CN2447281Y - Improved front fork of bicycle - Google Patents
Improved front fork of bicycle Download PDFInfo
- Publication number
- CN2447281Y CN2447281Y CN 00257711 CN00257711U CN2447281Y CN 2447281 Y CN2447281 Y CN 2447281Y CN 00257711 CN00257711 CN 00257711 CN 00257711 U CN00257711 U CN 00257711U CN 2447281 Y CN2447281 Y CN 2447281Y
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- Prior art keywords
- front fork
- pin
- vertical tube
- bicycle
- nut component
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Abstract
The utility model relates to an improved front fork of a bicycle, fork foot fixed holes for the insertion of two front fork feet are arranged at a joining position of a front fork shoulder and the two front fork feet, and insertion ends are respectively arranged at the top ends of the two front fork feet, the two front fork feet are provided with the conicity matched with the two fork foot fixed holes and are inserted into the fixed holes positioned on the two fork feet. Two screw cap members are arranged at the top ends of the two front fork feet, the center has an inner screw hole, two screws are locked into the two screw cap members, and the insertion ends of the two front fork feet are fixed in the two fork foot fixed holes. The utility model has the efficacy of convenient combination, rapid production, firm structure, convenient production and sale distribution operation and is not easy to deform.
Description
The utility model is a kind of bicycle front fork of improvement, and being meant does not especially a kind ofly need to weld, restraints and connect, glue together or the bicycle front fork structure of the improvement that mode such as riveted joint makes up.
As everyone knows, bicycle front fork is considerable structure in the vehicle frame of bicycle, its significant feature is the device front-wheel, and provide the effect of front-wheel steering, and have more the structure of Shock absorber at the employed front fork of car type of the senior mountain-climbing car of a new generation, therefore make the structure complexity more of bicycle front fork.
Because bicycle front fork is when bicycle is advanced, must bear the weight of bicycle and rider's health, and also to bear the vibrations that contact with uneven ground when front-wheel travels, therefore the front fork of bicycle must possess good intensity is arranged, and causes the danger of bicycle overturning to prevent front fork from fractureing.In addition, in order to keep the stability of bicycle running and handling maneuver, bicycle front fork must have splendid size and angle accuracy, so that the front-wheel of bicycle can be by device in correct position and angle.
Bicycle front fork commonly used can be divided into: welded type, brazing formula and knockdown structure substantially according to its combined method.Figure 6 shows that a kind of structure of welded type bicycle front fork commonly used, wherein mainly comprise: a vertical tube 1 can be installed in the preceding perpendicular cover of cycle frame by the ball dish, and the top is connected with the front handlebar of bicycle; One front fork shoulder 2 is installed on the bottom of this vertical tube 1; Two front fork pin 3 are installed on two ends of this front fork shoulder 2, and the front vehicle wheel of bicycle can be installed in the bottom of this two front forks pin 3, this bicycle front fork device can be erected in the cover before the vehicle frame of bicycle by this vertical tube 1, and make front-wheel to turn to.Its major defect is: the bicycle front fork of this welded type is to adopt hydrogen brazing or CO
2Welding manner directly is welded, however because hydrogen brazing or CO
2Welding must can enough be finished by the workman who is skilled in technique, and because welding is quite consuming time, and make speed of production slow, so its manufacturing cost is quite expensive, simultaneously, because hydrogen brazing or CO
2High heat can be produced during welding, so distortion can be produced after making the front fork welding finish, so shape and the angle that must further proofread and correct this bicycle front fork again, to keep the particularity of its size and shape angle, more increase its manufacturing cost.
The structure that is to use the bicycle front fork that the brazing mode makes up shown in Figure 7, it has vertical tube 1A, front fork shoulder 2A and front fork pin 3A equally, this front fork shoulder 2A is with the metal sheet punching press, and then engage to make in the brazing mode and form, and behind this two front fork pin 3A and this front fork shoulder 2A fit, also be to weld in the brazing mode to combine, so its production program must consume a large amount of manpowers too, and produce time and effort consuming; And the bicycle front fork of this kind brazing mode, after welding is finished, also have the problem of distortion, therefore need further to proofread and correct its size and shape too.
In addition, the bicycle front fork that part is arranged is with gummed mode or rivet combination mode fixedly the front fork pin and the vertical tube of front fork shoulder and bicycle, the mode that engages of viscose glue wherein, and it must use special and expensive solid joint, and after long-time the use, viscose glue comes off easily and loses effectiveness; And be to use rivet to combine between the front fork of rivet connection mode shoulder and the vertical tube, but with the fixing bicycle front fork of this kind method combination, the situation that has the vertical tube dandle takes place.Therefore it is unsatisfactory to make up its effect of fixing bicycle front fork in these two kinds of modes.
