JP2595939Y2 - Pin jack - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pin jack to which a pin plug is connected.

[0002]

2. Description of the Related Art A conventional pin jack comprises a body molded from an insulating material, an outer contact covering an outer peripheral surface of a pin plug insertion portion of the body, and an inner contact inserted into the inner peripheral surface of the pin plug insertion portion. Inner contact. The outer contact is connected to a cover contact piece of the pin plug, and the inner contact is connected to a connection pin of the pin plug. By the way, no cover is attached to the rear end surface side of the body, that is, the surface opposite to the surface into which the pin plug is inserted, and the inner contact is exposed.

[0003]

The above-described conventional pin jack has the following problems. That is, when a plug or other thing longer than the specified value is inserted into the pin plug insertion part, it directly contacts the inner contact,
Depending on the insertion force, the inner contact may fall off the body or deform. For example, in the International Electrotechnical Commission Standards (hereinafter referred to as "IEC Standards"), "Electronic equipment connected to a power supply and other similar equipment, and safety related to those used at home or equivalent places , There is an inspection item that states, "A straight bare wire having a diameter of 1 mm and a length of 100 mm is inserted with a force of 10 N into any place within 25 mm from each bushing of the terminal."
When such a test is performed on the conventional pin jack as described above, the inner contacts may fall off.

If a back cover separate from the body is attached to the rear side of the body in order to prevent the inner contact from falling off, the inner contact can be prevented from falling off from the body, but the number of parts increases and the number of steps is increased. It is not preferable because the cost is increased due to an increase in the number of the components.

The present invention has been made in view of the above circumstances, and even if a pin plug or the like longer than the maximum specified value is inserted into the pin plug insertion portion, the inner contact may fall off or be deformed from the body. It is an object of the present invention to provide a pin jack which can satisfy the IEC standard without causing any cost increase.

[0006]

A pin jack according to the present invention is fitted with a pin plug having a connection pin having a substantially uniform thickness.
A pin jack to be fitted, a body molded from an insulating material, an outer contact covering an outer peripheral surface of the pin plug insertion portion of the body, and a pin plug insertion hole provided in the pin plug insertion portion. The pin plug insertion hole of the body includes a large diameter portion into which the connection pin of the pin plug is inserted, and a small diameter portion communicating with the large diameter portion. The depth dimension is set equal or substantially equal to the maximum specification value of the insertion length of the pin plug, and the small diameter portion is
The inner diameter is formed smaller than the connection pin, and
The contact is located across the traverse of the pin plug insertion hole.
So that the front of the cross section is located within the small diameter section.
Provided.

[0007]

1 is a schematic sectional view of a pin jack according to an embodiment of the present invention, FIG. 2 is a schematic sectional view of a body constituting the pin jack, and FIG. 3 is an external view of an outer contact and an inner contact. It is a perspective view.

The pin jack according to the present embodiment has a thickness
Mates with pin plugs having uniform connection pins 410
A pin jack, comprising four cylindrical projections 110a-1
A body 100 having a cylindrical projection 10d;
Outer contacts 20 covering the outer peripheral surfaces of a to 110d
0, a resin washer 130 applied to the tip of each of the cylindrical protrusions 110a to 110d,
a to 110d, and an inner contact 300 to be inserted into insertion holes 120a to 120d. The cylindrical projections are shown as 110a and 110b in the drawing.
And only two are represented.

As shown in FIG. 3A, the outer contact 200 includes a cylindrical cover portion 210 which covers the cylindrical projecting portions 110a to 110d, and a terminal portion 220 formed integrally with the cover portion 210. It is configured. The terminal 220 is bent in a direction substantially perpendicular to the cover 210. The cover 210 has a pin plug
The opening 211 into which the connection pin 410 of the gang is inserted is opened. The outer contact 200 is connected to a cover contact piece (not shown) of a pin plug (not shown).

