Waterproof structure of laser radar

Abstract

The utility model relates to the technical field of laser radars, in particular to a waterproof structure of a laser radar, which comprises an outer shell, an upper cover plate, a radar window, a PCB (printed circuit board), a transceiving module and a wiring terminal, the transceiving module and the wiring terminal are mounted on the PCB, the wiring terminal penetrates through the upper cover plate, and a shell sealing assembly for sealing a gap is arranged between the outer shell and the upper cover plate. According to the waterproof structure of the laser radar, the waterproof and breathable assembly is used for achieving waterproof and breathable effects; the laser radar generates heat to increase the air pressure inside the outer shell, the waterproof breathable assembly can avoid the situation that the air pressure inside and outside the outer shell is inconsistent, hot air can be emitted out, and meanwhile water is prevented from entering the waterproof breathable assembly. The shell sealing assembly is used for blocking the gap between the upper cover plate and the outer shell, the window sealing assembly is used for blocking the gap between the outer shell and the radar window, and a good waterproof effect can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to laser radar technical field, concretely is a kind of waterproof structure of laser radar. BACKGROUND

[0002] Laser radar is mainly applied to measurement, intelligent transportation, environmental monitoring, industrial automation and object positioning etc., in above-mentioned field, the working environment of laser radar is often more complex, and there is certain requirement to the waterproof and dustproof of laser radar.

[0003] Traditional laser radar often relies on physical sealing to realize waterproof function. However, this sealing mode prevents water from entering while hindering air circulation, causing internal heat to be difficult to effectively dissipate, due to the working characteristics of electronic components inside laser radar, a certain amount of heat will be generated, if these heat cannot be discharged in time, temperature rise can be caused, affect equipment performance, and even shorten its service life. UTILITARY MODEL

[0004] To realize the above-mentioned purpose, the utility model provides the following technical scheme: a kind of waterproof structure of laser radar, including shell body, upper cover plate, radar window, PCB circuit board, and transceiver module and terminal block installed on PCB circuit board, terminal block is worn with upper cover plate, the shell body and upper cover plate between being provided with the shell sealing assembly of sealing gap, the shell body and radar window between being provided with the window sealing assembly of sealing gap, the upper cover plate is provided with waterproof and breathable component;

[0005] The waterproof and breathable component includes protective grid formed on the upper cover plate, and waterproof and breathable film is installed on the bottom of the upper cover plate and covers the protective grid.

[0006] Further, the bottom of the upper cover plate is formed with a flange, and an installation groove adapted to the waterproof and breathable film is formed between the inner ring of the flange and the upper cover plate, and the waterproof and breathable film is embedded in the installation groove.

[0007] Further, the window sealing assembly includes a receiving groove formed on the left side of the shell body, the receiving groove is provided with a window housing and a window sealing ring, the radar window is installed on the inner side of the window housing, the cross section of the window sealing ring is square, and the two end faces of the window sealing ring respectively abut against the inner wall of the shell body and the window housing.

[0008] Further, the outer side of the window housing extends outward to form a shell limiting plate, one side of the shell limiting plate towards the shell body is formed with an inner window sealing groove, and the inner window sealing groove is provided with an inner window sealing ring.

[0009] The inner sealing ring in the window abuts against the inner wall of the outer shell and the shell limiting plate, and the shell limiting plate is provided with locking bolts screwed with the outer shell.

[0010] Further, the shell limiting plate is provided with reinforcing beads on the side away from the outer shell, and the reinforcing beads correspond to the inner sealing groove of the window.

[0011] Further, the shell sealing assembly comprises a pressing plate formed at the bottom of the upper cover plate and abutting against the inner wall of the outer shell, the upper cover plate is formed with an outer ring and an inner ring through the pressing plate, and the side of the outer ring of the upper cover plate opposite to the outer shell is provided with a positioning groove, and the shell outer sealing ring is arranged between the two positioning grooves, and a plurality of fixing bolts are arranged on the upper cover plate and screwed with the outer shell.

