Method for determining the rotation axis of door of built-in refrigerator and built-in refrigerator

Abstract

The present invention provides a method for determining the rotation axis of a door body of a built-in refrigerator and a built-in refrigerator, wherein the built-in refrigerator is embedded in a cabinet, and comprises a box body and a door body rotatably connected to the box body by a hinge; the determination method comprises the following steps: obtaining a preset maximum door opening angle of the door body; fitting a first trajectory line, and when the rotation axis of the door body is located on the first trajectory line, the actual maximum door opening angle of the door body is equal to the preset maximum door opening angle; determining that a target area is located on a side of the first trajectory line away from a pivoting side, and during the rotation of the door body, determining that the rotation axis of the door body is located within the target area or on a boundary line of the target area; the target area of ​​the rotation axis of the door body can be determined, so that debugging can be performed within the determined target area to ensure that the actual maximum door opening angle of the door body is not less than the preset maximum door opening angle.

Description

Technical Field

[0001] The invention relates to the field of refrigeration equipment, and in particular to a method for determining a rotation axis of a door of a built-in refrigerator and the built-in refrigerator. Background Art

[0002] With the development of society and the gradual improvement of the quality of life, people's demand for the aesthetics of refrigerators has become increasingly prominent. It has become popular to embed refrigerators into cabinets, that is, to form embedded refrigerators to achieve a unified home decoration style.

[0003] When the door body of an existing built-in refrigerator is not in a suitable rotation axis during rotation, it can only be adjusted by technicians based on their own experience. The adjustment time is long due to the need to constantly try various positions, and it is very likely that the best position cannot be adjusted.

[0004] In view of this, it is necessary to provide a new method for determining the rotation axis of the door of a built-in refrigerator and a built-in refrigerator to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a method for determining the rotation axis of a door of a built-in refrigerator and the built-in refrigerator.

[0006] To achieve the above-mentioned object, the present invention adopts the following technical solution: a method for determining the rotation axis of a door of a built-in refrigerator, wherein the built-in refrigerator is embedded in a cabinet, and the built-in refrigerator includes a cabinet and a door rotatably connected to the cabinet through a hinge, and the determination method includes the following steps:

[0007] Obtaining a preset maximum door opening angle of the door body;

[0008] Fitting a first trajectory line, when the rotation axis of the door body is located on the first trajectory line, the actual maximum door opening angle of the door body is equal to the preset maximum door opening angle;

[0009] The target area is determined to be located on the side of the first trajectory away from the pivoting side, and during the rotation of the door body, the rotation axis of the door body is determined to be located within the target area or on the boundary line of the target area.

[0010] As a further improved technical solution of the present invention, when the door body is in a closed state, the target area is located on the hinge installation side of the door body.

[0011] As a further improved technical solution of the present invention, “fitting a first trajectory line” specifically includes the following steps:

[0012] An XY coordinate system is constructed by taking a first intersection line between the front wall of the door body in a closed state and the hinge installation side of the door body as an X-axis, a second intersection line between the pivot side of the door body in a closed state and the hinge installation side of the door body as a Y-axis, and taking the intersection point of the X-axis and the Y-axis as the origin;

[0013] The first 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 of the door body and the cabinet when the door body is in a closed state.

[0014] As a further improved technical solution of the present invention, the range of y in the formula x=y*tanV / 2-A is -T / 2≤y≤T, wherein T represents the thickness value of the door body.

[0015] As a further improved technical solution of the present invention, the determination method further includes the following steps:

[0016] An XY coordinate system is constructed by taking a first intersection line between the front wall of the door body in a closed state and the hinge installation side of the door body as an X-axis, a second intersection line between the pivot side of the door body in a closed state and the hinge installation side of the door body as a Y-axis, and taking the intersection point of the X-axis and the Y-axis as the origin;

[0017] A second trajectory line is drawn in the XY coordinate system according to the formula x=y; when the rotation axis of the door body is located on the second trajectory line, the third gap between the front wall of the door body and the cabinet when the door body is rotated to 90° 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;

[0018] It is determined that the target area is simultaneously located on a side of the second trajectory line close to the pivoting side.

[0019] In order to achieve the above-mentioned invention objectives, the present invention also provides a built-in refrigerator, which is embedded in a cabinet. The built-in refrigerator includes a box body and a door body rotatably connected to the box body by a hinge. During the process of opening and closing the door body, the door body rotates around the door body rotation axis; the door body rotation axis is located in a 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 pivot side; when the door body rotation axis is located on the first trajectory line, the actual maximum door opening angle of the door body is equal to the preset maximum door opening angle.

