refrigerator

Abstract

The refrigerator (1) includes a hinge plate (40) and a door body (30) that is rotatable relative to the hinge plate (40) and has a front wall (31) and a side wall (32) close to the hinge plate (40). When the door body (30) rotates from a closed state to a first state to open, the first hinge shaft (41) moves along a first straight line relative to the first locus groove (50) from a first positioning position (51) to a second positioning position (52), and the second hinge shaft (42) moves along a second straight line relative to the second locus groove (60) from a first guide position (61) to a second guide position (61), thereby moving the door body (30) inward by a first distance. As the door body (30) continues to open from the first state to the second state, if the second state is less than 90°, the first hinge axis (41) moves along the first curve (523) relative to the first track groove (50) from the second positioning position (52) to the third positioning position (53), and the second hinge axis (42) moves along the second curve (623) relative to the second track groove (60) from the second guide position (62) to the third guide position (63), thereby moving the door body (30) inward a second distance.

Description

[Technical field]

[0001] (CROSS REFERENCE TO RELATED APPLICATIONS) This application claims priority from Chinese patent application having application number 202110844775.7 filed on July 26, 2021 and titled "Refrigerator", Chinese patent application having application number 202110846078.5 filed on July 26, 2021 and titled "Refrigerator", and Chinese patent application having application number 202110844802.0 filed on July 26, 2021 and titled "Refrigerator", the entire disclosures of which are incorporated herein by reference.

[0002] The present disclosure relates to the technical field of domestic electrical appliances, and in particular to refrigerators. [Background technology]

[0003] The hinge structure of the door of a refrigerator is often of a single axis type. The door rotates around the hinge axis by fitting the hinge axis with the shaft bush of the door. When the door of this hinge structure is opened, the corner of the door exceeds the side of the door. Summary of the Invention [Means for solving the problem]

[0004] Some embodiments of the present disclosure provide a refrigerator, the refrigerator including: a box body in which a storage compartment is formed, a hinge plate fixed to the box body, a door body rotatable with respect to the hinge plate to open and close the storage compartment and having a front wall and a side wall close to the hinge plate, a first hinge shaft and a first locus groove, the first hinge shaft and the first locus groove being located on one side of the door body and the hinge plate and the first locus groove being located on the other side of the door body and the hinge plate, and a second hinge shaft and a second locus groove, the second hinge shaft and the second locus groove being located on one side of the door body and the hinge plate and the second locus groove being located on the other side of the door body and the hinge plate. When the door body rotates open from the closed state to the first state, the first hinge shaft moves along the first straight line from the first positioning position of the first locus groove to the second positioning position, and the second hinge shaft moves along the second straight line from the first guide position to the second guide position of the second locus groove, thereby moving the door body inward a first distance. When the door body continues to open from the first state to the second state, if the opening angle of the door body in the second state is less than 90°, the first hinge shaft moves along the first curve from the second positioning position of the first locus groove to the third positioning position, and the second hinge shaft moves along the second curve from the second guide position to the third guide position of the second locus groove, thereby moving the door body inward a second distance.

[0005] In an embodiment of the present disclosure, a refrigerator is provided, the refrigerator includes: a box body in which a storage compartment is formed, a hinge plate fixed to the box body, a door body rotatable with respect to the hinge plate to open and close the storage compartment and having a front wall and a side wall close to the hinge plate, a first hinge shaft and a first locus groove, the first hinge shaft and the first locus groove being located on one side of the door body and the hinge plate and the first locus groove being located on the other side of the door body and the hinge plate, and a second hinge shaft and a second locus groove, the second hinge shaft and the second locus groove being located on one side of the door body and the hinge plate and the second locus groove being located on the other side of the door body and the hinge plate. When the door opens from the closed state to an opening angle of 90°, the motion locus of the first hinge shaft in the first locus groove extends substantially in a direction approaching the front wall and the side wall, and the motion locus of the second hinge shaft in the second locus groove extends substantially in a direction away from the front wall and approaching the side wall, so that the door moves inward a certain distance. When the door continues to open from the opening angle of 90°, the motion locus of the first hinge shaft is a fourth curve, and the motion locus of the second hinge shaft is a fifth curve, and both the fourth curve and the fifth curve extend in a direction approaching the front wall and the side wall. [Brief description of the drawings]

[0006] In order to clearly explain the technical solutions of the embodiments of the present invention or the prior art, the drawings necessary for describing the embodiments or the prior art will be briefly described below. It should be understood that the drawings described below are only embodiments of the present invention, and those skilled in the art can obtain other drawings based on the drawings provided without any creative efforts. [Figure 1] FIG. 1 is a perspective view of a refrigerator according to some embodiments. [Diagram 2] FIG. 1 is a top view of a refrigerator in accordance with some embodiments. [Diagram 3] FIG. 3 is an enlarged view of an area A in FIG. [Figure 4] FIG. 2 is an exploded view of a top right corner hinge of a refrigerator in accordance with some embodiments. [Diagram 5] FIG. 2 is a bottom view of a hinge at the bottom end of a refrigerator door according to some embodiments. [Figure 6]FIG. 2 is an exploded view of a hinge at the bottom end of a refrigerator door according to some embodiments. [Figure 7] 4A-4C are diagrams illustrating the relative positions of a first hinge axis and a second hinge axis according to some embodiments. [Figure 8] 1 is a schematic diagram of a hinge when a refrigerator door is in a closed state in some embodiments. [Figure 9] FIG. 9 is a schematic diagram of the hinge of FIG. 8. [Figure 10] FIG. 9 is another schematic view of the hinge of FIG. 8. [Figure 11] FIG. 2 illustrates a door of a refrigerator in a first state according to some embodiments. [Figure 12] 1 is a diagram showing a door of a refrigerator in a state between a first state and a second state according to some embodiments. FIG. [Figure 13] FIG. 13 illustrates a door of a refrigerator in a second state according to some embodiments. [Figure 14] FIG. 2 is a diagram showing a refrigerator door in a 90° open state according to some embodiments. [Figure 15] FIG. 2 illustrates a refrigerator door in a fully open state according to some embodiments. [Figure 16] FIG. 2 illustrates a hinge axis of a refrigerator according to some embodiments. [Figure 17] FIG. 13 illustrates another exploded view of a top right corner hinge of a refrigerator in accordance with some embodiments. [Figure 18] FIG. 2 is a perspective view of an upper mounting block of a refrigerator in accordance with some embodiments. [Figure 19] FIG. 13 is another exploded view of the hinge at the bottom end of the refrigerator door in accordance with some embodiments. [Figure 20] FIG. 2 is a perspective view of a bottom mounting block of a refrigerator in accordance with some embodiments. [Figure 21] 1 is a schematic diagram of a hinge at the bottom end of a refrigerator door in accordance with some embodiments. [Figure 22] FIG. 2 illustrates a door of a refrigerator according to some embodiments. [Figure 23]FIG. 2 illustrates a refrigerator door from another perspective according to some embodiments. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0007] The present disclosure will now be described in detail with reference to exemplary embodiments, however, it will be understood that elements, structures, and features of one embodiment may be beneficially combined with other embodiments without the need for further description.

