Abstract: A drum type washing machine including a tub installed in a cabinet is disclosed. The drum type washing machine includes a drum performing washing, a motor rotating the drum, bearing housings having bearings to support a rotation shaft, a suspension connected to the bearing housings and the cabinet to mitigate vibration generated during rotation of the drum, a bracket installed to the bearing housings to form the rear side of the tub, and a gasket installed between the bracket and the tub to seal the tub and to prevent vibration from being transmitted from the bracket to the tub. Volumes of the tub and the drum can be easily increased without increasing the volume of the cabinet. Even when the volume of the washing machine is changed, only one of the tub and the bearing housings, which is not applicable to the drum type washing machine having the changed washing capacity, is selectively replaced. Thus parts can commonly used in various drum type washing machine having different volume.

Abstract: A dynamic vibration absorber for a washing machine is provided. The dynamic vibration absorber for a washing machine includes: a mass body; at least one elastic body for supporting the mass body so that the mass body may vibrate; and a guider for limiting a motion of the mass body, wherein the dynamic vibration absorber is attached to the washing machine generating a vibration upon operating to reduce the vibration of the washing machine.

Abstract: A suspension system for use in a laundry washing machine to suspend a tub assembly from a base portion of a cabinet. The suspension system includes a support frame interconnected to an outer tub of the tub assembly and a plurality of isolation damper units for resiliently coupling the support frame to the base portion of the cabinet. The isolation damper units function to allow limited lateral movement of the tub assembly relative to the cabinet while also providing a “return to center” feature. The isolation damper units are further operable to inhibit rotation of the outer tub relative to the cabinet. Finally, the isolation damper units function to absorb the vibration transmitted through the tub assembly to the support frame so as to minimize transmission of such vibration to the cabinet.

Abstract: Drum type washing machine including a tub of plastic having a wall for holding washing water therein and mounting a driving part thereon, a drum rotatably arranged inside of the tub, a shaft passed through the tub and connected to the drum for transmission of a driving power from a motor to the drum, at least one bearing for supporting the shaft, a bearing housing having a sleeve form of bearing supporting part, and a stator fastening part extended in a radial direction from the bearing supporting part, wherein both of the bearing supporting part and the stator fastening part are inserted in a tub rear wall, while stator fastening holes in the stator fastening part are exposed, a rotor engaged to a rear end part of the shaft to form the motor together with the stator, and the stator mounted on the stator fastening part of the bearing housing with fastening members on an inner side of the rotor to form the motor together with the rotor, wherein the stator includes an annular helical type core having multiple l

Abstract: A motor for a washing machine has a stator secured to one side of a tub which holds washing water and a rotor disposed on an outer side of the stator. The stator includes a core and an insulator that holds the core, and the insulator has a fastening part with a fastening hole formed on the insulator. A fastener fastens the stator to the one side of the tub using the fastening hole formed on the insulator.

Abstract: A washing machine contains a friction damper device for a washing unit comprising a tub, a washing drum which is rotationally mounted in the tub and a drive for the washing drum. The washing unit is supported in an elastic manner by at least one damper counter to a lower frame part of the housing. In order to prevent the vibratory behavior of the oscillating unit from being influenced above the rotational speed of the resonance, the friction in the damper above the rotational speed of the resonance can be reduced. As a result, at least one friction covering which interacts directly on a piston rod of the damper is pretensed by an energy store counter to the piston rod and can be displaced away from the piston rod by activating an actuator.

Abstract: A washing machine includes a rotary drum, a water tub, a supporting metallic part, a washing machine base, a motor, a controller, and a vibration detecting unit. The vibration detecting unit, inclusive of a differential transformer having a plurality of coils and a magnetic body, is disposed between the supporting metallic part and the washing machine base and detects a vibration of the water tub.

Abstract: A washing machine has a tub that may be made of plastic. A drum is rotatably installed in the tub. A shaft may pass through the tub and connect to the drum for transmission of a driving power from a motor to the drum. The washing machine has a bearing supporting part and a stator fastening part extended in a radial direction from the bearing supporting part, where the tub has an inner surface and an outer surface, and the bearing supporting part and the stator fastening part are disposed between the inner surface and the outer surface of the tub.