[0020] As a further improved technical solution of the present invention, when the door body is in a closed state, the target area is located on the hinge installation side of the door body.

[0021] As a further improved technical solution of the present invention, the first trajectory line is a curve drawn in an XY coordinate system constructed according to the formula x=y*tanV / 2-A, with the first intersection line of the front wall of the door body in a closed state and the hinge installation side of the door body as the X-axis, the second intersection line of the pivot side of the door body in a closed state and the hinge installation side of the door body as the Y-axis, and the intersection of the X-axis and the Y-axis as the origin, wherein A represents the first gap between the pivot side of the door body and the cabinet when the door body is in a closed state, and V represents the preset maximum door opening angle.

[0022] As a further improved technical solution of the present invention, the target area is also located on a side of a second trajectory line close to the pivot side, and the second trajectory line is a straight line drawn in an XY coordinate system constructed according to the formula x=y, with a first intersection line of the front wall of the door body in a closed state and the hinge installation side of the door body as the X-axis, a second intersection line of the pivot side of the door body in a closed state and the hinge installation side of the door body as the Y-axis, and the intersection of the X-axis and the Y-axis as the origin; when the rotation axis of the door body is located on the second trajectory line, when the door body is rotated 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 the closed state.

[0023] As a further improved technical solution of the present invention, the door body rotation axis is a physical axis or a virtual axis.

[0024] As a further improved technical solution of the present invention, the front wall of the door body is higher than the hinge, and the hinge has an avoidance portion on one side of the pivoting side.

[0025] As a further improved technical solution of the present invention, the door body is a glass door body.

[0026] The beneficial effect of the present invention is that: according to the method for determining the rotation axis of the door body in the present invention, the target area of ​​the rotation axis of the door body can be determined, so that debugging can be performed within the determined target area, and the actual maximum door opening angle of the door body can be ensured to be not less than the preset maximum door opening angle. Compared with the method of artificially debugging and continuously determining the appropriate door body rotation axis according to experience in the prior art, the present invention can determine the debugging area and debugging direction according to needs, thereby avoiding the phenomenon of repeatedly failing to open the door to the preset maximum door opening angle during the debugging process, thereby increasing the debugging time. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a partial schematic stereoscopic diagram of a built-in refrigerator according to an embodiment of the present invention.

[0028] Figure 2 yes Figure 1A schematic top view of a built-in refrigerator is shown (hinges removed).

[0029] Figure 3 A circle with the door body rotation axis as the center and passing through point D is shown;

[0030] Figure 4 A schematic diagram showing the trajectory of the first trajectory line on the hinge installation side in the method for determining the rotation axis of the door body in the present invention;

[0031] Figure 5 A schematic structural diagram showing the door of the built-in refrigerator of the present invention when it is rotated 90°;

[0032] Figure 6 A schematic diagram showing the trajectory of the second trajectory line on the hinge installation side in the method for determining the rotation axis of the door body in the present invention;

[0033] Figure 7 A schematic diagram showing the trajectory of the third trajectory line and the fourth trajectory line on the hinge installation side in the method for determining the rotation axis of the door body in the present invention;

[0034] Figure 8 A schematic structural diagram of a built-in refrigerator according to a second embodiment of the present invention is shown;

[0035] Fig. 9 for Figure 8 A schematic partial diagram of a built-in refrigerator in FIG. DETAILED DESCRIPTION

[0036] The present invention will be described in detail below in conjunction with the various embodiments shown in the accompanying drawings. Figure 1-Figure 9 , 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.

[0037] In the description of the present invention, the terms "upper", "lower", "front", "rear" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention. For example, in the following description, Figure 2 The lower side is the front and the upper side is the back.

[0038] Figure 1 A partial schematic perspective view of a built-in refrigerator according to an embodiment of the present invention is shown. Figure 2A schematic top view of a built-in refrigerator according to an embodiment of the present invention is shown (without hinges), wherein only one side of the cabinet 4 is shown. In actual installation, the built-in refrigerator is completely embedded in the cabinet 4. It is understandable that the built-in 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 built-in refrigerator is consistent with the structure of the refrigerator in the prior art, and generally includes a box body 1 and a door body 2 rotatably connected to the box body 1 through a hinge 3. 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 built-in refrigerator facing the external environment when embedded in the cabinet 4. The hinge installation side 23 of the door body 2 is the upper side of the door body 2, that is, one end of the hinge 3 is installed on the hinge installation side 23, and the other end of the hinge 3 is installed on the upper side of the box body 1 of the refrigerator. The pivot side 21 of the door body 2 is the side of the door body 2 rotating around the box body 1.

