JPH0336156Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a key telephone main device.

[Prior art]

Conventionally, in order to connect a predetermined button telephone among a plurality of key telephones to an outside line, or to provide the button telephone with various functions, such as a hook processing function and a hands-free function, the connection between the plurality of button telephones and the outside line has conventionally been established. is equipped with a button telephone main device.

In order to correspond to the number of key telephones and the various functions provided in the key telephone, such a key telephone main device is provided with various units made of printed circuit boards inside thereof. These various units are usually electrically connected to a motherboard consisting of a printed circuit board via connectors.
It is also mechanically fixed with a unit fixing guide.

[Problem that the invention attempts to solve]

By the way, such a conventional key telephone main device is designed so that all of the above-mentioned various units can be accommodated.
A space sufficient to mount all the unit connectors, unit fixing guides, and all the units was provided inside the casing of the key telephone main unit body. However, there are some units that some users do not need, and in this case, a connector, a guide for fixing the unit, and a space are provided inside the casing of the key telephone main unit to store the unnecessary units. As a result, not only did the cost increase accordingly, but the key telephone main unit also became larger.

The present invention has been devised in view of the above points, and it is an object of the present invention to provide a main unit of a button telephone in which the connector, unit fixing guide, and space can be omitted in accordance with the number of units required by the user.

[Means for solving problems]

In order to solve the above problems, the present invention includes a main control unit that performs the main functions of the key telephone main unit, an extension unit that has various functions, and a main control unit and an extension unit that are mounted and electrically connected to each other. A basic chassis having a basic motherboard therein, and one or more extension chassis having therein an expansion unit having various functions and an expansion motherboard on which the expansion unit is placed and electrically connected. The basic motherboard of the basic case and the additional motherboard of the additional case are electrically connected.

[Effect]

Since the key telephone main unit is divided into a basic case and an extension case, units corresponding to the number of units required by the user can be mounted in the basic case, and additional cases can be added as necessary.

〔Example〕

Hereinafter, one embodiment of the key telephone main device according to the present invention will be described in detail based on the drawings.

FIG. 1 is an exploded perspective view showing the basic casing A of the key telephone main unit according to the present invention. In the figure, reference numeral 1 denotes a main control unit provided with a circuit for the key telephone main unit to perform basic operations. Auxiliary units 1b, 1b having, for example, a door phone function are electrically and mechanically connected and fixed to the main control unit 1. Further, on one side of the lower part of the main control unit 1, a connector 1a is provided for connecting the main control unit 1 to a connector 5a of a basic motherboard 5, which will be described below. Next to the main control unit 1, a plurality of (six in this embodiment) extension units 3 are arranged in parallel with the main control unit 1. Each of the expansion units 3 is provided with circuits for performing various functions (for example, a central office line accommodation function, a hands-free function, a voice service function, a conference call function, a toll monitor function, etc.). A connector 3a for connecting the expansion unit 3 to a connector 5b of the basic motherboard 5, which will be described later, is provided on one side of the lower part.

Reference numeral 5 denotes a basic motherboard on which the main control unit 1 and expansion units 3 are mounted using a unit fixing guide 9 described below. The basic motherboard 5 has a connector 5 to which the connectors 1a and 3a of the main control unit 1 and the expansion unit 3 are connected.
a, 5b are provided, and a connector 7 of the power supply 7 is provided.
connector 5d connected to a and guide rail 9
An attachment hole 5e is provided for attaching the foot 9a. Further, the basic motherboard 5 is provided with a connector 5c for electrically connecting the basic motherboard 5 and an additional motherboard 17 described below.

The unit fixing guide 9 has rail-shaped grooves 9 for guiding both sides of the main control unit 1 and expansion unit 3 onto the basic motherboard 5.
A fixing piece 9c for fixing the unit fixing guide 9 is provided at the upper end of each of the unit fixing guides 9.

