JP2567463Y2 - Electrical connector for PCB - 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 electrical connector for interconnecting a circuit on a board and an external circuit, which is inserted into a through hole of the board and soldered to the board.

[0002]

2. Description of the Related Art A board electrical connector fixed to a board by inserting a contact into a through hole of the board and soldering a portion protruding from the through hole of the contact has been conventionally used. Until soldered, the electrical connector for a board is in a state where its contact is merely inserted into a through-hole, so that the board is easily detached from the board.

[0003] In order to prevent this, a technique shown in FIG. 3 has been proposed (see Japanese Utility Model Publication No. 1-12992). The board electrical connector 11 shown in FIG. 3 includes a contact 14a and a contact 14b that extend through the middle of the through hole 16 of the board 15. The contact 14a and the contact 14b are formed with bent portions (kinks) which are opposite to each other. The contact 14a and the contact 14b form a pair, and come into contact with the left and right inner walls of the through hole 16 in FIG. The connector 11 is held on the board 15 to prevent the board electrical connector from coming off until it is soldered.

A technique shown in FIG. 4 has also been proposed (see US Pat. No. 4,847,588). In the board electrical connector 21 shown in FIG. 4, a bent portion is formed at a part of the contacts 24 extending through the through hole 26 of the board 25 like the contacts 24 a and 24 b. The contact 24a, the contact 24b, and the bent portion contact the inner wall of the through hole 26,
The board electrical connector 21 is held by the board 25.

[0005]

Here, in the prior art shown in FIG. 3, in order to hold the board electrical connector 11 on the board 15, it is necessary to form opposite kinks on the mating contacts. There is a problem that it is not suitable for a connector having a small number of poles. For example, if a kink is formed in each contact of a two-pole board electrical connector in the opposite direction, a problem arises that a rotational moment is generated and the board is not securely held on the board.

In the prior art shown in FIG. 4, the bent portion provided on a part of the contact 24 of the board electrical connector 21 only contacts the inner wall of the through hole 26 so that the board electrical connector 21 is connected to the board 25. Since the connector 24 is held, the holding force for holding the board electrical connector 21 until soldering tends to be weak, and the contact 24 needs rigidity to secure a predetermined holding force. There is a problem that it is not suitable for a board electrical connector having contacts.

SUMMARY OF THE INVENTION In view of the above circumstances, an object of the present invention is to provide a board electrical connector which has a high holding force and is suitable for a board electrical connector having a small number of poles.

[0008]

Board electrical connector of the present invention for achieving the above object, according to an aspect of penetrates the through-hole from one surface of the substrate is soldered to the other surface of the substrate, low
In the electrical connector for a substrate having a plurality of contacts arranged in a row even without, at least one of said plurality of contacts, a first bent portion which is in contact with the inner wall of the through hole of the substrate, and said first bent portion Is bent in the opposite direction and front
A second bent portion which is engaged with an edge of the other side of the through hole , wherein the at least one contact is provided in the through hole.
When inserted into the hole, the first and second bent portions
Opposite forces act on the through hole
And the board mounting surface and the front of the board electrical connector.
The substrate is sandwiched by the second bent portion .

[0009]

In the electrical connector for a board according to the present invention, the first bent portion and the second bent portion determine the position in the through hole by the contacts themselves without forming a plurality of contacts. Further, since the second bent portion is locked to the edge of the through hole, the board electrical connector is securely held on the board without giving the contact particularly great rigidity.

