Subminiature pressure annunciator

Abstract

The utility model discloses a subminiature pressure annunciator, belongs to the technical field of pressure annunciators, and aims to solve the technical problems that a pressure annunciator in the prior art is large in overall weight and size and is difficult to meet the requirement for light weight. The sensor comprises a sensor housing, a main body housing and a socket. The sensor shell is connected with the main body shell to form an accommodating cavity; a micro switch and a trigger assembly are arranged in the accommodating cavity, and the micro switch is electrically connected with the socket; the trigger assembly comprises a diaphragm, a push rod and a spring piece. The sensor shell is provided with an input port, and an external medium acts on the diaphragm through the input port. According to the subminiature pressure annunciator, through combination of the diaphragm and the microswitch, through welding type connection assembly and reduction of screw connection, the overall lightweight design of the pressure annunciator is achieved, and the lightweight requirement of airborne equipment is met.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure signalers, and particularly relates to a super-small pressure signaler. Background Art

[0002] A pressure signaler is used to detect pressure changes and give early warnings about pipeline pressure, and is widely used in various airborne devices. The common forms of current pressure signalers are: converting pressure into displacement through a diaphragm or bellows, and the displacement drives a spring piece contact through a mechanism, and the contact closes or disconnects to generate corresponding signals.

[0003] The spring piece contact of the existing pressure signaler is a combined structure of double spring pieces. This structure needs to occupy a large space position, and most of the components of the pressure signaler are connected by screws, resulting in a large overall weight and volume of the pressure signaler, making it difficult to meet the increasingly stringent lightweight requirements of airborne devices.

[0004] The technologies of using bellows or diaphragm pressure signalers are mature and can achieve mass production. However, due to the large volume ratio of the spool combination or bellows, the overall weight and volume of the pressure signaler increase, making it difficult to meet the increasingly stringent lightweight requirements.

[0005] Therefore, there is an urgent need for a super-small pressure signaler that can meet the lightweight requirements of airborne devices. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a super-small pressure signaler to solve the technical problem that the overall weight and volume of the pressure signaler in the existing technology are large and it is difficult to meet the lightweight requirements.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] A super-small pressure signaler provided by the utility model includes a sensor housing, a main body housing, and a socket; the sensor housing is connected to the main body housing to form a receiving cavity; a microswitch and a triggering component are arranged in the receiving cavity, and the microswitch is electrically connected to the socket;

[0009] The triggering component includes a diaphragm, a push rod, and a spring piece; the sensor housing has an input port, and an external medium acts on the diaphragm through the input port.

[0010] The utility model is mainly composed of a diaphragm and a microswitch. The double spring piece combination structure is replaced by a microswitch, and the axial length of the pressure signaler is reduced on the premise of meeting the product performance requirements; when pressure acts on the diaphragm, the diaphragm deforms to displace the push rod, and the push rod controls the closing or opening of the microswitch to realize the closing or opening of the circuit.

[0011] Optionally or preferably, a compression ring is provided inside the sensor housing, and a stopper is threadedly connected inside the compression ring;

[0012] The diaphragm is disposed on the lower side of the stopper, one end of the push rod is connected to the diaphragm, and the other end penetrates through the stopper and acts on the spring piece.

[0013] Optionally or preferably, the compression ring is fixedly connected to the sensor housing; the main body housing and the sensor housing, and the socket and the main body housing are fixedly connected.

[0014] The pressure signaler of the present utility model is generally assembled by welding to ensure airtightness, and on the premise of ensuring the overall strength and stiffness, the use of screw connection is reduced. Therefore, it has the characteristics of small size, simple structure, and light weight.

[0015] Optionally or preferably, a switch seat is provided inside the main body housing, and the switch seat is used to fix the microswitch.

[0016] Optionally or preferably, the switch seat is threadedly connected to the inner wall of the main body housing.

[0017] In the present utility model, since the stopper and the compression ring, and the switch seat and the inner wall of the main body housing are both threadedly connected, the installation positions of the stopper and the switch seat can be adjusted to limit the deformation degree of the diaphragm and change the gap between the push rod and the spring piece, thereby realizing the adjustment of the parameters of the pressure signaler.

[0018] Based on the above technical solutions, the present utility model can at least produce the following technical effects:

[0019] (1) Small size: The ultra-small pressure signaler provided by the present utility model is mainly composed of a diaphragm and a microswitch. The double reed combination structure is replaced by a microswitch, and on the premise of meeting the product performance requirements, the axial length of the pressure signaler is reduced; when pressure acts on the diaphragm, the diaphragm deforms to displace the push rod, and the push rod controls the closing or opening of the microswitch to realize the closing or opening of the circuit;

[0020] (2) Light weight: It is generally assembled by welding to ensure airtightness, and on the premise of ensuring the overall strength and stiffness, the use of screw connection is reduced. Therefore, it has the characteristics of small size, simple structure, and light weight;

[0021] Compared with the double reed contact structure of the traditional pressure signaler and abandoning unnecessary screw connections, the product weight can be reduced by 50% and the volume can be reduced by 30%;

[0022] (3) Parameter adjustable: The parameters of the pressure signaler can be adjusted by adjusting the installation positions of the stopper and the switch seat. Brief Description of the Drawings

[0023] Figure 1 is a front sectional view of the ultra - small pressure signaler of the present utility model.