Abstract: The present invention provides a washer, damper thereof, and control method thereof, by which noise is reduced by adjusting a damping force of the damper in a manner of turning on/off power of the damper according to an oscillation frequency of a vibrating body such as a washer. The control method reduces noise by supplying power to a damper in an excessive vibration state of a vibrating body such as a washer or by cutting off the power supplied to the damper in a normal vibration state of the vibrating body.

Abstract: Disclosed is a laundry machine, which can wash or dry laundry. The laundry machine includes a housing provided between a washing tub unit and a mounting surface, on which a cabinet containing the washing tub unit is installed; and dynamic vibration absorbers provided to the housing, and configured to offset vibration transmitted from the washing tub unit.

Abstract: A control system is provided for a washing machine including a cabinet, a wash tub positioned within the cabinet and a wash basket rotatably mounted within the wash tub. The control system includes a plurality of supports including two diagonally arranged supports. The plurality of supports are configured to support the washing machine on a surface. At least one load sensor is positioned with respect to each support of the two diagonally arranged supports. The at least one load sensor is configured to detect at least one force component applied to each support by a load within the wash basket. The at least one load sensor is further configured to generate a signal representative of the at least one force component. A controller is in signal communication with the at least one load sensor. The controller is configured to detect an operating load placement condition within the wash basket in response to at least one signal received from the at least one load sensor.

Abstract: Drum type washing machine including a tub of plastic having a wall for holding washing water therein and mounting a driving part thereon, a drum rotatably arranged inside of the tub, a shaft passed through the tub and connected to the drum for transmission of a driving power from a motor to the drum, at least one bearing for supporting the shaft, a bearing housing having a sleeve form of bearing supporting part, and a stator fastening part extended in a radial direction from the bearing supporting part, wherein both of the bearing supporting part and the stator fastening part are inserted in a tub rear wall, while stator fastening holes in the stator fastening part are exposed, a rotor engaged to a rear end part of the shaft to form the motor together with the stator, and the stator mounted on the stator fastening part of the bearing housing with fastening members on an inner side of the rotor to form the motor together with the rotor, wherein the stator includes an annular helical type core having multiple l

Abstract: A damper assembly and washing machine using the same, by which a damper pin configured to facilitate assembly is provided and by which a damper pin is configured to avoid breaking, are disclosed. The damper assembly includes a base having a first connecting portion, a damper having a second connecting portion at one end and attenuating a vibration transferred to the base, and a damper pin penetrating the first and second connecting portions to secure them, the damper pin having a slip-fit connection with the first and second connecting portions.

Abstract: A washing machine having balancers and a method of controlling the same is provided. The number of rotations of a motor is maintained at a designated number before excessive vibration of a tub occurs for a designated time in order to prevent excessive vibration of the tub before balls reach a balancing position. The method includes sensing the number of rotations of a motor; determining whether or not the sensed number of rotations of the motor reaches a designated number of rotations by comparing the sensed number of rotations of the motor with the designated number of rotations; and controlling the motor such that the number of rotations of the motor is maintained at the designated number of rotations when it is determined that the sensed number of rotations of the motor reaches the designated number of rotations.

Abstract: A gasket and washing machine having the same prevent laundry from becoming wedged between a drum and a gasket for preventing water leakage. The gasket is coupled between a cabinet of a drum-type washing machine including a drying duct for providing a drying function and a tub disposed inside the cabinet. The gasket includes an annular lip, protruding inwardly from an inner circumference of the gasket, for preventing foreign matter from entering a space existing between the tub and a rotating drum, and a laundry kicker, protruding inwardly from a predetermined portion of the annular lip, for dislodging laundry that has become wedged between the annular lip and the rotating drum.

Abstract: A washing machine and a control method thereof are provided, which control a rotational speed of a rotary tub (or revolutions per minute: RPM of a motor) according to a vibration level thereof to attenuate a vibration of the rotary tub. The washing machine includes the rotary tub, the motor, a vibration detecting unit and a control unit. The motor is linked to the rotary tub to be supplied with drive power and rotates the rotary tub. The vibration detecting unit detects the vibration level of the rotary tub using a variation of the drive power supplied to the motor when the motorrotates. The control unit controls a current rotational speed of the motor to be increased, maintained or decreased according to the vibration level of the rotary tub detected by the vibration detecting unit.

