CN108286166B

CN108286166B - Washing machine

Info

Publication number: CN108286166B
Application number: CN201810167237.7A
Authority: CN
Inventors: 李松辉; 刘文祥; 邢兴; 王其建; 刘振华; 张新新
Original assignee: Haixin (shandong) Refrigerator Co Ltd
Current assignee: Haixin (shandong) Refrigerator Co Ltd
Priority date: 2018-02-27
Filing date: 2018-02-27
Publication date: 2020-01-03
Anticipated expiration: 2038-02-27
Also published as: CN108286166A

Abstract

The invention discloses a washing machine, and relates to the technical field of washing machines. The automatic door cover opening device can realize automatic door cover opening and can accurately control the opening angle of the door cover. The washing machine comprises a shell, wherein a wave wheel washing drum is arranged in the shell, a door cover is hinged above a drum opening of the wave wheel washing drum, a locking piece is arranged between the door cover and the shell, when the door cover is closed, the locking piece can lock the door cover, the washing machine also comprises a resetting piece and a limiting structure, when the locking piece is unlocked, the restoring force of the resetting piece can drive the door cover to be opened, and the limiting structure can limit the opening angle of the door cover. The invention can be used for automatically opening the door cover of the pulsator washing machine.

Description

Washing machine

Technical Field

The invention relates to the technical field of washing machines, in particular to a washing machine.

Background

The existing pulsator washing machine is characterized in that a door cover of the pulsator washing machine is hinged to an upper enclosing frame of the washing machine, the pulsator washing machine is manually opened when being opened, some door covers are provided with glass visual windows for users to observe washing conditions in washing buckets conveniently, or the door covers are integrally made of glass, the weight of the door covers is heavier at the moment, the integral gravity of the door covers is overcome for the needs when the hands are opened, the uncovering operation is difficult, and after the pulsator washing machine is used for a long time, the door covers are easily dirty and difficult to clean.

In order to solve the problems, some washing machine door covers are connected with elastic opening pieces (such as springs) and can automatically flick the door body when the door lock is unlocked, but the door body with the structure is high in speed when flicked, easily hurts people, the opening angle of the door cover cannot be accurately controlled, and manual adjustment is needed if the opening angle is not proper.

Disclosure of Invention

Embodiments of the present invention provide a washing machine, which can automatically open a door and precisely control an opening angle of the door.

In order to achieve the above object, an embodiment of the present invention provides a washing machine, including a housing, a pulsator washing drum is disposed in the housing, a door cover is hinged above a drum opening of the pulsator washing drum, a locking member is disposed between the door cover and the housing, when the door cover is closed, the locking member can lock the door cover, and the washing machine further includes a reset member and a limiting structure, when the locking member is unlocked, a restoring force of the reset member can drive the door cover to open, and the limiting structure can limit an opening angle of the door cover.

According to the washing machine provided by the embodiment of the invention, when the door needs to be closed, the door cover is manually pressed, the restoring force of the reset piece is overcome, and the locking piece is locked; when the door needs to be opened, the locking piece can be unlocked, and the door cover bounces under the restoring force of the resetting piece, so that the door opening operation is labor-saving. And the limit structure can limit the opening angle of the door cover, so that the opening angle of the door cover is consistent every time, and manual adjustment is not needed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic cross-sectional view of a door of a washing machine according to an embodiment of the present invention;

FIG. 2 is an exploded view of a door of a washing machine according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a washing machine according to an embodiment of the present invention when a door is opened;

FIG. 4 is a schematic diagram illustrating a first position-limiting mechanism of the washing machine according to the embodiment of the present invention;

FIG. 5 is a schematic diagram illustrating a second position limiting mechanism of the washing machine according to the embodiment of the present invention;

FIG. 6 is a schematic diagram illustrating a position of a second position limiting mechanism of the washing machine according to the embodiment of the present invention before reaching a position limiting angle;

FIG. 7 is a schematic diagram of a second position limiting mechanism of the washing machine according to the embodiment of the present invention at a limiting angle;

