JP2966581B2 - Telephone outlet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a terminal of a telephone outlet used in a simple telephone exchange system.

[0002]

2. Description of the Related Art FIG. 7 shows a conventional simple telephone exchange system for home use. In the simple telephone switching systems, a public telephone exchange A which is connected to the telephone station E via the external line L ₁ telephone is line, call line to the telephone exchange A via the switching component generator G and protector H is composed of a plurality of telephone outlets B of extension L ₂ and the signal is a transmission line are respectively connected by a control line L ₃ commercial telephone C is detachably connected, the external line L ₁ and the extension L ₂ in the telephone exchange a Alternatively the extension L ₂ between speech path by switching formed to perform the external call and extension call the phone C connected to the telephone outlet B.

[0003] In the simple telephone switching system of the household, and connect the intercom D in call line L ₄ to the telephone exchange A, there as intercom calls also using a telephone C.
Each telephone outlet B is provided with a modular jack M, and a general commercially available telephone C is detachably connected to the modular jack M. The speaker S for reproducing a broadcast signal, such as the telephone outlet B is an extension ringer or intercom call sound transmitted through the control line L ₃
P and light emitting display unit La for displaying a display signal is a voltage signal transmitted through the control line L ₃ to discriminate extension busy or external call secondary, comprising a Lb, these speakers SP and the light-emitting display Notification and display operations are performed by the devices La and Lb. The volume of the speaker SP can be adjusted by a volume control switch VS.

[0004]

[SUMMARY OF THE INVENTION Incidentally, the conventional terminal portion for connecting the extension L ₂ and the control line L ₃ of the telephone outlet B in the simple telephone switching system of this type, become押締Me terminal type shown in FIG. 8 I was As shown in FIG. 9, the pressing terminal includes a terminal screw 55 and a terminal plate 56 to which the terminal screw 55 is screwed. And terminal plate 5
As shown in FIG. 9, reference numeral 6 denotes a screwing piece 56a for screwing the terminal screw 55, and a connecting piece 56b which is raised from one side of the screwing piece 56a and has a press-fitting groove for press-fitting an electric wire at the end.
Consists of As shown in FIG. 8B, the terminal screw 55 has a structure in which a spring washer 57 and a flat washer 58 are integrally attached.

However, with the structure of the terminal portion, there is a problem that the connection work takes a long time, so that the construction time is long, and that the connection state varies among individuals. In order terminal portion for connecting this kind of extension L ₂ or the like which is generally attached to the lower surface side of the body 1 of the telephone outlet B, and when mounting the押締Me terminal, as shown in FIG. 9, the body 1 Has to be turned over, and there is also a problem that the assembling workability is poor.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a telephone outlet which is easy to connect and has good assembling work.

[0007]

According to the present invention, there is provided a printed circuit board on which an internal circuit is mounted to achieve the above object.
For connecting the internal circuit with the extension and the control line.
Modular to which the terminal unit and the telephone are detachably connected
Jack and three modules of standardized ready-made wiring equipment
The printed circuit board, terminals and
A housing for accommodating the modular jack, wherein the terminal comprises a substantially U-shaped terminal plate and a substantially C-shaped locking spring housed in the terminal plate; A quick-connecting structure in which an electric wire inserted from an electric wire insertion hole formed in the elastic plate is elastically sandwiched between a terminal plate and a locking spring to perform connection , and
The printed circuit board is contained in two modules of the housing.
And the above terminal part for the remaining one module.
It is stored .

[0008]

According to the present invention, the terminal section has a quick connection structure as described above, so that the connection operation can be easily performed in a short time only by inserting the extension and the control line into the wire insertion hole of the terminal section. In the quick-connecting terminal portion, the terminal plate and the locking spring can be accommodated from the upper surface side of the body, so that the assembling workability is improved. In addition, even if the terminal part has a quick connection structure
Regardless, connect the terminals to the printed circuit board and modular
That can be stored in the housing together with the
is there.

