Light guide structure preventing shedding

Abstract

The application discloses a light guide structure preventing falling, relates to the technical field of light guide structures of fans, and comprises a fan, a panel body is fixedly connected to one side of the fan, an installation hole is formed in one side of the panel, a flexible light guide optical fiber is connected through the inside of the installation hole, and a sheet metal part is fixedly connected to the other side of the fan. The light guide structure preventing falling is connected with the flexible light guide optical fiber and an optical fiber tail buckle and a circuit board card seat, the circuit board card seat is fixed to a circuit board body through a clamping mechanism, a guide mechanism on the top of an LED lamp on the circuit board body is used for guiding the light of the LED lamp on the circuit board body into the flexible light guide optical fiber, thereby completing light guide, and the light guide structure can be prevented from being separated from the fan under the action of the clamping mechanism, the flexible light guide optical fiber can be conveniently removed through a tripping mechanism, and a buffer mechanism absorbs the vibration generated by the fan, thereby further improving the anti-falling effect of the light guide structure.

Description

Technical Field

[0001] This invention relates to the field of light guide structure technology for fans, specifically a light guide structure to prevent detachment. Background Technology

[0002] The light guiding mechanism on the fan is mainly used to guide the LED light from the circuit board into the optical fiber. The light-emitting unit is usually an LED, mounted on the circuit board, with a light-emitting surface on the side away from the axis to emit light. The light guide element is generally made of materials such as a light guide block or optical fiber. The light guide block can be embedded in the light-transmitting opening of the fan blade, corresponding to the light-emitting surface of the LED. If it is an optical fiber, one end needs to be close to the LED light source, while the other end can be positioned as needed. The light entering the light guide element is transmitted using the principle of total internal reflection within the light guide element. Taking optical fiber as an example, an optical fiber consists of a core with a high refractive index and a cladding with a low refractive index. When light propagates in the core, as long as the angle of incidence meets certain conditions, the light will undergo total internal reflection at the interface between the core and the cladding, thus propagating along the optical fiber axis.

[0003] As disclosed in utility model publication CN205478404U, a fan structure uses a flexible optical fiber light guide strip to emit point light from an LED lamp as a line, resulting in a fan structure with good lighting effect and ideal decorative effect. In addition, a positioning light shield is used to position the ends of the LED lamp and the flexible optical fiber light guide strip to ensure the stability of the product structure. The positioning light shield can also block the light from the LED lamp to prevent the formation of local bright spots, so that all the light emitted by the LED lamp is directed towards the end of the flexible optical fiber light guide strip, and all the light is conducted into the flexible optical fiber light guide strip, so that the entire flexible optical fiber light guide strip is uniformly guided to form a halo, further improving the fan's lighting effect and decorative effect.

[0004] In the above-mentioned solution, the light guide structure connects the flexible optical fiber light guide strip to the point light source of the LED lamp, and then guides the light source of the LED lamp into the fan. However, the end of the flexible optical fiber light guide strip connected to the LED lamp is only connected by an interference fit without effective limiting. Since the fan rotates at a high speed, it will generate a large vibration. Under high-frequency vibration, the parts that rely solely on the interference fit are at risk of falling off, which will lead to the failure of the light guide structure. Furthermore, under high-frequency vibration, the parts connected to the LED lamp are prone to collision with it, causing damage to the LED lamp. The vibration of the connector and the fan will also affect the stability of the connection. Summary of the Invention

