Crankshaft position sensor

Abstract

The utility model discloses a crankshaft position sensor, and relates to the field of sensors, the crankshaft position sensor comprises a probe and a wire harness plug connector, the probe is provided with a sealing assembly used for improving the installation sealing performance of the probe, and the wire harness plug connector is provided with a fixing assembly used for fixing a wire on the wire harness plug connector. The fixing assembly comprises concentric-square-shaped plates fixedly connected to the upper side and the lower side of the wire harness plug connector, and a fixing plate is fixedly connected to the middle section in the concentric-square-shaped plates. During use, the U-shaped frame is arranged on a wire in a sleeving mode, then the plug board is pressed to enable the spring to contract, and the plug board is moved into the concentric-square-shaped plates; the two sides of the U-shaped frame are located on the two sides of the wire harness plug connector and the two sides of the concentric-square-shaped plate, then the spring rebounds, the plug plate can be inserted into the plug groove, the U-shaped frame is fixed to the wire harness plug connector, a wire plug is fixed, and the problem that in the using process, vibration and other situations possibly occur, and consequently disengagement occurs is avoided as much as possible.

Description

Technical Field

[0001] This application relates to the field of sensors, and in particular, to a crankshaft position sensor. Background Art

[0002] The crankshaft is the main rotating mechanism of the engine. It is responsible for converting the up-and-down reciprocating motion of the piston into its own circular motion, and the engine speed we usually refer to is the speed of the crankshaft. The crankshaft is one of the most important components in the engine. It bears the force transmitted by the connecting rod and converts it into torque, which is output through the crankshaft and drives other accessories on the engine to work. The crankshaft position sensor is one of the most important sensors in the engine electronic control system, used to provide signals for ignition timing, confirm the position of the crankshaft, and detect the top dead center position of the piston, the crankshaft angle, and the engine speed. The crankshaft position sensor provides information by determining the position of the crankshaft, that is, the crankshaft angle. Usually, it works together with the camshaft position sensor to jointly determine the basic ignition timing.

[0003] The utility model patent with the publication number CN208156030U proposes a crankshaft position sensor, which includes a crankshaft position probe and a wire harness connector, and also includes a sealing ring sleeved on the outer wall of the crankshaft position probe.

[0004] For the above-mentioned crankshaft position sensor, the sensor is powered by plugging an external wire into the wire harness connector. However, when the external wire is directly plugged into the wire harness connector, during use, problems such as vibration may occur, resulting in disconnection. Utility Model Content

[0005] In order to achieve the above object, this application provides a crankshaft position sensor.

[0006] The crankshaft position sensor provided by this application adopts the following technical solution:

[0007] A crankshaft position sensor includes a probe and a wire harness connector. A sealing component for improving the installation sealing performance of the probe is provided on the probe, and a fixing component for fixing a wire on the wire harness connector is provided on the wire harness connector. It is characterized in that: the fixing component includes a return plate fixedly connected to the upper and lower sides of the wire harness connector. An inner middle section of the return plate is fixedly connected with a fixing plate. A group of springs are fixedly connected to both side walls of the fixing plate. One end of each spring away from the fixing plate is fixedly connected with an insertion plate. The end of the insertion plate away from the spring extends out of the return plate. A U-shaped frame is provided on one side of the wire harness connector. Slots are opened at the upper and lower ends of both side walls of the U-shaped frame, and the insertion plates are respectively inserted into the slots.

[0008] By adopting the above technical solution, during use, the electrical wire plug is inserted into the wire harness connector, then the U-shaped frame is sleeved on the electrical wire, and then the plug board is pressed to contract the spring and move the plug board into the figure-eight plate, so that both sides of the U-shaped frame are located on both sides of the wire harness connector and the figure-eight plate. After that, the spring rebounds to insert the plug board into the slot, fixing the U-shaped frame on the wire harness connector and fixing the electrical wire plug, thus minimizing the problem of detachment that may occur during use due to vibrations or other situations.

[0009] Preferably, two sliding grooves are provided on the side walls of the two figure-eight plates facing away from each other. A pull rod is slidably arranged in the sliding grooves, and one end of each pull rod is fixedly connected to the plug board respectively.

[0010] By adopting the above technical solution, by pulling the pull rod to move in the sliding groove, the plug board can be moved into the figure-eight plate, facilitating the removal of the U-shaped frame.

[0011] Preferably, accommodation grooves are provided at both ends of the sliding groove. A positioning block is sleeved on the pull rod, and the positioning block is adapted to the accommodation groove.