[0039] The present invention provides a method for determining the rotation axis of a door of a built-in refrigerator, comprising the following steps:

[0040] Obtaining a preset maximum door opening angle of the door body 2;

[0041] A first trajectory line is fitted, and when the rotation axis of the door body is located on the first trajectory line, the actual maximum door opening angle of the door body 2 is equal to the preset maximum door opening angle;

[0042] The target area is determined to be located on the side of the first trajectory away from the pivot side 21 , and during the rotation of the door body 2 , the door body rotation axis is determined to be located within the target area or on the boundary line of the target area.

[0043] 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.

[0044] Specifically, the door body rotation axis can be a physical axis or a virtual axis. For example, when the hinge 3 is a single-axis hinge, the door body rotation axis is the axis of the rotating shaft in the single-axis hinge, that is, the physical axis. When the hinge 3 is a multi-axis hinge, the door body rotation axis is the virtual axis defined by the multiple axes in the multi-axis hinge.

[0045] When the position of the door body rotation axis is adjusted on the first trajectory, the actual maximum door opening angle of the door body 2 is equal to the preset maximum door opening angle, and when the position of the door body rotation axis is adjusted on the side of the first 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 adjusted on the side of the first 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.

[0046] In the present invention, the door opening requirement is that the actual maximum door opening angle of the door body 2 is greater than or equal to the preset maximum door opening angle. Therefore, the target area is determined to be located on the side of the first trajectory line away from the pivot side 21, so that the actual maximum door opening angle of the door body 2 is not less than the preset maximum door opening angle.

[0047] It is understandable that the technicians can know the relationship between the actual maximum door opening angle of the final door body 2 and the preset maximum door opening angle based on the positional relationship between the door body rotation axis and the first trajectory line that is finally determined.

[0048] It should be noted that the above-mentioned door body rotation axis being located within the target area or on the boundary line of the target area can be understood as that during the rotation of the door body 2, the door body rotation axis is always located at a point within the target area or is always located at a point on the boundary line of the target area; it can also be understood as that during the rotation of the door body 2, the door body rotation axis moves within the target area and / or on the boundary line of the target area.

[0049] Furthermore, “fitting a first trajectory line” specifically includes the following steps:

[0050] Please refer to Figure 4 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 the intersection point of the X-axis and the Y-axis is taken as the origin O, thereby constructing an XY coordinate system;

[0051] The first 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 of the door body and the cabinet when the door body is in a closed state.

[0052] Furthermore, in the formula x=y*tanV / 2-A, the range of y is 0≤y≤T, wherein T represents the thickness value of the door body. So that the determined target area is located within the thickness value range of the door body 2 when it is in a closed state. Of course, this is not limiting. In the implementation mode where the rotation axis of the door body is arranged outside the door body 2, 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 of the door body 2 when it is in a closed state, so as to facilitate the setting of the hinge axis.

[0053] 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.

[0054] 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. Figure 3 As 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.

[0055] Assuming that the thickness T of the door body 2 and the first gap A are fixed values, according to the above-solved formula and the range of y 0≤y, the following can be drawn: Figure 4 The first trajectory line G shown can be concluded to be a straight line. When the door body rotation axis is located on the first trajectory line G, 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 first trajectory line G 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 first trajectory line G 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.

[0056] Furthermore, the determination method further comprises the following steps:

[0057] 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;

[0058] like Figure 6 As shown, a second track line H is drawn in the XY coordinate system according to the formula x=y; when the rotation axis of the door body is located on the second track line, 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 the closed state

[0059] It is determined that the target area is located at the same time on a side of the second trajectory line close to the pivot side 21 .