[0005] The purpose of this invention is to provide a light guide structure that prevents detachment, thereby solving the problem mentioned in the background art. Existing light guide structures connect a flexible optical fiber light guide strip to the point light source of an LED lamp, then guide the LED light source into a fan. However, the connection between the flexible optical fiber light guide strip and the LED lamp is only achieved through an interference fit, without effective limiting. Because the fan rotates at high speed, it generates significant vibration. Under high-frequency vibration, the interference-fitted parts are at risk of detaching, leading to the failure of the light guide structure. Furthermore, under high-frequency vibration, the components connected to the LED lamp are prone to collision, causing damage to the LED lamp. Vibration of the connector and the fan also affects the stability of the connection.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a light guide structure to prevent detachment, comprising a fan, a panel body fixedly connected to one side of the fan, and a mounting hole provided on one side of the panel, through which a flexible light guide fiber is connected; a sheet metal part fixedly connected to the other side of the fan; a circuit board body fixedly connected to the top of the sheet metal part by bolts; an LED light mounted on one side of the top of the circuit board body; one end of the flexible light guide fiber located at the top of the LED light; a guiding mechanism provided at the top of the LED light; and the flexible light guide fiber... The other end of the optical fiber is fixedly connected to a panel clip via ultrasonic heat fusion. The diameter of the panel clip is larger than the diameter of the mounting hole on the panel body. The end of the flexible optical fiber away from the panel clip is fixedly connected to an optical fiber tail clip via ultrasonic heat fusion. A locking mechanism is provided on the outside of the optical fiber tail clip, and the locking mechanism includes a circuit board holder that penetrates through the optical fiber tail clip. The bottom of the optical fiber tail clip is a conical surface, and the top of the conical surface is provided with a stepped surface. A release mechanism is provided inside the circuit board holder. Buffer mechanisms are provided at the bottom of the circuit board holder and inside the optical fiber tail clip.

[0007] Furthermore, the guiding mechanism includes a light guide component sleeved on the top of the LED lamp, and a limiting pin is fixedly connected to the top of the light guide component, and the top of the limiting pin is conical.

[0008] Furthermore, the bottom of the circuit board holder is provided with two sets of connecting sleeves, and the two sets of connecting sleeves are distributed at equal angles about the central axis of the fiber optic tail buckle. Multiple sets of conical rings are fixedly connected to the outer side of the connecting sleeves, and the multiple sets of conical rings are distributed at equal intervals on the outer side of the connecting sleeves. Multiple sets of conical grooves matching the conical rings are opened inside the circuit board body. Multiple sets of through grooves are opened at the bottom of the fiber optic tail buckle, and the multiple sets of through grooves are distributed at equal angles about the central axis of the fiber optic tail buckle. A limiting ring is fixedly connected to the top of the fiber optic tail buckle, and the bottom of the limiting ring abuts against the top of the circuit board holder.

[0009] Furthermore, the outer side of the connecting sleeve has multiple sets of deformation grooves, and the deformation grooves are rectangular in shape. The bottom of the inner side of the connecting sleeve has a tapered hole, and a positioning pin is connected through the inside of the connecting sleeve. The bottom of the positioning pin is fixed to the sheet metal part, and the top of the positioning pin is conical.

[0010] Furthermore, the tripping mechanism includes cavities on both sides of the top of the circuit board holder, a piston rod is slidably connected inside the cavity, a pressure plate is fixedly connected to the top of the piston rod, a spring a is abutted against the bottom of the pressure plate, the bottom of the spring a abuts against the circuit board holder, and the inner side of the spring a is sleeved with the piston rod.

[0011] Furthermore, a connecting tube is connected to one side of the cavity, the outer side of the connecting tube is fixed to the circuit board holder, one end of the connecting tube is connected to an airbag, the outer side of the airbag is fixed to the inner side of the circuit board holder, and the inner side of the airbag abuts against multiple sets of connecting plates, and the connecting plates are arc-shaped.

[0012] Furthermore, a push rod is fixedly connected to one side of the connecting plate. The push rod is rectangular in shape, and one end of the push rod is slidably connected to the circuit board holder. A spring b is sleeved on the outside of the push rod.

[0013] Furthermore, one end of the spring b abuts against the connecting plate, and the other end of the spring b abuts against the inner side of the circuit board holder. Multiple sets of push rods are provided inside the circuit board holder, and the multiple sets of push rods are distributed at equal angles about the central axis of the fiber optic tail buckle.

[0014] Furthermore, the buffer mechanism includes multiple sets of protrusions fixedly connected to both sides of the bottom of the circuit board holder. The protrusions are hollow inside and made of rubber. A rubber sleeve is fixedly connected to the inner side of the fiber optic tail buckle.

