CN104494766A - Front fork and bicycle employing same - Google Patents
Front fork and bicycle employing same Download PDFInfo
- Publication number
- CN104494766A CN104494766A CN201410817053.2A CN201410817053A CN104494766A CN 104494766 A CN104494766 A CN 104494766A CN 201410817053 A CN201410817053 A CN 201410817053A CN 104494766 A CN104494766 A CN 104494766A
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- China
- Prior art keywords
- fork
- front fork
- vertical tube
- pin
- leg
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K21/00—Steering devices
- B62K21/02—Front wheel forks or equivalent, e.g. single tine
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Steering Devices For Bicycles And Motorcycles (AREA)
- Axle Suspensions And Sidecars For Cycles (AREA)
Abstract
The invention discloses a front fork and a bicycle employing same. The front fork is applied to the fields of vehicles such as bicycles, scooters and motorcycles, and is divided into a left fork leg and a right fork leg along a riser, so that the front fork can be connected into a whole after being integrally forged, a conventional front fork welding process is changed, the phenomena of undercutting, overlap, slag inclusion, burning-through, formation of air holes and cracks, track weld and the like during the welding of the front fork are avoided on the basis of realizing conventional functions of the front fork of the bicycle, the size of the front fork is reduced, the strength of the front fork is strengthened, the front fork is simple in structure, the machining flow is simplified, and the labor cost is correspondingly lowered.
Description
Technical field
The present invention relates to a kind of vehicle body fittings, particularly relate to for connecting a kind of front fork of wheel hub and vehicle frame and applying the bicycle of this front fork.
Background technology
Front fork is the critical component for connecting wheel hub and vehicle frame, comprises vertical tube and the fork pin welded with vertical tube, and fork pin is that U-shaped body both wings are respectively left fork pin and right fork pin, and fork toe end hooks pawl, and fork pin also can weld disc brake base, plumb-line seat etc.In bicycle manufacturing, front fork all takes soldering group to found technique, there is the phenomenon such as pore, dry joint in conventional bonding technique, high temperature during this external welding can affect the molecular-crystalline structure of soldered metallic material, the aluminum products of welding need do the modulation of T4, T6 solid solution aging, remove the internal stress of weldment, molecule crystallographic texture rearranges, and the material of the material of welding rod and soldered thing will there will be inhomogeneous molecule, the defect that seam area causes to make up insufficient strength can only be strengthened, thus add weight and outward appearance is smooth not, attractive in appearance.Traditional welding front fork, easily there is undercut, overlap, slag inclusion, burn, produce pore, crackle, also easily occur lack of penetration or do not merge, during this external welding, weldment is subject to uneven patterned heat and cooling accident produces welding deformation, and during welding, stronger radiation is produced to human body, have a strong impact on the healthy of workman.
Summary of the invention
The main technical problem to be solved in the present invention is, provide a kind of front fork and apply the bicycle of this front fork, it reduces work flow, cuts down finished cost.
For solving the problems of the technologies described above, the invention provides a kind of front fork, comprising left fork pin, right fork pin, left vertical tube, right vertical tube, described left fork pin and left vertical tube, right fork pin and right vertical tube are respectively one forging molding structure; Described left fork pin and left vertical tube one are forged and are formed left fork leg, and described right fork pin and right vertical tube one are forged and formed right fork leg; Described left fork leg and right fork leg form complete front fork by riser portions compact siro spinning technology.
Described left fork pin and right fork pin are provided with groove at forward surface, are provided with at the bottom of link slot and the strengthening rib strip of cell wall in this groove.
Described left fork leg is connected by least two holding screws with left fork leg.
Also include the fastening steady ring of structure in the form of a ring, after described left fork leg and right fork leg compact siro spinning technology, this fastening location ring set is located at the periphery of left fork leg and right fork leg split body.
Corresponding described holding screw has been respectively equipped with the guide pillars and bushes of guide-localization effect in described left vertical tube, right vertical tube, on described right vertical tube, corresponding described guide pillar position is provided with screw hole, and described holding screw embeds this screw hole makes guide pillars and bushes coordinate location by screw thread fit.
