JPH08321336A - Terminal - Google Patents

Abstract

PURPOSE: To provide a terminal which can be downsized and also can prevent the peeling of the foil from the land of a substrate, concerning terminals which are used in plural numbers, being attached to the substrate. CONSTITUTION: This terminal is provided with two places of projections 22 and 23 bent and erected in opposite direction to each each other at the sides, and the bottoms 28 and 29 contact with a printed board 5, and also the bends 30 are provided to be capable of being bent within the terminal width. Hereby, the downsizing and reliability improvement can be materialized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal used for mounting a plurality of terminals on a board such as a printed board.

[0002]

6 to 10 show the structure of a conventional terminal, FIG. 6 is a perspective view of the conventional terminal, and FIG. 7 is a plan view of the same terminal when three poles are arranged on a substrate. 8 is a side cross-sectional view of FIG. 7, FIG. 9 is a perspective view of a terminal having another conventional structure, and FIG. 10 is a plan view of the same terminal arranged in three poles on a substrate.

In FIGS. 6 to 10, reference numeral 1 denotes a connector portion, which is a portion to be connected to a female connector as a male connector. Reference numeral 2 is a flat surface portion provided by the bent portions 3 and 4, and the lower surface side is in contact with the printed circuit board 5.
A V-shaped portion 6 is formed so as to be inserted into the square hole 7 of the printed board 5 and caulked. Therefore, by inserting the V-shaped portion 6 into the square hole 7 of the printed circuit board 5 and restricting the position of the flat surface portion 2 with respect to the printed circuit board 5, it is possible to prevent the back and forth tilt and crimp.

Further, as shown in FIG. 7, the 090 type (terminal width 2.3 mm) generally called in the connector industry is used.
If the three-pole connector is formed, it can be arranged in parallel at a pitch of 4 mm. After caulking the printed circuit board 5, as shown in FIG.
It was assembled by being connected by the solder 9 so as to be electrically connected to.

[0005]

However, in the above-mentioned conventional terminal, since the flat portion 2 is required to be wide so as not to fall when crimped onto the printed circuit board 5, miniaturization is required for electronic equipment and the like. In this case, the flat surface portion 2 hinders the mounting of electronic components and hinders the downsizing of the printed circuit board 5, and more materials for the terminals must be taken in order to secure the flat surface portion 2. There was a problem of becoming high.

On the other hand, as shown in FIG. 9, a structure in which convex portions 10 and 11 which are inclined in opposite directions are provided on both side surfaces of the terminal is also conceivable. In the case of a narrow terminal arrangement in which several terminals are arranged and the terminal pitch is 4 mm or less, the bending position 12 is the same as the end face of the terminal, and the convex portion 10 including the plate thickness of the terminal,
No. 11 had to be provided, and the insulation distance 13 between the terminals could not be secured sufficiently, so it could not be used.

If a force is applied laterally to the tip of the terminal when the female connector is fitted, stress concentrates on the land 8 of the printed circuit board 5 which is the terminal fixing portion, and the foil of the land 8 peels off. There was a problem that it easily occurred.

The present invention solves such conventional problems,
The purpose is to provide a highly reliable terminal at low cost.

[0009]

In order to solve the above-mentioned problems, a terminal of the present invention has a main body made of an elongated plate material having a rectangular cross section, and a V-shape formed by cutting out a central portion of one end of the main body. It consists of a caulking part and a pair of convex parts connected to the caulking part so as to project symmetrically outward from the main body part. The main body part of the root part of the convex part is cut out by 0.5 mm or more. Grooves are provided respectively, and the convex portions are provided in the opposite directions from 30 ° to 90 ° by using the bottom portions of the grooves as bent portions.
The structure is bent at an angle of °.

[0010]

Therefore, according to the present invention, when the terminal is inserted into the square hole of the printed circuit board, the position of the terminal is regulated by the bottom surface of the two convex portions bent and bent in opposite directions, and the bending position is changed. Since it is provided inside the terminal width, it can be crimped vertically even with a narrow terminal pitch without falling back and forth.

Further, even if a lateral force is applied to the tip of the terminal, the stress is concentrated on the pair of grooves having the smallest terminal width, and the stress is concentrated on the land of the printed circuit board so that the foil strip or the like is formed. Since the terminal is deformed in the groove before being damaged, it is possible to prevent the printed board from being damaged.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a perspective view of a terminal according to the embodiment, and FIG.
Is a plan view of the same terminal when three poles are arranged on the substrate, and FIG.
4 is a side sectional view of the same, FIG. 4 is a plan view of a case where the terminals are arranged in multiple poles side by side on a substrate, and FIG. 5 is a perspective view of a case where a connector portion of the terminals is formed in a lateral direction.

In the present embodiment, the same components as those shown in the above-mentioned conventional example are designated by the same reference numerals, and detailed description thereof will be omitted.

