Hinge device and refrigeration equipment

Abstract

The utility model provides a hinge device and refrigeration equipment, and the hinge device comprises a fixed hinge part which is used for being fixed on a box body of the refrigeration equipment, a movable hinge part which is used for being fixed on a door body of the refrigeration equipment, and a connecting rod assembly which is used for movably connecting the movable hinge part to the fixed hinge part, the fixed hinge piece comprises a first hinge plate used for being connected with the connecting rod assembly, the first hinge plate is perpendicular to the plane where the opening side of the box body is located, and a boundary line is formed between the plane where the first hinge plate is located and the plane where the opening side of the box body is located. The first hinge plate is provided with a first hinge point and a second hinge point which are used for being rotationally connected with the connecting rod assembly, and the acute angle of the included angle between the extension line of the connecting line of the first hinge point and the second hinge point and the boundary line is not larger than 45 degrees. The overall strength of the hinge device can be improved, the door body is prevented from drooping, and the stability of the hinge device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration equipment, in particular to a hinge device and refrigeration equipment with the hinge device. Background Art

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

[0003] Some existing refrigeration equipment uses a hinge device with a connecting rod assembly to flexibly connect the door body to the box body. When the door body is opened relative to the box body, the door body rotates and translates along a preset trajectory under the drive of the connecting rod assembly. The structure is simple and can avoid interference between the door body and external environmental parts. However, the overall strength of the existing hinge device is relatively weak. After long-term use, the door body is prone to drooping, resulting in uneven joints, which affects the sealing effect of the door body and also affects the coordination and aesthetics between the embedded refrigeration equipment and the external environmental parts. Utility Model Content

[0004] The utility model provides a hinge device and refrigeration equipment having the hinge device.

[0005] In order to achieve the above-mentioned purpose, the technical solution provided by the utility model is as follows: a hinge device, including a fixed hinge part fixed to a box body of a refrigeration device, a movable hinge part fixed to a door body of the refrigeration device, and a connecting rod assembly that movably connects the movable hinge part to the fixed hinge part, the fixed hinge part includes a first hinge plate for connecting the connecting rod assembly, the first hinge plate is perpendicular to the plane where the opening side of the box body is located, and the plane where the first hinge plate is located and the plane where the opening side of the box body is located have an intersection line; the first hinge plate is provided with a first hinge point and a second hinge point for rotationally connecting with the connecting rod assembly, and the acute angle between the extension line of the line connecting the first hinge point and the second hinge point and the intersection line is not greater than 45°.

[0006] As a further improvement of the present invention, the acute angle between the extended line of the line connecting the first hinge point and the second hinge point and the intersection line is 25° to 45°.

[0007] As a further improvement of the present invention, the side on which the movable hinge rotates relative to the fixed hinge is taken as the rotating side, the first hinge plate has a fixed rotating end located on the rotating side, and the acute angle between the angle between the extension line of the line connecting the first hinge point and the second hinge point and the intersection line is located on the side of the extension line facing the fixed rotating end.

[0008] As a further improvement of the present invention, the distance between the first hinge point and the fixed rotating end is smaller than the distance between the second hinge point and the fixed rotating end; the distance between the second hinge point and the fixed rotating end is greater than the distance between the second hinge point and the boundary line.

[0009] As a further improvement of the present invention, the distance between the first hinge point and the boundary line is 24 mm to 26 mm; and / or the distance between the first hinge point and the fixed rotating end is 8 mm to 9 mm.

[0010] As a further improvement of the present invention, the distance between the first hinge point and the fixed rotating end is smaller than the distance between the second hinge point and the fixed rotating end; the movable hinge has a movable rotating end located on the rotating side, a third hinge point, and a fourth hinge point located on the side of the third hinge point away from the movable rotating end; the connecting rod assembly includes:

[0011] a first connecting rod, one end of which is hinged to the first hinge point;

[0012] a second connecting rod, one end of which is hinged to the second hinge point, the second connecting rod having a fifth hinge point located at one end away from the second hinge point, and a sixth hinge point located between the second hinge point and the fifth hinge point;

[0013] a third link, one end of the third link being hinged to the third hinge point, one end of the third link being away from the third hinge point being hinged to the sixth hinge point, the third link having a seventh hinge point located between the third hinge point and the sixth hinge point, and one end of the first link being away from the first hinge point being hinged to the seventh hinge point;

[0014] A fourth connecting rod, one end of which is hinged to the fourth hinge point, and the other end of which is hinged to the fifth hinge point.

[0015] As a further improvement of the present invention, the movable hinge has a closed state and an open state away from the fixed hinge; when the movable hinge is in the closed state and the open state, the quadrilateral formed by the lines connecting the first hinge point and the second hinge point, the line connecting the second hinge point and the sixth hinge point, the line connecting the sixth hinge point and the seventh hinge point, and the line connecting the seventh hinge point and the first hinge point is a convex quadrilateral.

[0016] As a further improvement of the present invention, the movable hinge has a closed state and an open state that rotates relative to the fixed hinge; when the movable hinge is in the closed state and the open state, the quadrilateral formed by the lines connecting the third hinge point and the sixth hinge point, the line connecting the sixth hinge point and the fifth hinge point, the line connecting the fifth hinge point and the fourth hinge point, and the line connecting the fourth hinge point and the third hinge point is a convex quadrilateral.

[0017] As a further improvement of the present invention, the movable hinge has a closed state and an open state away from the fixed hinge; when the movable hinge is in the closed state, the third hinge point and the fourth hinge point are both located on the side of the first hinge point and the second hinge point away from the boundary line.

[0018] As a further improvement of the present invention, the movable hinge has a closed state and an open state away from the fixed hinge; when the movable hinge is in the open state and the angle between it and the fixed hinge is 90°, the third hinge point and the fourth hinge point are both located on the side of the first hinge point and the second hinge point facing the rotating side.