Described fastening steady ring is arranged at described vertical tube and joins position with fork pin, has at least a described holding screw to be arranged on the fitting surface place of fastening steady ring and vertical tube.
Described right fork leg is also provided with hook pawl and/or the plumb-line seat of one forging molding.
Described left fork leg is also provided with the hook pawl of one forging molding, disc brake base and/or plumb-line seat.
After described left vertical tube is connected with described right vertical tube, there is the outer face in cylindrical-shaped structure.
The present invention also provides a kind of bicycle, and it includes a kind of front fork as the aforementioned.
The invention has the beneficial effects as follows: a kind of front fork and apply the bicycle of this front fork, it is by being divided into left fork leg and right fork leg by front fork along vertical tube, complete front fork is connected into again after realizing one forging, change traditional welding front fork technique, the original function basis of bicycle front fork avoiding undercut, overlap, the slag inclusion of welding front fork when welding, burning, producing the phenomenons such as pore, crackle, dry joint possessing, reduce front fork volume simultaneously, improve the intensity of front fork, structure simply, decrease work flow, correspondence reduces artificial cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of embodiment of front fork of the present invention;
Fig. 2 is the sectional structure schematic diagram of Fig. 1;
Fig. 3 is the exploded view of Fig. 1;
Fig. 4 is the perspective view of Fig. 1.
Detailed description of the invention
By reference to the accompanying drawings the present invention is described in further detail below by detailed description of the invention.
A kind of front fork of the present invention, shown in Fig. 4, comprises left fork pin 201, right fork pin 101, left vertical tube 202, right vertical tube 102, and described left fork pin 201 is respectively one forging molding structure with left vertical tube 202, right fork pin 101 with right vertical tube 102; Described left fork pin 201 forges with left vertical tube 202 one and forms left fork leg 2, and described right fork pin 101 forges with right vertical tube 102 one and forms right fork leg 1; Described left fork leg 2 forms complete front fork with right fork leg 1 by riser portions compact siro spinning technology.The present invention reduces front fork weight on the reservation original function basis of bicycle front fork, more there is relief non-tubular shape integral type welding front fork simultaneously, realize material use and maximize, add the anchoring strength of front fork, reduce manufacturing man-hours, reduce manufacturing cost and cost of labor.
During enforcement, with reference to shown in Fig. 2, be provided with groove at left fork pin 201 and right fork pin 101 at forward surface, be provided with at the bottom of link slot in this groove and the strengthening rib strip of cell wall.Groove can save forged material, can ensure structural strength by making up of strengthening rib strip.
Embodiment as shown in Figure 2 and Figure 4, left fork leg 2 upper groove 209 adopts the inwall line that can adopt arc structure, also can ensure that save material ensures that left fork pin 201 has enough intensity simultaneously, strengthening rib strip 205 is arranged along the distribution of moving towards of groove 209, elongated slot is divided into multiple short groove.
During enforcement, with reference to shown in Fig. 2, Fig. 3, holding screw 4 can be connected by two holding screws 4.Determine a line at 2, therefore two holding screws 4 can ensure the steadiness that connects.Certainly, more holding screw 4 can be used when enforcement, realize compact siro spinning technology.
During enforcement, shown in Fig. 4, also include the fastening steady ring 4 of structure in the form of a ring, after described left fork leg 2 and right fork leg 1 compact siro spinning technology, this fastening steady ring 4 is set in the periphery of left fork leg 2 and right fork leg 1 split body.Ensure that left fork leg 2 cannot be separated with right fork leg 1.There is the existence of fastening steady ring 4, even if do not have other to be connected between left fork leg 2 with left fork leg 1, also can not mutually depart from.
During enforcement, the locate mode of fastening steady ring 4 can coordinate the connection mode one of aforementioned holding screw 4 to reinstate, also can be coordinate left vertical tube 202 simultaneously or separately, right fork pin 101 welds, clamping, riveted joint, etc. mode use.
