CN115682594A - Refrigerator - Google Patents

Abstract

The invention provides a refrigerator, and belongs to the technical field of household appliances. The refrigerator comprises a hinge plate; the door body can rotate relative to the hinge plate to open or close the storage chamber, and the door body is provided with a front wall and a side wall close to the hinge plate; a first hinge shaft and a first track groove; a second hinge shaft and a second track groove; when the door body is opened from a closed state to a second state, the second state is smaller than 90 degrees, the first hinge shaft moves in the first track groove, and meanwhile, the second hinge shaft moves in the second track groove so that the door body moves inwards for a certain distance; in the process, the movement locus of the first hinge shaft relative to the first locus groove comprises a first curve, and the movement locus of the second hinge shaft relative to the second locus groove comprises a second curve, wherein the first curve and the second curve respectively comprise at least two curve segments with the curvature changing in a reducing mode. The hinge structure of the refrigerator ensures that the door body does not exceed or excessively exceeds the side surface of the refrigerator body when being opened.

Description

Refrigerator

Technical Field

The invention relates to the technical field of household appliances, in particular to a refrigerator.

Background

In the related art, most of hinge structures of refrigerator doors are in a single-shaft form, the doors rotate around hinge shafts through the cooperation of the hinge shafts and shaft sleeves of the doors, and corners of the doors can exceed the side faces of a refrigerator body in the door opening process of the doors of the hinge structures.

For the embedded refrigerator, the refrigerator is generally placed in a cabinet, and during the process of opening the door to 90 degrees, the corner of the door body cannot exceed the size of the refrigerator body too much, so that the use of the refrigerator is limited.

Disclosure of Invention

The present invention solves at least one of the technical problems of the related art to some extent.

Therefore, the present application is directed to providing a refrigerator having a hinge structure such that a door does not extend beyond or excessively extends beyond a side of a cabinet when the door is opened.

The refrigerator according to the application comprises: a case formed with a storage chamber; the hinge plate is fixedly arranged on the box body; the door body can rotate relative to the hinge plate to open or close the storage chamber, and the door body is provided with a front wall and a side wall close to the hinge plate; the first hinge shaft is positioned on one of the door body and the hinge plate, and the first track groove is positioned on the other of the door body and the hinge plate; the second hinge shaft is positioned on one of the door body and the hinge plate, and the second track groove is positioned on the other of the door body and the hinge plate; when the door body is opened from a closed state to a second state, the second state is smaller than 90 degrees, the first hinge shaft moves in the first track groove, and meanwhile, the second hinge shaft moves in the second track groove so that the door body moves inwards for a certain distance; in the process, the movement locus of the first hinge shaft relative to the first locus groove comprises a first curve, and the movement locus of the second hinge shaft relative to the second locus groove comprises a second curve, wherein the first curve and the second curve respectively comprise at least two curve segments with the curvature changing in a reducing mode.

The refrigerator of this application is opening the curve orbit that first hinge pin and second hinge pin moved when the second state includes two sections curvatures at least and is reducing the curve segmentation that changes through setting up the door body for the distance that the inboard removed diminishes in the unit angle of door body, and the door body is at the rotatory in-process that opens the door and inwards remove, and the motion slows down, guarantees the smoothness nature of the door body at the motion process.

In some embodiments of the refrigerator, with reference to the moving direction of the first hinge shaft and the second hinge shaft when the door body is opened, the first curve comprises a first curve segment and a third curve segment which are connected in sequence, and the second curve comprises a second curve segment and a fourth curve segment which are connected in sequence; the curvature of the third curve segment is smaller than that of the first curve segment, and the curvature of the fourth curve segment is smaller than that of the second curve segment.

In some embodiments of the refrigerator of the present application, when the first hinge axis moves along the first curved segment and the second hinge axis moves along the second curved segment, the inward movement distance of the door body when the door body is opened by a unit angle is d1, and when the first hinge axis moves along the third curved segment and the second hinge axis moves along the fourth curved segment, the inward movement distance of the door body when the door body is opened by a unit angle is d2, and then d2 is less than d1.

In some embodiments of the refrigerator of the present application, the curvatures of the first curve and the second curve, respectively, are gradually reduced.

In some embodiments of the refrigerator of the present application, when the first track groove and the second track groove are disposed on the door body, the first curve extends in a direction close to the front wall and close to the side wall, and the second curve extends in a direction away from the front wall and close to the side wall.

In some embodiments of the refrigerator, when the door body is in a closed state and the first hinge shaft and the second hinge shaft are arranged on the hinge plate, the first hinge shaft is closer to the side wall and farther away from the front wall than the second hinge shaft.

In some embodiments of the refrigerator of the present application, in a process that the door body is opened from the closed state to the second state, the first hinge shaft moves along the first straight line and the first curved line in sequence relative to the first track groove, the second hinge shaft moves along the second straight line and the second curved line in sequence relative to the second track groove, and the first straight line extends in a direction away from the front wall and close to the side wall when the first track groove is formed in the door body, so that the door body moves a distance to the inner side and moves a distance to the front side.

In some embodiments of the refrigerator, when the door body is in a closed state, the first hinge shaft is located at an end of the first track groove, the second hinge shaft is located at an end of the second track groove, and a gap is formed between the second hinge shaft and the end of the second track groove.

In some embodiments of the refrigerator, when the door body is opened by 90 degrees, a gap is formed between the front wall of the door body and the side face of the refrigerator body in the vertical direction.

In some embodiments of the refrigerator, a limiting structure for limiting the door body to be opened to the maximum angle is arranged between the door body and the hinge plate.

