Hinge device and refrigeration equipment

Abstract

The invention provides a hinge device and refrigeration equipment, and the hinge device comprises a fixed hinge part which is used for being fixed on a box body; one end of the connecting rod assembly is movably connected to the fixed hinge piece, the other end of the connecting rod assembly is used for being connected to a door body, and the connecting rod assembly has a folded state and an unfolded state for driving the door body to be unfolded to a preset opening angle; the power assisting mechanism is provided with a connecting end and a force applying end, the connecting end is connected to the fixed hinge piece, and the force applying end always acts on the connecting rod assembly in the folding state, the unfolding state and the switching process between the folding state and the unfolding state of the connecting rod assembly; in the rear half section of door opening, the power-assisted mechanism acts on the connecting rod assembly in the whole process to achieve power-assisted door opening, and therefore the two hands of a user are greatly liberated in the door opening process, and the door opening process is light, convenient and labor-saving.

Description

Technical Field

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

[0002] With social development and the gradual improvement of living standards, people's demand for aesthetic appeal in home decoration is becoming increasingly prominent. Embedding refrigeration equipment (such as refrigerators) within external environmental components, such as cabinets or walls, to achieve a unified interior design style has become a popular approach. However, traditional refrigeration equipment doors are designed to rotate around a fixed axis to open and close. During this rotation, the pivot point of the door protrudes towards the external environmental component, causing interference and affecting the opening of the door and the use of the refrigeration equipment.

[0003] Some existing refrigeration equipment uses a hinge device with a linkage assembly to movably connect the door to the cabinet. When the door is opened relative to the cabinet, it rotates and translates along a preset trajectory under the drive of the linkage assembly. The structure is simple and can avoid interference between the door and external environmental components.

[0004] Based on the use of hinge devices with linkage assemblies, because the refrigeration equipment is internally cooled, if the door is not closed tightly, it can easily lead to the leakage of cold air inside the refrigeration equipment, causing food spoilage and wasting a lot of electricity. Therefore, a door closer is needed between the door and the cabinet. However, existing door closers generally only provide assistance in the initial stage of opening the door, and users still need to exert force to open the door afterward, which is inconvenient for users. Summary of the Invention

[0005] This application provides a hinge device and a refrigeration device having the same.

[0006] To achieve the above objectives, the technical solution provided in this application is as follows: A hinge device, comprising:

[0007] Fixed hinge components, used to secure the device to the housing;

[0008] A linkage assembly, one end of which is movably connected to the fixed hinge and the other end of which is connected to the door body, the linkage assembly having a folded state and an unfolded state that drives the door body to unfold to a preset opening angle;

[0009] The assisting mechanism has a connecting end and a force-applying end. The connecting end is connected to the fixed hinge member. During the process of the linkage assembly switching between the folded state, the unfolded state, and the folded state and the unfolded state, the force-applying end always acts on the linkage assembly.

[0010] In one embodiment of this application, the connecting end is rotatably connected to the fixed hinge member.

[0011] In one embodiment of this application, the fixed hinge member is provided with a sliding groove; the linkage assembly includes:

[0012] The first link, one end of which is rotatably connected to the fixed hinge;

[0013] The second link has a guide shaft at one end that is rotatably connected to the slide groove, and the other end that is rotatably connected to the door body. The second link and the first link have an intersection point, and the first link and the second link are rotatably connected at the intersection point.

[0014] The third link has one end rotatably connected to the door body and the other end rotatably connected to the end of the first link away from the fixed hinge.

[0015] The force-applying end acts on the second connecting rod.

[0016] In one embodiment of this application, a first line is connected between the guide shaft and the intersection, and a second line is connected between the curvature center of the contact surface between the protruding block and the force-applying end and the connecting end.

[0017] When the link assembly is in the folded state, the folding angle between the first connecting line and the second connecting line is 10° to 45°.

[0018] In one embodiment of this application, a protruding block that interacts with the force-applying end is connected to the second connecting rod. The protruding block is detachably connected to the second connecting rod or the protruding block is integrally formed with the second connecting rod.

