A sensor with an electromagnetic interference shielding layer

Abstract

The utility model provides a kind of sensor with anti-electromagnetic interference shielding layer, including base, the surface of base is annularly provided with three mounting holes, the top of base is rotatably installed with rotating seat by bearing, and the inside rotating seat is rotatably installed with shielding assembly, the shielding assembly includes back cover, the both sides of back cover are rotatably connected with rotating seat by pivot, the front end of back cover is threadedly sleeved with telescopic sleeve, and the front end of telescopic sleeve is fixed with mounting cover, the inside mounting cover is fixed with sensor probe, the inside telescopic sleeve is equipped with connecting wire, relative to prior art, the position of sensor probe distance back cover can be adjusted by the telescopic sleeve of shielding assembly, so that probe can be close to the detected object, simultaneously by pasting band and the pasting strip of telescopic sleeve bottom bonding, the length of telescopic sleeve can be locked, and the stability of sensor front end is maintained.

Description

Technical Field

[0001] This utility model relates to the field of sensor technology, specifically to a sensor with an anti-electromagnetic interference shielding layer. Background Technology

[0002] Electromagnetic sensors, also known as electromagnetic sensors or magnetoelectric sensors, are sensors that convert the measured physical quantity into an induced electromotive force. They are also called electromagnetic induction or electrodynamic sensors, primarily designed for speed-measuring gears. These sensors convert changes in the magnetic flux induced in a conductor into changes in the output signal. However, currently, electromagnetic field sensors lack adequate shielding mechanisms, making them susceptible to external interference during use. This leads to deviations in measurement results and reduces accuracy. Furthermore, the sensor's installation location limits the controllability of the distance between the sensor and the measurement point, further compromising ease of use.

[0003] Patent CN215991804U proposes an interference-resistant shielded electromagnetic field sensor. It features a convenient adjustable shielding mechanism. After the shielding tube is threaded onto the end of the mounting base, it provides a mounting position for the electromagnetic sensor and the rubber limiting block. The electromagnetic sensor is mounted to the end of the shielding tube through the cooperation between the rubber limiting block and the limiting cover. By replacing the shielding tube with different lengths, the distance between the electromagnetic sensor and the measurement point can be adjusted. The shielding tube effectively blocks external interference transmitted from other directions. By shortening the distance between the electromagnetic sensor and the detection point, the measurement accuracy of the sensor is effectively improved.

[0004] The shortcomings of the above solution are: it is inconvenient to adjust the position and length of the sensor, and the stability of the front-end sensor is poor after installing shielding tubes of different lengths. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a sensor with an anti-electromagnetic interference shielding layer to solve the problems mentioned in the background. This invention has a novel structure. The position of the sensor probe relative to the back cover can be adjusted by the telescopic sleeve of the shielding component, allowing the probe to be close to the object being detected. At the same time, the length of the telescopic sleeve can be locked by the adhesive tape attached to the adhesive strip at the bottom of the telescopic sleeve, thus maintaining the stability of the sensor front end.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A sensor with an anti-electromagnetic interference shielding layer includes a base. Three mounting holes are arranged in a ring on the surface of the base. A rotating seat is rotatably mounted on the top of the base via a bearing. A shielding assembly is rotatably mounted inside the rotating seat. The shielding assembly includes a rear cover. Both sides of the rear cover are rotatably connected to the rotating seat via a rotating shaft. A telescopic sleeve is threaded onto the front end of the rear cover, and a mounting cover is fixed to the front end of the telescopic sleeve. A sensor probe is fixed inside the mounting cover. A connecting wire is provided inside the telescopic sleeve, and one end of the connecting wire is fixedly connected to the tail end of the sensor probe. The other end of the connecting wire is fixedly connected to the tail end of the rear cover. A locking assembly is provided on the side plate of the rotating seat. The locking assembly includes a pin. A pin is slidably inserted into the bottom of the rotating seat, and a friction pad is fixed to the bottom of the pin. The friction pad is in frictional contact with the base.