11 and 13 are a basic housing base and a basic housing cover, respectively. A clamping piece 11a for placing and fixing the basic motherboard 5 is provided below inside the basic housing base 11, and a guide fixing piece 11a for fixing the unit fixing guide 9 is provided above inside the basic housing base 11. The part 11b is the basic housing base 1
A hole 11c is formed on one side of the hole 11c. On the other hand, the basic housing cover 13 covers the basic housing base 1.
1 with screws 13a, 13a. In addition, 1
1d is a connector cover for closing the hole 11c.

Next, how to assemble this basic casing A will be explained. First, connect the connector 5d of the basic motherboard 5 and the power supply 7.
Connect the connector 7a of the unit and attach the legs 9a of the unit fixing guide 9 to the attachment holes 5e of the basic motherboard 5. And the basic housing base 11
Insert and place the basic motherboard 5 into the gap in the center of the holding pieces 11a, insert the power supply 7 into the lower part of the basic motherboard 5, and insert the fixing piece 9c of the unit fixing guide 9 into the guide of the basic housing base 11. It is fixed to the fixed part 11b. Next, the main control unit 1 is inserted into the groove 9b of the unit fixing guide 9.
and both sides of the expansion unit 3, and connect the connector 1 of the main control unit 1 and expansion unit 3.
a, 3a to the connector 5a of the basic motherboard 5,
Connect to 5b. Then, the basic casing A is assembled by fixing the basic casing cover 13 to the basic casing base 11 with screws 13a, 13a. At this time,
The connector 5c of the basic motherboard 5 is located at a position facing the hole 11c of the basic housing base 11. Note that the hole portion 11c is closed by the connector cover 11d.

FIG. 2 is an exploded perspective view showing an additional housing B of the key telephone main unit according to the present invention. In the figure, 3' indicates a plurality of sheets (four in this embodiment),
This is an extension unit similar to the extension unit 3 shown in FIG. On one side of the lower part of the expansion unit 3', there is a connector 1 of the expansion motherboard 17 as described below.
7b (corresponding to the connector 5b of the basic motherboard 5) is provided with a connector 3'a (corresponding to the connector 3a of the expansion unit 3 of the basic chassis A) for connecting the expansion unit 3'.

Reference numeral 17 denotes an extension motherboard on which an extension unit 3' is mounted using a unit fixing guide 19, which will be described below. The expansion motherboard 17 is provided with a connector 17b for connecting the connector 3'a of the expansion unit 3', and is also provided with mounting holes 17e for attaching the legs 19a of the unit fixing guide 19. Further, the expansion motherboard 17 includes a connector 17 for electrically connecting the expansion motherboard 17 and the basic motherboard 5.
d is provided with a connector 17c (corresponding to the connector 5c of the basic motherboard 5) for electrically connecting the expansion motherboard 17 and an expansion motherboard 27 described below.

The unit fixing guide 19 has rail-shaped grooves 19b for guiding both sides of the expansion unit 3' onto the expansion motherboard 17. Fixing piece 19c for fixing the fixing guide 19
is provided.

Reference numerals 21 and 23 are an additional case base and an additional case cover, respectively. A clamping piece 21a for placing and fixing the additional motherboard 17 is provided in the lower part of the interior of the additional housing base 21, and a guide fixing member for fixing the unit fixing guide 19 is provided in the upper part of the interior of the additional housing base 21. The portion 21b has a hole 21c formed on one side surface of the additional housing base 21. In addition, on the back side of the expansion case base 21, there are two
Mounting hole 21 for attaching additional fittings 25
e, 21e are formed. On the other hand, the additional case cover 23 is attached to the additional case base 21 with screws 23a, 23.
It is fixed at a. Note that 21d is a connector cover for closing the hole 21c.

