TW201315619A - Hub - Google Patents

Abstract

The present invention provides a hub, which comprises an axle unit, a shell, a sprocket seat and a clutch unit. The clutch unit comprises a positioning member fixed on the shell, a clutch member, a brake member fixed on the sprocket seat, and an elastic member configured between the positioning member and the clutch member. The positioning member and the clutch member may be engaged by the engagement of a plurality of first and second engaging portions. The sprocket seat drives the brake member to rotate toward a linking direction. The brake member may brake the clutch member to be engaged with the positioning member, and may be linked with the shell for rotation. The sprocket seat rotates relative to the shell. The clutch member may be converted from the engaged position to the disengaged position by the elastic force of the elastic member, such that the sprocket seat may become idle.

Description

Flower hub

The present invention relates to a bicycle component, and more particularly to a flower hub for a bicycle rear wheel.

The general bicycle rear wheel hub has a ratchet clutch structure (for example, the public number No. 201127660, the No. 201119887, the No. 201100293, the certificate No. M395596, etc.), that is, in the casing or the chain. One of the wheel seats is provided with a ratchet tooth, and the other is provided with a plurality of mounting holes for mounting a plurality of pawls and at least one elastic member providing the resilient elasticity of the jaws, although such hubs have been widely used. Application, but there are many components, manufacturing assembly troubles, high cost, and the noise during operation is large.

In addition, in the patent No. 494867, a screwing rod is used to drive a sleeve to be engaged or disengaged with respect to an inner tapered surface of the hub shell, so as to achieve the purpose of forward linkage and reverse idling, and A majority of balls and springs are used to create a resisting mechanism to provide positioning of the sleeve. Although the flower hub has a silent effect, the spring will be fatigued due to the use of the spring, so that the friction of the ball on the sleeve is reduced. If the spring is to be replaced, there is a lack of maintenance cost, and replacement, Repair is not easy.

Accordingly, it is an object of the present invention to provide a flower hub which is simple in construction, easy to assemble, and easy to maintain and which can extend the service life.

Thus, the flower hub of the present invention comprises a mandrel unit, a casing, a sprocket seat and a clutch unit. The spindle unit extends along an axis, the housing is rotatably supported by the spindle unit, and has a peripheral wall surrounding the axis, the peripheral wall having a connecting end and a fixing disposed at the connecting end a slot and a receiving slot disposed outside the fixing slot, the sprocket seat is rotatably axially disposed on the spindle unit and located on the side of the housing, and has a pair of interlocking portions that should accommodate the slot and a sprocket mounting portion disposed outside the linkage portion, the clutch unit is mounted between the housing and the gear base, and has a positioning member fixed to the fixing slot, and a positioning member disposed along the axis a clutch member on one side, a tilting member disposed on one side of the clutch member along the axis and fixed to the linking portion, and an elastic member disposed between the positioning member and the clutch member, the positioning member having a majority a first engaging portion having a plurality of second engaging portions engageable with the first engaging portions and a plurality of receiving portions opposite to the second engaging portions, the plurality of the corresponding members corresponding to the first engaging portions The sprocket seat drives the swaying member toward the swaying portion of the stern portion Rotating in the interlocking direction, the lifting portions are used to move the receiving portions, and the clutch member is operated from a remote position away from the positioning member to operate into a meshing position for engaging the positioning member and to interlock the housing Rotating, the sprocket seat rotates relative to the housing, and the elastic force of the elastic member can convert the clutch member from the engaged position to the remote position, and the sprocket seat is idling.

The utility model has the advantages that the sprocket seat can rotate the housing in the linking direction by using the setting of the clutch unit, and when the sprocket seat rotates relative to the housing, the sprocket seat is idling The clutch unit has the advantages of simple components, easy assembly and maintenance, convenient maintenance, and long service life.

The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments.

As shown in FIG. 1 , FIG. 2 and FIG. 3 , a preferred embodiment of the flower hub of the present invention comprises a spindle unit 10 , a housing 20 , a sprocket base 30 and a clutch unit 40 .

