JPH0411991B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a connector for electrically connecting electrical/electronic circuits, and particularly to improvements in contacts inserted into the connector.

(Prior Art) Connectors have been commonly used as means for electrically connecting circuits or devices to each other for ease of removal.

As an example of this connector, for example,
-There is one described in Publication No. 10555. In this connector, the tines of the contacts are soldered to the printed circuit board, and the connecting pins attached to the other printed circuit board are inserted into the connector and come into contact with the contacts of this connector, so that the circuits on both printed circuit boards are connected. This is a printed circuit board connector that is configured to electrically connect a connector via a connecting pin and a contact, and the conventional technology will be explained below along with this conventional example.

FIG. 5A is a perspective view showing the inside of the conventional printed circuit board connector, FIG. 5B, and FIG.
FIG. C is a diagram showing the state of the conventional contact shown in FIG. 5A after being bent (the tine portion 13b is before being bent) and before being bent. FIG. 5C shows a state in which a plurality of contacts are arranged.

This printed circuit board connector 11 is composed of a housing 12 and contacts 13 inserted into the housing 12.

This contact 13 is usually, for example, the fifth C.
As shown in the figure, this 5C is made from one sheet of conductive material.
A large number of pieces are cut out side by side in the shape shown in the figure, and after being cut out, they are bent into the shape shown in Fig. 5B. Thereafter, the contacts 13 bent into this shape are inserted into the housing 12, and the tine portions 13b are bent to form the connector 11 shown in FIG. 5A.

When the connecting pin 15 attached to the printed circuit board 14 is inserted through the hole 12a of the housing 12, the contact 13
It is composed of a contact portion 13a that makes elastic contact with the housing 12, and a tine portion 13b that protrudes from the housing 12 to the outside. The tine portion 13b is inserted into a hole provided in a printed circuit board (not shown) and soldered. By connecting in this way, the circuit wired on the printed circuit board 14 and the tine portion 13b are connected.
A circuit wired to a printed circuit board to which is soldered is electrically connected via the connecting pin 15, the contact portion 13a, and the tine portion 13b.

When the contact 13 is inserted into the housing 12, the outer edge 1 of the contact portion 13a of the contact 13
When the entirety of 3c comes into contact with the inner wall of the housing 12,
The friction between the outer edge 13c and the inner wall of the housing 12 may reduce the elasticity that holds the inserted connecting pin 15, resulting in poor contact between the contact portion 13a and the connecting pin 15. Only a portion 13d of the housing 13c is formed so as to be in contact with the inner wall of the housing 12, thereby preventing the above-mentioned poor contact from occurring. For this reason, for example, as shown in FIG. 5C, when a large number of contacts 13 are cut out from a single sheet of conductive material in a row adjacent to each other laterally, gaps 16 are formed between adjacent contacts 13. .

(Problems to be Solved by the Invention) In the above conventional example, as described above, the contact 1
For example, when a large number of contacts 13 are cut out from a single sheet of conductive material in the arrangement shown in FIG. 5C, gaps 16 are formed between adjacent contacts 13, and the conductive material is wasted. . On the other hand, in order to eliminate this waste, if the outer edges 13c of the contact portions 13a of adjacent contacts 13 are formed in a straight line so that they contact each other, as described above, when the contacts 13 are inserted into the housing 12, A new problem arises in that the entire outer edge 13c of the contact portion 13a comes into contact with the inner wall of the housing 12, and elasticity is lost, resulting in poor contact between the connection pin 15 and the contact portion 13a.

In view of the above-mentioned problems, the present invention has been developed to clamp the inserted connecting pin so that when the contact is inserted into the housing, only a part of the outer edge of the contact portion of the contact comes into contact with the inner wall of the housing. In addition to maintaining elasticity to prevent contact failure between the connecting pin and the contact part, when a large number of contacts are cut out side by side from a single sheet of conductive material, the It is an object of the present invention to provide a contact for a connector in which waste of conductive material is suppressed by cutting out so that the entire outer edge of the contact part is in contact with each other.

(Means for Solving the Problems) The connector contact of the present invention is a contact inserted into a connector housing, and includes a base and a connecting pin that rises from both side edges of the base and is inserted from outside the housing. a pair of contact parts that are held in place by holding the housing, and a tine part that is continuously formed on the base and protrudes outside the housing; When a large number of contacts are cut out side by side from a single sheet of conductive material, the above-mentioned waveforms complement each other at the boundaries of the adjacent contacts, so that the contacts can be cut out without waste. That is.

