into arc. The axially curved outer surface 73a contacts the first axially curved contact surface 71a of the outer race 71.

Each of the rollers 73 is displaceable relative to the outer race 71 in the axial direction along the central axis of rotation R. Specifically, each of the rollers 73 is slidable in the axial direction with respect to the first axial curved contact surface 71a of the outer race 71.

The rotation central axis R is inclined at a predetermined angle with respect to the rotation axis C3 of the front hub axle 41. For example, the rotation central axis R leaves the rotation axis C3 of the front hub axle 41 in the radial direction, and has an increased distance from the central portion of the front hub axle 41 in the axial direction.

In the above-described front hub assembly 15, first, the outer race 71 is attached to the front hub shell 43. Then, a plurality of rollers 73 are attached to the holder 75. Then, a plurality of rollers 73 and holders 75 are provided between the outer race 71 and the inner race 72 attached to the seat member 57.

Finally, when the lever of the wheel securing mechanism 45 is operated, the front hub axle 41 is held by the wheel securing mechanism 45 on the front part of the frame 11.

When the current hub assembly 15 is combined as described above, the rollers 73 can slide relative to the outer race, and thus the axis of rotation C2 of the hub axle 61 is automatically aligned.

Fourth embodiment

The configuration of the bicycle according to the fourth embodiment is substantially identical to the configuration of the bicycle of the first embodiment except for the configuration of the head unit assembly 24.

For this reason, in the fourth embodiment, the head unit assembly will be described. 24, and the explanation of other configurations will be omitted. The configuration omitted here conforms to the configuration of the first and second embodiments.

As shown in Figures 1 and 7, the head unit assembly 24 is provided to connect the head tube 11c of the frame 11 and the steering column 11d of the front fork 11b. The handle stem 13a of the handle 13 is fixed to the steering column 11d and rotates integrally with the steering column 11d. The head pipe 11c is rotated relative to the steering column 11d via a bearing assembly 350.

Bearing assembly 350 includes adapter member 55 and bearing 59. Preferably, the bearing assembly 350 further includes a seat member 57. The bearing assembly 350 including the seat member 57 is explained as an example as shown in FIG.

The configuration of the adapter member 55, the seat member 57, and the bearing 59 has a configuration substantially the same as that of the first embodiment except for the article member in which the bearing assembly 350 is mounted. For this reason, these configurations are briefly explained with reference to FIG.

The adapter member 55 is constructed to be mounted to the head pipe 11c. The adapter member 55 includes a smaller diameter portion 55a and a larger diameter portion 55b. The smaller diameter portion 55a is mounted on the head pipe 11c by screwing the male screw portion 55c of the smaller diameter portion 55a to the female screw portion 12a of the head pipe 11c.

The larger diameter portion 55b is integrally formed with the smaller diameter portion 55a. The larger diameter portion 55b abuts the end portion 11e of the head pipe 11c in the axial direction extending parallel to the head pipe 11c of the rotation axis C4 of the head pipe 11c.

The seat member 57 is made of a non-metallic material. For example, the seat member 57 is composed of Made of synthetic resin. The seat member 57 is constructed to be positioned between the bearing 59 and the steering column 11d. For example, the seat member 57 is constructed to be positioned between the inner race 72 of the bearing 59 and the steering column 11d.

Specifically, the seat member 57 is mounted on the steering column 11d. The seat member 57 includes a second mounting portion 57a, a cover portion 57b, and a joint portion 57c. The inner peripheral portion of the second mounting portion 57a is mounted on the outer peripheral portion of the steering column 11d. The cover portion 57b is integrally formed with the second mounting portion 57a.

The engaging portion 57c is formed in a concave shape and extends in the circumferential direction of the smaller diameter portion 55a. The inner race 72 of the bearing 59 is disposed on the joint portion 57c. For example, one of the pair of side walls 57d of the engaging portion 57c elastically engages the inner race 72 of the bearing 59.

A bearing 59 is provided between the adapter member 55 and the seat member 57. The bearing 59 is a tapered roller bearing. The bearing 59 includes an outer race 71, an inner race 72, a retaining member 75, and a plurality of rollers 73.

The outer race 71 is constructed to be mounted to the adapter member 55. For example, the outer race 71 is a cup-shaped outer race 71. The outer race 71 is mounted to the inner peripheral portion of the adapter member 55.

The outer race 71 has a first axially curved contact surface 71a with respect to the central axis of rotation R of the roller 73. The first axially curved contact surface 71a is constructed to form an axially curved outer surface 73a of the contact roller 73. For example, the first axially curved contact surface 71a is curved in an arc shape.

The inner race 72 is constructed to be mounted to the steering column 11d. For example, the inner race 72 is attached to the outer peripheral portion of the steering column 11d via the seat member 57. Minute. Specifically, the inner race 72 is a tapered inner race 72. The inner race 72 is disposed on the joint portion 57c of the seat member 57 as described above.

The inner race 72 has a second axially curved contact surface 72a with respect to the central axis of rotation R of the roller 73. The second axially curved contact surface 72a is constructed to form an axially curved outer surface 73a of the contact roller 73. For example, the second axially curved contact surface 72a is curved into an arc shape.

