Laser radar light conduction component

Abstract

The utility model discloses a laser radar light conduction component, which comprises a reflector assembly, a fixed frame, a first connecting round rod of which one end is fixedly connected with the inner surface of the fixed frame, a connecting circular ring fixedly connected with the other end of the first connecting round rod, and a reflector adhered to the inner part of the connecting circular ring through glue, the lifting rod comprises a second connecting round rod and a third connecting square rod, the bottom end of the second connecting round rod is connected with the center of the surface of the top of the fixing frame in a screwed mode through threads, the third connecting square rod is fixedly connected with the top end of the second connecting round rod, and a concave clamping groove is formed in the surface of one side of the third connecting square rod; an adjusting design for changing the position of a mirror surface is arranged on the reflector optical element, a fitting plate is pulled outwards, a third connecting square rod and a reflector assembly vertically move downwards, the effect of changing the position of the reflector assembly is achieved, in addition, a sleeve and a pulling rope are pulled outwards, a movable wiping cotton pad can wipe dust and impurities attached to the surface of the reflector, and the effect of changing the position of the reflector assembly is achieved. And the surface of the reflector is kept clean.

Description

Technical Field

[0001] This utility model belongs to the technical field of laser radar optical transmission components, and specifically relates to a laser radar optical transmission component. Background Technology

[0002] A lidar (Light Detection and Ranging) is a radar device that uses laser beams to detect the position, velocity, and other characteristics of a target. A lidar mainly consists of a laser, an optical transmission component, a detector, and signal processing circuitry. The optical transmission component is one of the core components of a lidar; it is responsible for transmitting the light signal emitted by the light source to the target area and receiving the reflected light signal for subsequent signal processing and analysis. The optical transmission component includes lenses, mirrors, beam splitters, and filters. Mirrors are a common type of optical transmission component that reflect incident light in different directions, changing the direction of the laser beam to better measure the distance and shape of objects.

[0003] The reflector is installed inside the lidar housing. When dust, oil, or other impurities enter the lidar housing and cover the reflector surface, it will affect the lidar's measurement accuracy and stability. Contamination will reduce the reflection efficiency. The dust distribution on the reflector surface installed inside the lidar housing is uneven, with some mirrors accumulating more dust and others less. The reflection effect of the mirror with more dust is affected, requiring the lidar to be disassembled and cleaned. The reflector does not have the function of adjusting its position so that the area with less dust on the mirror surface comes into contact with the laser source. This is a drawback of not being able to adjust the position of the reflector.

[0004] When existing reflective optical elements are installed inside the lidar housing, there is a problem with the design that does not change the position of the reflective surface. To address this, this application proposes a lidar light transmission component. Utility Model Content

[0005] The purpose of this invention is to provide a laser radar optical transmission component to solve the problem mentioned in the background art that the reflective optical element does not have an adjustment design to change the position of the mirror.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a laser radar optical transmission component, comprising...

[0007] The reflector assembly includes a fixed frame, a first connecting rod with one end fixedly connected to the inner surface of the fixed frame, a connecting ring fixedly connected to the other end of the first connecting rod, and a reflector lens glued inside the connecting ring.

[0008] The lifting rod includes a second connecting round rod whose bottom end is threadedly connected to the center of the top surface of the fixed frame, and a third connecting square rod fixedly connected to the top end of the second connecting round rod. A recessed groove is provided on one side surface of the third connecting square rod.

[0009] A mounting box that is slidably fitted onto the outside of the third connecting square rod;

[0010] The limiting components installed on the mounting box include a pull rod that slides into the interior of the mounting box at one end, an adhesive plate that is fixedly connected to the exposed end of the pull rod, a limiting plate located inside the mounting box and fixedly connected to one end of the pull rod, and a compression spring located inside the mounting box and sleeved on the outside of the pull rod.

[0011] Preferably, a movable plate is connected between the opposing surfaces of the fixed frame, and a sliding block that is slidably connected to both ends of the movable plate is fixedly connected to the fixed frame, with one end of the sliding block penetrating into the interior of the fixed frame.

[0012] Preferably, the fixed frame has a movable cavity a inside, and the fixed frame is provided with a limiting rod passing through one end of the sliding block and a retraction spring sleeved on the outside of the limiting rod within the movable cavity a.

[0013] Preferably, the sliding block is slidably connected to the limiting rod, and a wiping pad is glued to the surface of the moving plate.

[0014] Preferably, the surface of the connecting ring is flush with the surface of the reflective lens on the same side, and the surface of the wiping pad opposite the connecting ring is on the same vertical plane.