[0012] Further, the inner wall of the outer shell is formed with a boss below the pressing plate, the boss is provided with a shell inner sealing groove, and the shell inner sealing groove is provided with a shell inner sealing ring, and the pressing plate abuts against the shell inner sealing ring.

[0013] Further, the pressing plate is formed with a plurality of reinforcing ribs on the side close to the inner ring of the upper cover plate.

[0014] Further, the inner part of the outer shell is formed with a plurality of supporting columns, the supporting columns are at least four, and the PCB circuit board is connected to the supporting columns through bolts.

[0015] Compared with the prior art, the technical scheme has the following beneficial effects:

[0016] The waterproof structure of the laser radar:

[0017] 1. The waterproof and breathable assembly is used to prevent water and allow air to pass through; the laser radar generates heat, which causes the air pressure inside the outer shell to increase, the waterproof and breathable assembly can avoid the difference in air pressure between the inside and outside of the outer shell, and can also allow the hot gas to escape, while preventing water from entering;

[0018] 2. The shell sealing assembly is used to block the gap between the upper cover plate and the outer shell, and the window sealing assembly is used to block the gap between the outer shell and the radar window, which can better prevent water. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic view of the utility model;

[0020] Figure 2 It is a front view of the utility model;

[0021] Figure 3 It is a bottom view of the upper cover plate in the utility model;

[0022] Figure 4 The utility model discloses Figure 2 Partial three-dimensional view of right view.

[0023] In the drawing: 1, outer shell body;2, upper cover plate;3, radar window;4, shell sealing assembly;41, shell inner sealing ring;42, shell outer sealing ring;43, shell inner sealing groove;44, compression plate;45, positioning groove;46, reinforcing rib;5, window sealing assembly;51, window shell;52, containing groove;53, window sealing ring;54, shell limiting plate;55, window inner sealing groove;56, window inner sealing ring;57, locking bolt;58, reinforcing rib;6, waterproof and breathable assembly;62, protective grating;63, waterproof and breathable film;64, mounting groove;65, flange;7, support column;8, PCB circuit board;9, transceiver module;10, wiring terminal. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] Please refer to Figures 1-4 The waterproof structure of the laser radar in the embodiment comprises an outer shell body 1, an upper cover plate 2 sealingly arranged above the outer shell body 1, a radar window 3 and a PCB circuit board 8 arranged in the outer shell body 1, a transceiver module 9 and a wiring terminal 10 penetrating the upper cover plate 2 and arranged on the PCB circuit board 8, and the upper cover plate 2 is a plastic shell formed by injection molding, wherein the outer shell body 1 is formed by aluminum alloy die casting or is formed by machining an aluminum alloy block, a shell sealing assembly 4 with a sealing gap is arranged between the outer shell body 1 and the upper cover plate 2, a window sealing assembly 5 with a sealing gap is arranged between the outer shell body 1 and the radar window 3, and a waterproof and breathable assembly 6 is arranged on the upper cover plate 2.

[0026] In the above structure, the window sealing assembly can improve the sealing and waterproof effect of the radar window, the shell sealing assembly can improve the sealing property of the connection between the upper cover plate and the outer shell body, and the waterproof and breathable assembly can also have a heat dissipation effect, thereby avoiding damage to the equipment caused by excessive heat generated during operation.

[0027] As Figures 2-3The waterproof and breathable assembly 6 comprises the upper cover plate 2, the protective grid 62 in a circular shape is formed on the upper cover plate 2, the bottom of the upper cover plate 2 is formed with a flange 65 with a diameter larger than that of the protective grid 62, an installation groove 64 is formed between the inner ring of the flange 65 and the upper cover plate 2, the waterproof and breathable film 63 is welded inside the installation groove 64, and the waterproof and breathable film 63 is embedded in the installation groove 64; the flange 65 is higher than the surface of the waterproof and breathable film 63, so that the components in the laser radar are prevented from scratching the waterproof and breathable film 63, the protective grid 62 prevents foreign matters outside the laser radar from scratching the waterproof and breathable film 63, the integrity of the waterproof and breathable film 63 is better guaranteed, and the shell of the laser radar can better play the waterproof and breathable role.