[0010]

FIG. 1 is a view showing a contact according to an embodiment of a board electrical connector of the present invention, and FIG. 2 is a perspective view of the board electrical connector provided with the contacts shown in FIG. As shown in FIG. 1, before the contact 4 of the board electrical connector 1 is inserted into the through hole 6 of the board 5, the first contact 4 a starts at the top of the first bent portion 4 a of the contact 4.
The top of the second bent portion 4b bent in the opposite direction to the bent portion 4a
The width 4d to the point is formed larger than the diameter 6d of the through hole 6. Therefore, when the contact 4 of the board electrical connector 1 is inserted into the through hole 6 from one side of the board 5, the contact 4 undergoes elastic deformation, and the first bent portion 4 a comes into contact with the inner wall of the through hole 6, and The second bent portion 4b is locked to the edge of the through hole 6 on the other surface of the substrate 5. Therefore , the first bent portion 4a is formed in the through hole 6.
Diagonal by the horizontal direction between the force F _1, the second bent portion 4b by
A horizontal component of fit above the force F ₂ in opposite direction to the force F ₁
When the force F _2x acts, the contact 4 and the through hole 6 are formed.
The board is placed on the board electrical connector 1 while being frictionally engaged.
The force F ₃ from the surface 1a, a vertical component of the force F ₂ force F
_The substrate 5 is clamped by a force F _2y opposite to the direction ₃ . Obedience
Therefore, before the soldering, even if a force for lifting the board electrical connector 1 upward in FIG. 1 acts on the board electrical connector 1, the frictional engagement of the contact 4 and the through hole 6 occurs.
And the substrate 5 by the substrate mounting surface 1a and the second bent portion 4b.
, The board electrical connector 1 is securely held on the board 5. Therefore, in the case of a board electrical connector having a small number of contacts, if the first bent portion and the second bent portion are formed in at least one contact, it is sufficiently held on the board. Note that arrangement of the contacts 4 to board electrical connector 1, the two contacts 4 shown in Figure 2
Although the first bent portion 4a and the second bent portion 4b are formed in a direction orthogonal to the column direction and in the same direction as each other ,
The contact 4 may be formed in the opposite direction. Each first
The direction of the bent portion 4a and each of the second bent portions 4b should be in the same direction.
When aligned, the shape of the jig forming the bent parts 4a, 4b
Is simplified, so that the jig can be easily manufactured. Also,
If necessary, connect all contacts 4 with first bent portions 4a.
And the second bent portion 4b may be formed.

[0011]

According to the electrical connector for a board of the present invention,
At least one contact is in the through hole of the board
A first bend in contact with the wall and the first bend opposite to the first bend
To bend into
2 bends, and this contact is
When inserted, the first and second bent portions allow the through hoe to be inserted.
Of the connector and the connector base.
So that the substrate is sandwiched between the plate mounting surface and the second bent portion.
The configuration has the following advantages. That is, the first and second
Engagement with the through hole of the bent part of the connector and the connector
Between the substrate mounting surface and the second bent portion.
As a result, the first and second flexures are strengthened.
Even if there is only one contact with a curved part,
A stable predetermined holding force is obtained.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a contact according to an embodiment of the present invention.

FIG. 2 is a perspective view of a board electrical connector provided with the contacts shown in FIG. 1;

FIG. 3A is a cross-sectional view showing a conventional board electrical connector inserted into a board, and FIG. 3B is a perspective view of the board electrical connector.

4A is a cross-sectional view showing a state in which another conventional electrical connector for a board is inserted into a board, and FIG. 4B is a perspective view of the electrical connector for a board.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 Board electrical connector 1a Board mounting surface 4 Contact 4a First bent portion 4b Second bent portion 5 Board 6 Through hole

Claims (1)

(57) [Scope of request for utility model registration] 1. A through hole penetrating from one surface of a substrate
Soldered to the other surface of the substrate,At least one rowArray
Board electrical connector with multiple contacts
And  SaidpluralAt least one of the contacts is
A first bent portion in contact with an inner wall of the through hole;No.
Bent in the opposite direction to the bent portion of 1Before through hole
A second bent portion to be locked to the edge on the other side., The at least one contact is in the through hole
When inserted, the first and second bent portions allow the slide to be inserted.
When opposing forces act on the through hole,
The board mounting surface of the board electrical connector and the second
The substrate is sandwiched by the bent portions of A base characterized by
Electrical connector for board.