[0007] Furthermore, the locking assembly also includes a fixing frame, which is fixed to the top of the rotating seat side plate. A connecting shaft is provided on the outer side of the rotatable connection between the rear cover and the rotating seat. A collar is sleeved on the outer end of the connecting shaft, and the collar is fixedly connected to the fixing frame.

[0008] Furthermore, the top of the fixing frame is threaded with a bolt, and the bottom of the bolt passes through a collar and presses against the connecting shaft.

[0009] Furthermore, a connecting plate is rotatably sleeved on the surface of the bolt, and the bottom of the connecting plate is fixedly connected to the top of the insert post.

[0010] Furthermore, the shielding assembly also includes a limiting ring, and multiple limiting rings are slidably sleeved on the surface of the end of the connecting line. A return spring is fixed to the top or bottom of the limiting ring, and the return spring is fixedly connected to the last section of the telescopic sleeve and the inner wall of the rear cover.

[0011] Furthermore, a telescopic bracket is fixed to the rear end of the mounting cover, and two pulleys are rotatably mounted on the bottom of the telescopic bracket.

[0012] Furthermore, a winding seat is fixed to the bottom of the rear cover, and a winding shaft is rotatably mounted inside the winding seat via a rotating shaft and a torsion spring. Adhesive tape is wound onto the winding shaft of the winding seat.

[0013] Furthermore, the front end of the adhesive tape is fixedly connected to the back of the mounting cover, and an adhesive strip is fixed to the bottom of the telescopic sleeve, with the adhesive tape adhering to the surface of the adhesive strip.

[0014] The beneficial effects of this utility model are: 1. This utility model adjusts the lateral angle by rotating the rotating seat laterally along the surface of the base, and adjusting the vertical angle by rotating the rear cover inside the rotating seat. After adjustment, the bolt is rotated, and the bolt passes through the collar to press and contact the connecting shaft. At this time, the connecting shaft can no longer rotate, and the vertical angle is locked. As the connecting plate moves downward, the insertion post passes through the rotating seat, and the friction pad rubs and contacts the base, braking the lateral rotation, thereby simultaneously locking the lateral and vertical angles of the sensor probe.

[0015] 2. This utility model limits the excess length of the connecting wire by using a limiting ring and a return spring, and stores it in a serpentine manner at the rear end of the shielding component to avoid the connecting wire from getting tangled. It can also reduce the contact between the connecting wire and the inner wall of the shielding component. The telescopic bracket can be freely adjusted in height, and the angle of the mounting cover and sensor probe can be adjusted in conjunction with the rotating seat. The bottom pulley facilitates its movement.

[0016] 3. This utility model has an exposed adhesive strip at the bottom of each section of the telescopic sleeve. As the mounting cover and sensor probe are pulled outward, the adhesive strip is unwound synchronously. By manually pressing the adhesive strip onto the adhesive strip, it fits the shape of the telescopic sleeve. The adhesion between the adhesive strip and the adhesive strip prevents the length of the telescopic sleeve from changing, while maintaining a stable distance between the mounting cover and the sensor probe and the back cover. When the mounting cover is retracted, the adhesive strip is retracted by a torsion spring rewinding seat.

[0017] 4. Compared with the prior art, this utility model can adjust the position of the sensor probe from the back cover by means of the telescopic sleeve of the shielding component, so that the probe can be close to the object being detected. At the same time, by attaching the adhesive tape to the adhesive strip at the bottom of the telescopic sleeve, the length of the telescopic sleeve can be locked and the stability of the front end of the sensor can be maintained. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall front structure of a sensor with an anti-electromagnetic interference shielding layer according to this utility model; Figure 2 This is a schematic diagram of the shielding component structure of a sensor with an anti-electromagnetic interference shielding layer according to the present invention; Figure 3 This is a schematic diagram of the internal structure of the back cover of a sensor with an anti-electromagnetic interference shielding layer according to this utility model. Figure 4 This is a schematic diagram of the locking assembly structure of a sensor with an anti-electromagnetic interference shielding layer according to the present invention; Figure 5 This is a schematic diagram of the connection of the adhesive strip for a sensor with an anti-electromagnetic interference shielding layer according to this utility model.

