Vehicle gearbox rotating speed and temperature sensor with bolt anti-falling structure

Abstract

The invention belongs to the technical field of temperature measurement, and provides a vehicle gearbox rotating speed temperature sensor with a bolt anti-falling structure. The sensor comprises a bolt anti-disengaging structure and a sensor shell, the bolt anti-disengaging structure comprises a plastic nut and an anti-disengaging ring, the sensor shell is provided with at least two assembling holes matched with the bolt anti-disengaging structure, the surface of the anti-disengaging ring is provided with a positioning ring groove, and the assembling holes are internally provided with annular protruding parts matched with the positioning ring groove. An assembling ring groove for containing the plastic nut is formed in the anti-disengaging ring. The plastic nut is matched with the anti-falling ring, and in the process of installing and screwing the plastic nut, the plastic nut is matched with an inner hole of the anti-falling ring to be embedded into the anti-falling ring, so that the plastic nut and the bolt are prevented from falling off; and meanwhile, as the plastic nut is easy to deform when being embedded into the anti-falling ring, the transverse size of the plastic nut is increased, the anti-falling ring and the bolt are pressed, and the stability of the bolt anti-falling structure in the assembly hole is improved.

Description

Technical Field

[0001] The invention relates to the technical field of temperature measurement, and in particular provides a vehicle gearbox speed temperature sensor with a bolt anti-slip structure. Background Art

[0002] At present, the basic operation method of assembling sensors by manufacturers is: the operator takes the screw, passes it through the sensor screw hole, and then uses torque to tighten the screw to fix the sensor on the gearbox housing. The temperature and speed sensors used in the market are assembled separately using Hall integrated circuit components and temperature sensitive components. Most of them use temperature sensitive components to directly contact the detected medium to output resistance signals, and Hall integrated circuits collect voltage or current signals of the tooth top and tooth root when the gear rotates through the Hall principle. The sensor is connected to the electronic controller unit through a wire to transmit the signal to the electronic controller unit. After the electronic controller unit collects the temperature and speed signals, it can control the vehicle more effectively. Among them, the temperature sensitive element of the sensor is usually fixed in two ways. One is to fix it inside the sensor by plastic molding, and the other is to fix it on the surface of the sensor by resin or adhesive glue, exposing the element sensing area outside the product. Prior art CN111474378A provides a gearbox speed sensor and an assembly method, including a first protective shell and a second protective shell, wherein a PIN pin is installed in the first protective shell, wherein the first protective shell and the PIN pin are formed as a whole by injection molding; a Hall chip is installed at the bottom of the first protective shell, and a hot spot is arranged at the outer edge of the top of the second protective shell; and the interior of the second protective shell is filled with sealing glue. The Hall chip and the PIN pin in the protective shell of the present invention adopt a metal melting welding process to avoid the melting and separation of the solder under extreme high temperature conditions, causing the sensor to fail; the first protective shell and the second protective shell are assembled by assembly to avoid high temperature impact on the Hall chip during injection molding; the second protective shell is filled with sealing glue to achieve the isolation of the Hall chip and the internal electrical connection from the external environment. The prior art does not assemble a temperature sensitive element, and the thermal conductivity of the plastic shell is relatively low. The temperature in the gearbox needs to be transferred to the temperature sensitive element after a period of time. The temperature sensitive element will produce a temperature hysteresis effect. During this hysteresis process, the temperature may rise sharply, which may affect the sealing of the overall gearbox or other bad alarms. The inventor believes that there is much room for improvement in the prior art. Summary of the invention

