Testing device for automobile electronic sensor

Abstract

The utility model provides a testing device for an automobile electronic sensor, which relates to the technical field of testing devices and comprises a bottom plate, the top of the bottom plate is fixedly connected with a sealing box, one side of the sealing box is provided with an air pump, one side of the sealing box is provided with a connecting pipe, and the other side of the sealing box is provided with an air outlet. A pressure release valve is arranged at the end, away from the sealing box, of the connecting pipe, a pressure gauge is arranged at the top of the connecting pipe, a connecting cylinder is arranged at the top of the sealing box, an oxygen sensor is arranged in the connecting cylinder, a limiting device is arranged at the top of the connecting cylinder, and a clamping device is arranged at the top of the limiting device. The limiting device comprises a rubber sleeve, the bottom of the rubber sleeve is fixedly connected with the top of the connecting cylinder, when the limiting device is used, the oxygen sensor slides into the rubber cylinder manually, then the rubber cylinder is extruded on the surface of the oxygen sensor, and therefore oxygen sensors of different models can be well arranged in the connecting cylinder.

Description

Technical Field

[0001] The utility model relates to the technical field of testing devices, in particular to a testing device for automotive electronic sensors. Background Art

[0002] The detection device is a device for detecting the airtightness of an oxygen sensor. When the oxygen sensor is in use, airtightness is an index for the normal operation of the oxygen sensor. When using the testing device, the oxygen sensor is arranged inside the connecting cylinder, and then air is blown into the sealed box through an air pump. By observing the change of the pressure gauge, if the data on the pressure gauge is quite different from the normal data, it indicates that there is a certain problem with the airtightness of the oxygen sensor.

[0003] The inventor found in daily work that the testing device still has at least the following problems: when using the testing device, the oxygen sensor is arranged inside the connecting cylinder, and then air is blown into the sealed box through an air pump. By observing the change of the pressure gauge, if the data on the pressure gauge is quite different from the normal data, it indicates that there is a certain problem with the airtightness of the oxygen sensor. In the actual use process, generally, the oxygen sensor is connected inside the connecting cylinder through a threaded connection. Because the models of the oxygen sensors are different and the threads on their surfaces are inconsistent, different models of oxygen sensors cannot be well detected. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art and propose a testing device for automotive electronic sensors.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: a testing device for automotive electronic sensors, including a bottom plate, a sealed box is fixedly connected to the top of the bottom plate, an air pump is arranged on one side of the sealed box, a connecting pipe is arranged on one side of the sealed box, a pressure relief valve is arranged at the end of the connecting pipe away from the sealed box, a pressure gauge is arranged on the top of the connecting pipe, a connecting cylinder is arranged on the top of the sealed box, an oxygen sensor is arranged inside the connecting cylinder, a limiting device is arranged on the top of the connecting cylinder, a clamping device is arranged on the top of the limiting device, the limiting device includes a rubber sleeve, the bottom of the rubber sleeve is fixedly connected to the top of the connecting cylinder, and a rubber cylinder is fixedly connected to the top of the rubber sleeve, and the rubber cylinder is sleeved on the surface of the oxygen sensor.

[0006] The effect achieved by the above components is: when using the limiting device, manually slide the oxygen sensor into the rubber cylinder, and then the rubber cylinder is pressed against the surface of the oxygen sensor, so that different models of oxygen sensors can be well arranged inside the connecting cylinder.

[0007] Preferably, the top of the sealing box is evenly fixedly connected with a support bar, the top of the support bar is fixedly connected with a U-shaped plate, the inner wall of the U-shaped plate is slidably connected with a sliding bar, one side of the sliding bar is fixedly connected with a semicircular plate, and the semicircular plate is squeezed on the surface of the rubber tube.

[0008] The effect achieved by the above components is: controlling the sliding bar to slide inside the U-shaped plate, thereby causing the semicircular plate to be squeezed on one side of the rubber tube, so that the rubber tube can be closely attached to the surface of the oxygen sensor.

[0009] Preferably, a protrusion is evenly and fixedly connected to one side of the semicircular plate away from the sliding bar, and the protrusion is arranged on the surface of the rubber tube.

[0010] The effect achieved by the above components is that because one side of the semicircular plate is evenly fixedly connected with the protrusion, the semicircular plate can be well squeezed onto one side of the rubber tube.

[0011] Preferably, one side of the connecting tube is evenly fixedly connected to a support frame, a threaded rod is rotatably inserted through one side of the support frame, the threaded rod is threadedly inserted through one side of the semicircular plate, and the thread direction on the surface of the threaded rod is opposite from the middle to both sides.

