JPH08191343A - Modular jack fixing structure of telephone set - Google Patents

Abstract

PURPOSE: To easily insert and extract a modular jack connected to one end of the cord, etc., of the telephone set and to obtain a tight fitting state. CONSTITUTION: This structure is equipped with a fitting wall 15 erected in a housing 11 from the edge of a plug insertion opening 12 and the modular jack 20. Grooves 22 are recessed in both flanks of the modular jack 20 and engagement projections 23 are formed on the bottom surfaces. In the fitting wall 15, an opening part 16 into which the jack is inserted and a guide projection 17 onto which the groove 22 is fitted are formed in the direction A crossing the insertion direction of the modular jack at right angles. A tongue piece 19 which is elastically deformed by the engagement projections 23 and engages the engagement projection 23 after the insertion is formed integrally with a housing 11 while adjoining to the plug insertion opening 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a modular jack fixing structure in which a modular plug connected to one end of a telephone cord or the like is inserted and removed.

[0002]

2. Description of the Related Art In recent years, a telephone case, a cord and a handset cord have been connected by a modular jack / modular plug called a modular connector. The structure of this modular connector is characterized in that the modular plug can be attached / detached to / from the modular jack with one-touch operation, and can be firmly connected by the action of the lock structure in the inserted state. The modular jack that constitutes one of the modular connectors is fixed inside the telephone housing.

4 and 5 show a conventional modular jack fixing structure for a telephone, which will be described with reference to the drawings. Reference numeral 25 is a modular plug provided with an elastic engagement rod 26, to which one end of a machine cord 27 is electrically connected. Three
Reference numeral 0 denotes a lower housing which constitutes a telephone case, and has a rectangular plug insertion hole 31 into which the modular plug 25 is inserted. At the center of the three sides of the opening edge of the plug insertion port 31, there are three elastic engagement pieces 32 each having a claw portion 33 formed at the tip, and on the other side of the opening edge of the remaining one side,
A pair of ribs 34 are provided upright inside the lower housing 30. In addition, four mounting pieces 35 for mounting the modular plug 25 are provided at four corners of the plug insertion port 31.
Is provided so as to project into the plug insertion port 31. Reference numeral 37 is a modular jack provided with a plug insertion opening 38 into which the modular plug 25 is inserted and removed.

Conventionally known terminal wires are provided on the inner surface of the plug insertion opening 38 of the modular jack 37 and the outer surface of the modular plug 25, respectively, and the modular plug is inserted into the plug insertion opening 38 of the modular jack 38. 25
Is inserted, these terminal wires come into contact with each other and are electrically connected. The modular jack 37 is inserted from above the plug insertion port 31 by utilizing the elastic deformation of the elastic engaging piece 32, the bottom surface is placed on the placing piece 35, and the upper surface is the claw portion of the elastic engaging piece 32. 33, one side of which is rib 3
By engaging with 4, the plug insertion port 38 is fixed to the housing 37 so that the plug insertion port 38 faces the plug insertion port 31. Also, when removing the modular jack 37 from the housing,
This is performed by elastically deforming the elastic engagement piece 32 outward. Since the elasticity of the elastic engagement piece 32 is utilized in this way, it is easy to attach and detach.

[0005]

However, in the above-described conventional modular jack fixing structure, the attaching / detaching direction B of the modular jack 37 to / from the plug insertion port 31 and the insertion of the modular plug 25 into the plug insertion port 31. Since the direction B is the same, when the modular jack 25 is inserted, the modular jack 37 has the elastic engagement piece 32.
If it comes off or if the load when inserting is large,
There is a problem that the elastic engagement piece 32 is damaged.

Therefore, the present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a modular jack fixing structure for a telephone which is easy to put on and take off and is firmly attached. Especially.

