Pulsator washing machine

Abstract

The embodiment of the utility model relates to the technical field of washing equipment, and provides a pulsator washing machine. The pulsator washing machine comprises a case, a door cover, a damper and a mounting piece. And the damper is arranged in a limiting groove limited by the case and the mounting piece. When the door cover rotates relative to the machine box, the damping piece can be pushed to move towards the damper body in the limiting groove. The side wall, facing the limiting groove, of a damping piece of the damper is provided with a protruding first limiting part, and the first limiting part is used for limiting the damping piece to move towards the side wall of the limiting groove. Or the side, facing the bottom wall of the limiting groove, of the damping piece is provided with a protruding second limiting part, and the second limiting part is used for limiting the damping piece to move towards the bottom wall of the limiting groove. Or when the damping part moves towards the shielding part, the guide inclined surface on the mounting part can be in contact with the guide cambered surface of the damping part. According to the pulsator washing machine, bending deformation of the damper when the damper is pushed can be improved, and the problems that the damping force of the damper is unstable, noise is generated, and the service life is shortened are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of washing equipment, in particular to a pulsator washing machine. BACKGROUND

[0002] The pulsator washing machine is a cleaning electric appliance which uses electric energy to produce mechanical action to wash clothes.

[0003] In order to meet the demand of people for large capacity of the pulsator washing machine, the volume of the drum assembly in the pulsator washing machine will be increased, so that the size of the machine box in which the drum assembly is arranged will also be made larger. With the increase of the size of the machine box, the size of the door cover which is rotationally connected to the top of the machine box will also be made larger. This will cause the door cover to be heavier, and it is easy to cause abnormal sound in the process of closing the door cover. In the related art, a damper is arranged at the top of the machine box, and the damper is pushed in the process of rotating and closing the door cover relative to the machine box. The damper which is pushed can provide damping force for the closing of the door cover, so as to realize the slow descending function of the door cover.

[0004] However, the damper is easy to be bent and deformed when being pushed, and problems such as unstable damping force are caused, which affects the slow descending function of the door cover. CONTENT OF THE UTILITY MODEL

[0005] The present application aims to at least solve the above problems.

[0006] The present application also aims to improve the service life of the damper.

[0007] The present application also aims to reduce the noise generated by the damper.

[0008] The purpose of the present application is not limited to the above-mentioned purposes, and those skilled in the art can understand other purposes not mentioned by the following description.

[0009] In a first aspect, the pulsator washing machine of the present application for achieving the above-mentioned purposes comprises a machine box. The top of the machine box has a throwing opening;

[0010] The pulsator washing machine comprises a drum assembly. The drum assembly is arranged in the machine box, and the drum assembly has a washing cavity. The drum opening of the drum assembly is communicated with the washing cavity and faces the throwing opening.

[0011] The pulsator washing machine comprises a door cover assembly. The door cover assembly comprises:

[0012] A mounting member is arranged at the top of the machine box and cooperates with the top of the machine box to define a limiting groove;

[0013] A door cover is rotationally connected to the mounting member, and the door cover can open or close the throwing opening when rotating relative to the mounting member.

[0014] The pulsator washing machine comprises a damper. The damper comprises:

[0015] The damper body is arranged in the limiting groove and is located at one end of the limiting groove away from the door cover;

[0016] The damping member is located in the limiting groove and is located at one end of the limiting groove close to the door cover, and the damping member is connected with the damper body; when the door cover rotates relative to the mounting member, the door cover can push the damping member to move in the limiting groove towards the damper body, so as to limit the rotation of the door cover.

[0017] The damping member has a protruding first limiting portion on the side wall facing the limiting groove.

[0018] The above technical solution has the following advantages or beneficial effects: since the first limiting portion is a protruding structure on the side wall of the damping member facing the limiting groove, if the damping member moves towards the side wall of the limiting groove under the pushing of the door cover during the movement of the damping member towards the damper body, the first limiting portion will contact the side wall of the limiting groove first, so as to limit the non-protruding part of the side wall of the damping member from contacting the side wall of the limiting groove, thereby relatively reducing the contact area between the damping member and the side wall of the limiting groove and reducing the frictional resistance between the damping member and the side wall of the limiting groove. In this way, during the closing process of the door cover, the damping force is mainly provided by the damper to slow down the door cover, and the jerk feeling caused by the contact between the damping member and the side wall of the limiting groove during the closing process of the door cover is reduced. When the first limiting portion contacts the side wall of the limiting groove, the movement of the damping member towards the side wall of the limiting groove is limited. When the movement of the damping member towards the side wall of the limiting groove is limited, the bending deformation of the damping member towards the side wall of the limiting groove is small, which can improve the bending deformation of the damper in the width direction of the limiting groove, so as to avoid the instability of the damping force, the generation of noise, the reduction of service life and other adverse problems of the damper when it is pushed, and to enhance the stability of the slow closing function of the door cover. At the same time, the service life of the damper can be improved, and the noise generated by the damper can be reduced.

[0019] Compared with the way of increasing the size of the damping member in the width direction of the groove, the present application embodiment only needs to reduce the gap between the first limiting portion of the damping member and the side wall of the limiting groove, so as to limit the movement of the damping member towards the side wall of the limiting groove. Moreover, since the first limiting portion is a local protrusion on the damping member, the gap between the first limiting portion and the side wall of the limiting groove is easy to control, and the damping member can be effectively limited from moving towards the side wall of the limiting groove.

[0020] In some embodiments, the first limiting portion has a first guide structure at one end facing the damper body, and the first guide structure has a first guide surface facing one side of the side wall of the limiting groove.

[0021] In the direction of the damping member towards the damper body, the gap between the first guide surface and the side wall of the limiting groove increases.

[0022] The above technical solution has the following advantages or beneficial effects: by limiting the gap between the first guide surface and the side wall of the limiting groove, the first limiting part has a larger gap between the first guide surface and the side wall of the limiting groove, so as to reduce the contact area between the first limiting part and the side wall of the limiting groove when the first limiting part moves towards the side wall of the limiting groove. In this way, when the damping member moves towards the side wall of the limiting groove under the push of the door cover, the remaining position of the first limiting part facing the side wall of the limiting groove will preferentially contact the side wall of the limiting groove, so as to limit the movement of the damping member in the direction towards the side wall of the limiting groove when moving towards the damper body, thereby improving the bending deformation of the damper in the groove width direction of the limiting groove when the damper is pushed to move towards the damper body.

[0023] Moreover, since the first limiting part has a larger gap between the first guide surface and the side wall of the limiting groove, when the first limiting part contacts the side wall of the limiting groove at the remaining position, the first guide surface will also guide the first limiting part to move away from the side wall of the limiting groove, so as to avoid the first limiting part being stuck in the side wall of the limiting groove, and ensure smooth movement of the damping member towards the damper body.

[0024] In some embodiments, the first guide surface is an arc surface or an inclined surface.

[0025] The above technical solution has the following advantages or beneficial effects: when the first guide surface is an arc surface or an inclined surface, the gap between the first guide surface and the side wall of the limiting groove increases in the direction of the damping member towards the damper body.

[0026] In some embodiments, the first limiting part further has a second guide structure at one end away from the damper body, and the second guide structure has a second guide surface facing one side of the side wall of the limiting groove;

[0027] In the direction of the damper body to the damping member, the gap between the second guide surface and the side wall of the limiting groove increases.

[0028] The above technical solution has the following advantages or beneficial effects: by limiting the gap between the second guide surface and the side wall of the limiting groove, the first limiting part also has a larger gap between the second guide surface and the side wall of the limiting groove, so as to reduce the contact area between the first limiting part and the side wall of the limiting groove when the first limiting part moves towards the side wall of the limiting groove. In this way, when the damping member moves away from the damper body under the push of the damping medium and moves towards the side wall of the limiting groove, the remaining position of the second limiting part facing the side wall of the limiting groove will preferentially contact the side wall of the limiting groove, so as to limit the movement of the damping member in the direction towards the side wall of the limiting groove when moving away from the damper body, thereby improving the bending deformation of the damper in the groove width direction of the limiting groove when the damper moves away from the damper body.

[0029] And, since the first limiting part has a larger gap between the second guide surface and the side wall of the limiting groove, when the first limiting part is in contact with the side wall of the limiting groove at the remaining positions, the second guide surface will also guide the first limiting part to move in a direction away from the side wall of the limiting groove, to avoid the first limiting part being stuck in the side wall of the limiting groove, and to ensure smooth movement of the damping member towards the damper body.

[0030] In some embodiments, the side wall of the limiting groove includes a first side wall and a second side wall, the top of the cabinet defines the first side wall, and the mounting member defines part of the second side wall.

[0031] The damping member is provided with a first limiting part on each of the two side walls opposite the first side wall and the second side wall.

[0032] The above technical solution has the following advantages or beneficial effects: by providing the first limiting part on each of the two side walls opposite the first side wall and the second side wall of the damping member, the damping member can be prevented from being bent and deformed when moving towards any side wall of the limiting groove in the slot width direction under the push of the door cover or the damping medium, so that the damping member has better bending resistance in the slot width direction of the limiting groove.

[0033] In some embodiments, at least two first limiting parts are provided on the same side wall of the damping member in the direction of the damping member towards the damper body.

[0034] The above technical solution has the following advantages or beneficial effects: compared to the case where one first limiting part is provided on the same side wall of the damping member, by providing at least two first limiting parts at intervals, the first limiting part can limit the movement of the damping member towards the side wall of the limiting groove when moving to different positions, and the limiting effect of the first limiting part on the movement of the damping member can be enhanced.

[0035] In some embodiments, the mounting member includes:

[0036] The shielding part is shielded from the slot opening of the limiting groove.

[0037] The damping member is configured to have an overlapping area with the shielding part in the height direction of the cabinet when not being pushed by the door cover; and the damping member has a guide arc surface at a position corresponding to the overlapping area.

[0038] The shielding part has a guide inclined surface facing the damping member, and at least part of the guide inclined surface is in the overlapping area; the guide inclined surface is configured to be in contact with at least part of the guide arc surface when the damping member moves towards the shielding part, so as to limit the movement of the damping member towards the shielding part.

[0039] The above technical scheme has the following advantages or beneficial effects: through the arrangement of the guide inclined surface and the guide arc surface, the movement of the damping member towards the side of the shielding portion is limited, and the bending deformation of the damping member towards the side of the shielding portion in the depth direction of the limiting groove is small, so as to improve the bending deformation of the damper towards the shielding portion in the depth direction of the limiting groove. In this way, the bending deformation of the damper towards the side of the shielding portion in the width direction and the depth direction of the limiting groove can be effectively controlled, so as to further enhance the stability of the slow descending function of the door cover, and at the same time, the service life of the damper can be further improved, and the noise generated by the damper can be reduced.

[0040] Moreover, due to the arrangement of the guide inclined surface and the guide arc surface, when the guide inclined surface contacts at least part of the guide arc surface, the guide inclined surface guides the damping member to move away from the side of the shielding portion, so as to enable the damping member to continue to move towards the damper body.

[0041] In addition, due to the arrangement of the guide arc surface, the edge of the damping member adjacent to the side of the shielding portion is relatively smooth, so as to prevent the damping member from being stuck on the shielding portion when the damping member continues to move towards the damper body beyond the guide inclined surface.

[0042] In some embodiments, the size of the overlapping area in the direction of the damping member towards the damper body is D2, and D2>1mm.

