TMR sensor convenient to overhaul

Abstract

The invention relates to the technical field of TMR sensors, and particularly discloses a TMR sensor convenient to overhaul, which comprises a base, a mounting mechanism is mounted on the back surface of the base through bolts, a clamping frame is fixedly mounted on the front surface of the base, a sensor body is inserted into the clamping frame, and elastic limiting mechanisms are fixedly mounted in the middles of the two sides of the clamping frame. The sensor body is installed in the clamping frame through an elastic limiting mechanism, the bottom of the sensor body is fixedly connected with a detection probe, the rotating disc is rotated by twisting the adjusting handrail, the torsional spring is tightened, the arc-shaped limiting clamp faces outwards, then the sensor body is inserted into the clamping frame, and the adjusting handrail is loosened. During disassembly, the adjusting knob handle is twisted to enable the arc-shaped limiting clamps to be separated, the arc-shaped limiting clamps and the like are arranged in a concentric circle mode, it is ensured that the sensor body is stably disassembled and assembled, and the device can rapidly and stably complete disassembly and assembly.

Description

Technical Field

[0001] The invention relates to the technical field of TMR sensors, in particular to a TMR sensor which is convenient for maintenance. Background Art

[0002] TMR sensor is an advanced magnetic sensor based on tunnel magnetoresistance effect. The tunnel magnetoresistance effect is manifested in that in a specific magnetic multilayer film structure, when the insulating layer between two layers of magnetic materials is extremely thin, electrons can pass through the insulating layer by quantum tunneling effect, and the resistance will change significantly with the relative change of the magnetization direction of the two layers of magnetic materials. TMR sensor has many significant advantages. It has extremely high sensitivity and can detect extremely weak magnetic field changes. At the same time, its power consumption is relatively low, which helps to save energy and extend the use time of the device. In terms of size, TMR sensor is small and very easy to integrate into a variety of devices. In addition, it has the characteristics of high resolution, which can provide accurate magnetic field measurement results, and has good temperature stability, even in different ambient temperatures, it can still maintain stable performance;

[0003] In view of these excellent characteristics, TMR sensors have been widely used in many fields. In the industrial field, they can be used for high-precision current detection, non-destructive testing of metal materials and other operations; in consumer electronics, they are often used in hard disk heads to improve storage density, and in electronic compasses in smartphones to achieve navigation functions, etc. In the automotive industry, they can be used to accurately measure the speed and position of the vehicle, detect the angle of the steering wheel, etc. In the medical field, they can measure biomagnetism, thus providing a key basis for disease diagnosis;

[0004] A Chinese patent with publication number "CN118151064A" discloses a TMR magnetic field sensor, which includes a protective shell, a mounting plate installed at the bottom end of the protective shell, the upper end of the mounting plate is fixedly connected to the TMR magnetic field sensor body, shock absorbing mechanisms are symmetrically installed at both ends of the protective shell, a first accommodating cavity is symmetrically opened inside the bottom end of the protective shell, a fixing mechanism is installed inside the first accommodating cavity, fixed blocks are fixedly connected at both ends of the protective shell, a second accommodating cavity is symmetrically opened inside the fixed block, a connecting mechanism is installed inside the second accommodating cavity, a connecting groove is opened at the upper end of the fixed block, and a top cover is installed at the upper end of the protective shell. The present invention adopts the above structure to provide convenience for users to install and disassemble the TMR magnetic field sensor. No professional tools are required, and it can be completed by simple operations, saving time and labor costs, and can reduce the risk of sensor damage caused by misoperation, and reduce the cost and risk of repairing and replacing the sensor.

