Miniaturized displacement sensor

Abstract

The utility model relates to the technical field of displacement sensors, in particular to a miniaturized displacement sensor which comprises a machine body, a detection assembly, a first adjusting assembly, a second adjusting assembly and an installation assembly, the detection assembly is arranged on the inner side of the machine body, the second adjusting assembly is arranged on the inner side of the machine body, and the installation assembly is arranged on the inner side of the machine body. A mounting assembly is arranged on the outer side of the machine body; the detection assembly comprises a laser generator, a first connecting frame, a first reflecting mirror surface, a second connecting frame, a second reflecting mirror surface, a third connecting frame and a laser receiver; according to the utility model, a certain optical path length can be maintained through a refraction optical path, the packaging length of the sensor is reduced, the size of the device is reduced, and a detection path of the sensor is adjusted when the device is used in an environment where the whole device is inconvenient to adjust through fine adjustment of a laser path emission path, so that the environmental applicability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of displacement sensor technology, and in particular to a miniaturized displacement sensor. Background Technology

[0002] Displacement sensors, as core components in the field of precision measurement, are widely used in industrial automation, aerospace, and consumer electronics. Traditional displacement sensors typically employ the laser triangulation principle, with a typical structure consisting of a linear optical path system comprised of a laser emitter, a reflector group, and a receiver. To ensure the measurement range, displacement sensors require a linear optical path layout, resulting in a positive correlation between the sensor package length and the optical path length. For example, a sensor with a typical range of 50mm generally has a physical length exceeding 120mm and a volume of 80×40×30mm³ or more. This design severely limits its installation in compact spaces such as robot joints and the cavities of micro-devices, creating a contradiction between "large sensor size and small installation space."

[0003] Therefore, to address the aforementioned issues, a miniaturized displacement sensor is proposed. By refraction of the optical path, the sensor's packaging length can be reduced while maintaining a certain optical path length, thus decreasing the device's size. Furthermore, by fine-tuning the laser emission path, the sensor's detection path can be adjusted in environments where it is inconvenient to adjust the entire device, thereby improving the device's environmental adaptability. Utility Model Content

[0004] In order to overcome the problem that the linear optical path layout of traditional displacement sensors in daily use leads to a positive correlation between the sensor package length and the optical path length, which severely limits the installation and application of the device in compact spaces.

[0005] The technical solution of this utility model is as follows: a miniaturized displacement sensor, comprising a body, a detection component, a first adjustment component, a second adjustment component, and a mounting component. The detection component is disposed on the inner side of the body, the second adjustment component is disposed on the inner side of the body, and the mounting component is disposed on the outer side of the body. The detection component includes a laser generator, a first connecting frame, a first reflecting mirror, a second connecting frame, a second reflecting mirror, a third connecting frame, and a laser receiver. The laser generator is disposed on the inner side of the body, the first connecting frame is disposed on the inner side of the body, a first reflecting mirror is disposed on one side of the first connecting frame, the second connecting frame is disposed on the inner side of the body, a second reflecting mirror is disposed on one side of the second connecting frame, and the third connecting frame is disposed on the inner side of the body, with a laser receiver disposed on one side of the third connecting frame.

[0006] Preferably, a laser beam is emitted by activating the laser emitter. The laser beam is reflected by the first reflecting mirror to the second reflecting mirror, and then reflected again by the second reflecting mirror to exit the device and be directed at the object being measured. The laser receiver is used to receive the beam reflected back to the sensor from the object being measured. The laser beam is refracted by the reflecting mirror and then emitted. This method can reduce the packaging length of the sensor and the size of the device while maintaining a certain optical path length. By linearly moving and adjusting the angle of the first, second, and third connecting frames, the laser emission path can be finely adjusted according to the actual detection environment and the object being detected. This allows for adjustment of the sensor's detection path in environments where it is inconvenient to adjust the entire device, thereby improving the device's environmental adaptability.

[0007] Preferably, the first adjustment component includes a first fixed frame, a first micro motor, and a first threaded rod. The first fixed frame is provided on the inner side of the machine body, the first micro motor is provided on the inner side of the first fixed frame, and the first threaded rod is provided at the output end of the first micro motor.

