refrigerator

Abstract

The present invention provides a refrigerator, comprising a box body, a door body, and a hinge assembly for connecting the box body and the door body, wherein the hinge assembly comprises a hinge seat fixedly connected to the box body, a hinge shaft arranged on the hinge seat, an axis hole portion with a long axis hole arranged on the hinge installation side of the door body, a stop rib with the hinge shaft as the center and in an arc shape, and a positioning groove for limiting the stop rib, so that the hinge shaft can be limited to the first end or the hinge shaft can be moved from the second end to the first end, replacing the existing elastic mechanism, and can avoid mechanism failure caused by failure of the elastic mechanism, thereby further improving the reliability and stability of the door body.

Description

Technical Field

[0001] The invention relates to the field of refrigeration devices, and in particular to a refrigerator. Background Art

[0002] With the increasing demand for integrated kitchen appliances, the demand for embedding refrigerators in cabinets is also gradually increasing. When embedding refrigerators in cabinets, it is necessary to avoid the door body interfering with the refrigerator body and cabinet during rotation, and users also expect the gap between the refrigerator and the cabinet to be smaller, so as to make the overall home more beautiful.

[0003] Single-axis hinge devices are widely used in refrigerators due to their simple structure and low cost. However, after the refrigerator is embedded in the cabinet, the single-axis hinge device cannot change its axis, which causes the refrigerator door to move toward the cabinet when it is opened to 90°. This causes the drawer in the cabinet to be blocked by the door when it is pulled out, so it is necessary to design a smaller drawer to avoid the door blocking the drawer from being pulled out when it is opened to 90°.

[0004] In some existing built-in refrigerators, the axis hole in the single-axis hinge device is set as a long axis hole, so that the hinge axis can translate in the long axis hole to change the position of the rotation axis of the door body, thereby realizing the translation of the door body. However, during the rotation of the door body, the hinge axis is prone to shaking in the long axis hole, thereby generating unnecessary translation, resulting in the inability to accurately control the movement trajectory of the door body.

[0005] In view of this, it is necessary to provide a new refrigerator to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide a refrigerator.

[0007] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a refrigerator, comprising a box body, a door body, and a hinge assembly for connecting the box body and the door body, wherein the hinge assembly comprises a hinge seat fixedly connected to the box body, a hinge shaft arranged on the hinge seat, and an axis hole portion arranged on the hinge installation side of the door body, wherein the axis hole portion is provided with a long axis hole matched with the hinge shaft, the long axis hole comprises a first end and a second end opposite to each other, and the first end is closer to the front wall of the door body than the second end; the hinge assembly also comprises:

[0008] A cam structure is provided on one of the hinge seat and the hinge installation side of the door body;

[0009] A guide member is provided on the other of the hinge seat and the hinge installation side of the door body, and during the rotation of the door body, the guide member moves along the contour curve of the cam structure, driving the hinge shaft to move along the long axis hole to make the door body translate;

[0010] A stop rib, the stop rib being arranged on the hinge seat and being in an arc shape arranged concentrically with the hinge axis;

[0011] A positioning groove, the positioning groove is arranged on the hinge installation side of the door body, the positioning groove is used to limit the movement of the stop rib, the positioning groove has a first slide groove portion and a second slide groove portion, when the hinge shaft is located at the first end, the stop rib is located at the first slide groove portion, when the hinge shaft is located at the second end, the stop rib is located at the second slide groove portion;

[0012] When the door body is in a closed state, the hinge shaft is located at the first end; when the door body is opened to a first preset angle, the guide moves along the cam structure to drive the hinge shaft to move to the second end, and the stop rib moves from the first slide groove portion to the second slide groove portion.

[0013] As a further improved technical solution of the present invention, the positioning groove further includes a transitional slide groove portion, and the transitional slide groove portion is smoothly connected between the first slide groove portion and the second slide groove portion;

[0014] The contour curve of the cam structure includes a first section and a second section that are smoothly connected; when the door body rotates from a closed state to open to a second preset angle, the hinge shaft remains at the first end, and the guide moves in the first section to the first intersection line between the first section and the second section, and at the same time, the stop rib moves from the first slide groove portion to the first intersection between the first slide groove portion and the transition slide groove portion; the second preset angle is smaller than the first preset angle.

[0015] As a further improved technical solution of the present invention, when the door body rotates from the second preset angle to the first preset angle, the guide moves along the first boundary line to the end of the second section away from the first section, driving the hinge shaft to move from the first end to the second end, and the stop rib moves from the first boundary portion through the transition slide groove portion to the second slide groove portion.

[0016] As a further improved technical solution of the present invention, the positioning groove further comprises a third slide groove portion located at one end of the second slide groove portion away from the first slide groove portion, when the stop rib is located at the third slide groove portion, the hinge axis is located at the first end, and the transition slide groove portion smoothly connects the second slide groove portion and the third slide groove portion;

[0017] The contour curve further includes a third segment connected to the second segment;

[0018] When the door body continues to open from the first preset angle to the third preset angle, the guide member moves within the third section and toward one end of the third section away from the second section, the stop rib moves from the second slide groove portion to the third slide groove portion via the transition slide groove portion, and at the same time the hinge shaft moves from the second end to the first end, and the third preset angle is greater than the first preset angle.

[0019] As a further improved technical solution of the present invention, the outer peripheral edge of the shaft hole portion is arc-shaped, and the outer peripheral edge of the shaft hole portion serves as the inner groove wall of the positioning groove.

[0020] As a further improved technical solution of the present invention, the guide member includes a rotating shaft and a roller sleeved on the rotating shaft, and the roller cooperates with the cam structure.

[0021] As a further improved technical solution of the present invention, a recessed groove is provided on the door body or hinge plate of the cam structure at a position corresponding to the contour curve of the cam structure, and the shape of the recessed groove is the same as the contour curve; the guide member has an extension section that cooperates with the recessed groove.

[0022] As a further improved technical solution of the present invention, the refrigerator is embedded in a cabinet, the door body rotates around the door body rotation axis, the door body rotation axis is located in the target area or on the boundary line of the target area, and the target area is located on the side of the first trajectory away from the box body; when the door body rotation axis is located on the first trajectory line, during the rotation of the door body, the front wall of the door body is located at one end of the pivot side and is tangent to the cabinet.