[0015] Furthermore, a rubber ring is fixedly connected to the top of the connecting sleeve, and an annular groove is formed inside the rubber ring. The top of the rubber ring is fixed to the circuit board holder.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the light guide structure that prevents detachment connects the flexible light guide fiber and the fiber tail buckle to the circuit board holder, and fixes the circuit board holder to the circuit board body through the locking mechanism. The guide mechanism pre-installed on the top of the LED light on the circuit board body can guide the light of the LED light on the circuit board body into the flexible light guide fiber, thereby completing the light guide. Under the action of the locking mechanism, the light guide structure can be prevented from detaching from the fan. The release mechanism can be used to easily remove the flexible light guide fiber, and the buffer mechanism absorbs the vibration generated by the fan, further improving the anti-detachment effect of the light guide structure.

[0017] 1. When the fiber optic tail clip is inserted into the circuit board holder, the bottom of the fiber optic tail clip will deform, thereby engaging with the circuit board holder. With the cooperation of the tapered head and the limiting ring, the fiber optic tail clip will not move inside the circuit board holder. After the limiting pin at the top of the light guide component enters the fiber optic tail clip, the bottom of the fiber optic tail clip will not deform, thus preventing the fiber optic tail clip from detaching from the circuit board holder. When the connecting sleeve at the bottom of the circuit board holder connects with the multiple sets of tapered grooves on both sides of the circuit board body, the connecting sleeve can retract inward, thereby engaging with the circuit board body and limiting the circuit board holder. After the two sets of positioning pins at the top of the sheet metal part are inserted into the connecting sleeve, they can prevent the connecting sleeve from deforming and detaching from the circuit board body.

[0018] 2. By pressing the pressure plate, the piston rod is pushed down, allowing gas to enter the airbag through the connecting tube. The inflated airbag will push the multiple sets of connecting plates inside to move, and the connecting plates will push the push rod to move, thereby squeezing the bottom of the limiting ring and disengaging it from the circuit board holder. At this time, the fiber optic tail buckle can be pulled up until it separates from the circuit board holder, thus facilitating the maintenance of the flexible optical fiber inside the fiber optic tail buckle.

[0019] 3. The rubber ring at the connection between the circuit board holder and the connecting sleeve can absorb vibration, while the multiple sets of rubber protrusions at the connection between the circuit board holder and the circuit board body can absorb vibration at the connection, reduce the impact between the tapered ring and the tapered groove inside the circuit board body, thereby improving the stability of the connection. The rubber sleeve inside the fiber optic tail buckle absorbs vibration at the connection when it is in contact with the light guide component, reducing the impact on the light guide component. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the circuit board of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the flexible optical fiber of the present invention; Figure 4 This is a schematic diagram of the three-dimensional cross-sectional structure of the circuit board of the present invention; Figure 5 This is a three-dimensional structural diagram of the circuit board holder of the present invention; Figure 6 This is a schematic diagram of the main cross-sectional structure of the circuit board of the present invention; Figure 7 This is a schematic diagram of the three-dimensional cross-sectional structure of the circuit board holder of the present invention; Figure 8 This is a three-dimensional structural diagram of the connecting sleeve of the present invention; Figure 9 This is a schematic diagram of the three-dimensional structure of the fiber optic tail clip of the present invention; Figure 10 This is a schematic diagram of the three-dimensional structure of the fan of the present invention; Figure 11 This is a three-dimensional structural diagram of the light guide component of the present invention; Figure 12 This is a schematic diagram of the three-dimensional structure of the limiting ring of the present invention; Figure 13 For the present invention Figure 6 A magnified structural diagram at point A; Figure 14 For the present invention Figure 6 A magnified structural diagram at point B; Figure 15 For the present invention Figure 9 A magnified structural diagram at point C.