Abstract: A washing machine having a vibration sensing assembly for sensing a transient vibration of a tub. The vibration sensing assembly includes a fixing part fixed to an inner wall of a cabinet, a rotational part rotatably connected to the fixing part to perform a rotational movement within a predetermined range by the vibration of a tub centering around a portion connected to the fixing part, and a sensor provided to the rotational part to sense the rotational movement of the rotational part.

Abstract: A drum washing machine includes an elastic support mechanism elastically supporting a water tub. The support mechanism includes an oil damper and coil spring. The oil damper includes a cylinder having an opening, a tapered cap mounted so as to close the opening of the cylinder, and a piston rod extending through the tapered portion of the cap. The piston rod has one end connected to the piston and the other end on which a washer is mounted so as to be prevented from falling off. The coil spring has one end including a part with a smaller winding diameter than the other portion. The coil spring is disposed so that the piston rod extends through the coil spring such that the end with the smaller diameter is wound on the tapered portion of the cap. The other end of the coil spring is received by the washer.

Abstract: A washing machine is provided having at least one balancer and a method of manufacturing a balancer thereof is further provided, the method and machine capable of reducing a manufacturing cost and an assembly time, and allowing the balancer assembled to a spin tub to be easily replaced with a new balancer. The balancer applied to the washing machine and the method of manufacturing the balancer of the washing machine are adapted such that a pipe is formed in an annular shape and is assembled to a spin tub, so that a manufacturing cost and an assembly time can be reduced to improve mass productivity. Further, when the balancer is determined to fail after being assembled to the spin tub, the balancer can be rapidly and conveniently replaced with a new balancer, so that material costs can be reduced.

Abstract: A washing machine is provided that has at least one balancer that increases durability by reinforcing the strength of the balancer and is installed on a rotating tub in a rapid and convenient way. The balancer includes first and second housings that have an annular shape and are fused to form a closed internal space, and the first housing including at least one support for reinforcing the strength of the balancer. A spin tub includes an annular recess corresponding to the balancer so as to be coupled with the balancer. The support protrudes from the first housing and comes into contact with a wall of the recess and guides the balancer to be maintained in the recess in place. The supports are continuously formed along and perpendicular to the opposite walls of the first housing, or are disposed parallel to the opposite walls of the first housing at regular intervals.

Abstract: A drum type washing machine including a balancer capable of rapidly reducing vibration of a spin tub. The drum type washing machine includes a spin tub which is rotated by receiving rotational force from a driving motor through a rotating shaft, a rear balancer having an annular shape and being coupled to the spin tub, and a shaft flange provided at a center portion thereof with the rotating shaft and coupled to the spin tub so as to uniformly transfer the rotational force to the spin tub. The rear balancer is supported on a rear surface of a rear cover by the shaft flange. Thus, the balls accommodated in the balancer are prevented from moving out of the balancer, even if the balancer is broken due to long-period use.

Abstract: A washing machine having a cabinet and a drain pump, which prevents the vibration of the drain pump from being transferred to the cabinet, and improves the efficiency in assembling the drain pump with the cabinet. In the washing machine having a cabinet forming an external portion of the washing machine and having a through hole defined through a portion of the cabinet and a drain pump installed on the cabinet, the drain pump includes a connection unit having one end passing through the through hole and protruding to an outside of the cabinet, an anti-vibration member affixed in the through hole to absorb the vibration of the drain pump, and a fixing member connected with the connection unit and pressing the anti-vibration member.

Abstract: A washing machine having a transient vibration sensor assembly is provided. The transient vibration sensor assembly senses transient vibration of a tub to prevent the washing machine from severe shaking and subsequent breakdown. The washing machine includes a cabinet, a tub suspended in the cabinet, a drum rotatably provided in the tub, a motor provided in the cabinet to rotate the drum, a sensor assembly in the cabinet to sense a transient vibration of the tub, and a controller to control the motor, and to stop the motor if the sensor assembly senses that the tub is in a transient vibration state.

Abstract: A suspension system for use in a laundry washing machine to suspend a tub assembly from a base portion of a cabinet. The suspension system includes a support frame interconnected to an outer tub of the tub assembly and an isolation damper assembly for resiliently coupling the support frame to the base portion of the cabinet. The isolation damper assembly functions to allow limited lateral movement of the tub assembly relative to the cabinet while also providing a “return to center” feature. The isolation damper assembly is further operable to prevent rotation of the outer tub relative to the cabinet. Finally, the isolation damper assembly functions to absorb the vibration transmitted through the tub assembly to the support frame so as to minimize transmission of such vibration to the cabinet.

