Automobile rotor position sensor assembly

Abstract

The utility model discloses an automobile rotor position sensor assembly which comprises a supporting frame and a sensor body, the supporting frame is located right above the sensor body, an adjusting assembly is installed in the supporting frame, the adjusting assembly comprises a first lead screw, the first lead screw is rotatably connected in the supporting frame, and a second lead screw is installed in the supporting frame. The outer portion of the first lead screw is in threaded connection with a connecting plate, two guide rods are fixedly connected to the interior of the supporting frame, the two guide rods are sleeved with the connecting plate in a sliding mode, and a movable frame is slidably connected to the outer wall of the bottom of the supporting frame in an inserted mode and fixedly connected to the outer wall of the bottom of the connecting plate. According to the utility model, through the arrangement of the adjusting assembly, the degree of the sensor body extending into the rotor can be adjusted as required, the stability of the performance of the sensor can be ensured, the sensor can be driven to be separated from the rotor as required, and the maintenance is convenient.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to an automotive rotor position sensor assembly. Background Technology

[0002] The rotor position sensor assembly is a key component in the control system of an automotive engine or motor. In traditional gasoline-powered vehicles, it is mainly used to detect the position information of the engine crankshaft or camshaft rotor, providing precise signals to the engine control unit to determine key parameters such as fuel injection timing and ignition timing, thereby ensuring the normal operation and high efficiency of the engine.

[0003] A search revealed a utility model patent with Chinese patent publication number CN206338129U, which discloses a crankshaft position sensor assembly and an automobile. The crankshaft position sensor assembly includes a crankshaft position sensor and a protective cover. The protective cover includes a support plate, a plurality of protective plates extending outward from the edge of the support plate and bent to form a fixing plate, and at least one fixing plate. The plurality of protective plates form a semi-enclosed structure, and the crankshaft position sensor is disposed in the semi-enclosed structure.

[0004] As described above, the position of the sensor is restricted by the protective cover, so its position is fixed. During the detection process, the sensor may be subject to electromagnetic interference from the surrounding environment. The extent to which the sensor extends into the rotor affects the degree of interference. The operation of the above device is relatively inconvenient and there is room for improvement. Utility Model Content

[0005] The purpose of this invention is to provide an automotive rotor position sensor assembly to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automotive rotor position sensor assembly, comprising a support frame and a sensor body, wherein the support frame is positioned directly above the sensor body, and an adjustment component is installed inside the support frame, the adjustment component comprising a lead screw, the lead screw being rotatably connected inside the support frame, a connecting plate being threadedly connected to the lead screw, two guide rods being fixedly connected inside the support frame, the connecting plate being slidably sleeved on the outside of the two guide rods, and a movable frame being slidably inserted into the bottom outer wall of the support frame, the movable frame being fixedly connected to the bottom outer wall of the connecting plate.

[0007] As a further preferred embodiment of this technical solution, the connecting plate has two horizontally arranged reinforcing bolts internally threaded, and the two reinforcing bolts are respectively attached to the outer walls of the two guide rods.

[0008] The extent to which the sensor body extends into the rotor can be adjusted as needed, which helps ensure the stability of the sensor's performance and also allows the sensor to be driven out of the rotor when needed, facilitating maintenance. To adjust the extent to which the sensor body extends into the rotor, the turntable drives the lead screw to rotate, which in turn drives the connecting plate to move along the two guide rods. The moving frame installed at the bottom of the connecting plate is driven to move synchronously, and the extent to which the sensor body extends into the rotor at the bottom of the moving frame will also change. Then, the reinforcing bolt is rotated, causing the reinforcing bolt to press against the outer wall of the guide rod along the connecting plate. Under the action of friction, the stability of the connecting plate can be further improved.

