JP3409000B2 - Control panel for electronic equipment and method of manufacturing the same - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control panel for electronic equipment and a method for manufacturing the same. More specifically, the present invention relates to a control panel for electronic equipment, which is made of synthetic resin and manufactured by injection molding, and a manufacturing method thereof.

[0002]

2. Description of the Related Art With the recent widespread use of computer-related equipment and communication equipment, extremely low cost is required for an input operation section such as a control panel for inputting / outputting information to / from these, while on the other hand, electronic equipment is required. With high precision of parts, dustproof,
Sealing property is required to prevent destruction of electronic components due to static electricity. For example, control panels used in electronic devices such as mobile phones and personal computers require ultimate cost reduction in order to spread at a low cost, and in particular, cost reduction of switching structures including printed circuit boards is desired. It is rare.

The applicant of the present invention has proposed a control panel for electronic equipment for this purpose (Japanese Patent Laid-Open No. 9-259696). In the proposal, the button body that the finger touches is basically made of synthetic resin, but normally a printed display portion is displayed on this surface. However, there is a problem that the display portion is peeled off due to friction because the display portion is frequently contacted with a finger. Various other methods have been proposed to solve this problem, but the number of man-hours increases even if they are adopted because they do not use sheets, and the number of man-hours increases when they are used for low-cost key sheets. The meaning of adoption is halved.

On the other hand, the applicant of the present invention assembles the push button and the control panel by injection molding (Patent No. 26).
No. 49025), the gap between the push button and the opening of the control panel is inevitably large due to the structure of the injection mold. From the viewpoint of the structure and design of electronic equipment and the inclusion of foreign matter, it is desirable that this gap be as small as possible so long as it functions as a push button.

[0005]

The present invention has been made based on such a technical background, and achieves the following objects. An object of the present invention is to provide a control panel of an electronic device and a manufacturing method thereof in which a gap between an opening of a control panel and a push button inserted and arranged in the control panel is reduced. Another object of the present invention is to provide a control panel for an electronic device, which satisfies airtightness, clarity of display, operability, and can be manufactured at low cost, and a method for manufacturing the same. Still another object of the present invention is to provide a control panel for an electronic device which is excellent in mass productivity and a manufacturing method thereof.

To solve the above problems, the following means are adopted. A control panel of an electronic device according to a first aspect of the present invention is for controlling a control panel member, a push button inserted in an opening of the control panel member, and elastically bending and supporting the push button on the control panel. When the push button support portion, the push button collar formed on the outer periphery of the push button, the push button collar and the control panel member are in close contact, and the push button is operated, the push button support portion is A control panel for operating an electronic device including the control panel member and the push button collar, wherein a contact portion that elastically bends to bring the contact between the push button collar and the control panel member into a non-contact state is provided. The contact portion is a step portion formed on the back surface of the control panel member, and blocks the flow of resin melted in the injection mold when the push button support portion is injection molded. Is characterized by.

In the control panel of the first electronic device, the push button and the push button support may not be integrally joined. Therefore, it is preferable that the push button is coated with a non-fusing agent that prevents heat fusion between the push button and the push button support.

According to a first aspect of the present invention, there is provided a method of manufacturing a control panel for electronic equipment, in which a plurality of recesses to be push button skins are formed in a sheet by thermoforming, and the sheet having the recesses formed therein is subjected to an injection molding die. A key sheet by inserting the resin into the recess and filling the recessed portion with molten resin, inserting and arranging the key sheet in an injection molding die, the key sheet, a control panel member for inserting and arranging the key sheet, and It is characterized in that a synthetic resin melted in a cavity defined by an injection molding die is injected into the cavity and filled therein to form a push button support. As the sheet, a general-purpose sheet is desirable in terms of cost, and a substantially transparent resin is desirable. Further, it is most suitable to be fused and bonded to another synthetic resin.

