A membrane micro-pressure switch

Abstract

This utility model discloses a membrane micro-pressure switch, including a switch body. The switch body includes a cover plate and a housing. A rotating sleeve is rotatably connected to the outer wall of the housing via a rotating shaft. A pressure frame and an elastic component for maintaining the position of the pressure frame are integrated into the outer wall of the rotating sleeve. In this application, the insert at the bottom of the cover plate is integrated into the inside of the housing, and the cover plate is integrated into the top of the housing. Then, the pressure frame overlapping the outside of the limiting block is pulled, the sliding plate and the rotating sleeve slide into contact, the spring is stretched, and then the pressure frame is deflected. The rotating sleeve rotates into contact with the outer wall of the housing via the rotating shaft. Finally, the pressure frame is released at an appropriate position. Under the action of the spring, the pressure frame is engaged in the slot. The pressure frame can provide vertical constraint force for the cover plate, realizing the fixation of the cover plate and the housing. This method not only ensures the stability of the connection between the cover plate and the housing, but also ensures the convenience of subsequent independent disassembly and assembly of the cover plate, thereby improving the ease of use of the membrane micro-pressure switch.

Description

Technical Field

[0001] This utility model relates to the field of pressure switch technology, and in particular to a thin-film micro pressure switch. Background Technology

[0002] A membrane micro-pressure switch is a device designed to detect and respond to minute pressure changes. It primarily uses a sensitive membrane element to sense pressure changes. When a pressure difference occurs on both sides of the membrane, the membrane deforms, and this deformation is converted into a change in electrical signal, thereby triggering the switch to operate.

[0003] Chinese Patent Publication No. CN216487750U, published on May 10, 2022, discloses a square-shell pressure switch, a square-shell base assembly, a piston assembly, and a micro switch assembly. The square-shell base assembly includes a square-shell housing, a top cover, a top cover sealing ring, and a plug screw. The plug screw is connected to the piston outer sleeve via threads, and the end face of the plug screw contacts the O-ring seal. Tightening the plug screw compresses the O-ring seal to achieve a sealing effect. The piston assembly includes a piston outer sleeve, an O-ring seal, a metal pressure plate, a diaphragm, a spring, a piston rod, a lower spring positioning ring, an upper spring positioning ring, and a compression spring screw. The piston outer sleeve is connected to the square-shell housing via external threads, and the piston rod extends from the direction of the plug screw. The bottom of the piston contacts the diaphragm, and the other side of the diaphragm is fixed by the metal pressure plate.

[0004] Existing membrane micro-pressure switches typically consist of a cover plate, a housing, and a membrane opening / closing assembly. The cover plate and housing are fixed together with screws. However, in practice, the screw fixing method is greatly affected by external vibrations. Furthermore, when it is necessary to inspect or replace the membrane opening / closing assembly inside the housing, the disassembly and assembly of multiple sets of screws is inconvenient. Therefore, there is an urgent need to propose a corresponding membrane micro-pressure switch to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a thin-film micro-pressure switch in order to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A thin-film micro-pressure switch includes a switch body, the switch body includes a cover plate and a housing, the outer wall of the housing is rotatably connected to a rotating sleeve via a rotating shaft, the outer wall of the rotating sleeve integrates a pressure frame and an elastic component for maintaining the position of the pressure frame, and the outer wall of the pressure frame is engaged with the top of the cover plate via a slot.

[0008] Preferably, mounting strips are fixedly connected to both sides of the horizontal end of the housing, and a strip-shaped groove is opened in the middle of both sets of mounting strips.

[0009] Preferably, limiting blocks are fixedly connected to both sides of the horizontal end of the housing, and the limiting blocks have a wedge-shaped structure.

[0010] Preferably, the bottom of the cover plate is fixedly connected to a seat, the outer wall of the seat engages with the inner wall of the housing, the outer wall of the seat is fitted with a sealing ring, and the bottom of the sealing ring abuts against the top of the housing.

[0011] Preferably, the elastic component includes a slide plate fixedly connected to the bottom of the pressure frame, the slide plate being inserted into the top of the rotating sleeve, and a spring being fixedly connected between the bottom of the slide plate and the inner wall of the rotating sleeve.

