CN117628806A - Door opening and closing device for refrigerator and refrigerator - Google Patents

Abstract

The application relates to the technical field of refrigerators and discloses a door opening and closing device for a refrigerator. The door opening and closing device includes: a first hinge plate adapted to be connected to the body; the second hinge plate is suitable for being connected with the door body and is rotationally connected with the first hinge plate; the rotating member is matched with the second hinge plate and is used for driving the second hinge plate to rotate along a preset direction, wherein the preset direction is opposite to the direction in which the door body drives the second hinge plate to rotate when the door is opened. When the door is opened under the action of external force, the door body rotates relative to the body to drive the second hinge plate to rotate relative to the first hinge plate. The rotary member is matched with the second hinge plate to drive the second hinge plate to reversely rotate (along a preset direction), so that the speed of opening the door body can be reduced, the stability of opening the door is improved, and the door opening hand feeling of a user is improved. The application also discloses a refrigerator.

Description

Door opening and closing device for refrigerator and refrigerator

Technical Field

The application relates to the technical field of refrigerators, in particular to a door opening and closing device for a refrigerator and the refrigerator.

Background

At present, when the door opening force applied to the door body by a user in the refrigerator door opening process is small, the door body cannot be opened; when the door opening force is large, the door body can be opened at a high speed, the door opening process is unstable, and the door opening hand feeling of a user is affected.

In order to achieve the purpose of slow and gentle door opening process, a switch system is disclosed in the related art, and comprises a push-pull driver arranged in the middle of the top of a refrigerator main body and a rotating shaft driver arranged in the rotating shaft position of a hinge at the top of the refrigerator main body, wherein a lock catch is arranged on a refrigerator door body and matched with the push-pull driver; the push rod is provided with a flexible convex claw, the telescopic buckle is provided with a first groove and a second groove, the second groove is close to the front end of the telescopic buckle, and the flexible convex claw can be embedded into the first groove or the second groove; the bottom of the telescopic buckle is provided with a limiting bulge, and the bottom end of the limiting bulge can be propped against a shell bulge on the push-pull driver shell; the front end of the telescopic buckle is of a fork structure, and one fork structure is of a flexible back buckle; the gear set comprises a push rod gear meshed with the push rod, and a tooth missing part is arranged on the push rod gear.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

in the related art, a push rod with a flexible claw is matched with a telescopic buckle with a flexible back buckle in the structure of the push-pull driver, and then the refrigerator door body can be pushed open or pulled back by combining the lock buckle, so that the door is opened and closed slowly and gently. However, the switch system in the related art is complicated in structure and high in cost.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.

The embodiment of the disclosure provides a door opening and closing device for a refrigerator and the refrigerator, so as to solve the problems of complex structure and high cost of a switch system in the related art.

According to a first aspect of an embodiment of the present invention, there is provided a door opening and closing device for a refrigerator including a door body and a body, the door body being rotatably connected with the body to open or close the body; the door opening and closing device includes: a first hinge plate adapted to be connected to the body; the second hinge plate is suitable for being connected with the door body and is rotationally connected with the first hinge plate; the rotating member is matched with the second hinge plate and is used for driving the second hinge plate to rotate along a preset direction, wherein the preset direction is opposite to the direction in which the door body drives the second hinge plate to rotate when the door is opened.

Optionally, the rotating member is attached to the second hinge plate and can rotate relatively, and the axis of rotation of the rotating member is not coincident with the axis of rotation of the second hinge plate.

Optionally, the rotating member is a driven gear, the second hinge plate is provided with gear teeth, and the driven gear is meshed with the gear teeth to drive the second hinge plate to rotate along the preset direction.

Optionally, the pitch circle radius of the driven gear is smaller than the pitch circle radius of the gear teeth.