Abstract: A clothes washing machine of the top loading type and which comprises a generally tubular base structure (10) to be inferiorly seated onto the floor (P); a tub (20) to contain a washing liquid and affixed onto the base structure (10); a support frame (30) suspended in the interior of the base structure (10); suspension means (40) to absorb the vibratory and oscillatory motions and that connect the support frame (30) to the base structure (10) in order to maintain the former suspended in the interior of the latter; a motor unit (50) disposed in the interior of the base structure (10) secured to the support frame (30) and carrying a drive shaft (51) extending vertically upwardly to the inside of the tub (20); and a rotative basket (60) disposed in the interior of the tub (20) and which is operatively and selectively associated with the drive shaft (55).

Abstract: A drum type washing machine is provided, in which vibration is efficiently attenuated, by a maximum capacity within a size-fixed cabinet is provided, and by which a user does not bend over or sit down to load laundry into the washing machine. The drum type washing machine includes a cabinet forming an exterior of the drum type washing machine, a tub fixed within the cabinet, the tub having a laundry loading entrance at an outer circumference of the tub, a drum rotatably provided within the tub, the drum having an opening on a lateral side of the drum to communicate with the laundry loading entrance of the tub, a motor assembly provided next to one side of the drum to rotate the drum, and a suspension assembly provided to support a weight of the drum and attenuate vibration of the drum.

Abstract: A washing machine control method includes executing a dewatering step. The method accelerates a motor to rotate a drum according to a predetermined rate in response to the dewatering execution step. The method detects if the predetermined rate exceeds a first value but is less than a second value, and whether a state of vibration exists with respect to the drum rotated according to the predetermined rate; and stops the motor if the detected state of vibration exists.

Abstract: A damper includes: a cylinder: a piston rod inserted to be movable linearly in the cylinder; a guide member provided with a coupling hole to which an insertion portion of the rod member is coupled at a center thereof, and provided with first and second grooves at an outer circumferential surface thereof; a fixed damping member fitted into the first groove and adhered to an inner surface of the cylinder; and a movable damping member up and down movably fitted into the second groove and selectively adhered to the inner surface of the cylinder.

Abstract: A washing machine having a dual-purpose sensor capable of detecting a degree of vibration generated during a dewatering step as well as measuring detergent levels present in the water. The washing machine having a sensor unit installed with respect to an outer tub for holding water. The washing machine includes a microcomputer having an input port receiving an applied voltage, the input port electrically connected to a supply voltage; first and second electrodes, installed so as to be submerged in the water of the outer tub, wherein the first electrode is electrically connected to the supply voltage and the second electrode is electrically connected to ground, to thereby generate the applied voltage for input to the input port of the microcomputer; a spherical conductor disposed adjacent to the electrodes; and a support for supporting the spherical conductor.

Abstract: A laundry appliance comprises a drum for receiving a load of articles. The drum comprises at least two rotatable drum portions and a drive which is capable of rotating the drum so as to cause relative rotation between the drum portions. A controller monitors and controls operation of the appliance. The controller is arranged to determine when there is an overload condition on the drive during a period when the drum portions are being rotated relatively to one another and, in the event of an overload condition, causes the drive to operate in a manner that alleviates the overload condition. The drive can abort the current drum action and begin the next drum action in the sequence and, after a predetermined number of overload conditions, can suspend counter-rotating drum operation. The user may be provided with an indication when an overload condition occurs.

Abstract: A cement balance weight for a drum type washing machine and its manufacturing method. The balance weight includes a housing having a predetermined inner space and an opening for cement injection. The housing includes coupling features that assist coupling the balance weight with a tub.

Abstract: An apparatus comprising a frame; a member movable relative to said frame; a damping device interconnected between the frame and the movable member; a controller for activating the damper to generate a damping condition at a predetermined member operating condition; and system for activating the damping device at a predetermined operating condition of the moving member during a loss of power to the apparatus. The damping device may comprise a field controllable damper that includes a volume of field controllable fluid, which may in turn comprise magnetorheological fluid for example. The rheology of the field controllable fluid is effected during the application of the field.

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.

