Self-locking pressure sensor

Abstract

The embodiment of the utility model provides a self-locking pressure sensor, and relates to the technical field of pressure sensor technology. Comprising a body; the self-locking structure is arranged at one end of the body, and the self-locking structure and the body are integrally arranged; the body is connected with an external structure through the self-locking structure. According to the utility model, the problem of abnormal conduction caused by poor sealing performance of the sensor is solved, and the effect of improving the sealing performance of the sensor is further achieved.

Description

Technical Field

[0001] The embodiment of the utility model relates to the field of pressure sensors, and in particular to a self-locking pressure sensor. Background Art

[0002] Pressure sensors are mainly used in the braking system of new energy vehicles. Their main function is to detect the real-time pressure value of the environment or system, convert the pressure value into a corresponding voltage value through a preset pressure curve, and feed it back to the vehicle control unit.

[0003] In the existing automotive industry, pressure sensors are mainly connected to vacuum gas tanks through sealing rings. The sealing rings are mostly made of rubber, have a short lifespan, poor high temperature resistance, and are prone to poor sealing, resulting in abnormal pressure feedback.

[0004] There is no better solution to the above problems. Utility Model Content

[0005] The embodiment of the utility model provides a self-locking pressure sensor to at least solve the problem of being unable to effectively seal in the related art.

[0006] According to one embodiment of the utility model, a self-locking pressure sensor is provided, comprising:

[0007] ontology;

[0008] A self-locking structure is arranged at one end of the body and is integrated with the body;

[0009] The body is connected to the external structure through the self-locking structure.

[0010] In an exemplary embodiment, the self-locking structure includes a self-locking connector and an oblique thread arranged on the self-locking connector. When the self-locking connector is connected to an external structure, the oblique thread realizes anti-slip self-locking of the connection position between the self-locking connector and the external structure.

[0011] In an exemplary embodiment, the helical thread is configured as an English helical thread.

[0012] In an exemplary embodiment, the self-locking structure further includes a thread sealant, and when the self-locking connector is connected to an external structure, the thread sealant seals the oblique thread of the self-locking connector at the position where the self-locking connector is connected to the external structure.

[0013] In an exemplary embodiment, it further includes:

[0014] A three-core plug-in is arranged at one end of the main body away from the self-locking structure, and the three-core plug-in includes a plurality of pins, which transmit signals when powered.

[0015] In an exemplary embodiment, the three-core plug-in further includes a protective wall, which is disposed around the pins and protrudes from an end surface of the body away from the self-locking structure.

[0016] In an exemplary embodiment, a circumferential cross-section of the protection wall is triangular.

[0017] In an exemplary embodiment, an abutment member is provided on one side of the protection wall, and the abutment member is perpendicular to the protection wall and extends in a direction away from the protection wall.

[0018] In an exemplary embodiment, a plurality of anti-slip surfaces are disposed circumferentially of the body, the anti-slip surfaces are arc-shaped, and arc-shaped protruding portions of the anti-slip surfaces are tangent to the body.

[0019] In an exemplary embodiment, an isolation piece is provided between the anti-slip surfaces, and the anti-slip surfaces are connected via the isolation piece.

[0020] Through the utility model, since a self-locking structure is provided, there is no need to provide a seal when the main body is connected to the external structure, so that the connectivity between the pressure sensor and the external structure can be achieved. Therefore, the problem of poor sealing effect can be solved, and the effect of improving the sealing performance can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 According to the structure of the embodiment of the utility model Figure 1 .

[0022] Figure 2 It is a top view according to an embodiment of the utility model.

[0023] Figure 3 It is an installation cross-sectional view according to an embodiment of the utility model.

[0024] In the figure: 1. Main body; 11. Anti-slip surface; 12. Isolation piece; 21. Self-locking connector; 211. Through hole; 22. Oblique thread; 3. Three-core plug-in; 311. Input voltage pin; 312. Ground pin; 313. Output signal pin; 32. Protective wall; 33. Abutment; 331. Make way for fitting space; 332. Marking chamfer. DETAILED DESCRIPTION

[0025] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0027] like Figure 1 and Figure 2 As shown, the utility model provides a self-locking pressure sensor, including a main body 1, which is usually a metal hexagonal structure, so that it is convenient to tighten it with a hexagonal wrench during installation; a pressure chip is provided inside the main body 1, which can convert the air pressure value into a voltage value; wherein the main body 1 can also be set to a cylindrical shape, a square column shape, or other shapes, which can be adjusted according to actual needs.

