A device for testing the cold and hot impact of an automobile electronic part

Abstract

This invention relates to the field of automotive electronic component testing technology, specifically disclosing a testing device for thermal shock testing of automotive electronic components, comprising: a wire-end connector and a board-end connector. The wire-end connector includes a first housing and a first conductor. The first conductor is provided on both sides of the first housing. The first housing is connected to a cable, and the cable is connected to the first conductor. The board-end connector includes a second housing, a second conductor, and a pressing member. The second housing has a insertion cavity. Two second conductors are symmetrically distributed on both sides of the insertion cavity. Each second conductor has multiple spaced-apart spring plates. The pressing member includes a sliding seat, a pressure rod, and a first elastic element. The sliding seat is slidably fitted in the second housing and is connected to the second housing through the first elastic element. The pressure rod is rotatably fitted on the sliding seat. The beneficial effect of this invention is to improve the accuracy of the test results of electronic components.

Description

Technical Field

[0001] This invention relates to the field of automotive electronic component testing technology, and more specifically to a testing device for thermal shock testing of automotive electronic components. Background Technology

[0002] Thermal shock testing for automotive electronic components is a critical environmental stress screening test used to verify the reliability of automotive electronic components under extreme temperature fluctuations. Its necessity stems from the harsh realities of automobiles operating in all weather conditions and across diverse regions. In actual operation, electronic components (such as ECUs, sensors, and infotainment systems) experience drastic temperature transitions between the extremely low temperatures of a cold start in frigid winter and the high temperatures of the engine compartment or under intense sunlight. These rapid temperature changes cause mismatches in thermal expansion and contraction within materials, leading to mechanical stress concentration. This can ultimately result in malfunctions such as solder joint cracking, encapsulation resin cracking, material delamination, poor contact, or seal failure. Therefore, thermal shock testing, conducted in a laboratory setting, is crucial for ensuring the reliability of automotive electronic components. Exposing the test component to preset extreme environments of high temperature (e.g., +125°C) and low temperature (e.g., -40°C) at a speed far exceeding that of natural changes (typically completed within seconds or minutes), the core function is to actively stimulate and expose potential defects and early failures caused by differences in the thermal expansion coefficients of different materials. This allows for the assessment of the structural integrity, electrical functional stability, and long-term durability of electronic components. As a mandatory part of automotive electronic component R&D and quality certification, this test can effectively screen out weak links in design or manufacturing processes, significantly improving the reliability, safety, and service life of products throughout the vehicle's lifecycle. It is an indispensable verification method to ensure the stable operation of automotive electronic systems under various climatic conditions.

[0003] Chinese Patent CN117388615B discloses a thermal shock testing device for automotive electronic components, including a test chamber and a conversion plate. The conversion plate is rotatably mounted at the center of the test chamber. A heating chamber and a cooling chamber are respectively located at the top and bottom of the test chamber. Fixed seats are horizontally fixedly mounted on the top and bottom of the conversion plate. Two symmetrically arranged clamping rollers are slidably arranged on the side of each fixed seat away from the conversion plate. Each fixed seat has a moving mechanism for moving the two clamping rollers. A second gear is rotatably mounted at the center of the side of each fixed seat near the conversion plate. A rectangular groove is horizontally opened at the center of one side of the conversion plate, and a rotating rod is horizontally rotatably mounted inside the rectangular groove. A first gear is fixedly sleeved on the surface of the rotating rod. The test chamber contains bevel gears, with two second bevel gears meshing symmetrically on both sides of the first bevel gear. Both second bevel gears are rotatably mounted inside rectangular slots. Fixed rods are vertically fixed to the opposite sides of the two second bevel gears, with the ends of the rods fixed to the centers of the opposing sides of the two second bevel gears. One side of the test chamber has a reciprocating rotation mechanism for rotating the rotating rod. One side of the test chamber is open and hinged with a sealed door. Two symmetrically arranged observation windows are installed on the side of the door. A display screen is installed on one side of the test chamber. This device allows for real-time movement of the device when automotive electronic components are subjected to cold and heat shocks, ensuring uniform heating of the component surfaces and preventing large or inaccurate testing errors.

[0004] However, in the process of verifying the reliability of automotive electronic components, testing needs to be conducted while the electronic components are powered on. Testing without power can only verify the basic structural reliability and cannot reflect the performance conductivity under real working conditions. However, under high-frequency testing, the gold plating on the conductor surface of the wire connectors of the electronic components and the board connectors of the testing equipment is easily worn away due to the frictional force between them during insertion. This leads to inaccurate test results for the electronic components. Summary of the Invention

[0005] This invention provides a thermal shock testing device for automotive electronic components, aiming to solve the problem in related technologies where the gold plating on the conductor surface of wire-end connectors and board-end connectors is easily worn away under high-frequency sliding friction, leading to inaccurate test results for electronic components.

