CN2934043Y

CN2934043Y - Headstock bowl outer bush positioning structure

Info

Publication number: CN2934043Y
Application number: CN 200620026672
Authority: CN
Inventors: 李坤元
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-07-13
Filing date: 2006-07-13
Publication date: 2007-08-15
Anticipated expiration: 2016-07-13

Abstract

An external bush positioning structure of cartridge headset comprises a water-proof positioning ring, an external bush and an auxiliary positioning ring. The external bush combination is arranged at external side of the water-proof positioning ring while the internal side of the water-proof positioning ring can be tightly binding with the front fork of the bicycle, and clamped on the auxiliary positioning ring in order to achieve the effects of combining the function of the water-proof and positioning of the external bush. The water-proof ring of the utility model not only has the effects of positioning the external bush, a water retaining part is radial extended from the top of the water-proof positioning ring and when the water-proof positioning ring is and the clamp of the external bush are combined arranged the space between the external bush and front fork of the bicycle can be sealed by the water retaining part. The umbrella-shaped external bush can provide appropriate protection and sheltering for the cartridge headset, which makes the cartridge headset can not easily be infiltrated by the rain or dust. Due to the water-proof ring has the double effects of water-proof and positioning, the utility model can reduce the amount of the components and improves the convenience of the processing and assembly.

Description

Headstock bowl external bushing location structure

Technical field

The utility model relates to a kind of fixed sturcture, relate in particular to a kind of simple in structure, processing, headstock bowl external bushing location structure easy to assembly.

Background technology

Bicycle has can go on a long journey the characteristic of taking into account environmental protection again, and in today of paying attention to recreation, go for a drive by bike and not only can forge the chain physique, more can contribute to one's peace of mind of inner tranquility, therefore although the motor bike Occupation coefficient is quite general, but really can't substitute bicycle fully, so bicycle still is popular among the people now, wherein, influence the key point of the handling and degree of balance of bicycle, promptly be and vertical tube, preceding pipe, the headstock bowl group structure that the front fork collocation is installed, because of vertical tube is to be connected in bicycle handle, and front fork is to be connected in the bicycle front-wheel, so the headstock bowl is self-evident for the importance of bicycle, therefore, designing a simple in structure and headstock bowl group that safety is good is the target of bicycle industry concerted effort.

And for preventing that rainwater or dust from infiltrating in the headstock bowl group; headstock bowl group is caused harmful effect or makes it produce fault; therefore in the streets there is the dealer to propose outside headstock bowl group, to have additional again the design of outer liner; as No. the 534064th, TaiWan, China; " the assembling structure-improved of headstock bowl protection " patent case; it mainly includes headstock bowl group; one auxiliary positioning ring cowling; one outer liner; wherein this outer liner and auxiliary positioning ring cowling are to have first circular groove and second circular groove respectively; this first circular groove is sheathed for waterproof apron; this second circular groove then is to establish for the steady ring snare; this outer liner sets firmly by this location ring and auxiliary positioning ring, and prevents that with waterproof apron rainwater or dust from being infiltrated by the gap.

Though above-mentioned existing headstock bowl group is provided with outer liner, but ring fixed position, location utilized, and the effect that cooperates waterproof apron increase water proof and dust proof, yet this kind design still has inconvenience in the manufacturing and assembling:

Existing headstock bowl need form the twice circular groove, the first road circular groove is sheathed for waterproof apron, the second road circular groove is then established for the steady ring snare, so can reach the location outer liner, and water proof and dust proof, but this kind design not only can increase component count, and for the outer liner increase also relative with the manufacturing step of auxiliary positioning ring cowling, cause assembling to be difficult for, and the higher shortcoming of productive costs, stress efficient and economical and practical modern society, having headstock bowl outer liner locate mode now as a complete unit, its poor practicability.

The utility model content

Technical problem underlying to be solved in the utility model is, overcomes the above-mentioned defective that prior art exists, and a kind of headstock bowl external bushing location structure is provided, and it has simple in structure, processing, advantage easy to assembly.