[0060] When the door body rotation axis is located on the second trajectory H, the third gap between the front wall 22 of the door body 2 and the cabinet 4 when the door body is rotated to 90° is equal to the first gap between the pivot side 21 of the door body 2 and the cabinet 4 when the door body is in the 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 the side of the second trajectory H close to the pivot side 21, the third gap is smaller than the first gap when the door body 2 is rotated to 90°, that is, the door body 2 will move outward when it is rotated to 90°, which is more conducive to the user's taking and placing of items; when the door body rotation axis is located on the side of the second trajectory H away from the pivot side 21, the third gap is larger than the first gap when the door body is rotated to 90°, that is, the door body 2 will move inward when it is rotated 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 further determined to be located on the side of the second trajectory line H 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.

[0061] It is understandable that the debugging area and debugging direction can be determined according to whether the gap between the door body 2 and the cabinet 4 needs to remain unchanged when the door body 2 is rotated to 90°.

[0062] 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 Figure 2 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. Figure 5 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.

[0063] Therefore, if it is necessary to make the third gap between the front wall 22 of the door body 2 and the cabinet 4 equal to the first gap when the door body 2 is rotated to 90°, it is necessary to find the door body rotation axis on the second trajectory line or to move the door body rotation axis on the second trajectory line H.

[0064] According to the solution of the embodiment of the present invention, the second trajectory line H of the axis on the hinge installation side 23 can be determined according to the formula x=y. By selecting the axis on the second trajectory line H or moving on the second trajectory line H, it can be ensured that the gap between the door body 2 and the cabinet 4 remains unchanged when the door body 2 is rotated to 90°.

[0065] At this time, the target area is defined by the first trajectory line G and the second trajectory line H, and the boundary line of the target area includes the first trajectory line G and the second trajectory line H.

[0066] When the door body rotation axis is located in the target area, during the rotation of the door body 2, the actual maximum door opening angle of the door body 2 is greater than the preset maximum door opening angle, and the door body 2 moves outward when rotating to 90°.

[0067] When the door body rotation axis is located on the first trajectory line G serving as the boundary line, during the rotation of the door body 2, the actual maximum door opening angle of the door body 2 is equal to the preset maximum door opening angle, and the door body 2 moves outward when rotating to 90°.

[0068] When the rotation axis of the door body is located on the second trajectory line H serving as the boundary line, during the rotation of the door body 2, the actual maximum door opening angle of the door body 2 is greater than the preset maximum door opening angle, and the gap between the door body 2 and the cabinet 4 remains unchanged when the door body 2 rotates to 90°.

[0069] Furthermore, the determination method further comprises the following steps:

[0070] A third trajectory line is fitted. When the rotation axis of the door body is located on the third trajectory line, during the rotation of the door body 2, one end of the front wall 22 of the door body 2 located on the pivot side 21 is tangent to the cabinet 4;

[0071] It is determined that the target area is located on a side of the third trajectory away from the box 1 .

[0072] When the door body rotation axis is located on the side of the third track line away from the box body 1, 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, that is, it can be ensured that the door body 2 does not interfere with the cabinet 4 during the rotation. Compared with the method of artificially adjusting and adjusting according to experience in the prior art to determine the appropriate door body rotation axis, the present invention can be adjusted within a determined target area or on the boundary line of the target area, and it can be ensured that no matter how the adjustment is performed, the cabinet 4 will not be interfered, thereby avoiding the phenomenon of repeatedly interfering with the cabinet 4 during the adjustment process, thereby increasing the adjustment time.

[0073] Furthermore, the above-mentioned “fitting a third trajectory line” specifically includes the following steps:

[0074] 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;

[0075] According to the formula x=(y 2 -A 2 ) / 2A draws the first trajectory line in the XY coordinate system, where Figure 2 As shown in , A represents a 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.

[0076] 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 .

[0077] 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. The determined target area is located within the thickness range of the door body 2 when it is in a closed state. Of course, this is not limiting. In the embodiment where the rotation axis of the door body is set outside the door body, 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 of the door body 2 when it is in a closed state, so as to facilitate the setting of the hinge axis.

[0078] 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.

[0079] 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. Assuming that the distance from the door body rotation axis to the origin is R1, when the door body 2 rotates, the origin moves on a circle with a radius of R1 around the axis (x, y). 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: R1-x≤A and x 2 +y 2 =R1 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.

[0080] It can be understood that when R1-x=A, during the rotation of the door body 2, the front wall 22 of the door body at one end of the pivoting side 21 is tangent to the cabinet 4.