The spindle unit 10 has a shaft 11 extending along an axis L and a plurality of bearings 12 disposed on the shaft 11.

The housing 20 is rotatably supported by the spindle unit 10 and has a peripheral wall 22 surrounding the axis L and defining an inner bore 21. The peripheral wall 22 has a connecting end portion 23 and a The fixing groove 24 of the connecting end portion 23 and a receiving groove 25 disposed outside the fixing groove 24, the fixing groove 24 is defined by an inner annular surface 241 surrounding the axis L and an inner wall surface intersecting the inner annular surface 241 242 is defined as having an internal threaded portion 243.

The sprocket base 30 is rotatably axially disposed on the spindle unit 10 and located on the side of the housing 20, and has a pair of interlocking portions 31 that should accommodate the slots 25, and is disposed outside the linkage portion 31. a sprocket mounting portion 32 and a blocking portion 33 disposed between the linking portion 31 and the sprocket mounting portion 32. The linking portion 31 has a threaded portion 311 which is externally threaded, and the stopping portion 33 has a The stop surface 331 is vertically adjacent to the interlocking portion 31.

The clutch unit 40 is mounted between the housing 20 and the gear base 30, and has a positioning member 41 fixed to the fixing groove 24, and a clutch member 42 disposed on one side of the positioning member 41 along the axis L. A rocking member 43 disposed on the side of the clutch member 42 and fixed to the interlocking portion 31 along the axis L and an elastic member 44 disposed between the positioning member 41 and the clutch member 42.

The positioning member 41 has a first end surface 411, a plurality of first engaging portions 412 extending around the axis L and circumferentially protruding from the side end surface 411, and a first recessed hole 413 recessed from the side end surface 411. The first engaging portion 412 is unidirectionally helically shaped and is annularly disposed outside the first recessed hole 413.

Referring to FIG. 4 , the clutch member 42 has a first end surface 421 opposite to the side end surface 411 , a plurality of second engaging portions 422 disposed on the first end surface 421 , and a second recessed from the first end surface 421 . a recessed hole 423, a second end surface 424 opposite to the first end surface 421, and a plurality of receiving portions 425 opposite to the second engaging portions 422, and the second engaging portions 422 and the first engaging portions 412 are The reverse direction is also arranged in a unidirectional helical shape, and is unidirectionally engageable with the first engaging portion 412. The second recessed hole 423 is disposed opposite to the first recessed hole 413. The receiving portion 425 surrounds the axis. L and protruding in the circumferential direction on the second end surface 424, and each having a pair of first lower end 426 that should be the second end surface 424, and a first one between the second end surface 424 and the tilting member 43 A high end 427 and a first slope 428 extending obliquely from the first lower end 426 to the first high end 427.

Referring to FIG. 4, the swaying member 43 has an inner end surface 431 opposite to the second end surface 424, a plurality of urging portions 432 corresponding to the dam portions 425, and an internal thread and are screwed to the screw a locking portion 433 of the portion 311, the protruding portion 432 is disposed around the axis L and circumferentially arranged on the inner end surface 431, and each has a pair of second lower ends 434 of the inner end surface 431, one at a position a second high end 435 between the inner end surface 431 and the second end surface 424 and a second inclined surface portion 436 extending obliquely from the second low end 434 to the second high end 435, the first and second inclined surfaces 428, 436 is relative.

The elastic member 44 is a disc spring and is biased between the first and second recessed holes 413 and 423.

