CN2177614Y

CN2177614Y - Five-centre through axle structure for bicycle

Info

Publication number: CN2177614Y
Application number: CN 93237769
Authority: CN
Inventors: 陈坤灿
Original assignee: Jieante Bicycle (china) Co Ltd
Current assignee: Jieante Bicycle (china) Co Ltd
Priority date: 1993-10-15
Filing date: 1993-10-15
Publication date: 1994-09-21
Anticipated expiration: 2003-10-15

Abstract

The utility model provides a five-way mandrel structure for a bicycle. Both ends of the containing space inside of a five-way pipe are respectively provided with a push-pull type tightening side, and external ring surfaces of a lining and a ring sleeve inside the five-way pipe are relatively and respectively provided with a push-pull type resisting flange and a connivent surface. The lining can also be screwed inside the ring sleeve. By using the mutual screw connection between the lining and the ring sleeve, the resisting flange and the connivent surface are prompted to be respectively tightened on the tightening side of the five-way pipe. The utility model not only has the advantages of easy assembly and good combination degree, but also does not need processing and re-shaping even if minim deformation is generated after welding the five-way pipe.

Description

Five-centre through axle structure for bicycle

The utility model system is relevant with a kind of attachments of a bicycle, more detailed it, be meant a kind of bicycle bottom bracket mandrel structure especially.

Spindle assemblies status in the structure of whole bicycle is quite important, and just the heart just like human body is the same, is the driving keystone configuration body of bicycle because of spindle assemblies; So, the person is called the five-way pipe to be used for fixing the spindle assemblies, and with existing five-way mandrel structure, as shown in Figure 1, is combined by First Five-Year Plan siphunculus (1), a lining (2), a ring set (3) and spindle assemblies institutes such as (4); Wherein: this five-way pipe (1), make hollow cylindrical, and respectively be provided with the screw thread (1b) (1b ') of one section suitable length at inner spatial accommodation two ends; This lining (2) can be contained in its inside for this spindle assemblies (4), and wherein side face is provided with outside thread (2a) outside the end, is be arranged on the screw thread (1b) of this five-way pipe (1), and lining (2) is located in the spatial accommodation of this five-way pipe (1); This ring set (3) is made hollow and annular, and anchor ring also is provided with outside thread (3a) outside it, can be arranged on the screw thread (1b ') of this five-way pipe (1) other end, and borrow it can make this spindle assemblies (4) be positioned at lining (2) inside; The really above-mentioned integral structure of forming can make this spindle assemblies (4) be positioned on the five-way pipe (1), but, still exist following all shortcomings:

1, when five-way pipe (1) desire and Chain stay, middle pipe and pipe ［ not showing on the figure ］ soldering group is fashionable down, can cause screw thread (1b) (the 1b ') distortion of five-way pipe (1) inside because of the high temperature that local welding produced, can't assemble with lining (2), ring set (3) at all, so tapping again again, or directly lining (2), ring set (3) are pressed in five-way pipe inside, cause five-way pipe (1) or lining (2) to be extruded and be out of shape, damage.

When 2, utilizing the compressing mode to make lining (2), ring set (3) be installed in five-way pipe (1) inside, spindle assemblies (4) can't keep preferable concentricity with five-way pipe (1), even generation deflection situation, and cover is through between interior lining (2) of ring set (3) and the ring set (3) can produce the gap, drive the time one long afterwards, can produce loosening between spindle assemblies (4) and lining (2), the ring set (3).

3, producing distortion and again during tapping when welding back five-way axle, be can the waste manufacturing cost, and its assembling is not easy, group speed is slow, and the conjugation between member be relatively poor.

The purpose of this utility model then is the problem at above-mentioned existence, and a kind of bicycle bottom bracket mandrel structure is provided, and its simple structure, assembling fast and can reach preferable conjugation.

The utility model technical solution:

A kind of bicycle bottom bracket mandrel structure at the inner installing of First Five-Year Plan siphunculus one lining, ring set and spindle assemblies, is through between lining and the ring set spindle assemblies cover, and impels this spindle assemblies can be located in the five-way pipe; It is characterized in that:

This five-way pipe, its inside are provided with the spatial accommodation of the saturating sky in two ends, and respectively are provided with one at this end, spatial accommodation two ends and enlarge gradually from inside to outside and be the packing face of the pushing and drawing shape;

This lining, wherein anchor ring is symmetrical in the packing face of this five-way pipe and is provided with the only flange that supports that pushing and drawing shape was brought and be to an ecto-entad gradually together outside the end, then is provided with screw thread outside one section suitable length at the other end;

This ring set, its outer ring surface one end corresponding to this five-way pipe wherein a packing face also be provided with the joint surface of a pushing and drawing shape, and its inside is provided with screw, can from five-way pipe spatial accommodation wherein an end penetrate, and be arranged in outside this lining on the screw thread, and impel joint surface closely to paste and touch on the packing face of this five-way pipe, make the spindle assemblies strong fix.

The technology that relevant the utility model adopted, means and effect thereof, lift a preferred embodiment and conjunction with figs. now and be described in detail as follows:

Fig. 1 is the exploded perspective view of existing five-way mandrel structure.

Fig. 2 is the exploded perspective view of the utility model one preferred embodiment.

Fig. 3 is above-mentioned preferred embodiment combination section.

