WO2020134694A1

WO2020134694A1 - Vehicle-mounted camera with metal front shell welded by laser in penetrating manner

Info

Publication number: WO2020134694A1
Application number: PCT/CN2019/119038
Authority: WO
Inventors: 王亚军; 邓博; 增田悟; 赵木祯; 赵敬红
Original assignee: 苏州智华汽车电子有限公司
Priority date: 2018-12-25
Filing date: 2019-11-17
Publication date: 2020-07-02
Also published as: CN109413320B; CN109413320A

Abstract

Provided is a vehicle-mounted camera with a metal front shell welded by laser in a penetrating manner. A front shell and a rear shell of the camera are welded together, without the need to add an additional waterproof component, such that outside water is thoroughly prevented from entering the interior of a body, the overall heat dissipation performance is good, and external electromagnetic interference can be shielded. The camera comprises a front shell, a rear shell, and a sensor base plate, wherein the front shell and the rear shell are both made of a metal material; a front end of the front shell is fixedly provided with a front convex lens; an inner groove is provided in the periphery, for positioning a rear end face of a lateral convex end of the rear shell, of the front shell; a front end face, corresponding to the inner groove, of the lateral convex end is a plane; the portion, facing the inner groove, of the rear shell is a protrusion positioning portion; the sensor base plate is fixedly mounted on a rear-end base plate mounting member of the front shell; a rear-end connecting member of the sensor base plate is arranged backwards; the protrusion positioning portion of the rear shell is embedded in the inner groove of the front shell and is connected through laser penetration-type welding to form a closed weld joint; and the sensor base plate and the rear-end connecting member are located in a mounting cavity formed after the rear shell covers the front shell.

Description

Vehicle-mounted camera for penetration welding of metal laser front shell

Technical field

The invention relates to the technical field of a vehicle-mounted camera, in particular to a vehicle-mounted camera with a penetration welding of a metal laser back shell.

Background technique

In the existing car camera, the back shell and the front shell are connected with screws and the compression seal pads are locked to achieve the waterproofing of the front and rear shells. Both the back shell and the front shell are injection molded with a plastic structure, and at the same time, the back shell squeezes the inner shell, The inner shell squeezes the lens, the inner ring of the mounting hole of the lens and the front shell is provided with an O-ring, so as to realize the waterproof of the front shell and the lens, the heat of the sensor located in the inner cavity can only be slowly conducted to the outside through the external plastic parts, this structure It has the following disadvantages: the gasket and O-ring are easily deformed, which leads to waterproof failure; the sensor's heat dissipation is slow, the temperature rise is too high, which leads to serious image noise and even defocusing; the overall structure has no shielding performance and is greatly affected by external electromagnetic interference , Affecting the stability of the image.

Summary of the invention

In view of the above problems, the present invention provides a metal laser front shell penetration welding vehicle camera, the front shell and the rear shell are welded together, no additional waterproof parts are needed, and the external moisture is completely blocked from entering the body. The overall Good heat dissipation performance, and can shield external electromagnetic interference.

An on-vehicle camera for penetration welding of a metal laser front shell, characterized in that it includes a front shell, a rear shell and a sensor substrate, the front shell and the rear shell are made of metal, and the front end of the front shell is fixedly provided A front convex lens, an inner groove is provided on the outer periphery of the rear end surface of the side convex end of the front case for positioning the rear case, the front end face of the side convex end corresponding to the inner groove is flat, and the rear case The part facing the inner groove is positioned by protrusions, the sensor substrate is fixed on the rear-end substrate mounting member of the front case, the rear-end connector of the sensor substrate is arranged rearward, and the rear case The convex positioning is embedded in the inner groove of the front case, and is connected by laser penetration welding to form a closed welding seam. The sensor substrate and the rear end connector are located behind the rear case cover and the front case. Cavity.

Further features are:

The rear surface of the rear shell is provided with a rear convex external interface. When the rear shell cover is installed in the front shell, the rear end connector is positioned and inserted into the rear convex external interface, so that the data of the sensor substrate Convenient transmission to the outside through the line;

The laser penetration welding transmits the thermal energy of light through the front end surface of the side convex end to the mutual contact surface of the convex positioning ring and the inner concave ring groove;

The thickness of the side convex end is 0.4 mm to 2 mm, which ensures effective and reliable laser penetration welding.