[0005] However, during the application of the above-mentioned sensor, although it can assist in the installation by snap-on connection, the overall disassembly and assembly is still cumbersome and inconvenient during its specific application. It is not convenient to quickly remove the sensor from the inside of the device, and during the disassembly and assembly, the overall installed position is fixed and single. During use, it is not convenient to quickly disassemble and assemble the entire installation structure and flexibly adjust the angle direction. The overall adaptability during use is poor. It can be seen that the existing technical solutions have certain defects and shortcomings and need to be improved urgently. Summary of the invention

[0006] The object of the present invention is to provide a TMR sensor that is easy to repair, so as to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned object, the present invention provides a TMR sensor that is easy to repair, comprising a base, a mounting mechanism is installed on the back of the base by bolts, a card frame is fixedly installed on the front of the base, a sensor body is plugged into the card frame, elastic limiting mechanisms are fixedly installed on the middle of both sides of the card frame, the sensor body is installed in the card frame by the elastic limiting mechanism, and a detection probe is fixedly connected to the bottom of the sensor body;

[0008] The elastic limiting mechanism includes a mounting block and an arc frame, the mounting block is fixedly mounted on the middle part of the front side of the elastic limiting mechanism, the arc frame is fixedly mounted on the middle part of the outer side of the card frame, a torsion spring is fixedly mounted inside the arc frame, a turntable is fixedly mounted on the front end of the torsion spring, an arc-shaped limiting card is fixedly mounted on one side of the turntable, arc-shaped card holes are opened at both ends of the mounting block, the arc surfaces of the arc-shaped limiting card and the arc-shaped card hole and the torsion spring are arranged concentrically, and the arc-shaped limiting card is inserted into the inside of the arc-shaped card hole.

[0009] Furthermore, an adjustable armrest is fixedly installed on the front of the turntable, and arc-shaped anti-slip protrusions are arranged at equal intervals on the outer surface of the adjustable armrest.

[0010] Furthermore, the mounting mechanism includes side panels, which are mounted on the upper and lower ends of the back side of the base by bolts, a support frame is fixedly mounted on the back side of the side panel, an angle adjustment component is fixedly mounted on the rear side of the support frame, and a mounting component is fixedly mounted on the rear side of the angle adjustment component.

[0011] Furthermore, a support shaft is fixedly installed on the back side of the turntable, and the rear end of the support shaft is rotatably connected to the inner rear end of the arc frame.

[0012] Furthermore, the two groups of elastic limiting mechanisms are symmetrically arranged opposite to each other, and the outer corners of the base and the card frame are both arranged in arc shape.

[0013] Furthermore, the angle adjustment assembly includes a fixed plate, which is fixedly installed on the rear side of the support frame. The back side of the fixed plate is rotatably connected to a circular disc, the back side of the circular disc is fixedly connected to the mounting assembly, and one side of the back side of the circular disc is threadedly connected to a hand-tightening bolt, and the end of the hand-tightening bolt passes through the circular disc.

[0014] Furthermore, the back side of the fixing plate is provided with limiting holes arranged in a circular shape at equal intervals, and the ends of the hand-tightening bolts are inserted into the inner sides of the limiting holes.

[0015] Furthermore, the installation assembly includes a fixed block, which is fixedly installed in the middle of the back side of the disc, a base plate is fixedly installed on the back side of the fixed block, a clamping plate is fixedly installed on the upper end of the back side of the base plate, and the outer end of the clamping plate is threadedly connected with a hand-tightened screw.

[0016] Furthermore, the cardboard is arranged in an L shape, and the end of the hand-tightened screw passes through the cardboard and is fixedly installed with an anti-skid plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] Firstly, in the present invention, an elastic limiting mechanism is provided. When in use, the adjusting armrest is twisted to rotate the turntable, tighten the torsion spring and face the arc limit card outward, and then the sensor body is inserted into the card frame, the adjusting armrest is loosened, and the torsion spring is reset to drive the arc limit card to be inserted into the arc card hole to assist in the card connection and installation. When disassembling, twist the adjusting button handle to disengage the arc limit card. The arc limit card is arranged in concentric circles to ensure stable disassembly and assembly of the sensor body, so that the device can be disassembled and assembled quickly and stably.

