CN2170909Y

CN2170909Y - Toothless front fork cup assembly for bicycle

Info

Publication number: CN2170909Y
Application number: CN 93215184
Authority: CN
Inventors: 纪易成
Original assignee: YUSHENG TRAFFIC MATERIAL AND EQUIPMENT CO Ltd
Current assignee: YUSHENG TRAFFIC MATERIAL AND EQUIPMENT CO Ltd
Priority date: 1993-07-06
Filing date: 1993-07-06
Publication date: 1994-07-06
Anticipated expiration: 2003-07-06

Abstract

The utility model relates to a toothless front fork cup assembly for bicycle. An embedding groove is arranged on a front fork pipe, and the outside of the embedding groove is sheathed with a bundle sleeve which is provided with an open groove; the periphery of the bundle sleeve is provided with threads to cause the component of an upper cup assembly to be spirally arranged on the bundle sleeve; the inner ring surface of an upper plug is provided with a ratchet washer, and a projecting block extends on the inner ring surface of the ratchet washer; the projecting block can be abutted inside the embedding groove and is tightly abutted by the penetrating of a screw bolt from the outside of the upper plug; a tightening ring is arranged on the inner surface of an upper tightness, and the tightening ring is also provided with an abutting block which extends inside the embedding groove to cause the whole of the utility model to be combined stably without looseness.

Description

Toothless front fork cup assembly for bicycle

The utility model relates to a kind of bicycle anodontia front fork bowl group, the particularly a kind of front fork bowl group that can not become flexible.

The effect of front fork bowl is to provide the rotating function of handlebar, when handlebar is rotated, can drive front-wheel turns to together, but do not influence the direction that whole vehicle frame advanced originally, so the effect of front fork bowl is very important, in general design, an as important design focal point is classified the stationarity of front fork bowl in the capital, because when under the situation of constantly handling maneuver and car body vibrations, loosening a little situation being arranged as if the front fork bowl, promptly can influence the linking steady character between whole driver's handle and vehicle frame, and as the phenomenon that is will cause danger in the driving, and as Fig. 4, shown in Figure 5, be utilize oblique cone shape pressure ring 50 and same tool oblique cone shape inclined-plane 60 of top plugs the packing effect and reach the design of location, it supports above pressure ring 50 establishes a compressing pipe 51, one end and the handlebar beam tube 52 of this compressing pipe 51 are connected as a single entity, and compressing pipe 51 is to be sheathed on outside the front fork tube 70, the screw 71 of these front fork tube 70 end face tool negative threads, must be screwed into pressing lid 53, make pressing lid 53 extrusion compressing downwards pipe 51, make the end of compressing pipe 51 be subjected to pressing lid 53 pressure and to pressing down, and then make and produce between the scalene cone of pressure ring 50 pressurizeds and top plug 60 vertically and pressure radially and packing, utilize such packing effect and locate, and as the structural shape that is the worry of deficiency is arranged on robustness, because on the vibrations of car body are stressed, when especially advancing on the uneven road surface of jolting, the very high frequency of car body vibrations, and stressed when being shaken all is the pattern of alternation, the i.e. constantly vibrations of alternation one on the other, so locate most probably and can after being subjected to high-frequency mutual shaking force, produce wearing and tearing because of the cause of material in the mode of packing, cause packing between the two to cooperate the generation gap, produce noise, give the bad impression of people's bad, perhaps must be again through adjusting, so not satisfactory in loosening considering; Cooperate packing because be with the inclined-plane in addition, so except the gradient precision on the inclined-plane must be noted that, the packing position of its cooperation will have influence on the nargin of bowl steel ball 61, to top plug 60 too tightly or too the cooperation of pine all can cause flaw on the rotating property, the present topples over as if car body, handlebar is directly clashed into, just can make the directly stressed even distortion of compressing pipe 51, cause the quality of fit of pressure ring 50 steel balls 61 directly impaired, and the car body tip-car almost can not be avoided being impacted, and proves that fully the design as being truly has weak point.

Main purpose of the present utility model is: a kind of bicycle anodontia front fork bowl group is provided, by on front fork, establishing a caulking groove, its outer collar that is provided with, elements such as the above packing of its external thread sleeve, top plug, wherein the top plug inner face is filled out and is established with ratchet washer, make front fork tube and front fork bowl and other combination of elements more firm, will never become flexible.

A kind of bicycle anodontia front fork bowl group that the utility model provides, comprise front fork tube, collar, go up packing, it is characterized in that: front fork tube is provided with a caulking groove, its outer sheathed a branch of cover, establishing one on this collar slots longitudinally, the surface is then established external screw thread and is matched with top plug and last packing, a sheathed ratchet washer on collar, ring is established a projection in this ratchet washer, this projection is stretched among the caulking groove of front fork tube, the outer sheathed described top plug of this ratchet washer, and a bolt is screwed into beyond the Great Wall and is pushed against on ratchet end by last.

Described bicycle anodontia front fork bowl group is characterized in that: described collar top section can form a ring inclined-plane.

Above-mentioned bicycle anodontia front fork bowl group is characterized in that: the described inner ring surface of going up packing can be established a packing ring, and its inner ring surface has to piece to stretching in the caulking groove of front fork tube.

Above-mentioned bicycle anodontia front fork bowl group, it is characterized in that: described packing ring inner ring surface also can form the inclined plane shape that cooperates with the collar inclined-plane.

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 exploded drawings of the present utility model.

Fig. 2 is the partly local combination view of bowl of going up of the present utility model.

Fig. 3 is a combination view of the present utility model.

Fig. 4 is the exploded drawings of existing front fork bowl group.

Fig. 5 is the combination view of existing front fork bowl group.

Please referring to Fig. 1, Fig. 2, the utility model front fork tube 10 is provided with a caulking groove 11 in its side face, the collar 20 of sheathed thereon one vertical tool fluting 21 after it is stretched through by vehicle frame 12 bottom surfaces, these collar 20 end faces form the inclined-plane, and all sides are provided with screw thread, on collar 20 then in regular turn spiral shell establish into ratchet washer 30, top plug 31, water proof ring 32 and packing ring 41 and go up packing 40.

Ratchet washer 30 is a ring bodies, its outer peripheral face forms ratchet-like, inner face is projection one projection 301 then, projection 301 can be stretched among the caulking groove 11 of front fork tube 10, the top plug 31 of the hydrosphere 32 of setting up defences is filled up on a then sheathed top, its outside, and on top plug 31, establish an oblique screw 33, and can be butted on the ratchet part of ratchet washer 30 for a bolt 34 outward by being screwed into, make it the location; And establish packing 40 in the epimere part spiral shell of collar 20, its inner face is preset a packing ring 41, these packing ring 41 inner faces are established one and are supported piece 42, make to piece 42 and also be stretched in the caulking groove 11 of front fork tube 10, the medial surface of packing ring 41 is the inclined-plane in addition, just can cooperate with the section inclined-plane, top of collar 20, makes when last packing 40 spiral shells are moving, packing ring 41 can be oppressed collar 20 in its inclined-plane, makes collar 20 generation contractions and has the effect of tightening.

During the utility model assembling, the moving action of the spiral shell of packing 40 can make collar 20 be subjected to the compressing of packing ring 41 and utilizes the adjustment of fluting set on it 21 and tightening on front fork tube 10 tightly in the utilization, cooperate upward packing 40 turns own again and can make collar 20 more firm tightening on front fork tube 10, top plug 31 is established a ratchet washer 30 in its inner face in addition, and the projection 301 on it is stretched in the caulking groove 11 of establishing front fork tube 10, and be screwed into by screw 33 by top plug 31 external diameters with a bolt 34, and make its end be butted on the ratchet position of ratchet washer 30, and it is loosening to prevent effectively that it from reversing.

So, effect of the present utility model is: the effect that actv. obtains tightening but collar 20 is subjected to the effect of packing ring 41, then unlikely turn of packing ring 41 itself because support that piece 42 is butted in the caulking groove 11, guarantee the location of collar 20, via the turn of last packing 40 collar 20 firm bundles are connected on the front fork tube 10 again, top plug 31 then is connected to ratchet washer 30 and has positioning function with a bolt 34, and the projection 301 of the inner ring surface of ratchet washer 30 is also stretched and is established in the caulking groove 11, so unless the user screws out this bolt 34 with instrument, otherwise ratchet washer 30 just can not become flexible because of vibrations, and certain reaching that a kind of existing product institute is inaccessiable to prevent loosening effect, actv. has solved the drawback that above-mentioned existing because road conditions are produced when bad.

Claims

1, a kind of bicycle anodontia front fork bowl group, comprise front fork tube, collar, go up packing, it is characterized in that: front fork tube is provided with a caulking groove, and its outer sheathed a branch of cover is established one and slotted longitudinally on this collar, the surface is then established external screw thread and is matched with top plug and last packing, ring is established a projection in the sheathed ratchet washer on collar, this ratchet washer, and this projection is stretched among the caulking groove of front fork tube, the outer sheathed described top plug of this ratchet washer, and a bolt is screwed into beyond the Great Wall and is pushed against on ratchet end by last.

2, bicycle anodontia front fork bowl group according to claim 1 is characterized in that: described collar top section forms a ring inclined-plane.

3, bicycle anodontia front fork bowl group according to claim 2 is characterized in that: the described inner ring surface of going up packing is established a packing ring, and its inner ring surface has to piece to stretching in the caulking groove of front fork tube.

4, bicycle anodontia front fork bowl group according to claim 3, it is characterized in that: described packing ring inner ring surface also forms the inclined plane shape that cooperates with the collar inclined-plane.