CN107097885B - Four-bar longitudinal folding device - Google Patents
Four-bar longitudinal folding device Download PDFInfo
- Publication number
- CN107097885B CN107097885B CN201710443367.4A CN201710443367A CN107097885B CN 107097885 B CN107097885 B CN 107097885B CN 201710443367 A CN201710443367 A CN 201710443367A CN 107097885 B CN107097885 B CN 107097885B
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- China
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- connecting rod
- shaped connecting
- hinge
- rear middle
- middle tube
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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
- B62K15/00—Collapsible or foldable cycles
- B62K15/006—Collapsible or foldable cycles the frame being foldable
Abstract
The invention relates to a folding design for electric vehicles and bicycles, in particular to a four-bar longitudinal folding device which is simple in folding, high in vehicle body stability, convenient to assemble and small in occupied space after folding, and the four-bar longitudinal folding device comprises a front middle tube, a rear middle tube, a first hinge piece, a second hinge piece, a vertical type connecting rod and an L-shaped connecting rod, wherein the first hinge piece is sleeved on the front middle tube, the second hinge piece is sleeved on the rear middle tube, the bottom of the first hinge piece is connected with the bottom of the second hinge piece through a hinge, the top of the first hinge piece is also connected with one end of the vertical type connecting rod through a hinge, the other end of the vertical type connecting rod is connected with one end of the L-shaped connecting rod through a hinge, the other end of the L-shaped connecting rod is arranged at the tail end of the rear middle tube and is connected with the tail end of the rear middle tube through a hinge, and the L-shaped connecting rod comprises a L-shaped connecting rod section I and a L-shaped connecting rod section II, and the L-shaped connecting rod section II forms an L shape.
Description
Technical Field
The invention relates to a folding design for electric vehicles and bicycles, in particular to a four-bar longitudinal folding device.
Background
Existing folding bicycles and electric vehicles include a frame having unfolding and folding functions, an assembly, front wheels, rear wheels, saddles provided on the frame, and an electric control system driving the front wheels or the rear wheels. In order to facilitate carrying and reduce storage space, the frame of the existing folding bicycle and electric bicycle adopts one or more than two folding structures to realize folding function, and in the folding or unfolding process, a four-bar structure forming the frame plays a main role; a supporting rod is connected between the rear end of the upper connecting rod and the front end of the lower connecting rod, and the supporting rod is rotationally connected with the upper connecting rod and the lower connecting rod or is slidably connected with one of the upper connecting rod and the lower connecting rod. In the two structures, the former has no damping function, the latter has no self-locking function, and in use, the vehicle is easy to fold automatically due to external factors, so that the safety is poor.
Chinese patent CN201010146247.6 discloses a four bar linkage structure for a semi-automatic folding moped. The self-locking shock absorber has the functions of shock absorption and self locking while having a supporting function, and is good in safety. The device comprises a front connecting seat, a main bearing seat, an upper connecting rod and a lower connecting rod, wherein both ends of the upper connecting rod and both ends of the lower connecting rod are rotationally connected with the front connecting seat and the main bearing seat; a supporting rod is connected between the rear end of the upper connecting rod and the front end of the lower connecting rod, and is characterized in that: the support rod comprises a pipe sleeve and a rod, one part of the pipe sleeve and the rod is connected with the rear end of the upper connecting rod, the other part of the pipe sleeve and the rod is connected with the front end of the lower connecting rod, and the free end of the rod stretches into the pipe sleeve and is connected with the pipe sleeve into a whole in a lap joint mode, and then a spring is sleeved outside the pipe sleeve.
Although the folding problem of electric motor car and bicycle has been solved to fine to foretell design, its folding back occupation space is still great, and does not possess the self-locking function and when using above-mentioned mechanism left side to be the frame, its frame is softer, and automobile body stability is relatively poor when travelling at high speed, and the security is extremely low.
Disclosure of Invention
Aiming at the defects, the invention provides the four-bar longitudinal folding device which is simple to fold, strong in vehicle body stability, convenient to assemble and small in occupied space after folding.
