JP3430288B2 - Terminal connection structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal connecting structure suitable for abutting and connecting terminals of electronic parts to connection patterns on a substrate.

[0002]

2. Description of the Related Art Conventionally, solder, low-temperature solder, conductive adhesive or the like has been used to connect a metal terminal protruding from a main body of an electronic component such as a light emitting element to a connection pattern of a substrate, especially a flexible substrate. It was However, in these fixing methods, since the flexible substrate is easily bent, the fixing strength is weak.

Therefore, a method of mechanically and securely fixing the metal terminal of the electronic component to the flexible substrate has been considered.
That is, for example, the metal terminal of the electronic component and the connection pattern of the flexible substrate are brought into contact with each other, and the connection is made by mechanically pressure-contacting the metal terminal and the flexible substrate with pressure contact members arranged above and below the contact pattern. Is.

[0004]

However, in the case of the above-mentioned fixing method by mechanical pressure welding, the number of parts is large and the assembly is complicated. Also, when trying to press contact between the metal terminal and the flexible substrate with a predetermined elastic force applied,
Although elastic rubber must be interposed, this further increases the number of parts, complicates the structure, complicates assembly, and increases manufacturing costs.

The present invention has been made in view of the above-mentioned points, and an object thereof is a simple structure, a small number of parts, easy assembly, and reliable pinching between a terminal and a substrate by a predetermined elastic force. -To provide a terminal connection structure that can be connected.

[0006]

To solve the above problems SUMMARY OF THE INVENTION The present invention provides a terminal that protrudes from the main body of the electronic component, off
In a terminal connection structure that abuts and is connected to the connection pattern of the flexible board, a mounting member provided with a resilient portion ,
Place the flexible board, terminals, and mounting members
Main body part for fixing the main body part of the electronic component in addition to the mounting part
A mounting base provided with a fixing portion ,
While fixing the main body to the main body fixing portion of the mounting base,
Mounted on the mounting part of the mounting base with the connection pattern of the flexible board and the terminal of the electronic component abutted and connected.
It is characterized in that the mounting member is placed on and pressed against the corresponding contacting / connecting portion, whereby the terminal and the connection pattern are pressed against each other by the resilient portion provided on the mounting member. Further, the mounting member is fixed to the mounting base by a sandwiching means.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an exploded perspective view showing an embodiment in which the terminal connection structure according to the present invention is applied to a portion for connecting the metal terminals 71, 71 of the light emitting element 70 to the connection patterns 33, 33 of the flexible substrate 30.

As shown in the figure, this terminal connection structure has a flexible substrate 3 with an insulating sheet 39 on the mount 10.
0, the light emitting element 70, and the plate spring (mounting member) 50 are mounted, and the plate spring 50 is fixed to the mount 10. Each component will be described below.

The mounting base 10 is a synthetic resin molded product, and is constructed by arranging side walls 13 upright on the outer periphery of the bottom plate 11. A rectangular opening 15 is provided at one end of the bottom plate 11.
Further, protrusions 19 and 19 are provided in the notched portions of the side wall 13 at positions opposite to the left and right of the side wall 13 where the flexible substrate 30 is placed. Both sides of the projections 19, 19 are locking grooves 21, 21. Also, the opening 15
Locking claws 23, 23 are provided on the inner side surfaces of the left and right side walls 13, 13 of the portion provided with, respectively. The portion where the opening 15 is provided is the main body fixing portion A of the electronic component, and the portion of the bottom plate 11 on which the flexible substrate 30 is mounted is the mounting portion B.

Next, the flexible substrate 30 is provided with two parallel connection patterns 33 on the surface of a flexible synthetic resin film 31 formed in an elongated shape so as to be placed on the bottom plate 11 of the mount 10. 33 is formed by printing. An insulating layer 35 is provided at the root of the connection patterns 33, 33.
Are printed.

Further, a protrusion 37 and a projecting bent portion 36 are provided at positions on both sides of the flexible substrate 30 which face the projections 19, 19, and the bent portion 36 has a connection pattern of the flexible substrate 30. An insulating sheet (insulating member) 39 having a shape covering the portions where the 33 and 33 are formed constitutes the flexible substrate 30 and is a synthetic resin film 31.
And the same sheet. Protrusions 38 are also provided at opposite positions on the side of the insulating sheet 39 opposite to the side on which the bent portion 36 is provided.

The light emitting element 70 is constructed by projecting two metal terminals (terminals) 71 from a main body 73 which emits light.

The leaf springs 50 are made of an elastic metal plate such as SUS, and two resilient arms 53 project from two opposite sides of the rectangular base 51, and two resilient arms 53 project from the other two sides. Claw-shaped locking portions 55 (only three of which are shown in the figure) are projected. Each of the elastic arms 53 is bent at the connecting portion with the base portion 51 so as to be inclined downward at a predetermined angle, and the tip of the elastic arm 53 is an elastic portion 57. Each locking portion 55 is bent downward from the base portion 51 at a substantially right angle.

Next, a method of assembling the above-mentioned members will be described. First, the flexible board 3 is mounted on the bottom plate 11 of the mounting base 10.
0 is placed, and then the light emitting element 30 is housed in the mount 10 so that the metal terminals 71, 71 of the light emitting element 70 are connected to the connection patterns 33, 33 of the flexible substrate 30.
At this time, the main body 73 is snapped in and fixed to the lower side of the two locking claws 23, 23 while pushing the two locking claws 23, 23 open, and the lower surface (light emitting surface) of the main body 73 is exposed in the opening 15. To do.

