JP2564774Y2 - 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 jack for relaying an electric signal, and more particularly to a mechanism for fitting to a plug.

[0002]

2. Description of the Related Art A conventional jack will be described with reference to FIG. In the figure, 1 is a jack, and 2 is a stereo plug. The stereo plug 2 is electrically divided into a tip 5, an intermediate ring 6, and a ground sleeve 7 via insulating collars 3 and 4. In the insertion opening 8 of the jack 1, there are provided contact pins 9, 10, and 11 which respectively resiliently contact the chip 5, the intermediate ring 6, and the ground sleeve 7 of the stereo plug 2. Contact pins 9,1
1 and three contact pins 9 and 1
The stereo plug 2 is formed so as to pinch the stereo plug 2 at 0 and 11.

[0003]

[Problems to be Solved by the Invention] Since the conventional jack clamps the plug only by the elasticity of the contact pin,
In order to securely hold the inserted plug, it is necessary to increase the elasticity of the contact pin. However, the elasticity of the contact pin is restricted by the external dimensions of the jack and the like, and the plug may be accidentally detached from the jack due to insufficient holding force of the plug.

[0004] Therefore, there arises a technical problem to be solved in order to enhance the holding force of the jack to the plug to improve the reliability, and the present invention aims to solve this problem. is there.

[0005]

SUMMARY OF THE INVENTION The present invention has been proposed to achieve the above-mentioned object, and is provided within a jack and a plug insertion port provided in the jack.
At the rear, a slider is provided that can slide a certain range in the direction perpendicular to the insertion direction of the plug , and the plug is also attached to the slider.
An opening for insertion is provided, and on one side of the opening
A cam is formed, and on the other side of the open portion facing the cam,
Has a contact pin facing the cam ,
Further , a spring is interposed between the jack body and the slider to urge the cam toward the side of the inserted plug,
When the plug is inserted from the insertion slot of the plug,
Abutting against the cam to press the cam,
The slider is moved rearward against the bias of the spring.
And the contact pin also moves to the plug side
And, further, upon insertion of the plug to a predetermined position, nipping the flop <br/> lugs by said slider and said contact pins
A jack is provided which is configured to be fixed .

[0006]

When the plug is inserted into the plug insertion slot of the jack, the tip of the plug comes into contact with the cam provided on the side surface of the slider. When the plug is further inserted, the cam causes the slider to retreat laterally against the bias of the spring. When the plug is inserted to a predetermined position, the plug is clamped and fixed by a slider biased by a spring and a contact pin arranged at a position facing the plug.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. 1 to 4 show the stereo jack 21, FIG. 1 is a front view, FIG. 2 is a plan view, FIG. 3 is a sectional view taken along line AA of FIG. 1, and FIG. 4 is a partially cutaway front view. The left jack 22 of the stereo jack 21 has two contact terminal groups B,
C and is formed so that either of the two signals can be selectively relayed to the plug depending on the length of the plug to be inserted.

[0008] When signals are transmitted independently of the left and right by a general RCA pin plug, the left and right jacks 22 and 23 are used.
When the pin plugs are respectively inserted, the pins 25 of the pin plugs 24 are pressed against the + contacts 28 and 29 of the contact terminal group B provided in the insertion ports 26 and 27 of the jacks 22 and 23, and the cylindrical shield contact of the pin plug 24 is formed. 30 is fitted and electrically connected to the shield contacts 31 and 32 of the jacks 22 and 23. In this case, the tip of the pin 25 of the pin plug 24 does not reach the contact terminal group C in the left jack 22.

A slider 33 is mounted at the rear of the insertion opening 26 of the left jack 22. FIG. 5 shows a slider 33, as shown in the figure, in which the front and bottom surfaces are open and a cam 34 is formed on the left inner wall surface. The shape of the cam 34 is formed so as to engage with a groove provided in a pin of a plug described later. The top plate is provided with holes 38, 39, 40 for engaging the contact pins 35, 36, 37 shown in FIG.

As shown in FIGS. 2 to 4, a housing portion 41a for a slider 33 is formed on a jack base 41 molded with a resin, and an upper cover 42 is engaged to slide the slider 33 in the left-right direction. It is stored movably. FIG.
3, three contact pins 35, 36 and 37 are press-fitted and fixed to the bottom plate of the jack base 41, and the upper ends thereof are engaged with the holes 38, 39 and 40 of the slider 33, respectively. The three contact pins 35, 36, and 37 respectively urge the slider 33 rightward in the figure, but the slider 33 is connected to the right side wall 42R of the upper cover 42 and the slider 3
3 and is in contact with the left side wall 42L of the upper cover 42.