[0008] Preferably, the first adjustment component further includes a first movable frame, a second micro motor, and a first rotating shaft. The first movable frame is provided on the outer side of the first threaded rod, and the first movable frame and the first threaded rod are threadedly connected. The second micro motor is provided on the inner side of the first movable frame, and the first rotating shaft is provided at the output end of the second micro motor. The first rotating shaft and the first connecting frame are connected to each other.

[0009] Preferably, the first adjustment component further includes a third micro motor, a second threaded rod, a second movable frame, a fourth micro motor, and a second rotating shaft. The third micro motor is disposed below the first fixed frame, and the output end of the third micro motor is provided with the second threaded rod. The second threaded rod and the second movable frame are threadedly connected. The second movable frame is disposed on the outer side of the second threaded rod, and the fourth micro motor is disposed on the inner side of the second movable frame. The output end of the fourth micro motor is provided with the second rotating shaft, and the second rotating shaft and the second connecting frame are connected to each other.

[0010] Preferably, the second adjustment component includes a second fixed frame, a fifth micro motor, a third threaded rod, a third movable frame, a sixth micro motor, and a third rotating shaft. The second fixed frame is located inside the machine body, the fifth micro motor is located below the second fixed frame, the output end of the fifth micro motor is provided with the third threaded rod, the third movable frame is located outside the third threaded rod, the third movable frame and the third threaded rod are threadedly connected, the sixth micro motor is located inside the third movable frame, the output end of the sixth micro motor is provided with the third rotating shaft, and the third rotating shaft and the third connecting frame are interconnected.

[0011] Preferably, the mounting assembly includes a mounting plate, a seventh micro motor, and a worm gear. The mounting plate is located on the outside of the machine body, the seventh micro motor is located on one side of the mounting plate, and the worm gear is located at the output end of the seventh micro motor.

[0012] Preferably, the mounting assembly also includes a worm gear, a connecting rod, and a mounting bracket. A worm gear is provided on one side of the mounting plate, and the worm gear is meshed with a worm. A connecting rod is provided on one side of the worm gear, and a mounting bracket is provided at one end of the connecting rod. The mounting bracket is connected to the machine body.

[0013] The beneficial effects of this utility model are:

[0014] The laser emitter emits a laser beam, which is reflected by a first reflector to a second reflector. The laser beam is then reflected again by the second reflector and exits the device, heading towards the object being measured. The laser receiver receives the beam reflected back to the sensor from the object. The laser beam is refracted by the reflectors and then emitted. This allows for a reduction in the sensor's packaging length and device size while maintaining a certain optical path length. By linearly moving and adjusting the angles of the first, second, and third connecting frames, the laser emission path can be finely adjusted according to the actual detection environment and the object being detected. This allows for adjustment of the sensor's detection path in environments where it is inconvenient to adjust the entire device, thus improving the device's environmental adaptability. Attached Figure Description

[0015] Figure 1 The diagram shown is a three-dimensional structural schematic of the miniaturized displacement sensor of this utility model.

[0016] Figure 2 The diagram shown is a first cross-sectional view of the miniaturized displacement sensor of this utility model.

[0017] Figure 3 The diagram shown is a second cross-sectional view of the miniaturized displacement sensor of this utility model.

[0018] Figure 4 The diagram shown is a third cross-sectional view of the miniaturized displacement sensor of this utility model.

[0019] Figure 5 The diagram shown is a fourth cross-sectional view of the miniaturized displacement sensor of this utility model.

[0020] Figure 6 The diagram shown is a partial three-dimensional structural schematic of the miniaturized displacement sensor of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Body; 101. Laser generator; 102. First connecting frame; 103. First reflecting mirror; 104. Second connecting frame; 105. Second reflecting mirror; 106. Third connecting frame; 107. Laser receiver; 201. First fixing frame; 202. First micro motor; 203. First threaded rod; 204. First movable frame; 205. Second micro motor; 206. First rotating shaft; 207. Third micro motor; 208. Second threaded rod; 209. Second movable frame; 210. Fourth micro motor; 211. Second rotating shaft; 301. Second fixed frame; 302. Fifth micro motor; 303. Third threaded rod; 304. Third movable frame; 305. Sixth micro motor; 306. Third rotating shaft; 401. Mounting plate; 402. Seventh micro motor; 403. Worm gear; 404. Worm wheel; 405. Connecting rod; 406. Mounting frame. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please see Figure 1 , Figure 2 and Figure 3 This utility model provides an embodiment of a miniaturized displacement sensor, including a body 1, a detection component, a first adjustment component, a second adjustment component, and a mounting component. The detection component is disposed on the inner side of the body 1, the second adjustment component is disposed on the inner side of the body 1, and the mounting component is disposed on the outer side of the body 1. The detection component includes a laser generator 101, a first connecting frame 102, a first reflecting mirror 103, a second connecting frame 104, a second reflecting mirror 105, a third connecting frame 106, and a laser receiver 107. The laser generator 101 is disposed on the inner side of the body 1, the first connecting frame 102 is disposed on the inner side of the body 1, the first reflecting mirror 103 is disposed on one side of the first connecting frame 102, the second connecting frame 104 is disposed on the inner side of the body 1, the second reflecting mirror 105 is disposed on one side of the second connecting frame 104, the third connecting frame 106 is disposed on the inner side of the body 1, and the laser receiver 107 is disposed on one side of the third connecting frame 106.

