CN203391555U

CN203391555U - Ratchet wheel barrel structure of bicycle spline hub

Info

Publication number: CN203391555U
Application number: CN201320394066.4U
Authority: CN
Inventors: 张幼基
Original assignee: Bitex Industrial Co Ltd
Current assignee: Bitex Industrial Co Ltd
Priority date: 2013-07-03
Filing date: 2013-07-03
Publication date: 2014-01-15
Anticipated expiration: 2023-07-03

Abstract

The utility model discloses a ratchet wheel barrel structure of a bicycle spline hub. The ratchet wheel barrel structure comprises a ratchet wheel barrel, a bearing and a locating toothed ring, wherein the ratchet wheel barrel is of a hollow structure; one end of the ratchet wheel barrel is a transmission end; a baffle edge, an accommodating part and a thread part are sequentially arranged from the transmission end inside the ratchet wheel barrel; the bearing is accommodated in the accommodating part; one end of the bearing leans against the baffle edge; the other end of the bearing is an opening end; the locating toothed ring is locked in the thread part and is abutted against the opening end of the bearing. The thread part is formed at the position, relative to the opening end of the bearing, of the ratchet wheel barrel; after the bearing is mounted and assembled, the locating toothed part is fixed at the thread part by the ratchet wheel barrel, the bearing is abutted against by the ratchet wheel barrel through the locating toothed ring, and the stable support is provided for the bearing.

Description

The ratchet barrel structure of bicycle hub

Technical field

The utility model relates to a kind of ratchet cylinder of bicycle hub, refers in particular to the structure of improvement ratchet cylinder, prevents bearing displacement in ratchet cylinder or the fixed sturcture of stress and deformation.

Background technology

Between the trailing wheel of bicycle and flywheel, all can group be provided with a flower hub, its trailing wheel that is mainly to provide bicycle is located also transmission by this and is made wheel rim rotation, flower hub one side is provided with the ratchet cylinder with flywheel assembly, between flower hub and ratchet cylinder, utilize ratchet structure to produce single direction rotation, to drive trailing wheel, advance, therefore, the design of hub axle bearing structure, has great impact for the smooth degree of bicycle transmission.

Common bicycle hub is as Taiwan patent announcement number No. M441577 " drive mechanism of flower-drum ", or as shown in Figure 1, it includes in a flower hub body 10, a sleeve 11, a neck bearing 12, and manages 13, one outer bearing 14 and a side cover 15, wherein: this flower hub body 10 is to be axially equipped with an axle 16; This sleeve 11 is the tubulars that are hollow, it is connected with this flower hub body 10 with a first end 111, and making this axle 16 wear this sleeve 11, this sleeve 11 connects the inside of this sleeve 11 in nearly this first end 111 places moulding one block edge 113 with the periphery of one second end 112 and the flywheel (not shown) group of bicycle; This neck bearing 12 is be slidedly arranged in this sleeve 11 and be sheathed on this axle 16, and leans in this block edge 113, and the other end is Wei Yi open end 121; In this, manage 13 and be also slidedly arranged in this sleeve 11 and be sheathed on this axle 16, the some of these neck bearing 12 open ends 121 is supported in one end simultaneously; This outer bearing 14 is located at interior nearly these the second end 112 places of this sleeve 11, and supports the other end of managing 13 in this; 15 screw locks of this side cover seal the second end 112 of this sleeve 11.

It should be noted that, in order to have living space, can allow this neck bearing 12 be fit into smoothly this sleeve 11, therefore these neck bearing 12 one end lean on this block edge 113, open end 121 is most can be provided support without any structure, so that when user's treadled cycle, can produce a stress to this neck bearing 12 via flywheel, when stress is excessive, very easily cause these neck bearing 12 slippages, crooked, reverse or damage, and then cause user's having some setbacks when driving bicycle.

Utility model content

Technical problem to be solved in the utility model is to provide a kind of ratchet barrel structure of bicycle hub, it is the structure by the ratchet cylinder of improvement bicycle hub, make in the situation that the bearing installation group not affecting in ratchet cylinder is established, can obtain the support of other structures, avoid bearing because of stressed improper slippage or damage.

For addressing the above problem, the utility model provides a kind of ratchet barrel structure of bicycle hub, comprises: a ratchet cylinder, and inside is hollow structure, its one end is a driving end, and this ratchet cylinder inside is sequentially provided with a block edge, a holding part and a threaded portion from this driving end; One bearing, is to be located in this holding part Nei， one end by being located at this block edge, and the other end is Wei Yi open end; And a location tooth ring, be to be locked in this threaded portion, and the open end of this bearing of contact.