Drawings

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

Fig. 1 is a perspective view of a refrigerator according to an embodiment of the present application;

fig. 2 is a plan view of a refrigerator according to an embodiment of the present application;

FIG. 3 is an enlarged view of A of FIG. 2;

fig. 4 is an exploded view of a hinge at an upper right corner of a refrigerator according to an embodiment of the present application;

FIG. 5 is a bottom view at a hinge of a lower end of a door body of a refrigerator according to an embodiment of the present application;

fig. 6 is an exploded view of a hinge at a lower end of a door body of a refrigerator according to an embodiment of the present application;

fig. 7 is a relative position view of a first hinge shaft and a second hinge shaft of a refrigerator according to an embodiment of the present application;

fig. 8 is a view of a hinge when a door of a refrigerator according to an embodiment of the present application is in a closed state;

FIG. 9 is a view taken at the hinge of FIG. 8;

FIG. 10 is a second view of FIG. 8 at the hinge;

fig. 11 is a view of a door body of a refrigerator according to an embodiment of the present application in a first state;

fig. 12 is a view of a door body of a refrigerator according to an embodiment of the present application between a first state and a second state;

fig. 13 is a view of a door body of a refrigerator according to an embodiment of the present application in a second state;

fig. 14 is a view of a door of a refrigerator according to an embodiment of the present application in a 90 ° open state;

fig. 15 is a view of a door of a refrigerator according to an embodiment of the present application in a maximum opening state;

fig. 16 is a view of another example of a hinge shaft of a refrigerator according to an embodiment of the present application;

fig. 17 is a second exploded view of a hinge at the upper right corner of the refrigerator according to the embodiment of the present application;

fig. 18 is a perspective view of an upper mounting block of a refrigerator according to an embodiment of the present application;

fig. 19 is an exploded view of a hinge at a lower end of a door body of a refrigerator according to an embodiment of the present application;

fig. 20 is a perspective view of a lower mounting block of a refrigerator according to an embodiment of the present application;

FIG. 21 is a view at a hinge of a lower end of a door body of a refrigerator according to an embodiment of the present application;

fig. 22 is a first view of another example of a door body of a refrigerator according to an embodiment of the present application;

fig. 23 is a second view of another example of the door body of the refrigerator according to the embodiment of the present application;

in the above figures: 1. a refrigerator;

10. a box body; 20. a storage chamber; 21. an upper storage chamber; 22. a lower storage chamber;

30. a door body; 301. a door shell; 302. a boss portion; 303. a first boss portion; 304. a second boss portion; 31. a front wall; 32. a side wall; 33. a lateral edge; 34. an upper accommodating groove; 36. a lower accommodating groove; 37. a first convex portion; 38. a second convex portion; 39. a clearance groove;

40. a hinge plate; 401. a connecting portion; 402. an extension portion; 403. a stopper portion; 41. a first hinge axis; 42. a second hinge axis;

50. a first track groove; 51. a first positioning position; 512. a first straight line; 52. a second location position; 523. a first curve; 5231. a first curve segment; 5232. segmenting a third curve; 53. a third positioning position; 534. a fourth curve; 54. a first termination location;

60. a second track groove; 61. a first guiding position; 612. a second straight line; 62. a second guiding position; 623. a second curve; 6231. a second curve segment; 6232. a fourth curve segment; 63. a third guiding position; 634. a third curve; 64. a fourth guide position; 645. a fifth curve; 65. a second termination location;

70. mounting blocks; 71. an upper mounting block; 711. a plate body; 712. an extension portion; 72. a lower mounting block; 721. a latch hook; 7211. a root portion; 7212. a hook part;

80. a limiting block; 81. an embedding part; 82. a limiting part; 83. a reinforcing portion;

90. a shaft sleeve; 100. a cabinet.

Detailed Description

The invention is described in detail below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

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

The terms "first", "second", "third", "fourth", "fifth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any indication of the number of technical features indicated. Thus, features defined as "first", "second", "third", "fourth", "fifth" may explicitly or implicitly include one or more of the features.

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

Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings. In the drawings, it is defined that a side of the refrigerator facing a user when it is used is a front side and an opposite side is a rear side.

Referring to fig. 1, a refrigerator 1 may include: a cabinet 10 having a storage chamber 20, a door 30 connected to the cabinet 10 to open and close the storage chamber 20, and a cool air supply device supplying cool air to the storage chamber 20.

The cool air supply device may include an evaporator, a compressor, a condenser, and an expansion device, and may generate cool air by using latent heat of evaporation of the refrigerant.

The case 10 may include: an inner case defining a storage chamber 20; an outer case coupled to an outer side of the inner case to form an external appearance of the refrigerator 1; and an insulator provided between the inner and outer cases to insulate the storage compartment 20.

The case 10 may include: a horizontal partition plate dividing the storage chamber 20 into an upper storage chamber 21 and a lower storage chamber 22, and a vertical partition plate dividing the lower storage chamber 22 from side to side. The upper storage chamber 21 may be used for a refrigerating chamber for storing food in a refrigerating mode by maintaining air at a temperature of about 0 to 5 c, and the lower storage chamber 22 may be used for a freezing chamber for storing food in a freezing mode by maintaining air at a temperature of 0 to-30 c.

The storage chamber 20 may have an open front to allow food to be received and taken out, and the open front of the storage chamber 20 may open and close the storage chamber 20 by the rotatable door body 30.

The door body 30 may be rotatably supported by hinges located at an upper portion and hinges located at a lower portion.