According to a second aspect of the present invention, there is provided a method for manufacturing a control panel for electronic equipment, in which a sheet is thermoformed to form a plurality of recesses which serve as pushbutton skins, and the sheet is cut into individual pushbutton skins. , The push button outer cover is inserted and arranged in an injection molding die, and the push button outer cover, a control panel member for inserting and placing the push button outer cover, and a composite melted into a cavity defined by the injection molding die It is characterized in that resin is injected to fill the concave portion and the cavity with molten resin to form a push button support.

In the method for manufacturing a control panel for an electronic device according to the first or second aspect of the present invention, the melt of the control button is formed in contact with the push button outer collar formed on the outer periphery of the push button outer cover and the surface of the control panel member. It is preferable that the control panel member and the push button collar are provided with a contact portion for stopping the flow of the synthetic resin.

In the method for manufacturing a control panel for an electronic device according to the first or second aspect of the present invention, it is preferable that a display layer of a push button is printed on the sheet before the thermoforming step of the sheet.

According to a third aspect of the present invention, there is provided a method of manufacturing a control panel for electronic equipment, in which a plurality of push buttons connected to each other are formed,
The push button is individually cut, and the control panel member for inserting and arranging the push button and the push button are inserted and arranged in an injection mold, and the button, the control panel member, and the injection mold. It is characterized in that the molten synthetic resin is injected into the cavity defined by and is filled in the cavity to form the push button support.

Also, in the third aspect of the present invention, there is provided a method of manufacturing a control panel for an electronic device, wherein the push button collar formed on the outer periphery of the push button and the surface of the control panel member are in contact with each other and the molten synthetic resin is used. It is preferable that the control panel member and the push button collar are provided with a contact portion for stopping the flow.

Also, in the method for manufacturing a control panel for an electronic device according to the third aspect of the present invention, the push button is made of a transparent synthetic resin, and a runner for molding the push button is provided on the back surface of the push button. The display layer of the push button may be printed in the closed state.

In the method for manufacturing a control panel for an electronic device according to the third aspect of the present invention, the push button is provided with a non-fusing agent that prevents heat fusion between the push button and the push button support. It may be applied before injection of the support.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below. [Embodiment 1] An example in which a control panel of an electronic device of the present invention is adopted in a portable telephone will be described. The one shown in FIG.
FIG. 4 is a perspective view of a portable telephone including the control panel of the present invention. The mobile phone 1 is composed of a phone main body 2 made of synthetic resin, and an electronic device such as an IC that realizes the function of a telephone is installed inside the phone main body 2.

The telephone body 2 is made up of two bodies and is divided into two parts by a dividing surface 6 at the center of the thickness thereof. One case cover 3 is arranged on the upper surface of the telephone main body 2, and the other rear surface body 5 is arranged on the rear surface thereof. The case cover 3 performs both the function of the control panel and the function of the telephone main body 2, and a plurality of pushbuttons 4 are arranged on the case group 3.
Make up. The case cover 3 and the back surface main body 5 are integrally fixed by fixing means such as screws or notches.

(Printing of Display) Inside the case cover 3,
A push button 4 described below is provided. Hereinafter, this manufacturing method will be described in detail. A sheet 10 which is a uniform sheet as shown in the plan view of FIG. 2 as an outer skin of the push button 4.
To use. The sheet 10 is, for example, a single layer and has a thickness of 0.25.
It is a transparent body such as a polyester film having a thickness of about mm to 0.8 mm, or a translucent body, that is, a thin film-shaped thermoplastic synthetic resin cut into a light-transmitting rectangular shape. The sheet 10 has high tensile strength, is hard to break, is mass-produced by many manufacturers, and is inexpensive, so that it is advantageous in terms of cost.