[0043] The above technical scheme has the following advantages or beneficial effects: by limiting D2, the limiting effect of the shielding portion on the movement of the damping member towards the side of the shielding portion is also enhanced, and the control degree of the bending deformation of the damper towards the side of the shielding portion in the depth direction is also improved synchronously.

[0044] In some embodiments, the included angle between the guide inclined surface and the side of the shielding portion away from the slot is a, and a<45°.

[0045] The above technical scheme has the following advantages or beneficial effects: by limiting a, the slope of the guide inclined surface is small, the guide inclined surface is more gentle, the damping member has a good guiding effect, and the guide arc surface of the damping member has good smoothness when moving on the guide inclined surface.

[0046] In some embodiments, the damping member has a protruding second limiting portion on the side towards the bottom wall of the limiting groove, and a gap is formed between the second limiting portion and the bottom wall of the limiting groove, and the second limiting portion is used to limit the movement of the damping member towards the bottom wall of the limiting groove.

[0047] The technical scheme has the following advantages or beneficial effects: since the second limiting part is a protruding structure on the damping member, and the second limiting part is arranged, the gap between the position of the damping member at the second limiting part and the bottom wall of the limiting groove is reduced. In this way, when the damping member moves towards the limiting groove under the pushing of the door cover, the second limiting part will be in contact with the side wall of the limiting groove in priority to the rest of the damping member, so as to limit the movement of the damping member towards the bottom wall of the limiting groove. When the movement of the damping member towards the bottom wall of the limiting groove is limited, the bending deformation of the damping member towards the bottom wall of the limiting groove is small, and the bending deformation of the damper towards the bottom wall of the limiting groove in the depth direction of the limiting groove is improved. In this way, the bending deformation of the damper towards the bottom wall of the limiting groove in the width direction and the depth direction of the limiting groove can be effectively controlled, so as to further enhance the stability of the slow descending function of the door cover, and further improve the service life of the damper and reduce the noise generated by the damper.

[0048] In some embodiments, the minimum gap between the second limiting part and the bottom wall of the limiting groove is D4, and D4 < 0.3 mm.

[0049] The technical scheme has the following advantages or beneficial effects: when D4 is in the above range, the smooth movement of the damping member towards or away from the damper body is ensured, and D4 is as small as possible to prevent the damping member from being bent and deformed when moving towards the bottom wall of the limiting groove under the pushing of the door cover or the damping medium, so as to enhance the stability of the damping force, the service life of the damper, and reduce the noise generated by the damping member.

[0050] In some embodiments, the second limiting part has a third guide structure at the end towards the damper body, and the third guide structure has a third guide surface facing one side of the bottom wall of the limiting groove.

[0051] In the direction of the damping member towards the damper body, the gap between the third guide surface and the side wall of the limiting groove increases.

[0052] The technical scheme has the following advantages or beneficial effects: by limiting the gap between the third guide surface and the bottom wall of the limiting groove, the second limiting part has a larger gap between the third guide surface and the bottom wall of the limiting groove, so as to reduce the contact area between the second limiting part and the bottom wall of the limiting groove when the second limiting part moves towards the bottom wall of the limiting groove. In this way, when the damping member moves towards the bottom wall of the limiting groove under the pushing of the door cover, the rest of the second limiting part facing the bottom wall of the limiting groove will be in contact with the bottom wall of the limiting groove in priority, so as to limit the movement of the damping member towards the damper body in the direction towards the bottom wall of the limiting groove, thereby improving the bending deformation of the damper towards the bottom wall of the limiting groove when the damper moves towards the damper body.

[0053] And, since the second limiting portion has a larger gap between the third guide surface and the bottom wall of the limiting groove, when the second limiting portion is in contact with the bottom wall of the limiting groove at the remaining positions, the third guide surface also guides the second limiting portion to move in a direction away from the bottom wall of the limiting groove, so as to avoid the second limiting portion being stuck in the bottom wall of the limiting groove, and ensure smooth movement of the damping member towards the damper body.

[0054] In some embodiments, the second guide surface is an arc surface or an inclined surface.

[0055] The above technical solution has the following advantages or beneficial effects: by limiting the shape of the second guide surface, the gap between the third guide surface and the bottom wall of the limiting groove in the direction of the damping member towards the damper body is increased.

[0056] In some embodiments, the second limiting portion further comprises a fourth guide structure at the end away from the damper body, the fourth guide structure has a fourth guide surface on the side facing the bottom wall of the limiting groove;

[0057] In the direction from the damper body to the damping member, the gap between the fourth guide surface and the bottom wall of the limiting groove is increased.

[0058] The above technical solution has the following advantages or beneficial effects: by limiting the gap between the third guide surface and the side wall of the limiting groove, the second limiting portion has a larger gap between the fourth guide surface and the bottom wall of the limiting groove, so as to reduce the contact area between the second limiting portion and the bottom wall of the limiting groove when the second limiting portion moves towards the bottom wall of the limiting groove. In this way, when the damping member is pushed by the damping medium to move away from the damper body and move towards the bottom wall of the limiting groove, the second limiting portion will preferentially contact the bottom wall of the limiting groove at the remaining positions facing the bottom wall of the limiting groove, so as to limit the movement of the damping member in the direction towards the bottom wall of the limiting groove when moving away from the damper body, thereby improving the bending deformation of the damper in the direction towards the bottom wall of the limiting groove when moving away from the damper body.

[0059] And, the fourth guide surface also guides the second limiting portion to move in a direction away from the bottom wall of the limiting groove, so as to avoid the second limiting portion being stuck in the bottom wall of the limiting groove, and ensure smooth movement of the damping member away from the damper body.

[0060] In some embodiments, the mounting member comprises:

[0061] The blocking portion is shielded from the slot opening of the limiting groove.

[0062] The smallest gap between the damping member and the blocking portion, and between the damping member and the bottom wall of the limiting groove, is less than 0.3mm.

[0063] The above technical scheme has the following advantages or beneficial effects: when the minimum gap between the damping member and the shielding portion and the bottom wall of the limiting groove is limited, the movement of the damping member in the direction of the bottom wall of the limiting groove and the direction of the shielding portion is also limited, thereby improving the bending deformation of the damper in the groove depth direction of the limiting groove when the damper is pushed, further enhancing the stability of the slow descent function of the door cover, and further improving the service life of the damper and reducing the noise generated by the damper.

[0064] In a second aspect, a pulsator washing machine for achieving the above-mentioned purpose comprises a cabinet. The top of the cabinet has a drop opening.

[0065] The pulsator washing machine comprises a drum assembly. The drum assembly is arranged in the cabinet, and the drum assembly has a washing cavity. A drum opening of the drum assembly is in communication with the washing cavity and faces the drop opening.

[0066] The pulsator washing machine comprises a door cover assembly. The door cover assembly comprises:

[0067] A mounting member is arranged on the top of the cabinet and cooperates with the top of the cabinet to define a limiting groove. The mounting member has a shielding portion that shields the groove opening of the limiting groove.

[0068] A door cover is rotatably connected to the mounting member to open or close the drop opening when rotating relative to the mounting member.

[0069] The pulsator washing machine comprises a damper. The damper comprises:

[0070] A damper body is arranged in the limiting groove, and the damper body is located at one end of the limiting groove away from the door cover.

[0071] A damping member is located in the limiting groove and is located at one end of the limiting groove close to the door cover. The damping member is connected to the damper body. When the door cover rotates relative to the mounting member, the door cover pushes the damping member to move in the limiting groove towards the damper body to limit the rotation of the door cover.

[0072] The damping member is configured to have an overlapping area with the shielding portion in the height direction of the cabinet when not being pushed by the door cover. The damping member has a guide arc surface at a position corresponding to the overlapping area. The shielding portion has a guide inclined surface facing the damping member, and at least part of the guide inclined surface is in the overlapping area. The guide inclined surface is configured to contact at least part of the guide arc surface when the damping member moves towards the shielding portion to limit the movement of the damping member towards the shielding portion. The included angle between the guide inclined surface and the side of the shielding portion away from the groove opening is α, and α < 45°.

[0073] The above technical scheme has the following advantages or beneficial effects: through the arrangement of the guide inclined surface and the guide arc surface, the movement of the damping member towards the side of the shielding portion is limited, the bending deformation of the damping member towards the side of the shielding portion in the depth direction of the limiting groove is small, the bending deformation of the damper towards the side of the shielding portion in the depth direction of the limiting groove is improved, the stability of the slow descent function of the door cover is enhanced, and the service life of the damper and the noise generated by the damper are improved.

[0074] Moreover, due to the arrangement of the guide inclined surface and the guide arc surface, when the guide inclined surface is at least partially in contact with the guide arc surface, the guide inclined surface guides the damping member to move towards the side away from the shielding portion, so that the damping member continues to move towards the damper body. Due to the arrangement of the guide arc surface, the edge of the damping member adjacent to the side of the shielding portion is relatively smooth, so as to prevent the damping member from being stuck on the shielding portion when the damping member continues to move towards the damper body beyond the guide inclined surface.

[0075] In addition, by limiting α, the inclination of the guide inclined surface is small, the guide inclined surface is more gentle, the damping member has a better guiding effect, and the damping member has better smoothness when moving on the guide inclined surface.

[0076] In a third aspect, a pulsator washing machine for achieving the above-mentioned purpose comprises a cabinet. The top of the cabinet has a drop port.

[0077] The pulsator washing machine comprises a drum assembly. The drum assembly is arranged in the cabinet, and the drum assembly has a washing cavity. A drum port of the drum assembly is in communication with the washing cavity and faces the drop port.

[0078] The pulsator washing machine comprises a door cover assembly. The door cover assembly comprises:

[0079] A mounting member is arranged on the top of the cabinet and cooperates with the top of the cabinet to define a limiting groove;

[0080] A door cover is rotationally connected to the mounting member to open or close the drop port when the door cover rotates relative to the mounting member.

[0081] The pulsator washing machine comprises a damper. The damper comprises:

[0082] A damper body is arranged in the limiting groove, and the damper body is located at one end of the limiting groove away from the door cover;

[0083] A damping member is located in the limiting groove and is located at one end of the limiting groove close to the door cover. The damping member is connected to the damper body. The door cover is configured to push the damping member to move in the limiting groove towards the damper body when the door cover rotates relative to the mounting member, so as to limit the rotation of the door cover.

[0084] The damping member has a protruding second limiting portion towards one side of the bottom wall of the limiting groove.

[0085] The above technical solution has the following advantages or beneficial effects: since the second limiting portion is a protruding structure on the bottom wall of the limiting groove facing the damping member, if the damping member moves towards the bottom wall of the limiting groove under the push of the door cover during the movement of the damping member towards the damper body, the second limiting portion will contact the bottom wall of the limiting groove first to limit the contact between the non-protruding part of the damping member side wall and the bottom wall of the limiting groove, thereby reducing the contact area between the damping member and the bottom wall of the limiting groove and reducing the frictional resistance between the damping member and the bottom wall of the limiting groove. Thus, during the closing process of the door body, the damping force is mainly provided by the damper to make the door body descend slowly, reducing the jerk feeling caused by the contact between the damping member and the bottom wall of the limiting groove during the closing process of the door body. When the second limiting portion contacts the bottom wall of the limiting groove, the movement of the damping member towards the bottom wall of the limiting groove is limited. When the movement of the damping member towards the bottom wall of the limiting groove is limited, the bending deformation of the damping member towards the bottom wall of the limiting groove is small, which can improve the bending deformation of the damper towards the bottom wall of the limiting groove in the depth direction of the limiting groove, thereby enhancing the stability of the slow descending function of the door cover, improving the service life of the damper, and reducing the noise generated by the damper.