As shown in FIG. 3 and FIG. 4, when the sprocket seat 30 is driven to rotate in the interlocking direction (as indicated by the arrow), the swaying member 43 is rotated in the same direction, and the swaying portion is utilized. The second beveled portion 436 of the 432 is configured to move the first beveled portions 428 of the receiving portions 426 along the guiding of the second inclined portions 436 such that the first high ends The second low end 434 gradually climbs to the second high end 435, so that the clutch member 42 moves along the axis L and abuts against the positioning member 41. At this time, the first high end 427 cannot The second and second engaging portions 412, 422 are also engaged with each other when the engaging member 42 is engaged with the positioning member 41. The elastic member 44 is pressed between the positioning member 41 and the clutch member and has a rebound elastic force, and is located at a meshing position. When the sprocket seat 30 drives the tilting member 43 to rotate, the second portion is utilized. A high-end 427 embedded card is positioned at the second high-end 435 to drive the clutch member 42. The clutch member 42 utilizes the second engaging portion. The biting cooperation of the 422 and the first engaging portion 412 can also rotate the positioning member 41 together, so that the housing 20 can be rotated.

Conversely, when the sprocket seat 30 rotates relative to the housing 20, that is, when the sprocket seat 30 rotates in the reverse direction, or the sprocket seat 30 does not rotate, and the housing 20 continues to rotate in the interlocking direction, At this time, the second high ends 435 of the swaying member 43 gradually correspond to the first lower ends 426 of the clutch members 42 . The thrust of the clutch member 42 originally generated by the swaying member 43 along the axis L is eliminated. As shown in FIG. 5 and FIG. 6, the elastic member 44 can move the clutch member 42 toward the tilting member 43, and the first and second engaging portions 412 and 422 are no longer engaged. The clutch member 42 can be The occlusal position is converted into a distant position, and at this time, the sprocket seat 30 is in a state of being idling and silent.

Therefore, the arrangement of the clutch unit 40 can not only achieve the purpose of unidirectional interlocking and reverse idling, but also the components of the clutch unit 40 are simple, the assembly is easy, and the maintenance is quite convenient, and the elastic member 44 is convenient. It is not easy to produce elastic fatigue, and it has the effect of prolonging the service life.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent.

10. . . Mandrel unit

L. . . Axis

11. . . Shaft

12. . . Bearing

20. . . case

twenty one. . . Bore

twenty two. . . Zhou wall

twenty three. . . Link end

twenty four. . . Fixed slot

241. . . Inner annulus

242. . . Inner wall

243. . . Internal thread

25. . . Locating slot

30. . . Sprocket seat

31. . . Linkage department

311. . . Screw lock

32. . . Sprocket mounting

33. . . Stop

331. . . Face

40. . . Clutch unit

41. . . Positioning member

411. . . Side end face

412. . . First meshing portion

413. . . First recess

414. . . External thread

42. . . Clutch

421. . . First end face

422. . . Second meshing portion

423. . . Second recess

424. . . Second end face

425. . . Recipient

426. . . First low end

427. . . First high end

428. . . First bevel

43. . . Flip piece

431. . . Inner end face

432. . . Inclined department

433. . . Locking part

434. . . Second low end

435. . . Second high end

436. . . Second bevel

44. . . Elastic part

Figure 1 is a plan view of a preferred embodiment of the flower hub of the present invention;

Figure 2 is an exploded perspective view of the above preferred embodiment of the present invention;

Figure 3 is a sectional view showing a combination of the above preferred embodiment of the present invention;

4 is a schematic view of the operation of the preferred embodiment of the present invention, illustrating a swaying member swaying a clutch member toward a locating member and in a nip position;

Figure 5 is a cross-sectional view showing another combination of the above preferred embodiment of the present invention;

Figure 6 is a schematic view of another operation of the above preferred embodiment of the present invention, illustrating the use of the elastic force of an elastic member to move the clutch away from the positioning member and in a remote position.