[0006] This invention discloses a thermal shock testing device for automotive electronic components, comprising a testing device and a board-end connector disposed within the testing device. The electronic component is provided with a wire-end connector, which includes a first housing and a first conductor. The first housing has first conductors on both sides, and the first housing is connected to a cable. The cable communicates with the first conductors. The board-end connector is characterized in that it includes a second housing, a second conductor, and a pressing element. The second housing has a insertion cavity, and two second conductors are symmetrically distributed on both sides of the insertion cavity. Each second conductor has multiple spaced-apart spring-loaded plates. The spring-loaded plates are... The spring plate is zigzag-shaped, with its end abutting against the side wall of the second housing. There are two pressing members, each corresponding to one of the second conductors. Each pressing member includes a sliding seat, a pressing rod, and a first elastic element. A sliding groove is provided in the side wall of the second housing, and the sliding seat is slidably fitted in the sliding groove. The pressing rod is located in the insertion cavity and is distributed parallel to and spaced apart from the inner side wall of the second housing. The pressing rod is slidably connected to the sliding seat, and the sliding seat is connected to the second housing through the first elastic element. The pressing rod can squeeze the spring plate and bring it closer to the second housing.

[0007] Beneficial effects: First, the sliding seat is gradually pushed closer to the spring plate. The spring plate can pass through the gap between the pressure rod and the inner wall of the second housing. Continuing to move the sliding seat causes the pressure rod to contact the spring plate. There is a rolling friction fit between the pressure rod and the spring plate. As the sliding seat continues to move, the pressure rod squeezes the spring plate, causing it to deform and gradually approach the side wall of the second housing. The pressure rod rolls along the spring plate as it moves, avoiding sliding friction and thus preventing wear on the coating on the spring plate surface. Then, the first housing is pushed into the insertion cavity. During the process of the first housing entering the insertion cavity, the sliding seat restricts the movement of the spring plate, preventing friction between the pressure rod and the spring plate. The first conductors on both sides of the first housing make contact, thus avoiding sliding friction between them and preventing wear of the plating on the surface of the spring plate and the first conductor. When the first housing is fully inserted into the plug cavity, the first elastic element pushes the sliding seat to reset, thereby disengaging the sliding seat from the spring plate. The spring plate recovers its deformation under its own elasticity and adheres tightly to the corresponding first conductor, thus making it conductive with the first conductor. This reduces wear of the plating on the surface of the spring plate and the first conductor, thereby reducing the probability of poor contact of electronic components due to severe wear of the plating on the board-end connector of the test equipment during high-frequency testing, and thus improving the accuracy of electronic component testing.

[0008] Preferably, the second outer shell is further provided with a dustproof plate. There are two dustproof plates, which are symmetrically distributed at the port of the insertion cavity. Each dustproof plate is rotatably connected to the second outer shell through a first torsion spring. The two dustproof plates abut against each other, thereby sealing the insertion cavity.

[0009] The effect is that the dustproof plate can prevent impurities from entering the connector slot when not connected, thus avoiding impurities from affecting the conductivity between the wire-end connector and the board-end connector.

[0010] Preferably, the dustproof plate is provided with an inclined groove, and the sliding seat is provided with a push plate. When the dustproof plate rotates outward, the push plate can abut against the inclined groove, so that when the dustproof plate rotates outward, it can push the sliding seat to move toward the second conductor.

[0011] Its effect is that the rotation of the dustproof plate pushes the push plate to move, thereby pushing the sliding seat closer to the spring plate, avoiding multiple manual operations and improving the insertion efficiency between the wire end connector and the board end connector.

[0012] Preferably, the second outer shell is further provided with a limiting plate, which is rotatably connected to the second outer shell via a second torsion spring. The limiting plate can abut against the side wall of the dustproof plate. The side wall of the dustproof plate is provided with a limiting groove, and a limiting ball is provided in the limiting groove. The limiting ball is connected to the dustproof plate via a second elastic element. The limiting ball can extend or retract into the limiting groove and abut against the limiting plate, thereby preventing the dustproof plate from rebounding.

