CN210168287U

CN210168287U - Automobile lamp reinforcing plate, flexible plate and connector connecting structure

Info

Publication number: CN210168287U
Application number: CN201822231114.3U
Authority: CN
Inventors: 成生伟
Original assignee: Jiangsu Deyi Xiangyu Photoelectric Technology Co Ltd
Current assignee: Jiangsu Deyi Xiangyu Photoelectric Technology Co Ltd
Priority date: 2018-12-28
Filing date: 2018-12-28
Publication date: 2020-03-20
Anticipated expiration: 2028-12-28

Abstract

The utility model discloses car light stiffening plate, flexbile plate and connector connection structure, through the second pad on the quad slit part wicking of first pad to FR-4 two-sided stiffening plate on the FPC flexbile plate, can increase and cut straightly formula connector and FPC flexbile plate, FR-4 two-sided stiffening plate welded fastening connection area, improve the welded fastening connection reliability of pencil connector and FR-4 two-sided stiffening plate, FPC flexbile plate, can not become flexible because of vibrations, fracture, drop, the circuit operation is stable, LED reliable operation.

Description

Automobile lamp reinforcing plate, flexible plate and connector connecting structure

Technical Field

The utility model relates to a connection structure that is arranged in FR-4 stiffening plate, FPC flexbile plate and connector of car light.

Background

The human beings are continuously advancing, the society is continuously developing, the requirements of people on electronic products are higher and higher, the management and control of the production process are more and more important, a plurality of problems can be solved in the production process, and the reliability and the production efficiency of the products are realized through a special mode or method; the automobile lamp product is usually designed to have too large heat productivity of an LED, heat dissipation treatment needs to be carried out on an LED lamp bead, auxiliary heat dissipation is generally carried out by adding a heat dissipation aluminum piece, but a driving aluminum piece and the heat dissipation aluminum piece are required to be arranged on a light source plate part to be connected with each other, various connection modes have corresponding advantages and disadvantages, for example, the vertical attaching mode has the advantages of convenience for production and assembly, improvement of production efficiency and production cost saving, and the disadvantage of poor reliability of the product; and through the welded fastening connection mode, the formula connector that cut straightly welds on light source board and FR-4 double-sided stiffening plate, but the formula connector that cuts straightly can not set up the aluminium stiffening plate that has electrically conductive ability simultaneously, can only adopt FR-4 stiffening plate, and FR-4 stiffening plate is connected the difficulty with the FPC flexbile, and it is unreliable only to paste the connection through the double faced adhesive tape, and the FPC flexbile is easily torn, leads to the circuit to break, and LED can not normally work.

Disclosure of Invention

The utility model aims to solve the technical problem that a can increase and cut straightly formula connector and light source board, FR-4 two-sided stiffening plate welded fastening connection area, improve welded fastening connection reliability, can not become flexible because of vibrations, fracture, drop, car light stiffening plate, flexbile plate and connector connection structure.

The utility model discloses car light stiffening plate, flexbile plate and connector connection structure, including formula connector, FR-4 double-sided stiffening plate and FPC flexbile plate cut straightly, its characterized in that: the FPC flexible board is provided with a plurality of first bonding pads which can be fixedly connected with the direct-insert connector through welding, each first bonding pad comprises a first elliptical hole outer hole with the diameter of 1.5mm multiplied by 2mm and a first circular inner hole with the diameter of 1mm multiplied by 1mm, the first bonding pad further comprises a rectangular hole with the diameter of 1mm multiplied by 1mm, the rectangular hole extends downwards from the horizontal central axis of the first circular inner hole, and the bottom edge of the rectangular hole extends to the outside of the first elliptical hole outer hole; a plurality of second bonding pads with the same number are arranged on the FR-4 double-sided reinforcing plate and at the corresponding position of each first bonding pad of the FPC flexible plate, each second bonding pad comprises a second elliptical hole outer hole with the size of 1.5mm multiplied by 2mm and a second circular inner hole with the size of 1mm multiplied by 1mm, so that after the FPC flexible plate is pasted on the FR-4 double-sided reinforcing plate, a connector terminal part can sequentially penetrate through the second circular inner hole of the FR-4 double-sided reinforcing plate and the first circular inner hole of the FPC flexible plate from the lower part of the FR-4 double-sided reinforcing plate to extend to the upper part of the FPC flexible plate and is tin-infiltrated to the second bonding pad through the rectangular hole of the first bonding pad, and the connector terminal is fixedly connected with the FR-4 double-sided reinforcing plate and the FPC flexible plate in a welding mode;

the second bonding pad, the second elliptical hole outer hole and the second circular inner hole penetrate from the top surface to the bottom surface of the FR-4 double-sided reinforcing plate, the diameter of the plug connector terminal is smaller than that of the plug connector main body, and a limiting step capable of being matched with the bottom surface of the FR-4 double-sided reinforcing plate for limiting is formed;

the bottom edge of the rectangular hole extends to a position corresponding to a lower quadrant point of a long axis of the first elliptical outer hole;

the height of the bottom edge of the rectangular hole extending to the outer part of the first elliptical outer hole is 1/6-1/3 of the diameter of the first circular inner hole;

