CN220019868U

CN220019868U - Transmitting assembly and laser radar

Info

Publication number: CN220019868U
Application number: CN202321435948.0U
Authority: CN
Inventors: 曾建能; 杜海朝
Original assignee: Dongguan Liteng Innovation Electronics Co ltd
Current assignee: Dongguan Liteng Innovation Electronics Co ltd
Priority date: 2023-06-06
Filing date: 2023-06-06
Publication date: 2023-11-14
Anticipated expiration: 2033-06-06

Abstract

The utility model particularly discloses a transmitting assembly and a laser radar, and belongs to the technical field of radar equipment. The transmitting assembly comprises a base, a circuit board, a connecting piece and a shielding layer, wherein the base comprises a shell, an inner cavity is formed by surrounding the shell, and a through groove communicated with the inner cavity is formed in the shell; the circuit board is arranged in the inner cavity and covers the through groove; the connecting piece is penetrated in the through groove, the outer peripheral wall of the connecting piece is welded and connected to the inner wall of the through groove, and one end of the connecting piece facing the inner cavity is welded and connected with the circuit board; the shielding layer is arranged on the shell and coated on the through groove, and the shielding layer is used for blocking electromagnetic waves generated by the circuit board. The utility model can make the connection between the circuit board and the shell more firm and durable, and improve the stability and durability of the connection between the circuit board and the shell, in addition, the welding of the circuit board and the shell can further improve the tightness of the shell, and further reduce the possibility of signal interference to other elements caused by leakage of electromagnetic waves from gaps.

Description

Transmitting assembly and laser radar

Technical Field

The utility model relates to the technical field of radar equipment, in particular to a transmitting assembly and a laser radar.

Background

The laser radar transmitting assembly is generally composed of a circuit board, a heat dissipation shielding seat, a shielding cover and other components, and in order to prevent electromagnetic waves generated by components from leaking from gaps or openings when the circuit board operates, interference is generated on other components in the whole machine, signal receiving of other components is affected, and sealing connection between the circuit board and the heat dissipation shielding seat is realized through glue bonding in the prior art. However, the glue bonding is difficult to maintain the lasting strength after long-term use, and the degradation of the bonding performance easily causes the circuit board to fall off from the heat radiation shielding seat, resulting in the damage of the laser radar.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the transmitting assembly and the laser radar which can improve the connection reliability of the circuit board and the heat radiation shielding seat.

According to a first aspect of the present utility model, there is provided a transmitting assembly comprising a base, a circuit board, a connector and a shielding layer, the base comprising a housing enclosing an inner cavity, the housing being provided with a through slot communicating with the inner cavity; the circuit board is arranged in the inner cavity and covers the through groove; the connecting piece is arranged in the through groove in a penetrating way, the outer peripheral wall of the connecting piece is connected to the inner wall of the through groove in a welding way, and one end of the connecting piece, facing the inner cavity, is connected with the circuit board in a welding way; the shielding layer is arranged on the shell and is coated on the through groove, and the shielding layer is used for blocking electromagnetic waves generated by the circuit board.

According to the embodiment of the utility model, the transmitting assembly has at least the following beneficial effects:

according to the embodiment of the utility model, the through groove communicated with the inner cavity is formed in the shell, the connecting piece is arranged in the through groove, the outer peripheral wall of the connecting piece is welded and connected with the inner wall of the through groove, meanwhile, the connecting piece is welded and connected with the circuit board which is positioned in the inner cavity and covers the through groove, so that the fixed connection between the circuit board and the base is realized through the connecting piece, in addition, the shielding layer which covers the through groove is arranged, the electromagnetic wave generated by the circuit board is prevented from leaking outwards from the through groove, the possibility of leakage of the electromagnetic wave is reduced, the fixed connection between the circuit board and the shell is realized, the connection between the circuit board and the shell is firmer and more durable in a welding mode, the stability and the durability of the connection between the circuit board and the shell are improved, in addition, the sealing property of the shell is further improved, and the possibility of signal interference to other elements caused by leakage of the electromagnetic wave from a gap is further reduced.

According to some embodiments of the utility model, the connector is provided with a through hole extending along the axial direction, one end of the through hole is communicated with the circuit board, and the other end is communicated with the shielding layer.

