CN2144092Y - Screw-thread-proof combined device of bicycle frot forks tube and head bowl - Google Patents

Abstract

The utility model relates to a combined device of front fork tubes and head bowls of bicycles without screw threads, mainly comprising an elastic wave-shaped piece matched with an upper bowl and a connecting screw thread tube, wherein, the matching slope of the upper bowl which matches with the forced tightening slope of the connecting screw thread tube is tightly sheathed on the front fork tube by a locking nut which is screw arranged on the connecting screw thread tube; the elastic wave-shaped piece is arranged between the upper bowl and the locking nut, and the elastic wave-shaped piece forms a wave ring shape. The utility model can combine the head bowls of the bicycles on the front fork tubes simply and efficiently without the screw threads.

Description

Screw-thread-proof combined device of bicycle frot forks tube and head bowl

The utility model relates to a kind of bicycle front fork pipe and headstock bowl composite set of screwless, mainly be to go up bowl to cooperate elasticity wave-shaped plate and engage threads pipe, the packing inclined-plane of the cooperation inclined-plane fit engage threads pipe of bowl in the utilization, the elasticity wave-shaped plate of bowl end face location while embedding system front fork tube in the cooperation, insert front fork tube with the cover muzzle of engage threads pipe, must be when the block nut spiral shell be established, compressing elasticity wave-shaped plate is with bowl and engage threads pipe in the packing, make the combination of front fork tube and headstock bowl steady real accurate, further improve in conjunction with effect.

When bicycle combines with vertical tube at front fork tube, must cooperate bowl structure to be hinged with therebetween, and the upward bowl structure of Regular Bicycle can be as shown in Figure 6, on the ring-type pedestal, be provided with negative thread in the bowl 50, cooperate spiral shell to be located at front fork tube 40 corresponding external screw threads, constitute locking state so that go up bowl 50 with front fork tube 40, go up simultaneously to cooperate above the bowl 50 and wear pad, if packing 51 on the nut shape, with the combine effect of bowl 50 on strengthening with front fork tube 40, in year more than this structure row, its effect and cost can not be satisfactory, become permanent unsolved drawback.

Front fork tube 40 and last bowl 50 are without exception only with the mutual packing of screw lock mode, when bowl 50 is with the screw thread of car system front fork tube 40 on brill is attacked, pitch cooperates, the degree of precision of dimension limit is all very strict, screw togather if tension then increases built-up time, the smoothness of hindering work flow, even when the screw thread fit tension, and may damaged screw, causing changes the outfit in the future goes up the puzzlement of bowl 50 or front fork tube 40, the spiral shell establishing is closed if crossing pine then has loosening easily and shortcoming in conjunction with undertighten is arranged, thereby to establish on the effect at spiral shell be not very good; Simultaneously front fork tube 40 be if need change the outfit, and pitch that then must restriction front fork tube 40 thread cuttings needs perfect fitting in last bowl 50, and the user may be because this kind situation, could assemble and finishes and must attempt many front fork tubes 40, makes the people very troublesome; Another disadvantage, be to be bowl 50 bottom inner faces ccontaining ball simultaneously, cooperate consistent inadequately and go up bowl 50 with the pitch of front fork tube 40, or screw thread is processed with error, then will make bowl 50 can't constitute the space of suitable ccontaining ball with last bowl plug 52, may be formed with big space with ball, or too press ball, cause the ball running smooth and easy inadequately or too loosening, make package assembly to rotate flexibly, influence function performance, and last for a long time problem, truly have necessity of improvement for aforementioned these.

Main purpose of the present utility model is: a kind of bicycle front fork pipe and headstock bowl composite set of screwless are provided, make front fork tube need not establish screw thread, can combine with the headstock bowl is firm.

The utility model provides a kind of bicycle front fork pipe and headstock bowl composite set of screwless, mainly comprise bowl, elasticity wave-shaped plate and engage threads pipe, at sheathed top plug of the appropriate location of front fork tube and ring-type ball, and watertight cover, go up bowl, pad, block nut and be set in regular turn on the front fork tube, it is characterized in that:

Last bowl inside is provided with the cooperation inclined-plane, sheathed engage threads pipe in it, and be nested with an elasticity wave-shaped plate, a pad, block nut in regular turn above going up bowl;

Described elasticity wave-shaped plate is the elasticity ring plate that all sides are the regular wave shape, and it is in inside projection one abaculus of appropriate location, and this abaculus is equipped in the corresponding groove that is provided with in the front fork tube outside, and elasticity wave-shaped plate internal diameter is greater than the flat of thread external diameter of engage threads pipe;

The engage threads pipe is the body that a upper end has external screw thread, locking has block nut, hangs the horse spiral shell that continues and be located at all sides on the external screw thread, and central authorities are provided with and the friction tight running-on of front fork tube, and the relative flat of thread in outside below be provided with last bowl cooperate friction tight packing inclined-plane, inclined-plane.Do not need screw thread by aforementioned combination to reach front fork tube, can be in conjunction with the headstock bowl.

