CN2308550Y

CN2308550Y - Bicycle front bowl group

Info

Publication number: CN2308550Y
Application number: CN 97218005
Authority: CN
Inventors: 纪易成
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-05-29
Filing date: 1997-05-29
Publication date: 1999-02-24
Anticipated expiration: 2007-05-29

Abstract

The utility model relates to a bicycle head bowl group used for bicycles. In the utility model, one series of roller balls are ranged between the upper plug and the adjusting cover of an upper bowl group and between the lower plug and the seat ring of a lower bowl group. The utility model is characterized in that a backing ring is arranged between the roller balls and the adjusting cover or the seat ring, the backing ring is provided with an arc bunting surface for matching the roller balls, the inner peripheral edge of the backing ring forms a circle of clamping brims used for a limiting ring forming clamping by a corresponding hook edge, the clamping brims matching the limiting ring is combined on the inside cycle surface of the upper plug or the lower plug by a tightly matching method, for causing the backing ring to be effectively pressed and supported on the surfaces of the roller balls, and then a new bicycle head bowl group is formed.

Description

Headstock bowl group

The utility model relates to a kind of headstock bowl group that applies to bicycle.

In the composition structure of bicycle, generally can be nested with suitable headstock bowl group before front fork straight tube and vehicle frame between the pipe, use and make things convenient for combining of handlebar and front fork, and satisfy the needs of turning of bicycle control; And general headstock bowl set constructor is as Fig. 4 at present, shown in 5, its headstock bowl group can be divided into, following

bowl group

10,20, should go up bowl group 10 is the balls 13 that placed annular ball nest 132 by a series of rows, sliding putting is positioned top plug 11 and adjusts to cover 12 corresponding arcs to face 112, constitute between 122, and adjust and cover 12 outside threads that can its negative thread push up section with the front fork straight tube and be screwed, the spiral shell of cooperation packing cap 14 is established and is covered, allow bicycle front fork be incorporated in the preceding pipe 50 of vehicle frame with straight tube, and following bowl of group 20 also is by a series of ball 23 mat ball nests, and sliding putting is positioned play plug 21 and seat ring 22 corresponding arcs to face 212, constitute between 222; So, utilize aforesaid upper and

lower bowl group

10,20 to form the headstock bowl group of bicycles, allow bicycle front fork firmly be incorporated into before the vehicle frame in the pipe, and keep turning to smoothly flexibly the control effect with straight tube.

Present traditional headstock bowl set constructor shown in Fig. 4,5 though can provide bicycle to turn to the control effect flexibly smoothly, because that its structure design is not attained is perfect, is therefore implemented using, and remains at least in Lieque fraud down:

(1), assembling makes a mistake easily: based on supplying cyclery or the own stack-mounted demand of customer, the

ball

13,23 of headstock bowl group is to be embedded in the annular ball nest 132 mostly at present, by ball nest 132 13,23 groups on ball is placed upper and

lower bowl group

10,20 structures again, use and avoid

ball

13,23 to be scattered everywhere; But such design, not only cause the cost of headstock bowl group to increase, and because of ball nest 132 has specific mounting direction, common people had both made voluntarily the assembling difficulty of also makeing mistakes examine and know (as shown in Figure 5), and caused puzzlement such as the dumb and headstock bowl group undue wear of turning of bicycle control;

(2), adjust the easy embrittlement of lid, distortion and forfeiture necessary accuracy: because top plug 11 cover 12 and plug 21 and seat ring 22 insert and put

ball

13,23 in opposite directions down with adjusting, for avoiding the application force that face 112,122,212,222 hardness can't be born

ball

13,23 for a long time that supports of these members, therefore must be after these structures machine, carry out suitable heat treatment, improve the superficial hardness of these members; But after bakingout process, these members have the phenomenon of structure embrittlement unavoidably, and working accuracy what can produce slightly distortion, particularly adjusts cover 12 essentially simultaneously supporting face 122 pressure holding balls 13 and with internal screw-thread screw front fork straight tube top section, is subjected to heat treatment and influences the easiliest; This be because

(1) cover 12 with hardness during outside thread in bicycle front fork straight tube top section of high and internal screw-thread screw distortion slightly when adjusting, the outside thread of front fork straight tube top section is easy to and will be worn, and directly influences front fork and covers 12 steadinesss that screw togather, accuracy and durability with adjustment;