[0019] In order to achieve the above-mentioned purpose of the utility model, the utility model also provides a refrigeration device, including a box body, a door body for opening or closing the box body, and the above-mentioned hinge device.

[0020] Compared with the prior art, the beneficial effect of the utility model lies in that the hinge device in the utility model, by setting the first hinge point and the second hinge point connected to the connecting rod assembly in the fixed hinge part installed on the box body so that the acute angle of the angle between the extension line of the connection line of the two and the intersection line is not greater than 45°, thereby increasing the lateral distance between the first hinge point and the second hinge point, increasing the force-bearing area of ​​the fixed hinge part, and improving the overall strength of the hinge device, avoiding sagging of the door body, and improving the stability of the hinge device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a refrigeration device having a hinge device in the first embodiment of the utility model;

[0022] Figure 2 yes Figure 1 A top view of the refrigeration unit shown (door body is in closed state);

[0023] Figure 3 yes Figure 1 A schematic diagram of the structure of a hinge device in a refrigeration device shown (the door body is in a closed state);

[0024] Figure 4 yes Figure 3 Exploded diagram of

[0025] Figure 5 yes Figure 3 An exploded view of the fixed hinge member in FIG.

[0026] Figure 6 yes Figure 3 A schematic diagram of the structure of the second connecting rod in FIG.

[0027] Figure 7 yes Figure 6 An exploded view of the second connecting rod in FIG.

[0028] Figure 8 yes Figure 3 A schematic diagram of the structure of the hinge device after the movable hinge is opened to 90°;

[0029] Fig. 9 yes Figure 3 A schematic diagram of the structure of the hinge device after the movable hinge is opened to the maximum opening angle;

[0030] Fig.10 is a schematic structural diagram of a hinge device in a second embodiment of the present utility model;

[0031] Fig.11 yes Fig.10 Exploded diagram of . DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the following will be combined with the attached specific implementation of the present invention. Figure 1-11 , clearly and completely describe the technical solutions in the implementation of the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementation. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0033] The words expressing position and direction described in this utility model are as follows: when the refrigerator is in normal use, the direction from the cabinet to the door is the "front", and the direction opposite to the "front" is the "rear", and the "rear" refers to the direction from the door to the cabinet. The terms first, second, third, fourth, etc. in this utility model are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated; in addition, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, the connection can be a direct connection or an indirect connection through an intermediate medium, and can be a fixed connection, a movable connection, a detachable connection, or an integrated connection. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0034] Please refer to Figure 1 As shown, the utility model provides a hinge device 3 and a refrigeration device 100 having the hinge device 3. Figure 1 FIG. 1 is a partial schematic diagram showing a refrigeration device 100 in a specific embodiment of the present invention embedded in a cabinet 200, wherein only the cabinet 200 located on one side is shown. It is known that in actual installation, the refrigeration device 100 is completely embedded in the cabinet 200. Of course, it is understandable that the refrigeration device 100 does not necessarily have to be embedded in the cabinet 200, but can also be embedded in the wall, or used alone.

[0035] In a specific implementation, the refrigeration device 100 is a vertical refrigerator, but the invention is not limited thereto.

[0036] Specifically, the refrigeration device 100 includes a box body 1 with an opening, a door body 2 for opening or closing the opening, and a hinge device 3 connected between the box body 1 and the door body 2. The hinge device 3 is used to movably connect the door body 2 to the opening side of the box body 1, so that the door body 2 can be switched between a closed state and an open state, and the door body 2 can be translated along a preset trajectory while rotating, so as to avoid interference between the door body 2 and the cabinet 200.

[0037] Combination Figure 2 to Figure 9 As shown, the hinge device 3 includes a fixed hinge 31 fixed to the box body 1, a movable hinge 32 fixed to the door body 2, and a connecting rod assembly 33 that movably connects the movable hinge 32 to the fixed hinge 31. The connecting rod assembly 33 has a folded state and an unfolded state. When the connecting rod assembly 33 is in the folded state, the door body 2 is in a closed state; when the connecting rod assembly 33 is in the unfolded state, the door body 2 is in an open state.

[0038] It can be known that the movable hinge 32 moves synchronously with the door body 2. When the door body 2 is in a closed state, that is, the movable hinge 32 is in a closed state, at this time, the movable hinge 32 is close to the fixed hinge 31; when the door body 2 is in an open state, the movable hinge 32 is in an open state, at this time, the movable hinge 32 is away from the fixed hinge 31.

[0039] The fixed hinge member 31 includes a first hinge plate 312 for connecting the connecting rod assembly 33. The first hinge plate 312 is perpendicular to the plane where the opening side of the box body 1 is located. The plane where the first hinge plate 312 is located and the plane where the opening side of the box body 1 is located have a boundary line L 1 At the same time, it is defined that the direction in the plane where the first hinge plate 312 is located and parallel to the plane where the opening side of the box body 1 is located is the horizontal direction X, and the direction in the plane where the first hinge plate 312 is located and perpendicular to the plane where the opening side of the box body 1 is located is the longitudinal direction Y, and the horizontal direction X is perpendicular to the longitudinal direction Y.

[0040] Specifically, the horizontal direction X is the left-right direction, and the vertical direction Y is the front-back direction.

[0041] Specifically, the first hinge plate 312 is provided with a first hinge point A and a second hinge point B for rotationally connecting with the connecting rod assembly 33, and the extension line of the line connecting the first hinge point A and the second hinge point B and the intersection line L 1 The acute angle α in the included angle is not greater than 45°, that is, the lateral distance L between the first hinge point A and the second hinge point B in the lateral direction X 2 Greater than the longitudinal distance L in the longitudinal direction Y 3 The lateral distance between the first hinge point A and the second hinge point B can be increased, the force-bearing area of ​​the first hinge plate 312 (fixed hinge 31) in the lateral direction X can be increased, and the force-bearing area of ​​the first hinge plate 312 as a whole can be increased, so as to improve the overall strength of the hinge device 3, prevent the door body 2 from sagging, and improve the stability of the hinge device 3.