[0081] 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 7 The third trajectory line E shown. If the center of the circle is each point in the third trajectory line E, the distance from the point on the third trajectory line 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 rotation axis of the door body is located on the third trajectory line 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 third trajectory line E away from the box body 1, the circle passing through the origin will have a gap with the cabinet 4, that is, when the rotation axis of the door body is located on the side of the third trajectory 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 located on the pivot side 21 is gap with the cabinet 4. Therefore, it is further defined that the target area is located on the side of the third trajectory line E away from the box body 1, so that the door body 2 will not interfere with the cabinet 4 during the rotation.

[0082] At Figure 7In the specific embodiment shown, the third track line E, the first track line G and the second track line H define the target area together, and at this time, the boundary line of the target area includes the first track line G and the second track line H. When the rotation axis of the door body is located in the target area or on the boundary line of the target area, it can be ensured that the door body 2 will not interfere with the cabinet 4 during the rotation of the door body 2, and at the same time, it is ensured that 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 it rotates to 90°.

[0083] Of course, this is not limited to this. In other embodiments, the third track line E can also define the target area together with the first track line G. In this case, the boundary line of the target area includes the first track line G and the third track line E. When the rotation axis of the door body is located in the target area or on the boundary line of the target area, it can be ensured that during the rotation of the door body 2, the door body 2 will not interfere with the cabinet 4, and at the same time, it can be ensured that the actual maximum door opening angle of the door body 2 is not less than the preset maximum door opening angle.

[0084] Furthermore, the determination method further comprises the following steps:

[0085] A fourth trajectory line is fitted, and when the rotation axis of the door body is located on the fourth trajectory line, during the rotation of the door body, one end of the rear wall of the door body located on the pivoting side is tangent to the box body;

[0086] The target area is located on a side of the fourth trajectory line close to the pivot side 21 .

[0087] When the door body rotation axis is located on the side of the fourth trajectory close to the pivot side 21, there is a gap between the end of the rear wall of the door body 2 located on the pivot side 21 and the box body 1. Therefore, when the door body rotation axis is located on the side of the fourth trajectory close to the pivot side 21 or on the fourth trajectory, during the rotation of the door body 2, there will be no interference between the end of the rear wall of the door body 2 located on the pivot side 21 and the box body 1.

[0088] Furthermore, the above-mentioned “fitting a fourth trajectory line” specifically includes 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 -B2 ) / 2B to draw the fourth trajectory line in the XY coordinate system, wherein B represents the second gap between the door body and the box body when the door body is in a closed state, and T represents the thickness value of the door body.

[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. The determined target area is located within the width range of the door body when it is in a closed state. Of course, this is not limited to the embodiment in which the rotation axis of the door body is arranged outside the door body, the value range of x can also be adaptively expanded.

[0092] Specifically, Figure 2 As shown, the hinge installation side 23 of the door body 2 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.

[0093] It can be understood that the point N is located at the rear wall of the door body 2 at one end of the pivot side 21 .

[0094] 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. Figure 7 As shown in the figure, assuming that the distance from the door body rotation axis to point N is R2, and the distance from the axis to the back is C, then during the rotation of door body 2, point N moves on a circle with a radius of R2 around the axis (x, y). 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: R2-C≤B, y=TC and x 2 +C 2 =R2 2 , take R2-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.

[0095] It can be understood that when R2-C=B, during the rotation of the door body 2, point N on the door body 2 is tangent to the box body 1.

[0096] 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 and the range of x 0≤x≤L can be plotted Figure 7 The fourth trajectory F shown. If the center of the circle is each point in the fourth trajectory F, and the distance from the fourth trajectory F to point N is used as the radius, then the circle passing through point N will be tangent to the box 1, that is, when the rotation axis of the door body is located on the fourth trajectory F, during the rotation of the door body 2, the N points on the door body 2 are tangent to the box 1. If the center of the circle is at a point on the side of the fourth trajectory F close to the pivot side 21, the circle passing through point N will have a gap with the box 1, that is, when the rotation axis of the door body is located on the side of the fourth trajectory F close to the pivot side 21, during the rotation of the door body 2, there will be a gap between the N points and the box 1. If the center of the circle is at a point on the side of the fourth trajectory F away from the pivot side 21, the circle passing through point N will overlap with the box 1, that is, when the rotation axis of the door body is located on the side of the fourth trajectory F away from the pivot side 21, during the rotation of the door body 2, there will be interference between the N points and the box 1. Therefore, the target area is further defined as being located on a side of the fourth trajectory line close to the pivot side 21 , so that there is no interference between the door body 2 and the box body 1 during the rotation of the door body 2 .

