CN202064741U - Buffer type door latch - Google Patents
Buffer type door latch Download PDFInfo
- Publication number
- CN202064741U CN202064741U CN2011201147397U CN201120114739U CN202064741U CN 202064741 U CN202064741 U CN 202064741U CN 2011201147397 U CN2011201147397 U CN 2011201147397U CN 201120114739 U CN201120114739 U CN 201120114739U CN 202064741 U CN202064741 U CN 202064741U
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- CN
- China
- Prior art keywords
- door
- piston
- cylinder
- air duct
- elastic piston
- 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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- Fluid-Damping Devices (AREA)
Abstract
A buffer type door latch comprises a cylinder arranged on a fixed end and an elastic piston arranged in the cylinder; an extension end of the elastic piston which is extended from a cylinder body is a door latch contact, a return spring which acts on the elastic spring is arranged in the cylinder body; and a one-way air inlet valve, of which an air inlet is towards the cylinder back and an air outlet is connected with a cavity in front of the cylinder, is arranged on the elastic piston. The utility model effectively reduces an acting force between a door body and the door latch when opening the door, and reduces a noise generated when contacting, and the door latch can be arranged on side parts of a door frame, an impact force between the door body and the door frame when closing the door can be reduced through the buffer effect, and meanwhile, the utility model is simple in structure and convenient in use, has safety and reliability, and also has a greater promotion and application value.
Description
Technical field
The utility model relates to a kind of buffer-type door knob.
Background technology
At present, the door knob of selling on the market is of a great variety, of all kinds, have the magnetic gate of suction to bump, snap ring door knob or the like is arranged, these door knobs generally speaking all have an effect, stay open state at the relief door that opens the door exactly, but the major defect that these door knobs exist is: open when contacting with door knob at door and do not have buffering, so not only cause the door knob rapid wear easily, and noise is bigger when opening the door; These door knobs are not because of existing cushioning effect, so the situation that can not be applied to close the door.
The utility model content
The purpose of this utility model is to provide a kind of buffer-type door knob, this door knob simple structure, and good buffer effect, two kinds of situations can be used for opening the door, close the door.
The technical solution of the utility model is: a kind of buffer-type door knob, the external part that stretches out in cylinder block of its elastic piston is the door knob contact, be provided with the back-moving spring that acts on elastic piston in the described cylinder block, described elastic piston is provided with the breather cheek valve that air inlet port links to each other with piston front side cavity towards piston rear side cavity gas outlet, has air duct in the body of the piston rod of described elastic piston, air duct rear side port is towards the rear side cavity of piston, the sidewall of described air duct is provided with the by-pass flow pore, described breather cheek valve is located in the air duct of by-pass flow pore front side, and described breather cheek valve constitutes by being located at the venthole on the air duct sidewall and being located at the elasticity sliding pin that opens and closes in order to the control venthole on the air duct sidewall.
The beneficial effects of the utility model are: by the cushioning effect of air in the cylinder and back-moving spring, reduced when door is opened effectively and the active force between the door knob, reduced the noise that sends because of collision; This door knob also can be installed in the doorframe sidepiece, by cushioning effect, reduces the impact of Men Tiyu doorframe at closing time, and is simultaneously simple in structure, easy to use.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
Embodiment is as shown in Figure 1: a kind of buffer-type door knob, the external part that stretches out in cylinder l body of its elastic piston 2 is a door knob contact 3, be provided with the back-moving spring 4 that acts on elastic piston 2 in described cylinder 1 body, described elastic piston 2 is provided with the breather cheek valve that air inlet port links to each other with piston 2 front side cavitys towards piston 2 rear side cavity gas outlets, has air duct 6 in the body of the piston rod 5 of described elastic piston 2, air duct 6 rear side ports are towards the rear side cavity of piston 2, the sidewall of described air duct 6 is provided with by-pass flow pore 7, described breather cheek valve is located in the air duct 6 of by-pass flow pore 7 front sides, and described breather cheek valve constitutes by being located at the venthole 7 on air duct 6 sidewalls and being located at the elasticity sliding pin 9 that opens and closes in order to control venthole 8 on air duct 6 sidewalls.
