Resistance type engine oil pressure sensor structure

Abstract

In order to solve the technical problem, the utility model provides a resistance-type engine oil pressure sensor structure, which comprises a shell, a first groove, a second groove, a third groove, a fourth groove, a fourth groove, a fourth groove, a fourth groove and a fifth groove, and is characterized in that the shell is made of aluminum; the ceramic resistor is arranged on the bottom surface of the groove I; one end of the connector shell is installed in the first groove, the other end of the connector shell extends out of the first groove, a pin is installed in the connector shell, a plurality of clamping jaws are arranged on the end face, located in the first groove, of the connector shell, and the clamping jaws make contact with the outer wall of the ceramic resistor to prevent the ceramic resistor from falling off. According to the resistance type engine oil pressure sensor structure, the clamping jaw is additionally arranged on the connector shell, and the ceramic resistor can be limited in a range surrounded by the clamping jaw, so that the stability and the reliability of installation of the ceramic resistor are improved, the ceramic resistor is prevented from falling off, and the overall performance of the engine oil pressure sensor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a resistance type oil pressure sensor structure. Background Art

[0002] A car's oil pressure sensor is a crucial device for detecting the engine's oil pressure. The data collected can help control the engine's proper operation. The oil pressure sensor, installed in the engine's lubrication system's main oil channel, detects the engine's oil pressure. When the oil pressure is detected as excessively high, the oil pressure signal is output as a voltage to the ECU (Electronic Control Unit). The ECU then illuminates the oil light on the oil pressure gauge, prompting the owner to take appropriate measures, such as changing the oil or oil filter. When the oil pressure is detected as excessively low, the oil pressure signal is also output as a voltage to the ECU, which then illuminates the oil light on the oil pressure gauge. The ECU also controls the variable oil pump, controlling the oil supply to maintain optimal engine lubrication.

[0003] Oil pressure sensors play a crucial role in engines. The resistors in these sensors are typically made of ceramic material through a specialized process. Ceramic is a high-quality material with high elasticity, corrosion resistance, wear resistance, and vibration resistance. Ceramic's thermal stability significantly exceeds that of thick-film resistor sensors, extending its operating temperature range to -40°C to 125°C. It also maintains high accuracy and stability even at high temperatures.

[0004] However, small ceramic resistors are difficult to fix and are prone to falling off during installation. Moreover, since the resistors themselves are easily broken, the sensor is easily damaged during use. Utility Model Content

[0005] To this end, the technical problem to be solved by the present invention is to overcome the problem in the prior art that the resistor is easily detached at the installation position of the sensor due to the material properties of the resistor on the sensor, making it difficult to ensure the stability of the pressure sensor body after installation and connection.

[0006] In order to solve the above technical problems, the present utility model provides a resistive oil pressure sensor structure, including: a shell, one end of which is provided with a concave groove 1, and the material of the shell is aluminum; a ceramic resistor, which is arranged on the bottom surface of the groove 1; a connector shell, one end of which is installed in the groove 1, and the other end of the connector shell extends out of the groove 1, a pin needle is installed in the connector shell, and a plurality of claws are provided on the end surface of the connector shell located in the groove 1, and the plurality of claws are in contact with the outer wall of the ceramic resistor to prevent the ceramic resistor from falling off.

[0007] In one embodiment of the present invention, the cross-section of the groove one is circular, and a boss one is provided at the center of the bottom surface of the groove one. The cross-section of the boss one is circular, and the boss one and the groove are arranged coaxially, and one end face of the ceramic resistor is in contact with the boss one.

[0008] In one embodiment of the present invention, a second annular boss is provided on the bottom surface of the first groove, the second annular boss is coaxially arranged with the boss, and the outer circumference of the circular interface of the ceramic resistor contacts the second annular boss.

[0009] In one embodiment of the present invention, an annular groove 2 is provided between the annular boss 2 and the boss 1, a sealing ring 1 is provided in the annular groove 2, and the sealing ring 1 is in contact with the circular end face of the ceramic resistor.

[0010] In one embodiment of the present invention, the cross section of the ceramic resistor is circular, and the outer diameter of the ceramic resistor is larger than the outer diameter of the annular boss 2.

[0011] In one embodiment of the present utility model, a plurality of bosses three are provided on the end face of the connector housing located in the groove one, the bosses three are on the same circumference, and gaps are provided between the bosses three, the plurality of claws and the plurality of bosses three are arranged in a one-to-one correspondence, and the claws are fixed on the end face of the boss three.

[0012] In one embodiment of the present invention, an avoidance groove is provided on the end surface of the boss 3 where the claws are provided, and the avoidance groove is used to avoid burrs of the ceramic resistor.

[0013] In one embodiment of the present invention, the ceramic resistor is confined within a circumference formed by a plurality of claws.

[0014] In one embodiment of the present invention, a groove three is provided at one end of the connector housing disposed in the groove one, and a flexible circuit board is disposed between the ceramic resistor and the groove three.

[0015] In one embodiment of the present invention, a gasket is sleeved on the outside of the other end of the shell away from the groove.

[0016] The above technical solution of the utility model has the following beneficial effects compared with the prior art:

[0017] The resistive oil pressure sensor structure described in the utility model adds claws on the connector housing, which can confine the ceramic resistor within the range surrounded by the claws, thereby improving the stability and reliability of the ceramic resistor installation, avoiding the falling off of the ceramic resistor, and improving the overall performance of the oil pressure sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the content of the utility model easier to understand, the utility model is further described in detail below based on the specific embodiments of the utility model and in conjunction with the accompanying drawings, wherein

[0019] Figure 1 This is a schematic diagram of the external structure of the resistive oil pressure sensor structure in a preferred embodiment of the present utility model;

[0020] Figure 2 This is a structural diagram of a connector housing in a preferred embodiment of the present utility model;

[0021] Figure 3 This is a top view of the resistive oil pressure sensor structure in a preferred embodiment of the present utility model;

[0022] Figure 4 In the preferred embodiment of the present utility model Figure 3 Cross-section along the AA direction;

[0023] Figure 5 In the preferred embodiment of the present utility model Figure 3 Cross-sectional view along the middle BB direction.

[0024] Explanation of the reference numerals in the accompanying drawings in the specification: housing 1, groove 11, through hole 110, boss 111, annular boss 2 112, annular groove 2 113, sealing ring 114, conical surface 115, ceramic resistor 2, connector housing 3, claw 31, boss 3 32, avoidance groove 321, groove 3 33, pin 4, gasket 5. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0026] Reference Figure 1-5 As shown, the resistive oil pressure sensor structure of the present invention includes: a housing 1, one end of which is provided with a recessed groove 11, and the material of the housing 1 is aluminum; a ceramic resistor 2, which is arranged on the bottom surface of the groove 11; a connector housing 3, one end of which is installed in the groove 11, and the other end of the connector housing 3 extends out of the groove 11, and a pin needle 4 is installed in the connector housing 3. The end surface of the connector housing 3 located in the groove 11 is provided with a plurality of claws 31, and the plurality of claws 31 are in contact with the outer wall of the ceramic resistor 2 to prevent the ceramic resistor 2 from falling off.

[0027] In the above structure, the cross-section of groove 11 is circular, and a boss 111 is provided at the center of the bottom surface of groove 11. Boss 111 is circular in cross-section and coaxial with groove 11. One end face of ceramic resistor 2 contacts boss 111. Ceramic resistor 2 is mounted on the circular surface of boss 111, and its outer diameter is larger than that of boss 111.

[0028] In the above structure, an annular boss 2 112 is provided on the bottom surface of the groove 11. The annular boss 2 112 is coaxially arranged with the boss 1 111, and the outer circumference of the circular interface of the ceramic resistor 2 contacts the annular boss 2 112. The cross-section of the ceramic resistor 2 is circular, and the outer diameter of the ceramic resistor 2 is larger than the outer diameter of the annular boss 2 112. The boss 1 111 and the annular boss 2 112 form an inner and outer double-layer structure. The annular boss 2 112 can effectively avoid the outer edge of the ceramic resistor 2, making the ceramic resistor 2 less likely to break.