Figure 8 shows that a kind of structure of tightening the bicycle front fork of formula, wherein the front fork of this bicycle front fork shoulder 2B normally forms with the aluminum alloy manufacturing, its central authorities have a hole and insert for vertical tube 1B, and two ends of front fork shoulder 2B are respectively arranged with a fork pin fixed orifice that can supply the front fork pin to insert, the pin fixed orifice of front fork shoulder 2B and the diameter in vertical tube hole are the diameters that is slightly larger than front fork pin and vertical tube, and are cut with joint-cutting 4B, a 5B, 6B respectively on the next door in two front fork pin fixed orifices and vertical tube hole.After front fork pin and vertical tube are inserted into vertical tube hole and front fork pin fixed orifice, can with this front fork shoulder 2B packing, make the width of joint-cutting diminish by several screws, and make and therefore vertical tube and front fork pin are tightly clamped the reduced in pin fixed orifice and vertical tube hole.This kind tightened the bicycle front fork of formula, because front fork shoulder is gone up the screw hole that must be provided with more than at least 6, so it must carry out the boring of multiple tracks, the work of cover tooth, and make its work programme complicated and consuming time when making on the front fork shoulder.Must use appreciiable screw during its assembling simultaneously, therefore make the local trouble of its stack-mounted working phase and expend time in,
Because more than, the suitable waste of manpower of production work of bicycle front fork commonly used and consuming time, and its productive costs costliness.In addition, above-mentioned bicycle front fork various commonly used is except the shortcoming of producing difficulty, cost costliness, vertical tube after its production is finished, front fork shoulder and front fork pin fixed combination are together, and can't dismantle, therefore when will being transported to the finished product of bicycle front fork the bicycle maquila, the manufacturer that produces bicycle front fork assembles, or when being transported to the selling spot, can be very easy to make the shape and the size distortion of front fork because of collision, and cause the generation of defective products.And in the process of transporting, whole bicycle front fork considerably accounts for volume, has therefore caused the difficulty of transporting and storing.
At above-mentioned defective, the inventor is engaged in the experience of Related product research for many years through active research chronically, and through constantly test and improvement, creates the technical solution of the utility model finally.
Main purpose of the present utility model is to provide a kind of bicycle front fork of improvement, overcomes the drawback of prior art, reaches combined and instant, produces purpose rapidly.
Another purpose of the present utility model is to provide a kind of bicycle front fork of improvement, and it is firm to reach structure, and on-deformable purpose.
Another purpose of the present utility model is to provide a kind of bicycle front fork of improvement, makes it transport and to store in the half-blank mode, reaches the purpose of convenient production and distribution operation.
The purpose of this utility model is achieved in that a kind of bicycle front fork of improvement, comprise the front fork shoulder and be arranged at front fork and take on the vertical tube of central authorities top and be arranged at the two front fork pin that this front fork is takeed on two ends below, it is characterized in that: this front fork shoulder and this two front forks pin engage position, be respectively arranged with the fork pin fixed orifice that inserts for this two front forks pin, it is conical that this y-bend pin fixed orifice is; This two front forks pin top is respectively arranged with an insertion end, and it has the tapering that cooperatively interacts with this y-bend pin fixed orifice, inserts to be positioned in this y-bend pin fixed orifice; Two nut components are arranged at this two front forks pin top, and its central authorities have inner bolt hole; Two-screw is locked within this two nut component, and the insertion end of this two front forks pin is fixed in this y-bend pin fixed orifice.
This front fork is takeed on the position that penetrates this fork pin fixed orifice in this two-screw, is respectively equipped with recess, to hold the head of this two-screw.This nut component is sheathed on the inside on this front fork pin top.The arranged outside of this nut component has at least one recess, and is provided with the engaging salient point that at least one engages with this recess in this front fork pin top with the position that this recess is aimed at.This nut component is sheathed on the top of this front fork pin.Central authorities and this vertical tube engage position of this front fork shoulder are provided with and are the poroid vertical tube hole of taper shape; The end that this vertical tube bottom and this front fork shoulder grafting close is provided with the insertion end of inserting in this vertical tube hole; This insertion end has and this vertical tube hole tapering of containing of interworking mutually; Nut component is arranged at the insertion end of this vertical tube, and these nut component central authorities have a negative thread, locks this nut component by a screw and this insertion end is fixed among this vertical tube hole.This front fork is takeed on the position that penetrates this vertical tube hole in this screw, is provided with recess, to hold this head in order to the screw of fixing this vertical tube.
