CN203603661U - Cam door closer of split piston structure - Google Patents
Cam door closer of split piston structure Download PDFInfo
- Publication number
- CN203603661U CN203603661U CN201320771962.8U CN201320771962U CN203603661U CN 203603661 U CN203603661 U CN 203603661U CN 201320771962 U CN201320771962 U CN 201320771962U CN 203603661 U CN203603661 U CN 203603661U
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- China
- Prior art keywords
- assembly
- cam
- piston
- additional
- door closer
- 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 - Lifetime
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- 230000003044 adaptive effect Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
The utility model discloses a cam door closer of a split piston structure. The cam door closer of the split piston structure comprises a shell and a power piston. The shell is internally provided with a rear cylinder cover assembly, a piston assembly, a roller assembly, a cam assembly and a front cylinder cover assembly. A center hole is formed in the axial direction of the power piston. An additional roller assembly is installed in the radial direction of the power piston. A cavity is formed in the power piston. The piston assembly is provided with a small circular ring suitable for being inserted into the center hole of the power piston. The roller assembly is installed at the end of the small circular ring. The cam assembly is inserted into the cavity. The two sides of a cam in the cam assembly are tightly attached to a roller in the roller assembly and an additional roller in the additional roller assembly. The cam door closer of the split piston structure has the advantages that the side pressure on the inner wall of the shell from the piston assembly is reduced, the degree of abrasion between the piston assembly and the inner wall of the shell is reduced, the normal service life of the door closer is prolonged, and the door closer cannot be out of control.
Description
Technical field
The utility model relates to a kind of cam-type door closer of Split piston structure.
Background technology
In prior art, cam-type door closer only has single piston assembly, as shown in Figure 1, transmission between cam 31 and piston component 41 is to rely on the rigid pressure of cam 31 to roller in piston component 41 upper roller assemblies 42, and causing piston component 41 to move in housing 1 straight hole due to the inequality of cam 31 and lateral pressure is compressional movement by force, wearing and tearing between piston component 41 and housing 1 are particularly more serious in termination 43 its degrees of wear near cam 31, affect the application life of door closer; Particularly, single piston component 41 is after flow speed control valve Close All, although piston component 41 has the elastic pressure of spring to reset, but owing to there being the effect of hydraulic pressure, the speed of service of piston component 41 is very slow, require very high to the symmetry of cam 31 like this, otherwise can cause cam 31 in piston component 41 reseting procedures in neutral, thereby cause function of closing door to lose efficacy, the design of cam 31 like this, manufacture and manufacturability require very high, and cost is very high.
Utility model content
The utility model is according to above not enough, a kind of cam-type door closer of Split piston structure is provided, one-piece piston is designed to dual-piston structure, reduce the lateral pressure of piston component to inner walls, reduce the degree of wear between piston component and inner walls, extend the normal service life of door closer.
The technical solution of the utility model is:
A kind of cam-type door closer of Split piston structure, comprise: housing, back cylinder cover assembly is installed in housing, piston component, roll wheel assembly, cam pack and front end housing assembly, also comprise power piston, this power piston is axially opened centre bore, additional rollers assembly is radially installed, this power piston offers cavity, piston component is provided with the adaptive roundlet ring body that inserts power piston centre bore, roll wheel assembly is installed in the termination of roundlet ring body, cam pack inserts cavity, the additional rollers in roller and the additional rollers assembly in roll wheel assembly is close in the both sides of the cam in cam pack.
Additional rollers assembly is identical with roll wheel assembly principle of the prior art, and piston component is provided with the adaptive roundlet ring body that inserts power piston centre bore, and the adaptation here refers to precision-fit, and for example diameter can have the gap of 0.02-0.1mm left and right.
The additional rollers in roller and the additional rollers assembly in roll wheel assembly is close in the both sides of the cam in cam pack.This structure has guaranteed that cam can be in neutral in reseting procedure, and cam is no matter exist toward the equal damping of which direction.
Further, described additional rollers assembly is additional needle bearing, described additional rollers, additional straight pin and two pad compositions also, additional needle bearing overcoat additional rollers, in wear additional straight pin, the additional straight pin in both sides of additional rollers is set with pad outward, and additional straight pin is fixed on the sidewall of described power piston.
As preferably, the external diameter at described power piston middle part is less than the external diameter at two ends.
As preferably, the end face of described roundlet ring body is provided with two circular arc pieces, and roll wheel assembly is arranged on these two circular arc pieces.
The utlity model has and reduce the lateral pressure of piston component to inner walls, reduce the degree of wear between piston component and inner walls, extend the normal service life of door closer, the beneficial effect that door closer can be not out of control.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of prior art.