In the work, opposite house touched 3 pressure when Yin Men opened, make piston rod 5 drive elastic pistons 2 to the rear side cavity of cylinder 1 move and pressed home spring 4 and chamber in air, at this moment, because both sides cavity inner air pressure imbalance in the cylinder 1, air promotes elasticity sliding pin 9 through air duct 6 and crosses venthole 8 in the side cavity, by by-pass flow pore 7 and venthole 8 to front side cavity discharged air (door knob of this moment will produce cushioning effect to the door body that clashes into it), under the effect of spring 10, after the pressure differential of both sides cavity reduced, elasticity sliding pin 9 was closed venthole 8 again; After the ambient pressure disappearance that the door body produces, under the effect of back-moving spring 4, elastic piston 2 slowly resets, and air slowly enters the rear side cavity by by-pass flow pore 7 through air duct 6 in the cavity of front side, thereby realizes the cushioning effect of door knob.
Claims (1)
1. buffer-type door knob, it is characterized in that: the external part that stretches out in cylinder (l) body of its elastic piston (2) is door knob contact (3), be provided with the back-moving spring (4) that acts on elastic piston (2) in described cylinder (1) body, described elastic piston (2) is provided with the breather cheek valve that air inlet port links to each other with piston (2) front side cavity towards piston (2) rear side cavity gas outlet, has air duct (6) in the body of the piston rod (5) of described elastic piston (2), air duct (6) rear side port is towards the rear side cavity of piston (2), the sidewall of described air duct (6) is provided with by-pass flow pore (7), described breather cheek valve is located in the air duct (6) of by-pass flow pore (7) front side, and described breather cheek valve constitutes by being located at the venthole (7) on air duct (6) sidewall and being located at the elasticity sliding pin (9) that opens and closes in order to control venthole (8) on air duct (6) sidewall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201147397U CN202064741U (en) | 2011-04-19 | 2011-04-19 | Buffer type door latch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201147397U CN202064741U (en) | 2011-04-19 | 2011-04-19 | Buffer type door latch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202064741U true CN202064741U (en) | 2011-12-07 |
Family
ID=45058609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201147397U Expired - Fee Related CN202064741U (en) | 2011-04-19 | 2011-04-19 | Buffer type door latch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202064741U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883665A (en) * | 2014-04-15 | 2014-06-25 | 叶晓锋 | Instantaneous speed reducer |
| CN103982097A (en) * | 2014-05-26 | 2014-08-13 | 舟山市绿港机械配件有限公司 | Push-pull automatic door stopper |
| CN106639690A (en) * | 2017-02-28 | 2017-05-10 | 邢炜晨 | Air pressure type self-positioning door stopper |
| CN107013119A (en) * | 2017-05-31 | 2017-08-04 | 江苏精盾节能科技有限公司 | A kind of door collides way to play for time with doorframe |
| CN107023237A (en) * | 2017-05-31 | 2017-08-08 | 江苏精盾节能科技有限公司 | A kind of door collides buffer structure with doorframe |
| CN110656828A (en) * | 2019-05-06 | 2020-01-07 | 陈超 | Door stopper with buffer function |
-
2011
- 2011-04-19 CN CN2011201147397U patent/CN202064741U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883665A (en) * | 2014-04-15 | 2014-06-25 | 叶晓锋 | Instantaneous speed reducer |
| CN103982097A (en) * | 2014-05-26 | 2014-08-13 | 舟山市绿港机械配件有限公司 | Push-pull automatic door stopper |
| CN103982097B (en) * | 2014-05-26 | 2016-08-24 | 舟山市绿港机械配件有限公司 | A kind of plug-type automatic door-inhale |
| CN106639690A (en) * | 2017-02-28 | 2017-05-10 | 邢炜晨 | Air pressure type self-positioning door stopper |
| CN107013119A (en) * | 2017-05-31 | 2017-08-04 | 江苏精盾节能科技有限公司 | A kind of door collides way to play for time with doorframe |
| CN107023237A (en) * | 2017-05-31 | 2017-08-08 | 江苏精盾节能科技有限公司 | A kind of door collides buffer structure with doorframe |
| CN110656828A (en) * | 2019-05-06 | 2020-01-07 | 陈超 | Door stopper with buffer function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20120419 |