Hinge device and refrigeration appliance

Abstract

The application provides a hinge device and a refrigeration equipment. The hinge device comprises a fixed hinge part used for fixing a cabinet, a movable hinge part used for fixing a door body, a connecting rod assembly connecting the movable hinge part with the fixed hinge part, and a door closer arranged on the movable hinge part. The connecting rod assembly has a folded state and an unfolded state. The door closer comprises a fixed block and an elastic part abutting against one end of the fixed block. The fixed block is fixed to the movable hinge part, and the other end of the elastic part moves with the connecting rod assembly switching between the folded state and the unfolded state. The elastic part has an original shape state when the connecting rod assembly is in the folded state and a deformed state when the connecting rod assembly is in the unfolded state, so that the door closer has an effect of keeping the connecting rod assembly in the folded state. The hinge device provided by the application can reduce the thickness of the connecting rod assembly by arranging the door closer on the movable hinge part.

Description

Technical Field

[0001] This application relates to the field of refrigeration equipment technology, and in particular to a hinge device and refrigeration equipment. Background Technology

[0002] With social development and the gradual improvement of living standards, people's demand for the aesthetics of refrigeration equipment is becoming increasingly prominent. Embedding refrigeration equipment into external environmental components, such as cabinets and walls, to achieve a unified home decoration style has become a popular approach.

[0003] Some existing refrigeration equipment uses a hinge device with a linkage assembly to movably connect the door to the cabinet. As the door opens relative to the cabinet, the linkage assembly unfolds, and driven by this assembly, the door rotates while simultaneously translating along a preset trajectory. This structure is simple and avoids interference between the door and external components. To achieve an automatic door closing effect, a door closer structure is installed on the hinge device. However, currently, the door closer is located on the linkage assembly, making it difficult to ensure that the exposed linkage assembly has a small size when the door is open. Summary of the Invention

[0004] The purpose of this application is to provide a hinge device and a cooling device, in which a door closer is set on the hinge assembly for fixing to the movable hinge part of the door body, thereby solving the problem of the large size of the connecting rod assembly when the door is opened in the prior art.

[0005] To achieve one of the aforementioned objectives, one embodiment of this application provides a hinge device, including a fixed hinge for fixing to a box body, a movable hinge for fixing to a door body, a linkage assembly connecting the movable hinge to the fixed hinge, and a door closer disposed on the movable hinge. The linkage assembly has a folded state and an unfolded state. The door closer includes a fixed block and an elastic member with one end abutting against the fixed block. The fixed block is fixed to the movable hinge, and the other end of the elastic member moves as the linkage assembly switches between the folded and unfolded states. The elastic member has a proto-form state when the linkage assembly is in the folded state and a deformed state when the linkage assembly is in the unfolded state, so that the door closer has the effect of keeping the linkage assembly in the folded state.

[0006] In one embodiment of this application, the fixed hinge member is provided with a first hinge point and a second hinge point, and the movable hinge member is provided with a third hinge point and a fourth hinge point.

[0007] The hinge device has a rotating end; the fourth hinge point is located on the side of the third hinge point away from the rotating end; the fourth hinge point is provided with a cam that cooperates with the door closer.

[0008] In one embodiment of this application, the linkage assembly includes a first link hinged to a first hinge point, a second link hinged to a second hinge point, a third link hinged to a third hinge point, and a fourth link hinged to a fourth hinge point. The first link, the second link, the third link, and the fourth link are hinged to each other. The cam and the fourth link are integrally formed. During the process of the linkage assembly switching from a folded state to an unfolded state, the cam pushes the elastic element to compress and deform.

[0009] In one embodiment of this application, the fixed hinge member includes a first hinge plate for connecting the linkage assembly. The first hinge plate has a first edge away from the movable hinge member. The first hinge plate is perpendicular to the plane containing the opening side of the housing, and the first edge is parallel to the plane containing the opening side of the housing. The first hinge plate is provided with a first hinge point and a second hinge point for rotatably connecting with the linkage assembly. The acute angle between the extension of the line connecting the first hinge point and the second hinge point and the first edge is 44° to 46°.

[0010] In one embodiment of this application, the hinge device has a rotating end; the first hinge plate has a second edge located at the rotating end, the distance between the second hinge point and the first edge is less than the distance between the first hinge point and the first edge, and the distance between the second hinge point and the second edge is greater than the distance between the first hinge point and the second edge.