[0021] In the diagram: 1. Fan; 2. Mounting hole; 3. Flexible optical fiber; 4. Panel clip; 5. Circuit board body; 6. Sheet metal part; 7. LED light; 8. Fiber optic tail clip; 9. Limiting ring; 10. Circuit board holder; 11. Light guide component; 12. Connecting sleeve; 13. Positioning pin; 14. Pressure plate; 15. Piston rod; 16. Spring a; 17. Cavity; 18. Connecting tube; 19. Airbag; 20. Connecting plate; 21. Push rod; 22. Spring b; 23. Protrusion; 24. Rubber ring; 25. Rubber sleeve. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example 1: Please refer to Figures 1-14The present invention provides the following technical solution: a light guide structure to prevent detachment, comprising a fan 1, a panel body fixedly connected to one side of the fan 1, and a mounting hole 2 opened on one side of the panel, through which a flexible light guide fiber 3 is connected; a sheet metal part 6 fixedly connected to the other side of the fan 1; a circuit board body 5 fixedly connected to the top of the sheet metal part 6 by bolts; an LED light 7 installed on one side of the top of the circuit board body 5; one end of the flexible light guide fiber 3 located at the top of the LED light 7; a guiding mechanism provided at the top of the LED light 7; a panel buckle 4 fixedly connected to the other end of the flexible light guide fiber 3 by ultrasonic heat fusion; the diameter of the panel buckle 4 being larger than the diameter of the mounting hole 2 on the panel body; an optical fiber tail buckle 8 fixedly connected to the end of the flexible light guide fiber 3 away from the panel buckle 4 by ultrasonic heat fusion; a locking mechanism provided on the outside of the optical fiber tail buckle 8; and the locking mechanism including an electrical connector penetrating the optical fiber tail buckle 8. The bottom of the fiber optic tail buckle 8 in the circuit board holder 10 is a conical surface, and the top of the conical surface is provided with a stepped surface. This light guiding structure, which prevents detachment, first fixes the flexible light guiding fiber 3, the panel buckle 4, and the fiber optic tail buckle 8 together through an ultrasonic hot-melt process when guiding the light source. Compared with the traditional glue dispensing method, the ultrasonic hot-melt method can avoid the glue affecting the brightness and consistency of the light guiding to the greatest extent. Then, the flexible light guiding fiber 3 is passed through the mounting hole 2 of the panel body on one side of the fan 1. The panel buckle 4 at one end of the flexible light guiding fiber 3 will engage with the mounting hole 2, thereby preventing the flexible light guiding fiber 3 from being pulled out as a whole. Then, the fiber optic tail buckle 8 at one end of the flexible light guiding fiber 3 is inserted into the circuit board holder 10. Subsequently, the guiding mechanism is installed on the LED light 7 on one side of the circuit board body 5, and the circuit board holder 10 is connected to the guiding mechanism. At this time, the light in the LED light 7 will be conducted into the flexible light guiding fiber 3, completing the light guiding.

[0024] Please see Figure 6 and Figure 11 The guiding mechanism includes a light guide component 11 sleeved on the top of the LED lamp 7. A limiting pin is fixedly connected to the top of the light guide component 11, and the top of the limiting pin is conical. The light guide component 11 can be sleeved on the top of the LED lamp 7 to conduct light.

[0025] Please see Figures 3-9 and Figures 12-14The bottom of the circuit board holder 10 is provided with two sets of connecting sleeves 12, and the two sets of connecting sleeves 12 are distributed at equal angles about the central axis of the fiber optic tail buckle 8. Multiple sets of conical rings are fixedly connected to the outside of the connecting sleeves 12, and the multiple sets of conical rings are distributed at equal intervals on the outside of the connecting sleeves 12. Multiple sets of conical grooves matching the conical rings are opened inside the circuit board body 5. Multiple sets of through grooves are opened at the bottom of the fiber optic tail buckle 8, and the multiple sets of through grooves are distributed at equal angles about the central axis of the fiber optic tail buckle 8. A limiting ring 9 is fixedly connected to the top of the fiber optic tail buckle 8, and the bottom of the limiting ring 9 abuts against the top of the circuit board holder 10. When the fiber optic tail clip 8 is inserted into the circuit board holder 10, it first contacts the circuit board holder 10 through the tapered surface at the bottom. After contact, the fiber optic tail clip 8 deforms through the multiple sets of through slots inside and contracts inward. When the fiber optic tail clip 8 is fully inserted into the circuit board holder 10, the limiting ring 9 at the top contacts the top of the circuit board holder 10, and the tapered head at the bottom of the fiber optic tail clip 8 returns to its shape, thereby engaging with the circuit board holder 10 through the stepped surface at the top of the tapered head. With the cooperation of the tapered head and the limiting ring 9, the fiber optic tail clip 8 will not move inside the circuit board holder 10.