[0013] Its effect is that, under normal conditions, the limiting plate and the two dustproof plates abut against each other, which can prevent the dustproof plates from being accidentally opened by external force collisions or other factors. When the first outer shell needs to be inserted into the insertion cavity, the dustproof plate is first manually rotated so that the dustproof plate is perpendicular to the end face of the second outer shell, thereby releasing the rotation restriction on the dustproof plate. Then, the dustproof plate is manually rotated outward. During this process, the side wall of the dustproof plate is always in close contact with the limiting plate. The limiting ball is squeezed by the dustproof plate and thus retracts into the limiting groove. The second elastic element contracts. When the dustproof plate is rotated outward to its limit, the limiting groove is exposed, and the limiting ball extends under the action of the second elastic element and abuts against the side wall of the dustproof plate. At this time, the limiting plate and the dustproof plate can limit each other, thereby preventing the limiting plate and the dustproof plate from springing back.

[0014] Preferably, the inner side of the dustproof plate is also provided with a limiting block, and the first outer shell is provided with a limiting ring. The limiting ring can abut against the limiting block, thereby preventing the first outer shell from detaching from the insertion cavity.

[0015] Its effect is that when the first outer shell is fully inserted into the insertion cavity, the limiting ring abuts against the end face of the second outer shell. Then, the dustproof plate is manually pushed inward to rotate until the outer wall of the limiting ring abuts against the dustproof plate. At this time, the limiting block abuts against the limiting ring, thereby preventing the first outer shell from coming out of the insertion slot.

[0016] Preferably, the second outer shell is further provided with a first positioning block and a second positioning block in the insertion cavity. The size of the first positioning block is larger than the size of the second positioning block. The first positioning block is provided on the top surface of the insertion cavity, and the second positioning block is provided on the bottom surface of the insertion cavity. The top surface of the first outer shell is provided with a first positioning groove, and its bottom surface is provided with a second positioning groove. The first outer shell slides with the first positioning block and the second positioning block through the first positioning groove and the second positioning groove, respectively.

[0017] Its effect is that the first positioning block and the second positioning block can clearly distinguish the top and bottom surfaces of the first shell and the second shell, preventing the first shell from being inserted into the insertion cavity upside down during the insertion process.

[0018] Preferably, the second outer shell is further provided with a fixing block inside the insertion cavity, and the end face of the first outer shell is provided with a fixing groove. The fixing block can extend into the fixing groove, and the side wall of the fixing block can fit against the side wall of the fixing groove.

[0019] Preferably, the second housing is provided with an insert groove, and the second conductor extends into the insertion cavity through the insert groove and is fixed in the insert groove.

[0020] Preferably, the second outer casing is further provided with a heat dissipation vent, and the insertion cavity is connected to the outside through the heat dissipation vent.

[0021] Preferably, the dustproof plate is provided with a handle.

[0022] By adopting the above technical solution, the beneficial effects of the present invention are as follows: During insertion, the sliding seat is first pushed closer to the spring plate. The spring plate can pass through the gap between the pressure rod and the inner wall of the second housing. Continuing to move the sliding seat will bring the pressure rod into contact with the spring plate. The pressure rod and the spring plate are in a rolling friction fit. As the sliding seat continues to move, the pressure rod will squeeze the spring plate, causing the spring plate to deform and gradually approach the side wall of the second housing. As the pressure rod moves along the spring plate, it will roll along the spring plate, avoiding sliding friction and reducing wear on the plating of the spring plate surface. Then, the first housing is pushed into the insertion cavity. During the process of the first housing entering the insertion cavity, the sliding seat restricts the contact between the spring plate and the first conductors on both sides of the first housing, thus avoiding sliding friction and reducing wear on the plating of the spring plate and the first conductor surfaces. This reduces the probability of poor contact of electronic components due to severe wear of the board-end connector plating on the testing equipment during high-frequency testing, thereby improving the accuracy of electronic component testing. Attached Figure Description

[0023] Figure 1This is a schematic diagram of the overall structure of an embodiment of the present invention.

[0024] Figure 2 This is a schematic diagram of the wire-end connector structure according to an embodiment of the present invention.

[0025] Figure 3 This is a front view of the wire-end connector according to an embodiment of the present invention.

[0026] Figure 4 This is a side view of the first conductor according to an embodiment of the present invention.

[0027] Figure 5 This is a schematic diagram of the board-end connector in the open state according to an embodiment of the present invention.

[0028] Figure 6 This is a front view of the board-end connector in the open state according to an embodiment of the present invention.

[0029] Figure 7 This is a cross-sectional view of the board-end connector in the open state according to an embodiment of the present invention.

[0030] Figure 8 This is a schematic diagram of the second conductor structure according to an embodiment of the present invention.

[0031] Figure 9 This is a schematic diagram of the pressing component structure according to an embodiment of the present invention.

[0032] Figure 10 This is a schematic diagram of the dustproof plate structure according to an embodiment of the present invention.

[0033] Figure 11 This is a rear view of the board-end connector in the closed state according to an embodiment of the present invention.

[0034] Figure 12 This is a cross-sectional view of the board-end connector in the closed state according to an embodiment of the present invention.