[0012] The effect achieved by the above components is: the threaded rod is manually controlled to rotate, because the thread direction on the surface of the threaded rod is opposite from the middle to both sides, so that the two semicircular plates can be squeezed on the surface of the rubber tube at the same time.

[0013] Preferably, the locking device includes an L-shaped plate, a fixing groove is provided on the top of the semicircular plate, the inner wall of the fixing groove is slidably connected to the L-shaped plate, one end of the L-shaped plate is fixedly connected to a circular arc plate, the circular arc plate is arranged on one side of the inner wall of the rubber tube, and a fixing hole is provided on one side of the L-shaped plate.

[0014] The effect achieved by the above components is: when using the locking device, manually slide the L-shaped plate into the inside of the fixing groove, set the arc plate on the inner wall of the rubber tube, and manually control the threaded rod to rotate in the opposite direction, so that the two semicircular plates move back to back, so that the rubber tube can be opened by the arc plate, making it easier to set the oxygen sensor inside the rubber tube.

[0015] Preferably, a fixing rod is slidably connected to the inner wall of the fixing hole, a support block is slidably sleeved on the surface of the fixing rod, and the bottom of the support block is fixedly connected to the top of the sliding bar.

[0016] The effect achieved by the above components is that the fixing rod is inserted into the fixing hole after passing through the supporting block, so that the L-shaped plate can be well fixed inside the fixing groove.

[0017] Preferably, a spring is sleeved on the surface of the fixed rod. One end of the spring is fixedly connected to one end of the fixed rod, and one end of the spring close to the fixed rod is fixedly connected to one side of the support block.

[0018] The effect achieved by the above components is that the fixed rod is pulled towards the support block by the spring, and thus the fixed rod is well restricted inside the fixing hole.

[0019] Preferably, rubber strips are uniformly and fixedly connected to one side of the arc plate close to the L-shaped plate, and the rubber strips are arranged on one side of the inner wall of the rubber cylinder.

[0020] The effect achieved by the above components is that when one side of the arc plate is arranged on one side of the inner wall of the rubber cylinder, the rubber strips are pressed against the inner wall of the rubber cylinder, which can increase the friction force to a certain extent and thus prevent the rubber cylinder from sliding on one side of the arc plate.

[0021] In the present utility model, by providing a limiting device, when using the limiting device, the oxygen sensor is manually slid into the rubber cylinder, and thus the rubber cylinder is pressed against the surface of the oxygen sensor, so that oxygen sensors of different models can be well arranged inside the connecting cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic perspective view of a testing device for an automotive electronic sensor proposed by the present utility model;

[0023] Figure 2 is a schematic perspective view of a novel semi-circular plate proposed by the present utility model;

[0024] Figure 3 is Figure 2 an enlarged view at A in

[0025] Figure 4 is a schematic perspective view of a novel arc plate proposed by the present utility model.

[0026] Legend: 1, bottom plate; 2, sealing box; 3, air pump; 4, connecting cylinder; 5, connecting pipe; 6, pressure relief valve; 7, pressure gauge; 8, limiting device; 801, rubber sleeve; 802, rubber cylinder; 803, support bar; 804, sliding bar; 805, U-shaped plate; 806, semi-circular plate; 807, support frame; 808, threaded rod; 809, protrusion; 9, clamping device; 901, fixing groove; 902, L-shaped plate; 903, arc plate; 904, rubber strip; 905, support block; 906, fixed rod; 907, fixing hole; 908, spring; 10, oxygen sensor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] Example 1, as Figures 1-4As shown in the figure, a test device for an automotive electronic sensor. A sealing box 2 is fixedly connected to the top of a bottom plate 1. An air pump 3 is arranged on one side of the sealing box 2. A connecting pipe 5 is arranged on one side of the sealing box 2. One end of the connecting pipe 5 far from the sealing box 2 is provided with a pressure relief valve 6. A pressure gauge 7 is arranged on the top of the connecting pipe 5. A connecting cylinder 4 is arranged on the top of the sealing box 2. An oxygen sensor 10 is arranged inside the connecting cylinder 4. A limiting device 8 is arranged on the top of the connecting cylinder 4. A clamping device 9 is arranged on the top of the limiting device 8. When using the test device, place the oxygen sensor 10 inside the connecting cylinder 4, and then blow air into the sealing box 2 through the air pump 3. By observing the change of the pressure gauge 7, if the data on the pressure gauge 7 has a large difference from the normal data, it indicates that there is a certain problem with the airtightness of the oxygen sensor 10.

