Temperature sensor for air pump of air suspension

Abstract

The utility model discloses a temperature sensor for an air pump of an air suspension, which comprises a metal shell, a mounting seat and a temperature sensing element, a mounting cavity with an opening at one end is arranged in the metal shell, and a limiting part is arranged on the side wall of the mounting cavity; the mounting base is matched with the mounting cavity, the mounting base is inserted into the opening, a matching part is arranged on the circumference of the mounting base, the limiting part is matched with the matching part in a limiting mode so as to limit rotation of the mounting base, and a connecting terminal is arranged at the end of the mounting base; and the temperature sensing element is arranged at the bottom of the mounting cavity and is connected with the connecting terminal. According to the invention, the installation seat can be peripherally limited, so that the rotation of the installation seat is prevented, the relative fixation of the metal shell and the installation seat is ensured, and the torsion of the internal lead is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a temperature sensor for an air suspension air pump. Background Art

[0002] The popularity of air suspension systems in new energy vehicles is increasing, driven by multiple factors. First, with the rapid development of the new energy vehicle market, consumer demand for vehicle comfort and high-end features is also increasing. As a high-end feature, air suspension systems can effectively improve vehicle ride comfort and handling stability, and are therefore gaining popularity among consumers. To monitor the temperature of the air pump within the air suspension system in real time, a temperature sensor is typically installed within the pump.

[0003] Patent CN116972995A discloses a coolant temperature sensor, comprising: a main body, on which a first connecting end is provided, and the inner wall of the first connecting end is radially provided with a first fixing portion; a probe, on which a second connecting end is provided, and the inner wall of the second connecting end is radially provided with a second fixing portion; a thermal insulation member, arranged between the main body and the probe, comprising a first blocking portion connected to the first fixing portion and a second blocking portion connected to the second fixing portion, wherein a third blocking portion is further provided between the first blocking portion and the second blocking portion, the third blocking portion extending in the radial direction of the thermal insulation member, one side of which is fitted and connected to the first connecting end toward the probe direction, and the other side of which is fitted and connected to the second connecting end toward the main body direction, so as to realize the connection between the main body and the probe.

[0004] The above-mentioned prior art is connected to the connector via the flange of the third connection end, and can only position the connector axially. As the vehicle vibrates during travel, the connector will rotate relative to the third connection section, causing the internal lead to twist and break. Utility Model Content

[0005] The purpose of the present invention is to overcome the above technical deficiencies and to provide a temperature sensor for an air suspension air pump, so as to solve the technical problem in the prior art that the connector may rotate relative to the third connecting section, causing the internal lead to twist and break.

[0006] In order to achieve the above technical purpose, the present invention adopts the following technical solutions:

[0007] The utility model provides a temperature sensor for an air suspension air pump, comprising:

[0008] A metal shell having an installation cavity with an open end, wherein a side wall of the installation cavity is provided with a limiting portion;

[0009] a mounting seat, the mounting seat being adapted to the mounting cavity and inserted into the opening; a mating portion being provided on the circumference of the mounting seat; the limiting portion being in positional engagement with the mating portion to limit the rotation of the mounting seat; and a connecting terminal being provided at an end of the mounting seat; and

[0010] A temperature sensing element is arranged at the bottom of the installation cavity, and the temperature sensing element is connected to the connecting terminal.

[0011] In some embodiments, a step is provided in the mounting cavity, the mounting seat abuts against the step, a hanging platform is provided on the circumference of the mounting seat, and an inward flange is provided at the open end of the mounting cavity, and the flange is fitted with the hanging platform to limit the axial movement of the mounting seat.

[0012] In some embodiments, one of the limiting portion and the matching portion is a limiting groove, and the other is a limiting protrusion.

[0013] In some embodiments, the flange is provided with a notch, the notch constitutes the limiting groove, and the limiting protrusion is located on the hanging platform.

[0014] In some embodiments, there are two connecting terminals, one of which is located in the middle of the mounting seat, and the other is eccentrically arranged.

[0015] In some embodiments, the connecting terminal is elastically telescopically arranged along the axial direction.

[0016] In some embodiments, a seal is further provided between the mounting seat and the mounting cavity.

[0017] In some embodiments, a ring-shaped mounting groove is provided on the circumference of the mounting seat, and the mounting groove is located at the end of the mounting seat. The sealing member includes a sealing ring, and the sealing ring is provided in the mounting groove.

[0018] In some embodiments, the temperature sensor for the air suspension air pump further includes a pin, which is located in the mounting cavity, one end of the pin extends into the mounting seat and is connected to the connecting terminal, and the other end of the pin is connected to the pin.

[0019] In some embodiments, the outer periphery of the metal shell is further provided with threads; and / or

[0020] The gap between the installation cavity and the temperature sensing element is also filled with heat-conducting material.

[0021] Compared with the prior art, the temperature sensor for an air suspension air pump provided by the utility model has a metal shell having a mounting cavity with an opening at one end, and a limiting portion is provided at the side wall of the mounting cavity, the mounting seat is adapted to the mounting cavity, the mounting seat can be installed to the opening, a matching portion is provided on the circumferential side of the mounting seat, the limiting portion is limited and matched with the matching portion, so that the mounting seat can be circumferentially limited to prevent the mounting seat from rotating, ensuring that the metal shell and the mounting seat are relatively fixed, thereby avoiding twisting of the internal lead.

[0022] The above description is only an overview of the technical solution of the present invention. In order to enable a clearer understanding of the technical means of the present invention and to implement it according to the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. The specific implementation methods of the present invention are given in detail in the following embodiments and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of an embodiment of a temperature sensor for an air suspension air pump provided by the present utility model;

[0024] Figure 2 yes Figure 1 A top view of the temperature sensor for the air suspension air pump;

[0025] Figure 3 yes Figure 1 Front view of the temperature sensor for the air suspension air pump;

[0026] Figure 4 yes Figure 1 Cross-sectional view of a temperature sensor for an air suspension air pump.

[0027] Description of reference numerals:

[0028] 1-metal shell, 11-mounting cavity, 12-limiting groove, 13-step, 14-flanged edge, 2-mounting seat, 21-limiting protrusion, 22-connecting terminal, 23-hanging platform, 3-temperature sensing element, 31-pin, 4-seal, 5-pin. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] In order to solve the technical problem in the prior art that the connector may rotate relative to the third connecting section, causing the internal lead to twist and break, the utility model provides a temperature sensor for an air suspension air pump, which can circumferentially limit the mounting base to prevent the mounting base from rotating, ensuring that the metal shell and the mounting base are relatively fixed, thereby avoiding twisting of the internal lead.

[0031] See also Figure 1 , Figure 1 This is a schematic structural diagram of a temperature sensor for an air suspension air pump in one embodiment of the present utility model.

[0032] The utility model provides a temperature sensor for an air suspension air pump, comprising a metal shell 1, a mounting base 2 and a temperature sensing element 3. The metal shell 1 is provided with a mounting cavity 11 with an opening at one end, and the side wall of the mounting cavity 11 is provided with a limiting portion; the mounting base 2 is adapted to the mounting cavity 11, and the mounting base 2 is inserted into the opening. A matching portion is provided on the circumference of the mounting base 2, and the limiting portion is limitedly matched with the matching portion to limit the rotation of the mounting base 2. A connecting terminal 22 is provided at the end of the mounting base 2; the temperature sensing element 3 is provided at the bottom of the mounting cavity 11, and the temperature sensing element 3 is connected to the connecting terminal 22.

[0033] In this embodiment, the metal shell 1 has a mounting cavity 11 with an opening at one end, and a limiting portion is provided on the side wall of the mounting cavity 11. The temperature sensing element 3 is fixedly installed at the bottom of the mounting cavity 11, and the temperature sensing element 3 is connected to the connecting terminal 22. The mounting seat 2 is adapted to the mounting cavity 11, and the mounting seat 2 can be installed to the opening. A matching portion is provided on the circumferential side of the mounting seat 2, and the limiting portion is limited and matched with the matching portion, so that the mounting seat 2 can be circumferentially limited to prevent the mounting seat 2 from rotating, ensuring that the metal shell 1 and the mounting seat 2 are relatively fixed, thereby avoiding twisting of the internal lead.

[0034] In this embodiment, the mounting base 2 is made of plastic.

[0035] In some embodiments, a step 13 is provided in the mounting cavity 11, and the mounting seat 2 abuts against the step 13. A hanging platform 23 is also provided on the circumference of the mounting seat 2. The opening end of the mounting cavity 11 is also provided with an inward flange 14, and the flange 14 is in contact with the hanging platform 23 to limit the axial movement of the mounting seat 2.

[0036] In this embodiment, the mounting cavity 11 is a cavity structure in the shape of a step 13, and the mounting cavity 11 includes a first section, a second section, a third section and a fourth section connected in sequence. The first section, the second section, the third section and the fourth section are arranged in sequence from the bottom to the opening, and the diameters of the first section, the second section, the third section and the fourth section increase in sequence. The step 13 is formed between the third section and the fourth section. A boss is provided on the circumference of one end of the mounting seat 2, and the end surface of the boss constitutes the hanging platform 23. The diameter of the boss is adapted to the diameter of the fourth section, the boss extends into the fourth section and its end face abuts against the step 13, thereby limiting the movement of the mounting seat 2 toward the first section. After the mounting seat 2 is installed to the fourth section, the end of the fourth section is bent inward to form a flange 14, and the flange 14 forms a closing structure and fits with the hanging platform 23, thereby limiting the outward movement of the mounting seat 2. By cooperating with the step 13 and the flange 14, the purpose of axially limiting the mounting seat 2 is achieved.