Optionally, the door opening and closing device further includes: the driving gear is connected with the second hinge plate through a rotating shaft, the driving gear and the second hinge plate can rotate relatively, the second hinge plate drives the driving gear to rotate in the door opening process, and the driving gear drives the driven gear to rotate; the driving gear and the driven gear are connected through a rotating shaft, and rotate around the rotating shaft, and the radius of the driving gear is larger than that of the driven gear.

Optionally, the second hinge plate is provided with a through hole, and the rotating shaft is positioned in the through hole, so that the door body drives the second hinge plate to rotate around the rotating shaft under the action of door opening force; the rotating shaft is connected with the rotating shaft, and the axes of the rotating shaft and the rotating shaft are not coincident.

Optionally, the distance between the rotation center of the driving gear and the rotation shaft is greater than the distance between the rotation center of the second hinge plate and the rotation shaft, so that the second hinge plate drives the driving gear to rotate, and the driving gear drives the driven gear to rotate.

Optionally, the door opening and closing device further includes: the rotating shaft is arranged at one end of the swinging rod and is rotationally connected with the one end of the swinging rod, and the rotating shaft is arranged at the other end of the swinging rod, so that the distance between the rotating center of the driving gear and the rotating shaft is larger than the distance between the rotating center of the second hinge plate and the rotating shaft.

Optionally, the first hinge plate is provided with a guiding part, and the guiding part is matched with the rotating member and is used for guiding the rotating member to move along with the second hinge plate in the door opening process, so that the rotating member is always matched with the second hinge plate.

According to a second aspect of an embodiment of the present invention, there is provided a refrigerator including: a body; the door body is rotationally connected with the body to open or close the body; the door opening and closing device for a refrigerator as claimed in any one of the above embodiments, wherein the first hinge plate is connected to the body, and the second hinge plate is connected to the door body.

The embodiment of the disclosure provides a door opening and closing device for a refrigerator and the refrigerator, which can realize the following technical effects:

when the door is opened under the action of external force, the door body rotates relative to the body to drive the second hinge plate to rotate relative to the first hinge plate. The rotary member is matched with the second hinge plate to drive the second hinge plate to reversely rotate (along a preset direction), so that the speed of opening the door body can be reduced, the stability of opening the door is improved, and the door opening hand feeling of a user is improved.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:

fig. 1 is a schematic structural view of a refrigerator according to a first view angle when a door body is in a door-closed position according to an embodiment of the present disclosure;

fig. 2 is a schematic structural view of a second view angle of the refrigerator when a door body is in a door-closed position according to an embodiment of the present disclosure;

FIG. 3 is an enlarged schematic view of the portion A in FIG. 2;

fig. 4 is a schematic structural view of a third view angle of the refrigerator when a door body is in a door-closed position according to an embodiment of the present disclosure;

FIG. 5 is an enlarged schematic view of the portion B of FIG. 4;

fig. 6 is a schematic structural view of a first view angle of a refrigerator when a door body is at a half-open door position according to an embodiment of the present disclosure;

FIG. 7 is an enlarged schematic view of the portion C in FIG. 6;

fig. 8 is a schematic structural view of a second view angle of a refrigerator when one door body is at a half-open door position according to an embodiment of the present disclosure;

fig. 9 is an enlarged schematic view of the portion D in fig. 8;

fig. 10 is a schematic structural view of a first view angle of a refrigerator when a door body is at a fully opened door position according to an embodiment of the present disclosure;

FIG. 11 is an enlarged schematic view of the portion E in FIG. 10;

FIG. 12 is a schematic view of a refrigerator in a second view angle when one door body is in a fully open door position according to an embodiment of the present disclosure;

fig. 13 is an enlarged schematic view of the portion F in fig. 12;

fig. 14 is an exploded view of a door opening and closing device according to an embodiment of the present disclosure.