[0011] In one embodiment of this application, the movable hinge includes a second hinge plate for connecting the linkage assembly. The second hinge plate has a third edge away from the fixed hinge. When the linkage assembly is in the folded state, the third edge is parallel to the plane containing the opening side of the housing. The second hinge plate is provided with a third hinge point and a fourth hinge point for rotatably connecting with the linkage assembly. The angle between the extension of the line connecting the third hinge point and the fourth hinge point and the third edge is 8 to 15°.

[0012] In one embodiment of this application, the hinge device has a rotating end; the second hinge plate has a fourth edge located at the rotating end, the distance between the third hinge point and the third edge is less than the distance between the fourth hinge point and the third edge, and the distance between the third hinge point and the fourth edge is less than the distance between the fourth hinge point and the fourth edge.

[0013] In one embodiment of this application, the thickness of the hinge device in the height direction is 15-17 mm.

[0014] In one embodiment of this application, when the connecting rod assembly is in the folded state in a plane direction perpendicular to the opening side of the box, the thickness of the hinge device is 43-48 mm.

[0015] One embodiment of this application also provides a refrigeration device, including a housing, a door for opening or closing the housing, and a hinge device as described above for connecting the housing and the door.

[0016] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0017] In the hinge device provided in this application, the door closer is set on the movable hinge member for fixing to the door body, and can be set together with the movable hinge member within the range of the door body. The door closer does not need to be set on the linkage assembly, which makes the thickness of the linkage assembly smaller in the height direction. When the door is opened, the size of the linkage assembly exposed outside the box and door body is smaller, which has better aesthetics. Attached Figure Description

[0018] Figure 1 This is a schematic diagram illustrating the interaction between the refrigeration equipment and a portion of the cabinets in one embodiment of this application.

[0019] Figure 2 yes Figure 1 A schematic diagram of the hinge device in one embodiment.

[0020] Figure 3 yes Figure 2 Front view of the central hinge mechanism.

[0021] Figure 4 yes Figure 3 Schematic diagram of cross section along line AA.

[0022] Figure 5 yes Figure 2 Top view of the central hinge mechanism when it is opened to 60°.

[0023] Figure 6 yes Figure 5 The exploded view in the image.

[0024] Figure 7 yes Figure 2 A schematic diagram of the structure with the central hinge device opened to 90°.

[0025] Figure 8 yes Figure 2 A schematic diagram of the structure of the central hinge device when opened to its maximum angle.

[0026] 100. Refrigeration equipment; 200. Cabinets;

[0027] 1. Box body; 2. Door body;

[0028] 3. Hinge assembly; 31. Fixed hinge component; 311. First fixed plate; 312. First hinge plate; 3121. First edge; 3122. Second edge; 32. Movable hinge component; 321. Second fixed plate; 322. Second hinge plate; 3221. Third edge; 3222. Fourth edge; 3223. Elongated hole;

[0029] 33. Linkage assembly; 331. First link; 332. Second link; 333. Third link; 334. Fourth link; 3341. Cam;

[0030] 4. Door closer; 41. Sliding component; 411. Connecting post; 42. Spring; 43. Fixing block; 44. Guide cylinder. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0032] The terms used in this document, such as “center,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” indicating spatial relative positions, are used for illustrative purposes to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. The terms “spatial relative positions” may be intended to include different orientations of the equipment in use or operation other than those shown in the figures.

[0033] For example, if the device in the figure is flipped, a unit described as being "below" or "under" other units or features will be "above" other units or features. Therefore, the exemplary term "below" can encompass both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or otherwise) and the spatially related descriptive terms used herein will be interpreted accordingly.

[0034] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] Furthermore, it should be understood that although the terms "first," "second," etc., may be used herein to describe various elements or structures, the objects being described should not be limited by these terms. These terms are only used to distinguish these objects from one another. For example, a first link may be referred to as a second link, and similarly, a second link may be referred to as a first link, without departing from the scope of protection of this application.

[0036] This application embodiment provides a hinge device 3, which can be used in a refrigeration device 100, such as... Figure 1 In this refrigeration device 100, there is a cabinet 1, a door 2 for opening or closing the cabinet 1, and the aforementioned hinge device 3 connecting the cabinet 1 and the door 2. The hinge device 3 is used to movably connect the door 2 to the cabinet 1, allowing the door 2 to switch between a closed state and an open state, and allowing the door 2 to move along a preset trajectory while rotating, so as to avoid interference between the door 2 and the cabinet 200. Therefore, this application embodiment also provides a refrigeration device 100 provided with the aforementioned hinge device 3.