[0003] The purpose of the present invention is to prevent the bolts from falling into the gearbox during the sensor assembly process, causing cleaning difficulties or even the entire gearbox being scrapped. Secondly, it is to prevent the temperature-sensitive sensor element from being broken down by static electricity and to prevent the temperature response hysteresis effect of the temperature-sensitive sensor element from seriously affecting the sealing of the gearbox and causing the gearbox to be scrapped. To this end, the present invention provides a vehicle gearbox speed temperature sensor with a bolt anti-slip structure, including a bolt anti-slip structure and a sensor housing, the bolt anti-slip structure includes a plastic nut and an anti-slip ring, the sensor housing is provided with at least two assembly holes that cooperate with the bolt anti-slip structure, the surface of the anti-slip ring is provided with a positioning ring groove, the interior of the assembly hole is provided with an annular protrusion that cooperates with the positioning ring groove, and the interior of the anti-slip ring is provided with an assembly ring groove for accommodating the plastic nut. An anti-slip ring is set inside the assembly hole, and the anti-slip ring is fixed in contact with the bolt, which reduces the processing requirements of the sensor housing. The method of improving the assembly accuracy of the inner surface of the anti-slip ring is adopted instead of processing the sensor housing, thereby reducing the processing cost. A plastic nut and an anti-slip ring are matched. During the process of installing and tightening the plastic nut, the plastic nut and the inner hole of the anti-slip ring are matched to embed the anti-slip ring to prevent the plastic nut and the bolt from falling off. At the same time, since the plastic nut is prone to deformation when embedded in the anti-slip ring, the lateral size of the plastic nut is increased, the anti-slip ring and the bolt are pressed tightly, thereby improving the stability of the bolt anti-slip structure in the assembly hole.

[0004] Preferably, a temperature sensitive element and a heat-conducting fluid structure are provided at the bottom of the sensor housing, and the outside of the temperature sensitive element is the heat-conducting fluid structure of the sensor housing. The heat-conducting fluid structure is adopted to enable heat to be quickly transferred from the gearbox to the temperature sensitive element, so that the temperature sensitive element can feed back the temperature signal to the vehicle control unit in the shortest time; the temperature sensitive element is fixed inside the sensor housing, which can prevent the temperature sensitive element from being exposed on the sensor surface and being broken down by static electricity during assembly.

[0005] Preferably, the gear to be tested is located below the heat-conducting fluid structure, and the heat-conducting fluid structure is provided with a temperature-sensitive protrusion, the direction of the temperature-sensitive protrusion is opposite to the rotation direction of the gear to be tested, and a temperature-sensitive element is provided in the temperature-sensitive protrusion. The direction of the temperature-sensitive protrusion is opposite to the rotation direction of the gear to be tested, so that the airflow when the gear to be tested rotates can directly pass through the surface of the temperature-sensitive protrusion, so that the heat can be quickly transferred to the temperature sensing element.

[0006] Preferably, a speed detection unit is provided behind the temperature-sensitive protrusion, and a Hall integrated circuit element is provided inside the speed detection unit. The temperature and gear speed in the gearbox can be monitored by using the temperature-sensitive protrusion and the speed detection unit; the temperature protrusion and the speed detection unit are arranged together, which can reduce the space occupied by the gearbox layout and the layout of the low-voltage wires in the gearbox, thus meeting the requirements of miniaturization and lightness of the gearbox.

[0007] Preferably, the width of the rotation speed detection part is greater than the width of the temperature-sensitive protrusion, and a first heat concentration area and a second heat concentration area are provided on both sides of the temperature-sensitive protrusion, and the area of ​​the first heat concentration area and the area of ​​the second heat concentration area match the rotation direction of the gear to be measured. Due to the different rotation directions of the gears to be measured, the directions of the airflows generated by the gears to be measured during the rotation process are different, and the directions of the heat sources are different. The first heat concentration area and the second heat concentration area are provided on both sides of the temperature-sensitive protrusion, and the areas of the first heat concentration area and the second heat concentration area are different, so that the heat can be quickly transferred to the temperature-sensitive element, so that the temperature-sensitive element can feed back the temperature signal to the vehicle control unit in the shortest time; the above-mentioned setting can make the heat on both sides of the temperature-sensitive element uniform, and improve the accuracy of the measurement results of the temperature-sensitive element.