(Function) Since the connector contact of the present invention has a waveform on a part of the outer edge of the contact portion, when the contact is inserted into the housing, only the waveform protrusion is connected to the inner wall of the housing. The part of the outer wall other than this protrusion does not contact the inner wall of the housing, the friction between the outer edge and the inner wall of the housing is minimized, and the contact part clamps the connecting pin with sufficient elasticity. Therefore, poor contact between the contact portion and the connecting pin will not occur. Also, the above waveform is
When a large number of contacts are cut side by side side by side from a single sheet of conductive material, the entire outer edge of the contact area of the adjacent contacts is formed in shapes that complement each other at the boundary lines of the adjacent contacts. can be cut out in contact with the conductive material, reducing waste of conductive material.

(Example) Hereinafter, an example of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a sectional view of an embodiment of the pre-printed board connector of the present invention.

This printed circuit board connector 1 is comprised of a housing 2 and contacts 3 and 3' inserted into the housing 2. This contact 3,
3' are usually arranged in large numbers in a direction perpendicular to the paper plane of this drawing.

These contacts 3, 3' have base parts 3a, 3a',
Connecting pins 4, 4' are provided in holes 2 in the housing 2, rising from both side edges of the base parts 3a, 3a'.
When inserted from a, these connecting pins 4, 4'
A pair of contact portions 3b, 3b' that elastically clamp and contact the connecting pins 4, 4', a pair of contact portions 3b, 3b' provided on the back side of the contact portions 3b, 3b' in the insertion direction of the connecting pins 4, 4',
Wall portions 3c, 3 that prevent connection pins 4, 4' from being inserted
c' and hole 5a provided in printed circuit board 5
It consists of tine parts 3d, 3d' formed continuously on base parts 3a, 3a', which are inserted into the printed circuit board 5 and soldered to the printed circuit board 5. By providing the walls 3c, 3c' in the contacts 3, 3' in this way, the connection pins 4, 4' are connected to the walls 3c, 3c'.
It is never inserted further back than c′ (on the right side of the diagram). Therefore, the connection pin 4' is reliably prevented from coming into contact with the tine portion 3d, and circuit malfunctions and circuit damage caused by this contact are reliably prevented.

2A and 2B are a plan view and a front view, respectively, of the contact 3 shown in FIG. 1 before it is inserted into the housing 2, and FIG. 3A,
FIG. 3B shows the contact 3' shown in FIG.
FIG. 2 is a plan view and a front view, respectively, showing the state before being inserted into the housing 2. FIG. Components that are the same as those shown in FIG. 1 are designated by the same numbers, and their explanation will be omitted.

In the contact 3 shown in FIGS. 2A and 2B, the tine portion 3d is provided on the opposite side to the insertion direction of the connecting pin 4 shown in FIG. 1, and the contact 3' shown in FIGS. 3A and 3B is Although a tine portion 3d' is provided on the insertion direction side of the connecting pin 4, portions unrelated to this tine portion will be explained in detail for both the contact 3 and the contact 3'.

When assembling the connector 1, the contacts 3 and 3' are inserted into the housing 2 from the right side in FIG. 1 with the left side shown in FIGS. 2A to 3B first, and are arranged at predetermined positions in the housing 2. , and then the tine portions 3d, 3d' are bent. During this insertion, an assembly jig (not shown) pushes the walls 3c, 3c' from the right side in the figure, thereby causing the contacts 3,
3' is inserted into the housing 2. in this way,
When assembling the connector, the walls 3c and 3c'
It also has the role of receiving the force of the assembly jig that pushes the contacts 3, 3' into the housing 2. In the vicinity of the walls 3c, 3c' of this contact, the base 3a,
Protrusions 3e and 3e' are provided that protrude from both sides of 3a', and these protrusions 3e and 3e' bite into the inner wall of the housing 2, and the contact inserted in a predetermined position is fixed in that position. contact pin 4,
4' is inserted and touches the walls 3c, 3c',
The contact never moves from its position.