Reference numerals:

10. a first hinge plate; 101. a first screw hole; 102. a rotation hole; 103. a first fixing portion; 104. A rotating shaft mounting part; 105. a rack setting part; 106. a first arcuate rack; 107. a second arcuate rack; 108. a rotation hole; 2. a transmission assembly; 21. a second hinge plate; 211. a second screw hole; 212. A second fixing portion; 213. a rotating part; 214. a through hole; 216. gear teeth; 22. a driven gear; 23. A drive gear; 24. a rotation shaft; 25. a rotating shaft; 26. swing rod; 30. a connecting rod; 301. a first end; 302. a second end; 303. a first link hole; 304. a second link hole; 40. a rotating shaft; 100. a refrigerator; 102. a door body; 103. a body; 104. and a door opening and closing device.

Detailed Description

So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.

The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe embodiments of the present disclosure and embodiments thereof and are not intended to limit the indicated device, element, or component to a particular orientation or to be constructed and operated in a particular orientation. Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the embodiments of the present disclosure will be understood by those of ordinary skill in the art in view of the specific circumstances.

In addition, the terms "disposed," "connected," "secured" and "affixed" are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the embodiments of the present disclosure may be understood by those of ordinary skill in the art according to specific circumstances.

The term "plurality" means two or more, unless otherwise indicated.

The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.

It should be noted that, without conflict, the embodiments of the present disclosure and features of the embodiments may be combined with each other.

Referring to fig. 1 to 14, the embodiment of the present disclosure provides a door opening and closing device for a refrigerator 100, the refrigerator 100 including a body 103 and a door body 102, the door body 102 being rotatably connected with the body 103 to open or close the body 103.

The door opening and closing device may be used to open the door body 102 of the refrigerator 100, and may also be used in a door-in-door structure of the refrigerator 100.

The door opening and closing device may be used to open the door 102 of the refrigerator 100, the body 103 being a case defining a refrigerating compartment and a freezing compartment, the door 102 being provided to cover the refrigerating compartment and the freezing compartment for opening or closing the refrigerating compartment and the freezing compartment.

As shown in fig. 7 and 8, for the in-door refrigerator 100, the door opening and closing device 104 may be applied to the door body 102 in addition to the door body 102. Specifically, the door body 102 includes a main door and an auxiliary door rotatably provided to the main door and defining a refrigerating space or a freezing space together with the main door. When the door opening and closing device is used for a door-in-door structure, the door body 102 in the present application is a sub-door, and the body 103 is a main door. At this time, the door opening force acts on the sub-door.

The door opening and closing device comprises a first hinge plate 10, a transmission assembly 2 and a connecting rod 30.

The first hinge plate 10 is coupled to the body 103, and as shown in fig. 3 and 5, the first hinge plate 10 is coupled to an end of the body 103. Alternatively, the first hinge plate 10 is fixedly connected to the body 103, for example, by fastening means such as screws, or welding, etc., as shown in fig. 14, a first screw hole 101 is provided on the first hinge plate 10, and the screws pass through the first screw hole 101 to achieve the fixed connection between the first hinge plate 10 and the body 103.

The transmission assembly 2 comprises a second hinge plate 21 and a swivel member, the second hinge plate 21 being adapted to be connected to the door body 102, as shown in fig. 3 and 5, the second hinge plate 21 being connected to an end of the door body 102. Optionally, the second hinge plate 21 is fixedly connected to the door body 102, for example, by fastening means such as screws, or welding, etc., as shown in fig. 14, a second screw hole 211 is provided on the second hinge plate 21, and the screws pass through the second screw hole 211 to achieve the fixed connection between the second hinge plate 21 and the door body 102.

The rotating member is rotatably connected with the second hinge plate 21 and is used for driving the second hinge plate 21 to rotate at a first speed along a preset direction, wherein the preset direction is opposite to the direction in which the door body 102 drives the second hinge plate 21 to rotate when the door is opened.

Taking the example that the door body 102 drives the second hinge plate 21 to rotate outwards (clockwise) when the door is opened, the rotating member drives the second hinge plate 21 to rotate inwards (anticlockwise), so that the rotating speed of the second hinge plate 21 relative to the first hinge plate 10 is compensated.