(2) because 12 structure embrittlement is covered in adjustment, therefore when it is screwed together in bicycle front fork straight tube top section,, just allows adjustment cover 12 possibly and produce the damaged phenomenon of bursting apart if the operator is firmly excessive, reduce the headstock bowl widely and organized due durability;

(3) owing to adjust and cover 12 interior spiral surface and are separate machined to face 122, this has had error slightly between the two, add to adjust and cover 12 distortion because of the heat treatment generation, make to adjust cover 12 screw togather the location after, the face that the supports 122 tangible very difficult pressure holdings equably of its periphery are on each ball 13, cause the bad phenomenon of bowl group 10 monolateral local pressures easily, influence the smoothness of turning of bicycle control and the durability of headstock bowl group;

(3), the stressed load of ball is big: because the ball the 13, the 23rd of headstock bowl group is embedded in the ball nest 132, this make can be arranged in top plug 11 with adjust cover 12 and down

ball

13,23 numbers between plug 21 and the seat ring 22 greatly reduce (generally about only have about 16), cause the stressed load of each

ball

13,23 big, not only

ball

13,23 is easy to generate abrasion deformation, and what can influence bicycle turns to the control effect, really has and is studied improved necessity again.

Edge is, this creator promptly at the every scarce fraud of above-mentioned traditional headstock bowl group, is actively studied improvement, studies and development and Design goes out the utility model through long-term effort.

The purpose of this utility model provides a kind of excellent headstock bowl group of facility and durability and precision of assembling; Based on this purpose, the utility model is in ball and adjusts respectively to serve as a contrast between lid or the seat ring and put a gasket ring, the arc that this gasket ring is provided with accurate cooperation ball supports face, and inner edge spreads out and establishes a circle card eaves, can form blocking with corresponding hook edge for placing restrictions on ring, and place restrictions on ring is the inner peripheral surface that is incorporated into top plug or fills in down in the flush fit mode, allows the gasket ring pressure holding avoid ball to drop out arbitrarily in a series of balls surface effectively, and group constitutes a kind of headstock bowl group;

So, utilize gasket ring and place restrictions on the design of ring, can add man-hour in the builder, the top plug that just directly a series of balls is incorporated into headstock bowl group reaches plug place down, not only can improve the stack-mounted convenience, and the puzzlement of exhausted arming mismatch mistake, simultaneously because the hardness of gasket ring is enough born the load of ball, the adjustment lid of last bowl group or the seat ring of following bowl of group just need not to remake heat treatment, effectively overcome because of adjusting and cover all puzzlements that heat treatment is derived.

Another purpose of the present utility model provides a kind of can the raising and turns to the headstock bowl group of controlling smoothness and stationarity; Brought forward is described, ball of the present utility model need not to be embedded in the ball nest, not only can cost-cutting, and can significantly increase and be slidedly arranged on top plug and adjust lid and the ball number between plug and the seat ring down, make the load of each ball littler and average, further improve the smoothness and the stationarity of turning of bicycle control.

The technical solution of the utility model is to provide a kind of headstock bowl group, and this headstock bowl is organized in the top plug of last bowl group and adjusted between the lid, and between the following plug and seat ring of following bowl of group, respectively is arranged with a plurality of balls, it is characterized in that:

Last bowl is organized in the arc of adjusting lid and is supported between face and the ball, lining is equipped with a metal gasket ring, the anchor ring of this gasket ring forms the arc that cooperates ball and supports face, and the gasket ring inner edge spreads out and establishes a circle card eaves, form with the corresponding hook edge of apical margin and sliding establish blocking for placing restrictions on ring, and place restrictions on ring is incorporated into top plug with the flush fit form inner peripheral surface open side.

In above-mentioned headstock bowl group, between the seat ring and ball of following bowl of group, can serve as a contrast and be equipped with a metal gasket ring, this gasket ring forms the arc that cooperates ball in anchor ring and supports face, and the gasket ring inner edge spreads out and establishes a circle card eaves, form with the corresponding hook edge of root edge and sliding establish blocking for placing restrictions on ring, and allow and place restrictions on ring and be incorporated into down the inner peripheral surface open side of filling in the flush fit form;

And, the steel ring plate that gasket ring can the moulding of punching out mode; Perhaps heat treated metal ring plate;

In addition, the card eaves of gasket ring and place restrictions between the hook edge of ring and can be installed with narrow and small gap;