[0019] In one embodiment of this application, the ratio of the distance of the protruding block from the guide shaft to the distance of the protruding block from the intersection point is 0.5 to 3.

[0020] In one embodiment of this application, the contact surface between the protruding block and the force-applying end is arc-shaped.

[0021] In one embodiment of this application, an anti-detachment structure is provided between the force-applying end (N) and the connecting rod assembly (2).

[0022] In one embodiment of this application, the slide has a first end and a second end opposite to each other, and when the connecting rod assembly is in the folded state, the guide shaft is located at the first end;

[0023] The fixed hinge component also includes a clearance hole located at the first end and / or the second end and communicating with the slide groove.

[0024] In one embodiment of this application, the guide shaft has a first shaft segment located within the slide groove and a second shaft segment coaxial with the first shaft segment and located outside the slide groove. The shaft diameter of the second shaft segment is greater than the shaft diameter of the first shaft segment, and the width of the slide groove is less than the shaft diameter of the second shaft segment. The clearance hole is a mounting hole, and the diameter of the mounting hole is not less than the shaft diameter of the second shaft segment.

[0025] In one embodiment of this application, the assistive mechanism includes:

[0026] A rotating seat located at the connecting end, the rotating seat being connected to the fixed hinge member;

[0027] A drive block located at the force-applying end, the drive block being used to act on the linkage assembly;

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

[0029] A spring, which is sleeved on the damping rod.

[0030] In one embodiment of this application, the hinge device further includes a movable hinge member for fixing to the door body, and one end of the linkage assembly for connecting to the door body is connected to the movable hinge member.

[0031] To achieve the above-mentioned purpose, this application also provides a refrigeration device, including a housing, a door for opening or closing the housing, and the aforementioned hinge device.

[0032] Compared with the prior art, the beneficial effects of this application are as follows: The hinge device in this application, by setting the assist mechanism to always act on the linkage assembly, in the latter half of closing the door, the assist mechanism acts on the linkage assembly throughout to assist in closing the door, and in particular, in the latter half of opening the door, the assist mechanism acts on the linkage assembly throughout to assist in opening the door, thereby greatly freeing the user's hands during the opening process, making the opening process easy and effortless. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of the refrigeration equipment after it is embedded in the cabinet in a specific embodiment of this application;

[0034] Figure 2 yes Figure 1 A schematic diagram of the hinge device (the linkage assembly is in a folded state);

[0035] Figure 3 yes Figure 2 Exploded view;

[0036] Figure 4 yes Figure 3 An exploded view of the second link and the assist mechanism in the circuit.

[0037] Figure 5 yes Figure 2 A schematic diagram of the hinge device in the middle (the door closing mechanism is in the assisted closing state);

[0038] Figure 6 yes Figure 2 A schematic diagram of the hinge device in the middle (the assist mechanism is in the assisted opening state);

[0039] Figure 7 yes Figure 6 Another structural diagram;

[0040] Figure 8 yes Figure 3 A schematic diagram of the guide shaft in the middle;

[0041] Figure 9 yes Figure 3 Schematic diagram of the fixed hinge component;

[0042] Figure 10 yes Figure 9 Another structural diagram;

[0043] Wherein: 100, refrigeration equipment; 10, hinge device; 1, fixed hinge component; 11, slide groove; A, first end; B, second end; 12, clearance hole; 13, fixing plate; 14, connecting plate; 2, connecting rod assembly; 21, first connecting rod; 22, second connecting rod; 221, guide shaft; 2211, first shaft segment; 2212, second shaft segment; 23, third connecting rod; C, intersection point; 24, protruding block; 241, protruding block body; 242. Abutting post; E. Center of curvature; 3. Assist mechanism; M. Connecting end; N. Force-applying end; 31. Rotating seat; 32. Driving block; 321. Concave surface; 322. Clamping groove; 323. Connecting wall; 324. Driving wall; 325. Stop block; 33. Spring; 34. Damping rod; 20. Box body; 30. Door body; 200. Cabinet; L1. First connecting line; L2. Second connecting line; α. Folding angle; 4. Movable hinge component. Detailed Implementation

[0044] The following will be combined with the appendix Figure 1-10 The specific embodiments shown herein provide a detailed description of this application. However, these embodiments do not limit this application, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the scope of protection of this application.

