CN209795706U - Folding joint device - Google Patents
Folding joint device Download PDFInfo
- Publication number
- CN209795706U CN209795706U CN201920354133.7U CN201920354133U CN209795706U CN 209795706 U CN209795706 U CN 209795706U CN 201920354133 U CN201920354133 U CN 201920354133U CN 209795706 U CN209795706 U CN 209795706U
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- CN
- China
- Prior art keywords
- connecting plate
- folding joint
- pull rod
- locking
- arc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a folding joint device, which comprises an upper connecting plate and a lower connecting plate, wherein the side edge of the upper connecting plate is provided with two upper lugs which are arranged at intervals, the side edge of the lower connecting plate is provided with two lower lugs which are arranged at intervals, and two pin shafts with the same axial lead are respectively used for connecting one upper lug with one lower lug in a hinged manner; the eccentric cam at the end part of the wrenching device is arranged between the two lower lugs, the eccentric cam is connected with the tail end of the pull rod, and the front end of the pull rod is provided with a locking block which is arranged in a locking groove of the upper connecting plate and the lower connecting plate. The folding joint device is convenient to process and assemble, and the whole stress is more uniform and reasonable, so that the usability and the service life of the folding joint device can be improved.
Description
Technical Field
The utility model relates to a folding joint, in particular to can be applied to folding bicycle or foldable electric scooter's folding joint device.
Background
Energy conservation and emission reduction are advocated all over the world, and China is a countless county of bicycles and electric vehicles. Because of its portability and small occupied space, the foldable bicycle has become a very important kind of bicycle and has a tendency to become more and more popular.
Most of the existing folding bicycles are provided with a folding joint at the middle part of the bicycle frame or at the position of a vertical tube. For example, chinese patent CN201120182082.8 discloses a "locking mechanism and folding joint", which has an upper folding member 12 and a lower folding member 15, wherein the ring body of the pull ring 3 extends between a pair of earrings 2 of the handle, an eccentric cam 4 is inserted into the eccentric holes of the pair of earrings 2 to cover the pull ring on the eccentric cam, and a shaft pin 5 passes through the rotating shaft hole of the eccentric cam 4. At present all folding joints are all run through and articulated link together last folded piece and lower folded piece through a round pin axle, and its shortcoming is that the machining precision requires highly to go up the folded piece and fold down the in-process that opens and shuts, and the handle all has contact friction effect at the rotation in-process, consequently needs great effort to open and shut the operation, and after long time, cause wearing and tearing easily, can seriously reduce and use the smoothness nature.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a folding joint device that is folding convenient, laborsaving, durable, simple structure, easily manufacturing simultaneously.
The utility model discloses a realize like this: a folding joint device comprises an upper connecting plate and a lower connecting plate, wherein the side edge of the upper connecting plate is provided with two upper lugs arranged at intervals, the side edge of the lower connecting plate is provided with two lower lugs arranged at intervals, and two pin shafts with the same axis respectively connect one upper lug with one lower lug in a hinged manner; the eccentric cam at the end part of the wrenching device is arranged between the two lower lugs, the eccentric cam is connected with the tail end of the pull rod, and the front end of the pull rod is provided with a locking block which is arranged in a locking groove of the upper connecting plate and the lower connecting plate.
An arc-shaped groove is formed in the upper connecting plate between the two upper lugs, and the arc surface of the arc-shaped groove is matched with the outer arc surface of the eccentric cam; the arc-shaped groove is provided with a through hole, and the middle part of the pull rod penetrates through the through hole.
A guide block is fixedly arranged in the upper connecting plate, the guide block is provided with a guide hole, and the guide hole and the through hole have the same axial lead; the middle part of the pull rod penetrates through the guide hole.
The periphery of the pull rod is sleeved with a spring, and the spring is arranged between the guide block and the locking block.
The locking groove is positioned on the different sides of the upper lug and the lower lug and consists of an upper locking groove and a lower locking groove which are respectively positioned on the upper connecting plate and the lower connecting plate; the locking groove is provided with an inwards concave cambered surface, the inner side of the locking block is provided with a convex cambered surface, and the cambered surface of the locking groove is matched with the cambered surface of the locking block.
The cambered surface of the locking block is composed of two cambered rail surfaces which are respectively positioned at two sides of the locking block.
An upper notch is formed in the upper locking groove, and a lower notch is formed in the lower locking groove.
The middle part of the locking block is provided with a connecting hole, and the front end of the pull rod penetrates through the connecting hole; the outer side of the locking block is provided with a counter bore with an inner concave arc surface at the connecting hole, the front end of the pull rod is provided with a screw cap, and the inner side of the screw cap is provided with an arc surface matched with the inner concave arc surface of the counter bore.