During enforcement, with reference to shown in Fig. 2, Fig. 3 and Fig. 4, corresponding holding screw 4 has been respectively equipped with guide pillar 103 and the guide pin bushing 203 of guide-localization effect in left vertical tube 202, right vertical tube 102, and on right vertical tube 102, corresponding described guide pillar 103 position is provided with screw hole 104.Holding screw 4 embeds this screw hole 104 makes guide pillar 103 and guide pin bushing 203 coordinate location by screw thread fit.The setting of guide pillar 103 and guide pin bushing 203, ensure that left vertical tube 202 and right vertical tube 102 aligned position coordinate, can ensure that holding screw 4 screws simultaneously, guide pillar 103 and guide pin bushing 203 leave gap at the fitting surface in holding screw 4 precession direction, be combined together to ensure that left vertical tube 202 and right vertical tube 102 outer face are closely firm.
Embodiment as shown in Figure 2, is provided with two holding screw 4 correspondences and also arranges two cover guide pillars 103 and guide pin bushing 203.
During enforcement, shown in Fig. 1 Fig. 2, fastening steady ring 4 is arranged at vertical tube (left vertical tube 202, right vertical tube 102) and joins position with fork pin (left fork pin 201, right fork pin 101), like this can the left vertical tube of maximized guarantee 202, relative position firm between right vertical tube 102, fastening steady ring 4 only has an activity direction simultaneously.
During enforcement, shown in Fig. 1 Fig. 2, when the aforementioned locate mode fastening a ring 4 adopts together with the connection mode of aforementioned holding screw 4.Can allow the fitting surface place having at least a holding screw 4 to be arranged on fastening steady ring 4 and vertical tube.Cover holding screw 4 by fastening steady ring 4, play and prevent holding screw 4 from deviating from, cause the problem that left vertical tube 202, right vertical tube 102 are separated.Because the environment for use of vehicle, often have the various factors such as vibrations that holding screw 4 can be caused to get loose, now this point patterns just seems particularly important.
During enforcement, with reference to shown in Fig. 4, right fork leg 1 also can be provided with hook pawl 106 and/or the plumb-line seat 107 of one forging molding.
During enforcement, with reference to shown in Fig. 4, corresponding aforementioned, left fork leg 2 also can be provided with the hook pawl 206 of one forging molding, disc brake base 208 and/or plumb-line seat 207.
During enforcement, with reference to shown in Fig. 4, after left vertical tube 202 is connected with right vertical tube 102, there is the outer face in cylindrical-shaped structure.Because the riser portions of front fork is the turning cylinder of handlebar, therefore it is necessarily arranged usually, can refer to prior art specification, to arranging flexibly herein, such as vertical tube band tap web face, multiple cylinder superposition face etc.Certain vertical tube is not set to cylindrical, but adopts cuboid or irregularly shaped, and the outside cover arranging bearing again or have a cylindrical outside is carried and being also fine.
The invention process front fork can adopt aluminum alloy material.
During the invention process application, dress disc brake and/or left and right brake holding structure can be set to.
A kind of front fork of the present invention, can be applicable to the manufacture fields such as bicycle, Kickboard Scooter, motor bike, automobile.
A kind of bicycle of the present invention, shown in Fig. 4, its application has aforesaid a kind of front fork.
During enforcement, also include vehicle frame, described vehicle frame is provided with the auxiliary section of band cylindrical bore, and the vertical tube kink that described left vertical tube 202, right vertical tube 102 split are formed is arranged among this auxiliary section.
Welding front fork of the present invention, adopts pure forging to integrally combine the function of formula, thus adds the intensity of 100% than traditional welding front fork.Forging front fork outward appearance is smooth, structure is simple, intensity is high, lightweight, inwall reinforcement toughness and strength enhancing, forging can dot weld adapter material cannot in the defect of same arbitrary side vertical direction, can according to cycling time, brake or when impacting moment force of inertia, act on front fork, the load because of tube wall needs to increase load and must meet requirement of strength not.And welded pipe front fork cannot meet above defect, and forging suitably can must reinforced at inwall and can smootherly extend in the afterburning place reinforced, the moment impact of dispersion opposing force of inertia, can promote the safety of the personnel of riding greatly, thus reaches happy, healthy, safe to ride.