[0023] As a further improved technical solution of the present invention, the door body rotates around the door body rotation axis, the door body rotation axis is located in the target area or on the boundary line of the target area, the target area is located on the side of the second trajectory line close to the pivot side, and when the door body rotation axis is located on the second trajectory line, during the rotation of the door body, the rear wall of the door body is located on the end of the pivot side and is tangent to the box body.

[0024] As a further improved technical solution of the present invention, the refrigerator is embedded in a cabinet, and the door body rotates around the door body rotation axis. The door body rotation axis is located in a target area or on a boundary line of the target area. The target area is located on a side of a third trajectory line away from the pivot side. When the door body rotation axis is located on the third trajectory line, the actual maximum door opening angle of the door body is equal to a preset maximum door opening angle.

[0025] As a further improved technical solution of the present invention, the refrigerator is embedded in a cabinet, the door body rotates around the door body rotation axis, the door body rotation axis is located in the target area or on the boundary line of the target area, the target area is located on the side of the fourth trajectory line close to the pivot side, when the door body rotation axis is located on the fourth trajectory line, when the door body rotates to 90°, the third gap between the front wall of the door body and the cabinet is equal to the first gap between the pivot side of the door body and the cabinet when the door body is in a closed state.

[0026] The beneficial effect of the present invention is that the refrigerator of the present invention is provided with a stop rib and a matching structure of a positioning groove matching the stop rib, so as to limit the hinge shaft to the first end or move the hinge shaft from the second end to the first end, replacing the existing elastic mechanism, thereby avoiding mechanism failure caused by failure of the elastic mechanism, and further improving the reliability and stability of the door body. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic perspective view of a refrigerator according to a specific embodiment of the present invention is shown;

[0028] Figure 2 A schematic top view of a refrigerator with a hinge assembly removed according to a specific embodiment of the present invention is shown;

[0029] Figure 3 A schematic partial perspective view of a refrigerator according to a specific embodiment of the present invention is shown;

[0030] Figure 4 A schematic front view of a refrigerator according to a specific embodiment of the present invention is shown;

[0031] Figure 5 Shown along Figure 4 A schematic partial enlarged cross-sectional view taken along the section line AA;

[0032] Figure 6 A schematic diagram of the trajectory of the first trajectory line on the hinge installation side is shown, wherein a plurality of circles whose centers are on the first trajectory line and pass through the centers are shown;

[0033] Figure 7 A schematic diagram of the trajectory of the first trajectory line on the hinge installation side is shown, wherein a plurality of circles whose centers are at points between the first trajectory line and the X-axis and pass through the centers are shown;

[0034] Figure 8 A schematic diagram of the trajectory of the second trajectory line on the hinge installation side is shown, wherein concentric circles are shown, the center of which is at the intersection of the first trajectory line and the second trajectory line and passes through the origin and point N respectively;

[0035] Fig. 9 A schematic diagram of the trajectory of the second trajectory line on the hinge installation side is shown, wherein concentric circles having their centers within the target area and passing through the origin and point N respectively are shown;

[0036] Fig.10 A circle centered at the axis and passing through point D is shown;

[0037] Fig.11 A schematic diagram of the trajectory of the third trajectory line on the hinge installation side is shown;

[0038] Fig.12 A schematic diagram of the trajectory of the fourth trajectory line on the hinge installation side is shown;

[0039] Fig.13 A schematic structural diagram is shown when the door body is rotated 90°. DETAILED DESCRIPTION

[0040] The present invention will be described in detail below in conjunction with the various embodiments shown in the accompanying drawings. Figure 1-Figure 13 , which are preferred embodiments of the present invention, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. However, it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformation or substitution of functions, methods, or structures made by a person of ordinary skill in the art based on these embodiments shall fall within the protection scope of the present invention.

[0041] Figure 1 A schematic three-dimensional view of a refrigerator according to a specific embodiment of the present invention is shown. Figure 2 The schematic top view of a refrigerator after the hinge assembly is removed according to a specific embodiment of the present invention is shown, wherein only one side of the cabinet 4 is shown. In actual installation, the refrigerator is completely embedded in the cabinet 4. It can be understood that the refrigerator is not necessarily embedded in the cabinet 4, but can also be embedded in the wall. Figure 1 and Figure 2 As shown, the refrigerator generally includes a cabinet 1, a door body 2 and a hinge assembly 3 for connecting the cabinet 1 and the door body 2. The door body 2 includes a front wall 22, a hinge installation side 23 and a pivot side 21. The front wall 22 of the door body 2 is the side of the refrigerator facing the external environment when embedded in the cabinet 4. The hinge installation side 23 of the door body 2 is the top side and / or the bottom side of the door body 2. In the following embodiments, the hinge installation side 23 is taken as the top side for explanation. The pivot side 21 of the door body 2 refers to the side of the door body 2 that rotates relative to the cabinet 1. When the hinge assembly 3 is installed at the left end of the door body 2, the pivot side 21 refers to the left side of the door body, and when the hinge assembly 3 is installed at the right end of the door body 2, the pivot side 21 refers to the right side of the door body 2.

[0042] like Figures 3 to 5As shown, the hinge assembly 3 includes a hinge seat 31 fixedly connected to the box body 1, a hinge shaft 32 provided on the hinge seat 31, and an axis hole portion 232 provided on the hinge installation side 23 of the door body 2 and matched with the hinge shaft 32. The axis hole portion 232 is defined with a long axis hole 2321 extending along the thickness direction of the door body, and the door body 2 is rotatably connected to the hinge seat 31 through the cooperation between the hinge shaft 32 and the long axis hole 2321.

[0043] Specifically, the hinge seat 31 includes a first connection end 311 for connecting with the door body 2 and a second connection end 312 for connecting with the box body 1. The hinge shaft 32 is disposed on the first connection end 311 to achieve connection with the door body 2.

[0044] The long axis hole 2321 has a first end and a second end opposite to each other, and the first end is closer to the front wall 22 of the door body 2 than the second end. When the hinge shaft 32 moves along the long axis hole 2321, it can drive the door body 2 to translate. When the door body 2 is in a closed state, the hinge shaft 32 is located at the first end.

