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WO2018004295A1 - Machine à laver - Google Patents

Machine à laver Download PDF

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Publication number
WO2018004295A1
WO2018004295A1 PCT/KR2017/006954 KR2017006954W WO2018004295A1 WO 2018004295 A1 WO2018004295 A1 WO 2018004295A1 KR 2017006954 W KR2017006954 W KR 2017006954W WO 2018004295 A1 WO2018004295 A1 WO 2018004295A1
Authority
WO
WIPO (PCT)
Prior art keywords
door
section
lever
cam member
contact
Prior art date
Application number
PCT/KR2017/006954
Other languages
English (en)
Korean (ko)
Inventor
한원재
김영현
김도행
오민환
Original Assignee
삼성전자주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 삼성전자주식회사 filed Critical 삼성전자주식회사
Priority to US16/314,191 priority Critical patent/US10883296B2/en
Priority claimed from KR1020170083142A external-priority patent/KR102401707B1/ko
Publication of WO2018004295A1 publication Critical patent/WO2018004295A1/fr

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/12—Casings; Tubs
    • D06F39/14—Doors or covers; Securing means therefor
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/42—Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D11/00—Additional features or accessories of hinges
    • E05D11/08—Friction devices between relatively-movable hinge parts
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/20—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices in hinges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections

Definitions

  • the present invention relates to a washing machine, and more particularly to a door hinge of the washing machine.
  • a washing machine is an apparatus for washing laundry by performing washing, rinsing, dehydration and drying strokes.
  • the washing machine is a pulsator method in which the water flow generated when the rotor blades with small wings rotate at the lower part of the washing tank impacts the laundry, and the direction of the large stirring blade with the wings in the center of the washing tank is regularly reversed. It is divided into an edge data method for washing water by forming a water stream, and a drum method for washing laundry by the impact of falling and washing power of a detergent by putting the laundry in the drum and rotating the drum.
  • the door of the washing machine is disposed on the upper side to open and close the upper part of the washing machine.
  • the door may be rapidly closed by gravity due to the weight of the door. Accordingly, noise may be generated due to impact or a safety accident may be caused by a user's hand getting caught in the door.
  • One aspect of the present invention provides a washing machine including a hinge unit having a simple power transmission method in opening and closing the washing machine door.
  • Another aspect of the present invention provides a washing machine including a hinge unit to control the opening and closing speed of the door.
  • the washing machine is a first section and a second section and a first section which is rotatable with respect to the cabinet and the cabinet, rotated by the door and the door opening and closing one side of the cabinet, and including different curvatures.
  • a cam member including a curved surface having a third section disposed between the section and the second section, a lever contacting the curved surface of the cam member to press the cam member, and an elastic member elastically supporting the lever.
  • the door is provided to rotate in the direction in which the door is opened when the lever in contact with the first section.
  • the door may be rotated in a direction in which the door is closed when the lever is in contact with the second section.
  • the door is provided such that the door is stopped when the lever is in contact with the third section.
  • the angle of the door is between 75 and 100 degrees.
  • the angle of the door is 0 degrees when the door is closed, the angle of the door is between 0 degrees and 35 degrees when the lever is in contact with the second section.
  • the angle of the door is 0 degrees when the door is closed, the angle of the door is between 25 degrees and 85 degrees when the lever is in contact with the third section.
  • a housing having a shaft inserted into the door to form a rotation axis of the door and coupled to the cam member, and an inner space in which the cam member, the lever, and the elastic member are disposed, wherein the elastic member is in the housing. Is elastically deformed between one side of and one side of the lever, the lever is linearly moved inside the housing by the elastic member, is provided to directly press the cam member by a linear movement.
  • the apparatus further includes a damper disposed at one side of the lever and inserted into the elastic member.
  • the damper may be in contact with one side of the housing when the lever is in contact with the third section, and when the third section and the second section are sequentially in contact with the lever by the rotation of the cam member.
  • a damper is in contact with one side of the housing to drip the linear movement of the lever.
  • the damper includes a damper housing, a cylinder provided inside the damper housing, and a rod which translates inside the cylinder, wherein the damper housing is integrally formed with the lever.
  • the curvature of the third section is greater than the curvature of the first section or the second section.
  • the curvature of the first section is smaller than the curvature of the second section or the third section.
  • the third section includes a fourth section that is formed concave in the direction of the rotation axis of the cam member.
  • the washing machine rotates around a cam rotation axis according to the rotation of the door and the door and the door opening and closing the cabinet and the lever disposed to enable linear movement and the elastic member and the door to elastically bias the lever.
  • a cam member which is configured to include a curved surface having a contact portion in contact with the lever, wherein the curved surface includes a cam member profiled to change the position of the contact portion according to the rotational position of the door.
  • the cam member is profiled so that the distance between the cam rotation shaft and the contact portion becomes shorter as the opening angle of the door increases.
  • the cam member further includes a first section in which the contact portion is located when the opening angle of the door is between 75 degrees and 100 degrees, and the opening direction of the door when the contact portion is positioned on the first section. Profiled to rotate.
  • the cam member further includes a second section in which the contact portion is located when the opening angle of the door is between 0 degrees and 35 degrees, and the closing direction of the door when the contact portion is positioned on the second section. Profiled to rotate.
  • the cam member further includes a third section in which the contact portion is located when the opening angle of the door is between 25 degrees and 85 degrees, and the door is stopped when the contact portion is positioned on the third section. Profiled to keep it.
  • the cam member when the rotational force applied to the cam member by the lever is called the first torque and the rotational force applied to the cam member by the weight of the door is called the second torque, the cam member has the contact portion in the second section. The contact is moved when positioned on the profile so that the magnitude of the first torque is smaller than the magnitude of the second torque.
  • Washing machine is to control the closing speed of the door by using a multi-cam member profile, to simplify the power transmission method using the cam, it is possible to reduce the material cost by reducing the number of parts and to ensure the reliability of driving the washing machine Can be.
  • FIG. 1 is a perspective view of a washing machine according to an embodiment of the present invention.
  • FIG. 2 is a side cross-sectional view of a washing machine according to an embodiment of the present invention.
  • FIG 3 is a perspective view of a partial configuration of a washing machine according to an embodiment of the present invention.
  • FIG. 4 is an exploded perspective view of a hinge unit of a washing machine according to an embodiment of the present invention.
  • FIG. 5 is a view showing a part of the configuration of the hinge unit of the washing machine according to an embodiment of the present invention.
  • FIG. 6 is a view schematically showing a part of the hinge unit and the door of the washing machine according to an embodiment of the present invention.
  • FIG. 7 is a view showing a cam member of the washing machine according to an embodiment of the present invention.
  • FIG. 8 is a view schematically illustrating a process of opening and closing a door of a washing machine according to an embodiment of the present invention.
  • FIG. 9 is a schematic graph of the first torque and the second torque applied to the cam member of the washing machine according to an embodiment of the present invention.
  • FIG. 10 is a view showing a cam member of the washing machine according to another embodiment of the present invention.
  • FIG. 11 is a diagram schematically illustrating a process of opening and closing a door of a washing machine according to another embodiment of the present invention.
  • FIG. 12 is a schematic graph of the first torque and the second torque applied to the cam member of the washing machine according to another embodiment of the present invention.
  • FIG. 13 is an exploded perspective view of a hinge unit of a washing machine according to another embodiment of the present invention.
  • FIG. 14 is a schematic side cross-sectional view of a hinge unit of a washing machine according to another embodiment of the present invention.
  • FIG. 15 is a view schematically illustrating a process of opening and closing a door of a washing machine according to another embodiment of the present invention.
  • FIG. 16 is an exploded perspective view of a hinge unit of a washing machine according to another embodiment of the present invention.