The technical scheme that its technical matters that solves the utility model adopts is:

A kind of headstock bowl external bushing location structure is characterized in that, comprises a waterproof nest, an external bushing and auxiliary positioning ring; This waterproof nest outside is to establish for the external bushing group, and waterproof nest inboard then can combine with the front fork packing of bicycle, and is sticked on the auxiliary positioning ring, has water-proof function and the effect of locating external bushing concurrently to reach.

Aforesaid headstock bowl external bushing location structure wherein has an annular groove and supplies the external bushing inlay card to strengthen anchoring strength outside the waterproof nest.

Aforesaid headstock bowl external bushing location structure, wherein waterproof nest exterior bottom is formed with ring rib and this auxiliary positioning ring inlay card, to improve anchoring strength.

Aforesaid headstock bowl external bushing location structure, wherein external bushing is generally to be umbrella shape, this external bushing inside is in order to cover the headstock bowl group of bicycle, and its top of external bushing and bottom offer opening, and the opening on top is less and be formed with embedding part to establish with waterproof nest inlay card group.

Aforesaid headstock bowl external bushing location structure, wherein waterproof nest top is formed with the retaining section.

Waterproof washer of the present utility model not only has the effect of location external bushing; there is the retaining section on this its top of waterproof nest to radially extending; when waterproof nest and external bushing inlay card group are established; the gap of salable firmly external bushing in this retaining section and bicycle front fork; this external bushing then is umbrella shape can be provided the suitable protection of headstock bowl group and cover, and makes this headstock bowl group be difficult for being infiltrated by rainwater or dust.

By this waterproof washer with waterproof and the double effects of location, reducing component count, and improve processing stack-mounted convenience.

The beneficial effects of the utility model are, have simple in structure, processing, advantage easy to assembly.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the perspective exploded view of the utility model headstock bowl external bushing location structure.

Fig. 2 is the local assembled sectional view of the utility model headstock bowl external bushing location structure.

Fig. 3 is the cross-sectional schematic of the utility model headstock bowl external bushing location structure.

Fig. 4 is the use cutaway view of the utility model headstock bowl external bushing location structure.

The number in the figure explanation:

11---waterproof nest 111---retaining section

112---annular grooves 113---ring rib

12---external bushing 121---embedding part

13---auxiliary positioning ring 131---joint portion

20---headstock bowl groups 21---bowl seat

211---pearl nest 22---steel ball

23---clasp groups 24---bowl lid

31---front fork straight tube 32---front fork beam tube

The specific embodiment

The utility model relates to a kind of headstock bowl external bushing location structure, see also Fig. 1 to shown in Figure 3, it mainly comprises a waterproof nest 11 this headstock bowl external bushing location structure, one external bushing 12, an and auxiliary positioning ring 13, it mainly is to be arranged at headstock bowl group 20 on garage's front fork in order to covering, this 20 of headstock bowl group includes bowl seat 21, steel ball 22, clasp group 23 and bowl lid 24, wherein this headstock bowl group 20 is to combine with the front fork of bicycle is sheathed by bowl seat 21,21 of this bowl seats have pearl nest 211 and establish for 22 groups for steel ball, and cooperate bowl lid 24 and locate this steel ball 22 with clasp group 23, provide the function of bearing whereby for bicycle front fork, so that the bicycle directional lever is free to rotate; Above-mentioned structure, principle and function relevant for headstock bowl group 20 belongs to prior art, so repeat no more.

This waterproof nest 11 is a torus, and it can be plastic cement or other material, thus have slightly elasticity and can be with external bushing 12, front fork is urgent combines; These waterproof nest 11 tops are to radially extending to form retaining section 111, these waterproof nest 11 outsides are formed with the annular groove 112 of an indent and the ring rib 113 of outer lower end evagination in addition, this annular groove 112 is to establish for external bushing 12 inlay card groups, and this ring rib 113 then can be established for auxiliary positioning ring 13 inlay card groups.The inside diameter of this waterproof nest 11 is to be decided by the bicycle front fork diameter that institute's desire group is established, and makes this waterproof nest 11 be friction tight bonding state with bicycle front fork.