10. . . Mandrel unit

L. . . Axis

11. . . Shaft

12. . . Bearing

20. . . case

twenty one. . . Bore

twenty two. . . Zhou wall

twenty three. . . Link end

twenty four. . . Fixed slot

243. . . Internal thread

25. . . Locating slot

30. . . Sprocket seat

31. . . Linkage department

311. . . Screw lock

32. . . Sprocket mounting

33. . . Stop

40. . . Clutch unit

41. . . Positioning member

411. . . Side end face

412. . . First meshing portion

413. . . First recess

414. . . External thread

42. . . Clutch

421. . . First end face

422. . . Second meshing portion

424. . . Second end face

425. . . Recipient

426. . . First low end

427. . . First high end

428. . . First bevel

43. . . Flip piece

431. . . Inner end face

432. . . Inclined department

433. . . Locking part

44. . . Elastic part

Claims (7)

A flower hub comprising: a mandrel unit extending along an axis; a housing rotatably supported by the mandrel unit and having a peripheral wall surrounding the axis, the peripheral wall having a connecting end, a setting a fixing groove at the connecting end portion and a receiving groove disposed outside the fixing groove; a sprocket seat rotatably axially disposed on the mandrel unit and located on one side of the housing, and having a pair a linkage portion of the slot and a sprocket mounting portion disposed outside the linkage portion; and a clutch unit mounted between the housing and the gear housing and having a positioning member fixed to the fixing slot a clutch member disposed on one side of the positioning member along the axis, a tilting member disposed on the side of the clutch member along the axis and fixed to the linking portion, and a positioning member disposed on the positioning member and the clutch member An elastic member having a plurality of first engaging portions, the clutch member having a plurality of second engaging portions engageable with the first engaging portions and a plurality of receiving portions opposite to the second engaging portions, The swaying member has a plurality of swaying corresponding to the receiving portions The sprocket seat drives the swaying member to rotate in a linking direction, and the urging portion is used to sway the shackles, so that the clutch member can be operated from a position away from the positioning member, and the positioning is performed. The engaging position of the engaging member is rotatable, and the sprocket seat is rotated relative to the housing. The elastic force of the elastic member can convert the clutch member from the engaged position to the remote position, and the sprocket seat is idling. The flower hub according to the first aspect of the invention, wherein the clutch member of the clutch unit further has a first end surface and a second end surface opposite to the first end surface, wherein the second engaging portion is disposed at the first An end surface, the receiving portion is disposed around the axis and circumferentially arranged on the second end surface, and each has a pair of first lower ends that should be the second end faces, and one of the second end faces and the tilting a first high end between the members and a first inclined surface extending obliquely from the first low end to the first high end, the swaying member further having an inner end surface opposite to the second end surface, the swaying portions Surrounding the axis and circumferentially protruding on the inner end surface, and each having a pair of second lower ends that should be inner end faces, a second high end between the inner end faces and the second end faces, and a The second low end extends obliquely to the second high-end second inclined surface portion, the first and second inclined surfaces are opposite and opposite, and the first high-end embedded card is positioned when the clutch member is engaged with the positioning member. At the second high end, the clutch is converted to a remote position, the same of the ram The second high end corresponds to the first low ends of the clutch member. The flower hub according to the second aspect of the invention, wherein the positioning member of the clutch unit further has a side end surface, and the first engaging portions are arranged around the axis and are circumferentially arranged on the side end surface, and The first engaging portion is disposed opposite to the first engaging portions and also has a one-way oblique tooth shape, and the first engaging portions are unidirectionally engaged with the second engaging portions. The flower hub according to claim 3, wherein the positioning member further has a first recessed hole recessed from the side end surface, and the clutch member further has a second recess recessed from the first end surface. a hole, the elastic member is a disc spring and is biased between the first and second recessed holes. The flower hub according to claim 1, wherein the sprocket seat further has a stopping portion disposed between the linking portion and the sprocket mounting portion, the blocking portion having a vertical adjacent to The linkage portion is provided for the swaying member to abut against the locating surface. The flower hub according to claim 5, wherein the linkage portion of the sprocket seat has a threaded portion that is externally threaded, and the cocking member has an internal thread and is screwed to the screw lock portion. Locking part. The flower hub according to claim 1, wherein the fixing groove of the housing is defined by an inner annular surface surrounding the axis and an inner wall surface intersecting the inner annular surface, the inner annular surface having An internal threaded portion, the positioning member of the clutch unit has an external threaded portion screwed to the internal threaded portion.