Referring to fig. 2 to 6, the hinge may include a first hinge shaft 41, a second hinge shaft 42, a first track groove 50, and a second track groove 60; the first hinge shaft 41 is adapted to the first track groove 50, the second hinge shaft 42 is adapted to the second track groove 50, and the first hinge shaft 41 moves relative to the first track groove 50 and the second hinge shaft 42 moves relative to the second track groove 60 during the opening or closing of the door 30.

The hinge may include a hinge plate 40 fixedly coupled to the case 10, and the hinge plate 40 may include: a connection part 401 connected to the case 10; and an extension 402 extending forward from the connection part 401 and having a horizontal plate shape. The connection portion 401 may be fastened to the case 10 by a fastener such as a screw, a pin, and a bolt.

Referring to fig. 3 and 4 in particular, the hinge at the upper end of the door 30 may include a hinge plate 40 connected to the upper end of the case 10, and a first hinge shaft 41 and a second hinge shaft 42 connected to the hinge plate 40 to form a rotation axis. The hinge plate 40, the first hinge shaft 41, and the second hinge shaft 42 may be integrally formed, but unlike this, the hinge plate 41, the first hinge shaft 41, and the second hinge shaft 42 may be separately provided and assembled with each other.

The first and second hinge shafts 41 and 42 may be formed on the extension 402 and vertically extend downward.

Referring to fig. 5 and 6, in the hinge at the lower end of door 30, connection portion 401 is connected to the front end surface of cabinet 10. The first and second hinge shafts 41 and 42 extend upward on the hinge plate 40.

The upper and lower ends of the door 30 are provided with a first track groove 50 and a second track groove 60 corresponding to the position of the hinge plate 40.

For convenience of description, a side surface of the left and right side surfaces of the door 30, which is close to the hinge plate 40, is referred to as a side wall 32, for example, when the hinge plate 40 is located at the right side of the cabinet 10, the right side surface of the door 30 is the side wall 32; when the hinge plate 40 is located at the left side of the cabinet 10, the left side surface of the door 30 is the side wall 32. The front wall 31 and the side walls 32 of the door body 30 meet to form side edges 33.

In general, with reference to fig. 2, a plane of the side surface of the cabinet 10 close to the hinge plate 40 is defined as a reference plane O, one side of the reference plane O close to the cabinet is an outer side, and the other side opposite to the outer side is an inner side, and when the refrigerator is placed in the cabinet 100 for use, the cabinet is usually set at a distance α =5mm from the side surface of the refrigerator (the reference plane O) in order to prevent the floor unevenness of a user and deformation of the cabinet. In order to ensure that door 30 of the refrigerator is normally opened, side edge 33 of door 30 cannot extend too far beyond the side surface (reference plane O) of cabinet 10 during rotation, otherwise, side edge 33 collides with cabinet 100 and cannot be normally opened.

Therefore, it is required that the door 30 is moved inward during the rotation so that the side edge 33 does not protrude too much beyond the side of the cabinet 10. The hinge plate 40 is arranged on the right side of the door body 30, and the inner side is the left side, that is, the door body 30 can move towards the left side; the hinge plate 40 is located on the left side of the door 30, and the inner side is the right side, that is, the door 30 can move to the right side.

Due to the relative motion relationship between the first track groove 50 and the first hinge shaft 41 and between the second track groove 60 and the second hinge shaft 42, if the door 30 is opened and the first track groove 50 and the second track groove 60 are stationary references, it is equivalent to the first hinge shaft 41 moving in the first track groove 50 and the second hinge shaft 42 moving in the second track groove 60. For convenience of description, the present application will be described in a manner that the first and second track grooves 50 and 60 are references, and the first and second hinge shafts 41 and 41 move relative to the references:

in some embodiments of the present application, when the door 30 is rotated to open to 90 ° from the closed state, the first hinge shaft 41 extends in a direction substantially close to the side wall 32 and the front wall 31 relative to the motion trajectory of the first trajectory groove 50, and the second hinge shaft 41 extends in a direction substantially away from the front wall 31 and close to the side wall 32 relative to the motion trajectory of the second trajectory groove 60, so that the door 30 moves inward for a certain distance while rotating, thereby avoiding the problem that the side edge 33 exceeds the reference plane O and interferes with the cabinet to prevent the cabinet from being opened normally during the opening process of the door 30.

Referring to fig. 7, an example of the relative positions of the first and second hinge axes 41 and 42 is shown: when the door 30 is in the closed state, the first hinge axis 41 is closer to the side wall 32 and farther from the front wall 31 than the second hinge axis 42. The vertical distance L1 between the first hinge shaft 41 and the second hinge shaft 42 in the front-back direction is equal to or less than 2.5mm and equal to or less than L1 and equal to or less than 10mm, the vertical distance L2 between the first hinge shaft 41 and the second hinge shaft 42 in the left-right direction is equal to or less than 7.5mm and equal to or less than L2 and equal to or less than 30mm, in the current example, L1=5mm, L2=15mm, and the thickness of the door body 30 is between 44mm and 53mm, so that the distance between the corner of the door body 30 and the side of the box body 10 is smaller, specifically smaller than 3mm, in the door opening process.

In some embodiments of the present application, referring to fig. 8, when the door 30 is in the closed state, the first hinge shaft 41 is located at an end of the first track groove 50, and the second hinge shaft 42 is located at an end of the second track groove 60, so that starting ends of the first track groove 50 and the second track groove 60 can be determined, the first track groove 50 extends from the starting end to the other end in a direction close to the side wall 32 and the front wall 31, and the second track groove 60 extends from the starting end to the other end in a direction away from the front wall 31 and close to the side wall 32. The first and second tracking grooves 50 and 60 extend toward the side wall 32 to allow the door 30 to move inward relative to the hinge plate 40.