[0097] like Figure 7 As shown, the target area defined by the first trajectory line G and the second trajectory line H is located within the target area defined by the fourth trajectory line F, and at the same time, the target area defined by the first trajectory line G and the second trajectory line H is located within the target area defined by the third trajectory line E, that is, when the rotation axis of the door body is located within the target area defined by the first trajectory line G and the second trajectory line H or the first trajectory line G, the second trajectory line H, and the third trajectory line E, or on the boundary line of the cover target area, during the rotation of the door body 2, it can be satisfied that it will not interfere with the box body 1 and the cabinet 4, and at the same time, the actual maximum opening angle of the door body 2 is not less than the preset maximum opening angle, and the door body 2 will not move inward when it is opened to 90°. Therefore, after the target areas defined by the first trajectory line G and the second trajectory line H have been defined, there is no need to consider the fourth trajectory line F.

[0098] Based on the above, the fourth track line F can define the target area alone together with the first track line G. At this time, the boundary line of the target area includes the first track line G and the fourth track line F. When the door body 2 is located in the target area or on the boundary line of the target area, the actual maximum opening angle of the door body 2 is not less than the preset maximum opening angle. At the same time, during the rotation of the door body 2, no interference will be generated between the box body 1.

[0099] Alternatively, the fourth track line F may define the target area together with the first track line G and the third track line E, and in this case, the boundary line of the target area includes the fourth track line F, the first track line G and the third track line E. When the door body 2 is located in the target area or on the boundary line of the target area, the actual maximum opening angle of the door body 2 is not less than the preset maximum opening angle, and at the same time, during the rotation of the door body 2, no interference will be generated between the box body 1 and the cabinet 4.

[0100] During the rotation of the door body 2, the door body rotation axis is always located within the target area defined by the first trajectory line and the second trajectory line, thereby ensuring that the door body rotation axis is set at a position that allows the door body 2 to neither interfere with the cabinet 4 nor the box 1 during the rotation. Compared with the prior art method of manually adjusting the door body rotation axis based on experience, the present invention can be adjusted within a determined target area, ensuring that no matter how the adjustment is performed, the cabinet 4 and the box 1 will not be interfered with, thereby avoiding the phenomenon of repeated interference with the cabinet 4 and / or the box 1 during the adjustment process, thereby increasing the adjustment time.

[0101] For further information, see Figure 1-Figure 2 As shown, the present invention also provides a built-in refrigerator, which is embedded in the cabinet 4. The built-in refrigerator includes a box body 1 and a door body 2 rotatably connected to the box body 1 through a hinge 3. During the opening and closing of the door body 2, the door body 2 rotates around the door body rotation axis. The door body rotation axis is set in the target area or on the boundary line of the target area. The method for determining the target area is determined by the above-mentioned method for determining the position of the door body rotation axis, and no further description is given here.

[0102] Specifically, the door body rotation axis can be a physical axis or a virtual axis. For example, when the hinge 3 is a single-axis hinge, the door body rotation axis is the axis of the rotating shaft in the single-axis hinge, that is, the physical axis. When the hinge 3 is a multi-axis hinge, the door body rotation axis is the virtual axis defined by the multiple axes in the multi-axis hinge.

[0103] Below, taking the door rotation axis as a physical axis as an example, a method for determining the door rotation axis of a built-in refrigerator in an implementation method under several specific requirements is explained.

[0104] First embodiment:

[0105] like Figure 7 As shown, the line segment between the intersection point P1 of the first trajectory line G and the second trajectory line H and the origin is defined as the first line segment. After comprehensive consideration, it is finally determined that the door body rotation axis is a certain point on the first line segment, or the door body rotation axis moves on the first line segment. At this time, the actual maximum opening angle of the door body 2 is not less than the preset maximum opening angle. At the same time, during the rotation of the door body 2, there will be no interference with the box body 1 and the cabinet 4, and the door body 2 will not move inward after opening to 90°.

[0106] In a specific implementation, A=4, V=120°, and the coordinates of point P1 can be obtained as (-5.46, 5.46). Taking into account the diameter strength requirements of the hinge shaft, the diameter of the hinge shaft is set to be greater than or equal to 6 mm. In addition, considering the installation of the hinge shaft on the door body 2, point P1 is finally selected as the axis point. During the rotation of the door body 2 around point P1, there is no interference with the cabinet 4 and the box body 1, and the maximum door opening angle is 120°. At the same time, the door body 2 will not move inward when opened to 90°.