[0008] It is understood that in this application, orientations or positions indicated by terms such as "center," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," and "outside" are based on orientations or positions indicated in the drawings and are merely to facilitate and simplify the description of the present disclosure, and are not intended to indicate or imply that devices or elements have a particular orientation or must be configured or operated in a particular direction. Thus, these terms should not be construed as limitations on the present disclosure.

[0009] Terms such as "first," "second," "third," "fourth," and "fifth" are used for descriptive purposes only and shall not be construed as expressly or implicitly indicating the relative importance or number of technical features depicted. Thus, the references to "first," "second," "third," "fourth," and "fifth" features may explicitly or implicitly include one or more of those features.

[0010] In the description of the present disclosure, unless otherwise clearly specified and specified, the terms "attached", "coupled" and "connected" should be understood in a broad sense, for example, fixedly connected, detachably connected, or integrally connected, or directly connected, indirectly connected through an intermediate medium, or connected inside two elements. Those skilled in the art can specifically understand the specific meaning of the above terms in the present disclosure.

[0011] Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the side of a refrigerator facing a user during use is defined as the front side, and the side opposite to the front side is defined as the rear side.

[0012] Fig. 1 is a perspective view of a refrigerator according to some embodiments. Referring to Fig. 1, the refrigerator 1 includes a box 10 having a storage compartment 20, a door 30 connected to the box 10 so as to open and close the storage compartment 20, and a cold air supply device that supplies cold air to the storage compartment 20.

[0013] In some embodiments, the cold supply system includes an evaporator, a compressor, a condenser, and an expansion device to generate cold via the latent heat of vaporization of a refrigerant.

[0014] In some embodiments, the box 10 includes an inner shell that defines a storage compartment 20, an outer shell that is connected to the outside of the inner shell to form the exterior appearance of the refrigerator 1, and insulation disposed between the inner shell and the outer shell to insulate the storage compartment 20.

[0015] In some embodiments, the box 10 includes a horizontal partition dividing the storage compartment 20 into an upper storage compartment 21 and a lower storage compartment 22, and a vertical partition dividing the lower storage compartment 22 into two parts. The upper storage compartment 21 may be used as a refrigerator compartment for storing food in a refrigerator mode by keeping the air temperature at about 0°C to 5°C. The lower storage compartment 22 may be used as a freezer compartment for storing food in a freezer mode by keeping the air temperature at 0°C to -30°C.

[0016] In some embodiments, the storage compartment 20 has an open front to allow food to be added and removed, and the open front of the storage compartment 20 may be opened and closed by a rotatable door 30.

[0017] In some embodiments, the door body 30 is rotatably supported by a hinge located at the top and a hinge located at the bottom. For example, the hinge may be disposed at the top of the door body 30 to rotatably support the door body 30.

[0018] FIG. 2 is a top view of a refrigerator according to some embodiments. FIG. 3 is an enlarged view of an area A in FIG. 2. FIG. 4 is an exploded view of a hinge at the upper right corner of a refrigerator according to some embodiments. Referring to FIG. 2 to FIG. 4, the hinge includes a first hinge shaft 41, a second hinge shaft 42, a first locus groove 50 and a second locus groove 60. The first hinge shaft 41 fits into the first locus groove 50, and the second hinge shaft 42 fits into the second locus groove 60. In the process of the door body 30 rotating to open and close, the first hinge shaft 41 moves relatively in the first locus groove 50, and the second hinge shaft 42 moves relatively in the second locus groove 60.

[0019] The hinge at the upper end of the door body 30 includes a hinge plate 40 connected to the upper end of the box body 10, and a first hinge shaft 41 and a second hinge shaft 42 are connected to the hinge plate 40 to form a rotation shaft. In some embodiments, the hinge plate 40, the first hinge shaft 41, and the second hinge shaft 42 are integrally formed. In other embodiments, the hinge plate 40, the first hinge shaft 41, and the second hinge shaft 42 are provided separately and assembled together.

[0020] 4, the hinge plate 40 includes a connection part 401 having a substantially horizontal plate shape and connected to the box body 10, and a first extension part 402 having a horizontal plate shape and extending forward from the connection part 401. The connection part 401 may be fastened to the box body 10 by a fastener such as a screw, a pin, or a bolt.

[0021] In some embodiments, the first hinge axis 41 and the second hinge axis 42 are formed on the first extension portion 402 and extend vertically downward.

[0022] Fig. 5 is a bottom view of a hinge at the lower end of a door body of a refrigerator according to some embodiments. Fig. 6 is an exploded view of a hinge at the lower end of a door body of a refrigerator according to some embodiments. As shown in Figs. 5 and 6, for the hinge at the lower end of the door body 30, a connection part 401 is connected to the front end surface of the box body 10. A first hinge shaft 41 and a second hinge shaft 42 extend upward on the hinge plate 40.

[0023] Corresponding to the position of the hinge plate 40, a first locus groove 50 and a second locus groove 60 are provided at the upper and lower ends of the door body 30, respectively.

[0024] For ease of explanation, the left and right sides of the door body 30 that are closer to the hinge plate 40 are referred to as the side wall 32. For example, when the hinge plate 40 is located on the right side of the box body 10, the right side of the door body 30 is the side wall 32, and when the hinge plate 40 is located on the left side of the box body 10, the left side of the door body 30 is the side wall 32. The front wall 31 and the side wall 32 of the door body 30 intersect to form a side edge 33.

[0025] Continuing to refer to FIG. 2, the plane on which the side of the box 10 close to the hinge plate 40 is located is defined as the reference plane O. The side of the reference plane O close to the cabinet is the outside, and the opposite side is the inside. When the refrigerator is placed in the cabinet 100 and used, in order to avoid factors such as unevenness of the user's floor and deformation of the cabinet, the cabinet is usually provided with a distance of α=5 mm from the side of the refrigerator (i.e., the reference plane O). In order to ensure that the door body 30 of the refrigerator opens normally, the side edge 33 of the door body 30 cannot exceed the side of the box 10 (i.e., the reference plane O) during the rotation process of the door body 30. Otherwise, the side edge 33 will collide with the cabinet 100, and the door body 30 cannot open normally.

