CN2590758Y

CN2590758Y - Internal-moment type rear hub

Info

Publication number: CN2590758Y
Application number: CN 02294474
Authority: CN
Inventors: 陈浚钦
Original assignee: Kun Teng Industry Co Ltd
Current assignee: Kun Teng Industry Co Ltd
Priority date: 2002-12-31
Filing date: 2002-12-31
Publication date: 2003-12-10
Anticipated expiration: 2012-12-31

Abstract

The utility model relates to an internal-moment type rear hub which comprises a spindle, a plurality of first bearings sheathed on the spindle, a housing body sheathed on the first bearings, a gear seat connected with one end of the housing body by a clutch unit, at least one second bearing nested between the inner ring side of the gear seat and the spindle, two limiting units arranged and positioned at both ends of the spindle, wherein, the clutch unit is provided with a thorn toothed ring fixed in the housing body in a thread mode, a ring sleeve which is sheathed at the inner part of the thorn toothed ring on a same axial cord and is fixed to the gear seat, a plurality of detents installed at the peripheral side of the ring sleeve, and elastic components connected with the detents. The utility model relates to an internal-moment type rear hub which comprises a spindle, a plurality of first bearings sheathed on the spindle, a housing body sheathed on the first bearings, a gear seat connected with one end of the housing body by a clutch unit, at least one second bearing nested between the inner ring side of the gear seat and the spindle, two limiting units arranged and positioned at both ends of the spindle, wherein, the clutch unit is provided with a thorn toothed ring fixed in the housing body in a thread mode, a ring sleeve which is sheathed at the inner part of the thorn toothed ring on a same axial cord and is fixed to the gear seat, a plurality of detents installed at the peripheral side of the ring sleeve, elastic components connected with the detents, and a self lubricating bearing. The self lubricating bearing is sheathed between the spindle and the ring sleeve. Thereby, the arrangement of the self lubricating bearing can cause the clutch unit to be stably connected between the gear seat and the housing body, and the clutch unit is stably supported by the spindle.

Description

Flower hub after the internal moment formula

[technical field]

The utility model relates to a kind of colored hub of bicycle, particularly relates to flower hub after a kind of internal moment formula.

[background technology]

Existing back flower hub, mostly be that a clutch unit is installed in a pinion stand inside, that is to say that clutch unit is the floral disc external side end that is positioned at colored hub, this design is because be subjected to the destruction of friction stress and torsion easily, so can't be applicable on the mountain-climbing car that need bear than high pulling torque, the cross-country car.Therefore, existing a kind of in recent years colored hub that bears than high pulling torque is developed (being commonly referred to as internal moment formula flower hub).

As shown in Figure 1, be existing a kind of internal moment formula flower hub, this flower hub includes an axle 1, one utilizes number clutch shaft bearing 201 to be the housing 2 that is rotatably supported by this axle 1, one utilizes a clutch unit 4 to be attached at the pinion stand 3 of these housing 2 one ends, number is nested in second bearing 5 between these pinion stand 3 one inner ring surfaces and axle 1 outer peripheral face, one to be set in axle 1 outside and can make adjacent first, two

bearings

201,5 axis direction obtains the spacer sleeve 6 of location and two installings are positioned at these axle 1 two ends and make housing 2 produce spacing position-limiting unit 7 with respect to the axis of axle 1.This clutch unit 4 has one and is installed in pallet 402 and that housing 2 in-to-in ratchet rings 401, number are installed in these pinion stand 3 one end outer peripheral faces and can makes 402 permanent maintenances of these pallets produce the elastic parts 403 that Nie close with ratchet ring 401, utilizes this clutch unit 4 can make pinion stand 3 unidirectional interlock housings 2.

For being driven, pinion stand 3 can not produce frictional interference when housing 2 rotates with respect to axle 1, so between pinion stand 3 one inner ring surfaces and spacer sleeve 6 one outer peripheral faces, just must reserve a gap I.When the fluted disc that is embedded on the pinion stand 3 (figure does not show) is driven and is subjected to moment loading, this gap I causes pinion stand 3 and clutch unit 4 to produce moving partially principal element with respect to axis, and can cause partly pallet 402 stably Nie be combined on the ratchet ring 401, even pallet 402 is produced beat.

[utility model content]

The purpose of this utility model is to provide a kind of and produces moving partially with respect to the housing axis when preventing that pinion stand from being driven and can guarantee that housing produces colored hub after the internal moment formula of smooth and easy rotation.

The utility model is spent hub after a kind of internal moment formula is provided, include an axle, be set in several clutch shaft bearings on the axle and be sheathed on housing on this clutch shaft bearing, one is attached at the pinion stand of this housing one end by a clutch unit, at least one second bearing and two that is nested between this pinion stand one inner ring surface and the axle is installed the position-limiting unit that is positioned at these axle two ends, this clutch unit has the solid ratchet ring in enclosure interior of a spiral shell, one coaxial line is set in the inner and ring set affixed with pinion stand of ratchet ring, several pallets and that are installed in this ring set one outer peripheral face are attached at the elastic parts on this pallet, it is characterized in that:

This back flower hub more includes a self lubricating bearing, and this self lubricating bearing is to be set between this axle and this ring set, and has one and be linked in interior sliding surface and on this axle with this interior opposing setting of sliding surface and be linked in outer sliding surface on this ring set one inner ring surface.Whereby, utilize the setting of self lubricating bearing that clutch unit stably is attached between pinion stand and the housing.