[0086] In addition, when D4 is in the above range, on the basis of ensuring smooth movement of the damping member towards or away from the damper body, D4 can be as small as possible to prevent the damping member from being bent and deformed when moving towards the bottom wall of the limiting groove under the push of the door cover or the damping medium, thereby enhancing the stability of the damping force, the service life of the damper, and reducing the noise generated by the damping member.

[0087] In some embodiments, the second limiting portion has a third guide structure at the end towards the damper body, and the side of the third guide structure facing the bottom wall of the limiting groove has a third guide surface.

[0088] In the direction of the damping member towards the damper body, the gap between the third guide surface and the side wall of the limiting groove increases.

[0089] The above technical solution has the following advantages or beneficial effects: by limiting the gap between the third guide surface and the side wall of the limiting groove, the second limiting portion can have a larger gap between the third guide surface and the bottom wall of the limiting groove, thereby reducing the contact area between the second limiting portion and the bottom wall of the limiting groove when the second limiting portion moves towards the bottom wall of the limiting groove. Thus, when the damping member moves towards the bottom wall of the limiting groove under the push of the door cover, the remaining positions of the second limiting portion facing the bottom wall of the limiting groove will contact the bottom wall of the limiting groove first to limit the movement of the damping member in the direction towards the bottom wall of the limiting groove when the damping member moves towards the damper body, thereby improving the bending deformation of the damper in the direction towards the bottom wall of the limiting groove when the damper moves towards the damper body.

[0090] And, since the second limiting portion has a larger gap between the third guide surface and the bottom wall of the limiting groove, when the second limiting portion is in contact with the bottom wall of the limiting groove at the remaining positions, the third guide surface also guides the second limiting portion to move in a direction away from the bottom wall of the limiting groove, so as to avoid the second limiting portion being stuck in the bottom wall of the limiting groove, and ensure smooth movement of the damping member towards the damper body.

[0091] In some embodiments, the second limiting portion is further provided with a fourth guide structure at an end away from the damper body, and the fourth guide structure has a fourth guide surface facing one side of the bottom wall of the limiting groove;

[0092] In the direction from the damper body to the damping member, the gap between the fourth guide surface and the bottom wall of the limiting groove increases.

[0093] The above technical solution has the following advantages or beneficial effects: by limiting the gap between the third guide surface and the side wall of the limiting groove, the second limiting portion can have a larger gap between the fourth guide surface and the bottom wall of the limiting groove, so as to reduce the contact area between the second limiting portion and the bottom wall of the limiting groove when the second limiting portion moves towards the bottom wall of the limiting groove. In this way, when the damping member is pushed by the damping medium to move away from the damper body and move towards the bottom wall of the limiting groove, the second limiting portion will preferentially contact the bottom wall of the limiting groove at the remaining positions facing the bottom wall of the limiting groove, so as to limit the movement of the damping member in the direction towards the bottom wall of the limiting groove when moving away from the damper body, thereby improving the bending deformation of the damper in the direction towards the bottom wall of the limiting groove when moving away from the damper body.

[0094] And, the fourth guide surface also guides the second limiting portion to move in a direction away from the bottom wall of the limiting groove, so as to avoid the second limiting portion being stuck in the bottom wall of the limiting groove, and ensure smooth movement of the damping member away from the damper body. BRIEF DESCRIPTION OF DRAWINGS

[0095] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0096] Figure 1 is a structural schematic diagram of a pulsator washing machine provided by the embodiments of the present application;

[0097] Figure 2 is Figure 1 is an enlarged view of the pulsator washing machine at A;

[0098] Figure 3 isFigure 2 Structure schematic diagram of the middle wave drum washing machine in another perspective view;

[0099] Figure 4 Schematic diagram of installation of the damper and the mounting piece provided by the embodiment of the present application on the top of the cabinet;

[0100] Figure 5 Exploded view of installation of the damper provided by the embodiment of the present application on the top of the cabinet;

[0101] Figure 6 Schematic diagram of installation of the damper provided by the embodiment of the present application on the top of the cabinet;

[0102] Figure 7 Structure schematic diagram of a damper provided by the embodiment of the present application in a first perspective view;

[0103] Figure 8 Partial schematic diagram of a damper provided by the embodiment of the present application in a limiting groove;

[0104] Figure 9 For Figure 7 Enlarged view at B;

[0105] Figure 10 For Figure 4 Sectional view of the damper in the cabinet in C-C direction;

[0106] Figure 11 For Figure 10 Enlarged view at D;

[0107] Figure 12 For Figure 11 Enlarged view at E;

[0108] Figure 13 For Figure 12 Angle schematic diagram of the guide inclined surface;

[0109] Figure 14 For Figure 11 Partial schematic diagram of the damping piece and the limiting groove;

[0110] Figure 15 For Figure 11 Structure schematic diagram of the damping piece and the bottom wall of the limiting groove;

[0111] Figure 16 Partial schematic diagram of a damper provided by the embodiment of the present application in a second perspective view.

[0112] Reference signs:

[0113] 10-cabinet; 11-cabinet body; 12-enclosure; 121-throwing opening; 13-rear end face; 14-left side wall; 15-right side wall;

[0114] 20 - washing cavity;

[0115] 30 - mounting member; 31 - mounting portion; 32 - connecting portion; 33 - shielding portion; 331 - guide inclined surface;

[0116] 40 - door cover; 41 - abutting portion;

[0117] 50 - damper; 51 - cylinder; 52 - damping member; 521 - first limiting portion; 5211 - first guide structure; 5212 - first guide surface; 5213 - second guide structure; 5214 - second guide surface; 5215 - intermediate position; 522 - second limiting portion; 5221 - third guide structure; 5222 - third guide surface; 5223 - fourth guide structure; 5224 - fourth guide surface; 523 - guide arc surface; 53 - connecting member;

[0118] 60 - limiting groove; 61 - first side wall; 62 - second side wall; 63 - bottom wall. DETAILED DESCRIPTION

[0119] To make the objectives, technical solutions, and superiorities of the embodiments of the present application clearer, the following will be combined with the accompanying drawings for the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall into the protection scope of the present application.

[0120] The embodiments of the present application provide a pulsator washing machine.

[0121] Figure 1 A structure schematic diagram of a pulsator washing machine is shown. The following will be combined with the accompanying drawings for the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Figure 1 The structure of the pulsator washing machine is further described.

[0122] Referring to Figure 1 shown, the pulsator washing machine comprises a machine box 10. The top of the machine box 10 has a feeding opening 121. The feeding opening 121 is used for feeding clothes. The machine box 10 comprises a box body 11 and a surrounding frame 12. The surrounding frame 12 is arranged on the top of the box body 11, and the surrounding frame 12 has the feeding opening 121.

[0123] In some embodiments, the pulsator washing machine further comprises a drum assembly. The drum assembly is arranged in the machine box 10, and the drum assembly has a washing cavity 20. The drum opening of the drum assembly is communicated with the washing cavity 20 and faces the feeding opening 121, so that the clothes fed through the feeding opening 121 can enter the washing cavity 20 for cleaning.

[0124] The cylinder assembly includes an outer cylinder. The outer cylinder is located inside the housing 11, and the opening of the outer cylinder faces the loading / unloading port.

[0125] The drum assembly includes an inner drum. The inner drum is rotatably disposed within the outer drum, and the opening of the inner drum can also face the garment loading / unloading opening. The opening of the inner drum communicates with the washing chamber 20, so that the opening of the drum assembly communicates with the washing chamber 20. The inner drum has a washing chamber 20. During the washing process, the inner drum can rotate relative to the outer drum to wash the clothes inside the washing chamber 20.

[0126] The inner cylinder has multiple connecting holes on its wall. These connecting holes connect the washing chamber 20 to the interior of the outer cylinder, allowing liquid in the washing chamber 20 to flow into the outer cylinder and then be discharged from the outer cylinder after washing.

[0127] See Figure 1 As shown, in some embodiments, the pulsator washing machine also includes a door cover assembly. The door cover assembly is located on the top of the casing 10 and is capable of opening or closing the loading port 121. When the door cover assembly opens the loading port 121, it facilitates the user in loading clothes into the loading port 121. When the door cover assembly closes the loading port 121, it covers the loading port 121 to enhance the safety of the pulsator washing machine during operation.

[0128] Figure 2 It shows Figure 1 Enlarged view of the mid-range pulsator washing machine at point A. Figure 3 for Figure 2 A structural diagram of a mid-sized pulsator washing machine from another perspective. Figure 4 This is a schematic diagram showing the installation of the damper 50 on the top of the chassis 10 according to an embodiment of this application. Figure 5 An exploded view of the damper 50 mounted on top of the chassis 10 is shown. Figure 6 A schematic diagram showing the installation of the damper 50 on the top of the chassis 10 is provided. Figures 4 to 6 The structure of the top of the pulsator washing machine 10 is hidden. For example, Figure 3 and Figure 4 The door cover 40 in the door cover assembly is hidden in the middle.

[0129] See below. Figures 2 to 6 The structure of a pulsator washing machine will be further explained.

[0130] See Figures 2 to 5As shown, in some embodiments, the door cover assembly comprises a mounting member 30. The mounting member 30 is arranged on the top of the cabinet 10 and cooperates with the top of the cabinet 10 to define a limiting groove 60. That is, the mounting member 30 cooperates with the surrounding frame 12 to define the limiting groove 60. For example, the mounting member 30 can comprise a mounting portion 31 arranged on the top of the cabinet 10 and cooperates with the top of the cabinet 10 to define the limiting groove 60. The surrounding frame 12 has a groove on the side away from the box body 11, the mounting portion 31 is arranged in the groove, and the mounting portion 31 and the portion of the surrounding frame 12 provided with the groove can jointly enclose the limiting groove 60.

[0131] As shown in Figure 5 and Figure 6 As shown, the surrounding frame 12 also has a mounting groove (not labeled) on the side away from the box body 11, and the mounting portion 31 can be mounted in the mounting groove and connected with the surrounding frame 12 by fasteners or the like to arrange the mounting portion 31 on the top of the cabinet 10 while reducing the mounting height of the mounting member 30 on the surrounding frame 12. The fastener can be a connecting structure such as a screw or a bolt.

[0132] Alternatively, the mounting member 30 can also be arranged on the top of the cabinet 10 by other means. For example, the mounting member 30 can be arranged on the top of the cabinet 10 by clamping.

[0133] As shown in Figure 2 and Figure 3 As shown, the door cover assembly further comprises a door cover 40. The door cover 40 is rotationally connected with the mounting member 30. The door cover 40 can open or close the drop opening 121 when it rotates relative to the mounting member 30, thereby realizing the function of opening or closing the drop opening 121 of the door cover assembly.

[0134] In some embodiments, the mounting member 30 can comprise a connecting portion 32. The connecting portion 32 can be arranged on the side of the mounting portion 31 away from the surrounding frame 12. The door cover 40 has a avoiding groove at a position corresponding to the connecting portion 32, the connecting portion 32 is arranged in the avoiding groove, and the two ends of the connecting portion 32 can be directly or indirectly rotationally mounted on the groove wall of the avoiding groove through other adapters, thereby realizing the rotational connection between the door cover 40 and the mounting member 30. The door cover 40 can rotate around the connecting portion 32 when it rotates relative to the mounting member 30, thereby opening or closing the drop opening 121.