[0015] Preferably, a pulling component is provided at the center of the bottom end of the fixed frame. The pulling component includes a fixed cylinder, a sleeve that is slidably sleeved on the outside of the fixed cylinder, and a pulling rope that is pulled and connected to the fixed frame. The pulling rope passes through the center of the bottom end of the fixed frame. The pulling rope has a forked "Y" shape structure. One end of the pulling rope passes through the fixed cylinder and is connected to the sleeve. The forked ends of the pulling rope are connected to the sliding block.

[0016] Preferably, the outer surface of the fixed cylinder near the end of the pulling rope is provided with external threads, one end of the hollow sleeve is sealed, and the inner diameter of the sleeve is the same as the outer diameter of the fixed cylinder.

[0017] Preferably, the limiting plate has a "U" shaped structure, and the two ends of the limiting plate are engaged with the corresponding slots.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] In this invention, the optical element of the reflector has an adjustment design to change the position of the mirror. By pulling outward the bonding plate, the third connecting rod and the reflector assembly are moved vertically downward, thereby changing the position of the reflector assembly. In addition, by pulling outward the sleeve and the rope, the moving wiping cotton pad can wipe away the dust and impurities adhering to the surface of the reflector, keeping the surface of the reflector clean. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 For the present utility model Figure 1 Enlarged structural diagram of section A in the middle;

[0022] Figure 3 This is a cross-sectional view of the mounting box of this utility model.

[0023] Figure 4 This is a cross-sectional view of the connecting ring of this utility model;

[0024] Figure 5 This is a cross-sectional view of the fixing frame of this utility model;

[0025] In the diagram: 3. Mounting box; 5. Movable plate; 6. Pull rope; 7. Fixing cylinder; 8. Sleeve; 11. Fixing frame; 12. First connecting round rod; 13. Connecting ring; 14. Reflecting lens; 21. Second connecting round rod; 22. Third connecting square rod; 41. Adhesive plate; 42. Pull rod; 43. Limiting plate; 44. Compression spring; 51. Wiping cotton pad; 52. Sliding block; 111. Limiting rod; 112. Retraction spring; 221. Slot. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1 to 5This utility model provides a technical solution: a laser radar light transmission component, including a reflector assembly, comprising a fixed frame 11, a first connecting rod 12 with one end fixedly connected to the inner surface of the fixed frame 11, a connecting ring 13 fixedly connected to the other end of the first connecting rod 12, and a reflector lens 14 glued inside the connecting ring 13. When the fixed frame 11 is installed inside the laser radar housing B, other components are installed inside the laser radar housing B. Through the joint cooperation of the reflector assembly, the laser radar housing B, and other components, various functions of the laser radar are achieved. The laser source component installed on the laser radar housing B emits light... The laser beam is emitted, and the reflector 14 reflects the laser beam, changing the direction of the light. The operating principle of the reflector 14 is conventional technology and will not be described in detail in this application. The lifting rod includes a second connecting round rod 21 whose bottom end is threadedly connected to the center of the top surface of the fixed frame 11, and a third connecting square rod 22 fixedly connected to the top end of the second connecting round rod 21. When installed inside the lidar housing B, the second connecting round rod 21 and the third connecting square rod 22 penetrate the surface of the lidar housing B. The reflector assembly is located inside the lidar housing B, and the lifting rod is slidably connected to the lidar housing B. By changing the position of the lifting rod... This changes the position of the reflector assembly, preventing the dust-accumulated mirror surface of the reflector 14 from contacting the laser beam, allowing different positions on the reflector 14 to contact the laser beam, thus changing the mirror position of the reflector 14. A recessed slot 221 is formed on one side surface of the third connecting rod 22, and the limiting plate 43 is embedded in the corresponding slot 221 to limit the third connecting rod 22, thereby fixing the reflector assembly. A mounting box 3 is slidably fitted onto the outside of the third connecting rod 22, limiting the third connecting rod 22. A limiting component mounted on the mounting box 3 includes a component that slides through the mounting box 3 at one end. The mounting box 3 contains a pull rod 42, a bonding plate 41 fixedly connected to the exposed end of the pull rod 42, a limiting plate 43 located inside the mounting box 3 and fixedly connected to one end of the pull rod 42, and a compression spring 44 located inside the mounting box 3 and sleeved on the outside of the pull rod 42. When the position of the third connecting rod 22 needs to be changed, the bonding plate 41 is pulled outward, so that the pull rod 42 and the limiting plate 43 are pulled along the b direction. At this time, the compression spring 44 is in a compressed state, and there is a gap between the limiting plate 43 and the third connecting rod 22, which is conducive to the raising and lowering of the third connecting rod 22 and facilitates the change of the height position of the third connecting rod 22 and the reflector assembly.