[0037] Figure 1 The diagram shows a partial schematic of the refrigeration device 100 embedded within the cabinet 200. Only one side of the cabinet 200 is shown, indicating that in actual installation, the refrigeration device 100 is fully embedded within the cabinet 200. Of course, it is understood that the refrigeration device 100 may not necessarily be embedded within the cabinet 200; it could also be embedded in the wall or used independently. The hinge device 3 provided in this application is not necessarily only for the refrigeration device 100; it can also be used with other devices having a cabinet body 1 and a door body 2. This application uses the example of the hinge device 3 being installed in the refrigeration device 100.

[0038] like Figure 3 , 4 In the aforementioned hinge device 3, there are a fixed hinge 31 for fixing to the box body 1, a movable hinge 32 for fixing to the door body 2, a linkage assembly 33 connecting the movable hinge 32 to the fixed hinge 31, and a door closer 4 disposed on the movable hinge 32. The linkage assembly 33 has a folded state and an unfolded state. The door closer 4 includes a fixed block 43 and an elastic member with one end abutting against the fixed block 43. The fixed block 43 is fixed to the movable hinge 32, and the other end of the elastic member moves as the linkage assembly 33 switches between the folded state and the unfolded state. The elastic member has the original shape of the linkage assembly 33 when it is in the folded state and the deformed shape of the linkage assembly 33 when it is in the unfolded state, so that the door closer 4 has the effect of keeping the linkage assembly 33 in the folded state.

[0039] It is known that the movable hinge 32 moves synchronously with the door 2. When the linkage assembly 33 is in the folded state, the door 2 is in the closed state, and the movable hinge 32 is also in the closed state; when the linkage assembly 33 is in the unfolded state, the door 2 is in the open state, and the movable hinge 32 is also in the open state.

[0040] like Figure 3 , 4 In this design, the door closer 4 is disposed in the movable hinge 32. On the one hand, this allows the door 2 to have a self-closing effect and ensures that the door 2 is closed, preventing cold leakage due to incomplete closure. On the other hand, since the movable hinge 32 is fixed to the door 2, the door 2 can make way for the hinge device 3. Therefore, the door closer 4 does not need to occupy the thickness of the connecting rod assembly 33 in the vertical direction, and the connecting rod assembly 33 can be designed to be thinner, which is more aesthetically pleasing.

[0041] In one specific embodiment, the fixed hinge member 31 is provided with a first hinge point A and a second hinge point B, and the movable hinge member 32 is provided with a third hinge point C and a fourth hinge point D; the hinge device 3 has a rotating end; the fourth hinge point D is located on the side of the third hinge point C away from the rotating end; a cam 3341 that cooperates with the door closer 4 is provided at the fourth hinge point D.

[0042] The rotating end is defined as follows: when the fixed hinge 31 and the movable hinge 32 rotate relative to each other, the fixed hinge 31 and the movable hinge 32 open and close at an angle, and the end of the hinge device 3 that is far from the opening and closing is the rotating end. Specifically, the end of the fixed hinge 31 that is far from the opening and closing is the fixed rotating end P1, and the end of the movable hinge 32 that is far from the opening and closing is the movable rotating end P2.

[0043] A cam 3341 is provided at the fourth hinge point D position to cooperate with the door closer 4. When the door 2 is opened by force, the hinge device 3 switches from the folded state to the unfolded state, and the cam 3341 abuts against the door closer 4. When the door 2 loses its force, the door closer 4 pushes the cam 3341, so that the hinge device 3 has the tendency to switch from the unfolded state back to the folded state.

[0044] In one specific embodiment, the linkage assembly 33 includes a first link 331 hinged to a first hinge point A, a second link 332 hinged to a second hinge point B, a third link 333 hinged to a third hinge point C, and a fourth link 334 hinged to a fourth hinge point D. The first link 331, second link 332, third link 333, and fourth link 334 are hinged to each other. The cam 3341 is integrally formed with the fourth link 334. During the transition of the linkage assembly 33 from a folded state to an unfolded state, the cam 3341 pushes the elastic element to compress and deform. The integral formation of the cam 3341 and the fourth link 334 reduces the overall size of the linkage assembly 33, thus improving the overall aesthetics of the hinge device 3.

