Seat B surface pressure sensor

Abstract

The utility model discloses a seat B surface pressure sensor, which relates to the technical field of pressure sensors and comprises a sensor main body, a mounting groove is arranged in the middle of the front surface of the sensor main body, and a plurality of horizontally distributed contact assemblies are fixedly arranged in the mounting groove. A first circuit and a second circuit are laid at the upper end and the lower end in the mounting groove respectively, and a terminal protection block is arranged at one end in the mounting groove. According to the utility model, the aperture of the pressing holes of the two contact assemblies at the front end of the sensor main body is set to be larger, so that the film assembly can be pressed down more easily to form a passage, the sensitivity of the two contact assemblies at the front end is higher, the sensitivity of the front end of the sensor can be improved, and the sensor can be conveniently used by people with lighter weight; therefore, the situation that identification cannot be carried out is avoided, and the practicability is improved.

Description

Technical Field

[0001] This utility model relates to the field of pressure sensor technology, and in particular to a pressure sensor for the B-side of a seat. Background Technology

[0002] A seat pressure sensor is a thin-film contact sensor with contacts evenly distributed across the pressure-bearing surface of the seat. When the seat is subjected to external pressure, a trigger signal is generated. It is used in automotive seat occupant sensing systems, such as seatbelt alarm sensors and automatic taxi meters.

[0003] However, existing seat pressure sensors have a fixed contact sensitivity, which often fails to depress the contact when a lighter person sits on the seat, making them unusable. Furthermore, existing seat pressure sensors are generally directly glued to the seat and the connector is directly connected to the circuit, making them inconvenient to disassemble and install.

[0004] Therefore, it is necessary to invent a pressure sensor for the B-side of a seat to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a seat B-side pressure sensor to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a seat B-side pressure sensor, comprising a sensor body, wherein a mounting groove is provided in the center of the front of the sensor body, and a plurality of horizontally distributed contact components are fixedly installed inside the mounting groove, wherein a first circuit and a second circuit are respectively laid at the upper and lower ends of the mounting groove, and a terminal protection block is provided at one end of the mounting groove.

[0007] The contact assembly includes a thin film assembly, a sensitive layer is adhered to the lower surface of the thin film assembly, a support layer is adhered to the bottom end of the sensitive layer, a conductive layer is adhered to the lower surface of the support layer, and a pressing hole is formed through the middle of the support layer. The pressing hole diameter on the two contact assemblies near the terminal protection block is larger than the pressing hole diameter of the other contact assemblies.

[0008] Preferably, the thin film assembly includes a diaphragm, and a cushioning cotton is adhered to the lower surface of the diaphragm, and the lower surface of the cushioning cotton is coated with an adhesive backing.

[0009] Preferably, the positive and negative terminals of the contact assembly are electrically connected to the first circuit and the second circuit, respectively, and one end of the first circuit and one end of the second circuit are electrically connected.

[0010] Preferably, terminals are symmetrically fixed on one side of the terminal protection block, and the other ends of the first circuit and the second circuit are electrically connected to one of the terminals respectively.

[0011] Preferably, a sleeve is provided on the side of the sensor body near the terminal protection block, and a first wire and a second wire are movably disposed inside the sleeve, with one end of the first wire and the second wire respectively electrically connected to one of the terminals.

[0012] Preferably, a connector is provided on one side of the sleeve, and the other ends of the first and second wires are electrically connected to the connector. Multiple ear plates are integrally formed at the top and bottom of the sensor body, and mounting holes are provided through the ear plates.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] This invention improves the sensitivity of the sensor by making the pressing holes of the two contact components at the front end of the sensor body larger, which makes it easier to press down the diaphragm assembly and form a passage. This increases the sensitivity of the two contact components at the front end, making the sensor more suitable for lighter users and preventing recognition failures, thus improving its practicality. Furthermore, the connector and multiple ear plates with mounting holes allow the sensor to be installed on the B-side of the seat, and the wiring can be connected to external circuits through the connector, facilitating disassembly and installation, and making future maintenance and replacement convenient. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the structure of two contact components of this utility model.

[0017] Figure 3 This is a schematic diagram of the thin film assembly structure of this utility model.

[0018] Figure 4 This is a schematic diagram of the connection structure between the contact assembly and the circuit of this utility model.

[0019] In the diagram: 1. Sensor body; 2. Mounting slot; 3. First circuit; 4. Second circuit; 5. Contact assembly; 6. Terminal; 7. Terminal protection block; 8. Sleeve; 9. First wire; 10. Second wire; 11. Label; 12. Connector; 13. Ear plate; 14. Mounting hole; 501. Thin film assembly; 502. Sensitive layer; 503. Conductive layer; 504. Support layer; 505. Pressing hole; 5011. Diaphragm; 5012. Buffer cotton; 5013. Adhesive backing. Detailed Implementation

