JPH084763Y2 - Button telephone - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION -Industrial field- The present invention relates to a button telephone structure, and more particularly to a button telephone structure in which a liquid crystal display can be assembled as required.

-Prior art-As is well known, in key telephones used in business establishments, etc., a liquid crystal display is required to be incorporated in order to display data such as the current time, dialed number, communication time, and call charge. There is a case.

In such a case, conventionally, a telephone case used for a button telephone equipped with a liquid crystal display and a telephone case for a button telephone not using the liquid crystal display are separately prepared, and a telephone for each application is manufactured in the manufacturing process of the telephone. They are made differently.

-Problems to be solved by the invention-However, in the case of such a telephone structure, in the case where it is later requested to equip the liquid crystal display device after the installation of the key telephone, it is necessary to respond to this request. In addition to the need to replace the entire button telephone, it is necessary to individually manufacture a die for an expensive telephone case depending on the presence or absence of a liquid crystal display, which makes the manufacturing cost very high. Also, the reason why the manufacturing cost is high is that it is necessary to set up a completely different manufacturing line depending on the presence or absence of the liquid crystal display, and the complexity of the manufacturing process of the button telephone limits the price reduction by mass production. Is occurring.

In view of the problems of the conventional button telephone structure as described above, an object of the present invention is to provide a liquid crystal display later, and use a specific telephone case regardless of the presence or absence of the liquid crystal display. You can get a button phone.

-Means for Solving the Problems-To achieve this object, the present invention relates to the above-mentioned telephone case containing a telephone circuit board having a mounting hole reaching the inside and having a connector facing the mounting hole. When,
A shielding cover having a fixing hole formed on a side surface thereof and capable of being inserted into the mounting hole to close the mounting hole; and a liquid crystal display mounted in a variable angle state and having a fixing hole formed on the side surface and the shielding cover. An insert block having a connector of a liquid crystal display base which is coupled to the connector when inserted into the mounting hole, and provided inside the telephone case in a state of being elastically engageable with the fixing hole. Further, it proposes a button telephone provided with a fixing claw that is removed from the fixing hole by an external operation.

-Embodiment- Hereinafter, the embodiment of the present invention will be described in detail with reference to the drawings.

1 and 2, a telephone circuit board 2 to which functional elements (not shown) for controlling a button telephone is attached is conventionally incorporated in a telephone case 1 of a button telephone according to the present invention. Is the same as. A mounting hole 4 is formed in the front surface 1a of the telephone case 1 so that a liquid crystal display 3 which will be described later is detachably fixed. That is, as shown in FIG. 1, the mounting hole 4 reaches the inside of the telephone case 1, and the liquid crystal display 3 and the telephone circuit board 2 are provided on the back surface of the telephone circuit board 2 corresponding to the mounting hole 4. The connector socket 5 for electrical connection is fixed. Also,
On the left and right side surfaces of the mounting hole 4, a pair of elastic fixing claws 1b are formed integrally with the telephone case 1,
The claws of these fixing claws 1b can be dropped into the fixing holes 6 on the corresponding side surface of the insert block of the liquid crystal display 3 which is inserted into the mounting hole 4.

The liquid crystal display 3 detachably attached to the attachment hole 4 of the telephone case 1 described above includes an insert block 7 having a size corresponding to the rectangular attachment hole 4, and the attachment hole 4
At the lower part of the insert block 7 which is inserted into, the pin connector 8 which can be connected to the connector socket 5 through the through hole 2a formed in the telephone circuit board 2 is fixed in a protruding state. Further, an indicator main body 9 whose angle can be adjusted in the direction of the arrow in FIG. 1 is supported on the telephone circuit board 2. That is, as shown in FIGS. 3 and 4, polygonal shafts 9a are integrally formed on the left and right sides of the base of the display main body 9, and the support holes 7a of the insert block 7 for receiving the polygonal shafts 9a are formed. A detent spring 10 that is elastically in contact with the peripheral surface of the polygonal shaft 9a and constitutes a detent mechanism is arranged. Therefore, when the indicator main body 9 is strongly rotated in the direction of the arrow, the angle of the indicator main body 9 with respect to the insert block 7 is adjusted about the polygonal axis 9a, and the angle can be adjusted to be easy to see without surface reflection.