The utility model major advantage be have combined and instant, produce rapidly, structure is firm, not yielding, convenient effect of producing with the distribution operation.
Be described in detail as follows below in conjunction with preferred embodiment and accompanying drawing.
Fig. 1 is a local combination cross-sectional schematic of the present utility model.
Fig. 2 is a decomposition cross-sectional schematic of the present utility model.
Fig. 3 is the cross-sectional schematic of the front fork pin of embodiment 2 of the present utility model.
Fig. 4 is the cross-sectional schematic of the front fork pin of embodiment 3 of the present utility model.
Fig. 5 is the combination cross-sectional schematic of embodiment 4 of the present utility model.
Fig. 6 is the front-view schematic diagram of the welded type automatic shock-proof front fork used always.
Fig. 7 is the front elevation of the brazing formula bicycle front fork used always.
Fig. 8 is the rear view of the formula of the tightening automatic shock-proof front fork used always.
Consult Figure 1 and Figure 2, structure of the present utility model mainly comprises: a vertical tube 10, front fork shoulder 20 and two front fork pin 30.The central authorities of this front fork shoulder 20 have opening vertical tube hole 21 up, use bottom to be inserted in wherein for this vertical tube 10, and its two end has a downward opening fork pin fixed orifice 22 respectively, use top to be inserted in wherein for this two front forks pin 30, it is main to be characterised in that this y-bend pin fixed orifice 22 is to be the tapered bore that slightly has degree of dip, and the top of front fork pin 30 is respectively arranged with the coniform insertion end 31 that an internal taper with this y-bend pin fixed orifice 22 cooperatively interacts, this insertion end 31 is can be inserted in this fork pin fixed orifice 22, and cooperatively interact by the external taper of this insertion end 31 internal taper with fork pin fixed orifice 22, and this two front forks pin 30 is positioned the position aimed at mutually with the central axis of this y-bend pin fixed orifice 22.
And the top in the insertion end 31 of this two front forks pin 30 is provided with a nut component 32, and this nut component 32 has a negative thread 33; Simultaneously take on 20 2 ends in this front fork and be respectively arranged with a screw hole 23 in the top of this y-bend pin fixed orifice 22, this screw hole 23 is to aim at mutually with the negative thread 33 of this two nut component 32; And two screws 40, be to insert from this screw hole 23, and locking among this two negative thread 33, is this two front forks pin 30 can be locked in this y-bend pin fixed orifice 22 by this two-screw 40, therefore makes this front fork pin 30 take on 20 secure bond together with front fork.
In the present embodiment, employed nut component 32 is to be a metal cock body, and it is the inside that directly is sleeved on these front fork pin 30 tops.The insertion end 31 on these front fork pin 30 tops is to be the taper shape that the top dwindles, so the shape of this nut component 32 also is made into the shape with the inside fit of this insertion end 31.As shown in Figure 1, in this front fork pin 30 is inserted in fork pin fixed orifice 22, and by screw 40 during with nut component 32 lockings, this nut component 32 is the restrictions that can be subjected to this insertion end 31, and can't separate with the top of this front fork pin 30.Therefore, when screw 40 lockings, can therefore make these two front forks pin, 30 tops firmly be fixed in this y-bend pin fixed orifice 22 of the inside packing of this nut component 32 towards fork pin fixed orifice 22.
In addition, the vertical tube 10 that present embodiment uses and front fork take on 20 can also use the fixing means identical with aforementioned front fork pin 30, the vertical tube hole 21 that these front fork shoulder 20 central authorities engage with vertical tube 10 is to be cylindrical-conical endoporus, and an end of this vertical tube 10 and these vertical tube hole 21 fits be provided with one can with the insertion end 11 of these vertical tube hole 21 fits, be to be provided with a nut component 12 in this insertion end 11, this nut component 12 is provided with a negative thread 13, and be provided with a screw hole 24 in the bottom in this vertical tube hole 21, shown in Fig. 2, after in vertical tube 10 is inserted into this vertical tube hole 21, be to be locked into this negative thread 13 from this screw hole 24 by a screw 40, and this vertical tube 10 is fixed in this vertical tube hole 21.