[0042] Furthermore, the extension line of the line connecting the first hinge point A and the second hinge point B and the intersection line L 1 The acute angle of the included angle is 25° to 45°. The opening of the door body can be ensured while taking into account the overall strength of the hinge device 3.

[0043] In a specific embodiment, the side of the movable hinge 32 that rotates relative to the fixed hinge 31 is defined as the rotating side, and the first hinge plate 312 has a fixed rotating end P1 located on the rotating side. 1The acute angle in the included angle is located on the side of the extension line facing the fixed rotating end P1.

[0044] Specifically, the distance between the first hinge point A and the fixed rotating end P1 is smaller than the distance between the second hinge point B and the fixed rotating end P1. At this time, the distance between the first hinge point A and the boundary line L 1 The distance between the second hinge point B and the boundary line L is greater than 1 distance.

[0045] In a specific embodiment, the fixed hinge 31 further includes a first fixed plate 311 for fixing to the box body 1, the first hinge plate 312 is connected to the first fixed plate 311, and the first hinge plate 312 is perpendicular to the first fixed plate 311. At this time, the first fixed plate 311 is used to fix to the plane where the opening side of the box body 1 is located, and the above-mentioned boundary line L 1 That is, it refers to the connection line between the first fixing plate 311 and the first hinge plate 312. Of course, it is not limited to this. In other embodiments, the first fixing plate 311 and the first hinge plate 312 may also be located in the same plane, that is, the fixing hinge 31 is flat as a whole. In this case, the first fixing plate 311 is used to be fixed to the upper end surface or the lower end surface of the box body 1.

[0046] It can be understood that the first hinge point A is 1.5 km from the boundary line L. 1 The distance between the first hinge point A and the first fixing plate 311 is the distance between the second hinge point B and the boundary line L. 1 The distance refers to the distance between the second hinge point B and the first fixing plate 311.

[0047] Furthermore, the distance between the first hinge point A and the first fixing plate 311 is 24 mm to 26 mm. By setting the distance between the first hinge point A and the first fixing plate 311 to be larger, the distance between the first hinge point A and the cabinet 1 is larger, so that the door body 2 can have a larger forward movement when it rotates to open, thereby further avoiding interference between the door body 2 and the cabinet 200 during the rotation process.

[0048] Furthermore, the direction along the horizontal direction X toward the rotating side is defined as the first direction, and the direction opposite to the first direction is defined as the second direction. The distance between the first hinge point A and the fixed rotating end P1 is 8 mm to 9 mm. By setting the distance between the first hinge point A and the fixed rotating end P1 to be smaller, the distance between the first hinge point A and the plane where the side wall of the box body 1 on the rotating side is located is smaller, so that the door body 2 can have more lateral displacement along the first direction when it is rotated to open, that is, the distance that the door body 2 moves away from the rotating side along the first direction is greater, thereby increasing the opening of the door body 2 and preventing the door body 2 from affecting the pulling and drawing of drawers / shelves in the box body 1.

[0049] Furthermore, the distance between the second hinge point B and the fixed rotating end P1 is greater than the distance between the second hinge point B and the first fixed plate 311. The force bearing area of ​​the first hinge plate 312 (fixed hinge member 31) in the horizontal direction X can be further increased, and the force bearing area of ​​the first hinge plate 312 as a whole is increased, so that the overall strength of the hinge device 3 can be improved, the door body 2 can be prevented from sagging, and the stability of the hinge device 3 can be improved.

[0050] The movable hinge 32 has a movable rotating end P2 located at the rotating side, a third hinge point C, and a fourth hinge point D located at a side of the third hinge point C away from the movable rotating end P2. Specifically, the movable hinge 32 includes a second fixed plate 321 fixed to the door body 2, a second hinge plate 322 connected to the second fixed plate 321, and the third hinge point C and the fourth hinge point D are both provided on the second hinge plate 322. It is known that the second hinge plate 322 is perpendicular to the second fixed plate 321.

[0051] In a specific embodiment, the connecting rod assembly 33 includes a first connecting rod 331 with one end hinged at a first hinge point A, a second connecting rod 332 with one end hinged at a second hinge point B, a third connecting rod 333 with one end hinged at a third hinge point C, and a fourth connecting rod 334 with one end hinged at a fourth hinge point D. One end of the second connecting rod 332 away from the second hinge point B and one end of the fourth connecting rod 334 away from the fourth hinge point D are hinged at a fifth hinge point E. One end of the third connecting rod 333 away from the third hinge point C is hinged at a sixth hinge point F located at the second connecting rod 332, and the sixth hinge point F is located between the second hinge point B and the fifth hinge point E. One end of the first connecting rod 331 away from the first hinge point A is hinged at a seventh hinge point G located at the third connecting rod 333, and the seventh hinge point G is located between the third hinge point C and the sixth hinge point F. Of course, this is not limited to this. In other embodiments, the connection method between the various connecting rods can also be set to that the end of the second connecting rod 332 away from the second hinge point B is hinged to the end of the fourth connecting rod 334 away from the fourth hinge point D, the end of the first connecting rod 331 away from the first hinge point A is hinged to the middle section of the fourth connecting rod 334, and the end of the third connecting rod 333 away from the third hinge point C is hinged to the middle section of the first connecting rod 331. The connection position and connection relationship between the rods can be adjusted according to specific trajectory requirements.