The holder 75 is disposed between the outer race 71 and the inner race 72. The holder 75 is substantially formed in a ring shape. A plurality of openings 75a of the holder 75 are formed at a predetermined pitch in the peripheral direction. A plurality of rollers 73 are rotatably disposed and held in the opening 75a, respectively.

A plurality of rollers 73 are disposed between the outer race 71 and the inner race 72. For example, the roller 73 is formed in a barrel shape. The plurality of rollers 73 are held between the outer race 71 and the inner race 72 by the holder 75 in a state in which the plurality of rollers 73 are respectively disposed in the opening 75a of the holder 75.

Each of the rollers 73 has an axially curved outer surface 73a with respect to the central axis of rotation R. For example, the axially curved outer surface 73a is curved relative to the central axis of rotation R of the roller 73. The axially curved outer surface 73a contacts the first axially curved contact surface 71a of the outer race 71.

Each of the rollers 73 is displaceable relative to the outer race 71 in the axial direction along the central axis of rotation R. Specifically, each of the rollers 73 is slidable in the axial direction with respect to the first axial curved contact surface 71a of the outer race 71.

The rotation central axis R is inclined at a predetermined angle with respect to the rotation axis C4 of the steering column 11d. For example, the central axis of rotation R is away from the radial direction The rotation axis C4 of the steering column 11d is opened, and has an increased distance from the central portion of the head pipe 11c toward the end portion of the steering column 11d in the axial direction.

In the above-described head unit assembly 24, first, the adapter member 55 is attached to the steering column 11d. Next, the outer race 71 is mounted to the adapter member 55. Alternatively, the outer race 71 can be previously mounted to the adapter member 55 before the adapter member 55 is mounted to the steering column 11d. Then, a plurality of rollers 73 are attached to the holder 75. Then, a plurality of rollers 73 and holders 75 are provided between the outer race 71 and the inner race 72 attached to the seat member 57. Finally, a rock bolt 68 is screwed to the end portion of the steering column 11d. Therefore, the head unit assembly 24 is mounted between the head pipe 11c and the steering column 11d.

When the head unit assembly 24 is assembled as described above, the rollers 73 are slidable relative to the outer race, and thus, the rotational axis C4 of the steering column 11d is automatically aligned.

Other embodiments

(a) In the first to fourth embodiments, an example of the case where the present invention is applied to a road type bicycle has been described. Instead, the present invention can be applied to mountain bikes and/or city cycles, and the like.

(b) In the first to fourth embodiments, an example in which the roller 73 is formed into a barrel shape has been described. Instead, the roller 73 can be formed into a narrow drum shape in the middle. In this case, the axial bending of the outer race 71 and the inner race 72 is compared with the first to fourth embodiments. The contact surface is curved in an arc in a counter radial direction.

(c) In the fourth embodiment, an example of a case in which the head unit assembly 24 is applied to the upper side of the head pipe 11c has been described. This head unit assembly 24 can be applied to the underside of the head pipe 11c.

11c‧‧‧ head tube

11d‧‧‧steering machine column

11e‧‧‧ end section

12‧‧‧Bottom bracket suspension

12a‧‧‧ mother screw part

12b‧‧‧ side part

51‧‧‧ crankshaft

53‧‧‧Bottom bracket assembly

55‧‧‧Adapter components

55a‧‧‧Small diameter section

55b‧‧‧large diameter section

55c‧‧‧ Male screw section

57‧‧‧seat components

57a‧‧‧Second installation

57b‧‧‧ Cover part

57c‧‧‧ joint part

57d‧‧‧ side wall

59‧‧‧ bearing

71‧‧‧Outer seat

71a‧‧‧First axially curved contact surface

72‧‧‧ inner seat

72a‧‧‧Second axial bending contact surface

73‧‧‧Roller

73a‧‧‧Axially curved outer surface

75‧‧‧ Holder

75a‧‧‧ openings

350‧‧‧ bearing assembly

C1‧‧‧Rotation axis

C4‧‧‧Rotation axis

R‧‧‧Rotating central axis

Claims (24)