Please cooperate and consult Fig. 2, the bicycle bottom bracket mandrel structure of the utility model includes First Five-Year Plan siphunculus (10), a lining (20), a collar (30) and spindle assemblies members such as (40) substantially; Wherein:

This five-way pipe (10), generally make hollow cylindrical, its inside is provided with the spatial accommodation (11) of the saturating sky in two ends, and respectively be provided with a packing face (12) (13) that enlarges and be pushing and drawing shape from inside to outside gradually at this spatial accommodation (11) end, two ends, wherein a packing face (12) side face is to be provided with three short slots (14) that section is triangular in shape, and heart line parallel among end face of this short slot (14) and the five-way pipe (10); And after its manufacturing machines, must in spatial accommodation (11), cover a lining rod earlier, and with Chain stay, middle pipe and pipe members such as ［ not showing on the figure ］ down, be installed on the five-way pipe (10) in the mode of welding;

This lining (20), generally make hollow cylindrical, and length equates with five-way pipe (10) approximately, be provided with an axis hole (21) within it, can supply spindle assemblies (40) to cover therein, and wherein be symmetrical in a wherein packing face (12) of this five-way pipe (10) on the anchor ring outside the end, and be provided with an ecto-entad bring together gradually and be pushing and drawing shape support to end flange (22), and be symmetrical in the short slot (14) of this five-way pipe (10) inside on it and be provided with locating convex block (24) ［ the utility model is provided with three locating convex blocks (24) that are wedge shape ］ more than one, in the time of just can making lining (20) be located in the spatial accommodation (11), borrow to ending flange (22) and touch with packing face (12) subsides, and locating convex block (24) can reach the purpose of location with being embedded mutually of short slot (14), in addition, then be provided with screw thread (23) outside one section suitable length at lining (20) other end;

This ring set (30) is made and is had idle loop body among the screw (31), and side is provided with most latches (32) for instrument rotation ring set (30) outside screw (31); And its outer ring surface one end also is provided with the joint surface (33) of a pushing and drawing shape corresponding to this another packing face of five-way pipe (10) (13), when an end wherein from five-way pipe (10) spatial accommodation (11) wherein an end penetrate, this screw (31) just can be arranged in outside this lining (20) on the screw thread (23), and impel joint surface (33) closely to paste and touch on the packing face (13) of this five-way pipe (10), just can make spindle assemblies (40) strong fix.

When five-way pipe (10) utilizes welding manner and Chain stay, middle pipe and member such as pipe is consolidated into one down, because to be equipped with a lining excellent in spatial accommodation (11) inside during welding, so the deflection of five-way pipe (10) is quite little; And when desire makes up, earlier this lining (20) being had one of outside thread (23) end penetrates from spatial accommodation (11) one ends that five-way pipe (10) has short slot (14), and when being sheathed with the end, just make support ending flange (22) and can pasting and touch on the packing face (12) of five-way pipe (10) spatial accommodation (11) of lining (20), and locating convex block (24) is embedded in short slot (14), can make this lining (20) roughly locate; Then, spindle assemblies (40) is located in the axis hole (21) of this lining (20), and again this ring set (30) is penetrated from five-way pipe (10) other end, the screw (31) of its inside just can be arranged in outside this lining (20) on the screw thread (23), and when ring set (30) continuation spiral shell advances, be that the joint surface (33) that can make its outer peripheral face just resists on the packing face (13) of this sleeve (10) at last, can make lining (20), the collar (30) and spindle assemblies members such as (40) are installed in five-way pipe (10) inside, and end flange (22) by packing face (12) (13) and supporting of lining (20), the packing mutually of the joint surface (33) of ring set (30) can impel five-way pipe (10) and lining (20), combination between ring set (30) is quite firm.

So, can find out by above explanation and the utlity model has following advantage:

When 1, being cemented in members such as Chain stay, middle pipe and following pipe on the five-way pipe (10) with welding manner, what can make five-way pipe (10) produce micro-deformation ［ this point is the thing of general five-way Guan Junhui generation ］, but the utility model utilizes the packing face (12) (13) at five-way pipe (10) spatial accommodation (11) two ends, respectively with the joint surface (33) that support to end flange (22), ring set (30) of lining (20) mutually packing paste and touch, it is stronger to obtain preferable conjugation and fastening force.

2, the assembling of the utility model is easy, group speed is fast, and make lining (20) utilize locating convex block (24) inlay card in the short slot (14) of five-way pipe (10), make lining (20) have preferable locating effect, and this ring set (30) is rotating the shortcoming that can avoid lining (20) to be driven to rotate when spiral shell advances.

3, the utility model five-way pipe (10) needn't remake processing, shaping after welding, can reach preferable conjugation with lining (20), ring set (30), so can reduce manufacturing cost.

In sum, the simple structure that this case embodiment is disclosed, to make assembly easy, and can reach expection firmly in conjunction with effect.

Claims

1, a kind of bicycle bottom bracket mandrel structure at the inner installing of First Five-Year Plan siphunculus one lining, ring set and spindle assemblies, is through between lining and the ring set spindle assemblies cover, and impels this spindle assemblies can be located in the five-way pipe; It is characterized in that:

This ring set, its outer ring surface one end corresponding to the five-way pipe wherein a packing face also be provided with the joint surface of a pushing and drawing shape, and its inside is provided with screw, can from five-way pipe spatial accommodation wherein an end penetrate, and be arranged in outside this lining on the screw thread, and impel joint surface closely to paste and touch on the packing face of this five-way pipe, make the spindle assemblies strong fix.

2, the bicycle bottom bracket mandrel structure according to claim 1 is characterized in that: wherein this lining supports and ends flange and be provided with locating convex block more than one, and also is provided with a short slot on the corresponding packing face of this five-way pipe.