This external bushing 12 is generally to be a umbrella body, and its volume inside head bowl group 20 of can buying car in installments is ccontaining, cover this headstock bowl group 20 to reach, and then protection headstock bowl group 20 is difficult for being infiltrated by rainwater or dust; These external bushing 12 tops and bottom respectively are formed with an opening, the opening of this bottom is bigger, so that external bushing 12 covers this headstock bowl group 20, the opening on this top is then less, opening part is formed with the annular groove 112 corresponding embedding parts 121 with waterproof nest 11, and the thickness of this embedding part 121 just can block and is forced in this annular groove 112.

This auxiliary positioning ring 13 is a torus, and its inboard is to be formed with joint portion 131, and this joint portion 131 is for increasing the screw thread or the embossing of auxiliary positioning ring 13 and bicycle front fork anchoring strength; These auxiliary positioning ring 13 top end opening places are can be for ring rib 113 buckles of waterproof nest 11, this auxiliary positioning ring 13 then is to be arranged on the bicycle front fork, in the external bushing 12 and between the headstock bowl group 20,, provide external bushing 12 better structural strength according to this by establishing with the card of waterproof nest 11.

Please cooperate again consult shown in Figure 4, the utility model combines with bicycle front fork, and cover this headstock bowl and organize at 20 o'clock, it is to be sheathed on auxiliary positioning ring 13 on the front fork straight tube 31 of bicycle with joint portion 131 earlier, then that waterproof nest 11 is sheathed with the embedding part 121 of external bushing 12 with annular groove 112, this external bushing 12 is arranged on the front fork straight tube 31, the headstock bowl group 20 that makes this external bushing 12 cover being positioned at bicycle front fork beam tube 32 provides the headstock bowl to organize 20 suitable protections and covers again; These external bushing 12 embedding parts 121 sheathed waterproof nest 11, its inboard is to combine with 31 packings of front fork straight tube, the ring rib 113 of this waterproof nest 11 then can fix with auxiliary positioning ring 13, provide according to this external bushing 12 location in conjunction with strength.

This waterproof nest 11 not only has the effect of location external bushing 12, after assembling is finished, the retaining section 111 of this waterproof nest 11 is the outsides that are positioned at external bushing 12 top end openings, and can will should seal at the place, cooperate in the external bushing 12 of this umbrella is covered in headstock bowl group 20, and can reach the effect that prevents that rainwater or dust from infiltrating.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.

In sum, the utility model is on structure design, use practicality and cost benefit, it is required to meet industry development fully, and the structure that is disclosed also is to have unprecedented innovation structure, have novelty, creativeness, practicality, the regulation that meets relevant novel patent requirement is so mention application in accordance with the law.

Claims

1 one kinds of headstock bowl external bushing location structures is characterized in that, comprise a waterproof nest, an external bushing and auxiliary positioning ring; This waterproof nest outside is to establish for the external bushing group, and waterproof nest inboard then can combine with the front fork packing of bicycle, and is sticked on the auxiliary positioning ring.

2 headstock bowl external bushing location structures according to claim 1 is characterized in that the described waterproof nest outside has an annular groove for the external bushing inlay card.

3 headstock bowl external bushing location structures according to claim 1 is characterized in that described waterproof nest exterior bottom is formed with ring rib and this auxiliary positioning ring inlay card.

4 headstock bowl external bushing location structures according to claim 1, it is characterized in that described external bushing is generally to be umbrella shape, this external bushing inside is in order to cover the headstock bowl group of bicycle, its top of external bushing and bottom offer opening, and the opening on top is less and be formed with embedding part to establish with waterproof nest inlay card group.

5 headstock bowl external bushing location structures according to claim 1 is characterized in that described waterproof nest top is formed with the retaining section.