For making that vertical tube 10 can accurately be positioned it when assembling and front fork is takeed on 20 relative angular position, offer a grooving 111,122 in the insertion end 11 of vertical tube 10 bottoms and the bottom of nut component 12, and be provided with two projections 212 that can engage with grooving 111,122 relative positions with grooving 111,122 in 21 bottoms, vertical tube hole, therefore engage mutually with grooving 111,122 by projection 212, just can accurately locate the relative angle of vertical tube 10 and front fork shoulder 20, and economize the follow-up adjustment of common structure assembling and the work of correction of removing.
Consult shown in Figure 3, in the present embodiment, arranged outside in this nut component 32 has at least one recess 34, and be provided with the engaging salient point 35 that at least one can engage with this recess 34 with the position that this recess 34 is aimed in these front fork pin 30 tops, when this nut component 32 is tucked into these front fork pin 30 tops, be to engage salient point 35 by this to engage with this recess 34, further fix this nut component 32 and reach, and make when front fork pin 30 makes up with front fork shoulder 20, this nut component 32 can not drop, front fork pin 30 was takeed on 20 o'clock with front fork so that organize a performance, and can easily screw 40 be locked among the nut component 32.
Consult shown in Figure 4, in the present embodiment, the top of this front fork pin 30 is different from embodiment 1 and 2, and its employed nut component 32A is the top that is inserted in front fork pin 30 from the top of this front fork pin 30, and by brazing mode and this front fork pin 30 fixed engagement together.The top of this nut component 32A is to be the taper shape that can cooperatively interact with aforementioned fork pin fixed orifice 22, therefore form the insertion end 31 of this front fork pin 30, and can insert and be fixed in this fork pin fixed orifice 22, this nut component 32A is fixed in this fork pin fixed orifice 22 by screw 40.
The nut component 32A of present embodiment 3 cooperatively interacts with fork pin fixed orifice 22, can reach the purpose of front fork pin 30 and front fork being takeed on 20 secure bond equally, but the top of front fork pin 30 is to be straight cylindric, therefore do not need to carry out the work of the draw, so can save the program of one making, reduce manufacturing cost.
It must be emphasized that at this: though the foregoing description 2 and embodiment 3 are fixed forms with front fork pin 30 and front fork shoulder 20 is the example explanation, and its employed structure can be applied on the nut component 12 of vertical tube 10 equally.
Embodiment 4
Consult shown in Figure 5, in the present embodiment, its fork pin fixed orifice 22, vertical tube hole 21 are positions of locking in screw 40, be provided with recess 221 and 211, and be provided with an accommodation section 321 in this nut component 32, and also be provided with an accommodation section 121 on this nut component 12, in order to hold this recess 221 and 211.This recess 221 and 211 effect are in order to hold the head of this screw 40, so that during screw 40 locking, the head of this screw 40 can be hidden among this recess 221 and 211, and can not expose, with the moulding attractive in appearance of the overall appearance of keeping bicycle front fork.
In sum, the utility model is by said method fixedly front fork pin 30 and front fork shoulder 20 and vertical tube 10, its biggest advantage is can to cooperatively interact with the female cone of pitching pin fixed orifice 22 and vertical tube hole 21 by the outer cone of insertion end 31,11 for this front fork pin 30 and front fork shoulder 20, vertical tube 10, and reach the purpose of self-orientation, when therefore it makes up, only front fork pin 30 and vertical tube 10 need be inserted in fork pin fixed orifice 22 and the vertical tube hole 21, with screw 40 lockings, just can finish the work of front fork pin 30, vertical tube 11 and 20 combinations of front fork shoulder again.Therefore, bicycle front fork structure of the present utility model is than the welded type commonly used and the bicycle front fork of brazing formula, the work of its combination can avoid adopting complicated welding method, and the artificial expenditure that can save expensive engineering worker, production program is more quick, and it is than knockdown bicycle front fork commonly used, its needs are locked the work in combination that two screws 40 just can be finished bicycle front fork simply, therefore its production program is simplified more, and more rapid
In addition, when bicycle front fork of the present utility model makes up, exempt welding procedure fully, therefore bicycle front fork can be because of the welding temperature distortion, can economize the work of afterwards correcting distortion that removes, therefore make production program more simplify, and obtain good size and shape degree of precision.Simultaneously, front fork pin 30 of the present utility model, 20 simple programs of needs of vertical tube 10 and front fork shoulder just can promptly make up, after front fork pin 30, front fork shoulder 20 are finished with vertical tube 10 manufacturings, can not need to combine in advance, but this front fork pin 30, front fork shoulder 20 are transported to the maquila of bicycle or sell the place with vertical tube 10, again it is combined as a single-piece bicycle front fork.Institute is so that this uses later-model bicycle front fork when transporting or store, can pack in the mode of half-finished parts, and can save the space conveniently transporting and to store operation, and can avoid in the process of transporting producing distortion because each front fork collides mutually.
