JPS61290675A - Construction of contact and housing - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Summary] This is a structure of a contact that is mounted on a printed board and a housing is attached and fixed, and the contact has a circular boss (
The stopper) is semicircular to improve contact functionality and ensure secure attachment.

[Industrial application field]

The present invention relates to the structure of a contact mounted on a printed board and attached to a housing, and more particularly to the structure of a contact and housing with improved circular bosses for fixing the housing.

A large number of contacts are arrayed and mounted on a printed circuit board used in electronic exchanges, etc., and fixed with adhesive using solder dips, etc., and a housing of a predetermined shape is attached and fixed to the contacts.The structure of the contact is to attach a circular boss (stopper) to the contact, It is extruded to be slightly larger than the contact insertion groove width of the housing, so when installing the housing,
The movable part of the contact on the side that is not pushing out the circular boss is
The movable part of the contact does not come into contact with the wall of the housing, and the contact and housing structure has a uniform mounting force. Improvements are requested.

[Conventional technology]

FIG. 3 is a diagram illustrating the structure of a conventional contact, in which (a) is a front view and (b) is a side view.

In the figure, a contact 1 made of a metal with good conductivity and elasticity is formed by press working, and a circular boss 2 is extruded onto a fixed part 13.
The solder joint 12 is inserted into a contact insertion hole formed in a printed board (not shown), and the housing 3 made of a synthetic resin molded product is attached from the direction of arrow A after being adhesively fixed with a solder dip or the like. It is.

In this case, the width including the protrusion of the circular boss 2 of the contact 1 must be made slightly larger than the groove width d of the housing 3.

[Problem that the invention seeks to solve]

In the structure of the conventional contact described above, when the housing is attached to the contact adhesively fixed to a printed board (not shown) from the direction of arrow B, the contact is pushed in the direction of arrow B when the circular boss starts to be inserted into the groove of the housing. Since the contact is in contact with the wall of the housing (the width of the circular boss part of the contact is slightly larger than the groove width d of the housing, the contact is pressed against the wall), it is difficult to insert the contact piece. Furthermore, there were other problems such as the housing and contacts not being fixed uniformly due to machining errors in the circular bosses.

[Means for solving problems]

The present invention solves the above problems and provides a contact and housing structure that is easy to install and can be fixed uniformly.

That is, the shape of the circular boss that fixes the contact to the housing is formed into a semicircular boss, and the chord of this semicircular boss is parallel to the movable part of the contact and is provided on the side of the fixed part, or is perpendicular to the movable part of the contact, and This problem is solved by forming the chord of the semicircular boss so that it is located on the opposite side of the movable part, and by making the groove width of the housing wider only at the part where the movable part of the contact is inserted.

[Effect]

The structure of the contact and housing described above is such that the chord of the semicircular boss is formed parallel to the movable part of the contact, and the groove width of the housing is widened only in the part where the movable part of the contact is inserted to facilitate insertion of the housing. Since the chord of the semicircular boss is formed perpendicular to the movable part of the contact and located on the opposite side of the movable part of the semicircular boss, the contact can be mounted reliably.

(Example) Fig. 1 is a diagram illustrating an example of the structure of the contact and housing of the present invention, and Fig. 1 (a) is a front view;
b) is a side view, and (C) is a plan view of the housing, in which parts equivalent to those in FIG. 3 are given the same reference numerals.

In the figure, a plurality of contacts 1 made of a metal with good conductivity and elasticity are formed in a continuous form by press working, a circular boss is extruded into the fixed part 13, and this circular boss is cut at a cutting position 5 (the center of the circular boss). part) to form a semicircular boss 4, and the chord 41 of this semicircular boss 4 connects to the fixed part 13.
The contact 1 is formed so as to match both sides of the contact 1, and the solder bonded part 12 is inserted into a contact insertion hole formed in a printed board (not shown), and the solder bonded part 12 is bonded and fixed by solder dipping, etc., and then a synthetic resin molded product etc. The structure is such that the housing 6, which is made wide only at the part where the movable part 11 of the contact 1 is inserted, is mounted from the direction of arrow A.

In this case, from the groove width d of the part of the housing 6 where the movable part 11 of the contact 1 is not inserted, the semicircular boss 4 of the contact 1
The width including the protrusion must be made slightly larger.

FIG. 2 is a diagram illustrating another embodiment of the structure of the contact of the present invention, in which (a) is a front view, and o3) is a side view.
Parts that are equivalent to those in FIG. 3 are given the same reference numerals.

In the figure, a contact 1 made of a metal with good conductivity and elasticity is formed by press working, and a semicircular boss 4 is extruded onto a fixed part 13.
is formed on the fixed part 13 substantially corresponding to the movable part 11, so that the chord 41 of the semicircular boss 4 is perpendicular to the movable part 11, and
The contact 1 is inserted into a contact insertion hole formed in a printed board (not shown), and the solder adhesive part 12 is fixed by solder dipping or the like, and then a synthetic resin molded product or the like is formed. This is a structure in which the housing 3 is mounted from the direction of arrow A.

In this case, the width including the protrusion of the semicircular boss 4 of the contact 1 must be made slightly larger than the groove width d of the housing 3.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, the semicircular bosses are provided on both sides of the fixed part, and the groove width of the housing is increased, so that the contact piece can be easily inserted into the movable part of the contact. Since the semicircular boss is formed substantially below the movable part and its chord is perpendicular to the solder joint side, there is an advantage that the housing can be mounted uniformly.

[Brief explanation of drawings]

FIG. 1 is a diagram illustrating an embodiment of the structure of the contact and housing of the present invention, in which (a) is a front view, and (b) is a front view.
) is a side view, (C) is a plan view of the housing, and Figure 2 is a
FIG. 3 is a diagram illustrating another embodiment of the structure of the contact of the present invention, where (a) is a front view, (bl is a side view), and FIG. (a) is a front view, (b) is a side view. In the figures, 1 is a contact, 2 is a circular boss, 3°6 is a housing, 4 is a semicircular boss, 5 is a cutting position, 11 is a movable part, 12 is the solder bonding part, 13 is the fixing part, 41 is the cut-off part fH2 diagram

Claims (4)

[Claims] (1) A contact structure characterized in that the shape of the circular boss (2) for fixing the contact (1) to the housing (3) is formed into a semicircular boss (4). (2) The chord of the semicircular boss (4) is parallel to the movable part (11) of the contact (1) and is formed on the side of the fixed part (13). ) The structure of the contact described in section 2. (3) The chord of the semicircular boss (4) is formed perpendicular to the movable part (11) of the contact (1) and located on the opposite side of the movable part. (
Structure of the contact described in section 1). (4) A housing structure characterized in that the groove width of the housing (6) to be attached to the contact (1) is made wider at the insertion part of the movable part (11) of the contact (1).