CN203361838U - Door closing device - Google Patents
Door closing device Download PDFInfo
- Publication number
- CN203361838U CN203361838U CN2013203663746U CN201320366374U CN203361838U CN 203361838 U CN203361838 U CN 203361838U CN 2013203663746 U CN2013203663746 U CN 2013203663746U CN 201320366374 U CN201320366374 U CN 201320366374U CN 203361838 U CN203361838 U CN 203361838U
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- CN
- China
- Prior art keywords
- boss
- sealing ring
- inner chamber
- door closer
- housing
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a door closing device. The door closing device comprises a shell with an inner cavity, two side covers arranged on the shell, and a gear shaft which is rotationally arranged in the two side covers in a penetrating mode and penetrates through the inner cavity, wherein the inner cavity is filled with hydraulic oil, the side covers are respectively provided with a body and a circle of flanges formed in the circumferential direction of the body, the flanges are fixedly arranged on the bodies and face toward the inner cavity, each flange comprises a plurality of bosses distributed in a stepped shape, the outer diameters of the bosses distributed from the inner cavity to the bodies of the side covers are gradually increased, through holes used for mounting the side covers are formed in the shell, the through holes are provided with a plurality of steeped holes matched with the bosses, the diameters of the stepped holes distributed from the inner cavity to the bodies of the side covers are gradually increased, and the flanges are arranged in the through holes in a clamped mode. The door closing device of the novel sealing structure has the good sealing effect.
Description
Technical field
the utility model relates to a kind of door closer, particularly a kind of door closer with Novel side cover locking structure.
Background technology
the basic role of door closer is that door is closed automatically, can also steadily close to protect doorframe and door body.The basic building block of door closer has housing, tooth bar plunger, the travelling gear with cavity.The gear shaft of travelling gear is located in the cavity of housing rotationally, and gear driven tooth bar plunger along continuous straight runs moves, and in the cavity of housing, is full of hydraulic oil.In prior art, the gear shaft two ends are located in rotationally respectively Gai Zhong， limit, two limits lid and are connected with housing.The limit lid is threaded connection with housing, but its processing technology is comparatively complicated, not difference machining screw on limit lid and housing; In addition, usually need to be by the fastening limit of special spanner lid, effort comparatively, loss spanner very easily, operating personnel need the size of corresponding sides lid to find corresponding spanner simultaneously, comparatively time-consuming.Obviously can find out complex procedures, waste time and energy.
Summary of the invention
for the problems referred to above, the purpose of this utility model is to provide a kind of door closer with novel sealing structure, and it has sealing effectiveness preferably.
for solving the problems of the technologies described above, the technical solution adopted in the utility model is:
a kind of door closer, comprise the housing with inner chamber, be arranged on two limit lids on described housing, be located in rotationally in the lid of described two limits and through the gear shaft of described inner chamber, be full of hydraulic oil in described inner chamber, the circle flange that described limit lid has body and forms along the circumferencial direction of described body, described flange is fixedly installed on described body and towards described inner chamber, described flange comprises a plurality of boss of stepped distribution, the external diameter of a plurality of boss that the body to described limit lid distributes from described inner chamber progressively increases, on described housing, be provided with for the through hole of described limit lid is installed, described through hole has a plurality of stepped holes that match with described a plurality of boss, the aperture of described a plurality of stepped holes that distribute to described limit lid body from described inner chamber increases gradually, described flange is fastened in described through hole.
preferably, described housing also have be arranged on the described through hole outside for preventing that the limit lid breaks away from the card-tight part of described housing, the outer wall of described bail wire and described boss is inconsistent.
more preferably, described card-tight part roughly in the form of a ring and its aperture be less than the maximum value of boss external diameter.
preferably, described boss is three.
preferably, it also comprises the sealing ring be arranged between described gear shaft and described limit lid.
in some preferred embodiment, described gear shaft offers along its circumferencial direction the groove that the shape with described sealing ring is complementary, and described sealing ring is arranged between described groove and limit lid.Be set to by closing the gear shaft shape shape be complementary with sealing ring, increased the contact area with sealing ring; Contact with the point of gear shaft, limit lid compared to sealing ring in prior art, by offer the groove that holds sealing ring in gear shaft, sealing ring has been played to a position-limiting action, its sealing effectiveness is more stable.
