A small cylindrical fiber optic sensor

Abstract

A small cylindrical fiber sensor relates to an improvement of a fiber sensor. Two mounting nuts are arranged on the sensing head, the right end of the sensing head is connected with the optical fiber, the right end of the optical fiber penetrates into the optical fiber mounting hole, and is butt jointed with the transmitting and receiving tube in the mounting hole. The clamping piece is inserted into the clamping hole to clamp and fix the optical fiber. The potentiometer and the positioning guide hole are sleeved and installed. The back surface of the circuit board is provided with a patch type indicator lamp. The right end of the circuit board is inserted into the light guide installation outlet cover. The power supply control line is electrically connected through the outlet hole on the right side of the light guide installation outlet cover and the circuit board. The left end of the main body outer tube is sleeved with the assembly connector. The right end of the main body outer tube is sleeved with the light guide installation outlet cover. It simplifies the layout of the fiber sensor shell, removes the special mounting structure, greatly reduces the volume of the fiber sensor main body outer tube, facilitates installation and wiring, improves installation efficiency, makes the product use more simple and convenient, reduces the use cost of the user as a whole, and expands the installation application scene.

Description

Technical Field

[0001] This utility model relates to an improvement of a photoelectric sensor, specifically an improvement of a fiber optic sensor. Background Technology

[0002] Photoelectric sensors have advantages such as fast response speed, high detection accuracy, and long detection distance, and are therefore widely used. Fiber optic amplifiers are also widely used because of their advantages such as small and diverse detection heads, high sensitivity and resolution, high detection accuracy, and wide range of applications.

[0003] Currently, fiber optic amplifiers on the market have complex external layouts and internal structures. In particular, the fiber optic installation and connection structures are not only very complex but also occupy a lot of space, making it impossible to miniaturize the overall structure. They also require specialized installation structures and mounting accessories, resulting in large size, complicated installation, and low cabling efficiency, which increases the overall cost for users. Furthermore, they cannot be used in places with limited installation space. Utility Model Content

[0004] To overcome the shortcomings of the existing technology, this utility model provides a small cylindrical fiber optic sensor. It simplifies the layout of the fiber optic sensor housing, optimizes its internal structure, simplifies the fiber optic installation and connection structure, uses a multi-layer PCB to reduce the circuit board area, and eliminates the need for a dedicated installation structure. This significantly reduces the volume of the fiber optic sensor's outer tube, making the outer diameter of the main body and the power control line very similar. It eliminates the need for dedicated installation space, facilitates installation and wiring, improves installation efficiency, makes the product simpler and more convenient to use, reduces the overall user cost, and expands the installation application scenarios.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a small cylindrical fiber optic sensor, comprising a sensing head 1, mounting nuts 2, an optical fiber 3, a fastener 4, an assembly connector 5, an optical fiber mounting hole 51, a fastening hole 52, a main body outer tube 6, an adjustment hole 61, a light guide mounting cover 7, an indicator light mounting hole 71, a cable outlet hole 72, a power control line 8, a circuit board 9, a transmitting and receiving tube 91, a potentiometer 92, and an indicator light 93. Two mounting nuts 2 are provided on the sensing head 1. The right end of the sensing head 1 is connected to the optical fiber 3, and the right end of the optical fiber 3 passes through the optical fiber mounting hole 51. The transmitting and receiving tubes 91 in section 3 are connected. The fastener 4 is inserted into the fastening hole 52 to secure the optical fiber. The transmitting and receiving tube 91 is inserted into the mounting hole 53 and electrically connected to the circuit board 9. A potentiometer 92 is provided on the back of the circuit board 9. The potentiometer 92 and the positioning guide hole 54 are fitted together. A surface-mount indicator light 93 is provided on the right side of the back of the circuit board 9. The right end of the circuit board 9 is inserted into the light guide mounting cable cover 7. The power control line 8 passes through the cable outlet hole 72 on the right side of the light guide mounting cable cover 7 and is electrically connected to the circuit board 9. The left end of the main body outer tube 6 is fitted with the assembly connector 5, and the right end of the main body outer tube 6 is fitted with the light guide mounting cable cover 7.