[0024] Please see Figure 4 , Figure 5 and Figure 6In this embodiment, the first adjustment component includes a first fixed frame 201, a first micro motor 202, and a first threaded rod 203. The first fixed frame 201 is disposed on the inner side of the machine body 1, and the first micro motor 202 is disposed on the inner side of the first fixed frame 201. The output end of the first micro motor 202 is provided with the first threaded rod 203. The first adjustment component also includes a first movable frame 204, a second micro motor 205, and a first rotating shaft 206. The first movable frame 204 is disposed on the outer side of the first threaded rod 203. The first movable frame 204 and the first threaded rod 203 are connected. The rod 203 is threaded. A second micro motor 205 is provided on the inner side of the first movable frame 204. A first rotating shaft 206 is provided at the output end of the second micro motor 205. The first rotating shaft 206 is connected to the first connecting frame 102. The first adjustment assembly also includes a third micro motor 207, a second threaded rod 208, a second movable frame 209, a fourth micro motor 210, and a second rotating shaft 211. The third micro motor 207 is provided below the first fixed frame 201. A second threaded rod 208 is provided at the output end of the third micro motor 207. The first threaded rod 208 and the second movable frame 209 are threaded together. The second movable frame 209 is provided on the outer side of the second threaded rod 208, and the fourth micro motor 210 is provided on the inner side of the second movable frame 209. The output end of the fourth micro motor 210 is provided with a second rotating shaft 211. The second rotating shaft 211 and the second connecting frame 104 are connected to each other. In use, the first threaded rod 203 is rotated by starting the first micro motor 202, which in turn drives the first movable frame 204 to move up and down. The first movable frame 204 is moved up and down by starting the second micro motor 205. The rotation of the first shaft 206 drives the first connecting frame 102 to rotate, thereby enabling linear movement and angle adjustment of the first reflective mirror 103. The rotation of the third micro motor 207 drives the second threaded rod 208 to rotate, which in turn drives the second moving frame 209 to move up and down. The rotation of the fourth micro motor 210 drives the second shaft 211 to rotate, which in turn drives the second connecting frame 104 to rotate, thereby enabling linear movement and angle adjustment of the second reflective mirror 105.

[0025] The second adjustment assembly includes a second fixed frame 301, a fifth micro motor 302, a third threaded rod 303, a third movable frame 304, a sixth micro motor 305, and a third rotating shaft 306. The second fixed frame 301 is located inside the machine body 1. The fifth micro motor 302 is located below the second fixed frame 301. The output end of the fifth micro motor 302 is provided with the third threaded rod 303. The third movable frame 304 is located outside the third threaded rod 303. The third movable frame 304 and the third threaded rod 303 are threadedly connected. A sixth micro motor 305 is installed inside the three movable frames 304. A third rotating shaft 306 is installed at the output end of the sixth micro motor 305. The third rotating shaft 306 and the third connecting frame 106 are interconnected. In use, the fifth micro motor 302 is activated to rotate the third threaded rod 303, which in turn moves the third movable frame 304 up and down. The sixth micro motor 305 is activated to rotate the third rotating shaft 306, which in turn rotates the third connecting frame 106, thus moving the frame up and down. The position and angle of the laser receiver 107 are adjustable. The mounting assembly includes a mounting plate 401, a seventh micro motor 402, and a worm gear 403. The mounting plate 401 is located on the outside of the body 1. The seventh micro motor 402 is located on one side of the mounting plate 401. The worm gear 403 is located at the output end of the seventh micro motor 402. The mounting assembly also includes a worm wheel 404, a connecting rod 405, and a mounting bracket 406. The worm wheel 404 is located on one side of the mounting plate 401. The worm wheel 404 and the worm gear 403 are meshed and connected. A connecting rod 405 is provided on one side, and a mounting bracket 406 is provided at one end of the connecting rod 405. The mounting bracket 406 is connected to the body 1. In use, the sensor is installed through the mounting plate 401. The seventh micro motor 402 is started to drive the worm gear 403 to rotate. The rotation of the worm gear 403 drives the worm wheel 404 to rotate. The rotation of the worm wheel 404 drives the connecting rod 405 to rotate. The rotation of the connecting rod 405 drives the mounting bracket 406 to rotate, thereby allowing the angle of the body 1 to be rotated and adjusted.