A display portion 13 for displaying a plurality of numbers, characters, symbols and the like is arranged on the surface of the sheet 10. Display unit 13
Is printed from the back surface to form the printing layer 11. As shown in FIG. 3A, in a state where each print layer 11 of the sheet 10 is on the upper surface (on the drawing), a necessary display portion 13 is printed at the position on the back surface of the finger contact portion 9 to form the print layer 11 on the back surface. To do. However, the print layer 11 may be printed as the background color on the entire surface of the sheet 10 by removing only the display portion 13 such as numbers, characters, and symbols. Since the sheet 10 is a transparent material, the display portion 13 can be displayed from the back surface in the color of the synthetic resin material.

The printing of the printing layer 11 is performed by a known printing means such as silk printing. Since the sheet 10 is a flat plate, there is an advantage that printing on this surface can be easily performed without requiring a special device. Positioning holes 12 are arranged in the upper and lower positions of the seat 10. In order to use a portion of the sheet 10 corresponding to each print layer 11 as a key group, when the back side of each print layer 11 is formed as the push button 4, a convex shape is formed by the thermoforming described below so as to become the finger contact portion 9. Is molded into.

(Sheet Thermoforming) Next, the forming procedure when the key sheet is formed by pressure forming (pressure forming) will be described. 3A to 3D show the sheet 10
It is explanatory drawing of the process of forming the recessed part used as the convex back surface side. The sheet 10 on which printing has been completed is placed on the mold 15 so that the printing layer 11 is on the upper surface. As shown in FIG. 3B, the sheet 10 is placed on the mold 15 so that the thermoforming recesses 1 are formed immediately below the sheet 10 corresponding to the respective printing layers 11.
6 is formed and placed on top. A heating plate 17 having a flat joint surface is arranged immediately above the mold 15.

As shown in FIG. 3C, the mold 15
The printing layer 11 of the sheet 10 and the thermoforming recess 16 of the mold 15 are placed on the upper surface of the sheet 10 by engaging positioning pins (not shown) in the positioning holes 12 of the sheet 10. . The sheet 10 is heated and softened while the heating plate 17 is pressed against the upper surface of the sheet 10.

Compressed air of 0.1 MPa or less is supplied to the upper surface of the softened sheet 10 from the heating plate 17 side, and the air in the thermoforming recess 16 is exhausted from below the mold 15. The lower surface side of the sheet 10 is sucked. By this suction and heating, a plurality of sheet concave portions 14 corresponding to each print layer 11 are formed. As a result, as shown in FIG. 3 (d), each print layer 11 of the sheet 10 becomes a concave portion 14 of the sheet.
Is located inside the bottom surface (the back surface of the convex shape) of which the opposite surface is formed as the finger contact portion 9 of the push button 4.

The finger contact portion 9 is formed in conformity with the shape of the push button 4, and is formed in an arbitrary shape such as a square shape, a circular shape or an elliptical shape. Further, the thermoforming of the sheet 10 is not pressure forming (pressure forming), but vacuum forming in which a thermoplastic sheet is fixed on a mold, and a sheet softened by heating with a heater is sucked into a mold in a vacuum to form the sheet. It may be. Further, the heating plate 17 may be formed in a convex shape and thermoformed.

(Injection molding inside key) FIG. 4 (a)-
(C) shows each sheet concave portion 14 formed on the sheet 10.
It is explanatory drawing of the process in which resin is filled in by injection molding. As shown in FIG. 4A, the finger contact portion 9 of the sheet 10 in which the plurality of sheet concave portions 14 are formed is inserted and arranged in the cavity concave portion 22 formed in the cavity 18 of the movable side template 20. Seat 10 with recess 2
It is placed on the movable side mold plate 20 in a state of being inserted into 2, and the fixed side mold plate 25 is pressed against it in this state. In a state where the movable side mold plate 20 and the fixed side mold plate 25 are pressure-bonded to each other, the gate 26 of the fixed side mold plate 25 is configured to communicate with each of the sheet concave portions 14 of the sheet 10.