[0028] Referring to Figure 2 and Figure 3 , the limiting device 8 includes a rubber sleeve 801. The bottom of the rubber sleeve 801 is fixedly connected to the top of the connecting cylinder 4. A rubber cylinder 802 is fixedly connected to the top of the rubber sleeve 801. The rubber cylinder 802 is sleeved on the surface of the oxygen sensor 10. When using the limiting device 8, manually slide the oxygen sensor 10 into the rubber cylinder 802, and then the rubber cylinder 802 is squeezed on the surface of the oxygen sensor 10. In this way, oxygen sensors 10 of different models can be well arranged inside the connecting cylinder 4. Support bars 803 are uniformly and fixedly connected to the top of the sealing box 2. A U-shaped plate 805 is fixedly connected to the top of the support bars 803. A sliding bar 804 is slidably connected to the inner wall of the U-shaped plate 805. A semi-circular plate 806 is fixedly connected to one side of the sliding bar 804. The semi-circular plate 806 is squeezed on the surface of the rubber cylinder 802. Control the sliding bar 804 to slide inside the U-shaped plate 805, and then the semi-circular plate 806 is squeezed on one side of the rubber cylinder 802. In this way, the rubber cylinder 802 can be closely attached to the surface of the oxygen sensor 10. A plurality of protrusions 809 are uniformly fixedly connected to the side of the semi-circular plate 806 away from the sliding bar 804. The protrusions 809 are arranged on the surface of the rubber cylinder 802. Because a plurality of protrusions 809 are uniformly fixedly connected to one side of the semi-circular plate 806, the semi-circular plate 806 can be well squeezed on one side of the rubber cylinder 802. A support frame 807 is uniformly fixedly connected to one side of the connecting cylinder 4. A threaded rod 808 is rotatably inserted through one side of the support frame 807. The threaded rod 808 is threadedly inserted through one side of the semi-circular plate 806. The thread direction on the surface of the threaded rod 808 is opposite from the middle to both sides. Manually control the threaded rod 808 to rotate. Because the thread direction on the surface of the threaded rod 808 is opposite from the middle to both sides, the two semi-circular plates 806 can be simultaneously squeezed on the surface of the rubber cylinder 802.

[0029] Referring to Figure 4, the clamping device 9 includes an L-shaped plate 902. A fixing groove 901 is formed at the top of the semi-circular plate 806. The inner wall of the fixing groove 901 is slidably connected to the L-shaped plate 902. One end of the L-shaped plate 902 is fixedly connected to an arc plate 903. The arc plate 903 is arranged on one side of the inner wall of the rubber cylinder 802. A fixing hole 907 is formed on one side of the L-shaped plate 902. When using the clamping device 9, manually slide the L-shaped plate 902 into the fixing groove 901, arrange the arc plate 903 on the inner wall of the rubber cylinder 802, and manually control the reverse rotation of the threaded rod 808, so that the two semi-circular plates 806 move away from each other. In this way, the rubber cylinder 802 can be expanded by the arc plate 903, and then it is convenient to arrange the oxygen sensor 10 inside the rubber cylinder 802. A fixing rod 906 is slidably connected to the inner wall of the fixing hole 907. A support block 905 is slidably sleeved on the surface of the fixing rod 906. The bottom of the support block 905 is fixedly connected to the top of the sliding strip 804. After passing the fixing rod 906 through the support block 905 and inserting it into the fixing hole 907, the L-shaped plate 902 can be well fixed inside the fixing groove 901. A spring 908 is sleeved on the surface of the fixing rod 906. One end of the spring 908 is fixedly connected to one end of the fixing rod 906. The end of the spring 908 close to the fixing rod 906 is fixedly connected to one side of the support block 905. By pulling the fixing rod 906 in the direction close to the support block 905 through the spring 908, the fixing rod 906 can be well restricted inside the fixing hole 907. Rubber strips 904 are uniformly and fixedly connected to the side of the arc plate 903 close to the L-shaped plate 902. The rubber strips 904 are arranged on one side of the inner wall of the rubber cylinder 802. When one side of the arc plate 903 is arranged on one side of the inner wall of the rubber cylinder 802, the rubber strips 904 are pressed against the inner wall of the rubber cylinder 802, which can increase the friction to a certain extent and thus prevent the rubber cylinder 802 from sliding on one side of the arc plate 903.