According to some embodiments of the utility model, the distance between the edge of the shielding layer and the edge of the through slot is a, and the a satisfies: a is more than or equal to 2mm and less than or equal to 3mm.

According to some embodiments of the utility model, the through hole is a cylindrical through hole.

According to some embodiments of the utility model, a reinforcement member is provided at an end of the through hole facing the circuit board, an outer diameter of the reinforcement member is matched with an inner diameter of the through hole, and the reinforcement member is detachably connected with the through hole.

According to some embodiments of the utility model, a supporting portion is disposed at one end of the connecting piece, which is away from the circuit board, the supporting portion is disposed in an inclined manner in a direction away from the center of the connecting piece, the through groove is provided with a supporting inclined surface corresponding to the supporting portion, and the supporting inclined surface abuts against the supporting portion.

According to some embodiments of the utility model, an end of the connector facing the shielding layer is provided with a chamfer, which is offset from outside to inside.

According to some embodiments of the utility model, the shielding layer is one of a rubber member, a silicone member, and a foam member.

According to some embodiments of the utility model, the connecting piece is an aluminum piece or a copper piece.

According to a second aspect of the present utility model there is provided a lidar comprising a transmitting assembly as disclosed in the first aspect of the present utility model.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model is further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic diagram of an embodiment of a transmitting assembly of the present utility model;

FIG. 2 is an exploded view of one embodiment of a firing assembly of the present utility model;

FIG. 3 is a cross-sectional view of one embodiment of a firing assembly of the present utility model;

FIG. 4 is an enlarged view of FIG. 3 at A;

FIG. 5 is a top view of one embodiment of a firing assembly of the present utility model;

fig. 6 is a schematic view of a connector in an embodiment of a firing assembly according to the present utility model.

Reference numerals:

a launch assembly 1000;

a base 100; a housing 110; a through groove 111; a lumen 120; a bottom plate 130;

a circuit board 200;

a connector 300; a through hole 310; a reinforcement 320; a chamfer 330;

a shielding layer 400.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation, such as the orientation or positional relationship indicated above, below, inside, outside, etc., are based on the orientation or positional relationship shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the description of the present utility model, the description of the first and second is only for the purpose of distinguishing technical features, and should not be construed as indicating or implying relative importance or implying the number of technical features indicated or the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Some embodiments of the utility model provide a transmitting assembly 1000, particularly with reference to fig. 1-6 of the drawings of the specification.

Referring to fig. 1 and 2, in an embodiment of the present utility model, a transmitting assembly 1000 includes a base 100, a circuit board 200, a connector 300, and a shielding layer 400, wherein the base 100 may include a housing 110, and the housing 110 may enclose an inner cavity 120. Other components, such as a laser, may be disposed within the cavity 120 in addition to the circuit board 200. In the lidar, the laser may emit a laser pulse, detect a target, generate a reflected signal, and then receive and process the reflected signal by a lidar receiver. While the laser generates a large amount of heat during operation, which may negatively affect the performance and lifetime of the laser, in this embodiment, the housing 110 may have good thermal conductivity, so that heat generated by other components in the inner cavity 120 of the base 100 can be efficiently transferred to the outside of the housing 110, thereby maintaining the temperature inside the base 100 in a safe range, reducing the possibility of damage of the transmitting assembly 1000 caused by overheating, and improving the reliability and lifetime of the lidar. For example, the housing 110 may be made of a metal such as copper or aluminum.