[0028] In this embodiment, a movable plate 5 is connected between the opposing surfaces of the fixed frame 11. Sliding blocks 52 that are slidably connected to the fixed frame 11 are fixedly connected to both ends of the movable plate 5. One end of the sliding block 52 passes through the interior of the fixed frame 11. An active cavity a is provided inside the fixed frame 11. A limiting rod 111 that passes through one end of the sliding block 52 and a contraction spring 112 sleeved on the outside of the limiting rod 111 are provided in the active cavity a. The movable plate 5 and the sliding block 52 can move along the axial direction of the limiting rod 111 to change the position of the movable plate 5.

[0029] In this embodiment, the sliding block 52 is slidably connected to the limiting rod 111. A wiping pad 51 is glued to the surface of the moving plate 5. The surface of the connecting ring 13 is flush with the surface of the reflective lens 14 on the same side. The surface of the wiping pad 51 and the surface opposite to the connecting ring 13 are on the same vertical plane. The wiping pad 51 moves in the same direction as the moving plate 5. The moving wiping pad 51 can wipe away the dust and impurities adhering to the surface of the reflective lens 14, so as to avoid the surface of the reflective lens 14 being covered by dust, thereby affecting the reflection effect of the light beam.

[0030] In this embodiment, a pulling assembly is provided at the center of the bottom end of the fixed frame 11. This pulling assembly includes a fixed cylinder 7, a sleeve 8 slidably fitted outside the fixed cylinder 7, and a pulling rope 6 connected to the fixed frame 11. The pulling rope 6 passes through the center of the bottom end of the fixed frame 11 and has a forked "Y"-shaped structure. One end of the pulling rope 6 passes through the fixed cylinder 7 and connects to the sleeve 8. The forked ends of the pulling rope 6 are connected to the sliding block 52. An external thread is provided on the outer surface of the fixed cylinder 7 near the end of the pulling rope 6. One end of the hollow sleeve 8 is sealed. The inner diameter of the sleeve 8 is the same as that of the fixed cylinder 7. With the same outer diameter, the fixed cylinder 7 is fixed to the lidar housing B by screw thread. When it is necessary to wipe the surface of the reflector 14, the sleeve 8 is pulled outward, which pulls the pull rope 6. The forked end of the pull rope 6 pulls the sliding block 52 to slide. The sliding block 52 moves along the axis of the limiting rod 111. The sliding block 52 compresses the contraction spring 112. The moving wiping cotton pad 51 can wipe the dust and impurities adhering to the surface of the reflector 14. After the sleeve 8 is released, the sliding block 52 and the moving plate 5 are reset under the elastic force of the contraction spring 112, without affecting the reflection function of the reflector 14.

[0031] In this embodiment, the limiting plate 43 has a "U" shaped structure. Both ends of the limiting plate 43 cooperate with the corresponding slots 221. The limiting plate 43 is embedded in the slots 221, which can limit the third connecting rod 22.

[0032] Working principle and usage process of this utility model:

[0033] In this utility model, the reflector assembly is installed inside the lidar housing B. The mounting box 3 is fixed to the surface of the lidar housing B by screws, and the fixing cylinder 7 is fixed to the surface of the lidar housing B by threaded engagement. The pulling rope 6 passes through the fixing cylinder 7, and the sleeve 8 is fitted on the outside of the fixing cylinder 7.

[0034] After completing the above preparations, the steps for adjusting the reflecting mirror 14 are as follows;

[0035] First, when the position of the reflector assembly needs to be lowered, clamp and fix the top end of the third connecting rod 22.

[0036] Second, pull the bonding plate 41 outward so that the pulling rod 42 and the limiting plate 43 are pulled along the b direction. At this time, the compression spring 44 is in a compressed state. There is a gap between the limiting plate 43 and the third connecting rod 22, which is conducive to the lifting and lowering of the third connecting rod 22 and facilitates changing the height of the third connecting rod 22 and the reflector assembly.

[0037] Third, the third connecting square rod 22 is moved vertically downwards, and the reflector assembly composed of the fixed frame 11, the first connecting round rod 12, the connecting ring 13 and the reflector 14 is moved downwards accordingly, so as to change the position of the reflector assembly.