In order to achieve the above purpose, the technical scheme of the invention is as follows: a four-bar linkage longitudinal folding device, characterized in that: the novel vertical connecting rod comprises a front middle pipe, a rear middle pipe, a first hinge part, a second hinge part, a vertical connecting rod and an L-shaped connecting rod, wherein the first hinge part is sleeved on the front middle pipe, the second hinge part is sleeved on the rear middle pipe, the bottom of the first hinge part and the bottom of the second hinge part are connected through a hinge, the top of the first hinge part is connected with one end of the vertical connecting rod through a hinge, the other end of the vertical connecting rod is connected with one end of the L-shaped connecting rod through a hinge, the other end of the L-shaped connecting rod is arranged at the tail end of the rear middle pipe and is connected with the tail end of the rear middle pipe through a hinge, the L-shaped connecting rod comprises a first L-shaped connecting rod section and a second L-shaped connecting rod section, and the first L-shaped connecting rod section and the second L-shaped connecting rod section form an L shape.
Preferably, a positioning device is arranged above the first hinge part, the positioning device comprises a first positioning hole and a positioning pin, and a second positioning hole is formed in the vertical connecting rod.
Preferably, a positioning hole III is arranged above the second hinge member.
Preferably, the sum of the length of the vertical link and the length of the first L-shaped link segment is equal to the sum of the width of the first hinge and the width of the second hinge.
Preferably, the length of the second L-shaped connecting rod section is equal to the sum of the length of the rear middle pipe and the length of the second hinge.
As can be seen from the above description, the present invention has the following advantages:
according to the four-bar longitudinal folding device, the first hinge piece is sleeved on the front middle tube, the second hinge piece is sleeved on the rear middle tube, the bottom of the first hinge piece and the bottom of the second hinge piece are connected through the hinge, so that the front middle tube and the rear middle tube can jointly rotate above each other, a parallel effect can be achieved after the front middle tube and the rear middle tube are overturned through the hinge, meanwhile, when the front middle tube and the rear middle tube are not overturned, the top of the first hinge piece is also connected with one end of the vertical connecting rod through the hinge, the other end of the vertical connecting rod is connected with one end of the L-shaped connecting rod through the hinge, and the other end of the L-shaped connecting rod is arranged at the tail end of the rear middle tube and is connected with the tail end of the rear middle tube through the hinge; by the aid of the design, when the front middle pipe and the rear middle pipe are in a flat state, the vertical connecting rod and the L-shaped connecting rod are supported together to a certain height, and a cushion can be mounted on the L-shaped connecting rod, so that the design of a cushion vertical pipe is replaced.
The L-shaped connecting rod comprises a first L-shaped connecting rod section and a second L-shaped connecting rod section, and the first L-shaped connecting rod section and the second L-shaped connecting rod section form an L shape; the sum of the length of the vertical connecting rod and the length of the first L-shaped connecting rod section is equal to the sum of the width of the first hinge part and the width of the second hinge part; the length of the L-shaped connecting rod section II is equal to the sum of the length of the rear middle pipe and the length of the hinge part II; the design can enable the first hinge part and the second hinge part of the front middle pipe and the rear middle pipe to be just contained in the width formed between the first L-shaped connecting rod section and the vertical connecting rod after the front middle pipe and the rear middle pipe are overturned, and the common height of the second hinge part and the front middle pipe is just the same as that of the first L-shaped connecting rod section and is parallel to the first L-shaped connecting rod section, so that the whole design occupies very little space after contraction, is extremely stable and is simple in folding operation.
Further, in order to ensure stability before and after folding, a positioning device is arranged above the first hinge part, the positioning device comprises a first positioning hole and a positioning pin, and a second positioning hole is formed in the vertical connecting rod; a positioning hole III is formed above the second hinge part; when not folded, the positioning pin is locked together with the first positioning hole and the second positioning hole so as to be stable, and when folded, the positioning pin is locked together with the first positioning hole and the third positioning hole so as to be stable, and the positioning pin is not easy to open.
Drawings
Fig. 1 is a schematic view showing a four-bar longitudinal folding device according to a state of the present invention.
Fig. 2 is a schematic view of a two-state structure of the four-bar longitudinal folding device of the present invention.
Fig. 3 is an enlarged partial schematic view of a four-bar longitudinal folding device a of the present invention.
Fig. 4 is a schematic view showing a state of a four-bar longitudinal folding device according to the present invention.
Description of the drawings: 1. front middle tube, 2, back middle tube, 3, hinge first, 4, hinge second, 5, vertical connecting rod, 6, L-shaped connecting rod, 61, L-shaped connecting rod section first, 62, L-shaped connecting rod section second, 7, locating hole first, 71, locating pin, 8, locating hole second, 9, locating hole third.
