JP3144252B2 - Modular jack fixing structure for telephone - Google Patents

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jack fixing structure in which a modular plug connected to one end of a telephone cord or the like is inserted and withdrawn.

[0002]

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

FIGS. 4 and 5 show a conventional modular jack fixing structure of a telephone, which will be described with reference to FIG. 25 is a modular plug provided with an elastic engaging rod 26, and one end of a string 27 is electrically connected. 3
Numeral 0 denotes a lower housing constituting 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, three elastic engaging pieces 32 each having a claw 33 formed at the tip, and on both sides of the remaining one edge of the opening edge,
A pair of ribs 34 are respectively provided upright inside the lower housing 30. Four mounting pieces 35 for mounting the modular plug 25 are provided at the four corners of the plug insertion port 31.
Are protruded into the plug insertion port 31. Reference numeral 37 denotes a modular jack having a plug insertion port 38 into which the modular plug 25 is inserted and withdrawn.

Conventionally known terminal wires are provided on each of the inner surface of the plug insertion opening 38 of the modular jack 37 and the outer surface of the modular plug 25, and a modular plug is inserted into the plug insertion opening 38 of the modular jack 38. 25
Is inserted, these terminal wires come into contact 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 mounted on the mounting piece 35, and the upper surface is formed by the claw portion of the elastic engaging piece 32. 33 and one side is rib 3
By engaging with the plug 4, the plug insertion port 38 faces the plug insertion port 31 and is fixed to the housing 37. When removing the modular jack 37 from the housing,
This is performed by elastically deforming the elastic engagement pieces 32 outward. Since the elasticity of the elastic engagement piece 32 is utilized in this manner, attachment and detachment is easy.

[0005]

However, in the conventional modular jack fixing structure described above, the mounting / removing direction B of the modular jack 37 into the plug insertion port 31 and the insertion of the modular plug 25 into the plug insertion port 31 are described. Since the direction B matches, when the modular jack 25 is inserted, the modular jack 37 is
If you lose the connection or the load at the time of insertion is large,
There is a problem that the elastic engagement piece 32 is damaged.

SUMMARY OF THE INVENTION Accordingly, 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 can be easily attached and detached and firmly attached. It is in.

[0007]

In order to achieve this object, a modular jack fixing structure for a telephone according to the present invention is provided with a plug insertion hole for inserting a modular plug in a housing, and grooves on both side surfaces. Insert the concave modular jack,
In a telephone fixed inside the housing so as to face the plug insertion port, inside the housing at the opening edge of the plug insertion port,
A U-shaped mounting portion that is open in one side along the housing surface and in the direction in which the modular plug is inserted is erected integrally with the housing, and the modular jack is provided on both inner surfaces of the mounting portion. A projecting ridge engaging with the groove is projected, and a tip forms one side of an opening edge of the plug insertion port, and an elastically deformable tongue piece engaged near a lower end of the modular jack is integrated with the housing. It is formed in.

[0008]

According to the present invention, the modular jack is attached and detached.
This is performed by elastic deformation of the tongue, and the modular jack is held in the mounting portion by engagement of the groove of the modular jack with the ridge of the mounting portion, so that when the modular plug is inserted, a load is applied to the tongue side. No.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 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 FIG. FIG. 2 is a plan view, a side view, and a bottom view of a telephone employing the modular jack fixing structure of FIG. In these figures,
The housing of the telephone indicated by reference numeral 1 is composed of an upper housing 2 and a lower housing 3, both of which are made of synthetic resin, and these two housings 2, 3 are attached to each other by screws. 4 is the upper housing 2
A concave fitting part for placing a handset, one pair of which is recessed on the surface of
Reference numeral 5 denotes a hook button provided in the upper concave fitting portion 4, reference numeral 6 denotes a dial button, and reference numeral 7 denotes a well-known function button.

The bottom surface of the lower housing 3 is formed in a substantially inverted shape in a side view, and a flat fitting portion 11 is provided at the center. Reference numeral 12 denotes a plug insertion hole formed substantially at the center of the concave fitting portion 11, reference numeral 18 denotes a tongue piece described later formed adjacent to the plug insertion hole 12, reference numeral 13 denotes a handset telephone cord, and reference numeral 14 denotes the lower housing 3. A modular jack (not shown) that is attached to a printed circuit board inside and is connected to one end of the telephone cord 13.

On 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 erected inside the housing, and the mounting wall 15 has a direction A perpendicular to the direction B in which the modular plug 25 is inserted into the plug insertion port 12, ie, An opening 16 through which a modular jack 20 described later is inserted into the mounting wall 15 along the inner surface of the concave fitting portion 11.
Are provided, and a pair of guide ridges 17 are provided so as to protrude from upper portions of both inner side surfaces of the mounting wall 15. The tongue piece 18 is formed in a thin shape, and cut grooves 19 are provided on both sides so that the distal end portion 18a can be elastically deformed in the B direction.
The base part is formed integrally with the concave fitting part 11 so as to extend so as to form a side.