[0008] Preferably, a shell bracket is provided inside the sensor housing, the shell bracket supports and fixes the temperature-sensitive protrusion and the speed detection part, and the shell bracket wraps the temperature-sensitive element. Furthermore, the shell bracket is made of high-impedance material, and the shell bracket can withstand 20KV electrostatic discharge. The shell bracket is used to support and fix the temperature-sensitive protrusion and the speed detection part, thereby reducing the deformation of the sensor housing under the high-temperature environment inside the gearbox; the shell bracket is used to seal the sensor housing to prevent hydraulic oil and other impurities from entering the sensor housing, polluting the working environment of the temperature-sensitive element and the Hall integrated circuit element, and affecting the detection results of the temperature-sensitive element and the Hall integrated circuit element; the shell bracket is used to isolate the temperature-sensitive element and the Hall integrated circuit element, thereby preventing the heat generated by the Hall integrated circuit element from affecting the temperature-sensitive element, and preventing the current signal generated by the temperature-sensitive element from interfering with the analysis of the pulse signal by the Hall integrated circuit element, thereby preventing the temperature-sensitive element and the Hall integrated circuit element from affecting each other's detection results.

[0009] Preferably, the bottom surface of the speed detection part is the first bottom surface, the bottom surface of the temperature-sensitive protrusion is the second bottom surface, and the first bottom surface and the second bottom surface have an angle α. Furthermore, the angle α is between 6°-16°. The bottom surface of the speed detection part and the bottom surface of the temperature-sensitive protrusion have an angle. The first bottom surface and the second bottom surface have an angle α, which can guide the direction of airflow and quickly transfer heat to the heat concentrators on both sides of the temperature-sensitive protrusion to avoid lags in the detection results of the temperature-sensitive element; the first bottom surface and the second bottom surface have an angle α, and the heat-conducting fluid structure can approach the heating position of the gear to be tested, and obtain the temperature data of the gear in time, while keeping the bottom surface of the speed detection part parallel to the root and top of the gear at a close distance, so that the Hall integrated circuit element can obtain a pulse signal according to the height difference between the top and the root of the tooth, thereby calculating the speed data of the gear.

[0010] Preferably, a first sealing ring is provided between the sensor housing and the housing bracket, and a second sealing ring is provided outside the sensor housing, and the second sealing ring is located above the temperature-sensitive protrusion and the speed detection part. The first sealing ring closes the gap between the housing bracket and the sensor housing to maintain the sealing of the housing bracket inserted into the sensor, and prevents oil or impurities from entering the sensor through the gap between the housing bracket and the sensor housing, thereby damaging the temperature-sensitive element, the Hall integrated circuit element and other internal electrical elements; the second sealing ring; the second sealing ring tightens the sensor housing, squeezes the sensor housing to make it fit more closely with the housing bracket, and prevents oil or impurities from entering the heat-conducting fluid structure, thereby damaging the temperature-sensitive element and the Hall integrated circuit element, and at the same time, avoids affecting the heat transfer effect inside the heat-conducting fluid structure, resulting in a lag in the detection result of the temperature-sensitive element.

[0011] The invention provides a vehicle gearbox speed temperature sensor with a bolt anti-drop structure, which can prevent bolts from falling into the gearbox during the sensor assembly process, causing cleaning difficulties or even the entire gearbox being scrapped; prevents a temperature-sensitive sensor element from being broken down by static electricity and prevents the temperature response hysteresis effect of the temperature-sensitive sensor element from seriously affecting the sealing of the gearbox and causing the gearbox to be scrapped, and has the following beneficial effects: a heat-conducting fluid structure is adopted, so that heat can be quickly transferred from the gearbox to the temperature-sensitive element, so that the temperature-sensitive element feeds back a temperature signal to a vehicle control unit in the shortest time; the temperature-sensitive element is fixed inside the sensor housing, so that the temperature-sensitive element is prevented from being exposed on the sensor surface and being broken down by static electricity during assembly; the temperature protrusion and the speed detection part are arranged together, so that the space occupied by the gearbox can be reduced, and the layout of low-voltage lines in the gearbox can be reduced, so as to meet the requirements of miniaturization and lightweight of the gearbox; the temperature-sensitive element and the Hall integrated circuit element are both encapsulated inside the sensor housing, so that oil or impurities can be prevented from entering the heat-conducting fluid structure, so as to avoid damaging the temperature-sensitive element and the Hall integrated circuit element, and at the same time, the heat transfer effect inside the heat-conducting fluid structure can be avoided, so as to avoid affecting the detection result lag of the temperature-sensitive element. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0013] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a front view of the present invention; Figure 3is a side view of the present invention; Figure 4 A sectional view of the front view of the present invention; Figure 5 It is a schematic diagram of the internal structure of the heat transfer fluid structure of the present invention; Figure 6 It is a side view of the present invention when it is matched with the gear to be tested; Figure 7 It is a front view of the present invention when it is matched with the gear to be tested; Figure 8 It is a schematic structural diagram of the anti-slip ring of the present invention.