[0028] In particular, to facilitate installation, the main body 1 is provided with a plurality of anti-slip surfaces 11 in the circumference thereof, wherein the anti-slip surfaces 11 are arc-shaped, and the arc-shaped protruding portions of the anti-slip surfaces 11 are tangent to the main body; and to facilitate processing of the anti-slip surfaces 11, isolation members 12 are provided between the arc-shaped surfaces, and the anti-slip surfaces 11 are connected via the isolation members 12; of course, to further enhance the anti-slip effect, anti-slip grooves, anti-slip pads or other anti-slip structures may also be provided on the anti-slip surfaces 11.

[0029] One end of the main body 1 is integrally formed with a self-locking structure for connecting with an external structure. The external structure may be a tank body of a vacuum gas storage tank for new energy equipment, or may be other structures.

[0030] The self-locking structure includes a self-locking connector 21 and an oblique thread 22 arranged on the self-locking connector 21, wherein the self-locking connector 21 is used to connect to an external structure, and the oblique thread 22 is used to achieve anti-slip self-locking of the connection position between the self-locking connector 21 and the external structure when the self-locking connector 21 is connected to the external structure.

[0031] In order to improve the self-locking effect, the oblique thread 22 is set as an imperial oblique thread; of course, it can also be set to other thread forms with similar effects; it should be noted that, in order to facilitate connection, the self-locking connector 21 is set to a cylindrical shape, and of course it can also be set to other shapes according to actual needs, which will not be repeated here.

[0032] In particular, to further enhance the sealing of the connection, thread sealant (not shown) may be applied to the oblique thread 22 during installation, especially when the self-locking connector 21 is connected to an external structure, to seal the oblique thread 22 .

[0033] Specifically, such as Figure 3As shown, the bevel thread 22 is threadedly connected to the British bevel thread 22 nut on the tank body, and thread sealant is applied to the bevel thread 22 and tightened with a hexagonal wrench to achieve installation and fixation with the tank body, thereby having an anti-loosening self-locking function to avoid loosening due to vibration during driving.

[0034] In addition, a conducting hole 211 is provided inside the self-locking connector 21, so that the vacuum gas storage tank is connected to the internal pressure chip to monitor the air pressure value in real time.

[0035] It should be noted that in addition to being set as a self-locking connector 21 with an oblique thread 22, the self-locking structure can also be set as a snap-on structure or other forms of self-locking structure. As long as the self-locking seal between the main body 1 and the external structure can be achieved, there is no limitation here.

[0036] The end of the body 11 away from the self-locking structure is provided with a three-core plug-in 33, and a plurality of pins are provided in the three-core plug-in 33, which are usually set to three, but can also be set to two; when the pins are set to three, two of them are positive and negative (i.e. Figure 2 The input voltage pin 311 and the ground pin 312 are used for signal transmission (i.e. Figure 2 The signal output pin 313 is used to feed back the voltage value converted by the internal pressure sensing chip to the vehicle control unit; when the vehicle is powered on, the internal pressure chip detects the pressure value, and converts the measured pressure value into a voltage value corresponding to the curve according to the preset pressure curve, and transmits it to the vehicle control unit through the output signal pin 313. When the vehicle control unit determines that the vacuum pressure value is too low, the vacuum pump starts and starts to draw a vacuum.

[0037] In particular, since the surface of the three-core plug-in 3 is flat and the pins are arranged inside the pin holes, in order to reduce the blockage of the pin holes by external moisture and debris, the three-core plug-in 3 is provided with a protective wall 32, which surrounds the pins and protrudes from the end face of the body away from the self-locking structure; since the protective wall 32 protrudes from the end face, it can block the debris or moisture on the side of the three-core plug-in 3, thereby effectively protecting the pins.