The eccentric cam is provided with two wheel sheets arranged at intervals, and the bolt is hinged in the eccentric holes of the two wheel sheets; the tail end of the pull rod is connected with the bolt.
An arc-shaped gasket is arranged between the eccentric cam and the arc-shaped groove.
The utility model discloses folding piecing devices's upper junction plate and lower connecting plate are connected through two independent round pin axle hinges, pull device tip lug connection pull rod, can obviously increase like this and pull the device easy operability and reduce the processing, the assembly degree of difficulty. The inner side of the screw cap at the front end of the pull rod is provided with a cambered surface matched with the concave arc surface of the counter bore, so that the stress of the locking block is more uniform, the upper connecting plate and the lower connecting plate are more reasonably locked, and the service life of the whole folding joint device can be prolonged.
Drawings
Fig. 1 is an exploded perspective view of the folding joint device of the present invention;
Fig. 2 is an exploded view of another angle of the folding joint device of the present invention;
FIG. 3 is a schematic perspective view of the folding joint device of the present invention in a folded state;
Fig. 4 is a cross-sectional view of the folding joint device of the present invention.
Detailed Description
The folding joint device of the present invention will be described in further detail with reference to fig. 1 to 4.
As shown in fig. 1, 2 and 4, the folding joint device comprises an upper connecting plate 1 and a lower connecting plate 2, wherein the side edge of the upper connecting plate is provided with two upper lugs 11 arranged at intervals, the side edge of the lower connecting plate is provided with two lower lugs 21 arranged at intervals, and two coaxial pin shafts 3 are respectively used for connecting one upper lug with one lower lug in a hinged manner. The pulling device 4 is composed of an eccentric cam 41 and a handle 42. The eccentric cam 41 at the end of the pulling device 4 is arranged between the two lower lugs, the eccentric cam is connected with the tail end of the pull rod 5, the front end of the pull rod is provided with a locking block 6, and the locking block is arranged in the locking grooves of the upper connecting plate and the lower connecting plate.
An arc-shaped groove 13 is formed between the two upper lugs of the upper connecting plate, and the arc surface of the arc-shaped groove 13 is matched with the outer arc surface of the eccentric cam 41. The arc-shaped groove is provided with a through hole 14, and the middle part of the pull rod 5 penetrates through the through hole 14. An arc-shaped gasket 18 is arranged between the eccentric cam and the arc-shaped groove, so that the abrasion can be further reduced, and the tension can be further increased.
a guide block 15 is fixedly arranged in the upper connecting plate 1, the guide block is provided with a guide hole 151, and the guide hole 151 and the through hole 14 have the same axial lead; the middle of the pull rod 5 penetrates through the guide hole 151. The periphery of the pull rod is sleeved with a spring 16, the spring is arranged between the guide block 15 and the locking block 6, when the pull rod moves outwards, the spring pushes the locking block 6 open to enable the locking block to be separated from the locking groove, and the folding joint can be folded or reset smoothly.
the locking groove is positioned on the different sides of the upper lug and the lower lug, and the locking groove is composed of an upper locking groove 12 and a lower locking groove 22 which are respectively positioned on the upper connecting plate and the lower connecting plate; the locking groove is provided with an inwards concave cambered surface, the inner side of the locking block 6 is provided with a convex cambered surface, and the cambered surface of the locking groove is matched with the cambered surface of the locking block. The cambered surface of the locking block 6 is composed of two cambered rail surfaces 61 which are respectively positioned at two sides of the locking block.
an upper notch 17 is formed in the upper locking groove 12, a lower notch 23 is formed in the lower locking groove 22, and the upper notch 17 corresponds to the lower notch 23. When the folding joint device is closed, the front end of the pull rod 5 passes through a space formed by the upper notch 17 and the lower notch 23.
The middle part of the locking block 6 is provided with a connecting hole 62, and the front end of the pull rod 5 passes through the connecting hole 62; the outer side of the locking block 6 is provided with a counter bore 63 with an inner concave arc surface at the connecting hole, the front end of the pull rod 5 is provided with a screw cap 51, and the inner side of the screw cap is provided with an arc surface 511 matched with the inner concave arc surface of the counter bore. The structure can ensure that the stress of the locking block 6 is more uniform in the using process.
The eccentric cam 41 is provided with two wheel sheets which are arranged at intervals, and the bolt 43 is hinged in the eccentric holes of the two wheel sheets; the tail end of the pull rod is connected with the bolt. The structure and the application method of the eccentric cam belong to the known common technologies in the field, and are not described herein.
