An impact-resistant water temperature sensor

Abstract

This utility model relates to the field of water temperature sensor technology, and in particular to an impact-resistant water temperature sensor, comprising a prism plate and a threaded rod. The front side of the prism plate is fixedly connected to the rear end face of the threaded rod. A water temperature sensor is fixedly connected to the inner wall of the prism plate. A shielding structure is connected to the rear of the outer wall of the water temperature sensor. A gasket structure is connected to the outer wall of the threaded rod, allowing the detection end of the water temperature sensor to be inserted into the engine connection port. Then, a wrench is engaged on the outer wall of the prism plate and rotated, causing the prism plate and the threaded rod to be gradually screwed into the connection port until the ring and washer are pressed tightly onto the engine. At this time, the protrusion on the outer wall of the washer is pressed tightly onto the engine surface. The protrusion increases the mechanical engagement with the contact surface, forming a tiny engagement point, hindering relative sliding, improving the installation stability of the water temperature sensor, preventing the detection end from loosening due to water flow impact, improving impact resistance, preventing water temperature sensor seal failure, and reducing the frequency of water temperature sensor seal replacement.

Description

Technical Field

[0001] This utility model relates to the field of impact-resistant water temperature sensor technology, specifically an impact-resistant water temperature sensor. Background Technology

[0002] The core function of the water temperature sensor is to detect the engine coolant temperature and provide a feedback signal, giving the electronic control system key parameters to optimize engine operation.

[0003] For example, a shock-resistant water temperature sensor with announcement number "CN217637712U" uses a rubber connecting ring as a seal between the sensor body and the hexagonal nut, providing a buffer space. When the sensor body is impacted, the elastic damper absorbs most of the impact energy, giving the sensor an energy-absorbing structure and improving its shock resistance. However, in use, the air bladder and the air supply line are connected. If the cap seal fails, gas leakage is likely. Furthermore, the air bladder is in direct contact with the connecting surface, and the sensor is connected by threads. Vibration can cause the threads to loosen, leading to friction between the air bladder and the connecting surface, which can easily cause damage over time, resulting in seal failure and increasing the frequency of seal replacement. Utility Model Content

[0004] The purpose of this invention is to solve the problem of water temperature sensor seal failure, which increases the frequency of water temperature sensor seal replacement, and proposes an impact-resistant water temperature sensor.

[0005] To achieve the above objectives, this utility model provides the following technical solution: Design an impact-resistant water temperature sensor, including a prism plate and a threaded rod. The front side of the prism plate is fixedly connected to the rear end face of the threaded rod. The water temperature sensor is fixedly connected to the inner wall of the prism plate. A shielding structure is connected to the rear of the outer wall of the water temperature sensor. A padding structure is connected to the outer wall of the threaded rod.

[0006] This setting: The water temperature sensor senses changes in coolant temperature through a thermistor, converts the physical temperature into an electrical signal, and transmits it to the electronic control unit (ECU) for control and regulation.

[0007] Preferably, the padding structure includes a ring and a washer, the inner wall of the ring is inserted into the outer wall of the threaded rod, the outer wall of the ring is fixedly connected to the inner wall of the washer, and the front side of the washer is fixedly connected with multiple protrusions.

[0008] This feature: The ring is made of fluororubber, which serves as a connection and seal, and it also has good corrosion and oxidation resistance, extending its service life.

[0009] Preferably, the rear end faces of the ring and the washer are in contact with the front face of the prism plate.

[0010] This setting: The washer covers the outer ring of the ring to prevent the ring from being exposed to air for a long time.

[0011] Preferably, the inner wall of the threaded rod is fixedly connected to the front of the outer wall of the water temperature sensor.

[0012] This feature: The threaded rod is a key structure for connecting the sensor and the equipment, enabling mechanical fixing and auxiliary sealing to prevent leakage.

[0013] Preferably, the shielding structure includes a cap and vertical plates. The inner wall of the cap is inserted into the rear of the outer wall of the water temperature sensor. The front ends of the left and right sides of the cap are respectively fixed to the ends of the two vertical plates. A plug is fixed to the rear of the inner wall of the cap.

[0014] This feature: The plug is made of fluororubber, which serves to shield the wiring area behind the temperature sensor, and also has good corrosion and oxidation resistance.