FIG. 4B shows the joint surface of the movable side mold plate 20. As shown in FIG. 4C, the molten resin 27 is inserted into each of the sheet concave portions 14 of the sheet 10 via the gate 26.
Are supplied, and these are filled flush with the surface of the sheet 10 to complete the key sheet 24 in which the convex key groups 7 are arranged.
The synthetic resin is arbitrarily selected according to the characteristics required for the push button such as engineering plastic or synthetic resin elastomer. It is preferable that the sheet 10 and the molten resin 27 to be injected are selected from synthetic resin materials that are heat-sealed to each other.

(Assembly of Key to Control Panel) Next, a method of assembling the completed key sheet into the control panel will be described. 5A to 5D are sectional views showing a manufacturing process of the control panel of the electronic device according to the first embodiment. The key sheet 24 is manufactured through the steps described above (see FIG. 5A).

The push button 4 is cut from the key sheet 24 so that the push button collar 21 having a constant width is formed. The push button collar 21 is for locking on the back surface of the case cover 3 after being inserted into the opening portion 8. Push button 4
Is inserted into the opening 8 of the case cover 3 (see FIG. 5).
(C)). The push button 4 temporarily assembled with the case cover 3 is inserted into the cavity 23 in the fixed-side mold plate 25, which is an injection mold. After this, the molten thermoplastic elastomer is injected from the gate 26 and the cavity 23
And the push button 4 are filled in the cavity.

By the injection of the molten resin, the push button support body 28 melts the surface of the case cover 3 by its heat of fusion and is heat-sealed. The contact surface 29 between the case cover 3 and the push button collar 21 is in close contact, so that when the push button support 28 is injected onto this contact surface 29, the molten resin does not flow. It is not necessary to insert a core or the like into the gap 38 between the outer periphery of the push button 4 and the opening 8 of the case cover 3. Therefore,
Since the gap 38 can also be minimized, downsizing and the like can be facilitated and design restrictions can be reduced. The minimum gap 38 is
It can effectively prevent the intrusion of dust and water.

Since the contact surface 29 is not heat-sealed,
When the push button 4 is pushed, the push button support 28 is elastically deformed,
Only the contact surface 29 moves up and down away from the case cover 3,
It functions as a switch as the push button 4. Although the print layer 11 is printed on the sheet 10 in the first embodiment, the print layer 11 is printed on the back surface (upper surface of FIG. 5A) at the stage of the key sheet 24. May be However, the cavity recess 2 of the key sheet 24
The synthetic resin filled in 2 must be substantially transparent.

[Second Embodiment] Although the inside of the push button 4 described above is made of a material different from that of the push button support 28, the push button support 28 and the push button support 28 are integrally molded in an injection molding die. It may be one that has been created. FIG. 6A to FIG. 6C are views showing the sequence of this step. The sheet 10 is cut to form a push button outer skin 19 composed of a plurality of pieces.

On the back surface of the case cover 3, push buttons 4 are provided.
The push button spaces 30 are formed so as to be independently arranged so as to be arranged in units of one. The push button space 30 is 2
The steps are formed in a stepped shape. The push button mounting step portion 31 on the back surface close to the front surface of the case cover 3 has a push button collar 2
1 for engaging. First, the case cover 3 is inserted into the injection molding die 32 (see FIG. 6).

The case cover 3 is inserted into the injection molding die 32, and the push button collar 21 is inserted into the push button mounting step portion 31. The push button mounting step portion 31 of the case cover 3 and the push button collar 21 are in close contact with each other at a contact surface 33. On the other hand, on the outer periphery of the push button mounting step portion 31, the push button support step portion 34 is provided.
Are formed. On the outer periphery of the push button support step portion 34, ribs 35 that partition the push button space 30 are provided.
It is arranged so as to surround.

A space surrounded by the injection molding die 32, the push button outer skin 19, and the rib 35 of the case cover 3 becomes a cavity 36. Then, the melted thermoplastic elastomer is injected from the gate 40 to fill the cavity 36. By this injection, the push button support body 37 melts the surface of the case cover 3 by its heat of fusion and is heat-sealed. Since the contact surface 33 between the case cover 3 and the push button outer skin 19 is in close contact, the molten resin does not flow to this contact surface 33.

