JPH03686Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention applies a pressing force from above the housing with the contact locked to the housing, pushes the contact into the through hole of the board, and establishes conduction between the contact and the board. The present invention relates to a connector in which a pin terminal is sandwiched between a contact and the other end of a housing, and the pin terminal can be attached or detached after the condition is set.

[Conventional technology]

A conventional connector is composed of a contact 1 and a housing 2 shown in FIGS. 4 to 6.

That is, the contact 1 has an elastic piece 3 at its tip, a comp pin portion 4 press-fitted into a through hole A' of a substrate A at its other end, and a tongue piece 5 projecting in the plane direction at its intermediate portion. The housing 2 is hollow and has a recess 6 in the middle, into which the tongue 5 is engaged.

To assemble a connector with such a structure into board A, first place board A on pedestal B so that through hole A' corresponds to hole B' in pedestal B, and then insert tongue piece 5 of contact 1. After inserting the comp pin part 4 into the through hole A' while it is locked in the concave part 6 of the housing 2, when the upper end of the housing 2 is pressed from above using the pushing jig C, the tongue piece 5 and the concave part 6 are pressed. act as a locking part and a locked part, respectively, and the pressing force is transmitted to the contact 1, the comp pin part 4 is press-fitted into the through hole A', and one end of the housing 2 comes into contact with the board A, and the contact 1 is closed. Press-fitting stops.
As a result, without soldering the connector,
It can be integrated with the substrate A.

[Problem that the invention attempts to solve]

However, since a pressing force P is applied to the tongue 5 that protrudes from the surface of the intermediate portion of the contact 1 by l ₁ , a so-called moment Pl ₁ (Fig. 7) is generated, and the contact is pushed toward the side where the tongue 5 is located. There was a tendency for people to lean toward the opposite direction, and a sitting bend phenomenon occurred.

Further, since the housing 2 is molded from an insulating material, the permissible load per unit area is considerably smaller than that of metal, so a large area of the recess 6 in contact with the tongue piece 5 is required. Therefore, in the contact 1 having a limited width, the protruding length of the tongue piece 5 is increased to increase the area. As a result, the tilting and buckling phenomenon of the contact 1 described above is promoted.

Therefore, for the purpose of solving such problems, the fourth
As shown in the figure, an auxiliary housing 7 that allows the contact 1 to pass through is used, and this auxiliary housing 7
was interposed between the tongue piece 5 and the substrate A to prevent the above-mentioned tilting and buckling phenomenon.

However, this structure has another problem in that the number of parts increases and it requires a lot of effort to assemble.

[Means for solving problems]

According to the present invention, a protruding tongue-shaped locking part is provided in the middle of a contact having an elastic piece at the tip, and a locked part is provided inside a housing that receives the elastic piece, and the locked part is provided inside a housing that receives the elastic piece. In the connector in which the contact is press-fitted into the through hole of the board by engaging the contact with the locking part and applying a pressing force from above the housing, the lock is applied to both sides of the vertical central axis of the contact. A connector characterized in that a pair of second locking portions having horizontal surfaces different from the second locking portions are provided, and a second locked portion that comes into contact with the horizontal surface of the second locking portion is also formed in the housing. A contact locking structure is obtained.

〔Example〕

Hereinafter, parts of the present invention that are different from conventional ones will be explained based on FIGS. 1 to 3 of the embodiment.
L is the central axis of the connector 1 in the vertical direction, passing through the center in the width direction and thickness direction. Reference numeral 10 denotes a horizontal surface serving as a second locking portion, which extends in a direction perpendicular to the central axis L and is formed on both sides of the central axis L. 11 is a dowel corresponding to the conventional tongue piece 5. Reference numeral 12 denotes an abutment surface formed on the housing 2 and serving as a second locked portion, and is provided at a position facing the horizontal surface 10 in the vertical direction.

Because of this structure, when a pressing force P is applied to the housing 2, the pressing force P is received at three places, the two horizontal surfaces 10 and the dowel 11, so the total surface area of the three places is Assuming that is the same as the surface area of the conventional tongue piece 5, the protrusion amount of the dowel 11 l ₂
can be made smaller than the amount of protrusion _l1 of the tongue piece 5, and the moment acting on the contact 1 is reduced. Moreover, since the horizontal plane 10 is on the left and right sides of the central axis L, no moment is generated in the contact 1.

In addition, 13 is a pin terminal and elastic piece 3 of contact 1
and the housing 2, and is detachable.

[Effect of idea]

In the present invention, as described above, the new locking portions formed on both sides of the center axis L of the contact receive the pressing force applied to the housing, so that the amount of protrusion of the conventional locking portions can be reduced. Therefore, the moment acting on the contact can be reduced, and tilting and buckling of the contact can be prevented. Also, since there is no need to sandwich the tongue piece between the housings,
The housing can be constructed as a single unit, making it possible to improve assembly efficiency and reduce manufacturing costs.

[Brief explanation of drawings]

FIGS. 1 to 3 show an embodiment of the present invention, and FIGS. 4 to 7 show other embodiments. Figures 1 and 2 are cross-sectional views, Figure 3 is a perspective view of the contact, Figures 4 and 5 are cross-sectional views, Figure 6 is a perspective view of the contact, and Figure 7 is an explanatory diagram of the force acting on the contact. . In the figure, A is the board, A' is the through hole, B is the pedestal,
C is a push jig, 1 is a contact, 2 is a housing, 3 is an elastic piece, 4 is a comp pin, 5 is a tongue piece (locking part), 6 is a recess (locked part), 10 is a horizontal surface (second locking part) 11 is a dowel (locking portion), and 12 is a contact surface (second locked portion).

Claims (1)

[Scope of utility model registration request] A protruding tongue-like locking part is provided in the middle of the contact having an elastic piece at the tip, and a locked part is provided inside the housing that receives the elastic piece,
In a connector in which the locked portion is engaged with the locking portion and a pressing force is applied from above the housing, thereby press-fitting the contact into the through hole of the board, both sides of the vertical central axis of the contact are provided. is provided with a pair of second locking parts having a horizontal surface different from the locking part, and the housing is also provided with a second locked part that comes into contact with the horizontal surface of the second locking part. The contact locking structure of the connector.