Detailed Description
As shown in the figure, the four-bar longitudinal folding device comprises a front middle tube 1, a rear middle tube 2, a first hinge part 3, a second hinge part 4, a vertical connecting rod 5 and an L-shaped connecting rod 6, wherein the first hinge part 3 is sleeved on the front middle tube 1, the second hinge part 4 is sleeved on the rear middle tube 2, the bottom of the first hinge part 3 and the bottom of the second hinge part 4 are connected through a hinge, the top of the first hinge part 3 is also connected with one end of the vertical connecting rod 5 through a hinge, the other end of the vertical connecting rod 5 is connected with one end of the L-shaped connecting rod 6 through a hinge, the other end of the L-shaped connecting rod 6 is arranged at the tail end of the rear middle tube 2 and is connected with the tail end of the rear middle tube 2 through a hinge, the L-shaped connecting rod 6 comprises a first L-shaped connecting rod section 61 and a second L-shaped connecting rod section 62, and the first L-shaped connecting rod section 61 and the second L-shaped connecting rod section 62 form an L shape; a positioning device is arranged above the first hinge part 3 and comprises a first positioning hole 7 and a positioning pin 71, and a second positioning hole 8 is arranged on the vertical connecting rod 5; a positioning hole III 9 is formed above the second hinge part 4; the sum of the length of the vertical connecting rod 5 and the length of the L-shaped connecting rod section 61 is equal to the sum of the width of the hinge part I3 and the width of the hinge part II 4; the length of the second L-shaped connecting rod section 62 is equal to the sum of the length of the rear middle pipe 2 and the length of the second hinge part 4.
According to the four-bar longitudinal folding device, the first hinge piece is sleeved on the front middle tube, the second hinge piece is sleeved on the rear middle tube, the bottom of the first hinge piece and the bottom of the second hinge piece are connected through the hinge, so that the front middle tube and the rear middle tube can jointly rotate above each other, a parallel effect can be achieved after the front middle tube and the rear middle tube are overturned through the hinge, meanwhile, when the front middle tube and the rear middle tube are not overturned, the top of the first hinge piece is also connected with one end of the vertical connecting rod through the hinge, the other end of the vertical connecting rod is connected with one end of the L-shaped connecting rod through the hinge, and the other end of the L-shaped connecting rod is arranged at the tail end of the rear middle tube and is connected with the tail end of the rear middle tube through the hinge; by the aid of the design, when the front middle pipe and the rear middle pipe are in a flat state, the vertical connecting rod and the L-shaped connecting rod are supported together to a certain height, and a cushion can be mounted on the L-shaped connecting rod, so that the design of a cushion vertical pipe is replaced.
The L-shaped connecting rod comprises a first L-shaped connecting rod section and a second L-shaped connecting rod section, and the first L-shaped connecting rod section and the second L-shaped connecting rod section form an L shape; the sum of the length of the vertical connecting rod and the length of the first L-shaped connecting rod section is equal to the sum of the width of the first hinge part and the width of the second hinge part; the length of the L-shaped connecting rod section II is equal to the sum of the length of the rear middle pipe and the length of the hinge part II; the design can enable the first hinge part and the second hinge part of the front middle pipe and the rear middle pipe to be just contained in the width formed between the first L-shaped connecting rod section and the vertical connecting rod after the front middle pipe and the rear middle pipe are overturned, and the common height of the second hinge part and the front middle pipe is just the same as that of the first L-shaped connecting rod section and is parallel to the first L-shaped connecting rod section, so that the whole design occupies very little space after contraction, is extremely stable and is simple in folding operation.
Further, in order to ensure stability before and after folding, a positioning device is arranged above the first hinge part, the positioning device comprises a first positioning hole and a positioning pin, and a second positioning hole is formed in the vertical connecting rod; a positioning hole III is formed above the second hinge part; when not folded, the positioning pin is locked together with the first positioning hole and the second positioning hole so as to be stable, and when folded, the positioning pin is locked together with the first positioning hole and the third positioning hole so as to be stable, and the positioning pin is not easy to open.
The invention and its embodiments have been described above with no limitation, and the actual construction is not limited to the embodiments of the invention as shown in the drawings. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present invention.