Further, inside the display body 9, a liquid crystal cell 11 whose surface is exposed to the outside from the display window 9b and a circuit board 12 for supplying power to the liquid crystal cell 11 are incorporated, and the circuit board 12 and the pin connector 8 are provided. The parts are electrically coupled by a flexible circuit board 13 arranged in a relaxed state inside the display body 9.

On the other hand, when manufacturing a button telephone which does not require the liquid crystal display 3 as shown in FIG. 5, a shield cover 14 is attached to the attachment hole 4 of the telephone case 1. This shield cover 14
Includes an insert block 14a having a fixing hole 7A similar to the insert block 7 described above and a thin decorative plate 14b integrally molded with the insert block 14a.
When it is inserted and fixed, the mounting hole 4 is completely covered with the decorative plate 14b as shown by the phantom line in FIG. Therefore, by displaying the brand name and the function on the surface of the decorative plate 14b, the appearance of the button telephone can be maintained even when the liquid crystal display 3 is not used.

Since the button telephone according to the illustrated embodiment has the above-described structure, the button telephone using the liquid crystal display 3 and the button telephone not using the liquid crystal display 3 are the same if only one type of telephone case 1 is prepared. Can be manufactured in process. That is, whether or not it is a key telephone using the liquid crystal display 3 can be freely selected by assembling the liquid crystal display 3 in the final step or assembling the shield cover 14, so that almost all the manufacturing is performed. The steps can be performed in the same step. Therefore, in the structure of the illustrated example, a plurality of types of telephone cases 1
It is not necessary to prepare, and it is possible to prevent boiling of the product cost caused by preparing a plurality of large molds, and it is possible to fully exert the mass production effect by the same process.

In addition, when the user installs the liquid crystal display 3 after the key telephone is installed, the screw can be removed from the hole 15 provided on the lower surface of the telephone case 1 without disassembling the telephone case 1. -When the tip of a tool such as a driver 16 is inserted and the fixing claw 1b is bent by the tip of the tool, the shield cover 14 can be easily removed, so the shield cover
Instead of 14, the liquid crystal display 3 can be attached to the mounting hole 4 of the telephone case 1 to satisfy the user's request extremely easily.

In the above embodiment, the fixing structure of the mounting hole 4 and the liquid crystal display 3 is one example, but if the hole of the insert block 7 that receives the polygonal shaft 9a is also polygonal, the indicator is displayed on the insert block 7. The angle at which the main body 9 is mounted can be adjusted in advance, and the liquid crystal display 3 can be implemented as a structure in which the angle cannot be adjusted.

-Effects of the Invention-As is apparent from the above description, according to the present invention, it is possible to provide a structure in which a liquid crystal display is used only by preparing one type of telephone case, and a structure in which a liquid crystal display is not used. Since it is possible to deal with this, it is possible to reduce the product cost and rationalize the manufacturing process by sharing the telephone case. Further, in the button telephone of the present invention, since the liquid crystal display can be freely incorporated even after the button telephone is installed, it is possible to add a liquid crystal display after the fact that it was impossible in the past at a low cost. Become.

[Brief description of drawings]

FIG. 1 is an enlarged sectional view of an essential part of a button telephone according to the present invention,
2 is an exploded perspective view of the button telephone, FIG. 3 is an enlarged sectional view taken along line III-III of FIG. 2, and FIG. 4 is IV-IV of FIG.
FIG. 5 is an enlarged sectional view taken along the line, and FIG. 5 is a perspective view corresponding to FIG. 2 of the button telephone set when the telephone case is attached. 1 ... Telephone case, 2 ... Telephone circuit board, 3 ... Liquid crystal display, 4 ... Mounting hole, 5 ... Connector socket, 7
…… Insert block, 9 …… Display unit, 9a …… Polygonal axis.

Claims (1)

[Scope of utility model registration request] 1. A telephone case in which a mounting hole reaching the inside is formed and which has a telephone circuit board having a connector facing the mounting hole, and a fixing hole formed in a side surface and inserted into the mounting hole. A shield cover capable of closing the same mounting hole, and a connector when the liquid crystal display is mounted in a variable angle state and a fixing hole is formed on the side surface and is inserted into the mounting hole instead of the shielding cover. An insert block having a connector of a liquid crystal display base portion to be coupled with the fixing block, and a fixing claw that is provided inside the telephone case in a state of being elastically engageable with the fixing hole and that is detached from the fixing hole by an external operation. Button telephone characterized by.