[0028] As Figure 4 The window sealing assembly 5 comprises the containing groove 52 formed on the left side wall of the outer shell 1, the window sealing ring 53 and the window shell 51 are sequentially arranged in the containing groove 52 from left to right, the window shell 51 is made of plastic, the window shell 51 and the radar window 3 can be bonded together by waterproof glue or can be produced by a secondary injection molding process, so that the sealing property between the window shell 51 and the radar window 3 is ensured, the window sealing ring 53 has a square cross section, the left and right sides of the window sealing ring 53 are respectively in abutment with the left side wall of the outer shell 1 and the window shell 51, the window sealing ring 53 is made of flexible rubber with high temperature resistance, the square cross section can better abut with the containing groove 52 and the window shell 51, and the sealing and waterproof effect is better improved.

[0029] Further, the outer side of the window shell 51 outwardly extends to form the shell limiting plate 54, the shell limiting plate 54 is formed with the inner window sealing groove 55 on the side facing the outer shell 1, the inner window sealing ring 56 is arranged in the inner window sealing groove 55, and the inner window sealing ring 56 is in abutment with the inner wall of the outer shell 1; the inner window sealing groove 55 has a trapezoidal cross section, and the inner window sealing ring 56 is preferably an O-shaped ring; the shell limiting plate 54 is provided with the locking bolt 57 threadedly connected with the outer shell 1, the locking bolt 57 locks the shell limiting plate 54 on the inner side of the outer shell 1, and meanwhile, the inner window sealing ring 56 is extruded to abut with the inner wall of the inner window sealing groove 55, so that the sealing and waterproof effect is better improved.

[0030] In addition, the shell limiting plate 54 is formed with the reinforcing rib 58 away from the outer shell 1, the reinforcing rib 58 corresponds to the inner window sealing groove 55, and the reinforcing rib 58 improves the overall structural strength of the shell limiting plate 54; when the shell limiting plate 54 is extruded, the reinforcing rib 58 can prevent the shell limiting plate 54 from being deformed under stress, and the effectiveness of the sealing structure is ensured.

[0031] As Figure 2The shell sealing assembly 4 comprises a pressing plate 44 formed at the bottom of the upper cover plate 2, the pressing plate 44 forms an outer ring and an inner ring at the bottom of the upper cover plate 2, and the outer ring of the pressing plate 44 is provided with a positioning groove 45 at the top of the outer shell 1, the outer side of the pressing plate 44 is attached to the inner wall of the outer shell 1, a shell outer sealing ring 42 is arranged between the two positioning grooves 45, the shell outer sealing ring 42 is square in cross section, the upper and lower sides of the shell outer sealing ring 42 are arranged in the two positioning grooves 45 respectively, a plurality of fixing bolts are arranged on the upper cover plate 2 and are screwed with the outer shell 1, and the fixing bolts are arranged outside the shell outer sealing ring 42. Therefore, the shell outer sealing ring can seal the gap between the upper cover plate 2 and the outer shell, and better play a sealing and waterproof effect.

[0032] Further description, the inner wall of the outer shell 1 is formed with a boss, the boss is located below the pressing plate 4, and a shell inner sealing groove 43 in the shape of a semicircle is further formed on the boss, a shell inner sealing ring 41 is arranged in the shell inner sealing groove 43, the pressing plate 44 is tightly attached to the shell inner sealing ring 41, and the shell inner sealing ring 41 is deformed after being extruded, thereby better playing a sealing effect.

[0033] In addition, a plurality of reinforcing ribs 46 are formed on one side of the outer ring of the pressing plate 44. The reinforcing ribs can improve the overall strength of the upper cover plate.

[0034] As shown in the drawings, Figure 2 The inner bottom wall of the outer shell 1 is formed with four support columns 7, the four support columns 7 are integrally formed with the outer shell 1, and the PCB circuit board is fixed on the support columns 7 by bolts; the PCB circuit board is provided with a wiring terminal 10, the wiring terminal 10 is pre-embedded in the injection mold during the injection molding of the upper cover plate 2, and the upper cover plate 2 has strong cladding force on the wiring terminal 10 after the injection molding of the upper cover plate 2, which can ensure the sealing and waterproof effect.

