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AssigneeShin-Etsu Polymer Co., Ltd.
InventorsMikio Kiyosawa, Takashi Kawamura
Estimating the term…
In a push-button switch member provided with a movable contact composed of a metal member 7 constituting a contact surface to an opposing electrode 4, a number of holes 6 are formed to the contact surface in the height direction thereof, and the holes 6 are filled up with a filler 8 formed of a flexible resin.
A member for push-button switch having a movable contact made of a metal member consisting a contact surface to be contacted to an opposing electrode, wherein a number of holes are formed to the contact surface so as to extend in a height direction thereof and the holes are filled up with a filler formed of flexible resin.
A method of manufacturing a member for push-button switch provided with a movable contact composed of a metal member constituting a contact surface to an opposing electrode, comprising the steps of forming a number of through holes to the metal member so as to penetrate in a height direction thereof, arranging a filler formed of a flexible resin sheet on one end surface side of the metal member, forming a metal member base material in which the through holes are filled up with the filler in the full height direction amount by pressurizing the metal member in the height direction thereof, punching out the metal member base material so as to provide a contact structure having a predetermined shape, and joining the contact structure to a keypad.
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
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Characterised by the contacts or the contact sites: characterised by the material of the contacts, e.g. conductive polymers
Characterised by the shape or structure of the contact-making surface, e.g. grooved: laminated contacts with divided contact surface
Contacts
Material: composite
Term end not estimated
The present invention relates to a member for a push-button switch provided with a metal member contacting an opposing electrode, and more specifically, to a member for a push-button switch and manufacturing method of the same hardly causing a conductive fault even in the presence of a fine insulating foreign material between the push-button switch member and the opposing electrode.
In a push-button switch utilized for a power window, door mirror or like, high current of 100 to 500 mA is conducted, so that a plate-shaped metal member is used as a member for the push-button switch (which may be merely called here in later a push-button switch member). Further, in a normally-closed type contact, in order to prevent a so-called sticking phenomenon in which the push-button switch member is closely contacted to the opposing electrode and is never separated therefrom, a plate-shaped metal member is used as the push-button switch member.
FIG. 7 is a schematic partial sectional view showing a push-button switch capable of withstanding such a high current.
FIG. 1 is a plan view of a metal member of a contact structure of a push-button switch member according to an embodiment of the present invention.
FIG. 2 shows a vertical section of an essential portion of the contact structure of FIG. 1.
FIG. 3 is an enlarged view of one end of the contact structure of FIG. 1.
A mode for embodying the present invention will be described hereunder with reference to the accompanying drawings.
A contact structure of a push-button switch member according to the embodiment of the present invention is shown in FIGS. 1 and 2. Further, it is to be noted that a state that this contact structure is applied to a keypad is identical to that shown in FIG. 8.
FIG. 1 is a plan view of a metal member of the contact structure. FIG. 2 is a vertical view of an essential portion of the contact structure of the push-button switch member.