CN110758621A - Bicycle frame folding structure - Google Patents
Bicycle frame folding structure Download PDFInfo
- Publication number
- CN110758621A CN110758621A CN201911227141.6A CN201911227141A CN110758621A CN 110758621 A CN110758621 A CN 110758621A CN 201911227141 A CN201911227141 A CN 201911227141A CN 110758621 A CN110758621 A CN 110758621A
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- Prior art keywords
- rotation
- bicycle frame
- front fork
- lifting screw
- rear seat
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- 230000007246 mechanism Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
-
- 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
- B62K15/00—Collapsible or foldable cycles
- B62K15/006—Collapsible or foldable cycles the frame being foldable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
- B62M6/80—Accessories, e.g. power sources; Arrangements thereof
- B62M6/90—Batteries
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Motorcycle And Bicycle Frame (AREA)
Abstract
The invention discloses a bicycle frame folding structure, comprising: the bicycle frame comprises a rear seat frame and a front fork, and is characterized in that the tail part of the front fork is rotationally connected with the front end of the rear seat frame; the front fork is provided with an anti-rotation groove, the rear seat frame is provided with a sliding groove corresponding to the anti-rotation groove, an anti-rotation sliding block matched with the anti-rotation groove is arranged in the sliding groove, the bottom of the sliding groove is provided with a lifting screw rod, one end of the lifting screw rod is in contact with the anti-rotation sliding block, and the other end of the lifting screw rod is exposed outside the rear seat frame. The anti-rotation sliding block is arranged in the width range of the cross rod of the front fork, and the size of the anti-rotation sliding block can be set randomly, so that the locking is ensured to be stable; and the traditional external folding box structure is cancelled, and the structure is simple and more attractive.
Description
Technical Field
The invention relates to the technical field of folding bicycles, in particular to a frame folding structure for a folding bicycle or a folding electric power-assisted bicycle.
Background
The electric folding bicycle is a common traffic work in modern people life, and the electric folding bicycle can be folded, so that the occupied space for storage is reduced, the electric folding bicycle is more and more popular among people, and the electric folding bicycle is one of main transportation tools for people. With the progress of the times and the development of science and technology, the requirements of people on electric folding bicycles are higher and higher, and in recent years, various novel electric folding bicycles are produced and meet the requirements of consumers.
For example, a chinese utility model patent with publication number CN205113593U discloses a rotatory folding people's electricity hybrid bicycle frame of built-in battery integral type, as shown in fig. 1, including well pipe 01, top tube 02, head pipe 03 and back vent 04, its characterized in that: the middle pipe 01 is composed of an upper middle pipe and a lower middle pipe, threads are respectively arranged at the connecting ends of the upper middle pipe and the lower middle pipe, and the clamping nut 05 is screwed on the threaded ends of the upper middle pipe and the lower middle pipe; one end of the upper tube 02 is fixedly connected with the head tube 03, and the other end of the upper tube 02 is fixedly connected with the upper middle tube; a shaft 07 is arranged at the bottom of the upper pipe 02, and the rotating shaft sleeve 06 is sleeved at the lower part of the shaft 07 and is in rotating fit with the shaft 07; the rear fork 04 is fixedly connected to the lower middle pipe, and one end of the rear fork 04 is fixedly connected to the rotary shaft sleeve 06. When the folding is needed, the clamping nut 05 is loosened, and the rear fork 04 and the lower middle pipe are rotated and folded through the shaft 07 below the upper pipe 02. Although this patent can realize the quick folding of bicycle frame, when the frame expandes the use, the clamping nut 05 is mainly come from to the fixed power of going up well pipe and well pipe down, and clamping nut 05 is unexpected easily in the use and is loosened, has the potential safety hazard. Therefore, most of the folding structures of the bicycle frame common in the prior art adopt a mode of adding a folding box on a middle pipe.