[0009] As a further preferred embodiment of this technical solution, a fixing component is installed inside the movable frame. The fixing component includes two guide grooves, which are respectively opened on the inner walls of both ends of the movable frame. Two symmetrically arranged movable seats are slidably connected to the two guide grooves. A clamping plate is fixedly connected to one bottom end of each of the two movable seats. A horizontally arranged bidirectional lead screw is rotatably connected inside the movable frame, and the two movable seats are threaded to the threads at both ends of the bidirectional lead screw.

[0010] As a further preferred embodiment of this technical solution, a connecting ring is fixedly installed at the top position of the outer circumference of the sensor body, and both clamping plates are inserted into the groove inside the connecting ring.

[0011] To replace the sensor body, drive the knob to rotate the bidirectional lead screw inside the moving frame. The bidirectional lead screw drives the two moving seats to move away from each other along the guide groove. Then, the clamping plate at the bottom of the moving seat is driven to disengage from the groove inside the connecting ring, allowing for direct replacement. After the work is completed, the insertion hole at the top of the moving seat will move to the bottom of the limit pin. The limit pin can be inserted into the insertion hole to ensure that the moving seat will not move during use.

[0012] As a further preferred embodiment of this technical solution, an extension plate is fixedly connected to the inner wall of one end of the movable frame, and a limit pin is threadedly connected inside the extension plate. An insertion hole adapted to the limit pin is opened on the top outer wall of one of the movable seats.

[0013] As a further preferred embodiment of this technical solution, the internal groove of the connecting ring is polygonal.

[0014] As a further preferred embodiment of this technical solution, the top of the support frame is provided with several connection holes.

[0015] This utility model provides an automotive rotor position sensor assembly, which has the following advantages:

[0016] (1) By setting an adjustment component, the degree to which the sensor body extends into the rotor can be adjusted as needed, which is beneficial to ensure the stability of the sensor performance and can also drive the sensor out of the rotor when needed, making maintenance convenient. If it is necessary to adjust the degree to which the sensor body extends into the rotor, the turntable drives the lead screw to rotate, and the lead screw can drive the connecting plate to move along the two guide rods. The moving frame installed at the bottom of the connecting plate is driven to move synchronously, and the degree to which the sensor body extends into the rotor installed at the bottom of the moving frame will also change. Then, the reinforcing bolt is rotated so that the reinforcing bolt presses against the outer wall of the guide rod along the connecting plate. Under the action of friction, the stability of the connecting plate can be further improved.

[0017] (2) By setting a fixed component, if the sensor body needs to be replaced, the knob is driven to rotate the bidirectional lead screw inside the moving frame. The bidirectional lead screw drives the two moving seats to move away from each other along the guide groove. Then the clamping plate at the bottom of the moving seat is driven to disengage from the groove inside the connecting ring, and can be directly replaced. After the work is completed, the insertion hole at the top of the moving seat will move to the bottom of the limit pin. The limit pin can be inserted into the insertion hole to ensure that the moving seat will not move during use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall first-view structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall second-view structure of this utility model;

[0020] Figure 3 This is a partially enlarged structural diagram of the fixing component of this utility model;

[0021] Figure 4 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0022] In the diagram: 1. Support frame; 2. Sensor body; 3. Connecting hole; 4. Adjustment component; 5. Fixing component; 401. Moving frame; 402. Connecting plate; 403. Lead screw; 404. Guide rod; 405. Reinforcing bolt; 501. Guide groove; 502. Moving seat; 503. Clamping plate; 504. Bidirectional lead screw; 505. Connecting ring; 506. Extension plate; 507. Limiting pin; 508. Insertion hole. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] This utility model provides a technical solution: such as Figure 1 and Figure 2As shown, in this embodiment, an automotive rotor position sensor assembly includes a support frame 1 and a sensor body 2 (using a giant magnetoresistive (GMR) sensor: compared to traditional Hall effect sensors, GMR sensors are more sensitive to changes in magnetic fields and can detect weaker magnetic field differences). The support frame 1 is located directly above the sensor body 2. An adjustment component 4 is installed inside the support frame 1. The adjustment component 4 includes a lead screw 403, which is rotatably connected inside the support frame 1. A connecting plate 402 is threadedly connected to the outside of the lead screw 403. Two guide rods 404 are fixedly connected inside the support frame 1. The connecting plate 402 is slidably sleeved on the outside of the two guide rods 404. A movable frame 401 is slidably inserted into the bottom outer wall of the support frame 1. The movable frame 401 is fixedly connected to the bottom outer wall of the connecting plate 402.

