CN204821939U - Bicycle frame and have this bicycle frame's bicycle - Google Patents
Bicycle frame and have this bicycle frame's bicycle Download PDFInfo
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- CN204821939U CN204821939U CN201520401332.0U CN201520401332U CN204821939U CN 204821939 U CN204821939 U CN 204821939U CN 201520401332 U CN201520401332 U CN 201520401332U CN 204821939 U CN204821939 U CN 204821939U
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Abstract
The utility model provides a bicycle frame and have this bicycle frame's bicycle. Bicycle frame includes first frame, second frame and a plurality of gusset, wherein, the gusset sets up first frame with between the second frame, be used for strengthening first frame with the holding capacity of second frame, first frame the second frame with a plurality of gussets pass through extrusion moulding integrated into one piece, be equipped with the axis installation department on the second frame. Additionally, the utility model also provides a bicycle that has this frame.
Description
Technical field
The present invention relates to the manufacture field of bicycle and accessory thereof, particularly relate to a kind of cycle frame and there is the bicycle of this cycle frame.
Background technology
China is the big country that bicycle is produced and used.For a long time, bicycle is always all as the main walking-replacing tool of people's short range trip in same city.Cycle frame, as the agent structure of bicycle, connects all parts of bicycle, plays extremely important effect in whole bicycle.Along with the development of science and technology, the material of cycle frame also evolves to the lighter material such as aluminum alloy, titanium alloy by traditional cast iron, steel.Bicycle due to aluminum alloy material has the advantages such as light, attractive in appearance, inexpensive, always very popular in recent years.
In prior art, the cycle frame of aluminum alloy material is all linked together by all parts on bicycle with welding process substantially.This technique generally needs the operations such as cutting, distortion, welding, polishing, heat treatment.Major part in these operations needs manually to have come, and is difficult to ensure batch quality conformance; In addition, welding sequence can cause cycle frame itself to produce many welded joints, these welded joints not only rough surface, reduce the intensity of vehicle frame, add structural failure risk point, and welding cost is also higher, to such an extent as to both have impact on the overall appearance of bicycle, also have influence on the safety performance of car load.
Therefore, simple in the urgent need to a kind of manufacturing process, realize mechanization batch manufacturing and the cycle frame manufacture method of low processing cost without the need to welding, easily, and the cycle frame that structural strength is strong, stability is high.
Summary of the invention
In order to overcome the deficiencies in the prior art, the present invention proposes following technical scheme:
According to an aspect of the present invention, provide a kind of cycle frame, this vehicle frame comprises the first framework, the second framework and multiple gusset; Described gusset is arranged between described first framework and described second framework, for strengthening the holding capacity of described first framework and described second framework; Described first framework, described second framework and described multiple gusset are one-body molded by extrusion molding; Described second framework is provided with axis installation portion, and described axis installation portion is for supporting the axis of bicycle.
Preferably, the thickness of described first framework and the second framework is at least 2.5mm.
Preferably, described first framework, the second framework and gusset are made up of Alclad.
According to a further aspect in the invention, provide a kind of bicycle with cycle frame described above, this bicycle also comprises saddle, front fork, axis, crank and pedal; Wherein, described saddle and described front fork are fixed on described cycle frame respectively; Described axis passes the axis installation portion of described cycle frame and is supported on described axis installation portion, and one end of described crank is connected to one end of described axis, and the other end of described crank connects described pedal.
Preferably, described crank comprises crank framework and brace panel; Wherein, described brace panel is arranged on for strengthening the holding capacity of described crank framework in described crank framework, and it is one-body molded that described crank framework and described brace panel pass through extrusion molding.
Preferably, described crank framework and described brace panel are made up of Alclad.
In accordance with a further aspect of the present invention, additionally provide a kind of manufacture method of cycle frame described above, the method comprises: material preparation step, prepares the ingot casting manufacturing described cycle frame; Mold heating step, selects mould to described mold heated; Ingot casting heating steps, cleans the surface of described ingot casting, then heats described ingot casting; Extrusion step, heats extruded tube liner, and sets pressure ram speed; Distraction step, use air-cooled come cooling products but do not quench; Straightening step, measures the leading dimensions of described product and wall thickness dimension to determine extensibility, according to the length setting stretched length of section bar; Sawing step, arranges saw blade feeding and returns speed, carries out sawing to described product, and carries out aft-loaded airfoil to the sawing aft end face of described product.
