CN103029515A - Central shaft assembly of folding bicycle - Google Patents
Central shaft assembly of folding bicycle Download PDFInfo
- Publication number
- CN103029515A CN103029515A CN2012105819814A CN201210581981A CN103029515A CN 103029515 A CN103029515 A CN 103029515A CN 2012105819814 A CN2012105819814 A CN 2012105819814A CN 201210581981 A CN201210581981 A CN 201210581981A CN 103029515 A CN103029515 A CN 103029515A
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- Prior art keywords
- axle sleeve
- way tube
- folding bicycle
- axial line
- axis
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Abstract
The invention discloses a central shaft assembly of a folding bicycle, and the assembly comprises a five-way pipe (1), a central shaft (2) and a shaft sleeve (3); the shaft sleeve (3) is arranged in the five-way pipe (1); the central shaft (2) is arranged in the shaft sleeve (3); the axis of the inner circle of the shaft sleeve (3) is the same with that of the central shaft (2); the central shaft assembly of the folding bicycle is characterized in that the axis of the outer circle of the shaft sleeve (3) and the axis of the inner circle of the shaft sleeve (3) are arranged obliquely in an angle; and the outer wall of the shaft sleeve (3) is in deflection matching and movable connection with the inner wall of the five-way pipe (1). According to the central shaft assembly, the front wheel and the rear wheel of the bicycle are folded in a dislocation way through the rotational matching between the shaft sleeve with the outer wall being in deflection and the matched five-way pipe, so that the automatic folding of the bicycle is realized without any folder, the structure of the folding bicycle is simplified, and the central shaft assembly of the folding bicycle has the characteristics of simple appearance and convenience in use, and is suitable to be popularized and used.
Description
Technical field
The present invention relates to a kind of folding bicycle, specifically a kind of middle axle assembly of realizing the folding bicycle of bicycle autofolding.
Background technology
Bicycle is the vehicle of low-carbon (LC).Common bicycle is two wheel constructions, comprises vehicle frame, back vent, front-wheel, trailing wheel.
For making things convenient for carrying and depositing of bicycle, carry such as vehicle such as taking subway, bus and take in, Foldable bicycle has appearred.Common folding bicycle, vehicle frame integral structure and ordinary bicycle are similar, and by reducing wheel diameters, it is folding with the front and back of realizing vehicle frame that the vehicle frame place in the middle of front and rear wheel adds foldable structure; Install the fold mechanism realization additional to the side-foldable of handlebar at handlebar simultaneously.Yet, above-mentioned foldable structure the parts that increased bicycle are set, reduced simultaneously the succinct aesthetic measure of intensity and the car body outward appearance of car body itself.
Summary of the invention
The objective of the invention is the problem for existing folding bicycle existence, a kind of middle axle assembly of realizing the folding bicycle of bicycle autofolding is provided.
The objective of the invention is to solve by the following technical programs:
A kind of middle axle assembly of folding bicycle, comprise Five-way tube, axis and axle sleeve, be provided with axle sleeve in the Five-way tube, be provided with axis in the axle sleeve, the axial line of the inner circle of axle sleeve is identical with the axial line of axis, it is characterized in that being between the axial line of axial line and the inner circle of axle sleeve of cylindrical of described axle sleeve the tilting and axle sleeve of angle and cooperates with the Five-way tube deflection and be movably connected.
Described axle sleeve is irregular structure, the wall thickness of the semi-circular portions of axle sleeve is by thin gradually thickening, the wall thickness of the corresponding semi-circular portions of another of axle sleeve is then by thick gradually attenuation, so that the outer wall integral body of axle sleeve is with respect to the inner circle axial line deflection of axle sleeve, thereby guaranteeing that axle sleeve cooperates with the Five-way tube deflection is movably connected.
Angle between the axial line of described Five-way tube and the axial line of axis is 2-30 °.
The inwall middle part of described Five-way tube and/or the outer wall middle part of axle sleeve are provided with groove, in the described groove torsion spring are installed, and an end of described torsion spring is fixed on the Five-way tube, and the other end of torsion spring is fixed on the axle sleeve.
Described axle sleeve adopts self lubrication bearing.
Be provided with bearing between described axis and the axle sleeve.
Described Five-way tube is relative with axle sleeve to rotarily drive that vehicle frame and back vent are inwardly folding to make that dislocation reaches folded state side by side about bicycle wheels.
The present invention has the following advantages compared to existing technology:
Middle axle assembly of the present invention by the outer wall deflection axle sleeve and the normal-running fit of associated Five-way tube so that the bicycle wheels dislocation is folding, realize the auto-folder when bicycle need not folder, simplified the structure of folding bicycle, and have outward appearance characteristics succinct, easy to use, suit to promote the use of.