A bicycle bottom bracket assembly comprising: an adapter member constructed to be mounted to a bottom bracket suspension of a bicycle frame; an outer race constructed to be mounted to the adapter member; an inner seat a ring that is constructed to be mounted to the crankshaft; and a plurality of rollers disposed between the outer race and the inner race, each of the rollers having a central axis of rotation, the rollers Each of the sub-holders has an axially curved outer surface relative to the central axis of rotation of the roller; the outer race has a first axially curved contact surface with respect to the central axis of rotation of the roller, the first An axially curved contact surface is constructed to contact the axially curved outer surface of each of the rollers. The bicycle bottom bracket assembly of claim 1, wherein the inner race has a second axially curved contact surface with respect to the central axis of rotation of the roller, the second axially curved contact surface The axially curved outer surface is constructed to contact each of the rollers. The bicycle bottom bracket assembly of claim 1, further comprising: a seat member made of a non-metallic material and constructed to be positioned on the inner race and the bicycle crank assembly. Between the axes. The bicycle bottom bracket assembly of claim 2, wherein the outer race is a cup outer race; The inner race is a tapered inner race. A bicycle bottom bracket assembly comprising: an adapter member constructed to be mounted to a bottom bracket suspension of a bicycle frame; an outer race constructed to be mounted to the adapter member; an inner seat a ring that is constructed to be mounted to the crankshaft; and a plurality of rollers disposed between the outer race and the inner race, each of the rollers having a central axis of rotation; wherein The roller is displaceable relative to the outer race in an axial direction along the central axis of rotation. The bicycle bottom bracket assembly of claim 5, wherein the outer race is a cup-shaped outer race; and the inner race is a tapered inner race. A bicycle bottom bracket assembly according to claim 5, further comprising: a seat member made of a non-metallic material and constructed to be positioned on the inner race and the bicycle crank assembly. Between the axes. A bicycle hub assembly comprising: a hub axle; a hub shell constructed to be rotatably mounted to the hub axle; a first outer race constructed to be mounted to the hub shell; the first inner seat a ring that is constructed to be mounted to the hub axle; and a plurality of first rollers disposed on the first outer race and the first Between the inner races, each of the first rollers has a first central axis of rotation, each of the first rollers having a first central axis of rotation relative to the first roller An axially curved outer surface; the outer race having a first axially curved contact surface relative to the first central axis of rotation of the first roller, the first axially curved contact surface being configured to contact the first The first axially curved outer surfaces of each of the rollers. The bicycle hub assembly of claim 8 wherein the first inner race has a second axially curved contact surface relative to the first central axis of rotation of the first roller, the second shaft The curved contact surface is configured to contact the first axially curved outer surface of each of the first rollers. The bicycle hub assembly of claim 8 further comprising: a first seat member made of a non-metallic material and constructed to be positioned between the first inner race and the hub axle . The bicycle hub assembly of claim 8, wherein the first outer race is a cup outer race; and the first inner race is a tapered inner race. The bicycle hub assembly according to claim 8 of the patent application, further comprising: a sprocket mounting member; a second outer race constructed to be mounted to the sprocket mounting member; a second inner race constructed to be mounted to the hub axle; and a plurality of second rollers disposed on the first outer race Between the second outer race and the second inner race, each of the second rollers has a second central axis of rotation, each of the second rollers having a second roller relative to the second roller a second axially curved outer surface of the second central axis of rotation; the second outer race has a third axially curved contact surface with respect to the second central axis of rotation of the second roller, the third axial direction The curved contact surface is configured to contact the second axially curved outer surface of each of the second rollers. The bicycle hub assembly of claim 12, wherein the second inner race has a fourth axially curved contact surface with respect to the second central axis of rotation of the second roller, the fourth shaft The curved contact surface is configured to contact the second axially curved outer surface of each of the second rollers. The bicycle hub assembly according to claim 12, further comprising: a second seat member made of a non-metallic material and constructed to be positioned between the second inner race and the hub axle . The bicycle hub assembly of claim 12, wherein the second outer race is a cup outer race; and the second inner race is a tapered inner race. A bicycle hub assembly comprising: a hub axle; a hub shell constructed to be rotatably mounted to the hub axle; a first outer race constructed to be mounted to the hub shell; the first inner seat a ring that is constructed to be mounted to the hub axle; and a plurality of first rollers disposed between the first outer race and the first inner race, each of the first rollers The person has a central axis of rotation; the first rollers are displaceable relative to the first outer race in an axial direction along the central axis of rotation. The bicycle hub assembly of claim 16, wherein the first outer race is a cup outer race; and the first inner race is a tapered inner race. The bicycle hub assembly of claim 16, further comprising: a first seat member made of a non-metallic material and constructed to be positioned between the first inner race and the hub axle . The bicycle hub assembly according to claim 16, further comprising: a sprocket mounting member; a second outer race constructed to be mounted to the sprocket mounting member; and a second inner race, which is Constructed to the hub axle; and a plurality of second rollers disposed between the second outer race and the second inner race, each of the second rollers having a center of rotation Axis The second rollers are displaceable relative to the second outer race in an axial direction along the central axis of rotation. The bicycle hub assembly of claim 19, wherein the second outer race is a cup outer race; and the second inner race is a tapered inner race. The bicycle hub assembly according to claim 19, further comprising: a second seat member made of a non-metallic material and constructed to be positioned between the second inner race and the hub axle . A bicycle head component assembly comprising: an outer race; an inner race; and a plurality of rollers disposed between the outer race and the inner race, each of the rollers having a center of rotation An axis, each of the rollers having an axially curved outer surface relative to the central axis of rotation of the roller; the outer race having a first axially curved contact relative to the central axis of rotation of the roller The surface, the first axially curved contact surface is configured to contact the axially curved outer surface of each of the rollers. A bicycle head component assembly according to claim 22, wherein the inner race has a second axially curved contact surface with respect to the central axis of rotation of the roller, the second axially curved contact surface being Construction The axially curved outer surface of each of the rollers is touched. The bicycle head component assembly of claim 22, wherein the outer race is a cup outer race; and the inner race is a tapered inner race.