Hinge device and refrigeration equipment

Abstract

The present application provides a hinge device and a refrigeration device, wherein the hinge device comprises: a fixed hinge part, which is fixed to a box body; a connecting rod assembly, which is used to connect the fixed hinge part and a door body, wherein the connecting rod assembly comprises a first connecting rod, one end of which is slidably connected to the fixed hinge part and the other end of which is used to be rotatably connected to the door body; and a power-assisting mechanism, wherein the power-assisting mechanism has a connecting end connected to the fixed hinge part and a force-applying end opposite to the connecting end, wherein the force-applying end is used to act on the first connecting rod. When the connecting rod assembly switches between a folded state and an unfolded state, the first connecting rod drives the force-applying end to move, thereby assisting the door opening or closing through the power-assisting mechanism, thereby improving the smoothness of opening and closing the door body.

Description

Technical Field

[0001] The present application relates to the technical field of refrigeration equipment, and in particular to a hinge device and a refrigeration equipment having 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 home decoration has become increasingly prominent. It has become popular to embed refrigeration equipment (such as refrigerators) into external environmental parts, such as cabinets, walls, etc., that is, to form embedded refrigeration equipment to achieve a unified home decoration style. However, the door body of traditional refrigeration equipment is set to rotate around a fixed axis to open / close. During the rotation of the door body, the pivot end of the door body will protrude toward the external environmental parts, causing interference with the external environmental parts, affecting the opening of the door body and affecting the use of the refrigeration equipment.

[0003] Some existing refrigeration equipment uses a hinge device with a connecting rod assembly to movably 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.

[0004] On the basis of adopting a hinge device with a connecting rod assembly, since the refrigeration equipment is cooled internally, if the door body is not closed tightly, it is easy to cause the cold air inside the refrigeration equipment to leak, causing the food in the refrigeration equipment to rot, and also waste a lot of electricity. Therefore, it is necessary to set a door closer between the door body and the box body.

[0005] The commonly used door closer structures at this stage are such as the elastic booster device in the Chinese invention patent application No. CN103924854A, and the structure and boosting effect are relatively stable. However, as shown in the Chinese invention patent application No. CN103924854A, the current limit grooves that cooperate with the elastic booster are all set as long straight grooves extending along the deformation direction of the elastic booster. The setting of the long straight grooves makes the general boosting door closing angle smaller. At the same time, before the elastic booster realizes the boosting door closing stage, the user needs to use a large force to compress the spring in the elastic booster, and the stroke of the user's compression of the spring is consistent with the stroke of the spring when the boosting door closing is finally realized, which is inconvenient for the user to operate, and may even cause the door body to rebound and open because the user does not compress the spring in place, affecting the user's experience. Utility Model Content

[0006] In order to achieve the above-mentioned object, the present application provides a hinge device, which includes a hinge device, including:

[0007] A fixed hinge part, used for fixing to the box body;

[0008] A connecting rod assembly, used to connect the fixed hinge and the door body, the connecting rod assembly comprising a first connecting rod with one end slidably connected to the fixed hinge and the other end rotatably connected to the door body;

[0009] The power-assisting mechanism comprises a connection end connected to the fixed hinge and a force-applying end opposite to the connection end, wherein the force-applying end is used to act on the first connecting rod.

[0010] As a further improvement of the present application, the force-applying end has a limiting shaft, the fixed hinge has a limiting groove, and when the connecting rod assembly switches between the folded state and the unfolded state, the first connecting rod drives the limiting shaft to move along the limiting groove.

[0011] As a further improvement of the present application, the limiting groove has a relative starting position and a terminal position, and when the connecting rod assembly is in a folded state, the limiting shaft is located at the starting position;

[0012] The sliding end of the first connecting rod connected to the fixed hinge has an equivalent rotation center, and the first connecting rod is connected to a protruding block that acts on the force-applying end. When the connecting rod assembly is in a folded state, the center of curvature of the abutment surface of the protruding block and the force-applying end is located on the side of the first connecting line between the axis of the limit shaft and the equivalent rotation center of the first connecting rod away from the terminal position.

[0013] As a further improvement of the present application, when the connecting rod assembly switches from the folded state to the unfolded state, the first connecting rod drives the limit shaft to move toward the terminal position first, and when the limit shaft is located at the terminal position, the center of curvature of the abutting surface of the protruding block abutting against the force-applying end is located on a first connecting line between the axis of the limit shaft and the equivalent rotation center of the first connecting rod;

[0014] When the limit shaft is located at the terminal position and the connecting rod assembly continues to switch to the unfolded state, the limit shaft moves toward the starting position.

[0015] As a further improvement of the present application, the sliding end of the first connecting rod connected to the fixed hinge has an equivalent rotation center, the first connecting rod is connected to a protruding block acting on the force-applying end, a second connecting line is provided between the center of curvature of the abutting surface of the protruding block abutting against the force-applying end and the axis of the limiting shaft, and a first connecting line is provided between the equivalent rotation center of the first connecting rod and the axis of the limiting shaft;

[0016] When the connecting rod assembly is in a folded state, the included angle between the first connecting line and the second connecting line is α1, wherein 5°≤α1≤60°.

[0017] As a further improvement of the present application, the sliding end of the first connecting rod connected to the fixed hinge has an equivalent rotation center, the first connecting rod is connected to a protruding block acting on the force-applying end, a third connecting line is provided between the center of curvature of the abutting surface of the protruding block abutting the force-applying end and the axis of the equivalent rotation center of the first connecting rod, and a first connecting line is provided between the axis of the limit shaft and the equivalent rotation center of the first connecting rod;

[0018] When the connecting rod assembly is in a folded state, an included angle α2 between the first connecting line and the third connecting line is 3°≤α2≤45°.

[0019] As a further improvement of the present application, the sliding end of the first connecting rod connected to the fixed hinge has an equivalent rotation center, the first connecting rod is connected to a protruding block acting on the force-applying end, a second connecting line is provided between the center of curvature of the abutting surface of the protruding block abutting the force-applying end and the axis of the limiting shaft, a third connecting line is provided between the center of curvature of the abutting surface of the protruding block abutting the force-applying end and the axis of the equivalent rotation center of the first connecting rod, and a first connecting line is provided between the equivalent rotation center of the first connecting rod and the axis of the limiting shaft;

[0020] When the connecting rod assembly is in a folded state, the length L4 of the limiting groove is ≥ L3+L2-L1.