[0038] Fourth, after the reflector assembly moves down to the predetermined position, the bonding plate 41 is released. Under the force of the compression spring 44 and the force of pushing the bonding plate 41, the bonding plate 41 moves in the opposite direction and is bonded to the surface of the mounting box 3. The limiting plate 43 is embedded in the corresponding slot 221, which can limit the third connecting rod 22, thereby keeping the reflector assembly stable and preventing the mirror surface with more dust accumulated on the reflector 14 from contacting the laser beam. This allows different positions on the reflector 14 to contact the laser beam, thus having the function of changing the mirror surface position of the reflector 14.

[0039] Fifth, when it is necessary to wipe the dust off the reflective lens 14, pull the sleeve 8 outward to pull the pull rope 6.

[0040] 6. Pull the end of the forked rope 6 to pull the sliding block 52 to slide. The sliding block 52 moves along the axis of the limiting rod 111 and squeezes the contracting spring 112.

[0041] 7. The movable wiping pad 51 can wipe away dust and impurities adhering to the surface of the reflective lens 14. After the sleeve 8 is released, the sliding block 52 and the moving plate 5 are reset under the elastic force of the retraction spring 112, without affecting the reflective function of the reflective lens 14.

[0042] In summary, the optical element of this practical reflector has an adjustment design to change the position of the mirror. Pulling outward the bonding plate 41 moves the third connecting rod 22 and the reflector assembly vertically downward, thereby changing the position of the reflector assembly. In addition, pulling outward the sleeve 8 and the pulling rope 6 moves the wiping cotton pad 51 to wipe away dust and impurities adhering to the surface of the reflector 14, keeping the surface of the reflector 14 clean.

[0043] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lidar light conducting component, characterized by: The utility model relates to a kind of mirror assembly and lifting rod, including fixed frame (11), one end and the fixed connection of fixed frame (11) inner surface first connecting round pole (12), and the fixed connection of connecting round ring (13) other end with first connecting round pole (12), and the mirror piece (14) of being bonded in the inside of connecting round ring (13) by glue; Lifting rod, including bottom end and the fixed connection of fixed frame (11) top surface center position second connecting round pole (21), and the fixed connection of third connecting square pole (22) top end with second connecting round pole (21), the recessed clamping groove (221) of being set on the side surface of this third connecting square pole (22); Mounting box (3) is slidably set on the outside of third connecting square pole (22); Limiting assembly mounted on mounting box (3), including one end sliding into the inside of mounting box (3) pull rod (42), and the fixed connection of sticking plate (41) exposed one end with pull rod (42), and the fixed connection of limiting plate (43) one end with pull rod (42) in the inside of mounting box (3), and the compression spring (44) of being set on the outside of pull rod (42) in the inside of mounting box (3). The opposite surfaces of the fixed frame (11) are connected with a moving plate (5), and the two ends of the moving plate (5) are fixedly connected with sliding blocks (52) slidably connected with the fixed frame (11).

2. A lidar light guide according to claim 1, wherein: The inside of the fixed frame (11) is provided with an active cavity a, and the inside of the fixed frame (11) is provided with a limiting rod (111) penetrating one end of the sliding block (52) and a contraction spring (112) sleeved outside the limiting rod (111) in the active cavity a.

3. A lidar light guide according to claim 2, wherein: The sliding block (52) is slidably connected with the limiting rod (111), and the surface of the moving plate (5) is bonded with a wiping cotton pad (51) by glue.

4. A lidar light guide according to claim 3, wherein: The surface of the connecting round ring (13) on the same side as the mirror piece (14) is flush, and the wiping cotton pad (51) and the opposite surface of the connecting round ring (13) are in the same vertical plane.

5. A lidar light guide according to claim 4, wherein: The center of the bottom end of the fixed frame (11) is provided with a pulling assembly, which includes a fixed cylinder (7), a sleeve (8) slidably sleeved outside the fixed cylinder (7), and a pulling rope (6) pullably connected with the fixed frame (11). The pulling rope (6) penetrates the center of the bottom end of the fixed frame (11), and the pulling rope (6) is a bifurcated "Y" type structure. One end of the pulling rope (6) penetrates the fixed cylinder (7) and is connected with the sleeve (8). The bifurcated end of the pulling rope (6) is connected with the sliding block (52).

6. A lidar light conducting component according to claim 5, wherein: The outer surface of the fixed cylinder (7) near one end of the pulling rope (6) is provided with an external thread, one end of the hollow sleeve (8) is sealed, and the inner diameter of the sleeve (8) is the same as the outer diameter of the fixed cylinder (7).

7. A lidar light guide according to claim 6, wherein: The limiting plate (43) is a "U" type structure, and the two ends of the limiting plate (43) are matched with the corresponding clamping grooves (221).

8. The laser radar light conducting component of claim 1, wherein: ​

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