JPH04273745A - External case for portable telephone - Google Patents

Abstract

PURPOSE: To provide an exterior case for portable telephone set in which a case section having an opening and a bottom plate carrying push-buttons constitute a compact constituent although the case section and bottom plate formed by molding plastics. CONSTITUTION: In an exterior case for portable telephone set, a bottom plate 1 carrying push-buttons 2 and a case section 3 having an opening 6 are integrally molded through two processes and it is preferable to use a solid plastic for forming the case section 3 having the opening 6. On the contrary, the bottom plate 1 carrying the buttons 2 is formed of a soft transparent plastic, such as the silicone plastic, etc.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outer case of a mobile phone, and more particularly, the case part is provided with an opening for a push button elastically connected to a bottom plate, and the bottom plate is provided with an opening for a push button elastically connected to a bottom plate. The present invention relates to an outer case of a mobile phone, in which the push button is provided on the inner surface of the mobile phone, and the push button protrudes from the bottom plate through the opening.

0002

BACKGROUND OF THE INVENTION The case portion with the opening for the push button has been made from mechanically strong plastic. Prior art is known for manufacturing flexible pushbuttons, according to which said pushbuttons:
resiliently coupled to the bottom plate, and the bottom plate includes:
The push button is installed on the circuit board of the mobile phone before being fitted into the case so that the push button protrudes from the opening of the case. The case part with the opening and the bottom plate with the push button have been molded separately in separate molds and have been molded from different plastics.

0003

SUMMARY OF THE INVENTION It is an object of the present invention to provide an outer case for a mobile phone of the type mentioned above, in which the case part with the opening and the bottom plate with the push button are molded from different plastics. Even though they are compact components, they provide the outer case of the mobile phone. The design of the present invention provides a less expensive and more compact mobile phone outer case than conventional separate case and base types. Furthermore, since the push button is integrally molded with the case portion, a water-resistant structure is obtained. A mobile phone with this type of outer case can also be assembled easily and quickly.

0004

The features of the invention will become apparent from the appended claims. In the outer case of the mobile phone of the present invention, the bottom plate with the push button and the case part with the opening are integrally molded from different plastics in two steps. The case part with the opening is preferably molded from a strong plastic, whereas the bottom plate with the push button is molded from a flexible plastic, for example a transparent plastic such as a silicone plastic. On the opposite side of the case part, a bottom plate molded from transparent plastic can be provided with a recess adjacent to the push button for an LED to illuminate the push button. In a preferred embodiment of the invention, the push button is connected to the bottom plate by a thin bridge part, which is integrally molded during the molding of the bottom plate, and which extends from the bottom plate to the opening of the case part. It is slanted towards. The downwardly directed lower surface of the push button includes a platform for a contact surface, the contact surface being adapted to press against a circuit board disposed on the bottom plate when the push button is pressed. It has become. The present invention will be described in detail below with reference to the accompanying drawings.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The mold shown in FIG. 1 is for injection molding a case part and has two half mold parts. namely, an upper mold part 8 and a lower mold part 9, both of which define a gap 11, which is the gap for the case part with the opening. The gap 11
A mechanically strong plastic is injection molded into the case to produce a case with an opening.

FIG. 2 shows the upper mold part 8 and the case part 3 injection molded by the mold. As can be seen from FIG. 2, said lower mold part 9 of FIG. 1 has been replaced by another half mold part 10. Said upper mold part 8, with a case part 3 molded therein, defines a gap 12 with said lower mold part 10, said lower mold part forming a bottom plate with a push button. It is a mold of the shape. Injection molding of an elastic plastic, for example a silicone plastic, into the above-mentioned gap 12 results in the final product illustrated in FIG. A bottom plate 1 is provided,
The bottom plate 1 comprises the push button 2 protruding from the opening 6 of the case part 3, the push button 2 being connected to the bottom plate 1 by a thin bridge part 7 and elastically pushed into the opening 6. so that a platform 5 on the inner surface of said pushbutton 2 with a contact surface (not shown) is connected to a circuit board (not shown) mounted against the bottom plate 1 on said outer case. ) to make contact.

The bottom plate 1 is provided with a recess 4 on the opposite side of the case part 3, adjacent to the push button 2, and in the recess 4, a plate made of transparent silicone plastic is provided for illuminating the push button 2. LEDs can be installed. By employing the above-described manufacturing method, it is possible to simultaneously mold recesses of different colors on the upper surface of the push button, similarly to on the outer surface of the case part 3.

[Brief explanation of the drawing]

FIG. 1 is a partial sectional view of a mold for injection molding a case portion having an opening.

FIG. 2 is a partial sectional view similar to FIG. 1 of the mold in a second injection molding step, with the lower mold portion of the mold illustrated in FIG. 1 being replaced by another mold portion; is a mold for a bottom plate with a pushbutton, which is injection-molded in such a way that it is joined to the case part which is at the same time already injection-molded.

FIG. 3 is a partial schematic representation of the final product, ie the outer case of a mobile phone according to the invention;

[Explanation of symbols]

1...Bottom plate 2...Push button 3...Outer case part 4...Concavity 5...Platform 6...Opening part 7...Bridge part

Claims (6)

[Claims] 1. An outer case of a mobile phone, the case part (3) having an opening (6) for a push button (2).
), the push button (2) is elastically connected to the bottom plate (1), and the bottom plate (1) is connected to the case part (
3), the push button (2) protrudes from the bottom plate (1) through an opening (6) of the case part (3), and the push button ( 2
) and the case part (3),
An outer case for a mobile phone, characterized in that it is integrally injection molded in two steps and from different plastic materials. 2. The case part (3) with the opening (6) is molded from mechanically strong plastic, to which the bottom plate (1) and the push button (2) are molded.
2. The outer case of a mobile phone according to claim 1, wherein the outer case is molded from flexible plastic. 3. An outer case for a mobile phone according to claim 1 or 2, characterized in that the bottom plate (1) with the push button (2) is molded from transparent plastic. [Claim 4] The case portion (3) of the bottom plate (1).
4. A recess (4) for an LED illuminating the push button (2) is provided on the opposite side of the push button (2). Cell phone outer case. 5. The push button (2) is connected to the bottom plate (1) by a thin bridge part, the bridge part comprising:
It is molded together with the bottom plate (1) and the case part (
5. The outer case of a mobile phone according to claim 1, wherein the outer case is inclined from the bottom plate (1) toward the opening (6) of the cell phone. 6. The exterior of the mobile phone according to claim 1, characterized in that the inwardly facing side of the push button (2) is provided with a platform (5) for a contact surface. Case.