For example, as shown in fig. 2 and 3, a frame of the self-generating foldable electric bicycle disclosed in chinese patent application publication No. CN106926955A includes a front fork 11 and a rear fork 12, a foldable member 13 is commonly connected between the front fork 11 and the rear fork 12, the foldable member 13 includes a first foldable head 131 and a second foldable head 132 hinged to each other, a lock handle 133 is hinged to the first foldable head 131, a lock slot 134 corresponding to the lock handle 133 is formed in the second foldable head 132, a locking member 135 and a lock bolt member are disposed in the lock slot 134, and a corresponding lock hole 136 and a corresponding lock hole 137 are disposed on the lock handle 133. When the vehicle body needs to be folded, the latch member is withdrawn from the latch hole 137 by the latch switch 138, and then the lever 133 is taken out from the latch groove 134, and the front fork 11 and the rear fork 12 are folded in half by the handle. When it is desired to ride a bike, the front fork 11 is rotated back into position, and then the latch lever 133 is pushed into the latch slot 134, secured by the latch 1355, and then the latch member is pushed into the latch hole 137 by the latch switch 138, thereby achieving multiple latching. However, the folding box is complex in structure and not beautiful enough; moreover, the reverse rotation force between the front fork 11 and the rear fork 12 completely acts on the lock lever 133, and most of the lock levers 133 are in the form of plates, so that the strength of the lock levers is often difficult to meet the requirement, and some additional safety mechanisms need to be added, as described in the chinese utility model publication No. CN209700850U, thereby further complicating the structure.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a bicycle frame folding mechanism which is simple in structure, stable in locking and attractive.
In order to achieve the purpose, the invention adopts the following technical scheme.
A bicycle frame folding structure comprising: the bicycle frame comprises a rear seat frame and a front fork, and is characterized in that the tail part of the front fork is rotationally connected with the front end of the rear seat frame; the front fork is provided with an anti-rotation groove, the rear seat frame is provided with a sliding groove corresponding to the anti-rotation groove, an anti-rotation sliding block matched with the anti-rotation groove is arranged in the sliding groove, the bottom of the sliding groove is provided with a lifting screw rod, one end of the lifting screw rod is in contact with the anti-rotation sliding block, and the other end of the lifting screw rod is exposed outside the rear seat frame.
More preferably, the depth of the anti-rotation groove is lower than the height of the anti-rotation slider.
More preferably, a handle is fixed to an exposed end of the elevating screw.
More preferably, the anti-rotation groove is formed in the bottom of the front fork, and the top of the lifting screw is in abutting contact with the bottom of the anti-rotation sliding block.
More preferably, the lifting screw and the anti-rotation sliding block form a nesting connection capable of rotating mutually, so that the anti-rotation sliding block moves along with the axial direction of the lifting screw.
More preferably, the anti-rotation grooves and the anti-rotation sliders are in the shape of a long strip, an ellipse or a polygon.
More preferably, the middle part of the anti-rotation groove is provided with a strip-shaped protrusion, and the top of the anti-rotation sliding block is provided with a strip-shaped groove matched with the strip-shaped protrusion.
More preferably, the bicycle frame folding structure is used on an electric power-assisted bicycle, and a battery placing cavity is arranged in the cross bar of the front fork.
More preferably, the upper and lower side arms of the battery placing cavity are respectively provided with a rotating shaft mounting groove, and the front fork and the rear seat frame are connected through a rotating shaft inserted in the rotating shaft mounting grooves.
More preferably, bearings are respectively provided on the front fork and the rear seat frame, and both ends of the rotation shaft are connected to the bearings.
The invention has the beneficial effects that:
firstly, parts such as an anti-rotation groove, an anti-rotation sliding block, a lifting screw rod and the like are organically combined, the lifting screw rod drives the anti-rotation sliding block to lift so as to realize locking of a folding structure, and the size of the anti-rotation sliding block can be randomly arranged within the width range of a cross rod of a front fork so as to ensure stable locking; and the traditional external folding box structure is cancelled, and the structure is simple and more attractive.
Second, through setting up the mounting groove of the spindle separately in the upper and lower side arms of the battery placing cavity, connect through the spindle inserted in the mounting groove of the said spindle between back seat frame and the front fork; like this, can realize the front fork with rotation between the back seat frame is connected, avoids the pivot to alternate in the horizontal pole and occupies the space that the chamber was placed to the battery again to make electric bicycle can carry on the battery of bigger capacity.
Thirdly, arranging a strip-shaped bulge in the anti-rotation groove, and arranging a strip-shaped groove matched with the strip-shaped bulge at the top of the anti-rotation sliding block; like this, prevent changeing and can form three interlock structure of mutually supporting between slider and the anti-rotating groove, can further improve and prevent changeing the performance for the locking between back seat frame and the front fork is more firm.
