Camshaft position sensor with stable chip structure

Abstract

The utility model relates to the technical field of camshaft position sensors, in particular to a camshaft position sensor with a stable chip structure, which comprises a sensor main body, a shell and a connecting wire, one side of the sensor main body is movably connected with the shell, and the outer side of the sensor main body is provided with a stable locking and fixing structure. The stable locking and fixing structure comprises a sleeve, cavities and winding rollers, the sleeve is fixedly connected to the outer wall of the sensor body, and the two winding rollers are rotationally connected into the two cavities. According to the camshaft position sensor with the stable chip structure, the mounting rod is sleeved with the sleeve, the friction wheel can drive the threaded rod to rotate in the cavity and then drive the winding roller on one side to rotate, and the rotating winding roller can tension and wind a tightening belt; the installation site of the camshaft position sensor is fixed well in a firmer and more convenient fixing mode, and the working effect of the camshaft position sensor with the stable chip structure is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of camshaft position sensors, in particular to a camshaft position sensor with a stable chip structure. Background Art

[0002] The camshaft position sensor is used to collect the camshaft dynamic angle signal and input it into the electronic control unit to determine the ignition timing and injection timing. The camshaft position sensor is also called the cylinder identification sensor. In order to distinguish it from the crankshaft position sensor, the camshaft position sensor is generally represented by CIS. The function of the camshaft position sensor is to collect the position signal of the valve camshaft and input it into the ECU so that the ECU can identify the cylinder compression top dead center, thereby performing sequential injection control, ignition timing control and detonation control.

[0003] For example, the authorization announcement number "CN202329525U" is named a camshaft position sensor. Although a hole and a fixing structure for installing the Hall element are provided on the core head, with reasonable size control, the element can be flush with the core head plane, so that the core head always keeps a close fit with the inner wall of the shell, thus eliminating the gap between the core head and the sensor shell. However, the existing camshaft position sensor uses an O-ring on one side of the sensor to be installed at the position where the sensor needs to be installed, and only relies on the friction force on the inside of the O-ring and the mounting rod to achieve fixation. As the vehicle travels near the camshaft, the bumps will be more severe, so the installation and fixation of the camshaft position sensor is not firm and stable enough, and it is often prone to deflection or swinging on the mounting rod. This causes the chip structure at the front end of the camshaft position sensor to change, and it cannot be accurately aligned with the vehicle camshaft that needs to be identified, affecting the working effect of the camshaft position sensor.

[0004] At the same time, the existing camshaft position sensor needs to be installed and fixed in a position near the camshaft of the car during actual use, and then the connecting line of the sensor is connected to the camshaft position sensor wiring plug. However, the fixed installation structure position of the camshaft position sensor is relatively fixed. Therefore, after the sensor itself is fixed, the wiring may cause the connecting line to bend or twist when connecting with the sensor. Therefore, the twisted connecting line is easy to be damaged or the connection is unstable, which directly affects the cost increase of the camshaft position sensor. Utility Model Content

[0005] The utility model aims to solve the problems of poor working effect and increased use cost of a camshaft position sensor, and proposes a camshaft position sensor with a stable chip structure.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a camshaft position sensor with a stable chip structure, comprising a sensor body, a shell and a connecting line, one side of the sensor body is movably connected to the shell, the outer side of the sensor body is provided with a stable locking and fixing structure, the stable locking and fixing structure comprises a sleeve, a cavity and a winding roller, the sleeve is fixedly connected to the outer wall of the sensor body, both sides of the sleeve are fixedly connected to the cavity, the interior of the cavity is rotatably connected to the winding roller, one side of the winding roller is fixedly connected to a threaded rod, the outer side of the threaded rod is threadably connected to the cavity, the end of the threaded rod is fixedly connected to a friction wheel, the outer side of the winding roller is movably wrapped with a tensioning belt, and the inner side of the tensioning belt is movably connected to the interior of the sleeve.

[0007] Preferably, a mounting rod is movably sleeved on the inner side of the sleeve, the inner side of the tensioning band is movably connected to the outer wall of the mounting rod, and one side of the mounting rod and the sensor body are arranged parallel to each other.

[0008] Preferably, a camshaft position identification structure is provided inside the housing;

[0009] The camshaft position identification structure comprises a connecting pipe, a sealing layer and a card seat;

[0010] The connecting tube is fixedly installed at the end of the shell, the inner side of the connecting tube is movably sleeved with a sealing layer, the card holder is fixedly installed inside the shell, the inner side of the card holder is fixedly clamped with a chip body, the inner side of the card holder is fixedly installed with a PCB board, and the end of the PCB board is fixedly connected to one end of the chip body.

