Damper for washing machine
First Claim
1. A damper for washing machines comprising:
- a cylinder and a piston interactively coupled to each other in a state wherein the cylinder is connected to a tub and the piston is connected to a base;
a first friction member provided around the piston for generating a frictional force when the piston moves inside the cylinder;
a slider coupled to the piston inside the cylinder so as to move together with the piston if the piston moves beyond a predetermined displacement range; and
a second friction member provided around the slider for generating a frictional force when the slider moves inside the cylinder.
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Accused Products
Abstract
Disclosed herein is a damper for washing machines. The damper comprises a cylinder and a piston interactively coupled to each other in a state wherein the cylinder is connected to a tub and the piston is connected to a base, a first friction member provided around the piston for generating a frictional force when the piston moves inside the cylinder, a slider coupled to the piston inside the cylinder so as to move together with the piston if the piston moves beyond a predetermined displacement range, and a second friction member provided around the slider for generating a frictional force when the slider moves inside the cylinder. The damper configured as stated above generates different damping forces according to the vibration degrees of the tub, thereby effectively attenuating the vibration of the tub.
29 Citations
20 Claims
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1. A damper for washing machines comprising:
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a cylinder and a piston interactively coupled to each other in a state wherein the cylinder is connected to a tub and the piston is connected to a base;
a first friction member provided around the piston for generating a frictional force when the piston moves inside the cylinder;
a slider coupled to the piston inside the cylinder so as to move together with the piston if the piston moves beyond a predetermined displacement range; and
a second friction member provided around the slider for generating a frictional force when the slider moves inside the cylinder. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A damper for washing machines comprising:
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a cylinder connected to one of a tub and a base;
a piston connected to the other one of the tub and the base not connected with the cylinder;
a first friction member provided around the piston so as to come into contact with an inner peripheral surface of the cylinder for generating a frictional force;
a slider inserted into the piston inside the cylinder so as to move relatively;
a second friction member provided around the slider so as to come into contact with the inner peripheral surface of the cylinder for generating a frictional force; and
interlocking means provided at both the piston and the slider for allowing the slider to move together with the piston if the piston moves beyond a predetermined displacement range.
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20. A damper for washing machines comprising:
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a cylinder connected to one of a tub and a base;
a piston connected to the other one of the tub and the base not connected with the cylinder, the piston including a guide rod, having a relatively small diameter, and stoppers provided at both ends of the guide rod, respectively;
a first friction member provided around the piston so as to come into contact with an inner peripheral surface of the cylinder for generating a frictional force;
a slider mounted around the guide rod of the piston so as to move relative to the piston within a predetermined displacement range;
a second friction member provided around the slider so as to come into contact with the inner peripheral surface of the cylinder for generating a frictional force; and
interlocking means provided at contact surfaces between the stoppers and the slider for absorbing a shock caused between the piston and the slider.
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Specification