In some embodiments, referring to fig. 9, a gap δ is provided between the second hinge shaft 42 and an end wall of the second track groove 60 when the door 30 is in the closed state, so that the door 30 is prevented from contacting a starting end of the second track groove 60 and bouncing the door 30 when being forcibly thrown.

The following describes a detailed process of the door 30 being rotated to open from the closed state:

first stage

Referring to fig. 10, the first track groove 50 has a first positioning position 51 and a second positioning position 52, and the movement locus of the first hinge shaft 41 from the first positioning position 51 to the second positioning position 52 in the first track groove 50 is a first positioning track line; accordingly, the second track groove 60 has a first guide position 61 and a second guide position 62, and the movement track of the second hinge shaft 42 from the first guide position 61 to the second guide position 62 in the second track groove 60 is a first guide track line.

Referring to fig. 11, when the door 30 rotates from the closed state to the first state, the first hinge shaft 41 moves relative to the first track groove 50 from the first positioning position 51 to the second positioning position 52 along the first positioning track line; at the same time, the second hinge axis 42 is moved relative to the second slot track 60 from the first guide position 61 along the first guide track line to the second guide position 62.

Wherein the second positioning position 52 is far away from the front wall 31 and close to the side wall 32 than the first positioning position 51, and the first positioning trajectory line extends in a direction far away from the front wall 31 and close to the side wall 32, so that the first hinge shaft 41 moves in a direction close to the side wall 32 and far away from the front wall 31, which is equivalent to the door 30 with the first trajectory groove 50 moves a first distance in a direction far away from the side wall 32 (inner side) and moves a distance in a direction close to the front wall 31 (front side), and the door 30 moves in an inner side to avoid the side edge 33 from exceeding the side of the box 10 to touch the cabinet; since the right rear end of the door 30 rotates backward relative to the first hinge shaft 41 when the door 30 is just opened, and the door seal 30a on the door 30 contacts and rubs against the front side of the cabinet 10 as the door 30 moves inward, the door 30 moves forward in the present application, so that friction between the door seal 30a and the front side of the cabinet 10 can be avoided, and the service life of the door seal 30a can be prolonged.

The second guiding position 62 is farther from the front wall 31 and closer to the side wall 32 than the first guiding position 61, and the first guiding locus extends in a direction farther from the front wall 31 and closer to the side wall 32.

In the current embodiment, the first positioning trace line is a first straight line 512 and the first guide trace line is a second straight line 612. However, in other embodiments, the first positioning trace line and the first guide trace line may also be a curvilinear pattern.

In the first state (fig. 11), the opening angle of the door 30 is about 5 to 10 °, and the side edge 33 extends about 2mm beyond the side surface β of the box 10.

In this stage, the included angle between the first straight line 512 and the second straight line 612 is greater than 45 °, so that the door body 30 can be prevented from shaking when the included angle between the first straight line 512 and the second straight line 612 is small and is close to parallel, and the stability of the door body 30 in the rotating process is ensured.

Second stage

Referring to fig. 10, the first slot 50 further has a third positioning position 53, and the movement locus of the first hinge shaft 41 from the second positioning position 52 to the third positioning position 53 in the first slot 50 is a second positioning track line; accordingly, the second track groove 60 further has a third guide position 63, and the movement locus of the second hinge shaft 42 from the second guide position 62 to the third guide position 63 in the second track groove 60 is a second guide locus line.

Referring to fig. 13, when the door 30 is opened from the first state to the second state, the second state is less than 90 °, the first hinge shaft 41 moves relative to the first track groove 50 from the second positioning position 52 to the third positioning position 53 along the second positioning track line, and the second hinge shaft 42 moves relative to the second track groove 60 from the second guiding position 62 to the third guiding position 63 along the second guiding track line.

The third positioning position 53 is closer to the front wall 31 and the side wall 32 than the second positioning position 52, and the second positioning track line extends from the second positioning position 52 to the third positioning position 53 in a direction close to the front wall 31 and the side wall 32, so that the door body 30 moves a second distance inward.

The third guiding position 63 is farther from the front wall 31 and closer to the side wall 32 than the second guiding position 62, and the second guiding locus extends in a direction farther from the front wall 31 and closer to the side wall 32.

In the current embodiment, the second positioning trajectory line is the first curve 523, and the second guiding trajectory line is the second curve 623. However, in other embodiments, the second positioning track line and the second guide track line can also be a straight line pattern.

When the door 30 is in the closed state, the curvature center of the first curve 523 is located at one side of the first curve 523 close to the front wall; the center of curvature of the second curve 623 is located on the side of the second curve 623 near the side edge.

The process that the inboard when this application was opened door body 30 and is removed divide into two different stages, follows linear motion to the first state promptly and along curvilinear motion second state, and the orbit is easily close the parallel and the problem that the door body 30 rocked appears when can avoiding the door body only to carry out the large-angle rotation along the straight line or only along the curve.

In the present embodiment, the side edge 33 of the door body 30 rotates on the outer side of the reference plane O and moves on the inner side in the process of opening the door body 30 from the closed state to the second state. In the process, the distance β between the side edge 33 and the reference plane O is always smaller than the distance α (5 mm) between the reference plane O and the cabinet, so that the side edge 33 does not touch the cabinet to cause interference, and meanwhile, the side edge 33 of the door 30 is located outside the reference plane O, thereby avoiding the problem that the door opening of the user is frustrated when the door 30 moves inwards by a large distance to the inside of the reference plane O.