[0045] Furthermore, the hinge assembly 3 further includes a cam structure provided on one of the hinge seat 31 and the hinge mounting side 23, and a guide member 33 provided on the other and matched with the cam structure. In the process of the door body 2 rotating and opening, the guide member 33 moves along the contour curve of the cam structure, driving the hinge shaft 32 to move along the long axis hole 2321, thereby causing the door body 2 to translate. The refrigerator can be applied to multiple scenarios, such as embedded scenarios, and has a simple structure.

[0046] It is known that the specific location of the cam structure and the guide member 33 can be adjusted according to specific needs. In the following, the cam structure is arranged on the hinge installation side 23, and the guide member 33 is arranged on the hinge seat 31. Of course, it is not limited to this.

[0047] In a specific embodiment, the guide member 33 includes a rotating shaft and a roller sleeved on the rotating shaft. The roller cooperates with the cam structure to reduce friction and noise.

[0048] Furthermore, a recessed groove 231 is provided on the door body 2 at a position corresponding to the contour curve of the cam structure, and the shape of the recessed groove 231 is the same as the contour curve of the cam structure. The guide member 33 extends into the recessed groove 231, thereby ensuring that the guide member 33 will not be disengaged from the contour surface of the cam structure when the door body 2 is adjusted up and down, thereby avoiding failure of the mechanism composed of the guide member 33 and the cam structure.

[0049] It is understandable that the cam structure is not limited to a specific cam, and may also be cam-shaped, such as a cam-shaped guide groove.

[0050] Furthermore, the hinge assembly 3 further includes a stop rib 34 provided on the hinge seat 31 and a positioning groove 233 provided on the hinge mounting side 23. The positioning groove 233 is used to limit the movement of the stop rib 34 so that the hinge shaft 32 is kept at the first end, or moves from the second end to the first end. By using the stop rib 34 and the matching structure of the positioning groove 233, replacing the existing elastic mechanism, the mechanism failure caused by the failure of the elastic mechanism can be avoided, and the reliability and stability of the door body 2 can be further improved.

[0051] Specifically, the stop rib 34 is in an arc shape and is arranged concentrically with the hinge shaft 32 , and the stop rib 34 is spaced from the hinge shaft 32 and the guide member 33 .

[0052] It can be understood that the distance between the stop rib 34 and the hinge shaft 32 remains unchanged, and the position of the hinge shaft 32 can be limited by limiting the position of the stop rib 34. The stop rib 34 is in an arc shape, so that when the stop rib 34 is located in the slide groove portion that matches its shape, the stop rib 34 will not shake, thereby limiting the shaking of the hinge shaft 32 and enhancing the stability of the movement of the door body 2.

[0053] Specifically, the positioning groove 233 has a first slide groove portion 2331 and a second slide groove portion 2332. When the hinge shaft 32 is located at the first end, the stop rib 34 is located at the first slide groove portion 2331. When the hinge shaft 32 is located at the second end, the stop rib 34 is located at the second slide groove portion 2332. The distance between the stop rib 34 and the hinge shaft 32 is constant, so the distance between the first slide groove portion 2331 and the first end is equal to the distance between the second slide groove portion 2332 and the second end, and the first slide groove portion 2331 is closer to the first end than the second slide groove portion 2332.

[0054] When the door body 2 is opened to the first preset angle, the guide member 33 moves along the cam structure to the position farthest from the first end, the stop rib 34 moves to the second slide groove portion 2332, and the hinge shaft 32 moves from the first end to the second end. The first preset angle is any value in the range of 80°-100°, for example, 80°, 85°, 90°, 95° or 100°. Here, since the stop rib 34 has a certain length, the stop rib 34 moves to the second slide groove portion 2332, which does not mean that the stop rib 34 moves partially to the second slide groove portion 2332, but means that the stop rib 34 moves completely to the second slide groove portion 2332. It can be understood that during the rotation of the door body 2, the hinge seat 31 is stationary, and the hinge shaft 32, the guide member 33 and the stop rib 34 arranged on the hinge seat 31 remain stationary together. Therefore, the movement of the axis center of the hinge shaft 32 from the first end to the second end is relative movement. In actual movement, the door body 2 rotates, causing the axial hole portion 232, the giveway groove 231 and the positioning groove 233 on the door body 2 to rotate accordingly, thereby causing the hinge shaft 32 to move relative to the long axis hole 2321, causing the guide member 33 to move relative to the giveway groove 231, and causing the stop rib 34 to move relative to the positioning groove 233.

[0055] According to the solution of the present invention, by cooperating with the guide member 33 and the give way groove 231, and the stop rib 34 and the positioning groove 233, it is possible to achieve the axial change of the driving hinge shaft 32 without using an elastic mechanism, thereby avoiding the failure of the aforementioned cooperating mechanism due to the failure of the elastic mechanism, and enhancing the stability of the movement of the door body 2.

[0056] Furthermore, the positioning groove 233 further includes a transitional groove portion, which is smoothly connected between the first groove portion 2331 and the second groove portion 2332. The contour curve of the cam structure includes a smoothly connected first section 2311 and a second section 2312, wherein the second section 2312 is closer to the pivot side 21 than the first section 2311.

[0057] Specifically, the first section 2311 is an arc shape with the first end as the center, and when the door body 2 rotates from the closed state to open to the second preset angle, the guide member 33 moves along the first section 2311 to the first intersection between the first end 2311 and the second section 2312, the hinge shaft 32 remains at the first end, and the door body 2 rotates in place. At this time, the stop rib 34 moves from the first slide groove portion 2331 to the first intersection between the first slide groove portion 2331 and the transition slide groove portion.

[0058] The second preset angle is smaller than the first preset angle. It is understandable that the movement of the stop rib 34 from the first slide groove portion 2331 to the first junction between the first slide groove portion 2331 and the transition slide groove portion means that the stop rib 34 moves completely to the first junction, not partially to the first junction. The second preset angle is any value between 50° and 60°, for example, it can be 50°, 55° or 60°. Among them, the movement of the stop rib 34 to the first junction means that the end of the stop rib 34 close to the first slide groove portion 2331 has moved to the first junction, at which time, the other end of the stop rib 34 may have moved to the second slide groove portion 2332.