[0021] As a further improvement of the present application, 1mm≤L3+L2-L1≤10mm.

[0022] As a further improvement of the present application, the limiting groove has a relative starting position and a terminal position, and when the connecting rod assembly is in a folded state, the limiting shaft is located at the starting position;

[0023] The fixed hinge is also provided with a first avoidance hole which is connected with the limiting groove at the terminal position.

[0024] As a further improvement of the present application, the limiting shaft has a first shaft segment located in the limiting groove, a second shaft segment coaxial with the first shaft segment and located outside the limiting groove, the shaft diameter of the second shaft segment is larger than the shaft diameter of the first shaft segment, and the groove width of the limiting groove is smaller than the shaft diameter of the second shaft segment; the first avoidance hole is an installation hole, and the hole diameter of the installation hole is not smaller than the shaft diameter of the second shaft segment.

[0025] As a further improvement of the present application, the power assist mechanism includes:

[0026] a fixing seat located at the connecting end, the fixing seat being connected to the fixing hinge;

[0027] A driving block located at the force-applying end, wherein the limiting shaft is arranged on the driving block;

[0028] A damping rod, one end of which is connected to the fixing seat and the other end of which is connected to the driving block;

[0029] A spring is sleeved on the damping rod and is in a compressed state.

[0030] As a further improvement of the present application, the limiting groove is a straight groove, and the limiting groove extends along the deformation direction of the spring.

[0031] As a further improvement of the present application, the fixed hinge member includes a fixed plate for fixing to the box body, two connecting plates connected to opposite ends of the fixed plate, the connecting plates are perpendicular to the fixed plate, the power assist mechanism is arranged between the two connecting plates, and the limiting groove is arranged on the connecting plates;

[0032] The limiting shaft comprises a first shaft section located in the limiting groove, a second shaft section coaxial with the first shaft section and located outside the limiting groove, the shaft diameter of the second shaft section is larger than the shaft diameter of the first shaft section, the groove width of the limiting groove is smaller than the shaft diameter of the second shaft section, and the driving block is provided with a connecting groove for accommodating the first shaft section.

[0033] As a further improvement of the present application, the connecting rod assembly further includes:

[0034] A second connecting rod rotatably connected to the fixed hinge, the second connecting rod intersecting with the first connecting rod and rotatably connected at the intersection;

[0035] A third connecting rod, one end of which is rotatably connected to the door body, and the other end of which is rotatably connected to the second connecting rod.

[0036] As a further improvement of the present application, the fixed hinge is provided with a slide groove matched with the first connecting rod, the first connecting rod has a guide shaft located in the slide groove, the slide groove has a first end and a second end opposite to each other, and when the connecting rod assembly is in a folded state, the guide shaft is located at the first end;

[0037] The fixed hinge also includes a second avoidance hole at the first end which is connected to the slide groove.

[0038] As a further improvement of the present application, the hinge device also includes a movable hinge member for fixing to the door body, and one end of the connecting rod assembly for connecting to the door body is connected to the movable hinge member.

[0039] In order to achieve the above application purpose, the present application also provides a refrigeration device, including a box body, a door body for opening or closing the box body, and the above hinge device.

[0040] Compared with the prior art, the beneficial effects of the present application are: the hinge device in the present application, on the one hand, by arranging the power-assisting mechanism on the fixed hinge part, can improve the stability and reliability of the interaction force between the power-assisting mechanism and the connecting rod assembly, improve the stability of opening and closing the door, and reduce the impact on the overall volume of the refrigerator; on the other hand, when the connecting rod assembly switches between the folded state and the unfolded state, the first connecting rod drives the force-applying end to move, thereby assisting in opening or closing the door through the power-assisting mechanism, thereby improving the smoothness of opening and closing the door body. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0042] Figure 1 It is a structural schematic diagram of a refrigeration device in a specific embodiment of the present application after being embedded in a cabinet;

[0043] Figure 2 yes Figure 1 A schematic structural diagram of the hinge device in the first embodiment of the present application (the connecting rod assembly is in a folded state);

[0044] Figure 3 yes Figure 2 An exploded view of the power assist mechanism in FIG.

[0045] Figure 4 yes Figure 2 A schematic diagram of the structure of the fixed hinge member;

[0046] Figure 5 yes Figure 4 A structural schematic diagram of the fixed hinge member at another angle;

[0047] Figure 6 yes Figure 2 A schematic diagram of the structure in which the power assist mechanism and the connecting rod assembly are linked;

[0048] Figure 7 yes Figure 2 Structural diagram of the middle hinge device (the straight limit axis of the connecting rod assembly is located at the terminal position of the limit slot);

[0049] Figure 8 yes Figure 2 Schematic diagram of the structure of the hinge device in FIG. 1 (the connecting rod assembly is unfolded until the connecting rod assembly is separated from the power-assisting mechanism).

[0050] Wherein: 100, refrigeration equipment; 10, hinge device; 1, fixed hinge; 11, limit slot; A, starting position; B, terminal position; 12, first avoidance hole; 13, fixed plate; 14, connecting plate; 15, slide slot; 16, second avoidance hole; 2, connecting rod assembly; 21, first connecting rod; 211, guide shaft; 22, second connecting rod; 23, third connecting rod; 3, power assist mechanism; M, connecting end; N, force application end; 31, limit shaft; 311, first shaft section; 312, second Shaft section; 32, fixed seat; 33, driving block; 331, connecting groove; 332, bushing; 34, spring; 35, damping rod; 4, movable hinge; 5, protruding block; 20, box body; 30, door body; L1, first connecting line; L2, second connecting line; L3, third connecting line; L4, length of limiting groove; F1, first direction; F2, second direction; 200, cabinet; E, center of curvature; R, equivalent rotation center; α1, angle between L1 and L2; α2, angle between L1 and L3. DETAILED DESCRIPTION

[0051] The following will be combined with the attached Figure 1-8 The specific embodiments shown are used to describe the present application in detail, but these embodiments do not limit the present application, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all included in the protection scope of the present application.

[0052] Words expressing position and direction described in this application use the side where the door is located when the refrigerator is normally in use as "front", and the direction away from the refrigerator on the pivot side as "outside". For example, in a double-door refrigerator, the movement of one door from the pivot side away from the other door during the opening process is called outward movement, and the movement of one door from the pivot side toward the other door during the opening process is called inward movement.