For this reason, the contact surface 33 is not fused. Since the resin flow can be blocked by the contact surface 33 that is in close contact, the resin does not flow into the gap 38 between the push button outer cover 19 and the opening 8 of the case cover 3. Therefore,
Since it is not necessary to insert a core or the like into the gap 38, and the gap 38 can be minimized, downsizing of electronic equipment is facilitated and design restrictions are reduced. When the push button 4 is pushed, the push button support 37 is elastically deformed, and only the contact surface 33 moves up and down apart from the case cover 3 to perform the switch function as the push button 4.

[Third Embodiment] In the above-described embodiment, the push button outer skin 19 is used, but it is not always necessary to use this. 7 (a) to 7 (c)
Shows the steps of another manufacturing method. First, each required push button 4 is injection-molded at the same time. The push button 4 is made of a relatively hard and transparent engineering synthetic resin such as polycarbonate or acrylic. With the runner 53 connecting each push button 4,
Printing is performed on the back surface of the push button 4 (see FIG. 7A). A push button collar 51 is formed integrally with the outer circumference of the push button 4. With the runner 53 attached, the entire back surface of the push button 4 is a single plane.

On the back side, a display portion 52 for characters, symbols, background color, etc. necessary for the push button 4 is printed. Since the synthetic resin forming the push button 4 is transparent, the display portion 52 of characters, symbols, background color, etc. is displayed even when printed from the back side or viewed from the front side. After that, the runner 53 is cut to form individual pushbuttons 4 in units of one unit. This case cover 3 is made into an injection molding die 5
5, and the push button collar 51 is inserted into the push button mounting step portion 65.

A contact surface 61 is in close contact between the push button mounting step portion 65 of the case cover 3 and the push button collar 51. On the other hand, a push button support step 64 is formed on the outer periphery of the push button mounting step 65. A rib 66 that defines the push button space 60 is provided on the outer periphery of the push button support step portion 64.
Are arranged so as to surround the push button 4.

A space surrounded by the injection molding die 55, the push button 4, and the rib 66 of the case cover 3 is a cavity 67.
Becomes Then, the melted thermoplastic elastomer is injected from the gate 70 to fill the cavity 67. By this injection, the push button support 68 melts the surface of the case cover 3 by the heat of fusion and heat-bonds it. Case cover 3
Since the contact surface 61 between the push button 4 and the push button 4 is in close contact, the molten resin does not flow to this contact surface 61. For this reason, the contact surface 61 is not fused.

As in the above-described embodiment, the contact surface 61
Is not fused. Since the flow of the molten resin can be blocked by the contact surface 61 in close contact, the gap 38 between the outer periphery of the push button 4 and the opening 8 of the case cover 3 can be minimized. It is not necessary to arrange a core or the like for filling the gap 38, and the gap 38 can be minimized. When the push button 4 is pushed, the push button support 68 is elastically deformed, and only the contact surface 61 moves up and down apart from the case cover 3 to perform the switch function as the push button 4. When the push button 4 is pushed, the push button support 68 is elastically deformed, and only the contact surface 61 moves up and down apart from the case cover 3 to perform the switch function as the push button 4.

[Fourth Embodiment] FIGS. 8A and 8B show
The manufacturing process of the fourth embodiment will be described. FIG. 8A is a diagram showing a state in which the slit 80 is inserted in the key sheet.
(B) is a sectional view showing a situation in which the case cover 3 and the key sheet 24 are inserted into an injection mold and injection molding is performed.
First, a slit 80 having a desired shape is punched between the outer peripheral portion of the sheet 10 of the key sheet 24 manufactured by the above-described method and the key sheet 24, and is formed by a method such as die cutting.
The key sheet 24 having the slits 80 is inserted into the injection molding die 81 together with the case cover 3.