After adopting the invention, the front shell and the rear shell are welded together by laser penetration welding without adding additional waterproof parts to completely isolate the external moisture from entering the body. Since the front shell and the rear shell are made of metal, the overall Good heat dissipation performance, and can shield external electromagnetic interference.

BRIEF DESCRIPTION

1 is a schematic diagram of the front sectional view of the present invention;

The names corresponding to the serial numbers in the figure are as follows:

Front case 1, rear case 2, sensor substrate 3, front convex lens 4, side convex end 5, front end surface 51, inner groove 6, convex positioning 7, rear substrate mounting member 8, rear connector 9, installation Cavity 10, rear convex external interface 11.

detailed description

A metal laser front shell penetration welding vehicle camera, see Figure 1: It includes a front shell 1, a rear shell 2, a sensor substrate 3, the front shell 1, the rear shell 2 are made of metal material, the front end of the front shell 1 is fixed The front convex lens 4 is provided. The outer periphery of the rear end surface of the side convex end 5 of the front case 1 for positioning the rear case 2 is provided with an inner groove 6. The front end surface 51 of the side convex end 5 corresponding to the inner groove 6 is flat , The part of the rear housing 2 facing the inner groove 6 is the convex positioning 7, the sensor substrate 3 is fixed on the rear substrate mounting member 8 of the front housing 1, and the rear connector 9 of the sensor substrate 3 is arranged rearward. The convex positioning 7 of the shell 2 is embedded in the inner groove 6 of the front shell 1, and is connected by laser penetration welding to form a closed weld. The sensor substrate 3 and the rear connector 9 are located on the rear shell 2 and closed Inside the installation cavity 10 behind the front shell 1.

The rear surface of the rear shell 2 is provided with a rear convex external interface 11, when the rear shell 2 is mounted on the front shell 1, the rear connector 9 is positioned and inserted into the rear convex external interface 11, so that the data of the sensor substrate 3 can be easily passed through the circuit Transfer to the outside;

Laser penetration welding transmits the thermal energy of light through the front end surface 51 of the side convex end 5 to the mutual contact surface of the convex positioning 7 and the inner groove 6;

The thickness of the side convex end 5 is 0.4 mm to 2 mm, which ensures effective and reliable laser penetration welding.

Weld the front and back shells together by laser penetration welding without adding additional waterproof parts to completely isolate the external moisture from entering the body. Since the front and back shells are made of metal, the overall heat dissipation performance is good, and Can shield external electromagnetic interference.

The specific embodiments of the present invention have been described in detail above, but the content is only the preferred embodiments created by the present invention and cannot be considered as limiting the scope of implementation of the invention. All equal changes and improvements made in accordance with the scope of the invention-creation application shall still fall within the scope of this patent.

Claims

An on-vehicle camera for penetration welding of a metal laser front shell, characterized in that it includes a front shell, a rear shell and a sensor substrate, the front shell and the rear shell are made of metal, and the front end of the front shell is fixedly provided A front convex lens, an inner groove is provided on the outer periphery of the rear end surface of the side convex end of the front case for positioning the rear case, the front end face of the side convex end corresponding to the inner groove is flat, and the rear case The part facing the inner groove is positioned convexly, and the sensor substrate is fixedly mounted on the rear-end substrate mounting part of the front case, the rear-end connector of the sensor substrate is arranged rearward, and the rear case The convex positioning is embedded in the inner groove of the front case, and is connected by laser penetration welding to form a closed welding seam, and the sensor substrate and the rear end connector are located behind the rear case cover and the front case are installed Cavity.
The vehicle-mounted camera for penetration welding of a metal laser front shell according to claim 1, wherein a rear convex external interface is provided on the rear end surface of the rear shell, and the rear shell cover is mounted on the front shell At this time, the back-end connector is positioned and inserted into the external connection of the rear convex, so that the data of the sensor substrate is conveniently transmitted to the outside through the line.
The on-vehicle camera of the metal laser front shell penetration welding according to claim 1, wherein the laser penetration welding transmits the thermal energy of light to the convex positioning ring and the concave through the front end surface of the side convex end The contact surfaces of the ring grooves.
The on-vehicle camera for penetration welding of a metal laser front shell according to claim 3, wherein the thickness of the side convex end is 0.4 mm to 2 mm.