[0045] The terms used in this application to express position and direction are defined as follows: "front" refers to the side where the door is located when the refrigerator is in normal use, and "outside" refers to the direction away from the refrigerator from the pivot side. For example, in a side-by-side refrigerator, moving one door away from the other door from the pivot side during the opening process is called moving outward, and moving one door closer to the other door from the pivot side during the opening process is called moving inward.

[0046] The terms "first," "second," "third," etc., used in this application are only used to distinguish similar objects and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. Additionally, it should be noted that unless otherwise expressly specified and limited, the terms "set," "connected," and "fixed" should be interpreted broadly. For example, a connection can be a direct connection or an indirect connection through an intermediate medium; it can be a fixed connection, a movable connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0047] Unless otherwise stated, the term "multiple" means two or more.

[0048] It should be noted that, unless otherwise specified, the specific embodiments and features disclosed in this application can be combined with each other.

[0049] Combination Figures 1-10 As shown, this application provides a hinge device 10 and a refrigeration device 100 having the hinge device 10. Specifically, the refrigeration device 100 includes a box 20 for storing items and a door 30 for opening or closing the box 20. The hinge device 10 is used to movably connect the door 30 to the box 20, so as to realize the opening or closing of the box 20 through the door 30. When the door 30 is in the closed state, the door 30 and the box 20 together form a refrigerated space for storing items. When the door 30 is in the open state, it is convenient for the user to store or retrieve items into the box 20. Of course, it should be noted that the hinge device 10 in this application is not limited to the above-mentioned refrigeration device 100, but can also be applied to other home products, such as cabinets 200, wine cabinets, wardrobes, microwave ovens, etc.

[0050] In this embodiment, the hinge device 10 is specifically described using an embedded refrigerator for embedding within an external environment component as an example, where the door 30 is located on the front side of the cabinet 20 and the door 30 is a left-right rotating door. Figure 1The diagram shown is only a partial schematic of the refrigeration device 100 embedded in the cabinet 200 according to a specific embodiment of this application, with only one side of the cabinet 200 shown. It is understood that in actual installation, the refrigeration device 100 is completely embedded in the cabinet 200. Of course, it is also understood that the refrigeration device 100 may not necessarily be embedded in the cabinet 200, but may also be embedded in a wall or other external environmental component.

[0051] Of course, it is understood that this is not a limitation. The hinge device 10 described in this application can also be applied to the non-embedded refrigeration device 100, or to the refrigeration device 100 where the door 30 is located on the upper side of the box 20.

[0052] The hinge device 10 includes a fixed hinge member 1 for fixing to the housing 20, a connecting rod assembly 2 connecting the fixed hinge member 1 and the door 30, and an assist mechanism 3 disposed on the fixed hinge member 1. The connecting rod assembly 2 includes multiple connecting rods that are hinged to each other. One end of the connecting rod assembly 2 is movably connected to the fixed hinge member 1, and the other end is connected to the door 30. When the connecting rod assembly 2 is in the folded state, the multiple connecting rods are close to each other, and the door 30 is in the closed state of closing the housing 20. When the connecting rod assembly 2 is in the unfolded state of driving the door 30 to unfold to a preset opening angle, the door 30 is in the open state of opening the housing 20.

[0053] It should be noted that the preset opening angle mentioned above refers to the preset maximum opening angle of the door 30.