Under the action of the door opening force, when the door body drives the second hinge plate to rotate at a second speed, and the second speed is larger than the first speed, so that the overall movement direction of the second hinge plate is the direction in which the door body drives the second hinge plate to move, namely the opposite direction of the preset direction, and the door body can be opened.

As shown in fig. 14, a first end 301 of the link 30 is rotatably connected to the first hinge plate 10, and a second end 302 of the link 30 is rotatably connected to the transmission assembly 2.

When the door is opened, the second hinge plate 21 moves outwards along with the door body 102 under the driving of the door body 102, so that the second end 302 of the connecting rod 30 is driven to move outwards, and the connecting rod 30 rotates around the first end 301 relative to the first hinge plate 10. The second hinge plate 21 rotates while moving outwards, wherein outwards refers to a direction away from the body 103, along with the combined action of the link 30 moving outwards along with the door body 102 and the rotation member driving the second hinge plate 21 to rotate reversely.

In the closed door position, a non-zero angle exists between the line connecting the first end and the second end of the link 30 (the length direction of the link) and the perpendicular line from the body to the door body.

Under the action of the door opening force, the second end of the connecting rod swings outwards, and the connecting rod gradually extends outwards, so that the door is opened.

As shown in fig. 3, in the door-closed position, the line connecting the first end and the second end of the link (the length direction of the link) is perpendicular to the perpendicular line from the body to the door body.

The outward movement of the second hinge plate 21 increases the distance of the second hinge plate 21 from the body 103, thereby increasing the distance of the door 102 from the body 103, avoiding interference collisions of the door 102 with other components, including but not limited to the body 103, walls around the refrigerator 100, etc.

Optionally, the rotating member is attached to the second hinge plate and can rotate relatively, and the rotating member is not coincident with the rotation axis of the second hinge plate, wherein the rotating member is rotatably connected with the second end of the connecting rod through the rotation axis.

The rotary member is engaged with the second hinge plate and can rotate relatively, so that resistance exists on the movement of the second hinge plate, such as friction force between the rotary member and the second hinge plate, and the movement speed of the second hinge plate can be reduced, and the door opening stability is enhanced.

Alternatively, as shown in fig. 14, the rotating member is a driven gear 22, and the transmission assembly 2 further includes a driving member. The second hinge plate drives the driving piece to move under the action of the door opening force, and the driving piece drives the rotating piece to rotate around the rotating shaft.

The second hinge plate drives the driving member to move, so that the driving member does not need driving of additional components such as a motor, and the rotary member can quickly respond to the movement of the second hinge plate.

The driving member is in driving connection with the driven gear 22 for driving the driven gear 22 to rotate.

The second hinge plate 21 is provided with gear teeth 216, and the driven gear 22 is meshed with the gear teeth 216 to drive the second hinge plate 21 to rotate along a preset direction.

The rotation member drives the second hinge plate 21 to rotate reversely (in a preset direction) through the engagement of the driven gear 22 and the gear teeth 216, and the driven gear 22 can stably drive the second hinge plate 21 to rotate reversely due to stable engagement movement of the gears, so that the door opening stability is improved.

Optionally, the pitch radius of the driven gear is less than the pitch radius of the gear teeth such that the first speed is less than the second speed.

In practical application, the reference circle of the driven gear and the reference circle radius of the gear teeth can be flexibly set according to the required door opening speed, and the door opening speed is within the protection scope of the invention.

Alternatively, the driving member is a driving gear 23, the driving gear 23 is connected to the second hinge plate 21 through a rotation shaft 24, and the driving gear 23 and the second hinge plate 21 can rotate relatively, the driving gear 23 can rotate around the rotation shaft 24, and the second hinge plate 21 can also rotate around the rotation shaft 24.

