Hinge device and refrigeration equipment

Abstract

The utility model provides a hinge device and refrigeration equipment, the hinge device comprises a first hinge piece, a second hinge piece and a connecting rod assembly, the relative rotation side of the first hinge piece and the second hinge piece is taken as the rotation side, the first hinge piece is provided with a first hinge point and a second hinge point in sequence along the direction far away from the rotation side, and the second hinge piece is provided with a second hinge point. The second hinge piece is sequentially provided with a third hinge point and a fourth hinge point; the connecting rod assembly comprises a single-layer connecting rod, a first double-layer connecting rod, a second double-layer connecting rod and a third double-layer connecting rod which are hinged to a first hinge point, a second hinge point, a third hinge point and a fourth hinge point respectively. The strength 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, comprising a first hinge, a second hinge, and a connecting rod assembly that movably connects the first hinge and the second hinge, one of the first hinge and the second hinge is used to be fixed to a box body, and the other is used to be fixed to a door body, with the side where the first hinge and the second hinge rotate relative to each other as the rotating side, and in the direction away from the rotating side, the first hinge is sequentially provided with a first hinge point and a second hinge point, and the second hinge is sequentially provided with a third hinge point and a fourth hinge point; the connecting rod assembly comprises:

[0006] A single-layer connecting rod, wherein the single-layer connecting rod is in the shape of a horizontal plate, and one end of the single-layer connecting rod is hinged to the first hinge point;

[0007] a first double-layer connecting rod, one end of which is hinged to the second hinge point, the first double-layer 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;

[0008] a second double-layer connecting rod, one end of the second double-layer connecting rod being hinged to the third hinge point, one end of the second double-layer connecting rod away from the third hinge point being hinged to the sixth hinge point inside the first double-layer connecting rod, the second double-layer connecting rod having a seventh hinge point located between the third hinge point and the sixth hinge point, and one end of the single-layer connecting rod away from the first hinge point being hinged to the seventh hinge point inside the second double-layer connecting rod;

[0009] A third double-layer 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 inside the first double-layer connecting rod.

[0010] As a further improvement of the present invention, the first hinge component includes a first fixed plate and two first hinge plates extending in the same direction from the upper and lower ends of the first fixed plate, the first hinge point and the second hinge point are arranged on the first hinge plate, and the single-layer connecting rod and the first double-layer connecting rod are respectively hinged at the first hinge point and the second hinge point between the two first hinge plates; the second hinge component includes a second fixed plate and two second hinge plates extending in the same direction from the upper and lower ends of the second fixed plate, the third hinge point and the fourth hinge point are arranged on the second hinge plate, and the second double-layer connecting rod and the third double-layer connecting rod are respectively hinged at the third hinge point and the fourth hinge point between the two second hinge plates.

[0011] As a further improvement of the present invention, the first double-layer connecting rod, the second double-layer connecting rod and the third double-layer connecting rod each include two first plates spaced apart in the vertical direction and a second plate connecting the two first plates on one side of the width direction of the first plates.

[0012] As a further improvement of the present invention, the first hinge is used to be fixed to the box body, and the second hinge is used to be fixed to the door body.

[0013] As a further improvement of the present invention, the first hinge member 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 is located, the direction within the plane where the first hinge plate is located and parallel to the plane where the opening side of the box is located is the transverse direction, and the direction within the plane where the first hinge plate is located and perpendicular to the plane where the opening side of the box is located is the longitudinal direction, and the transverse distance between the first hinge point and the second hinge point in the transverse direction is greater than the longitudinal distance in the longitudinal direction.

[0014] As a further improvement of the present invention, the distance between the first hinge point and the first fixing plate is greater than the distance between the second hinge point and the first fixing plate.

[0015] As a further improvement of the present invention, the second hinge member has a closed state and an open state away from the first hinge member; when the second hinge member 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 first hinge member includes a first fixed plate for fixing to the box body, and a first hinge plate connected to the first fixed plate and used to connect the connecting rod assembly; when the second hinge member is in a closed state, the line between the second hinge point and the sixth hinge point extends obliquely in the direction away from the first fixed plate from the second hinge point toward the sixth hinge point.

[0017] As a further improvement of the present invention, the first hinge member includes a first fixed plate for fixing to the box body, a first hinge plate connected to the first fixed plate and used to connect the connecting rod assembly, and the first hinge point and the second hinge point are both arranged on the first hinge plate; when the second hinge member is in a 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 first fixed plate.

[0018] 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.