[0053] The terms first, second, third, etc. in this application are only used to distinguish similar objects and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. In addition, it should be noted that, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "fixed" 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 integral connection. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0054] Unless otherwise stated, the term "plurality" means two or more.

[0055] It should be noted that, in the absence of conflict, the specific embodiments and features of the embodiments disclosed in this application can be combined with each other.

[0056] Combination Figures 1 to 8 As shown, the present application provides a hinge device 10 and a refrigeration device 100 having the hinge device 10. Specifically, the refrigeration device 100 includes a box body 20 for storing articles and a door body 30 for opening or closing the box body 20. The hinge device 10 is used to movably connect the door body 30 to the box body 20 so as to realize opening or closing the box body 20 through the door body 30. When the door body 30 is in a closed state, the door body 30 and the box body 20 are jointly enclosed to form a refrigeration space for storing articles. When the door body 30 is in an open state, it is convenient for users to store articles in or take out articles from the box body 20. Of course, it should be noted that the hinge device 10 in the present application is not limited to the above-mentioned refrigeration device 100, but can also be applied to other household products, such as cabinets, wine cabinets, wardrobes, microwave ovens, etc.

[0057] In this embodiment, the hinge device 10 is specifically described by taking the refrigeration device 100 as a built-in refrigerator for embedding in an external environment, the door body 30 is located at the front side of the box body 20, and the door body 30 is a door that rotates left and right. Figure 1 The figure only shows a partial schematic diagram of a refrigeration device 100 embedded in a cabinet 200 in a specific embodiment of the present application, wherein only the cabinet 200 located on one side is shown. It is known that in actual installation, the refrigeration device 100 is completely embedded in the cabinet 200. Of course, it is understandable that the refrigeration device 100 does not necessarily have to be embedded in the cabinet 200, but can also be embedded in other external environment parts such as the wall.

[0058] Of course, it is known that this is not limiting, and the hinge device 10 in the present application can also be applied to the non-embedded refrigeration device 100, or can also be applied to the refrigeration device 100 with the door body 30 located on the upper side of the box body 20.

[0059] Specifically, the hinge device 10 includes a fixed hinge 1 fixed to the box body 20, a connecting rod assembly 2 connected between the fixed hinge 1 and the door body 30, and a power-assisting mechanism 3 provided on the fixed hinge 1. The connecting rod assembly 2 includes a plurality of connecting rods hinged to each other, one end of the connecting rod assembly 2 is movably connected to the fixed hinge 1, and the other end is connected to the door body 30. When the connecting rod assembly 2 is in a folded state, the plurality of connecting rods are close to each other, and at this time, the door body 30 is in a closed state of closing the box body 20; when the connecting rod assembly 2 is in an unfolded state, the plurality of connecting rods are away from each other, and at this time, the door body 30 is in an open state of opening the box body 20.

[0060] During the process of the connecting rod assembly 2 switching between the folded state and the unfolded state, that is, during the process of the door body 30 rotating to open or rotating to close, the power-assisting mechanism 3 is configured to act on the first connecting rod 21 in the connecting rod assembly 2 at least in a certain stage, one end of the first connecting rod 21 is rotationally and slidably connected to the fixed hinge 1, and the other end is used to rotate and connect to the door body 30, through which the connecting rod assists the connecting rod assembly 2 to switch to the folded state or assists the connecting rod assembly 2 to switch to the unfolded state. When the power-assisting mechanism 3 can assist the connecting rod assembly 2 to switch to the folded state, the power-assisting mechanism 3 has the function of assisting the door closing; when the power-assisting mechanism 3 can assist the connecting rod assembly 2 to switch to the unfolded state, the power-assisting mechanism 3 has the function of assisting the door opening.

[0061] In the present application, the power-assisting mechanism 3 is arranged on the fixed hinge 1. After the hinge device 10 is installed between the box body 20 and the door body 30, the fixed hinge 1 is far away from the door body 30. Therefore, the possibility of the fixed hinge 1 being deformed by the gravity of the door body 30 is small, thereby improving the stability and reliability of the interaction force between the power-assisting mechanism 3 and the connecting rod assembly 2, and improving the stability of opening and closing the door; on the other hand, compared with the existing method of arranging the power-assisting mechanism 3 on the connecting rod assembly 2, the power-assisting mechanism 3 in the present application and the connecting rods in the connecting rod assembly 2 are arranged side by side in the horizontal direction, and are arranged at a position on the fixed hinge 1 that will not interfere with the connecting rod assembly 2, thereby releasing the space at the connecting rod assembly 2, so that the volume and thickness of each connecting rod in the connecting rod assembly 2 can be made smaller, thereby reducing the overall thickness of the hinge device 10, saving installation space, and greatly reducing the width of the beam on the box body 20 for installing the hinge device 10, thereby reducing the impact on the overall volume of the refrigerator.

[0062] In some embodiments, in combination Figure 2As shown, the power-assisting mechanism 3 has a connection end M connected to the fixed hinge 1, and a force-applying end N opposite to the connection end M and acting on the first connecting rod 21. The force-applying end N is provided with a limit shaft 31, and the fixed hinge 1 is provided with a limit groove 11. In the process of opening and closing the door body 30, when the power-assisting mechanism 3 is linked with the connecting rod assembly 2, the first connecting rod 21 drives the limit shaft 31 to move along the limit groove 11. That is, when the force-applying end N acts on the connecting rod assembly 2, the force-applying end N of the power-assisting mechanism 3 moves synchronously along the limit groove 11. By setting the trajectory and length of the limit groove 11, the corresponding power-assisting door closing angle / power-assisting door opening angle and the disengagement angle of the power-assisting mechanism 3 and the connecting rod assembly 2 are controlled, thereby improving the smoothness of the user's opening and closing of the door body 30.

[0063] In a specific embodiment, in combination Figure 3 As shown, the power-assisting mechanism 3 includes a fixed seat 32 located at the connection M, a driving block 33 located at the force-applying end N, and an elastic member disposed between the fixed seat 32 and the driving block 33. The fixed seat 32 is fixedly connected to the fixed hinge member 1 so that the force-applying end N can move along the limiting groove 11, the limiting shaft 31 is disposed on the driving block 33, and the limiting shaft 31 acts on the first connecting rod 21. During the movement of the limiting shaft 31 in the limiting groove 11, the elastic member is in a compressed state, so that, under the action of the elastic restoring force of the elastic member, the driving block 33 can drive the first connecting rod 21 matched with the power-assisting mechanism 3 to achieve power-assisting door closing and / or power-assisting door opening.