[0025] The connecting plate 402 has two horizontally arranged reinforcing bolts 405 internally threaded, and the two reinforcing bolts 405 are respectively attached to the outer wall of the two guide rods 404.

[0026] To adjust the extent to which the sensor body 2 extends into the rotor, the turntable drives the lead screw 403 to rotate. The lead screw 403 then drives the connecting plate 402 to move along the two guide rods 404. The moving frame 401, installed at the bottom of the connecting plate 402, is moved synchronously, and the extent to which the sensor body 2 extends into the rotor, installed at the bottom of the moving frame 401, also changes. Then, the reinforcing bolt 405 is rotated, causing the reinforcing bolt 405 to press against the outer wall of the guide rod 404 along the connecting plate 402. Under the action of friction, the stability of the connecting plate 402 can be further improved.

[0027] like Figure 2 , Figure 3 and Figure 4 As shown, a fixing component 5 is installed inside the movable frame 401. The fixing component 5 includes two guide grooves 501, which are respectively opened on the inner walls of both ends of the movable frame 401. The two guide grooves 501 are slidably connected to two symmetrically arranged movable seats 502. A clamping plate 503 is fixedly connected to one bottom end of each of the two movable seats 502. A horizontally arranged bidirectional lead screw 504 is rotatably connected inside the movable frame 401. The two movable seats 502 are threadedly connected to the threads at both ends of the bidirectional lead screw 504. The thread helix angle of the lead screw 403 and the external threads of the bidirectional lead screw 504 is less than the equivalent friction angle.

[0028] A connecting ring 505 is fixedly installed at the top of the outer circumference of the sensor body 2, and two clamping plates 503 are inserted into the groove inside the connecting ring 505.

[0029] An extension plate 506 is fixedly connected to the inner wall of one end of the movable frame 401. A limit pin 507 is threadedly connected inside the extension plate 506. An insertion hole 508 adapted to the limit pin 507 is opened on the outer wall of the top of one of the movable seats 502.

[0030] If the sensor body 2 needs to be replaced, drive the knob to rotate the bidirectional lead screw 504 inside the moving frame 401. The bidirectional lead screw 504 drives the two moving seats 502 to move away from each other along the guide groove 501. Then the clamping plate 503 at the bottom of the moving seat 502 is driven to disengage from the groove inside the connecting ring 505, and can be directly replaced. After the work is completed, the insertion hole 508 at the top of the moving seat 502 will move to the bottom of the limit pin 507. The limit pin 507 can be inserted into the insertion hole 508 to ensure that the moving seat 502 will not move during use.

[0031] like Figure 2 and Figure 3 As shown, the internal groove of the connecting ring 505 is polygonal. When it is fitted and fixed with the clamping plate 503, it can effectively prevent the connecting ring 505 and the sensor body 2 from rotating.

[0032] like Figure 1 As shown, the top of the support frame 1 has several connecting holes 3, and the connectors can pass through the connecting holes 3 to connect and fix with the external connecting frame.