[0019] Compared with the prior art, the beneficial effect of the present invention is that the hinge device in the present invention arranges the connecting rod in the connecting rod assembly as a single-layer and double-layer nested arrangement, thereby improving the strength of the connecting rod assembly, being able to improve 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

[0020] Figure 1 It is a structural schematic diagram of a refrigeration device in a specific embodiment of the utility model;

[0021] Figure 2 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);

[0022] Figure 3 yes Figure 2 Exploded view in ;

[0023] Figure 4 yes Figure 2 an exploded view of the first hinge member;

[0024] Figure 5 yes Figure 2 A schematic diagram of the structure of the second connecting rod in FIG.

[0025] Figure 6 yes Figure 5 An exploded view of the second connecting rod in FIG.

[0026] Figure 7 yes Figure 2 A schematic diagram of the structure of the hinge device after the second hinge member is opened to 90°;

[0027] Figure 8 yes Figure 2 Schematic diagram of the structure of the hinge device after the second hinge part is opened to the maximum opening angle. DETAILED DESCRIPTION

[0028] 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 1-8 , 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.

[0029] 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.

[0030] 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 1A partial schematic diagram of a refrigeration device 100 in a specific embodiment of the utility model embedded in a cabinet 200 is shown, wherein only the cabinet 200 located on one side is shown. It can be seen that in actual installation, the refrigeration device 100 is completely embedded in the cabinet 200. Of course, it can be understood 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.

[0031] In a specific implementation, the refrigeration device 100 is a vertical refrigerator, but the invention is not limited thereto.

[0032] 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 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 to avoid interference between the door body 2 and the cabinet 200.

[0033] The hinge device 3 includes a first hinge member 31, a second hinge member 32, and a connecting rod assembly 33 that movably connects the first hinge member 31 and the second hinge member 32. One of the first hinge member 31 and the second hinge member 32 is used to be fixed to the box body 1, and the other is used to be fixed to the door body 2. 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.

[0034] Taking the side where the first hinge 31 and the second hinge 32 rotate relative to each other as the rotating side, along the direction away from the rotating side, the first hinge 31 is sequentially provided with a first hinge point A and a second hinge point B, and the second hinge 32 is sequentially provided with a third hinge point C and a fourth hinge point D.

[0035] In a specific embodiment, the connecting rod assembly 33 includes a single-layer connecting rod 331 in the shape of a horizontal plate with one end hinged at the first hinge point A, a first double-layer connecting rod 332 with one end hinged at the second hinge point B, a second double-layer connecting rod 333 with one end hinged at the third hinge point C, and a third double-layer connecting rod 334 with one end hinged at the fourth hinge point D. One end of the first double-layer connecting rod 332 away from the second hinge point B and one end of the third double-layer connecting rod 334 away from the fourth hinge point D are hinged at the fifth hinge point E, and one end of the third double-layer connecting rod 334 at the fourth hinge point D is hinged at the fifth hinge point E inside the first double-layer connecting rod 332. One end of the second double-layer connecting rod 333 away from the third hinge point C is hinged to the sixth hinge point F of the first double-layer connecting rod 332 inside the first double-layer 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 single-layer connecting rod 331 away from the first hinge point A is hinged to the seventh hinge point G of the second double-layer connecting rod 333 inside the second double-layer connecting rod 333, and the seventh hinge point G is located between the third hinge point C and the sixth hinge point F. 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.

[0036] Specifically, the first double-layer connecting rod 332, the second double-layer connecting rod 333, and the third double-layer connecting rod 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 first double-layer connecting rod 332, the second plate 35 is disposed on a side of the first double-layer connecting rod 332 away from the second double-layer connecting rod 333 and the third double-layer connecting rod 334, for the second double-layer connecting rod 333, the second plate 35 is disposed on a side of the second double-layer connecting rod 333 away from the single-layer connecting rod 331, and for the third double-layer connecting rod 334, the second plate 35 is disposed on a side of the third double-layer connecting rod 334 away from the second double-layer connecting rod 333, so as to avoid interference between the connecting rods when the connecting rod assembly 33 switches from the self-expanding state to the folding state.

[0037] Furthermore, the first hinge member 31 and the second hinge member 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.

[0038] Specifically, the first hinge member 31 includes a first fixed plate 311, two first hinge plates 312 extending in the same direction from the upper and lower ends of the first fixed plate 311, the first hinge point A and the second hinge point B are arranged on the first hinge plate 312, and the single-layer connecting rod 331 and the first double-layer connecting rod 332 are respectively hinged between the two first hinge plates 312 at the first hinge point A and the second hinge point B. At this time, the first fixed plate 311 is used to be fixed to the plane where the opening side of the box body 1 is located, and the first hinge plate 312 is perpendicular to the plane where the opening side of the box body 1 is located.