[0019] Secondly, in the present invention, an installation mechanism is provided. When in use, the base plate and the clamping plate will be installed by sleeve-mounting the installation structure, and the hand-tightening screw is twisted to make the anti-skid plate fit in the fixed position. After installation, if the angle orientation of the sensor body needs to be adjusted, the hand-tightening bolt is twisted to disengage from the limiting hole, and the adjusting disk and the fixing disk are rotated. After the adjustment is completed, the bolt is tightened again, and it is clamped and fixed with the limiting hole. When disassembling, the hand-tightening screw can be loosened to separate the anti-skid plate, which is convenient and quick to install and adjust, and improves the adaptability and convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a rear view structure schematic diagram of the present invention;

[0022] Figure 3 It is a side view structural schematic diagram of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the sensor body in the disassembled state in the present invention;

[0024] Figure 5 It is a front structural schematic diagram of the installation mechanism in the present invention in a disassembled state;

[0025] Figure 6 It is a schematic diagram of the rear view structure of the installation mechanism in the present invention in a disassembled state;

[0026] Figure 7 It is a schematic diagram of the structure of the sensor body and the elastic clamping mechanism in the present invention;

[0027] Figure 8 It is a schematic diagram of the structure of the elastic clamping mechanism in the present invention.

[0028] In the figure: 1. base; 2. detection probe; 3. card frame; 4. sensor body; 5. elastic limit mechanism; 51. mounting block; 52. arc frame; 53. torsion spring; 54. turntable; 55. arc limit card; 56. arc card hole; 57. adjustment armrest; 58. support shaft; 6. mounting mechanism; 61. side plate; 62. support frame; 63. angle adjustment assembly; 631. fixing plate; 632. disc; 633. hand-tightening bolt; 634. limiting hole; 64. mounting assembly; 641. fixing block; 642. base plate; 643. card plate; 644. hand-tightening screw; 645. anti-slip sticker. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-Figure 8 In an embodiment of the present invention, a TMR sensor convenient for maintenance includes a base 1, a mounting mechanism 6 is mounted on the back of the base 1 by bolts, a card frame 3 is fixedly mounted on the front of the base 1, a sensor body 4 is plugged into the card frame 3, elastic limiting mechanisms 5 are fixedly mounted on the middle of both sides of the card frame 3, the sensor body 4 is mounted inside the card frame 3 by the elastic limiting mechanisms 5, and a detection probe 2 is fixedly connected to the bottom of the sensor body 4;

[0031] The elastic limiting mechanism 5 includes a mounting block 51 and an arc frame 52. The mounting block 51 is fixedly mounted in the middle of the front face of the elastic limiting mechanism 5. The arc frame 52 is fixedly mounted in the middle of the outer side of the card frame 3. A torsion spring 53 is fixedly mounted inside the arc frame 52. A rotating disk 54 is fixedly mounted at the front end of the torsion spring 53. An arc limiting card 55 is fixedly mounted on one side of the rotating disk 54. Arc-shaped card holes 56 are provided at both ends of the mounting block 51. The arc surfaces of the arc limiting card 55 and the arc card hole 56 are concentrically arranged with the torsion spring 53. The arc limiting card 55 is plugged into the inside of the arc card hole 56. The elastic limiting mechanism 5 includes a fixed block 641 and an arc frame 52. The fixed block 641 is in the middle of the front face. The arc frame 52 is in the middle of the outer side of the card frame 3, and there is a torsion spring 53 in the arc frame 52. The front end is a turntable 54, and there is an arc limit card 55 on one side of the turntable 54. Arc-shaped card holes 56 are set at both ends of the fixed block 641. The arc surface of the arc limit card 55, the arc card hole 56 and the torsion spring 53 are concentric circles. Its advantages are: through the elastic limiting mechanism 5, the turntable 54 is twisted to tighten the torsion spring 53, and the turntable 54 is loosened after inserting the sensor body 4. The torsion spring 53 is reset to allow the arc limit card 55 to be inserted into the arc card hole 56, so as to achieve fast and stable installation, and it is also convenient to operate during disassembly. The concentric circle setting ensures that the arc limit card 55 is stably inserted, which improves the efficiency and convenience of disassembly and assembly, and is beneficial to the inspection and maintenance of the sensor.