Thereafter, the movable die is closed and the push button support 82
Also, a protrusion 83 for driving the switch is formed. When the molten resin is injected, the molten resin penetrates through the slit 80 and is thermally fused with the base material of the case cover 3. However, as in the above-described embodiment, the contact surface 79 between the case cover 3 and the key sheet 24 is in intimate contact with the contact surface 79.
The molten resin does not flow in 9. It is not necessary to insert a core or the like into the gap 38, and the gap 38 can be minimized. Therefore, the contact surface 79 is not heat-sealed. Therefore, when the push button 4 is pressed, the push button support 82 is elastically deformed, and only the contact surface 79 moves up and down apart from the case cover 3 to perform the switch function as the push button 4.

[Fifth Embodiment] FIG. 9 shows a manufacturing process of a fifth embodiment. The key sheet 24 is similar to that of the fourth embodiment in that the slit 80 is formed, but after printing on the sheet 10, the sheet is thermoformed to form a formed sheet 88. The thermoformed molded sheet 88 is inserted into the injection molding die 87 together with the case cover 3. Thereafter, the movable die is closed to form the push button support 84 and the switch driving projection 85.

When the molten resin is injected, the molten resin made of thermoplastic synthetic resin penetrates the slit 80 and is fused with the base material of the case cover 3. However, similar to the above-described respective embodiments, the case cover 3 and the key sheet 24 are provided.
Since the contact surface 86 with is in close contact, the molten resin does not flow to this contact surface 86. It is not necessary to arrange a core or the like for filling this gap 38, and the gap 38 can be minimized. Since the width of the gap 38 is narrow and the molten resin does not reach this position, the contact surface 86 is not heat-sealed. Therefore, in the fifth embodiment, the push button 4 and the push button support 84 can be made of the same material.

[Sixth Embodiment] The above-described embodiment is
In each case, the push button, the case cover, and the push button support are integrally heat-sealed in the injection molding die or integrally assembled via the primer layer. However, when these are assembled together, there is little play for moving when the push button is pressed, and it is inevitable that the push operation of the push button becomes slightly stiff.

In the sixth embodiment, the push button operation is prevented from becoming hard. FIG. 10 shows the manufacturing process of the sixth embodiment, in which the push button support and the case cover 3 are provided.
FIG. 6 is a cross-sectional view of an injection molding die for integrating the and.

FIG. 10 shows a case cover 3 attached to an injection mold.
And the push button 91 is inserted. The non-fusing agent 9 is formed on the bottom surface of the push button 91 and the outer peripheral surface of the push button collar 94.
2 is applied. The non-fusing agent 92 prevents the push button support 95 and the push button 91 from being heat-sealed. Therefore, the non-fusing agent 92 may be any material that prevents heat fusion and does not precipitate an extra component during injection molding. That is, the push button support 95 is not heat-sealed with the synthetic resin forming the push button 91.
Any of synthetic resins, fats and oils may be used as long as they are not heat-sealed to both or one of the synthetic resins constituting the above.

After inserting the case cover 3 and the push button 91, the movable mold of the injection molding die 90 is closed to form the push button support 95. When this molten resin is injected, the molten resin is thermally fused with the base material of the case cover 3. However, as in the above-described respective embodiments, the case cover 3
Since the contact surface 93 between the push button collar 94 and the push button collar 94 is in close contact, the molten resin does not flow to this contact surface 93. Therefore, the contact surface 93 between the push button collar 94 and the case cover 3 is not heat-sealed.

Further, the opening of the case cover 3 and the push button 9
It is not necessary to insert a core or the like to fill the gap 96 with the gap 1, and the gap 96 can be minimized. Further, the non-fusing agent 92
Prevents the heat fusion between the push button support 95 and the push button 91. Therefore, when the push button 91 is pressed for the switch operation, the push button support 95 is easily bent.