Next, the connection patterns 33, 33 of the flexible board 30 and the metal terminals 71, 7 placed thereon.
The insulating sheet 39 is bent and covered at the bent portion 36 so as to cover 1. And cover the leaf spring 50 from above,
Insert two left and right locking portions 55 into the locking grooves 21, 21 on both sides of the protrusions 19, 19 of the mounting base 10, respectively, and direct the tips of each locking portion 55 inward on the lower surface of the mounting base 10. Bend and fix. At this time, since the overlapping projections 37 and 38 of the flexible substrate 30 and the bent portion 36 protruding by bending are sandwiched between the left and right engaging portions 55 and 55, the flexible substrate 30 can be positioned at the same time.

FIG. 2 is a side sectional view of the main part of the terminal connection structure portion (mounting portion B portion) assembled as described above. As shown in FIG. 1 and FIG. 1, the leaf spring 50 is attached to the mount 1.
The flexible board 30 and the metal terminals 71, 71 are sandwiched by mounting the flexible board 30 on the insulating sheet 39 from the top of the insulating sheet 39. Are pressed at two points respectively, and both metal terminals 71, 71 and both connection patterns 33, 33 are pressed.
I try to press the spaces together. Therefore, it is possible to surely connect the both.

Although one embodiment of the present invention has been described in detail above, the present invention is not limited to this embodiment, and various modifications such as the following are possible. Although the light emitting element 70 is used as the electronic component in the above-described embodiment, other various electronic components may be any structure as long as the terminal is projected from the main body.

In the above embodiment, the mounting base 10 and the leaf spring 5 are used.
Although a method of locking the locking portion 55 provided on the plate spring 50 on the lower surface of the mounting base 10 was used as a clamping means for clamping the zero distance,
On the contrary, the holding means has a protrusion protruding from the mount 10 for the leaf spring 5.
Various modifications are possible, such as fixing to 0, or sandwiching between the mount 10 and the leaf spring 50 by using a sandwiching tool that is a member separate from the mount 10 and the leaf spring 50.

In the above embodiment, the two metal terminals 71, 7 are provided by the four resilient portions 57 provided on the leaf spring 50.
1 is repulsed at two places each, but it is also possible to provide only two repulsion portions 57 so that each of the metal terminals 71, 71 is repulsed at one position, or at least three positions. You may make it explode. In the above-described embodiment, two bullets are repelled in order to reliably repel two of them even if one of them is not sufficient. If the leaf spring 50 is formed of an insulating member instead of metal, the insulating member (insulating sheet 39) is not necessary. The point is that the mounting member (leaf spring 50) may have any shape and structure as long as it has a structure in which the terminal and the connection pattern are pressed against each other by the resilient portion provided on the mounting member (leaf spring 50).

The flexible substrate 30 may be a hard substrate. In that case, since the hard substrate acts as the mounting base 10, the mounting base 10 is not always necessary. That is, in this case, the mounting member (leaf spring 50) is directly fixed to the substrate (hard substrate) by the sandwiching means (locking portion 55).

[0021]

As described above in detail, according to the present invention, the structure is simple, the number of parts is small, the assembly is easy, and the terminal and the board are securely clamped and connected by a predetermined elastic force. It has an excellent effect of being able to.

When the mounting base is provided with a main body fixing portion for fixing the main body portion of the electronic component in addition to the mounting portion, the fixing of the entire electronic component can be performed simultaneously with the fixing between the metal terminal and the substrate by the same mounting base. It has an excellent effect that it can be performed.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment in which a terminal connection structure according to the present invention is applied to a portion for connecting metal terminals 71, 71 of a light emitting element 70 to connection patterns 33, 33 of a flexible substrate 30.

FIG. 2 is a side sectional view of an essential part of an assembled terminal connection structure portion.

[Explanation of symbols]

10 mounting base 11 bottom plate 13 Side wall 15 openings 30 Flexible substrate (substrate) 33,33 connection pattern 36 Bend 39 Insulation sheet (insulation member) 50 leaf spring (mounting member) 55 Locking part (clamping means) 57 bullet 70 Light-emitting element (electronic component) 71,71 Metal terminal (terminal) 73 Main body A Main body fixed part B mounting section

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-61-198641 (JP, A) JP-A-63-305588 (JP, A) JP-A-57-88683 (JP, A) Actual development Sho-58- 89943 (JP, U) Actually developed 55-120170 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) H05K 1/18

Claims (2)

(57) [Claims] 1. A terminal projecting from a main body of an electronic component,
In a terminal connection structure for abutting and connecting to a connection pattern of a flexible board, a mounting member having a resilient portion and the flexible board, the terminal and the mounting member are placed.
Main body part for fixing the main body part of the electronic component in addition to the mounting part
A mounting base provided with a fixing part, and the main body of the electronic component is fixed to the main body fixing part of the mounting base.
In addition, the connection pattern of the flexible board and the terminals of the electronic component are placed in contact with and connected to the mounting portion of the mounting base.
A terminal connection structure, characterized in that the mounting member is placed and pressed against the corresponding contacting / connecting portion so that the terminal and the connection pattern are pressed into contact with each other by a resilient portion provided on the mounting member. Mount by wherein said attachment member is sandwiched means
The terminal connection structure according to claim 1, wherein the terminal connection structure is fixed to the terminal connection structure.