[0064] Specifically, the limiting shaft 31 and the driving block 33 can be integrally formed or separately formed.

[0065] It should be noted that when the limit shaft 31 is located at the end of the limit groove 11, the state of the elastic member is not particularly limited, that is, the elastic member can be set to be in a free state or in a compressed state. For example, the limit groove 11 is defined to have a relative starting position A and a terminal position B. When the connecting rod assembly 2 is in a folded state, the limit shaft 31 is located at the starting position A. When the connecting rod assembly 2 switches from the folded state to the unfolded state, the connecting rod assembly 2 drives the limit shaft 31 to move to the terminal position B first, and then returns to the starting position A. When the limit shaft 31 is located at the starting position A, the limit shaft 31 acts on the first connecting rod 21 that cooperates with the power-assisting mechanism 3. At this time, if the elastic member is set to be in a compressed state, then, under the push of the elastic restoring force of the elastic member, the folded state of the connecting rod assembly 2 can be maintained, that is, the closed state of the door body 30 can be maintained, thereby avoiding the door body 30 from being loosely closed, and achieving a certain energy-saving effect;

[0066] At the same time, when the limit shaft 31 is restored from the terminal position B to the starting position A, the power-assisting mechanism 3 is disengaged from the connecting rod assembly 2, and the limit shaft 31 stays at the starting position A. At this time, if the elastic member is set to be in a compressed state, the elastic restoring force of the elastic member will act on the limit shaft 31, so that the limit shaft 31 is tightly against the starting position A, thereby preventing the limit shaft 31 from shaking in the limit groove 11, improving the limiting effect of the starting position A on the limit shaft 31, and facilitating the stability of the linkage between the power-assisting mechanism 3 and the connecting rod assembly 2.

[0067] In a specific embodiment, the elastic member is a spring 34, and the boost mechanism 3 further includes a damping rod 35, one end of the damping rod 35 is connected to the fixing seat 32, and the other end is connected to the driving block 33, the spring 34 is sleeved on the damping rod 35, and one end of the spring 34 abuts against the fixing seat 32, and the other end abuts against the driving block 33. The stability of the elastic deformation of the elastic member can be improved, and the elastic member will not produce skew except in the direction of elastic deformation, thereby improving the stability of the force of the boost mechanism 3. Of course, it is not limited to this.

[0068] In some embodiments, the first connecting rod 21 is connected to a protruding block 5 that acts on the force-applying end N, and the protruding block 5 and the limiting shaft 31 abut against each other to realize the linkage between the power-assisting mechanism 3 and the connecting rod assembly 2.

[0069] Specifically, the sliding end of the first connecting rod 21 connected to the fixed hinge 1 has an equivalent rotation center R, and the equivalent rotation center R is the curvature center of the motion trajectory of the sliding end during the interaction with the force-applying end N. A first connecting line L1 is defined between the equivalent rotation center R and the axis of the limiting axis 31. At the same time, a second connecting line L2 is defined between the axis of the limiting axis 31 and the curvature center E of the abutting surface of the protruding block 5 and the force-applying end N, and a third connecting line L3 is defined between the curvature center E of the abutting surface of the protruding block 5 and the force-applying end N and the equivalent rotation center R.

[0070] It should be noted that the user's door-opening force drives the movement of the first connecting rod 21. The first connecting rod 21 performs translational motion and rotational motion at the same time, and its equivalent rotation center R can be approximately solved. At this time, the equivalent rotation center R is located outside the first connecting rod 21. Compared with the equivalent rotation center R being located on the first connecting rod 21, the protruding block 5 can achieve a larger centrifugal motion, so that the contact motion angle between the protruding block 5 and the limit shaft 31 is very small. In most stages, the entire hinge system is not interfered by the spring, which greatly reduces the friction of the system and improves the hand feel experience of the non-self-closing door section. In addition, since the equivalent rotation center R is located outside the entity, the spring can obtain a large force arm, making the self-closing door action section short and powerful.

[0071] Since the contact time between the protruding block 5 and the limiting shaft 31 is short and the displacement of the first connecting rod 21 is small, during the matching process between the protruding block 5 and the limiting shaft 31 , the equivalent rotation center R is considered to be unchanged.

[0072] It is known that when the center of curvature E of the contact surface of the protruding block 5 and the force-applying end N is located on the first connecting line L1, the protruding block 5 is at a dead point. When the center of curvature E of the contact surface of the protruding block 5 and the force-applying end N is located on the side of the first connecting line L1 toward the terminal position B, if there is no external force, under the thrust of the power-assisting mechanism 3, the limit shaft 31 has a tendency to move toward the starting position A, which will make the protruding block 5 have a tendency to move toward the direction of the door body 30, and can drive the connecting rod assembly 2 to switch to the expanded state, and can realize power-assisted door opening when opening the door. On the contrary, when closing the door, a certain force will be applied to prevent the door from closing. When the center of curvature E of the contact surface between the protruding block 5 and the force-applying end N is located on the side of the first connecting line L1 away from the terminal position B, if there is no external force, under the action of the thrust of the power-assisting mechanism 3, the limit shaft 31 has a tendency to move away from the starting position A, that is, the protruding block 5 has a tendency to move away from the door body 30, and can drive the connecting rod assembly 2 to switch to a closed state, that is, it can achieve power-assisted door closing when closing the door, and correspondingly, when opening the door, a certain force will be applied to prevent the door from opening.

[0073] In a specific embodiment, the abutting surface between the protruding block 5 and the force end N is in an arc shape, that is, the abutting surface between the limit shaft 31 and the protruding block 5 is in an arc shape. It can improve the smoothness of the cooperation between the protruding block 5 and the limit shaft 31, thereby further improving the smoothness of opening and closing the door. It is known that at this time, the center of curvature E of the abutting surface between the protruding block 5 and the force end N mentioned above refers to the center of the circle where the abutting surface is located. During the whole process of the protruding block 5 and the limit shaft 31 abutting, the center of curvature E of the abutting surface between the protruding block 5 and the force end N is the center of the circle, that is, the center of curvature E of the abutting surface between the protruding block 5 and the force end N remains unchanged. Of course, this is not limited to this. In other embodiments, the abutment surface between the limit shaft 31 and the protruding block 5 can also be a non-circular arc. At this time, during the entire process of the abutment between the protruding block 5 and the limit shaft 31, the abutment surface between the protruding block 5 and the force-applying end N will change, and the curvature center E of the corresponding abutment surface will also be different.