[0012] Preferably, the pressure frame and the slide plate are integrally formed.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0014] 1. In this application, the base at the bottom of the cover plate is integrated into the inside of the housing, and the cover plate is integrated into the top of the housing. Then, the pressure frame overlapping the outside of the limiting block is pulled, the sliding plate and the rotating sleeve slide together, the spring is stretched, and then the pressure frame is deflected. The rotating sleeve rotates with the outer wall of the housing through the rotating shaft. Finally, the pressure frame is released at the appropriate position. The pressure frame is engaged in the slot under the action of the spring. The pressure frame can provide vertical constraint force for the cover plate, realizing the fixation of the cover plate and the housing. This method not only ensures the stability of the connection between the cover plate and the housing, but also ensures the convenience of subsequent independent disassembly and assembly of the cover plate, thereby improving the convenience of using the membrane micro-pressure switch.

[0015] 2. In this application, the mounting strip with a long slot replaces the traditional mounting plate with a hole. This allows for fine adjustment of the switch body position in the direction of the mounting strip extension, provided that the screw hole position on the external support is fixed, thereby improving the applicability of the membrane micro-pressure switch. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure according to an embodiment of the present utility model is shown;

[0017] Figure 2 A schematic diagram of a sealing ring structure according to an embodiment of the present invention is shown;

[0018] Figure 3 A schematic diagram of the pressure frame structure provided according to an embodiment of the present utility model is shown;

[0019] Figure 4 A schematic diagram of a spring structure according to an embodiment of the present invention is shown.

[0020] Legend:

[0021] 1. Switch body; 101. Cover plate; 102. Housing; 2. Mounting strip; 3. Limiting block; 4. Rotating sleeve; 5. Pressure frame; 6. Slot; 7. Sealing ring; 8. Embedded seat; 9. Slide plate; 10. Spring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 This utility model provides a technical solution:

[0024] A membrane micro-pressure switch includes a switch body 1, which includes a cover plate 101 and a housing 102. The outer wall of the housing 102 is rotatably connected to a rotating sleeve 4 via a rotating shaft. The outer wall of the rotating sleeve 4 integrates a pressure frame 5 and an elastic component for maintaining the position of the pressure frame 5. The outer wall of the pressure frame 5 is engaged with the top of the cover plate 101 via a slot 6.

[0025] The base 8 at the bottom of the cover plate 101 is attached to the inside of the housing 102, and the cover plate 101 is attached to the top of the housing 102. Then, the pressure frame 5 overlapping the outside of the limiting block 3 is pulled, the slide plate 9 and the rotating sleeve 4 slide into contact, the spring 10 is stretched, and then the pressure frame 5 is deflected. The rotating sleeve 4 rotates with the outer wall of the housing 102 through the rotating shaft. Finally, the pressure frame 5 is released at the appropriate position. The pressure frame 5 is engaged in the slot 6 under the action of the spring 10. The pressure frame 5 can provide vertical constraint force for the cover plate 101, thereby fixing the cover plate 101 and the housing 102. This method not only ensures the stability of the connection between the cover plate 101 and the housing 102, but also ensures the convenience of independent disassembly and assembly of the cover plate 101 in the future, thereby improving the convenience of using the membrane micro-pressure switch.

[0026] Specifically, such as Figure 2 and Figure 4 As shown, mounting strips 2 are fixedly connected to both sides of the horizontal end of the housing 102. The middle of the two sets of mounting strips 2 is provided with a strip-shaped groove. By using the mounting strips 2 in conjunction with the long strip-shaped through groove, the traditional mounting plate and through hole method is replaced. In this way, the position of the switch body 1 can be finely adjusted in the direction of extension of the mounting strips 2, provided that the position of the screw hole on the external bearing is fixed, thereby improving the applicability of the membrane micro-pressure switch.