FIG. 8 is a schematic diagram illustrating the position of a reed switch in the washing machine according to the embodiment of the present invention;

FIG. 9 is a schematic view of an external structure of a multi-tub washing machine according to an embodiment of the present invention;

FIG. 10 is a schematic view of the structure of the multi-tub washing machine with the door open;

FIG. 11 is a diagram illustrating a force analysis of a door of a washing machine according to an embodiment of the present invention when the door is at a hovering angle;

FIG. 12 is a diagram illustrating a comparison between a hovering angle and a limiting angle of a door of a washing machine according to an embodiment of the present invention;

fig. 13 is a schematic structural view of a reinforcing plate in the washing machine according to the embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

Referring to fig. 1 and 2, the washing machine provided by the embodiment of the invention includes a housing 1, a pulsator washing drum (not shown in the figure) is arranged in the housing 1, a door cover 2 is hinged above a drum opening of the pulsator washing drum, a locking member 3 is arranged between the door cover 2 and the housing 1, when the door cover 2 is closed, the locking member 3 can lock the door cover 2, and the washing machine further includes a reset member 4 and a limiting structure (not shown in the figure), when the locking member 3 is unlocked, the restoring force of the reset member 4 can drive the door cover 2 to be opened, and the limiting structure can limit an opening angle of the door cover 2.

According to the washing machine provided by the embodiment of the invention, when the door needs to be closed, the door cover 2 is manually pressed, the restoring force of the reset piece 4 is overcome, and the locking piece 3 is locked; when the door needs to be opened, the locking piece 3 can be unlocked, and the door cover 2 bounces under the restoring force of the restoring piece 4, so that the door opening operation is labor-saving. And the limit structure can limit the opening angle of the door cover 2, so that the opening angle of the door cover 2 is consistent every time, and manual adjustment is not needed.

Specifically, as shown in fig. 3, the reset member 4 may be a torsion spring, the torsion spring is disposed on the hinge shaft 21 of the door cover 2, the torsion spring includes a first elastic arm 41 and a second elastic arm 42, the first elastic arm 41 abuts against the door cover 2, the second elastic arm 42 abuts against the housing 1, when the door cover 2 is closed, the first elastic arm 41 and the second elastic arm 42 are close to each other to compress the energy storage, and when the locking member 3 is unlocked, the restoring force of the torsion spring drives the first elastic arm 41 to be opened in the direction away from the second elastic arm 42. When the door cover 2 is in a closed state, the torsion spring is in a compression energy storage state, the door cover 2 tends to be opened and has opening force, but the door lock is matched with the door hook, so that the door cover 2 is in a locking state; when the unlocking key is manually pressed to unlock the door lock, the door cover 2 starts to reversely open under the action of restoring force of the torsion spring until the gravity of the door cover 2 is balanced with the restoring force of the torsion spring, and the door cover 2 hovers at the position. The stopping angle can be adjusted by adjusting the force of the torsion spring to reach the required angle; if the torsion spring force is large enough, the door 2 can be fully opened at a time (i.e., the door 2 is flipped over more than 90 °). If the turning angle of the door cover 2 is smaller than 90 degrees and the door cover 2 needs to be opened continuously, the door cover 2 can be turned backwards manually by the handle of the door cover 2 until the turning angle of the door cover 2 exceeds 90 degrees, so that the door cover 2 falls under the action of gravity.

In an embodiment of the present invention, the limiting structure is implemented as shown in fig. 4, and the limiting structure includes a limiting arm 5, one end of the limiting arm 5 is fixed on the housing 1, and the other end extends to an opening track of the first elastic arm 41, and when the first elastic arm 41 is opened by a predetermined angle under a restoring force, the first elastic arm 41 is blocked by the limiting member. Therefore, the opening angle of the door cover 2 can be defined by defining the opening angle of the first elastic arm 41, the opening angle of the door cover 2 is consistent every time, and the structure is simple and easy to realize.

