JP3174272B2 - Connection terminal for board - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a board connection terminal used by being attached to a board such as a printed board.

[0002]

2. Description of the Related Art FIG. 3 shows a connection terminal for a board similar to that described in Japanese Utility Model Laid-Open No. 1-130271. This terminal 1
Is a box-shaped receiving cylinder portion 2 formed of sheet metal and receiving the mating tab 20, and a part of the receiving cylinder portion 2 is folded back to receive the receiving cylinder portion 2.
A pair of elastic holding pieces 3, 3 integrally provided in
And a lead terminal 6 for a substrate integrally extended from an opposite side wall 2 a at an end portion thereof via an elastic bending portion 5.

The board connection terminal 1 is mounted on a board 10. The substrate 10 has an insertion hole 1 for the lead terminal 6.
The terminal 1 is attached to the substrate 10 by inserting each lead terminal 6 into the insertion hole 11 and soldering. The hole 12 for penetration is formed to be larger than the thickness of the mating tab 20 to the extent that the solder does not block the hole 12 due to a capillary phenomenon during the flow soldering process.

When assembling the board 10 to which the terminals 1 are fixed to an electric connection box or the like, a mating tab 20 formed on a bus bar or the like of the electric connection box is inserted between the elastic holding pieces 3 through the through holes 12 from the back side of the board 10. Plug-in connection. FIG. 3A shows a case where the mating tab 20 is inserted and connected between the elastic holding pieces 3 at an appropriate position.

[0005]

By the way, the opponent tab 2
Since the hole 12 for passing the “0” through is formed larger than the thickness of the mating tab 20 as described above, FIG.
As shown in (b), the mating tab 20 is made of a pair of elastic holding pieces 3.
When inserted at a position deviated from the center line L1, the elastic holding piece 3 may be pushed beyond the elastic limit and deformed.

According to the present invention, in consideration of the above circumstances, by guiding a mating tab to a proper insertion position, a board connecting terminal capable of preventing deformation of an elastic holding piece and improving connection reliability is provided. The purpose is to provide.

[0007]

The invention of claim 1 [SUMMARY OF] includes a box-shaped receiving cylindrical part for receiving the mating tab formed of sheet metal, integrally with the receiving cylindrical inside portion folded back portion of the receiving cylindrical portion provided, et al.
Is the pair of elastic holding pieces opponent tab is inserted, the connection substrate having a lead terminal attached to extend to <br/> substrate integrally from opposite side walls at the ends of the receiving cylindrical portion
In the terminal, the the lead terminal side of the receiving cylindrical part, provided position置規system piece you restricting <br/> the position of the mating tab to be inserted into the pair of elastic nipping pieces together, the position regulating piece Is
One pair with an interval corresponding to a pair of elastic holding pieces
, And gradually between the pair of elastic holding pieces.
It is characterized by being inclined so as to reduce the interval .

The board connection terminal is used by being attached to a board. The board has an insertion hole for the lead terminal and a hole for penetrating the mating tab. The connection terminal for the board is attached to the board by inserting each lead terminal into the insertion hole and soldering. The through hole is formed so large that the solder does not block the hole due to the capillary phenomenon during the flow soldering process. However, there is a possibility that it will deviate from the proper insertion position. It is. In particular, the insertion position of the mating tab is
Also, if you insert the mating tab,
With the action of the position regulating piece, the opponent tab is easily guided to the appropriate position.
Can be led.

[0009]

[0010]

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a cross-sectional view showing a state in which a mating tab 20 is inserted and connected to the board connecting terminal 31 of the embodiment mounted on the board 10, and FIG. 1A shows a state in which the mating tab is inserted at an appropriate position. FIG. 3B is a diagram showing a state where the cable is inserted at an improper position but is corrected and inserted at an appropriate position.

As in the conventional example shown in FIG. 3, the board connection terminal 31 includes a receiving cylinder portion 2 formed of sheet metal and a pair of elastic holding pieces 3 integrally provided in the receiving cylinder portion 2. 3 and a lead terminal 6 for a substrate integrally extended from an opposite side wall 2 a at an end of the receiving tube portion 2 via an elastic bending portion 5. As a characteristic point, a mating tab 20 inserted between the elastic holding pieces 3 is provided on the lead terminal 6 side of the receiving cylinder portion 2.
A position regulating piece 8 for regulating the position is formed integrally. The position restricting pieces 8 are arranged in a pair facing each other with an interval corresponding to the elastic holding pieces 3, and have a “C” shape so as to gradually narrow the interval between the pair of elastic holding pieces 3. It is inclined.