  • FIG. 17 is a schematic side cross-sectional view of a hinge unit of a washing machine according to another embodiment of the present invention.
  • first may be referred to as the second component
  • second component may also be referred to as the first component.
  • the term “and / or” includes any combination of a plurality of related items or any item of a plurality of related items.
  • the 'upper', 'upward', 'lower', 'downward' used in the present specification is a vertical direction of the washing machine according to an embodiment of the present invention shown in FIG.
  • the side describes the upper side and the lower side as the lower side.
  • the 'front', 'rear', 'front side', and 'rear side' describe the front side of the washing machine in FIG. 1 as the front side and the opposite side as the rear side.
  • the left side of the front side is described as the 'left side' and the right side 'right side' based on the washing machine direction in FIG. 1.
  • washing machine according to the spirit of the present invention can be applied to a general washing machine not including the auxiliary washing space as well as a washing machine including the auxiliary washing space as in an embodiment.
  • the washing machine 1 includes a cabinet 10 forming an exterior, a fixing tank 11 disposed inside the cabinet 10 to store wash water, and a fixing tank 11.
  • the rotating tank 12 is rotatably arranged in the inside, and the pulsator 50 is disposed inside the rotating bath 12 to generate water flow.
  • An opening 24 is formed in the upper portion of the cabinet 10 to inject laundry into the rotating tub 12.
  • the opening 24 may be opened and closed by the door 100 installed on the cabinet 10.
  • the fixing tank 11 may be supported by the cabinet 10 by the suspension device 15.
  • the upper part of the fixing tank 11 is provided with a water supply pipe 17 for supplying the wash water to the fixing tank (11).
  • One side of the water supply pipe 17 is connected to an external water supply source, and the other side of the water supply pipe 17 is connected to the detergent supply device 16.
  • the water supplied through the water supply pipe 17 is supplied to the inside of the fixing tank 11 together with the detergent via the detergent supply device 16.
  • the water supply pipe 17 is provided with a water supply valve 18 to control the supply of water.
  • the rotating tub 12 is provided in a cylindrical shape with an open top, and a plurality of dehydration holes 13 are formed at a side thereof.
  • the balancer 14 may be mounted on an upper portion of the rotating tub 12 so that the rotating tub 12 may stably rotate at high speed.
  • the rotating tank 12 is coupled to the hollow dehydration shaft 29, the washing shaft 27 is installed in the hollow portion of the dehydration shaft 29 is coupled to the pulsator 50 through the washing shaft coupling portion 28 Can be.
  • the motor 25 may transmit the driving force to the rotating tub 12 and the pulsator 50 simultaneously or selectively according to the lifting operation of the power switching device 26.
  • the power switching device 26 is connected to the actuator 30 for generating a driving force for power switching, a rod part 31 linearly moving according to the operation of the actuator 30, and a rod part 31.
  • 31 may be configured to include a clutch unit 32 that rotates according to the operation of the device.
  • a drain 20 is formed at the bottom of the fixing tank 11 to discharge the wash water stored in the fixing tank 11, and the first drain pipe 21 is connected to the drain 20.
  • the first drain pipe 21 may be provided with a drain valve 22 to control the drain.
  • the outlet of the drain valve 22 may be connected to the second drain pipe 34 for discharging the wash water to the outside.
  • the opening 24 is provided with a door 100 and an auxiliary washing unit 110 provided below the door.
  • the door 100 is provided at one side of the cabinet 10 and is provided to open and close the opening 24.
  • the door 100 may be provided with a transparent member 110 such that the inside is visible even when the door 100 closes the opening 24.
  • Auxiliary laundry unit 110 is provided with a secondary washing space (110a) to perform a separate hand washing.
  • the auxiliary washing space 110a is provided to be washed separately from the main washing space 11a formed by the fixing tank and the rotating tank.
  • the main washing space 11a and the auxiliary washing space 110a are separated from each other and are provided to be washed separately in each space. In addition, washing in the main washing space (11a) and the auxiliary washing space (110a) may proceed separately, or may proceed simultaneously.
  • the auxiliary washing unit 110 may be provided to be rotatable about one side of the inside of the door 100.
  • the auxiliary laundry unit 110 may be provided to have the same axis to match the rotational axis of the door 100.
  • a water supply device 160 may be included to supply water to the main washing space 11a and the auxiliary washing space 120a.
  • the water supply device 160 may include a water supply pipe 162, a main water supply pipe 164, an auxiliary water supply pipe 166, and a conversion unit 168.
  • One end of the water supply pipe 162 may be connected to the water supply valve 18, and the other end thereof may be connected to the switching unit 168.
  • the water supply pipe 162 is provided to transfer the wash water supplied from the water supply valve 18 to the switching unit 168.
  • the main water supply pipe 164 may be provided for water supply to the main washing space 11a.
  • One end of the main water supply pipe 164 may be connected to the detergent supply device 16, and the other end thereof may be connected to the conversion unit 168.
  • An auxiliary water supply pipe 166 may be provided for supplying water to the auxiliary washing space 110a of the auxiliary washing unit 110.
  • the auxiliary water supply pipe 166 may be connected to one end of the auxiliary water supply port 60, and the other end thereof may be connected to the conversion unit 168.
  • the conversion unit 168 is provided to selectively supply the wash water delivered from the water supply pipe 162 to any one of the main water supply pipe 164 and the auxiliary water supply pipe 166. That is, the washing water is supplied to the washing space through at least one of the main water supply pipe 164 and the auxiliary water supply pipe 166 through the control of the switching unit 168.
  • the hinge unit 200 may be disposed at both sides of the door 100 so that the door 100 may be rotatably provided with respect to the opening 24.
  • the hinge units 200 disposed on both sides are provided to be symmetrical to each other.
  • one hinge unit 200 disposed on the right side of the door 100 will be described with reference to FIG. 2.
  • Hinge unit 200 is inserted into the housing 210 and the door 100, the shaft 220 for rotating the door 100, the cam member coupled to the shaft 220 is rotated in conjunction with the rotation of the door 100 230, a lever 240 for pressing the cam member 230, and an elastic member 250 for elastically supporting the lever 240.
  • the housing 210 may include a first chamber 211 in which the elastic member 250 is compressed and extended and the lever 240 reciprocates linearly, and a second chamber 213 in which the cam member 230 rotates. have.
  • the first chamber 211 and the second chamber 213 are provided inside the housing 210 and can be defined as one space in which the above-described components can be arranged.
  • the lower sides of the first chamber 211 and the second chamber 213 may be opened so that the lever 240 and the elastic member 250 may be assembled into the housing 210, and a portion of the upper side of the second chamber 213 may be
  • the cam member 230 and the shaft 220 may be assembled into the housing 210 through the upper side thereof so that the cam member 230 and the shaft 220 may be opened.
  • One side of the first chamber 211 may be provided with a support surface 212 for supporting one end of the elastic member 250.
  • One end of the elastic member 250 is supported on the support surface 212, and thus the elastic member 250 may be compressed when the lever 240 linearly moves in conjunction with the rotation of the cam member 230.
  • the shaft 220 forms an axis of rotation of the door 100 and has a shaft portion 221 coupled to the cam member 230 and an insertion portion 222 extending from the shaft portion 221 and bent and inserted into the door 100. It may include.
  • the shaft portion 221 may be linked to the rotation of the door 100 to rotate in the direction in which the door 100 is rotated, thereby transmitting the rotational force of the door 100 to the cam member 230.