[0135] To meet the demand of people for large capacity of the pulsator washing machine, the size of the cabinet 10 and the door cover 40 will also be larger. This will result in a heavier door cover 40, and if the closing speed of the door cover 40 is too fast during the closing process, it will impact the top of the cabinet 10 and easily cause abnormal noise, affecting the user experience.

[0136] To improve the user experience, as shown in Figures 3 to 6As shown, the door cover assembly further comprises a damper 50. The damper 50 is installed in the limiting groove 60, so that the door cover 40 can push the damper 50 during the process of rotating closing relative to the cabinet 10. The pushed damper 50 can provide damping force for the closing of the door cover 40, so as to reduce the closing speed of the door cover 40, realize the slow descending function of the door cover 40, so as to avoid the abnormal sound generated during the closing process of the door cover 40, and improve the user experience.

[0137] For the convenience of users, see Figure 3 As shown, the door cover 40 is arranged on one side of the top of the cabinet 10 adjacent to the rear end surface 13 of the cabinet 10. Therefore, the limiting groove 60 is also arranged on one side of the top of the cabinet 10 adjacent to the rear end surface 13 of the cabinet 10, so that the damper 50 can be pushed by the door cover 40 during the rotation of the door cover 40 relative to the cabinet 10, and the slow descending function of the door cover 40 is realized.

[0138] It should be noted that when the door cover 40 is arranged on one side of the top of the cabinet 10 adjacent to the left side wall 14 or the right side wall 15, if the slow descending function of the door cover 40 needs to be realized, the limiting groove 60 will also be arranged on one side of the top of the cabinet 10 adjacent to the left side wall 14 or the right side wall 15 of the cabinet 10, so that the damper 50 can be installed on the top of the cabinet 10 and be pushed by the door cover 40 during the rotation of the door cover 40.

[0139] Hereinafter, the structure of the pulsator washing machine will be further described by taking the limiting groove 60 arranged on one side of the top of the cabinet 10 adjacent to the rear end surface 13 of the cabinet 10 as an example.

[0140] For the convenience of users, see Figures 4 to 6 As shown, in some embodiments, the damper 50 comprises a damper body. The damper body is arranged in the limiting groove 60, and the damper body is located at one end of the limiting groove 60 away from the door cover 40. For example, the damper body can be clamped in the limiting groove 60, so as to fix the damper body in the limiting groove 60.

[0141] The damper 50 further comprises a damping piece 52. The damping piece 52 is located in the limiting groove 60, and the damping piece 52 is located at one end of the limiting groove 60 close to the door cover 40, and the damping piece 52 is connected with the damper body. The door cover 40 is configured to push the damping piece 52 to move in the limiting groove 60 towards the damper body when the door cover 40 rotates relative to the mounting piece 30, so as to limit the rotation of the door cover 40. Specifically, when the damping piece 52 moves in the limiting groove 60 towards the damper body, the rotation of the door cover 40 can be limited by the damping piece 52.

[0142] Through the limitation of the rotation of the door cover 40 by the damping piece 52, the speed of the door cover 40 during the closing process can be reduced, the slow descending function of the door cover 40 is realized, so as to avoid the abnormal sound generated during the closing process of the door cover 40, and improve the user experience.

[0143] For the convenience of users, see Figure 4As shown, when the mounting portion 31 is arranged on the top of the cabinet 10, the mounting portion 31 can also extend towards the direction of the limiting groove 60 to shield part of the opening of the limiting groove 60. At this time, the mounting portion 31 can also limit the damper body in the limiting groove 60. For example, the side of the mounting portion 31 towards the damper body can have a clamping groove, and part of the damper body can be arranged in the clamping groove, so that the mounting portion 31 can limit the damper body in the limiting groove 60.

[0144] Referring to Figures 4 to 6 As shown, the damper body can include a cylinder 51 and a damping medium. The damping medium is arranged in the cylinder 51.

[0145] The damper 50 also includes a connecting piece 53. One end of the connecting piece 53 is arranged in the cylinder 51, and the other end is connected with the damping piece 52. When the damping piece 52 is pushed, the damping piece 52 can move towards the cylinder 51 and push the connecting piece 53, so that the connecting piece 53 can move with the damping piece 52 to compress the damping medium.

[0146] After the damping medium is compressed, a damping force is generated, which is transmitted to the damping piece 52 through the connecting piece 53, so that the damping piece 52 transmits the damping force to the door cover 40. The damping force acts as resistance to the continued rotation of the door cover 40, which can limit the rotational closing of the door cover 40 to reduce the closing speed of the door cover 40 and achieve the slow descent function of the door cover 40.

[0147] Referring to Figure 2 and Figure 4 As shown, in some embodiments, the door cover 40 can have an abutting portion 41 on the side towards the top of the cabinet 10. When the door cover 40 is rotated relative to the cabinet 10 and opened to the maximum position, the abutting portion 41 is separated from the damping piece 52.

[0148] During the process of the rotational closing of the door cover 40 relative to the cabinet 10, the abutting portion 41 can be rotated into the limiting groove 60 and contact the end of the damping piece 52 away from the damper body during the rotation of the door cover 40.

[0149] With the continued closing of the door cover 40, the abutting portion 41 will push the damping piece 52 and the connecting piece 53 to move in the limiting groove 60 towards the cylinder 51 to compress the damping medium. The damping force generated by the damping medium is transmitted to the abutting portion 41 through the connecting piece 53 and the damping piece 52. The damping force acts as resistance to the continued rotation of the abutting portion 41, which can limit the rotational closing of the door cover 40 to reduce the closing speed of the door cover 40 during the closing process and achieve the slow descent function of the door cover 40.

[0150] In some embodiments, when the door cover 40 is rotated by a preset angle from the opening to the maximum position towards the side of the drop opening 121, the abutting portion 41 can be in contact with the damping member 52 away from the end of the damper body. That is, in the initial stage of the door cover 40 being rotated from the opening to the maximum position towards the side of the drop opening 121, the abutting portion 41 is in contact with the damping member 52, so as to realize the slow closing function of the door cover 40. The impeller washing machine uses other damping members 52 to provide damping force in the initial stage of the door cover 40 being rotated from the opening to the maximum position towards the side of the drop opening 121, so as to effectively reduce the closing speed of the door cover 40 before the abutting portion 41 is in contact with the damping member 52, so as to ensure the damping effect of the damper 50, and at the same time, the service life of the damper 50 is improved.

[0151] The preset angle can be 25° to 33°, etc. For example, the preset angle can be 28°, 29°, 30°, etc.

[0152] When the damper 50 is pushed, the damper 50 is prone to bending deformation under the pushing of the abutting portion 41, so as to cause problems such as unstable damping force, which affects the slow closing function of the door cover 40. Moreover, when the damper 50 is bent and deformed, noise is generated, and the service life of the damper 50 is shortened, etc.

[0153] Therefore, the bending deformation of the damper 50 needs to be controlled.

[0154] The researchers found that the reason why the damper 50 is bent and deformed under the pushing of the abutting portion 41 is that the damper 50 moves towards the slot width or slot depth direction of the limiting slot 60 under the pushing of the abutting portion 41. For example, when the damper 50 moves towards the slot width direction of the limiting slot 60 under the pushing of the abutting portion 41, the damper 50 will be bent and deformed along the slot width direction. For example, when the damper 50 moves towards the slot depth direction of the limiting slot 60 under the pushing of the abutting portion 41, the damper 50 will be bent and deformed along the slot depth direction.

[0155] When the movement of the damper 50 towards the slot width and slot depth direction of the limiting slot 60 under the pushing of the abutting portion 41 is limited, the bending deformation of the damper 50 can be improved.

[0156] Therefore, the impeller washing machine provided by the embodiments of the present application improves the structure of at least one of the damping member 52 and the mounting member 30, so as to limit the movement of the damper 50 towards at least one of the slot width and slot depth direction of the limiting slot 60 under the pushing of the abutting portion 41, so as to improve the bending deformation of the damper 50, thereby reducing the bending deformation of the damper 50, avoiding problems such as unstable damping force, noise generation, service life shortening, etc. of the damper 50, enhancing the stability of the slow closing function of the door cover 40, and at the same time, improving the service life of the damper 50 and reducing the noise generated by the damper 50.

[0157] It should be noted that the slot width direction and the slot depth direction of the limiting slot 60 are perpendicular to the moving direction of the damping member 52. The moving direction of the damping member 52 refers to the direction in which the damping member 52 moves towards the damper body, which can be seen as the X direction. The slot width direction of the limiting slot 60 can be seen as the Y direction. The slot depth direction of the limiting slot 60 can be seen as the Z direction.

[0158] The improvement of the damping member 52 will be further described below in combination with the drawings and examples.

[0159] Figure 7 A structural schematic view of a damper 50 is shown in a first perspective view, Figure 8 A partial view of a damper 50 in a limiting slot 60 is shown.

[0160] Referring to Figure 7 and Figure 8 As shown, the damping member 52 has a protruding first limiting portion 521 on the side wall facing the limiting slot 60. For example, the first limiting portion 521 can be arranged on the side wall of the damping member 52 along the slot width direction of the limiting slot 60, so that the first limiting portion 521 faces the side wall of the limiting slot 60. There is a gap between the first limiting portion 521 and the side wall of the limiting slot 60. The first limiting portion 521 is used to limit the movement of the damping member 52 towards the side wall of the limiting slot 60.

[0161] On the basis of the unchanged slot width of the limiting slot 60, since the first limiting portion 521 is a protruding structure on the side wall facing the limiting slot 60 of the damping member 52, by arranging the first limiting portion 521, the gap between the position of the first limiting portion 521 and the side wall of the limiting slot 60 can be reduced. In this way, during the movement of the damping member 52 towards the damper body, if the damping member 52 is still moved towards the side wall of the limiting slot 60 under the pushing of the door cover 40, the first limiting portion 521 will be in contact with the side wall of the limiting slot 60 in priority to the rest of the damping member 52, so as to limit the movement of the damping member 52 towards the side wall of the limiting slot 60. At the same time, when the first limiting portion 521 is in contact with the side wall of the limiting slot 60 in priority to the rest of the damping member 52, the non-protruding part of the side wall of the damping member 52 will also be limited from contacting the side wall of the limiting slot 60, thereby relatively reducing the contact area between the damping member 52 and the side wall of the limiting slot 60 and reducing the frictional resistance between the damping member 52 and the side wall of the limiting slot 60. In this way, during the closing process of the door cover 40, the damping force is mainly provided by the damper 50 to make the door cover 40 descend slowly, and the jerk feeling caused by the contact between the damping member 52 and the side wall of the limiting slot 60 during the closing process of the door cover 40 is reduced.

[0162] When the movement of the damping member 52 towards the side wall of the limiting groove 60 is limited, the bending deformation of the damping member 52 towards the side wall of the limiting groove 60 is small, the bending deformation of the damper 50 in the groove width direction of the limiting groove 60 can be improved, so as to avoid the bending deformation of the damper 50 towards the side wall of the limiting groove 60, to avoid the problems such as unstable damping force, noise, short service life and the like of the damper 50 when being pushed, to enhance the stability of the slow descent function of the door cover 40, and to improve the service life of the damper 50 and reduce the noise generated by the damper 50.