On the other hand, the inner contact 300 is
As shown in (B), the forked portion 310 and the forked portion 31
0 and a terminal section 320 formed integrally. The terminal portion 320 extends in a direction substantially orthogonal to the forked portion 310. A protrusion 311 is formed inside the tip of the forked portion 310. Also, this bifurcated part 3
10 is an insertion hole 120a (or 120b to 120b) described later.
d) It has a transverse portion 312Y that crosses inside. The inner contact 300 is connected to a connection pin 410 of a pin plug. The front surface 3 at the base end of the forked portion 310
12 (the front surface of the cross section 312Y) is located behind the front end of a later-described protruding part 123a of the body 100, and
2a. A pair of convex portions 311
The dimension between, Ri by the outer diameter of the pin plug of the connection pin 410
They are young interference smaller set. Therefore, a click feeling can be produced when the pin plug is connected.

The body 100 is formed of an insulating synthetic resin, and has four cylindrical projections 110a to 110d formed in a cross-shaped shape. This cylindrical protrusion 110a-11
In 0d, insertion holes 120a to 120d are opened. Also, a plurality of ribs (not shown) for fixing the outer contact 200 covered on the base end side of the cylindrical protrusions 110a to 110d.
Is provided.

A ring-shaped resin washer 130 is mounted on the front surface of the cylindrical protrusions 110a to 110d. The resin washer 130 is interposed between the cylindrical protrusions 110a to 110d and the outer contact 200, so that the cylindrical washer 110a
Attached to ~ 110d. And this resin washer 13
0 and the cylindrical protrusions 110a to 110d
0a to 140d are configured.

On the outer surface of the body 100, there are formed grooves for the terminal portions 320 of the inner contacts 300, the terminal portions 220 of the outer contacts 200, and the like.

In the following description, the cylindrical projection 110a is taken as an example, but it goes without saying that the other three cylindrical projections 110b to 110d are similarly configured.

The insertion hole 120a of the cylindrical projection 110a is
0 from the front side to the back side, but the insertion hole 12
On the back side of 0a, a pair of substantially semi-cylindrical projecting portions 123a are formed so as to protrude. Here, the area from the front side to the ridge 123a is referred to as a large-diameter section 121a, and the portion having the ridge 123a is referred to as a small-diameter section 122a. The inner diameter of the large diameter portion 121a is set slightly larger than the outer diameter of the connection pin 410 of the pin plug. Further, the inner diameter of the small diameter portion 122a is set smaller than the connection pin 410. Further, the projecting portion 123a is formed on both upper and lower surfaces.

The depth dimension A of the large diameter portion 121a
Is set smaller than the maximum standard value L of the insertion length of the connection pin 410 by an amount corresponding to a thickness B of the resin washer 130 described later. Therefore, even if the connection pin 410 having the longest insertion length is inserted, all of the connection pins 410 will fit in the large-diameter portion 121a. Further, in the insertion hole 120a, a pair of opposed groove portions 124a for fitting the forked portions 310 of the inner contact 300 is formed on both left and right side surfaces over the entire length. Note that the inner contact 300 is a small-diameter portion 1.
22a, that is, the insertion hole 12
0a.

The front surface of the cylindrical protrusion 110a and the outer contact
A substantially ring-shaped resin washer 130 is interposed between the cover portion 210 and the cover portion 210. Opening of this resin washer 130
The inner diameter of 131 is set substantially equal to the inner diameter of large-diameter portion 121a of insertion hole 120a. This resin washer 130 and cylindrical protrusion
The pin plug insertion part 140a is constituted by 110a. The resin washer 130 indicates the type of the pin plug to be inserted into the pin plug insertion portion 110a, and the like.
There are several types with various different colors.

The pin plug insertion hole 14 formed by the large diameter portion 121a of the insertion hole 120a and the opening 131 of the resin washer 130.
The depth dimension A + B of 0a is set equal to the maximum standard value L of the insertion length of the connection pin 410 of the pin plug.

