JPH0419870Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a keyboard mounting structure for a car-mounted telephone or the like.

<Prior art> As electronic circuits of in-vehicle telephones continue to become smaller, the dial and circuitry housed in conventional public telephones are mounted in the handset and can be used as a telephone by itself. It is a so-called handset-type telephone with a handset and receiver.

Conventionally, the keyboard structure that serves as the dial part of this type of in-vehicle telephone has had a keyboard 2 mounted on the cover 1 side, and an electronic circuit 4 and handsets 5, 6, etc. mounted on the case 3 side, as shown in Fig. 1. However, each was connected by wiring etc. This is because when the keyboard part 2 is mounted on the case 3 side, when the cover 1 is fitted to the case 3, the clearance between the key top and the hole 8 for opening the key top 7 provided on the cover 1 side is reduced. This is because, depending on the condition, a problem may arise in which the key top 7 does not operate smoothly.

However, in the conventional wiring connection for the above reasons, assembly is complicated, and when the case 3 and cover 1 are fitted together, the wiring is caught between the case 3 and the cover 1, and the wiring is broken due to so-called wire jamming. I was afraid.

<Purpose of the invention> The purpose of the invention is to improve the above-mentioned drawbacks of the conventional structure and to provide a keyboard mounting structure for an in-vehicle telephone that is easy to assemble and reliable.

<Structure of the device> In order to achieve the above object, the device includes a keyboard, a case for housing the keyboard, an electronic circuit, etc.
In the keyboard mounting structure for a handset type telephone, which includes a cover that includes the keyboard, an electronic circuit, etc., and fits with the case, the keyboard has a plurality of key tops and a case that covers the periphery thereof. , each of the key tops is provided with a convex portion on the outer peripheral edge, and the case is provided with a through hole for accommodating the key top, and the key top surface of the through hole engages with the key top convex portion. A locking convex portion is provided, and the cover is configured to
The key top of the mounted keyboard has a plurality of windows that are opened, and a recess that accommodates the locking protrusion of the case is provided.

<Example> Hereinafter, an example of the present invention will be described with reference to the drawings. Note that FIG. 2 is an exploded perspective view showing one embodiment of the keyboard mounting structure of the present invention, and FIG. 3 is a sectional view showing an in-vehicle telephone to which the keyboard is attached.

As shown in FIGS. 2 and 3, the keyboard 10
It is composed of a printed board 11, a conductive rubber 12, a plurality of key tops 13 for pressing the conductive rubber 12, and a case 14 for casing them, which are integrated by screws 9 and the like.

A through hole 14a for accommodating the key top 13 is provided in the key top surface of the case 14, and a through hole 14a for accommodating the key top 13 is provided in the key top surface of the through hole 14a.
An inward flange-shaped locking protrusion 15 that engages with a flange-shaped protrusion 13a on the outer circumferential edge of 3 is provided.

A case 16 houses the keyboard 10 and a printed board 22 on which electronic components are mounted in advance and which has several fitting holes 21 and fixed with screws 24 or the like via metal fittings 23.
The case 16 is provided with recesses 17 and 18 at both ends for attaching a cover 26, receiver-accommodating parts 19 and 20, and a protrusion 25 for positioning the keyboard 22.

The cover 26 includes the recess 17 of the case 16,
Protrusions 27 and 28 that can be engaged with 18 are provided at both ends,
Further, a plurality of windows 29 are provided to open the key tops 13 provided on the keyboard 10, and recesses 30 are provided inside the windows 29 to fit with the locking protrusions 15 of the case 14. Further, a screw portion 31 for fixing the case 16 and the cover 26 is provided in the cover 26, and a screw hole 32 corresponding to the screw portion 31 is provided in the case 16.

In such a configuration, a handset is mounted on the case 16, and the keyboard 10, which is integrated with a printed board 22 on which electronic components are mounted, is fitted into the protrusion 25. At this time, the hole 21 that fits into the protrusion 25
is slightly larger than the diameter of the protrusion 25 so that the keyboard 10 and printed board 22 can move back and forth and left and right. Then, the cover 26 is fitted onto the case 16 and fixed with screws 32. In this case, the locking protrusion 15 of the case 14 of the keyboard 10
Since the keyboard 10 and printed board 22 are positioned at a position where the recess 30 of the cover 26 fits, the key top 13 does not come into contact with the window 29 provided in the case 16, and the key top 13 operates smoothly.

In the above embodiment, the key top protrusion 13a and the locking protrusion 15 are formed in the shape of a flange, but it is sufficient that they are engaged with each other, and they do not necessarily need to be shaped like a flange.

Further, in the above embodiment, an example in which the present invention is applied to a car-mounted telephone has been described, but the present invention can also be applied to other handset-type telephones.

<Effects of the invention> As described above, with this invention, the keyboard can be easily mounted without the need for screws, and when the case and cover are fitted, there is no wiring connection between the case and the cover, so problems such as wire jamming are avoided. It is easy to assemble, provides a reliable keyboard structure, is highly practical, and has great effects.

Moreover, the case is provided with a locking protrusion that engages with the protrusion of each key top, and the cover is provided with a recess that accommodates the locking protrusion of the case. By fitting the keyboard into the case, the keyboard can be easily positioned.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing a conventional in-vehicle phone, Fig. 2 is an exploded perspective view showing an embodiment of the keyboard mounting structure of the present invention, and Fig. 3 is a sectional view showing the in-car phone with the above-mentioned keyboard attached. It is. 10...Keyboard, 13...Key top, 1
4...Case, 15...Protrusion, 16...Case,
21...hole, 25...protrusion, 26...cover, 3
0... Concavity.

Claims (1)

[Claims for Utility Model Registration] A keyboard for a handset type telephone comprising a keyboard, a case that houses the keyboard and electronic circuits, and a cover that fits with the case while housing the keyboard and electronic circuits. In the mounting structure, the keyboard has a plurality of key tops and a case that covers the periphery thereof, each of the key tops is provided with a convex portion on an outer periphery, and the case has a plurality of key tops. A through hole for accommodating the key top is provided, and a locking protrusion that engages with the key top protrusion is provided on the key top surface of the through hole, and the cover has a plurality of windows through which the key top of the keyboard to be mounted is opened. have, and
A keyboard mounting structure for a handset type telephone, characterized in that a recess is provided for accommodating a locking protrusion of the case.