Referring to fig. 3 and 4, in an embodiment of the present utility model, the housing 110 may be provided with a through slot 111 communicating with the inner cavity 120, wherein the through slot 111 may be located at a position corresponding to the circuit board 200 in the housing 110, that is, the through slot 111 may communicate with the circuit board 200, so that the circuit board 200 may cover the through slot 111. The outer diameter of the connector 300 may be matched with the inner diameter of the through groove 111, and thus, the connector 300 may be penetrated through the through groove 111. In the present embodiment, the outer circumferential wall of the connector 300 may be welded to the inner wall of the through groove 111, and at the same time, one end of the connector 300 facing the inner cavity 120 may be welded to the circuit board 200. It can be appreciated that the welding can form a strong crystal combination when connecting two materials, so that the connection is more firm and durable, therefore, the embodiment can use the connecting piece 300 as a medium for fixing connection, and the connection fixing of the circuit board 200 and the base 100 is further realized by the welding of the connecting piece 300 and the inner wall of the through groove 111 and the welding of the connecting piece 300 and the circuit board 200, so that the connection firmness and durability of the two are improved. In addition, the welding mode can enable no gap to exist between the circuit board 200 and the base 100, so that the sealing performance of the base 100 is improved, and the possibility of electromagnetic wave leakage is reduced. In the embodiment of the utility model, the connecting piece 300 can be an aluminum piece or a copper piece, so that the welding is convenient, and the processing difficulty is reduced.

Referring to fig. 3 and 4, in the embodiment of the present utility model, the shielding layer 400 is disposed on the housing 110 and covers the through groove 111, specifically, the shielding layer 400 may be disposed on an outer surface of the housing 110, and the shielding layer 400 may cover the through groove 111, thereby reducing the possibility of leakage of electromagnetic waves from the through groove 111. It should be noted that, the shielding layer 400 may block electromagnetic waves generated by the circuit board 200 from propagating outwards, for example, the shielding layer 400 may be an EMC-proof material, for example, the shielding layer 400 may be a conductive cloth, a conductive rubber, a conductive silica gel, or a material capable of shielding electromagnetic compatibility (Electromagnetic Compatibility, EMC). It should be noted that, the silica gel, the rubber and the foam are all materials with good shielding effect on electromagnetic waves, and therefore, in the embodiment of the present utility model, the shielding layer 400 may be one of a rubber member, a silica gel member and a foam member, which can be selected and set by a person skilled in the art according to practical situations, and the embodiment is not limited thereto.

According to the embodiment of the utility model, the through groove 111 communicated with the inner cavity 120 is formed in the shell 110, the connecting piece 300 is arranged in the through groove 111, the outer peripheral wall of the connecting piece 300 is welded and connected to the inner wall of the through groove 111, meanwhile, the connecting piece 300 is welded and connected with the circuit board 200 which is positioned in the inner cavity 120 and covers the through groove 111, so that the circuit board 200 is fixedly connected with the base 100 through the connecting piece 300, in addition, the shielding layer 400 which covers the through groove 111 is arranged, electromagnetic waves generated by the circuit board 200 are prevented from leaking outwards from the through groove 111, the possibility of leakage of the electromagnetic waves is reduced, the fixed connection between the circuit board 200 and the shell 110 is realized, the connection between the circuit board 200 and the shell 110 is firmer and durable in a welding mode, the stability and durability of the connection between the circuit board 200 and the shell 110 are improved, the tightness of the shell 110 is further improved, and the possibility of signal interference caused by leakage of the electromagnetic waves from gaps is further reduced.

Referring to fig. 3 and 4, in an embodiment of the present utility model, the connector 300 may be provided with a through hole 310 extending in an axial direction, the through hole 310 may be disposed at a central position of the connector 300, one end of the through hole 310 may communicate with the circuit board 200, and the other end may communicate with the shielding layer 400. It can be understood that there is a possibility that electromagnetic waves generated by components in the circuit board 200 leak from other positions of the housing 110, based on which, in the present embodiment, through holes 310 with two ends respectively communicating with the circuit board 200 and the shielding layer 400 may be provided in the connector 300, so that electromagnetic waves may propagate along the through holes 310 toward the shielding layer 400, that is, the through holes 310 may be provided to induce electromagnetic waves to the shielding layer 400, so as to further reduce the possibility of electromagnetic wave leakage.

Preferably, referring to fig. 5, in the embodiment of the present utility model, the distance between the edge of the shielding layer 400 and the edge of the through slot 111 may be a, where a satisfies: a is more than or equal to 2mm and less than or equal to 3mm. It is understood that the presence of the distance of 2mm-3mm between each edge of the shielding layer 400 and the edge of the through slot 111 can reduce the possibility of leakage of electromagnetic waves from the gap between the shielding layer 400 and the through slot 111.

