Waterproof watch pushbutton
First Claim
1. A sealed pushbutton for a wristwatch, comprising:
- a pushbutton head that is movable between a resting position and an active position,a first fixed conductive element in a case of the wristwatch,a second movable conductive element in the case of the wristwatch,an elastically deformable capsule that hermetically covers said first fixed conductive element, wherein an upper surface of said capsule is in physical contact with a lower surface of the pushbutton head and said capsule is locatable in a non-deformed position when the pushbutton head is in the resting position and in a deformed position when the pushbutton head is in the active position, anda guide piece of said pushbutton head, wherein said guide piece is pressed onto a peripheral part of said capsule, whereinsaid first and second conductive elements form a capacitive switch device in the case of the wristwatch, wherein said switch is in open state when the pushbutton head is in the resting position and in closed state when the pushbutton head is in the active position, andan outer surface of said first fixed conductive element is 1 square millimeter at maximum and a spacing between said outer surface of said first fixed conductive element and a surface of the second movable conductive element is at least 0.3 millimeter in said resting position of the pushbutton.
1 Assignment
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Accused Products
Abstract
A sealed pushbutton for a wristwatch includes a pushbutton head that is movable between a resting position and an active position, a first fixed conductive element, a second movable conductive element, and an elastically deformable capsule. The elastically deformable capsule hermetically covers the first fixed conductor, and an upper surface of the capsule is in physical contact with a lower surface of the pushbutton head and the capsule is locatable in a non-deformed position when the pushbutton head is in its resting position and in a deformed position when the pushbutton head is in its active position. The first and second conductive elements form a capacitive or resistive switch device, and the switch is in open state when the pushbutton head is in its resting position and in closed state when the pushbutton head is in its active position.
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Citations
15 Claims
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1. A sealed pushbutton for a wristwatch, comprising:
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a pushbutton head that is movable between a resting position and an active position, a first fixed conductive element in a case of the wristwatch, a second movable conductive element in the case of the wristwatch, an elastically deformable capsule that hermetically covers said first fixed conductive element, wherein an upper surface of said capsule is in physical contact with a lower surface of the pushbutton head and said capsule is locatable in a non-deformed position when the pushbutton head is in the resting position and in a deformed position when the pushbutton head is in the active position, and a guide piece of said pushbutton head, wherein said guide piece is pressed onto a peripheral part of said capsule, wherein said first and second conductive elements form a capacitive switch device in the case of the wristwatch, wherein said switch is in open state when the pushbutton head is in the resting position and in closed state when the pushbutton head is in the active position, and an outer surface of said first fixed conductive element is 1 square millimeter at maximum and a spacing between said outer surface of said first fixed conductive element and a surface of the second movable conductive element is at least 0.3 millimeter in said resting position of the pushbutton. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A wristwatch comprising:
a pushbutton including a pushbutton head that is movable between a resting position and an active position, a first fixed conductive element in a case of the wristwatch, a second movable conductive element in the case of the wristwatch, an elastically deformable capsule that hermetically covers said first fixed conductive element, wherein an upper surface of said capsule is in physical contact with a lower surface of the pushbutton head and said capsule is locatable in a non-deformed position when the pushbutton head is in the resting position and in a deformed position when the pushbutton head is in the active position, and a guide piece of said pushbutton head, wherein said guide piece is pressed onto a peripheral part of said capsule, wherein said first and second conductive elements form a capacitive switch device in the case of the wristwatch, wherein said switch is in open state when the pushbutton head is in the resting position and in closed state when the pushbutton head is in the active position, an outer surface of said first fixed conductive element is 1 square millimeter at maximum and a spacing between said outer surface of said first fixed conductive element and a surface of the second movable conductive element is at least 0.3 millimeter in said resting position of the pushbutton, and wherein said first fixed conductive element is connected to an electronic detection circuit based on relative impedance variation. - View Dependent Claims (13, 14)
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15. A sealed pushbutton for a wristwatch, comprising:
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a pushbutton head that is movable between a resting position and an active position, a first fixed conductive element in a case of the wristwatch, a second movable conductive element in the case of the wristwatch, an elastically deformable capsule that hermetically covers said first fixed conductive element, wherein an upper surface of said capsule is in physical contact with a lower surface of the pushbutton head and said capsule is locatable in a non-deformed position when the pushbutton head is in the resting position and in a deformed position when the pushbutton head is in the active position, and a guide piece of said pushbutton head, wherein said guide piece is pressed onto a peripheral part of said capsule, wherein said first and second conductive elements form a capacitive or resistive switch device in the case of the wristwatch, wherein said switch is in open state when the pushbutton head is in the resting position and in closed state when the pushbutton head is in the active position, and an outer surface of said first fixed conductive element is 1 square millimeter at maximum, a spacing between said outer surface of said first fixed conductive element and a surface of the second movable conductive element is at least 0.3 millimeter in said resting position of the pushbutton, and the pushbutton head is axially guided and travel of the pushbutton head between said resting position and the active position is less than or equal to 0.3 millimeter.
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Specification