[0024] In the figure: 1, receptor housing; 2, diaphragm; 3, stopper; 4, spring piece; 5, micro - switch; 6, socket; 7, main body housing; 8, switch base; 9, pressure ring; 10, push rod. Detailed Description of the Preferred Embodiment

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model; obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present utility model.

[0026] Embodiment

[0027] Please refer to Figure 1 , an ultra - small pressure signaler, including a receptor housing 1, a main body housing 7 welded to the receptor housing 1, and a socket 6 welded to the main body housing 7.

[0028] In this embodiment, after the receptor housing 1 and the main body housing 7 are welded, a receiving cavity is formed, and the receiving cavity is used to arrange a micro - switch 5 and a trigger assembly.

[0029] In order to meet the requirements of light weight and reduce the volume, in this embodiment, the trigger assembly mainly adopts a diaphragm 2, a push rod 10 and a spring piece 4. The external medium acts on the diaphragm 2. After the diaphragm 2 deforms, it pushes the push rod 10 to move. The push rod 10 pushes the spring piece 4 to act on the micro - switch 5, so that the micro - switch 5 is closed. At this time, the circuit of the pressure signaler is connected, and an electrical signal is output to the outside through the socket 6. Compared with the traditional structure, the combination of the micro - switch 5 and the diaphragm 2 replaces the double - reed combination structure, thereby reducing the axial length of the pressure signaler.

[0030] Further, a pressure ring 9 is arranged inside the receptor housing 1, and a stopper 3 is threadedly connected inside the pressure ring 9. The above - mentioned diaphragm 2 is arranged on the lower side of the stopper 3. One end of the push rod 10 acts on the diaphragm 2, and the other end passes through the stopper 3 and acts on the spring piece 4, so that when the diaphragm 2 deforms under the action of the pressure medium, it can act on the spring piece 4 through the push rod 10, thereby triggering the micro - switch 5.

[0031] In this embodiment, a switch base 8 is also arranged inside the main body housing 7. In order to facilitate the adjustment of the setting position of the switch base 8, the switch base 8 is threadedly connected to the inner wall of the main body housing 7.

[0032] To facilitate the adjustment of the installation positions of the stopper 3 and the switch base 8, thereby restricting the degree of deformation of the diaphragm 2 and changing the gap between the push rod 10 and the spring piece 4, and further realizing the adjustment of the parameters of the pressure signaler; in this embodiment, the stopper 3 and the pressure ring 9, as well as the switch base 8 and the inner wall of the main body housing 7, are all connected by threads.

[0033] On the premise of ensuring the overall strength and stiffness, in order to reduce the use of screw connection methods, in this embodiment, welding connection methods are mostly used as a whole. For example, the pressure ring 9 and the sensor housing 1, the main body housing 7 and the sensor housing 1, and the socket 6 and the main body housing 7 are all connected by welding.

[0034] The specific working principle of the present utility model is as follows: The external medium contacts the diaphragm 2 through the input port on the sensor housing 1. The diaphragm deforms under the action of the medium pressure and moves the push rod 10. The push rod 10 acts on the spring piece 4 and triggers the micro switch 5. After the micro switch 5 is closed, the circuit of the pressure signaler is connected, and an electrical signal is output to the outside through the socket 6.

[0035] A super-small pressure signaler provided by the present utility model uses a combined structure of a diaphragm 2 and a micro switch 5 to reduce the axial length of the pressure signaler. Through welded connection assembly and reduction of screw connection, the circumferential dimension of the whole is reduced, realizing the lightweight design of the whole pressure signaler. Through this structural design, the double spring piece contact structure of the traditional pressure signaler is cancelled and unnecessary threaded connections are abandoned, greatly simplifying the product structure. The product weight can be reduced by 50% and the volume can be reduced by 30%.

[0036] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A super-small pressure signaler, characterized in that, It includes a sensor housing (1), a main body housing (7), and a socket (6); the sensor housing (1) is connected to the main body housing (7) to form a receiving cavity; a microswitch (5) and a triggering component are arranged in the receiving cavity, and the microswitch (5) is electrically connected to the socket (6). The triggering component includes a diaphragm (2), a push rod (10), and a spring piece (4); the sensor housing (1) has an input port, and an external medium acts on the diaphragm (2) through the input port.

2. The ultra-small pressure signaler according to claim 1, wherein A pressure ring (9) is arranged on the inner side of the sensor housing (1), and a stopper (3) is threadedly connected to the inner side of the pressure ring (9). The diaphragm (2) is arranged on the lower side of the stopper (3), one end of the push rod (10) is connected to the diaphragm (2), and the other end penetrates through the stopper (3) and acts on the spring piece (4).

3. The ultra-small pressure signaler according to claim 2, characterized in that, The pressure ring (9) is fixedly connected to the sensor housing (1); the main body housing (7) and the sensor housing (1) are fixedly connected, and the socket (6) and the main body housing (7) are fixedly connected.

4. The ultra-small pressure signaler according to claim 1, characterized in that, A switch seat (8) is arranged in the main body housing (7), and the switch seat (8) is used to fix the microswitch (5).

5. The ultra-small pressure signaler according to claim 4, characterized in that, The switch seat (8) is threadedly connected to the inner wall of the main body housing (7).

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