JPH05284546A - Telephone exchange device - Google Patents

Abstract

PURPOSE:To provide the telephone exchange device where extension and outside line extended units are attached to the outside of the cabinet of an exchange main body and the inside of the exchange main body can be inspected and repaired without detaching the extended units. CONSTITUTION:A signal line passing hole 4 and enclosure attaching parts 3 of an extended unit 7 are arranged on a front cabinet 1, and the front cabinet 1 is turned and opened with a shaft 5 as the center with the extended unit 7 on. Thus, the exchange internal substrate is not damaged when the extended unit is installed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone exchange device having a unit for expanding the number of internal / external lines.

[0002]

2. Description of the Related Art In a conventional telephone exchange device, a line expansion unit is installed in a cabinet of an exchange main body.

The above conventional telephone exchange device will be described below with reference to the drawings. FIG. 4 shows an example of a structure for attaching a line expansion unit to a conventional telephone exchange device. In FIG. 4, 1 is the front cabinet of the exchange,
Reference numeral 2 is a rear cabinet, 3 is an expansion unit mounting portion, 7 is an expansion unit, 9 is a signal line connecting connector, 11 is a mounting screw, and 12 is an exchange installation wall surface.

With respect to the telephone exchange device composed of the above-mentioned components, the relation and operation of each component will be described.

In a wall-mounted small-sized telephone switchboard as shown in FIG. 4, the line expansion unit 7 often has the front cabinet 1 of the switchboard removed and fixed inside with screws. Opening the cabinet of the exchange unit when installing the extension unit may damage the mounting board inside or the components on the board, and the extension unit must also be removed when inspecting or repairing the board of the exchange unit. However, it has a poor serviceability structure.

[0006]

As described above, in the structure of the conventional example, the cabinet of the exchange must be opened when the expansion unit is mounted, so that the internal board or parts on the board may be damaged, and There is a service problem in that the expansion unit must be removed when inspecting and repairing the switch body substrate.

The present invention solves the above-mentioned problems of the prior art. When mounting the extension unit on the telephone exchange, it is not necessary to remove the cabinet, and the inside of the exchange main body can be inspected without removing the extension unit. It is intended to provide a telephone exchange device that can be repaired.

[0008]

In order to achieve the above object, the telephone exchange apparatus of the present invention is provided with an extension unit mounting portion and a signal line passage hole in the front cabinet, and one is provided for mounting the front and rear cabinets. The shaft is provided with a bearing on the other side.

[0009]

With this configuration, the expansion unit can be mounted outside the housing of the exchange, and the front cabinet can be opened with the expansion unit attached when inspecting or repairing the inside of the exchange.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of a telephone exchange apparatus and a line extension unit according to an embodiment of the present invention, and FIG. 2 is a view of an example of a structure for attaching the extension unit to the exchange seen from the back side of the front cabinet. FIG. 3 shows an example of the operation of opening the front cabinet about the rotation axis and the rotation axis and the bearing.

In FIG. 1, 1 is a front cabinet of the exchange, 2 is a rear cabinet, 3 is an extension unit mounting portion,
Reference numeral 4 is a signal line passage hole, 5 is a front cabinet rotating shaft, 6 is a bearing, and 7 is an expansion unit.

With respect to the telephone exchange composed of the above-mentioned components, the relationship and operation of each component will be described. After connecting the signal line cable 8 of the expansion unit 7 to the connector 9 of the exchange, the housing of the expansion unit 7 is attached to the front cabinet 1. If the appearance of the front cabinet of the exchange before installation of the expansion unit is impaired, it may be possible to attach the cover 13.

As shown in FIG. 2, the expansion unit 7 may be fixed by screws other than an example in which the projection is hooked on the projection of the front cabinet.

As described above, according to this embodiment, as shown in FIG. 3, the front cabinet of the exchange opens around the rotary shaft 5 with the expansion unit 7 installed, so that the inside of the exchange is inspected and repaired. Sometimes it is not necessary to remove the expansion unit 7. (FIG. 3B is an enlarged view of the rotary shaft 5 and the bearing 6.)

[0016]

As is apparent from the above embodiments, according to the telephone exchange apparatus of the present invention, the expansion unit is attached to the outside of the front cabinet of the telephone exchange apparatus, and the front cabinet and the rear cabinet can be fitted with the shaft and the bearing. Since the structure is attached, there is almost no possibility of damaging the switch internal board when installing the expansion unit, and it is not necessary to remove the expansion unit when inspecting or repairing the inside of the switch. This is particularly effective in the case of an exchange having a plurality of expansion units.

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration of a telephone exchange according to an embodiment of the present invention.

FIG. 2 is a perspective view showing details of an example of a structure for attaching an expansion unit to the apparatus.

FIG. 3 is a perspective view showing the concept of the opening / closing structure of the front cabinet after the expansion unit is installed in the apparatus.

FIG. 4 is a perspective view showing the concept of installing an extension unit in a conventional small telephone exchange.

[Explanation of symbols]

 1 Telephone exchange equipment front cabinet 2 Rear equipment cabinet 3 Expansion unit mounting portion 4 Signal line passage hole 5 Cabinet fitting shaft 6 Bearing

Claims (1)

[Claims] 1. A shaft and a bearing, each of which is provided with a front cabinet and a rear cabinet each having an extension / internal line number expansion unit mounting portion and a signal line passage hole, are fitted to each other, and the front cabinet is centered on the shaft. A freely rotatable telephone exchange device.