more preferably, the junction of described body and described flange is formed with and the contacted corner part of described sealing ring, and the shape of described corner part inwall and the shape of described sealing ring are complementary.The shape of covering the inwall of corner part by limit is set to the shape be complementary with sealing ring, has further increased the contact area with sealing ring.
the utility model adopts above structure, there is following advantage: be threaded compared to of the prior art, limit lid and being connected by stepped hole and the flange with a plurality of boss of housing are riveted mutually, and the processing of boss is more simpler than the manufacturing procedure of screw thread, more time saving and energy saving; Add man-hour, do not need the fastening limit of special spanner lid, only the boss of limit lid need be put into to the through hole of housing, be pressed in corresponding stepped hole with edge knurling machine, saved operation.
The accompanying drawing explanation
the structural representation that accompanying drawing 1 is a kind of preferred embodiment of the present utility model;
the structural representation that accompanying drawing 2 is limit of the present utility model lid.
in accompanying drawing: 1, housing; 11, inner chamber; 12, through hole; 13, card-tight part; 2, Bian Gai; 21, body; 22, flange; 221, boss; 23, corner part; 3, gear shaft; 31, gear; 32, groove; 4, sealing ring.
The specific embodiment
below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, thereby so that advantage of the present utility model and feature can be easier to be those skilled in the art will recognize that, protection domain of the present utility model is made to more explicit defining.
Embodiment
with reference to accompanying drawing 1, shown in accompanying drawing 2, a kind of door closer with novel sealing structure, comprise the housing 1 with inner chamber 11, but be arranged in described inner chamber 11 and piston body (not shown) that along continuous straight runs moves, be arranged on described housing 1 and two limits lids 2, be located in rotationally the gear shaft 3 in described two limits lid 2 and be arranged on described gear shaft 3 and cover the sealing ring 4 between 2 with described limit, be full of hydraulic oil in described inner chamber 11, be provided with the gear 31 be meshed with described piston body on described gear shaft 3, described limit lid 2 comprises body 21, the circle flange 22 formed along the circumferencial direction of described body 21, described flange 22 is fixedly installed on described body 21 and towards described inner chamber 11, described flange 22 comprises three boss 221 of stepped distribution, the external diameter of three boss 221 that the body 21 to described limit lid 2 distributes from described inner chamber 11 progressively increases, on described housing 1, be provided with for the second through hole 12 of described limit lid 2 is installed, described the second through hole 12 has a plurality of stepped holes that match with described a plurality of boss 221, the aperture of described a plurality of stepped holes that distribute to described limit lid body 21 from described inner chamber 11 increases gradually, described flange 22 is fastened in described the second through hole 12.The axis of the axis of piston body and gear shaft 3 is perpendicular, along with the rotation of gear 31, piston body can be in inner chamber along continuous straight runs reciprocating.
described housing 1 also have be arranged on described second through hole 12 outsides for preventing that limit lid 2 breaks away from the card-tight part 13 of described housing 1, described card-tight part 13 is inconsistent with the outer wall of described boss 221.Described card-tight part 13 roughly in the form of a ring and its aperture be less than the maximum value of boss 221 external diameters.Limit lid 2 changes riveted joint into being connected by traditional being threaded of housing 1, and stepped hole and boss are more simple compared to the processing of screw thread, have reduced manufacturing procedure.Add man-hour, be pressed in the second through hole of housing by the edge knurling machine flange that just limit is covered, card-tight part, by limit lid chucking, prevents that it breaks away from housing.
described gear shaft 3 offers along its circumferencial direction the groove 32 that the shape with described sealing ring 4 is complementary, and described sealing ring 4 is arranged between described groove 32 and limit lid 2.Be set to by closing the gear shaft shape shape be complementary with sealing ring, increased the contact area with sealing ring; Contact with the point of gear shaft, limit lid compared to sealing ring in prior art, by offer the groove that holds sealing ring in gear shaft, sealing ring has been played to a position-limiting action, its sealing effectiveness is more stable.