The driving gear 23, the driven gear 22 and the second end 302 of the link 30 are connected by the rotation shaft 25, the driving gear 23 is rotatable about the rotation shaft 25, the driven gear 22 is rotatable about the rotation shaft 25, and the second end 302 of the link 30 is rotatable about the rotation shaft 25.

The distance between the rotation center of the driving gear 23 and the rotation shaft 24 is greater than the distance between the rotation center of the second hinge plate 21 and the rotation shaft 24, so that the second hinge plate 21 drives the driving gear 23 to rotate.

Specifically, the distance between the rotation axis 25 of the driving gear 23 and the rotation axis 24 is greater than the distance between the rotation center of the second hinge plate 21 and the rotation axis 24, so that the arm of force of the driving gear 23 is large, and thus the driven gear 22 is driven by the driving gear 23, not by the second hinge plate 21.

Alternatively, as shown in fig. 14, the radius of the driving gear 23 is larger than the radius of the driven gear 22.

The second hinge plate 21 drives the driving gear 23 to rotate through the rotating shaft 24, and the driving gear 23 drives the driven gear 22 to rotate through the rotating shaft 25. The link 30 defines a revolution of both the driving gear 23 and the driven gear 22 about the first end 301 of the link 30. The radius of the driving gear 23 is larger than the radius of the driven gear 22, and thus the rotational speed of the driving gear 23 about the rotational axis 25 is smaller than the rotational speed of the driven gear 22 about the rotational axis 25. The driven gear 22 is meshed with the second hinge plate 21 to drive the second hinge plate 21 to rotate along a preset direction so as to compensate the revolution speed of the second hinge plate 21 around the rotation shaft 25, and the door body 102 is rotated while moving outwards.

Optionally, the second hinge plate 21 is provided with a rotation hole 102, and the rotation shaft 24 is located in the rotation hole 102, so that the second hinge plate 21 is rotatably connected with the rotation shaft 24.

The rotating shaft is connected with the rotating shaft, and the axes are not coincident.

The rotating member rotates around the rotating shaft, the door body drives the second hinge plate to rotate around the rotating shaft (autorotation) under the action of the door opening force, the second end of the connecting rod is rotationally connected with the rotating shaft, the rotating shaft is connected with the rotating shaft, and the axes are not coincident, so that the second end of the connecting rod is staggered with the autorotation center (positioned on the axis of the rotating shaft) of the second hinge plate, and the movement track of the door body which moves outwards and rotates in the application is realized.

The door opening and closing device further comprises a swing rod 26, and the rotating shaft 24 is arranged at one end of the swing rod 26 and is in rotating connection with one end of the swing rod 26, so that the swing rod 26 is in rotating connection with the rotating shaft 24.

As shown in fig. 14, the driving gear 23 is disposed at the other end of the swing link 26 and is fixedly connected to the other end of the swing link 26, so that the driving gear 23 is rotatably connected to the rotation shaft 24 through the swing link 26.

The swing link 26 is disposed such that the distance between the rotation center of the driving gear 23 and the rotation shaft 24 is greater than the distance between the rotation center of the second hinge plate 21 and the rotation shaft 24.

In this solution, the rotation center of the driving gear 23 is the vertical distance between the axis of the driving gear 23 and the rotation shaft 24, and is the axial distance between the rotation shaft and the rotation shaft in fig. 7; the second hinge plate 21 is sleeved outside the rotating shaft 24 and rotates around the rotating shaft 24, so that the rotation center of the second hinge plate 21 is located on the axis of the rotating shaft 24, and the distance between the rotation center of the second hinge plate 21 and the rotating shaft 24 is zero.

Optionally, the door opening and closing device further comprises a guide part, the guide part is arc-shaped, the arc-shaped circle center is located on the axis of the rotating shaft, and the transmission assembly moves along the length direction of the guide part in the door opening process so as to guide the transmission assembly to revolve around the rotating shaft, so that the transmission assembly can drive the second end of the connecting rod to swing outwards in the door opening process.