[0011] Preferably, a connecting line multi-angle docking structure is provided on one side of the sensor body;

[0012] The connecting line multi-angle docking structure comprises a fixed tube, a movable tube and a transmission line;

[0013] The fixed tube is fixedly installed on one side of the sensor body, and the other end of the fixed tube is movably connected to a rotating shaft, and semi-arc plates are rotatably connected to both sides of the rotating shaft. The other sides of the two semi-arc plates are fixedly connected to a movable tube, and the inner sides of the two semi-arc plates are threadedly connected to bolts, and the inner sides of the bolts are threadedly connected to the rotating shaft, and the transmission line is fixedly installed inside the fixed tube.

[0014] Preferably, a docking hole is fixedly installed on the inner side of the end of the movable tube, the connecting line is movably connected to the end of the docking hole, and the connecting line is connected to the transmission line.

[0015] Preferably, a mounting plate is fixedly mounted above the sensor body, and the other end of the transmission line is electrically connected to the chip body.

[0016] The utility model proposes a camshaft position sensor with a stable chip structure, which has the beneficial effect of: by sleeve-fitting the outer side of the mounting rod and then adjusting the position of the end shell to a suitable angle with the sensor body, the friction wheel will drive the threaded rod to rotate inside the cavity, and then drive the winding roller on one side to rotate, the rotating winding roller will tighten and wrap the tensioning belt, and the installation location of the camshaft position sensor is fixed in a more firm and convenient fixing method, thereby improving the working effect of the camshaft position sensor with a stable chip structure.

[0017] When the bolt is pulled out of the inner side of the semi-arc plate by rotating the bolt, the semi-arc plates on both sides will rotate along the rotating shaft at the front end of the fixed tube, so that the semi-arc plate can drive the movable tube to rotate at the front end of the fixed tube. In this way, the orientation of the movable tube can be adjusted according to the insertion angle of the connecting line. The angle-adjustable docking connecting line structure is utilized to avoid the connecting line from being easily bent and broken, thereby reducing the working cost of the camshaft position sensor with a stable chip structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0019] Figure 2 for Figure 1 A front cross-sectional schematic diagram of

[0020] Figure 3 for Figure 1 A schematic top view of the top surface;

[0021] Figure 4 for Figure 2 Enlarged cross-sectional view of part A in the middle;

[0022] Figure 5 for Figure 2 Enlarged cross-sectional view of part B in the middle;

[0023] Figure 6 for Figure 2 Schematic diagram of the pressure gauge structure.

[0024] In the figure: 1. sensor body, 2. housing, 3. connecting wire, 4. mounting rod, 5. camshaft position identification structure, 51. connecting tube, 52. sealing layer, 53. PCB board, 54. holder, 55. chip body, 6. stable locking and fixing structure, 61. sleeve, 62. cavity, 63. winding roller, 64. tensioning belt, 65. threaded rod, 66. friction wheel, 7. connecting wire multi-angle docking structure, 71. fixed tube, 72. semi-arc plate, 73. movable tube, 74. rotating shaft, 75. bolt, 76. transmission line, 8. docking hole, 9. mounting plate. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings:

[0026] See also Figure 1-6 A camshaft position sensor with a stable chip structure comprises a sensor body 1, a housing 2 and a connecting line 3. The housing 2 is movably connected to one side of the sensor body 1. A stable locking and fixing structure 6 is arranged on the outer side of the sensor body 1. The stable locking and fixing structure 6 comprises a sleeve 61, a cavity 62 and a winding roller 63. The sleeve 61 is fixedly connected to the outer wall of the sensor body 1. The two sides of the sleeve 61 are fixedly connected to the cavity 62. The interior of the cavity 62 is rotatably connected to the winding roller 63. A threaded rod 65 is fixedly connected to one side of the winding roller 63. The outer side of the threaded rod 65 is threadedly connected to the cavity 62. The end of the threaded rod 65 is fixedly connected to a friction wheel 66. The outer wall of the friction wheel 66 is provided with multiple rows of small protrusions to increase the friction with a human hand. A tensioning belt 64 is movably wound around the outer side of the winding roller 63. The tensioning belt 64 is made of a soft steel material with excellent toughness and not easy to break, so as to better tighten and fix the mounting rod 4.

[0027] The inner side of the tensioning band 64 is movably connected to the inner side of the sleeve 61, and the inner side of the sleeve 61 is movably sleeved with the mounting rod 4, which is fixed on the car body to facilitate the fixing and use of the sensor body 1. When the sensor body 1 needs to be installed, the sleeve 61 is sleeved on the outer side of the mounting rod 4, and then the position of the end shell 2 is adjusted to reach a suitable angle with the sensor body 1. At this time, the friction wheel 66 is manually twisted to rotate, and the friction wheel 66 will drive the threaded rod 65 to rotate inside the cavity 62, and then drive the winding roller 63 on one side to rotate. The rotating winding roller 63 will tighten and wrap the tensioning band 64, so that the tensioning band 64 will be tightened and fixed to the outer wall of the mounting rod 4 by tension and extrusion force. The inner side of the tensioning band 64 is movably connected to the outer wall of the mounting rod 4, and one side of the mounting rod 4 and the sensor body 1 are arranged parallel to each other;

