A waterproof temperature and pressure integrated sensor

Abstract

The utility model discloses a waterproof temperature and pressure integrated sensor, including connector, flexible circuit board subassembly, pressure sensing element, temperature sensing element, base support subassembly and installation metal shell, the one end of connector is installed and is inserted into the connector another end with base support subassembly installation and connect flexible circuit board subassembly, and flexible circuit board subassembly and pressure sensing element are installed in base support subassembly, and flexible circuit board subassembly and pressure sensing element, temperature sensing element electric connection, temperature sensing element is located the bottom of base support subassembly, and temperature sensing element outside is covered and has covered metal shell, and installation metal shell is connected with base support subassembly, this sensor adopts the structure of covering, guarantees the resistance of temperature sensing element to various medium, can eliminate the temperature influence of sensor to temperature sensing element after installing the installation cylinder simultaneously, has improved the precision of medium temperature detection.

Description

Technical Field

[0001] This utility model relates to the field of sensor technology, and more specifically to a waterproof temperature and pressure integrated sensor. Background Technology

[0002] Many control systems require information about the temperature and pressure of the surrounding fluid medium (gas or liquid). For example, in automotive systems, it is desirable to know the pressure and temperature of the fluid medium in order to more effectively control the efficient operation of the system.

[0003] In the new automotive system, the testing medium contains excessive moisture (vapor), which makes the temperature sensing element that detects temperature face more severe conditions.

[0004] For example, the integrated temperature and pressure sensor disclosed in patent CN108414030A includes an electrical connector, a pressure sensor element, and a base assembly connected in sequence. A flexible conditioning circuit board is disposed between the pressure sensor element and the electrical connector, and the pressure sensor element is electrically connected to the flexible conditioning circuit board. A conductive extension is connected to the flexible conditioning circuit board, and a temperature sensor element is disposed at the bottom end of the conductive extension. The assembly efficiency of the flexible circuit board extension and the base of this sensor is low. Furthermore, the housing component and the probe of the temperature sensing element are an integral structure, which increases the impact of the housing component on the temperature detection accuracy of the temperature sensing element, resulting in a decrease in the accuracy of the temperature sensing element.

[0005] For example, the pressure and temperature sensor disclosed in patent CN217877784U may include a pressure port configured to receive a medium, wherein the pressure port includes at least one thermistor. The sensor may further include a body having a socket and a sensing element configured to seal and isolate the body from the medium in the pressure port. The socket and sensing element may define a space in which the medium can enter, and the socket may further include a medium receiver configured to allow the medium to pass between the pressure port and the space. This sensor has many components, a complex assembly process, and the temperature sensing element is directly exposed to a water-containing medium, increasing the risk of failure. Utility Model Content

[0006] To address the shortcomings of existing technologies, this invention provides a waterproof temperature and pressure integrated sensor. The sensor adopts an encapsulated structure to ensure the temperature sensing element's tolerance to various media, especially conductive media (such as water). At the same time, through the separate design of the mounting metal shell, base connection terminals, and base bracket, the temperature influence of the mounting cylinder on the temperature sensing element after sensor installation is eliminated, thereby improving the accuracy of medium temperature detection.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A waterproof temperature and pressure integrated sensor includes a connector, a flexible circuit board assembly, a pressure sensing element, a temperature sensing element, a base bracket assembly, and a mounting metal housing. One end of the connector is equipped with a plug, and the other end of the connector is installed and connected to the flexible circuit board assembly in the base bracket assembly. The flexible circuit board assembly and the pressure sensing element are installed inside the base bracket assembly, and the flexible circuit board assembly is electrically connected to the pressure sensing element and the temperature sensing element. The temperature sensing element is located at the bottom of the base bracket assembly, and the outside of the temperature sensing element is covered by a metal housing. The mounting metal housing is connected to the base bracket assembly.

[0008] Furthermore, the base support assembly includes a base connection terminal and a base support. The connector is mounted on the base connection terminal. The flexible circuit board assembly and the pressure sensing element are mounted inside the base connection terminal, and the pressure sensing element is connected to the base support. The base support is located at the bottom of the base connection terminal, and the temperature sensing element is located inside the base support. The base support with a metal casing is installed and connected.

[0009] Furthermore, the base support is provided with a chamber, and the temperature sensing element is located inside the chamber.

[0010] Furthermore, a first elastic seal is provided between the pressure sensing element and the base support.

[0011] Furthermore, the metal casing is connected to the base bracket by riveting, and a second elastic seal is provided at the connection between the metal casing and the base bracket.

[0012] Furthermore, the mounting metal housing is mounted on the base connection terminal, and a third elastic sealing body is directly provided between the mounting metal housing and the base connection terminal.

[0013] Furthermore, the bottom of the mounting metal housing is provided with a connecting thread, and a fourth elastic seal is provided at the connection between the connecting thread and the mounting metal housing.

[0014] Compared with the prior art, the beneficial effects of this utility model are: In this invention, the temperature sensing element adopts an encapsulated structure to ensure its tolerance to various media, especially conductive media (such as water). At the same time, the separate design of the metal shell, base connection terminal and base bracket eliminates the influence of the mounting cylinder on the temperature sensing element after the sensor is installed, thus improving the accuracy of medium temperature detection. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein: Figure 1 An explosion diagram of a waterproof temperature and pressure sensor. Figure 2 This is an exploded schematic diagram of the base support assembly, temperature sensing element, and metal casing.