[0009]

1 to 6 show an embodiment of the present invention. As shown in FIG. 2, the telephone outlet B of this embodiment has a housing including a body 1 having an open front surface and a cover 2 attached to the front surface of the body 1. The fitting claws 21 vertically provided from the four positions described above are fitted into fitting holes 11 formed in the outer peripheral portion of the body 1 to be integrally combined. FIG. 3B shows a structure of a fitting portion between the cover 2 and the body 1.

The external dimensions of the housing composed of the body 1 and the cover 2 are the same as those of a standardized ready-made wiring device.
A pair of locking claws are formed from the outer surface of the cover 2 so as to be able to be mounted on a synthetic resin mounting frame 3 which is formed in a module size of three and is used when this kind of wiring device is embedded in a wall surface. Four sets of 22 are protruded. Therefore, the telephone outlet B can be attached to the mounting frame 3, and the mounting frame 3 can be screwed into the embedding box embedded in the wall surface and embedded in the wall surface. FIG. 1 shows a telephone outlet B mounted on a mounting frame 3. The telephone outlet B can be attached to a metal attachment frame, but the description of this point is omitted.

In the upper part of the body 1 of the telephone outlet B, a storage portion for two modules is provided.
A printed circuit board 4 on which an internal circuit is mounted is mounted on the bottom surface of the unit with fixing screws 41. The printed circuit board 4, the drive to the control line signal discriminating circuit and for discriminating a display signal which is sent come voltage signal through the L _3, amplifies the audio signal superimposed on a voltage signal to drive the speaker SP A circuit, a light emitting display unit La, Lb for displaying a signal such as during an extension call or an outside call, and a volume control switch VS for controlling the volume of the speaker SP are mounted on the output of the signal discrimination circuit. The printed circuit board 4 is disposed so as to close the entire rear part of the speaker SP attached to the cover 2 as described later.

The size of one module at the bottom of the body 1
Corresponds to the portion, attached videos modular jack M connecting a modular plug attached to the tip of the telephone cord telephone C in the center, the terminal plate 51 and a chain constituting a terminal 5 of the fast fine granulation to the right and left The lock spring 52 is housed. Here, as shown in FIG. 6, the boundary between the housing portion 15 and the terminal housing portion 16 of the modular jack M at the lower part of the body 1 is separated by a partition wall, and the terminal housing portion 16 is a place where each terminal 5 is housed. Each is further separated by a partition. In the case of the present embodiment, six terminal storage portions 16 are formed, and the two lowermost left and right terminals are reserved as spares. Here, terminal 5
When using a quick-connecting structure, use the conventional clamping terminal type
The size of the terminal housing 16 becomes larger than that of
Is placed on the part of the body 1 corresponding to the size of two modules.
Accommodates the printed circuit board 4 and one module of the body 1
Terminal housing 16 and module
By providing the storage section 15 for Lajac M,
Terminal 5 is connected to printed circuit board 4 and modular jack M
Together with the body 1 (housing)
You.

The modular jack M has a known structure of a two-core type. This modular jack M is shown in FIG.
As shown in FIG. 6, a contact 61 faces an insertion opening 62 into which a modular plug is inserted, and is connected to the contact 61 and has a distal end protruding from both side surfaces and bent into an L-shaped connection piece 63.
Are provided in a protruding manner, and are connected to the terminal plate 51 of the terminal 5 by a press-fitting groove 64 formed at the tip of the connecting piece 63. In addition, it differs from the conventional one in that a positioning protrusion 65 for restricting a lateral displacement of the lead plate 7 described later is provided from both side surfaces located between the connection pieces 63.

The terminal 5 is also a terminal having a well-known quick-coupling structure, and comprises a U-shaped terminal plate 51 opened on the back side and a substantially C-shaped locking spring 52. It is structured to fit in from the front side. Connect this terminal 5 to body 1
FIG. 3B shows a state in which the terminal is accommodated in the terminal storage section 16. The terminal plate 51 is formed with a connecting piece 53 shown in FIG. 6 by cutting and raising one side piece facing the modular jack M to the side, and the modular jack M is stored in a state where the terminal 5 is housed in the terminal storage portion 16. When stored in the storage unit 15, the modular jack M
The connection piece 53 is press-fitted into the press-fitting groove 64 formed in the connection piece 63, and the connection between the terminal 5 corresponding to the modular jack M and the modular jack M is performed.