1 to 5, 21 is, for example, 0.6.
This is a terminal formed by punching out a brass plate having a plate thickness of 4 mm. The terminal 21 has a connector portion 1 formed at its tip, and α = in the opposite directions with respect to the plane of the connector portion 1.
Two convex portions 22 and 23 having an inclination of 45 ° are integrally formed.

Further, at the roots of the convex portions 22 and 23, if the 090 terminal size (terminal width 2.3 mm) generally called in the connector industry is used, the grooves 24 and 25 having a depth of about 0.5 mm or more. , 26, 27 are respectively provided, the bent portion 30 of each raised portion 22, 23 is bent and raised so as to be located inside the width of the terminal 21. At this time, the groove 24, the groove 25, and the groove 26
The terminal width is minimized by the pair of the groove 27 and the groove 27, and the bottom surfaces 28 and 29 of the end surface convex portions 22 and 23 are configured to be the receiving surfaces for the printed circuit board 5.

Therefore, this terminal 21 is connected to, for example, a 3-pole 09 terminal.
When forming as a 0 terminal size male connector,
As shown in FIG. 2, the V-shaped portions 6 of the terminals 21 are inserted into the square holes 7 provided at a pitch of about 4 mm on the printed circuit board 5,
Positions are restricted by the bottom surfaces 28 and 29 of the convex portions to prevent them from falling back and forth, and the V-shaped portions 6 are unfolded and fixed by caulking.

Then, as shown in FIG.
Is assembled by being connected with the solder 9 so as to be electrically connected to the land 8 formed in the above. The insulating distance 31 between the terminals at this time is the convex portion 2 of the three terminals 21 arranged in parallel.
2 and 23 are cut and raised in the same direction at α = 45 °,
Further, since the bent and bent portion 30 of the cut-and-raised part is formed inside the terminal width, it is possible to secure a wide width of about 1 mm or more.

Further, since the position where the terminal width is minimized is provided in the corner portion 32 of the printed circuit board 5 by the grooves 24 and 25, even if a force is applied to the tip end portion of the terminal 21 in the lateral direction, the terminal width. Corner portion 32 comes into contact with the position where
Since the stress of the entire terminal is configured to be concentrated on this portion, the stress is concentrated on the land 8 of the printed circuit board 5 due to the bending of the terminal at this position, and the foil peeling of the land 8 is prevented from occurring. be able to. The bent terminal 21 returns to its original position when a force is applied in the opposite direction, so there is no particular problem in using the terminal 21.

Further, in the above embodiment, the case where the terminals 21 having three poles are arranged in one row has been shown. However, when the number of poles increases and the number of poles becomes two rows as shown in FIG. 4, etc. The present invention can be used even when the space between the rows is narrow, and can also be used when the connector portion 1 is oriented in the lateral direction as shown in FIG.

[0021]

As is apparent from the above-described embodiment, the present invention is such that when arranging a multi-pole terminal, there is no tilting back and forth, and it is possible to crimp vertically even at a narrow pitch. The terminals can be downsized, the cost can be reduced, and the number of receiving portions for the printed circuit board can be reduced, so that the printed circuit board can be downsized.

Further, even if a force is applied to the tip of the terminal, the foil of the printed board does not peel off, so that there is an effect that a highly reliable terminal can be provided in actual use.

[Brief description of drawings]

FIG. 1 is a perspective view of a terminal according to an embodiment of the present invention.

FIG. 2 is a plan view showing the same terminals arranged in three poles on a substrate.

FIG. 3 is a side sectional view of FIG.

FIG. 4 is a plan view when the terminals are arranged in parallel on a substrate in multiple poles.

FIG. 5 is a perspective view when the connector portion of the terminal is formed in the lateral direction.

FIG. 6 is a perspective view of a conventional terminal.

FIG. 7 is a plan view of the same terminal with three poles arranged on a substrate.

8 is a side sectional view of FIG.

FIG. 9 is a perspective view of a terminal having another conventional configuration.

FIG. 10 is a plan view showing the same terminals arranged in three poles on a substrate.

[Explanation of symbols]

 1 Connector part 5 Printed circuit board 6 V-shaped part 7 Square hole 8 Land 9 Solder 21 Terminal 22,23 Convex part 24,25,26,27 Groove 28,29 Convex part bottom surface 30 Bending part 31 Insulation distance 32 Corner part

Claims (1)

[Claims] 1. A main body made of an elongated plate material having a rectangular cross section, a V-shaped crimp formed by cutting out a central portion of one end of the main body, and a caulked portion connected to the main body to the outside. A groove is formed by a pair of convex portions provided so as to project symmetrically, the main body portion of the root portion of the convex portion is cut out by 0.5 mm or more, and the bottom portion of the groove is used as a bent portion to form the convex portion. In opposite directions from 30 ° to 90
A terminal that is bent at an angle of °.