[0026] During operation, the miniaturized displacement sensor of this invention first achieves a reduction in package size through optimized optical path layout. The core of the device is the detection component, whose laser generator 101 emits a laser beam that is refracted twice by the first reflecting mirror 103 and the second reflecting mirror 105 before exiting the body 1, forming a non-linear optical path. Specifically, the laser generator 101 is fixed inside the body 1, and the emitted laser beam first strikes the first reflecting mirror 103 on the first connecting frame 102, and after reflection, it turns to the second reflecting mirror 105 on the second connecting frame 104, and after refraction, forms a measuring beam that is directed toward the object being measured. The laser reflected from the surface of the object being measured is captured by the laser receiver 107 on the third connecting frame 106. This refractive optical path design shortens the physical package length while maintaining the equivalent optical path. Through the linear movement and angle adjustment functions of the first connecting frame 102, the second connecting frame 104, and the third connecting frame 106, dynamic fine-tuning of the laser emission path can be achieved to adapt to complex installation environments.

[0027] To achieve precise control of the optical path, the equipment is equipped with a dual-adjustment component system. The first adjustment component carries a first threaded rod 203 driven by a first micro motor 202 via a first fixed frame 201, which drives a first moving frame 204 to move vertically. Inside the first moving frame 204, a second micro motor 205 drives a first connecting frame 102 to rotate via a first rotating shaft 206, achieving joint adjustment of the position and angle of the first reflecting mirror 103. Similarly, a second threaded rod 208 driven by a third micro motor 207 controls the lifting and lowering of the second moving frame 209, and a fourth micro motor 210 drives the second connecting frame 104 to rotate via a second rotating shaft 211, completing the attitude adjustment of the second reflecting mirror 105. The second adjustment component drives a third threaded rod 303 via a fifth micro motor 302, causing the laser receiver 107 on the third moving frame 304 to move vertically, and a sixth micro motor 305 achieves receiver angle compensation via a third rotating shaft 306. This three-stage adjustment mechanism allows the laser emission path to be adjusted within a certain range, improving the accuracy of the light spot position and effectively solving the problem of optical path alignment in confined spaces.

[0028] External mounting components enhance environmental adaptability. The mounting plate 401 is bolted to the application environment, and the seventh micro motor 402 drives the worm gear 403 to rotate, which in turn drives the meshing worm wheel 404 to rotate. Through the connecting rod 405, the mounting frame 406 carries the machine body 1 to achieve rotational adjustment. This worm wheel 404 and worm gear 403 mechanism has a self-locking characteristic to ensure the stability of angle positioning. In actual use, the user can first roughly adjust the orientation of the machine body 1 through the mounting frame 406, and then use the internal adjustment components to finely calibrate the optical path parameters. For example, when installed inside the robot joint, the synergistic effect of external rotation and internal mirror adjustment can make the measuring beam accurately aligned with the rotation axis, avoiding the installation errors caused by the structural limitations of traditional sensors.

[0029] Through the above steps, the laser emitter is activated to emit a laser beam. The laser beam is reflected by the first reflecting mirror 103 to the second reflecting mirror 105, and then reflected by the second reflecting mirror 105 out of the body 1 and towards the object being measured. The laser receiver 107 is used to receive the beam reflected back to the sensor from the object being measured. The laser beam is refracted by the reflecting mirror and then emitted. While maintaining a certain optical path length, the packaging length of the sensor can be reduced, and the size of the device can be reduced. By linearly moving and adjusting the angle of the first connecting frame 102, the second connecting frame 104 and the third connecting frame 106, the laser path can be finely adjusted according to the actual detection environment and the object being detected. This allows for adjustment of the sensor's detection path in environments where it is inconvenient to adjust the entire device, thereby improving the environmental adaptability of the device.

