JP4176946B2 - Board connector and electrical junction box using the board connector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a board connector and an electrical junction box using the board connector.
[0002]
[Prior art]
In recent years, while electrical components mounted on automobiles have increased, an increase in the space in the vehicle has also been demanded. Therefore, miniaturization is also required for the electrical junction box mounted on the automobile.
Conventionally, a bus bar obtained by punching and bending a copper plate has been used as a circuit conductor in an electrical junction box. Recently, however, an electrical junction box that has been miniaturized using a printed circuit board instead of a bus bar has been developed.
[0003]
In order to increase the density of electrical components to be mounted, this electrical junction box accommodates a plurality of printed circuit boards arranged in parallel, and each printed circuit board is connected to an electric wire by a board connector. As shown in FIG. 4, the board connector includes a plug 4 in which a right-angled terminal 2 connected to the printed board 1 is fixed to an insulator 3, and a receptacle 5 connected to the plug 4. The plurality of electric wires 7 drawn out from the receptacle 5 are bundled to form a wire harness.
The plug 4 is multipolarized by a plurality of terminals 2 in order to improve the workability of assembly to the printed circuit board 1. The plurality of terminals 2 are arranged in a well-balanced manner so as to be centrally symmetrical in two rows in order to facilitate the insertion / extraction operation with respect to the receptacle 5. Such a balanced arrangement prevents an increase in the force required to insert and remove the plug 4 and the receptacle 5 even when the number of poles increases, and increases the force acting on the terminals 2, the printed circuit board 1, and the like. Can also be prevented. Also, attachment holes 6 for attaching the plug 4 to the printed board 1 with screws are provided in the vicinity of both ends and the center of the attachment surface 3a of the insulator 3 facing the printed board 1.
[0004]
In FIG. 4, the circuit conductors of the two printed circuit boards 1a and 1b are preliminarily designed so that the arrangement patterns of the connection positions with the terminals 2 are centrally symmetric and the same. The two printed circuit boards 1a and 1b to which the plug 4 is assembled are arranged so as to be parallel and plane-symmetric, and the two plugs 4a and 4b in which the terminals 2 are arranged in the center symmetry are one. Connected to the receptacle 5.
In this case, since the arrangement patterns of the connection positions of the two printed circuit boards 1a and 1b are centrally symmetric and the same, plugs 4a and 4b having the same shape are assembled on the two printed circuit boards 1a and 1b. In addition, the two printed circuit boards 1 can be arranged in parallel and in plane symmetry.
[0005]
[Problems to be solved by the invention]
When trying to reduce the size of the printed circuit board in order to reduce the size of the electrical connection box, the pattern of the circuit conductor formed on the printed circuit board is constrained, and the connection position of the circuit conductor with the plug terminal is balanced and centrally symmetric. It becomes difficult to arrange in. Therefore, the terminal arrangement of the plug cannot be symmetric with respect to the center.
[0006]
For example, as shown in FIG. 5, when the arrangement of the terminals 2 of the plugs 4a and 4b is asymmetric with respect to the center, the plugs 4a and 4b are respectively connected to the two printed boards 1a and 1b arranged in parallel. If it is going to be assembled so as to be plane-symmetric, the plug 4b cannot be the same shape as the plug 4a. That is, the plug 4b needs to reverse the right-angle bending direction of the terminal 2 of the plug 4a and provide the mounting surface 3b provided with the mounting hole 6 symmetrically on the opposite side of the mounting surface 3a of the plug 4a. .
[0007]
As described above, if the printed circuit boards 1a and 1b are to be miniaturized, two types of plugs 4a and 4b having different shapes are required. For this purpose, two molds for molding the insulator 3 are also required. There was a problem that the equipment cost of the mold was high.
[0008]
In view of the above-described problems, the present invention provides a board connector that can have versatility, reduce molds used for forming an insulator, and reduce costs, and electrical connection using the board connector The purpose is to provide a box.
[0009]
[Means for Solving the Problems]
The present invention has been made to solve the above-mentioned problems, and the invention according to claim 1 is a mounting in which a plurality of right-angled terminals are fixed to an insulator, and the insulator has a mounting hole for a printed circuit board. In the board connector comprising a plug provided with a surface and a receptacle connected to the plug, the insulator has two parallel planes that are plane-symmetric, and the plurality of terminals are the parallel of the insulator. The plugs are mounted on the two parallel surfaces of the insulator, and the plugs are mounted on the parallel surfaces of the two parallel surfaces. A connector for a board.
Here, the fact that the array pattern is reversely asymmetric means that the pattern does not completely overlap by rotating 180 degrees and changing the direction to the opposite direction.
[0010]
The invention according to claim 2 is an electrical connection box using the board connector according to claim 1, wherein the printed circuit board on which the plug of the board connector is assembled is arranged in a plane symmetrically and accommodated. It is characterized by that.
[0011]
