JP2801416B2 - Manufacturing method of intercom slave unit exterior casing - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a resin-made intercom slave unit exterior casing, and more particularly to an improvement in a method for manufacturing a button hole.

[0002]

2. Description of the Related Art As shown in FIG. 5, an intercom slave unit exterior housing 80 has a button hole 20 in which a button 10 for calling a base unit (not shown) is installed, and a button 10 as shown in FIG. And a microphone hole 60 for transmitting and passing a sound that is called and responding to the sound emitted from the speaker 30, and a microphone hole 60 for communicating with the sound that is emitted and transmitting and passing the sound input to the microphone 50. In manufacturing such an intercom slave unit outer casing 80, the button hole 20
In the case of a large hole, in order to prevent the occurrence of a weld line appearing at the time of molding, conventionally, only the small speaker hole 40 and the microphone hole 50 are drilled at the time of molding, and the large button hole 20 is formed after molding. Press punching was performed using a "" -shaped press punching die.

[0003]

By the way, in the above-mentioned conventional method for manufacturing the exterior case of the intercom slave unit, the press punching step using the "U" -shaped punching die includes the button hole 2
When a large hole such as 0 is drilled, a large load is applied to the resin panel 70 constituting the intercom slave unit outer casing 80 during press-cutting, and the periphery of the pressed-out button hole 20 is deformed and whitened. There were difficulties in the finish.

Further, if the button hole 20 is formed by molding without press blanking, a weld line is formed in the housing, which causes problems in strength and appearance.

[0005]

The present invention has been made to solve the above-mentioned drawbacks, and aims to reduce the load on the panel when the resin intercom slave unit outer casing is pressed out, and is excellent in strength and appearance. It is an object of the present invention to provide a method of manufacturing an intercom slave unit outer casing.

[0006]

In order to achieve this object, a method for manufacturing an outer case of an intercom slave unit according to the present invention comprises:
A button hole in which a button for calling the base unit is provided, a speaker hole for transmitting and passing a sound emitted from the base unit called through the button through a speaker, and a voice input from the base unit to the microphone. In manufacturing an intercom sub unit exterior housing having a resin panel having a microphone hole for transmitting and transmitting a sound to be transmitted, a speaker panel, a microphone hole, and a plurality of through-grooves around a button hole are formed of a resin panel. Then, the resin portion surrounded by a line connecting the ends of the plurality of grooves on the periphery of the button hole is pressed out.

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings. As shown in FIG. 1, an intercom slave unit exterior housing 8 according to the present invention has a button hole 2 in which a button 1 for calling a base unit (not shown) is provided and a button hole 2 for calling the parent unit (not shown), as in the related art. A speaker hole 4 for transmitting and passing the sound of the base unit that responds and is emitted from the speaker 3; and a microphone hole 6 for transmitting and passing the sound of the slave unit input to the microphone 5 by interacting with the sound of the base unit. And a resin panel 7 having:

[0008] In manufacturing the resin-made intercom slave unit exterior case 8, small holes such as the speaker hole 4 and the microphone hole 5 are formed at the time of molding. In addition, as shown in FIG. 3, a large hole such as the button hole 2 is formed as a plurality of grooves 9 as shown in FIG.
1, 92 are drilled at the time of molding. Next, as shown in FIG. 2, straight lines 71 and 7 connecting the ends of the pair of grooves 91 and 92 are formed.
The resin portion 70 surrounded by 2 is press-cut with a “〓” -shaped press-cutting die to form a large button hole 2.

In the above embodiment, the square hole type button hole 2 has been described, but the shape of the hole 2 is not limited to the square hole type.
The shape and number of the grooves 9 are not limited to those in the embodiment, and a plurality of spaced grooves 9 are first formed on the resin panel 7 corresponding to the outer periphery of the button hole 2 by molding. ,
When the resin portion 70 connecting the ends of the groove 9 is punched out and a large hole is drilled in the resin-made intercom slave unit exterior housing 8, the groove 9 can reduce the load applied to the resin panel 7 during the press-out. Any shape and number are suitable.

[0010]

As is apparent from the above embodiments, in the method of manufacturing an outer case of an intercom slave unit according to the present invention, a button hole in which a button for calling a master unit is provided, and a master unit called by the button are provided. Interphone sub unit outer casing of a resin panel having a speaker hole for transmitting and passing sound emitted from the speaker through the speaker, and a microphone hole for transmitting and passing sound input to the microphone by interacting with the sound from the master unit. In manufacturing the body, a speaker hole, a microphone hole, and a plurality of grooves on the periphery of the button hole are formed on a resin panel, and then a line connecting the ends of the plurality of grooves on the periphery of the button hole. Since the enclosed resin part is press-released, the load on the panel during press-release of the resin intercom slave unit outer casing is reduced, and there is no deformation or whitening around the button hole, and a weld line that appears during molding. Without strength even in appearance even better interphone handset exterior housing is obtained.

[Brief description of the drawings]

FIG. 1 is a front view for explaining an intercom slave unit exterior case manufactured by a method of manufacturing an intercom slave unit outer case according to the present invention.

FIG. 2 is a front view illustrating a state in which a plurality of grooves are formed by a method of manufacturing an intercom slave unit exterior housing according to the present invention.

FIG. 3 is a front view for explaining holes to be formed by a method of manufacturing an intercom slave unit outer casing according to the present invention.

FIG. 4 is a front view illustrating holes formed by a conventional manufacturing method.

FIG. 5 is a front view illustrating a hole to be pressed by a conventional manufacturing method.

[Explanation of symbols]

 1. Button 2. Button hole 3. Speaker 4. Speaker hole 5. Microphone 6. Microphone hole 7 Resin panel 8. Intercom slave unit outer casing 9 (91, 92) .... groove 70 ........ resin parts 71, 72 ........ straight line

Claims (1)

(57) [Claims] 1. A button hole (2) provided with a button (1) for calling a master unit, and a sound emitted from the master unit side called by the button through a speaker (3) is transmitted and passed. An intercom slave unit outer casing of a resin panel (7) having a speaker hole (4) and a microphone hole (6) for transmitting and passing sound input to the microphone (5) by interacting with sound from the master unit. In manufacturing the body (8), the speaker hole, the microphone hole, and a plurality of through grooves (91, 92) on the periphery of the button hole are formed in the resin panel, and then the button hole periphery is formed. A method of manufacturing an exterior housing for an intercom slave unit, wherein a resin portion (70) surrounded by lines (71, 72) connecting ends of a plurality of upper grooves is pressed.