The utility model compared with the prior art advantage and good effect is very obvious.By above technical scheme as can be known, because the structure design that the utlity model has has following advantage at least on use is implemented:

(1), the sorrow of assembling quick and convenient and arming mismatch mistake: please referring to shown in Fig. 1,2, headstock bowl of the present utility model is organized when making production, directly utilize gasket ring 15 and place restrictions on ring 16 13,23 groups on a series of balls are placed upper and

lower bowl group

10,20 structures, not only save

ball

13,23 effectively and be embedded in the tooling cost and the time of ball nest 132, and after cyclery or customer buy back, cover 12 and seat ring 22 combinations in addition as long as will adjust, just can finish to quick and convenient the assembling of headstock bowl group, and the puzzlement of exhausted arming mismatch mistake;

(2), can reduce heat treatment cost and raising product precision: the utility model utilization is through bakingout process or the enough big gasket ring 15 of hardness, directly pressure holding is in

ball

13,23 surfaces, gasket ring 15 can bear the application force of

ball

13,23 for a long time, make to adjust cover 12 and seat ring 22 all need not to heat-treat again, this not only can effectively reduce to adjust and covers 12 and the heat treatment cost and time of seat ring 22, and adjust cover 12 and seat ring 22 can not guarantee the precision of headstock bowl set product because of heat treatment produces distortion;

(3), can improve the durability of product: brought forward is described, cover 12 no hardness change and heat treatment deformations owing to adjust, make to adjust and cover 12 during with the outside thread of internal screw-thread screw in bicycle front fork straight tube top section, can avoid adjusting cover 12 and the screw thread of front fork straight tube be worn, add 12 problems that do not have a structure embrittlement of covering of adjusting, not only can guarantee bicycle front fork and adjust to cover 12 steadiness that screws togather and accuracies, and can further improve the durability of headstock bowl group;

(4), ball mean forced and turn to control smooth and easy flexibly: gasket ring 15 of the present utility model supports face 152 pressure holdings in a series of

balls

13,23 surfaces with what it accurately cooperated

ball

13,23, after the adjustment lid 12 of last bowl group 10 screws togather the location, gasket ring 15 effectively fifty-fifty pressure holding on each ball 13, exhausted conventional confguration easily produces the improper point of monolateral local pressure, thereby can guarantee the smoothness of turning of bicycle control and the durability of headstock bowl group;

(5), alleviate the stressed load of ball: a series of balls the 13, the 23rd of the present utility model, directly be arranged in top plug 11 and adjust cover 12 and fill in down 21 and seat ring 22 between, can increase the number (generally being about 26) of

ball

13,23, effectively alleviate the stressed load of each

ball

13,23, what allow bicycle turns to control smooth and easy more flexibly.

Further specify specific structural features of the present utility model and purpose below in conjunction with accompanying drawing.

Brief Description Of Drawings:

Fig. 1 is the assembled sectional view of the utility model preferred embodiment.

Fig. 2 is the three-dimensional exploded view of bowl group on the utility model, in order to explanation the utility model adjustment lid, gasket ring, place restrictions on the assembly relation of ring, ball and top plug.

Fig. 3 is the local amplification view of bowl group on the utility model, and the group of further show the utility model adjustment lid, gasket ring, placing restrictions on ring, ball and top plug is put form.

Fig. 4 is the assembled sectional view of traditional headstock bowl group.

Fig. 5 is the three-dimensional exploded view of going up the bowl group of traditional headstock bowl group, the enforcement scheme drawing of easy loading error when using pearl nest location in order to the explanation ball.

The utility model is a kind of excellent headstock bowl group of facility and durability and precision of assembling; As shown in Figure 1, this headstock bowl group is made of jointly last bowl group 10 and following bowl of group 20, bowl group 10 is covered 12 cooresponding arcs with top plug 11 and adjustment and is inserted and put a series of balls 13 in opposite directions to face 112,122 on it, and adjust and cover 12 outside threads with internal screw-thread screw front fork straight tube top section, and following bowl of group 20 is that following plug 21 inserts and puts a series of balls 23 with seat ring 22 cooresponding arcs in opposite directions to face 212,222, by the combination of upper and

lower bowl group

10,20, group constitutes the basic structure of headstock bowl group; Since these structures be with aforementioned conventional mutually roughly the same, and the creation emphasis of non-this case, appearance is not given unnecessary details.