[0016] The components in the diagram are labeled as follows: 1. Connector; 2. Flexible circuit board assembly; 201. Chip element; 202. Flexible circuit board; 3. Pressure sensor; 4. First elastic seal; 5. Base support assembly; 501. Base connection terminal; 502. Base support; 6. Second elastic seal; 7. Temperature sensing element; 8. Covered metal shell; 9. Thermally conductive adhesive; 10. Third elastic seal; 11. Mounting metal shell; 12. Fourth elastic seal. Detailed Implementation

[0017] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0019] A waterproof temperature and pressure sensor that integrates both, such as Figure 1-2As shown, the assembly includes a connector 1, a flexible circuit board assembly 2, a pressure sensing element 3, a temperature sensing element 7, a base bracket assembly 5, and a mounting metal housing 11. One end of the connector 1 is equipped with a connector plug, and the other end of the connector 1 is installed and connected to the flexible circuit board assembly 2 in the base bracket assembly 5. The flexible circuit board assembly 2 and the pressure sensing element 3 are installed inside the base bracket assembly 5, and the flexible circuit board assembly 2 is electrically connected to the pressure sensing element 3 and the temperature sensing element 7. The temperature sensing element 7 is located at the bottom of the base bracket assembly 5, and the outside of the temperature sensing element 7 is covered by a covering metal housing 8. The mounting metal housing 11 is connected to the base bracket assembly 5.

[0020] Preferably, the base support assembly 5 includes a base connection terminal 501 and a base support 502. The connector 1 is mounted on the base connection terminal 501. The flexible circuit board assembly 2 and the pressure sensing element 3 are mounted inside the base connection terminal 501, and the pressure sensing element 3 is connected to the base support 502. The base support 502 is located at the bottom of the base connection terminal 501, and the temperature sensing element 7 is located inside the base support 502. The metal casing 8 is mounted and connected to the base support 502.

[0021] Preferably, the base bracket 502 is provided with a chamber, and the temperature sensing element 7 is located in the chamber, so that the temperature sensing element 7 is installed, fixed and limited by the chamber.

[0022] Preferably, the flexible circuit board assembly 2 includes a chip element 201 and a flexible circuit board 202.

[0023] Preferably, the connection between the connector 1 and the base connection terminal 501 is a snap-fit ​​connection.

[0024] Preferably, a first elastic sealing body 4 is provided between the pressure sensing element 3 and the base bracket 502.

[0025] Preferably, the metal casing 8 is connected to the base bracket 502 by riveting, and a second elastic sealing body 6 is provided at the connection between the metal casing 8 and the base bracket 502.

[0026] Preferably, the mounting metal housing 11 is mounted on the base connection terminal 501, and a third elastic sealing body 10 is provided between the mounting metal housing 11 and the base connection terminal 501.

[0027] Preferably, the bottom of the mounting metal housing 11 is provided with a connecting thread, and a fourth elastic sealing body 12 is provided at the connection between the connecting thread and the mounting metal housing 11.

[0028] Preferably, thermally conductive adhesive 9 is used to fill the space between the temperature sensing element 7 and the metal casing 8.

[0029] advantage: In this invention, the temperature sensing element 7 adopts an encapsulated structure to ensure its tolerance to various media, especially conductive media (such as water). At the same time, the separate design of the metal shell 11, the base connection terminal 501, and the base bracket 502 eliminates the influence of the mounting cylinder on the temperature sensing element 7 after the sensor is installed, thereby improving the accuracy of medium temperature detection.

[0030] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A waterproof temperature and pressure sensor integrating multiple sensors, characterized in that: The device includes a connector, a flexible circuit board assembly, a pressure sensing element, a temperature sensing element, a base bracket assembly, and a mounting metal housing. One end of the connector is fitted with a plug, and the other end of the connector is mounted to and connected to the flexible circuit board assembly within the base bracket assembly. The flexible circuit board assembly and the pressure sensing element are mounted inside the base bracket assembly, and the flexible circuit board assembly is electrically connected to the pressure sensing element and the temperature sensing element. The temperature sensing element is located at the bottom of the base bracket assembly and is covered by a metal housing. The mounting metal housing is connected to the base bracket assembly.

2. The waterproof temperature and pressure integrated sensor according to claim 1, characterized in that: The base support assembly includes a base connection terminal and a base support. The connector is mounted on the base connection terminal. The flexible circuit board assembly and the pressure sensing element are mounted inside the base connection terminal, and the pressure sensing element is connected to the base support. The base support is located at the bottom of the base connection terminal, and the temperature sensing element is located inside the base support. The base support with a metal shell is installed and connected.

3. The waterproof temperature and pressure integrated sensor according to claim 2, characterized in that: The base support is provided with a chamber, and the temperature sensing element is located in the chamber.

4. The waterproof temperature and pressure integrated sensor according to claim 3, characterized in that: A first elastic seal is provided between the pressure sensing element and the base support.

5. A waterproof temperature and pressure integrated sensor according to claim 4, characterized in that: The metal casing is connected to the base bracket by riveting, and a second elastic seal is provided at the connection between the metal casing and the base bracket.

6. A waterproof temperature and pressure integrated sensor according to claim 5, characterized in that: The mounting metal housing is mounted on the base connection terminal, and a third elastic sealing body is directly provided between the mounting metal housing and the base connection terminal.

7. The waterproof temperature and pressure integrated sensor according to claim 1, characterized in that: The bottom of the mounting metal housing is provided with a connecting thread, and a fourth elastic sealing body is provided at the connection between the connecting thread and the mounting metal housing.

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