And the door cover 2 is provided with avoidance holes corresponding to the position of the limiting arm 5. Therefore, the interference with the limiting arm 5 can be prevented in the rotating process of the door cover 2, so that the limiting piece can block the first elastic arm 41.

In another embodiment of the present invention, the limiting structure includes a first limiting portion fixed on the door 2 and a second limiting portion fixed on the housing 1, and when the door 2 is opened to a predetermined angle, the first limiting portion and the second limiting portion are in fit and clamping connection to prevent the door 2 from rotating relative to the housing 1. Therefore, the opening angle of the door cover 2 can be accurately limited through the clamping structure, the opening angle of the door cover 2 is consistent every time, and the structure can enable the opening position of the door cover 2 to be more accurate.

Specifically, as shown in fig. 5-7, the hinged end of door closure 2 is equipped with hinged joint spare 22, be equipped with sleeve 23 on the hinged joint spare 22, sleeve 23 cover is located on the articulated shaft 21 of door closure 2, first spacing portion for set up in draw-in groove 6 on the surface of sleeve 23, the spacing portion of second is gag lever post 7, gag lever post 7 one end with casing 1 is fixed, the other end with the surface extrusion of sleeve 23 supports and leans on, works as when door closure 2 is opened to predetermineeing the angle, gag lever post 7 card is gone into in the draw-in groove 6. Wherein, the limiting rod 7 can use a spring steel wire which can be pressed on the outer surface of the sleeve 23 through a screw. The structure is accurate in limiting and small in occupied space.

Because before the door closure 2 closes and opens the suspension point, enclose the frame and can continuously receive the support counter-force of torsional spring, consequently can form certain wearing and tearing or deformation to enclosing the frame to influence outward appearance roughness and aesthetic measure. As shown in fig. 2, a reinforcing plate 8 is preferably provided on the housing 1 at a position abutting against the second elastic arm 42, and the second elastic arm 42 abuts against the reinforcing plate 8. Thereby, the structural strength at this location is greatly reinforced, and the reinforcing plate 8 can also be used to fix the damper and the hinge shaft 21, reducing the number of mounting parts. The reinforcing plate 8 is preferably made of a metal material.

In order to prevent the problems of water splashing, clothes flying and the like caused by the fact that a door cover 2 is opened due to misoperation of a person during the operation of the pulsator, as shown in fig. 8, a reed switch 11 can be arranged on a shell 1, a magnet 24 is arranged on the door cover 2, and when the distance between the reed switch 11 and the magnet 24 is greater than a preset distance, the reed switch 11 can send a signal for stopping the operation of the pulsator to a control system of the washing machine. Therefore, when the door cover 2 is opened due to misoperation, the control system can stop the running of the impeller in time, and the running safety of the washing machine is ensured.

The locking member 3 may be an electromagnetic lock, or a mechanical lock, and preferably, the locking member 3 is a push-and-eject type door lock switch. The push-spring type door lock switch is a mechanical lock, can be unlocked by pressing a push-spring button on the operation panel during operation, and has the advantages of simple and convenient operation, simple structure, low cost and high reliability.

When uncapping, torsional spring power is big more, and opening speed can be fast more, and it is not good to uncap experience, and easily the mistake hinders the people. As shown in fig. 2, it is preferable to add a damper 9 at the hinge shaft 21 of the door cover 2 for slowing down the door opening speed. The damper 9 can be a one-way damper or a two-way damper, the one-way damper is suitable for relatively small torsional spring force, the opening speed of the door cover 2 is low, the automatic opening angle is small, the damping effect is only achieved in the door closing process, the door closing process speed is optimized, and the user experience is improved. The two-way damping effect is better, can all play the buffering effect opening, closed process, can greatly promote experience effect.

The washing machine provided by the embodiment of the present invention may also be a multi-drum washing machine, and specifically, as shown in fig. 9 and 10, a drum washing tub 100 is provided in the housing 1, and two pulsator washing drums 200 are provided above the drum washing tub 100 side by side. The three washing cylinders can be respectively and independently washed and operated, and in order to ensure the operation convenience, each washing cylinder is independently provided with a door cover 2.