[0059] When the door body 2 continues to rotate from the second preset angle to the first preset angle, the guide member 33 moves along the first boundary line to the end of the second section 2312 away from the first section 2311, that is, the position where the contour curve is farthest from the first end. The stop rib 34 moves from the first boundary portion through the transition groove portion to the second groove portion 2332, and at the same time, the hinge shaft 32 moves from the first end to the second end, driving the door body 2 to move along the first direction to prevent the door body 2 from affecting the extraction of the drawer, etc. in the box body 1.

[0060] Specifically, the first direction refers to the direction from the center of the door body 2 in the closed state toward the pivot side 21 .

[0061] Furthermore, the positioning groove 233 also includes a third slide groove portion 2333 located at one end of the second slide groove portion 2332 away from the first slide groove portion 2331, and the third slide groove portion 2333 is an arc with the first end as the center. When the stop rib 34 moves from the second slide groove portion 2332 to the third slide groove portion 2333, the hinge shaft 32 returns from the second end to the first end.

[0062] Specifically, the profile curve of the cam structure further includes a third section 2313 located at one end of the second section 2312 away from the first section 2311. In a direction away from the second section 2312, the third section 2313 gradually approaches the long axis hole 2321. Therefore, when the guide member 33 moves along the third section 2313, it can drive the hinge shaft 32 to move from the second end to the first end.

[0063] The transitional chute portion smoothly connects the second chute portion 2332 and the third chute portion 2333 at the same time. When the door body 2 continues to rotate from the first preset angle to the third preset angle, the guide member 33 moves in the third section 2313 in a direction away from the second section 2312, driving the hinge shaft 32 to move from the second end to the first end. The stop rib 34 moves from the second chute portion 2332 to the third chute portion 2333 through the transitional chute portion, and the third preset angle is greater than the first preset angle. The third preset angle is greater than or equal to 120° and less than or equal to 140°, for example, the third preset angle is 120°, 130° or 140°.

[0064] Furthermore, the outer periphery of the shaft hole portion 232 is arc-shaped, and the outer periphery of the shaft hole portion 232 serves as the inner groove wall of the positioning groove 233, so that the structural design corresponding to the hinge assembly 3 and the hinge installation side 23 of the door body 2 is simpler and more reliable.

[0065] Furthermore, during the rotation of the door body 2, the door body 2 rotates around a door body rotation axis, and the door body rotation axis is located in the target area or on the boundary of the target area.

[0066] In the embodiment with the hinge shaft 32 and the long axis hole 2321 matched with the hinge shaft 32, during the rotation of the door body 2, the door body 2 rotates around the hinge shaft 32, that is, the hinge shaft 32 is the rotation axis of the door body. Correspondingly, the position of the long axis hole 2321 is the position of the rotation center of the door body.

[0067] Furthermore, the first end is located in the target area or on a boundary line of the target area.

[0068] Preferably, the long axis hole 2321 is located in the target area or on the boundary of the target area, so that the hinge shaft 32 is always in the target area or on the boundary of the target area. By defining the target area, the position of the long axis hole 2321 can be debugged in the determined target area, reducing the debugging time. Of course, this is not limited to this.

[0069] The following description will be made by taking an example where the long axis hole 2321 is located within the target area or on the boundary line of the target area.

[0070] It can be understood that limiting the position of the long axis hole 2321 means limiting the position of the rotation axis of the door body.

[0071] Further, the target area is located on the side of the first trajectory away from the box body 1, and when the long axis hole 2321 is located on the first trajectory, during the rotation of the door body 2, the end of the front wall 22 of the door body 2 located on the pivot side 21 is tangent to the cabinet 4. When the long axis hole 2321 is located in the target area, during the rotation of the door body 2, there is a gap between the end of the front wall 22 of the door body 2 located on the pivot side 21 and the cabinet 4. Therefore, when the long axis hole 2321 is located in the target area defined by the first trajectory or on the boundary of the target area, the door body 2 will not collide with the cabinet 4 or cause other interference.

[0072] It can be understood that, in an implementation manner with only the first trajectory line, the above-mentioned boundary line refers to the first trajectory line.

[0073] In the present invention, the door body 2 is rotated so that the door body rotation axis is always located in the target area or on the boundary line of the target area, thereby ensuring that the door body 2 will never interfere with the cabinet 4 during the rotation of the door body 2. Compared with the method of manually adjusting the door body rotation axis based on experience in the prior art, the present invention can be adjusted in the determined target area, ensuring that the cabinet 4 will not be interfered with in any case of adjustment, thereby avoiding the phenomenon of repeated interference with the cabinet 4 during the adjustment process, thereby increasing the adjustment time.

[0074] Specifically, the first trajectory fitting method includes the following steps:

[0075] like Figure 6 As shown, a first intersection line between the front wall 22 of the door body 2 in the closed state and the hinge installation side 23 of the door body 2 is taken as the X-axis, a second intersection line between the pivot side 21 of the door body 2 in the closed state and the hinge installation side 23 of the door body 2 is taken as the Y-axis, and an intersection point of the X-axis and the Y-axis is taken as the origin O to construct an XY coordinate system;

[0076] According to the formula x=(y 2 -A 2 ) / 2A draws the first trajectory line E in the XY coordinate system, where Figure 2 As shown in FIG. 1 , A represents a first gap between the pivoting side 21 of the door body 2 and the cabinet 4 when the door body 2 is in a closed state.

[0077] It can be understood that the above-mentioned origin is the front wall 22 of the door body 2 located at one end of the pivot side 21 .

[0078] After fitting the first trajectory line, the first trajectory line divides the hinge installation side 23 of the door body 2 in the closed state into two areas, with the area on the side of the first trajectory line away from the box body 1 being the target area.

[0079] Furthermore, the formula x=(y 2 -A 2 ) / 2A, the range of y is: 0≤y≤T, wherein T represents the thickness of the door body 2. So that the determined target area is located within the thickness range of the door body 2. Of course, this is not limited to the embodiment in which the door body rotation axis is set outside the door body 22, the value range of y can also be adaptively expanded, such as -T / 2≤y≤T; or the range of y can also be set so that the target area is located on the hinge installation side 23, so as to facilitate the setting of the long axis hole 2321.