Therefore, when the push button 4 is pressed, the push button support 95 is easily elastically deformed, and only the contact surface 93 moves up and down apart from the case cover 3 to perform the switch function as the push button 4. As in the sixth embodiment, the push buttons coated with the non-fusing agent 92 can also be applied to the first and third embodiments described above.

[Other Embodiments] In the above embodiment, the case cover 3 and the push button supports 28, 37,
Although 68, 82, 84, and 95 are integrally heat-sealed, other members such as a control panel and a frame may be used as long as they have the same function of supporting the push button. Therefore, in the present invention, the member to which the push button 4 is attached does not matter as long as it means that the push button 4 is provided without distinguishing these members.

In the first to fifth embodiments, the push button supports 28, 37, 82, 84 and the case cover 3 are provided.
Is heat-sealed in the injection molding die. However, instead of heat-sealing, a primer agent such as a silicon-based primer may be applied to the case cover 3 in advance, and the case cover 3 may be heat-sealed with the primer agent interposed. Furthermore, when injection molding is performed in a state where the temperature of the molten resin is low, the two may be bonded by an adhesive action instead of heat fusion.

In this case, an adhesive is applied to the case cover 3 in advance to bond the push button support 28 and the case cover 3 together. At this time, the push button supports 28, 37, 82,
The case 84 and the case cover 3 are joined together mainly by an adhesive action, not by heat fusion. Therefore,
The case cover 3 is made of not only engineering plastic, but also a magnesium alloy molded by injection molding,
It may be a metal plate formed by plastic working, a die casting alloy made by a die casting method, or the like.

[0054]

As described above in detail, according to the present invention, it is possible to manufacture a control panel having a high airtightness and a manufacturing process thereof with a few steps. Further, since the display portion of the push button is covered with the outer cover or arranged on the back surface, it is possible to prevent dirt, peeling, etc. due to contact with a finger or the like. Further, since the collar is arranged on the outer circumference of the push button and the collar and the control panel on which the push button is arranged are in contact with each other when assembled by injection molding, it is possible to prevent the molten resin from flowing, so that the push button and this are arranged. It is possible to reduce the gap as much as possible without inserting a core into the gap between the opening of the control panel.

[Brief description of drawings]

FIG. 1 is a perspective view of a portable telephone in which the present invention is adopted.

FIG. 2 is a plan view of a sheet that serves as an outer cover of a push button.

3 (a) to 3 (d) are explanatory views of a process of thermoforming a concave portion on the sheet, which is a convex rear surface side.

FIG. 4A to FIG. 4C are cross-sectional views showing a key sheet manufacturing process.

5A to 5D are cross-sectional views showing a manufacturing process of the control panel of the electronic device according to the first embodiment.

6A to 6C are cross-sectional views showing a manufacturing process of a control panel of an electronic device according to a second embodiment.

7A to 7C are cross-sectional views showing a manufacturing process of a control panel of an electronic device according to a third embodiment.

8A and 8B are diagrams showing a manufacturing process of a control panel of an electronic device according to a fourth embodiment.

FIG. 9 is a diagram showing a manufacturing process of a control panel of an electronic device according to a fifth embodiment.

FIG. 10 shows a manufacturing process of the sixth embodiment,
FIG. 4 is a cross-sectional view of an injection mold for integrating the push button support and the case cover 3.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Portable telephone 2 ... Telephone main body 3 ... Case cover 4 ... Push button 8 ... Opening 9 ... Finger contact 10 ... Sheet 11 ... Printing layer 14 ... Sheet recess 15 ... Mold 17 ... Heating plate 19 ... Push button skin 24 ... Key sheets 28, 37, 68, 82, 84, and 95 ... Push button support

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-4-169015 (JP, A) JP-A-10-188717 (JP, A) JP-A-9-190252 (JP, A) JP-A-9- 259697 (JP, A) JP 5-347112 (JP, A) JP 8-235957 (JP, A) JP 8-227628 (JP, A) JP 8-227632 (JP, A) JP-A-8-227631 (JP, A) JP-A-3-11509 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01H 11/00