1/6 the height of the bottom edge of the rectangular hole extending to the outside of the first elliptical outer hole is equal to the diameter of the first circular inner hole;

the width of the plug terminal is 0.9 mm.

Drawings

FIG. 1 is a schematic diagram of a planar structure of a first bonding pad on a FPC flexible board of a vehicle lamp stiffening plate, a flexible board and a connector connection structure according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a planar structure of a second bonding pad on an FR-4 double-sided stiffening plate of the stiffening plate, a flexible plate and a connector connection structure of the automotive lamp according to the embodiment of the present invention;

FIG. 3 is a schematic plane structure diagram of a first bonding pad and a second bonding pad after the FPC flexible board of the automobile lamp stiffening plate, the flexible board and the connector connecting structure of the embodiment of the invention is pasted on the FR-4 double-sided stiffening plate;

FIG. 4 is a schematic diagram of a planar structure of a connector terminal of the stiffening plate, the flexible plate and the connector connection structure of the vehicle lamp according to the embodiment of the present invention;

fig. 5 to 7 are schematic structural diagrams of the connector terminal of the automobile lamp reinforcing plate, the flexible plate and the connector connecting structure according to the embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a rear plane of a car lamp reinforcing plate, a flexible plate and a connector connecting structure which are fixedly connected by welding according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of a reinforcing plate, a flexible plate and a connector connection structure of an automobile lamp according to an embodiment of the present invention;

in fig. 1, the size of a first bonding pad on the FPC board is 1.5mm × 2mm, the size of an inner hole is a circular hole of 1mm, and a square hole of 1mm × 1mm is formed on the bonding pad;

in FIG. 2, the second bonding pad of the FR-4 double-sided stiffener has a size of 1.5mm × 2mm, and the inner hole has a circular hole with a size of 1 mm;

FIG. 3 is a diagram illustrating the effect of FPC flexible board applied on the FR-4 double-sided stiffener;

in fig. 4, the connector terminal is shown with a width of 0.9 mm.

Detailed Description

As shown in the figure, the automobile lamp reinforcing plate, the flexible plate and the connector connecting structure comprise an in-line connector 3, an FR-4 double-sided reinforcing plate 2 and an FPC flexible plate 1, wherein a plurality of first welding pads 11 capable of being fixedly connected with the in-line connector through welding are arranged on the FPC flexible plate 1, each first welding pad 11 comprises a first elliptical hole outer hole 12 with the diameter of 1.5mm multiplied by 2mm and a first circular inner hole 13 with the diameter of 1mm multiplied by 1mm, the first welding pad 11 further comprises a rectangular hole 14 with the diameter of 1mm multiplied by 1mm, the horizontal central shaft of the first circular inner hole 13 extends downwards, and the bottom edge of the rectangular hole 14 extends to the outer part of the first elliptical hole 12; a plurality of second bonding pads 21 with the same number are arranged on the FR-4 double-sided reinforcing plate 2 at the corresponding positions of each first bonding pad 11 of the FPC flexible plate 1, each second bonding pad 21 comprises a second elliptical hole outer hole 22 with the size of 1.5mm multiplied by 2mm and a second circular inner hole 23 with the size of 1mm multiplied by 1mm, so that after the FPC flexible plate 1 is pasted on the FR-4 double-sided reinforcing plate 2, a plug connector terminal 32 can sequentially penetrate through the second circular inner hole 23 of the FR-4 double-sided reinforcing plate 2 and the first circular inner hole 13 of the FPC flexible plate 1 from the lower part of the FR-4 double-sided reinforcing plate 2 to extend to the upper part of the FPC flexible plate 1 and penetrate into the second direct insertion type bonding pad 21 through the rectangular hole 14 of the first bonding pad 11, so that the plug connector terminal 32 is fixedly connected with the FR-4 double-sided reinforcing plate 2 and the FPC flexible plate 1 at the same time, and the connector and the FPC flexible plate are additionally arranged, The welding and fixing connection area of the FR-4 double-sided reinforcing plate ensures the welding and fixing connection strength of the wiring harness connector, the FR-4 double-sided reinforcing plate and the FPC flexible board.