[0080] Preferably, the formula x=(y 2 -A 2 ) / 2A, when A=3, 0≤y≤T / 4; when A=4, 0≤y≤3T / 10; when A=6, 0≤y≤2T / 5; when A=10, 0≤y≤T / 2; when A=18, 0≤y≤3T / 5.

[0081] Among them, the formula x=(y 2 -A 2 ) / 2A is obtained by setting the coordinates of the door body rotation axis in the XY coordinate system to (x, y), where x represents the horizontal coordinate of the door body rotation axis and y represents the vertical coordinate of the door body rotation axis. Assume that the distance from the door body rotation axis to the origin is R 1 , then during the rotation of door body 2, the origin is in a circle with the axis (x, y) as the center and the radius is R 1 In order to avoid interference between the door body 2 and the cabinet 4, it is necessary to ensure that the origin does not interfere with the cabinet 4. Therefore, the following conditions need to be met: R 1 -x≤A and x 2 +y 2 =R 1 2 , take R1-x=A, then after conversion we can get: x 2 +y 2 =(x+A) 2 , decomposing the formula, we can get the above formula x=(y 2 -A 2 ) / 2A.

[0082] It is understandable that in R 1 -x=A, during the rotation of the door body 2, the front wall 22 of the door body 2 is located at one end of the pivot side 21 and is tangent to the cabinet 4. That is, when the rotation axis of the door body is located at the position of the formula x=(y 2 -A 2) / 2A, during the rotation of the door body 2, the end of the front wall 22 of the door body 2 located on the pivot side 21 is always tangent to the cabinet 4.

[0083] Assuming that the thickness T of the door body 2 and the first gap A are fixed values, then according to the formula x=(y 2 -A 2) / 2A and the range of y 0≤y≤T can be plotted Figure 6 The first trajectory line E shown. If the center of the circle is each point in the first trajectory line E, then Figure 6 As shown, the distance from the point on the first trajectory E to the origin is used as the radius, and the circle passing through the origin will be tangent to the cabinet 4, that is, when the door body rotation axis / long axis hole 2321 is located on the first trajectory E, during the rotation of the door body 2, the end of the front wall 22 of the door body 2 located on the pivot side 21 is tangent to the cabinet 4. If the center of the circle is at a point on the side of the first trajectory E away from the box body 1, then Figure 7 As shown, the circle passing through the origin will have a gap with the cabinet 4, that is, when the door body rotation axis / long axis hole 2321 is located on the side of the first track line E away from the box body 1, during the rotation of the door body 2, the end of the front wall 22 of the door body 2 located on the pivot side 21 has a gap with the cabinet 4. Therefore, when the door body rotation axis / long axis hole 2321 is located in the target area defined by the first track line E or on the boundary line (first track line E) of the target area, the end of the front wall 22 of the door body 2 located on the pivot side 21 is tangent to the cabinet 4 or has a gap, and will not interfere with the cabinet 4.

[0084] Further, the target area is located on the side of the second trajectory close to the pivot side 21, and when the rotation axis of the door body is located on the second trajectory, during the rotation of the door body 2, one end of the rear wall of the door body 2 located on the pivot side 21 is tangent to the box body 1. When the rotation axis of the door body is located on the side of the second trajectory close to the pivot side 21, during the rotation of the door body 2, there is a gap between one end of the rear wall of the door body 2 located on the pivot side 21 and the box body 1, that is, during the rotation of the door body 2, no interference occurs between the door body 2 and the box body 1.

[0085] In a specific embodiment, the target area is defined by the first trajectory line E and the second trajectory line, and the boundary line includes the first trajectory line E and the second trajectory line. Of course, this is not limited to this. In other embodiments, the target area can also be defined only by the second trajectory line. In this case, the boundary line is the second trajectory line.

[0086] When the rotation axis of the door body is located in the target area defined by the first trajectory line E and the second trajectory line, a gap exists between the rear wall of the door body 2 located at one end of the pivot side 21 and the box body 1, and at the same time, a gap exists between the front wall 22 of the door body 2 located at one end of the pivot side 21 and the cabinet 4, that is, during the rotation of the door body 2, no interference will occur between the door body 2 and the cabinet 4 and the box body 1.

[0087] When the door body rotation axis is located on the first trajectory line as the boundary line of the target area, the front wall 22 of the door body 2 is located at one end of the pivot side 21 and is tangent to the cabinet 4, and there is a gap between the rear wall of the door body 2 and one end of the pivot side 21 and the box 1. When the door body rotation axis is located on the second trajectory line as the boundary line of the target area, the front wall 22 of the door body 2 is located at one end of the pivot side 21 and is tangent to the cabinet 4, and there is a gap between the rear wall of the door body 2 and one end of the pivot side 21 and the box 1. Therefore, during the rotation of the door body 2, as long as it is determined that the door body rotation axis is located within the target area or on the boundary line of the target area, it can be ensured that there will be no interference between the door body 2 and the cabinet 4 and the box 1. Compared with the prior art method of manually adjusting and debugging based on experience to determine the appropriate position of the long axis hole 2321, the present invention can perform debugging within a determined target area, and can ensure that no matter how the debugging is performed, it will not interfere with the cabinet 4 and the box body 1, thereby avoiding repeated interference with the cabinet 4 and / or the box body 1 during the debugging process, thereby increasing the debugging time.

[0088] Furthermore, the second trajectory fitting method comprises the following steps:

[0089] An XY coordinate system is constructed by taking a first intersection line of the front wall 22 of the door body 2 in a closed state and the hinge installation side 23 of the door body 2 as an X-axis, taking a second intersection line of the pivot side 21 of the door body 2 in a closed state and the hinge installation side 23 of the door body 2 as a Y-axis, and taking the intersection point of the X-axis and the Y-axis as an origin O;

[0090] According to the formula y=T-(x 2 -B 2 ) / 2B to draw the second trajectory line in the XY coordinate system, wherein B represents the second gap between the door body 2 and the box body 1 when the door body 2 is in a closed state, and T represents the thickness value of the door body 2.