[0054] In this application, on the one hand, by setting the assist mechanism 3 on the fixed hinge component 1, since the fixed hinge component 1 is far from the door 30 after the hinge device 10 is installed between the cabinet 20 and the door 30, the fixed hinge component 1 is less likely to deform under the influence of the gravity of the door 30. Therefore, the stability and reliability of the interaction force between the assist mechanism 3 and the linkage assembly 2 can be improved, and the stability of opening and closing the door can be improved. On the other hand, compared with the existing method of setting the assist mechanism 3 on the linkage assembly 2, the assist mechanism 3 and each link in the linkage assembly 2 in this application are arranged side by side in the horizontal direction and set on the fixed hinge component 1 at a position that will not interfere with the linkage assembly 2. This frees up space at the linkage assembly 2, so that the volume and thickness of each link in the linkage assembly 2 can be made smaller, thereby reducing the overall thickness of the hinge device 10, saving installation space, and significantly reducing the width of the crossbeam on the cabinet 20 used to install the hinge device 10, thereby reducing the impact on the overall volume of the refrigerator.

[0055] Specifically, the assist mechanism 3 has a connecting end M connected to the fixed hinge 1 and a force-applying end N opposite to the connecting end M. During the process of the linkage assembly 2 being in the folded state, the unfolded state, and switching between the folded and unfolded states—that is, during the rotational opening or closing of the door 30—the assist mechanism 3 is configured such that the force-applying end N always acts on the linkage assembly 2, thereby assisting the linkage assembly 2 in switching to the folded state or to the unfolded state. Combined with… Figure 5 As shown, when the assist mechanism 3 assists the linkage assembly 2 to switch to the folded state, the assist mechanism 3 achieves assisted door closing, that is, assists the door body 30 to close; combined with Figure 6 As shown, when the assist mechanism 3 can assist the linkage assembly 2 to switch to the unfolded state, the assist mechanism 3 realizes assisted door opening, that is, assisted door opening.

[0056] In this application, by configuring the assist mechanism 3 to always act on the linkage assembly 2, thus, in the latter half of the closing process, such as... Figure 5 As shown, the assist mechanism 3 acts on the linkage assembly 2 throughout the entire process to assist in closing the door, especially in the latter half of the opening process, such as... Figure 6 As shown, the assist mechanism 3 acts on the linkage assembly 2 throughout the entire process to assist in opening the door, thereby greatly freeing the user's hands during the door opening process, making the door opening process easy and effortless.

[0057] It is known that during the opening phase corresponding to the stage where the assist mechanism 3 assists in closing the door, the assist mechanism 3 will apply a force to prevent the door from opening; during the closing phase corresponding to the stage where the assist mechanism 3 assists in opening the door, the assist mechanism 3 will apply a force to prevent the door from closing.

[0058] In one specific embodiment, the connecting end M is rotatably connected to the fixed hinge 1. During the opening and closing of the door 30, the assist mechanism 3 rotates around the connecting end M to act on the connecting rod assembly 2, which can prevent the assist mechanism 3 from disengaging from the connecting rod assembly 2, improve the stability of the cooperation between the assist mechanism 3 and the connecting rod assembly 2, and improve the smoothness of opening and closing the door 30.

[0059] In one specific implementation method, combined with Figure 3As shown, the assist mechanism 3 includes a rotating seat 31 located at the connecting end M, a driving block 32 located at the force-applying end N, and an elastic element disposed between the rotating seat 31 and the driving block 32. The rotating seat 31 is rotatably connected to the fixed hinge 1 so that the assist mechanism 3 can rotate around the connecting end M. The driving block 32 acts on the linkage assembly 2. During the switching between the folded state and the unfolded state of the linkage assembly 2, the elastic element is in a compressed state. Therefore, under the action of the elastic restoring force of the elastic element, the driving block 32 can drive the linkage assembly 2 to achieve assisted closing and / or assisted opening of the door.