shown in accompanying drawing 2, described limit lid 2 comprises body 21 with first through hole 211, the circle flange 22 formed along the circumferencial direction of described body 21, described flange 22 is fixedly installed on described body 21 and towards described inner chamber 11, described body 21 is formed with and the contacted corner part 23 of described sealing ring 4 with the junction of described flange 22, and the shape of described corner part 23 inwalls and the shape of described sealing ring 4 are complementary.The shape of covering the inwall of corner part by limit is set to the shape be complementary with sealing ring, has further increased the contact area with sealing ring.
in the present embodiment, the cross section of described sealing ring 4 is circular, and therefore the shape of described corner part 23 inwalls roughly is circular arc.Described groove 32 is also circular arc along the cross section of the axis direction of described gear shaft 3.
the utility model adopts above structure, there is following advantage: be threaded compared to of the prior art, limit lid and being connected by stepped hole and the flange with a plurality of boss of housing are riveted mutually, and the processing of boss is more simpler than the manufacturing procedure of screw thread, more time saving and energy saving; Add man-hour, do not need the fastening limit of special spanner lid, only the boss of limit lid need be put into to the through hole of housing, be pressed in corresponding stepped hole with edge knurling machine, saved operation.
above-described embodiment is only explanation technical conceive of the present utility model and characteristics; it is a kind of preferred embodiment; its purpose is to allow the person skilled in the art can understand content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalences of doing according to Spirit Essence of the present utility model change or modify, within all should being encompassed in protection domain of the present utility model.
Claims (7)
1. a door closer, comprise the housing with inner chamber, be arranged on two limit lids on described housing, be located in rotationally in the lid of described two limits and through the gear shaft of described inner chamber, be full of hydraulic oil in described inner chamber, it is characterized in that: the circle flange that described limit lid has body and forms along the circumferencial direction of described body, described flange is fixedly installed on described body and towards described inner chamber, described flange comprises a plurality of boss of stepped distribution, the external diameter of a plurality of boss that the body to described limit lid distributes from described inner chamber progressively increases, on described housing, be provided with for the through hole of described limit lid is installed, described through hole has a plurality of stepped holes that match with described a plurality of boss, the aperture of described a plurality of stepped holes that distribute to described limit lid body from described inner chamber increases gradually, described flange is fastened in described through hole.
2. door closer according to claim 1 is characterized in that: described housing also have be arranged on the described through hole outside for preventing that the limit lid breaks away from the card-tight part of described housing, the outer wall of described bail wire and described boss is inconsistent.
3. door closer according to claim 2 is characterized in that: described card-tight part roughly in the form of a ring and its aperture be less than the maximum value of boss external diameter.
4. door closer according to claim 1, it is characterized in that: described boss is three.
5. door closer according to claim 1 is characterized in that: it also comprises the sealing ring be arranged between described gear shaft and described limit lid.
6. door closer according to claim 5 is characterized in that: described gear shaft offers along its circumferencial direction the groove that the shape with described sealing ring is complementary, and described sealing ring is arranged between described groove and limit lid.
7. the door closer with novel sealing structure according to claim 5, it is characterized in that: the junction of described body and described flange is formed with and the contacted corner part of described sealing ring, and the shape of described corner part inwall and the shape of described sealing ring are complementary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203663746U CN203361838U (en) | 2013-06-25 | 2013-06-25 | Door closing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203663746U CN203361838U (en) | 2013-06-25 | 2013-06-25 | Door closing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203361838U true CN203361838U (en) | 2013-12-25 |
Family
ID=49809624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203663746U Withdrawn - After Issue CN203361838U (en) | 2013-06-25 | 2013-06-25 | Door closing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203361838U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306564A (en) * | 2013-06-25 | 2013-09-18 | 苏州市富尔达实业有限公司 | Door closer |
-
2013
- 2013-06-25 CN CN2013203663746U patent/CN203361838U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306564A (en) * | 2013-06-25 | 2013-09-18 | 苏州市富尔达实业有限公司 | Door closer |
| CN103306564B (en) * | 2013-06-25 | 2016-03-02 | 苏州市富尔达科技股份有限公司 | Door closer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Shuangfeng town of Oujiang road Suzhou city Jiangsu province 215416 Taicang City No. 1 Patentee after: Suzhou Fuerda Industry Co., Ltd. Address before: Shuangfeng town of Oujiang road Suzhou city Jiangsu province 215416 Taicang City No. 1 Patentee before: Suzhou Fuerda Industry Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20131225 Effective date of abandoning: 20160302 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |