A chip position adjustable Hall crankshaft position sensor

Abstract

This utility model relates to a Hall effect crankshaft position sensor with adjustable chip position, belonging to the technical field of Hall effect crankshaft position sensors. It includes a sensor body, a fixing ring, and a locking assembly. One end of the sensor body is a sensing end, and the other end is an interface. A guide groove is formed on the sensor body, and a fixing hole and a guide hole that mates with the guide groove are formed on the fixing ring. The sensor body passes through the guide hole and is slidably connected to the fixing ring. The locking assembly is disposed on the fixing ring and is used to lock the fixing ring onto the sensor body. This utility model allows adjustment of the position of the mounting ring relative to the sensor body during sensor installation, ensuring that the Hall effect chip inside the sensing end maintains a suitable distance from the signal wheel after installation, thus allowing the sensor to adapt to mounting holes of different lengths.

Description

Technical Field

[0001] This application relates to the field of Hall effect crankshaft position sensor technology, and more particularly to a chip-position adjustable Hall effect crankshaft position sensor. Background Technology

[0002] A Hall effect crankshaft position sensor is a sensor that works based on the Hall effect principle. It is used to detect the position and speed of the engine crankshaft and is one of the core components of modern automotive engine management systems. Its sensing end is equipped with a permanent magnet, a Hall chip, and a signal processing circuit. During installation, the Hall effect crankshaft position sensor is generally inserted into the engine housing, with its sensing end close to the signal wheel. However, in actual assembly, engines are mass-produced. Because the length of the hole used to install the Hall effect crankshaft position sensor often exceeds the dimensional tolerance, especially when the hole is too long, the Hall chip at the end of the crankshaft position sensor cannot extend out of the mounting hole or the extension distance is too short. The distance between the Hall chip and the signal wheel is too long, affecting the magnetic field strength of the Hall chip and causing inaccurate sensing of the signal wheel. This requires rework of the corresponding mounting hole on the engine, resulting in a waste of manpower and resources. Utility Model Content

[0003] This application provides a Hall effect crankshaft position sensor with adjustable chip position, which can adjust the position of the Hall chip at the sensor's sensing end, thereby adapting the sensor to mounting holes of different lengths.

[0004] This application provides a chip position adjustable Hall crankshaft position sensor, including a sensor body, a fixing ring, and a locking assembly. One end of the sensor body is a sensing end, and the other end is an interface. A guide groove is formed on the sensor body, and a fixing hole and a guide hole that cooperates with the guide groove are formed on the fixing ring. The sensor body passes through the guide hole and is slidably connected to the fixing ring. The locking assembly is disposed on the fixing ring and is used to lock the fixing ring on the sensor body.

[0005] The technical solutions described above in this application embodiment have at least the following technical effects: when installing the sensor, the position of the mounting ring relative to the sensor body can be adjusted so that the Hall chip inside the sensing end is kept at a suitable distance from the signal wheel after installation, thereby allowing the sensor to adapt to mounting holes of different lengths.

[0006] In some embodiments, two sets of locking components are symmetrically arranged. Each locking component includes a piercing screw and a support post. One end of the support post is fixedly connected to the side of the fixing ring. The tip of the piercing screw passes through the support post and the fixing ring. The piercing screw is threadedly connected to the support post.

[0007] In some embodiments, a packing groove is formed on the outer peripheral surface of the sensor body, and the packing groove is filled with puncture packing.

[0008] In some embodiments, the tip of the puncture screw is threaded with a protective end, the side of which away from the puncture screw abuts against the puncture filler.

[0009] In some embodiments, a threaded sleeve is provided at the end of the support column away from the fixing ring, and the piercing screw passes through the inside of the threaded sleeve and is threadedly connected to the threaded sleeve.

[0010] In some embodiments, the sensor body has scale lines on its outer peripheral surface inside the guide groove. Attached Figure Description

[0011] Figure 1 A schematic diagram of the overall structure of a chip-position adjustable Hall crankshaft position sensor provided in this application embodiment. Figure 1 ;

[0012] Figure 2 A cross-sectional view of a chip-position adjustable Hall crankshaft position sensor provided in an embodiment of this application;

[0013] Figure 3 for Figure 2 Enlarged view of section A in the middle;

[0014] Figure 4 This is a schematic diagram of the exploded structure of the piercing screw and the protective end.