[0052] Specifically, the connecting rod assembly 33 and the fixed hinge 31 and the movable hinge 32 form two quadrilaterals, which are respectively quadrilateral ABFG formed by the line AB between the first hinge point A and the second hinge point B, the line BF between the second hinge point B and the sixth hinge point F, the line FG between the sixth hinge point F and the seventh hinge point G, and the line GA between the seventh hinge point G and the first hinge point A, and quadrilateral CDEF formed by the line CF between the third hinge point C and the sixth hinge point F, the line EF between the sixth hinge point F and the fifth hinge point E, the line ED between the fifth hinge point E and the fourth hinge point D, and the line CD between the fourth hinge point D and the third hinge point C. In the process of the door body 2 rotating and opening, the door body 2 is driven to translate according to a preset trajectory through the deformation of the two quadrilaterals.

[0053] Furthermore, the angle formed by the line BF connecting the second hinge point B and the sixth hinge point F and the line FE connecting the sixth hinge point F and the fifth hinge point E is 160° to 180°, preferably 177°. Thus, the second connecting rod 332 and the third connecting rod 333 will not interfere with each other at the sixth hinge point F. Under the condition that the width of the second connecting rod 332 is constant, the second connecting rod 332 does not need to be provided with a groove for making way for the third connecting rod 333, which can improve the overall strength of the second connecting rod 332, thereby improving the overall strength of the hinge device 3.

[0054] In a specific embodiment, in combination Figure 3 As shown, the angle β formed by the line BF connecting the second hinge point B and the sixth hinge point F and the line FE connecting the sixth hinge point F and the fifth hinge point E toward the movable hinge 32 is 160° to 180°.

[0055] Furthermore, when the movable hinge 32 is in the closed state and the open state, the quadrilateral ABFG formed by the line AB between the first hinge point A and the second hinge point B, the line BF between the second hinge point B and the sixth hinge point F, the line FG between the sixth hinge point F and the seventh hinge point G, and the line AG between the seventh hinge point G and the first hinge point A is a convex quadrilateral. That is, when the door body 2 is in the closed state and the open state, the quadrilateral ABFG formed by the line AB between the first hinge point A and the second hinge point B, the line BF between the second hinge point B and the sixth hinge point F, the line FG between the sixth hinge point F and the seventh hinge point G, and the line AG between the seventh hinge point G and the first hinge point A is always a convex quadrilateral, avoiding the occurrence of dead points in the process of opening and closing the door body 2, and improving the smoothness of opening and closing the door body 2.

[0056] It should be noted that the above-mentioned dead point refers to the point where the inner angle is located when the corresponding angle is 180° when the quadrilateral becomes a triangle during the process of opening and closing the door body 2.

[0057] Furthermore, in the quadrilateral ABFG formed by the line AB connecting the first hinge point A and the second hinge point B, the line BF connecting the second hinge point B and the sixth hinge point F, the line FG connecting the sixth hinge point F and the seventh hinge point G, and the line AG connecting the seventh hinge point G and the first hinge point A, the line AG connecting the first hinge point A and the seventh hinge point G is the longest, which can enable the door body 2 to have more forward movement when it is rotated to open, thereby further avoiding interference between the door body 2 and the cabinet 200 during rotation.

[0058] Further, in the quadrilateral ABFG formed by the line AB between the first hinge point A and the second hinge point B, the line BF between the second hinge point B and the sixth hinge point F, the line FG between the sixth hinge point F and the seventh hinge point G, and the line AG between the seventh hinge point G and the first hinge point A, the sum of the line AB between the first hinge point A and the second hinge point B and the line AG between the first hinge point A and the seventh hinge point G is greater than the sum of the line BF between the second hinge point B and the sixth hinge point F and the line FG between the sixth hinge point F and the seventh hinge point G. On the one hand, it can reduce the volume of the connecting rod assembly 33 in the folded state, thereby reducing the distance between the door body 2 and the box body 1 when in the closed state, and improving the sealing of the door body 2; on the other hand, it is more conducive to making the door body 2 have more lateral displacement along the horizontal direction X and toward the rotating side when rotating to open, thereby increasing the opening of the door body 2 and preventing the door body 2 from affecting the pulling and drawing of drawers / shelves in the box body 1.

[0059] Specifically, when the movable hinge 32 is in the closed state, in the quadrilateral ABFG formed by the line AB between the first hinge point A and the second hinge point B, the line BF between the second hinge point B and the sixth hinge point F, the line FG between the sixth hinge point F and the seventh hinge point G, and the line AG between the seventh hinge point G and the first hinge point A, the inner angles B and G corresponding to the second hinge point B and the seventh hinge point G are obtuse angles, and the inner angles A and F corresponding to the first hinge point A and the sixth hinge point F are acute angles. The volume of the connecting rod assembly 33 in the folded state can be reduced, thereby reducing the distance between the door body 2 and the box body 1 in the closed state, and improving the sealing performance of the door body 2.

[0060] Furthermore, when the movable hinge 32 is in the closed state, the line between the second hinge point B and the sixth hinge point F extends obliquely in a direction away from the first fixed plate 311 from the second hinge point B toward the sixth hinge point F. In the early stage of the door body 2 rotating and opening from the closed state, that is, when the door body 2 rotates and opens from the closed state to the first opening angle, the forward movement of the door body 2 is larger than the translation in other horizontal directions, and the rotation angle is smaller, which is conducive to the smooth opening of the door body 2.