[0026] Please see Figures 3-9 and Figure 14 The outer side of the connecting sleeve 12 has multiple sets of deformation grooves, and the deformation grooves are rectangular in shape. The bottom of the inner side of the connecting sleeve 12 has a conical hole. A positioning pin 13 is connected through the inside of the connecting sleeve 12. The bottom of the positioning pin 13 is fixed to the sheet metal part 6, and the top of the positioning pin 13 is conical. When the circuit board holder 10 is inserted into the light guide component 11, the limiting pin at the top of the light guide component 11 will enter the interior of the fiber optic tail buckle 8. Since the top of the limiting pin is conical, it is easier to connect. At this time, the light guide component 11 can guide the light of the LED lamp 7 into the flexible light guide fiber 3. And since the limiting pin is inserted into the fiber optic tail buckle 8, the bottom of the fiber optic tail buckle 8 will not be able to... The deformation prevents the fiber optic tail clip 8 from detaching from the circuit board holder 10. When the circuit board holder 10 is connected to the circuit board body 5, the connecting sleeve 12 at the bottom of the circuit board holder 10 will connect with the multiple sets of tapered grooves on both sides of the circuit board body 5 through multiple sets of tapered rings on the outside. Since the connecting sleeve 12 has multiple sets of deformation grooves on the outside, the connecting sleeve 12 can shrink inward, thereby engaging with the circuit board body 5 and limiting the circuit board holder 10. When the circuit board body 5 is installed on the sheet metal part 6, the two sets of positioning pins 13 at the top of the sheet metal part 6 will be inserted into the connecting sleeve 12, thereby preventing the connecting sleeve 12 from deforming and detaching from the circuit board body 5.

[0027] The above operations can protect the installed light guide structure from detachment, thereby preventing the interruption of light source transmission.

[0028] Example 2: Please see Figure 4 , Figure 6 , Figure 13 and Figure 15 Based on Embodiment 1, the following specific structure is also disclosed: A release mechanism is provided inside the circuit board holder 10. The release mechanism includes cavities 17 opened on both sides of the top of the circuit board holder 10. A piston rod 15 is slidably connected inside the cavity 17. A pressure plate 14 is fixedly connected to the top of the piston rod 15. A spring a16 abuts against the bottom of the pressure plate 14. The bottom of the spring a16 abuts against the circuit board holder 10. The inner side of the spring a16 is sleeved with the piston rod 15. When the optical fiber tail buckle 8 is separated from the circuit board holder 10 and the flexible optical fiber 3 is maintained, the piston rod 15 is pushed down by pressing the pressure plate 14. The piston rod 15 will squeeze the gas in the cavity 17. When the pressure plate 14 moves down, it will squeeze the spring a16.