[0028] The sensor body 1 is fixed on the car body by the mounting rod 4, which is convenient for fixing and using. When the sensor body 1 needs to be installed, the sleeve 61 is put on the outside of the mounting rod 4, and then the position of the end shell 2 is adjusted to a suitable angle with the sensor body 1. At this time, the friction wheel 66 is manually turned to rotate, and the friction wheel 66 will drive the threaded rod 65 to rotate inside the cavity 62, and then drive the winding roller 63 on one side to rotate. The rotating winding roller 63 will tighten and wrap the tension belt 64, so that the tension belt 64 will be tightened and fixed to the outer wall of the mounting rod 4 by tension and extrusion force. The installation location of the camshaft position sensor is fixed in a more firm and convenient fixing method, thereby improving the use effect of the camshaft position sensor with a stable chip structure.

[0029] See also Figure 1-6A connecting wire multi-angle docking structure 7 is provided on one side of the sensor body 1. The connecting wire multi-angle docking structure 7 includes a fixed tube 71, a movable tube 73 and a transmission line 76. The fixed tube 71 is fixedly installed on one side of the sensor body 1. The other end of the fixed tube 71 is movably connected to a rotating shaft 74. The two sides of the rotating shaft 74 are rotatably connected to semi-arc plates 72. When the bolt 75 is rotated to pull the bolt 75 out of the inner side of the semi-arc plate 72, the semi-arc plates 72 on both sides will rotate along the rotating shaft 74 at the front end of the fixed tube 71. In this way, the semi-arc plate 72 can drive the movable tube 73 to rotate at the front end of the fixed tube 71. In this way, the orientation position of the movable tube 73 can be adjusted according to the insertion angle of the connecting wire 3, so that the connecting wire 3 is convenient for docking and installation with the docking hole 8;

[0030] Then, the bolt 75 is screwed back between the semi-arc plate 72 and the rotating shaft 74 to be locked. The other side of the two semi-arc plates 72 is fixedly connected with the movable tube 73. The inner sides of the two semi-arc plates 72 are threadedly connected with the bolt 75. The inner sides of the bolt 75 are threadedly connected with the rotating shaft 74. The transmission line 76 is fixedly installed inside the fixed tube 71. The inner side of the end of the movable tube 73 is fixedly installed with a docking hole 8. The connecting line 3 is movably connected to the end of the docking hole 8. The connecting line 3 is connected with the transmission line 76.

[0031] When the bolt 75 is pulled out of the inner side of the semi-arc plate 72 by rotating the bolt 75, the semi-arc plates 72 on both sides will rotate along the rotating shaft 74 at the front end of the fixed tube 71, so that the semi-arc plate 72 can drive the movable tube 73 to rotate at the front end of the fixed tube 71. In this way, the orientation of the movable tube 73 can be adjusted according to the insertion angle of the connecting line 3, so that the connecting line 3 and the docking hole 8 can be docked and installed, and then the bolt 75 is tightened between the semi-arc plate 72 and the rotating shaft 74 to lock it. The docking connecting line structure with adjustable angle is used to avoid the connection line from being easily bent and broken, thereby reducing the working cost of the camshaft position sensor with a stable chip structure.

[0032] See also Figure 1-6 A camshaft position identification structure 5 is provided inside the housing 2. The camshaft position identification structure 5 includes a connecting pipe 51, a sealing layer 52 and a holder 54. The connecting pipe 51 is fixedly installed at the end of the housing 2. The inner side of the connecting pipe 51 is movably sleeved with the sealing layer 52. The sealing layer 52 is made of rubber material and can be sealed on the gap between the connecting pipe 51 and the housing to reduce dust entry. The holder 54 is fixedly installed inside the housing 2.

[0033] The chip body 55 is fixedly connected to the inner side of the card holder 54. The chip body 55 and the PCB board 53 both adopt the existing technical structure of a camshaft position sensor with the patent number of the comparative document "CN202329525U". The chip body 55 can identify and sense the position relative to the camshaft. The PCB board 53 is fixedly installed inside the shell 2. The end of the PCB board 53 is fixedly connected to one end of the chip body 55. A mounting plate 9 is fixedly installed above the sensor body 1. Additional fixing screws can be inserted into the mounting plate 9 to improve the installation firmness. The other end of the transmission line 76 is electrically connected to the chip body 55.

