JP2004281331A - Key sheet and method for assembling key sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a key sheet capable of coupling without generating any misalignment or tilting, by using the periphery of a flange for positioning to set direction. <P>SOLUTION: A ring shaped circular key 4 is reversed and set in a positioning jig 6. A protrusion 9 of the flange 8 of the key 4 is engaged in a notch 10 of the positioning jig 6 to limit the key 4 in the radial direction to position with reference to the positioning jig 6. A circle key top 1 is reversed and set in the positioning jig 6. A notch 3 of the flange 2 of the key top 1 is engaged to a protrusion 7 of the positioning jig 6 to limit the key top 1 in the radial direction to position with reference to the positioning jig 6. Adhesive is applied to the key top 1 and the key 4. The key top 1 and the key 4 are covered by a rubber sheet 5, pressurized to couple together then removed from the positioning jig 6. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a key sheet and an assembling method used for the same, and more particularly to a key sheet in which a rubber sheet used for a mobile phone, a remote controller, a telephone, or the like and a key top such as a resin are combined.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in mobile phones, remote controllers, telephones, and the like, push buttons have been used as input means, and some push buttons are made of resin (plastic) or the like, and those made of rubber.
[0003]
Some of those made of rubber include a push button body made of rubber, a mediator, and an engineering plastic, and the push button body and the engineering plastic are integrally connected via a mediator ( For example, see Patent Document 1).
[0004]
In a key sheet used for a mobile phone or the like, a rubber sheet and a key top made of resin or the like are combined. When the key top has a perfect circle and a similar shape, the flange of the key top is formed in a different shape other than a circle as the positioning for coupling, and the portion is held by a jig or the like.
[0005]
[Patent Document 1]
Registered Utility Model No. 301460 (Pages 5 and 6, FIG. 1)
[0006]
[Problems to be solved by the invention]
However, in the above-mentioned conventional key sheet, in the case of a perfect circle and a key top having a similar shape arranged at the center of the ring-shaped key top, the key top when the flange is disconnected from the key top and the rubber sheet is disengaged. Since the key top is disposed under the surrounding ring-shaped key top by preventing the detachment, there is a problem that the outer periphery of the flange cannot be used for positioning.
[0007]
Further, in the conventional key sheet, even if the outer periphery of the key top is held, the regulation in the circumferential direction cannot be performed, so that there is a problem that directivity cannot be provided.
[0008]
Therefore, an object of the present invention is to solve the above-mentioned problems, to use the outer periphery of the flange as a positioning, to provide directionality, and to combine without causing displacement, inclination, and the like. An object of the present invention is to provide a key sheet that can be used and an assembling method used for the key sheet.
[0009]
[Means for Solving the Problems]
A key sheet according to the present invention is a key sheet formed by combining a rubber sheet and a key top, and is a positioning jig that is disposed on a flange at the bottom of the key top and used when the rubber sheet and the key top are combined. And a first positioning member for performing positioning with respect to.
[0010]
A method for assembling a key sheet according to the present invention is a method for assembling a key sheet including a ring-shaped key that couples a key top and a rubber sheet and holds the key top between the rubber sheet and the key top.
Positioning the positioning jig with a first positioning member disposed on the flange of the ring-shaped key bottom and used for positioning the rubber sheet and the key top for positioning the rubber sheet and the key top. Process and
A step of positioning the positioning jig with a second positioning member arranged on the flange at the bottom of the key top and performing positioning with respect to the positioning jig;
Coupling the rubber sheet to the key top and the ring-shaped key.
[0011]
That is, the key sheet of the present invention is a key sheet in which a rubber sheet used for a mobile phone, a remote controller, a telephone, and the like and a key top such as a resin are combined. For a key top that is arranged, has a perfect circular shape and a similar shape, and has directionality by character display and the like, a notch or a projection provided on a flange at the bottom of the key top is used for positioning at the time of coupling with a rubber sheet portion. ing.
[0012]
As a result, in the key sheet of the present invention, it is possible to use the outer periphery of the flange for positioning, to provide directionality, and to combine without causing displacement, inclination, and the like. Become.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a plan view of a key sheet according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line AA in FIG. 1 and 2, in the key sheet according to an embodiment of the present invention, a ring-shaped key 4 made of a resin or the like has a perfect circle and a key top 1 of a similar shape arranged at the center of the key. 4 and the key top 1 are connected to the rubber sheet 5 using an adhesive or the like.
[0014]
The key top 1 has a flange 2 at the bottom, and the flange 2 is provided with two notches 3. The flange 2 is mounted on the lower side of the ring-shaped key 4 and has a structure that does not come off even if the key top 1 and the rubber sheet 5 come off.
[0015]
FIG. 3 is an exploded view of a key sheet according to an embodiment of the present invention, and FIG. 4 is a cross-sectional view of the key sheet according to an embodiment of the present invention when assembled. The assembly of the key sheet according to an embodiment of the present invention will be described with reference to FIGS.
[0016]
The key top 1 made of resin or the like and the ring-shaped key 4 and the rubber sheet 5 are assembled by setting each of them on a jig for joint positioning and using an adhesive. As a procedure, first, the ring-shaped key 4 is set upside down on the positioning jig 6. At this time, the projection 9 of the flange 8 of the ring-shaped key 4 is fitted into the notch 10 of the positioning jig 6, and the circumferential direction of the ring-shaped key 4 is also restricted. The position is determined.
[0017]
Next, the key top 1 of the perfect circle is turned upside down and set on the positioning jig 6. At this time, the notch 3 of the flange 2 of the key top 1 is fitted into the projection 7 of the positioning jig 6, and the circumferential direction of the key top 1 is also restricted, and the position is determined with respect to the positioning jig 6.
[0018]
Next, an adhesive is applied to the key top 1 and the ring-shaped key 4, and a rubber sheet 5 is set thereon, pressed, and bonded. Finally, the key sheet according to the present embodiment is removed from the positioning jig 6 to complete the assembly.
[0019]
As described above, in this embodiment, in the key sheet in which the rubber sheet 5 and the key top 1 made of resin or the like are combined, the circular key top 1, particularly, a perfect circle arranged at the center of a ring shape and the like. By using a key top 1 having a shape and a directionality by a character display or the like as a positioning at the time of bonding a notch 3 provided on a flange 2 of the key top 1 to a rubber sheet 5, the outer periphery of the flange can be positioned. It can be used, can have directionality, and can be connected without causing displacement, inclination, and the like.
[0020]
In the key sheet according to the present invention, the number of notches 3 for positioning provided at the time of adhesive bonding provided on the flange 2 of the key top 1 is not limited. Also, in the key sheet according to the present invention, the notch 3 for positioning provided at the flange 2 of the key top 1 at the time of adhesive bonding can be formed in a projecting shape instead of the notch.
[0021]
Furthermore, in the key sheet according to the present invention, the number of positioning projections 9 provided on the flange 8 of the key 4 at the time of adhesive bonding is not limited, and it is possible to provide a plurality of locations. Furthermore, in the key sheet according to the present invention, the positioning member provided on the flange 8 of the key 4 at the time of adhesive bonding can be a combination of a notch shape and a projection shape.
[0022]
【The invention's effect】
As described above, according to the present invention, by adopting the configuration and the assembling method as described above, the outer periphery of the flange can be used for positioning, and it is possible to have directionality, and to reduce positional deviation, inclination, and the like. The effect of being able to combine without generation is obtained.
[Brief description of the drawings]
FIG. 1 is a plan view of a key sheet according to an embodiment of the present invention.
FIG. 2 is a sectional view taken along the line AA in FIG.
FIG. 3 is an exploded view of a key sheet according to an embodiment of the present invention.
FIG. 4 is a cross-sectional view of the key sheet according to an embodiment of the present invention when it is assembled.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Key top 2, 8 Flange 10, 3 Notch 4 Key 5 Rubber sheet 6 Positioning jig 7, 9 Projection