Description of drawings
Accompanying drawing 1 is structural representation of the present invention;
Accompanying drawing 2 is established reeded structural representation on the axle sleeve of the present invention.
Wherein: 1-Five-way tube; 2-axis; 3-axle sleeve; 4-groove; 5-torsion spring; 6-vehicle frame; 7-back vent.
The specific embodiment
The present invention is further illustrated below in conjunction with accompanying drawing and embodiment.
As shown in Figure 1: a kind of middle axle assembly of folding bicycle, comprise Five-way tube 1, axis 2 and axle sleeve 3, be provided with axle sleeve 3 in the Five-way tube 1, be provided with axis 2 in the axle sleeve 3, the axial line of the inner circle of axle sleeve 3 is identical with the axial line of axis 2, is the tilting and axle sleeve 3 of angle between the axial line of the axial line of the cylindrical of axle sleeve 3 and the inner circle of axle sleeve 3 and cooperates with Five-way tube 1 deflection and be movably connected.Its bottom bracket axle 3 is irregular structure, the wall thickness of the semi-circular portions of axle sleeve 3 is by thin gradually thickening, the wall thickness of another corresponding semi-circular portions of axle sleeve 3 is then by thick gradually attenuation, so that the outer wall integral body of axle sleeve 3 is with respect to the inner circle axial line deflection of axle sleeve 3, be to have certain angle between the axial line of inner circle of the axial line of cylindrical of axle sleeve 3 and axle sleeve 3, thereby guaranteeing that axle sleeve 3 cooperates with Five-way tube 1 deflection is movably connected.In the middle axle assembly that Five-way tube 1, axis 2 and axle sleeve 3 assemblings consist of, angle between the axial line of the axial line of Five-way tube 1 and axis 2 is 2-30 °, rotarily drives that vehicle frame 6 and back vent 7 are inwardly folding to make that dislocation reaches folded state side by side about bicycle wheels so that Five-way tube 1 and axle sleeve 3 are relative.Generally be provided with bearing between axis 2 and axle sleeve 3, but the bearing that then arranges between axle sleeve 3 and the axis 2 when axle sleeve 3 adopts self lubrication bearing can remove, the inner circle of bearing removal rear axle housing 3 and the cylindrical of axis 2 excessively cooperate.Axle sleeve 3 in being somebody's turn to do in the axle assembly can be made axle sleeve 3 by process inclined hole in a cylinder, also can be by processing to make axle sleeve 3 to behind the circle ring column deflection clamping its outside face being carried out turning.
Embodiment 1
As shown in Figure 2, in the present embodiment, between axle sleeve 3 and axis 2, be provided with bearing, the outer wall middle part of axle sleeve 3 is provided with groove 4, and torsion spring 5 one ends of groove 4 interior settings are fixed on the Five-way tube 1, and the other end is fixed on the axle sleeve 3, the setting of torsion spring 5 can be played certain position-limiting action to the mutual rotation of Five-way tube 1 and axle sleeve 3, for example when bicycle was folding, torsion spring 5 was in compressive state, when bicycle launches then torsion spring 5 be in extended state; Axle sleeve 3 is captiveed joint with back vent 7 in addition, the Five-way tube 1 that deflection is nested with on axle sleeve 3 is fixedly linked with vehicle frame 6, are connected with axle sleeve to relatively rotate as revolving member with Five-way tube 1 between vehicle frame 6 and the back vent 7 and are connected, after vehicle frame 6 and back vent 7 rotate to an angle, can realize the longitudinal folding of two sections of bicycle front and back.Because of the principle of deflection axle, after bicycle is folding, can interfere side by side and not about front and back wheel simultaneously.In this embodiment 1, axle sleeve 3 is not limited to an integral body shown in the embodiment 1, also can be combined into by two eccentric bushings that will meet operating needs the axle sleeve 3 of an integral body, two eccentric bushings that consist of axle sleeve 3 are assemblied in respectively in the inner chamber of Five-way tube 1 or its place, two ends; Five-way tube 1, axle sleeve 3 and vehicle frame 6, back vent 7 captives joint in addition, also be not limited to such scheme, when Five-way tube 1 can be fixedly linked with back vent 7 axle sleeve 3 is fixed with vehicle frame 6 and links to each other, be connected to realize between vehicle frame 6 and the back vent 7 being connected with axle sleeve to relatively rotate as revolving member with Five-way tube 1.