FIGS. 6 and 7 show a plug 51 to be attached to the left jack 22 of the stereo jack 21 and to be connected to the contact terminal group C. The plug 51 is for optically converting a digital electric signal and transmitting the same. A photoelectric conversion unit 52 in which a photoelectric conversion element and an IC are sealed in a resin package and an optical fiber cable 53 are fixed in a ferrule 54, and an optical fiber One end of the cable 53 and the center of the photoelectric conversion element are formed so as to coincide with each other. The photoelectric conversion unit 52 is connected to a circuit board 55, and a pin 56 is inserted into a central portion of the circuit board 55 and soldered.

The diameter of the pin 56 and the inner diameter of the shield contact 57 are formed to have the same dimensions as the RCA pin plug 24 so that they can be inserted into the RCA pin jack. However, the pin 56 is the pin 2 of the RCA pin plug 24.
The two terminal rings 59 and 60 and the tip 61 are connected via insulating collars 62 and 63 to the end of an insulating sleeve 58 longer than five. The circuit shown in FIG. 6 supplies power to the circuit board 55 through the chip 61 and the shield contact 57, and inputs digital signals from the terminal rings 59 and 60 to the circuit board 55 or the terminal ring 5 from the circuit board 55.
Digital signals are output to 9, 60.

FIG. 8 shows a state in which the RCA pin plug 24 is inserted into the left jack 22 of the stereo jack 21, and FIG. 9 shows a state in which the plug 51 shown in FIG. 6 is inserted. Pin 56 of plug 51 is RCA pin plug 2
4 is longer than the pin 25, the tip 61 presses the cam 34 of the slider 33 when the plug 51 is inserted, and moves the slider 33 to the right. At the same time, contact pins 35, 3
The elastic members 6 and 37 also press against the side surfaces of the pins 56 in conjunction with the slider 33 by their own elasticity. When the pin 56 is inserted to a predetermined position, the vertex 34 a of the cam 34
The pin 56 engages with the groove 61 a provided in the
And the contact pins 35, 36, and 37 pinch and fix both sides. At this time, the contact pins 35,
The contacts 36 and 37 are pressed against the chip 61 and the terminal rings 59 and 60, respectively, to be in a connected state, and the positive contact 28 for analog signals is in contact with the insulating sleeve 58.

When the plug 51 is removed from the left jack 22, the slider 33 is pressed to the left by the urging of the leaf spring 43, and the contact pins 35, 36 and 37 engaged with the holes 38, 39 and 40 are plugged. The pin 51 is separated from the pin 56 to return to the state shown in FIG. As described above, since the contact pins 35, 36, and 37 are brought into contact with the slider 56 in contact with the pin 56, even when the pin 25 of the RCA pin plug 24 is slightly longer than the standard, the pin 25 contacts the contact pin 37. No, Jack 2
1 can be made as small as possible.

The present invention can be variously modified without departing from the spirit of the present invention, and it goes without saying that the present invention extends to those modifications.

[0016]

According to the present invention, as described in detail in the above-described embodiment, both sides of the plug are pinched by the contact pin and the slider. Can be strengthened. Therefore, it is a practically valuable idea that can enhance the coupling force between the plug and the jack to prevent the plug from being accidentally pulled out and contribute to the improvement of reliability.

[Brief description of the drawings]

FIG. 1 is a front view of a jack.

FIG. 2 is a plan view of a jack.

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

FIG. 4 is a partially cutaway front view of a jack.

FIG. 5 shows a slider, A is a plan view, B is a front view, C
Is a rear view and D is a right side view.

FIG. 6 is a side view of the plug.

FIG. 7 is a side sectional view of the plug.

FIG. 8 is an explanatory plan view showing a state where an RCA pin plug is connected to a jack.

FIG. 9 is an exemplary plan view showing a state where the plug shown in FIG. 6 is connected to a jack;

FIG. 10 is an explanatory diagram showing a connection state between a conventional jack and a plug.

[Explanation of symbols]

 21 Stereo Jack 22 Left Jack 23 Right Jack 24 RCA Pin Plug 28, 29 + Contact 31, 32 Shield Contact 33 Slider 34 Cam 35, 36, 37 Contact Pin 43 Leaf Spring 51 Plug 56 Pin 57 Shield Contact 58 Insulation Sleeve 59, 60 Terminal Ring 61 Tip

Claims (1)

(57) [Scope of request for utility model registration] 1. Inside a jack, provided in the jack
A slider is provided at the rear of the insertion opening of the plug, which can slide in a predetermined range in a direction orthogonal to the insertion direction of the plug , and an opening for inserting the plug is also provided in the slider.
And a cam is formed on one side of the opening,
A contact pin is provided on the other side of the open
Are arranged opposite to, further, by interposing a spring between the jack body and the slider, the cam urges the side surface direction of the plug to be inserted, the plug is a plug insertion opening
When the plug is inserted, the tip of the plug contacts the cam.
To press the cam, and by the action of the cam, the slider
Is retracted against the bias of the spring, and the contour
The pin also moves to the plug side, and the plug is
The plug is fixed by pressure by the contact pin and the slider when inserted up to
A jack characterized by the following .