[0033] This utility model provides an automotive rotor position sensor assembly, the specific working principle of which is as follows:

[0034] The support frame 1 is fixed inside the vehicle body with a connecting bracket of appropriate height, ensuring that the sensor body 2 can completely enter the rotor and also completely detach. When the device is working, as the rotor rotates, the protrusions or grooves on the rotor will change the magnetic field around the sensor coil, thereby generating an induced electromotive force in the coil. The magnitude and phase of the induced electromotive force are related to the position of the rotor. The engine control unit determines the position of the rotor by analyzing the induced electromotive force. If it is necessary to adjust the degree to which the sensor body 2 extends into the rotor, the turntable drives the lead screw 403 to rotate. The lead screw 403 can then drive the connecting plate 402 to move along the two guide rods 404. The moving frame 401 installed at the bottom of the connecting plate 402 is driven to move synchronously, and the degree to which the sensor body 2 extends into the rotor installed at the bottom of the moving frame 401 will also change. Then, the reinforcing bolt 405 is rotated, causing the reinforcing bolt 405 to press against the outer wall of the guide rod 404 along the connecting plate 402. Under the action of friction, the stability of the connecting plate 402 can be further improved. To replace the sensor body 2, drive the knob to rotate the bidirectional lead screw 504 inside the moving frame 401. The bidirectional lead screw 504 drives the two moving seats 502 to move away from each other along the guide groove 501. Then, the clamping plate 503 at the bottom of the moving seat 502 is driven to disengage from the groove inside the connecting ring 505, and can be directly replaced. After the work is completed, the insertion hole 508 at the top of the moving seat 502 will move directly below the limit pin 507. The limit pin 507 can be inserted into the insertion hole 508 to ensure that the moving seat 502 will not move during use. Since the groove inside the connecting ring 505 is polygonal, when it is fitted and fixed with the clamping plate 503, it can effectively prevent the connecting ring 505 and the sensor body 2 from rotating.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automotive rotor position sensor assembly comprising a support frame (1) and a sensor body (2), characterized in that: The support frame (1) is located directly above the sensor body (2). An adjustment component (4) is installed inside the support frame (1). The adjustment component (4) includes a lead screw (403), which is rotatably connected inside the support frame (1). A connecting plate (402) is threadedly connected to the outside of the lead screw (403). Two guide rods (404) are fixedly connected inside the support frame (1). The connecting plate (402) is slidably sleeved on the outside of the two guide rods (404). A movable frame (401) is slidably inserted into the bottom outer wall of the support frame (1). The movable frame (401) is fixedly connected to the bottom outer wall of the connecting plate (402).

2. An automotive rotor position sensor assembly as claimed in claim 1, wherein: The connecting plate (402) has two horizontally arranged reinforcing bolts (405) internally threaded, and the two reinforcing bolts (405) are respectively attached to the outer wall of the two guide rods (404).

3. An automotive rotor position sensor assembly as claimed in claim 1, wherein: The movable frame (401) is equipped with a fixing component (5). The fixing component (5) includes two guide grooves (501). The two guide grooves (501) are respectively opened on the inner walls of both ends of the movable frame (401). The two guide grooves (501) are slidably connected to two symmetrically arranged movable seats (502). A clamping plate (503) is fixedly connected to one bottom end of each of the two movable seats (502). A horizontally arranged bidirectional lead screw (504) is rotatably connected inside the movable frame (401). The two movable seats (502) are threadedly connected to the threads at both ends of the bidirectional lead screw (504).

4. An automotive rotor position sensor assembly as claimed in claim 3, wherein: A connecting ring (505) is fixedly installed at the top of the outer circumference of the sensor body (2), and the two clamping plates (503) are inserted into the groove inside the connecting ring (505).

5. An automotive rotor position sensor assembly as claimed in claim 3, wherein: An extension plate (506) is fixedly connected to the inner wall of one end of the movable frame (401). A limit pin (507) is threaded inside the extension plate (506). An insertion hole (508) adapted to the limit pin (507) is opened on the top outer wall of one of the movable seats (502).

6. An automotive rotor position sensor assembly as claimed in claim 4, wherein: The internal groove of the connecting ring (505) is polygonal.

7. An automotive rotor position sensor assembly as claimed in claim 1, wherein: The support frame (1) has several connection holes (3) inside the top.

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