[0091] Furthermore, the formula y=T-(x 2 -B 2) / 2B, the range of x is 0≤x≤L, where L represents the width of the door body 2. The determined target area is located within the width range of the door body 2. Of course, this is not limited to this. When it is necessary to make the target area located on the hinge installation side 23, the value range of x can also be adaptively narrowed.

[0092] After fitting the second trajectory, the second trajectory divides the hinge installation side 23 of the door body 2 in the closed state into two areas, with the area on the side of the second trajectory close to the pivot side 21 being the target area.

[0093] Specifically, Figure 2 As shown, the hinge mounting side 23 includes four sides, namely the front side, the rear side, the left side and the right side, wherein the front side is the side where the X-axis is located, the right side is the side where the Y-axis is located, the intersection of the front side and the right side is the origin, and the intersection of the rear side and the right side is defined as point N.

[0094] It can be understood that the point N is located at an end of the rear wall of the door body 2 corresponding to the pivot side 21 .

[0095] Among them, the formula y=T-(x 2 -B 2 ) / 2B is obtained by setting the coordinates of the door body rotation axis in the XY coordinate system to (x, y), where x represents the horizontal coordinate of the door body rotation axis and y represents the vertical coordinate of the door body rotation axis. Assume that the distance from the door body rotation axis of door 2 to point N is R 2 , and the distance from the axis to the back is C, then during the rotation of the door body 2, point N is in a circle with a radius of R around the axis (x, y). 2 In order to avoid interference between door body 2 and box body 1, it is necessary to ensure that point N does not interfere with box body 1. Therefore, the following conditions need to be met: R 2 -C≤B, y=TC and x 2 +C 2 =R 2 2 , take R 2 -C=B, then after conversion we can get: From this we can get: x 2 +C 2 =(C+B) 2 , decomposing the formula, we can get: C=(x 2 -B 2 ) / 2B, substituting it into y=TC, we get the formula y=T-(x 2 -B 2 ) / 2B.

[0096] It is understandable that in R 2 -When C=B, during the rotation of door body 2, point N on door body 2 is tangent to box body 1.

[0097] Assuming that the thickness T of the door body 2 and the second gap B are fixed values, then according to the formula y=T-(x 2 -B 2 ) / 2B can be drawn Figure 8 The second track line F shown. If the center of the circle is each point on the second track line F, and the distance from the point on the second track line F to the N point is used as the radius, then the circle passing through the N points will be tangent to the box body 1, that is, when the long axis hole 2321 is located on the second track line F, during the rotation of the door body 2, the N points on the door body 2 are tangent to the box body 1. Fig. 9 As shown, if the center of the circle is at a certain point on the side of the second trajectory F close to the pivot side 21, the circle passing through point N will have a gap with the box body 1, that is, when the long axis hole 2321 is located on the side of the second trajectory F close to the pivot side 21, there is a gap between the point N and the box body 1 during the rotation of the door body 2. If the center of the circle is at a certain point on the side of the second trajectory F away from the pivot side 21, the circle passing through point N will overlap with the box body 1, that is, when the rotation axis of the door body is located on the side of the second trajectory F away from the pivot side 21, there is interference between the point N and the box body 1 during the rotation of the door body 2. Therefore, when the rotation axis of the door body is located in the target area defined by the side of the second trajectory close to the pivot side 21, point N of the door body 2 is tangent to or has a gap with the box body 1 and will not interfere with the box body 1. Therefore, it is determined that the target area is further located on the side of the second trajectory line close to the pivot side 21, so that during the rotation of the door body 2, there is no interference between the door body 2 and the cabinet 4 and the box body 1.

[0098] Further, the target area is located on the side of the third trajectory away from the pivot side 21, and when the door body rotation axis is located on the third trajectory, the actual maximum door opening angle of the door body 2 is equal to the preset maximum door opening angle. When the door body rotation axis is located on the side of the third trajectory away from the pivot side 21, the actual maximum door opening angle of the door body 2 is greater than the preset maximum door opening angle; when the door body rotation axis is located on the side of the third trajectory close to the pivot side 21, the actual maximum door opening angle of the door body 2 is less than the preset maximum door opening angle. Thus, the target area is defined to be located on the side of the third trajectory away from the pivot side 21 at the same time, so that the actual maximum door opening angle of the door body 2 is not less than the preset maximum door opening angle.

[0099] It is understandable that the technician can know the size relationship between the actual maximum door opening angle of the door body 2 and the preset maximum door opening angle according to the positional relationship between the door body rotation axis and the third trajectory line that is finally determined. For the built-in refrigerator in this embodiment, the actual maximum door opening angle of the door body 2 is required to be not less than the maximum door opening angle, so the target area is limited to the side of the third trajectory line away from the pivot side 21.

[0100] Furthermore, the third trajectory fitting method includes the following steps:

[0101] A first intersection line between the front wall 22 of the door body 2 in the closed state and the hinge installation side 23 of the door body 2 is taken as the X-axis, a second intersection line between the pivot side 21 of the door body 2 in the closed state and the hinge installation side 23 of the door body 2 is taken as the Y-axis, and the intersection point of the X-axis and the Y-axis is taken as the origin O, thereby constructing an XY coordinate system;

[0102] The third trajectory line is drawn in the XY coordinate system according to the formula x=y*tanV / 2-A, wherein V represents the preset maximum door opening angle, and A represents the first gap between the pivot side 21 of the door body 2 and the cabinet 4 when the door body 2 is in a closed state.

[0103] Furthermore, in the formula x=y*tanV / 2-A, the range of y is 0≤y≤T, where T represents the thickness of the door body 2. The determined target area is located within the thickness range of the door body 2. Of course, this is not limited to the embodiment in which the rotation axis of the door body is arranged outside the door body 2, the range of y can also be adaptively expanded, such as -T / 2≤y≤T.

[0104] Preferably, in the formula x=y*tanV / 2-A, when A=3, 0≤y≤T / 4; when A=4, 0≤y≤3T / 10; when A=6, 0≤y≤2T / 5; when A=10, 0≤y≤T / 2; when A=18, 0≤y≤3T / 5.

[0105] After fitting the third trajectory, the third trajectory divides the hinge installation side 23 of the door body 2 in the closed state into two areas, with the area on the side of the third trajectory away from the pivot side 21 being the target area.

