CN220556046U - Air cavity sealing device and pneumatic film executing mechanism - Google Patents
Air cavity sealing device and pneumatic film executing mechanism Download PDFInfo
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- CN220556046U CN220556046U CN202322163768.8U CN202322163768U CN220556046U CN 220556046 U CN220556046 U CN 220556046U CN 202322163768 U CN202322163768 U CN 202322163768U CN 220556046 U CN220556046 U CN 220556046U
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- air cavity
- sealing
- membrane cover
- cover
- fastener
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- 238000007789 sealing Methods 0.000 title claims abstract description 84
- 230000007246 mechanism Effects 0.000 title abstract description 9
- 239000012528 membrane Substances 0.000 claims abstract description 48
- 239000000463 material Substances 0.000 claims description 9
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 8
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 8
- 239000007769 metal material Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 9
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 239000000565 sealant Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000035882 stress Effects 0.000 description 3
- -1 Polytetrafluoroethylene Polymers 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The application discloses an air cavity sealing device and a pneumatic film executing mechanism, and relates to the technical field of executing mechanisms, wherein the air cavity sealing device comprises a film cover, a support frame, a fastener, a sealing gasket and a buffer piece, and an air cavity is formed in the film cover; the film cover is arranged on the supporting frame; the fastener sequentially penetrates through one side, close to the support frame, of the membrane cover and the support frame; the sealing gasket is arranged between the fastening piece and the film cover; the cushioning piece is arranged between the side wall of the fastener and the side wall of the sealing gasket and is positioned between the fastener and the supporting frame, and the vertical height of the cushioning piece is higher than that of the sealing gasket. The sealing effect of the air cavity can be improved, and meanwhile, the stability of connection between the membrane cover and the support frame is improved.
Description
Technical Field
The application relates to the technical field of actuating mechanisms, in particular to an air cavity sealing device and a pneumatic film actuating mechanism.
Background
In the related art, the fastening mode between the membrane cover and the supporting frame in the pneumatic actuating mechanism is usually a mode of combining a bolt and a rubber combined gasket or a mode of combining the bolt and a plane sealant. In the fastening mode of the bolt and the rubber combined gasket, the bolt is easy to crush the combined gasket, so that the sealing effect of an air cavity formed by the film cover is poor; the fastening mode that bolt and plane sealant combined together can realize the sealing of air cavity, but the stability of being connected between membrane lid and the support frame is relatively poor, has the potential safety hazard.
Disclosure of Invention
The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, the application provides the air cavity sealing device and the pneumatic film executing mechanism, which can improve the sealing effect of the air cavity and improve the stability of connection between the film cover and the supporting frame.
In a first aspect, the present application provides an air cavity sealing device comprising:
the membrane cover is internally provided with an air cavity;
the film cover is arranged on the support frame;
the fastening piece sequentially penetrates through one side, close to the supporting frame, of the film cover and the supporting frame;
the sealing gasket is arranged between the fastening piece and the film cover;
the buffer piece is arranged between the side wall of the fastener and the side wall of the sealing gasket and between the fastener and the supporting frame, and the vertical height of the buffer piece is higher than that of the sealing gasket.
The air cavity sealing device according to the embodiment of the first aspect of the application has at least the following beneficial effects: an air cavity is formed in the membrane cover, and the membrane cover is arranged on the support frame; the fastener sequentially penetrates through one side, close to the support frame, of the membrane cover and the support frame; the sealing gasket is arranged between the fastening piece and the film cover; the cushioning piece is arranged between the side wall of the fastener and the side wall of the sealing gasket and is positioned between the fastener and the supporting frame, and the vertical height of the cushioning piece is higher than that of the sealing gasket. This application is through fastener, sealing washer and bolster's combined means, after fastening the fastener, the atress component changes sealing washer into, avoids damaging the bolster because the fastening moment of fastener is too big, and the vertical height of bolster is higher than sealing washer to leave the compression volume to the bolster, and then improve the gas tightness of air cavity.
According to some embodiments of the application, the sealing gaskets are arranged in two, the two sealing gaskets are symmetrically arranged on two sides of the fastening piece, and the number of the buffer pieces corresponds to the number of the sealing gaskets.
According to some embodiments of the application, the fastening pieces are provided with two fastening pieces, and the fastening pieces are respectively arranged at two ends of the same side of the film cover, and the number of the sealing gaskets and the number of the buffering pieces correspond to the number of the fastening pieces.
According to some embodiments of the application, the sealing gasket is a gasket of metallic material.
According to some embodiments of the application, the fastener is a bolt.
According to some embodiments of the application, the bolts are flange face bolts.
According to some embodiments of the present application, the material of which the cushioning member is made is a PTFE material.
According to some embodiments of the application, the membrane cover comprises an upper membrane cover and a lower membrane cover, which are connected to form the air cavity.
In a second aspect, the present application provides a pneumatic membrane actuator comprising an air cavity sealing device according to an embodiment of the first aspect of the present utility model.
Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.
Drawings
Additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic view of a part of the structure of an air cavity sealing device provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a pneumatic film actuator according to an embodiment of the present application.