Optionally, the guide part comprises a first guide part, the first guide part is matched with the rotary part, and the rotary part rotates around the rotating shaft along the surface of the first guide part in the door opening process so as to guide the rotary part to revolve around the rotating shaft, thereby driving the second end of the connecting rod to rotate around the rotating shaft, and realizing outward swinging of the second end of the connecting rod when the door is opened under the action of door opening force.

Optionally, a first guide portion is provided on the first hinge plate 10, and the first guide portion cooperates with the driven gear 22, and is also capable of guiding the driven gear 22 to move with the second hinge plate 21 during the door opening process.

During the door opening process, the second hinge plate 21 moves with the door body 102. The driven gear 22 cooperates with the first guide portion, and the first guide portion guides the driven gear 22 to move along with the second hinge plate 21, so that the driven gear 22 can be always meshed with the gear teeth 216 on the second hinge plate 21, so as to drive the second hinge plate 21 to rotate along a preset direction.

Alternatively, the first guide portion is a first arc-shaped rack 106 provided on the first hinge plate 10 to extend in a direction from the body 103 to the door 102, and the first arc-shaped rack 106 is engaged with the driven gear 22 to move the driven gear 22 along the first arc-shaped rack 106.

As shown in fig. 1 to 5, in the door-closed position, the driven gear 22 is located at an end of the first curved rack 106 near the body 103. In the door opening process, the driven gear 22 is meshed with the first arc-shaped rack 106, and moves along the length direction of the first arc-shaped rack 106, so that the driven gear 22 can be meshed with the second hinge plate 21 all the time. In the half-open door position, as shown in fig. 6-9, the driven gear 22 moves to the middle of the first curved rack 106. In the fully open door position, as shown in fig. 10-13, the driven gear 22 moves to an end of the first arcuate rack 106 adjacent the door body 102.

The center of the circle of the first arc-shaped rack 106 is located on the axis of the rotating shaft 40, so that the driven gear 22 revolves around the rotating shaft 40.

Optionally, the guiding part further includes a second guiding part, the second guiding part is matched with the driving part, and the driving part rotates around the rotating shaft along the surface of the second guiding part in the door opening process so as to guide the driving part to revolve around the rotating shaft, so that the driving part and the rotating part can both revolve around the rotating shaft and can be always connected through the rotating shaft.

Alternatively, the second guide portion is a second arc-shaped rack 107 provided for the first hinge plate 10 to extend in a direction from the body 103 to the door body 102, and the second arc-shaped rack 107 is engaged with the driving gear 23 to move the driving gear 23 along the second arc-shaped rack 107.

In the closed door position, the drive gear 23 is located at an end of the second arcuate rack 107 adjacent the body 103. In the door opening process, the driving gear 23 is meshed with the second arc-shaped rack 107 and moves along the length direction of the second arc-shaped rack 107, so that the driving gear 23 and the driven gear 22 can be always connected through the rotating shaft 25. In the door open position, the drive gear 23 moves to an end of the second arcuate rack 107 adjacent the door body 102.

The center of the circle where the second arc-shaped rack 107 is located on the axis of the rotating shaft 40, and the first arc-shaped rack 106 and the second arc-shaped rack 107 are concentrically arranged, so that the driving gear 23 revolves around the rotating shaft 40. Further, since the radius of the driven gear 22 is smaller than the radius of the driving gear 23, the rotation speed of the driven gear 22 around the rotation axis 25 is greater than the rotation speed of the driving gear 23 around the rotation axis 25.