Fig. 2 is the utility model Split piston structural representation.
The specific embodiment
Now by reference to the accompanying drawings the utility model is further described:
As shown in the figure, a kind of cam-type door closer of Split piston structure, comprise: housing 1, back cylinder cover assembly 2 is installed in housing 1, piston component 41, roll wheel assembly 42, cam pack 3 and front end housing assembly 5, also comprise power piston 73, this power piston 73 is axially opened centre bore, additional rollers assembly 6 is radially installed, this power piston 73 offers cavity 71, piston component 41 is provided with the adaptive roundlet ring body 44 that inserts power piston 67 centre bores, roll wheel assembly 42 is installed in the termination of roundlet ring body 44, cam pack 3 inserts cavity 71, the additional rollers 63 in roller and the additional rollers assembly 6 in roll wheel assembly 42 is close in the both sides of the cam 31 in cam pack 3.
Described additional rollers assembly 6 also additional needle bearing 64, described additional rollers 63, additional straight pin 61 and two pads 62 forms, additional needle bearing 64 overcoat additional rollers 63, in wear additional straight pin 61, the outer pad 61 that is set with of the additional straight pin 61 in both sides of additional rollers 63, additional straight pin 61 is fixed on the sidewall of described power piston 73.
The external diameter at described power piston 73 middle parts 72 is less than the external diameter at two ends.
The end face of described roundlet ring body 44 is provided with two circular arc pieces 441, and roll wheel assembly 42 is arranged on these two circular arc pieces 441.
Claims (4)
1. the cam-type door closer of a Split piston structure, comprise: housing (1), back cylinder cover assembly (2) is installed in housing (1), piston component (41), roll wheel assembly (42), cam pack (3) and front end housing assembly (5), it is characterized in that, also comprise power piston (73), this power piston (73) is axially opened centre bore, additional rollers assembly (6) is radially installed, this power piston (73) offers cavity (71), piston component (41) is provided with the adaptive roundlet ring body (44) that inserts power piston (67) centre bore, roll wheel assembly (42) is installed in the termination of roundlet ring body (44), cam pack (3) inserts cavity (71), the additional rollers (63) in roller and the additional rollers assembly (6) in roll wheel assembly (42) is close in the both sides of the cam (31) in cam pack (3).
2. the cam-type door closer of a kind of Split piston structure as claimed in claim 1, it is characterized in that, described additional rollers assembly (6) is additional needle bearing (64), described additional rollers (63), additional straight pin (61) and two pads (62) composition also, additional needle bearing (64) overcoat additional rollers (63), in wear additional straight pin (61), the outer pad (61) that is set with of the additional straight pin (61) in both sides of additional rollers (63), additional straight pin (61) is fixed on the sidewall of described power piston (73).
3. the cam-type door closer of a kind of Split piston structure as claimed in claim 1 or 2, is characterized in that, the external diameter at described power piston (73) middle part (72) is less than the external diameter at two ends.
4. the cam-type door closer of a kind of Split piston structure as claimed in claim 1 or 2, is characterized in that, the end face of described roundlet ring body (44) is provided with two circular arc pieces (441), and roll wheel assembly (42) is arranged on these two circular arc pieces (441).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320771962.8U CN203603661U (en) | 2013-11-28 | 2013-11-28 | Cam door closer of split piston structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320771962.8U CN203603661U (en) | 2013-11-28 | 2013-11-28 | Cam door closer of split piston structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203603661U true CN203603661U (en) | 2014-05-21 |
Family
ID=50716340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320771962.8U Expired - Lifetime CN203603661U (en) | 2013-11-28 | 2013-11-28 | Cam door closer of split piston structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203603661U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104328967A (en) * | 2014-10-14 | 2015-02-04 | 茵科门控（珠海保税区）有限公司 | Cam shaft door closer |
-
2013
- 2013-11-28 CN CN201320771962.8U patent/CN203603661U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104328967A (en) * | 2014-10-14 | 2015-02-04 | 茵科门控（珠海保税区）有限公司 | Cam shaft door closer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210928 Address after: 323903 No. 8, Gaogang Industrial Zone, economic development zone, Wenxi Town, Qingtian County, Lishui City, Zhejiang Province Patentee after: Zhejiang Aibo Security Technology Co.,Ltd. Address before: 323903 Gaogang Industrial Zone, Qingtian Economic Development Zone, Lishui City, Zhejiang Province Patentee before: ZHEJIANG AIBO DOOR HARDWARE Co.,Ltd. |