Further, in the contacts 3, 3', the outer edges 3f, 3f' of the pair of contact portions 3b, 3b' partially have waveforms 3g, 3g'.
Only the protrusion 3g' contacts the inner wall 2b of the housing 2, and the entire outer edges 3f, 3f' contact the inner wall 2b of the housing 2.
This prevents contact failure from occurring due to a reduction in the elasticity that clamps the connecting pin 4 due to friction between the outer edges 3f, 3f' and the inner wall 2b. In addition, in this embodiment, the wall portions 3c and 3c' are also provided with a waveform 3.
Since contact portions 3b, 3h' are formed, contact portions 3b, 3h' are formed.
The entire outer edges 3f, 3f' of b' are more reliably prevented from coming into contact with the inner wall 2b of the housing 2.

FIGS. 4A and 4B are diagrams showing the contact 3 and the contact 3', respectively, cut out from a conductive material. This shows the state before it is bent, and the same numbers are given to the parts corresponding to the respective parts of the contacts 3, 3' shown in FIGS. 1 to 3B when the contacts are bent, and the explanation thereof will be omitted. As shown in the figure, a large number of contacts 3, 3' are cut out from a single sheet of conductive material in a row adjacent to each other laterally. Here, the waveforms 3g, 3g' of part of the outer edges 3f, 3f' of the contact portions 3b, 3b' complement each other at the boundary line of the adjacent contacts, so that the contacts 3, 3' can be cut out without waste. It's getting old. By creating shapes that complement each other in this way, the inventor estimates that the same number of contacts can be cut out using approximately 45% the area of conductive material compared to conventional methods, significantly reducing costs. . In addition, the base 3 of each contact
The carriers 3i, 3i' connected to the contacts a, 3a' connect each contact 3, 3' so that a large number of contacts 3, 3' can be automatically conveyed without separating during cutting, bending, etc. processes. and is separated from each contact 3, 3' before being inserted into the housing 2. carrier 3i,3
The holes 3j and 3j' provided at i' are for determining the conveyance pitch in the automatic conveyance described above.

(Effects of the Invention) As explained in detail above, in the connector contact of the present invention, the shape of the outer edge of the pair of contact portions partially has a waveform, so that when the contact is inserted into the housing, this Only the wave-shaped protrusions come into contact with the inner wall of the housing, the elasticity of the contact portion that clamps the inserted connecting pin is not lost, and no contact failure occurs between the connecting pin and the contact portion. Furthermore, when a large number of contacts are cut out side by side from a single sheet of conductive material, the waveforms are formed in shapes that complement each other at the boundaries of the adjacent contacts. The entire outer edge of the contact part can be cut out in contact with the entire outer edge of the contact part, and waste of conductive material can be reduced.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of one embodiment of the printed circuit board connector of the present invention, and FIGS. 2A and 2B are
The upper contact shown in the figure is a plan view and a front view, respectively, and FIGS. 3A and 3B are a plan view and a front view, respectively, of the lower contact shown in FIG. The figure shows a state in which the upper and lower contacts shown in FIG. 1 are cut out of a conductive material, and FIG. 5A shows the inside of a conventional printed circuit board connector. FIGS. 5B and 5C are views showing the conventional contact shown in FIG. 5A after and before bending, respectively. 1, 11...Printed circuit board connector, 2, 12
...Housing, 3, 3', 13...Contact, 3
a, 3a'...base, 3b, 3b', 13a...contact part,
3c, 3c'... Wall part, 3d, 3d', 13b... Tine part, 3e, 3e'... Protrusion, 3f, 3f'... Outer edge of contact part, 3g, 3g', 3h, 3h'... Waveform, 3i, 3
i'...Carrier, 3j, 3j'...Hole, 4, 4'15, 1
5'... Connection pin, 5, 14... Printed circuit board.

Claims (1)

[Claims] 1 Contacts 3, 3' inserted into the connector housing 2, with bases 3a, 3a' and connection pins 4, 4' that rise from the side edge of the base and are inserted from outside the housing with elasticity. a pair of contact portions 3b, 3b' which are held together by the tine portion 3a, and a tine portion 3 which is formed continuously on the base portion and protrudes outside the housing.
d, 3d', and the outer edge 3 of the pair of contact parts
The shapes of f and 3f' partially have waveforms 3g and 3g',
When a large number of the contacts are cut out from one sheet of conductive material in a row adjacent to each other laterally, the waveforms 3g, 3 are formed at the boundary lines of the adjacent contacts.
A contact for a connector characterized in that g′ complement each other so that the contact can be cut out without waste.