The first hinge plate 10 includes a first fixing portion 103, a rotation shaft mounting portion 104, and a rack setting portion 105 connected. As shown in fig. 14, the first fixing portion 103 is fixedly connected to the body 103, and the first screw hole 101 is provided in the first fixing portion 103, thereby fixedly connecting the first hinge plate 10 to the body 103. The shaft mounting portion 104 is connected to the first fixing portion 103, the shaft 40 is disposed on the shaft mounting portion 104, specifically, a rotation hole 102 is disposed on a mating portion of the shaft 40, and the shaft 40 is disposed in the rotation hole 102 and is rotationally connected to the rotation hole 102. Alternatively, the shaft mounting portion 104 is located on a side of the first fixing portion 103 facing away from the body 103, so that the transmission assembly 2 has a larger installation space. The rack setting portion 105 is located at one side of the rotation shaft mounting portion 104, and the first arc-shaped rack 106 and the second arc-shaped rack 107 are provided at the rack setting portion 105. The first arc-shaped rack 106 and the second arc-shaped rack 107 are sequentially arranged along the up-down direction, and as shown in the figure, the first arc-shaped rack 106 is located above the second arc-shaped rack 107.

The second hinge plate 21 includes a second fixing portion 212 and a rotating portion 213 that are connected, the second fixing portion 212 is fixedly connected to the door body 102, and as shown in fig. 14, a second screw hole 211 is provided in the second fixing portion 212, thereby realizing the fixed connection of the second hinge plate 21 to the door body 102. The rotating portion 213 is located at a side of the second fixing portion 212 facing away from the door 102 and is disposed near the rotating shaft mounting portion 104. The rotating portion 213 is provided with a through hole 214, the rotating shaft 24 passes through the through hole 214 and rotates relative to the through hole 214, the rotating portion 213 is rotatably connected with the rotating shaft 24, and the second hinge plate rotates around the rotating shaft.

The first end 301 of the link 30 is provided with a first link aperture 303 and the second end 302 is provided with a second link aperture 304. The rotation shaft 25 sequentially passes through the driving gear 23, the driven gear 22 and the second connecting rod hole 304, so that the connecting rod 30, the driven gear 22 and the driving gear 23 can mutually and freely rotate. The rotating shaft 40 passes through the first connecting rod hole 303, so that the connecting rod 30 and the first hinge plate 10 can freely rotate.

The door opening process of the present application is specifically described below with reference to the accompanying drawings:

when the door body 102 is pulled, the door body 102 drives the second hinge plate 21 to rotate clockwise, the second hinge plate 21 drives the driving gear 23 to rotate clockwise along the second arc-shaped rack 107 through the rotating shaft 24, and the second hinge plate 21 swings outwards; because the driving gear 23 is connected with the driven gear 22 through the rotating shaft 25, the driven gear 22 rolls clockwise along the first arc-shaped rack 106, the connecting rod 30 limits the driving gear 23 and the driven gear 22 which are arranged on the rotating shaft 25 to revolve around the rotating shaft 40, and the diameter of the driven gear 22 is smaller than that of the driving gear 23, so that the driven gear 22 rotates faster than the driving gear 23 around the rotating shaft 25, and the second hinge plate 21 is driven to rotate anticlockwise so as to compensate the revolution speed of the second hinge plate 21 around the rotating shaft 25, and the door body 102 can rotate while translating outwards.

When the door is closed, the door body drives the second hinge plate to rotate anticlockwise, the driving gear 23 is driven to rotate anticlockwise along the second arc-shaped rack 107, and the second hinge plate 21 swings inwards; because the driving gear 23 is connected with the driven gear 22 through the rotating shaft 25, the driven gear 22 rolls along the first arc-shaped rack 106 anticlockwise at the same time, the connecting rod 30 limits the driving gear 23 and the driven gear 22 which are arranged on the rotating shaft 25 to revolve around the rotating shaft 40, and the diameter of the driven gear 22 is smaller than that of the driving gear 23, so that the driven gear 22 rotates faster than the driving gear 23 around the rotating shaft 25, and the second hinge plate 21 is driven to rotate clockwise so as to compensate the revolution speed of the second hinge plate 21 around the rotating shaft 25, and the door body 102 can rotate while translating inwards.