As shown in figures 3 and 4, the folding joint device has a very compact and reasonable structure, and the handle 42 is pulled to push the pull rod 5 to move forwards or backwards, so that the folding joint device is very labor-saving and durable.
The folding joint device can be widely applied to traffic and entertainment sports products such as folding bicycles, folding electric vehicles, folding scooters and the like.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A folding joint device, comprising an upper connecting plate (1), a lower connecting plate (2), said upper connecting plate side having two spaced-apart upper lugs (11), said lower connecting plate side having two spaced-apart lower lugs (21), characterized in that: two pin shafts (3) with the same axis are respectively hinged with an upper lug and a lower lug; an eccentric cam (41) at the end part of the pulling device (4) is arranged between the two lower lugs, the eccentric cam is connected with the tail end of the pull rod (5), and the front end of the pull rod is provided with a locking block (6) which is arranged in a locking groove of the upper connecting plate and the lower connecting plate.
2. The folding joint arrangement of claim 1, wherein: an arc-shaped groove (13) is formed in the upper connecting plate between the two upper lugs, and the arc surface of the arc-shaped groove is matched with the outer arc surface of the eccentric cam; the arc-shaped groove is provided with a through hole (14), and the middle part of the pull rod penetrates through the through hole.
3. The folding joint arrangement of claim 2, wherein: a guide block (15) is arranged in the upper connecting plate, the guide block is provided with a guide hole (151), and the guide hole and the through hole have the same axial lead; the middle part of the pull rod penetrates through the guide hole.
4. The folding joint arrangement of claim 3, wherein: the pull rod is sleeved with a spring (16) which is arranged between the guide block and the locking block.
5. The folding joint arrangement of claim 2, wherein: the locking groove is positioned on the different sides of the upper lug and the lower lug, and the locking groove is composed of an upper locking groove (12) and a lower locking groove (22) which are respectively positioned on the upper connecting plate and the lower connecting plate; the locking groove is provided with an inwards concave cambered surface, the inner side of the locking block is provided with a convex cambered surface, and the cambered surface of the locking groove is matched with the cambered surface of the locking block.
6. The folding joint arrangement of claim 5, wherein: the cambered surface of the locking block is composed of two cambered rail surfaces (61) which are respectively positioned at two sides of the locking block.
7. The folding joint arrangement of claim 5, wherein: an upper notch (17) is formed in the upper locking groove, and a lower notch (23) is formed in the lower locking groove.
8. The folding joint arrangement of claim 2, wherein: the middle part of the locking block is provided with a connecting hole (62), and the front end of the pull rod penetrates through the connecting hole; the outer side of the locking block is provided with a counter bore (63) with an inward concave arc surface at the connecting hole, the front end of the pull rod is provided with a screw cap (51), and the inner side of the screw cap is provided with an arc surface matched with the inward concave arc surface of the counter bore.
9. The folding joint arrangement of claim 2, wherein: the eccentric cam is provided with two wheel sheets arranged at intervals, and the bolt (43) is hinged in the eccentric holes of the two wheel sheets; the tail end of the pull rod is connected with the bolt.
10. The folding joint arrangement of claim 2, wherein: an arc-shaped gasket (18) is arranged between the eccentric cam and the arc-shaped groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920354133.7U CN209795706U (en) | 2019-03-14 | 2019-03-14 | Folding joint device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920354133.7U CN209795706U (en) | 2019-03-14 | 2019-03-14 | Folding joint device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209795706U true CN209795706U (en) | 2019-12-17 |
Family
ID=68825602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920354133.7U Expired - Fee Related CN209795706U (en) | 2019-03-14 | 2019-03-14 | Folding joint device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209795706U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114152147A (en) * | 2021-12-30 | 2022-03-08 | 中国科学院长春光学精密机械与物理研究所 | Quick clamping mechanism for sighting telescope |
| CN114901546A (en) * | 2021-03-18 | 2022-08-12 | 东莞市凯圣自行车有限公司 | Folding joint |
-
2019
- 2019-03-14 CN CN201920354133.7U patent/CN209795706U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114901546A (en) * | 2021-03-18 | 2022-08-12 | 东莞市凯圣自行车有限公司 | Folding joint |
| CN114901546B (en) * | 2021-03-18 | 2024-04-16 | 东莞市凯圣自行车有限公司 | Folding joint |
| CN114152147A (en) * | 2021-12-30 | 2022-03-08 | 中国科学院长春光学精密机械与物理研究所 | Quick clamping mechanism for sighting telescope |
| CN114152147B (en) * | 2021-12-30 | 2023-12-26 | 中国科学院长春光学精密机械与物理研究所 | Quick clamping mechanism for sighting telescope |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191217 Termination date: 20210314 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |