CN218541934U - Air pressure damping type automatic door closer - Google Patents
Air pressure damping type automatic door closer Download PDFInfo
- Publication number
- CN218541934U CN218541934U CN202222862999.3U CN202222862999U CN218541934U CN 218541934 U CN218541934 U CN 218541934U CN 202222862999 U CN202222862999 U CN 202222862999U CN 218541934 U CN218541934 U CN 218541934U
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- energy accumulator
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Abstract
The utility model discloses an air pressure damping type automatic door closer, which comprises a flat rod A, a flat rod B, an energy accumulator and a fixing piece; the tail ends of the flat rod A and the flat rod B are hinged with each other, the head end of the flat rod A is connected with the fixing piece, and the head end of the flat rod B is connected with the energy accumulator; the energy accumulator comprises an air cylinder and a double-end piston in the air cylinder, a rack is arranged in the middle of the double-end piston for connection, a gear column part which is in transmission with the rack is vertically arranged in the middle of the air cylinder, and the top end of the gear column part is fixed with the flat rod B; when the flat rod B is positioned at the position vertical to the energy accumulator, the double-head piston is close to one end of the cylinder. The utility model discloses a two-way cylinder structure, double-end piston are located the one end of cylinder, open the back when the door, and double-end piston removes to the cylinder other end to form positive pressure in the one end of cylinder, the other end forms the pulling force in the negative direction, can produce bigger displacement under equal displacement, thereby reply the bigger door frame of quality at littleer small, adopt gear post and rack drive, structural also simpler.
Description
Technical Field
The utility model relates to a door closer, in particular to automatic door closer of atmospheric pressure damping formula.
Background
The door closer is a device capable of automatically closing a door, and is particularly used for doors such as fire doors and the like which need to be closed for a long time, and the situation that the doors are forgotten to be closed after being opened by people is avoided. Present door closer divide into damping formula and spring answer formula, all be through mechanical transmission with the opening movement of door convert the piston rod drive motion of cylinder or hydraulic stem to with damping formula to carry out the energy storage, but this kind of structure is comparatively complicated not only, and one-way compression moreover utilizes limitedly to the volume of cylinder or hydraulic stem, needs cylinder or the hydraulic stem of bigger volume to the great door plant of some quality just can drive.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide an automatic door closer of atmospheric pressure damping formula, its simple structure, under equal volume, its energy storage reply dynamics is stronger moreover.
In order to solve the technical problem, the utility model discloses a technical scheme does:
an air pressure damping type automatic door closer comprises a flat rod A, a flat rod B, an energy accumulator and a fixing piece; the tail ends of the flat rod A and the flat rod B are hinged with each other, the head end of the flat rod A is connected with the fixing piece, and the head end of the flat rod B is connected with the energy accumulator; the energy accumulator comprises an air cylinder and a double-head piston in the air cylinder, a rack is arranged in the middle of the double-head piston for connection, a gear column part which is in transmission with the rack is vertically arranged in the middle of the air cylinder, and the top end of the gear column part is fixed with the flat rod B; when the flat rod B is positioned at the position vertical to the energy accumulator, the double-headed piston is close to one end of the cylinder.
Furthermore, the mounting is U type metal sheet, and flat bar A's head end is inserted in the middle of the U type metal sheet and is fixed, runs through on U type metal sheet surface and sets up a plurality of fixed screw.
Furthermore, a vertical fixing plate is arranged at the front end of the air cylinder.
Further, both ends of cylinder all set up detachable thread sealing spare.
Furthermore, two ends of the gear column part are fixed with the cylinder through bearings, and end covers are arranged on the outer sides of the bearings.
The utility model discloses an useful part lies in:
the utility model discloses a two-way cylinder structure, the cylinder is fixed with the door plant, mounting and door frame top are fixed, when the door is in the time of closing, double-end piston is located the one end of cylinder, after the door is opened, it is rotatory each other around gear post part to drive the cylinder, the rack of gear post part drive double-end piston, make double-end piston remove to the cylinder other end, thereby form positive pressure in the one end of cylinder, the other end forms the pulling force in the negative direction, can produce bigger displacement under equal displacement, thereby reply the bigger door frame of quality at littleer small, adopt gear post and rack drive, it is also simpler structurally.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a cross-sectional view of the accumulator;
fig. 3 is a structural schematic diagram of a gear column component.
In the figure, 1-flat rod A, 2-flat rod B, 3-fixing piece, 31-fixing screw hole, 4-energy accumulator, 41-air cylinder, 42-fixing plate, 43-thread sealing piece, 5-double-head piston, 51-rack, 6-gear column component, 61-bearing and 62-end cover.