[0029] Please see Figure 4 , Figure 6 , Figure 13 and Figure 15 A connecting tube 18 is connected to one side of the cavity 17. The outer side of the connecting tube 18 is fixed to the circuit board holder 10. One end of the connecting tube 18 is connected to an airbag 19. The outer side of the airbag 19 is fixed to the inner side of the circuit board holder 10. The inner side of the airbag 19 abuts against multiple sets of connecting plates 20, and the connecting plates 20 are arc-shaped. A push rod 21 is fixedly connected to one side of the connecting plate 20. The push rod 21 is rectangular in shape. One end of the push rod 21 is slidably connected to the circuit board holder 10. A spring b22 is sleeved on the outer side of the push rod 21. One end of the spring b22 abuts against the connecting plate 20, and the other end of the spring b22 abuts against the inner side of the circuit board holder 10. Multiple sets of push rods 21 are arranged inside the circuit board holder 10, and the multiple sets of push rods 21 are distributed at equal angles about the central axis of the fiber optic tail buckle 8. The pressurized gas enters the airbag 19 through the connecting pipe 18, causing the airbag 19 to expand. The expanded airbag 19 pushes the multiple sets of connecting plates 20 on the inside to move, and the connecting plates 20 push the push rod 21 to move, squeezing the spring b22 on one side. When the multiple sets of connecting plates 20 move, they squeeze the bottom of the limiting ring 9. Since the light guide component 11 has separated from the limiting ring 9 at this time, the conical head at the bottom of the limiting ring 9 will deform, thereby disengaging from the circuit board holder 10. At this time, the fiber optic tail buckle 8 can be pulled up, and then the pressure plate 14 can be released, so that the spring b22 pushes the multiple sets of connecting plates 20 and the push rod 21 to reset, preventing the push rod 21 from blocking the upward-moving limiting ring 9. Then the fiber optic tail buckle 8 can continue to be moved until it separates from the circuit board holder 10.

[0030] The above operations facilitate the disassembly of the fiber optic tail clip 8, thereby making it easier to maintain the flexible optical fiber 3 inside the fiber optic tail clip 8.

[0031] Example 3: Please see Figure 7 , Figure 13 and Figure 14 Based on Embodiment 2, the following specific structure is also disclosed: a buffer mechanism is provided at the bottom of the circuit board holder 10 and inside the fiber optic tail buckle 8. The buffer mechanism includes multiple sets of protrusions 23 fixedly connected to both sides of the bottom of the circuit board holder 10. The protrusions 23 are hollow inside and made of rubber. A rubber sleeve 25 is fixedly connected to the inner side of the fiber optic tail buckle 8. A rubber ring 24 is fixedly connected to the top of the connecting sleeve 12. An annular groove is opened inside the rubber ring 24. The top of the rubber ring 24 is fixed to the circuit board holder 10.

[0032] Please see Figure 7 , Figure 13 and Figure 14 The light guide structure that prevents detachment has the following features: when the fan 1 vibrates, the connection between the circuit board holder 10 and the connecting sleeve 12 is equipped with a rubber ring 24, which is hollow inside. Therefore, the rubber ring 24 can deform to absorb the vibration. At the connection between the circuit board holder 10 and the circuit board body 5, there are multiple sets of rubber protrusions 23. When the vibration is transmitted to the protrusions 23, the protrusions 23 can also deform to absorb it. After the vibration is absorbed, the impact between the conical ring on the outside of the connecting sleeve 12 and the conical groove inside the circuit board body 5 will be reduced, thereby improving the stability of the connection. When the rubber sleeve 25 inside the fiber optic tail buckle 8 is in contact with the light guide component 11, it will absorb the vibration at the connection between the two, reducing the impact on the light guide component 11.