[0032] See also Figure 8 An adjusting armrest 57 is fixedly installed on the front of the turntable 54. The outer surface of the adjusting armrest 57 is provided with arc-shaped anti-skid protrusions at equal intervals. The adjusting armrest 57 provides a convenient force point for operating the turntable 54, allowing the user to twist the turntable 54 more easily and accurately. The arc-shaped anti-skid protrusions distributed at equal intervals greatly increase the friction of the adjusting armrest 57, preventing the hand from slipping during operation, thereby improving the stability and accuracy of the operation. Even when the hands are wet or oily, it can ensure that the turntable 54 is effectively twisted to achieve the installation or removal operation of the sensor.

[0033] See also Figure 5-Figure 6 The mounting mechanism 6 includes a side plate 61, which is mounted on the upper and lower ends of the back side of the base 1 by bolts. A support frame 62 is fixedly mounted on the back side of the side plate 61, and an angle adjustment component 63 is fixedly mounted on the rear side of the support frame 62. A mounting component 64 is fixedly mounted on the rear side of the angle adjustment component 63. The side plate 61 is mounted on the upper and lower ends of the back side of the base plate 642 by bolts. This connection method is stable and reliable, and is easy to disassemble and maintain. The support frame 62 on the back side of the side plate 61 provides a solid supporting foundation for subsequent components and ensures the stability of the overall structure. The setting of the angle adjustment component 63 increases the flexibility of installation, and can adjust the angle of the sensor according to actual needs to meet different detection scenarios and requirements. The mounting component 64 on the rear side allows the entire device to be easily connected and fixed to the external structure, thereby improving the convenience and versatility of installation.

[0034] See also Figure 7-Figure 8 A support shaft 58 is fixedly installed on the back of the turntable 54, and the rear end of the support shaft 58 is rotatably connected to the inner rear end of the arc frame 52. The support shaft 58 can assist in supporting and reinforcing the turntable 54, thereby improving the stability of the overall clamping installation of the device.

[0035] Please refer to 7- Figure 8 The two sets of elastic limiting mechanisms 5 are symmetrically and oppositely arranged. The external corners of the base 1 and the card frame 3 are both arranged in arc shapes. The two sets of symmetrically arranged elastic mechanisms can stably limit the card-mounted sensor body 4. At the same time, the outsides of the base 1 and the card frame 3 are both arc-shaped, which can reduce the overall corners of the device and improve the overall convenience and aesthetics of the device.

[0036] See also Figure 5-Figure 6 The angle adjustment component 63 includes a fixed plate 631, which is fixedly installed on the rear side of the support frame 62. The back of the fixed plate 631 is rotatably connected with a disk 632. The back of the disk 632 is fixedly connected to the mounting component 64. A hand-tightening bolt 633 is threadedly connected to one side of the back of the disk 632. The end of the hand-tightening bolt 633 penetrates the disk 632. The back of the fixed plate 631 is arranged in a circular ring with equal intervals to provide limiting holes 634. The end of the hand-tightening bolt 633 is inserted into the inner side of the limiting hole 634 to fix it. The disk 631 is fixed on the rear side of the support frame 62, and the circular disk 632 is rotatably connected to the fixed disk 631, which provides a basis for angle adjustment. The hand-tightening bolts 633 on the back of the circular disk 632 can be plugged into and matched with the limiting holes 634 arranged in a circular ring at equal intervals on the back of the fixed disk 631. The operation is simple and convenient. When the angle needs to be adjusted, loosen the hand-tightening bolts 633 to loosen them and rotate the circular disk 632. After the adjustment is completed, tighten the bolts and insert them into the limiting holes 634 to fix them. This can accurately and stably achieve angle adjustment to meet different usage requirements.