[0019] Even Pinpura grayed with long connection pin 410 than the maximum standard value L on the configured pin jack thus is <br/> connected, the tip of the connecting pin 410 is a small diameter portion 1
Further insertion by the ledge portion 123a constituting the 2 2a is prevented. For this reason, the tip of the connection pin 410 is connected to the base front surface 312 of the forked portion 320 of the inner contact 300.
(The front surface of the cross section 312Y) , so that the inner contact 300 does not fall off or deform from the body 100. The same applies when a long foreign object is inserted.

In the above-described embodiment, one body 100 is provided with four cylindrical protrusions 110a to 110d. However, the present invention is not limited to this, and one body 100 may be provided with one body.
It is also possible to provide 1-3, or 5 or more cylindrical projections on the 100.

The small-diameter portion 122a has been described as being formed by a pair of substantially semicylindrical projections 123a. It may be configured.

Further, the depth A + B of the pin plug insertion hole 140a is set to be equal to the maximum standard value L of the insertion length of the connection pin 410 of the pin plug, but the present invention is not limited to this. The insertion length of the connection pin 410 may be set to be slightly larger than the maximum standard value L, that is, substantially equal to the maximum standard value L.

[0023]

[Effect of the Invention] The pin jack according to the present invention is approximately thin.
Pins to be fitted with pin plugs with uniform connection pins
A jack, inner contact which is inserted a body molded from an insulating material, and an outer contact for covering the outer peripheral surface of the pin plug insertion portion of the body, the pin plug insertion hole provided in the pin plug insertion portion The pin plug insertion hole of the body includes a large-diameter portion into which the connection pin of the pin plug is inserted, and a small-diameter portion communicating with the large-diameter portion. Is set to be equal to or substantially equal to the maximum specification value of the insertion length of the small-diameter portion.
The inner contact is more narrow
A traversing portion that traverses the pin plug insertion hole;
The front surface is provided so as to be located within the small diameter portion.
You. Therefore, even if a pin plug or the like longer than the maximum specification value is inserted into the pin plug insertion portion, the connection of the pin plug does not occur.
The tip of the connecting pin etc. does not contact the front of the cross section
Therefore, a pin jack meeting the IEC standard can be obtained without the inner contact falling off or deforming from the body. In addition, since separate components are not required, there is no increase in cost.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a pin jack according to an embodiment of the present invention.

FIG. 2 is a schematic sectional view of a body constituting the pin jack.

FIG. 3 is an external perspective view of an outer contact and an inner contact.

[Explanation of symbols]

 100 Body 110a to 110d Cylindrical protrusion 120a to 120d Insertion hole 121a to 121d Large diameter part 122a to 122d Small diameter part 123a to 123d Portion 130 Resin washer 140a to 140d Pin plug insertion part 200 Outer contact 300 Inner contact 410 (of pin plug) Connection pin

Claims (2)

(57) [Scope of request for utility model registration] A pin having a connection pin having a substantially uniform thickness.
A pin jack fitted with a lug, a body formed of an insulating material, an outer contact covering an outer peripheral surface of a pin plug insertion portion of the body, and a pin plug insertion provided in the pin plug insertion portion. An inner contact inserted into the hole, wherein the pin plug insertion hole of the body includes a large diameter portion into which a connection pin of the pin plug is inserted, and a small diameter portion communicating with the large diameter portion;
The depth dimension of the large diameter portion is set to be equal to or approximately equal to the maximum specification value of the insertion length of the pin plug, and the small diameter
The portion has an inner diameter formed smaller than the connection pin, and
The inner contact traverses inside the pin plug insertion hole
A cross section, and the front of the cross section is located within the small diameter section.
A pin jack characterized by being provided as follows . 2. The pin jack according to claim 1, wherein the small diameter portion is formed by providing a protruding pulse on an inner surface of the pin plug insertion hole.