[0026] Therefore, the door body 30 needs to be able to move inward during the rotation process so that the side ridge 33 does not exceed the side surface of the box body 10. When the hinge plate 40 is provided on the right side of the door body 30, the inside is the left side. That is, the door body 30 can move to the left side. When the hinge plate 40 is provided on the left side of the door body 30, the inside is the right side. That is, the door body 30 can move to the right side.

[0027] There is a relative movement relationship between the first locus groove 50 and the first hinge shaft 41, and there is a relative movement relationship between the second locus groove 60 and the second hinge shaft 42. Therefore, in the process of opening the door body 30, if the first locus groove 50 and the second locus groove 60 are taken as stationary reference objects, then the first hinge shaft 41 moves within the first locus groove 50, and the second hinge shaft 42 moves within the second locus groove 60. For convenience of explanation, the present disclosure will be explained in a manner in which the first locus groove 50 and the second locus groove 60 are taken as reference objects and the first hinge shaft 41 and the second hinge shaft 42 move relative to the reference objects.

[0028] In some embodiments of the present application, when the door body 30 rotates from the closed state to an opening angle of 90° and opens, the movement locus of the first hinge shaft 41 relative to the first locus groove 50 extends in a direction approaching the side wall 32 and the front wall 31, and the movement locus of the second hinge shaft 42 relative to the second locus groove 60 extends in a direction away from the front wall 31 and approaching the side wall 32, so that the door body 30 moves inward a certain distance while rotating. Therefore, the problem that the side edge 33 exceeds the reference plane O and interferes with the cabinet during the process of opening the door body 30, which causes the door body 30 to not open normally, is avoided.

[0029] FIG. 7 is a diagram showing the relative positions of the first hinge shaft and the second hinge shaft of a refrigerator according to some embodiments. Referring to FIG. 7, when the door body 30 is in a closed state, the first hinge shaft 41 is closer to the side wall 32 and farther from the front wall 31 than the second hinge shaft 42. The vertical distance L1 between the first hinge shaft 41 and the second hinge shaft 42 in the front-rear direction satisfies 2.5 mm≦L1≦10 mm, and the vertical distance L2 between the first hinge shaft 41 and the second hinge shaft 42 in the left-right direction satisfies 7.5 mm≦L2≦30 mm. For example, when L1=5 mm and L2=15 mm, and the thickness of the door body 30 is set within a range of 44 mm to 53 mm, the distance by which the corner of the door body 30 exceeds the side surface of the box body 10 during the process of opening the door body 30 is always small, specifically, less than 3 mm.

[0030] FIG. 8 is a schematic diagram of a hinge when the door body of a refrigerator according to some embodiments is in a closed state. In some embodiments of the present disclosure, referring to FIG. 8, when the door body 30 is in a closed state, the first hinge axis 41 is located at the end of the first locus groove 50, and the second hinge axis 42 is located at the end of the second locus groove 60, which may determine the initial ends of the first locus groove 50 and the second locus groove 60. The first locus groove 50 extends from the initial end to the other end in a direction approximately approaching the side wall 32 and the front wall 31. The second locus groove 60 extends from the initial end to the other end in a direction approximately away from the front wall 31 and approaching the side wall 32. The first locus groove 50 and the second locus groove 60 each extend in a direction approximately approaching the side wall 32 so that the door body 30 can move inward relative to the hinge plate 40.

[0031] In some embodiments, when the door body 30 is in a closed state, there is a gap between the second hinge shaft 42 and the lower end of the second track groove 60, so that when the door body 30 is thrown strongly, the second hinge shaft 42 does not contact the lower end of the second track groove 60, and the door body 30 is prevented from being bounced.

[0032] The process in which the door 30 rotates from the closed state to the open state will be described in detail below.

[0033] Phase 1

[0034] 10 is a schematic diagram of the hinge in FIG. 8. Referring to FIG. 10, the first locus groove 50 has a first positioning position 51 and a second positioning position 52. The motion locus from the first positioning position 51 to the second positioning position 52 in the first locus groove 50 of the first hinge shaft 41 is the first positioning locus line. Correspondingly, the second locus groove 60 has a first guide position 61 and a second guide position 62, and the motion locus from the first guide position 61 to the second guide position 62 in the second locus groove 60 of the second hinge shaft 42 is the first guide locus line.

[0035] Fig. 11 is a diagram showing a door body of a refrigerator in a first state according to some embodiments. Referring to Fig. 8 and Fig. 11, when the door body 30 rotates and opens from the closed state shown in Fig. 8 to the first state shown in Fig. 11, the first hinge shaft 41 moves from a first positioning position 51 to a second positioning position 52 along a first positioning locus line with respect to the first locus groove 50. At the same time, the second hinge shaft 42 moves from a first guide position 61 to a second guide position 62 along a first guide locus line with respect to the second locus groove 60.

[0036] Here, the second positioning position 52 is farther away from the front wall 31 and closer to the side wall 32 than the first positioning position 51, and the first positioning trajectory line extends in a direction away from the front wall 31 and toward the side wall. In this way, the first hinge shaft 41 moves toward the side wall 32 and away from the front wall 31, which corresponds to the door body 30 having the first trajectory groove 50 moving a first distance in a direction away from the side wall 32 (inward) and moving a certain distance toward the front wall 31 (frontward), thereby preventing the side edge 33 from exceeding the side surface of the box body 10 and contacting the cabinet when the door body 30 is just opened. When the door body 30 has just been opened, the right rear end of the door body 30 rotates backward with respect to the first hinge shaft 41, and as the door body 30 moves inward, the door body seal 30a of the door body 30 comes into contact with and rubs against the front side surface of the box body 10. However, in the present disclosure, by providing the door body 30 so that it can move forward, friction between the door body seal 30a and the front side surface of the box body 10 can be avoided, and the lifespan of the door body seal 30 can be increased.

[0037] The second guide position 62 is farther from the front wall 31 and closer to the side wall 32 than the first guide position 61 , and the first guide locus line extends in a direction away from the front wall 31 and closer to the side wall 32 .

[0038] In some embodiments, the first positioning trajectory line is a first straight line 512 and the first guide trajectory line is a second straight line 612. However, in other embodiments, the first positioning trajectory line and the first guide trajectory line may be curved lines.