According to the first aspect of the present invention, the plug is provided with the mounting surface to the printed circuit board on each of two parallel surfaces that are plane-symmetric with the insulator . For this reason, when the plugs having the terminals bent in the right angle bending direction are attached to the two printed circuit boards with different mounting surfaces, the two printed circuit boards are arranged in plane symmetry, and the two plugs are connected to one printed circuit board. Can be connected to a receptacle.
Therefore, even when the arrangement pattern of the terminal of the plug is inversion asymmetric, an insulator manufactured with a single-sided mold is used without using two types of insulators manufactured with a two-sided mold as in the prior art. With a plug, two printed circuit boards can be arranged in plane symmetry.
[0012]
When the board connector according to claim 1 is attached to the printed circuit board accommodated in the electrical connection box as in the invention according to claim 2, the terminal of the plug connected to the circuit conductor is reduced in size. Even if the arrangement pattern is reversed asymmetric, the printed circuit board can be arranged in plane symmetry by using the plug using the same insulator, so that the manufacturing cost of the electrical junction box is reduced.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view showing an embodiment of a plug of a board connector according to the present invention.
This embodiment is different from the conventional example in that the insulators 13 of the plugs 11a and 11b have plane-symmetric mounting surfaces 13a and 13b, and the insulators 13 of the two types of plugs 11a and 11b are arranged on one surface. It is possible to manufacture with an insulator molding die, and the die manufacturing cost is reduced.
[0014]
In FIG. 1, a plug 11a is a rectangular parallelepiped insulator 13 in which rectangular terminals 12a are embedded in 22 × 2 rows, 44, and fixed. The arrangement of the 22 terminals 12a is divided into four groups of 4, 5, 5, 4, 4 and is asymmetric with respect to the center. Further, the insulator 13 is provided with planes of attachment 13 a and 13 b to the printed circuit board. The attachment surfaces 13a and 13b are provided with attachment holes 14 at three locations near both ends and near the center. The terminal 12a is bent at a right angle in the direction of the mounting surface 13a.
The plug 11b has the same shape as the plug 11a except that the right-angle terminal 12b is bent at a right angle toward the mounting surface 13b of the insulator 13.
[0015]
As shown in FIG. 2, the plug 11a is attached to the printed circuit board 1a by screwing screws 15 into the mounting holes 14 on the mounting surface 13a side through the printed circuit board 1a. Similarly, the plug 11b is attached to the printed board 1b by screwing a screw into the attachment hole 14 on the attachment surface 13b side.
As shown in FIG. 1, the printed circuit boards 1a and 1b to which the plugs 11a and 11b are attached as described above are arranged in parallel and plane-symmetrically with the plugs 11a and 11b inside, and the terminals 12a of the plugs 11a and 11b. , 12b are also plane-symmetric. Therefore, the plugs 11a and 11b arranged in this way can be easily connected to one receptacle.
[0016]
FIG. 3 is an exploded perspective view of an electrical junction box that houses the board connector plug 11a. In FIG. 3, 21 is a cover and 22 is a case.
In this electrical junction box, the printed circuit board 1a to which the plug 11a is attached and the printed circuit board 1b (not shown) to which the plug 11b is attached are arranged in plane symmetry and are accommodated in a case 22. In this case, the printed circuit boards 1a and 1b are reduced in size, and the printed circuit boards 1a and 1b are manufactured with a single-side insulator molding die even if the arrangement of the connection portions with the circuit conductor plugs 11a and 11b is not centrally symmetric. Plugs 11a and 11b can be used, and the mold production cost can be reduced.
[0017]
【The invention's effect】
As described above, according to the first aspect of the present invention, even when the terminal arrangement of the plug is not centrally symmetric, two types of insulators manufactured with a two-sided mold as in the prior art are not used. With a plug using an insulator made of a single-sided mold, two printed circuit boards can be arranged symmetrically, and there is an excellent effect that the mold cost is reduced.
In addition, according to the invention described in claim 2, by using the board connector described in claim 1, there is an excellent effect that the manufacturing cost of the small electric junction box can be reduced.
[Brief description of the drawings]
FIG. 1 is a perspective view of an embodiment of a plug of a board connector according to the present invention.
FIG. 2 is a cross-sectional view of a portion where the plug is attached to a printed circuit board.
FIG. 3 is an exploded perspective view of an electrical connection box using a board connector having the plug.
FIG. 4 is a perspective view of a conventional board connector.
FIG. 5 is an explanatory view of a problem with a conventional board connector plug.
[Explanation of symbols]
1a, b Printed circuit board 5 Receptacle 11a, b Plug 12a, b Terminal 13 Insulator 13a, b Mounting surface 14 Mounting hole 15 Screw 21 Cover 22 Case

Claims (2)

In a board connector comprising a plurality of right-angled terminals fixed to an insulator, the insulator having a plug provided with a mounting surface having a mounting hole for a printed circuit board, and a receptacle connected to the plug.
The insulator has two parallel planes that are plane-symmetric,
The plurality of terminals are arranged in parallel to the two parallel surfaces of the insulator, and arranged so that an arrangement pattern thereof is reversed asymmetric,
The board connector is characterized in that a mounting surface of the plug is provided on each of the two parallel surfaces of the insulator . 2. The electrical connection box using the board connector according to claim 1, wherein the printed board on which the plug of the board connector is assembled is accommodated in a plane symmetry.

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