[0007]

In order to achieve this object, in a modular jack fixing structure for a telephone according to the present invention, a plug insertion port for inserting a modular plug is formed in a housing and grooves are formed on both side surfaces. The recessed modular jack,
In the telephone fixed to the inside of the housing so as to face the plug insertion port, inside the housing at the opening edge of the plug insertion port,
A mounting portion having a U-shape in a plan view, which opens in one direction along the surface of the housing and a direction in which the modular plug is inserted, is provided upright integrally with the housing, and both inner surfaces of the mounting portion are provided with the modular jack. An elastically deformable tongue is provided on the housing, which is provided with a protrusion that engages with the groove, and whose tip forms one side of the opening edge of the plug insertion port, and which engages near the insertion port of the modular jack. It is formed integrally.

[0008]

According to the present invention, the attachment / detachment of the modular jack is
The tongue is elastically deformed, and the modular jack is held in the mounting part by the engagement between the groove of the modular jack and the ridge of the mounting part, so a load is applied to the tongue side when the modular plug is inserted. Never.

[0009]

An embodiment of the present invention will be described below with reference to the drawings. 1 is a perspective view of a modular jack fixing structure of a telephone according to the present invention, FIG. 2 (a) is a plan view thereof, FIG. 2 (b) is a sectional view taken along the line IIb-IIb of (a), and FIG. 3 is a telephone according to the present invention. FIG. 6 is a plan view, a side view and a bottom view of a telephone adopting the modular jack fixing structure of FIG. In these figures,
The housing of the telephone, generally designated by reference numeral 1, is composed of an upper housing 2 and a lower housing 3 which are both made of synthetic resin, and these housings 2 and 3 are assembled to each other by screws. 4 is an upper housing 2
A pair of concave fittings for placing the handset on the surface of the
Reference numeral 5 is a hook button provided in the upper recessed portion 4, 6 is a dial button, and 7 is a known function button.

The bottom surface of the lower housing 3 is formed in a generally inverted V shape when viewed from the side, and has a recessed fitting portion 11 formed in a flat shape at the center. Reference numeral 12 is a plug insertion hole formed substantially in the center of the concave fitting portion 11, 18 is a tongue piece described below formed adjacent to the plug insertion opening 12, 13 is a telephone cord of a handset, and 14 is a lower housing 3. It is a modular jack that is attached to a printed circuit board inside and into which a modular plug (not shown) connected to one end of the telephone cord 13 is inserted.

On the three sides of the opening edge of the plug insertion port 12,
A mounting wall 15 as a U-shaped mounting portion in a plan view is provided upright inside the housing, and on this mounting wall 15, a direction A orthogonal to the insertion direction B of the modular plug 25 into the plug insertion port 12, that is, An opening 16 for inserting a later-described modular jack 20 into the mounting wall 15 along the inner surface of the recessed fitting portion 11.
In addition, a pair of guide ridges 17 are provided so as to be opposed to each other on upper portions of both inner side surfaces of the mounting wall 15. The tongue piece 18 is formed in a thin shape, and a cut groove 19 is provided on both sides so that the tip end portion 18a can be elastically deformed in the B direction, and the tip end portion 18a is one of the opening end edges of the plug insertion opening 12.
A root portion is extended so as to form a side, and a root portion is integrally formed with the concave fitting portion 11.

The modular jack 20 is provided with a plug insertion opening 21 into which a modular plug 25 is inserted, and a groove 22 which engages with the guide projection 17 is formed on both side surfaces of the modular jack 20. On the bottom surface, a step-like engagement protrusion 23 is provided so as to protrude downward.

With this structure, the modular jack 20 is moved in the direction A so that the groove 22 is engaged with the guide projection 17, and the lower end surface of the engaging projection 23 of the modular jack 20 is used. While pushing the tongue piece 18 downward to elastically deform it, the modular jack 20 is opened.
6 into the mounting wall 15. Modular jack 20
When the plug is completely inserted into the mounting wall 15, the plug insertion opening 21 faces the plug insertion opening 16 and the engagement projection 23 fits into the plug insertion opening 16 to disengage the tongue piece 18 of the engagement projection 23. Since the pressure on the tongue piece 18 is released, the tongue piece 18 elastically returns. Since the rear end surface of the engagement protrusion 23 engages with the tip end portion 18a of the tongue piece 18 that has elastically returned, the movement of the modular jack 20 in the direction opposite to the A direction is restricted and the detachment from the mounting wall 15 is prevented. To do.