[0014] Explanation of the reference numerals: 1 sensor housing; 2 bolt anti-slip structure; 201 bolt; 202 anti-slip ring; 203 annular protrusion; 204 plastic nut; 2023 heat-conducting fluid structure; 301 temperature-sensitive protrusion; 302 speed detection part; 303 second bottom surface; 304 first bottom surface; 305 first heat concentration area; 306 second heat concentration area; 4 temperature-sensitive element; 5 Hall integrated circuit element; 6 housing bracket; 601 partition block; 7 first sealing ring; 8 second sealing ring; 9 gear to be measured. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0016] Embodiment 1 Combination Figure 1 , Figure 2 and Figure 3 As shown, a vehicle transmission speed temperature sensor with a bolt anti-slip structure 2 includes a bolt anti-slip structure 2 and a sensor housing 1. The bolt anti-slip structure 2 includes a bolt 201, a plastic nut 204 and an anti-slip ring 202. The sensor housing 1 is provided with at least two assembly holes to cooperate with the bolt 201 anti-slip structure 2. The surface of the anti-slip ring 202 is provided with a positioning ring groove, the interior of the assembly hole is provided with an annular protrusion 203 that cooperates with the positioning ring groove, and the interior of the anti-slip ring 202 is provided with an assembly ring groove for accommodating the plastic nut 204.

[0017] Through the above arrangement, the anti-slip ring 202 is arranged inside the assembly hole, and the anti-slip ring 202 is fixed in contact with the bolt 201, thereby reducing the processing requirements of the sensor housing 1, and the method of improving the assembly accuracy of the inner surface of the anti-slip ring 202 is adopted to replace the processing of the sensor housing 1, thereby reducing the processing cost; the plastic nut 204 is matched with the anti-slip ring 202, and in the process of installing and tightening the plastic nut 204, the plastic nut 204 cooperates with the inner hole of the anti-slip ring 202 to embed into the anti-slip ring 202, thereby preventing the plastic nut 204 and the bolt 201 from falling off; at the same time, since the plastic nut 204 is easily deformed when embedded in the anti-slip ring 202, the lateral size of the plastic nut 204 is increased, and the anti-slip ring 202 and the bolt 201 are pressed, thereby improving the stability of the anti-slip structure 2 of the bolt 201 in the assembly hole; the plastic nut 204 can correct the The verticality and coaxiality errors of the bolt 201 are within a certain range. If the verticality and coaxiality errors of the bolt 201 are too large, the plastic nut 204 cannot be normally screwed into the anti-slip ring 202 during the screwing process of the plastic nut 204. The assembly problem of the bolt 201 can be discovered in time, and the bolt can be reassembled or replaced to prevent the bolt 201 from damaging the screw hole on the gearbox, causing the gearbox to be defective or completely replaced due to the problem of the screw hole. The provision of the anti-slip ring 202 and the plastic nut 204 can free up an accommodating space for the connection position between the bolt 201 and the gearbox, that is, the anti-slip ring groove. Debris that may appear during the screwing process can be trapped in the space, thereby reducing the probability of debris entering the threaded hole of the gearbox. At the same time, the appearance of this accommodating space is conducive to the storage of lubricating oil here.