[0006] The assembly connector 5 is a rectangular prism with arc-shaped upper and lower ends. It has two horizontal circular fiber mounting holes 51 inside. There are four vertical through-holes 52 inside the two fiber mounting holes 51. The through-holes 52 intersect with the fiber mounting holes 51. The fastener 4 is inserted into the through-holes 52 to squeeze the outer sheath of the fiber 3 and fix the fiber. The right side of the rectangular prism on the left side of the assembly connector 5 is a circular step with the same outer diameter as the inner diameter of the outer tube 6 of the main body. It is used to limit the insertion position of the assembly connector 5 in the outer tube 6 of the main body. The right section of the assembly connector 5 is a small semi-cylindrical shape with a vertical through-hole 54 for mounting guide hole 54 of potentiometer 92, which fits and is installed with potentiometer 92 on the circuit board 9.

[0007] The light guide mounting cover 7 is made of light-guiding plastic material. The left section is cylindrical and has an indicator light mounting hole 71 on the left. The indicator light 93 is inserted and fixed through the indicator light mounting hole 71. After the indicator light 93 is flush with the recessed plane of the inner hole of the right section of the light guide mounting cover 7, it conducts and emits light.

[0008] The outer tube 6 of the main body is cylindrical, and its surface is provided with an adjustment hole 61. The potentiometer 92 is inserted and fixed from the inside of the adjustment hole 61 outward. The circular step in the middle section of the light guide mounting cover 7 is used to limit the position of the light guide mounting cover 7 inserted into the outer tube 6 of the main body.

[0009] It simplifies the layout of the fiber optic sensor housing, optimizes its internal structure, simplifies the fiber optic installation and connection structure, adopts a multi-layer PCB to reduce the circuit board area, and eliminates the dedicated installation structure, thereby significantly reducing the volume of the fiber optic sensor's main body tube. This makes the difference between the outer diameter of the main body tube and the power control line very small, eliminating the need for dedicated installation space, facilitating installation and wiring, improving installation efficiency, making the product simpler and more convenient to use, reducing the overall user cost, and expanding the installation application scenarios. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the external structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of this utility model; Figure 3 This is an exploded structural diagram of the central assembly connector 5, the main body outer tube 6, the light guide mounting cable cover 7, and the circuit board 9 of this utility model. Figure 4 This is a cross-sectional view of the assembly connector 5 of this utility model; Figure 5 This is a schematic diagram of the back of the circuit board 9 in this utility model; Figure 6 This is a cross-sectional view of the light guide mounting cable cover 7 in this utility model.

[0012] Explanation of reference numerals in the attached figures: 1. Sensor head; 2. Mounting nut; 3. Optical fiber; 4. Fastener; 5. Assembly connector; 6. Main body outer tube; 7. Adjustment hole; 8. Light guide mounting cable cover; 9. Power control line; 10. Circuit board; 11. Transmitter / receiver tube; 12. Potentiometer; 13. Indicator light; 14. Optical fiber mounting hole; 15. Fastening hole; 16. Mounting hole; 17. Positioning guide hole; 18. Light guide mounting cable cover; 19. Indicator light mounting hole; 10. Cable outlet hole. Detailed Implementation

[0013] See Figure 1-6As shown, the technical solution adopted in this specific embodiment is as follows: It includes a sensing head 1, mounting nuts 2, optical fiber 3, fastener 4, assembly connector 5, optical fiber mounting hole 51, fastening hole 52, main body outer tube 6, adjustment hole 61, light guide mounting cable cover 7, indicator light mounting hole 71, cable outlet hole 72, power control line 8, circuit board 9, transmitting and receiving tube 91, potentiometer 92, and indicator light 93. The sensing head 1 is characterized by having two mounting nuts 2 on it. The right end of the sensing head 1 is connected to the optical fiber 3, and the right end of the optical fiber 3 passes through the optical fiber mounting hole 51, connecting with the transmitting and receiving tube in the mounting hole 53. The receiving tube 91 is connected, and the fastener 4 is inserted into the fastening hole 52 to secure the optical fiber. The transmitting and receiving tube 91 is inserted into the mounting hole 53 and electrically connected to the circuit board 9. A potentiometer 92 is provided on the back of the circuit board 9. The potentiometer 92 and the positioning guide hole 54 are fitted together. A surface-mount indicator light 93 is provided on the right side of the back of the circuit board 9. The right end of the circuit board 9 is inserted into the light guide mounting cable cover 7. The power control line 8 passes through the cable outlet hole 72 on the right side of the light guide mounting cable cover 7 and is electrically connected to the circuit board 9. The left end of the main body outer tube 6 is fitted with the assembly connector 5, and the right end of the main body outer tube 6 is fitted with the light guide mounting cable cover 7.