[0033] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A light guide structure for preventing detachment, comprising a fan (1), a panel body is fixedly connected to one side of the fan (1), and a mounting hole (2) is provided on one side of the panel, a flexible light guide fiber (3) is connected through the mounting hole (2), and a sheet metal part (6) is fixedly connected to the other side of the fan (1). characterized in that The top of the sheet metal part (6) is fixedly connected to the circuit board body (5) by bolts. An LED light (7) is installed on one side of the top of the circuit board body (5). One end of the flexible light guide fiber (3) is located on the top of the LED light (7). A guide mechanism is provided on the top of the LED light (7). The other end of the flexible light guide fiber (3) is fixedly connected to the panel buckle (4) by ultrasonic heat fusion. The diameter of the panel buckle (4) is larger than the diameter of the mounting hole (2) on the panel body. The end of the flexible light guide fiber (3) away from the panel buckle (4) is fixedly connected to the fiber tail buckle (8) by ultrasonic heat fusion. A locking mechanism is provided on the outside of the fiber tail buckle (8). The locking mechanism includes a circuit board seat (10) that penetrates the fiber tail buckle (8). The bottom of the fiber tail buckle (8) is a conical surface. A stepped surface is provided on the top of the conical surface. The stepped surface is locked and connected to the circuit board seat (10). The circuit board holder (10) is provided with a release mechanism inside; the bottom of the circuit board holder (10) and the fiber optic tail buckle (8) are both provided with a buffer mechanism. The guiding mechanism includes a light guide component (11) sleeved on the top of the LED lamp (7). A limiting pin is fixedly connected to the top of the light guide component (11), and the top of the limiting pin is conical. When the circuit board holder (10) is inserted into the light guide component (11), the limiting pin on the top of the light guide component (11) will enter the interior of the fiber optic tail buckle (8). Two sets of connecting sleeves (12) are provided at the bottom of the circuit board holder (10), and the two sets of connecting sleeves (12) are equally clamped about the central axis of the fiber optic tail buckle (8). The connecting sleeve (12) is angularly distributed, and multiple sets of conical rings are fixedly connected to the outer side of the connecting sleeve (12), and the multiple sets of conical rings are equidistantly distributed on the outer side of the connecting sleeve (12); multiple sets of deformation grooves are opened on the outer side of the connecting sleeve (12), and the deformation grooves are rectangular in shape; a conical hole is opened at the bottom of the inner side of the connecting sleeve (12); a positioning pin (13) is connected through the inside of the connecting sleeve (12); the bottom of the positioning pin (13) is fixed to the sheet metal part (6); and the top of the positioning pin (13) is conical. The circuit board body (5) has multiple sets of tapered grooves that match the tapered ring inside. The bottom of the fiber optic tail buckle (8) has multiple sets of through grooves, and the multiple sets of through grooves are distributed at equal angles about the central axis of the fiber optic tail buckle (8). The top of the fiber optic tail buckle (8) is fixedly connected to a limiting ring (9), and the bottom of the limiting ring (9) abuts against the top of the circuit board holder (10).

2. The light guide structure of claim 1, wherein: The tripping mechanism includes cavities (17) opened on both sides of the top of the circuit board holder (10). A piston rod (15) is slidably connected inside the cavity (17). A pressure plate (14) is fixedly connected to the top of the piston rod (15). A spring a (16) abuts against the bottom of the pressure plate (14). The bottom of the spring a (16) abuts against the circuit board holder (10). The inner side of the spring a (16) is sleeved with the piston rod (15). One side of the cavity (17) is connected to a connecting tube (18), the outer side of the connecting tube (18) is fixed to the circuit board holder (10), one end of the connecting tube (18) is connected to an airbag (19), the outer side of the airbag (19) is fixed to the inner side of the circuit board holder (10), and the inner side of the airbag (19) abuts against multiple sets of connecting plates (20), and the connecting plates (20) are arc-shaped. A push rod (21) is fixedly connected to one side of the connecting plate (20). The push rod (21) is rectangular in shape. One end of the push rod (21) is slidably connected to the circuit board holder (10). A spring b (22) is sleeved on the outside of the push rod (21). One end of the spring b (22) abuts against the connecting plate (20), and the other end of the spring b (22) abuts against the inside of the circuit board holder (10). Multiple sets of push rods (21) are arranged inside the circuit board holder (10), and the multiple sets of push rods (21) are distributed at equal angles about the central axis of the fiber optic tail buckle (8).

3. The light guide structure of claim 1, wherein: The buffer mechanism includes multiple sets of protrusions (23) fixedly connected to both sides of the bottom of the circuit board holder (10). The protrusions (23) are hollow inside and made of rubber. A rubber sleeve (25) is fixedly connected to the inner side of the fiber optic tail buckle (8).

4. The light guide structure for preventing detachment according to claim 1, characterized in that: A rubber ring (24) is fixedly connected to the top of the connecting sleeve (12). An annular groove is provided inside the rubber ring (24). The top of the rubber ring (24) is fixed to the circuit board holder (10).

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