[0019] In the diagram: 1. Base; 11. Mounting hole; 2. Rotating seat; 21. Connecting shaft; 3. Shielding assembly; 31. Mounting cover; 32. Telescopic sleeve; 33. Telescopic bracket; 34. Pulley; 35. Back cover; 36. Connecting wire; 37. Limiting ring; 38. Return spring; 39. Adhesive strip; 4. Sensor probe; 5. Locking assembly; 51. Fixing bracket; 52. Bolt; 53. Collar; 54. Connecting plate; 55. Insert post; 56. Friction pad; 6. Adhesive tape; 61. Rewinding seat. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] Please see Figures 1 to 5 This utility model provides a technical solution: a sensor with an anti-electromagnetic interference shielding layer, including a base 1. Three mounting holes 11 are arranged in a ring on the surface of the base 1. A rotating seat 2 is rotatably mounted on the top of the base 1 via a bearing, and a shielding assembly 3 is rotatably mounted inside the rotating seat 2. The shielding assembly 3 includes a back cover 35, the two sides of which are rotatably connected to the rotating seat 2 via a rotating shaft. A telescopic sleeve 32 is threaded onto the front end of the back cover 35, and a mounting cover 31 is fixed to the front end of the telescopic sleeve 32. A sensor probe 4 is fixed inside the mounting cover 31. A connecting wire 36 is provided inside the telescopic sleeve 32, and one end of the connecting wire 36 is fixed to the tail end of the sensor probe 4. The connection is fixed, with the other end of the connecting line 36 fixedly connected to the tail end of the rear cover 35. The side plate of the rotating base 2 is provided with a locking component 5, which includes a pin 55. The bottom of the rotating base 2 is slidably inserted with the pin 55, and a friction pad 56 is fixed at the bottom of the pin 55. The friction pad 56 is in frictional contact with the base 1. When using the device, the base 1 is fixed in the designated position through the mounting hole 11. The horizontal and vertical angles of the sensor probe 4 are adjusted by the rotating base 2, and the angles are locked by the locking component 5. Then, the probe extension position is adjusted by the shielding component 3 to bring it close to the object being detected. The material of the outer shell of the shielding component 3 in this solution is the same as that of patent CN215991804U.

[0022] In this embodiment, the locking assembly 5 further includes a fixing frame 51. The fixing frame 51 is fixed to the top of the side plate of the rotating seat 2. A connecting shaft 21 is provided on the outer side of the rotatable connection between the rear cover 35 and the rotating seat 2. A collar 53 is sleeved on the outer end of the connecting shaft 21. The collar 53 is fixedly connected to the fixing frame 51. A bolt 52 is threaded into the top of the fixing frame 51, and the bottom of the bolt 52 passes through the collar 53 and presses against the connecting shaft 21. A connecting plate 54 is rotatably sleeved on the surface of the bolt 52, and the bottom of the connecting plate 54 is connected to the insertion post 55. The top is fixedly connected, the rotating seat 2 rotates laterally along the surface of the base 1 to adjust the lateral angle, the rear cover 35 rotates along the inside of the rotating seat 2 to adjust the vertical angle. After the adjustment is completed, the bolt 52 is rotated, and the bolt 52 passes through the collar 53 to press and contact the connecting shaft 21. At this time, the connecting shaft 21 can no longer rotate, and the vertical angle is locked. As the connecting plate 54 moves downward, the insertion post 55 passes through the rotating seat 2, and the friction pad 56 rubs and contacts the base 1 to brake the lateral rotation, thereby simultaneously locking the lateral and vertical angles of the sensor probe 4.