In some embodiments, the distance from the second positioning position 52 to the third positioning position 53 is greater than the distance from the first positioning position 51 to the second positioning position 52, that is, the length of the first straight line 512 is smaller than the first curved line 523, and the length of the second straight line 612 is smaller than the second curved line 623, so that the first hinge shaft 41 and the second hinge shaft 42 only perform a linear movement for a small distance at the beginning, and perform a curved movement for a large angle at the end, the curved movement can ensure the fluency of the movement process of the door body 30, and avoid the door body 30 moving inwards along the linear movement to cause a user's feeling of pause and error.

In some embodiments of the second stage, the first curve 523 and the second curve 623 each include at least two curve segments with decreasing changes in curvature.

Therefore, the curvature of the curve is reduced, so that the distance of the door body 30 moving to the inner side in a unit angle is reduced, that is, the door body 30 moves slowly inwards in the process of rotating to open the door and moving inwards, and the smoothness of the door body 30 in the moving process is ensured.

Referring to fig. 12, 13, in some embodiments of varying curvature, first curve 523 comprises first and third curve segments 5231, 5232 connected in series, and second curve 623 comprises second and fourth curve segments 6231, 6232 connected in series; the curvature of the third curved segment 5232 is smaller than that of the first curved segment 6231 and the curvature of the fourth curved segment 6232 is smaller than that of the second curved segment 6231.

When the first hinge axis 41 moves along the first curved section 5231, the second hinge axis 42 moves along the second curved section 6231, and during this process, the door 30 moves inward by a distance d1 when opening a unit angle; the second hinge axis 42 moves along the fourth curvilinear section 6232 while the first hinge axis 41 continues to move along the third curvilinear section 5232, during which the door 30 moves inward a distance d2 at an opening unit angle, d2 < d1. As a specific example, d2 may be 1/2 of d1.

In other embodiments, the first curve 523 and the second curve 623 may further include three or more curve segments with decreasing curvature.

In other embodiments with changing curvatures, the curvatures of the first curve 523 and the first curve 623 are respectively gradually reduced, so that it can also be ensured that the movement of the door body 30 is slowed down in the process of inward movement of the door body during rotating opening, and the smoothness of the door body 30 in the movement process is ensured.

Third stage

Referring to fig. 14, when the door 30 is opened to 90 ° from the second state, the door 30 only performs a rotation movement, the position of the first hinge shaft 41 in the first track slot 50 is not changed, the door 30 rotates around the first hinge shaft 41, and the second hinge shaft 42 moves along the third guide track line to the fourth guide position 64 in the second track slot 60. The third guide path line is arcuate, and the fourth guide position 64 is farther from the front wall 31 and closer to the side wall 32 than the third guide position 63.

In some embodiments, when the door 30 is in the 90 ° open state, the front wall 31 or the side edge 33 of the door 30 has a vertical gap γ with the side surface (reference plane O) of the cabinet 10, that is, the front wall 31 of the door 30 is located inside the reference plane O and the distance γ from the front wall 31 to the reference plane O is greater than 0, so that the door 30 can continue to open a small angle without interfering with the cabinet. In the present example, the door 30 can be opened at > 90 ° and approximately 105 ° to 110 ° when the refrigerator is disposed in the cabinet.

To allow for a greater angle of opening of the refrigerator when not in use in a cabinet, the present embodiment extends the first and second tracking slots 50 and 60:

fourth stage

Referring to fig. 10, the first slot 50 further has a first end position 54, and the movement locus of the first hinge shaft 41 from the third positioning position 53 to the first end position 54 within the first slot 50 is a third positioning locus; accordingly, the second track groove 60 also has a second end position 65, and the movement track of the second hinge shaft 42 from the fourth guide position 64 to the second end position 65 in the second track groove 60 is a fourth guide track line.

Referring to fig. 15, when the door 30 is opened from 90 °, the first hinge shaft 41 moves along the third positioning path line from the third positioning position 53 to the first end position 54 with respect to the first track groove 50, and the second hinge shaft 42 moves along the fourth guiding path line from the fourth guiding position 64 to the second end position 65 with respect to the second track groove 60.

Wherein the first end position 54 is closer to the front wall 31 and the side wall 32 than the third positioning position 53, and the third positioning track line extends from the third positioning position 53 to the first end position 54 in a direction close to the front wall 31 and the side wall 32; the second termination point 65 is closer to the front wall 31 and the side wall 32 than the fourth guide location 64, and the fourth guide track line extends from the fourth guide location 64 toward the front wall 31 and the side wall 32 to the second termination point 65.

In the above description, the extending direction of the trajectory line is referred to a moving direction of the first hinge shaft 41 with respect to the first track groove 50 or a moving direction of the second hinge shaft 42 with respect to the second track groove 60 during the opening of the door body 30.

In the current embodiment, the third positioning trace line is a fourth curve 534 and the fourth guiding trace line is a fifth curve 645. However, in other embodiments, the third positioning trace line and the fourth guide trace line may also be a straight line pattern.

If the motion trajectory at this stage is still the same as the previous stage: the door 30 only rotates, and the phenomenon that the movement trends of the first hinge shaft 41 and the second hinge shaft 42 are parallel and the door 30 shakes easily occurs in a longer rotation range, so that the side edge of the door 30 moves forwards and inwards for a certain distance during rotation at this stage, and an included angle exists between the movement track of the first hinge shaft 41 and the movement track of the second hinge shaft 42 at any point.