Middle axle assembly of the present invention by the outer wall deflection axle sleeve 3 and the normal-running fit of associated Five-way tube 1 so that the bicycle wheels dislocation is folding, realize the auto-folder when bicycle need not folder, simplified the structure of folding bicycle, and have outward appearance characteristics succinct, easy to use, suit to promote the use of.
Above embodiment only for explanation technological thought of the present invention, can not limit protection scope of the present invention with this, every technological thought that proposes according to the present invention, and any change of doing on the technical scheme basis all falls within the protection domain of the present invention; The technology that the present invention does not relate to all can be realized by prior art.
Claims (7)
1. the middle axle assembly of a folding bicycle, comprise Five-way tube (1), axis (2) and axle sleeve (3), be provided with axle sleeve (3) in the Five-way tube (1), be provided with axis (2) in the axle sleeve (3), the axial line of the inner circle of axle sleeve (3) is identical with the axial line of axis (2), it is characterized in that being between the axial line of axial line and the inner circle of axle sleeve (3) of cylindrical of described axle sleeve (3) the tilting and axle sleeve (3) of angle and cooperates with Five-way tube (1) deflection and be movably connected.
2. the middle axle assembly of folding bicycle according to claim 1, it is characterized in that described axle sleeve (3) is irregular structure, the wall thickness of the semi-circular portions of axle sleeve (3) is by thin gradually thickening, the wall thickness of another corresponding semi-circular portions of axle sleeve (3) is then by thick gradually attenuation, so that the outer wall integral body of axle sleeve (3) is with respect to the inner circle axial line deflection of axle sleeve (3), thereby guaranteeing that axle sleeve (3) cooperates with Five-way tube (1) deflection is movably connected.
3. the middle axle assembly of folding bicycle according to claim 1 and 2 is characterized in that the angle between the axial line of the axial line of described Five-way tube (1) and axis (2) is 2-30 °.
4. the middle axle assembly of folding bicycle according to claim 1 and 2, it is characterized in that the inwall middle part of described Five-way tube (1) and/or the outer wall middle part of axle sleeve (3) are provided with groove (4), torsion spring (5) is installed in the described groove (4), one end of described torsion spring (5) is fixed on the Five-way tube (1), and the other end of torsion spring (5) is fixed on the axle sleeve (3).
5. the middle axle assembly of folding bicycle according to claim 1 is characterized in that described axle sleeve (3) adopts self lubrication bearing.
6. the middle axle assembly of folding bicycle according to claim 1 is characterized in that being provided with bearing between described axis (2) and the axle sleeve (3).
7. the middle axle assembly of arbitrary described folding bicycle according to claim 1-6 is characterized in that described Five-way tube (1) is relative with axle sleeve (3) to rotarily drive that vehicle frame (6) and back vent (7) are inwardly folding to make that dislocation reaches folded state side by side about bicycle wheels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105819814A CN103029515A (en) | 2012-12-28 | 2012-12-28 | Central shaft assembly of folding bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105819814A CN103029515A (en) | 2012-12-28 | 2012-12-28 | Central shaft assembly of folding bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103029515A true CN103029515A (en) | 2013-04-10 |
Family
ID=48017124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105819814A Pending CN103029515A (en) | 2012-12-28 | 2012-12-28 | Central shaft assembly of folding bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103029515A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1200442A (en) * | 1997-05-23 | 1998-12-02 | 林金成 | Bottom bracket bearing of bicycle |
| TW470024U (en) * | 1998-11-18 | 2001-12-21 | Hung-Lin Yan | Improved five-way tube structure of bicycle |
| CN2908321Y (en) * | 2006-05-31 | 2007-06-06 | 闫洪起 | Angle folding type bicycle |
| CN201179935Y (en) * | 2008-04-01 | 2009-01-14 | 廖张华 | Simple longitudinal fold bicycle |
| CN202243913U (en) * | 2011-08-23 | 2012-05-30 | 黄琦 | Inclined pedal wheel |
-
2012
- 2012-12-28 CN CN2012105819814A patent/CN103029515A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1200442A (en) * | 1997-05-23 | 1998-12-02 | 林金成 | Bottom bracket bearing of bicycle |
| TW470024U (en) * | 1998-11-18 | 2001-12-21 | Hung-Lin Yan | Improved five-way tube structure of bicycle |
| CN2908321Y (en) * | 2006-05-31 | 2007-06-06 | 闫洪起 | Angle folding type bicycle |
| CN201179935Y (en) * | 2008-04-01 | 2009-01-14 | 廖张华 | Simple longitudinal fold bicycle |
| CN202243913U (en) * | 2011-08-23 | 2012-05-30 | 黄琦 | Inclined pedal wheel |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130410 |