  • the rotation axis of the cam member 230 is provided at the same time as the rotation axis of the door 100 on the shaft part 221 so that the door 100 and the cam member 230 may be rotated around the shaft part 221.
  • the inserting portion 222 may be bent at an angle orthogonal to the shaft portion 221 and inserted into the door 100.
  • the insertion part 222 may be rotated together with the door 100 about the shaft part 221.
  • the angle of the insertion portion 222 with respect to the shaft portion 221 is 0 degrees when the door 100 is in a closed state
  • the angle of the insertion portion 222 is disposed in the vertical direction with respect to the opening 100. It may be equal to the angle.
  • the cam member 230 may include an insertion hole 231 into which the shaft portion 221 is inserted.
  • the shaft portion 221 may be inserted into the insertion hole 231 and coupled with the cap member 230. Accordingly, in accordance with the rotation of the shaft portion 221, the cam member 230 may be rotated in conjunction with the door 100 in a clockwise or counterclockwise direction.
  • the cam member 230 may include a curved surface 232 formed on the outer side.
  • One side of the curved surface 232 may be provided with a contact section 233 in which the lever 240 is in contact with the cam member 230 to transmit the force of the lever 240.
  • the contact section 233 will be described later in detail.
  • It may be disposed on the outer circumferential surface of the cam member 230 of the curved surface 232, but is not limited thereto and may be disposed on the outer side of the cam member 230 to be in contact with the lever 240.
  • the lever 240 may have one side that is elastically supported by the elastic member 250 and the other side that presses the cam member 230 by the elastic force of the elastic member 250.
  • One side of the lever 240 is inserted into the elastic member 250 to support the other end of the guide portion 241 and the elastic member 250 to guide the translational compression extension of the elastic member 250 is elastic to the lever 240 Support portion 242 for transmitting the elastic force of the member 250 may be provided.
  • the other side of the lever 240 may be provided with a body 243 extending from the support 242.
  • the main body 243 may include a pressing unit 244 that contacts the outer circumferential surface 232 of the cam member 230 to press the cam member 230.
  • the compressive force transmitted to the support part 242 may be increased by compressing the elastic member 250.
  • the pressing unit 244 may apply a greater force to the pressing section 233 as the door 100 rotates in the direction in which the door 100 is closed. This will be described in detail later together with the above-described contact section 233.
  • An opening may be formed above the second chamber 213 of the housing 210 as described above for assembling the cam member 230 and the shaft 220.
  • the cam member 230 and the shaft 220 may be formed in the housing.
  • the cap member 260 may be provided to close the opening after being assembled to the 210.
  • the torque applied to the cam member 230 will be described.
  • the direction in which the door 100 is opened will be described as a clockwise direction of the rotating shaft and the direction in which the door is closed as the counterclockwise direction of the rotating shaft, based on FIG. 6.
  • the cam member 230 may be applied with the first torque T1 formed by the pressing of the lever 240 and the second torque T2 formed by the weight of the door 100.
  • the first torque T1 may transmit the force rotating in the clockwise direction of the rotating shaft to the cam member 230 by the compressive force of the elastic member 250 inclined in the vertical direction.
  • the size of the first torque T1 may be calculated as F1 * r1. .
  • the direction in which the force is formed is changed according to the tangential direction of the contact section 233 when the pressing unit 244 presses the cam member 230, and thus the length of the actual r1 may be changed.
  • the first torque T1 assumes that F1 is directed in the compression direction of the elastic member 250, and accordingly assumes that r1 is kept constant.
  • the second torque T2 may transmit the force rotating in the counterclockwise direction of the rotation shaft to the cam member 230 by the force of gravity acceleration F2 generated at the center of gravity G of the door 100. That is, the force rotating in the counterclockwise direction of the rotation shaft by F2 can be transmitted to the cam member 230. Therefore, the second torque T2 may be obtained by multiplying the vertical distance r2 from the center of gravity G of the door 100 to the rotation axis by the weight of the door 100.
  • the first torque T1 and the second torque T2 transmit the force to the cam member 230 in opposite directions, respectively, and a direction in which the larger force is applied among the first torque T1 and the second torque T2.
  • Cam member 230 can be rotated.
  • the door 100 is disposed above the cabinet 10 to rotate the door 100 upward to open the opening 24, and then again the door 100. ) Can be rotated downward to close the opening 24.
  • the conventional washing machine converts a rotational motion of a pin fastened to a door through a link structure into a translational motion and controls the opening / closing motion of the door with the rigidity of the spring or installs an additional hydraulic cylinder.
  • the closing speed of the washing machine door was controlled.
  • the additional member for controlling the closing speed of the door is provided in the hinge unit, the volume of the hinge unit increases, thereby increasing the size of the cabinet or reducing the size of the fixing tub provided inside the cabinet.
  • the additional structure such as link structure is increased, the assembly structure becomes complicated and the manufacturing cost increases.
  • One embodiment of the present invention is hinged by forming a hinge unit 200 in the configuration of the cam member 230 and the elastic member 250 and the lever 240 for supporting the cam member 230 to solve such problems Simplify the power transmission method of the unit 200 to ensure reliability, and to reduce the number of parts due to the reduction of the configuration not only to produce the effect of reducing the manufacturing cost, but also to solve the user's safety problems and to prevent noise Can be.
  • the link structure is disposed between the existing cam member and a configuration such as a slider corresponding to the lever. It can be excluded from the configuration of the hinge unit 200.
  • the cam member 230 is one-way by setting the first section A, the second section C, and the third section B having different curvatures in the contact section 233, respectively.
  • the pressing unit 244 sequentially contacts the first section A, the third section B, and the second section C along the contact section 233 (cam member 230).
  • the value of the force transmitted from the pressurizing unit 244 may be controlled through the curvature set in each section in the order of 2-3-1 sections (CBA).
  • the contact section 234 is disposed between AA and CC by the rotation of the cam member 230.
  • the contact part 234 may be selectively disposed in any one of the first section A, the second section C, or the third section B according to the rotation of the cam member 230.
  • the pressing unit 244 is provided on the lever 240 and in contact with the cam member 230 to transmit the force of the elastic member 250 to the cam member 230, the pressing unit 244 is a cam member
  • the contact point 230 may be the contact portion 234 of the cam member 230.
  • the first section A, the second section C, and the third section B may be provided to include different curvatures, respectively. As shown in FIG. 7, when the center of curvature of the first section A is PA, the center of curvature of the second section C is PC, and the center of curvature of the third section B is PB, It can be seen that the centers of curvature are all located at different positions.
  • the contact portion 234 is disposed in each of the sections A, B, and C, and the direction of the force of F1 transmitted by the pressing section 244. This can vary.
  • the curvature of the third section B may be greater than the curvature of the first section A or the second section C, and the curvature of the first section A is the second section C. ) Or smaller than the curvature of the third section (B). This is an important factor for determining the size of the first torque T1 to be described later, which will be described later.
  • FIG. 8A to 8D illustrate the cam member 230 and the lever 240 disposed according to the rotation of the door 100.
  • the door 100 is excluded and rotated to correspond to the door 100. Only the insert 222 of the shaft 220 is shown.
  • the angle at which the inserting portion 222 is disposed is the same as the angle at which the door 100 is disposed. Although the door 100 is not shown in FIGS. 8A to 8D, the angle at which the inserting portion 222 is disposed is defined as the door 100. It describes by the angle at which it is arranged.
  • the door 100 may be disposed at the fully open position when the contact portion 234 is positioned at the AA point located on the contact section 233.
  • the AA point is a point where the first section A starts, and as the door 100 is rotated in the closing direction, the cam member 230 rotates and the contact portion which contacts the pressing portion 244 as shown in FIG. 8B ( 234 is continuously positioned on the contact section 233 along the first section (A).
  • the contact portion 234 passes through the first section A and the third section B.
  • the third section B is a section having a curvature different from that of the first section A, and the door 100 moves to the closed position by the user's pressing, which will be described later.
  • the pressing unit 244 is pressed against the third section B as shown in FIG. 8C, and the third section B ends and the second section C starts. You can touch BC. As the pressing part 244 continuously contacts the second section C along the third section B, the contact part 234 is continuously disposed on the second section C along the third section B. Can be.
  • the pressing unit 244 may be in contact with the CC point after the BC point is continuously contacted with the second section C through the rotation of the cam member 230. In the case of contact with the point, the door 100 is placed in a fully closed position, such that the door 100 is closed.
  • the pressing unit 244 When rotating in the open state in the closed state of the door 100, the pressing unit 244 may be disposed to the fully open position while the contact section 233 is continuously in contact with the above-described order.
  • the door 100 is clockwise to increase the angle to the opening 24 from 0 degrees such that the opening 24 opens from a fully closed position where the angle to the opening 24 becomes zero to close the opening 24. It may be rotated and fully open when the angle to the opening 24 is 100 degrees.
  • the full opening angle is not limited to one embodiment of the present invention and may be formed at an angle lower than 100 degrees or at a high angle.
  • the door 100 when the door 100 is rotated in a clockwise direction and disposed adjacent to the fully open position, the door 100 may reach the first position a.
  • the contact portion 234 When the door 100 is disposed in the first position (a), the contact portion 234 may be disposed on the first section (A).
  • the torque of the torque applied to the cam member 230 is formed in the first torque T1 direction. It may be rotated in a clockwise direction in which the door 100 is opened.
  • the first torque T1 formed by the contact portion 234 disposed in the first section A is applied to the cam member 230 more strongly than the second torque T2 so that the cam member 230 rotates clockwise.
  • the door 100 may be automatically rotated from the position of FIG. 8B to the position of FIG. 8A without pressure of the user.
  • the door 100 when the door 100 is rotated counterclockwise and disposed adjacent to the fully closed position, the door 100 may reach the second position c.
  • the torque of the torque applied to the cam member 230 is formed in the second torque T2 even when the user does not press the door 100 counterclockwise. It can be rotated in the counterclockwise direction which is the closing direction of the door 100.
  • the first torque T1 formed by the contact portion 234 disposed in the second section C is applied to the cam member 230 weaker than the second torque T2 so that the cam member 230 is counterclockwise.
  • the door 100 is disposed on the second position (c) in conjunction with this, it can be automatically rotated to the position of FIG. 8D without the user pressing.
  • the door 100 may be disposed at a third position b provided between the first position a and the second position c while rotating clockwise or counterclockwise.
  • the contact portion 234 is located on the third section (B), when the door 100 is disposed in the third position (b) includes a position where the external force applied to the cam member 230 is zero Therefore, when the user does not press the door 100, the door 100 may be disposed in a stopped state on the third position (b).
  • the contact section 233 includes the first section A and the second section so that the door 100 may be disposed at the first position a, the second position c, and the third position b as described above.
  • the section C and the third section B are set, and the door 100 is disposed at each position a, c, b when the pressing unit 244 is in contact with each section A, C, B.
  • the contact section 233 may be profiled differently according to the section so as to be possible.
  • the second torque T2 in the case of the second torque T2, the self-weight of the door 100 is not changed during rotation by the door 100 formed by a predetermined material, and therefore, due to gravity acceleration at the center of gravity G of the door 100.
  • the force (F2) value formed is always constant. Therefore, the second torque T2 is changed according to the change value of the vertical distance r2 of the center of gravity G from the rotation axis by the rotation of the door 100. That is, the center of gravity G is not changed while the door 100 is rotated, and the center of gravity G is constantly moved in the rotation direction of the door 100 according to the rotation of the door 100. Since only the vertical distance r2 of G) is constantly changed, the second torque T2 may have a substantially constant change amount.
  • the pressing part 244 is in contact with any part of the contact section 233 by the force F1 formed by the elastic member 250, and the size of F1 and F1 formed at this time.
  • the magnitude of the first torque T1 changes according to the distance r1 in the vertical direction with respect to this facing direction.
  • the F1 value for generating the first torque T1 may vary according to the rotation of the bar cam member 230 formed by the compressive force of the elastic member 250 and accordingly, The F1 value changes according to the degree of rotation of the cam member 230.
  • the direction of F1 transmitted to the cam member 230 through the pressing unit 244 is changed in accordance with the curvature of the curved surface of the cam member 230, the pressing unit 244 is any portion of the contact section 233
  • the direction in which F1 faces is changed depending on whether it is in contact with, and thus the value of the distance r1 in the vertical direction with respect to the direction in which F1 faces is also changed.
  • the magnitude of the force of the first torque T1 can be controlled by changing the curvature of the contact section 233, and accordingly the first torque through the profile of the curved surface 232 of the cam member 230.
  • the size of T1 can be controlled.
  • the torque force applied to the cam member 230 by the first torque T1 and the second torque T2 may be controlled through the profile of the cam member 230.
  • the pressing part 244 is in contact with the first section A, and the first torque T1 is larger than the second torque T2.
  • the door 100 can be automatically rotated in the open direction when the door 100 is disposed in the first position (a).
  • the pressing unit 244 is in contact with the second section (C), and at this time, the first torque (T1) is smaller than the second torque (T2)
  • the curvature of the two sections C may be profiled so that the door 100 may automatically rotate in the closing direction when the door 100 is disposed at the second position c.
  • the pressing part 244 is in contact with the third section (B), and at this time includes an interval in which the external force received by the cam member 230 becomes zero.
  • the user may maintain a stopped state when the user does not press in the opening direction or the closing direction.
  • the door 100 when the door 100 is disposed in the second position (c), the door 100 is automatically rotated in the closing direction, at which time a user's hand is caught between the door 100 and the cabinet 10. May occur.
  • the curvature of the second section C may be profiled so that the magnitude difference between the first torque T1 and the second torque T2 in the second section C does not suddenly open.
  • the closing speed of the door 100 may be controlled so that the 100 is closed slowly.
  • the first position (a) and the third position (b) of the door 100 are divided based on when the door 100 is disposed between approximately 75 and 85 degrees. Can lose. Therefore, when the door 100 is opened and disposed between approximately 75 degrees and 85 degrees, the door 100 is rotated in the opening direction of the door 100 to automatically rotate to the position where the door 100 forms 100 degrees. Can be.
  • the second position c and the third position b of the door 100 may be divided based on when the door 100 is disposed between approximately 25 degrees and 35 degrees. Therefore, when the door 100 is closed and disposed between approximately 25 degrees and 35 degrees, the door 100 is rotated in the direction in which the door 100 is closed to automatically rotate to the position where the door 100 is 0 degrees. Can be.
  • the door 100 when the door 100 is disposed between approximately 25 degrees to 85 degrees in the third position (b), the door 100 may maintain a stopped state when there is no pressurization by the user of the door 100.
  • the first, second, third positions (a, b, c) of the door 100 is disposed in which section of the contact section 233 of the cam member 230 presses the pressing unit 244,
  • the contact portion 234 may vary depending on which section of the first section A, the second section C, and the third section B is disposed.
  • first position (a) and the third position (b) of the door 100 may be divided into approximately 80 degrees and the third position (b) and the second position (c) may be divided into approximately 30 degrees.
  • the angles at which the first, second, third, and third positions (a, b, and c) of 100 are distinguished may vary according to the profile of the cam member 230. This will be described in detail with reference to the graph of FIG. 9.
  • the graph x-axis of FIG. 9 is set to 0 when the angle of the door 100 is 100 degrees when the door 100 is fully open and 100 when the angle of the door 100 is 0 degrees in the fully closed state. . That is, the direction from 0 to 100 on the x axis is the direction in which the door 100 rotates from the fully open state to the closed state.
  • the change in the magnitude of the first torque T1 and the second torque T2 continues as the second torque T2 continues toward the closed position of the door 100 as shown in the graph.
  • the first torque T1 increases in size with rotation, and then decreases as it passes through the change point X1 disposed in the second section C.
  • the section XA in which the first torque T1 is larger than the second torque T2 the section XB to which the first and second torques T1 and T2 correspond, and the first torque T1 are the first The section XC smaller than 2 torques T2 is divided.
  • the section XA in which the first torque T1 is larger than the second torque T2 on the graph is a section in which the contact portion 244 is disposed on the first section A, and the first torque.
  • the section XB to which the T1 and the second torque T2 correspond is a section in which the contact portion 244 is disposed on the third section B, and the first torque T1 is greater than the second torque T2.
  • the smaller section XC is a section in which the contact portion 244 is disposed on the second section C.
  • the door 100 may be disposed at the first position a, and the first torque T1 may be used.
  • the door 100 may be disposed at the third position b, and the first torque T1 is smaller than the second torque T2.
  • the door 100 may be disposed at the second position c.
  • the cam member 230 has a graph value having a shape as shown in FIG. Can be profiled to come out. That is, while the cam member 230 is rotated, the cam member 230 may be profiled to form a graph including an XA section, an XB section, and an XC section.
  • the angle of the door 100 partitioning the XA section, the XB section and the XC section is an arbitrary angle depending on the profile of the cam member 230. Can be changed.
  • the curvature of the contact section 233 may be profiled to arbitrarily set the angle of the door 100 capable of dividing each position (a, b, c). Therefore, the angle dividing the first position (a) and the third position (b) may be set to an angle other than 80 degrees, and the angle dividing the second position (c) and the third position (b) is other than 30 degrees. Can be set at an angle.
  • Each section (A, B, C) of the cam member 230 contact section 233 is an element that partitions the first position (a), the second position (c) and the third position (b) of the door 100
  • Each curvature may be profiled in consideration of the self-weight of the door 100 and the elastic force of the elastic member 250 and the frictional force between the respective components.
  • the first torque shown in FIG. 9 as the angle dividing the first position (a), the second position (c) and the third position (b) of the door 100 by profiling of the cam member 230 is changed.
  • the position of the point where the graphs of T1 and the second torque T2 are in contact with each other may be changed, the first torque on the first section A, the second section C, and the third section B may be changed.
  • the cam member 230 may be profiled so that the relative magnitude of T1) and the second torque T2 are maintained similar to the graph shown in FIG.
  • the contact section 233 'of the cam member 230 according to another embodiment of the present invention will be described.
  • the configuration other than the contact section 230 ′ described below is the same as the configuration of the washing machine 1 according to the exemplary embodiment of the present invention, and thus a redundant description thereof will be omitted.
  • the second section C ′ of the contact section 233 ′ may include a fourth section D ′.
  • the fourth section D ' may be concave with respect to the curved surface 232.
  • the door 100 rotates in the closing direction. As shown in FIG. 9, the first torque T1 and the door 100 rotate in the closing direction. The difference between the magnitudes of the second torques T2 is gradually increased to increase the rotation speed in the closing direction.
  • the angle of the door 100 at which the second section C is started is rotated and closed faster as the door 100 is disposed at an angle lower than 30 degrees around 30 degrees. This is when the door 100 is closed. This is to prevent an accident that the user's finger is caught in the door 100.
  • the angle of the door 100 which may cause an accident due to a user's finger being caught in the door 100, may be said to be about 10 degrees very close to the closed position of the door 100.
  • the door 100 is slowly (here, slowly described above) in the section of 10 to 30 degrees, in which the user's fingers are substantially caught and no injury occurs. Speed at which the door is rotated) may not need to be rotated.
  • the door 100 is fast (where the door is fast in one embodiment).
  • the fourth section D ' is profiled to be rotated.
  • the fourth section D ' may be included on the second section C'.
  • the force for the cam member 230 to push the lever 240 is suddenly increased.
  • the force pushing the lever 240 is reduced compared to the second section (C ') (Fig. 11c) or the third section (B') (Fig. 11a) to reduce the force to compress the elastic member 250
  • the force of the pressing unit 244 to elastically support the cam member 230 is reduced, thereby reducing the size of the first torque T1.
  • a difference in magnitude between the second torque T2 and the first torque T1 is abrupt (here, abruptly).
  • the first torque T1 and the second torque T2 generated when the door 100 is rotated in the closing direction when the contact portion 234 is disposed on the second section C are provided. Size differences) may occur.
  • the graph may form sections XA 'and XB'.
  • the door 100 may be rotated similarly to the graph of FIG. 9 according to the above-described embodiment.
  • the graph according to another embodiment of the present invention has the section XD' within the section XC 'as the door 100 rotates in the closing direction.
  • the XD 'section is a section in which the sizes of the first torque T1 and the second torque T2 are greatly enlarged, and thus the door 100 is in a range of 10 degrees to 30 degrees corresponding to the section XD'. When placed at an angle it can be quickly rotated in the closing direction.
  • the contact portion 234 When the door 100 is rotated in the continuous closing direction, the contact portion 234 is disposed in the second section B '. At this time, as the first torque T1 is temporarily increased, the contact portion 234 is in the fourth section.
  • the rotation speed of the door 100 may be slower than when disposed at (D ′).
  • the XC 'section is when the door 100 has an angle between 0 degrees and 10 degrees, and the size of the first torque T1 is changed from the XD 'section to the XC' section.
  • the door 100 may be rotated more slowly than when the door 100 is disposed at an angle of 10 to 30 degrees, so that a user's finger is caught in the door 100. Can be prevented.
  • the fourth section D ' may be provided in a shape that protrudes convexly with respect to the curved surface 322.
  • the fourth section D ' is convex, the first torque T1 may become larger and the rotation speed of the door 100 may be slower.
  • the fourth section D 'of the cam member 230 may be profiled so that the door 100 may be rotated faster or the door 100 may be slower.
  • a fourth section for controlling the magnitude of the force of the first torque T1 and the second torque T2 in addition to the fourth section D ' may be disposed on the contact section 233. It is possible to control the rotation speed and direction of the.
  • the rotational speed and direction of the door 100 can be freely controlled. Accordingly, the door 100 may be easily controlled only by the configuration of the cam member 230, the lever 240 directly contacting the cam member 230, and the elastic member 250 elastically supporting the lever 240.
  • a hinge unit 200 ' according to another embodiment of the present invention will be described.
  • the configuration other than the lever 240 ′ or the damper 260 described below is the same as the configuration of the washing machine 1 according to the exemplary embodiment of the present invention, and thus a redundant description thereof will be omitted.
  • the hinge unit 200 ′ may additionally include a damper 260 unlike the hinge unit 200 according to the exemplary embodiment of the present invention.
  • the damper 260 may be disposed on one side of the lever 240 '.
  • the damper 260 is inserted into the insertion groove 245 provided at one side of the hinge unit 200 'and disposed at one side of the lever 240', and may be disposed to be inserted into the elastic member 250. have.
  • the guide part 241 is provided, but the lever 240 'according to another embodiment of the present invention has a damper 260 at a position where the guide part 241 is disposed. ) May be provided.
  • a support part 242 ′ is provided at the edge of the insertion groove 245 so that the elastic member 250 is supported by the support part 242 ′ so that an elastic force may be transmitted to the lever 240 ′.
  • the elastic member 250 is supported by the support part 242 'so that the damper 260 is inserted into the elastic member 250.
  • the damper 260 compresses the elastic member 250 without being separated from the lever 240'.
  • the elastic member 250 may be guided to extend.
  • the damper 260 may include a damper housing 261, a cylinder chamber 262 provided inside the damper housing 261, and a rod 263 reciprocating inside the cylinder chamber 262.
  • the cylinder chamber 262 further includes a configuration in which an oil provided to limit the reciprocating motion of the rod 263, an orifice through which the oil is moved, an air chamber, and the like, is omitted for the convenience of description.
  • the damper 260 is linearly moved toward the support surface 212 of the housing 210 by the cam member 230 which is rotated in conjunction with the door 100 when the door 100 is closed. Damping may be performed to attenuate the speed of the linear movement toward the support surface 212 side of the lever 240 '.
  • the curved surface 232 of the cam member 230 is profiled to set torque values T1 and T2 so that the user may close the door 100 and the cabinet 10 when the door 100 is closed. While preventing fingers from being caught, an additional damper 260 may be added to further reduce the closing speed of the door 100 to further prevent a safety accident. In addition, when the door 100 finally closes the opening 24 of the cabinet 10, the closing speed of the door 100 is naturally reduced by the damper 260 so that the user can close the door 100 smoothly and stably. Can be performed.
  • the damper 260 does not come into contact with the support surface of the housing 210 when the pressing part 244 of the lever 240 ′ is in contact with the first section A, as shown in FIG. 15A. It doesn't work. That is, when the pressing unit 244 is in contact with the first section A, the door 100 is disposed in an open section, and the rotation of the door 100 is not limited by the damper 260.
  • FIG. 1 When the door 100 is rotated in the closed direction in the open state, as the cam member 230 is rotated in conjunction with the door 100, the point where the pressing part 244 comes into contact with each other is sequentially formed in the first section A.
  • FIG. The third section B and the third section B may be changed into the second section C.
  • the door 100 While the pressing unit 244 is in contact with one point of the third section B (approximately when the opening angle of the door 100 is about 45 to 100 degrees), the door 100 is further rotated.
  • the opening angle of the door 100 is reduced, the curved surface 232 presses the lever 240 'by the cam member 230 which is rotated, and thus the lever 240' is further toward the support surface 212. Can be moved.
  • the rod 263 of the damper 260 comes into contact with one side of the housing 210, and the damping occurs while the contact surface 263a of the rod 263 comes into contact with the support surface 212 of the housing 210. It is possible to limit the movement of 240 ′ toward the support surface 212.
  • the opening angle of the door 100 may be about 45 degrees.
  • the present invention is not limited thereto, and the opening angle of the door 100 when the contact surface 263a and the support surface 212 are in contact with each other may vary depending on the size of the door 100 or the elastic force of the elastic member 250.
  • the lever 240 has a first torque value T1 while contacting the first section A, the second section C, and the third section B, each of which has a different curvature.
  • the damper 260 is disposed in addition to the adjusted first torque T1 value as in another embodiment of the present invention, and the torque T1 formed in the door 100 by the lever 240 '. The value may be formed differently from the first torque T1 adjusted according to the embodiment of the present invention.
  • a point where the first torque T1 and the second torque T2 have the same value in the third section B is formed so that the door 100 stops.
  • the third section B may have a point at which the first torque T1 and the second torque T2 have the same value due to damping of the damper 260. It may not be formed in the second section (B).
  • the point where the first torque T1 and the second torque T2 have the same value may be sustained for a certain period when according to an embodiment of the present invention, but according to another embodiment of the present invention
  • the point may be formed as one point without lasting a predetermined period such that the first torque T1 and the second torque T2 have the same value.
  • the lever 240 ′′ may include a lever body 243 and a damper portion 246 extending from one side of the lever body 243.
  • the damper portion 246 may be hollow. It may be provided in a cylindrical shape including a.
  • the hinge member 200 ′′ may further include a cylinder chamber 262 disposed in the hollow of the damper part 246 and a rod 263 for translating the inside of the cylinder chamber 262.
  • a cylinder chamber 262 disposed in the hollow of the damper part 246 and a rod 263 for translating the inside of the cylinder chamber 262.
  • the damper portion 246 of the lever 240 ′′ may be viewed as a configuration corresponding to the damper housing 261 according to another embodiment of the present invention described above.
  • the cylinder chamber 262 and the rod 263 to be inserted into the can be seen as a damper configuration, that is, the damper 260 disclosed in the other embodiment of the present invention described above is another embodiment of the present invention. It can be defined that when formed integrally with the lever 240 ".
  • the configuration of the damper housing 261 disclosed in another embodiment of the present invention described above may be integrally formed with the lever 240 ′′ according to another embodiment of the present invention.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)

Abstract

La machine à laver selon la présente invention comprend un dispositif de charnière comprenant un élément de came, un levier et un élément élastique. L'élément de came comporte une surface périphérique externe comprenant une première section et une deuxième section, qui sont formées de façon à avoir des courbures différentes, respectivement, et une troisième section agencée entre les première et deuxième sections. L'élément de came est profilé de sorte que, lorsque le levier entre en contact avec des sections respectives, celui-ci peut être agencé dans une première position dans laquelle la porte est automatiquement ouverte, dans une deuxième position dans laquelle la porte est automatiquement fermée, et dans une troisième position dans laquelle la force résultante externe de l'élément de came devient nulle, de façon à réguler la vitesse de fermeture de la porte. Le schéma de transfert de puissance est simplifié au moyen d'une came, le coût de matériau peut être réduit en réduisant le nombre de composants, et la fiabilité de l'entraînement de la machine à laver peut être assurée.
PCT/KR2017/006954 2016-06-30 2017-06-30 Machine à laver WO2018004295A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/314,191 US10883296B2 (en) 2016-06-30 2017-06-30 Washing machine

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20160082780 2016-06-30
KR10-2016-0082780 2016-06-30
KR10-2017-0083142 2017-06-30
KR1020170083142A KR102401707B1 (ko) 2016-06-30 2017-06-30 세탁기

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WO2018004295A1 true WO2018004295A1 (fr) 2018-01-04

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PCT/KR2017/006954 WO2018004295A1 (fr) 2016-06-30 2017-06-30 Machine à laver

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108505863A (zh) * 2018-05-22 2018-09-07 广东东箭汽车科技股份有限公司 一种门板缓冲助力装置及汽车
CN112681921A (zh) * 2019-10-17 2021-04-20 宁波方太厨具有限公司 一种阻尼转轴结构及应用有该结构的清洗机
US11021834B2 (en) * 2019-07-12 2021-06-01 Whirlpool Corporation Laundry treating appliance having a hinge assembly
US11118303B2 (en) * 2018-12-24 2021-09-14 Whirlpool Corporation Various hinge brackets and a hinge receiver for a laundry appliance
WO2024175063A1 (fr) * 2023-02-22 2024-08-29 合肥美的洗衣机有限公司 Dispositif de traitement de linge

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Publication number Priority date Publication date Assignee Title
JPH09131495A (ja) * 1995-11-09 1997-05-20 Samsung Electronics Co Ltd ドア自動開閉装置を設けた洗濯機
KR100744968B1 (ko) * 2006-05-25 2007-08-06 풍원공업 주식회사 도어 힌지
KR20100000624A (ko) * 2008-06-25 2010-01-06 삼성전자주식회사 조리기기
KR20110013149A (ko) * 2009-07-31 2011-02-09 엘지전자 주식회사 세탁물 처리기기
KR101255516B1 (ko) * 2011-11-16 2013-04-23 풍원공업 주식회사 도어 힌지

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09131495A (ja) * 1995-11-09 1997-05-20 Samsung Electronics Co Ltd ドア自動開閉装置を設けた洗濯機
KR100744968B1 (ko) * 2006-05-25 2007-08-06 풍원공업 주식회사 도어 힌지
KR20100000624A (ko) * 2008-06-25 2010-01-06 삼성전자주식회사 조리기기
KR20110013149A (ko) * 2009-07-31 2011-02-09 엘지전자 주식회사 세탁물 처리기기
KR101255516B1 (ko) * 2011-11-16 2013-04-23 풍원공업 주식회사 도어 힌지

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108505863A (zh) * 2018-05-22 2018-09-07 广东东箭汽车科技股份有限公司 一种门板缓冲助力装置及汽车
CN108505863B (zh) * 2018-05-22 2023-11-17 广东东箭汽车科技股份有限公司 一种门板缓冲助力装置及汽车
US11118303B2 (en) * 2018-12-24 2021-09-14 Whirlpool Corporation Various hinge brackets and a hinge receiver for a laundry appliance
US11459695B2 (en) 2018-12-24 2022-10-04 Whirlpool Corporation Various hinge brackets and a hinge receiver for a laundry appliance
US11021834B2 (en) * 2019-07-12 2021-06-01 Whirlpool Corporation Laundry treating appliance having a hinge assembly
US11591744B2 (en) 2019-07-12 2023-02-28 Whirlpool Corporation Laundry treating appliance having a hinge assembly
CN112681921A (zh) * 2019-10-17 2021-04-20 宁波方太厨具有限公司 一种阻尼转轴结构及应用有该结构的清洗机
WO2024175063A1 (fr) * 2023-02-22 2024-08-29 合肥美的洗衣机有限公司 Dispositif de traitement de linge

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