The lead plate 7 is formed of a conductive material.
As shown in FIG. 2, a pair of connecting pieces 71 are provided so as to protrude from both sides of the rear end face, and a press-fit groove 72 is formed in each central portion, and each connecting piece 71 is formed according to a member to be connected. The shape is slightly different. The connecting pieces 71 formed on the upper side of the lead plate 7 has become the same structure as the connecting piece 63 of the modular jack M described above, connecting the control line L ₃ are formed in the terminal plate 51 of the terminal 5 to be connected The piece 53 is press-fitted and connected to the terminal 5.

Between the printed board 4 of the body 1 and the modular jack M, there is formed a connecting portion 12 for connecting the lead plate 7 and a lead wire 42 drawn out of the printed board 4. The connecting portion 12 has a cross-shaped groove formed on the upper surface, and as shown in FIG.
Is inserted, and the connection piece 71 of the lead plate 7 is inserted into the vertical groove. Here, the lead wire 42 is first placed in the horizontal groove, and then the lead plate 7 is placed in the vertical groove simultaneously with press-fitting of the terminal 5 with the connecting piece 53.
When the lead wire 42 is inserted, the lead wire 42 cuts into the press-fit groove 72 of the other connection piece 71 of the lead plate 7, so that the lead wire 4
2 and the lead plate 7 are connected. This lead wire 42
FIG. 3A shows a connection state between the lead wire 7 and the lead plate 7.

As shown in FIG. 1C, a plurality of slits 13 are formed in a portion of the body 1 corresponding to the storage portion of the printed circuit board 4. Here, this slit 1
Numeral 3 is provided together with the plurality of holes 43 formed in the printed circuit board 4 shown in FIG. 2 to increase the volume of the speaker SP. That is, the slit 13 and the hole 43
Is formed, and the rear part of the diaphragm of the speaker SP is opened, so as not to hinder the vibration of the diaphragm as in the case where the rear part is closed, and the diaphragm is easily vibrated. , The volume is increased accordingly.

In a portion located in the terminal storage portion 16 in which the terminals 5 are stored, two wire insertion holes 14 are provided for each terminal 5.
Is formed. In other words, when the core wire is removed from the wire insertion hole 14 by removing the coating of the wires serving as the extension line L ₂ and the control line L ₃ , the core wire is elastically held between the inner side surface of the terminal plate 51 and the locking spring 52. The connection of the electric wire is performed. In addition,
In the case of the present embodiment, the terminal 5 is not provided with a release button operated when disconnecting the electric wire, but it goes without saying that a release button may be provided. Note that two lock springs 52 are housed in the terminal plate 51, and each of the two electric wire insertion holes 4 is formed corresponding to the position of each lock spring 52. As a result, two electric wires can be connected to one terminal 5, and a structure in which feed wiring can be easily performed is provided.

Next, the structure of the cover 2 will be described. As shown in FIG. 2, a speaker SP is attached to the cover 2, and the speaker SP and the printed board 4 are connected by a lead wire 44, and the printed board 4 and the lead wire 44 are connected by a connector 45. It has been used. An opening 23 for inserting the modular plug shown in FIG. 1A is formed in the lower portion of the cover 2. When the modular plug is not attached to the modular jack M, the opening 2 is formed.
A door 24 for closing the door 3 is slidably mounted in a vertical direction. In order to make the door 24 freely openable and closable up and down, as shown in FIG. 2, rails 25 running vertically are formed on the back surface on both sides of the opening 23, and the door 24 is provided between the rails 25. It is attached. The door 24 is provided with an operation piece 24a for performing an opening / closing operation.