[0061] When the door body 2 is rotated and opened from the closed state to the first opening angle, the door body 2 is mainly driven by the expansion of the quadrilateral ABFG formed by the line AB connecting the first hinge point A and the second hinge point B, the line BF connecting the second hinge point B and the sixth hinge point F, the line FG connecting the sixth hinge point F and the seventh hinge point G, and the line AG connecting the seventh hinge point G and the first hinge point A. That is, when the door body 2 is rotated and opened from the closed state to the first opening angle, the line A connecting the first hinge point A and the second hinge point B B. The expansion range of the quadrilateral ABFG formed by the line BF between the second hinge point B and the sixth hinge point F, the line FG between the sixth hinge point F and the seventh hinge point G, and the line AG between the seventh hinge point G and the first hinge point A is greater than the expansion range of the quadrilateral CDEF formed by the line CF between the third hinge point C and the sixth hinge point F, the line EF between the sixth hinge point F and the fifth hinge point E, the line ED between the fifth hinge point E and the fourth hinge point D, and the line CD between the fourth hinge point D and the third hinge point C.

[0062] In a specific implementation, the first opening angle is 10° to 15°, but is not limited thereto.

[0063] Further, when the movable hinge 32 is in the closed state and the open state, the quadrilateral CDEF formed by the line CF between the third hinge point C and the sixth hinge point F, the line EF between the sixth hinge point F and the fifth hinge point E, the line ED between the fifth hinge point E and the fourth hinge point D, and the line CD between the fourth hinge point D and the third hinge point C is a convex quadrilateral. That is, when the door body 2 is in the closed state and the open state, the quadrilateral CDEF formed by the line CF between the third hinge point C and the sixth hinge point F, the line EF between the sixth hinge point F and the fifth hinge point E, the line ED between the fifth hinge point E and the fourth hinge point D, and the line CD between the fourth hinge point D and the third hinge point C is always a convex quadrilateral, avoiding the occurrence of dead points in the process of opening and closing the door body 2, and improving the smoothness of opening and closing the door body 2.

[0064] Furthermore, when the movable hinge 32 is in the closed state and the open state, the line CF connecting the third hinge point C and the sixth hinge point F is located on the side of the line FG connecting the sixth hinge point F and the seventh hinge point G away from the first fixed plate 311. The quadrilateral ABFG formed by the line AB connecting the first hinge point A and the second hinge point B, the line BF connecting the second hinge point B and the sixth hinge point F, the line FG connecting the sixth hinge point F and the seventh hinge point G, and the line AG connecting the seventh hinge point G and the first hinge point A, and the quadrilateral CDEF formed by the line CF connecting the third hinge point C and the sixth hinge point F, the line EF connecting the sixth hinge point F and the fifth hinge point E, the line ED connecting the fifth hinge point E and the fourth hinge point D, and the line CD connecting the fourth hinge point D and the third hinge point C do not cross each other, and no interference occurs, thereby improving the smoothness of opening and closing the door body 2.

[0065] Further, in the quadrilateral CDEF formed by the line CF between the third hinge point C and the sixth hinge point F, the line EF between the sixth hinge point F and the fifth hinge point E, the line ED between the fifth hinge point E and the fourth hinge point D, and the line CD between the fourth hinge point D and the third hinge point C, the sum of the line EF between the sixth hinge point F and the fifth hinge point E and the line ED between the fifth hinge point E and the fourth hinge point D is greater than the sum of the line CF between the third hinge point C and the sixth hinge point F and the line CD between the fourth hinge point D and the third hinge point C. A large-angle door opening can be achieved, that is, the maximum opening angle of the door body 2 is increased, and the opening degree of the door body 2 is increased, which is convenient for users to take and put items.

[0066] Specifically, when the movable hinge 32 is in a closed state, in the quadrilateral CDEF formed by the line CF connecting the third hinge point C and the sixth hinge point F, the line EF connecting the sixth hinge point F and the fifth hinge point E, the line ED connecting the fifth hinge point E and the fourth hinge point D, and the line CD connecting the fourth hinge point D and the third hinge point C, the internal angles corresponding to the sixth hinge point F and the fourth hinge point D are obtuse angles, and the internal angles corresponding to the third hinge point C and the fifth hinge point E are acute angles. When the movable hinge 32 is in a closed state, the two quadrilaterals formed by the connecting rod assembly 33, the fixed hinge 31 and the movable hinge 32 are folded and flattened in the front-to-back direction, which can reduce the volume of the connecting rod assembly 33 in the folded state, thereby reducing the distance between the door body 2 and the box body 1 when in a closed state, and improving the sealing performance of the door body 2.

[0067] Combination Figure 8-Figure 9As shown in the figure, in the process of the door body 2 continuing to rotate and open from 90° to the maximum opening angle, the door body 2 is mainly driven by the expansion of the quadrilateral CDEF formed by the line CF between the third hinge point C and the sixth hinge point F, the line EF between the sixth hinge point F and the fifth hinge point E, the line ED between the fifth hinge point E and the fourth hinge point D, and the line CD between the fourth hinge point D and the third hinge point C. That is, in the process of the door body 2 continuing to rotate and open from 90° to the maximum opening angle, the third hinge point C and the sixth hinge point F are connected to form a quadrilateral CDEF. The expansion range of the quadrilateral CDEF formed by the line CF connecting point F, the line EF connecting the sixth hinge point F and the fifth hinge point E, the line ED connecting the fifth hinge point E and the fourth hinge point D, and the line CD connecting the fourth hinge point D and the third hinge point C is greater than the expansion range of the quadrilateral ABFG formed by the line AB connecting the first hinge point A and the second hinge point B, the line BF connecting the second hinge point B and the sixth hinge point F, the line FG connecting the sixth hinge point F and the seventh hinge point G, and the line AG connecting the seventh hinge point G and the first hinge point A.

[0068] Specifically, in the process of the door body 2 continuing to rotate from 90° to open to the maximum opening angle, the door body 2 synchronously translates backward and along the second direction toward the direction close to the box body 1, that is, the translation direction of the door body 2 has directional components in the backward direction and the second direction, so that the door body 2 moves backward and along the second direction toward the direction close to the box body 1, and the center of gravity of the door body 2 moves toward the box body 1, so as to prevent the door body 2 from tipping over.

[0069] Furthermore, when the movable hinge 32 is in an open state and the angle between it and the fixed hinge 31 is 90°, the opening angle of the door body 2 is 90°, and the third hinge point C and the fourth hinge point D are both located on the side of the first hinge point A and the second hinge point B facing the rotating side. In the middle of the opening of the door body 2, that is, when the door body 2 opens from the first opening angle to 90°, the door body 2 has a large lateral displacement along the first direction, that is, the distance that the door body 2 exceeds the box body 1 in the first direction is increased, which can increase the opening of the door body 2 and prevent the door body 2 from affecting the pulling and drawing of the drawers / shelves in the box body 1.

[0070] In a specific embodiment, when the door body 2 is opened to 90 degrees, the distance that the door body 2 exceeds the box body 1 in the first direction is 21.4 mm. Of course, this is not limited to this.

[0071] Furthermore, when the movable hinge 32 is in a closed state, the third hinge point C and the fourth hinge point D are both located on the side of the first hinge point A and the second hinge point B away from the first fixed plate 311. The forward displacement of the door body 2 during the rotation and opening process can be increased, and interference between the door body 2 and the cabinet 200 can be further avoided, thereby increasing the maximum opening angle of the door body 2. It is known that in the process of the door body 2 opening from the first opening angle to 90°, the door body 2 not only translates along the first direction, but also translates forward, that is, the translation direction of the door body 2 has a first direction and a forward component vector.

[0072] In a specific embodiment, when the movable hinge 32 is in a closed state, the line CD connecting the third hinge point C and the fourth hinge point D is parallel to the plane where the first fixed plate 311 is located. That is, the line CD connecting the third hinge point C and the fourth hinge point D is parallel to the plane where the door body 2 is located. Of course, this is not limited to this.

[0073] In a specific embodiment, in combination Figure 2 As shown, along the longitudinal direction Y, the distance L between the first hinge point A and the third hinge point 4 The diameter is 0 to 12 mm, preferably 9.5 mm.

[0074] Combination Figure 2 As shown, it can be understood that the distance L between the first hinge point A and the third hinge point is 4 is the distance between the axis center of the rotating shaft at the first hinge point A and the axis center of the rotating shaft at the third hinge point, so that the distance L between the first hinge point A and the third hinge point is 4 It is not less than the sum of the radius of the rotating shaft located at the first hinge point A and the radius of the rotating shaft located at the third hinge point.

[0075] Further, the first connecting rod 331 is a single-layer connecting rod, the second connecting rod 332, the third connecting rod 333, and the fourth connecting rod 334 are all double-layer connecting rods, the end of the first connecting rod 331 away from the first hinge point A is hinged to the seventh hinge point G inside the third connecting rod 333, the end of the third connecting rod 333 away from the third hinge point C is hinged to the sixth hinge point F inside the second connecting rod 332, and the end of the fourth connecting rod 334 away from the fourth hinge point D is hinged to the fifth hinge point E inside the second connecting rod 332. The strength of the connecting rod assembly 33 can be improved, thereby improving the overall strength of the hinge device 3, and preventing the door body 2 from sagging.

[0076] Specifically, the second link 332, the third link 333, and the fourth link 334 each include two first plates 34 spaced apart in the vertical direction, and a second plate 35 connecting the two first plates 34 on one side of the width direction of the first plate 34. For the second link 332, the second plate 35 is disposed on the side of the second link 332 away from the third link 333 and the fourth link 334, for the third link 333, the second plate 35 is disposed on the side of the third link 333 away from the first link 331, and for the fourth link 334, the second plate 35 is disposed on the side of the fourth link 334 away from the third link 333, so as to avoid interference between the links when the link assembly 33 switches from the unfolded state to the folded state.

[0077] Furthermore, the fixed hinge 31 and the movable hinge 32 are both double-layer structures to further improve the overall strength of the hinge device 3 and prevent the door body 2 from sagging.

[0078] Specifically, the fixed hinge member 31 includes two first hinge plates 312 disposed at the upper and lower ends of the first fixed plate 311 and extending in the same direction, and the first connecting rod 331 and the second connecting rod 332 are respectively hinged at the first hinge point A and the second hinge point B between the two first hinge plates 312. The movable hinge member 32 includes two second hinge plates 322 disposed at the upper and lower ends of the second fixed plate 321 and extending in the same direction, and the third connecting rod 333 and the fourth connecting rod 334 are respectively hinged at the third hinge point C and the fourth hinge point D between the two second hinge plates 322.

[0079] Furthermore, the hinge device 3 also includes a power-assisted folding mechanism 36 for keeping the connecting rod assembly 33 in a folded state, so as to keep the door body 2 in a closed state and prevent the door body 2 from being loosely closed.

[0080] Combination Figures 2 to 9As shown, it is a hinge device 3 in the first embodiment of the utility model, and the power-assisted folding mechanism 36 in the hinge device 3 includes a hook 361 provided on one of the fixed hinge member 31 and the second connecting rod 332, and a block 362 provided on the other. After the door body 2 rotates and closes until the hook 361 hooks the block 362, the connecting rod assembly 33 is kept in the folded state to keep the door body 2 in the closed state to avoid the door body 2 from being closed tightly. It is known that when the door body 2 rotates and closes until the block 362 squeezes the hook 361 from the outside of the hook 361 until the block 362 is located on the inside of the hook 361, under the action of the elastic restoring force of the hook 361, the block 362 will be pulled to move relative to the hook 361 until the hook 361 hooks the block 362, thereby driving the door body 2 to rotate toward the box body 1 to achieve power-assisted door closing. Of course, this is not the only limitation.

[0081] In a specific implementation, the hook 361 is disposed at an end of the fixed hinge 31 away from the rotating side, and the block 362 is fixed to an end of the second connecting rod 332 away from the second hinge point B. Of course, this is not limited thereto.

[0082] Furthermore, the hook 361 is rotatably connected to the fixed hinge 31 in the horizontal direction; the hinge device 3 further includes a first limiting structure 37 disposed between the fixed hinge 31 and the hook 361, and the first limiting structure 37 is used to limit the rotation of the hook 361 relative to the fixed hinge 31. This facilitates the assembly between the hook 361 and the fixed hinge 31.

[0083] Specifically, the fixed hinge 31 further comprises a connecting plate 313 connected to one end of the first hinge plate 312 away from the rotating side. The first limiting structure 37 comprises a limiting groove 371 provided on one of the hook 361 and the connecting plate 313, and a limiting column 372 provided on the other.

[0084] Furthermore, the second connecting rod 332 has a hinge shaft 335 at one end away from the second hinge point B, and the second connecting rod 332 and the fourth connecting rod 334 are hinged to the hinge shaft 335. The clamping block 362 is sleeved on the hinge shaft 335, and the hinge device 3 further includes a second limiting structure 38 provided between the clamping block 362 and the second connecting rod 332, and the second limiting structure 38 is used to limit the rotation of the clamping block 362 around the hinge shaft 335. The assembly of the clamping block 362 is simplified.

[0085] Specifically, the second limiting structure 38 is an L-shaped abutting groove provided on the side of the clamping block 362 facing the second plate 35, and the L-shaped abutting groove abuts against the end surface of the second plate 35 and the wall surface of the second plate 35 facing the movable hinge 32. Thus, the clamping block 362 can be limited from rotating around the hinge shaft 335.

[0086] Combination Figure 10 to Figure 11 As shown, it is a hinge device 3a in the second embodiment of the utility model. The difference between the second embodiment of the utility model and the first embodiment is that the power-assisted folding mechanism 36a is different.

[0087] Specifically, in this embodiment, the auxiliary folding mechanism 36a includes a guide plate 363 fixed to one end of the second connecting rod 332 near the fifth hinge point E, and an elastic component provided on the fourth connecting rod 334. The outer edge profile of the guide plate 363 has a limiting recess 3631, and the limiting recess 3631 is located on the side of the guide plate 363 facing the second hinge point B. The elastic component includes a seat body 364 connected to the fourth connecting rod 334, an elastic member 365 fixed to the seat body 364 and protruding toward the fifth hinge point E, and a push block 366 connected to the elastic member 365 and abutting against the outer edge profile of the guide plate 363. When the connecting rod assembly 33 switches between the unfolded state and the folded state, under the action of the elastic restoring force of the elastic member 365, the push block 366 always abuts against the outer edge profile of the guide plate 363 and moves along the outer edge profile of the guide plate 363. When the connecting rod assembly 33 is in the folded state, under the action of the elastic restoring force of the elastic member 365, the push block 366 is abutted against the limiting recess 3631, and the limiting recess 3631 limits the movement of the push block 366 along the outer edge contour of the guide plate 363, so that the connecting rod assembly 33 can be maintained in the folded state to keep the door body 2 in the closed state and avoid the door body 2 from being loosely closed.

[0088] Furthermore, the outer edge profile of the guide plate 363 also includes a guiding slope 3632 connected to the limiting recess 3631. The guiding slope 3632 is located at one end of the limiting recess 3631 close to the movable hinge, that is, the end away from the second plate 35. Along the direction close to the limiting recess 3631, the guiding slope 3632 extends obliquely toward the fifth hinge point E. After the connecting rod assembly 33 switches from the unfolded state to the folded state until the push block 366 is located on the guiding slope 3632, under the action of the elastic restoring force of the elastic member 365, the push block 366 automatically moves along the guiding slope 3632, driving the connecting rod assembly 33 to automatically fold, playing a certain role in assisting the door closing.

[0089] Specifically, the connection structure and the limiting structure between the guide plate 363 and the second connecting rod 332 may adopt the connection structure and the limiting structure between the block 362 and the second connecting rod 332 in the first embodiment, and will not be described in detail here.

[0090] Specifically, the seat body 364 includes a seat body 3641, a fixed shaft 3642 connected to the seat body 3641 and protruding toward the fifth hinge point E, the push block 366 is provided with a fixed shaft hole on one side of the seat body 364, the fixed shaft 3642 is movably connected to the fixed shaft hole along its axial direction, the elastic member 365 is a spring sleeved on the fixed shaft 3642, and one end of the spring abuts against the seat body 3641, and the other end abuts against the bottom wall of the fixed shaft hole. When the connecting rod assembly 33 gradually unfolds from the folded state, the push block 366 moves along the guide slope 3632 toward the guide plate 363 away from the second plate 35, and at this time, the spring is further compressed.

[0091] Furthermore, a guide slot 3341 extending along the length direction of the fourth connecting rod 334 is provided through the position on the fourth connecting rod 334 corresponding to the push block 366, and the push block 366 is provided with a stop block 3662 matched with the guide slot 3341. Thus, the moving direction of the push block 366 can be limited, and the stability of the hinge device 3 is improved.

[0092] Furthermore, the seat body 3641 is penetrated by a first fixing hole 3643, and the fourth connecting rod 334 is penetrated by a second fixing hole 3342 corresponding to the first fixing hole 3643. The hinge device 3 also includes a fastener 39 for simultaneously inserting the second fixing hole 3342 and the second fixing hole 3342. By aligning the first fixing hole 3643 with the second fixing hole 3342, and then simultaneously inserting the fastener 39 into the first fixing hole 3643 and the second fixing hole 3342, the elastic component can be assembled to the fourth connecting rod 334, thereby simplifying the assembly between the elastic component and the fourth connecting rod 334.