Drawings
Fig. 1 is a schematic view of a conventional bicycle frame.
Fig. 2 is a schematic view of another conventional bicycle frame structure.
Fig. 3 is an exploded view of the folder of fig. 2.
Fig. 4 is a schematic view of a folding structure of a bicycle frame provided by the invention.
Fig. 5 shows a cross-sectional view of fig. 4.
Fig. 6 is a partially enlarged view of fig. 5.
Fig. 7 is a schematic view showing a connection between the lifting screw and the slider.
Description of reference numerals:
01: middle tube, 02: an upper pipe, 03: head pipe, 04: rear fork, 05: clamping nut, 06: rotating shaft sleeve, 07 axle.
11: front fork, 12: rear fork, 13: folding member, 131: first folding head, 132: second folding head, 133: lock lever, 134: lock groove, 135: retaining member, 136: locking hole, 137: keyhole, 138: a latch switch.
201: rear mount, 202: front fork, 203: anti-rotation groove, 204: chute, 205: anti-rotation slider, 206: lifting screw, 207: a handle, 208: strip-shaped protrusion, 209: strip groove, 210: battery housing chamber, 211: pivot mounting groove, 212: rotating shaft, 213: and a bearing.
Detailed Description
In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated without limiting the specific scope of protection of the present invention.
Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, a definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the feature, and in the description of the invention, "at least" means one or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "assembled", "connected", and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.
In the present invention, unless otherwise specified and limited, "above" or "below" a first feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "above," "below," and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply an elevation which indicates a level of the first feature being higher than an elevation of the second feature. The first feature being "above", "below" and "beneath" the second feature includes the first feature being directly below or obliquely below the second feature, or merely means that the first feature is at a lower level than the second feature.
The following describes the embodiments of the present invention with reference to the drawings of the specification, so that the technical solutions and the advantages thereof are more clear and clear. The embodiments described below are exemplary and are intended to be illustrative of the invention, but are not to be construed as limiting the invention.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
As shown in fig. 4-6, a bicycle frame folding structure comprises: a rear seat frame 201 and a front fork 202, wherein the tail part of the front fork 202 is rotatably connected with the front end of the rear seat frame 201; the front fork 202 is provided with an anti-rotation groove 203, the rear seat frame 201 is provided with a sliding groove 204 corresponding to the anti-rotation groove 203, the sliding groove 204 is internally provided with an anti-rotation sliding block 205 matched with the anti-rotation groove 203, the bottom of the sliding groove 204 is provided with a lifting screw 206, one end of the lifting screw 206 is in contact with the anti-rotation sliding block 205, and the other end of the lifting screw is exposed outside the rear seat frame 201.
The depth of the anti-rotation groove 203 is lower than the height of the anti-rotation slider 205, so as to prevent the anti-rotation slider 205 from falling out of the sliding groove 204 and losing efficacy due to the excessive rise of the lifting screw 206. In particular, to facilitate the application of force to the lift screw 206, a handle 207 is fixed to an exposed end of the lift screw 206.
In this embodiment, the anti-rotation slot 203 is preferably disposed at the bottom of the front fork 202, and the top of the lifting screw 206 is in abutting contact with the bottom of the anti-rotation slider 205. In other embodiments, the anti-rotation slot is disposed at the top of the front fork, and the lifting screw and the slider form a nesting connection capable of rotating with each other, so that the anti-rotation slider moves along with the axial direction of the lifting screw, as shown in fig. 7; the present embodiment is not limited.
Preferably, the anti-rotation slots 203 and the anti-rotation sliders 205 are in the shape of long strips. In other embodiments, the anti-rotation slot and the anti-rotation slider are in any shape such as an ellipse, a polygon, etc. that can prevent the two from rotating with each other.
Preferably, a strip-shaped protrusion 208 is arranged in the middle of the anti-rotation slot 203, and a strip-shaped slot 209 matched with the strip-shaped protrusion 208 is arranged at the top of the anti-rotation slider 205. Thus, three mutually matched occlusion structures can be formed between the anti-rotation sliding block 205 and the anti-rotation groove 203, so that the anti-rotation performance can be further improved, and the locking between the rear seat frame 201 and the front fork 202 is more stable. Of course, as an alternative embodiment, the number and shape of the strip-shaped protrusions may be adjusted according to actual needs, and are not limited to this embodiment.