Further, the ratchet barrel structure of described bicycle hub, more sets up pipe and an outer bearing in one, in this, pipe is arranged in this location tooth ring, and Gai Zhongguan one end is resisted against the other end of this bearing, this outer bearing is positioned at this ratchet cylinder, and abuts against the other end of pipe in this.

Further, described block edge is that the inner peripheral ，Gai threaded portion that takes shape in this ratchet cylinder is for taking shape in the negative thread of this ratchet cylinder inner peripheral.

The ratchet barrel structure of the bicycle hub that the utility model utilization provides, the effect that can obtain is: the moulding threaded portion, place, open end by this ratchet cylinder with respect to this bearing, ratchet cylinder is established after this bearing in installation group, locking location, Yu Gai threaded portion tooth ring, by this location tooth ring, this bearing of contact provides this bearing stable support.

Accompanying drawing explanation

Fig. 1 is the cutaway view of ordinary bicycle hub ratchet wheel cylinder.

Fig. 2 is the cutaway view of the utility model embodiment.

Fig. 3 is the sectional exploded view of the utility model embodiment.

Description of reference numerals

The 10th, flower hub body 11 is sleeves

The 111st, first end 112 is second ends

The 113rd, block edge

The 12nd, neck bearing 121Shi open end

The 13rd, middle pipe

The 14th, outer bearing

The 15th, side cover

The 16th, axle

The 20th, ratchet cylinder 21 is driving ends

The 22nd, block edge 23 is holding parts

24Shi threaded portion 25 is outer block edges

The 26th, outer holding part 27 is open slots

The 28th, middle pipe 29 is outer bearings

The 30th, bearing 31Shi open end

The 40th, location tooth ring

The specific embodiment

The preferred embodiment of the ratchet barrel structure of the utility model bicycle hub as shown in Figures 2 and 3, comprises: in a ratchet cylinder 20, a bearing 30, a location tooth ring 40,, manage 28 and one outer bearing 29, wherein:

Described ratchet cylinder 20 inside are hollow structure, its one end is a driving end 21, these ratchet cylinder 20 inside are sequentially a block edge 22, a holding part 23 and a threaded portion 24 from this driving end 21, this block edge 22 is sides that take shape in nearly this driving end 21 of inner peripheral of this ratchet cylinder 20, this threaded portion 24 is for taking shape in the negative thread of these ratchet cylinder 20 inner peripherals, the inner nearly other end of described ratchet cylinder 20 place is the outer block edge 25 of moulding one more, and outwards has an outer holding part 26 and an open slot 27;

Described bearing 30 is to be located in this holding part 23Nei， one end by being located at this block edge 22, and the other end is Wei Yi open end 31;

Described location tooth ring 40 is to be locked in this threaded portion 24, and contact this bearing 30 open end 31;

Described middle pipe 28 is arranged in this location tooth ring 40, and does not contact with this location tooth ring 40, and this Zhong Guan28 one end is resisted against this bearing 30 open end 31; And

Described outer bearing 29 is to be positioned at this ratchet cylinder 20, and abuts against the other end of managing 28 in this.

The above is the utility model embodiment primary member and configuration explanation thereof.Occupation mode and effect as for the utility model embodiment, please consulting again Fig. 2 coordinates shown in Fig. 3, this ratchet cylinder 20 is to be sequentially fit into after each part, this bearing 30 open end 31 is subject to this location tooth ring 40 to support packing, by this, even during when user's treadled cycle and to the interior generation stress of ratchet cylinder 20, still can make this bearing 30 keep stable and unshift, maintain the smooth degree of user when driving bicycle.

Claims

1. a ratchet barrel structure for bicycle hub, is characterized in that: comprising:

One ratchet cylinder, inner for hollow structure ，Qi one end is a driving end, this ratchet cylinder inside is sequentially provided with a block edge, a holding part and a threaded portion from this driving end;

One bearing, is to be located in this holding part Nei， one end by being located at this block edge, and the other end is Wei Yi open end; And

One location tooth ring, is to be locked in this threaded portion, and the open end of this bearing of contact.

2. the ratchet barrel structure of bicycle hub as claimed in claim 1, it is characterized in that: more set up pipe and an outer bearing in one, in this, pipe is arranged in this location tooth ring, and Gai Zhongguan one end is resisted against the other end of this bearing, this outer bearing is positioned at this ratchet cylinder, and abuts against the other end of pipe in this.

3. the ratchet barrel structure of bicycle hub as claimed in claim 1, is characterized in that: described block edge is that the inner peripheral ，Gai threaded portion that takes shape in this ratchet cylinder is for taking shape in the negative thread of this ratchet cylinder inner peripheral.