[0015] The following are the labeling elements in the figure:

[0016] 1. Sensor body; 11. Sensing end; 12. Interface; 13. Guide groove; 14. Filler groove; 141. Puncture filler; 15. Scale line; 2. Fixing ring; 21. Fixing hole; 22. Guide hole; 3. Locking assembly; 31. Puncture screw; 311. Protective end; 32. Support column; 4. Threaded sleeve. Detailed Implementation

[0017] Based on this, in order to adapt the crankshaft position sensor to mounting holes of different lengths, the embodiments of this application provide the following solutions.

[0018] The following combination Figures 1-4 This application will be described in further detail.

[0019] This embodiment discloses a chip position adjustable Hall crankshaft position sensor, including a sensor body 1, a fixing ring 2, and a locking component 3. One end of the sensor body 1 is a sensing end 11, and the other end is an interface 12. A guide groove 13 is provided on the sensor body 1. A fixing hole 21 and a guide hole 22 that cooperates with the guide groove 13 are provided on the fixing ring 2. The sensor body 1 passes through the guide hole 22 and is slidably connected to the fixing ring 2. The locking component 3 is provided on the fixing ring 2 and is used to lock the fixing ring 2 on the sensor body 1.

[0020] As can be seen from the above, the Hall crankshaft position sensor with adjustable chip position provided in this application embodiment, in the initial state, the locking component 3 locks the fixing ring 2 on the sensor body 1, and the fixing ring 2 is a pre-set standard length away from the sensing end 11; when installing the sensor, if the size of the mounting hole on the engine does not match the sensor, the appropriate position of the fixing ring 2 on the sensor body 1 is first determined by actual data such as the size of the mounting hole and the length of the distance between the sensing end 11 and the fixing ring 2, then the locking component 3 is released from the locking of the fixing ring 2 and the fixing ring 2 is moved to the appropriate position, and then the locking component 3 is used to lock the fixing ring 2, and then the sensing end 11 of the sensor body 1 is inserted into the mounting hole of the engine housing, and the fixing ring 2 is bolted to the engine housing by the fixing hole 21 cooperating with the threaded hole on the engine housing, so that the Hall chip inside the sensing end 11 is kept at a suitable distance from the signal wheel.

[0021] In some embodiments, please refer to the following: Figures 1 to 3 The locking components 3 are symmetrically arranged in two sets. The locking components 3 include a piercing screw 31 and a support column 32. One end of the support column 32 is fixedly connected to the side of the fixing ring 2. The tip of the piercing screw 31 passes through the support column 32 and the fixing ring 2. The piercing screw 31 is threadedly connected to the support column 32.

[0022] With this configuration, the housing material of the sensor body 1 is made of plastic. Tightening the piercing screw 31 can push it closer to or away from the fixing ring 2. When manufacturing the sensor, tightening the piercing screw 31 so that its tip penetrates a short distance into the sensor body 1 can initially fix the fixing ring 2. When installing the sensor, tightening the piercing screw 31 so that its tip separates from the sensor body 1 can release the lock on the fixing ring 2. Then, after adjusting the fixing ring 2 to a suitable position, tighten the piercing screw 31 again so that its tip penetrates into the sensor body 1. Finally, the head of the piercing screw 31 is pressed against the fixing post, and the piercing screw 31 penetrates a certain distance into the sensor body 1, completely locking the fixing ring 2 onto the sensor body 1.

[0023] Optionally, in some embodiments, please refer to Figures 1 to 3 A filling groove 14 is provided on the outer peripheral surface of the sensor body 1, and the filling groove 14 is filled with puncture filler 141.

[0024] With this configuration, the puncture filler 141 can be made of a softer and more malleable material than the housing material of the sensor body 1. When the puncture screw 31 is turned to lock the fixing ring 2, the tip of the puncture screw 31 will penetrate into the puncture filler 141 a certain distance to lock the fixing ring 2 onto the sensor body 1, thus avoiding the puncture screw 31 directly penetrating the sensor body 1 and causing damage.