Detailed Description
The following description will further explain embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1-3:
an air pressure damping type automatic door closer comprises a flat rod A1, a flat rod B2, an energy accumulator 4 and a fixing piece 3; the tail ends of the flat rod A1 and the flat rod B2 are hinged with each other, the head end of the flat rod A1 is connected with the fixing piece 3, and the head end of the flat rod B2 is connected with the energy storage device 4; the energy accumulator 4 comprises a cylinder 41 and a double-head piston 5 in the cylinder 41, a rack 51 is arranged in the middle of the double-head piston 5 for connection, a gear column part 6 which is driven by the rack 51 is vertically arranged in the middle of the cylinder 41, and the top end of the gear column part 6 is fixed with the flat bar B2; when the flat bar B2 is positioned at the position vertical to the energy storage device 4, the double-headed piston 5 is close to one end of the cylinder 41.
The utility model discloses a two-way cylinder 41 structure, cylinder 41 is fixed with the door plant, mounting 3 is fixed with the doorframe top, when the door is in the time of closing, double-end piston 5 is located cylinder 41's one end, after the door is opened, it is rotatory each other around gear post part 6 to drive cylinder 41, gear post part 6 drives double-end piston 5's rack 51, make double-end piston 5 remove to the cylinder 41 other end, thereby one end at cylinder 41 forms positive pressure, the other end forms the pulling force of negative-going direction, can produce bigger displacement under equal displacement, thereby reply the bigger door frame of quality at littleer small, adopt gear post and rack 51 drive, it is also simpler structurally.
The fixing part 3 can be a U-shaped metal plate, the head end of the flat rod A1 is inserted into the middle of the U-shaped metal plate to be fixed, a plurality of fixing screw holes 31 are formed in the surface of the U-shaped metal plate in a penetrating mode, bolts upwards penetrate through the fixing screw holes 31 from the bottom of the U-shaped metal plate to fix the U-shaped metal plate on a door frame, and a vertical fixing plate 42 can be arranged at the front end of the air cylinder 41 to facilitate fixing of the air cylinder 41 on the door frame.
To facilitate assembly of the accumulator 4, both ends of the cylinder 41 are provided with detachable screw seals 43.
Although the space in which the rack 51 moves does not need to be airtight, in order to prevent dust from entering, both ends of the pinion column member 6 are fixed to the cylinder 41 by bearings 61, and end caps 62 are provided on the outer sides of the bearings 61.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.
Claims (5)
1. The utility model provides an automatic door closer of atmospheric pressure damping formula which characterized in that: comprises a flat rod A, a flat rod B, an energy accumulator and a fixing piece; the tail ends of the flat rod A and the flat rod B are hinged with each other, the head end of the flat rod A is connected with the fixing piece, and the head end of the flat rod B is connected with the energy accumulator; the energy accumulator comprises an air cylinder and a double-head piston in the air cylinder, a rack is arranged in the middle of the double-head piston for connection, a gear column part which is in transmission with the rack is vertically arranged in the middle of the air cylinder, and the top end of the gear column part is fixed with the flat rod B; when the flat rod B is positioned at the position vertical to the energy accumulator, the double-head piston is close to one end of the cylinder.
2. The air pressure damping automatic door closer of claim 1, wherein: the mounting is U type metal sheet, and flat bar A's head end is inserted in the middle of the U type metal sheet and is fixed, runs through on the U type metal sheet surface and sets up a plurality of fixed screw.
3. The air pressure damping automatic door closer of claim 1, wherein: and a vertical fixing plate is arranged at the front end of the cylinder.
4. The air pressure damping automatic door closer of claim 1, wherein: and both ends of the cylinder are provided with detachable thread sealing elements.
5. The air pressure damping automatic door closer of any one of claims 1-4, wherein: the two ends of the gear column part are fixed with the cylinder through bearings, and end covers are arranged on the outer sides of the bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222862999.3U CN218541934U (en) | 2022-10-28 | 2022-10-28 | Air pressure damping type automatic door closer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222862999.3U CN218541934U (en) | 2022-10-28 | 2022-10-28 | Air pressure damping type automatic door closer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218541934U true CN218541934U (en) | 2023-02-28 |
Family
ID=85283318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222862999.3U Active CN218541934U (en) | 2022-10-28 | 2022-10-28 | Air pressure damping type automatic door closer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218541934U (en) |
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2022
- 2022-10-28 CN CN202222862999.3U patent/CN218541934U/en active Active
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