[0037] In some embodiments, one of the limiting portion and the matching portion is a limiting groove 12 , and the other is a limiting protrusion 21 .

[0038] In this embodiment, the limiting groove 12 can be arranged on the side wall of the installation cavity 11 or on the outer periphery of the installation seat 2. When the limiting groove 12 is arranged on the side wall of the installation cavity 11, the limiting protrusion 21 is arranged on the outer periphery of the installation seat 2 and corresponds to the limiting groove 12. When the limiting groove 12 is arranged on the outer periphery of the installation seat 2, the limiting protrusion 21 is arranged on the side wall of the installation cavity 11 and corresponds to the limiting groove 12.

[0039] In some embodiments, the flange 14 is provided with a notch, the notch constitutes the limiting groove 12 , and the limiting protrusion 21 is located on the hanging platform 23 .

[0040] In this embodiment, in order to facilitate processing and assembly, a notch may be provided at the flange 14 to form the limiting groove 12 , and a protrusion may be provided at the hanging platform 23 to form the limiting protrusion 21 .

[0041] In some embodiments, there are two connecting terminals 22 , one of which is located in the middle of the mounting base 2 , and the other connecting terminal 22 is eccentrically disposed.

[0042] In this embodiment, there are two connecting terminals 22. Correspondingly, the temperature sensing element 3 is provided with two pins 31. The two pins 31 correspond one-to-one to the two connecting terminals 22. Each pin 31 is connected to the corresponding connecting terminal 22. The electrical connecting terminal 22 is connected to the vehicle controller. In order to adapt to the socket of the controller, one of the connecting terminals 22 is located in the middle of the mounting base 2, and the other connecting terminal 22 is eccentrically arranged. Such an arrangement can prevent incorrect insertion.

[0043] In some embodiments, the connecting terminal 22 is elastically configured to extend and retract along the axial direction.

[0044] In this embodiment, the sensor is installed in the pump body of the vehicle's air suspension system, and its connecting terminal 22 is also plugged into the vehicle's controller. The vibration generated during the vehicle's driving may cause the connecting terminal 22 to become loose from the controller, resulting in poor signal contact. In order to avoid the above problem, the connecting terminal 22 is configured to elastically expand and contract along the axial direction, that is, the end portion of the connecting terminal 2 extending from the mounting seat 2 is elastically expanded and contracted relative to the mounting seat 2 along the axial direction to achieve a flexible connection. Even if looseness occurs, the connecting terminal 22 can always be in contact with the controller's jack under the action of elastic force, thereby ensuring signal transmission.

[0045] Specifically, the connecting terminal 22 includes a needle tube, a needle shaft and a spring. One end of the needle tube is inserted into the mounting seat 2 and connected to the pin 31. The needle shaft is slidably installed in the needle tube and one end thereof extends out of the needle tube. The spring is located at the bottom of the needle tube. The spring is connected to the needle shaft so that the needle shaft is elastically retractable.

[0046] In some embodiments, a sealing member 4 is further provided between the mounting seat 2 and the mounting cavity 11 .

[0047] In this embodiment, in order to improve the sealing of the installation cavity 11, a seal 4 is provided between the installation seat 2 and the side wall of the installation cavity 11. The seal 4 abuts against the circumference of the installation seat 2 and the side wall of the installation cavity 11, thereby achieving the purpose of sealing.

[0048] In some embodiments, the mounting base 2 is provided with an annular mounting groove on its circumference, the mounting groove being located at an end of the mounting base 2, and the sealing member 4 comprises a sealing ring disposed in the mounting groove. This arrangement facilitates processing and installation of the sealing ring.

[0049] In some embodiments, the temperature sensor for the air suspension air pump further includes a pin 5 , which is located in the mounting cavity 11 , one end of the pin 5 extends into the mounting seat 2 and is connected to the connecting terminal 22 , and the other end of the pin 5 is connected to the pin 31 .

[0050] In this embodiment, the temperature sensing element 3 is located at the bottom of the accommodating cavity, that is, in the first section, and the connecting terminal 22 is inserted in the mounting base 2, and there is a certain distance between the two. Therefore, a pin 5 is provided to connect the connecting terminal 22 and the pin 31. The pin 31 is inserted into one end of the pin 5 and welded, and the other end of the pin 5 is inserted into the connecting terminal 22 and welded. Since there are two connecting terminals 22 and two pins 31, there are also two pins 5.