[0015] Preferably, straight plates are fixed to the upper and lower sides of the prism plate respectively.

[0016] This setting allows the straight blade to form a point of force with the hand, and pushing the straight blade can rotate the edge blade, increasing the number of ways to rotate the edge blade.

[0017] The impact-resistant water temperature sensor proposed in this utility model has the following advantages: A ring is fitted onto the outer wall of the threaded rod through a protective structure until the ring and washer are in contact with the front of the prism plate. The water temperature sensor's detection end is then inserted into the engine connection port. A wrench is then used to rotate the outer wall of the prism plate, causing the prism plate and threaded rod to gradually screw into the connection port until the ring and washer are pressed firmly against the engine. At this point, the protrusions on the outer wall of the washer are pressed against the engine surface. These protrusions increase the mechanical engagement with the contact surface, forming tiny locking points that hinder relative sliding. This improves the installation stability of the water temperature sensor, prevents the detection end from loosening due to water flow impact, enhances impact resistance, prevents water temperature sensor seal failure, and reduces the frequency of water temperature sensor seal replacement. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 A schematic diagram showing the connection relationship between the middle ring, washer, and protrusion; Figure 3 for Figure 1 A schematic diagram showing the connection relationship between the middle cap, the vertical plate, and the plug; Figure 4 for Figure 1 A schematic diagram showing the connection between the central prism plate and the straight plate.

[0019] In the diagram: 1. Prism plate, 2. Pad structure, 201. Ring, 202. Washer, 203. Protrusion, 3. Shielding structure, 301. Cap, 302. Vertical plate, 303. Plug, 4. Threaded rod, 5. Water temperature sensor, 6. Straight plate. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings: Please see Figure 1-4 In this embodiment, an impact-resistant water temperature sensor includes a prism plate 1 and a threaded rod 4. The front side of the prism plate 1 is fixedly connected to the rear end face of the threaded rod 4. A water temperature sensor 5 is fixedly connected to the inner wall of the prism plate 1. The water temperature sensor 5 senses the change in coolant temperature through a thermistor, converts the physical temperature into an electrical signal, and transmits it to the electronic control unit (ECU) to achieve control and regulation. A shielding structure 3 is connected to the rear of the outer wall of the water temperature sensor 5, and a padding structure 2 is connected to the outer wall of the threaded rod 4.

[0021] The protective structure 2 includes a ring 201 and a washer 202. The inner wall of the ring 201 is inserted into the outer wall of the threaded rod 4. The ring 201 is made of fluororubber and serves as a connection and seal. The outer wall of the ring 201 is fixed to the inner wall of the washer 202. The washer 202 is made of stainless steel. Multiple protrusions 203 are fixed to the front of the washer 202. The protrusions 203 are made of stainless steel. The rear ends of the ring 201 and the washer 202 are in contact with the front of the prism plate 1. The washer 202 shields the outer ring of the ring 201 to prevent the ring 201 from being exposed to the air for a long time. The ring 201 is fitted onto the outer wall of the threaded rod 4 through the padding structure 2 until the rear of the ring 201 and the washer 202 are in contact with the front of the prism plate 1. Then, the detection end of the water temperature sensor 5 is inserted into the engine connection port. Subsequently, a wrench is locked on the outer wall of the prism plate 1 and rotated, so that the prism plate 1, along with the threaded rod 4, is gradually screwed into the connection port until the ring 201 and the washer 202 are pressed tightly onto the engine. At this time, the protrusion 203 on the outer wall of the washer 202 is pressed tightly onto the engine surface. The protrusion 203 can increase the mechanical engagement with the contact surface, forming a tiny engagement point, which hinders relative sliding, improves the installation stability of the water temperature sensor 5, prevents the detection end from loosening due to water flow impact, improves impact resistance, prevents water temperature sensor seal failure, and reduces the frequency of water temperature sensor seal replacement.