[0106] Specifically, the formula x=y*tanV / 2-A is obtained by setting the coordinates of the door body rotation axis in the XY coordinate system to (x, y), where x represents the horizontal coordinate of the door body rotation axis, and y represents the vertical coordinate of the door body rotation axis. Fig.10As shown, assuming that V is the preset maximum door opening angle, the cabinet 4 has a point D on the same horizontal line as the origin, and a circle is drawn with the door body rotation axis as the center point and the distance from the door body rotation axis to point D as the radius. The intersection of the circle and the front edge of the hinge installation side 23 of the door body 2 when the door body 2 is in the closed state is point E. Then the angle between the line connecting the door body rotation axis and point D and the line connecting the door body rotation axis and point E is the angle V that the door body 2 has rotated. In addition, since the front wall 22 of the door body 2 in the closed state is flush with the front end of the cabinet 4, that is, point D and point E are on the same horizontal line, a line perpendicular to the front wall 22 of the door body 2 from the center of the circle can bisect the angle V, that is, V=2W, and tanW=(x+A) / y. The decomposition formula yields x=y*tanV / 2-A.

[0107] Assuming that the thickness T of the door body 2 and the first gap A are fixed values, the following can be drawn based on the above-solved formula and the range of y 0≤y≤T: Fig.11 The third trajectory line G shown can be concluded to be a straight line. When the door body rotation axis is located on the third trajectory line G, the actual maximum door opening angle of the door body 2 is equal to V. When the door body is located on the side of the third trajectory line G away from the pivot side 21, the actual maximum door opening angle of the door body 2 is greater than V. When the door body is located on the side of the third trajectory line G close to the pivot side 21, the actual maximum door opening angle of the door body 2 is less than V.

[0108] In a specific embodiment, Fig.11 As shown, the third track line G defines the target area together with the first track line E and the second track line F. At this time, the boundary line of the target area includes the first track line E, the second track line F and the third track line G.

[0109] When the long axis hole 2321 is arranged in the target area defined by the third trajectory line G, the first trajectory line E and the second trajectory line F or on the boundary line corresponding to the target area, during the rotation of the door body 2, the door body 2 and the cabinet 4 and the box body 1 will not interfere with each other, and the actual maximum door opening angle of the door body 2 is not less than the preset maximum door opening angle.

[0110] Of course, this is not limited to this. In other implementations, the third trajectory line may also define the target area alone or together with the first trajectory line or the second trajectory line.

[0111] Further, the target area is located on a side of the fourth trajectory close to the pivot side 21, and when the door body rotation axis is located on the fourth trajectory, when the door body 2 rotates to 90°, the third gap between the front wall 22 of the door body 2 and the cabinet 4 is equal to the first gap between the pivot side 21 of the door body 2 and the cabinet 4 when the door body 2 is in a closed state, that is, the door body 2 will not move inward, thereby not affecting the user's taking and placing of items; when the door body rotation axis is located on a side of the fourth trajectory close to the pivot side 21, when the door body 2 rotates to 90°, the third gap is smaller than the first gap, that is, the door body 2 will move outward when it rotates to 90°, which is convenient for users to take and place items; when the door body rotation axis is located on a side of the fourth trajectory away from the pivot side 21, when the door body 2 rotates to 90°, the third gap is larger than the first gap, that is, the door body 2 will move inward when it rotates to 90°, at this time, the door body 2 will block part of the storage space of the storage compartment, affecting the user's taking and placing of items. Therefore, in the present invention, the target area is determined to be located on the side of the fourth trajectory line close to the pivot side 21, so that after the door body 2 rotates to 90 degrees, it will not block the storage space and will not affect the user's taking and placing of items.

[0112] Specifically, the fourth trajectory fitting method includes the following steps:

[0113] A first intersection line between the front wall 22 of the door body 2 in the closed state and the hinge installation side 23 of the door body 2 is taken as the X-axis, a second intersection line between the pivot side 21 of the door body 2 in the closed state and the hinge installation side 23 of the door body 2 is taken as the Y-axis, and the intersection point of the X-axis and the Y-axis is taken as the origin O, thereby constructing an XY coordinate system;

[0114] like Fig.12 As shown, a fourth trajectory line H is drawn in the XY coordinate system according to the formula x=y.

[0115] Furthermore, the formula x=y is obtained by setting the coordinates of the door body rotation axis in the XY coordinate system to (x, y), where x represents the horizontal coordinate of the door body rotation axis and y represents the vertical coordinate of the door body rotation axis. Assume that x≠y. It can be understood that if Fig.13 As shown, when the door body 2 is in a closed state, the gap between the door body 2 and the cabinet 4 is a first gap A. Fig.13 As shown, when the door body 2 rotates 90°, the gap between the door body 2 and the cabinet 4 becomes the third gap A+a. If the gap between the door body 2 and the cabinet 4 needs to remain unchanged after the door body 2 rotates, a=0, that is, x=y.

[0116] In a specific embodiment, the fourth trajectory line H of the door body rotation axis on the hinge installation side 23 of the door body 2 in the closed state can be determined according to the formula x=y. The door body rotation axis is selected to be on the fourth trajectory line H or is selected to move on the fourth trajectory line H. It can be ensured that when the door body 2 is rotated to 90°, the gap between the door body 2 and the cabinet 4 remains unchanged, thereby not affecting the user's taking of items.

[0117] At Fig.12 In a specific embodiment shown, the fourth trajectory line H and the first trajectory line E, the second trajectory line F, and the third trajectory line G together define a target area. At this time, please refer to the figure, the boundary line of the target area includes the third trajectory line G and the fourth trajectory line H.

[0118] like Fig.12 As shown, when the rotation axis of the door body is located in the target area or on the boundary line corresponding to the target area, during the rotation of the door body 2, there is a gap between the front wall 22 of the door body 2 located at one end of the pivot side 21 and the cabinet 4, and there is a gap between the rear wall of the door body 2 located at one end of the pivot side 21 and the box body 1, the actual maximum door opening angle of the door body 2 is not less than the preset maximum door opening angle, and the door body 2 will not move inward when rotated to 90°.

[0119] Of course, this is not limited to this. In other embodiments, the fourth trajectory line H can also define the target area alone; or the fourth trajectory line H is combined with at least one of the first trajectory line E, the second trajectory line F, and the third trajectory line G to define the target area.