On the back surface on both sides of the opening 23, a cover 2
3 is attached to the body 1, a convex rib 26 for pressing the front end face of the lead plate 7 is protruded, and a convex rib 27 for pressing the front surface of the terminal plate 51 is further protruded outside the protruded rib 26, as shown in FIG.
As shown in (b), the positioning of the lead plate 7 and the terminal plate 51 in the front-rear direction is performed. An operation handle 46 attached to the volume control switch VS is provided on the cover 2.
Are formed, a slit 29 for transmitting the sound of the speaker SP forward, and a through-hole 30 for exposing the light emitting displays La and Lb.

[0021]

According to the present invention, the internal circuit is mounted as described above.
Printed circuit board and the extension and control of the internal circuit
Terminal for connecting to the wire, and the phone can be detached
Modular jack to be connected and standardized ready-made
The above-mentioned print is formed in the size of three modules of wire equipment
Housing for storing board, terminals and modular jack
The terminal portion is provided with a substantially U-shaped terminal plate and a substantially C-shaped locking spring housed in the terminal plate, and is inserted through a wire insertion hole formed in the terminal portion. The wire is elastically clamped between the terminal plate and the locking spring to form a quick-connecting structure, and is divided into two modules of the housing.
While storing the above printed circuit board,
Since the terminal part is housed in the terminal part, the connection work can be easily performed in a short time simply by inserting the extension and the control line into the wire insertion hole of the terminal part, and there is no individual difference in the connection state. There are advantages. In addition, with the quick-connecting terminal portion, the terminal plate and the locking spring can be accommodated from the upper surface side of the body, and there is an advantage that the assembling workability is improved. In addition, the terminal
Despite the quick connection structure,
Board and modular jack in housing
There is an advantage that it can be stored.

[Brief description of the drawings]

FIGS. 1A to 1C are a front view, a side view, and a rear view showing a state of attachment to a mounting frame according to an embodiment of the present invention.

FIG. 2 is a plan view showing a state where a cover is removed from a body.

FIGS. 3A and 3B show A ₁ -A in FIG.
FIG. _{6 is a} sectional view taken along line _{6 and a} sectional view taken along line B ₁ -B ₄ .

FIGS. 4A and 4B are a plan view and a side view of a lead plate.

FIGS. 5A and 5B are a plan view and a side view of a modular jack.

FIG. 6 is an explanatory diagram showing a method of storing terminals.

FIG. 7 is a system configuration diagram of a simplified telephone exchange system.

8 (a) and 8 (b) are a plan view and a sectional view showing a terminal structure of a conventional telephone outlet.

FIG. 9 is an explanatory view of a conventional terminal mounting method.

[Explanation of symbols]

A switch B telephone outlet C phone L ₁ outside line L ₂ extension L ₃ control lines 5 the terminal 14 wire insertion hole 51 terminal plate 52 locking spring

Claims (1)

(57) [Claims] 1. A telephone exchange to which an external line which is a public telephone line is connected, and a commercially available telephone which is connected to the telephone exchange by an extension which is a communication line and a control line which is a signal transmission line, and is detachably connected. and a plurality of telephone outlets, a telephone outlet of a simple telephone switching system to perform the external call and internal call to an outside line and extension or speech path extension between in the telephone exchange in the telephone and switching formed, inside
The printed circuit board on which the circuit is mounted and the internal circuit
The terminal for connecting to the line and the control line, and the telephone
Modular jacks that are detachably connected
Three ready-made wiring devices are formed in module dimensions
Contains printed circuit board, terminals and modular jack
And a housing which, on the Symbol pin portion, a substantially U-shaped terminal plate consists of a substantially C-shaped locking spring housed in the terminal in the plate, wire insertion formed in the terminal portion The electric wire inserted through the hole is elastically sandwiched between the terminal plate and the locking spring to form a quick connection structure , and the two modules of the housing are provided.
The printed circuit board is stored in
A telephone outlet characterized in that the terminal portion is accommodated in individual modules .