[0039] When the refrigerator door 30 is in the first state (as shown in FIG. 11), the open angle of the door 30 is within a range of approximately 5° to 10°, and the distance β that the side edge 33 extends beyond the side surface of the box 10 is approximately 2 mm.

[0040] At this stage, the angle between the first straight line 512 and the second straight line 612 is greater than 45°, which can avoid the vibration of the door body 30 when the angle between the first straight line 512 and the second straight line 611 is small and they are approximately parallel to each other, and can improve the stability of the door body 30 during rotation.

[0041] Second Phase

[0042] 10, the first locus groove 50 further has a third positioning position 53, and the motion locus from the second positioning position 52 to the third positioning position 53 in the first locus groove 50 of the first hinge shaft 41 is a second positioning locus line. Correspondingly, the second locus groove 60 further has a third guide position 63, and the motion locus from the second guide position 62 to the third guide position 63 in the second locus groove 60 of the second hinge shaft 42 is a second guide locus line.

[0043] Fig. 13 is a diagram showing a door of a refrigerator in a second state according to some embodiments. Referring to Fig. 13, when the door 30 continues to open from the first state shown in Fig. 11 to the second state shown in Fig. 13, the opening angle of the door in the second state is less than 90°, the first hinge shaft 41 moves from the second positioning position 52 to the third positioning position 53 along the second positioning locus line with respect to the first locus groove 50, and the second hinge shaft 42 moves from the second guide position 62 to the third guide position 63 along the second guide locus line with respect to the second locus groove 60.

[0044] Here, the third positioning position 53 is closer to the front wall 31 and the side wall 32 than the second positioning position 52, the second guide trajectory line extends from the second positioning position 52 to the third positioning position 53 in a direction approaching the front wall 31 and the side wall 32, and the door body 30 moves inward a second distance.

[0045] The third guide position 63 is farther from the front wall 31 and closer to the side wall 32 than the second guide position 62 , and the second guide locus line extends in a direction away from the front wall 31 and closer to the side wall 32 .

[0046] In some embodiments, the second positioning trajectory line is the first curve 523 and the second guide trajectory line is the second curve 623. However, in other embodiments, the second positioning trajectory line and the second guide trajectory line may be straight lines.

[0047] When the door body 30 is in a closed state, the center of curvature of the first curve 523 is located on the side closer to the front wall of the first curve 523 , and the center of curvature of the second curve 623 is located on the side closer to the side edge of the second curve 623 .

[0048] In the present disclosure, the process in which the door body 30 moves inward when it is opened is divided into a stage of moving along a straight line to a first state and a stage of moving along a curved line to a second state. This makes it possible to avoid the door body 30 swinging when the door body rotates at a large angle only along a straight line or only along a curved line because the trajectories are nearly parallel.

[0049] In some embodiments, in the process of opening the door body 30 from the closed state to the second state, the side edge 33 of the door body 30 rotates outside the reference plane O and moves inward. In this process, the distance β that the side edge 33 exceeds the reference plane O is always smaller than the distance α (5 mm) between the reference plane O and the cabinet, ensuring that no interference occurs due to contact between the side edge 33 and the cabinet. In addition, the side edge 33 of the door body 30 is outside the reference plane O, which avoids the door body 30 moving a large distance to the inside of the reference plane O, which causes the user to feel discontinuity when opening the door.

[0050] 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 less than the length of the first curved line 523, and the length of the second straight line 612 is less than the length of the second curved line 623. In this way, the first hinge shaft 41 and the second hinge shaft 42 perform a linear movement of a small distance only immediately after starting, and then perform a curved movement at a large angle. The curved movement can ensure the smoothness of the movement process of the door body 30 and prevent the user from feeling discontinuity due to the door body 30 moving inward during the linear movement.

[0051] In some embodiments of the second stage, the first curve 523 and the second curve 623 each include at least two curve segments that exhibit a tendency towards decreasing curvature.

[0052] In this way, as the curve curvature decreases, the distance the door body 30 moves inward per unit angle decreases. That is, in the process in which the door body 30 rotates to open and moves inward, the inward movement of the door body 30 becomes slower, ensuring smooth movement of the door body 30 during the movement process.

[0053] 12 and 13, in some examples of curvature changes, the first curve 523 includes a first curve section 5231 and a third curve section 5232 connected in series, and the second curve 623 includes a second curve section 6231 and a fourth curve section 6232 connected in series. The curvature of the third curve segment 5232 is smaller than the curvature of the first curve segment 5231, and the curvature of the fourth curve segment 6232 is smaller than the curvature of the second curve segment 623.

[0054] When the first hinge axis 41 moves along the first curve segment 5231, the second hinge axis 42 moves along the second curve segment 6231. In such a process, when the door body 30 is opened to a unit angle, the inward movement distance of the door body 30 is d1. When the first hinge axis 41 continues to move along the third curve segment 5232, the second hinge axis 42 moves along the fourth curve segment 6232. In such a process, when the door body 30 is opened to a unit angle, the inward movement distance of the door body 30 is d2. d2 is smaller than d1 (i.e., d2 < d1). As a specific example, d2 may be 1 / 2 of d1.

[0055] In other embodiments, each of the first curve 523 and the second curve 623 may include three or more curve segments with gradually decreasing curvature.

[0056] In some other embodiments of the curvature change, the curvatures of the first curve 523 and the second curve 623 gradually decrease respectively. Thereby, it is also ensured that the movement of the door body 30 slows down during the process of the door body 30 rotating and opening and moving inward, and the smoothness during the movement process of the door body 30 is ensured.

[0057] The third stage

[0058] FIG. 14 is a view showing the door body of the refrigerator in an open state up to 90° according to some embodiments. Referring to FIG. 14, when the door body 30 continues to open from the second state shown in FIG. 13 to the state of the open angle of 90° shown in FIG. 14, the door body 30 only performs a rotational movement, and the position of the first hinge axis 41 in the first track groove 50 remains unchanged. The door body 30 rotates with the first hinge axis as the center, and the second hinge axis 42 moves along the third guide track line in the second track groove 60 to the fourth guide position 64. The third guide track line is a third curve and is in an arc shape, 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.

[0059] In some embodiments, when the door 30 is open to an opening angle of 90°, a vertical gap γ exists between the front wall 31 or side edge 33 of the door 30 and the side surface (reference plane O) of the box 10. That is, the front wall 31 of the door 30 is located inside the reference plane O, and the distance from the front wall 31 to the reference plane O is γ>0, so that the door 30 can continue to open to a small angle without interfering with the cabinet. In such an example, when the refrigerator is installed in the cabinet, the door 30 may open to an opening angle greater than 90°, and the opening angle is within a range of about 105° to 110°.