An embodiment of the second aspect of the present application provides a refrigerator 100 including a body 103, a door body 102, and a door opening and closing device for the refrigerator 100 as in any of the above embodiments.

The door body 102 is rotatably connected with the body 103 to open or close the body 103; the first hinge plate 10 is connected to the body 103, and the second hinge plate 21 is connected to the door body 102.

The refrigerator 100 provided by implementation of the second aspect of the present application, because of including the door opening and closing device according to any one of the above embodiments, has all the advantages of the door opening and closing device according to any one of the above embodiments, and is not described herein again.

The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may include structural and other modifications. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A door opening and closing device for a refrigerator, wherein the refrigerator comprises a door body and a body, and the door body is rotatably connected with the body to open or close the body; the door opening and closing device includes:

a first hinge plate adapted to be connected to the body;

the second hinge plate is suitable for being connected with the door body and is rotationally connected with the first hinge plate;

the rotating member is matched with the second hinge plate and is used for driving the second hinge plate to rotate along a preset direction, wherein the preset direction is opposite to the direction in which the door body drives the second hinge plate to rotate when the door is opened.

2. The door opening and closing device for a refrigerator according to claim 1, wherein,

the rotating member is attached to the second hinge plate and can rotate relatively, and the rotating axis of the rotating member is not overlapped with the rotating axis of the second hinge plate.

3. The door opening and closing device for a refrigerator according to claim 2, wherein,

the rotary part is a driven gear, the second hinge plate is provided with gear teeth, and the driven gear is meshed with the gear teeth to drive the second hinge plate to rotate along the preset direction.

4. A door opening and closing device for a refrigerator according to claim 3, wherein,

the pitch circle radius of the driven gear is smaller than the pitch circle radius of the gear teeth.

5. The door opening and closing device for a refrigerator as claimed in claim 3, further comprising:

the driving gear is connected with the second hinge plate through a rotating shaft, the driving gear and the second hinge plate can rotate relatively, the second hinge plate drives the driving gear to rotate in the door opening process, and the driving gear drives the driven gear to rotate;

the driving gear and the driven gear are connected through a rotating shaft in a shaft mode, and rotate around the rotating shaft, and the radius of the driving gear is larger than that of the driven gear.

6. The door opening and closing device for a refrigerator according to claim 5, wherein,

the second hinge plate is provided with a through hole, and the rotating shaft is positioned in the through hole so that the door body drives the second hinge plate to rotate around the rotating shaft under the action of door opening force;

the rotating shaft is connected with the rotating shaft, and the axes of the rotating shaft and the rotating shaft are not coincident.

7. The door opening and closing device for a refrigerator according to claim 5, wherein,

the distance between the rotation center of the driving gear and the rotation shaft is greater than the distance between the rotation center of the second hinge plate and the rotation shaft, so that the second hinge plate drives the driving gear to rotate, and the driving gear drives the driven gear to rotate.

8. The door opening and closing device for a refrigerator as claimed in claim 7, further comprising:

the rotating shaft is arranged at one end of the swinging rod and is rotationally connected with the one end of the swinging rod, and the rotating shaft is arranged at the other end of the swinging rod, so that the distance between the rotating center of the driving gear and the rotating shaft is larger than the distance between the rotating center of the second hinge plate and the rotating shaft.

9. A door opening and closing device for a refrigerator according to any one of claims 1 to 8, wherein,

the first hinge plate is provided with a guide part, and the guide part is matched with the rotary part and is used for guiding the rotary part to move along with the second hinge plate in the door opening process so that the rotary part is always matched with the second hinge plate.

10. A refrigerator, comprising:

a body;

the door body is rotationally connected with the body to open or close the body;

the door opening and closing device for a refrigerator as claimed in any one of claims 1 to 9, wherein a first hinge plate is connected to the body, and a second hinge plate is connected to the door body.