Specifically, the included angle between the tangent lines of the motion trail of the first hinge shaft 41 and the motion trail of the second hinge shaft 42 at any corresponding point is greater than 30 degrees, so that the motion stability of the door body 30 is ensured.

In some embodiments of the present application, since the first hinge shaft 41 mainly plays a positioning role, the second hinge shaft 42 mainly plays a guiding role, and of the two hinge shafts, the first hinge shaft 41 is a main shaft, the second hinge shaft 42 is an auxiliary shaft, and the acting force is mainly concentrated on the main shaft, accordingly, the length of the first hinge shaft 41 is set to be greater than that of the second hinge shaft 42, and accordingly, the first track groove 50 is deeper than the second track groove 60, which can avoid the waste of material cost caused by the second hinge shaft 42 being too long, and can avoid the problem that the track groove is easily separated from the hinge shaft when the first hinge shaft 41 is shorter when the door body is inclined, thereby saving the material cost on the basis of ensuring the reliability of the structure.

In addition, because the acting force is concentrated on the first hinge shaft 41, the diameter of the first hinge shaft 41 can be larger than that of the second hinge shaft 42, so that the first hinge shaft 41 is thicker and better stressed, and has enough strength to bear the acting force when the door body inclines; meanwhile, the second track groove 60 is longer, so that more space is occupied in the thickness direction of the door body, the second hinge shaft 42 is thinner, and accordingly the second track groove 60 can be narrower, so that the door body can be designed to be thinner, the thickness of the refrigerator can be smaller as a whole, and the refrigerator has the advantage of small size.

In some embodiments of the present application, referring to fig. 16, the first hinge shaft 41 and the second hinge shaft 42 are sleeved with bushings 90, and the bushings 90 are rotatable with respect to the shafts. In the process of movement of the double-shaft hinge, the shaft sleeve 90 rotates relative to the hinge shaft, and meanwhile, the shaft sleeve 90 slides with the track groove, so that friction can be reduced, and the service life is prolonged. The shaft sleeve 90 may be made of wear-resistant POM material, and the shaft sleeve 90 may be connected to the hinge shaft through a bearing or connected to the hinge plate 40 through a bearing.

In other embodiments, a liner made of POM material may be disposed on the inner wall of the track groove, and the hinge shaft may move in the liner.

In some embodiments of the present application, referring to fig. 17 to 20, the door body 30 includes a mounting block 70, the mounting block 70 is mounted on the door body 30 at a position opposite to the hinge plate 40, and the first and second track grooves 50 and 60 are provided on the mounting block 70.

The mounting block 70 includes an upper mounting block 71 provided at an upper end of the door body 30, and a lower mounting block 72 provided at a lower end of the door body 30.

Referring to fig. 17 and 18 in particular, the upper mounting block 71 may include a plate body 711, and an extension portion 712 formed by extending downward from a lower surface of the plate body 711. The first and second track grooves 50 and 60 are recessed downward from the upper surface of the plate body 711 onto the extension part 712. The extension 712 has a profile corresponding to the track groove.

The upper end of the door body 30 is correspondingly provided with an upper receiving groove 34, and the upper mounting block 71 is inserted into the upper receiving groove 34, and then the plate body 711 is fastened and connected with the door body 30 by screws or the like.

Referring specifically to fig. 19 and 20, the lower mounting block 72 has the same structure as the plate body 711, the extension portion 712, the track groove, and the like of the upper mounting block 71; the extension portion 712 of the lower mounting block 72 is formed by extending upward from the upper surface of the plate body 711, and the first track groove 50 and the second track groove 60 are recessed upward from the lower surface of the plate body 711 onto the extension portion 712. Meanwhile, the lower end of the door body 30 is correspondingly provided with a lower receiving groove 36, and the lower mounting block 72 is inserted into the lower receiving groove 36, and then the plate body 711 is fastened and connected with the door body 30 by screws or the like.

The upper mounting block 71 and the lower mounting block 72 can be made of POM (polyoxymethylene) material, and the POM has the characteristic of strong friction resistance, so that the service life of the hinge can be prolonged.

In some embodiments of the present application, in conjunction with fig. 6, the lower mounting block 72 may have a latch hook structure thereon, and specifically, the lower mounting block 72 includes a latch hook 721 disposed inside the plate 711. The latch hook 721 extends inward and is bent to the rear side, the opening of the latch hook 721 faces the plate 711, and the free end of the latch hook 721 is located at the rear side.

A stopping part 403 extending outwards is arranged on the inner side of the hinge plate 40 at the lower end of the door body 30, and when the door body 30 is in a closed state, the locking hook 721 on the door body 30 hooks the stopping part 403 on the hinge plate 40, so that the door body 30 is locked, and the cold storage and freezing effects of the refrigerator are prevented from being influenced by the untight closing of the door body 30; when the door body 30 is opened, the lock hook 721 is deformed by force to overcome the blocking of the blocking portion 403, so as to disengage from the blocking portion 403.

Latch hook 721 may include a root portion 7211 and a hook portion 7212. The root portion 7211 is connected to the plate body 711, and the hook portion 7212 is connected to the root portion 7211 and bent backward. The screw is inserted into the root portion 7211 and connected to the door 30 to strengthen the connection strength between the root portion 7211 and the door 30, so that only the hook portion 7212 deforms when the lock hook 721 is separated from the stopper portion 403.

The free ends of the hook 7212 and the stop 403 are both arc-shaped, which is beneficial for the hook 7212 to hook the stop 403 or separate from the stop 403 along the arc.