As shown in fig. 11, when the moment of the gravity of the door 2 to the hinge rotation point is balanced with the torsion spring bounce moment, that is, mgL-N is equal to 0, the angle θ 0 of the door 2 is the hovering critical point. For a plurality of door covers 2, the torque of the torsion spring and the system resistance are different, and the theta 0 fluctuates in a certain range, so that the complete consistency is difficult to ensure. Therefore, in order to ensure the opening angles of the two door covers 2 to be consistent, as shown in fig. 12, the limiting angle θ 1 of the limiting structure may be set to be smaller than θ 0, that is, at the limiting angle θ 1, the torsion spring has a part of torque reserve, and the door cover 2 tends to be turned upwards, so that the above error can be eliminated, and the opening angles of the two door covers 2 are ensured to be consistent.

Further, as shown in fig. 13, the reinforcement pieces on the housing 1 corresponding to the two pulsator washing drums 200 may be manufactured as an integral structure, and the shape of the limiting arm 5 on the reinforcement pieces may be precisely ensured to be consistent through one-time stamping, so as to ensure that the opening angles of the two door covers 2 are consistent.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A washing machine comprises a shell, wherein a wave wheel washing drum is arranged in the shell, a door cover is hinged above a drum opening of the wave wheel washing drum, a locking piece is arranged between the door cover and the shell, and when the door cover is closed, the locking piece can lock the door cover;

the limiting structure comprises a first limiting part fixed on the door cover and a second limiting part fixed on the shell, and when the door cover is opened to a preset angle, the first limiting part and the second limiting part are matched and clamped so as to prevent the door cover from rotating relative to the shell;

the hinged end of door closure is equipped with hinged joint spare, the last sleeve that is equipped with of hinged joint spare, the sleeve cover is located on the articulated shaft of door closure, first spacing portion for set up in draw-in groove on the telescopic surface, the spacing portion of second is the gag lever post, gag lever post one end with the casing is fixed, the other end with telescopic surface extrusion supports and leans on, works as when the door closure is opened to predetermineeing the angle, the gag lever post card is gone into in the draw-in groove.

2. The washing machine as claimed in claim 1, wherein the reset member is a torsion spring disposed on the hinge shaft of the door cover, the torsion spring includes a first elastic arm and a second elastic arm, the first elastic arm abuts against the door cover, the second elastic arm abuts against the housing, when the door cover is closed, the first elastic arm and the second elastic arm approach each other to compress the energy storage, and when the locking member is unlocked, the restoring force of the torsion spring drives the first elastic arm to open in a direction away from the second elastic arm.

3. The washing machine as claimed in claim 2, wherein the stopper structure includes a stopper arm having one end fixed to the housing and the other end extending to an opening trace of the first elastic arm, and the first elastic arm is stopped by the stopper arm when the first elastic arm is opened by a predetermined angle by restoring force.

4. The washing machine as claimed in claim 3, wherein the door cover has an avoiding hole corresponding to the position of the limiting member.

5. A washing machine as claimed in any one of claims 2 to 4 wherein a reinforcing plate is provided on the casing at a location against which the second resilient arm abuts, the second resilient arm abutting against the reinforcing plate.

6. A washing machine as claimed in any one of claims 1 to 4 wherein a reed switch is provided on the housing, a magnet is provided on the door, and the reed switch is capable of sending a signal to a control system of the washing machine to stop the operation of the pulsator when the distance between the reed switch and the magnet is greater than a predetermined distance.

7. A washing machine as claimed in any one of claims 1 to 4 wherein the locking member is a push-and-eject door lock switch.

8. A washing machine as claimed in any one of claims 1 to 4 wherein a damper is connected to the door, the damper being a one-way damper or a two-way damper.

9. The washing machine as claimed in any one of claims 1 to 4, wherein a roller washing barrel is further provided in the casing, and two pulsator washing barrels are provided side by side above the roller washing barrel.