The bicycle front fork pipe of described screwless and headstock bowl composite set, the wherein said bowl of going up can be established an annular groove in the inboard, upper end, its opposite end grooving of settling the elasticity wave-shaped plate that respectively stretches out; And elasticity wave-shaped plate both sides are respectively established a teat and are fastened in the cooresponding grooving.

The bicycle front fork pipe of described screwless and headstock bowl composite set, wherein the abaculus of elasticity wave-shaped plate can just be positioned at the central authorities of described two groovings.

The bicycle front fork pipe of aforesaid screwless and headstock bowl composite set wherein hang horse and also can be general nut.

Advantage of the present utility model is:, the utility model has greatly changed the packing mode that in the past screws togather merely, improve the density of precise treatment effectively, cooperatively interact by packing effect multiple tracks, make front fork tube effectively stable with combining of headstock bowl, stop the combination of front fork tube and headstock bowl and close the puzzlement of generation, thereby can improve packaging efficiency and ease of use because of the spiral shell establishing.

Further specify architectural feature of the present utility model and purpose below in conjunction with accompanying drawing.

Brief Description Of Drawings:

Fig. 1 is an element exploded view of the present utility model.

Fig. 2 is a combination appearance figure of the present utility model.

Fig. 3 is an assembled sectional view of the present utility model.

Fig. 4 is a locking action enlarged drawing of the present utility model.

Fig. 5 is an execution enlarged drawing of the present utility model.

Fig. 6 is existing front fork tube and headstock bowl assembled sectional view.

The utility model is a kind of bicycle front fork pipe and headstock bowl composite set of screwless, mainly comprises bowl, elasticity wave-shaped plate and engage threads pipe, and other member is existing mating component, will not describe in detail in this; Please referring to Fig. 1, Fig. 3, last bowl 20 is ring seats, is set as the cooperation inclined-plane of inwardly tiltedly stretching 21 in inside, the inboard, upper end is arranged with an annular groove 22, and annular groove 22 respectively extends a grooving 23 from inside to outside in opposite end, make grooving 23 and annular groove 22 in same plane, so that settle elasticity wave-shaped plate 24; This elasticity wave-shaped plate 24 is that all sides are the contoured elasticity ring plate of regular wave, horizontal projection one teat 241 in both sides is with corresponding grooving 23, inside projection one abaculus 242 in place in the middle of two teats 241, so that be equipped in the corresponding groove 41 that vertically is provided with in front fork tube 40 outsides, the internal diameter of elasticity wave-shaped plate 24 and greater than external screw thread 32 external diameters of engage threads pipe 30; Engage threads pipe 30 is bodys that a upper end has external screw thread 32 in addition, and relative external screw thread 32 belows, outside week side is the packing inclined-plane of outwards tiltedly stretching 31.

Headstock bowl group and each member, the cooperation assembling of front fork tube, please referring to Fig. 1, Fig. 2, Fig. 3, top plug 10 cooperates a plurality of balls 11 of all sides to be set in front fork tube 40 appropriate locations together, the watertight cover 12 that one all sides are down extended, also be inserted in front fork tube 40 top plugs 10 upsides, then go up bowl 20 utilizes it to cooperate inclined-plane 21 to be sleeved on the packing inclined-plane 31 of engage threads pipe 30 in advance, and the running-on 33 of mat engage threads pipe 30 is moved down by the tight cover in front fork tube 40 tops, make bowl 20 outside root edges and watertight cover 12 slightly gapped and fully subsides touch, elasticity wave-shaped plate 24 is aimed at the groove 41 of front fork tubes 40 with its abaculus 242 and is inserted at this moment, and also just involutory the placing on bowls 20 the grooving 23 of two teats 241 is positioned annular groove 22, pad 25 also by front fork tube 40 intussusceptions on elasticity wave-shaped plate 24, block nut 26 also is inserted in and is screwed together in engage threads pipe 30 all sides by front fork tube 40, by block nut 26 along the external screw thread 32 of engage threads pipe 30 down screw lock with compressing pad 25, the plane that cooperates the packing application of force and pad 25, then this strength is applied pressure to and (please cooperate Fig. 4 on the elasticity wave-shaped plate 24, Fig. 5), make the unfairness elastic surface of elasticity wave-shaped plate 24, overlayed above last bowl 20, make engage threads pipe 30 and cooperate inclined design owing to overlay the application of force, make packing inclined-plane 31 along cooperating inclined-plane 21 displacements, and the running-on 33 of the pipe of packing engage threads indirectly 30 is forced tight front fork tube 40 toward in, flush in the apical margin that bowl 20 cooperates inclined-plane 21 until pad 25 end faces, and elasticity wave-shaped plate 24 overlays in last bowl 20 end faces, need not thread cutting to reach front fork tube 40, and obtain the effect of firm combination; At last, just will hang horse 42 and be inserted in and barrel bolt are penetrated by a side and compel the lock combination, and make and hang horse 42 and directly be incorporated into front fork tube 40, and give spiral shell and establish compressing engage threads pipe 30 is unlikely up to be moved to tighten along front fork tube 40, and as Fig. 2 outward appearance.