[0163] On the basis that the groove width of the limiting groove 60 is unchanged, the size of the damping member 52 in the groove width direction is increased, so as to reduce the gap between the damping member 52 and the side wall of the limiting groove 60, and limit the movement of the damping member 52 towards the side wall of the limiting groove 60. However, when the damping member 52 moves in the limiting groove 60 towards the damper body, if the damping member 52 deviates towards the side wall of the limiting groove 60, the entire surface of the damping member 52 facing the side wall of the limiting groove 60 will be in contact with the side wall of the limiting groove 60, so that the area of the damping member 52 in contact with the side wall of the limiting groove 60 and generating friction is large, the damping member 52 is more likely to be stuck on the groove wall of the limiting groove 60, which is not conducive to the smooth movement of the damping member 52 in the limiting groove 60 towards the damper body, and the door cover 40 will have a sense of stagnation during rotation. Moreover, due to the influence of the machining tolerance, the gap between the damping member 52 and the side wall of the limiting groove 60 will be large or small. If the damping member 52 moves towards the damper body under the pushing of the door cover 40, it will also move towards the side wall of the limiting groove 60, which will cause the damping member 52 to be in contact with and stuck on the groove wall of the limiting groove 60 in the area where the gap between the damping member 52 and the side wall of the limiting groove 60 is large, and affect the movement of the damping member 52 towards the damper body.

[0164] Compared with the way of increasing the size of the damping member 52 in the groove width direction, the first limiting part 521 is provided in the embodiment, and only the gap between the damping member 52 at the position of the first limiting part 521 and the side wall of the limiting groove 60 needs to be reduced, so as to limit the movement of the damping member 52 towards the side wall of the limiting groove 60. Moreover, since the first limiting part 521 is a local protrusion on the damping member 52, the gap between the first limiting part 521 and the side wall of the limiting groove 60 is easy to control, and the damping member 52 can be effectively limited from moving towards the side wall of the limiting groove 60.

[0165] The minimum gap between the first limiting part 521 and the side wall of the limiting groove 60 is D1. Wherein, D1 < 0.25 mm. For example, D1 can be 0.24 mm, 0.23 mm, 0.20 mm, 0.16 mm, 0.13 mm, etc.

[0166] If D1≥0.25mm, although the first limiting portion 521 is provided, the damping member 52 will still be bent and deformed when moving towards or away from the damper body under the pushing of the door cover 40 or the damping medium.

[0167] Therefore, when D1<0.25mm, the embodiment of the present application can make D1 as small as possible on the basis of ensuring smooth movement of the damping member 52 towards or away from the damper body, so as to prevent the damping member 52 from being bent and deformed when moving towards the side wall of the limiting groove 60 under the pushing of the door cover 40 or the damping medium, enhance the stability of the damping force, the service life of the damper 50, and reduce the noise generated by the damping member 52.

[0168] It should be noted that along the groove width direction of the limiting groove 60, the first limiting portion 521 has a point closest to the side wall of the limiting groove 60 on the side facing the side wall of the limiting groove 60. The gap between the point and the side wall of the limiting groove 60 can be regarded as the minimum gap D1. Therefore, measuring the gap between the point and the side wall of the limiting groove 60 facing the side wall of the limiting groove 60 in the groove width direction of the limiting groove 60 is the minimum gap D1.

[0169] In some embodiments, the first limiting portion 521 can be a rectangular block. At this time, the side of the first limiting portion 521 facing the side wall of the limiting groove 60 can be a plane, and the end of the first limiting portion 521 towards the damper body will be a right-angle structure.

[0170] If the first limiting portion 521 is a rectangular block, the end of the first limiting portion 521 towards the damper body has obvious edges. In this way, when the damping member 52 moves towards the side wall of the limiting groove 60 under the pushing of the door cover 40, the edges of the first limiting portion 521 are easy to be stuck on the side wall of the limiting groove 60, affecting the movement of the damping member 52 towards the damper body.

[0171] Figure 9 An enlarged view is shown at B. Figure 7 An enlarged view is shown at B.

[0172] To this end, referring to Figure 8 and Figure 9 shown, in other embodiments, the end of the first limiting portion 521 towards the damper body can have a first guide structure 5211. The side of the first guide structure 5211 facing the side wall of the limiting groove 60 has a first guide surface 5212. Along the direction of the damping member 52 towards the damper body, the gap between the first guide surface 5212 and the side wall of the limiting groove 60 increases. For example, along the direction of the damping member 52 towards the damper body, the gap between the first guide surface 5212 and the side wall of the limiting groove 60 can gradually increase.

[0173] By the setting of the first guide structure 5211, the shape of the first limiting portion 521 on the side facing the side wall of the limiting groove 60 can be changed, so that the first limiting portion 521 has a larger gap between the first guide surface 5212 and the side wall of the limiting groove 60, so as to reduce the contact area between the first limiting portion 521 and the side wall of the limiting groove 60 when the first limiting portion 521 moves towards the side wall of the limiting groove 60.

[0174] In this way, when the damping member 52 moves towards the side wall of the limiting groove 60 under the pushing of the door cover 40, the remaining positions of the first limiting portion 521 facing the side wall of the limiting groove 60 will preferentially contact the side wall of the limiting groove 60, so as to limit the movement of the damping member 52 in the direction towards the side wall of the limiting groove 60 when the damping member 52 moves towards the damper body, thereby improving the bending deformation of the damping member 50 in the groove width direction of the limiting groove 60 when the damping member 50 is pushed to move towards the damper body. The remaining positions of the first limiting portion 521 facing the side wall of the limiting groove 60 include the positions of the first limiting portion 521 other than the first guide surface 5212.

[0175] In addition, since the first limiting portion 521 has a larger gap between the first guide surface 5212 and the side wall of the limiting groove 60, when the first limiting portion 521 contacts the side wall of the limiting groove 60 at the remaining positions, the first guide surface 5212 will also guide the first limiting portion 521 to move in the direction away from the side wall of the limiting groove 60, so as to avoid the first limiting portion 521 being stuck in the side wall of the limiting groove 60, and ensure the smooth movement of the damping member 52 towards the damper body when the damping member 52 is pushed by the door cover 40.

[0176] Referring to FIGS. 5 and 6, Figure 8 and Figure 9 In some embodiments, the first guide surface 5212 can be an arc surface, so as to increase the gap between the first guide surface 5212 and the side wall of the limiting groove 60 in the direction of the damping member 52 towards the damper body. When the arc surface is arc-shapedly connected with the remaining positions of the first limiting portion 521 facing the side wall of the limiting groove 60, the first limiting portion 521 can also avoid having edges on the side facing the side wall of the limiting groove 60, which affects the movement of the damping member 52 towards the damper body.

[0177] In some embodiments, the first guide surface 5212 can also be an inclined surface, which can also increase the gap between the first guide surface 5212 and the side wall of the limiting groove 60 in the direction of the damping member 52 towards the damper body. When the inclined surface is arc-shapedly connected with the remaining positions of the first limiting portion 521 facing the side wall of the limiting groove 60, the first limiting portion 521 can also avoid having edges on the side facing the side wall of the limiting groove 60, which affects the movement of the damping member 52 towards the damper body.

[0178] It should be noted that when the door cover 40 rotates relative to the cabinet 10 to open the drop opening 121, the abutting portion 41 of the door cover 40 will be separated from the damping member 52. At this time, the damping member 52 will move away from the damper body under the pushing of the damping medium to reset the damping member 52 to provide damping force for the next time the door cover 40 rotates relative to the cabinet 10 to close the drop opening 121. Similarly, when the damping member 52 moves away from the damper body under the pushing of the damping medium, it is also possible to move towards the side wall of the limiting groove 60, causing the damping member 52 to be bent and deformed.

[0179] To this end, as shown in FIGS. Figure 8 and Figure 9 In some embodiments, when the first limiting portion 521 has the first guide structure 5211, the first limiting portion 521 can also be provided with a second guide structure 5213 at one end away from the damper body. The second guide structure 5213 has a second guide surface 5214 facing one side of the side wall of the limiting groove 60, and the gap between the second guide surface 5214 and the side wall of the limiting groove 60 increases in the direction from the damper body to the damping member 52. For example, the gap between the second guide surface 5214 and the side wall of the limiting groove 60 can also gradually increase in the direction from the damper body to the damping member 52.

[0180] By providing the second guide structure 5211, the shape of the first limiting portion 521 on the side facing the side wall of the limiting groove 60 can be further changed, so that the first limiting portion 521 also has a larger gap between the second guide surface 5214 and the side wall of the limiting groove 60, to reduce the contact area between the second limiting portion 522 and the side wall of the limiting groove 60 when the first limiting portion 521 moves towards the side wall of the limiting groove 60.

[0181] In this way, when the damping member 52 moves away from the damper body under the pushing of the damping medium and moves towards the side wall of the limiting groove 60, the remaining positions of the first limiting portion 521 facing the side wall of the limiting groove 60 will preferentially contact the side wall of the limiting groove 60 to limit the movement of the damping member 52 in the direction towards the side wall of the limiting groove 60 when it moves away from the damper body, thereby improving the bending deformation of the damper 50 in the groove width direction of the limiting groove 60 when it is pushed to move away from the damper body.

[0182] Similarly, since the first limiting portion 521 has a larger gap between the second guide surface 5214 and the side wall of the limiting groove 60, when the first limiting portion 521 contacts the side wall of the limiting groove 60 at the remaining positions, the second guide surface 5214 will also guide the first limiting portion 521 to move away from the side wall of the limiting groove 60 to avoid the first limiting portion 521 being stuck in the side wall of the limiting groove 60, ensuring smooth movement of the damping member 52 away from the damper body when it is pushed.

[0183] In some embodiments, the second guide surface 5214 may also be an arc-shaped surface or an inclined surface to ensure that the gap between the second guide surface 5214 and the side wall of the limiting groove 60 is increased along the direction from the damper body to the damping member 52. For details, please refer to the relevant description of the first guide surface 5212 above, which will not be repeated here.

[0184] In some embodiments, the second guide structure 5213 and the first guide structure 5211 can be symmetrical structures on the first limiting portion 521 to simplify the structure of the first limiting portion 521 and the damper 50.

[0185] Since the first guide structure 5211 and the second guide structure 5213 are provided at both ends of the first limiting part 521, the minimum gap D1 between the first limiting part 521 and the side wall of the limiting groove 60 can be increased at both ends of the first limiting part 521 and the side wall of the limiting groove 60 without affecting the minimum gap D1 between the first limiting part 521 and the side wall of the limiting groove 60, so as to ensure the smooth movement of the damping member 52 away from or towards the damper body. At this time, the middle part 5215 has a point closest to the side wall of the limiting groove 60 it faces. Along the groove width direction of the limiting groove 60, the gap between this point on the middle part 5215 and the side wall of the limiting groove 60 can be regarded as the minimum gap D1.

[0186] See Figure 8 and Figure 9 As shown, in some embodiments, the sidewalls of the limiting groove 60 may include a first sidewall 61 and a second sidewall 62 disposed opposite to each other in the groove width direction. The top of the chassis 10 may define the first sidewall 61. The mounting member 30 may define a portion of the second sidewall 62. The damping member 52 has a first limiting portion 521 on each of the two sidewalls opposite to the first sidewall 61 and the second sidewall 62.

[0187] When the damping member 52 moves toward the first sidewall 61 under the push of the door cover 40, the first limiting part 521 can restrict the movement of the damping member 52 toward the first sidewall 61, thereby improving the bending deformation of the damping member 52 in the direction toward the first sidewall 61. When the damping member 52 moves toward the second sidewall 62 under the push of the door cover 40, the first limiting part 521 can restrict the movement of the damping member 52 toward the second sidewall 62, thereby improving the bending deformation of the damping member 52 in the direction toward the second sidewall 62.