Preferably, also comprise in described material preparation step railway carriage process is carried out to described ingot casting.
Preferably, described mold heating step makes described mold heated to 480 ~ 520 DEG C, and described mould is kept 8 hours in 480 ~ 520 DEG C;
Preferably, described mold heating step comprises: the heating-up temperature of shear pad is set as 285 ~ 315 DEG C, and described shear pad is kept 1 hour in 285 ~ 315 DEG C.
Preferably, described ingot casting heating steps makes described ingot casting be heated to 480 ~ 520 DEG C, and makes the warming temperature gradient end to end of described ingot casting be 30 DEG C.
Preferably, described extrusion step makes described extruded tube liner be heated to 440 ~ 450 DEG C, and by described pressure ram Speed Setting in the scope of 2.0 ~ 2.5mm/s.
Preferably, described straightening step is carried out when described product is cooled to below 50 DEG C.
Technical scheme provided by the present invention have the following advantages one or more: adopt framed structure section integration extruding-out process to make cycle frame one-shot forming; Manufacturing process is simple, decreases welding sequence compared with standard bicycle vehicle frame; Easily realize do mechanization operation, can greatly enhance productivity and ensure the conformability of product design; Greatly reduce solder joint and the weld line of car load, make vehicle frame not only have excellent structural strength and stability, also have concurrently attractive in appearance.In addition, the vehicle frame for a kind of profile only needs one set of die, reduces die cost; In addition, structure design is more flexible, and vehicle frame section structure can merge multiple design element, is more conducive to the various demands functionally meeting people.
Accompanying drawing explanation
In order to understand object of the present invention, feature, advantage and function better, can with reference to the preferred embodiment shown in accompanying drawing.Reference numeral identical in accompanying drawing refers to identical parts.It should be appreciated by those skilled in the art that accompanying drawing is intended to schematically illustrate each embodiments of the invention, in figure, all parts is not drawn in proportion.
Fig. 1 is the schematic diagram of the cross-sectional plane of cycle frame according to the embodiment of the present invention;
Fig. 2 is for being configured with the structural representation of the bicycle of cycle frame shown in Fig. 1;
Fig. 3 is the flow scheme of cycle frame manufacture method provided by the present invention.
Detailed description of the invention
With reference now to preferred embodiment as shown in the drawings, describe the present invention in detail.For the sake of clarity, parts known in those skilled in the art or structure is not specifically described herein.In addition, although present invention is described in conjunction with specific embodiment, it should be understood that this description is not intended to the present invention to be limited to described embodiment.On the contrary, this description is intended to cover the replacement that can be included in the spirit and scope of the present invention that are defined by the appended claims, improvement and equivalent.It should be appreciated by those skilled in the art, realize the present invention and do not require these all parts, and under without departing from the spirit and scope of the present invention, any change can be made to the type of these parts and layout.
Fig. 1 is the schematic diagram of the cross-sectional plane of cycle frame according to the embodiment of the present invention.As shown in Figure 1, this cycle frame 10 comprises the first framework 101, second framework 102 and multiple gusset 103.Multiple gusset 103 is separately positioned on for strengthening the holding capacity of the first framework 101 and the second framework 102 between the first framework 101 and the second framework 102, and the first framework 101, second framework 102 is one-body molded with multiple gusset 103.Wherein, those skilled in the art, when taking into account the factors such as the mechanical property of vehicle frame entirety, outward appearance, manufacturing cost, can make any design to the distribution of multiple gusset 103.Second framework 102 is provided with axis installation portion 104, and axis installation portion 104 is for supporting the axis of bicycle.Preferably the thickness of the first framework 101 and the second framework 102 is at more than 2.5mm.Preferably, the first framework 101, second framework 102 and gusset 103 are one-body molded by extrusion molding by Alclad 6061T4 material.