[0030] Working principle: When using the test device, the oxygen sensor 10 is set inside the connecting cylinder 4. Then, air is blown into the sealed box 2 through the air pump 3. By observing the change of the pressure gauge 7, if the data on the pressure gauge 7 is quite different from the normal data, it indicates that there is a certain problem with the airtightness of the oxygen sensor 10. When using the limiting device 8, manually slide the oxygen sensor 10 into the rubber cylinder 802, and manually control the rotation of the threaded rod 808. Since the thread direction on the surface of the threaded rod 808 is opposite from the middle to both sides, the two semi-circular plates 806 can be simultaneously pressed against the surface of the rubber cylinder 802. Because one side of the semi-circular plate 806 is uniformly fixedly connected with protrusions 809, the semi-circular plate 806 can be well pressed against one side of the rubber cylinder 802, and then the rubber cylinder 802 is pressed against the surface of the oxygen sensor 10. In this way, oxygen sensors 10 of different models can be well set inside the connecting cylinder 4. When using the positioning device 9, manually slide the L-shaped plate 902 into the fixing groove 901, pass the fixing rod 906 through the support block 905 and then insert it into the fixing hole 907. Pull the fixing rod 906 towards the support block 905 through the spring 908, and then the fixing rod 906 can be well restricted inside the fixing hole 907. In this way, the L-shaped plate 902 can be well fixed inside the fixing groove 901. Set the arc plate 903 on the inner wall of the rubber cylinder 802, and manually control the threaded rod 808 to rotate in the reverse direction, so that the two semi-circular plates 806 move away from each other. In this way, the rubber cylinder 802 can be expanded by the arc plate 903, which is convenient for subsequently setting the oxygen sensor 10 inside the rubber cylinder 802.

Claims

1. A test device for an automotive electronic sensor, comprising a base plate (1), characterized in that: The top of the bottom plate (1) is fixedly connected to a sealing box (2), one side of the sealing box (2) is provided with an air pump (3), one side of the sealing box (2) is provided with a connecting pipe (5), one end of the connecting pipe (5) away from the sealing box (2) is provided with a pressure relief valve (6), the top of the connecting pipe (5) is provided with a pressure gauge (7), the top of the sealing box (2) is provided with a connecting tube (4), an oxygen sensor (10) is provided inside the connecting tube (4), a limiting device (8) is provided at the top of the connecting tube (4), a locking device (9) is provided at the top of the limiting device (8), the limiting device (8) comprises a rubber sleeve (801), the bottom of the rubber sleeve (801) is fixedly connected to the top of the connecting tube (4), the top of the rubber sleeve (801) is fixedly connected to a rubber sleeve (802), and the rubber sleeve (802) is sleeved on the surface of the oxygen sensor (10).

2. The test device for automotive electronic sensors according to claim 1, characterized in that: The top of the sealing box (2) is evenly and fixedly connected with a support bar (803), the top of the support bar (803) is fixedly connected with a U-shaped plate (805), the inner wall of the U-shaped plate (805) is slidably connected with a sliding bar (804), one side of the sliding bar (804) is fixedly connected with a semicircular plate (806), and the semicircular plate (806) is pressed on the surface of the rubber tube (802).

3. The testing device for automotive electronic sensors according to claim 2, characterized in that: A protrusion (809) is evenly and fixedly connected to one side of the semicircular plate (806) away from the sliding bar (804), and the protrusion (809) is arranged on the surface of the rubber tube (802).

4. The testing device for automotive electronic sensors according to claim 1, characterized in that: One side of the connecting tube (4) is evenly fixedly connected to a support frame (807), one side of the support frame (807) is rotatably penetrated by a threaded rod (808), the threaded rod (808) is threadedly penetrated and inserted into one side of the semicircular plate (806), and the thread direction on the surface of the threaded rod (808) is opposite from the middle to both sides.

5. The testing device for automotive electronic sensors according to claim 3, characterized in that: The locking device (9) comprises an L-shaped plate (902), a fixing groove (901) is provided on the top of the semicircular plate (806), the inner wall of the fixing groove (901) is slidably connected to the L-shaped plate (902), one end of the L-shaped plate (902) is fixedly connected to a circular arc plate (903), the circular arc plate (903) is arranged on one side of the inner wall of the rubber tube (802), and a fixing hole (907) is provided on one side of the L-shaped plate (902).

6. The testing device for automotive electronic sensors according to claim 5, characterized in that: The inner wall of the fixing hole (907) is slidably connected with a fixing rod (906), and the surface of the fixing rod (906) is slidably sleeved with a supporting block (905), and the bottom of the supporting block (905) is fixedly connected to the top of the sliding bar (804).

7. The testing device for automotive electronic sensors according to claim 6, characterized in that: A spring (908) is sleeved on the surface of the fixing rod (906), one end of the spring (908) is fixedly connected to one end of the fixing rod (906), and one end of the spring (908) close to the fixing rod (906) is fixedly connected to one side of the support block (905).

8. The testing device for automotive electronic sensors according to claim 5, characterized in that: A rubber strip (904) is evenly and fixedly connected to one side of the circular arc plate (903) close to the L-shaped plate (902), and the rubber strip (904) is arranged on one side of the inner wall of the rubber tube (802).

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