[0074] It is known that in the embodiment where the contact surface 51 of the protruding block 5 and the force application end N is in an arc shape, the second connecting line L2 refers to the connecting line connecting the axis of the limiting shaft 31 and the center of the circle where the contact surface is located.

[0075] Combination Figure 6-Figure 8As shown, when the connecting rod assembly 2 is in the folded state, the limit axis 31 is located at the starting position A, and the curvature center E of the contact surface of the protruding block 5 and the force-applying end N is located on the side of the first connecting line L1 away from the terminal position B. That is, during the door closing process, before the power-assisted door closing stage, the power-assisted mechanism 3 will apply a force to prevent the door from closing, and during the door opening process, the power-assisted mechanism 3 will apply a certain force to assist the door opening, thereby achieving power-assisted door opening.

[0076] When the connecting rod assembly 2 switches from the folded state to the unfolded state, the first connecting rod 21 drives the limit shaft 31 to move to the terminal position B first, and then restores to the starting position A; when the limit shaft 31 is located at the terminal position B, the curvature center E of the abutting surface of the protruding block 5 and the force-applying end N is located on the first connecting line L1.

[0077] In some embodiments, the limiting groove 11 is a linear groove, and the limiting groove 11 extends along the expansion and contraction direction of the elastic member, which can improve the smoothness of the movement of the limiting shaft 31 along the limiting groove 11, thereby further improving the smoothness of opening and closing the door body 30.

[0078] When the connecting rod assembly 2 is unfolded from the folded state, that is, when the door body 30 rotates and opens from the closed state, the protruding block 5 abuts against the force-applying end N, that is, the protruding block 5 abuts against the limiting shaft 31 and drives the limiting shaft 31 to move from the starting position A to the terminal position B along the limiting groove 11, and the force-applying end N moves toward the connecting end M. During this process, the distance between the limiting shaft 31 and the connecting end M is continuously reduced, and the elastic member is continuously compressed. When the limiting shaft 31 is located at the terminal position B, the elastic member reaches the maximum compression stroke. It can be understood that at this stage, the power-assisting mechanism 3 will provide a certain force to prevent the door from opening. When the limiting shaft 31 is located at the terminal position B, as the door body 30 continues to rotate and open, driven by the elastic restoring force of the elastic member, the limiting shaft 31 begins to move from the terminal position B to the starting position A. While the limiting shaft 31 moves, it will push the protruding block 5 to move away from the box body 20, that is, to achieve the effect of assisting the door opening. When the limiting shaft 31 is restored to the starting position A and continues to rotate to open the door body 30 , the power assist mechanism 3 is disengaged from the connecting rod assembly 2 .

[0079] Correspondingly, when the connecting rod assembly 2 gradually folds from the unfolded state until the protruding block 5 contacts the force-applying end N, that is, when the door body 30 rotates closed until the protruding block 5 contacts the force-applying end N and continues to rotate closed, the limit shaft 31 moves along the limit groove 11 toward the terminal position B, and the distance between the limit shaft 31 and the connecting end M continues to decrease, and the elastic member is continuously compressed. When the limit shaft 31 is located at the terminal position B, the elastic member reaches the maximum compression stroke. At this stage, the power assist mechanism 3 applies a certain force to the connecting rod assembly 2 to prevent the door from closing. When the limit shaft 31 is located at the terminal position B, as the door body 30 continues to rotate and close, driven by the elastic restoring force of the elastic member, the limit shaft 31 tends to move toward the starting position A, driving the protruding block 5 to move toward the direction of the box body 20, and driving the connecting rod assembly 2 to switch to the folded state. When the limit shaft 31 is located at the starting position A, the connecting rod assembly 2 is in the folded state, and the door body 30 is in the closed state, thereby achieving assisted door closing.

[0080] In some embodiments, in combination Figure 6 As shown, when the connecting rod assembly 2 is in the folded state, that is, when the door body 30 is in the closed state, the angle between the first connecting line L1 and the second connecting line L2 is α1. It can be known that the size of the angle α1 can control the force arm of the power-assisted door closing force applied by the power-assisted mechanism 3 to the connecting rod assembly 2. The larger the angle α1, the larger the force arm of the power-assisted door closing force applied by the corresponding power-assisted mechanism 3 to the connecting rod assembly 2, and a larger power-assisted door closing torque can be obtained to achieve large-load power-assisted door closing. Preferably, 5°≤α1≤60°.

[0081] In some embodiments, in combination Figure 6 As shown, when the connecting rod assembly 2 is in the folded state, that is, when the door body 30 is in the closed state, the angle between the third connecting line L3 and the first connecting line L1 is α2. It can be seen that the size of the angle α2 can control the power-assisted door closing angle of the power-assisted mechanism 3. The larger the angle α2, the larger the corresponding power-assisted door closing angle. Preferably, 3°≤α2≤45°.

[0082] In some embodiments, in combination Figure 6As shown, when the connecting rod assembly 2 is in the folded state, that is, when the door body 30 is in the closed state, the length L4 of the limit groove 11 is ≥ L3 + L2-L1. The triangle formed by the three straight lines L1, L2, and L3 is an obtuse triangle, and L3 + L2-L1 is the spring compression amount. The length of the limit groove 11 should not be less than the value of L3 + L2-L1. It can be seen that the spring compression amount is very small, which can improve the reliability and stability of the spring. The length of L3 is greater than the length of L2. Among them, 1mm ≤ L3 + L2-L1 ≤ 10mm.

[0083] In some embodiments, the limiting shaft 31 has a first shaft section 311 located in the limiting groove 11, and the shaft diameter of the first shaft section 311 is smaller than the groove width of the limiting groove 11. When the power-assisting mechanism 3 and the connecting rod assembly 2 are linked to each other, there is a gap between the first shaft section 311 and the groove wall of the limiting groove 11. Therefore, in the stage where the power-assisting mechanism 3 and the connecting rod assembly 2 are linked to each other, there is no contact between the limiting shaft 31 and the groove wall of the limiting groove 11, and the force of the power-assisting mechanism 3 is completely applied to the connecting rod assembly 2, thereby improving the power-assisting effect of the power-assisting mechanism 3. It is known that only when the limiting shaft 31 is located at the starting position A and the connecting rod assembly 2 is separated from the power-assisting mechanism 3, the first shaft section 311 will be pressed against the groove wall of the limiting groove 11 at the starting position A under the action of the elastic restoring force of the elastic member, that is, it will contact the groove wall of the limiting groove 11.