Continuous please referring to shown in Fig. 1,2,3, the main feature of the utility model is to be: at a series of

balls

13,23 and adjust cover 12 or seat ring 22 between each serves as a contrast and puts a gasket ring 15, and gasket ring 15 forms a circle card eaves 154 in inner peripheral, forms the sliding blocking of establishing for placing restrictions on the hook edge 162 of ring 16 with apical margin; Wherein:

Gasket ring 15 is a kind of endless metal lamellar bodies with punching out mode straight forming, it can be the steel lamellar body of the suitable hardness of tool, or increase the hardness of metal ring plate with heat treatment mode, and use allowing gasket ring 15 have enough abrasive resistances, bear the application force that

ball

13,23 produces; And corresponding to adjust cover 12 or seat ring 22 to face 122,222, the arc that these gasket ring 15 anchor rings form

accurate cooperation ball

13,23 supports face 152, and spread out in the inner edge of gasket ring 15 and to establish the card eaves 154 of a circle proper width, can form blockings with corresponding hook edge 162 for placing restrictions on ring 16;

Aforementioned to place restrictions on ring 16 are ring slices of upper and lower plug 11, the 21 internal diameter specifications of a precision-fit, use to allow and place restrictions on ring 16 and directly utilize the flush fit mode, firmly are incorporated into the top plug 11 or the inner peripheral surface open side of plug 21 down; This is placed restrictions on ring 16 and outwards spreads out in outside ora terminalis and establish a circle hook edge 162, make that placing restrictions on ring 16 can utilize hook edge 162 hooks to hold gasket ring 15 corresponding card eaves 154, gasket ring 15 can be slided establish the form pressure holding in a series of

balls

13,23 surfaces, and can effectively avoid

ball

13,23 to drop out arbitrarily, utilize gasket ring 15 card eaves 154 to stay the close gap of establishing with placing restrictions on to encircle between the 16 hook edge 162 simultaneously, allow gasket ring 15 keep good avidity, guarantee the slip smoothness of

ball

13,23 and gasket ring 15;

So, relevant dealer is when making headstock bowl group, as long as with a series of

balls

13,23 be stained with fitly be arranged in behind the butter top plug 11 or down plug 21 support face 112,212 places, again gasket ring 15 is covered pressure holding on

ball

13,23, cooperation will be placed restrictions on ring 16 is positioned upper and

lower plug

11,21 with flush fit mode extrusion inner peripheral surface open side, just can utilize the blocking of placing restrictions on ring 16, allow gasket ring 15 and a series of

ball

13,23 firmly be incorporated into top plug 11 and reach plug 21 places down, group constitutes a kind of brand new headstock bowl group;

After cyclery or customer buy headstock bowl group back, cover 12 and in addition combination of seat ring 22 as long as directly will adjust, just can finish the assembling of headstock bowl group, considerably fast convenient, and the puzzlement of exhausted arming mismatch mistake, enough bear from ball 13 because of the hardness of gasket ring 15 simultaneously, 23 application force, the seat ring 22 that the feasible adjustment lid 12 of going up bowl group 10 reaches following bowl of group 20 fully needn't be again through bakingout process, just can be assembled into accurate durable headstock bowl group, not only effectively reduce the manufacturing cost of headstock bowl group, and can overcome traditional headstock bowl group and cover all puzzlements of deriving after 12 heat treatments because of adjusting.

Claims

1, a kind of headstock bowl group, this headstock bowl are organized in the top plug of last bowl group and are adjusted between the lid, and between the following plug and seat ring of following bowl of group, respectively are arranged with a plurality of balls, it is characterized in that:

2, headstock bowl group according to claim 1, it is characterized in that: wherein between the seat ring and ball of following bowl of group, lining is equipped with a metal gasket ring, this gasket ring forms the arc that cooperates ball in anchor ring and supports face, and the gasket ring inner edge spreads out and establishes a circle card eaves, form with the corresponding hook edge of root edge and sliding establish blocking for placing restrictions on ring, and allow and place restrictions on ring and be incorporated into down the inner peripheral surface open side of filling in the flush fit form.

3, headstock bowl group according to claim 1 and 2 is characterized in that: wherein gasket ring is the steel ring plate with the moulding of punching out mode.

4, headstock bowl group according to claim 1 and 2, it is characterized in that: gasket ring wherein is the heat treated metal ring plate.

5, headstock bowl group according to claim 1 and 2 is characterized in that: the card eaves of gasket ring and place restrictions between the hook edge of ring and be installed with narrow and small gap.