[0093] Specifically, the push block 366 comprises a push block seat, a rolling member 3663 connected to one end of the push block seat facing the guide plate 363, and the rolling member 3663 abuts against the outer edge contour of the guide plate 363. The friction between the push block 366 and the guide plate 363 is reduced, and the smoothness of the power-assisted folding mechanism 36 is improved.

[0094] In a specific implementation, the limit block 3662 is disposed on the rolling member 3663 , but this is not limiting.

[0095] The hinge device 3a in the second embodiment of the present invention is the same as the hinge device 3 in the first embodiment except for the above-mentioned differences; details will not be repeated here.

[0096] In summary, the hinge devices 3, 3a in the present invention are configured such that the first hinge point A and the second hinge point B connected to the connecting rod assembly 33 in the fixed hinge part 31 installed on the box body 1 are configured such that the acute angle between the extended line of the line connecting the first hinge point A and the second hinge point B and the intersection line is not greater than 45°, thereby increasing the lateral distance between the first hinge point A and the second hinge point B, increasing the force-bearing area of ​​the fixed hinge part 31, improving the overall strength of the hinge device 3, avoiding sagging of the door body 2, and improving the stability of the hinge devices 3, 3a.

[0097] It should be understood that although the present specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method 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 embodiment may also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0098] The series of detailed descriptions listed above are only specific descriptions of feasible embodiments of the utility model and are not intended to limit the protection scope of the utility model. Any equivalent embodiments or changes that do not deviate from the technical spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A hinge device, comprising a fixed hinge part for fixing to a box body of a refrigeration device, a movable hinge part for fixing to a door body of the refrigeration device, and a connecting rod assembly for movably connecting the movable hinge part to the fixed hinge part, wherein the fixed hinge part comprises a first hinge plate for connecting the connecting rod assembly, the first hinge plate is perpendicular to the plane where the opening side of the box body is located, and the plane where the first hinge plate is located and the plane where the opening side of the box body is located have a boundary line; characterized in that: The first hinge plate is provided with a first hinge point and a second hinge point for rotationally connecting with the connecting rod assembly, and the acute angle between the extended line of the connecting line of the first hinge point and the second hinge point and the intersection line is not greater than 45°; The side where the movable hinge rotates relative to the fixed hinge is the rotating side, the first hinge plate has a fixed rotating end located on the rotating side, and the distance between the first hinge point and the fixed rotating end is smaller than the distance between the second hinge point and the fixed rotating end; the movable hinge has a movable rotating end located on the rotating side, a third hinge point, and a fourth hinge point located on the side of the third hinge point away from the movable rotating end; the connecting rod assembly includes: a first connecting rod, one end of which is hinged to the first hinge point; a second connecting rod, one end of which is hinged to the second hinge point, the second connecting rod having a fifth hinge point located at one end away from the second hinge point, and a sixth hinge point located between the second hinge point and the fifth hinge point; a third link, one end of the third link being hinged to the third hinge point, one end of the third link being away from the third hinge point being hinged to the sixth hinge point, the third link having a seventh hinge point located between the third hinge point and the sixth hinge point, and one end of the first link being away from the first hinge point being hinged to the seventh hinge point; A fourth connecting rod, one end of which is hinged to the fourth hinge point, and the other end of which is hinged to the fifth hinge point.

2. The hinge device according to claim 1, characterized in that: The acute angle between the extended line of the line connecting the first hinge point and the second hinge point and the boundary line is 25° to 45°.

3. The hinge device according to claim 1, characterized in that: The acute angle of the angle between the extension line of the line connecting the first hinge point and the second hinge point and the boundary line is located on the side of the extension line facing the fixed rotating end.

4. The hinge device according to claim 3, characterized in that: The distance between the first hinge point and the fixed rotating end is smaller than the distance between the second hinge point and the fixed rotating end; the distance between the second hinge point and the fixed rotating end is larger than the distance between the second hinge point and the boundary line.

5. The hinge device according to claim 3, characterized in that: The distance between the first hinge point and the boundary line is 24 mm to 26 mm; and / or the distance between the first hinge point and the fixed rotating end is 8 mm to 9 mm.

6. The hinge device according to claim 1, characterized in that: The movable hinge has a closed state and an open state away from the fixed hinge; when the movable hinge is in the closed state and the open state, the quadrilateral formed by the lines connecting the first hinge point and the second hinge point, the line connecting the second hinge point and the sixth hinge point, the line connecting the sixth hinge point and the seventh hinge point, and the line connecting the seventh hinge point and the first hinge point is a convex quadrilateral.

7. The hinge device according to claim 1, characterized in that: The movable hinge has a closed state and an open state that rotates relative to the fixed hinge; when the movable hinge is in the closed state and the open state, the quadrilateral formed by the lines connecting the third hinge point and the sixth hinge point, the line connecting the sixth hinge point and the fifth hinge point, the line connecting the fifth hinge point and the fourth hinge point, and the line connecting the fourth hinge point and the third hinge point is a convex quadrilateral.

8. The hinge device according to claim 1, characterized in that: The movable hinge has a closed state and an open state away from the fixed hinge; when the movable hinge is in the closed state, the third hinge point and the fourth hinge point are both located on the side of the first hinge point and the second hinge point away from the boundary line.

9. The hinge device according to claim 1, characterized in that: The movable hinge has a closed state and an open state away from the fixed hinge; when the movable hinge is in the open state and the angle between it and the fixed hinge is 90°, the third hinge point and the fourth hinge point are both located on the side of the first hinge point and the second hinge point facing the rotating side.

10. A refrigeration device, comprising a box body and a door body for opening or closing the box body, characterized in that: The refrigeration device further comprises a hinge device as claimed in any one of claims 1 to 9.

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