[0060] In order to allow the refrigerator to open to a large angle when it is not fitted into a cabinet, in this embodiment, the first track groove 50 and the second track groove 60 are extended.

[0061] Phase 4

[0062] 10, the first locus groove 50 further has a first end position 54, and the motion locus of the first hinge shaft 41 in the first locus groove 50 from the third positioning position 53 to the first end position is a third positioning locus line. Correspondingly, the second locus groove 60 further has a second end position 65, and the motion locus of the second hinge shaft 42 in the second locus groove 60 from the fourth guide position 64 to the second end position 65 is a fourth guide locus line.

[0063] Fig. 15 is a diagram showing a door of a refrigerator in a maximum open state according to some embodiments. Referring to Fig. 15, when the door 30 continues to open from the open angle of 90° as shown in Fig. 14, the first hinge shaft 41 moves from the third positioning position 53 to the first end position 54 along the third positioning locus line relative to the first locus groove 50, and the second hinge shaft 42 moves from the fourth guide position 64 to the second end position 65 along the third guide locus line relative to the second locus groove 60.

[0064] Here, 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 locus line extends from the third positioning position 53 to the first end position in a direction approaching the front wall 30 and the side wall 30. The second end position 65 is closer to the front wall 31 and the side wall 32 than the fourth guide position 64, and the fourth guide locus line extends from the fourth guide position 64 to the second end position 65 in a direction closer to the front wall 32 and the side wall 31.

[0065] In the above description, the extension direction of the trajectory line refers to the movement direction of the first hinge axis 41 relative to the first trajectory groove 50, or the movement direction of the second hinge axis 42 relative to the second trajectory groove 60 during the process of opening the door body 30.

[0066] In this embodiment, the third positioning locus line is the fourth curve 534, and the fourth guide locus line is the fifth curve 645. However, in other embodiments, the third positioning locus line and the fourth guide locus line may be straight lines.

[0067] If the movement trajectory in this stage is the same as that in the previous stage, that is, if the door body 30 only rotates, the movement tendency of the first hinge shaft 41 and the second hinge shaft 42 is parallel to each other within a long rotation range, and therefore the side edge of the door body 30 is set to move forward and inward by a certain distance while rotating so that the movement trajectory of the first hinge shaft 41 and the movement trajectory of the second hinge shaft 42 have an included angle at an arbitrary point.

[0068] Specifically, the angle between the tangents at any corresponding points on the movement trajectories of the first hinge shaft 41 and the second hinge shaft 42 is greater than 30°, so as to ensure the stability of the movement of the door body 30.

[0069] In some embodiments of the present application, the first hinge shaft 41 mainly plays a role of positioning, and the second hinge shaft 42 mainly plays a role of guiding, and among the two hinge shafts, the first hinge shaft 41 is the main shaft, and the second hinge shaft 42 is the auxiliary shaft, and the force is mainly concentrated on the main shaft. Therefore, the length of the first hinge shaft 41 is set to be greater than the length of the second hinge shaft 42, and correspondingly, the first track groove 50 is set to be deeper than the second track groove 60. This can avoid the second hinge shaft 42 being too long and wasting material costs, and can also avoid the track groove being easily separated from the hinge shaft when the first hinge shaft 41 is short when the door body is tilted, and can save material costs while ensuring structural reliability.

[0070] Also, since the force is concentrated on the first hinge shaft 41, the diameter of the first hinge shaft may be set to be larger than the diameter of the second hinge shaft 42. In this way, the first hinge shaft 41 is thick, and can better withstand a large force, and has sufficient strength to withstand the biasing force when the door body is tilted. Meanwhile, since the second locus groove 60 is long and occupies a large space in the thickness direction of the door body, the second hinge shaft 42 is set to be thin, and the second locus groove 60 can be correspondingly narrowed, so that the door body can be designed to be thin, and the thickness of the entire refrigerator can be reduced, which has the advantage of being compact.

[0071] FIG. 16 is a diagram showing a hinge shaft of a refrigerator according to some embodiments. Referring to FIG. 16, an axle bush 90 is provided on the outer side of the first hinge shaft 41 and the second hinge shaft 42, and the axle bush 90 is rotatable with respect to the shaft. In the process of the biaxial hinge moving, the axle bush 90 rotates with respect to the hinge shaft, and the axle bush 90 slides with respect to the track groove, thereby reducing friction and improving the life. The axle bush 90 may be made of wear-resistant POM, and the axle bush 90 may be connected to the hinge shaft via a bearing or connected to the hinge plate 40 via a bearing.

[0072] In another embodiment, a bushing made of POM may be provided on the inner wall of the track groove, and the hinge shaft may move into the bushing.

[0073] In some embodiments of the present application, referring to Figures 17 to 20, the door body 30 includes a mounting block 70, which is attached to a position opposite the hinge plate 40 of the door body 30, and the first trajectory groove 50 and the second trajectory groove 60 are provided in the mounting block 70.

[0074] The mounting block 70 includes an upper mounting block 71 provided at the upper end of the door body 30 and a lower mounting block 72 provided at the lower end of the door body 30.

[0075] 17 and 18, the upper mounting block 71 may include a plate 711 and a second extension 712 extending downward from the lower surface of the plate 711. The first locus groove 50 and the second locus groove 60 are recessed downward from the upper surface of the plate 711 to the second extension 712. The shape of the second extension 712 corresponds to the locus groove.

[0076] An upper receiving groove 34 is provided at the upper end of the door body 30. The upper mounting block 71 is inserted into the upper receiving groove 34, and the plate body 711 and the door body 30 are fastened together with screws or the like.

[0077] Specifically, referring to Figures 19 and 20, the lower mounting block 72 has the same configuration as the plate body 711, the second extension part 712, and the track groove of the upper mounting block 71. The second extension part 712 of the lower mounting block 72 is formed by the upper surface of the plate body 711 extending upward. In addition, the first track groove 50 and the second track groove 60 are recessed upward from the lower surface of the plate body 711 to the second extension part 712. In addition, correspondingly, the lower housing groove 36 is provided at the lower end of the door body 30. The lower mounting block 72 is inserted into the lower housing groove 36, and the plate body 711 is fastened to the door body 30 by screws or the like.

[0078] The upper mounting block 71 and the lower mounting block 72 may be made of POM, which has strong friction resistance properties and can increase the lifespan of the hinge.