[0188] Therefore, by setting the first limiting part 521 on the two side walls opposite to the first side wall 61 and the second side wall 62, the damping member 52 can be prevented from bending and deforming when it moves toward any side wall of the limiting groove 60 in the groove width direction under the push of the door cover 40 or the damping medium, so that the damping member 52 has a better anti-bending deformation effect in the groove width direction of the limiting groove 60 when it is pushed.

[0189] See Figure 8 and Figure 9 As shown, in some embodiments, at least two first limiting portions 521 may be provided at intervals on the same sidewall of the damping member 52 along the direction of the damping member 52 toward the damper body. Figure 8 and Figure 9 In this embodiment, two first limiting portions 521 are shown on the same side wall of the damping member 52, which does not constitute a limitation on the number of first limiting portions 521. For example, in some embodiments, if there is sufficient space on the damping member 52, three first limiting portions 521 may be provided at intervals on the same side wall of the damping member 52.

[0190] It should be noted that in some embodiments, a first limiting part 521 may also be provided on the same side wall of the damping member 52.

[0191] Compared to the case where a first limiting part 521 is provided on the same side wall of the damping member 52, by providing at least two first limiting parts 521 at intervals, when the damping member 52 moves toward or away from the damper body, the first limiting part 521 can restrict the movement of the damping member 52 toward the side wall of the limiting groove 60 at different positions, thereby enhancing the limiting effect of the first limiting part 521 on the movement of the damping member 52.

[0192] The improvements to the damping component 52 and the mounting component 30 will be further described below with reference to the accompanying drawings and embodiments.

[0193] Figure 10 It shows Figure 4 Cross-sectional view of the intermediate damper 50 in the CC direction of the chassis 10. Figure 11 It shows Figure 10 Enlarged view at point D.

[0194] See Figure 10 and Figure 11 As shown, in some embodiments, the mounting member 30 may further include a blocking portion 33. The blocking portion 33 blocks the opening of the limiting groove 60. Thus, when the damping member 52 moves within the limiting groove 60 to the position of the blocking portion 33, the blocking portion 33 will block the top of the damping member 52.

[0195] Figure 12 for Figure 11 Enlarged view at point E.

[0196] See Figure 12As shown, the damping member 52 is configured to have an overlapping area with the blocking part 33 in the height direction of the chassis 10 when not pushed by the door cover 40. The height direction of the chassis 10 is parallel to the Z direction. The position of the damping member 52 in the limiting groove 60 when not pushed by the door cover 40 can be regarded as the initial position. Before the door cover 40 rotates from the open to the maximum position toward the delivery port 121 to the preset angle mentioned above, the position of the damping member 52 in the limiting groove 60 can be regarded as the initial position.

[0197] If the damping member 52 does not coincide with the blocking part 33 when it is not pushed by the door cover 40, and the damping member 52 moves towards the damper body under the push of the door cover 40 and bends and deforms before reaching the blocking part 33, the damping member 52 is likely to get stuck on the end face of the blocking part 33 facing the damping member 52, making it impossible for the damping member 52 to continue moving towards the damper body.

[0198] Due to the overlapping area, the damping member 52 can be blocked by the blocking part 33 before it moves toward the damper body. This restricts the damping member 52 from bending and deforming as it moves toward the blocking part 33 in the groove depth direction, preventing the damping member 52 from getting stuck on the end face of the blocking part 33 toward the damping member 52.

[0199] Therefore, by setting the overlapping area, the movement of the damping member 52 toward the blocking part 33 can be restricted in this embodiment. The bending deformation of the damping member 52 toward the blocking part 33 in the groove depth direction of the limiting groove 60 is small, which can improve the bending deformation of the damper 50 toward the blocking part 33 in the groove depth direction of the limiting groove 60, so that the damping member 52 can continue to move toward the damper body, thereby enhancing the stability of the door cover 40's slow-closing function. At the same time, it can further improve the service life of the damper 50 and reduce the noise generated by the damper 50.

[0200] It should be noted that when the damping member 52 moves toward the blocking part 33 and comes into contact with the blocking part 33, the blocking part 33 will apply a force to the damping member 52. This force can cause the damping member 52 to move away from the blocking part 33, thereby restricting the movement of the damping member 52 toward the blocking part 33.

[0201] Specifically, when the shielding part 33 is abutted by the damping member 52, the shielding part 33 can undergo elastic deformation. Compared to the shielding part 33 not undergoing elastic deformation, when the shielding part 33 undergoes elastic deformation, the service life of the mounting member 30 can be extended.

[0202] Although the overlapping region is provided to prevent the damping member 52 from being stuck on the end surface of the blocking portion 33 on the side of the damping member 52, when the damping member 52 moves toward the blocking portion 33 within the blocking range of the blocking portion 33, the damping member 52 can still be stuck on the blocking portion 33 if the damping member 52 moves toward the blocking portion 33 under the pushing of the door cover 40.

[0203] To this end, referring to FIG. 5, in some embodiments, the damping member 52 has a guide arc surface 523 at a position corresponding to the overlapping region. The blocking portion 33 has a guide inclined surface 331 facing the damping member 52, and at least a portion of the guide inclined surface 331 is within the overlapping region. Moreover, the guide inclined surface 331 is configured to be capable of contacting at least a portion of the guide arc surface 523 when the damping member 52 moves toward the blocking portion 33, so as to limit the movement of the damping member 52 toward the blocking portion 33, thereby limiting the movement of the damping member 52 toward the blocking portion 33, reducing the bending deformation of the damping member 52 toward the blocking portion 33 in the slot depth direction of the limiting slot 60, and improving the bending deformation of the damper 50 toward the blocking portion 33 in the slot depth direction of the limiting slot 60 when the damper 50 is pushed. Figure 12

[0204] Moreover, due to the provision of the guide arc surface 523 and the guide inclined surface 331, when the guide inclined surface 331 contacts at least a portion of the guide arc surface 523, the guide inclined surface 331 guides the damping member 52 to move away from the blocking portion 33, so as to enable the damping member 52 to continue to move toward the damper body.

[0205] In addition, due to the provision of the guide arc surface 523, the edge of the damping member 52 adjacent to the side of the blocking portion 33 can be rounded, so as to prevent the damping member 52 from being stuck on the blocking portion 33 when the damping member 52 continues to move toward the damper body beyond the guide inclined surface 331.

[0206] It should be noted that, in some embodiments, when the damping member 52 has the first limiting portion 521 and the damping member 52 has the overlapping region with the blocking portion 33 when the damping member 52 is not pushed by the door cover 40, the bending deformation of the damper 50 in the slot width direction of the limiting slot 60 can be improved, and the bending deformation of the damper 50 toward the blocking portion 33 in the slot depth direction of the limiting slot 60 can also be improved, so that the bending deformation of the damper 50 toward the blocking portion 33 in the slot width direction and the slot depth direction can be effectively controlled, to further enhance the stability of the slow descent function of the door cover 40, and to further improve the service life of the damper 50 and reduce the noise generated by the damper 50.

[0207] Referring to FIG. 5, in some embodiments, the damping member 52 has a first limiting portion 521 at a position corresponding to the overlapping region. The blocking portion 33 has a limiting groove 60, and the limiting groove 60 has a slot width direction and a slot depth direction. Moreover, the first limiting portion 521 is configured to be capable of being located within the limiting groove 60 when the damping member 52 moves toward the blocking portion 33 within the blocking range of the blocking portion 33, so as to limit the movement of the damping member 52 toward the blocking portion 33 in the slot width direction of the limiting groove 60, thereby limiting the movement of the damping member 52 toward the blocking portion 33 in the slot width direction of the limiting groove 60, reducing the bending deformation of the damping member 52 toward the blocking portion 33 in the slot width direction of the limiting groove 60, and improving the bending deformation of the damper 50 in the slot width direction of the limiting groove 60 when the damper 50 is pushed. Figure 12 ​As shown, in some embodiments, the size of the coincident region is D2 along the damping member 52 towards the damper body, and D2>1mm. For example, the size of the coincident region can be 1.5mm, 1.8mm, 2mm, etc.

[0208] When D2≤1mm, D2 is small, the limiting effect of the blocking portion 33 on the movement of the damping member 52 towards the blocking portion 33 side is limited, and the control strength of the bending deformation of the damper 50 in the groove depth direction towards the blocking portion 33 side is also limited.

[0209] In contrast, in the present application, when D2>1mm, D2 is large, the limiting effect of the blocking portion 33 on the movement of the damping member 52 towards the blocking portion 33 side is also enhanced, and the control strength of the bending deformation of the damper 50 in the groove depth direction towards the blocking portion 33 side is also improved synchronously.

[0210] Figure 13 As shown Figure 12 The angle diagram of the guide inclined surface 331 is shown.

[0211] Referring to Figure 13 As shown, in addition to D2, in some embodiments, the included angle between the guide inclined surface 331 and the side of the blocking portion 33 away from the slot is α, and α<45°. For example, α can be 44°, 43°, 35°, 30°, 25°, etc.

[0212] Since α affects the slope of the guide inclined surface 331, when α gradually approaches 90° or 0°, the guide inclined surface 331 will disappear, therefore, 0°<α<90°.

[0213] When α is greater than 45°, the slope of the guide inclined surface 331 is large, the steeper the guide inclined surface 331, the limited guiding effect on the damping member 52, and the smoothness of the guiding arc surface 523 of the damping member 52 moving on the guide inclined surface 331 is not good.

[0214] In contrast, in the present application, when α is less than 45°, the slope of the guide inclined surface 331 is small, the gentler the guide inclined surface 331, the better the guiding effect on the damping member 52, and the guiding arc surface 523 of the damping member 52 moving on the guide inclined surface 331 has good smoothness.

[0215] In some embodiments, 20°<α<45°.

[0216] However, smaller α is not always better. For example, when α is less than 20°, the guide slope 331 will be too gentle. Only when the guide arc surface 523 of the damping member 52 moves a long distance on the guide slope 331 will the guide slope 331 have a limiting effect on the movement of the damping member 52 toward the blocking part 33. At the same time, if the guide slope 331 is too gentle, it will also cause the blocking part 33 to have a long thin wall at the position of the guide slope 331, which will affect the strength of the blocking part 33.

[0217] In contrast, this application ensures that when 20° < α < 45°, the guide arc surface 523 of the damping member 52 moves smoothly on the guide slope 331, which can improve the limiting efficiency of the guide slope 331 on the damping member 52, while also ensuring the strength of the shielding part 33.

[0218] Figure 14 for Figure 11 A partial schematic diagram of the damping component and the limiting groove.

[0219] See Figure 14 As shown, the damping member 52 and the blocking part 33 have a minimum gap of D3. The minimum gap D3 is located at the position of the damping member 52 and the blocking part 33 on the non-guide slope 331. D3 < 0.3 mm. For example, D3 can be 0.25 mm, 0.20 mm, 0.15 mm, 0.1 mm, etc.

[0220] If D3 ≥ 0.3 mm, the gap (i.e. D3) between the damping member 52 and the shielding part 33 at the non-guide slope 331 position will be too large. This will still cause the damping member 52 to move toward or away from the damper body and bend and deform under the push of the door cover 40 or the damping medium.

[0221] Therefore, in this embodiment of the application, when D3 < 0.3mm, while ensuring that the damping member 52 moves smoothly toward or away from the damper body, D3 can be set as small as possible to prevent the damping member 52 from bending and deforming when it moves toward the shielding part 33 under the push of the door cover 40 or the damping medium, thereby enhancing the stability of the damping force, the service life of the damper 50, and reducing the noise generated by the damping member 52.