In some embodiments, the door 30 may be provided with a first protrusion 37 and a second protrusion 38, the first protrusion 37 and the second protrusion 38 are disposed substantially in a front-rear direction when the door 30 is in a closed state, a clearance groove 39 is formed between the first protrusion 37 and the second protrusion 38, and a portion 7211a of the butt portion 7211 is inserted into the clearance groove 39, so that the butt portion 7211 is prevented from being deformed in the front-rear direction by the position limitation of the first protrusion 37 and the second protrusion 38.

It should be noted that the locking hook 721 can also be disposed on the upper mounting block 71, and the stopping portion 403 is correspondingly disposed on the hinge plate 40 at the upper end of the door body 30.

In some embodiments of the present application, a limiting structure for limiting the door body 30 to be opened to a maximum angle is disposed between the door body 30 and the hinge plate 40, so as to prevent the mounting block 70 from being damaged when the door body 30 is opened to a certain angle by a large force.

Specifically, referring to fig. 19 and 21, the lower end of the door 30 is provided with a stopper 80, the stopper 80 is located at the front end of the lower mounting block 72, and when the door 30 rotates to the maximum allowable position, the stopper 80 abuts against the side 404 of the hinge plate 40, so as to stop the door 30 from rotating further.

The limiting block 80 may be a sheet metal part, and includes an embedding portion 81, a limiting portion 82, and a reinforcing portion 83.

The fitting portion 81 is plate-shaped and is mounted in the lower receiving groove 36 of the door 30, and the plate body 711 of the lower mounting block 72 clamps the fitting portion 81 to the door 30 from the lower end, thereby fixing the stopper 80 to the door 30.

The reinforcing part 83 and the embedding part 81 form a vertical included angle, namely, the embedding part 81 is in a horizontal state in an assembling state, and the reinforcing part 83 is in a vertical state; the reinforcement portion 83 is formed by bending the front end of the fitting portion 81 downward.

The limiting part 82 is block-shaped and is formed by continuously extending the lower end part of the reinforcing part 83 downwards, and the limiting part 82 vertically extends out of the lower surface of the door body 30, so that when the door body 30 drives the limiting block 80 to rotate to the maximum angle, the limiting part 82 can be blocked by the side 404 of the hinge plate 40, and the door body 30 is forced to stop opening.

The limiting block 80 is clamped on the door body 30 through the lower mounting block 72, a connecting structure between the limiting block 80 and the door body 30 is omitted, the product structure is simplified, and the door has the advantage of simple structure.

It should be noted that the limiting block 80 may also be disposed at the upper end of the door 30, and is not described herein again.

If the distance between the first hinge shaft 41 and the second hinge shaft 42 is relatively far, the influence on the hinge movement is large when the door 30 is tilted or the two axes are not parallel, and even the normal rotation of the hinge is affected, therefore, in some embodiments of the present application, referring to fig. 18, the thickness of the plate body 711 of the mounting block 70 is denoted as L1, and the minimum wall thickness between the first track groove 50 and the second track groove 60 is denoted as L2, then L2= (0.5-1) L1, and this arrangement may make the distance between the first hinge shaft 41 and the second hinge shaft 42 relatively short, and the influence on the hinge movement is small when the door is tilted slightly or the two axes are not parallel, and at the same time, the strength of the mounting block 70 may not be affected.

In the above embodiment, the first track groove 50 and the second track groove 60 are disposed on the mounting block 70, and then the mounting block 70 is mounted on the door body 30. However, in other embodiments, the first track groove 50 and the second track groove 60 may be directly disposed on the door 30.

Referring to fig. 22 and 23, a first track groove 50 and a second track groove 60 are formed on the door body 30 at positions corresponding to the upper end hinge plate 40 and are recessed downward; the door body 30 is recessed upward at a position corresponding to the lower hinge plate 40 to form a first track groove and a second track groove 60.

Specifically, the door body 30 includes a door shell 301, and a boss portion 302 extending vertically from the door shell 301 to the inside thereof. The first track groove 50 and the second track groove 60 are formed by the outer end surface of the door case 301 being recessed inward onto the boss 302.

Wherein, the convex portion 302 may be integrally formed with the door case 301. The boss 302 includes a first boss 303 and a second boss 304, the first boss 303 having a shape corresponding to the first track groove 50, and the second boss 304 having a shape corresponding to the second track groove 60.

The thickness of the door shell 301 is represented as H1, and the minimum wall thickness between the first track groove 50 and the second track groove 60 is represented as H2, then H2= (0.5-1) H1, so that the distance between the first hinge shaft 41 and the second hinge shaft 42 is short, the hinge movement is slightly influenced when the door body is slightly inclined or the two shafts are not parallel, and the strength of the mounting block 70 is not influenced.

In the above embodiment, the first hinge shaft 41 and the second hinge shaft 42 are disposed on the hinge plate 40, and the first track groove 50 and the second track groove 60 are disposed on the door 30; in other embodiments, the first hinge shaft 41 and the second hinge shaft 42 may be disposed on the door body 30, and the first track groove 50 and the second track groove 60 are disposed on the hinge plate 40; alternatively, in another embodiment, the first hinge shaft 41 and the second track groove 60 are disposed on the hinge plate 40, and the second hinge shaft 42 and the first track groove 50 are disposed on the door body 30; or the first hinge shaft 41 and the second track groove 60 are provided on the door body 30, and the second hinge shaft 42 and the first track groove 50 are provided on the hinge plate 40.

According to the application, the door body 30 is arranged to move a first distance to the inner side and move a certain distance to the front side when being initially opened, the door body 30 can be ensured not to interfere with a cabinet by moving the first distance to the inner side, and the problem of abrasion caused by friction between the door seal 30a and the front side surface of the box body 10 can be avoided by moving the door body 30a to the front side by a certain distance.