[0027] Specifically, such as Figure 2 and Figure 3As shown, limit blocks 3 are fixedly connected to both sides of the horizontal end of the housing 102, and the limit blocks 3 are wedge-shaped to maintain the position of the pressure frame 5 when the cover plate 101 is separated from the housing 102. A seat 8 is fixedly connected to the bottom of the cover plate 101. The outer wall of the seat 8 engages with the inner wall of the housing 102. A sealing ring 7 is sleeved on the outer wall of the seat 8, and the bottom of the sealing ring 7 abuts against the top of the housing 102 to ensure the stability and airtightness of the connection between the cover plate 101 and the housing 102. The elastic component includes a sliding plate 9 fixedly connected to the bottom of the pressure frame 5. The sliding plate 9 is inserted into the top of the rotating sleeve 4, and a spring 10 is fixedly connected between the bottom of the sliding plate 9 and the inner wall of the rotating sleeve 4 to deflect the pressure frame 5. The rotating sleeve 4 rotates with the outer wall of the housing 102 through a rotating shaft. Finally, the pressure frame 5 is released at an appropriate position. The pressure frame 5 is engaged in the slot 6 under the action of the spring 10. The pressure frame 5 and the sliding plate 9 are integrally formed to ensure the connection strength between the two.

[0028] Working principle: The mounting base 8 at the bottom of the cover plate 101 is attached to the inside of the housing 102, and the cover plate 101 is attached to the top of the housing 102. Then, the pressure frame 5, which overlaps the outside of the limiting block 3, is pulled. The sliding plate 9 and the rotating sleeve 4 are slidably engaged, and the spring 10 is stretched. Then, the pressure frame 5 is deflected. The rotating sleeve 4 is rotated with the outer wall of the housing 102 through the rotating shaft. Finally, the pressure frame 5 is released at the appropriate position. Under the action of the spring 10, the pressure frame 5 is engaged in the slot 6. The pressure frame 5 can provide vertical constraint force for the cover plate 101, realizing the vertical constraint of the cover plate 101. The fixing of the cover plate 101 to the housing 102 ensures the stability of the connection between the cover plate 101 and the housing 102, and also ensures the convenience of independent disassembly and assembly of the cover plate 101 in the future, thereby improving the ease of use of the membrane micro-pressure switch. The mounting strip 2, in conjunction with the long strip-shaped through groove, replaces the traditional mounting plate with through hole method. This allows for fine adjustment of the position of the switch body 1 in the direction of extension of the mounting strip 2, provided that the screw hole position on the external bearing is fixed, thereby improving the applicability of the membrane micro-pressure switch.

[0029] The above description of the embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A thin-film micro-pressure switch, comprising a switch body (1), characterized in that, The switch body (1) includes a cover plate (101) and a housing (102). The outer wall of the housing (102) is rotatably connected to a rotating sleeve (4) via a rotating shaft. The outer wall of the rotating sleeve (4) integrates a pressure frame (5) and an elastic component for maintaining the position of the pressure frame (5). The outer wall of the pressure frame (5) is engaged with the top of the cover plate (101) via a slot (6).

2. A thin-film micro-pressure switch according to claim 1, characterized in that, The housing (102) has mounting strips (2) fixedly connected to both sides of the horizontal end, and the two sets of mounting strips (2) have strip-shaped grooves in the middle.

3. A thin-film micro-pressure switch according to claim 2, characterized in that, Limiting blocks (3) are fixedly connected to both sides of the horizontal end of the housing (102), and the limiting blocks (3) are wedge-shaped.

4. A thin-film micro-pressure switch according to claim 3, characterized in that, The bottom of the cover plate (101) is fixedly connected to a base (8), the outer wall of the base (8) engages with the inner wall of the shell (102), a sealing ring (7) is sleeved on the outer wall of the base (8), and the bottom of the sealing ring (7) abuts against the top of the shell (102).

5. A thin-film micro-pressure switch according to claim 4, characterized in that, The elastic component includes a slide plate (9) fixedly connected to the bottom of the pressure frame (5), the slide plate (9) being inserted into the top of the rotating sleeve (4), and a spring (10) being fixedly connected between the bottom of the slide plate (9) and the inner wall of the rotating sleeve (4).

6. A thin-film micro-pressure switch according to claim 5, characterized in that, The pressure frame (5) and the slide plate (9) are integrally formed.

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