[0035] Figure 13 This is a cross-sectional view of the wire-end connector of an embodiment of the present invention when it is inserted into the board-end connector.

[0036] Figure label: 100. Testing equipment; 101. First outer shell; 1011. Insertion hole; 1012. First positioning groove; 1013. Second positioning groove; 1014. Fixing groove; 102. First conductor; 103. Limiting ring; 201. Second outer shell; 2011. Connector; 2012. Limiting protrusion; 2013. First positioning block; 2014. Second positioning block; 2015. Fixing block; 202. Second conductor; 2021. First plate; 2022. Second plate; 2023. Spring plate; 203. Pressing element; 2031. Sliding seat; 2032. Pressure rod; 2033. First elastic element; 2034. Push plate; 204. Dustproof plate; 205. Limiting plate; 206. Handle; 2071. Limiting ball; 2072. Second elastic element; 208. Limiting block; 209. Third conductor. Detailed Implementation

[0037] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0038] like Figures 1 to 13 As shown, the present invention provides a thermal shock testing device for automotive electronic components, including a testing device 100 and a board-end connector disposed on the testing device 100. A line segment connector is disposed on the electronic component, and the line segment connector is fixedly connected to a cable on the electronic component. The line-end connector and the board-end connector can be electrically connected and fixed to each other, thereby realizing the conduction between the testing device 100 and the electronic component.

[0039] Specifically, such as Figure 2 As shown, the wire connector includes a first housing 101 and a first conductor 102. The first housing 101 is a rectangular structure and is made of insulating plastic. The first housing 101 is provided with a plurality of spaced circular sockets 1011. Each socket 1011 corresponds to a data wire in the cable. The socket 1011 can be soldered to the corresponding data wire in the cable.

[0040] like Figures 2 to 4As shown, the first outer casing 101 has receiving cavities on both sides, and each receiving cavity contains a first conductor 102. The first conductor 102 is a square plate structure with a first fastening structure on its side wall and a corresponding second fastening structure on the side wall of the receiving cavity. When the front end of the first conductor 102 gradually extends into the receiving cavity and the first fastening structure passes the second fastening structure, the second fastening structure and the first fastening mechanism abut against each other, thereby fixing the first conductor 102 and preventing it from detaching from the receiving cavity. The side wall of the first outer casing 101 also has a conductive window that communicates with the receiving cavity, thereby exposing the first conductor 102 inside the receiving cavity. The rear end of the first conductor 102 can be soldered to the power conductor in the cable.

[0041] like Figures 5 to 8As shown, the board-end connector includes a second housing 201, a second conductor 202, and a pressing member 203. The second housing 201 has a rectangular structure and is made of insulating plastic. The size of the second housing 201 is larger than that of the first housing 101. The rear end of the second housing 201 is provided with a plug cavity, and multiple connectors 2011 are provided in the plug cavity. Each connector 2011 corresponds to a socket 1011. The front end of the second housing 201 is provided with multiple third conductors 209. Each third conductor 209 corresponds to a connector 2011, and each third conductor 209 is connected to a connector 2011. The connector 2011 can be connected to the printed circuit on the circuit board through the third conductors 209. The first housing 101 can extend into the plug cavity, and each connector 2011 can be inserted into the corresponding socket 1011. The second conductor 202 has an L-shaped structure, comprising a first plate 2021 and a second plate 2022, which are perpendicularly distributed and have an arc-shaped chamfer between them. The end of the second plate 2022 away from the first plate 2021 has an arc-shaped groove for contacting the printed circuit on the circuit board, thus establishing electrical conductivity. The end of the first plate 2021 away from the second plate 2022 has multiple spring-loaded plates 2023, evenly spaced along the length of the first plate 2021. One end of each spring-loaded plate 2023 is conductive to the first plate 2021. The spring-loaded plates 2023 have a zigzag structure and good elasticity. The front end of the second outer shell 201 has an insert groove, with two insert grooves symmetrically distributed within the second outer shell 201. On both sides, each mounting slot is flush with the corresponding side wall of the second housing 201. The mounting slot is connected to the insertion cavity. The spring plate 2023 and the first plate 2021 in the second conductor 202 can extend into the insertion cavity through the mounting slot. The first plate 2021 is flush with the side wall of the second housing 201. Since the spring plate 2023 is zigzag-shaped and the mounting slot is flush with the side wall of the second housing 201, the side wall of the second housing 201 can squeeze the spring plate 2023, so that there is an angle between the spring plate 2023 and the first plate 2021. The end of the spring plate 2023 abuts against the side wall of the second housing 201. Under its own elasticity, the spring plate 2023 applies outward pressure to the side wall of the second housing 201. The reaction force of the side wall of the second housing 201 on the spring plate 2023 and the mounting slot work together to fix the position of the second conductor 202. Two second conductors 202 are symmetrically distributed on both sides of the insertion cavity. When the first outer shell 101 is not inserted into the insertion cavity, the distance between the two spring plates 2023 is less than the width of the first outer shell 101.