According to the application, the process that the door body 30 rotates, opens and moves inwards is divided into two stages, namely the movement tracks of the first hinge shaft 41 and the second hinge shaft 42 are straight lines when the door body is opened from the closed state to the first state, the movement tracks of the first hinge shaft 41 and the second hinge shaft 42 are curved lines when the door body is continuously opened from the first state to the second state, and the problem that the door body 30 shakes because the tracks are easy to be parallel when the door body rotates along the straight lines or the curved lines at a large angle can be avoided when the door body rotates along the straight lines or the curved lines at a large angle; and the first hinge shaft 41 and the second hinge shaft 42 only perform linear movement with a small distance at the beginning, and perform curvilinear movement with a large angle at the subsequent time, so that the curvilinear movement can ensure the fluency of the door body 30 in the movement process, and the unsmooth feeling of the user caused by the fact that the door body 30 moves hard inwards along the linear movement is avoided.

According to the present application, when the door body 30 is opened from the first state to the second state, the curve locus of the movement of the first hinge shaft 41 and the second hinge shaft 42 at least includes two curve segments with curvatures in decreasing changes, so that the moving distance of the door body 30 to the inner side within a unit angle is reduced, and the movement of the door body 30 is slowed down in the process of the inward movement of the door body 30 in the process of rotating to open the door, thereby ensuring the fluency of the door body 30 in the movement process.

According to the application, when the door body 30 is continuously opened by 90 degrees, the movement track of the first hinge shaft 41 is the fourth curve 54, and the movement track of the second hinge shaft 42 is the fifth curve 645, so that an included angle exists between the movement track of the first hinge shaft 41 and the movement track of the second hinge shaft 42 at any point, the problem that the door body 30 is prone to shaking when rotating within a large angle range is avoided, and the movement stability of the door body 30 is guaranteed.

According to this application, at the whole process that door body 30 opened, first hinge pin removed the other end from the one end in first orbit groove, and the second hinge pin removes the other end from the one end in second orbit groove, and the motion process can not withdraw, the smooth and easy nature that the door body 30 of assurance was opened.

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

Claims (10)

1. A refrigerator, characterized by comprising:

a case formed with a storage chamber;

the hinge plate is fixedly arranged on the box body;

a door body rotatable with respect to the hinge plate to open or close the storage chamber, the door body having a front wall and a side wall adjacent to the hinge plate;

the first hinge shaft is positioned on one of the door body and the hinge plate, and the first track groove is positioned on the other of the door body and the hinge plate;

the second hinge shaft is positioned on one of the door body and the hinge plate, and the second track groove is positioned on the other of the door body and the hinge plate;

when the door body is opened from a closed state to a second state, the second state is smaller than 90 degrees, the first hinge shaft moves in the first track groove, and meanwhile, the second hinge shaft moves in the second track groove so that the door body moves inwards for a certain distance;

in the process, a movement locus of the first hinge shaft relative to the first locus groove comprises a first curve, and a movement locus of the second hinge shaft relative to the second locus groove comprises a second curve, wherein the first curve and the second curve respectively comprise at least two curve segments with the curvature changing in a reducing mode.

2. The refrigerator according to claim 1, wherein with reference to the moving directions of the first hinge shaft and the second hinge shaft when the door body is opened, the first curve includes a first curve segment and a third curve segment which are connected in sequence, and the second curve includes a second curve segment and a fourth curve segment which are connected in sequence; the curvature of the third curve segment is smaller than the first curve segment and the curvature of the fourth curve segment is smaller than the second curve segment.

3. The refrigerator as claimed in claim 2, wherein the door body moves inward by a distance d1 when opening a unit angle when the first hinge shaft moves along the first curved section and the second hinge shaft moves along the second curved section, and the door body moves inward by a distance d2 when opening a unit angle when the first hinge shaft moves along the third curved section and the second hinge shaft moves along the fourth curved section, and then d2 < d1.

4. The refrigerator according to claim 1, wherein the curvatures of the first curve and the second curve are gradually decreased, respectively.

5. The refrigerator according to claim 1, wherein when the first track groove and the second track groove are provided on the door body, the first curve extends in a direction close to the front wall and the side wall, and the second curve extends in a direction away from the front wall and the side wall.

6. The refrigerator as claimed in claim 1, wherein when the door is in a closed state and the first hinge shaft and the second hinge shaft are provided on the hinge plate, the first hinge shaft is closer to the side wall and farther from the front wall than the second hinge shaft.

7. The refrigerator according to claim 1, wherein in a process that the door body is opened from a closed state to a second state, the first hinge shaft moves along a first straight line and a first curve relative to the first track groove in sequence, the second hinge shaft moves along a second straight line and a second curve relative to the second track groove in sequence, and the first straight line extends in a direction away from the front wall and close to the side wall when the first track groove is arranged on the door body, so that the door body moves a distance to the inner side and moves a distance to the front side.

8. The refrigerator according to claim 1, wherein the first hinge shaft is located at an end of the first track groove, the second hinge shaft is located at an end of the second track groove, and a gap is formed between the second hinge shaft and the end of the second track groove when the door body is in a closed state.

9. The refrigerator according to claim 1, wherein when the door body is opened by 90 degrees, a gap is formed between a front wall of the door body and a side surface of the refrigerator body in a vertical direction.

10. The refrigerator according to claim 1, wherein a limiting structure for limiting the door body to be opened to a maximum angle is arranged between the door body and the hinge plate.

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