The board connection terminals 31 are connected to the lead terminals 6.
Is inserted into the insertion hole 11 and soldered to the substrate 10, and the center line L1 of the elastic holding pieces 3, 3 is located at the center of the hole 12 passing through the mating tab 20. Further, the pair of position restricting pieces 8, 8 are symmetrically arranged with respect to the center line L <b> 1 at positions separated from the substrate 10. And the minimum width D1 between those tips is
The width D of the through hole 12 of the substrate 10 is set to be narrower, the maximum width D2 between the base ends is set to be substantially equal to the width D of the through hole 12, and the mating tab inserted into the through hole 12 at the base end side. 20 can be picked up with certainty.

The terminal 31 is formed by bending a sheet metal 32 cut into a shape as shown in FIG. In this figure, the same reference numerals as those of the elements formed by bending (see FIG. 1) are assigned to the respective parts.

As shown in FIG. 2, when the terminal 31 is formed, a thin sheet metal 32 having two parallel protruding tongues formed at a distal end portion and a proximal end portion is bent into a rectangular shape to form the receiving cylinder portion 2. In the cylinder portion 2, opposed side walls 2 of the cylinder portion 2 are provided.
The two parallel protruding tongue pieces on the distal end side extending from a are folded in a semicircular or square shape to form a pair of elastic holding pieces 3, 3, and extend from opposite side walls 2 a of the receiving cylinder portion 2. By bending the two parallel tongues on the end side outwardly in a substantially S-shape, a lead terminal 6 for a substrate having an elastic bending portion 5 is formed, and a side wall 2a of the receiving cylinder portion 2 on the lead terminal 6 side. The position restricting piece 8 is formed by bending an L-shaped small piece protruding from the upper part in two steps.

Next, the operation will be described with reference to FIG.

When inserting the mating tab 20 from the back side of the substrate 10 into the through hole 12 and inserting it between the elastic holding pieces 3,
When the mating tab 20 is inserted at an appropriate position along the center line L1 of the elastic holding pieces 3, 3, as shown in FIG. 1A, the mating tab 20 is placed between the pair of elastic holding pieces 3, 3. Insert in the proper state.

On the other hand, as shown in FIG.
If the mating tab 20 is inserted from a position shifted from
Since the mating tab 20 to be inserted hits the position regulating pieces 8, 8, according to the inclination of the position regulating pieces 8, 8, the mating tab 20 is flexibly bent and guided to a proper position in accordance with the insertion, and is almost at a proper position. It is inserted between the elastic holding pieces 3,3. Therefore, an excessive force exceeding the elastic limit is not applied to the elastic holding pieces 3 and 3, the deformation can be prevented, and the connection reliability is improved.

[0020]

As described above, according to the first aspect of the present invention, the position of the mating tab can be guided to an appropriate position by the action of the position regulating piece. , The deformation of the elastic holding piece can be prevented, and the connection reliability can be improved. In particular, the operation of a pair of position regulating pieces
Guide the opponent's tab to the appropriate position
, So that the workability of joining with the mating tab can be improved.
This has the effect.

[0021]

[Brief description of the drawings]

FIGS. 1A and 1B are diagrams illustrating the configuration and operation of a board connection terminal according to an embodiment of the present invention. FIG. 1A is a cross-sectional view illustrating a state where a mating tab is inserted at an appropriate position, and FIG. FIG. 5 is a cross-sectional view showing a state in which the device is inserted into the device after being corrected to an appropriate position.

FIG. 2 is a development view of the board connection terminal according to the embodiment of the present invention.

3A and 3B are diagrams illustrating a configuration and an operation of a conventional board connection terminal, in which FIG. 3A is a cross-sectional view illustrating a state where a mating tab is inserted at an appropriate position, and FIG. FIG. 4 is a cross-sectional view showing a state in which the cover is folded.

[Explanation of symbols]

 2 Receiving cylinder part 2a Side wall 3 Elastic holding piece 6 Lead terminal 8 Position regulating piece 20 Opposite tab 31 Connection terminal for substrate

Claims (1)

(57) [Claims] And 1. A is formed by sheet metal box-shaped receiving cylindrical part for receiving the mating tab, a pair of the mating tabs provided integrally folded part in the receiving cylindrical portion of the receiver cylindrical portion is inserted an elastic clamping pieces, the board connecting terminal having a lead terminal attached to the substrate are integrally extending from opposite side walls at the ends of the receiving cylindrical part, to the lead terminal side of the receiving cylindrical portion, said pair 's are inserted into the elastic clamping pieces provided integrally with position置規system piece you regulate the position of the mating tab, the position regulating piece, the pair of elastic nipping
A pair is arranged facing each other at an interval corresponding to the pieces, and
Gradually narrow the gap between the pair of elastic holding pieces.
Connection terminal for a board, characterized by being inclined as described above .