In the modular jack 20 mounted in the mounting wall 15 as described above, the groove 22 formed along the direction A orthogonal to the inserting direction B of the modular plug 25 and the guide wall 17 are engaged with each other. So modular plug 2
The load on the modular jack 20 when inserting 5 is
Since the groove 22 which is a rigid body and the guide projection 17 hold the modular jack 20, the modular jack 20 can be prevented from coming off, and the modular jack 20 is firmly fixed in the mounting wall 15.
Moreover, since no load is applied to the tongue piece 18 when the modular plug 25 is inserted, damage to the tongue piece 18 can be prevented.
Further, when the modular jack 20 is removed from the mounting wall 15, the tongue piece 18 can be elastically deformed in the direction opposite to the direction B, so that it can be easily attached and detached.

In this embodiment, the modular jack 2
At the lower end of 0, the tongue piece 18 is pressed downward, and the step-like engagement protrusion 23 that engages with the tip end portion 18a is provided. However, the engagement protrusion 23 may have various shapes. A projecting strip extending in the front-rear direction of the modular jack 20 may be used. Further, even when the engaging projection 23 is not provided, the lower end of the modular jack 20 is inserted into the mounting wall 17,
It is needless to say that the tongue piece 18 may be pressed and a portion that engages with the tip end portion of the tongue piece 18 when it is fitted into the plug insertion port 12 may be formed.

[0016]

As described above, according to the present invention, the modular jack having the plug insertion port into which the modular plug is inserted is formed in the housing, and the groove is formed on both side surfaces. In the telephone fixed to the inside of the casing so as to face the inside of the casing, inside the casing of the opening edge of the plug insertion opening, one side direction along the casing surface and the direction in which the modular plug is inserted -Like mounting part is erected integrally with the housing, and projections that engage with the grooves of the modular jack are provided on both inner side surfaces of this mounting part, and the tip is the opening edge of the plug insertion port. Since the elastically deformable tongue that forms one side and engages near the insertion port of the modular jack is formed integrally with the housing, the modular jack installed in the mounting part is Formed in orthogonal directions Since it is held by the engagement of the rigid groove and the ridge, the modular jack will not come off when the modular plug is inserted, and the tongue will not be loaded, preventing damage. be able to. Furthermore, since the attachment / detachment can be performed only by elastically deforming the tongue piece, it can be easily performed.

[Brief description of drawings]

FIG. 1 is a perspective view of a modular jack fixing structure for a telephone according to the present invention.

FIG. 2A is a plan view of a modular jack fixing structure for a telephone according to the present invention, and FIG. 2B is a sectional view taken along line IIb-IIb of FIG.

3A and 3B show a telephone adopting a modular jack fixing structure of a telephone according to the present invention, FIG. 3A is a plan view, and FIG.
Is a side view and (c) is a bottom view.

FIG. 4 is a perspective view of a conventional modular jack fixing structure for a telephone.

FIG. 5 is a cross-sectional view of a conventional modular jack fixing structure for a telephone.

[Explanation of reference numerals] 12 ... Plug insertion port, 15 ... Mounting wall, 16 ... Opening part, 1
7 ... Guide ridge, 18 ... Tongue piece, 20 ... Modular jack, 21 ... Plug insertion port, 22 ... Groove, 23 ... Engaging protrusion,
25 ... Modular plug.

Claims (1)

[Claims] 1. A telephone in which a modular jack having a plug insertion hole for inserting a modular plug and a groove on both sides is fixed inside the housing so as to face the plug insertion opening. In the inside of the housing at the opening edge of the plug insertion port, a mounting portion having a U-shape in plan view, which opens in one direction along the housing surface and in the direction in which the modular plug is inserted, stands upright with the housing. In addition, the protrusions that engage with the groove of the modular jack are provided on both inner side surfaces of the mounting portion, and the tip of the protrusion forms one side of the opening edge of the plug insertion port. A modular jack fixing structure for a telephone, characterized in that an elastically deformable tongue engaging with the vicinity of the mouth is integrally formed in a housing.