[0039] The second hinge member 32 includes a second fixed plate 321, two second hinge plates 322 extending in the same direction from the upper and lower ends of the second fixed plate 321, the third hinge point C and the fourth hinge point D are arranged on the second hinge plate 322, the second hinge member 32 has a movable rotating end P2 located on the rotating side, and the fourth hinge point D is located on the side of the third hinge point C away from the movable rotating end P2. The second double-layer connecting rod 333 and the third double-layer 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.

[0040] In the present embodiment, the first hinge member 31 is used to be fixed to the box body 1, and the second hinge member 32 is used to be fixed to the door body 2. Of course, this is not limited to it. In other embodiments, the first hinge member 31 can also be used to be fixed to the door body 2, and the second hinge member 32 can also be used to be fixed to the box body 1.

[0041] It can be known that after the second hinge 32 is fixed to the door body 2, the second hinge 32 moves synchronously with the door body 2. When the door body 2 is in a closed state, that is, the second hinge 32 is in a closed state, at this time, the second hinge 32 is close to the first hinge 31; when the door body 2 is in an open state, the second hinge 32 is in an open state, at this time, the second hinge 32 is away from the first hinge 31.

[0042] The direction in the plane where the first hinge plate 312 is located and parallel to the plane where the first fixed plate 311 is located is the transverse direction X, and the direction in the plane where the first hinge plate 312 is located and perpendicular to the plane where the first fixed plate 311 is located is the longitudinal direction Y, and the transverse direction X is perpendicular to the longitudinal direction Y. The transverse distance between the first hinge point A and the second hinge point B in the transverse direction X is greater than the longitudinal distance in the longitudinal direction Y. The 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 (first hinge member 31) in the transverse direction X is increased, and the force-bearing area of ​​the first hinge plate 312 as a whole is increased, which can 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.

[0043] Specifically, the horizontal direction X is the left-right direction, and the vertical direction Y is the front-back direction.

[0044] The first hinge plate 312 has a fixed rotating end P1 located on the rotating side, 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, and the distance between the first hinge point A and the first fixed plate 311 is greater than the distance between the second hinge point B and the first fixed plate 311.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] Specifically, the connecting rod assembly 33 and the first hinge member 31 and the second hinge member 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 deformation of the two quadrilaterals is used to drive the door body 2 to translate according to the preset trajectory.

[0049] Furthermore, when the second 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.

[0050] 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.

[0051] 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.

[0052] Furthermore, 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.

[0053] Specifically, when the second hinge member 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 corresponding to the second hinge point B and the seventh hinge point G are obtuse angles, and the inner angles 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.

[0054] Furthermore, when the second hinge member 32 is in the closed state, the line BF between the second hinge point B and the sixth hinge point F extends obliquely in a direction away from the first fixing 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.

[0055] 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.

[0056] In a specific implementation, the first opening angle is 10° to 15°, but is not limited thereto.

[0057] Further, when the second 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.

[0058] Furthermore, when the second hinge member 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 fixing 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.

[0059] 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.

[0060] Specifically, when the second hinge 32 is in the closed state, 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 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 second hinge 32 is in the closed state, the two quadrilaterals formed by the connecting rod assembly 33 and the first hinge 31 and the second 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 the closed state, and improving the sealing performance of the door body 2.

[0061] Combination Figure 7 , Figure 8As 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.

[0062] 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.

[0063] Furthermore, when the second hinge 32 is in the open state and the angle between the second hinge 32 and the first 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 close to the rotating side of the first hinge point A and the second hinge point B. In the middle stage 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.

[0064] 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.

[0065] Furthermore, when the second hinge member 32 is in the 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 fixing plate 311. This can increase the forward movement of the door body 2 during the rotation and opening process, and further avoid interference between the door body 2 and the cabinet 200.

[0066] 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.

[0067] In a specific embodiment, when the second hinge member 32 is in a closed state, the line connecting the third hinge point C and the fourth hinge point D is parallel to the plane where the first fixing plate 311 is located. That is, the line 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.

[0068] 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.

[0069] In a specific embodiment, the power-assisted folding mechanism 36 includes a hook 361 provided on one of the first hinge 31 and the first double-layer 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 a closed state to prevent the door body 2 from being loosely closed. 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 is 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 limited to this.

[0070] In a specific implementation, the hook 361 is disposed at an end of the first hinge member 31 away from the rotating side, and the block 362 is fixed to an end of the first double-layer connecting rod 332 away from the second hinge point B. Of course, this is not limited thereto.

[0071] Furthermore, the hook 361 is rotatably connected to the first hinge member 31 in the horizontal direction; the hinge device 3 further includes a first limiting structure 37 disposed between the first hinge member 31 and the hook 361, and the first limiting structure 37 is used to limit the rotation of the hook 361 relative to the first hinge member 31. This can facilitate the assembly between the hook 361 and the first hinge member 31.