[0023] In this embodiment, the shielding component 3 further includes a limiting ring 37. Multiple limiting rings 37 are slidably sleeved on the surface of the tail end of the connecting wire 36. A return spring 38 is fixed to the top or bottom of the limiting ring 37. The return spring 38 is fixedly connected to the last section of the telescopic sleeve 32 and the inner wall of the rear cover 35. A telescopic bracket 33 is fixed to the rear end of the mounting cover 31, and two pulleys 34 are rotatably mounted on the bottom of the telescopic bracket 33. The excess length of the connecting wire 36 is limited by the limiting ring 37 and the return spring 38, and it is serpentinely stored at the rear end of the shielding component 3, which avoids the connecting wire 36 from getting messy. It can also reduce the contact between the connecting wire 36 and the inner wall of the shielding component 3. The height of the telescopic bracket 33 can be freely adjusted. It can be used with the rotating seat 2 to adjust the angle of the mounting cover 31 and the sensor probe 4. The pulleys 34 at the bottom facilitate its movement.

[0024] In this embodiment, a take-up seat 61 is fixed to the bottom of the rear cover 35, and a take-up shaft is rotatably mounted inside the take-up seat 61 via a rotating shaft and a torsion spring. An adhesive tape 6 is wound on the take-up shaft of the take-up seat 61. The front end of the adhesive tape 6 is fixedly connected to the back of the mounting cover 31. An adhesive strip 39 is fixed to the bottom of the telescopic sleeve 32, and the adhesive tape 6 is adhered to the surface of the adhesive strip 39. Each section of the telescopic sleeve 32 has an exposed adhesive strip 39 at the bottom. As the mounting cover 31 and the sensor probe 4 are pulled outward, the adhesive tape 6 is unwound synchronously. By manually pressing the adhesive tape 6 onto the adhesive strip 39, it fits and matches the shape of the telescopic sleeve 32. The adhesion between the adhesive tape 6 and the adhesive strip 39 makes the length of the telescopic sleeve 32 unchanged, while keeping the distance between the mounting cover 31 and the sensor probe 4 and the rear cover 35 stable. When the mounting cover 31 is retracted, the adhesive tape 6 is retracted by the torsion spring take-up seat 61.

[0025] When using the device, fix the base 1 in the designated position through the mounting hole 11. Adjust the lateral and vertical angles of the sensor probe 4 by rotating the base 2. Rotate the base 2 laterally along the surface of the base 1 to adjust the lateral angle. Rotate the back cover 35 inside the base 2 to adjust the vertical angle. After adjustment, rotate the bolt 52. The bolt 52 passes through the collar 53 and presses against the connecting shaft 21. At this time, the connecting shaft 21 can no longer rotate, and the vertical angle is locked. As the connecting plate 54 moves downward, the insertion post 55 passes through the rotating base 2, and the friction pad 56 rubs against the base 1 to brake the lateral rotation, thereby simultaneously locking the lateral and vertical angles of the sensor probe 4. Then, adjust the probe extension position by using the shielding assembly 3 to bring it close to the object being detected. Each section of the telescopic sleeve 32 has an exposed adhesive strip 39 at the bottom, which allows the probe to extend as the cover is installed. After the mounting cover 31 and sensor probe 4 are pulled outward, the excess length of the connecting wire 36 is limited by the limiting ring 37 and the return spring 38, and it is serpentinely stored at the rear end of the shielding component 3 to prevent the connecting wire 36 from getting tangled. This also reduces the contact between the connecting wire 36 and the inner wall of the shielding component 3. The telescopic bracket 33 can be freely adjusted in height, and the angle of the mounting cover 31 and sensor probe 4 can be adjusted in conjunction with the rotating seat 2. The bottom pulley 34 facilitates its movement. The adhesive tape 6 is unwound synchronously. The adhesive tape 6 is pressed onto the adhesive strip 39 by hand to match the shape of the telescopic sleeve 32. The adhesion between the adhesive tape 6 and the adhesive strip 39 makes the length of the telescopic sleeve 32 fixed, while keeping the distance between the mounting cover 31 and sensor probe 4 and the rear cover 35 stable. When the mounting cover 31 is retracted, the adhesive tape 6 is retracted by the torsion spring rewind seat 61.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sensor with an electromagnetic interference shielding layer, comprising a base (1), characterized in that: The base (1) has three mounting holes (11) arranged in a ring on its surface. A rotating seat (2) is rotatably mounted on the top of the base (1) via a bearing. A shielding assembly (3) is rotatably mounted inside the rotating seat (2). The shielding assembly (3) includes a back cover (35). The two sides of the back cover (35) are rotatably connected to the rotating seat (2) via a rotating shaft. A telescopic sleeve (32) is threaded onto the front end of the back cover (35). A mounting cover (31) is fixed to the front end of the telescopic sleeve (32). A sensor is fixed inside the mounting cover (31). The probe (4) has a connecting line (36) inside the telescopic sleeve (32), and one end of the connecting line (36) is fixedly connected to the tail end of the sensor probe (4), and the other end of the connecting line (36) is fixedly connected to the tail end of the rear cover (35). The side plate of the rotating seat (2) is provided with a locking component (5), which includes a pin (55). The bottom of the rotating seat (2) is slidably inserted with the pin (55), and the bottom of the pin (55) is fixed with a friction pad (56). The friction pad (56) is in frictional contact with the base (1).