Claims (7)
1, a kind of bicycle front fork of improvement, comprise the front fork shoulder and be arranged at front fork and take on the vertical tube of central authorities top and the two front fork pin that this front fork is takeed on two ends below are set, it is characterized in that: this front fork shoulder and this two front forks pin engage position, be respectively arranged with the fork pin fixed orifice that inserts for this two front forks pin, it is conical that this y-bend pin fixed orifice is; This two front forks pin top is respectively arranged with an insertion end, and it has the tapering that cooperatively interacts with this y-bend pin fixed orifice, inserts to be positioned in this y-bend pin fixed orifice; Two nut components are arranged at this two front forks pin top, and its central authorities have inner bolt hole; Two-screw is locked within this two nut component, and the insertion end of this two front forks pin is fixed in this y-bend pin fixed orifice.
2, the bicycle front fork of improvement as claimed in claim 1 is characterized in that: this front fork is takeed on the position that penetrates this fork pin fixed orifice in this two-screw, is respectively equipped with recess, to hold the head of this two-screw.
3, the bicycle front fork of improvement as claimed in claim 1 is characterized in that: this nut component is sheathed on the inside on this front fork pin top.
4, the bicycle front fork of improvement as claimed in claim 3 is characterized in that: the arranged outside of this nut component has at least one recess, and is provided with the engaging salient point that at least one engages with this recess in this front fork pin top with the position that this recess is aimed at.
5, the bicycle front fork of improvement as claimed in claim 1 is characterized in that: this nut component is sheathed on the top of this front fork pin.
6, the bicycle front fork of improvement as claimed in claim 1 is characterized in that: central authorities and this vertical tube engage position of this front fork shoulder are provided with and are the poroid vertical tube hole of taper shape; The end that this vertical tube bottom and this front fork shoulder grafting close is provided with the insertion end of inserting in this vertical tube hole; This insertion end has and this vertical tube hole tapering of containing of interworking mutually; Nut component is arranged at the insertion end of this vertical tube, and these nut component central authorities have a negative thread, locks this nut component by a screw and this insertion end is fixed among this vertical tube hole.
7, the bicycle front fork of improvement as claimed in claim 6 is characterized in that: this front fork is takeed on the position that penetrates this vertical tube hole in this screw, is provided with recess, to hold this head in order to the screw of fixing this vertical tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00257711 CN2447281Y (en) | 2000-10-30 | 2000-10-30 | Improved front fork of bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00257711 CN2447281Y (en) | 2000-10-30 | 2000-10-30 | Improved front fork of bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2447281Y true CN2447281Y (en) | 2001-09-12 |
Family
ID=33614163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00257711 Expired - Fee Related CN2447281Y (en) | 2000-10-30 | 2000-10-30 | Improved front fork of bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2447281Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103171719A (en) * | 2013-04-17 | 2013-06-26 | 昆山智科五金制品有限公司 | Bicycle front fork |
| ITVA20130011A1 (en) * | 2013-02-19 | 2014-08-20 | Alessandro Vladimir Zeleznik | STEERING SYSTEM FOR VEHICLES ON WHEELS |
| CN105523131A (en) * | 2015-10-26 | 2016-04-27 | 蔡明达 | Integrated wire-controlled mechanism and assembling method thereof |
-
2000
- 2000-10-30 CN CN 00257711 patent/CN2447281Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITVA20130011A1 (en) * | 2013-02-19 | 2014-08-20 | Alessandro Vladimir Zeleznik | STEERING SYSTEM FOR VEHICLES ON WHEELS |
| CN103171719A (en) * | 2013-04-17 | 2013-06-26 | 昆山智科五金制品有限公司 | Bicycle front fork |
| CN105523131A (en) * | 2015-10-26 | 2016-04-27 | 蔡明达 | Integrated wire-controlled mechanism and assembling method thereof |
| CN105523131B (en) * | 2015-10-26 | 2017-11-21 | 蔡明达 | Integral type line traffic control mechanism and its assemble method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |