CN109487506B - Lifting device and washing machine comprising same - Google Patents
Lifting device and washing machine comprising same Download PDFInfo
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- CN109487506B CN109487506B CN201710817969.1A CN201710817969A CN109487506B CN 109487506 B CN109487506 B CN 109487506B CN 201710817969 A CN201710817969 A CN 201710817969A CN 109487506 B CN109487506 B CN 109487506B
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- lifting device
- speed reducer
- washing machine
- power unit
- cam
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- 238000005406 washing Methods 0.000 title claims abstract description 45
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 34
- 230000009977 dual effect Effects 0.000 claims description 26
- 230000005540 biological transmission Effects 0.000 claims description 21
- 230000001174 ascending effect Effects 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- 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
- D06F39/125—Supporting arrangements for the casing, e.g. rollers or legs
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- 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
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
- F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
- F16M11/38—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other by folding, e.g. pivoting or scissors tong mechanisms
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
Abstract
The invention belongs to the technical field of washing machines, and particularly provides a lifting device and a washing machine comprising the same. The invention aims to solve the problems that the existing washing machine is difficult to move and the moving device thereof has complex structure and higher production cost. Therefore, the lifting device comprises a double-output-shaft motor, a speed reducer, a cam, a connecting rod and a travelling wheel. The two output shafts of the motor with the double output shafts are respectively connected with the input ends of the two speed reducers, the output ends of the speed reducers are in pivot connection with the first ends of the connecting rods through the cams, and the second ends of the connecting rods are in pivot connection with the travelling wheels. The motor with double output shafts drives the first end of the connecting rod to rotate around the pivoting end through the speed reducer and the cam, so that the second end of the connecting rod drives the traveling wheels to move in the vertical direction, and the washing machine body is lifted or dropped. Due to the structure, the lifting device not only can realize the automatic lifting and moving of the washing machine, but also has simple structure and low production cost.
Description
Technical Field
The invention belongs to the field of washing machine machinery, and particularly provides a lifting device and a washing machine comprising the same.
Background
At present, most of washing machines are difficult to move, and hand buckles are arranged on two sides of the washing machines for carrying convenience and can be moved only by being lifted together manually; some of the washing machine bodies are provided with trundles on a bottom supporting plate to facilitate the movement of the washing machine; some washing machines are provided with hydraulic and pneumatic devices on a bottom supporting plate, so that the casters are prevented from directly contacting the ground to bear load by lifting the washing machine.
However, the prior art solutions still have certain problems, such as time and labor waste; the wheel body of the caster wheel directly contacts the ground to bear weight, and the wheel body is easy to deform and damage and lose function when in use, so that the body of the washing machine inclines and normal use is influenced; set up hydraulic pressure, pneumatic means not only the structure is complicated, still have certain noise, influence user's use impression and experience.
Accordingly, there is a need in the art for a new washing machine to solve the above problems.
Disclosure of Invention
In order to solve the above problems in the prior art, that is, to solve the problems of the existing washing machine that the movement is difficult, the existing moving device has a complex structure and high production cost, the invention provides a lifting device, which is used for bearing supported equipment and comprises a power unit and at least two supporting units; each of the support units includes a support leg slidably provided in a vertical direction; the power unit is in driving connection with each supporting unit respectively; the power unit can drive all the supporting units at the same time so as to drive the supporting feet to move in the vertical direction, and therefore the supported equipment is lifted or dropped.
In a preferred technical solution of the above lifting device, each of the support units further includes a transmission device and a lever structure; the transmission device is arranged at the bottom of the supported equipment, and the input end of the transmission device is in driving connection with the power unit; the first end of the lever structure is connected with the output end of the transmission device, and the second end of the lever structure is connected with the supporting leg; the transmission device can drive the second end of the lever structure to move through the first end of the lever structure, so that the supporting legs are driven to move in the vertical direction, and the supported equipment is lifted or falls down.
In a preferred technical solution of the above lifting device, the transmission device includes a speed reducer, an output end of the speed reducer is connected with the first end of the lever structure, and an input end of the speed reducer is connected with the power unit.
In a preferred technical solution of the above lifting device, the transmission device further includes a cam, and the speed reducer is connected to the first end of the lever structure through the cam.
In a preferred embodiment of the above lifting device, the lifting device includes two of the support units.
In a preferred technical solution of the above lifting device, at least one of the two support units is provided with a travel switch, and when the support foot moves downward to separate the supported device from the ground, the travel switch stops the power unit; when the supporting legs move upwards to enable the supported equipment to be in contact with the ground, the travel switch enables the power unit to stop acting.
In the preferable technical scheme of the lifting device, the bottom of the supporting leg is provided with a walking wheel.
In a preferred technical solution of the above lifting device, the power unit includes a motor, and an output end of the motor is respectively connected to input ends of the speed reducers of the two support units in a driving manner.
In a preferred technical scheme of the lifting device, the motor is a dual-output-shaft motor, and each output shaft of the dual-output-shaft motor is connected with one speed reducer respectively.
In another aspect, the present invention further provides a washing machine, including a machine body and a lifting device disposed at the bottom of the machine body, where the lifting device is the lifting device in any one of the above-mentioned preferred technical solutions.
As can be understood by those skilled in the art, in a preferred embodiment of the present invention, the power unit can simultaneously drive the plurality of support units to drive the support legs to move in a vertical direction, so as to raise or lower the body of the washing machine. Compared with the mode that each supporting unit is provided with one driving device, the structure of the invention is simpler and the production cost is lower.
Specifically, each support unit further comprises a transmission device and a lever structure; wherein at least one supporting unit is provided with a travel switch; the bottom of the supporting leg is provided with a walking wheel. The input end of the transmission device is in driving connection with the power unit, the output end of the transmission device is connected with the first end of the lever structure, and the second end of the lever structure is connected with the supporting legs. The transmission device can drive the second end of the lever structure to move through the first end of the lever structure, and the moving second end can drive the traveling wheels to move in the vertical direction, so that the body of the washing machine is lifted or falls down. When the travelling wheels move downwards to separate the machine body from the ground, the travel switch stops the power unit, and the washing machine can be easily pushed by a user by means of the travelling wheels; when the travelling wheels move upwards to enable the machine body to be in contact with the ground, the travel switch enables the power unit to stop acting, and the washing machine can be firmly fixed on the ground through the fixing feet. The use experience of the user is optimized.
Further, the power unit includes a dual output shaft motor. The dual-output-shaft motor drives the cam to rotate through the speed reducer, the rotating cam drives the first end of the lever structure to move, the second end of the lever structure rotates to the same direction as the first end around the pivoting end along with the movement of the first end of the lever structure, so that the travelling wheel is driven to move in the vertical direction, the machine body is lifted or dropped, and when the travelling wheel moves downwards to separate the machine body from the ground, the travel switch enables the dual-output-shaft motor to stop acting; when the travelling wheels move upwards to enable the machine body to be in contact with the ground, the travel switch enables the double-output-shaft motor to stop acting. Therefore, compared with the hydraulic and pneumatic lifting device in the prior art, the lifting device has the advantages of simpler structure and lower production cost.
Drawings
Preferred embodiments of the present invention will be described below in conjunction with a washing machine with reference to the accompanying drawings, in which:
fig. 1 is a side view of a washing machine of the present invention;
FIG. 2 is a schematic mechanical view of the lift of the present invention;
FIG. 3 is a first side view of the first support unit of the present invention;
FIG. 4 is a schematic view showing the connection relationship of the first link in the lifting device of the present invention;
FIG. 5 is a schematic view of the construction of a first cross bar of the present invention;
FIG. 6 is a schematic view of the connection of a first cross bar according to the present invention;
FIG. 7 is a schematic structural view of a second cross bar of the present invention;
FIG. 8 is a schematic view showing the connection of a second cross bar according to the present invention;
FIG. 9 is a second side view of the first support unit of the present invention;
FIG. 10 is a front view of the reducer of the present invention;
FIG. 11 is a rear elevational view of the speed reducer of FIG. 10;
FIG. 12 is a schematic view of the movable switch and the riding wheel;
FIG. 13 is a circuit diagram of the washing machine when it ascends;
FIG. 14 is a circuit diagram of the washing machine when it descends;
list of reference numerals:
1. a body; 11. a raising key; 12. a descending key; 13. fixing bottom feet; 2. a lifting device; 21. a first supporting unit; 210. a riding wheel; 2101. a first semicircle; 2102. a second semicircle; 211. a first cross member; 212. a speed reducer; 213. a first cam; 2131. an eccentrically projecting shaft; 214. a pull rod; 215. a first link; 2151. a first cross bar; 21511. a first end; 21512. a second end; 21513. a first end hole; 21514. a second end hole; 21515. a first intermediate aperture; 2152. a second cross bar; 21521. a third end; 21522. a fourth end; 21523. a third end hole; 21524. a fourth end hole; 21525. a second central bore; 216. a universal wheel; 217. a support; 2171. a first bracket; 21711. a first pivot shaft; 2172. a second bracket; 21721. a second pivot shaft; 218. a sheath; 219. a movable switch; 2191. an elastic key; 2192. a first connection terminal; 2193. a second connection terminal; 3194. a third connection terminal; 22. a second supporting unit; 23. a power unit; 231. a third cross member; 232. a motor with double output shafts; 233. a first output shaft; 234. a second output shaft.
Detailed Description
It should be understood by those skilled in the art that the embodiments of the present invention are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. For example, although the embodiments of the present invention are described with reference to a washing machine, the lifting device of the present invention can also be applied to other apparatuses, such as an air conditioner, a refrigerator, a safe, etc., and those skilled in the art can adjust the lifting device as needed to suit the specific application, and the adjusted technical solution will still fall into the protection scope of the present invention.
It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicating the directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1, the washing machine of the present invention mainly includes a machine body 1 and a lifting device 2. The bottom of the machine body 1 is provided with or integrally formed with a fixed footing 13. The body 1 is provided with an up button 11 and a down button 12 for controlling the operation of the lifting device 2. The body 1 can be lifted up from the ground by operating the lifting button 11, and the lifted-up body 1 can be lowered back to the ground by operating the lowering button 12. It will be appreciated by those skilled in the art that the lifting device 2 of the present invention may be used not only in washing machines, but also in any other feasible supported apparatus, such as air conditioners, sofas, safes, refrigerators, etc. The person skilled in the art can make appropriate adjustments according to actual needs, and the technical solutions after the adjustments still fall into the protection scope of the present invention.
As shown in fig. 2 and 3, the lifting device 2 of the present invention mainly includes a power unit 23, a first support unit 21, and a second support unit 22. The first supporting unit 21 mainly includes a first beam 211, a reducer 212, a first link 215, and a supporting foot (not shown). The second supporting unit 22 has the same structure as the first supporting unit 21, and includes a second beam (not shown) corresponding to the first supporting unit 21. The power unit 23 mainly includes a third cross member 231 and a dual output shaft motor 232. Wherein, the first cross beam 211, the second cross beam and the third cross beam 231 are respectively arranged at the bottom of the washing machine body 1.
As shown in fig. 2, for the driving unit 23, a dual output shaft motor 232 is fixedly mounted to the third cross member 231, and a first output shaft 233 of the dual output shaft motor 232 is connected to the first supporting unit 21 and a second output shaft 234 of the dual output shaft motor 232 is connected to the second supporting unit 22. It will be understood by those skilled in the art that the dual output shaft motor 232 can be directly connected to the first and second support units 21 and 22 or indirectly connected to the first and second support units 21 and 22 by means of a transmission, which is illustratively a transmission rod.
With continued reference to fig. 2 and 3, for the first supporting unit 21, the bottom of the supporting foot is provided with a universal wheel 216, and the supporting foot is slidably mounted on the first cross beam 211 along the vertical direction, the speed reducer 212 is fixedly mounted on the first cross beam 211, and the input end of the speed reducer 212 is connected to the first output shaft 233 of the dual-output shaft motor 232, the output end of the speed reducer 212 is operatively connected to the first end of the first connecting rod 215, and the second end of the first connecting rod 215 is pivotally connected to the top of the supporting foot. The dual output shaft motor 232 can drive the first end of the first link 215 to move after the rotation speed of the speed reducer 212 is reduced, the first end of the movement can drive the second end of the first link 215 to move, and the second end of the movement can drive the universal wheel 216 to move in the vertical direction, so that the machine body 1 is lifted or dropped.
Moreover, one skilled in the art may substitute dual output shaft motor 232 with any other feasible power device, such as a dual output pneumatic motor, a dual output hydraulic motor, etc., as desired.
Further, it will be appreciated by those skilled in the art that the above-described universal wheels 216 may be replaced by any other feasible road wheels, such as fixed casters. It can be understood by those skilled in the art that the power unit 23, the speed reducer 212 and the universal wheels 216 can also be directly mounted at the bottom of the machine body 1 or mounted around the machine body 1, and the speed reducer 212 can also be disposed on the power unit 23, for example, a reduction gearbox is disposed on the power unit 23, and the power is output after the rotation speed of the power unit is reduced by the reduction gearbox. Furthermore, those skilled in the art can omit the universal wheel 216 according to the requirement, and transfer the washing machine by other moving devices after the machine body 1 is lifted by the lifting device 2. For example, after the machine body 1 is lifted by the lifter 2, the front fork of a small forklift is inserted into the bottom of the machine body 1, and the washing machine is transferred by the forklift.
As shown in fig. 3, the transmission of the present invention further includes a cam 213 and a lever 214 as a second link. The center of the base circle of the cam 213 is coaxially fixed with the output shaft of the reducer 212, the end of the cam 213 away from the center of the base circle is pivotally connected with a first end of the pull rod 214, and a second end of the pull rod 214 is pivotally connected with a first end of the first link 215. When the reducer 212 operates, the cam 213 is driven to rotate, the cam 213 can drive the pull rod 214 to move up and down, and the pull rod 214 drives the first end of the first link 215 to move up and down, so that the second end of the first link 215 drives the universal wheel 216 to move up and down, and the machine body 1 is lifted up and down.
With continued reference to fig. 3, the first beam 211 is also provided with a bracket 217 and a sheath 218. Further, the first link 215 also includes a pivot end between the first and second ends, by which the first link 215 is pivotally connected to the bracket 217. The pivotally connected first link 215 and the bracket 217 form a lever structure, and specifically, when the first end of the first link 215 moves upward, the second end of the first link 215 moves downward; as the first end of the first link 215 moves downward, the second end of the first link 215 moves upward. The support post of the universal wheel 216 passes through the sheath 218 and is slidably connected to the sheath 218 in the vertical direction.
It will be understood by those skilled in the art that the first beam 21, the second beam (not shown) and the third beam 231 are understood as carriers for mounting related components in a broad sense, and any other feasible structures may be adopted instead, and further, they may be fixedly connected to the bottom of the machine body 1, or may be integrated with the bottom of the machine body 1.
As shown in fig. 4, the first link 215 includes a first crossbar 2151 and a second crossbar 2152, and the stand 217 includes a first stand 2171 and a second stand 2172. The first bar 2151 and the first support 2171 form a first lever structure, and the second bar 2152 and the second support 2172 form a second lever structure.
As shown in fig. 5 and 6, a first end 21513 is formed on a first end 21511 of the first bar 2151, a second end 21514 is formed on a second end 21512 of the first bar 2151, and a first middle hole 21515 is formed in a portion of the first bar 2151 near the second end 21512 as a pivot end. A pin (not shown) is connected to the pull rod 214 through the first end hole 21513, thereby pivotally connecting the first bar 2151 to the pull rod 214. A pin (not shown) is inserted through the second end opening 21514 to engage the support post of the caster 216 to pivotally connect the first bar 2151 to the caster 216. A pin (not shown) is connected to the first bracket 2171 through the first central opening 21515 to pivotally connect the first bar 2151 to the first bracket 2171.
As shown in fig. 7 and 8, the third end 21521 of the second bar 2152 is provided with a third end hole 21523, the fourth end 21522 of the second bar 2152 is provided with a fourth end hole 21524, and a second middle hole 21525 serving as a pivot end is provided at a portion of the second bar 2152 near the fourth end 21524. A pin (not shown) is connected to the pull rod 214 through the third end hole 21523, thereby pivotally connecting the second bar 2152 to the pull rod 214. A pin (not shown) is inserted through the fourth end opening 21524 to engage the support post of the caster 216 to pivotally connect the second bar 2152 to the caster 216. A pin (not shown) is connected to the second bracket 2172 through the second central opening 21525 to pivotally connect the second bar 2152 to the second bracket 2172.
Referring again to fig. 5 and 6, since the first bar 2151 forms a lever structure with the first bracket 2171, the hole 21515 needs to be a circular hole and has a diameter slightly larger than the outer diameter of the shaft of the first bracket 2171. To ensure that the second end 21512 of the first bar 2151 moves in an arc, the supporting column of the universal wheel 216 moves vertically, and the second end hole 21514 is formed in a bar shape, and the length direction of the bar shape is the same as the length direction of the first bar 2151. Similarly, as shown in fig. 7 and 8, the second bar 2152 and the second bracket 2172 form a second lever structure, the second middle hole 21525 of the second bar 2152 is also circular, and the fourth end hole 21524 is also elongated, which is the same as the second end hole 21514 of the first bar 2151.
As shown in fig. 6 and 7, in order to prevent the two cross bars from being jammed with the pull rod 214 by extrusion, at least one of the first end hole 21513 and the third end hole 21523 of the two cross bars is required to be in a long strip shape, the length direction of the long strip shape is the same as the length direction of the cross bar where the long strip shape is located, the first end 21513 of the setting hole in this embodiment is in a long strip shape, and the third end hole 21523 is in a circular shape.
As shown in fig. 9 to 14, in order to prevent the washing machine from not staying at the highest or lowest position due to an excessive rotation amount of the cam 213 when lifting and lowering the washing machine, a travel switch (not shown) including a movable switch 219 and a riding wheel 210 is provided on the decelerator 212. The movable switch 219 is provided with an elastic key 2191 and three terminals. These three connection terminals are respectively referred to as a first connection terminal 2192, a second connection terminal 2193, and a third connection terminal 2194. When the elastic key 2191 is compressed and retracted, the movable switch 219 turns on the first connection terminal 2192 and the second connection terminal 2193 (as shown in fig. 13); when the elastic button 2191 is extended, the movable switch 219 turns on the first connection terminal 2192 and the third connection terminal 2194 (see fig. 14).
It should be noted that the up key 11 and the down key 12 in fig. 13 and 14 are normally open keys (or normally open switches), that is, the up key 11 and the down key 12 are closed when being pressed or operated.
As shown in fig. 9 to 12, the idler 210 is coaxially fixed with the output shaft of the decelerator 212 such that the idler 210 and the cam 213 can be rotated in synchronization, and are disposed on both sides of the decelerator 212 separately from the cam 213. Alternatively, the idler 210 and the cam 213 may be positioned on one side as desired by one skilled in the art. The idler 210 is formed of two semi-circles of different radii, which are designated as a first semi-circle 2101 and a second semi-circle 2102, respectively. The radius of the first semicircle 2101 is smaller than the radius of the second semicircle 2102 and there is a smooth transition between the first semicircle 2101 and the second semicircle 2102.
As shown in fig. 2, the second supporting unit 22 is different from the first supporting unit 21 only in the structure that a travel switch is provided on the first supporting unit 21, and the second supporting unit 22 is not provided with a travel switch.
It will be appreciated by those skilled in the art that the travel switch described above may also be provided on the second support unit 22, or on both support units simultaneously.
The lifting device for a washing machine of the present invention operates as follows.
It should be noted that, in the normal state of the washing machine, the universal wheel 216 is in a retracted state; the eccentric projection shaft 2131 is directly below the axis of the cam 213; the flexible key 2191 contacts the transition region of the first and second semicircles 2101 and 2102; the first connection terminal 2192 and the second connection terminal 2193 are turned on.
When the up button 11 is pressed, the dual output shaft motor 232 is connected to the power source, and the dual output shaft motor 232 starts to rotate. The dual output shaft motor 232 drives the cam 213 and the idler 210 to rotate synchronously through the reducer 212. As the idler 210 rotates, the resilient keys 2191 make sliding contact with the outer edge of the second semicircle 2102. The rotating cam 213 drives the pull rod 214 upward, and the upward moving pull rod 214 pulls the first end 21511 of the first bar 2151 and the third end 21521 of the second bar 2152 upward. As the first and third ends 21511, 21521 move upward, the second and fourth ends 21512, 21522 move downward and thus eject the universal wheel 216. When the riding wheel 210 rotates until the elastic button 2191 is disengaged from the second semicircle 2102, the elastic button 2191 extends out of the movable switch 219. The first connection terminal 2192 and the second connection terminal 2193 are disconnected, and the first connection terminal 2192 and the third connection terminal 2194 are connected. At this time, the dual output shaft motor 232 is powered off and stops rotating, the eccentric protruding shaft 2131 is located right above the axis of the cam 213, the length of the universal wheel 216 ejected is longest, and the height of the machine body 1 ejected is highest. At this time, the washing machine is supported by four universal wheels 216, and the washing machine can be moved by the four universal wheels 216 as the user pushes the washing machine.
When the down button 12 is pressed, the dual output shaft motor 232 is connected to the power source, and the dual output shaft motor 232 starts to rotate. The dual output shaft motor 232 drives the cam 213 and the idler 210 to rotate synchronously through the reducer 212. As the idler 210 rotates, the resilient key 2191 is in sliding contact with the outer edge of the first semicircle 2101. The rotating cam 213 drives the pull rod 214 downward, and the downward moving pull rod 214 drives the first end 21511 of the first bar 2151 and the third end 21521 of the second bar 2152 downward. As the first and third ends 21511, 21521 move downward, the second and fourth ends 21512, 21522 move upward and thus retract the universal wheel 216 into the body 1. When the idler 210 rotates to the transition between the flexible key 2191 and the first and second semicircles 2101 and 2102, the flexible key 2191 retracts into the movable switch 219. The first connection terminal 2192 and the third connection terminal 2194 are disconnected, and the first connection terminal 2192 and the second connection terminal 2193 are connected. At this time, the dual output shaft motor 232 is powered off and stops rotating, the eccentric protruding shaft 2131 is located right below the axis of the cam 213, the universal wheel 216 retracts into the machine body 1, and the machine body 1 abuts against the ground through the fixing bottom feet 13.
It should be noted that in the preferred embodiment of the present invention, dual output shaft motor 232 preferably has a power-off self-locking device (e.g., a motor brake), and when dual output shaft motor 232 is powered off, dual output shaft motor 232 can also maintain the current angle, and thus universal wheel 216 can be maintained at the current position. Therefore, when the washing machine is powered on, a user can push the universal wheel 216 out, the washing machine can be continuously pushed after the washing machine is powered off, and the washing machine can be further pushed to any place without a power supply by means of the universal wheel 216.
In summary, in the preferred embodiment of the present invention, the dual output shaft motor 232 drives the first supporting unit 21 and the second supporting unit 22 to move simultaneously, the reducer 212 drives the cam 213 to rotate, the rotating cam 213 drives the first end of the first connecting rod 215 to move via the pull rod 214, and the first end of the first connecting rod 215 drives the universal wheel 216 to move in the vertical direction by driving the second end of the first connecting rod 215, so as to raise or lower the machine body 1. Furthermore, the skilled person can also arrange the two support units 21, 22 shown in fig. 2 as any other number of support units, e.g. three or four support units driven simultaneously by one power unit 23, as desired.
Further, through the lever structure formed by the first connecting rod 215 and the bracket 217, the second end of the first connecting rod 215 is ejected out and the universal wheel 216 is retracted more easily and labor-saving, and meanwhile, the connecting rod structure is simple and easy to manufacture, and the production cost can be reduced.
Further, the decelerator 212 is provided with a movable switch 219 and a riding wheel 210, and the riding wheel 210 can control the operation of the movable switch 219 to turn on the up button 11 or the down button 12. When the ascending button 11 is connected to the power source and pressed, the ascending and descending device 2 jacks up the machine body 1 until the machine body 1 is lifted to the highest position. At this time, the riding wheel 210 rotates by half a turn to disconnect the up button 11 from the power supply, connect the down button 12 to the power supply, and stop the rotation of the dual output shaft motor 232. When the descending button 12 is powered on and pressed, the lifting device 2 lowers the machine body 1 until the fixed feet 13 at the bottom of the machine body 1 contact the ground, and the universal wheels 216 are completely retracted into the machine body 1. At this time, the riding wheel 210 rotates by half a turn to disconnect the descending button 12 from the power supply, connect the ascending button 11 to the power supply, and stop the rotation of the dual output shaft motor 232. Therefore, in the preferred embodiment of the present invention, the movable switch 219 on the decelerator 212 and the idler 210 make the ascending and descending of the body 1 more reliable, and prevent the cam 213 from rotating excessively and the body 1 from descending when ascending to the highest position. Meanwhile, the user can control the lifting device 2 to lift and lower the machine body 1 by operating the lifting key 11 and the lowering key 12, the operation is simpler, and the user experience is better.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (5)
1. A lifting device for carrying a supported apparatus, characterized in that the lifting device comprises a power unit and at least two support units;
each of the support units includes a support leg slidably provided in a vertical direction;
the power unit is in driving connection with each supporting unit respectively;
the power unit can drive all the supporting units simultaneously so as to drive the supporting feet to move in the vertical direction, so that the supported equipment is lifted or dropped;
wherein each of the support units further comprises a transmission device and a lever structure;
the transmission device is arranged at the bottom of the supported equipment, and the input end of the transmission device is in driving connection with the power unit;
the first end of the lever structure is connected with the output end of the transmission device, and the second end of the lever structure is connected with the supporting leg;
the transmission device can drive the second end of the lever structure to move through the first end of the lever structure, so that the supporting legs are driven to move in the vertical direction, and the supported equipment is lifted or dropped;
the transmission device comprises a speed reducer, the output end of the speed reducer is connected with the first end of the lever structure, and the input end of the speed reducer is connected with the power unit;
the transmission device further comprises a cam, and the speed reducer is connected with the first end of the lever structure through the cam;
wherein the lifting device comprises two support units;
wherein at least one of the two support units is provided with a travel switch,
when the supporting legs move downwards to enable the supported equipment to be separated from the ground, the travel switch enables the power unit to stop acting;
when the supporting legs move upwards to enable the supported equipment to be in contact with the ground, the travel switch enables the power unit to stop acting;
the travel switch comprises a movable switch and a riding wheel, the riding wheel can control the movable switch to act, so that an ascending key or a descending key is connected with a power supply, the movable switch is provided with an elastic key and three connecting terminals, the three connecting terminals are respectively marked as a first connecting terminal, a second connecting terminal and a third connecting terminal, when the elastic key is compressed and retracted, the movable switch is connected with the first connecting terminal and the second connecting terminal, so that the ascending key is connected with the power supply, and the descending key is disconnected with the power supply; when the elastic key extends out, the movable switch is connected with the first connecting terminal and the third connecting terminal, so that the ascending key is disconnected with the power supply, and the descending key is connected with the power supply;
the riding wheel is coaxially fixed with an output shaft of the speed reducer, so that the riding wheel and the cam can synchronously rotate and are respectively arranged on two sides or one side of the speed reducer together with the cam;
the riding wheel is composed of two semi-circles with different radiuses and is respectively marked as a first semi-circle and a second semi-circle, the radius of the first semi-circle is smaller than that of the second semi-circle, and the first semi-circle and the second semi-circle are in smooth transition.
2. The lifting device as claimed in claim 1, wherein the bottom of the support foot is provided with a travelling wheel.
3. The lifting device as claimed in claim 2, wherein the power unit comprises a motor, and the output end of the motor is respectively connected with the input end of the speed reducer of the two supporting units in a driving manner.
4. The lifting device as claimed in claim 3, wherein the motor is a dual output shaft motor, and each output shaft of the dual output shaft motor is connected with one speed reducer.
5. A washing machine comprising a machine body and a lifting device provided at the bottom of the machine body, characterized in that the lifting device is the lifting device of any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710817969.1A CN109487506B (en) | 2017-09-12 | 2017-09-12 | Lifting device and washing machine comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710817969.1A CN109487506B (en) | 2017-09-12 | 2017-09-12 | Lifting device and washing machine comprising same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109487506A CN109487506A (en) | 2019-03-19 |
| CN109487506B true CN109487506B (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710817969.1A Active CN109487506B (en) | 2017-09-12 | 2017-09-12 | Lifting device and washing machine comprising same |
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| Country | Link |
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| CN (1) | CN109487506B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113699757A (en) * | 2020-05-20 | 2021-11-26 | 青岛海尔洗衣机有限公司 | Lifting device and washing machine with same |
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| US4129018A (en) * | 1977-10-06 | 1978-12-12 | Whirlpool Corporation | One-piece agitator with clothes lifting cams |
| CN103017112A (en) * | 2011-09-26 | 2013-04-03 | 海洋王照明科技股份有限公司 | Lifting carriage and lighting device comprising same |
| CN203033710U (en) * | 2012-11-28 | 2013-07-03 | 总装备部工程设计研究总院 | Lifting platform and lifting structure thereof |
| CN104198266A (en) * | 2014-08-05 | 2014-12-10 | 中交国通公路工程技术有限公司 | Anti-scouring testing device for road pavement material |
| CN105624995A (en) * | 2016-03-04 | 2016-06-01 | 海信（山东）冰箱有限公司 | Washing machine easy to move |
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2017
- 2017-09-12 CN CN201710817969.1A patent/CN109487506B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4129018A (en) * | 1977-10-06 | 1978-12-12 | Whirlpool Corporation | One-piece agitator with clothes lifting cams |
| CN103017112A (en) * | 2011-09-26 | 2013-04-03 | 海洋王照明科技股份有限公司 | Lifting carriage and lighting device comprising same |
| CN203033710U (en) * | 2012-11-28 | 2013-07-03 | 总装备部工程设计研究总院 | Lifting platform and lifting structure thereof |
| CN104198266A (en) * | 2014-08-05 | 2014-12-10 | 中交国通公路工程技术有限公司 | Anti-scouring testing device for road pavement material |
| CN105624995A (en) * | 2016-03-04 | 2016-06-01 | 海信（山东）冰箱有限公司 | Washing machine easy to move |
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|---|---|
| CN109487506A (en) | 2019-03-19 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20220218 Address after: 400026 No.303, Block E, No.1 Gangcheng South Road, Jiangbei District, Chongqing Applicant after: Chongqing Haier Front-loading Washing Machine Co.,Ltd. Applicant after: Haier Smart Home Co., Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant before: QINGDAO HAIER DRUM WASHING MACHINE Co.,Ltd. |
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