[0084] The fixed hinge 1 is also provided with a first avoidance hole 12 which is connected to the limit groove 11 at the terminal position B, so that after the limit shaft 31 moves from the starting position A to the terminal position B, the limit shaft 31 will not hit the fixed hinge 1, thereby avoiding noise or damage to the limit shaft 31.

[0085] In a specific embodiment, the limiting shaft 31 further includes a second shaft section 312 coaxial with the first shaft section 311 and located outside the limiting groove 11, the shaft diameter of the second shaft section 312 is larger than the shaft diameter of the first shaft section 311, and the groove width of the limiting groove 11 is smaller than the shaft diameter of the second shaft section 312; the first avoidance hole 12 is a mounting hole, and the hole diameter of the mounting hole is not smaller than the shaft diameter of the second shaft section 312. Therefore, the limiting shaft 31 can be installed from the mounting hole, that is, the second shaft section 312 is passed through the mounting hole, and after the installation is completed, the limiting shaft 31 is moved to the starting position A, and under the cooperation of the second shaft section 312 and the limiting groove 11, the limiting shaft 31 can be limited to move along its axial direction, thereby improving the stability of the cooperation between the limiting shaft 31 and the limiting groove 11.

[0086] Of course, in other embodiments, the mounting hole may be additionally provided to install the limiting shaft 31 , and the mounting hole may be provided at any position of the limiting slot 11 .

[0087] Specifically, the fixed hinge component 1 includes a fixed plate 13 for fixing to the box body 20, and two connecting plates 14 connected to the opposite ends of the fixed plate 13, and the connecting plates 14 are perpendicular to the fixed plate 13, that is, the fixed hinge component 1 is a double-layer structure with a U-shaped cross-section, which can improve the strength of the hinge device 10.

[0088] The power-assisting mechanism 3 is disposed between the two connecting plates 14 , and the power-assisting mechanism 3 can be disposed in a hidden manner, thereby improving the overall appearance of the hinge device 10 .

[0089] Specifically, the two connecting plates 14 are both provided with the limiting grooves 11, the driving block 33 is a U-shaped block, the two opposite side walls of the driving block 33 are provided with connecting grooves 331 for accommodating the first shaft segment 311, the driving block 33 is further provided with a shaft sleeve 332, the second shaft segment 312 is located in the shaft sleeve 332, and the limiting shaft 31 includes the second shaft segment 312 and two first shaft segments 311 provided at opposite ends of the second shaft segment 312. That is, the limiting shaft 31 is detachably connected to the driving block 33. When installing the power-assisting mechanism 3, first place the power-assisting mechanism 3 between the two connecting plates 14, and connect the connecting end M to the two connecting plates 14; then, align the connecting groove 331 on the driving block 33 with the first avoiding hole 12, and insert the limiting shaft 31 from the outside of the fixed hinge 1 into the first avoiding hole 12 and the through hole 331, so that the second shaft segment 312 is located in the shaft sleeve 332, and the two first shaft segments 311 are respectively located in the corresponding first avoiding hole 12 and the connecting groove 331; and, at this time, because the shaft diameter of the second shaft segment 312 is larger than the groove width of the limiting groove 11, the opposite ends of the second shaft end 312 are respectively abutted on the two connecting plates 14, which can limit the axial movement of the limiting shaft 31 relative to the limiting groove 11 along its axial direction, thereby improving the stability of the cooperation between the limiting shaft 31 and the limiting groove 11.

[0090] In a specific embodiment, the connecting rod assembly 2 includes a first connecting rod 21 rotatably connected to the fixed hinge 1, and the force-applying end N is configured to act on the first connecting rod 21, that is, the protruding block 5 is connected to the first connecting rod 21. One end of the first connecting rod 21 is rotatably and slidably connected to the fixed hinge 1, and the other end is rotatably connected to the door body 30. The first connecting rod 21 performs translational motion and rotational motion during the process of opening and closing the door, and its equivalent rotation center R can be approximately solved. At this time, the equivalent rotation center R is located outside the first connecting rod 21, so the protruding block 5 can achieve greater centrifugal motion. During the entire door opening movement, the first connecting rod 21 drives the limiting shaft 31 to first squeeze the spring, and then release the spring after passing the dead point. Since a greater centrifugal motion can be performed, the contact movement angle between the protruding block 5 and the limiting shaft 31 is very small. In most stages, the entire hinge system is not interfered by the spring, which greatly reduces the friction of the system and improves the hand feel experience of the non-self-closing door section. In addition, since the equivalent rotation center R is located outside the entity, the spring can obtain a large force arm, making the self-closing door action section short and powerful.

[0091] In some embodiments, the protruding block 5 is detachably connected to the first connecting rod 21 , which can simplify the preparation of the first connecting rod 21 and improve the versatility of the hinge device 10 .

[0092] In some embodiments, the fixed hinge 1 is further provided with a slide groove 15, the first link 21 is slidably connected in the slide groove 15, the link assembly 2 also includes a second link 22 rotatably connected to the fixed hinge 1, and a third link 23 connecting the door body 30 and the second link 22, the hinge device 10 includes a rotating shaft that rotatably connects the second link 22 to the fixed hinge 1, the first link 21 and the second link 22 intersect and are rotatably connected at the intersection, the other end of the first link 21 is used to be rotatably connected to the door body 30, one end of the third link 23 is used to be rotatably connected to the door body 30, and the other end is rotatably connected to one end of the second link 22 away from the fixed hinge 1. In the process of the door body 30 rotating relative to the box body 20, the link assembly 2 moves along the slide groove 15 to make the door body 30 move according to a preset trajectory, thereby avoiding interference with external environmental parts.

[0093] In some embodiments, the hinge device 10 further includes a movable hinge 4 for fixing to the door body 30, and one end of the connecting rod assembly 2 for connecting to the door body 30 is connected to the movable hinge 4. That is, the third connecting rod 23 and the first connecting rod 21 are both rotatably connected to the movable hinge 4. The modular arrangement of the hinge device 10 is conducive to the assembly between the hinge device 10 and the door body 30, and is also conducive to further improving the strength of the hinge device 10.