[0012] By adopting the above technical solution, moving the pull rod to one end of the sliding groove to make the positioning block snap into the accommodation groove can prevent the spring from rebounding and pushing out the plug board, facilitating the installation of the U-shaped frame. At the same time, after moving the pull rod to the other end of the sliding groove and snapping the positioning block into the accommodation groove, it can prevent the plug board from being pushed out of the slot during use due to collisions, resulting in the U-shaped frame falling off.

[0013] Preferably, a first nut is threadedly connected to the pull rod, and the positioning block is located between the first nut and the figure-eight plate.

[0014] By adopting the above technical solution, after the positioning block is snapped into the accommodation groove, by rotating the first nut to make the first nut abut against the positioning block, it can prevent the positioning block from sliding on the pull rod and slipping out of the accommodation groove.

[0015] Preferably, the sealing assembly includes a sealing ring sleeved on the probe. The sealing ring is fixedly connected to the probe. A fixing plate is sleeved on the probe above the sealing ring, and the fixing plate is fixedly connected to the probe. A pressing plate is sleeved on the probe between the fixing plate and the sealing ring, and the pressing plate is slidably connected to the probe. Two ends of the upper surface of the pressing plate are fixedly connected with pressing rods. One end of the pressing rod away from the pressing plate penetrates through the fixing plate, and a second nut is threadedly connected between the pressing plate and the fixing plate.

[0016] By adopting the above technical solution, after the probe is installed on the mounting hole, the sealing ring is close to the mounting hole. By pressing the pressure plate, the pressure plate squeezes the sealing ring to make the sealing ring fit against the side wall around the mounting hole. Then, rotate the second nut to make the second nut abut against the fixed plate, which can prevent the pressure plate from moving, so that the sealing ring seals the installation place and improves the sealing performance of the installation.

[0017] Preferably, a telescopic rod is arranged inside each spring, and two ends of the telescopic rod are respectively fixedly connected to the fixed plate and the plug board.

[0018] By adopting the above technical solution, the stability of the spring can be improved through the telescopic rod.

[0019] Preferably, the sealing ring is made of rubber material.

[0020] By adopting the above technical solution, the sealing ring made of rubber material can be deformed when being squeezed, so that the sealing ring fits more closely against the side wall around the mounting hole and improves the sealing performance.

[0021] Preferably, a limiting disc is fixedly connected to one end of the pull rod away from the sliding groove.

[0022] By adopting the above technical solution, the limiting disc can prevent the first nut and the positioning block from falling off the pull rod, resulting in loss.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. Through the cooperation of structures such as the U-shaped plate, the spring and the plug board in the present application, during use, the electrical wire plug is inserted into the wire harness connector, then the U-shaped frame is sleeved on the electrical wire, and then the plug board is pressed to make the spring contract and move the plug board into the U-shaped plate, so that both sides of the U-shaped frame are located on both sides of the wire harness connector and the U-shaped plate. After that, the spring rebounds and can insert the plug board into the slot to fix the U-shaped frame on the wire harness connector and fix the electrical wire plug, thus minimizing the problem of detachment that may occur due to vibration or other conditions during use.

[0025] 2. After the probe is installed on the mounting hole, the sealing ring is close to the mounting hole. By pressing the pressure plate, the pressure plate squeezes the sealing ring to make the sealing ring fit against the side wall around the mounting hole. Then, rotate the second nut to make the second nut abut against the fixed plate, which can prevent the pressure plate from moving, so that the sealing ring seals the installation place and improves the sealing performance of the installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of a crankshaft position sensor according to an embodiment of the present application;

[0027] Figure 2Schematic diagram mainly showing the explosion structure in the embodiments of the present application;

[0028] Figure 3 Mainly reflected in the embodiments of the present application Figure 1 Schematic diagram of the enlarged structure of area A in

[0029] Figure 4 Schematic diagram mainly showing the internal structure of the return plate in the embodiments of the present application.

[0030] Reference signs: 1, probe; 2, wire harness connector; 3, return plate; 4, fixing plate; 5, spring; 6, insertion plate; 7, U-shaped frame; 8, slot; 9, sliding groove; 10, pull rod; 11, receiving groove; 12, positioning block; 13, first nut; 14, sealing ring; 15, fixing disk; 16, pressing disk; 17, pressing rod; 18, second nut; 19, telescopic rod; 20, limiting disk. Detailed implementation manners

[0031] The following will further elaborate on the present application in conjunction with the attached Figures 1-4 for a more detailed description.

[0032] The embodiments of the present application disclose a crankshaft position sensor.