Reference numerals:
a pneumatic film actuator 100;
an upper membrane cover 110, a lower membrane cover 111, an air cavity 112, and a membrane cover fastening surface 113;
a fastener 120, a gasket seal 121, a buffer 122;
a support 130.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
In the description of the present application, it should be understood that references to orientation descriptions, such as directions of up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
In the description of the present application, the description of the first and second is only for the purpose of distinguishing technical features, and should not be construed as indicating or implying relative importance or implying the number of technical features indicated or the precedence of the technical features indicated.
In the description of the present application, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present application can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical solution.
In the related art, the fastening mode between the membrane cover and the supporting frame in the pneumatic actuating mechanism is usually a mode of combining a bolt and a rubber combined gasket or a mode of combining the bolt and a plane sealant. In the fastening mode of the bolt and the rubber combined gasket, the bolt is easy to crush the combined gasket, so that the sealing effect of an air cavity formed by the film cover is poor; the fastening mode that bolt and plane sealant combined together can realize the sealing of air cavity, but the stability of being connected between membrane lid and the support frame is relatively poor, has the potential safety hazard.
In order to solve the above-mentioned problems, the present application proposes an air cavity sealing device and a pneumatic film actuator 100, and embodiments of the present application are further described below with reference to the accompanying drawings.
1-2, the present application provides an air cavity sealing device, including a membrane cover, a support 130, a fastener 120, a sealing gasket 121 and a buffer 122, wherein an air cavity 112 is formed inside the membrane cover; the film cover is arranged on the supporting frame 130; the fastening pieces 120 sequentially penetrate through one side of the membrane cover, which is close to the supporting frame 130, and the supporting frame 130; the sealing gasket 121 is arranged between the fastening piece 120 and the film cover; the buffer 122 is disposed between the side wall of the fastener 120 and the side wall of the sealing gasket 121, and between the fastener 120 and the supporting frame 130, and the vertical height of the buffer 122 is higher than that of the sealing gasket 121.
It should be noted that, through holes corresponding to the fastening pieces 120 are respectively formed on a side of the membrane cover close to the bracket and a side of the support frame 130 close to the membrane cover fastening surface 113, and the fastening pieces 120 sequentially penetrate through the membrane cover and the support frame 130 through the through holes so as to fix the membrane cover on the support frame 130.
It should be noted that, referring to fig. 1, the width of the upper portion of the fastening piece 120 is wider than the portion penetrating the through hole, a transverse gap is left between the upper portion of the fastening piece 120 and the bottom of the film cover, that is, the film cover fastening surface 113, the sealing gasket 121 is disposed in the gap between the fastening piece 120 and the film cover fastening surface 113, meanwhile, a gap for accommodating the buffer piece 122 is left between the side wall of the sealing gasket 121, which is close to the fastening piece 120, and the fastening piece 120, the buffer piece 122 is disposed in the gap between the side wall of the sealing gasket 121, which is close to the fastening piece 120, and the height of the buffer piece 122 is higher than the sealing gasket 121, so that the compression amount of the buffer piece 122 is left, and the air tightness of the air cavity 112 is further improved.
According to the combined type sealing gasket, the fastening piece 120, the sealing gasket 121 and the buffer piece 122 are combined, after the fastening piece 120 is fastened, the stress element is converted into the sealing gasket 121, the buffer piece 122 is prevented from being damaged due to overlarge fastening moment of the fastening piece 120, the vertical height of the buffer piece 122 is higher than that of the sealing gasket 121, the compression amount of the buffer piece 122 is reserved, and the air tightness of the air cavity 112 is improved.
Referring to fig. 1, it can be understood that the sealing gaskets 121 are provided in two, the two sealing gaskets 121 are symmetrically disposed at both sides of the fastening member 120, and the number of the buffering members 122 corresponds to the number of the sealing gaskets 121.
It should be noted that, a transverse gap is left between the upper portions of the two sides of the fastening member 120 and the bottom of the film cover, and the sealing gaskets 121 and the buffer members 122 are symmetrically disposed on the two sides of the fastening member 120, so as to form a symmetrical balance, and further improve the sealing effect on the air cavity 112.
Referring to fig. 2, it can be understood that the number of the sealing gaskets 121 and the buffer members 122 corresponds to the number of the fasteners 120, and the fasteners 120 are provided at two ends of the same side of the film cover.
Illustratively, referring to fig. 2, two fasteners 120 are provided at both ends of the bottom of the membrane cover, each fastener 120 being provided with two sealing gaskets 121 and two cushioning members 122, respectively. To form a symmetrical balance and further improve the stability of the connection between the membrane cover and the support 130 and the sealing effect on the air cavity 112. By this arrangement, a symmetrical balance is formed, improving the stability of the connection between the membrane cover and the support 130.
It will be appreciated that the sealing gasket 121 is a gasket of metallic material.
After the fastening member 120 is fastened, the sealing gasket 121 made of a metal material is used as a stress element, so that the buffer member 122 is not damaged due to an excessive fastening torque of the fastening member 120.
It is understood that the fastener 120 is a bolt.
