JPH0310618Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement in the assembly structure of a modular jack in a telephone set.

[Conventional technology]

In modern telephones, the machine string or handset cord is connected by means of a modular jack-modular plug, the basic structure of which is disclosed, for example, in Japanese Patent Publication No. 44-3523 "Telephone". The modular jack has a block shape as a whole, and is assembled into an assembly portion provided on the inner surface of the casing so that the opening into which the modular jack fits matches the opening provided in the casing.

In the past, various assembly structures for modular jacks have been proposed. For example, there is a structure in which a notch is provided at the upper edge of the upper case or lower case, and the jack fitted in this is held between both cases, and a structure in which a pair of jacks is installed from the inside of the case. There is a structure in which an elastic engagement protrusion is provided to protrude and hold.

[Problem that the invention attempts to solve]

The former structure has the simplest case shape, but it is not practical because a part of the jack is exposed from the surface of the case, spoiling the appearance, and the latter structure allows the jack to be assembled with a single touch. However, there were problems such as damage to the engaging protrusion, a need for a jack with an engaging portion, and depending on the location where the assembly portion is provided, slide die cutting must be performed during molding.

[Means for solving problems]

In view of these circumstances, the present invention has been devised as a set consisting of a pair of L-shaped engagement pieces whose tips engage with assembly grooves provided on both sides of the modular jack, and a stopper protruding from the sides of the engagement pieces. An attachment part was provided on the lower case, and a holding piece having an inclined cam surface on a side edge was provided on the upper case in correspondence with the assembly part.

[Effect]

Therefore, the module jack is pushed in from the side of the assembly part until the tip of the engaging piece engages with the assembly groove and engages with the stopper, and when the upper case and lower case are assembled, the module jack is pushed in by the retaining piece. It is firmly fixed by being pressed against the stopper side.

〔Example〕

Hereinafter, the present invention will be explained in detail with reference to embodiments shown in the drawings.

The telephone according to the embodiment includes a handset 10, an upper case 20, and a lower case 30. Atsupa case 20 has push button dial 2
1. Various members and mechanisms such as a control panel 22 for hold/shorten or station line switching, a hook button 23, etc. are incorporated. A lower case 30 combined with the upper case 20 has a printed circuit board 31 mounted thereon with a communication circuit IC, etc., and two modular jacks 40, 41 installed therein. A modular jack 40 is connected to a modular plug 16 provided at the tip of a machine string 15, and a well-known elastic engagement piece 33 is integrally erected from the case bottom wall 32.
It is fixed in the plug. Modular jacket 41
is connected to a modular plug 12 provided at the end of a handset cord 11 that connects to the handset 10, and is assembled on an assembly portion 50, which is the gist of the present application. The machine cord 15 and the handset cord 11 are both connected to each module jack 40, 41 from the bottom side of the lower case 30.

Next, details of the assembly section will be explained with reference to FIGS. 1 and 3.

The modular jack 41 has a convex fitting opening on its lower surface into which the modular plug 12 is fitted, and a horizontal assembly groove 42 is provided on both sides in the width direction at approximately the center in the height direction. lead wire 43
A stepped portion 44 is provided on the drawer side. The assembly portion 50 is formed around the plug insertion hole 34 provided in the bottom wall 32 of the lower case 30, and is composed of a vertical wall 51 surrounding the entire circumference of the insertion hole, a pair of engagement pieces 53, and a stopper 55. There is. The engagement piece 53 is a notch 52 provided at the center of the side wall in the width direction of the vertical wall 51.
The engaging portions 54 are provided at the ends thereof and are bent in the horizontal direction so as to face each other. The distance between the surface of the vertical wall 51 and the engaging portion 54 is approximately equal to the height dimension from the lower surface of the modular jack 41 to the assembly groove 42. The stoppers 55 are provided on both sides of the longitudinal side walls of the vertical wall 51 to protrude from the upper surface of the vertical wall. These stoppers 55
The opposing interval is approximately equal to the width dimension of the convex portion 45 formed by the stepped portion 44 of the modular jack 41. A channel-shaped protrusion 56 is connected to a longitudinal side wall portion of the vertical wall 51 opposite to the stopper 55 to the side of the case. This protrusion 56
Accordingly, a cord storage groove 35 is formed on the lower surface of the bottom wall 32 of the case 30, and one end of this storage groove 35 communicates with the plug insertion hole 34. On the other hand, a pair of holding pieces 25 are integrally provided on the inner surface of the upper case 20 so as to correspond to the assembly portion 50 . That is, the holding piece 25 is attached to the Atsupa case 2.
0 and the lower case 30 are combined,
Its tip extends to the side end of the assembly portion 50, that is, the side of the vertical wall on the side of the channel-like protrusion 56, and the side edge facing the stopper 55 has a slope whose width gradually decreases toward the tip. A cam surface 26 is formed.

In the above configuration, the module jack 41 is pushed in from the side of the assembly part 50 as shown by arrow A in FIG. It can be done. Then, the module jack 41 slides on the top surface of the standing wall 51,
The stepped portion 44 is pushed in until it abuts against the stopper 55, and in this state, the fitting opening communicates with and fits into the jack insertion opening 34. After that, Atsupa case 2
0 and the lower case 30 are combined, the retaining piece 25 of the upper case abuts against the side surface of the module jack 41, so that the jack is held firmly in the sliding direction by the stopper 55 and the retaining piece 25. It is retained. Note that even if the module jack 41 is not completely pushed in to the stopper 55 position, by combining the upper case 20 and the lower case 30, the jack can be pushed against the stopper by the inclined cam surface 26 of the holding piece 25. It will be pushed in until it fits. In other words, the inclined cam surface 26 abuts against the side surface of the modular jack 41 and presses the jack toward the stopper 55, whereby the jack is held by the holding piece 25 and the stopper 55. Of course, the module jack 41 has its assembly groove 42 and engagement piece 53.
is held in the upward direction by engagement with the engaging portion 54 .

In the above embodiment, the vertical wall 51 was provided to serve as a receiving part for the modular jack 41, but it goes without saying that the modular jack 41 may be directly supported by the bottom wall 32 of the lower case 30.

[Effect of idea]

As explained in detail above, according to the present invention, a module jack that does not have an engaging part for mounting can be fastened to an assembly part of a structure that does not require slide die cutting using an extremely simple method. The practical effect is extremely large.

[Scope of Claim for Utility Model Registration] In a telephone that has an opening for inserting a modular plug in the bottom wall of a lower case that is combined with the Atsupa case to form a housing, and also has a modular jack assembly part on the inner surface of the bottom wall corresponding to this opening. The modular jack consists of a pair of L-shaped engagement pieces whose tips engage with the assembly grooves provided on both sides of the jack, and a stopper provided on the side of the engagement pieces to restrict the insertion end of the jack. At the same time, the retaining piece has an inclined cam surface that protrudes from the inner surface of the upper case and engages with the side edge of the jack to press it toward the stopper when assembled with the lower case. A modular jack assembly structure for a telephone that is characterized by being able to hold the phone.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of the main parts of a telephone equipped with a modular jack assembly structure according to the present invention, FIG. 2 is an exploded perspective view of the entire telephone, and FIG. 3 is a vertical sectional view of the main parts. 11... Transmitter cord, 12... Modular plug, 20... Atsupa case, 25... Holding piece, 2
6... Inclined cam surface, 30... Lower case, 32...
...Bottom wall, 34...Plug insertion port, 40, 41...
Modular jack, 42...assembly groove, 44...step part, 50...assembly part, 51...standing wall, 53...engaging piece, 54...engaging part, 55...stopper.