[0035] The entire work flow is completed, and the contents not described in detail in the specification all belong to the prior art known to those skilled in the art.

[0036] It should be noted that the relational terms herein, such as first and second, are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of additional identical elements in the process, method, article or device including the element.

[0037] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A waterproof structure of a laser radar, comprising an outer shell (1), an upper cover plate (2), a radar window (3), a PCB circuit board (8), and a transceiver module (9) and a wiring terminal (10) mounted on the PCB circuit board (8), the wiring terminal (10) being provided through the upper cover plate (2), characterized in that: The outer shell (1) and the upper cover plate (2) are provided with a shell sealing assembly (4) with a sealing gap, and the outer shell (1) and the radar window (3) are provided with a window sealing assembly (5) with a sealing gap, and the upper cover plate (2) is provided with a waterproof and breathable assembly (6). The waterproof and breathable assembly (6) includes a protective grid (62) formed on the upper cover plate (2), and a waterproof and breathable film (63) installed on the bottom of the upper cover plate (2) covering the protective grid (62). 2.The waterproof structure of the laser radar according to claim 1, characterized in that: The bottom of the upper cover plate (2) is formed with a flange (65), and the inner circle of the flange (65) and the upper cover plate (2) form an installation groove (64) matched with the waterproof and breathable film (63), and the waterproof and breathable film (63) is embedded in the installation groove (64). 3.The waterproof structure of the laser radar according to claim 1, characterized in that: The window sealing assembly (5) includes a containing groove (52) formed on the left side of the outer shell (1), and the containing groove (52) is provided with a window shell (51) and a window sealing ring (53), the radar window (3) is installed on the inner side of the window shell (51), and the cross section of the window sealing ring (53) is square, and the two end faces of the window sealing ring (53) are respectively abutted with the inner wall of the outer shell (1) and the window shell (51).

4. The waterproof structure of the laser radar according to claim 3, wherein: The outer side of the window shell (51) extends outward to form a shell limiting plate (54), one side of the shell limiting plate (54) towards the outer shell (1) is formed with a window inner sealing groove (55), and the window inner sealing groove (55) is provided with a window inner sealing ring (56). The window inner sealing ring (56) is abutted with the inner wall of the outer shell (1) and the shell limiting plate (54), and the shell limiting plate (54) is provided with a locking bolt (57) screwed with the outer shell (1).

5. The waterproof structure of a laser radar according to claim 4, wherein: The side of the shell limiting plate (54) away from the outer shell (1) is provided with a reinforcing rib (58) corresponding to the window inner sealing groove (55).

6. The waterproof structure of a laser radar according to claim 1, wherein: The shell sealing assembly (4) includes a pressing plate (44) formed on the bottom of the upper cover plate (2) and attached to the inner wall of the outer shell (1), the upper cover plate (2) forms an outer circle and an inner circle through the pressing plate (44), and the outer circle of the upper cover plate (2) is provided with a positioning groove (45) on the side opposite to the outer shell (1), and a shell outer sealing ring (42) is arranged between the two positioning grooves (45), and a plurality of fixing bolts are arranged on the upper cover plate (2) and screwed with the outer shell (1).

7. The waterproof structure of a laser radar according to claim 6, wherein: The inner wall of the outer shell (1) is formed with a boss below the pressing plate (44), the boss is provided with a shell inner sealing groove (43), the shell inner sealing groove (43) is provided with a shell inner sealing ring (41), and the pressing plate (44) is abutted on the shell inner sealing ring (41).

8. The waterproof structure of the laser radar according to claim 6, wherein: The side of the pressing plate (44) close to the inner circle of the upper cover plate (2) is formed with a plurality of reinforcing ribs (46).

9. The waterproof structure of a laser radar according to claim 1, wherein: The inner part of the outer shell (1) is formed with a plurality of support columns (7), the support columns (7) are provided with at least four, and the PCB circuit board (8) is connected to the support columns (7) through bolts.

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