[0033] Referring to Figures 2-4 , a crankshaft position sensor includes a probe 1 and a wire harness connector 2. The wire harness connector 2 is installed above the probe 1. A wire is inserted into the wire harness connector 2. The probe 1 is provided with a sealing assembly for improving the installation sealing performance of the probe 1. The wire harness connector 2 is provided with a fixing assembly for fixing the wire on the wire harness connector 2. The sealing assembly includes a sealing ring 14, a fixing disk 15, a pressing disk 16, a pressing rod 17 and a second nut 18;

[0034] The fixing assembly includes a return plate 3 fixedly connected to the upper and lower sides of the wire harness connector 2. The middle section inside the return plate 3 is fixedly connected with a fixing plate 4. A set of springs 5 for providing driving force are fixedly connected to both side walls of the fixing plate 4. One end of each set of springs 5 away from the fixing plate 4 is fixedly connected with an insertion plate 6. The end of the insertion plate 6 away from the spring 5 extends out of the return plate 3. A U-shaped frame 7 for fixing the wire on the wire harness connector 2 is provided on one side of the wire harness connector 2. Slots 8 respectively inserted with the insertion plates 6 are opened at the upper and lower ends of both side walls of the U-shaped frame 7. By inserting the insertion plates 6 into the slots 8, the U-shaped frame 7 is fixed at the inserted end of the wire harness connector 2, which can prevent the wire from being pulled out. A wire groove for placing the wire is opened on the U-shaped frame 7.

[0035] Referring to Figure 3 and Figure 4, on the side walls of the two opposite sides of the two figure-eight plates 3, two sliding grooves 9 are provided. A pull rod 10 is slidably arranged in the sliding groove 9. One end of the pull rod 10 is fixedly connected to the insertion plate 6 respectively. By pulling the pull rod 10 to move in the sliding groove 9, the insertion plate 6 can be moved into the figure-eight plate 3, which is convenient for removing the U-shaped frame 7.

[0036] Refer to Figure 3 , receiving grooves 11 are provided at both ends of the sliding groove 9. A positioning block 12 is sleeved on the pull rod 10. The positioning block 12 is adapted to the receiving groove 11. Moving the pull rod 10 to one end of the sliding groove 9 to make the positioning block 12 snap into the receiving groove 11 can prevent the spring 5 from rebounding and pushing out the insertion plate 6, which is convenient for installing the U-shaped frame 7. At the same time, after the pull rod 10 moves to the other end of the sliding groove 9 and the positioning block 12 is snapped into the receiving groove 11, it can prevent the insertion plate 6 from being pushed out of the insertion slot 8 during use due to collision, resulting in the U-shaped frame 7 falling off.

[0037] Refer to Figure 3 , a first nut 13 is threadedly connected to the pull rod 10. The positioning block 12 is located between the first nut 13 and the figure-eight plate 3. After the positioning block 12 is snapped into the receiving groove 11, by rotating the first nut 13 to make the first nut 13 abut against the positioning block 12, it can prevent the positioning block 12 from sliding on the pull rod 10 and slipping out of the receiving groove 11.

[0038] Refer to Figure 2 , a sealing ring 14 is sleeved on the probe 1 and fixedly connected to the probe 1. A fixing plate 15 is sleeved on the probe 1 and is located above the sealing ring 14. The fixing plate 15 is fixedly connected to the probe 1. A pressing plate 16 is sleeved on the probe 1 and is located between the fixing plate 15 and the sealing ring 14 and is slidably connected to the probe 1. Two pressing rods 17 are provided and are respectively fixedly connected to both ends of the upper surface of the pressing plate 16. The end of the pressing rod 17 away from the pressing plate 16 penetrates through the fixing plate 15. A second nut 18 is threadedly connected to the pressing rod 17 and is located between the pressing plate 16 and the fixing plate 15. After the probe 1 is installed into the installation hole, the sealing ring 14 is close to the installation hole. By pressing the pressing plate 16 to make the pressing plate 16 squeeze the sealing ring 14, the sealing ring 14 is fitted to the side wall around the installation hole. Then rotate the second nut 18 to make the second nut 18 abut against the fixing plate 15, which can prevent the pressing plate 16 from moving, so that the sealing ring 14 seals the installation place and improves the sealing performance of the installation.

[0039] Refer to Figure 4 , a telescopic rod 19 is provided inside each spring 5. Both ends of the telescopic rod 19 are fixedly connected to the fixing plate 4 and the insertion plate 6 respectively. The stability of the spring 5 can be improved through the telescopic rod 19.