[0045] like Figure 6 In this design, the movable hinge component 32 includes a second hinge plate 322 with a third hinge point C and a fourth hinge point D, and a second fixing plate 321 for fixing to the door body 2. The second fixing plate 321 is connected to the second hinge plate 322 and is used to fix to the rear side of the door body 2. At this time, the second fixing plate 321 is perpendicular to the second hinge plate 322. There are two second hinge plates 322, which are respectively connected to the upper and lower sides of the second fixing plate 321. The two second hinge plates 322 are provided with opposing elongated holes 3223, or in other words, the line connecting the two elongated holes 3223 is perpendicular to the second hinge plate 322.

[0046] The door closer 4 specifically includes a sliding member 41, the aforementioned elastic member, and a fixing block 43. The sliding member 41 is slidably connected to the second hinge plate 322 via an elongated hole 3223. The fixing block 43 is fixed to the second hinge plate 322. One end of the elastic member abuts against the fixing block 43, and the other end abuts against the sliding member 41. During the transition of the linkage assembly 33 from the folded state to the unfolded state, the cam 3341 gradually presses against the sliding member 41, causing the sliding member 41 to move along the length of the elongated hole 3223, thus deforming the elastic member. Therefore, after the door 2 loses its force, the elastic member, under the action of the rebound force, pushes the sliding member 41 to move in the opposite direction. The sliding member 41 pushes the cam 3341 to rotate the fourth linkage 334 in the opposite direction, thereby achieving the effect of automatic door closing.

[0047] In some embodiments, the slider 41 includes a connecting post 411 that passes through the elongated hole 3223 and restricts the slider 41 to move along the length direction of the elongated hole 3223. The length direction of the elastic member is consistent with the length direction of the elongated hole 3223, so that the amount of movement of the slider 41 under the force of the cam 3341 can be completely transmitted to the elastic member without any component. That is, the transmission effect between the elastic member and the slider 41 is optimal.

[0048] In some embodiments, the elastic element is a spring 42, and the door closer 4 further includes a guide cylinder 44, with the spring 42 sleeved on the outside of the guide cylinder 44. The guide cylinder 44 can be integrally formed with the fixing block 43 or can be separately provided and then interconnected. The guide cylinder 44 is provided inside the spring 42, which is an elastic element, to prevent the spring 42 from deflecting when subjected to uneven force.

[0049] In some embodiments, the fixed hinge member 31 includes a first hinge plate 312 for connecting the link assembly 33. The first hinge plate 312 has a first edge 3121 away from the movable hinge member 32. The first hinge plate 312 is perpendicular to the plane containing the opening side of the housing 1, and the first edge 3121 is parallel to the plane containing the opening side of the housing 1. A first hinge point A and a second hinge point B are disposed on the first hinge plate 312 for rotatable connection with the link assembly 33. The acute angle between the extension of the line connecting the first hinge point A and the second hinge point B and the first edge 3121 is 44° to 46°. This increases the force-bearing area of ​​the fixed hinge member 31 in the left-right direction, thereby increasing the overall force-bearing area of ​​the fixed hinge member 31. This makes the weight of the door 2 borne by the fixed hinge member 31 more dispersed, improving the overall strength of the hinge device 3, preventing the fixed hinge member 31 from sagging, and thus preventing the door 2 from sagging, thereby improving the stability of the hinge device 3.

[0050] In some embodiments, the acute angle between the extension of the line connecting the first hinge point A and the second hinge point B and the first edge 3121 is 45.3°.

[0051] When the refrigeration device 100 is a vertical refrigeration device 100 and the door 2 is a left-right opening door 2, the direction from the cabinet 1 to the door 2 is called "front", and the opposite direction is called "rear". "Rear" refers to the direction from the door 2 to the cabinet 1. At this time, the opening side of the cabinet 1 is the front side of the cabinet 1, which is vertically arranged. The first hinge plate 312 is perpendicular to the opening side of the cabinet 1, that is, the first hinge plate 312 is horizontally arranged. In a specific embodiment, the fixed hinge component 31 further includes a first fixing plate 311 for fixing to the cabinet 1. The first fixing plate 311 is connected to the first hinge plate 312. The first fixing plate 311 is parallel to the plane where the opening side of the cabinet 1 is located and is used to fix to the front side of the cabinet 1. At this time, the first fixing plate 311 is perpendicular to the first hinge plate 312. The aforementioned first edge 3121 can also be understood as the connecting edge between the first fixing plate 311 and the first hinge plate 312. Of course, this is not the only option. In other embodiments, the first fixing plate 311 may also be configured to be parallel to the first hinge plate 312.