[0051] In some embodiments, the outer periphery of the metal shell 1 is further provided with threads.

[0052] In this embodiment, when in use, the sensor of the present application needs to be installed on the pump body of the air pump. In order to facilitate connection, the pump body is provided with a threaded hole, the outer periphery of the metal shell 1 is provided with a thread, the metal shell 1 is threadedly connected to the pump body, and the air pump and the metal shell 1 are sealed by a sealing ring.

[0053] In some embodiments, the gap between the installation cavity 11 and the temperature sensing element 3 is further filled with a heat-conducting material.

[0054] In order to better understand the present invention, the following Figures 1 to 4 The technical solution of the utility model is described in detail:

[0055] First, one end of the pin 5 is inserted into the connecting terminal 22, and then the pin 5 and the connecting terminal 22 are welded and connected. The two groups of pins 5 and the connecting terminal 22 are placed in a mold for injection molding of the mounting base 2, so that the pins 5, the connecting terminal 22 and the mounting base 2 form an integral structure. The two pins 31 of the temperature sensing element 3 are respectively inserted into the two pins 5 and welded to fix. Finally, a certain amount of heat-conducting material is injected into the mounting cavity 11, and the temperature sensing element 3 is extended into the heat-conducting material. At this time, the mounting base 2 is in contact with the step 13, and the limiting protrusion 21 is located in the limiting groove 12. Finally, the end of the metal shell 1 is closed to form a flange 14 to fix the mounting base 2, so as to achieve axial and circumferential positioning of the mounting base 2 to prevent the two from rotating relative to each other.

[0056] This application transmits the temperature signal to the vehicle controller through the temperature sensing element 3, monitors the temperature of the air pump in real time, realizes intelligent start and stop of the air pump, ensures the safe operation of the air suspension system, and thus achieves the purpose of protecting the air pump and the vehicle body.

[0057] The present application realizes a flexible connection with the controller through an elastically retractable connecting terminal 22, and has an anti-vibration function.

[0058] This application is simple and convenient, has no secondary pollution, is modular, compact, multi-purpose and has reliable performance.

[0059] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A temperature sensor for an air suspension air pump, characterized in that: It includes: A metal shell having an installation cavity with an open end, wherein a side wall of the installation cavity is provided with a limiting portion; a mounting seat, the mounting seat being adapted to the mounting cavity and inserted into the opening; a mating portion being provided on the circumference of the mounting seat; the limiting portion being in positional engagement with the mating portion to limit the rotation of the mounting seat; and a connecting terminal being provided at an end of the mounting seat; and A temperature sensing element is arranged at the bottom of the installation cavity, and the temperature sensing element is connected to the connecting terminal.

2. The temperature sensor for an air suspension air pump according to claim 1, characterized in that: A step is provided in the installation cavity, the installation seat abuts against the step, a hanging platform is provided on the circumference of the installation seat, and an inward flange is provided at the open end of the installation cavity, the flange is fitted with the hanging platform to limit the axial movement of the installation seat.

3. The temperature sensor for an air suspension air pump according to claim 2, characterized in that: One of the limiting portion and the matching portion is a limiting groove, and the other is a limiting protrusion.

4. The temperature sensor for an air suspension air pump according to claim 3, characterized in that: The flange is provided with a notch, the notch constitutes the limiting groove, and the limiting protrusion is located on the hanging platform.

5. The temperature sensor for an air suspension air pump according to claim 1, characterized in that: There are two connecting terminals, one of which is located in the middle of the mounting seat, and the other is eccentrically arranged.

6. The temperature sensor for an air suspension air pump according to claim 1, characterized in that: The connecting terminal is elastically telescopically arranged along the axial direction.

7. The temperature sensor for an air suspension air pump according to claim 1, characterized in that: A sealing member is further provided between the mounting seat and the mounting cavity.

8. The temperature sensor for an air suspension air pump according to claim 7, characterized in that: The circumference of the mounting seat is provided with an annular mounting groove, the mounting groove is located at the end of the mounting seat, and the sealing member includes a sealing ring, which is arranged in the mounting groove.

9. The temperature sensor for an air suspension air pump according to claim 1, wherein: The temperature sensor for the air suspension air pump further includes a pin, which is located in the mounting cavity. One end of the pin extends into the mounting seat and is connected to the connecting terminal, and the other end of the pin is connected to the pin of the temperature sensing element.

10. The temperature sensor for an air suspension air pump according to claim 1, wherein: The outer periphery of the metal shell is further provided with threads; and / or The gap between the installation cavity and the temperature sensing element is also filled with heat-conducting material.

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