[0042] like Figures 5 to 9 , Figure 12As shown, two pressing members 203 are respectively disposed on both sides of the insertion cavity. Each pressing member 203 includes a sliding seat 2031, a pressing rod 2032, and a first elastic member 2033. Both the sliding seat 2031 and the pressing rod 2032 are made of insulating material. The sliding seat 2031 has a U-shaped structure. A sliding groove extending in the front-to-back direction is provided on the side wall of the second outer shell 201. The sliding seat 2031 is slidably fitted within the sliding groove. Openings extending in the front-to-back direction are provided at both the top and bottom of the sliding groove. The upper and lower ends of 1 can extend into the insertion cavity through corresponding openings. The pressure rod 2032 is located in the insertion cavity and is distributed parallel to the inner side wall of the second outer shell 201. The two ends of the pressure rod 2032 are rotatably connected to the sliding seat 2031. The sliding seat 2031 is elastically connected to the second outer shell 201 through the first elastic element 2033. The first elastic element 2033 is a spring. One end of the first elastic element 2033 is fixedly connected to the sliding seat 2031, and the other end is fixedly connected to the second outer shell 201. As the sliding seat 2031 moves forward along the side wall of the second housing 201, the sliding seat 2031 gradually approaches the spring pressure plate 2023. The spring pressure plate 2023 can extend into the gap between the pressure rod 2032 and the inner side wall of the second housing 201 until the pressure rod 2032 and the spring pressure plate 2023 come into contact. This pressure rod 2032 can squeeze the spring pressure plate 2023, causing the spring pressure plate 2023 to gradually approach the inner side wall of the second housing 201, thereby increasing the angle between the spring pressure plate 2023 and the first plate 2021.

[0043] like Figures 5 to 7 , Figures 10 to 12As shown, the second outer shell 201 is also provided with two symmetrically distributed dustproof plates 204. Both dustproof plates 204 are located at the port of the insertion cavity and are rotatably connected to the second outer shell 201 through a first rotating shaft. The dustproof plates 204 can rotate relative to the second outer shell 201 around the first rotating shaft. A first torsion spring is provided between the first rotating shaft and the second outer shell 201. One end of the first torsion spring is fixedly connected to the first rotating shaft, and the other end is fixedly connected to the second outer shell 201. When the first torsion spring is in its natural state, the two dustproof plates 204 can abut against each other and close the insertion cavity, thereby preventing impurities from entering the insertion cavity. When the dustproof plates 204 rotate outward relative to the second outer shell 201 around the first rotating shaft, the first torsion spring is compressed, thereby storing force. The dustproof plate 204 has a sloping groove, the depth of which is greater at the end near the first rotating shaft than at the end away from the first rotating shaft. The sliding seat 2031 has a push plate 2034. The rear end of the second housing 201 has a clearance groove that communicates with the insertion slot. The push plate 2034 can extend rearward from the second housing 201 through the clearance groove and abut against the sloping groove of the dustproof plate 204. As the dustproof plate 204 moves outward around the first rotating shaft to open the insertion cavity, the dustproof plate 204 gradually approaches the push plate 2034. The dustproof plate 204 continues to rotate until the push plate 2034 abuts against the inclined groove. At this point, the dustproof plate 204 continues to rotate, causing the push plate 2034 to move along the inclined groove. The dustproof plate 204 gradually pushes the push plate 2034 into the insertion cavity, thereby pushing the sliding seat 2031 to overcome the elastic force of the first elastic element 2033 and gradually approach the pressure plate 2023. The first elastic element 2033 is contracted, and the rotation of the dustproof plate 204 pushes the push plate 2034 into the insertion cavity, thus driving the sliding seat 2031 forward and closer to the pressure plate 2023. The dustproof plate 204 is equipped with a handle 206, making it convenient for workers to pull the dustproof plate 204 and manually rotate it.