[0052] In the embodiment where the first fixed plate 311 is perpendicular to the first hinge plate 312, two first hinge plates 312 are provided. The two first hinge plates 312 are respectively connected to the upper and lower sides of the first fixed plate 311. Each of the two first hinge plates 312 is provided with a first hinge point A and a second hinge point B, with the two first hinge points A and B positioned opposite each other. Alternatively, the line connecting the two first hinge points A is perpendicular to the first hinge plate 312, and the line connecting the two second hinge points B is perpendicular to the first hinge plate 312. The fixed hinge member 31 is provided with two first hinge plates 312 for connecting to the connecting rod assembly 33, resulting in a strong connection between the two. Simultaneously, the connecting rod assembly 33 is at least partially housed and supported within the fixed hinge member 31, thereby improving the overall strength of the hinge device 3.

[0053] In some embodiments, the first hinge plate 312 has a second edge 3122 near the rotating end, the distance between the second hinge point B and the first edge 3121 is less than the distance between the first hinge point A and the first edge 3121, and the distance between the second hinge point B and the second edge 3122 is greater than the distance between the first hinge point A and the second edge 3122.

[0054] The distance between the second hinge point B and the first edge 3121 is less than the distance between the first hinge point A and the first edge 3121, and the distance between the second hinge point B and the second edge 3122 is greater than the distance between the first hinge point A and the second edge 3122. That is, the positional relationship between the first hinge point A and the second hinge point B on the first hinge plate 312 is as follows: the direction from the second hinge point B to the first hinge point A is away from the housing 1 and close to the fixed rotating end P1.

[0055] In some optional embodiments, the second hinge plate 322 has a third edge 3221 away from the fixed hinge member 31. When the connecting rod assembly 33 is in the folded state, the third edge 3221 is parallel to the first edge 3121. The angle between the extension of the line connecting the third hinge point C and the fourth hinge point D and the third edge 3221 is 8 to 15°.

[0056] In some optional embodiments, the angle between the extension of the line connecting the third hinge point C and the fourth hinge point D and the third edge 3221 is 10.7°.

[0057] In one specific implementation, such as Figure 2In the hinge device 3, the second hinge plate 322 has a fourth edge 3222 located at the rotating end. The distance between the third hinge point C and the third edge 3221 is less than the distance between the fourth hinge point D and the third edge 3221. The distance between the third hinge point C and the fourth edge 3222 is less than the distance between the fourth hinge point D and the fourth edge 3222. That is, when the hinge device 3 is in the folded state, the direction of the line connecting the third hinge point C and the fourth hinge point D is approximately the same as the direction of the line connecting the first hinge point A and the second hinge point B, but the deflection angle is different. Compared to existing hinge devices 3 where the line connecting the third hinge point C and the fourth hinge point D is parallel to the third edge 3221, this application sets the angle between the extension of the line connecting the third hinge point C and the fourth hinge point D and the third edge 3221 to 8-15°. This allows the linkage assembly 33 to drive the movable hinge member 32 to have a larger forward movement and an inward movement towards the opening end when the hinge device 3 is unfolded. In other words, it drives the door 2 to have a larger forward movement away from the cabinet 1 and a larger inward movement away from the cabinet 200 located at the rotating end, thereby preventing the door 2 from colliding with the cabinet 200 when it is opened.

[0058] The angle between the extension of the line connecting the third hinge point C and the fourth hinge point D and the third edge 3221 can be selected according to the required movement trajectory of the door body 2. The larger the angle between the extension of the line connecting the third hinge point C and the fourth hinge point D and the third edge 3221, the greater the forward and inward movement of the door body 2 during the opening process.

[0059] In some embodiments, the thickness of the hinge device 3 is 15-17 mm in the direction perpendicular to the first hinge plate 312, that is, when the link assembly 33 is in the folded state, the overall thickness of the hinge device 3 is 15-17 mm.

[0060] In some embodiments, when the linkage assembly 33 is in the folded state, the overall thickness of the hinge device 3 is 15.8 mm.

[0061] like Figure 2 , 5 In sections 7 and 8, regarding the positional relationship and related movement relationship between the fixed hinge 31, the movable hinge 32, and the link assembly 33, the end of the second link 332 away from the second hinge point B and the end of the fourth link 334 away from the fourth hinge point D are hinged at the fifth hinge point E; the second link 332 has a sixth hinge point F located between the second hinge point B and the fifth hinge point E, and the end of the third link 333 away from the third hinge point C is hinged at the sixth hinge point F; the third link 333 has a seventh hinge point G located between the third hinge point C and the sixth hinge point F, and the end of the first link 331 away from the first hinge point A is hinged at the seventh hinge point G.

