JPH081566Y2 - Fork contact for connector - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fork contact used by being incorporated in a connector such as a pin jack.

[0002]

2. Description of the Related Art As a fork contact of this type,
For example, the configuration disclosed in Japanese Utility Model Laid-Open No. 57-41278 is well known as a conventional example. The fork contact used in this conventional example is formed by punching out a metal hoop material with a press or the like, and its surface is plated with a good conductive material such as silver for stability of contact and prevention of corrosion. Has been done.

Since the fork contact of this conventional example uses a so-called post-plating means for plating after press-molding, the contact end with the pin terminal (the punching end face by pressing) is also plated. The contact with the pin terminals causes almost no problem in conductivity.

[0004]

Since the fork contact of the above-mentioned conventional example employs the post-plating means, the fork contact is in a disjointed state during press molding, so that storage management of parts and plating work are also performed during assembly work. However, it is indispensable to align the fork contacts, and the fork contact itself cannot be mechanically aligned because the contact terminals and the lead terminals have different protruding directions. However, there is a problem that the workability in the handling is extremely poor. Also, even if the fork contacts are manually arranged,
It is not always possible to perform accurate automatic supply to a connector, for example, a pin jack automatic assembly apparatus, and there is a problem in supply to an automatic assembly line in particular. Therefore, in the conventional example, there is a problem that must be solved in inefficient manual alignment work after press molding and supply to an automatic assembly line.

[0005]

As a concrete means for solving the above-mentioned problems of the prior art, the present invention forms a fork contact having a pair of contact terminals by punching out a metal hoop material having good conductive material layers on both front and back surfaces. and, there is provided a fork contact for the connector, characterized in that the good-material layer on the contact surface roll up because the contact edge of the pin terminal in the contact terminals, further proximal between contact terminals In addition, a cut-and-raised tongue piece is provided to close the hole on the bush side where the fork contact is mounted, and a large number of fork contacts are connected to the connecting band via connecting portions for disconnection .

[0006]

[Action] By the contact surface electrically good material layer roll up because the contact edge of the pin terminal in the contact terminals of the fork contacts, the electrical contact with the pin terminals is improved, prior to pressing By forming a good conductive material layer on the metal hoop material, for example, the plating process is significantly facilitated, and a large number of fork contacts are connected to the connecting band at a predetermined interval. It is possible to accurately supply the fork contacts to the automatic assembly line via the connecting band.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in more detail with reference to the illustrated embodiments. Reference numeral 1 denotes the fork contact as a whole, and the fork contact is formed by pressing a metal hoop material plated with good conductive material layers on both front and back surfaces. Are formed.

The fork contact 1 is formed by projecting a pair of contact terminals 3 and 4 of the same shape so as to face each other from a base 2, and a lead terminal 5 having a predetermined length is formed on the opposite side of the base 2. There is. Then, the base portion 2 is bent at a substantially right angle in the direction orthogonal to the contact terminals 3 and 4 at the central portion thereof.

Each tip portion 3a, 4a of the contact terminals 3, 4
Are formed so as to bulge inward in an arc shape, and their arcuate edges are formed over a predetermined width during or after punching of the fork contact 1, as shown in FIGS. The contact portions 6 and 7 are formed by performing drawing and ironing and turning them up, and the good conductive material layer is formed on the opposing surface of the contact portions 6 and 7.

A semicircular tongue piece 8 is formed on the base 2 side between the contact terminals 3 and 4, and the tongue piece 8 closes the insertion hole of the terminal pin on the bottom side. The base 2 is formed by bending the base 2 in a direction substantially opposite to the direction in which the base 2 is bent.

Further, protrusions 9 and 10 are formed on the outer edges of the contact terminals 3 and 4 on the base side and engage with the insertion groove of the bush described later.
Are formed integrally with each other. The projections 9 and 10 are slightly inclined on the free end side of the contact terminal to facilitate insertion into the insertion groove.

Fork contact 1 having such a structure
As shown in FIG. 4, during press working, a plurality of belt-shaped connecting strips 11 and 12 are formed in a state of being connected in series in the same direction via the connecting strips 11. Part 1
1 has a hole 13 for alignment. The positioning hole 13 is useful for position detection when supplying a fork contact to a connector, for example, a pin jack automatic assembly apparatus.

In the fork contact 1 thus formed, the connecting strip portion 11 is wound in a coil shape for storage management, and when it is used, it is set in a connector, for example, an automatic assembly device of a pin jack, and the It is installed in a predetermined position of the conductive cap unit. Then, in the automatic assembling apparatus, the connecting portion 12 is cut off along the imaginary line a, and the base portion 2 is assembled at the position of the imaginary line b by being bent at a right angle as described above.