[0044] like Figure 5 and Figure 11As shown, the second housing 201 is also provided with a limiting plate 205. The two limiting plates 205 are symmetrically distributed vertically at the insertion cavity port of the second housing 201. The rear end of the second housing 201 has two parallel outer edges distributed vertically and horizontally. Each limiting plate 205 is rotatably engaged with the corresponding outer edge through a second rotating shaft. A second torsion spring is provided between the second rotating shaft and the corresponding outer edge. One end of the second torsion spring is fixedly connected to the second rotating shaft, and the other end is fixedly connected to the outer edge on the second housing 201. When the two dustproof plates 204 abut against each other and close the insertion cavity, the limiting plate 205 abuts against the two dustproof plates 204 respectively, thereby limiting the dustproof plates 204 and preventing them from moving outward. At this time, the second torsion spring is in its natural state. When it is necessary to open the insertion cavity, first manually rotate the two limiting plates 205 so that the limiting plates 205 and the rear end face of the second outer shell 201 are perpendicular to each other. The second torsion spring stores force, and then manually rotate the two dustproof plates 204. During the rotation of the dustproof plates 204, their side walls abut against the limiting plates 205, thereby limiting the limiting plates 205 and preventing them from rebounding.

[0045] like Figure 5 , Figure 10 and Figure 11 As shown, a limiting protrusion 2012 is provided on the side wall of the second outer shell 201. The end face of the limiting protrusion 2012 is a beveled structure. During the process of the dustproof plate 204 rotating outward around the first rotating axis and opening the insertion cavity, it can abut against the beveled end of the limiting protrusion 2012. The limiting protrusion 2012 is used to limit the rotation range of the dustproof plate 204. A limiting groove is also provided on the side wall of the dustproof plate 204. The limiting groove is a cylindrical groove. A limiting ball 2071 is provided in the limiting groove. The limiting ball 2071 is cylindrical and its top is a spherical structure. The limiting ball 2071 is elastically connected to the limiting groove through a second elastic element 2072. The second elastic element 2072 is a spring. One end of the spring is fixedly connected to the bottom end of the limiting ball 2071, and the other end is fixedly connected to the bottom of the limiting groove. The limiting ball 2071 can retract or extend out of the limiting groove. Under normal conditions, the limiting plate 205 abuts against the side wall of the dustproof plate 204, covering the limiting groove. At this time, the limiting ball 2071 is located in the limiting groove, and its top end abuts against the limiting plate 205. The second elastic element 2072 is in a compressed state. The limiting plate 205 prevents the limiting ball 2071 from extending out of the limiting groove. When the dustproof plate 204 rotates outward to abut against the limiting protrusion 2012, the limiting groove is exposed. Under the stretching elastic force of the second elastic element 2072, the limiting ball 2071 can extend out of the limiting groove. The spherical structure at its top end abuts against the limiting plate 205, thereby preventing the dustproof plate 204 from rebounding. Through the combined action of the limiting protrusion 2012 and the limiting ball 2071, the dustproof plate 204 can be fixed.

[0046] like Figure 5 , Figure 7 , Figure 10 and Figure 13 As shown, the dustproof plate 204 is also provided with a limiting block 208, and the first outer shell 101 is provided with a limiting ring 103. The limiting ring 103 is fixedly set on the periphery of the first outer shell 101. When the first outer shell 101 is fully inserted into the insertion cavity, the front end of the limiting ring 103 abuts against the rear end face of the second outer shell 201. At this time, the dustproof plate 204 is rotated inward, so that the dustproof plate 204 and the rear end face of the second outer shell 201 are perpendicularly distributed. At this time, the limiting block 208 abuts against the rear end of the limiting ring 103, thereby preventing the first outer shell 101 from moving backward and avoiding the first outer shell 101 from detaching from the insertion cavity.

[0047] like Figure 3 and Figure 5 As shown, the insertion cavity is also provided with a first positioning block 2013 and a second positioning block 2014. The first positioning block 2013 is located at the top surface of the insertion groove, and the second positioning block 2014 is located at the bottom surface of the insertion groove. The size of the first positioning block 2013 is larger than the size of the second positioning block 2014. The top surface of the first outer shell 101 is provided with a first positioning groove 1012 of the same size as the first positioning block 2013, and the bottom surface of the first outer shell 101 is provided with a second positioning groove 1013 of the same size as the second positioning block 2014. During the insertion into the insertion cavity, the first positioning groove 1012 is aligned with the first positioning block 2013, and the first positioning block 2013 can slide within the first positioning groove 1012. The second positioning groove 1013 is aligned with the second positioning block 2014, and the second positioning block 2014 can slide within the second positioning groove 1013. Setting the first positioning block 2013 and the second positioning block 2014 makes it easier for the staff to identify the orientation of the first outer shell 101 and the second outer shell 201, thereby preventing the first outer shell 101 from being inserted into the insertion cavity upside down.