[0062] The linkage assembly 33, the fixed hinge component 31, and the movable hinge component 32 form two quadrilaterals: quadrilateral ABFG, formed by the lines AB connecting the first hinge point A and the second hinge point B, BF connecting the second hinge point B and the sixth hinge point F, FG connecting the sixth hinge point F and the seventh hinge point G, and GA connecting the seventh hinge point G and the first hinge point A; and quadrilateral CDEF, formed by the lines CF connecting the third hinge point C and the sixth hinge point F, FE connecting the sixth hinge point F and the fifth hinge point E, ED connecting the fifth hinge point E and the fourth hinge point D, and DC connecting the fourth hinge point D and the third hinge point C. During the rotation and opening of the door 2, the deformation of these two quadrilaterals drives the door 2 to move along a preset trajectory.

[0063] During the transition from the closed to the open state, the quadrilateral ABFG formed by connecting the first hinge point A, the second hinge point B, the sixth hinge point F, and the seventh hinge point G is always a convex quadrilateral, and the quadrilateral CDEF formed by connecting the third hinge point C, the sixth hinge point F, the fifth hinge point E, and the fourth hinge point D is always a convex quadrilateral. This avoids dead spots during the opening and closing of the door 2 and improves the smoothness of opening and closing the door 2. It should be noted that the aforementioned dead spot refers to the point where the interior angle of the quadrilateral ABFG is located when the angle is 180°, corresponding to the transformation of the quadrilateral ABFG into a triangle during the transition from the closed to the open state.

[0064] In the quadrilateral ABFG formed by connecting the first hinge point A, the second hinge point B, the sixth hinge point F, and the seventh hinge point G, the line AG connecting the first hinge point A and the seventh hinge point G is the longest, which allows the door 2 to move forward more when it rotates open, thereby further avoiding interference between the door 2 and the cabinet 200 during the rotation process.

[0065] In the quadrilateral ABFG formed by connecting the first hinge point A, the second hinge point B, the sixth hinge point F, and the seventh hinge point G, the sum of the line AB connecting the first hinge point A and the second hinge point B and the line AG connecting the first hinge point A and the seventh hinge point G is greater than the sum of the line BF connecting the second hinge point B and the sixth hinge point F and the line FG connecting the sixth hinge point F and the seventh hinge point G. On the one hand, this reduces the volume of the linkage assembly 33 in the folded state, thereby reducing the distance between the door 2 and the housing 1 when closed, and improving the sealing performance of the door 2. On the other hand, it is more conducive to allowing the door 2 to have more lateral movement in the left-right direction and towards the front when it rotates open, increasing the opening angle of the door 2 and preventing the door 2 from affecting the pulling out of drawers / shelves, etc., inside the housing 1.

[0066] When the movable hinge 32 is in the closed state, in the quadrilateral ABFG formed by connecting the first hinge point A, the second hinge point B, the sixth hinge point F, and the seventh hinge point G, the interior angles B and G corresponding to the second hinge point B and the seventh hinge point G are obtuse angles, while the interior angles A and F corresponding to the first hinge point A and the sixth hinge point F are acute angles. This reduces the volume of the linkage assembly 33 in the folded state, thereby reducing the distance between the door body 2 and the housing 1 when in the closed state and improving the sealing performance of the door body 2.

[0067] When the movable hinge 32 is in the closed state, the line connecting the second hinge point B and the sixth hinge point F extends obliquely away from the first edge in the direction from the second hinge point B towards the sixth hinge point F. In the initial stage of rotating the door 2 from the closed state to open, that is, when the door 2 rotates open from the closed state to the first opening angle, compared to the translational amount in other horizontal directions, the forward movement of the door 2 is larger, while the rotation angle is smaller, which is beneficial for the smooth opening of the door 2.

[0068] When door 2 rotates open from the closed state to the first opening angle, the translation of door 2 is mainly driven by the unfolding of quadrilateral ABFG formed by connecting the first hinge point A, the second hinge point B, the sixth hinge point F, and the seventh hinge point G. That is, when door 2 rotates open from the closed state to the first opening angle, the unfolding range of quadrilateral ABFG formed by connecting the first hinge point A, the second hinge point B, the sixth hinge point F, and the seventh hinge point G is greater than the unfolding range of quadrilateral CDEF formed by connecting the third hinge point C, the sixth hinge point F, the fifth hinge point E, and the fourth hinge point D. The aforementioned first opening angle is approximately 10–15°, but is not limited to this.