Fig. 2 is for being configured with the structural representation of the bicycle of cycle frame shown in Fig. 1.As shown in Figure 2, this bicycle 1 comprises cycle frame 10, saddle 20, front fork 30, axis 40, crank 50 and pedal 60.Wherein, saddle 20 and front fork 30 are fixed on cycle frame 10 respectively.Composition graphs 1 is known, and axis 40 passes the axis installation portion 104 of cycle frame 10 and is supported on this axis installation portion 104, and one end of crank 50 is connected to one end of axis 70, and the other end of crank 50 connects pedal 60.Preferably, crank 50 also can adopt Alclad 6061T4 material to be made by extrusion molding.More preferably, crank 50 comprises crank framework and brace panel, and wherein, brace panel is arranged on for strengthening the holding capacity of crank framework in crank framework, crank framework and brace panel one-body molded.
Fig. 3 is the flow scheme of cycle frame manufacture method provided by the present invention.As shown in Figure 3, the method comprises material preparation step, mold heating step, ingot casting heating steps, patrix step, pan feeding step, extrusion step, distraction step, straightening step, sawing step and packaging step.Below in conjunction with preferred embodiment, key step of the present invention is described in detail.For the sake of clarity, treatment process known in those skilled in the art is not specifically described herein.
Material preparation step: first prepare suitable ingot casting, the ingot casting that the present invention's preferred 6061T4 Alclad material is made.Then, railway carriage process is carried out to ingot casting.After railway carriage process, ingot diameters difference (namely, the difference of ingot casting maximum gauge and ingot casting minimum diameter) be ± 0.5mm, gradient <0.5mm is cut (namely after ingot casting tack, after cut after gradient refers to face work, end face be not absolute upright in ingot casting axis, the distance between most short end and most long end needs to be less than 0.5mm); Length tolerance (that is, expecting the variation range of extrusion ingot length) is ± 5mm, and ingot casting end face center plush copper is cut.Ingot casting after railway carriage process has any surface finish and the effect without defects such as greasy dirt, dust, pit, boss, crackles.
Mold heating step: first select particular mold (such as, the mould of corresponding cycle frame as shown in Figure 1; Those skilled in the art can the structure of flexible design mould according to actual needs), and guarantee free from dust in die cavity to purging in the chamber of mould.Then, by mold heated, be preferably heated to 480 ~ 520 DEG C and at the temperature of 480 ~ 520 DEG C, keep 8 hours; In addition, shear pad heated, preferred heating-up temperature is set as 285 ~ 315 DEG C, and in the scope of 285 ~ 315 DEG C, keep 1 hours.Mould temperature retention time was preferably more than 24 hours.
Ingot casting heating steps: first, cleans ingot casting surface.Then, ingot casting is heated, is preferably heated to 480 ~ 520 DEG C, in addition, preferably make ingot casting end to end warming temperature gradient be 30 DEG C, first material (that is, first is carried out the ingot casting of ingot casting heating) is set to 520 DEG C.Before carrying out subsequent step, ingot casting temperature must be measured, ensure that ingot casting temperature is within Process temperature ranges.
Extrusion step: preferably make extruded tube lining temperature reach 440 ~ 450 DEG C, and by pressure ram Speed Setting in the scope of 2.0 ~ 2.5mm/s.When head material is extruded, observe front-axle beam outlet, prevent product to scratch shear pad, front-axle beam etc.In extrusion, the quality on extruded product surface be checked, thus ensure smooth surface, longitudinal impression without feel, extrude line fine uniform, meet preparation technology's requirement without bright band, black line, plane clearance, angular deviation.In addition, also to remove in time and extrude pad, the residual aluminium in extruded tube limit.
Distraction step: be used for drawing goods equably, makes extrusion stably carry out.Haulage speed can be set to automatically by those skilled in the art or other suitable values are drawn, but involves speed and should match with extruded velocity.
Cooling step: preferably use air-cooled come cooling products, but not quench.
Straightening step: align when product is cooled to below 50 DEG C, the leading dimensions of measurement products and main wall thickness dimension thus tentatively determine extensibility, preferably, the scope of stretching is 0.7 ~ 1.5% of article length.After confirmation extensibility, according to the length setting stretched length of section bar.