[0038] Among them, in order to adapt to the use environment and facilitate processing, the three-core plug-in 3 can be set to a triangular shape with a circumferential cross-section. Similarly, the protective wall 32 can also be set to a triangular shape with a circumferential cross-section. At the same time, in order to reduce the damage caused by external bumps, the sharp corners can be set to rounded corners; of course, the three-core plug-in 3 can also be set to a square or other shape, as long as it is convenient for processing, and it can be adjusted according to actual needs.

[0039] It should be noted that the three-core plug-in 3 can be integrally formed with the main body 1, and in some special cases, the three-core plug-in 3 can also be set as a structure that can be disassembled and assembled with the main body 1, such as a snap-on structure, a threaded structure, a plug-in structure, etc., so as to facilitate use in specific environments.

[0040] In order to effectively fit with other components during installation, abutment 33 is provided on one side of the protective wall 32. The abutment 33 is perpendicular to the protective wall 32 and extends in a direction away from the protective wall 32, so that the abutment 33 and the protective wall 32 form a yielding fitting space 331. In particular, a plurality of yielding fitting spaces 331 can be provided according to the number of abutments 33. In addition, in order to facilitate the identification of the fitting direction of the yielding fitting space 331, an identification chamfer 332 can be provided at one end of the abutment 33 close to the self-locking structure, thereby further facilitating installation.

[0041] The beneficial effects of the utility model are as follows:

[0042] The main body 11 is connected to the tank body of the vacuum gas storage tank through the self-locking structure 2, and is installed on the British oblique thread nut on the tank body. During installation, thread sealant is applied to the oblique thread 22, and it is tightened with a hexagonal wrench; at the same time, it is connected to the whole vehicle through the three-core plug-in 3. When the whole vehicle is powered on, the internal sensor starts to work to detect the pressure, and converts the pressure value into a corresponding voltage value through a preset pressure curve, and feeds it back to the control unit of the whole vehicle. When the control unit determines that the vacuum degree is too low, the vacuum pump is powered on, and when the vacuum degree reaches the requirement, the vacuum pump is powered off and stops working.

[0043] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A self-locking pressure sensor, characterized in that: include: Ontology(1); A self-locking structure is arranged at one end of the body (1) and is integrated with the body (1); The body (1) is sealed and connected to the external structure via the self-locking structure; The self-locking structure comprises a self-locking connector (21) and an oblique thread (22) arranged on the self-locking connector (21); when the self-locking connector (21) is connected to an external structure, the oblique thread (22) realizes anti-slip self-locking of the connection position between the self-locking connector (21) and the external structure.

2. The self-locking pressure sensor according to claim 1, characterized in that: The oblique thread (22) is configured as an English oblique thread.

3. The self-locking pressure sensor according to claim 1, characterized in that: The self-locking structure further comprises a thread sealant, and when the self-locking connector (21) is connected to an external structure, the thread sealant seals the oblique thread (22) of the self-locking connector (21) at the position where it is connected to the external structure.

4. The self-locking pressure sensor according to claim 1, characterized in that: Also includes: A three-core plug-in (3), wherein the three-core plug-in (3) is arranged at an end of the main body away from the self-locking structure, and the three-core plug-in (3) comprises a plurality of pins, and the pins transmit signals when powered.

5. The self-locking pressure sensor according to claim 4, characterized in that: The three-core plug-in (3) further comprises a protective wall (32), wherein the protective wall (32) surrounds the pins and protrudes from an end surface of the body away from the self-locking structure.

6. The self-locking pressure sensor according to claim 5, characterized in that: The circumferential cross section of the protection wall (32) is triangular.

7. The self-locking pressure sensor according to claim 5, characterized in that: A contact piece (33) is provided on one side of the protective wall (32); the contact piece (33) is perpendicular to the protective wall (32) and extends in a direction away from the protective wall (32).

8. The self-locking pressure sensor according to claim 1, characterized in that: A plurality of anti-slip surfaces (11) are arranged around the body, the anti-slip surfaces (11) are arc-shaped, and the arc-shaped protruding parts of the anti-slip surfaces (11) are tangent to the body (1).

9. The self-locking pressure sensor according to claim 8, characterized in that: An isolation piece (12) is provided between the anti-slip surfaces (11), and the anti-slip surfaces (11) are connected via the isolation piece (12).

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