[0120] It is understandable that those skilled in the art can select the first track line E, the second track line F, the third track line G, and the fourth track line H according to actual needs. Therefore, those skilled in the art can know how to adjust and the adjustment area when adjusting the long axis hole 2321, which provides theoretical basis support for those skilled in the art.

[0121] In summary, the refrigerator of the present invention is provided with a stop rib 34 and a matching structure of a positioning groove 233 matching the stop rib 34, so as to limit the hinge shaft 32 to the first end or move the hinge shaft 32 from the second end to the first end. By replacing the existing elastic mechanism, the mechanism failure caused by the failure of the elastic mechanism can be avoided, and the reliability and stability of the door body 2 can be further improved.

[0122] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0123] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A refrigerator, comprising a box body, a door body, and a hinge assembly for connecting the box body and the door body, wherein the hinge assembly comprises a hinge seat fixedly connected to the box body, a hinge shaft arranged on the hinge seat, and an axis hole portion arranged on the hinge installation side of the door body, wherein the axis hole portion is provided with a long axis hole matched with the hinge shaft, the long axis hole comprises a first end and a second end opposite to each other, and the first end is closer to the front wall of the door body than the second end; characterized in that: The hinge assembly also includes: A cam structure is provided on one of the hinge seat and the hinge installation side of the door body; A guide member is provided on the other of the hinge seat and the hinge installation side of the door body, and during the rotation of the door body, the guide member moves along the contour curve of the cam structure, driving the hinge shaft to move along the long axis hole to make the door body translate; A stop rib, the stop rib being arranged on the hinge seat and being in an arc shape arranged concentrically with the hinge axis; A positioning groove, the positioning groove is arranged on the hinge installation side of the door body, the positioning groove is used to limit the movement of the stop rib, the positioning groove has a first slide groove portion and a second slide groove portion, when the hinge shaft is located at the first end, the stop rib is located at the first slide groove portion, when the hinge shaft is located at the second end, the stop rib is located at the second slide groove portion; When the door body is in a closed state, the hinge shaft is located at the first end; when the door body is opened to a first preset angle, the guide moves along the cam structure to drive the hinge shaft to move to the second end, and the stop rib moves from the first slide groove portion to the second slide groove portion.

2. The refrigerator according to claim 1, characterized in that: The positioning groove further includes a transitional slide groove portion, and the transitional slide groove portion is smoothly connected between the first slide groove portion and the second slide groove portion; The contour curve of the cam structure includes a first section and a second section that are smoothly connected; when the door body rotates from a closed state to open to a second preset angle, the hinge shaft remains at the first end, and the guide moves in the first section to the first intersection line between the first section and the second section, and at the same time, the stop rib moves from the first slide groove portion to the first intersection between the first slide groove portion and the transition slide groove portion; the second preset angle is smaller than the first preset angle.

3. The refrigerator according to claim 2, characterized in that: When the door body rotates from the second preset angle to the first preset angle, the guide moves along the first boundary line to the end of the second section away from the first section, driving the hinge shaft to move from the first end to the second end, and the stop rib moves from the first boundary portion through the transition slide groove portion to the second slide groove portion.

4. The refrigerator according to claim 2, characterized in that: The positioning groove further includes a third slide groove portion located at one end of the second slide groove portion away from the first slide groove portion, when the stop rib is located at the third slide groove portion, the hinge shaft is located at the first end, and the transition slide groove portion smoothly connects the second slide groove portion and the third slide groove portion; The contour curve further includes a third segment connected to the second segment; When the door body continues to open from the first preset angle to the third preset angle, the guide member moves within the third section and toward one end of the third section away from the second section, the stop rib moves from the second slide groove portion to the third slide groove portion via the transition slide groove portion, and at the same time the hinge shaft moves from the second end to the first end, and the third preset angle is greater than the first preset angle.

5. The refrigerator according to claim 1, characterized in that: The outer peripheral edge of the shaft hole portion is in an arc shape, and the outer peripheral edge of the shaft hole portion serves as an inner groove wall of the positioning groove.

6. The refrigerator according to claim 1, characterized in that: The guide member comprises a rotating shaft and a roller sleeved on the rotating shaft, and the roller cooperates with the cam structure.

7. The refrigerator according to claim 1, characterized in that: A recessed groove is provided on the door body or hinge plate where the cam structure is arranged at a position corresponding to the contour curve of the cam structure, and the shape of the recessed groove is the same as the contour curve; the guide member has an extension section that matches the recessed groove.

8. The refrigerator according to claim 1, characterized in that: The refrigerator is embedded in the cabinet, and the door body rotates around the door body rotation axis, the door body rotation axis is located in the target area or on the boundary line of the target area, and the target area is located on the side of the first trajectory line away from the box body; when the door body rotation axis is located on the first trajectory line, during the rotation of the door body, the front wall of the door body is located on the pivot side and is tangent to the cabinet.

9. The refrigerator according to claim 1, characterized in that: The door body rotates around the door body rotation axis, and the door body rotation axis is located in the target area or on the boundary line of the target area. The target area is located on the side of the second trajectory line close to the pivot side. When the door body rotation axis is located on the second trajectory line, during the rotation of the door body, the rear wall of the door body is located on the end of the pivot side and is tangent to the box body.

10. The refrigerator according to claim 1, characterized in that: The refrigerator is embedded in the cabinet, and the door body rotates around the door body rotation axis. The door body rotation axis is located in the target area or on the boundary line of the target area. The target area is located on the side of the third trajectory line away from the pivot side. When the door body rotation axis is located on the third trajectory line, the actual maximum door opening angle of the door body is equal to the preset maximum door opening angle.

11. The refrigerator according to claim 1, characterized in that: The refrigerator is embedded in the cabinet, and the door body rotates around the door body rotation axis, the door body rotation axis is located in the target area or on the boundary line of the target area, the target area is located on the side of the fourth trajectory line close to the pivot side, when the door body rotation axis is located on the fourth trajectory line, when the door body rotates to 90°, the third gap between the front wall of the door body and the cabinet is equal to the first gap between the pivot side of the door body and the cabinet when the door body is in a closed state.

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