The modular jack 20 is provided with a plug insertion opening 21 having a convex cross section into which a modular plug 25 is inserted, and a groove 22 engaging with the guide ridge 17 is formed on both side surfaces. On the bottom surface, a step-shaped engaging projection 23 is provided to project downward.

With such a configuration, the modular jack 20 is moved in the direction A, the groove 22 is engaged with the guide ridge 17, and the lower end face of the engaging projection 23 of the modular jack 20 is used. While pressing down the tongue piece 18 downward to elastically deform, the modular jack 20 is opened.
6 into the mounting wall 15. Modular jack 20
Is completely inserted into the mounting wall 15, the plug insertion port 21 faces the plug insertion port 16, the engaging projection 23 fits into the plug insertion port 16, and the tongue piece 18 of the engagement projection 23 Since the pressing of the tongue piece 18 is released, the tongue piece 18 elastically returns. Since the rear end face of the engaging projection 23 engages with the distal end portion 18a of the tongue piece 18 that has been elastically restored, the movement of the modular jack 20 in the direction opposite to the direction A is restricted, and the modular jack 20 is prevented from coming off the mounting wall 15. I 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 insertion direction B of the modular plug 25 and the guide wall 17 are engaged. So modular plug 2
The load on modular jack 20 when plugging in 5 is
Since the modular jack 20 is held by the rigid groove 22 and the guide ridge 17, 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, breakage of the tongue piece 18 can be prevented.
When the modular jack 20 is detached from the mounting wall 15, the tongue piece 18 can be elastically deformed in the direction opposite to the direction B, so that the detachment is easy.

In this embodiment, the modular jack 2
At the lower end of 0, the tongue piece 18 is pressed downward, and a step-like engaging projection 23 that engages with the distal end 18a is provided. However, various shapes of the engaging projection 23 are conceivable. A projecting strip extending in the front-rear direction of the modular jack 20 may be used. Also, when the modular jack 20 is inserted into the mounting wall 17 at the lower end of the modular jack 20 without particularly providing the engaging projection 23,
It goes without saying that a portion that engages with the tip of the tongue piece 18 when the tongue piece 18 is pressed and fitted into the plug insertion port 12 may be formed.

[0016]

As described above, according to the present invention, a modular jack in which a plug insertion hole for inserting a modular plug is formed in a housing and grooves are formed on both sides is provided. In a telephone fixed inside the housing so as to face the front side, a U-shape in a plan view in which one side direction along the housing surface and the direction in which the modular plug is inserted is opened inside the housing at the opening edge of the plug insertion opening. A mounting portion is formed integrally with the housing, and a ridge is formed on both inner surfaces of the mounting portion so as to engage with the groove of the modular jack. And the elastically deformable tongue that engages with the lower end of the modular jack is formed integrally with the housing, so that the modular jack mounted in the mounting portion is orthogonal to the direction of inserting the modular plug. Rigidity formed in the direction Since the modular jack is held by the engagement between the groove and the ridge, the modular jack does not come off when the modular plug is inserted, and no load is applied to the tongue to prevent breakage. Can be. Furthermore, since attachment and detachment can be performed only by elastically deforming the tongue piece, it can be easily performed.

[Brief description of the drawings]

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

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

3A and 3B show a telephone employing the modular jack fixing structure of the telephone according to the present invention, wherein 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 modular jack fixing structure of a conventional telephone.

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

[Explanation of symbols]

12: plug insertion port, 15: mounting wall, 16: opening, 1
7: Guide ridge, 18: Tongue piece, 20: Modular jack, 21: Plug insertion port, 22: Groove, 23: Engagement projection,
25 ... Modular plug.

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04M 1/00 H04M 1/02-1/23 H04M 1/24 H04M 1/58-1/62 H04M 1/66-1 / 78

Claims (1)

(57) [Claims] 1. A telephone having a modular jack having a plug insertion hole into which a modular plug is inserted and formed with a groove on both sides, and a modular jack fixed inside the housing so as to face the plug insertion hole. In the inside of the housing at the opening edge of the plug insertion port, a U-shaped mounting portion opened in one direction along the housing surface and the direction in which the modular plug is inserted is integrally formed with the housing. while set, projecting the ridge engages the groove of the modular jack on both inner side surfaces of the mounting portion, and the tip forms one side of the opening edge of the plug insertion opening, the lower end portion of the modular jack A modular jack fixing structure for a telephone, wherein an elastically deformable tongue that engages with the housing is formed integrally with the housing.