[0060] It should be noted that the state of the elastic element is not particularly limited when the linkage assembly 2 is in the folded or unfolded state; that is, the elastic element can be set to a free state or a compressed state. If the elastic element is in a compressed state when the linkage assembly 2 is in the folded state, the elastic restoring force of the elastic element can maintain the folded state of the linkage assembly 2, thus maintaining the closed state of the door 30. This prevents the door 30 from not closing properly and achieves a certain energy-saving effect. If the elastic element is in a compressed state when the linkage assembly 2 is in the unfolded state, the elastic restoring force of the elastic element, on the one hand, ensures that the assist mechanism 3 and the linkage assembly 2 are supported and will not disengage, which is beneficial to the stability of the linkage between the assist mechanism 3 and the linkage assembly 2; on the other hand, it can maintain the unfolded state of the linkage assembly 2, thus maintaining the opening angle of the door 30. This prevents the door 30 from shaking and facilitates the user's loading and unloading of items.

[0061] In one specific embodiment, the elastic element is a spring 33, and the assist mechanism 3 further includes a damping rod 34. One end of the damping rod 34 is connected to the rotating seat 31, and the other end is connected to the driving block 32. The spring 33 is sleeved on the damping rod 34, with one end of the spring 33 abutting against the rotating seat 31 and the other end abutting against the driving block 32. This improves the stability of the elastic deformation of the elastic element, preventing the elastic element from tilting in any direction other than the elastic deformation direction, thereby improving the stability of the force exerted by the assist mechanism 3. However, this is not a limitation.

[0062] In some embodiments, the fixed hinge 1 is further provided with a slide groove 11. The linkage assembly 2 includes a first link 21 rotatably connected to the fixed hinge 1, a second link 22 rotatably and slidably connected to the slide groove 11, and a third link 23 connecting the door body 30 and the first link 21. The first link 21 and the second link 22 intersect at an intersection point C and are rotatably connected at the intersection point C. The other end of the second link 22 is rotatably connected to the door body 30. One end of the third link 23 is rotatably connected to the door body 30, and the other end is rotatably connected to the end of the first link 21 away from the fixed hinge 1. Specifically, the end of the second link 22 near the fixed hinge 1 has a guide shaft 221 that is rotatably and slidably connected to the slide groove 11. Through the cooperation between the guide shaft 221 and the slide groove 11, the second link 22 is rotatably and slidably connected to the slide groove 11. During the rotation of the door 30 relative to the housing 20, the guide shaft 221 in the second connecting rod 22 moves and rotates along the slide groove 11, so that the door 30 moves along a preset trajectory, thereby avoiding interference between the door 30 and external environmental components.

[0063] Combination Figure 7 As shown, the first link 21 is a single-layer link, while the second link 22 and the third link 23 are double-layer links. Specifically, both the second link 22 and the third link 23 include a first plate spaced apart in the vertical direction and a second plate connected to one end of the first plate in the width direction. The first link 21 passes through the second plate between the two second plates of the second link 22, and the end of the first link 21 away from the fixed hinge 1 is rotatably connected between the two first plates of the third link 23.

[0064] In one specific embodiment, the force-applying end N acts on the second connecting rod 22. Specifically, in conjunction with Figures 3-4 As shown, a protruding block 24 is connected to the second connecting rod 22, which interacts with the force-applying end N. The protruding block 24 protrudes towards the force-applying end N of the assist mechanism 3 to engage with the force-applying end N. That is, the protruding block 24 and the driving block 32 abut against each other to achieve linkage between the assist mechanism 3 and the connecting rod assembly 2. Of course, this is not a limitation; in other embodiments, the force-applying end N can also be configured to act on the first connecting rod 21.

[0065] In some embodiments, the ratio of the distance of the protruding block 24 from the guide shaft 221 to the distance of the protruding block 24 from the intersection point C is 0.5 to 3. It is understood that the closer the protruding block 24 is to the guide shaft 221, the larger the force arm of the elastic element assisting in closing the door, and the better the door-closing effect of the corresponding assisting mechanism 3; the closer the protruding block 24 is to the intersection point C, the larger the force arm of the elastic element assisting in opening the door, and the better the door-opening effect of the corresponding assisting mechanism 3, while simultaneously, the smaller the door-closing angle.