Flower hub after the described internal moment formula is characterized in that: this self lubricating bearing have more one be engaged in location end face between sliding surface and the outer sliding surface side, this location end face is to only being on the shoulder in inner ring surface stage casing of step shape at this ring set.

Produce moving partially with respect to the housing axis when the utility model can prevent that pinion stand from being driven and can guarantee that housing produces smooth and easy rotation, can guarantee that clutch unit is stable to be attached between pinion stand and the housing, and can reach preferable interlock cooperation,

[description of drawings]

Below by most preferred embodiment and accompanying drawing to internal moment formula of the present utility model after the flower hub be elaborated, in the accompanying drawing:

Fig. 1 is the assembled sectional view of flower hub after existing a kind of internal moment formula.

Fig. 2 is the combination section of the utility model first preferred embodiment.

Fig. 3 is the local enlarged diagram of the A portion of Fig. 2.

[specific embodiment]

As Fig. 2, shown in Figure 3, the preferred embodiment of flower hub includes an axle 10 after the utility model internal moment formula, be set in several clutch shaft bearings 21 on the axle and be the housing 20 that rotatably is sheathed on this clutch shaft bearing 21, one is attached at the pinion stand 30 of these housing 20 1 ends by a clutch unit 40, two are nested in second bearing 31 between this pinion stand 30 and the axle 10, two installings are positioned on this axle 10 and make housing 20 produce spacing position-limiting unit 50 and with respect to an axis of axle 10 and are set in self lubricating bearing 60 (Self-lubricating bearing) between axle 10 and the clutch unit 40.

The axle 10 of present embodiment is that to make class shaft-like, has two ends 11 and that are opposite setting between these ends 11 and to support portion 12 that should clutch unit 40.This support portion 12 has two respectively towards these ends 11 and respectively to ending spacing end face 121 between first and second bearing 21,31, and the spacing distance perseverance of first and second bearing 21,31 is maintained fixed.

This clutch unit 40 has that a spiral shell is solid to be set in the inner and ring set 42 that screw togather mutually with pinion stand 30 inner ring surfaces of ratchet ring 41, severally can to make 43 permanent maintenances of these pallets produce the elastic parts 44 that Nie close with ratchet ring 41 to the pallet 43 and of should ratchet ring 41 1 inner ring surfaces and being installed in these ring set 42 1 outer peripheral faces at housing 20 in-to-in ratchet rings 41, a coaxial line.This ring set 42 has one around axis and be the inner ring surface 421 of step shape, and these inner ring surface 421 stage casings are provided with a shoulder 422, and this inner ring surface 421 is with respect to this support portion 12.

This self lubricating bearing 60 is to be set between support portion 12 and the ring set 42, and have one be linked in interior sliding surface 61 on this support portion 12, one and should in sliding surface 61 opposing settings and be linked in outer sliding surface 62 and on these ring set 42 inner ring surfaces 421 be engaged in location end face 63 between sliding surface 61 and outer sliding surface 62 sides, this location end face 63 is to only on the shoulder of inner ring surface 421 422.

Utilize the setting of this self lubricating bearing 60, can make between ring set 42 and the support portion 12 does not have the gap fully, and this clutch unit 40 is stably supported by axle 10.When the fluted disc of pinion stand 30 1 ends institute build-in is driven, clutch unit 40 corresponding to the other end does not just have the possibility moving partially with respect to the axis generation of axle 10, and can guarantee that all pallets 43 all can keep stablizing Nie with ratchet ring 41 and close, and reach preferable interlock purpose.

Moreover, utilize the characteristic of self lubricating bearing 60, when pinion stand 30 drives ring set 42, pallet 43 and desires interlock housing 20, but all can keep preferable turn state between the inner ring surface 421 of ring set 42 and outer sliding surface 62, support portion 12 and the interior sliding surface 61, can prevent frictional interference.

Conclude above-mentionedly, flower hub after the internal moment formula of the present utility model has and can guarantee that clutch unit is stable and be attached between pinion stand and the housing, cooperates and can reach preferable interlock, can reach the application target of expection really.

Claims

1. spend hub after an internal moment formula, include an axle, be set in several clutch shaft bearings on the axle and be sheathed on housing on this clutch shaft bearing, one is attached at the pinion stand of this housing one end by a clutch unit, at least one second bearing and two that is nested between this pinion stand one inner ring surface and the axle is installed the position-limiting unit that is positioned at these axle two ends, this clutch unit has the solid ratchet ring in enclosure interior of a spiral shell, one coaxial line is set in the inner and ring set affixed with pinion stand of ratchet ring, several pallets and that are installed in this ring set one outer peripheral face are attached at the elastic parts on this pallet, it is characterized in that:

This back flower hub more includes a self lubricating bearing, and this self lubricating bearing is to be set between this axle and this ring set, and has one and be linked in interior sliding surface and on this axle with this interior opposing setting of sliding surface and be linked in outer sliding surface on this ring set one inner ring surface.

2. flower hub after the internal moment formula as claimed in claim 1, it is characterized in that: this self lubricating bearing have more one be engaged in location end face between sliding surface and the outer sliding surface side, this location end face is to only being on the shoulder in inner ring surface stage casing of step shape at this ring set.