[0107] Second implementation method:

[0108] The difference between this embodiment and the first embodiment is that: Figure 8 As shown, the door hinge device 3 includes an upper hinge device 33 and a lower hinge device 34. The upper hinge device 33 and the lower hinge device 34 each have a hinge seat 31 and a hinge shaft 32. The upper hinge device 33 is used as an example for explanation below. It is known to those skilled in the art that the lower hinge device 34 can be designed according to the installation form of the upper hinge device 33 on the door body 2 and the box body 1.

[0109] The front wall 22 of the door body 2 is higher than the hinge 3, so as to achieve the purpose of hiding the hinge 3, which is beneficial to the overall appearance of the built-in refrigerator.

[0110] Specifically, the top side of the door body 2 (i.e., the hinge installation side 23) is located higher than the top side of the box body 1, and the hinge installation side 23 of the top side of the door body 2 has a groove 231. The hinge seat 31 of the upper hinge device 33 spans the top side of the box body 1 and the groove 231 of the door body 2, so as to hide the upper door body hinge device 3 at the rear side of the door body 2.

[0111] See also Figure 8The groove 231 passes through the pivot side 21, the upper hinge installation side 23 and the rear side of the door body 2. That is to say, the groove 231 does not pass through the front wall 22 of the door body 2. When the door body 2 is in a closed state, the groove 231 cannot be seen when observing the refrigerator from the front, and thus the upper door hinge device 3 cannot be seen, thereby hiding the upper door hinge device 3 in the groove 231, thereby ensuring the aesthetics of the door body 2.

[0112] The hinge seat 31 of the upper hinge device 33 can be configured in a rectangular shape, and one long side of the rectangular structure is aligned with the top outer edge of the box body 1, and is also aligned with the top outer edge of the door body 2 when the door body 2 is in a closed state. It can be understood that since the groove 231 of the door body 2 does not penetrate the front wall 22 of the door body 2, the hinge seat 31 has a side located on the pivot side 21 as shown in FIG. Fig. 9 The avoidance portion 311 shown can avoid the front wall 22 of the door body 2 when the door body 2 is opened to a larger angle, so as to smoothly install the hinge seat 31 on the top side of the box body 1 and the door body 2.

[0113] Furthermore, in this embodiment, in order to avoid assembly interference between the upper hinge device 33 and the door body 2, compared with the first embodiment, the hinge shaft 32 needs to be closer to the box body 1. The hinge shaft 32 is arranged on the line between the intersection of the third track line E and the second track line H and the intersection P1.

[0114] In a specific example, if the actual maximum door opening angle of the door body 2 is to be not less than the preset maximum door opening angle, the coordinates of the door body rotation axis can be selected as (-11.59, 9).

[0115] Third embodiment:

[0116] The third embodiment of the present invention is different from the first embodiment in that the door body 2 is a glass door body, which is more scratch-resistant and has various patterns and colors, and can be matched with furniture and the like at will.

[0117] Because the front wall 22 of the glass door body is a glass panel with a certain thickness, and the door body plastic trim that fixes the glass door body also needs to have a certain wall thickness, a bonding gap of tape or hot melt adhesive needs to be set between the door body plastic trim and the glass panel. Therefore, for the glass door body, the hinge axis needs to be at a greater distance from the front wall 22 of the door body 2. At this time, the position of the door body rotation axis can be determined in the overlapping area of ​​the third track line E away from the box body 1, the fourth track line F toward the pivot side 21, the first track line G away from the pivot side 21, and the second track line H away from the pivot side 21, or on the first track line G in the overlapping area. For example, the coordinates of the door body rotation axis can be selected as (-15, 11).

[0118] In summary, the method for determining the position of the door body rotation axis in the present invention can determine the target area of ​​the door body rotation axis, so that debugging can be performed outside the determined target area, and the actual maximum door opening angle of the door body can be ensured to be not less than the preset maximum door opening angle. Compared with the method of artificially debugging and continuously determining the appropriate door body rotation axis based on experience in the prior art, the present invention can determine the debugging area and debugging direction as needed, thereby avoiding the phenomenon of repeatedly failing to open the door to the preset maximum door opening angle during the debugging process, thereby increasing the debugging time.