[0072] Specifically, the first hinge member 31 further comprises a connecting plate 313 connected to an 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.

[0073] Furthermore, the first double-layer connecting rod 332 has a hinge shaft 335 at one end away from the second hinge point B, and the first double-layer connecting rod 332 and the third double-layer 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 first double-layer 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.

[0074] 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 second hinge member 32. Thus, the clamping block 362 can be limited from rotating around the hinge shaft 335.

[0075] In summary, the hinge device 3 in the present invention sets the connecting rod in the connecting rod assembly 33 as a single-layer and double-layer nested setting, which improves the strength of the connecting rod assembly 33, can improve the overall strength of the hinge device 3, avoid sagging of the door body 2, and improve the stability of the hinge device 3.

[0076] 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.

[0077] 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 first hinge, a second hinge, and a connecting rod assembly movably connecting the first hinge and the second hinge, wherein one of the first hinge and the second hinge is fixed to a box body, and the other is fixed to a door body, and the side where the first hinge and the second hinge rotate relative to each other is the rotating side, and in a direction away from the rotating side, the first hinge is provided with a first hinge point and a second hinge point in sequence, and the second hinge is provided with a third hinge point and a fourth hinge point in sequence; characterized in that: The connecting rod assembly comprises: A single-layer connecting rod, wherein the single-layer connecting rod is in the shape of a horizontal plate, and one end of the single-layer connecting rod is hinged to the first hinge point; a first double-layer connecting rod, one end of which is hinged to the second hinge point, the first double-layer 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 second double-layer connecting rod, one end of the second double-layer connecting rod being hinged to the third hinge point, one end of the second double-layer connecting rod away from the third hinge point being hinged to the sixth hinge point inside the first double-layer connecting rod, the second double-layer connecting rod having a seventh hinge point located between the third hinge point and the sixth hinge point, and one end of the single-layer connecting rod away from the first hinge point being hinged to the seventh hinge point inside the second double-layer connecting rod; A third double-layer 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 inside the first double-layer connecting rod.

2. The hinge device according to claim 1, characterized in that: The first hinge component includes a first fixed plate and two first hinge plates extending in the same direction from the upper and lower ends of the first fixed plate, the first hinge point and the second hinge point are arranged on the first hinge plate, and the single-layer connecting rod and the first double-layer connecting rod are respectively hinged at the first hinge point and the second hinge point between the two first hinge plates; the second hinge component includes a second fixed plate and two second hinge plates extending in the same direction from the upper and lower ends of the second fixed plate, the third hinge point and the fourth hinge point are arranged on the second hinge plate, and the second double-layer connecting rod and the third double-layer connecting rod are respectively hinged at the third hinge point and the fourth hinge point between the two second hinge plates.

3. The hinge device according to claim 1, characterized in that: The first double-layer connecting rod, the second double-layer connecting rod and the third double-layer connecting rod each include two first plates spaced apart in the vertical direction and a second plate connecting the two first plates on one side of the first plates in the width direction.

4. The hinge device according to claim 1, characterized in that: The first hinge is used to be fixed to the box body, and the second hinge is used to be fixed to the door body.

5. The hinge device according to claim 4, characterized in that: The first hinge member 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 is located, the direction in the plane where the first hinge plate is located and parallel to the plane where the opening side of the box is located is the transverse direction, and the direction in the plane where the first hinge plate is located and perpendicular to the plane where the opening side of the box is located is the longitudinal direction, and the transverse distance between the first hinge point and the second hinge point in the transverse direction is greater than the longitudinal distance in the longitudinal direction.

6. The hinge device according to claim 5, characterized in that: The first hinge member also includes a first fixing plate for fixing to the box body, the first hinge plate is connected to the first fixing plate, and the distance between the first hinge point and the first fixing plate is greater than the distance between the second hinge point and the first fixing plate.

7. The hinge device according to claim 4, characterized in that: The second hinge has a closed state and an open state away from the first hinge; when the second 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.

8. The hinge device according to claim 4, characterized in that: The first hinge member includes a first fixed plate for fixing to the box body, and a first hinge plate connected to the first fixed plate and used to connect the connecting rod assembly; when the second hinge member is in a closed state, the line between the second hinge point and the sixth hinge point extends obliquely in the direction away from the first fixed plate from the second hinge point toward the sixth hinge point.

9. The hinge device according to claim 4, characterized in that: The first hinge member includes a first fixed plate for fixing to a box body, a first hinge plate connected to the first fixed plate and used to connect the connecting rod assembly, and the first hinge point and the second hinge point are both arranged on the first hinge plate; when the second hinge member is in a 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 first fixed plate.

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.

Images