[0048] like Figure 3 and Figure 5 As shown, a fixing block 2015 is also provided in the insertion cavity. The two fixing blocks 2015 are distributed in parallel and spaced apart. The front end of the first housing 101 is provided with two fixing grooves 1014. The two fixing grooves 1014 correspond to the two fixing blocks 2015 respectively. The size of the fixing groove 1014 is the same as the size of the fixing block 2015. By inserting the fixing block 2015 into the corresponding fixing groove 1014, the side wall of the fixing block 2015 fits against the side wall of the fixing groove 1014, thereby preventing the first housing 101 from moving in the insertion cavity, thus ensuring the connection stability of the wire end connector and the board end connector.

[0049] The implementation principle of the automotive electronic component thermal shock testing device according to an embodiment of the present invention is as follows: The second housing 201 is fixedly mounted on the circuit board of the test equipment 100. The second conductor 202 is connected to the power circuit on the circuit board through the second plate 2022, and the third conductor 209 is connected to the data circuit on the circuit board.

[0050] During testing, first connect the wire connector on the electronic component to the board connector on the testing equipment 100. During connection, manually move the limiting plates 205 so that they are perpendicular to the rear end of the second housing 201. The second torsion spring stores force, releasing the limiting plates 205 from the dustproof plate 204. Pull the dustproof plate 204 using the handle 206, causing both dustproof plates 204 to rotate outwards around their respective first rotation axes. The first torsion spring stores force, opening the insertion cavity. During rotation, the inclined groove on the dustproof plate 204 gradually approaches the push plate 2034 and abuts against its rear end. Continued rotation of the dustproof plate 204 causes the push plate 2034 to move along the inclined groove, pushing it forward. The push plate 2034 gradually retracts into the insertion cavity. The sliding seat 2031 moves synchronously with the push plate 2034. The sliding seat 2031 moves forward and gradually approaches the spring pressure plate 2023. When the sliding seat 2031 contacts the rear end of the spring pressure plate 2023, the rear end of the spring pressure plate 2023 can pass through the gap between the pressure rod 2032 and the second outer shell 201. The sliding seat 2031 continues to move forward until the pressure rod 2032 contacts the spring pressure plate 2023. The pressure rod 2032 and the spring pressure plate 2023 roll and rub against each other. Then the sliding seat 2031 continues to move forward, and the pressure rod 2032 rolls forward along the spring pressure plate 2023 and squeezes the spring pressure plate 2023 while rolling, so that the spring pressure plate 2023 is deformed under pressure and gradually approaches the side wall of the second outer shell 201. The dustproof plate 204 rotates outward until it abuts against the limiting protrusion 2012. At this time, the limiting ball 2071 extends outward under the stretching force of the second elastic element 2072 and abuts against the side wall of the limiting plate 205. The limiting protrusion 2012 prevents the dustproof plate 204 from rotating outward, and the limiting plate 205 prevents the dustproof plate 204 from rotating inward through the limiting ball 2071, thereby fixing the dustproof plate 204. At the same time, the side wall of the dustproof plate 204 abuts against the limiting plate 205. Under the elastic force of the second torsion spring, the dustproof plate 204 always remains tightly against the side wall of the dustproof plate 205. The dustproof plate 204 can prevent the limiting plate 205 from rebounding, thus preventing the limiting plate 205 from obstructing the insertion of the first outer shell 101 into the insertion cavity.

[0051] Align the first positioning groove 1012 on the top surface of the first housing 101 with the first positioning block 2013, align the second positioning groove 1013 on the bottom surface of the first housing 101 with the second positioning block 2014, and align the two fixing grooves 1014 with the corresponding fixing blocks 2015. Then, manually push the first housing 101 into the insertion cavity. During the insertion of the first housing 101 into the insertion cavity, the pressure rod 2032 constantly presses against the spring pressure plate 2023, thereby preventing the spring pressure plate 2023 from contacting the first positioning blocks 2015 on both sides of the first housing 101. Conductors 102 make contact, thus avoiding sliding friction between them. When the first housing 101 is fully inserted into the insertion cavity, each connector 2011 extends into the corresponding socket 1011 and makes contact with and conducts with the data wires inside the socket 1011. The data wires in the cable can conduct through the connectors to the third conductor 209, and through the third conductor 209 to the printed circuit on the circuit board. At this time, the limiting ring 103 abuts against the rear end face of the second housing 201, and the dustproof plate 204 is manually pushed around. The first rotating shaft moves inward, and the limiting ball 2071, under the action of external force, overcomes the elastic force of the second elastic element 2072 and retracts into the limiting groove, thereby releasing the limiting plate 205 from limiting the dustproof plate 204, until the outer wall of the limiting ring 103 of the dustproof plate 204 stops. At this time, the limiting block 208 is located on the rear side of the limiting ring 103 and stops with the rear end of the limiting ring 103. The limiting block 208 can prevent the first outer shell 101 from moving backward and prevent the first outer shell 101 from disengaging from the insertion cavity. At the same time, the first elastic element 2033... The spring force is released, and the sliding seat 2031 is pushed forward, so that the sliding seat 2031 is disengaged from the pressure plate 2023. The pressure plate 2023 is reset under its own elasticity and comes into contact with the first conductors 102 on both sides of the first housing 101, and is always in close contact with the first conductors 102, thereby realizing the conduction between the first conductor 102 and the second conductor 202. The power wire of the cable can be connected to the printed circuit on the circuit board through the mutual conduction between the first conductor 102 and the second conductor 202.