[0018] Combination Figure 1 , Figure 2 and Figure 3 As shown, the bottom of the sensor housing 1 is provided with a temperature sensitive element 4 and a heat-conducting fluid structure 3, and the outside of the temperature sensitive element 4 is the heat-conducting fluid structure 3 of the sensor housing 1. The heat-conducting fluid structure 3 is adopted to enable heat to be quickly transferred from the gearbox to the temperature sensitive element 4, so that the temperature sensitive element 4 can feed back the temperature signal to the vehicle control unit in the shortest time; the temperature sensitive element 4 is encapsulated inside the sensor housing 1, which can prevent the temperature sensitive sensor element from being exposed to the sensor surface and avoid being broken down by static electricity during assembly. The plastic housing has high impedance, which can effectively ensure that the element can withstand high anti-static discharge capability and can withstand 16KV static discharge, reducing the assembly scrap rate and reducing the risk of static damage during use.

[0019] Combination Figure 6 and Figure 7As shown, the gear 9 to be tested is located below the heat-conducting fluid structure 3, and the heat-conducting fluid structure 3 is provided with a temperature-sensitive protrusion 301, the direction of the temperature-sensitive protrusion 301 is opposite to the rotation direction of the gear 9 to be tested, and a temperature-sensitive element 4 is provided in the temperature-sensitive protrusion 301. The direction of the temperature-sensitive protrusion 301 is opposite to the rotation direction of the gear 9 to be tested, so that the airflow when the gear 9 to be tested rotates can directly pass through the surface of the temperature-sensitive protrusion 301, so that the heat can be quickly transferred to the temperature sensing element.

[0020] like Figure 3 As shown, a speed detection unit 302 is provided behind the temperature-sensitive protrusion 301, and a Hall integrated circuit element 5 is provided inside the speed detection unit 302. The temperature-sensitive protrusion 301 and the speed detection unit 302 can monitor the temperature in the gearbox and the speed of the gear; the temperature protrusion and the speed detection unit 302 are arranged together, which can reduce the space occupied by the gearbox layout and the layout of the low-voltage wires in the gearbox, meeting the requirements of miniaturization and lightness of the gearbox.

[0021] like Figure 2 As shown, the width of the rotation speed detection part 302 is greater than the width of the temperature-sensitive protrusion 301, and the first heat concentration area 305 and the second heat concentration area 306 are provided on both sides of the temperature-sensitive protrusion 301, and the area of ​​the first heat concentration area 305 and the area of ​​the second heat concentration area 306 match the rotation direction of the gear 9 to be measured. Due to the different rotation directions of the gear 9 to be measured, the airflow directions generated by the gear 9 to be measured during the rotation process are different, and the heat source flows in different directions. The first heat concentration area 305 and the second heat concentration area 306 are provided on both sides of the temperature-sensitive protrusion 301, and the areas of the first heat concentration area 305 and the second heat concentration area 306 are different, so that heat can be quickly transferred to the temperature-sensitive element 4, so that the temperature-sensitive element 4 can feed back the temperature signal to the vehicle control unit in the shortest time; the above-mentioned arrangement can make the heat on both sides of the temperature-sensitive element 4 uniform, and improve the accuracy of the measurement result of the temperature-sensitive element 4.

[0022] like Figure 5As shown, a shell bracket 6 is provided inside the sensor housing 1, and the shell bracket 6 supports and fixes the temperature-sensitive protrusion 301 and the speed detection part 302, and the shell bracket 6 wraps the temperature-sensitive element 4. Furthermore, the shell bracket 6 is a high-impedance material, and the shell bracket 6 can withstand 20KV electrostatic discharge. Further, the shell bracket 6 includes a partition block 601, and the partition block 601 separates the space where the temperature-sensitive element 4 and the Hall integrated circuit element 5 are located. Due to the design of the heat-conducting fluid structure 3, the first heat concentration area 305 and the second heat concentration area 306 of the plastic shell may soften or even deform in a small scale under the high temperature environment of the gearbox. The partition block 601 can enhance the structural strength of the first heat concentration area 305 and the second heat concentration area 306, avoid deformation of the plastic shell, maintain the interval between the temperature-sensitive element 4 and the Hall integrated circuit element 5, and avoid mutual interference of circuit signals. The housing bracket 6 is used to support and fix the temperature-sensitive protrusion 301 and the speed detection part 302, so as to reduce the deformation of the sensor housing 1 under the high temperature environment inside the gearbox; the housing bracket 6 is used to seal the sensor housing 1 to prevent hydraulic oil and other impurities from entering the sensor housing 1 and polluting the working environment of the temperature-sensitive element 4 and the Hall integrated circuit element 5, thereby affecting the detection results of the temperature-sensitive element 4 and the Hall integrated circuit element 5; the housing bracket 6 is used to isolate the temperature-sensitive element 4 and the Hall integrated circuit element 5, so as to prevent the temperature-sensitive element 4 and the Hall integrated circuit element 5 from affecting each other's detection results.