[0094] The side where the end of the door body 30 in the refrigeration device 100 rotates relative to the box body 20 is defined as the pivot end side. When the door body 30 is in a closed state, the direction from the center of the door body 30 away from the box body 20 is the first direction F1, and the direction from the center of the door body 30 toward the pivot end side is the second direction F2. It can be seen that the above-mentioned definitions of the pivot end side, the first direction F1, and the second direction F2 are also applicable to the hinge device 10. Specifically, the side where the end of the movable hinge 4 in the hinge device 10 rotates relative to the fixed hinge 1 is the pivot end side. When the movable hinge 4 is in a closed state, that is, when the connecting rod assembly 2 is in a folded state, the direction from the center of the movable hinge 4 away from the fixed hinge 1 is the first direction F1, and the direction from the center of the movable hinge 4 toward the pivot end side is the second direction F2.

[0095] Specifically, the first direction F1 is the forward direction away from the box body 20 / fixed hinge 1. When the pivot end side is the left end side, the second direction F2 is the direction from right to left, and when the pivot end side is the right end side, the second direction F2 is the direction from left to right. In short, the second direction F2 is the outward direction toward the pivot end side.

[0096] In a specific embodiment, the first connecting rod 22 has a guide shaft 211 that is rotationally and slidably connected to the slide groove 15. The slide groove 15 is located on a side of the hinge point between the second connecting rod 22 and the fixed hinge 1 away from the pivot end, and the slide groove 15 has a first end and a second end opposite to each other. When the connecting rod assembly 2 is in a folded state, the guide shaft 211 is located at the first end. When the connecting rod assembly 2 is gradually unfolded from the folded state, the guide shaft 211 moves along the slide groove 15 toward the second end to drive the door body 30 to translate according to a preset trajectory.

[0097] Specifically, from the first end toward the second end, the extending direction of the slide slot 15 has directional components of the first direction F1 and the second direction F2. Therefore, when the connecting rod assembly 2 is gradually unfolded from the folded state, the movable hinge 4 moves along the first direction F1 and the second direction F2 at the same time, that is, when the door body 30 is rotated to open, the translation direction of the door body 30 has directional components of the first direction F1 and the second direction F2 at the same time. On the one hand, during the opening process of the door body 30, the door body 30 moves forward along the first direction F1 toward the direction away from the box body 20, so that the pivot end of the door body 30 located on the pivot end side gradually moves to the front side of the wall / cabinet located on the pivot end side, thereby avoiding interference with the wall / cabinet located on the pivot end side during the opening process of the door body 30, so that the door body 30 can be adapted to a variety of application scenarios, such as the application scenario of a built-in refrigerator, and at the same time, the maximum opening angle of the door body 30 can be increased; on the other hand, during the opening process of the door body 30, the door body 30 simultaneously moves outward along the second direction F2 away from the box body 20, which can increase the opening degree of the door body 30, avoid the door body 30 blocking the extraction of shelves / drawers in the box body 20, and affect the extraction of shelves / drawers in the box body 20, so as to facilitate users to check and take items in the box body 20.

[0098] In some embodiments, the fixed hinge component 1 also includes a second avoidance hole 16 at the first end connected to the slide groove 15, so that when the guide shaft 211 moves to the first end, the guide shaft 211 will not collide with the fixed hinge component 1, thereby avoiding noise and preventing damage to the guide shaft 211.

[0099] Specifically, the second avoidance hole 16 can also be set as a mounting hole of the guide shaft 211, or a mounting hole can be set at any position of the slide slot 15. In this case, the structure of the guide shaft 211 can be set with reference to the limit shaft 31. Of course, it is not limited thereto.

[0100] To summarize, the hinge device 10 in the present application, on the one hand, by arranging the power-assisting mechanism 3 on the fixed hinge part 1, can improve the stability and reliability of the interaction force between the power-assisting mechanism 3 and the connecting rod assembly 2, improve the stability of opening and closing the door, and reduce the impact on the overall volume of the refrigerator; on the other hand, by arranging the limiting groove 11 on the fixed hinge part 1 that cooperates with the power-assisting mechanism 3 so that when the force-applying end N acts on the connecting rod assembly 2, the force-applying end N of the power-assisting mechanism 3 moves synchronously along the limiting groove 11, so that the power-assisting mechanism 3 assists in opening or closing the door, thereby improving the smoothness of opening and closing the door body.

[0101] 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.

[0102] The series of detailed descriptions listed above are only specific descriptions of feasible implementation examples of the present application and are not intended to limit the scope of protection of the present application. Any equivalent implementation examples or changes that do not deviate from the technical spirit of the present application should be included in the scope of protection of the present application.

Claims

1. A hinge device (10), characterized in that: include: A fixed hinge member (1) for fixing to a box body (20); A connecting rod assembly (2) for connecting the fixed hinge (1) and the door body (30), the connecting rod assembly (2) comprising a first connecting rod (21) having one end slidably connected to the fixed hinge (1) and the other end rotatably connected to the door body (30); A power-assisting mechanism (3), the power-assisting mechanism (3) comprising a connection end (M) connected to the fixed hinge component (1), and a force-applying end (N) opposite to the connection end (M), the force-applying end (N) being used to act on the first connecting rod (21).

2. The hinge device according to claim 1, characterized in that: The force-applying end (N) has a limiting shaft (31), the fixed hinge component (1) has a limiting groove (11), and when the connecting rod assembly (2) switches between a folded state and an unfolded state, the first connecting rod (21) drives the limiting shaft (31) to move along the limiting groove (11).

3. The hinge device according to claim 2, characterized in that: The limiting groove (11) has a relative starting position (A) and an end position (B), and when the connecting rod assembly (2) is in a folded state, the limiting shaft (31) is located at the starting position (A); The sliding end of the first connecting rod (21) connected to the fixed hinge member (1) has an equivalent rotation center (R), and the first connecting rod (21) is connected to a protruding block (5) that acts on the force-applying end (N). When the connecting rod assembly (2) is in a folded state, the curvature center (E) of the abutment surface of the protruding block (5) and the force-applying end (N) is located on the side of the first connecting line (L1) between the axis of the limiting shaft (31) and the equivalent rotation center (R) of the first connecting rod (21) away from the terminal position (B).

4. The hinge device according to claim 3, characterized in that: When the connecting rod assembly (2) switches from a folded state to an unfolded state, the first connecting rod (21) drives the limiting shaft (31) to move toward the terminal position (B); when the limiting shaft (31) is located at the terminal position (B), the center of curvature (E) of the contact surface of the protruding block (5) and the force-applying end (N) is located on a first connecting line (L1) between the axis of the limiting shaft (31) and the equivalent rotation center (R) of the first connecting rod (21); When the limiting shaft (31) is located at the terminal position (B) and the connecting rod assembly (2) continues to switch to the unfolded state, the limiting shaft (31) moves toward the starting position (A).