Claims (9)

A key sheet formed by combining a rubber sheet and a key top. A key sheet comprising the positioning member according to (1). 2. The key sheet according to claim 1, wherein the key top is one of a perfect circle shape and a similar shape thereof, and includes at least a direction by character display. 3. The key sheet according to claim 1, wherein the first positioning member has any shape of a notch, a protrusion, and a combination thereof. 4. The key sheet according to any one of claims 1 to 3, wherein the key top includes a ring-shaped key which is arranged at a center and holds the key top between the key top and the rubber sheet. 5. The key sheet according to claim 4, further comprising a second positioning member disposed on the flange of the ring-shaped key bottom for positioning with respect to the positioning jig. 6. The key sheet according to claim 5, wherein the second positioning member has one of a shape of a notch, a protrusion, and a combination thereof. A method of assembling a key sheet including a ring-shaped key that couples a key top and a rubber sheet and holds the key top between the rubber sheet and the key top,
Positioning the positioning jig with a first positioning member disposed on the flange of the ring-shaped key bottom and used for positioning the rubber sheet and the key top when the rubber sheet and the keytop are coupled to each other. Process and
A step of positioning the positioning jig with a second positioning member arranged on the flange at the bottom of the key top and performing positioning with respect to the positioning jig;
Coupling the rubber sheet to the key top and the ring-shaped key. 8. The method of assembling a key sheet according to claim 7, wherein the key top is one of a perfect circle shape and a similar shape thereof, and includes at least a direction by character display. 9. The key sheet assembling method according to claim 7, wherein the first and positioning members have any shape of a notch, a protrusion, and a combination thereof.

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