[0040] Refer to Figure 2 , the sealing ring 14 is made of rubber material. Through the rubber sealing ring 14, when being squeezed, it can deform, so that the sealing ring 14 fits more closely to the side wall around the installation hole and improves the sealing performance.

[0041] Referring to Figure 3 , a limiting disc 20 is fixedly connected to one end of the pull rod 10 away from the sliding groove 9. The first nut 13 and the positioning block 12 can be prevented from falling off the pull rod 10 through the limiting disc 20, resulting in loss.

[0042] The implementation principle of a crankshaft position sensor in an embodiment of the present application is as follows: during use, after the probe 1 is installed on the installation hole, the sealing ring 14 is close to the installation hole. By pressing the pressure plate 16, the pressure plate 16 squeezes the sealing ring 14 to make the sealing ring 14 fit with the side wall around the installation hole. Then, the second nut 18 is rotated to make the second nut 18 abut against the fixed plate 15, which can prevent the pressure plate 16 from moving, so that the sealing ring 14 seals the installation part, improving the sealing performance of the installation. By inserting the wire plug into the wire harness connector 2, then sleeving the U-shaped frame 7 on the wire, and then pressing the insertion plate 6 to contract the spring 5 to move the insertion plate 6 into the return plate 3, so that both sides of the U-shaped frame 7 are located on both sides of the wire harness connector 2 and the return plate 3. After that, the spring 5 rebounds to insert the insertion plate 6 into the slot 8 to fix the U-shaped frame 7 on the wire harness connector 2 and fix the wire plug, minimizing the problem of detachment caused by vibration or other situations during use.

[0043] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A crankshaft position sensor, comprising a probe (1) and a wire harness connector (2). A sealing assembly for improving the mounting sealing performance of the probe (1) is provided on the probe (1), and a fixing assembly for fixing an electric wire on the wire harness connector (2) is provided on the wire harness connector (2), characterized in that: The fixing component includes a U-shaped plate (3) fixedly connected to the upper and lower sides of the wire harness connector (2). In the middle section inside the U-shaped plate (3), a fixing plate (4) is fixedly connected. On both side walls of the fixing plate (4), a set of springs (5) are fixedly connected. One end of each set of springs (5) far from the fixing plate (4) is fixedly connected to an insertion plate (6). The end of the insertion plate (6) far from the spring (5) extends out of the U-shaped plate (3). On one side of the wire harness connector (2), there is a U-shaped frame (7). At the upper and lower ends of both side walls of the U-shaped frame (7), slots (8) are opened. The insertion plates (6) are respectively inserted into the slots (8).

2. The crankshaft position sensor according to claim 1, characterized in that: On the opposite side walls of the two U-shaped plates (3), two sliding grooves (9) are opened. In the sliding grooves (9), pull rods (10) are slidably arranged. One end of each pull rod (10) is fixedly connected to the corresponding insertion plate (6).

3. The crankshaft position sensor according to claim 2, characterized in that: At both ends of the sliding groove (9), accommodation grooves (11) are provided. A positioning block (12) is sleeved on the pull rod (10). The positioning block (12) is adapted to the accommodation groove (11).

4. The crankshaft position sensor according to claim 3, characterized in that: A first nut (13) is threadedly connected to the pull rod (10). The positioning block (12) is located between the first nut (13) and the U-shaped plate (3).

5. A crankshaft position sensor according to claim 4, characterized in that: The sealing component includes a sealing ring (14) sleeved on the probe (1). The sealing ring (14) is fixedly connected to the probe (1). Above the sealing ring (14) on the probe (1), a fixing disk (15) is sleeved. The fixing disk (15) is fixedly connected to the probe (1). Between the fixing disk (15) and the sealing ring (14) on the probe (1), a pressing disk (16) is sleeved. The pressing disk (16) is slidably connected to the probe (1). At both ends of the upper surface of the pressing disk (16), pressing rods (17) are fixedly connected. The end of the pressing rod (17) far from the pressing disk (16) penetrates through the fixing disk (15). A second nut (18) is threadedly connected between the pressing disk (16) and the fixing disk (15) on the pressing rod (17).

6. The crankshaft position sensor according to claim 5, characterized in that: An expansion rod (19) is arranged in each of the springs (5). Both ends of the expansion rod (19) are respectively fixedly connected to the fixing plate (4) and the insertion plate (6).

7. A crankshaft position sensor according to claim 6, characterized in that: The sealing ring (14) is made of rubber material.

8. A crankshaft position sensor according to claim 7, characterized in that: One end of the pull rod (10) far from the sliding groove (9) is fixedly connected to a limit disk (20).

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