Abstract: A mono-tub drum-type washing machine includes a cabinet, a tub disposed in the cabinet at a predetermined tilted angle, the tub being integrally formed with the cabinet, a drum rotatably disposed in the tub at the predetermined tilted angle, a drum shaft for transmitting torque of a motor to the drum, and a damper for attenuating vibration of the drum when the drum is driven, the damper being installed in the cabinet.

Abstract: A washing machine 10 of the drum type comprises a drum 20 rotatable about a horizontal or inclined center of rotation, a drive motor 50 for rotating the drum, liquid holding chambers 36 for holding a liquid therein centrifugally, means for detecting an eccentric load of laundry in the drum, and control means 72 for adjusting the amounts of liquid in the chambers in accordance with the detected eccentric load. The amounts of liquid in the chambers are adjustable by braking the drum in rotation. The machine has moment of inertia measuring means 60 for detecting the rotation of the drum. The control means calculates the moment of inertia acting on the drum based on the rotation of the drum detected by the moment of inertia measuring means, and adjusts the magnitude of braking force to be applied to the drum in accordance with the calculated moment of inertia so as to decelerate the drum at a constant rate in adjusting the amounts of liquid in the chambers.

Abstract: Disclosed is a damper for a washing machine, the damper including an external electric source, a movable part for adjusting damping force using the external electric source, a damping pad for varying an exerting state of the damping force in response to an operation of the movable part, a pad holder for supporting the damping pad, a cylinder contacting the damping pad to generate the damping force, a rod inserted in the cylinder. The cylinder is connected to one of a movable part and case of the washing machine, and the rod is connected to the other of the movable part and case of the washing machine. The pad holder is disposed on an outer circumference of the rod.

Abstract: Disclosed is a damper for a washing machine, comprising: a cylinder; a rod of which one end is inserted in the cylinder; a sliding rod further extending from the inserted end of the rod; a pad holder slidably installed apart from and on an outer side of the sliding rod; a damping pad formed on an outer circumference of the pad holder and being in contact with an inner circumference of the cylinder; and a rotation-preventing part interposed between the pad holder and the rod, for preventing a conical rotation of the washing machine.

Abstract: Disclosed is a damper for a washing machine including a cylinder, a rod of which one end is inserted in the cylinder, a sliding rod integrally formed on a proximal end of the rod, a damping part disposed around the sliding rod to perform a damping operation, the damping part having a coupling part contracting/expanding in a radial direction, a seating portion formed on the sliding rode, the coupling part being selectively located on the seating portion, and a magnet formed on the coupling part.

Abstract: A variable damping type damper and a washing machine having the same comprise: a cylinder of which one side is provided with a receiving space having a certain depth and another side thereof is coupled to the cabinet or the tub; a rod of which one side is relative-movably inserted into the receiving space of the cylinder and another side thereof is coupled to the cabinet or the tub; a guide bar provided at an end portion of the rod; a variable volume frictional means expanded and contracted in itself by a difference of flow amount introduced/exhausted into/from an inner space by being coupled to the guide bar, and adhered/detached to/from an inner circumferential surface of the receiving space of the cylinder; a volume type slider performing a relative movement with the variable volume frictional means by being slidably inserted into the guide bar, for causing fluid flow inside the variable volume frictional means; and a frictional member fixedly coupled to the volume type slider for generating a frictional f

Abstract: A clothes washing machine system including a method of detecting a load unbalance. The washing machine system includes a cabinet having a drum rotatably mounted therein. A motor is coupled to the drum for rotating the drum within the cabinet. A memory device is accessible by a processor, such as a digital signal processor (DSP). The memory contains program code for implementing a method that includes determining the motor torque ripple, determining the motor speed, and determining the load unbalance mass based on the motor torque and speed.

Abstract: Washing machine including a cabinet forming an outside shape of the washing machine, legs fitted to a bottom of the cabinet for supporting the cabinet, and leg pads joined to an underside of the legs respectively for attenuating vibration taken place when the washing machine is operated, wherein the leg pad is formed of block copolymer of hard blocks and soft blocks, thereby attenuating vibration.

Abstract: A method of detecting a dewatering unbalance of a washing machine and an operation control method using the same is provided, by which a system stability on dewatering is enhanced by controlling a dewatering speed to be appropriate for a state of unbalance that is quickly and accurately detected at an early stage of the dewatering. In a washing machine sequentially performing washing, rinsing, draining, and dewatering on a washing tub holding water and laundry therein, a method of detecting a dewatering unbalance of the washing machine, including a step of detecting an unbalance amount through a variation width of a rotational speed of the washing tub on performing the dewatering.