[0014] The assembly connector 5 is a rectangular prism with arc-shaped upper and lower ends. It has two horizontal circular fiber mounting holes 51 inside. There are four vertical through-holes 52 inside the two fiber mounting holes 51. The through-holes 52 intersect with the fiber mounting holes 51. The fastener 4 is inserted into the through-holes 52 to squeeze the outer sheath of the fiber 3 and fix the fiber. The right side of the rectangular prism on the left side of the assembly connector 5 is a circular step with the same outer diameter as the inner diameter of the outer tube 6 of the main body. It is used to limit the insertion position of the assembly connector 5 in the outer tube 6 of the main body. The right section of the assembly connector 5 is a small semi-cylindrical shape with a vertical through-hole 54 for mounting guide hole 54 of potentiometer 92, which fits and is installed with potentiometer 92 on the circuit board 9.

[0015] The light guide mounting cover 7 is made of light-guiding plastic material. The left section is cylindrical and has an indicator light mounting hole 71 on the left. The indicator light 93 is inserted and fixed through the indicator light mounting hole 71. After the indicator light 93 is flush with the recessed plane of the inner hole of the right section of the light guide mounting cover 7, it conducts and emits light.

[0016] The outer tube 6 of the main body is cylindrical, and its surface is provided with an adjustment hole 61. The potentiometer 92 is inserted and fixed from the inside of the adjustment hole 61 outward. The circular step in the middle section of the light guide mounting cover 7 is used to limit the position of the light guide mounting cover 7 inserted into the outer tube 6 of the main body.

[0017] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A small cylindrical fiber optic sensor, comprising a sensing head (1), a mounting nut (2), an optical fiber (3), a fastener (4), an assembly connector (5), an optical fiber mounting hole (51), a fastening hole (52), a main body outer tube (6), an adjustment hole (61), a light guide mounting cover (7), an indicator light mounting hole (71), a wire outlet hole (72), a power control line (8), a circuit board (9), a transmitting and receiving tube (91), a potentiometer (92), and an indicator light (93), characterized in that: Two mounting nuts (2) are provided on the sensor head (1). The right end of the sensor head (1) is connected to the optical fiber (3). The right end of the optical fiber (3) is inserted into the optical fiber mounting hole (51) and connected to the transmitter and receiver tube (91) in the mounting hole (53). The fastener (4) is inserted from the fastening hole (52) to clamp and fix the optical fiber. The transmitter and receiver tube (91) is inserted from the mounting hole (53) and electrically connected to the circuit board (9). A potentiometer (92) is provided on the back of the circuit board (9). The potentiometer (92) and the positioning guide hole (54) are fitted together. A surface-mount indicator light (93) is provided on the right side of the back of the circuit board (9). The right end of the circuit board (9) is inserted into the light guide mounting cable cover (7). The power control line (8) passes through the cable outlet hole (72) on the right side of the light guide mounting cable cover (7) and is electrically connected to the circuit board (9). The left end of the main body outer tube (6) is fitted with the assembly connector (5). The right end of the main body outer tube (6) is fitted with the light guide mounting cable cover (7).

2. The small cylindrical fiber optic sensor according to claim 1, characterized in that: The fiber mounting hole (51) has four vertical through-holes (52) inside. The fastener (4) is inserted into the fastener (52) to press and fix the fiber (3).

3. The small cylindrical fiber optic sensor according to claim 1, characterized in that, The left side of the light guide mounting cover (7) is provided with an indicator light mounting hole (71), and the indicator light (93) is inserted and fixed through the indicator light mounting hole (71).

4. A small cylindrical fiber optic sensor according to claim 1, characterized in that, The outer tube (6) of the main body is cylindrical, and an adjustment hole (61) is provided on its surface. The potentiometer (92) is inserted and fixed outward from the adjustment hole (61).

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