CN2937697Y - Locking device of folding joint - Google Patents
Locking device of folding joint Download PDFInfo
- Publication number
- CN2937697Y CN2937697Y CN 200620059044 CN200620059044U CN2937697Y CN 2937697 Y CN2937697 Y CN 2937697Y CN 200620059044 CN200620059044 CN 200620059044 CN 200620059044 U CN200620059044 U CN 200620059044U CN 2937697 Y CN2937697 Y CN 2937697Y
- Authority
- CN
- China
- Prior art keywords
- connecting plates
- connecting rod
- folding joint
- locking device
- locking
- 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
Links
Abstract
The utility model discloses a folding joint locking device, including two connecting plates which can be fixed by a folding member bar. The one side of the two connecting plates are articulated with each other, and the other side of the two connecting plates are respectively articulated with a connecting rod; the other end of the two connecting rods are articulated with each other, wherein, the length c of one connecting rod is longer than that of another connecting rod a; when the two connecting rods are closuring, then the distance of the gemel center P2 and P3 of the two connecting plates and the tow connecting rods is b, wherein, a plus b is more than or equal to c. Owing to the structures mentioned above lead to the two connecting rods to form a dead point in the course of locking up, so the two connecting plates in a state of closuring can be grasp tightly and what you need is to pull the handle slightly so as to make the handle to arrive at the place of dead point. The utility model is only composed of several parts articulated with each other, so the structure is simple with a convenient operation; moreover, the effect of locking up is reliable.
Description
Technical field:
The utility model relates to the locking device of the folding joint, particularly folding joint of folding bicycle use.
Technical background:
Folding bicycle is in deployed condition, needs two connecting plates that are hinged of folding joint are clamped or locking, makes whole folding joint have enough rigidity.The locking device of existing folding joint has multiple structural type.Easy to operate and the reliable lock of the locking device of some folding joint, but structure is complicated partially, and cost is higher.Though also some folding joint is simple in structure, operation is trouble, or the rigidity of the whole folding joint in locking back is on the weak side.
Technological scheme:
The purpose of this utility model be provide a kind of both simple in structure, easy to operate again and make the locking device of joint better rigidity folding joint after locking.
The locking device of folding joint described in the utility model, have two can be folded the connecting plate that rod member fixes, two connecting plates are hinged in a side, the opposite side of two connecting plates is distinguished a hinged connecting rod separately, the other end of two connecting rods is hinged, and the length c of one of them connecting rod is greater than the length a of another connecting rod, and two connecting plates are when closing up state, distance between the hinge center of two connecting plates and connecting rod is b, wherein a+b 〉=c.
Folding joint locking device described in the utility model, two connecting plates and two connecting rod series connection that are uneven in length are hinged, constitute four-bar linkage structure.When two connecting plates are in when closing up state, two connecting rods side by side and lock two connecting plates.Because an end of two connecting rods is hinged, distance between the hinge center of the other end two connecting plates and two connecting rods is b, and the length a of short connecting rod and hinge centre distance b sum are greater than the length c of (or equaling) long connecting rod, then in the two connecting rods locking process side by side one " dead point " arranged, slightly firmly pull handle, make it to be in the dead center position, or slightly surpass the dead center position, two connecting plates can be held locking closing up state.Oppositely pull handle and can remove clamping to two connecting plates, opening joint is collapsible connected rod member.Described folding joint locking device only constitutes by several parts are hinged, and is simple in structure, the locking of joint or open swift to operate, convenient, and reliable lock.
Description of drawings:
Fig. 1 is the open mode schematic representation of device described in the utility model;
Fig. 2 is the locking state schematic representation of device described in the utility model.
Embodiment:
A side of two fixing connecting plates 2 is hinged with being connected rod member 1, and the opposite side of each connecting plate is a hinged connecting rod 3,4 respectively, forms hinge center P 2, P3.The other end of two connecting rods is hinged, forms hinge center P 1.The effective length c of a connecting rod 3 (distance of P1, P3) is greater than the effective length a of another connecting rod 4 (distance of P1, P2).When two connecting plates 2 close up, two connecting rods side by side and lock two connecting plates, distance between hinge center P 2, the P3 is b, the size relationship that should guarantee two connecting rods, 3,4 length a, c and distance b satisfies a+b 〉=c, then in pulling two connecting rods 3,4 and locking process, when needing only hinge center P 1, P2, P3 three point on a straight line, be " dead point ", slightly firmly pull handle, make it to be in or omit above " dead point " position, can two connecting plate 2 clampings are fastening.Handle too surpasses the dead center position, and the clamping degree will be weakened, thereby reduces the connection rigidity of folding joint, thereby after handle crossed " dead point ", the angle α of line was advisable less than 10 ° when connecting rod center line and P1, P2, P3 three point on a straight line.
Claims (2)
1. the locking device of a folding joint, have two can be folded the connecting plate (2) that rod member (1) fixes, two connecting plates (2) are hinged in a side, the opposite side of two connecting plates is distinguished a hinged connecting rod (3), (4) separately, the other end of two connecting rods (3), (4) is hinged, it is characterized in that: the length c of one of them connecting rod (3) is greater than the length a of another connecting rod, two connecting plates (2) are when closing up state, hinge center P 2, the distance between the P3 of two connecting plates and connecting rod (3), (4) are b, wherein a+b 〉=c.
2. the locking device of folding joint according to claim 1, it is characterized in that: after handle was crossed " dead point ", the angle α of line was less than 10 ° when connecting rod center line and P1, P2, P3 three point on a straight line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620059044 CN2937697Y (en) | 2006-05-17 | 2006-05-17 | Locking device of folding joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620059044 CN2937697Y (en) | 2006-05-17 | 2006-05-17 | Locking device of folding joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2937697Y true CN2937697Y (en) | 2007-08-22 |
Family
ID=38361724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620059044 Expired - Fee Related CN2937697Y (en) | 2006-05-17 | 2006-05-17 | Locking device of folding joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2937697Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2551831A (en) * | 2016-06-30 | 2018-01-03 | Birdon (Uk) Ltd | Folding mast systems for watercraft |
-
2006
- 2006-05-17 CN CN 200620059044 patent/CN2937697Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2551831A (en) * | 2016-06-30 | 2018-01-03 | Birdon (Uk) Ltd | Folding mast systems for watercraft |
| GB2551831B (en) * | 2016-06-30 | 2018-12-19 | Birdon Uk Ltd | Folding mast systems for watercraft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C35 | Partial or whole invalidation of patent or utility model | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20090611 Decision number of declaring invalidation: 13467 Granted publication date: 20070822 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070822 Termination date: 20100517 |