CN2197299Y

CN2197299Y - Bicycle bearing assembly

Info

Publication number: CN2197299Y
Application number: CN 94215356
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: 1994-06-15
Filing date: 1994-06-15
Publication date: 1995-05-17
Anticipated expiration: 2004-06-15

Abstract

The utility model relates to a bicycle head bowl assembly, comprising an upper bowl assembly and a lower bowl assembly, wherein, the upper bowl assembly comprises an upper bowl and an upper plug; the bevel of the upper plug is circularly provided with a ball nest; the lower bowl assembly is circularly provided with a ball nest and a lower bowl on the lower plug; the upper bowl assembly is tightened by matching with a bolt; the ball nest of the lower bowl assembly forms an oblique angle of 45 DEG corresponding to a central line; the ball nest with a low oblique angle is arranged on the upper bowl assembly; the low bevel on the periphery of the ball nest with a low oblique angle forms an included angle of 10 to 20 DEG corresponding to the central line of the bicycle head bowl assembly. The utility model can ensure the stable fixing of the upper periphery and can cause the lower periphery to smoothly run simultaneously.

Description

Bicycle bearing assembly

The utility model relates to a kind of bicycle headstock bowl group that bicycle is connected vertical tube and front fork that is used for.

The headset group is arranged at the middle part that bicycle is connected vertical tube and front fork, because of vertical tube for the handgrip plug-in mounting, front fork and front-wheel connect to be established, so headset is the pivot point that the confession handgrip controls to front-wheel steer, is important configuration; General headset structure configuration as shown in Figure 4, upper bowl group 30 is to comprise bowl and top plug 31, upper packing 32, it mainly is to put a ball nest 50 at the inclined plane ring of top plug 31, same, lower bowl group 40 also lower plug 41 pressed on rings put ball nest 50 with lower bowl, difference therebetween only is the member opposite directions such as ball nest 50 of upper and

lower bowl group

30,40, and the upper packing 32 screw lock packings of upper bowl group 30 polygamies unification.

Basically, upper and

lower bowl group

30,40 respectively is equipped with a ball nest 50, but mechanism's occupation mode because of bicycle, cooperate 50 effects of ball nest in last bowl group 30, mainly be that the effect that packing 32 provides the fixing vertical tube is gone up in collocation, be partial to the effectiveness of stationary positioned, and following bowl of group 40 is owing to be connected front fork, front fork is the winding front-wheel again, and the direction of control front-wheel is the car body direct of travel that concerns, therefore following bowl of group 40 equals the flexible smoothness that bowl group 30 is more directly controlled front-wheel steering, so the variant existence of each ball nest 50 effect of upper and lower bowl group 40.

Yet with regard to each ball nest 50 structure of present upper and

lower bowl group

30,40, its anchor ring gradient is 45 degree (with the center line angle of relative upper and lower bowl group), therefore is under the same modality at ball nest 50, just has problems; Because the ball nest 50 of upper bowl group 30 is 45 degree, so the contact-making surface of its relative top plug 31 is identical with the ball nest 50 of lower bowl of group 40 because of gradient, therefore be enough to fixedly packing when forcing in bowl group 30, the ball nest 50 of upper bowl group 30 namely is located in more inflexible fixing positioning states, the identical application of force is with respect to the ball nest 50 of lower bowl of group 40, then cause the ball nest 50 of lower bowl of group 40 by packing, situation will make the ball nest 50 of lower bowl of group 40 be forced to more be closely attached on lower plug 41 in this way; In other words, down lock is urgent because of upper bowl group 30 for front fork, and front fork is up promoted relatively, instead more push against lower bowl of group 40 with the bottom that causes the nearly fork of front fork, so that lower bowl of flexible runnability of group 40 forfeitures, be and must unclamp, lock to adjust the screw lock application of force of upper packing 32 by repetitiousness that it is enough that the phase makes bowl group 30 present stability, lower bowl group 40 tools are flexible runnability enough; And under repetitiousness is adjusted, always have 40 flexibilities of lower bowl group enough, and upper bowl group 30 packing degree are slightly not enough, or the 30 packings of upper bowl group, and 40 flexibilities of right lower bowl group are the shortcoming of deficiency slightly, not only bothers and inconvenience in the assembling; Therefore previous constructions can not be with regard to upper and

lower bowl group

30,40 each mechanism's effectiveness, the integrality that performance is taken what one needs, even the situation that lower bowl of group 40 is stuck and turns to the control difficulty takes place, the riding safety of bicycle is worried the people, really diminish the service life of bicycle, really need to improve.

Main purpose of the present utility model is: a kind of head raceway of bicycle group is provided, the ball nest center line angle relative and the headset group that mainly is upper bowl group is between ten to 20 degree, form a kind of low oblique angle ball nest of low inclined-plane, and the ball nest of lower bowl of group still remains unchanged, use the low inclined design of the ball nest of bowl group, provide, each ball nest of lower bowl group has contact-making surface difference, make bowl group by the packing application of force, do not cause the ball nest of lower bowl of group to produce the problem that has some setbacks that turns round, easily adjustment is by packing to guarantee upper bowl group, and lower bowl group keeps the good state of degree of going slick.

The utility model provides a kind of head raceway of bicycle group, comprise bowl group and lower bowl of group, upper bowl group comprises bowl and a top plug, put a ball nest in the inclined plane ring of top plug, lower bowl group is put ball nest and lower bowl at lower ring beyond the Great Wall, and the configuration opposite direction of upper and lower bowl group is characterized in that: the bolt packing is closed in the assembly of upper bowl, and the relative center line of ball nest of lower bowl group is 45 degree oblique angles; Upper bowl group is to settle low oblique angle ball nest, the low inclined-plane of this low oblique angle ball nest side face relatively and headset group switching centre wire clamp angle be ten to 20 degree.

Effect of the present utility model is, when bolt during by top exerting pressure, low oblique angle ball nest, its level affects contact area is big because of the elevation angle of low oblique angle ball nest, hereat when upper bowl group is bestowed enough by fastening force, the strength that its reception and registration has influence on the lower bowl of ball nest of organizing is just littler, namely consist of the consequently variant because of low oblique angle of the present utility model ball nest by fastening force of upper and lower bowl group, then front fork can not appear as the undue compressing of bowl group and promote, cause the problem that pushes against lower bowl of group, so lower bowl is organized not reason and overlayed fully and lose going slick property.

In other words, because of lower bowl the group the ball nest by the power of packing less than low oblique angle ball nest, therefore the lower bowl of ball nest of organizing has than adequate allowance and makes flexible apron space, do not cause lower bowl of group to form stuck and difficult phenomenon of turning to control, the upper more convenient and quicker of adjustment assembling that provides upper and lower bowl to organize not only packing, the fixing sexual function that goes slick stable and lower bowl of group that requires in upper bowl group is simultaneously reached, and all can respectively meet required.

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

Brief Description Of Drawings:

Fig. 1 is the bowl group cutaway view of going up of the present utility model.

Fig. 2 is a following bowl of group cutaway view of the present utility model.

Fig. 3 closes cutaway view for upper and lower bowl of the present utility model assembly.

Fig. 4 is existing upper and lower bowl group assembled sectional view.

Fig. 5 and Fig. 6 are the utility model and existing relatively angle scheme drawing.

The utility model is a kind of bicycle headstock bowl group, please referring to Fig. 1, Fig. 2, Fig. 3, basically, upper and

lower bowl group

30,40 major parts of the present utility model are all with existing similar, the bowl group 30 enforcement states of going up shown in the drawing, only last bowl group 30 peripheries run through a plurality of bolt 33 in order to packing on bowl organize 30.

Lower bowl of group 40 employed ball nests 20 of the present utility model still are 45 degree oblique angles and not changing, but upper bowl group 30 is to be suitable for the low oblique angle of installing ball nest 10, namely hang down oblique angle ball nest 10 relative and about ten to 20 degree in headset group switching centre wire clamp angle, namely hang down oblique angle ball nest 10 side faces and be made as low inclined-plane 11, therefore with regard to after the change of the present utility model, when positively overcoming existing problem.

Such as Fig. 3, Fig. 5 and shown in Figure 6, low oblique angle of the present utility model ball nest 10 is because of 11 designs of low inclined-plane, compare with respect to horizontal line with existing, the elevation angle of the present utility model is bigger, and low oblique angle of the present utility model ball nest 10 is existing more near vertical straight line because of low inclined-plane 11; When therefore bolt 33 is by top exerting pressure, the low oblique angle ball nest 10 that is the A angle, its level affects contact area is little because of the greatly more existing B angle in the A angle elevation angle of low oblique angle ball nest 10, hereat when upper bowl group 30 is bestowed enough by fastening force, the strength that its reception and registration has influence on lower bowl of group 40 ball nest 20 is just littler, on namely consisting of,

lower bowl group

30,40 by fastening force because of low oblique angle of the present utility model ball nest 10 so that variant, then front fork can not appear as the 30 undue compressings of bowl group and promote, cause to push against lower bowl of group 40 problem, thus lower bowl organize 40 not reason overlayed fully and lost going slick property.

In other words, because of following bowl organize 40 ball nest 20 by the power of packing less than low oblique angle ball nest 10, therefore organize 40 ball nest 20 and have than adequate allowance and make flexible apron space for following bowl, do not cause down bowl group 40 to form the phenomenon of stuck and difficult commentaries on classics control, the not only last more convenient and quicker of adjustment assembling of packing of upper and

lower bowl group

30,40 is provided, the fixing sexual function that goes slick stable and following bowl of group 40 that requires in last bowl group 30 is reached simultaneously, all can respectively meet required.

Claims

1, a kind of head raceway of bicycle group, comprise bowl group and lower bowl of group, upper bowl group comprises bowl and a top plug, put a ball nest in the inclined plane ring of top plug, lower bowl group is put ball nest and lower bowl at lower ring beyond the Great Wall, and the configuration opposite direction of upper and lower bowl group is characterized in that: the bolt packing is closed in the assembly of upper bowl, and the relative center line of ball nest of lower bowl group is 45 degree oblique angles; Upper bowl group is to settle low oblique angle ball nest, the low inclined-plane of this low oblique angle ball nest side face relatively and headset group switching centre wire clamp angle be ten to 20 degree.