[0025] Optionally, please refer to Figures 2 to 4 The tip of the puncture screw 31 is threaded with a protective end 311, and the side of the protective end 311 away from the puncture screw 31 abuts against the puncture filler 141.

[0026] With this setup, when initial locking of the retaining ring 2 is required, simply tighten the piercing screw 31 to press the protective end 311 against the surface of the sensor body 1. When testing the appropriate position of the retaining ring 2, first move the retaining ring 2 to the desired test position, then tighten both piercing screws 31 to initially lock the retaining ring 2. Then, install the sensor on the engine and test it. If the test result is qualified, remove the sensor and tighten one piercing screw 31 to remove it from the support column 32. The piercing screw 31 will bring out the protective end 311 along with it. At this time, the other piercing screw 31 can maintain the initial lock on the retaining ring 2. Then, remove the protective end 311 from the piercing screw 31, and screw the piercing screw 31 back to the original position and tighten it so that it penetrates into the piercing filler 141 to lock the retaining ring 2. Then, follow the same steps to remove the protective end 311 from the other piercing screw 31 and screw it back to the original position to completely lock the retaining ring 2. After that, install the sensor on the engine. During this process, the protective end 311 can protect the piercing filler 141 from damage when the piercing screw 31 initially locks the retaining plate, and prevent the piercing filler 141 from being squeezed and damaged by the tip of the piercing screw 31 and bulging outward, which would cause the retaining ring 2 to slide poorly on the sensor body 1.

[0027] In some embodiments, please refer to Figure 1 and Figure 3 The end of the support column 32 away from the fixing ring 2 is provided with a threaded sleeve 4, and the piercing screw 31 passes through the inside of the threaded sleeve 4 and is threadedly connected to the threaded sleeve 4.

[0028] With this configuration, the threaded sleeve 4 is made of metal, which provides better support and push for the piercing screw 31.

[0029] Optionally, in some embodiments, please refer to Figure 1 The sensor body 1 has a scale line 15 on its outer peripheral surface inside the guide groove 13.

[0030] With this setting, the scale line 15 indicates the length, which can help the staff move the fixed ring 2 more accurately, thus facilitating the staff to debug the sensor.

[0031] The above description is merely a preferred embodiment of this application and does not limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A chip position adjustable Hall crank position sensor, characterized by: The sensor body (1), the fixing ring (2), and the locking component (3) are included. One end of the sensor body (1) is the sensing end (11) and the other end is the interface (12). The sensor body (1) has a guide groove (13). The fixing ring (2) has a fixing hole (21) and a guide hole (22) that cooperates with the guide groove (13). The sensor body (1) passes through the guide hole (22) and is slidably connected to the fixing ring (2). The locking component (3) is set on the fixing ring (2) and is used to lock the fixing ring (2) on the sensor body (1).

2. A Hall crank position sensor with adjustable chip position according to claim 1, characterized in that: The locking assembly (3) is symmetrically arranged in two sets. The locking assembly (3) includes a piercing screw (31) and a support column (32). One end of the support column (32) is fixedly connected to the side of the fixing ring (2). The tip of the piercing screw (31) passes through the support column (32) and the fixing ring (2). The piercing screw (31) is threadedly connected to the support column (32).

3. A Hall crank position sensor with adjustable chip position according to claim 2, characterized in that: The sensor body (1) has a filling groove (14) on its outer peripheral surface, and the filling groove (14) is filled with puncture filler (141).

4. A Hall crank position sensor with adjustable chip position according to claim 3, characterized in that: The tip of the puncture screw (31) is threaded with a protective end (311), the side of the protective end (311) away from the puncture screw (31) abutting against the puncture filler (141).

5. A Hall crank position sensor with adjustable chip position according to claim 2, characterized in that: The end of the support column (32) away from the fixing ring (2) is provided with a threaded sleeve (4), and the piercing screw (31) passes through the inside of the threaded sleeve (4) and is threadedly connected to the threaded sleeve (4).

6. A chip-position adjustable Hall crankshaft position sensor according to claim 4, characterized in that: The sensor body (1) has scale lines (15) on its outer peripheral surface inside the guide groove (13).

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