2. A sensor with an anti-electromagnetic interference shielding layer according to claim 1, characterized in that: The locking assembly (5) also includes a fixing frame (51). The fixing frame (51) is fixed on the top of the side plate of the rotating seat (2). A connecting shaft (21) is provided on the outside of the rotating connection between the rear cover (35) and the rotating seat (2). A collar (53) is sleeved on the outer end of the connecting shaft (21). The collar (53) is fixedly connected to the fixing frame (51).

3. A sensor with an anti-electromagnetic interference shielding layer according to claim 2, characterized in that: The top of the fixing frame (51) is threaded with a bolt (52), and the bottom of the bolt (52) passes through the collar (53) and presses against the connecting shaft (21).

4. A sensor with an anti-electromagnetic interference shielding layer according to claim 3, characterized in that: A connecting plate (54) is rotatably sleeved on the surface of the bolt (52), and the bottom of the connecting plate (54) is fixedly connected to the top of the insert (55).

5. A sensor with an anti-electromagnetic interference shielding layer according to claim 1, characterized in that: The shielding assembly (3) also includes a limiting ring (37). Multiple limiting rings (37) are slidably sleeved on the end surface of the connecting line (36). A reset spring (38) is fixed at the top or bottom of the limiting ring (37). The reset spring (38) is fixedly connected to the last section of the telescopic sleeve (32) and the inner wall of the rear cover (35).

6. A sensor with an anti-electromagnetic interference shielding layer according to claim 5, characterized in that: The rear end of the mounting cover (31) is fixed with a telescopic bracket (33), and two pulleys (34) are rotatably mounted on the bottom of the telescopic bracket (33).

7. A sensor with an anti-electromagnetic interference shielding layer according to claim 1, characterized in that: The bottom of the rear cover (35) is fixed with a winding seat (61), and a winding shaft is rotatably installed inside the winding seat (61) via a rotating shaft and a torsion spring. Adhesive tape (6) is wound on the winding shaft of the winding seat (61).

8. A sensor with an anti-electromagnetic interference shielding layer according to claim 7, characterized in that: The front end of the adhesive tape (6) is fixedly connected to the back of the mounting cover (31), and the bottom of the telescopic sleeve (32) is fixed with an adhesive strip (39). The adhesive tape (6) is adhered to the surface of the adhesive strip (39).

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