Next, how to assemble this additional housing B will be explained. First, the legs 19a of the unit fixing guide 19 are attached to the attachment holes 17e of the additional motherboard 17. Then, the clamping piece 21a of the additional housing base 21
Insert and place the additional motherboard 17 into the gap in the center of the guide rail 19.
is fixed to the guide fixing part 21b of the additional housing base 21. Next, groove 1 of the unit fixing guide 19
9b, both sides of the extension unit 3' are inserted, and the connector 3'a of the extension unit 3' is connected to the connector 17b of the extension motherboard 17. Then, the additional housing B is assembled by fixing the additional housing cover 23 to the additional housing base 21 with screws 23a, 23a. At this time, add motherboard 1
The connector 17c of No. 7 is located at a position facing the hole 21c of the additional housing base 21. Note that the hole 21c is closed by the connector cover 21d. Note that the two additional metal fittings 25, 25 can be attached to the attachment holes 21e, 21e with screws or the like. As can be seen from FIG. 2, one side of the additional housing B assembled in this manner is open, and the connector 17d of the additional motherboard 17 faces the open side.

FIG. 3 is a diagram showing a connection method for electrically connecting the basic casing A assembled as described above and a plurality of additional casings. In the figure, C is an additional case having a structure similar to that of the additional case B. The connection between the basic chassis A and the expansion chassis B is to connect the connector 5c of the basic motherboard 5 installed in the basic chassis A to the connector 1 of the expansion motherboard 17 installed in the expansion chassis B.
7d from the direction of arrow K (at this time, the connector cover 11d of the basic housing base 11 is removed), and the connection between the expansion housing B and the expansion housing C is made by connecting the expansion housing B and the expansion housing C. The connector 17c of the additional motherboard 17 provided in the case B is connected to the connector 27 of the additional motherboard 27 provided in the additional case C.
d from the direction of arrow L (at this time, the connector cover 21d of the additional housing base 21 is removed). In this way, the required number of additional casings can be attached by engaging the connectors.

FIG. 4 is a diagram showing a connection method for mechanically connecting the basic casing A and the additional casing B. In the same figure, the basic casing A is fixed to the wall 29 on its back side by means of support fittings 33, 33, and the connection between the basic casing A and the additional casing B is made through the mounting hole 21 of the additional casing B.
The two extension fittings 25, 25 attached and fixed to e and 21e with screws 31 are attached to the basic casing A with screws 31.
This is done by attaching and fixing. Connections between expansion case B and other expansion cases are also made in a similar manner.

In this way, the electrical and mechanical connections of the expansion case are
This can be easily done by simply engaging the connector and attaching the additional fittings.

[Effect of idea]

As explained in detail above, according to the key telephone main device according to the present invention, the basic case and the expansion case are divided, and the basic case is equipped with units corresponding to the number of units required by the user. At the same time, since additional casings can be added as necessary, a configuration that meets the user's wishes can be ensured, and this has the excellent effect of omitting connectors, unit fixing guides, and space.

[Brief explanation of the drawing]

Fig. 1 is an assembly diagram for assembling the basic casing A of the key telephone main unit according to the present invention, Fig. 2 is an assembly diagram for assembling the additional casing B for the key telephone main unit according to the present invention, and Fig. 3 is the basic casing. FIG. 4 is a diagram showing a connection method for electrically connecting the main body A and a plurality of additional cases B.
The figure shows a connection method for mechanically connecting the basic casing A and the additional casing B. In the figure, 1...main control unit, 3, 3'...
...Expansion unit, 5...Basic motherboard, A
...Basic chassis, 17...Expansion motherboard, B...
...It is an expansion case.

Claims (1)

[Scope of utility model registration request] A basic casing that has inside thereof a main control unit that performs the main functions of the key telephone main unit, an extension unit that has various functions, and a basic motherboard on which the main control unit and the extension unit are mounted and electrically connected. and one or more expansion casings each having therein an expansion unit having various functions and an expansion motherboard on which the expansion unit is mounted and to which the expansion unit is electrically connected. A key telephone main device characterized by having a configuration in which it is electrically connected to an additional motherboard of a housing.