[0069] As shown in the figure, during the process of door 2 rotating from 90° to its maximum opening angle (118°), the translation of door 2 is mainly driven by the unfolding of quadrilateral CDEF formed by connecting the four points C (third hinge point), F (sixth hinge point), E (fifth hinge point), and D (fourth hinge point). That is, during the process of door 2 rotating from 90° to its maximum opening angle, the unfolding range of quadrilateral CDEF formed by connecting the four points C (third hinge point), F (sixth hinge point), E (fifth hinge point), and D (fourth hinge point) is greater than the unfolding range of quadrilateral ABFG formed by connecting the four points A (first hinge point), B (second hinge point), F (sixth hinge point), and G (seventh hinge point).

[0070] In some embodiments, when the door is opened to 90°, the movable hinge 32 protrudes 6 mm from the fixed rotating end P1 of the fixed hinge 31 in the left-right direction.

[0071] When the movable hinge 32 is in the closed and open states, 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. This ensures that the quadrilateral ABFG formed by connecting the first hinge point A, the second hinge point B, the sixth hinge point F, and the seventh hinge point G, and the quadrilateral CDEF formed by connecting the third hinge point C, the sixth hinge point F, the fifth hinge point E, and the fourth hinge point D, do not intersect, thus preventing interference and improving the smoothness of opening and closing the door 2.

[0072] In quadrilateral CDEF formed by connecting the third hinge point C, the sixth hinge point F, the fifth hinge point E, and the fourth hinge point D, the sum of the line EF connecting the sixth hinge point F and the fifth hinge point E and the line ED connecting the fifth hinge point E and the fourth hinge point D is greater than the sum of the line CF connecting the third hinge point C and the sixth hinge point F and the line CD connecting the fourth hinge point D and the third hinge point C. This allows for a larger opening angle, increasing the maximum opening angle and the degree of opening of the door 2, making it easier for users to retrieve and place items.

[0073] When the movable hinge 32 is in the closed state, in the quadrilateral CDEF formed by the lines connecting the third hinge point C, the sixth hinge point F, the fifth hinge point E, and the fourth hinge point D, the interior angles corresponding to the sixth hinge point F and the fourth hinge point D are obtuse angles, while the interior angles corresponding to the third hinge point C and the fifth hinge point E are acute angles. When the movable hinge 32 is in the closed state, the two quadrilaterals formed by the connecting rod assembly 33, the fixed hinge 31, and the movable hinge 32 fold and flatten in the front-back direction, which reduces the volume of the connecting rod assembly 33 in the folded state, thereby reducing the distance between the door body 2 and the housing 1 when in the closed state and improving the sealing performance of the door body 2.

[0074] In some embodiments, when the link assembly 33 is in the folded state in the direction perpendicular to the first edge 3121 and parallel to the first hinge plate 312, i.e. in the front-rear direction, the thickness of the hinge device 3 is 43 to 48 mm.

[0075] In some embodiments, when the link assembly 33 is in the folded state in the front-rear direction, the thickness of the hinge device 3 is 47 mm.

[0076] When door 2 is closed, in the left-right direction, with hinge device 3 as the dividing line, the direction opposite to where door 2 is not fitted with hinge device 3 is the inner side, and the opposite direction is the outer side. When the movable hinge 32 rotates to its maximum angle relative to the fixed hinge 31, that is, when door 2 is opened to its maximum angle relative to cabinet 1, the distance between the second hinge point B and the fourth hinge point D is proportional to the amount of outward movement of door 2. As shown in the figure, when door 2 is opened to its maximum angle, the distance between the second hinge point B and the fourth hinge point D is 109.59 mm. In the left-right direction, the distance between the nearest point of door 2 to cabinet 1 and the fixed rotating end P1 after opening is 22.84 mm. This large amount of movement allows for a larger opening angle of door 2, thereby preventing door 2 from colliding with cabinet 200 and also preventing door 2 from affecting the pulling out of drawers / shelves, etc., inside cabinet 1.

[0077] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0078] The detailed descriptions listed above are merely specific descriptions of feasible implementation methods of this application and are not intended to limit the scope of protection of this application. All equivalent implementation methods or modifications made without departing from the spirit of the art of this application should be included within the scope of protection of this application.