Abstract: A washing machine comprises an outer tub disposed in a case and receiving water therein, an inner tub installed in the outer tub, receiving laundry therein and rotated for washing and dewatering the laundry and a lower balancer installed at a lower part of the inner tub for reducing vibration generated during rotation of the inner tub. Accordingly, a lopsidedness and vibration of the inner tub generated during washing and dewatering operations can be prevented.

Abstract: A drum washing machine according to the present invention restrains vibration and noise at the time of spin-drying. For this purpose, a drum 4 is supported so as to be rotatable by rotating shafts 51L and 51R respectively extending in an approximately horizontal direction outward from its end surface walls 41L and 41R. Water storage balancers G are respectively attached to the end surface walls 41L and 41R of the drum 4, and a fluid balancer 9 is further attached to the end surface wall 41L.

Abstract: Disclosed is a drum type washing machine, which effectively attenuates a vibration transferred to a tub. The present invention includes a cabinet forming an exterior, a tub in the cabinet to hold water, a drum in the tub to hold a detergent and the water, a rotational shaft penetrating into the tub to be coupled with a rear side of the drum, a motor transferring a driving force to the rotational shaft, and a damper provided between the tub and the cabinet to attenuate vertical, horizontal, and front-to-rear vibrations transferred to the tub by a rotation of the drum.

Abstract: Disclosed is a washing machine having a vibration sensing assembly for sensing a transient vibration of a tub, by which shaking and noise, which may be caused by the transient vibration of the tub, of the washing machine is prevented. The present invention includes a tub having an open front side, a drum rotatably provided in the tub to hold laundry, a motor rotating the drum, a cabinet having the tub and the motor inside, a control unit controlling a vibration of the tub, and a vibration sensing assembly for sensing the vibration of the tub, the vibration sensing assembly including a fixing part fixed to an inner wall of the cabinet, a rotational part rotatably connected to the fixing part to perform a rotational movement within a predetermined range by the vibration of the tub centering around a portion connected to the fixing part, and a sensor provided to the rotational part to sense the rotational movement of the rotational part.

Abstract: Disclosed is a drum type washing machine having a vibration attenuating means, by which vibrations generated from driving the drum type washing machine are attenuated. The present invention includes a cabinet forming an exterior, a tub provided in the cabinet to have a front opening and to hold water, and detergent therein, a motor in rear of the tub 200 to have a horizontally installed rotational shaft, a drum in the tub to be rotated by the motor, and a vibration attenuating means that includes a damper unit under the tub to attenuate vertical and horizontal vibrations of the tub and an elastic member over the tub to attenuate a front-to-rear vibration of the tub.

Abstract: Disclosed is a washing machine having a transient vibration sensor assembly, which senses transient vibration of a tub to prevent the washing machine from heavy shaking or breakdown. The present invention includes a cabinet, a tub suspended in the cabinet, a drum rotatably provided in the tub, a motor in the cabinet to rotate the drum, a sensor assembly in the cabinet to sense a transient vibration of the tub, and a control unit controlling the motor, the control unit stopping the motor if the tub is in the transient vibration.

Abstract: A damper includes: a cylinder: a piston rod inserted to be movable linearly in the cylinder; a guide member provided with a coupling hole to which an insertion portion of the rod member is coupled at a center thereof, and provided with first and second grooves at an outer circumferential surface thereof; a fixed damping member fitted into the first groove and adhered to an inner surface of the cylinder; and a movable damping member up and down movably fitted into the second groove and selectively adhered to the inner surface of the cylinder.

Abstract: A damper includes: a cylinder having a receiving space with a predetermined depth in a longitudinal direction on one side thereof; a rod inserted to be movable relatively in a longitudinal direction in the receiving space of the cylinder; a friction surface formed at one side of the cylinder and the rod; a friction member positioned at the cylinder or the rod and rubbing on the friction surface; a thermally deformable member being deformed according to a change in a temperature to make the friction member be tightly attached to the friction surface or separated therefrom; and a heating unit for thermally deforming the thermally deformable member. The damper absorbs the small and large amount of vibrations to thereby prevent transfer of vibration to other parts.