Sawing step: those skilled in the art can arrange saw blade Feeding speed according to actual needs and return speed.Check in sawing process product length without out-of-size scope, cut gradient without excessive situation.Then, aft-loaded airfoil is carried out to product sawing aft end face, namely burr is polished, make saw kerf neat, without gross distortion, carry out chamfering, and clean etc. to aluminium bits purging in section bar.Meanwhile, control sawing fuel charge well, dry the greasy dirt above section bar.
Above step and design parameter are wherein only an example, are all not implement steps necessary of the present invention and call parameter.Those skilled in the art can adjust flexibly according to the demand of processing technology or product parameters or add and subtract each step and design parameter thereof.Such as, those skilled in the art can according to bicycle rack project organization form, and the extrusion molding parts for special structure form need increase to repair type step, revise the deformation quantity caused by hot-extrudable operation.
Cycle frame manufacture method provided by the present invention adopts framed structure section integration extruding-out process to make cycle frame one-shot forming, its manufacturing process is simple, welding sequence is decreased compared with traditional Frame, easily realize the operation of mechanization batch manufacturing, greatly can boost productivity and the conformability of product, significantly reduce productive costs; In addition, the cycle frame manufactured under such an approach, has excellent structural strength and stability, not only ensure that aesthetic property but also have safety concurrently.
Although the present invention has described each conception of species in detail, it will be understood by those skilled in the art that for those concepts various amendment and substitute disclosed by the invention entirety instruction spirit under can realize.Those skilled in the art use ordinary skill just can when without the need to realizing in detail in the claims illustrated the present invention when undue experimentation.Be understandable that, disclosed specific concept is only illustrative, is not intended to limit the scope of the invention, and scope of the present invention is decided by the four corner of appended claims and equivalent thereof.
Claims (4)
1. a cycle frame, this cycle frame comprises the first framework, the second framework and multiple gusset; Wherein, described gusset is arranged between described first framework and described second framework, for strengthening the holding capacity of described first framework and described second framework; Described first framework, described second framework and described multiple gusset are one-body molded by extruding-out process; Described second framework is provided with axis installation portion, and described axis installation portion is for supporting the axis of bicycle.
2. cycle frame as claimed in claim 1, it is characterized in that, the thickness of described first framework and described second framework is at least 2.5mm.
3. have a bicycle for cycle frame as claimed in claim 1, this bicycle also comprises saddle, front fork, axis, crank and pedal; Wherein, described saddle and described front fork are fixed on described cycle frame respectively; Described axis passes the axis installation portion of described cycle frame and is supported on described axis installation portion, and one end of described crank is connected to one end of described axis, and the other end of described crank connects described pedal.
4. bicycle as claimed in claim 3, it is characterized in that, described crank comprises crank framework and brace panel; Wherein, described brace panel is arranged on for strengthening the holding capacity of described crank framework in described crank framework, and it is one-body molded that described crank framework and described brace panel pass through extruding-out process.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520401332.0U CN204821939U (en) | 2015-06-11 | 2015-06-11 | Bicycle frame and have this bicycle frame's bicycle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520401332.0U CN204821939U (en) | 2015-06-11 | 2015-06-11 | Bicycle frame and have this bicycle frame's bicycle |
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| CN204821939U true CN204821939U (en) | 2015-12-02 |
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| CN201520401332.0U Active CN204821939U (en) | 2015-06-11 | 2015-06-11 | Bicycle frame and have this bicycle frame's bicycle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104925202A (en) * | 2015-06-11 | 2015-09-23 | 北京摩拜科技有限公司 | Bicycle frame and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104925202A (en) * | 2015-06-11 | 2015-09-23 | 北京摩拜科技有限公司 | Bicycle frame and manufacturing method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181214 Address after: Room Bnan 1221, 2 bungalows, No. 5 College Road, Haidian District, Beijing 100083 Patentee after: Mobai (Beijing) Information Technology Co., Ltd. Address before: Room 2214, 2nd floor, No. 3 Building, 29 Dongbei Wangnan Road, Haidian District, Beijing, 100193 Patentee before: BEIJING MOBAI TECHNOLOGY CO., LTD. |
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| TR01 | Transfer of patent right |