[0022] The inner wall of the threaded rod 4 is fixedly connected to the front of the outer wall of the water temperature sensor 5. The threaded rod 4 is a key structure for connecting the sensor and the equipment, which realizes mechanical fixed installation and auxiliary sealing to prevent leakage. The shielding structure 3 includes a cap 301 and a vertical plate 302. The inner wall of the cap 301 is inserted into the rear of the outer wall of the water temperature sensor 5. The front ends of the left and right sides of the cap 301 are fixedly connected to the ends of the two vertical plates 302 respectively. A plug 303 is fixedly connected to the rear of the inner wall of the cap 301. The plug 303 is made of fluororubber and serves to shield the wiring point at the rear of the temperature sensor 5. At the same time, it has good corrosion resistance and oxidation resistance. Straight plates 6 are fixedly connected to the upper and lower sides of the prism plate 1 respectively. The straight plates 6 can form a force point with the hand. Pushing the straight plates 6 can rotate the prism plate 1, increasing the rotation method of the prism plate 1.

[0023] Working principle: Water temperature sensor installation: Fit the ring 201 onto the outer wall of the threaded rod 4 until the back of the ring 201 and the washer 202 are in contact with the front of the prism plate 1. Then, insert the detection end of the water temperature sensor 5 into the engine connection port. Subsequently, rotate the wrench on the outer wall of the prism plate 1, so that the prism plate 1 (when the outer wall of the prism plate 1 is worn, it can push the straight plate 6, which acts as a force pad and rotates the prism plate 1 through the straight plate 6) and the threaded rod 4 are gradually screwed into the connection port until the ring 201 and the washer 202 are pressed tightly onto the engine. At this time, the protrusion 203 on the outer wall of the washer 202 is pressed tightly onto the engine surface. The protrusion 203 can increase the mechanical engagement with the contact surface, forming a small engagement point, which hinders relative sliding, improves the installation stability of the water temperature sensor 5, prevents the detection end from loosening due to water flow impact, and improves the impact resistance. Then, the hand makes contact with the front of the vertical plate 302, and then pushes the vertical plate 302 backward. At this time, the vertical plate 302 is the point of force. The vertical plate 302 moves backward with the cap 301, so that the cap 301 (the inner wall of the cap 301 is connected to the plug 303, which is made of fluororubber and plays a role in shielding and protecting the wiring of the water temperature sensor 5) gradually detaches from the back of the outer wall of the water temperature sensor 5. At this time, the wiring of the water temperature sensor 5 opens, and then the wiring of the water temperature sensor 5 is connected to the wire.

[0024] At this time, the water temperature sensor 5 is powered on and the electronic control unit provides a stable reference voltage to the sensor. The resistance of the thermistor changes with the coolant temperature, which causes the feedback voltage output by the sensor to change. The ECU calculates the corresponding coolant temperature value by detecting the change in the feedback voltage.

[0025] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A shock resistant water temperature sensor comprising a gable (1) and a threaded rod (4), characterized in that: The front side of the prism plate (1) is fixedly connected to the rear end face of the threaded rod (4). A water temperature sensor (5) is fixedly connected to the inner wall of the prism plate (1). A shielding structure (3) is connected to the rear of the outer wall of the water temperature sensor (5). A padding structure (2) is connected to the outer wall of the threaded rod (4). The padding structure (2) includes a ring (201) and a washer (202). The inner wall of the ring (201) is inserted into the outer wall of the threaded rod (4). The outer wall of the ring (201) is fixedly connected to the inner wall of the washer (202). A plurality of protrusions (203) are fixedly connected to the front side of the washer (202).

2. The impact-resistant water temperature sensor of claim 1, wherein: The rear end faces of the ring (201) and the washer (202) are both in contact with the front face of the prism plate (1).

3. The impact-resistant water temperature sensor according to claim 1, characterized in that: The inner wall of the threaded rod (4) is fixedly connected to the front of the outer wall of the water temperature sensor (5).

4. The impact-resistant water temperature sensor according to claim 1, characterized in that: The shielding structure (3) includes a cap (301) and a vertical plate (302). The inner wall of the cap (301) is inserted into the rear of the outer wall of the water temperature sensor (5). The front ends of the left and right sides of the cap (301) are respectively fixed to the ends of the two vertical plates (302). A plug (303) is fixed to the rear of the inner wall of the cap (301).

5. The impact-resistant water temperature sensor according to claim 1, characterized in that: Straight plates (6) are fixed to the upper and lower sides of the prism plate (1).

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