[0079] In some embodiments of the present application, referring to Fig. 6, the lower mounting block 72 may include a lock hook structure. Specifically, the lower mounting block 72 includes a lock hook 721 provided on the inner side of the plate body 711. The lock hook 721 extends inward and is bent toward the rear side. An opening of the lock hook 721 faces the plate body 711, and a free end of the lock hook 721 is located on the rear side.

[0080] Stopper portion 403 extending outward is provided on the inside of hinge plate 40 located at the lower end of door body 30. When door body 30 is in a closed state, lock hook 721 on door body 30 hooks stopper portion 403 on hinge plate 40, thereby locking door body 30 and preventing the door body 20 from being improperly closed and affecting the refrigeration and freezing effect of the refrigerator. When door body 30 is opened, lock hook 721 is deformed by the force, and overcomes the stopper of stopper portion 403 and is released from stopper portion 403.

[0081] The lock 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. In order to increase the connection strength between the root portion 7211 and the door body, the screw penetrates the root portion 7211 and is connected to the door body 30, so that when the lock hook 721 is released from the stopper portion 403, only the hook 7212 is deformed.

[0082] The free ends of the hook portion 7212 and the stopper portion 403 are both arc-shaped, which is advantageous for the hook portion 7232 to hook onto the stopper portion 403 and to disengage from the stopper portion 403 along the arc.

[0083] In some embodiments, the door body 30 may be provided with a first protrusion 37 and a second protrusion 38. When the door body 30 is in a closed state, the first protrusion 37 and the second protrusion 38 are provided in a substantially front-to-rear direction. In addition, a gap groove 39 exists between the first protrusion 37 and the second protrusion 38, and a part 7211a of the base portion 7211 is inserted into the gap groove 39. In this way, by restricting the positions of the first protrusion 37 and the second protrusion 38, deformation of the base portion 7211 in the front-to-rear direction can be avoided.

[0084] The lock hook 721 may be provided on the upper mounting block 71 , and the stopper portion 403 may be provided on the hinge plate 40 located at the upper end of the door body 30 accordingly.

[0085] In some embodiments of the present application, a position limiting structure is provided between the door body 30 and the hinge plate 40 to limit the maximum angle to which the door body 30 can be opened, thereby preventing the mounting block 70 from being damaged when the door is opened to a certain angle with a large force.

[0086] 19 and 21, a position limiting block 80 is provided at the lower end of the door body 30, and the position limiting block 80 is located at the tip of the lower mounting block 72. When the door body 30 rotates to the maximum allowable position, the position limiting block 80 abuts against the side surface 404 of the hinge plate 40, thereby preventing the door body 30 from continuing to rotate.

[0087] The position limiting block 80 may be a sheet metal member, and includes an insertion portion 81 , a position limiting portion 82 , and a reinforcing portion 83 .

[0088] The fitting portion 81 is plate-shaped and is attached inside the lower accommodation groove 36 of the door body 30. The plate body 711 of the lower mounting block 72 clamps the fitting portion 81 on the door body 30 from the lower end, thereby fixing the position limiting block 80 to the door body 30.

[0089] The reinforcing portion 83 and the fitting portion 81 are formed at a right angle. That is, in the assembled state, the fitting portion 81 is in a horizontal state, and the reinforcing portion 83 is in a vertical state. The reinforcing portion 83 is formed by bending the tip of the fitting portion 81 downward.

[0090] The position limiting portion 82 is block-shaped and is formed by continuing to extend downward from a portion of the lower end of the reinforcing portion 83. The position limiting portion 82 extends vertically from the lower surface of the door body 30, so that when the position limiting block 80 rotates to the maximum angle under the driving of the door body 30, the position limiting portion 82 is restricted by the side surface 404 of the hinge plate 40, thereby stopping the door body 30 from opening.

[0091] Since the stopper block 80 is sandwiched between the door body 30 and the lower mounting block 72, the connection structure between the stopper block 80 and the door body 30 can be omitted, and the product structure can be simplified, which has the advantage of making the structure simple.

[0092] It should be noted that the stopper block 80 may be provided at the upper end of the door body 30, and will not be described further here.

[0093] If the distance between the first hinge axis 41 and the second hinge axis 42 is large, when the door body 30 is tilted or the two axes are not parallel to each other, the movement of the hinge will be greatly affected, and even the normal rotation of the hinge may be affected. Therefore, in some embodiments of the present application, referring to FIG. 18, if the thickness of the plate body 711 of the mounting block 70 is denoted as L1, and the minimum thickness between the first track groove 50 and the second track groove 60 is denoted as L2, L2 is equal to (0.5-1)L1 (i.e., L2=(0.5-1)L1). In this way, the distance between the first hinge axis 41 and the second hinge axis 42 can be made small, and when the door body 30 is slightly tilted or the two axes are not parallel to each other, the influence on the movement of the hinge is small, and the strength of the mounting block 70 is not affected.

[0094] In the above embodiment, the first trajectory groove 50 and the second trajectory groove 60 are provided on the mounting block 70, and the mounting block 70 is attached to the door body 30. However, in other embodiments, the first trajectory groove 50 and the second trajectory groove 60 may be provided directly on the door body 30.

[0095] 22 and 23, a position at the upper end of the door body 30 corresponding to the hinge plate 40 is recessed downward to form a first locus groove 50 and a second locus groove 60. A position at the lower end of the door body 30 corresponding to the hinge plate 40 is recessed upward to form the first locus groove 50 and the second locus groove 60.

[0096] Specifically, the door body 30 includes a door shell 301 and a protrusion 302 extending vertically from the door shell 301 to the inside of the door shell 301. The first locus groove 50 and the second locus groove 60 are formed by the outer end surface of the door shell 301 being recessed inward by the protrusion 302.

[0097] Here, the protrusion 302 may be formed integrally with the door shell 301. The protrusion 302 includes a first protrusion 303 and a second protrusion 304. The shape of the first protrusion 303 corresponds to the first locus groove 50, and the shape of the second protrusion 304 corresponds to the second locus groove 60.

[0098] If the thickness of the door shell 301 is denoted as H1 and the minimum thickness between the first track groove 50 and the second track groove 60 is denoted as H2, H2 is equal to (0.5~1)H1 (i.e., H2=(0.5~1)H1). In this way, the distance between the first hinge axis 41 and the second hinge axis 42 can be made small, and when the door body is slightly inclined or the two axes are not parallel to each other, the influence on the hinge movement is small and the strength of the mounting block 70 is not affected.