Claims (11)

(57) [Claims] And 1. A control panel member and a pushbutton inserted in an opening of said control panel member and pushbuttons support portion for supporting flexes elastically the pushbutton to the control panel, the press The push button collar formed on the outer periphery of the button and the push button collar and the control panel member are in close contact with each other, and when the push button is operated , the push button support portion elastically bends to push the push button. A contact portion where the collar and the control panel member are in non-contact with each other is the control panel member.
A control panel for operating an electronic device including the push button collar , wherein the contact portion is a step portion formed on a back surface of the control panel member , and when the push button support portion is injection-molded. 1. A control panel for electronic equipment, characterized in that it prevents the flow of molten resin in the injection mold. 2. The control panel of the electronic device according to claim 1, wherein the push button and the push button support are not integrally joined. 3. The electronic device control panel according to claim 2 , wherein the push button is coated with a non-fusing agent that prevents heat fusion between the push button and the push button support. A control panel for electronic equipment that features. 4. A sheet is thermoformed to form a plurality of recesses to serve as push button skins, the sheet having the recesses formed therein is inserted into an injection mold, and the recesses are filled with molten resin. A key sheet, the key sheet is inserted and arranged in an injection mold , and the key sheet, a control panel member for inserting and placing the key sheet , and a cavity defined by the injection mold. A method of manufacturing a control panel for an electronic device, comprising: injecting and filling synthetic resin melted in a cavity into the cavity to form a push button support. 5. A sheet is thermoformed to form a plurality of recesses to be pushbutton skins, the sheet is cut into individual pushbutton skins, and the pushbutton skins are inserted and arranged in an injection molding die. , The push button skin, the push button skin is inserted and arranged.
Because of the control panel member, and injecting a molten synthetic resin Kyabyiti partitioned by said injection mold, characterized by molding a pushbutton support is filled with a molten resin into said recess and said cavity And a method for manufacturing a control panel of an electronic device. 6. The method for manufacturing a control panel for an electronic device according to claim 4 or 5 , wherein the push button skin collar formed on the outer periphery of the push button skin and the surface of the control panel member are brought into contact with each other to melt the melt. The control panel member and the contact portion for stopping the flow of the synthetic resin
A method for manufacturing a control panel for an electronic device, comprising a push button collar . 7. The method for manufacturing a control panel for an electronic device according to claim 4 , wherein a display layer of a push button is printed on the sheet before the step of thermoforming the sheet. A method for manufacturing a control panel of an electronic device. 8. A control panel member for molding a plurality of pushbuttons connected to each other , cutting the pushbuttons individually , and inserting and arranging the pushbuttons, and the pushbuttons. Inserted and placed in the mold, the molten synthetic resin is injected into the cavity defined by the button, the control panel member , and the injection mold, and the cavity is filled to form a push button support. A method of manufacturing a control panel for an electronic device, comprising: 9. The method for manufacturing a control panel for an electronic device according to claim 8 , wherein the push button collar formed on the outer periphery of the push button and the surface of the control panel member are in contact with each other and the molten synthetic resin is used. The contact portion for stopping the flow of the control panel member and the push button.
A method for manufacturing a control panel for an electronic device, comprising: 10. The method for manufacturing a control panel for an electronic device according to claim 8 or 9 , wherein the push button is made of transparent synthetic resin, and the runner when the push button is formed on the back surface of the push button. A method of manufacturing a control panel of an electronic device, wherein the display layer of the push button is printed in a state where the mark is attached. 11. The method for manufacturing a control panel for an electronic device according to claim 8 or 9 , wherein the non-fusing agent for preventing heat fusion between the push button and the push button support is provided on the push button. A method for manufacturing a control panel for an electronic device, which is applied before injection of a push button support.