[0029] In the above structure, an annular groove 113 is provided between the annular boss 112 and the boss 111. A sealing ring 114 is located within the annular groove 113, and the sealing ring 114 contacts the circular end surface of the ceramic resistor 2. A through hole 110 is provided at the center of the axis of the housing 1. The through hole 110 extends to the end of the boss 111 where it contacts the ceramic resistor 2. A tapered surface 115 is provided on the inner wall of the through hole 110 at one end of the boss 111. The through hole 110 passes through the boss 111 and connects to the groove 111. The presence of the boss 111 reduces the impact of airflow entering the through hole 110 on the ceramic resistor 2 and the sealing ring 114. The presence of the sealing ring 114 also improves the sealing effect between the ceramic resistor 2 and the housing 1.

[0030] In the above structure, the connector housing 3 is provided with a plurality of bosses 32 on the end face located within the groove 11. The bosses 32 are located on the same circumference, and gaps are provided between the bosses 32. The claws 31 and the bosses 32 are provided in a one-to-one correspondence, and the claws 31 are fixed to the end faces of the bosses 32. The end face of the boss 3 32 provided with the claws 31 is provided with an avoidance groove 321, which is used to avoid burrs on the ceramic resistor 2. Specifically, the avoidance groove 321 is located at the root of the connection between the claw 31 and the boss 3 32, which can ensure that the ceramic resistor 2 is placed in the designated position.

[0031] In the above structure, the ceramic resistor 2 is confined within the circumference formed by the plurality of claws 31. The number of the plurality of claws 31 is preferably set to three.

[0032] In the above structure, one end of the connector housing 3 disposed in the groove 11 is provided with a groove 3 33 , and a flexible circuit board is disposed between the ceramic resistor 2 and the groove 3 33 .

[0033] In the above structure, a gasket 5 is sleeved on the outer side of the other end of the shell 1 away from the groove 11.

[0034] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A resistive oil pressure sensor structure, characterized in that: include, A shell, one end of which is provided with a recessed groove 1, and the shell is made of aluminum; a ceramic resistor disposed on the bottom surface of the first groove; A connector housing, one end of which is installed in groove one, and the other end of the connector housing extends out of groove one. A pin is installed in the connector housing, and a plurality of claws are provided on the end surface of the connector housing located in groove one. The plurality of claws contact the outer wall of the ceramic resistor to prevent the ceramic resistor from falling off.

2. The resistive oil pressure sensor structure according to claim 1, characterized in that: The cross section of the groove 1 is circular, and a boss 1 is provided at the center of the bottom surface of the groove 1. The cross section of the boss 1 is circular, and the boss 1 and the groove are arranged coaxially, and one end face of the ceramic resistor is in contact with the boss 1.

3. The resistive oil pressure sensor structure according to claim 2, characterized in that: The bottom surface of the groove 1 is provided with an annular boss 2, the annular boss 2 and the boss are arranged coaxially, and the outer circumference of the circular interface of the ceramic resistor is in contact with the annular boss 2.

4. The resistive oil pressure sensor structure according to claim 3, characterized in that: An annular groove 2 is provided between the annular boss 2 and the boss 1. A sealing ring 1 is provided in the annular groove 2. The sealing ring 1 contacts the circular end face of the ceramic resistor.

5. The resistive oil pressure sensor structure according to claim 4, characterized in that: The cross section of the ceramic resistor is circular, and the outer diameter of the ceramic resistor is larger than the outer diameter of the second annular boss.

6. The resistive oil pressure sensor structure according to claim 1, characterized in that: The connector housing is provided with a plurality of bosses three on the end face located in the groove one, the bosses three are on the same circumference, and gaps are provided between the bosses three, the plurality of claws and the plurality of bosses three are provided in a one-to-one correspondence, and the claws are fixed on the end face of the boss three.

7. The resistive oil pressure sensor structure according to claim 6, characterized in that: An avoidance groove is provided on the end surface of the boss 3 where the claws are provided, and the avoidance groove is used to avoid the burrs of the ceramic resistor.

8. The resistive oil pressure sensor structure according to claim 6, characterized in that: The ceramic resistor is confined within a circumference formed by a plurality of claws.

9. The resistive oil pressure sensor structure according to claim 1, characterized in that: A groove three is provided at one end of the connector housing disposed in the groove one, and a flexible circuit board is disposed between the ceramic resistor and the groove three.

10. The resistive oil pressure sensor structure according to claim 1, characterized in that: A gasket is sleeved on the outside of the other end of the shell away from the first groove.

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