[0222] Figure 15 It shows Figure 11 A schematic diagram of the structure of the middle damping component 52 and the bottom wall 63 of the limiting groove 60. Figure 16 A partial schematic diagram of a damper 50 is shown from a second perspective.

[0223] See Figure 15 and Figure 16As shown, in some embodiments, the damping member 52 has a second limiting portion 522 protruding towards one side of the bottom wall 63. The second limiting portion 522 has a gap with the bottom wall 63 of the limiting slot 60. The second limiting portion 522 is used to limit the movement of the damping member 52 towards the bottom wall 63.

[0224] On the basis of the constant slot depth of the limiting slot 60, since the second limiting portion 522 is a protruding structure on the damping member 52 facing the bottom wall 63 of the limiting slot 60, by the arrangement of the second limiting portion 522, the gap between the second limiting portion 522 and the bottom wall 63 can be reduced. In this way, during the movement of the damping member 52 towards the damper body, if the damping member 52 is also moved towards the bottom wall 63 under the pushing of the door cover 40, the second limiting portion 522 will be in contact with the bottom wall 63 of the limiting slot 60 in priority to the rest of the damping member 52, so as to limit the movement of the damping member 52 towards the bottom wall 63. At the same time, when the second limiting portion 522 is in contact with the bottom wall 63 in priority to the rest of the damping member 52, the non-protruding part of the damping member 52 will also be prevented from contacting the bottom wall 63, thereby relatively reducing the contact area between the damping member 52 and the bottom wall 63 and reducing the frictional resistance between the damping member 52 and the bottom wall 63. In this way, during the closing process of the door cover 40, the damping force is mainly provided by the damper 50 to make the door cover 40 slow down, and the jerk feeling caused by the contact between the damping member 52 and the bottom wall 63 during the closing process of the door cover 40 is reduced.

[0225] When the movement of the damping member 52 towards the bottom wall 63 is limited, the bending deformation of the damping member 52 towards the bottom wall 63 is small, which can improve the bending deformation of the damper 50 in the slot depth direction towards the bottom wall 63 when the damper 50 is pushed, so as to avoid the bending deformation of the damper 50 in the slot depth direction towards the bottom wall 63, thereby avoiding the instability of the damping force of the damper 50 when the damper 50 is pushed, the generation of noise, the shortening of the service life and other adverse problems, and enhancing the stability of the slow-down function of the door cover 40. At the same time, the service life of the damper 50 can be improved, and the noise generated by the damper 50 can be reduced.

[0226] Similarly, compared with the way of increasing the size of the damping member 52 in the slot depth direction, the embodiment of the present application can limit the movement of the damping member 52 towards the bottom wall 63 by only reducing the gap between the second limiting portion 522 and the bottom wall 63. Moreover, since the second limiting portion 522 is a local protrusion on the damping member 52, the gap between the second limiting portion 522 and the bottom wall 63 is easy to control, and the second limiting portion 522 can effectively limit the movement of the damping member 52 towards the bottom wall 63. The specific reasons can be referred to the related description of the first limiting portion 521, which will not be described here.

[0227] It should be noted that in some embodiments, when the damping member 52 has the first limiting portion 521 and the second limiting portion 522, while improving the bending deformation of the damper 50 in the slot width direction of the limiting slot 60, the bending deformation of the damper 50 in the slot depth direction towards the bottom wall 63 can also be improved, so that the bending deformation of the damper 50 in the slot width direction and the slot depth direction towards the bottom wall 63 side can be effectively controlled, to further enhance the stability of the slow descent function of the door cover 40, and at the same time, the service life of the damper 50 can be further improved, and the noise generated by the damper 50 can be reduced.

[0228] It should be noted that in some embodiments, when the damping member 52 has the first limiting portion 521 and the second limiting portion 522, and the damping member 52 has an overlapping area with the shielding portion 33 when the damping member 52 is not pushed by the door cover 40, while improving the bending deformation of the damper 50 in the slot width direction of the limiting slot 60, the bending deformation of the damper 50 in the slot depth direction towards the shielding portion 33 and the bottom wall 63 can also be improved, and the bending deformation of the damper 50 in the slot width direction and the slot depth direction can be effectively controlled, to further enhance the stability of the slow descent function of the door cover 40, and at the same time, the service life of the damper 50 can be further improved, and the noise generated by the damper 50 can be reduced.

[0229] The minimum gap between the second limiting portion 522 and the bottom wall 63 is D4, and D4 < 0.3 mm. For example, D4 can be 0.25 mm, 0.23 mm, 0.20 mm, 0.15 mm, 0.10 mm, etc.

[0230] If D4 ≥ 0.3 mm, although the second limiting portion 522 is provided, the damping member 52 will still move towards the bottom wall 63 and be bent and deformed under the pushing of the door cover 40 or the damping medium when moving towards or away from the damper body.

[0231] Therefore, when D4 < 0.3 mm in the embodiments of the present application, on the basis of ensuring smooth movement of the damping member 52 towards or away from the damper body, D4 can be set as small as possible to prevent the damping member 52 from moving towards the bottom wall 63 and being bent and deformed under the pushing of the door cover 40 or the damping medium, thereby enhancing the stability of the damping force, the service life of the damper 50, and reducing the noise generated by the damping member 52.

[0232] It should be noted that along the slot depth direction of the limiting slot 60, the side of the second limiting portion 522 facing the bottom wall 63 has a point closest to the bottom wall 63. The gap between this point and the bottom wall 63 can be regarded as the minimum gap D4. Therefore, measuring the gap between this point and the bottom wall 63 in the slot depth direction of the limiting slot 60 is the minimum gap D4.

[0233] Similar to the first limiting part 521, the second limiting part 522 can also be a rectangular block. In this case, the end of the second limiting part 522 facing the damper body will be a right-angled structure.

[0234] Similarly, when the second limiting part 522 is a rectangular block, it has obvious edges. When the damping member 52 moves toward the bottom wall 63 under the push of the door cover 40, the edges of the second limiting part 522 are easily stuck on the bottom wall 63, affecting the movement of the damping member 52 toward or away from the damper body.

[0235] For this reason, see Figure 15 and Figure 16 As shown, in some embodiments, the second limiting portion 522 has a third guide structure 5221 at its end facing the damper body, and the third guide structure 5221 has a third guide surface 5222 on the side facing the bottom wall 63 of the limiting groove 60. Similar to the first guide surface 5212, the gap between the third guide surface 5222 and the bottom wall 63 increases along the direction of the damper member 52 toward the damper body. For example, the gap between the third guide surface 5222 and the bottom wall 63 can gradually increase along the direction of the damper member 52 toward the damper body.

[0236] By setting the third guide structure 5221, the shape of the second limiting part 522 on the side facing the bottom wall 63 can be changed so that the second limiting part 522 has a larger gap between the third guide surface 5222 and the bottom wall 63, thereby reducing the contact area between the second limiting part 522 and the bottom wall 63 when the second limiting part 522 moves toward the bottom wall 63.

[0237] Thus, when the damping member 52 moves towards the bottom wall 63 under the push of the door cover 40, the remaining positions of the second limiting part 522 facing the bottom wall 63 will preferentially contact the bottom wall 63 to limit the movement of the damping member 52 towards the bottom wall 63 when it moves towards the damper body, thereby improving the bending deformation of the damper 50 towards the bottom wall 63 when it moves towards the damper body. The remaining positions of the second limiting part 522 facing the bottom wall 63 include the positions of the second limiting part 522 that are not on the third guide surface 5222.

[0238] Similarly, since the second limiting part 522 has a large gap between the third guide surface 5222 and the bottom wall 63, when the second limiting part 522 contacts the bottom wall 63 in other positions, the third guide surface 5222 will also guide the second limiting part 522 to move away from the bottom wall 63, so as to avoid the second limiting part 522 getting stuck on the bottom wall 63 and ensure the smooth movement of the damping member 52 toward the damper body.

[0239] In some embodiments, the second guide surface 5214 may be an arc-shaped surface, so that the gap between the third guide surface 5222 and the bottom wall 63 is increased in the direction of the damper 52 toward the damper body, so as to avoid the first limiting part 521 having an edge on the side wall facing the limiting groove 60, which would affect the movement of the damper 52 toward the damper body.

[0240] Alternatively, the second guide surface 5214 can also be an inclined surface, which can also increase the gap between the third guide surface 5222 and the bottom wall 63 in the direction of the damper 52 toward the damper body. When the inclined surface is arc-shaped to the remaining position of the second limiting part 522 facing the bottom wall 63, it can also prevent the second limiting part 522 from having an edge on the side facing the bottom wall 63, which would affect the movement of the damper 52 toward the damper body.

[0241] The second limiting part 522 has a fourth guide structure 5223 at the end away from the damper body, and the side of the fourth guide structure 5223 facing the bottom wall 63 has a fourth guide surface 5224.

[0242] See Figure 14 and Figure 15 As shown, in some embodiments, when the second limiting portion 522 has a third guide structure 5221, the second limiting portion 522 may also have a fourth guide structure 5223 at the end opposite to the damper body. The fourth guide structure 5223 has a fourth guide surface 5224 on the side facing the bottom wall 63. Similar to the second guide surface 5214, the gap between the fourth guide surface 5224 and the bottom wall 63 increases along the direction from the damper body to the damping member 52. For example, the gap between the fourth guide surface 5224 and the bottom wall 63 may also gradually increase along the direction from the damper body to the damping member 52.

[0243] By setting the fourth guide structure 5223, the shape of the first limiting part 521 on the side facing the side wall of the limiting groove 60 can be further changed, so that the second limiting part 522 has a larger gap between the fourth guide surface 5224 and the bottom wall 63, so as to reduce the contact area between the second limiting part 522 and the bottom wall 63 when the second limiting part 522 moves toward the bottom wall 63.

[0244] When the damping member 52 moves toward the side away from the damper body under the push of the damping medium and moves toward the bottom wall 63, the second limiting part 522 will preferentially contact the bottom wall 63 in the remaining positions facing the bottom wall 63, so as to limit the movement of the damping member 52 toward the side away from the damper body in the direction toward the bottom wall 63, thereby improving the bending deformation of the damper 50 toward the bottom wall 63 when it moves toward the side away from the damper body.

[0245] Meanwhile, the fourth guide surface 5224 also guides the second limiting portion 522 to move in a direction away from the bottom wall 63, so as to avoid the second limiting portion 522 from being stuck in the bottom wall 63, and ensure smooth movement of the damping member 52 away from the side of the damper body.

[0246] In some embodiments, the fourth guide surface 5224 has the same structure as the third guide surface 5222, and specific details can be referred to the related description of the third guide surface 5222 above, which will not be repeated here. For example, in some embodiments, the third guide structure 5221 and the fourth guide structure 5223 can be symmetrical structures on the second limiting portion 522, so as to simplify the structure of the second limiting portion 522 and the damper 50.

[0247] It should be noted that, since the third guide structure 5221 and the fourth guide structure 5223 are arranged at the two ends of the second limiting portion 522, the gap between the two ends of the second limiting portion 522 and the bottom wall 63 can be increased without affecting the minimum gap D4 between the second limiting portion 522 and the bottom wall 63, so as to ensure smooth movement of the damping member 52 away from or close to the damper body. At this time, the second limiting portion 522 has a point closest to the bottom wall 63 on the portion between the third guide structure 5221 and the fourth guide structure 5223. In the direction of the groove depth of the limiting groove 60, the gap between the point on the second limiting portion 522 and the bottom wall 63 can be regarded as the minimum gap D4.