[0119] 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.

[0120] 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 method for determining the rotation axis of a door of a built-in refrigerator, wherein the built-in refrigerator is embedded in a cabinet and comprises a cabinet and a door rotatably connected to the cabinet through a hinge; characterized in that: The determination method comprises the following steps: Obtaining a preset maximum door opening angle of the door body; Fitting a first trajectory line, when the rotation axis of the door body is located on the first trajectory line, the actual maximum door opening angle of the door body is equal to the preset maximum door opening angle; The target area is determined to be located on the side of the first trajectory away from the pivoting side, and during the rotation of the door body, the rotation axis of the door body is determined to be located within the target area or on the boundary line of the target area.

2. The method for determining the rotation axis of the door of a built-in refrigerator according to claim 1, characterized in that: When the door body is in a closed state, the target area is located on the hinge installation side of the door body.

3. The method for determining the rotation axis of the door of a built-in refrigerator according to claim 1, characterized in that: "Fitting the first trajectory line" specifically includes the following steps: An XY coordinate system is constructed by taking a first intersection line between the front wall of the door body in a closed state and the hinge installation side of the door body as an X-axis, a second intersection line between the pivot side of the door body in a closed state and the hinge installation side of the door body as a Y-axis, and taking the intersection point of the X-axis and the Y-axis as the origin; The first 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 of the door body and the cabinet when the door body is in a closed state.

4. The method for determining the rotation axis of the door of a built-in refrigerator according to claim 3, characterized in that: The range of y in the formula x=y*tanV / 2-A is -T / 2≤y≤T, wherein T represents the thickness value of the door body.

5. The method for determining the rotation axis of the door of a built-in refrigerator according to claim 1, characterized in that: The determination method further comprises the following steps: An XY coordinate system is constructed by taking a first intersection line between the front wall of the door body in a closed state and the hinge installation side of the door body as an X-axis, a second intersection line between the pivot side of the door body in a closed state and the hinge installation side of the door body as a Y-axis, and taking the intersection point of the X-axis and the Y-axis as the origin; A second trajectory line is drawn in the XY coordinate system according to the formula x=y; when the rotation axis of the door body is located on the second trajectory line, the third gap between the front wall of the door body and the cabinet when the door body is rotated to 90° 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; It is determined that the target area is simultaneously located on a side of the second trajectory line close to the pivoting side.

6. A built-in refrigerator, embedded in a cabinet, comprising a box body and a door body rotatably connected to the box body by a hinge, wherein the door body rotates around a door body rotation axis during opening and closing of the door body; characterized in that: 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 pivot side; when the door body rotation axis is located on the first trajectory line, the actual maximum door opening angle of the door body is equal to the preset maximum door opening angle.

7. The built-in refrigerator according to claim 6, characterized in that: When the door body is in a closed state, the target area is located on the hinge installation side of the door body.

8. The built-in refrigerator according to claim 6, characterized in that: The first trajectory line is a curve drawn in an XY coordinate system constructed according to the formula x=y*tanV / 2-A, with the first intersection line of the front wall of the door body in the closed state and the hinge installation side of the door body as the X-axis, the second intersection line of the pivot side of the door body in the closed state and the hinge installation side of the door body as the Y-axis, and the intersection of the X-axis and the Y-axis as the origin, wherein A represents the first gap between the pivot side of the door body and the cabinet when the door body is in the closed state, and V represents the preset maximum door opening angle.

9. The built-in refrigerator according to claim 6, characterized in that: The target area is also located on a side of the second trajectory line close to the pivot side, and the second trajectory line is a straight line drawn in an XY coordinate system constructed according to the formula x=y, with the first intersection line of the front wall of the door body in the closed state and the hinge installation side of the door body as the X-axis, the second intersection line of the pivot side of the door body in the closed state and the hinge installation side of the door body as the Y-axis, and the intersection of the X-axis and the Y-axis as the origin; when the rotation axis of the door body is located on the second 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 the closed state.

10. The built-in refrigerator according to claim 6, characterized in that: The door body rotation axis is a physical axis or a virtual axis.

11. The built-in refrigerator according to claim 6, characterized in that: The front wall of the door body is higher than the hinge, and a side of the hinge located at the pivoting side has an escape portion.

12. The built-in refrigerator according to claim 6, characterized in that: The door body is a glass door body.

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