As Fig. 2, 3, shown in 4, front fork of the present invention utilizes left fork pin 201 to add left vertical tube 202 and right fork pin 101 to add right vertical tube 102 and mutually combine and be integrally formed formula front fork, the vertical tube place of left fork leg 2 and the vertical tube place of right fork leg 1 are furnished with two holding screws 4 simultaneously, be used for fastening left and right fork leg 1, 2, vertical tube 102, fastening steady ring 3 is furnished with bottom 202, be used for strengthening left and right fork leg 1, the anchoring strength of 2, strengthen safety performance, and left and right fork leg 1, 2 adopt the pure Forging Technology of non-tubular shape, in left and right fork leg 1, 2 places add the plumb-line seat 107 of one forging combination, 207 and disc brake base 208, be supplied to client more to select, more safe and convenient.
The invention belongs to bicycle front fork upgrading and improve, when having broken traditional welding, bicycle front fork improvement is pure Forging Technology, pitch fastening steady ring and holding screw etc. by left and right pin to form, be furnished with and hook pawl, messenger wire permanent seat and disc brake base, welding adds 100% ~ 200% than front fork intensity during traditional welding, adopt non-tubular shape pin fork in weight, to alleviate 10% ~ 15% than traditional welding formula front fork, add modelling effect.Pure forging one front fork is brief and remarkable, saves the working procedures of front fork hook pawl, front fork tube, disc brake base, brake mount, spindle tube five kinds of accessory welding.
Front fork of the present invention is at design aspect, and front fork redesigns upgrading.This time design by left and right pitch pin 101,201, fastening steady ring 3 and holding screw 4 etc. form, be furnished with hook pawl 106,206, messenger wire permanent seat 107,207 and disc brake base 208.Simultaneously left and right pin fork 1,2, merges and is furnished with holding screw 4 together, then mix fastening steady ring 3, adds the stability of front fork and intensity, safety.In manufacture technics, adopt and combine without any welding, directly one-body molded by forging, then cnc numerical control machining again after being T4, T6, to being combined into one, can directly do anode process, promoting the beautiful, noble of outward appearance.
The present invention solving undercut, overlap, the slag inclusion of traditional welding front fork when welding, burning, producing the phenomenons such as pore, crackle, dry joint, be both the intensity in order to promote front fork, improve stock utilization, meet the social benefit such as safety, economy, re-design novel aluminum alloy forging integrated type front fork.Compare traditional front fork, structure be simple, outward appearance is smooth, intensity is high, lightweight, toughness and strength enhancing, safer and practical.
Above content is in conjunction with concrete embodiment further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. a front fork, it is characterized in that, comprise left fork pin (201), right fork pin (101), left vertical tube (202), right vertical tube (102), described left fork pin (201) is respectively one forging molding structure with left vertical tube (202), right fork pin (101) with right vertical tube (102); Described left fork pin (201) is forged with left vertical tube (202) one and is formed left fork leg (2), and described right fork pin (101) is forged with right vertical tube (102) one and formed right fork leg (1); Described left fork leg (2) and right fork leg (1) form complete front fork by riser portions compact siro spinning technology.
2. front fork as claimed in claim 1, it is characterized in that, described left fork pin (201) and right fork pin (101) are provided with groove at forward surface, are provided with at the bottom of link slot and the strengthening rib strip of cell wall in this groove.
3. front fork as claimed in claim 1, is characterized in that, described left fork leg (2) is connected by least two holding screws (4) with left fork leg (1).
4. front fork as claimed in claim 3, it is characterized in that, also include the fastening steady ring (4) of structure in the form of a ring, after described left fork leg (2) and right fork leg (1) compact siro spinning technology, this fastening steady ring (4) is set in the periphery of left fork leg (2) and right fork leg (1) split body.
5. front fork as claimed in claim 3, it is characterized in that, corresponding described holding screw (4) has been respectively equipped with guide pillar (103) and the guide pin bushing (203) of guide-localization effect in described left vertical tube (202), right vertical tube (102), be provided with screw hole (104) in upper corresponding described guide pillar (103) position of described right vertical tube (102), described holding screw (4) embeds this screw hole (104) makes guide pillar (103) and guide pin bushing (203) coordinate location by screw thread fit.
