CN203050334U - Door closer piston forge piece - Google Patents
Door closer piston forge piece Download PDFInfo
- Publication number
- CN203050334U CN203050334U CN 201320019647 CN201320019647U CN203050334U CN 203050334 U CN203050334 U CN 203050334U CN 201320019647 CN201320019647 CN 201320019647 CN 201320019647 U CN201320019647 U CN 201320019647U CN 203050334 U CN203050334 U CN 203050334U
- Authority
- CN
- China
- Prior art keywords
- door closer
- cavity
- closer piston
- cylindrical body
- forge piece
- 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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- Gears, Cams (AREA)
Abstract
The utility model discloses a door closer piston forge piece which comprises a cylindrical body. The left side and the right side of the middle portion of the cylindrical body are respectively provided with a plane groove along the axial direction. A cavity is connected between the plane grooves formed in the left side and the right side in a communicating mode. Two end faces, along the axial direction, of the cavity are arc faces. End faces at two ends, along the radial direction, of the cavity are horizontal planes perpendicular to a central axis of the cylindrical body. According to the structure, the two end faces, along the axial direction, of the cavity are the arc faces so that cutter retraction of a gear hobbing machine is greatly facilitated, reservation of working allowance is not needed when connecting teeth of the gear hobbing machine are machined on the door closer piston forge piece, the needed axial length of the door closer piston forge piece is indirectly shortened, and production cost is effectively reduced.
Description
Technical field
The utility model relates to a kind of door closer piston forging.
Background technology
The basic building block of door closer mainly comprises door closer piston, travelling gear and spring, and when opening the door, travelling gear moves the compression spring door is opened by driving the door closer piston, and the process of closing the door then is the release of the elastic potential energy put aside when opening the door of spring.Applied door closer piston normally adopts to process with the tooth that is connected of travelling gear engagement interlock at the door closer piston forging of forging molding and forms, door closer piston forging is generally cylindrical, it axially offers a cavity on the middle part, described connection tooth is processed by the radially end end face of gear-hobbing machine at described cavity, but because existing door closer piston forging, the axial two ends end face of its upper plenum is horizontal plane, therefore gear-hobbing machine is processed when connecting tooth thereon, need to keep certain allowance, to make things convenient for the gear-hobbing machine withdrawing, thereby just make that also the axial length of described cavity need be than the length of actual needs, also just increase the axial length of door closer piston forging indirectly, caused cost to improve.
Summary of the invention
At the deficiencies in the prior art, the utility model provides a kind of door closer piston forging that can effectively reduce production costs.
For achieving the above object, the utility model provides a kind of door closer piston forging, comprise cylindrical body, left and right sides symmetry offers planar slot on the axial medium position of described cylindrical body, be connected with the cavity of perforation between the planar slot of the described left and right sides, the axial two ends end face of described cavity is arc surface, and the described cavity radially end face at two ends is the horizontal plane perpendicular with the cylindrical body central axis.
The beneficial effects of the utility model are: adopt said structure, the utility model is arranged to arc surface with the axial two ends end face of described cavity, can be convenient to the withdrawing of gear-hobbing machine greatly, described gear-hobbing machine is processed thereon be need not to keep allowance when connecting tooth, thereby also just shortened the axial length of required door closer piston forging indirectly, reduced cost of production effectively.In addition, described cavity is opened on two planar slots, sets up described planar slot and can further reduce raw-material use, further reduces cost of production.
The radius that the utility model can further be set to described arc surface is 8 ~ 15mm, and the axial length of described cavity is 50 ~ 60mm.
The bottom surface degree of depth that the utility model also can further be set to the symmetrically arranged planar slot in the described left and right sides is 5 ~ 10mm.
Description of drawings
Fig. 1 is structural representation of the present utility model.
The specific embodiment
Provided a kind of door closer piston forging as shown in Figure 1, comprise cylindrical body 1, left and right sides symmetry offers planar slot 11 on the axial medium position of described cylindrical body 1, be connected with the cavity 12 of perforation between the planar slot 11 of the described left and right sides, the axial two ends end face 121 of described cavity 12 is arc surface, and the described cavity 12 radially end face 122 at two ends is the horizontal plane perpendicular with cylindrical body 1 central axis.The radius of described arc surface is 8 ~ 15mm, and the axial length of described cavity 12 is 50 ~ 60mm.Bottom surface 111 degree of depth of the symmetrically arranged planar slot 11 in the described left and right sides are 5 ~ 10mm.
Adopt said structure, the utility model is arranged to arc surface with the axial two ends end face 121 of described cavity 12, can be convenient to the withdrawing of gear-hobbing machine greatly, described gear-hobbing machine is processed thereon be need not to keep allowance when connecting tooth, thereby also just shortened the axial length of required door closer piston forging indirectly, reduced cost of production effectively.In addition, described cavity 12 is opened on two planar slots 11, sets up described planar slot 11 and can further reduce raw-material use, further reduces cost of production.
Claims (3)
1. door closer piston forging, comprise cylindrical body, it is characterized in that: left and right sides symmetry offers planar slot on the axial medium position of described cylindrical body, be connected with the cavity of perforation between the planar slot of the described left and right sides, the axial two ends end face of described cavity is arc surface, and the described cavity radially end face at two ends is the horizontal plane perpendicular with the cylindrical body central axis.
2. a kind of door closer piston forging according to claim 1, it is characterized in that: the radius of described arc surface is 8 ~ 15mm, the axial length of described cavity is 50 ~ 60mm.
3. a kind of door closer piston forging according to claim 1, it is characterized in that: the bottom surface degree of depth of the symmetrically arranged planar slot in the described left and right sides is 5 ~ 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320019647 CN203050334U (en) | 2013-01-15 | 2013-01-15 | Door closer piston forge piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320019647 CN203050334U (en) | 2013-01-15 | 2013-01-15 | Door closer piston forge piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203050334U true CN203050334U (en) | 2013-07-10 |
Family
ID=48733300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320019647 Expired - Fee Related CN203050334U (en) | 2013-01-15 | 2013-01-15 | Door closer piston forge piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203050334U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107138925A (en) * | 2017-07-11 | 2017-09-08 | 苏州市万雄机械制造有限公司 | The processing method of door closer piston |
| CN108971908A (en) * | 2018-09-07 | 2018-12-11 | 珠海保税区茵科舒尔特门控科技有限公司 | Door closer piston automatic processing technology and equipment |
-
2013
- 2013-01-15 CN CN 201320019647 patent/CN203050334U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107138925A (en) * | 2017-07-11 | 2017-09-08 | 苏州市万雄机械制造有限公司 | The processing method of door closer piston |
| CN108971908A (en) * | 2018-09-07 | 2018-12-11 | 珠海保税区茵科舒尔特门控科技有限公司 | Door closer piston automatic processing technology and equipment |
| CN108971908B (en) * | 2018-09-07 | 2023-08-08 | 珠海保税区茵科舒尔特门控科技有限公司 | Automatic processing technology and equipment for door closer piston |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20150115 |
|
| EXPY | Termination of patent right or utility model |