[0099] In the above embodiment, the first hinge shaft 41 and the second hinge shaft 42 are provided on the hinge plate 40, and correspondingly, the first locus groove 50 and the second locus groove 60 are provided on the door body 30. In another embodiment, the first hinge shaft 41 and the second hinge shaft 42 may be provided on the door body 30, and the first locus groove 50 and the second locus groove 60 may be provided on the hinge plate 40. Alternatively, in another embodiment, the first hinge shaft 41 and the second locus groove 60 may be provided on the hinge plate 40, and the second hinge shaft 42 and the first locus groove 50 may be provided on the door body 30. Alternatively, the first hinge shaft 41 and the second locus groove 60 may be provided on the door body 30, and the second hinge shaft 42 and the first locus groove 50 may be provided on the hinge plate 40.

[0100] In the present application, when the door body 30 is first opened, it moves inward a first distance and then moves forward a fixed distance. Moving the first distance inward can prevent interference between the door body 30 and the cabinet, and moving the fixed distance forward can avoid wear due to friction between the door body seal 30a and the front side of the box body 10.

[0101] In the present application, the process of rotation opening and inward movement of the door body 30 is divided into two stages: a stage in which the movement locus of the first hinge shaft 41 and the second hinge shaft 42 is a straight line when opening from the closed state to the first state, and a stage in which the movement locus of the first hinge shaft 41 and the second hinge shaft 42 is a curved line when continuing to open from the first state to the second state. When the door body rotates only along a straight line at a large angle from the first state along a straight line to the second state along a curved line, or when the door body rotates only along a curved line at a large angle, the locus is nearly parallel, so that it is possible to avoid the door body 30 from swinging. In addition, the first hinge shaft 41 and the second hinge shaft 42 move linearly for a small distance only immediately after starting, and then move curvedly at a large angle. The curved movement ensures smoothness in the movement process of the door body 30, and can prevent the user from feeling discontinuity due to the door body 30 moving inward during the linear movement.

[0102] In the present application, when the door body 30 opens from the first state to the second state, the curved locus of the movement of the first hinge shaft 41 and the second hinge shaft 42 each includes at least two curved segments with a tendency of decreasing curvature, thereby reducing the distance that the door body 30 moves inward per unit angle, and also ensuring that the movement of the door body 30 slows down during the process of the door body 30 rotating, opening and moving inward, thereby ensuring smoothness in the movement process of the door body 30.

[0103] In this application, when the door body 30 continues to open from the opening angle of 90°, the motion trajectory of the first hinge axis 41 is the fourth curve 534, and the motion trajectory of the second hinge axis 42 is the fifth curve 645, so that the motion trajectory of the first hinge axis 41 and the motion trajectory of the second hinge axis 42 can have an included angle at any point, thereby avoiding vibration when the door body 30 rotates within a large angle range, and ensuring the stability of the movement of the door body 30.

[0104] In the present application, during the entire process of opening the door body 30, the first hinge axis moves from one end of the first locus groove to the other end of the first locus groove, and the second hinge axis moves from one end of the second locus groove to the other end of the second locus groove, and does not retreat during the movement process, thereby ensuring the smooth opening of the door body 30.

[0105] The above are merely specific embodiments of the present disclosure, but do not limit the scope of protection of the present disclosure, and all changes and replacements that a person skilled in the art can easily think of without departing from the technical scope of the present disclosure belong to the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be in accordance with the scope of protection of the claims. [Explanation of symbols]

[0106] 1 refrigerator, 10 box body, 20 storage chamber, 21 upper storage chamber, 22 lower storage chamber, 30 door body, 301 door shell, 302 protrusion, 303 first protrusion, 304 second protrusion, 31 front wall, 32 side wall, 33 side edge, 34 upper storage groove, 36 lower storage groove, 37 first protrusion, 38 second protrusion, 39 escape groove, 39 clearance groove, 40 hinge plate, 401 connection portion, 402 first extension portion, 403 stopper portion, 41 first hinge shaft, 42 second hinge shaft, 50 first track groove, 51 first positioning position, 512 first straight line, 52 second positioning position, 523 first curve, 5231 first curve segment, 5232 third curve segment, 53 third positioning position, 534 fourth curve, 54 first end position, 60 second track groove, 61 first guide position, 612 second straight line, 62 second guide position, 623 second curve, 6231 second curve segment, 6232 fourth curve segment, 63 third guide position, 634 third curve, 64 fourth guide position, 645 fifth curve, 65 second end position, 70 mounting block, 71 upper mounting block, 711 plate body, 712 second extension portion, 72 lower mounting block, 721 lock hook, 7211 base portion, 7212 hook portion, 80 position limiting block, 81 fitting portion, 82 position limiting portion, 83 reinforcing portion, 90 axle bushings, 100 cabinets.