The second elliptical hole outer hole 22 and the second circular inner hole 23 of the second bonding pad 21 penetrate through the top surface of the FR-4 double-sided reinforcing plate 2 to the bottom surface, the diameter of the connector terminal 32 is smaller than the diameter of the connector main body 31 to form a limiting step capable of being matched with the bottom surface of the FR-4 double-sided reinforcing plate 2 in a limiting mode, the limiting step serves as the bottom limiting surface and the welding connection surface of welding connection, soldering tin flows to the root of the connector terminal from a square hole and the space between the first elliptical hole outer hole and the first circular inner hole, and the root of the connector terminal upwards until a welding spot 5 is formed outside the connector terminal, so that the connector, the FR-4 reinforcing plate and the FPC flexible plate are fixedly connected into an integral structure at the same time, and welding connection is.

The rectangular hole base extends to the corresponding position of the quadrant point under the long axis of the first elliptical outer hole, so that the soldering tin can be conveniently infiltrated to the second bonding pad along the space between the square hole of the first bonding pad, the first elliptical outer hole and the first circular inner hole, and the main body strength of the FPC flexible board is ensured.

The height that the rectangular hole base extends to the outside of first oval outer hole is 1/6 ~ 1/3 not first circular hole diameter, specifically, the height that the rectangular hole base extends to the outside of first oval outer hole is not 1/6 of first circular hole diameter, neither can destroy FPC flexbile plate intensity, the soldering tin circulation of being convenient for simultaneously.

The width of the plug-in terminal is 0.9mm, and a gap of 0.05mm is formed between the outer surface of the plug-in terminal and a first circular inner hole of 1mm multiplied by 1mm of a second circular inner hole FPC flexible board of 1mm multiplied by 1mm of an FR-4 double-sided reinforcing plate, so that soldering tin can permeate conveniently.

The utility model discloses car light stiffening plate, flexbile plate and connector connection structure, through the second pad on the square hole part wicking of first pad to FR-4 two-sided stiffening plate on the FPC flexbile plate, can increase and cut straightly formula connector and light source board, FR-4 two-sided stiffening plate welded fastening connection area, improve the welded fastening connection reliability of pencil connector and FR-4 two-sided stiffening plate, FPC flexbile plate, can not become flexible because of vibrations, fracture, drop, the circuit operation is stable, LED reliable operation.

The specific design concept is as follows:

the human beings are continuously advancing, the society is continuously developing, the requirements of people on electronic products are higher and higher, and the management and control of the production process are more and more important. Many problems are encountered in the production process and need to be solved, and the reliability and the production efficiency of the product are realized through a special mode or a special method. The design of automobile lamp products often meets the situation that the heat productivity of an LED is too large, and the LED lamp bead needs to be subjected to heat dissipation treatment, namely a heat dissipation aluminum piece. However, the light source plate part needs to be provided with a drive to be connected with the light source plate part, and the connection modes are various and have advantages and disadvantages. For example, the vertical stickers are used for connection, so that the vertical stickers have the advantages of convenience in production, capability of improving efficiency and saving production cost, and have the defect that the reliability of products is possibly poor, and in the automobile industry, an automobile can normally run under any complex environmental condition. There is vibrations at the in-process of traveling, and this just leads to the pencil to rock in the inside of lamp body, and then opposite subsides connect the plug-in components to have an effort, can break the connector for the product damages. The other connection mode is a welding mode, and a direct-insert connector is welded on the light source board and the FR-4 double-sided reinforcing board.