[0020] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] This utility model provides, for example Figure 1-4 The illustrated seat B-side pressure sensor includes a sensor body 1. A mounting groove 2 is formed in the center of the front of the sensor body 1. Multiple horizontally distributed contact assemblies 5 are fixedly installed inside the mounting groove 2. A first circuit 3 and a second circuit 4 are respectively laid at the upper and lower ends of the mounting groove 2. A terminal protection block 7 is provided at one end of the mounting groove 2 to protect the terminals 6 from damage. The contact assembly 5 includes a diaphragm assembly 501. A sensitive layer 502 is adhered to the lower surface of the diaphragm assembly 501. A support layer 504 is adhered to the bottom end of the sensitive layer 502. The lower surface of the support layer 504 is adhered to... A conductive layer 503 is adhered to the sensor body 1, and a pressing hole 505 is formed through the middle of the support layer 504. The pressing hole 505 on the two contact components 5 near the terminal protection block 7 has a larger diameter than the pressing hole 505 on the other contact components 5. By setting the pressing hole 505 of the two contact components 5 at the front end of the sensor body 1 to a larger diameter, the thin film assembly 501 can be pressed down more easily to form a passage, thereby increasing the sensitivity of the two contact components 5 at the front end. This improves the sensitivity of the sensor front end, making it more suitable for use by lighter people and preventing the inability to recognize the sensor, thus improving its practicality.

[0022] Furthermore, the thin film assembly 501 includes a diaphragm 5011, a cushioning cotton 5012 is adhered to the lower surface of the diaphragm 5011, and an adhesive backing 5013 is coated on the lower surface of the cushioning cotton 5012. The positive and negative terminals of the contact assembly 5 are electrically connected to the first circuit 3 and the second circuit 4, respectively. One end of the first circuit 3 and one end of the second circuit 4 are electrically connected. Terminals 6 are symmetrically fixed on one side of the terminal protection block 7, and the other ends of the first circuit 3 and the second circuit 4 are electrically connected to one of the terminals 6, respectively. A sleeve 8 is provided on the side of the sensor body 1 near the terminal protection block 7, and a first wire 9 and a second wire 10 are movably inserted through the sleeve 8. One end of the first wire 9 and the second wire 10 are... Each of the two wires is electrically connected to one of the terminals 6. A connector 12 is provided on one side of the sleeve 8, and the other ends of the first wire 9 and the second wire 10 are electrically connected to the connector 12. The connector 12 facilitates the connection of the sensor to other circuits, which can be directly plugged in. The top and bottom of the sensor body 1 are integrally formed with multiple ear plates 13, and mounting holes 14 are provided through the ear plates 13. Through the connector 12 and the multiple ear plates 13 and the mounting holes 14, the sensor can be installed on the B side of the seat, and the circuit can be plugged into the external circuit through 12a, which can be easily disassembled and installed, and is convenient for later maintenance and replacement. At the same time, the sensor installed on the B side of the seat is less affected by high temperature and humidity, and is more durable.

[0023] Working principle of this utility model:

[0024] In use, the entire sensor is installed at the bottom of the seat, with the end near the terminal protection block 7 positioned close to the steering wheel. During use, because the pressing holes 505 of the two contact components 5 at the front end of the sensor body 1 are relatively large, the diaphragm assembly 501 can be more easily pressed down, forming a passage. This results in higher sensitivity of the two front contact components 5, thus improving the sensitivity of the sensor front end and making it more suitable for lighter users, preventing situations where recognition fails. Figure 4 As shown, connecting any one of the contact components 5 will connect the circuit and make the sensor work.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pressure sensor for the B-side of a seat, characterized in that: The sensor body (1) includes a mounting groove (2) in the center of the front side of the sensor body (1). Multiple horizontally distributed contact components (5) are fixedly installed inside the mounting groove (2). The upper and lower ends of the mounting groove (2) are respectively laid with a first circuit (3) and a second circuit (4). A terminal protection block (7) is provided at one end of the mounting groove (2). The contact assembly (5) includes a thin film assembly (501), a sensitive layer (502) is adhered to the lower surface of the thin film assembly (501), a support layer (504) is adhered to the bottom end of the sensitive layer (502), a conductive layer (503) is adhered to the lower surface of the support layer (504), a pressing hole (505) is provided through the middle of the support layer (504), and the pressing hole (505) on the two contact assemblies (5) near the terminal protection block (7) has a larger hole diameter than the pressing hole (505) of the other contact assemblies (5).

2. The seat B-side pressure sensor according to claim 1, characterized in that: The thin film assembly (501) includes a diaphragm (5011), on the lower surface of the diaphragm (5011) is a cushioning cotton (5012), and the lower surface of the cushioning cotton (5012) is coated with an adhesive backing (5013).

3. A seat B-side pressure sensor according to claim 2, characterized in that: The positive and negative terminals of the contact assembly (5) are electrically connected to the first circuit (3) and the second circuit (4) respectively, and one end of the first circuit (3) and one end of the second circuit (4) are electrically connected.

4. A seat B-side pressure sensor according to claim 3, characterized in that: Terminals (6) are symmetrically fixed on one side of the terminal protection block (7), and the other ends of the first circuit (3) and the second circuit (4) are electrically connected to one of the terminals (6).

5. A seat B-side pressure sensor according to claim 4, characterized in that: The sensor body (1) is provided with a sleeve (8) on the side near the terminal protection block (7), and a first wire (9) and a second wire (10) are provided inside the sleeve (8). One end of the first wire (9) and the second wire (10) are electrically connected to one of the terminals (6).

6. A seat B-side pressure sensor according to claim 5, characterized in that: A connector (12) is provided on one side of the sleeve (8), and the other ends of the first wire (9) and the second wire (10) are electrically connected to the connector (12). The top and bottom of the sensor body (1) are integrally formed with multiple ear plates (13), and mounting holes (14) are provided through the ear plates (13).

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