Claims

1. A refrigerator, The storage device includes a box having a storage chamber, a door connected to the box so as to open and close the storage chamber, and a cold air supply device that supplies cold air to the storage chamber, The box body includes an inner shell that defines the storage compartment, an outer shell that is connected to the outside of the inner shell to form the external appearance of the refrigerator, and a thermal insulator that is disposed between the inner shell and the outer shell to insulate the storage compartment, The storage compartment has an open front portion so that food can be put in and taken out, and the door body and the box body are rotatably connected to open and close the open front portion of the storage compartment, The door body is rotatably supported by a hinge located at an upper end of the door body and a hinge located at a lower end of the door body, the hinge at the upper end of the door body includes a hinge plate connected to the upper end of the box body, and a first hinge shaft and a second hinge shaft are connected to the hinge plate to form a rotation shaft; the hinge plate includes a connection portion having a substantially horizontal plate shape and connected to the box body, and a first extension portion extending forward from the connection portion and having a horizontal plate shape, the connection portion being fastened to the box body by a fastener, In the hinge at the lower end of the door body, the connection portion is connected to the front surface of the box body, and the first hinge shaft and the second hinge shaft extend upward on the hinge plate, A first locus groove and a second locus groove are provided at the upper end and the lower end of the door body, respectively, corresponding to the position of the hinge plate; When the hinge plate is located on the right side of the box body, the right side surface of the door body is a side wall, and when the hinge plate is located on the left side of the box body, the left side surface of the door body is a side wall, and a side edge is formed by intersecting a front wall of the door body and the side wall; The refrigerator further includes a mounting block, the mounting block being attached to a position facing the hinge plate of the door body, the first locus groove and the second locus groove being provided in the mounting block, The mounting block includes a first mounting block provided at an upper end of the door body and a second mounting block provided at a lower end of the door body, The second mounting block has a plate and a second extension portion, and the second extension portion of the second mounting block is formed by extending the upper surface of the plate upward. The first locus groove and the second locus groove are recessed upward from the lower surface of the plate to the second extension portion. Correspondingly, a second accommodation groove is provided at the lower end of the door body. The second mounting block is inserted into the second accommodation groove, and the plate body is fastened to the door body by a screw. the second mounting block further includes a lock hook structure, the lock hook structure including a lock hook provided on an inner side of the plate body, the lock hook extending on the inner side of the plate body and bending toward a rear side of the door body, an opening of the lock hook facing toward the plate body, and a free end of the lock hook located on the rear side of the door body; the hinge plate located at the lower end of the door body further includes a stopper portion, the stopper portion is located inside the first extension portion and extends in a direction away from the first extension portion, and when the door body is in a closed state, the lock hook on the door body hooks onto the stopper portion on the hinge plate; the refrigerator further includes a position limiting block, the position limiting block being located at a lower end of the door body and at a tip end of the second mounting block, and when the door body is rotated to a maximum allowable position, the position limiting block abuts against a side surface of the hinge plate to prevent the door body from continuing to rotate, When the door body is in the closed state, the first hinge shaft is closer to the side wall and farther from the front wall than the second hinge shaft, a first distance between the first hinge shaft and the second hinge shaft in a front-rear direction is greater than 2.5 mm and smaller than 10 mm, and a second distance between the first hinge shaft and the second hinge shaft in a left-right direction is greater than 7.5 mm and smaller than 30 mm, When the door body is in the closed state, the first hinge shaft is located at an end of the first locus groove, and the second hinge shaft is located at an end of the second locus groove, During the entire process of opening the door, the first hinge shaft moves from one end of the first locus groove to the other end of the first locus groove, and the second hinge shaft moves from one end of the second locus groove to the other end of the second locus groove, the first locus groove has a first positioning position and a second positioning position, and a motion locus of the first hinge shaft in the first locus groove from the first positioning position to the second positioning position is a first positioning locus line; the second locus groove has a first guide position and a second guide position, and a motion locus of the second hinge shaft in the second locus groove from the first guide position to the second guide position is a first guide locus line; when the door body is opened from the closed state to the first state, the first hinge shaft moves from the first positioning position to the second positioning position along the first positioning locus line with respect to the first locus groove, and at the same time, the second hinge shaft moves from the first guide position to the second guide position along the first guide locus line with respect to the second locus groove, the second positioning position is farther from the front wall and closer to the side wall than the first positioning position, and the first positioning locus line extends in a direction away from the front wall and toward the side wall, the second guide position is farther from the front wall and closer to the side wall than the first guide position, and the first guide locus line extends in a direction away from the front wall and closer to the side wall, the first locus groove further has a third positioning position, and a motion locus of the first hinge shaft in the first locus groove from the second positioning position to the third positioning position is a second positioning locus line; correspondingly, the second locus groove further has a third guide position, and a motion locus of the second hinge shaft in the second locus groove from the second guide position to the third guide position is a second guide locus line; When the door body continues to open from the first state to the second state, an opening angle of the door body in the second state is less than 90°, the first hinge shaft moves from the second positioning position to the third positioning position along the second positioning locus line with respect to the first locus groove, and the second hinge shaft moves from the second guide position to the third guide position along the second guide locus line with respect to the second locus groove, the third positioning position is closer to the front wall and the side wall than the second positioning position, the second positioning locus line extends from the second positioning position to the third positioning position in a direction approaching the front wall and the side wall, the door body moves inward a third distance, the third guide position is further from the front wall and closer to the side wall than the second guide position, and the second guide locus line extends in a direction away from the front wall and approaching the side wall. refrigerator.

2. When the door body continues to open from the second state to a state of an opening angle of 90°, the door body only performs a rotational movement, the position of the first hinge shaft in the first locus groove remains unchanged, the door body rotates around the first hinge shaft as a center of a circle, the second hinge shaft moves along a third guide position in the second locus groove to a fourth guide position, the third guide position has an arc shape, and the fourth guide position is farther from the front wall and closer to the side wall than the third guide position.

2. The refrigerator according to claim 1.

3. The lock hook includes a fixing portion and a hook portion, the fixing portion is connected to the plate body, the hook portion is connected to the fixing portion and bent backward, and a screw is connected to the door body through the fixing portion to increase the connection strength between the fixing portion and the door body.

2. The refrigerator according to claim 1.

4. the second positioning locus line is a first curve, the second guide locus line is a second curve, and when the door body is in the closed state, a center of curvature of the first curve is located on a side of the first curve closer to the front wall, and a center of curvature of the second curve is located on a side of the second curve closer to the side edge; 2. The refrigerator according to claim 1.

5. the second locus groove further has a second end position, and a motion locus of the second hinge shaft in the second locus groove from the fourth guide position to the second end position is a fourth guide locus line, the second end position is closer to the front wall and the side wall than the fourth guide position, and the fourth guide locus line extends from the fourth guide position to the second end position in a direction closer to the front wall and the side wall; 3. The refrigerator according to claim 2.

6. When the door body is in the closed state, a gap exists between the second hinge shaft and the end of the second locus groove.

3. The refrigerator according to claim 1 or 2.

7. the position limiting block is a sheet metal member and includes an insertion portion, a position limiting portion, and a reinforcing portion, the insertion portion being plate-shaped and attached within the second accommodating groove of the door body, and the plate of the second mounting block clamps the insertion portion on the door body from a lower end of the door body, thereby fixing the position limiting block to the door body.

3. The refrigerator according to claim 1 or 2.

8. The first mounting block includes the plate and the second extension portion formed by extending downward from the lower surface of the plate, the first locus groove and the second locus groove are recessed downward from the upper surface of the plate to the second extension portion, the shape of the second extension portion corresponds to the first locus groove and the second locus groove, a first accommodation groove is provided at the upper end of the door body correspondingly, the first mounting block is inserted into the first accommodation groove, and the plate of the first mounting block and the door body are fastened by a screw.

3. The refrigerator according to claim 1 or 2.

9. The minimum thickness between the first locus groove and the second locus groove is 0.5 to 1 times the thickness of the plate body of the mounting block.

3. The refrigerator according to claim 1 or 2.

10. The minimum thickness between the first trajectory groove and the second trajectory groove is 0.5 to 1 times the thickness of the door shell; 3. The refrigerator according to claim 1 or 2.

11. When the door is opened to an opening angle of 90°, a gap exists between the front wall of the door and the side surface of the box.

3. The refrigerator according to claim 1 or 2.

12. The length of the first hinge shaft is greater than the length of the second hinge shaft, and the first locus groove is deeper than the second locus groove.

3. The refrigerator according to claim 1 or 2.

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