In an automobile lamp LED module, the problem of LED heating always exists, and a method for thoroughly solving the problem is not provided, but a general method is to add a heat-conducting aluminum piece behind an LED to increase the heat dissipation area. In order to better connect the LED lamp beads with the heat dissipation aluminum part, an aluminum reinforcing plate is added on the FPC board. But when I use the formula connector that cut straightly just can not aluminium stiffening plate, aluminum plate can electrically conduct, can only use FR-4 double-sided stiffening plate, but with the connection of FR-4 double-sided stiffening plate and FPC flexbile plate again be a problem, light is to lean on the double faced adhesive tape to glue not firm, will lead to FPC flexbile plate to tear like this, and the circuit is obstructed, and LED can't normally work. It is desirable to have the FPC flex and FR-4 double-sided stiffener joined together as closely as possible. The first point is as follows: the special glue is used, so that the connection between the glue and the base plate is firmer, and the heat conducting property is required to be good. And a second point: the connection between the FPC flexible board and the FR-4 double-sided reinforcing plate and the direct-insert connector is increased through the special pad design. This is the focus of our utility model patent. FIG. 1 is a schematic diagram of an FPC flexible board, the packaging form of a bonding pad is specially changed, a square hole of 1mm multiplied by 1mm is formed on the basis of an original elliptical hole outer hole of 1.5mm multiplied by 2mm and an original elliptical hole inner hole of 1mm multiplied by 1mm, and the welding area of the bonding pad on an FR-4 double-sided reinforcing board is increased. FIG. 3 is a schematic diagram of the FPC flexible board and the FR-4 double-sided board after superposition, and the non-superposed part of the bonding pad is the place for increasing the connection strength. And fig. 5-7 are the terminal size of the direct plug-in connector, the width of the terminal is 0.9mm, and there is a gap between the connector terminal and the FR-4 double-sided reinforcing plate and the FPC flexible plate, because of the double-sided plate, the inner hole of the bonding pad can be tin-infiltrated, so the connection strength will be stronger, as the schematic drawing shown in fig. 6, the green shaded part is the tin-infiltrated part. The design is to ensure that the wiring harness connector is firmer under the condition of ensuring the normal electrical performance of the product.

The advantages are that:

the utility model discloses a design is exactly in the mode that makes the product the most firm welding connector under the normal condition of electrical property, and the product fixed connection that makes can not shake the connector because of vibrations and break inside the car.

Key and protection points:

and (3) processing the welding connection mode among the FPC flexible board, the FR-4 double-sided reinforcing plate and the direct-insert connector.

Claims

1. The utility model provides a car light stiffening plate, flexbile plate and connector connection structure, includes and cut straightly formula connector, FR-4 double-sided stiffening plate and FPC flexbile plate, its characterized in that: the FPC flexible board is provided with a plurality of first bonding pads which can be fixedly connected with the direct-insert connector through welding, each first bonding pad comprises a first elliptical hole outer hole with the diameter of 1.5mm multiplied by 2mm and a first circular inner hole with the diameter of 1mm multiplied by 1mm, the first bonding pad further comprises a rectangular hole with the diameter of 1mm multiplied by 1mm, the rectangular hole extends downwards from the horizontal central axis of the first circular inner hole, and the bottom edge of the rectangular hole extends to the outside of the first elliptical hole outer hole; a plurality of second bonding pads with the same number are arranged on the FR-4 double-sided reinforcing plate and at the corresponding positions of each first bonding pad of the FPC flexible plate, each second bonding pad comprises a second elliptical hole outer hole with the size of 1.5mm multiplied by 2mm and a second circular inner hole with the size of 1mm multiplied by 1mm, so that after the FPC flexible plate is pasted on the FR-4 double-sided reinforcing plate, the plug connector terminal part can sequentially penetrate through the second circular inner holes of the FR-4 double-sided reinforcing plate from the lower part of the FR-4 double-sided reinforcing plate and extend out of the upper part of the FPC flexible plate through the first circular inner holes of the FPC flexible plate, and tin is infiltrated into the second bonding pad through the rectangular holes of the first bonding pads, so that the plug connector terminal is fixedly connected with the FR-4 double-sided reinforcing plate and the FPC flexible plate in a welding mode.

2. The automobile lamp reinforcing plate, flexible plate and connector connecting structure according to claim 1, characterized in that: the bottom edge of the rectangular hole extends to a position corresponding to a lower quadrant point of the long axis of the first elliptical outer hole.

3. The automobile lamp reinforcing plate, flexible plate and connector connecting structure according to claim 1, characterized in that: the second bonding pad second elliptical hole outer hole and the second circular inner hole penetrate through the top surface to the bottom surface of the FR-4 double-sided reinforcing plate, the diameter of the connector clip terminal is smaller than the diameter of the connector clip main body, and a limiting step capable of being matched with the bottom surface of the FR-4 double-sided reinforcing plate for limiting is formed.

4. The automobile lamp reinforcing plate, flexible plate and connector connecting structure according to claim 1, characterized in that: the height that the bottom edge of the rectangular hole extends to the outside of the first elliptical outer hole is 1/6-1/3 of the diameter of the first circular inner hole.

5. The automobile lamp reinforcing plate, flexible plate and connector connecting structure according to claim 1, characterized in that: the height of the bottom edge of the rectangular hole extending to the outside of the first elliptical outer hole is 1/6 the diameter of the first circular inner hole.

6. The automobile lamp reinforcing plate, flexible plate and connector connecting structure according to claim 1, characterized in that: the width of the plug connector terminal is 0.9 mm.