[0030] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A miniaturized displacement sensor, comprising an organism (1), characterized in that: It also includes a detection component, a first adjustment component, a second adjustment component, and a mounting component. The detection component is located on the inner side of the body (1), the second adjustment component is located on the inner side of the body (1), and the mounting component is located on the outer side of the body (1). The detection component includes a laser generator (101), a first connecting frame (102), a first reflecting mirror (103), a second connecting frame (104), a second reflecting mirror (105), a third connecting frame (106), and a laser receiver (107). A laser generator (101) is provided on the inner side of the body (1). A first connecting frame (102) is provided on the inner side of the body (1). A first reflecting mirror (103) is provided on one side of the first connecting frame (102). A second connecting frame (104) is provided on the inner side of the body (1). A second reflecting mirror (105) is provided on one side of the second connecting frame (104). A third connecting frame (106) is provided on the inner side of the body (1). A laser receiver (107) is provided on one side of the third connecting frame (106).

2. The miniaturized displacement sensor according to claim 1, characterized in that: The first adjustment component includes a first fixed frame (201), a first micro motor (202) and a first threaded rod (203). The first fixed frame (201) is provided on the inner side of the body (1), the first micro motor (202) is provided on the inner side of the first fixed frame (201), and the first threaded rod (203) is provided at the output end of the first micro motor (202).

3. A miniaturized displacement sensor according to claim 2, characterized in that: The first adjustment assembly also includes a first movable frame (204), a second micro motor (205), and a first rotating shaft (206). The first movable frame (204) is provided on the outer side of the first threaded rod (203). The first movable frame (204) and the first threaded rod (203) are threadedly connected. The second micro motor (205) is provided on the inner side of the first movable frame (204). The output end of the second micro motor (205) is provided with the first rotating shaft (206). The first rotating shaft (206) and the first connecting frame (102) are interconnected.

4. A miniaturized displacement sensor according to claim 3, characterized in that: The first adjustment assembly also includes a third micro motor (207), a second threaded rod (208), a second movable frame (209), a fourth micro motor (210), and a second rotating shaft (211). The third micro motor (207) is located below the first fixed frame (201). The output end of the third micro motor (207) is provided with the second threaded rod (208). The second threaded rod (208) is threadedly connected to the second movable frame (209). The second movable frame (209) is located on the outside of the second threaded rod (208). The fourth micro motor (210) is located on the inside of the second movable frame (209). The output end of the fourth micro motor (210) is provided with the second rotating shaft (211). The second rotating shaft (211) is connected to the second connecting frame (104).

5. A miniaturized displacement sensor according to claim 1, characterized in that: The second adjustment assembly includes a second fixed frame (301), a fifth micro motor (302), a third threaded rod (303), a third movable frame (304), a sixth micro motor (305), and a third rotating shaft (306). The second fixed frame (301) is provided on the inner side of the body (1). The fifth micro motor (302) is provided below the second fixed frame (301). The output end of the fifth micro motor (302) is provided with the third threaded rod (303). The third movable frame (304) is provided on the outer side of the third threaded rod (303). The third movable frame (304) and the third threaded rod (303) are threadedly connected. The sixth micro motor (305) is provided on the inner side of the third movable frame (304). The output end of the sixth micro motor (305) is provided with the third rotating shaft (306). The third rotating shaft (306) and the third connecting frame (106) are connected to each other.

6. A miniaturized displacement sensor according to claim 1, characterized in that: The mounting components include a mounting plate (401), a seventh micro motor (402), and a worm gear (403). The mounting plate (401) is provided on the outside of the body (1). The seventh micro motor (402) is provided on one side of the mounting plate (401), and the worm gear (403) is provided at the output end of the seventh micro motor (402).

7. A miniaturized displacement sensor according to claim 6, characterized in that: The mounting assembly also includes a worm gear (404), a connecting rod (405), and a mounting bracket (406). A worm gear (404) is provided on one side of the mounting plate (401), and the worm gear (404) and the worm (403) are meshed together. A connecting rod (405) is provided on one side of the worm gear (404), and a mounting bracket (406) is provided at one end of the connecting rod (405). The mounting bracket (406) and the machine body (1) are connected to each other.

Images