[0034] Working principle:

[0035] When the camshaft position sensor with a stable chip structure is used to determine the camshaft position of the vehicle:

[0036] Camshaft position sensor with stable chip structure and stable installation structure:

[0037] The sensor body 1 is fixed to the car body by the mounting rod 4, so that the sensor body 1 can be fixed and used conveniently. When the sensor body 1 needs to be installed, the sleeve 61 is sleeved on the outside of the mounting rod 4, and then the position of the end housing 2 is adjusted to a suitable angle with the sensor body 1. At this time, the friction wheel 66 is manually turned to rotate, and the friction wheel 66 drives the threaded rod 65 to rotate inside the cavity 62, and then drives the winding roller 63 on one side to rotate. The rotating winding roller 63 will tighten the tension belt 64 and wrap it, so that the tension belt 64 will be tightened and fixed to the outer wall of the mounting rod 4 by tension and extrusion force, and the installation location of the camshaft position sensor can be fixed by a more firm and convenient fixing method;

[0038] The chip structure is stable. The connection line of the camshaft position sensor has a multi-angle insertion structure:

[0039] When the bolt 75 is pulled out of the inner side of the semi-arc plate 72 by rotating the bolt 75, the semi-arc plates 72 on both sides will rotate along the rotating shaft 74 at the front end of the fixed tube 71, so that the semi-arc plate 72 can drive the movable tube 73 to rotate at the front end of the fixed tube 71. In this way, the orientation of the movable tube 73 can be adjusted according to the insertion angle of the connecting line 3, so that the connecting line 3 and the docking hole 8 can be docked and installed, and then the bolt 75 is tightened between the semi-arc plate 72 and the rotating shaft 74 to lock it. The docking connecting line structure with adjustable angle is used to prevent the connecting line from being easily bent and broken.

[0040] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A camshaft position sensor with a stable chip structure, comprising a sensor body (1), a housing (2) and a connecting line (3), characterized in that: One side of the sensor body (1) is movably connected to a housing (2); the outer side of the sensor body (1) is provided with a stable locking and fixing structure (6); the stable locking and fixing structure (6) comprises a sleeve (61), a cavity (62) and a winding roller (63); the sleeve (61) is fixedly connected to the outer wall of the sensor body (1); the two sides of the sleeve (61) are fixedly connected to the cavity (62); the interior of the cavity (62) is rotatably connected to the winding roller (63); one side of the winding roller (63) is fixedly connected to a threaded rod (65); the outer side of the threaded rod (65) is threadably connected to the cavity (62); the end of the threaded rod (65) is fixedly connected to a friction wheel (66); the outer side of the winding roller (63) is movably wound with a tension belt (64); the inner side of the tension belt (64) is movably connected to the interior of the sleeve (61).

2. The camshaft position sensor with a stable chip structure according to claim 1, characterized in that: The inner side of the sleeve (61) is movably sleeved with a mounting rod (4), the interior of the tensioning band (64) is movably connected to the outer wall of the mounting rod (4), and one side of the mounting rod (4) and the sensor body (1) are arranged parallel to each other.

3. The camshaft position sensor with a stable chip structure according to claim 1, characterized in that: A camshaft position identification structure (5) is provided inside the housing (2); The camshaft position identification structure (5) comprises a connecting pipe (51), a sealing layer (52) and a holder (54); The connecting tube (51) is fixedly mounted on the end of the outer shell (2); a sealing layer (52) is movably sleeved on the inner side of the connecting tube (51); the clamping seat (54) is fixedly mounted inside the outer shell (2); a chip body (55) is fixedly clamped on the inner side of the clamping seat (54); a PCB board (53) is fixedly mounted inside the outer shell (2); and an end of the PCB board (53) is fixedly connected to one end of the chip body (55).

4. The camshaft position sensor with a stable chip structure according to claim 1, characterized in that: A connecting line multi-angle docking structure (7) is provided on one side of the sensor body (1); The connecting line multi-angle docking structure (7) comprises a fixed tube (71), a movable tube (73) and a transmission line (76); The fixed tube (71) is fixedly mounted on one side of the sensor body (1); the other end of the fixed tube (71) is movably connected to a rotating shaft (74); both sides of the rotating shaft (74) are rotatably connected to semi-arc plates (72); the other sides of the two semi-arc plates (72) are fixedly connected to a movable tube (73); the inner sides of the two semi-arc plates (72) are threadedly connected to bolts (75); the inner sides of the bolts (75) are threadedly connected to the rotating shaft (74); and the transmission line (76) is fixedly mounted inside the fixed tube (71).

5. The camshaft position sensor with a stable chip structure according to claim 4, characterized in that: A docking hole (8) is fixedly installed on the inner side of the end of the movable tube (73), the connecting line (3) is movably connected to the end of the docking hole (8), and the connecting line (3) is connected to the transmission line (76).

6. The camshaft position sensor with a stable chip structure according to claim 5, characterized in that: A mounting plate (9) is fixedly mounted above the sensor body (1), and the other end of the transmission line (76) is electrically connected to the chip body (55).

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