Further preferably, the bicycle frame is used for an electric power assisted bicycle, a battery accommodating cavity 210 is provided in a cross bar of the front fork 202, rotation shaft mounting grooves 211 are respectively provided in upper and lower side arms of the battery accommodating cavity 210, and the front fork 202 and the rear seat frame 201 are connected by a rotation shaft 212 inserted in the rotation shaft mounting grooves 211. Thus, the front fork 202 and the rear seat frame 201 can be rotatably connected, and the rotating shaft is prevented from penetrating into the cross rod to occupy the space of the battery placing cavity 210, so that the electric power-assisted bicycle can carry a battery with larger capacity. In order to ensure smooth rotation, bearings 213 are further provided on the front fork 202 and the rear seat frame 201, respectively, and both ends of the rotating shaft 212 are connected to the bearings 213.
The embodiment provides a bicycle frame, its theory of operation is: 1) when the bicycle frame is folded, the handle 207 is unscrewed to enable the lifting screw 206 to descend, and the anti-rotation sliding block 205 also descends under the action of self gravity along with the descending of the lifting screw 206, so that the anti-rotation sliding block 205 is separated from the anti-rotation groove 203, and the rotary folding between the rear seat frame 201 and the front fork 202 is realized. 2) When a rider needs to ride the bicycle, the rear seat frame 201 and the front fork 202 are unfolded, then the handle 207 is screwed down to enable the lifting screw 206 to ascend, and the anti-rotation sliding block 205 enters the anti-rotation groove 203 to achieve the purpose of locking and anti-rotation.
Compared with the prior art, the bicycle frame folding structure provided by the embodiment organically combines the parts such as the anti-rotation groove, the anti-rotation sliding block, the lifting screw and the like, the lifting screw drives the anti-rotation sliding block to lift so as to realize the locking of the folding structure, and the size of the anti-rotation sliding block can be randomly arranged in the width range of the cross rod of the front fork, so that the locking stability is ensured; and the traditional external folding box structure is cancelled, and the structure is simple and more attractive.
It will be appreciated by those skilled in the art from the foregoing description of construction and principles that the invention is not limited to the specific embodiments described above, and that modifications and substitutions based on the teachings of the art may be made without departing from the scope of the invention as defined by the appended claims and their equivalents. The details not described in the detailed description are prior art or common general knowledge.
Claims (10)
1. A bicycle frame folding structure comprising: the bicycle frame comprises a rear seat frame and a front fork, and is characterized in that the tail part of the front fork is rotationally connected with the front end of the rear seat frame; the front fork is provided with an anti-rotation groove, the rear seat frame is provided with a sliding groove corresponding to the anti-rotation groove, an anti-rotation sliding block matched with the anti-rotation groove is arranged in the sliding groove, the bottom of the sliding groove is provided with a lifting screw rod, one end of the lifting screw rod is in contact with the anti-rotation sliding block, and the other end of the lifting screw rod is exposed outside the rear seat frame.
2. A bicycle frame folding arrangement according to claim 1, characterised in that the depth of the anti-rotation slot is lower than the height of the anti-rotation slider.
3. A bicycle frame folding arrangement as claimed in claim 1, characterised in that a handle is fixed to the exposed end of the lifting screw.
4. A bicycle frame folding structure as in claim 1, wherein said anti-rotation slot is provided at the bottom of said front fork, and the top of said lifting screw abuts against the bottom of said anti-rotation slider.
5. A bicycle frame folding structure according to claim 1, characterized in that said lifting screw and said anti-rotation slider constitute a mutually rotatable nested connection, so that said anti-rotation slider follows the axial movement of said lifting screw.
6. A bicycle frame folding structure, according to claim 1, characterized in that said anti-rotation slots and said anti-rotation sliders are in the shape of elongated strips, oval or polygons.
7. The bicycle frame folding structure of claim 1, wherein a strip-shaped protrusion is provided in the middle of the anti-rotation slot, and a strip-shaped slot engaged with the strip-shaped protrusion is provided on the top of the anti-rotation slider.
8. A bicycle frame folding arrangement as claimed in claim 1, wherein the bicycle frame folding arrangement is for use on an electrically assisted bicycle, and a battery receiving cavity is provided in the cross bar of the front fork.