[0023] The bottom surface of the speed detection part 302 is the first bottom surface 304, and the bottom surface of the temperature-sensitive protrusion 301 is the second bottom surface 303. The first bottom surface 304 and the second bottom surface 303 have an angle α. In this embodiment, the angle α is 11°. The bottom surface of the speed detection part 302 and the bottom surface of the temperature-sensitive protrusion 301 have an angle. The first bottom surface 304 and the second bottom surface 303 have an angle α, which can guide the flow direction of the airflow, so that the heat is quickly transferred to the heat concentrators on both sides of the temperature-sensitive protrusion 301, avoiding the lag of the detection result of the temperature sensitive element 4; the first bottom surface 304 and the second bottom surface 303 have an angle α, and the heat-conducting fluid structure 3 can approach the heating position of the gear 9 to be tested, and obtain the temperature data of the gear in time, while keeping the bottom surface of the speed detection part 302 parallel to the root and top of the gear at a close distance, so that the Hall integrated circuit element 5 can obtain a pulse signal according to the height difference between the top and the root, thereby calculating the speed data of the gear.

[0024] A first sealing ring 7 is provided between the sensor housing 1 and the housing support 6, and a second sealing ring 8 is provided outside the sensor housing 1. The second sealing ring 8 is located above the temperature-sensitive protrusion 301 and the speed detection part 302. The first sealing ring 7 closes the gap between the housing support 6 and the sensor housing 1 to maintain the sealing of the housing support 6 inserted into the sensor, and prevents oil or impurities from entering the sensor through the gap between the housing support 6 and the sensor housing 1 to damage the temperature sensitive element 4, the Hall integrated circuit element 5 and other internal electrical components; the second sealing ring 8; the second sealing ring 8 tightens the sensor housing 1, squeezes the sensor housing 1 to make it fit more closely with the housing support 6, and prevents oil or impurities from entering the heat-conducting fluid structure 3, and damages the temperature sensitive element 4 and the Hall integrated circuit element 5. At the same time, it avoids affecting the heat transfer effect inside the heat-conducting fluid structure 3, resulting in a lag in the detection result of the temperature sensitive element 4.

[0025] The present invention provides a vehicle gearbox speed temperature sensor with a bolt 201 anti-drop structure 2, which can prevent the bolt 201 from falling into the gearbox during the sensor assembly process, causing cleaning difficulties or even the entire gearbox being scrapped; prevent the temperature sensitive element from being broken down by static electricity and prevent the temperature response hysteresis effect of the temperature sensitive sensor element from seriously affecting the sealing of the gearbox and causing the gearbox to be scrapped, and has the following beneficial effects: a heat-conducting fluid structure 3 is used to enable heat to be quickly transferred from the gearbox to the temperature sensitive element 4, so that the temperature sensitive element 4 feeds back the temperature signal to the vehicle control unit in the shortest time; the temperature sensitive element 4 is fixed on the sensor The temperature sensitive sensor element is placed inside the sensor housing 1 to avoid being exposed on the sensor surface and being broken down by static electricity during assembly; the temperature protrusion and the speed detection part 302 are arranged together to reduce the space occupied by the gearbox layout and the layout of the low-voltage wires in the gearbox, thereby meeting the requirements of miniaturization and lightweight of the gearbox; the temperature sensitive element 4 and the Hall integrated circuit element 5 are both encapsulated inside the sensor housing 1 to avoid oil or impurities from entering the heat-conducting fluid structure 3, thereby avoiding damage to the temperature sensitive element 4 and the Hall integrated circuit element 5, and at the same time, avoiding affecting the heat transfer effect inside the heat-conducting fluid structure 3, resulting in a lag in the detection result of the temperature sensitive element 4.