[0052] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A thermal shock testing device for automotive electronic components, comprising a testing device and a board-end connector disposed within the testing device, wherein the electronic component is provided with a wire-end connector, the wire-end connector comprising a first housing and a first conductor, the first housing having first conductors on both sides, the first housing being connected to a cable, and the cable communicating with the first conductors, characterized in that, The board-end connector includes a second housing, a second conductor, and pressing members. The second housing has a insertion cavity, and two second conductors are symmetrically distributed on both sides of the insertion cavity. Each second conductor has multiple spaced-apart spring plates, which are zigzag-shaped. The ends of the spring plates abut against the side wall of the second housing. There are two pressing members, each corresponding to one of the second conductors. Each pressing member includes a sliding seat, a pressure rod, and a first elastic element. The side wall of the second housing has a sliding groove, and the sliding seat is slidably fitted in the sliding groove. The pressure rod is located in the insertion cavity and is spaced parallel to the inner side wall of the second housing. The pressure rod is slidably connected to the sliding seat, and the sliding seat is connected to the second housing through the first elastic element. The pressure rod can squeeze the spring plates and bring them closer to the second housing.

2. The testing device for thermal shock testing of automotive electronic components according to claim 1, characterized in that, The second outer shell is also provided with a dustproof plate. There are two dustproof plates, which are symmetrically distributed at the port of the insertion cavity. Each dustproof plate is rotatably connected to the second outer shell through a first torsion spring. The two dustproof plates abut against each other, thereby sealing the insertion cavity.

3. The testing device for thermal shock testing of automotive electronic components according to claim 2, characterized in that, The dustproof plate is provided with an inclined groove, and the sliding seat is provided with a push plate. When the dustproof plate rotates outward, the push plate can abut against the inclined groove, so that when the dustproof plate rotates outward, it can push the sliding seat to move toward the second conductor.

4. The testing device for thermal shock testing of automotive electronic components according to claim 3, characterized in that, The second outer shell is also provided with a limiting plate, which is rotatably connected to the second outer shell through a second torsion spring. The limiting plate can abut against the side wall of the dustproof plate. The side wall of the dustproof plate is provided with a limiting groove, and a limiting ball is provided in the limiting groove. The limiting ball is connected to the dustproof plate through a second elastic element. The limiting ball can extend or retract into the limiting groove. The limiting ball can abut against the limiting plate, thereby preventing the dustproof plate from rebounding.

5. The testing device for thermal shock testing of automotive electronic components according to claim 4, characterized in that, The inner side of the dustproof plate is also provided with a limiting block, and the first outer shell is provided with a limiting ring. The limiting ring can abut against the limiting block, thereby preventing the first outer shell from detaching from the insertion cavity.

6. The testing device for thermal shock testing of automotive electronic components according to claim 1, characterized in that, The second outer shell is further provided with a first positioning block and a second positioning block in the insertion cavity. The size of the first positioning block is larger than the size of the second positioning block. The first positioning block is provided on the top surface of the insertion cavity, and the second positioning block is provided on the bottom surface of the insertion cavity. The top surface of the first outer shell is provided with a first positioning groove, and its bottom surface is provided with a second positioning groove. The first outer shell slides with the first positioning block and the second positioning block through the first positioning groove and the second positioning groove, respectively.

7. The testing device for thermal shock testing of automotive electronic components according to claim 1, characterized in that, The second outer shell is further provided with a fixing block inside the insertion cavity, and the end face of the first outer shell is provided with a fixing groove. The fixing block can extend into the fixing groove, and the side wall of the fixing block can fit against the side wall of the fixing groove.

8. The testing device for thermal shock testing of automotive electronic components according to claim 1, characterized in that, The second housing is provided with an insert groove, and the second conductor extends into the insertion cavity through the insert groove and is fixed in the insert groove.

9. The testing device for thermal shock testing of automotive electronic components according to claim 1, characterized in that, The second outer casing is also provided with a heat dissipation vent, through which the insertion cavity communicates with the outside world.

10. The testing device for thermal shock testing of automotive electronic components according to claim 2, characterized in that, The dustproof panel is equipped with a handle.

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