As seen from the above description, the utility model is reached the characteristics of purpose, cooperating Fig. 4, Fig. 5 to know finds out, be that cooperation inclined-plane 21 by last bowl 20 is sleeved on after the packing inclined-plane 31 of engage threads pipe 30, compel the lock strength by block nut 31 again,, make engage threads pipe 30 because of block nut 31 screw lock strength so that pad 25 and elasticity wave-shaped plate 24 apply pressure to bowls 20, and along packing inclined-plane 31 packing gradually, so that engage threads pipe 30 is in conjunction with the more steady real driving fit of front fork tube 40.

Wherein reach the special place of steady real combination, be that cover is fashionable mutually with engage threads pipe 30 when last bowl 20,21 bottom surfaces, cooperation inclined-plane of last bowl 20 slightly exceed 31 bottom surfaces, packing inclined-plane, this moment, the user was a screw lock block nut 31, make it compel lock application of force compressing pad 25, make its pressure with compressing elasticity wave-shaped plate 24, be equipped in the groove 41 of front fork tube 40 because of the abaculus 242 of elasticity wave-shaped plate 24, restriction elasticity wave-shaped plate 24 still must move down along front fork tube 40 control when being external force pressure, and can not dislocate, cooperate teat 241 to be sticked in the grooving 23 of bowl 20 simultaneously, and place annular groove 22, can guarantee the effective elasticity contact surface of elasticity wave-shaped plate 24 and last bowl 20, can not slip off in the block nut 31 rotation application of forces, influence is communicated to the application of force effect of bowl 20.

Be to apply pressure to pad 25 with block nut 31, utilize its peripheral plane with concora crush elasticity wave-shaped plate 24, make elasticity wave-shaped plate 24 as same the cooperation compel lock strength spring-likely, constitute the elasticity strength of an extruding, cooperate inclined-plane 21 apical margin side faces with indirect subsides, make it along packing inclined-plane 31 and the downslide packing, add the external screw thread 32 of the internal diameter of Upper gasket 25 and elasticity wave-shaped plate 24 greater than engage threads pipe 30, so at pad 25, when 24 packings of elasticity wave-shaped plate move down, can't influence and destroy external screw thread 32, and cooperate 21 bottom surfaces, inclined-plane to flush in 31 bottom surfaces, packing inclined-plane until last bowl 20, make bowl 20 consolidation ground in conjunction with engage threads pipe 30 all sides, and making bowl 20 insert and put ball rightly with top plug 10, it is smooth and easy that ball can be turned round, and compress front fork tube 40 and firm the combining of headstock bowl realization effectively; And compel lock simultaneously at block nut 26, engage threads pipe 30 is because of being subjected to this strength and inclined design, so having by past tenesmus lock strength and along cooperation inclined-plane 21 slightly, drawing up moves, hereat, hang horse 42, make the spiral shell that hangs horse 42 be provided with the effect of tightening at its external screw thread 32 screw locks for anti-engage threads pipe 30 past superior displacements, and the position of restriction engage threads pipe 30, reach locating effect, and can be with the effect that makes things convenient for the towing brake line, with the multiple pinpoint structure of tool.

Claims (4)

1, a kind of bicycle front fork pipe of screwless and headstock bowl composite set, mainly comprise bowl, elasticity wave-shaped plate and engage threads pipe, it is at sheathed top plug of the appropriate location of front fork tube and ring-type ball, and watertight cover, go up bowl, pad, block nut and be set in regular turn on the front fork tube, it is characterized in that:

Last bowl inside is provided with the cooperation inclined-plane, sheathed engage threads pipe in it, and be nested with an elasticity wave-shaped plate, a pad, block nut in regular turn above going up bowl;

Described elasticity wave-shaped plate is the elasticity ring plate that all sides are the regular wave shape, and it is in inside projection one abaculus of appropriate location, and this abaculus is equipped in the corresponding groove that is provided with in the front fork tube outside, and elasticity wave-shaped plate internal diameter is greater than the flat of thread external diameter of engage threads pipe;

The engage threads pipe is the body that a upper end has external screw thread, locking has block nut, hangs the horse spiral shell that continues and be located at all sides on the external screw thread, and central authorities are provided with and the friction tight running-on of front fork tube, and the relative external screw thread in outside below be provided with last bowl cooperate friction tight packing inclined-plane, inclined-plane.

2, the bicycle front fork pipe of screwless according to claim 1 and headstock bowl composite set is characterized in that: the described bowl of going up is established an annular groove in the inboard, upper end, its opposite end grooving of settling the elasticity wave-shaped plate that respectively stretches out; And elasticity wave-shaped plate both sides are respectively established a teat and are fastened in the cooresponding grooving.

3, the bicycle front fork pipe of screwless according to claim 1 and 2 and headstock bowl composite set, it is characterized in that: the abaculus of elasticity wave-shaped plate just is positioned at the central authorities of described two groovings.

4, the bicycle front fork pipe of screwless according to claim 1 and headstock bowl composite set is characterized in that: hanging horse is a nut.

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