Claims (1)
1. Four-bar linkage vertical folding device, its characterized in that: the novel vertical connecting rod comprises a front middle pipe (1), a rear middle pipe (2), a first hinging piece (3), a second hinging piece (4), a vertical connecting rod (5) and an L-shaped connecting rod (6), wherein the first hinging piece (3) is sleeved on the front middle pipe (1), the second hinging piece (4) is sleeved on the rear middle pipe (2), the bottom of the first hinging piece (3) and the bottom of the second hinging piece (4) are connected through a hinge, the top of the first hinging piece (3) is also connected with one end of the vertical connecting rod (5) through a hinge, the other end of the vertical connecting rod (5) is connected with one end of the L-shaped connecting rod (6) through a hinge, the other end of the L-shaped connecting rod (6) is arranged at the tail end of the rear middle pipe (2) and is connected with the tail end of the rear middle pipe (2) through a hinge, the L-shaped connecting rod (6) comprises a first L-shaped connecting rod section (61) and a second L-shaped connecting rod section (62), and the first L-shaped connecting rod section (61) and the second L-shaped connecting rod section (62) form an L shape; a positioning device is arranged above the first hinge part (3), the positioning device comprises a first positioning hole (7) and a positioning pin (71), and a second positioning hole is formed in the vertical connecting rod (5); a positioning hole III is formed above the second hinge piece (4); the sum of the length of the vertical connecting rod (5) and the length of the L-shaped connecting rod section I (61) is equal to the sum of the width of the hinge part I (3) and the width of the hinge part II (4); the length of the L-shaped connecting rod section II (62) is equal to the sum of the length of the rear middle pipe (2) and the length of the hinge part II (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710443367.4A CN107097885B (en) | 2017-06-13 | 2017-06-13 | Four-bar longitudinal folding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710443367.4A CN107097885B (en) | 2017-06-13 | 2017-06-13 | Four-bar longitudinal folding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107097885A CN107097885A (en) | 2017-08-29 |
| CN107097885B true CN107097885B (en) | 2023-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710443367.4A Active CN107097885B (en) | 2017-06-13 | 2017-06-13 | Four-bar longitudinal folding device |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2900326Y (en) * | 2006-05-24 | 2007-05-16 | 葛磊 | Folding bicycle |
| CN200942848Y (en) * | 2006-09-07 | 2007-09-05 | 魏文士 | Folding joint |
| KR20090128003A (en) * | 2008-06-10 | 2009-12-15 | 이상옥 | Collapsible bicycle |
| CN105564565A (en) * | 2016-02-16 | 2016-05-11 | 朱红英 | Sticking-preventing folding device |
| CN206171672U (en) * | 2016-11-04 | 2017-05-17 | 天津市朗多自行车有限公司 | Folding portable electric energy car of riding instead of walk |
| CN106715253A (en) * | 2015-01-13 | 2017-05-24 | 丰田铁工株式会社 | Folding vehicle |
| CN106741452A (en) * | 2016-12-19 | 2017-05-31 | 苏州豪豪迈运动器材有限公司 | Foldable electric bicycle |
| CN207955906U (en) * | 2017-06-13 | 2018-10-12 | 程扬 | Double leval jib longitudinal folding apparatus |
-
2017
- 2017-06-13 CN CN201710443367.4A patent/CN107097885B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2900326Y (en) * | 2006-05-24 | 2007-05-16 | 葛磊 | Folding bicycle |
| CN200942848Y (en) * | 2006-09-07 | 2007-09-05 | 魏文士 | Folding joint |
| KR20090128003A (en) * | 2008-06-10 | 2009-12-15 | 이상옥 | Collapsible bicycle |
| CN106715253A (en) * | 2015-01-13 | 2017-05-24 | 丰田铁工株式会社 | Folding vehicle |
| CN105564565A (en) * | 2016-02-16 | 2016-05-11 | 朱红英 | Sticking-preventing folding device |
| CN206171672U (en) * | 2016-11-04 | 2017-05-17 | 天津市朗多自行车有限公司 | Folding portable electric energy car of riding instead of walk |
| CN106741452A (en) * | 2016-12-19 | 2017-05-31 | 苏州豪豪迈运动器材有限公司 | Foldable electric bicycle |
| CN207955906U (en) * | 2017-06-13 | 2018-10-12 | 程扬 | Double leval jib longitudinal folding apparatus |
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| Publication number | Publication date |
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| CN107097885A (en) | 2017-08-29 |
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