Referring to fig. 3 and 4, in the embodiment of the present utility model, the through hole 310 may be a cylindrical through hole 310, and the cylindrical through hole 310 can ensure that the connecting piece 300 is uniformly stressed, so that local overstress of the connecting piece 300 is avoided, and reliability and service life of the connecting piece 300 are improved.

Referring to fig. 3 and 4, in the embodiment of the present utility model, a reinforcement member 320 is provided at an end of the through-hole 310 facing the circuit board 200, and an outer diameter of the reinforcement member 320 is matched with an inner diameter of the through-hole 310, so that an outer circumferential wall of the reinforcement member 320 can abut against an inner wall of the through-hole 310, thereby improving strength and stability of the connection member 300. Wherein the reinforcement 320 and the through-hole 310 may be detachably connected, thereby improving the replaceability of the reinforcement 320.

Referring to fig. 6, in the embodiment of the present utility model, a guide angle 330 may be disposed at an end of the connector 300 facing the shielding layer 400, where the guide angle 330 is offset from outside to inside, and the arrangement of the guide angle 330 can make the assembly of the reinforcement member 320 more convenient, and reduce the difficulty of placing the reinforcement member 320 into the through hole 310.

In the embodiment of the present utility model, the end of the connector 300 facing away from the circuit board 200 may be provided with a supporting portion, where the supporting portion is inclined away from the center of the connector 300, i.e. the supporting portion may expand one end of the connector 300. The through groove 111 may be provided with a supporting slope corresponding to the supporting part, and the supporting slope is abutted with the supporting part, thereby playing a role in supporting the supporting part, and further improving the connection stability of the connector 300 and the housing 110.

Embodiments of the present utility model also provide a lidar including the transmitting assembly 1000 of the above embodiments.

In the embodiment of the present utility model, the lidar may be a device for detecting the surrounding environment by emitting a laser beam and receiving reflected light, and may be, for example, a mechanical lidar, a solid-state lidar, a flash lidar, or the like. Since the laser radar adopts all the technical solutions of the transmitting assembly 1000 in the above embodiments, at least all the beneficial effects brought by the technical solutions in the above embodiments are provided, and will not be described in detail herein.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, and finally, it should be described that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A transmitting assembly, comprising:

the base comprises a shell, wherein an inner cavity is formed by surrounding the shell, and the shell is provided with a through groove communicated with the inner cavity;

the circuit board is arranged in the inner cavity and covers the through groove;

the connecting piece is penetrated through the through groove, the outer peripheral wall of the connecting piece is welded and connected to the inner wall of the through groove, and one end of the connecting piece, which faces the inner cavity, is welded and connected with the circuit board;

and the shielding layer is arranged on the shell and coated on the through groove, and is used for blocking electromagnetic waves generated by the circuit board.

2. The firing assembly of claim 1 wherein the connector is provided with an axially extending through hole having one end in communication with the circuit board and the other end in communication with the shield.

3. The emitter assembly of claim 2, wherein the shielding layer has an edge at a distance a from the edge of the through slot, the a satisfying: a is more than or equal to 2mm and less than or equal to 3mm.

4. The firing assembly of claim 2, wherein the through-hole is a cylindrical through-hole.

5. The transmitting assembly of claim 2, wherein an end of the through hole facing the circuit board is provided with a reinforcement member, an outer diameter of the reinforcement member is matched with an inner diameter of the through hole, and the reinforcement member is detachably connected with the through hole.

6. The transmitting assembly of claim 5, wherein a supporting portion is disposed at an end of the connecting piece facing away from the circuit board, the supporting portion is disposed obliquely in a direction away from a center of the connecting piece, the through groove is provided with a supporting inclined surface corresponding to the supporting portion, and the supporting inclined surface abuts against the supporting portion.

7. The firing assembly of claim 1 wherein an end of the connector facing the shield is provided with a chamfer, the chamfer being offset from outside to inside.

8. The firing assembly of claim 1 wherein the shielding layer is one of a rubber member, a silicone member, and a foam member.

9. The firing assembly of claim 1 wherein the connector is an aluminum or copper piece.

10. A lidar comprising a transmitting assembly according to any of claims 1 to 9.