An example of a connector in which the fork contact 1 is incorporated, for example, a conductive cap unit 14 of a pin jack, is shown in FIGS.
5 and a pair of bushes 16. A pair of conductive caps 15a and 15b are formed on the earth metal fitting 15 so as to project. The bush 16 is provided in the conductive cap.
Are fitted and attached respectively.

The bush 16 has a cylindrical shape at the tip side 16a and a square block shape at the base side 16b, and is provided with a hole 17 along the axis for receiving a terminal pin from the outside. Slits 18 and 19 having a predetermined width and a predetermined length are provided on the upper and lower sides of the inner side along the depth direction from the base side 16b, and the fork contact 1 is inserted and incorporated into the slits from the base side. . In this case, since the contact terminals 3 and 4 of the fork contact are formed by slightly turning up the contact edges thereof to form the contact surfaces 6 and 7, without changing the size or shape of the slit, It can be easily inserted.

Further, on the base side 16b of the bush 16, a plurality of slits 20 are provided on the side surface from the back side, and a pair of engaging tongue pieces 21 also serving as positioning for engaging with the earth metal fitting 15 are contrasted. Is provided for the purpose.

When the fork contact 1 is inserted into the bush 16 and assembled, if the fork contact 1 is inserted from the base side 16b to a predetermined position, the projections 9 are formed on the rear side wall surfaces of the slits 18 and 19. , 10 are pressed together, and the base 2 of the fork contact is fitted into one of the slits 20 to stabilize the mounting state. At the same time, the hole 17 is closed by the base portion 2 bent at a right angle and the tongue piece 8 between the contact terminals 3, 4.

[0018]

As described above, in the fork contact according to the present invention, a metal hoop material having good conductive material layers on both front and back surfaces is punched to form a fork contact having a pair of contact terminals. by that the contact surface of the good-material layer roll up because the contact edge of the terminal, in order to form a good-material layer metal hoop material in such earlier plating, the rear as in the prior art plating Since the good conductive material layer becomes the contact surface with the pin terminal without taking the method,
There is an excellent effect that the contact area becomes wide and the electrical contact becomes good.

Further, by providing a cut-and-raised tongue piece on the base side between the contact terminals for closing the bush side hole for mounting the fork contact, the hole for inserting the pin terminal can be closed on the base side. Even if a child, for example, holds a wire or nail and inserts it into the insertion hole of the pin terminal from the front side of the connector in that usage state, it will stop at the tongue and the base and cannot be inserted any further. Therefore, it is possible to prevent an accident such as electric shock or short circuit of the internal circuit.

Furthermore, many fork contacts are separated.
With the structure in which the fork contact is connected to the connecting band through the connecting portion for bending, the fork contact can be accurately supplied to the automatic assembly line of the connector.

[Brief description of drawings]

FIG. 1 is a side view of a fork contact according to the present invention.

FIG. 2 is an enlarged plan view of the contact terminal of the fork contact before forming a contact surface.

FIG. 3 is an enlarged sectional view taken along line AA of FIG. 1;

FIG. 4 is a side view showing a state in which a fork contact according to the present invention is connected to a connecting band.

FIG. 5 is a side view, partly in section, showing a state in which the fork contact according to the present invention is attached to the conductive cap unit of the connector.

FIG. 6 is a rear view of the conductive cap unit.

[Explanation of symbols]

 1 fork contact 2 base part 3,4 contact terminal 3a, 4a contact end part 5 lead terminal 6,7 contact surface 8 cut and raised tongue piece 9,10 protrusion 11 connecting band 12 connecting portion 13 alignment hole 14 conductive cap unit 15 Ground metal fittings 15a, 15b Conductive cap 16 Bushing 16a Tip side 16b Base side 17 Holes 18, 19, 20 Slit 21 A pair of engaging tongue pieces

Claims (3)

[Scope of utility model registration request] 1. A by punching a metal hoop material having a good-material layer on both sides to form a fork contact having a pair of contact terminals, good conductivity and roll up because the contact edge of the pin terminal in the contact terminals A fork contact for connectors, which has a material layer as the contact surface. 2. The fork contact for a connector according to claim 1, wherein a cut-and-raised tongue piece is provided on the base side between the contact terminals to close a hole on the bush side where the fork contact is mounted. 3. A number of fork contacts for disconnecting
The fork contact for a connector according to claim 1, wherein the fork contact is connected to the connecting band through the connecting portion .