[0037] See also Figure 5-Figure 6The mounting assembly 64 includes a fixing block 641, which is fixedly mounted on the middle of the back of the disc 632. A substrate 642 is fixedly mounted on the back of the fixing block 641. A clamping plate 643 is fixedly mounted on the upper end of the back of the substrate 642. The outer end of the clamping plate 643 is threadedly connected with a hand-tightened screw 644. The clamping plate 643 is L-shaped. The end of the hand-tightened screw 644 passes through the clamping plate 643 and is fixedly mounted with an anti-slip plate 645. The fixing block 641 is located in the middle of the back of the disc 632, which ensures the stability of the connection with the disc 632, thereby providing stable support for the subsequent structure. The substrate 642 on the back of the fixing block 641 The card plate 643 at the upper end of the back side cooperates with each other. The L-shaped design of the card plate 643 enhances its ability to clamp and fix. The hand-tightened screw 644 threaded at the outer end of the card plate 643 is convenient for manual operation. By rotating the hand-tightened screw 644, the anti-slip plate 645 at the end can be tightly fitted with or separated from the installation position. When installation is required, tighten the hand-tightened screw 644, and the anti-slip plate 645 can provide strong friction to ensure a firm installation; when disassembling, rotate the screw in the opposite direction, and the anti-slip plate 645 will be out of contact, which is convenient and quick. This structure is simple and practical, and easy to operate, which greatly improves the efficiency and convenience of installation and disassembly.

[0038] The working principle of the present invention is as follows: by setting the elastic limiting mechanism 5, during the use of the device, the turntable 54 can be driven to rotate by twisting the adjusting armrest 57, and the torsion spring 53 can be tightened by the rotation of the turntable 54. At this time, the arc-shaped limiting card 55 rotates toward the outside, and the sensor body 4 is inserted into the inside of the card frame 3. When the sensor body 4 is installed, the adjusting armrest 57 is released, and the torsion spring 53 loses its limiting force and resets. The arc-shaped limiting card 55 can be inserted into the card frame 3 by resetting the torsion spring 53. To the inside of the arc-shaped card hole 56, so as to assist in the card connection and installation of the sensor body 4. When the sensor body 4 needs to be disassembled, it is only necessary to twist the adjusting button handle to drive the arc-shaped limit card 55 to disengage. When the arc-shaped limit card 55 is disengaged from the arc-shaped card hole 56, the sensor body 4 can be removed. The arc-shaped limit card 55, the arc-shaped card hole 56 and the torsion spring 53 are arranged in concentric circles, which can ensure that the arc-shaped limit card 55 is stably inserted into the inside of the limit hole 634, so that the device as a whole can quickly and stably disassemble and assemble the sensor body 4.

[0039] By setting up the installation mechanism 6, during the use of the device, the entire installation structure can be installed in the desired installation position through the base plate 642 and the clamping plate 643. At this time, by twisting the hand-tightening screw 644, the hand-tightening screw 644 can be rotated to drive the anti-skid sticker 645 to fit the desired installation and fixed position. After the installation is completed, if it is necessary to adjust the angle of the sensor body 4, the hand-tightening bolt 633 can be twisted to disengage from the limiting hole 634. The hand-tightening bolt 633 can be disengaged from the limiting hole 634, and the rotating adjustment disk 632 and the fixing disk 631 can be adjusted. To help adjust the angle direction of the sensor body 4, when the angle direction of the sensor body 4 is adjusted, you only need to twist the hand-tightening bolt 633 again. At this time, the hand-tightening bolt 633 is inserted into the limiting hole 634. The hand-tightening bolt 633 and the limiting hole 634 are mutually clamped and fixed, so that the angle direction of the sensor body 4 can be quickly adjusted. When the installation and adjustment are completed and it needs to be disassembled, you only need to loosen the hand-tightening screw 644 to drive the anti-slip plate 645 to move outward. The anti-slip plate 645 and the required installation position are separated from each other, which is convenient for the quick installation and adjustment of the device, can improve the overall adaptability of the device, and improve the overall convenience of use of the device.