9. The folding structure of bicycle frame as claimed in claim 8, wherein the battery receiving cavity has upper and lower side arms respectively provided with a shaft mounting groove, and the front fork and the rear seat frame are connected by a shaft inserted in the shaft mounting groove.
10. A bicycle frame folding structure according to claim 9, wherein bearings are provided on said front fork and said rear seat frame, respectively, and both ends of said rotation shaft are connected to said bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911227141.6A CN110758621A (en) | 2019-12-04 | 2019-12-04 | Bicycle frame folding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911227141.6A CN110758621A (en) | 2019-12-04 | 2019-12-04 | Bicycle frame folding structure |
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| Publication Number | Publication Date |
|---|---|
| CN110758621A true CN110758621A (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911227141.6A Pending CN110758621A (en) | 2019-12-04 | 2019-12-04 | Bicycle frame folding structure |
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| CN (1) | CN110758621A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4284288A (en) * | 1979-09-24 | 1981-08-18 | Fulton Roger G | Folding bicycle structure |
| TW399600U (en) * | 1999-04-09 | 2000-07-21 | Taiwan Bicycle Ind R&D Center | Battery storing structure for electromotive collapsible bicycle |
| JP3084052U (en) * | 2001-08-10 | 2002-02-28 | 株式会社東興商会 | Folding bike |
| US20050285366A1 (en) * | 2004-06-28 | 2005-12-29 | Kuo-Ming Huang | Foldable bicycle frame |
| KR20110011326U (en) * | 2010-06-01 | 2011-12-07 | 쿠오-넹 첸 | Folding bicycle of improved structure |
| CN103043160A (en) * | 2011-10-11 | 2013-04-17 | 贝斯特吉赫曼诺斯有限公司 | Folding bicycle, particularly a pedal-assist bicycle |
| KR20140140299A (en) * | 2013-05-29 | 2014-12-09 | 주식회사 이노디자인 | Frame for bicycle, and bicycle including the same |
| CN105711720A (en) * | 2016-04-18 | 2016-06-29 | 广州凯路仕自行车运动时尚产业股份有限公司 | Foldable bicycle |
| CN106926955A (en) * | 2017-03-17 | 2017-07-07 | 宁波路尚新能源科技有限公司 | A kind of self-power generation type folding electric bicycle |
| CN207106760U (en) * | 2017-08-22 | 2018-03-16 | 深圳市骑士隆电子科技有限公司 | A kind of electric foldable bicycle |
| CN210942096U (en) * | 2019-12-04 | 2020-07-07 | 佛山市正步科技有限公司 | Bicycle frame folding structure |
-
2019
- 2019-12-04 CN CN201911227141.6A patent/CN110758621A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4284288A (en) * | 1979-09-24 | 1981-08-18 | Fulton Roger G | Folding bicycle structure |
| TW399600U (en) * | 1999-04-09 | 2000-07-21 | Taiwan Bicycle Ind R&D Center | Battery storing structure for electromotive collapsible bicycle |
| JP3084052U (en) * | 2001-08-10 | 2002-02-28 | 株式会社東興商会 | Folding bike |
| US20050285366A1 (en) * | 2004-06-28 | 2005-12-29 | Kuo-Ming Huang | Foldable bicycle frame |
| KR20110011326U (en) * | 2010-06-01 | 2011-12-07 | 쿠오-넹 첸 | Folding bicycle of improved structure |
| CN103043160A (en) * | 2011-10-11 | 2013-04-17 | 贝斯特吉赫曼诺斯有限公司 | Folding bicycle, particularly a pedal-assist bicycle |
| KR20140140299A (en) * | 2013-05-29 | 2014-12-09 | 주식회사 이노디자인 | Frame for bicycle, and bicycle including the same |
| CN105711720A (en) * | 2016-04-18 | 2016-06-29 | 广州凯路仕自行车运动时尚产业股份有限公司 | Foldable bicycle |
| CN106926955A (en) * | 2017-03-17 | 2017-07-07 | 宁波路尚新能源科技有限公司 | A kind of self-power generation type folding electric bicycle |
| CN207106760U (en) * | 2017-08-22 | 2018-03-16 | 深圳市骑士隆电子科技有限公司 | A kind of electric foldable bicycle |
| CN210942096U (en) * | 2019-12-04 | 2020-07-07 | 佛山市正步科技有限公司 | Bicycle frame folding structure |
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