Claims

1. A hinge device (3), characterized in that, The device includes a fixed hinge (31) for fixing to the box body (1), a movable hinge (32) for fixing to the door body (2), a linkage assembly (33) connecting the movable hinge (32) to the fixed hinge (31), and a door closer (4) disposed on the movable hinge (32). The linkage assembly (33) has a folded state and an unfolded state. The door closer (4) includes a fixed block (43) and an elastic member with one end abutting against the fixed block (43). The fixed block (43) is fixed to the movable hinge (32). The other end of the elastic member moves as the linkage assembly (33) switches between the folded state and the unfolded state. The elastic member has the original shape of the linkage assembly (33) in the folded state and the deformed state of the linkage assembly (33) in the unfolded state, so that the door closer (4) has the effect of keeping the linkage assembly (33) in the folded state.

2. The hinge device (3) according to claim 1, characterized in that, The fixed hinge component (31) is provided with a first hinge point (A) and a second hinge point (B), and the movable hinge component (32) is provided with a third hinge point (C) and a fourth hinge point (D). The hinge device (3) has a rotating end; the fourth hinge point (D) is located on the side away from the rotating end of the third hinge point (C); the fourth hinge point (D) is provided with a cam (3341) that cooperates with the door closer (4).

3. The hinge device (3) according to claim 2, characterized in that, The linkage assembly (33) includes a first link (331) hinged to a first hinge point (A), a second link (332) hinged to a second hinge point (B), a third link (333) hinged to a third hinge point (C), and a fourth link (334) hinged to a fourth hinge point (D). The first link (331), the second link (332), the third link (333), and the fourth link (334) are hinged to each other. The cam (3341) and the fourth link (334) are integrally formed. During the process of the linkage assembly (33) switching from the folded state to the unfolded state, the cam (3341) pushes the elastic element to compress and deform.

4. The hinge device (3) according to claim 1, characterized in that, The fixed hinge member (31) includes a first hinge plate (312) for connecting the link assembly (33). The first hinge plate (312) has a first edge (3121) away from the movable hinge member (32). The first hinge plate (312) is perpendicular to the plane of the opening side of the housing (1), and the first edge (3121) is parallel to the plane of the opening side of the housing (1). The first hinge plate (312) is provided with a first hinge point (A) and a second hinge point (B) for rotatably connecting with the link assembly (33). The acute angle between the extension of the line connecting the first hinge point (A) and the second hinge point (B) and the first edge (3121) is 44 to 46°.

5. The hinge device (3) according to claim 4, characterized in that, The hinge device (3) has a rotating end; the first hinge plate (312) has a second edge (3122) located at the rotating end, the distance between the second hinge point (B) and the first edge (3121) is less than the distance between the first hinge point (A) and the first edge (3121), and the distance between the second hinge point (B) and the second edge (3122) is greater than the distance between the first hinge point (A) and the second edge (3122).

6. The hinge device (3) according to claim 1, characterized in that, The movable hinge (32) includes a second hinge plate (322) for connecting the link assembly (33). The second hinge plate (322) has a third edge (3221) away from the fixed hinge (31). When the link assembly (33) is in the folded state, the third edge (3221) is parallel to the plane of the opening side of the housing (1). The second hinge plate (322) is provided with a third hinge point (C) and a fourth hinge point (D) for rotatably connecting with the link assembly (33). The angle between the extension of the line connecting the third hinge point (C) and the fourth hinge point (D) and the third edge (3221) is 8 to 15°.

7. The hinge device (3) according to claim 6, characterized in that, The hinge device (3) has a rotating end; the second hinge plate (322) has a fourth edge (3222) located at the rotating end, the distance between the third hinge point (C) and the third edge (3221) is less than the distance between the fourth hinge point (D) and the third edge (3221), and the distance between the third hinge point (C) and the fourth edge (3222) is less than the distance between the fourth hinge point (D) and the fourth edge (3222).

8. The hinge device (3) according to claim 1, characterized in that, In the height direction, the thickness of the hinge device (3) is 15-17 mm.

9. The hinge device (3) according to any one of claims 1 to 8, characterized in that, When the connecting rod assembly (33) is in the folded state in the plane direction perpendicular to the opening side of the box (1), the thickness of the hinge device (3) is 43-48 mm.

10. A refrigeration device (100), characterized in that, It includes a housing (1), a door (2) for opening or closing the housing (1), and a hinge device (3) as described in any one of claims 1 to 9 for connecting the housing (1) and the door (2).

Images