[0248] Referring to Figure 16 In some embodiments, as shown in the figure, when the blocking portion 33 blocks the slot opening of the limiting groove 60, the minimum gaps between the damping member 52 and the blocking portion 33, and between the damping member 52 and the bottom wall 63 of the limiting groove 60 can be less than 0.3 mm. That is, the minimum gaps D3 and D4 can be less than 0.3 mm.

[0249] By limiting the minimum gaps between the damping member 52 and the blocking portion 33, and between the damping member 52 and the bottom wall 63 of the limiting groove 60, the movement of the damping member 52 in the direction of the bottom wall 63 of the limiting groove 60 and in the direction of the blocking portion 33 can also be limited, so as to improve the bending deformation of the damper 50 in the direction of the groove depth of the limiting groove 60, further enhance the stability of the realization of the slow descending function of the door cover 40, and further improve the service life of the damper 50 and reduce the noise generated by the damper 50.

[0250] In the description of the application, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0251] In the description of the application, it needs to be understood that the terms "include" and "have" and their any inflectional deformations used herein are intended to cover non-exclusive inclusion, for example, a process, method, display structure, product or device including a series of steps or units does not have to be limited to only those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0252] The term "and / or" used in the application is only to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " herein generally represents that the front and rear associated objects have an "or" relationship.

[0253] Unless otherwise explicitly specified and limited, the terms "mount", "connect", "connect", "fix", and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium; it can make the internal connection of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated.

[0254] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the application, and not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the application.

Claims

1. A pulsator washing machine, characterized in that, The utility model relates to a washing machine door cover damping device, including: A cabinet (10), the top of the cabinet (10) has a drop port (121); A barrel assembly is arranged in the cabinet (10), and the barrel assembly has a washing cavity (20), and the barrel port of the barrel assembly is communicated with the washing cavity (20) and is directed to the drop port (121); A door cover assembly includes: A mounting piece (30) is arranged on the top of the cabinet (10) and cooperates with the top of the cabinet (10) to define a limiting groove (60); A door cover (40) is rotatably connected with the mounting piece (30), and the door cover (40) can open or close the drop port (121) when rotating relative to the mounting piece (30); A damper (50) includes: A damper body is arranged in the limiting groove (60), and the damper body is located at one end of the limiting groove (60) away from the door cover (40); A damping piece (52) is located in the limiting groove (60), and the damping piece (52) is located at one end of the limiting groove (60) close to the door cover (40), and the damping piece (52) is connected with the damper body; when the door cover (40) rotates relative to the mounting piece (30), the door cover (40) pushes the damping piece (52) to move in the limiting groove (60) towards the damper body to limit the rotation of the door cover (40); Wherein, the damping piece (52) has a protruding first limiting part (521) on the side wall of the limiting groove (60), and the first limiting part (521) has a gap with the side wall of the limiting groove (60), and the minimum gap between the first limiting part (521) and the side wall of the limiting groove (60) is D1, D1 is less than 0.25mm; the first limiting part (521) is used for limiting the movement of the damping piece (52) towards the side wall of the limiting groove (60).

2. A pulsator washing machine according to claim 1, characterized in that, The first limiting part (521) has a first guide structure (5211) at one end towards the damper body, and the first guide structure (5211) has a first guide surface (5212) on one side of the side wall of the limiting groove (60); In the direction of the damping piece (52) towards the damper body, the gap between the first guide surface (5212) and the side wall of the limiting groove (60) increases.

3. A pulsator washing machine according to claim 2, characterized in that, The first guide surface (5212) is an arc surface or an inclined surface.

4. A pulsator washing machine according to claim 2, characterized in that, The first limiting part (521) further has a second guide structure (5213) at one end away from the damper body, and the second guide structure (5213) has a second guide surface (5214) on one side of the side wall of the limiting groove (60); In the direction of the damper body to the damping piece (52), the gap between the second guide surface (5214) and the side wall of the limiting groove (60) increases.

5. A pulsator washing machine according to any one of claims 1 to 4, characterized in that, The side wall of the limiting groove (60) comprises a first side wall (61) and a second side wall (62), the top of the cabinet (10) defines the first side wall (61), and the mounting member (30) defines part of the second side wall (62); The damping member (52) is provided with the first limiting part (521) on the two side walls opposite to the first side wall (61) and the second side wall (62).

6. A pulsator washing machine according to claim 5, characterized in that, At least two first limiting parts (521) are provided on the same side wall of the damping member (52) in the direction of the damper body.

7. A pulsator washing machine according to any one of claims 1 to 4, characterized in that, The mounting member (30) comprises: A shielding part (33) shielding the slot of the limiting groove (60); The damping member (52) is configured to have an overlapping area with the shielding part (33) in the height direction of the cabinet (10) when not being pushed by the door cover (40); the damping member (52) has a guide arc surface (523) at the position corresponding to the overlapping area; The shielding part (33) has a guide inclined surface (331) facing the damping member (52), and at least part of the guide inclined surface (331) is in the overlapping area; the guide inclined surface (331) is configured to contact at least part of the guide arc surface (523) when the damping member (52) moves towards the shielding part (33), so as to limit the movement of the damping member (52) towards the shielding part (33).

8. A pulsator washing machine according to claim 7, characterized in that, In the direction of the damping member (52) towards the damper body, the size of the overlapping area is D2, and D2>1mm.

9. A pulsator washing machine according to claim 7, characterized in that, The included angle between the guide inclined surface (331) and the side of the shielding part (33) away from the slot is α, and α<45°.

10. A pulsator washing machine according to any one of claims 1 to 4, characterized in that, The damping member (52) has a protruding second limiting part (522) on one side facing the bottom wall (63) of the limiting groove (60), and the second limiting part (522) is used to limit the movement of the damping member (52) towards the bottom wall (63) of the limiting groove (60).

11. A pulsator washing machine according to claim 10, characterized in that, The minimum gap between the second limiting part (522) and the bottom wall (63) of the limiting groove (60) is D4, and D4 is less than 0.3mm.

12. A pulsator washing machine according to claim 11, characterized in that, The second limiting part (522) has a third guide structure (5221) at the end facing the damper body, and the third guide structure (5221) has a third guide surface (5222) facing one side of the bottom wall (63) of the limiting groove (60); In the direction of the damping member (52) towards the damper body, the gap between the third guide surface (5222) and the bottom wall (63) of the limiting groove (60) increases.

13. A pulsator washing machine according to claim 12, characterized in that, The third guide surface (5222) is an arc surface or an inclined surface.

14. A pulsator washing machine according to claim 12, characterized in that, The second limiting part (522) is also provided with a fourth guide structure (5223) at the end away from the damper body, and the fourth guide structure (5223) has a fourth guide surface (5224) facing one side of the bottom wall (63) of the limiting groove (60); In the direction from the damper body to the damping member (52), the gap between the fourth guide surface (5224) and the bottom wall (63) of the limiting groove (60) increases.

15. A pulsator washing machine according to any one of claims 1 to 4, characterized in that, The mounting member (30) comprises: a shielding portion (33) shielding the opening of the limiting groove (60); wherein the minimum gap between the damping member (52) and the shielding portion (33) and between the damping member (52) and the bottom wall (63) of the limiting groove (60) is less than 0.3 mm.

16. A pulsator washing machine characterized by Comprise: a cabinet (10), the top of the cabinet (10) has a drop port (121); a barrel assembly provided in the cabinet (10), the barrel assembly has a washing cavity (20), and the barrel port of the barrel assembly communicates with the washing cavity (20) and faces the drop port (121); a door cover assembly, the door cover assembly comprises: a mounting member (30) provided on the top of the cabinet (10) and defining a limiting groove (60) with the top of the cabinet (10); the mounting member (30) has a shielding portion (33) shielding the opening of the limiting groove (60); a door cover (40) rotationally connected with the mounting member (30) to open or close the drop port (121) when rotating relative to the mounting member (30); a damper (50), the damper (50) comprises: a damper body provided in the limiting groove (60) and located at one end of the limiting groove (60) away from the door cover (40); a damping member (52) located in the limiting groove (60) and located at one end of the limiting groove (60) close to the door cover (40), the damping member (52) is connected with the damper body; when the door cover (40) rotates relative to the mounting member (30), the door cover (40) pushes the damping member (52) to move in the limiting groove (60) towards the damper body to limit the rotation of the door cover (40); wherein the damping member (52) is configured to have an overlapping area with the shielding portion (33) in the height direction of the cabinet (10) when not being pushed by the door cover (40); the damping member (52) has a guide arc surface (523) corresponding to the overlapping area; the shielding portion (33) has a guide inclined surface (331) facing the damping member (52), and at least part of the guide inclined surface (331) is in the overlapping area; the guide inclined surface (331) is configured to contact at least part of the guide arc surface (523) when the damping member (52) moves towards the shielding portion (33) to limit the movement of the damping member (52) towards the shielding portion (33); the included angle between the guide inclined surface (331) and the surface of the shielding portion (33) away from the opening is α, and α < 45°.

17. A pulsator washing machine characterized by Comprise: a cabinet (10), the top of the cabinet (10) has a drop port (121); A drum assembly is arranged in the cabinet (10), and has a washing cavity (20) and a drum opening communicating with the washing cavity (20) and facing the drop opening (121); A door cover assembly comprises: A mounting member (30) is arranged at the top of the cabinet (10) and cooperates with the top of the cabinet (10) to define a limiting groove (60); A door cover (40) is rotatably connected with the mounting member (30) to open or close the drop opening (121) when rotating relative to the mounting member (30); A damper (50) comprises: A damper body is arranged in the limiting groove (60) and located at one end of the limiting groove (60) away from the door cover (40); A damping member (52) is located in the limiting groove (60) and located at one end of the limiting groove (60) close to the door cover (40), and the damping member (52) is connected with the damper body; the door cover (40) is configured to push the damping member (52) to move in the limiting groove (60) towards the damper body when the door cover (40) rotates relative to the mounting member (30), so as to limit the rotation of the door cover (40); Wherein, the damping member (52) has a protruding second limiting portion (522) on the side facing the bottom wall (63) of the limiting groove (60), and the second limiting portion (522) has a gap with the bottom wall (63) of the limiting groove (60), and the minimum gap between the second limiting portion (522) and the bottom wall (63) of the limiting groove (60) is D4, which is less than 0.3mm; the second limiting portion (522) is used to limit the movement of the damping member (52) towards the bottom wall (63) of the limiting groove (60).

18. A horizontal axis laundry washing machine according to Claim 17, characterized in that The second limiting portion (522) has a third guide structure (5221) at the end facing the damper body, and the third guide structure (5221) has a third guide surface (5222) on the side facing the bottom wall (63) of the limiting groove (60); In the direction of the damping member (52) towards the damper body, the gap between the third guide surface (5222) and the bottom wall (63) of the limiting groove (60) increases.

19. A drum washing machine according to claim 17 or 18, characterised in that, The second limiting portion (522) is further provided with a fourth guide structure (5223) at the end away from the damper body, and the fourth guide structure (5223) has a fourth guide surface (5224) on the side facing the bottom wall (63) of the limiting groove (60); In the direction of the damper body to the damping member (52), the gap between the fourth guide surface (5224) and the bottom wall (63) of the limiting groove (60) increases.

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