Claims

1. A TMR sensor that is easy to maintain, characterized in that: It comprises a base, a mounting mechanism is installed on the back of the base by bolts, a card frame is fixedly installed on the front of the base, a sensor body is plugged into the card frame, elastic limiting mechanisms are fixedly installed on the middle of both sides of the card frame, the sensor body is installed in the card frame by the elastic limiting mechanism, and a detection probe is fixedly connected to the bottom of the sensor body; The elastic limiting mechanism includes a mounting block and an arc frame, the mounting block is fixedly mounted on the middle part of the front side of the elastic limiting mechanism, the arc frame is fixedly mounted on the middle part of the outer side of the card frame, a torsion spring is fixedly mounted inside the arc frame, a turntable is fixedly mounted on the front end of the torsion spring, an arc-shaped limiting card is fixedly mounted on one side of the turntable, arc-shaped card holes are opened at both ends of the mounting block, the arc surfaces of the arc-shaped limiting card and the arc-shaped card hole and the torsion spring are arranged concentrically, and the arc-shaped limiting card is inserted into the inside of the arc-shaped card hole.

2. A TMR sensor that is easy to maintain according to claim 1, characterized in that: An adjustable armrest is fixedly mounted on the front of the turntable, and arc-shaped anti-slip protrusions are arranged at equal intervals on the outer surface of the adjustable armrest.

3. A TMR sensor that is easy to maintain according to claim 1, characterized in that: The mounting mechanism includes side plates, which are mounted on the upper and lower ends of the back side of the base by bolts, a support frame is fixedly mounted on the back side of the side plate, an angle adjustment component is fixedly mounted on the rear side of the support frame, and a mounting component is fixedly mounted on the rear side of the angle adjustment component.

4. A TMR sensor that is easy to maintain according to claim 1, characterized in that: A support shaft is fixedly installed on the back side of the turntable, and the rear end of the support shaft is rotatably connected with the inner rear end of the arc frame.

5. The TMR sensor convenient for maintenance according to claim 1, characterized in that: The two groups of elastic limiting mechanisms are symmetrically arranged opposite to each other, and the outer corners of the base and the card frame are both arranged in arc shape.

6. The TMR sensor convenient for maintenance according to claim 3, characterized in that: The angle adjustment assembly includes a fixed plate, which is fixedly installed on the rear side of the support frame. A circular disc is rotatably connected to the back side of the fixed plate. The back side of the circular disc is fixedly connected to the mounting assembly. A hand-tightening bolt is threadedly connected to one side of the back side of the circular disc, and the end of the hand-tightening bolt passes through the circular disc.

7. A TMR sensor that is easy to maintain according to claim 6, characterized in that: The back side of the fixing plate is provided with limiting holes arranged in a circular ring shape with equal intervals, and the ends of the hand-tightening bolts are inserted into the inner sides of the limiting holes.

8. The TMR sensor convenient for maintenance according to claim 6, characterized in that: The mounting assembly comprises a fixing block, which is fixedly mounted on the middle of the back side of the disc, a base plate is fixedly mounted on the back side of the fixing block, a clamping plate is fixedly mounted on the upper end of the back side of the base plate, and a hand-tightened screw is threadedly connected to the outer end of the clamping plate.

9. The TMR sensor convenient for maintenance according to claim 8, characterized in that: The card plate is arranged in an L shape, and the end of the hand-tightened screw rod passes through the card plate and is fixedly mounted with an anti-skid sticker.

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