5. The hinge device according to claim 2, characterized in that: The sliding end of the first connecting rod (21) connected to the fixed hinge member (1) has an equivalent rotation center (R), the first connecting rod (21) is connected to a protruding block (5) that acts on the force-applying end (N), a second connecting line (L2) is provided between the center of curvature (E) of the contact surface of the protruding block (5) abutting against the force-applying end (N) and the axis of the limiting shaft (31), and a first connecting line (L1) is provided between the equivalent rotation center (R) of the first connecting rod (21) and the axis of the limiting shaft (31); When the connecting rod assembly (2) is in a folded state, the included angle between the first connecting line (L1) and the second connecting line (L2) is α1, wherein 5°≤α1≤60°.

6. The hinge device according to claim 2, characterized in that: The sliding end of the first connecting rod (21) connected to the fixed hinge member (1) has an equivalent rotation center (R); the first connecting rod (21) is connected to a protruding block (5) that acts on the force-applying end (N); a third connecting line (L3) is provided between the center of curvature (E) of the contact surface of the protruding block (5) abutting against the force-applying end (N) and the axis of the equivalent rotation center (R) of the first connecting rod (21); and a first connecting line (L1) is provided between the axis of the limiting shaft (31) and the equivalent rotation center (R) of the first connecting rod (21); When the connecting rod assembly (2) is in a folded state, the included angle α2 between the first connecting line (L1) and the third connecting line (L3) is 3°≤α2≤45°.

7. The hinge device according to claim 2, characterized in that: The sliding end of the first connecting rod (21) connected to the fixed hinge member (1) has an equivalent rotation center (R); the first connecting rod (21) is connected to a protruding block (5) that acts on the force-applying end (N); a second connecting line (L2) is provided between the center of curvature (E) of the contact surface of the protruding block (5) abutting against the force-applying end (N) and the axis of the limiting shaft (31); a third connecting line (L3) is provided between the center of curvature (E) of the contact surface of the protruding block (5) abutting against the force-applying end (N) and the axis of the equivalent rotation center (R) of the first connecting rod (21); and a first connecting line (L1) is provided between the equivalent rotation center (R) of the first connecting rod (21) and the axis of the limiting shaft (31); When the connecting rod assembly (2) is in a folded state, the length L4 of the limiting groove (11) is ≥ L3+L2-L1.

8. The hinge device according to claim 7, characterized in that: 1mm≤L3+L2-L1≤10mm.

9. The hinge device according to claim 2, characterized in that: The limiting groove (11) has a relative starting position (A) and an end position (B), and when the connecting rod assembly (2) is in a folded state, the limiting shaft (31) is located at the starting position (A); The fixed hinge component (1) is also provided with a first avoidance hole (12) which is connected to the limiting groove (11) at the terminal position (B).

10. The hinge device according to claim 9, characterized in that: The limiting shaft (31) comprises a first shaft section (311) located in the limiting groove (11), and a second shaft section (312) coaxial with the first shaft section (311) and located outside the limiting groove (11); the shaft diameter of the second shaft section (312) is larger than the shaft diameter of the first shaft section (311); the groove width of the limiting groove (11) is smaller than the shaft diameter of the second shaft section (312); the first avoiding hole (12) is a mounting hole, and the hole diameter of the mounting hole is not smaller than the shaft diameter of the second shaft section (312).

11. The hinge device according to any one of claims 2 to 10, characterized in that: The power assist mechanism (3) comprises: a fixing seat (32) located at the connection end (M), the fixing seat (32) being connected to the fixed hinge member (1); A driving block (33) located at the force-applying end (N), wherein the limiting shaft (31) is arranged on the driving block (33); a damping rod (35), one end of the damping rod (35) being connected to the fixing seat (32) and the other end of the damping rod (35) being connected to the driving block (33); A spring (34), wherein the spring (34) is sleeved on the damping rod (35), and the spring (34) is in a compressed state.

12. The hinge device according to claim 11, characterized in that: The limiting groove (11) is a linear groove, and the linear groove extends along the deformation direction of the spring (34).

13. The hinge device according to claim 11, characterized in that: The fixed hinge member (1) comprises a fixed plate (13) for fixing to a box body (20), two connecting plates (14) connected to opposite ends of the fixed plate (13), the connecting plates (14) being perpendicular to the fixed plate (13), the assist mechanism (3) being arranged between the two connecting plates (14), and the limiting groove (11) being arranged on the connecting plates (14); The limiting shaft (31) comprises a first shaft section (311) located in the limiting groove (11), and a second shaft section (312) coaxial with the first shaft section (311) and located outside the limiting groove (11); the shaft diameter of the second shaft section (312) is greater than the shaft diameter of the first shaft section (311); the groove width of the limiting groove (11) is smaller than the shaft diameter of the second shaft section (312); and the driving block (33) is provided with a connecting groove (331) for accommodating the first shaft section (311).

14. The hinge device according to any one of claims 1 to 10, characterized in that: The connecting rod assembly (2) further comprises: A second connecting rod (22) rotatably connected to the fixed hinge member (1), wherein the second connecting rod (22) intersects with the first connecting rod (21) and is rotatably connected at the intersection; A third connecting rod (23), one end of which is rotatably connected to the door body (30) and the other end of which is rotatably connected to the second connecting rod (22).

15. The hinge device (10) according to claim 14, characterized in that: The fixed hinge member (1) is provided with a slide groove (15) matched with the first connecting rod (21); the first connecting rod (21) has a guide shaft (211) located in the slide groove (15); the slide groove (15) has a first end and a second end opposite to each other; when the connecting rod assembly (2) is in a folded state, the guide shaft (211) is located at the first end; The fixed hinge component (1) further comprises a second avoidance hole (16) at the first end which is in communication with the slide groove (15).

16. The hinge device (10) according to claim 1, characterized in that: The hinge device (10) further comprises a movable hinge member (4) for fixing to the door body (30), and one end of the connecting rod assembly (2) for connecting to the door body (30) is connected to the movable hinge member (4).

17. A refrigeration device (100), comprising a box (20) and a door (30) for opening or closing the box, characterized in that: The refrigeration device (100) further comprises a hinge device (10) according to any one of claims 1 to 16.

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