It should be noted that, when the film cover is connected with the support frame 130 by using the bolts, different fastening forces can be adopted according to the requirements, so as to achieve different fastening effects and have better fixity; the mode of bolt connection is difficult to loose or fall off under the condition of vibration, and has good vibration resistance.
Referring to fig. 1 to 2, it can be appreciated that the bolts are flange face bolts.
Compared with independent bolts, the flange face bolts can have the same fastening effect as a cross design when being screwed, so that the structural system is firmer and can bear high temperature and negative pressure better; secondly, the flange face bolt has tensile and compressive resistance, is a firm and durable bolt, can firmly fix loose parts together and is not easy to damage; and moreover, the flange face bolt has good corrosion resistance, can be still firm in use in a plurality of humid environments, and can save energy, be safe and be environment-friendly.
It is understood that the material of which the buffer 122 is made is a PTFE material.
The PTFE is called Polytetrafluoroethylene, which is translated into Polytetrafluoroethylene, and the buffer 122 is made of PTFE material, which has excellent high temperature resistance, corrosion resistance, and aging resistance.
Referring to fig. 2, it can be understood that the membrane cover includes an upper membrane cover 110 and a lower membrane cover 111, and the upper membrane cover 110 and the lower membrane cover 111 are connected to form an air chamber 112.
It should be noted that, the upper membrane cover 110 and the lower membrane cover 111 are stamping parts, after the upper membrane cover 110 and the lower membrane cover 111 are connected, the connection between the lower membrane cover 111 and the support frame 130 is performed by a combination mode of flange face bolts, a buffer member 122 made of PTFE and a sealing gasket 121 made of metal materials, so that the problems that the sealing of the air cavity 112 is unreliable and the fastening between the lower membrane cover 111 and the support frame 130 is unreliable can be effectively solved, the sealing effect of the air cavity 112 is improved, and meanwhile, the stability of the connection between the lower membrane cover 111 and the support frame 130 is also improved.
In a second aspect, and with reference to fig. 2, there is provided a pneumatic membrane actuator 100, the pneumatic membrane actuator 100 comprising an air cavity sealing device as in any of the embodiments of the first aspect.
Because the pneumatic film actuator 100 in this embodiment has the air cavity sealing device in any of the embodiments described above, the pneumatic film actuator 100 in this embodiment may utilize the combination of the fastener 120, the sealing gasket 121 and the buffer member 122 in the air cavity sealing device in the embodiment described above, after the fastener 120 is fastened, the stress element is converted into the sealing gasket 121, so that the buffer member 122 is prevented from being damaged due to an excessive fastening torque of the fastener 120, and the vertical height of the buffer member 122 is higher than that of the sealing gasket 121, so as to leave a compression amount for the buffer member 122, thereby improving the air tightness of the air cavity 112.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While the foregoing is directed to the preferred embodiments of the present application, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the present application, such changes and modifications are also intended to be within the scope of the present application.
While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. An air cavity sealing device, comprising:
the membrane cover is internally provided with an air cavity;
the film cover is arranged on the support frame;
the fastening piece sequentially penetrates through one side, close to the supporting frame, of the film cover and the supporting frame;
the sealing gasket is arranged between the fastening piece and the film cover;
the buffer piece is arranged between the side wall of the fastener and the side wall of the sealing gasket and between the fastener and the supporting frame, and the vertical height of the buffer piece is higher than that of the sealing gasket.
2. The air cavity sealing device according to claim 1, wherein two sealing gaskets are provided, the two sealing gaskets are symmetrically arranged at two sides of the fastening piece, and the number of the buffer pieces corresponds to the number of the sealing gaskets.
3. An air cavity sealing device according to any one of claims 1 or 2, wherein two fasteners are provided and are respectively arranged at two ends of the same side of the membrane cover, and the number of the sealing gaskets and the number of the buffer parts correspond to the number of the fasteners.
4. The air cavity sealing arrangement of claim 1, wherein the sealing gasket is a gasket of metallic material.
5. The air cavity sealing device of claim 1, wherein the fastener is a bolt.
6. The air cavity sealing arrangement of claim 5, wherein the bolts are flange face bolts.
7. The air cavity sealing device of claim 1, wherein the material of which the cushioning member is made is a PTFE material.
8. The air cavity sealing device of claim 1, wherein the membrane cover comprises an upper membrane cover and a lower membrane cover, the upper membrane cover and the lower membrane cover being connected to form the air cavity.
9. A pneumatic diaphragm actuator comprising an air cavity sealing arrangement according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322163768.8U CN220556046U (en) | 2023-08-11 | 2023-08-11 | Air cavity sealing device and pneumatic film executing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322163768.8U CN220556046U (en) | 2023-08-11 | 2023-08-11 | Air cavity sealing device and pneumatic film executing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220556046U true CN220556046U (en) | 2024-03-05 |
Family
ID=90050104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322163768.8U Active CN220556046U (en) | 2023-08-11 | 2023-08-11 | Air cavity sealing device and pneumatic film executing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220556046U (en) |
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2023
- 2023-08-11 CN CN202322163768.8U patent/CN220556046U/en active Active
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