6. front fork as claimed in claim 4, is characterized in that, described fastening steady ring (4) is arranged at described vertical tube and joins position with fork pin, has at least a described holding screw (4) to be arranged on the fitting surface place of fastening steady ring (4) and vertical tube.
7. the front fork as described in any one of claim 1 to 6, is characterized in that, described right fork leg (1) is also provided with hook pawl (106) and/or the plumb-line seat (107) of one forging molding.
8. the front fork as described in any one of claim 1 to 6, is characterized in that, described left fork leg (2) is also provided with the hook pawl (206) of one forging molding, disc brake base (208) and/or plumb-line seat (207).
9. the front fork as described in any one of claim 1 to 6, is characterized in that, after described left vertical tube (202) is connected with described right vertical tube (102), has the outer face in cylindrical-shaped structure.
10. a bicycle, is characterized in that, includes a kind of front fork as described in any one of claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410817053.2A CN104494766A (en) | 2014-12-25 | 2014-12-25 | Front fork and bicycle employing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410817053.2A CN104494766A (en) | 2014-12-25 | 2014-12-25 | Front fork and bicycle employing same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104494766A true CN104494766A (en) | 2015-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410817053.2A Pending CN104494766A (en) | 2014-12-25 | 2014-12-25 | Front fork and bicycle employing same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104494766A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106584019A (en) * | 2015-10-20 | 2017-04-26 | 良丰机械股份有限公司 | Manufacturing method of front forked arms and manufacturing method of front fork |
| CN106627940A (en) * | 2017-01-17 | 2017-05-10 | 广州市完美车业有限公司 | Integrated front fork |
| CN113022768A (en) * | 2019-12-09 | 2021-06-25 | 什拉姆有限责任公司 | Bicycle component tube |
| WO2022228593A1 (en) * | 2021-04-29 | 2022-11-03 | Harald Schmid | Bicycle fork |
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| US5181732A (en) * | 1988-07-25 | 1993-01-26 | Look S.A. | Composite bicycle fork |
| US5692764A (en) * | 1993-08-13 | 1997-12-02 | Klein Bicycle Corporation | Bicycle front forks and methods of making same |
| US6049982A (en) * | 1998-05-22 | 2000-04-18 | Tseng; Shao-Chien | Integrated molding method for the front fork of a bicycle |
| CN102303673A (en) * | 2011-06-22 | 2012-01-04 | 苏州诺雅电动车有限公司 | Front fork of bicycle |
| CN203937797U (en) * | 2014-07-12 | 2014-11-12 | 浙江同兴金属锻件有限公司 | The integrated type front fork of Kickboard Scooter |
| CN204323621U (en) * | 2014-12-25 | 2015-05-13 | 深圳市昌威鑫五金科技有限公司 | A kind of front fork and apply the bicycle of this front fork |
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2014
- 2014-12-25 CN CN201410817053.2A patent/CN104494766A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5181732A (en) * | 1988-07-25 | 1993-01-26 | Look S.A. | Composite bicycle fork |
| US5692764A (en) * | 1993-08-13 | 1997-12-02 | Klein Bicycle Corporation | Bicycle front forks and methods of making same |
| US6049982A (en) * | 1998-05-22 | 2000-04-18 | Tseng; Shao-Chien | Integrated molding method for the front fork of a bicycle |
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| CN203937797U (en) * | 2014-07-12 | 2014-11-12 | 浙江同兴金属锻件有限公司 | The integrated type front fork of Kickboard Scooter |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106584019A (en) * | 2015-10-20 | 2017-04-26 | 良丰机械股份有限公司 | Manufacturing method of front forked arms and manufacturing method of front fork |
| CN106627940A (en) * | 2017-01-17 | 2017-05-10 | 广州市完美车业有限公司 | Integrated front fork |
| CN113022768A (en) * | 2019-12-09 | 2021-06-25 | 什拉姆有限责任公司 | Bicycle component tube |
| US11858583B2 (en) | 2019-12-09 | 2024-01-02 | Sram, Llc | Bicycle component tube |
| WO2022228593A1 (en) * | 2021-04-29 | 2022-11-03 | Harald Schmid | Bicycle fork |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150408 |