[0026] The above embodiments and / or implementation methods are only used to illustrate the preferred embodiments and / or implementation methods for realizing the technology of the present invention, and are not intended to limit the implementation methods of the technology of the present invention in any form. Any technical personnel in this field may make slight changes to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present invention, but they should still be regarded as technologies or embodiments that are essentially the same as the present invention.

Claims

1. A vehicle transmission speed temperature sensor with a built-in bolt anti-slip structure, comprising a bolt anti-slip structure (2) and a sensor housing (1), wherein the bolt anti-slip structure (2) comprises a plastic nut (204) and an anti-slip ring (202), characterized in that: The sensor housing (1) is provided with at least two assembly holes that cooperate with the bolt anti-slip structure (2); a positioning ring groove is provided on the surface of the anti-slip ring (202); an annular protrusion (203) that cooperates with the positioning ring groove is provided inside the assembly hole; and an assembly ring groove that accommodates the plastic nut (204) is provided inside the anti-slip ring (202).

2. The vehicle transmission speed and temperature sensor with a bolt anti-slip structure according to claim 1, characterized in that: A temperature sensitive element (4) and a heat-conducting fluid structure (3) are provided at the bottom of the sensor housing (1); the outside of the temperature sensitive element (4) is the heat-conducting fluid structure (3) of the sensor housing (1).

3. The vehicle transmission speed and temperature sensor with a bolt anti-slip structure according to claim 2, characterized in that: A gear to be measured (9) is provided below the heat-conducting fluid structure (3), the heat-conducting fluid structure (3) is provided with a temperature-sensitive protrusion (301), the orientation of the temperature-sensitive protrusion (301) is opposite to the rotation direction of the gear to be measured (9), and the temperature-sensitive element (4) is provided in the temperature-sensitive protrusion (301).

4. The vehicle transmission speed and temperature sensor with a bolt anti-slip structure according to claim 3, characterized in that: A rotation speed detection unit (302) is provided behind the temperature-sensitive protrusion (301), and a Hall integrated circuit element (5) is provided inside the rotation speed detection unit (302).

5. The vehicle transmission speed and temperature sensor with a bolt anti-slip structure according to claim 4, characterized in that: The width of the rotation speed detection portion (302) is greater than the width of the temperature-sensitive protrusion (301); a first heat concentration area (305) and a second heat concentration area (306) are provided on both sides of the temperature-sensitive protrusion (301); the area of ​​the first heat concentration area (305) and the area of ​​the second heat concentration area (306) match the rotation direction of the gear to be measured (9).

6. The vehicle transmission speed and temperature sensor with a bolt anti-slip structure according to claim 4, characterized in that: A shell bracket (6) is provided inside the sensor housing (1), the shell bracket (6) supports and fixes the temperature-sensitive protrusion (301) and the rotation speed detection part (302), and the shell bracket (6) wraps the temperature-sensitive element (4).

7. The vehicle transmission speed and temperature sensor with a bolt anti-slip structure according to claim 4, characterized in that: The bottom surface of the rotation speed detection portion (302) is a first bottom surface (304), the bottom surface of the temperature-sensitive protrusion (301) is a second bottom surface (303), and the first bottom surface (304) and the second bottom surface (303) have an included angle.

8. The vehicle transmission speed and temperature sensor with a bolt anti-slip structure according to claim 6, characterized in that: A first sealing ring (7) is provided between the sensor housing (1) and the housing bracket (6), and a second sealing ring (8) is provided outside the sensor housing (1), wherein the second sealing ring (8) is located above the temperature-sensitive protrusion (301) and the rotation speed detection portion (302).

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