[0066] In one specific embodiment, the protruding block 24 is integrally formed with the second connecting rod 22 to improve the stability of the interaction between the protruding block 24 and the driving block 32, and to simplify the structure of the hinge device 10. Of course, this is not a limitation; in other embodiments, the protruding block 24 may also be detachably connected to the second connecting rod 22, and the protruding block 24 and the second connecting rod 22 may be fixedly connected by a fixing structure to fix the protruding block 24 to the second connecting rod 22 and to restrict the movement of the protruding block 24 relative to the second connecting rod 22.

[0067] Specifically, in combination Figure 2 , Figures 5-6 As shown, a first line L1 is defined between the guide shaft 221 and the intersection point C, and a second line L2 is defined between the curvature center E of the contact surface between the protruding block 24 and the driving block 32 and the connecting end M. A folding angle α is formed between the first line L1 and the second line L2. The folding angle α refers to the acute angle among the two angles between the first line L1 and the second line L2 when the connecting rod assembly 2 is in the folded state.

[0068] It is known that as the linkage assembly 2 gradually unfolds from the folded state, the folding angle α gradually increases. Before the linkage assembly 2 unfolds from the folded state to the folding angle α being 90°, that is, before the door 30 rotates open to the folding angle α being 90°, the assist mechanism 3 applies a force to the linkage assembly 2 to drive it to switch to the folded state, that is, it applies a force opposite to the opening force, that is, a force that prevents the door from opening. When the linkage assembly 2 unfolds from the folded state to the folding angle α being 90° and continues to unfold, that is, when the door 30 rotates open to the folding angle α being 90° and continues to open, the folding angle α is a gradually increasing obtuse angle, and the assist mechanism 3 applies an auxiliary force to open the door, that is, to achieve assisted opening. Correspondingly, as the linkage assembly 2 gradually folds from the unfolded state, the folding angle α gradually decreases from an obtuse angle. Before the linkage assembly 2 folds from the unfolded state to a folding angle α of 90°, that is, before the door 30 rotates to close to a folding angle α of 90°, the folding angle α is an obtuse angle. The assist mechanism 3 applies a force to the linkage assembly 2 to drive it to switch to the unfolded state, which is to apply a force opposite to the closing force, i.e., a force that prevents the door from closing. When the linkage assembly 2 folds from the unfolded state to a folding angle α of 90° and continues to fold, that is, when the door 30 rotates to close to a folding angle α of 90° and continues to close, the folding angle α becomes a gradually decreasing acute angle. The assist mechanism 3 applies an auxiliary closing force, i.e., assists in closing the door, and maintains the closed state of the door 30 when it is in the closed state.

[0069] In some embodiments, when the linkage assembly 2 is in the folded state, the folding angle α between the first connecting line L1 and the second connecting line L2 is 10° to 45°. This increases the door-closing angle, achieving a more effortless door-closing effect.

[0070] In one specific embodiment, the contact surface between the protruding block 24 and the force-applying end N is arc-shaped. That is, the contact surface between the driving block 32 and the protruding block 24 is arc-shaped. This improves the smoothness of the fit between the protruding block 24 and the driving block 32, thereby further improving the smoothness of opening and closing the door. It is understood that, at this time, the center of curvature E of the contact surface between the protruding block 24 and the driving block 32 refers to the center of the circle containing the contact surface. Throughout the entire process of the protruding block 24 and the driving block 32 contacting each other, the center of curvature E of the contact surface between the protruding block 24 and the force-applying end N remains constant at this center. Of course, this is not the only limitation. In other embodiments, the contact surface between the driving block 32 and the protruding block 24 can also be a non-circular arc. In this case, during the entire process of the protruding block 24 and the driving block 32 contacting each other, the contact surface between the protruding block 24 and the force-applying end N will change, and the curvature center E of the corresponding contact surface will also be different.

[0071] Specifically, in combination Figure 4 As shown, the protruding block 24 includes a protruding block body 241 connected to the second connecting rod 22 and an abutment post 242 connected to one end of the protruding block body 241 facing the driving block 32. The abutment post 242 abuts against the driving block 32. The abutment post 242 is cylindrical, and the end of the driving block 32 facing the protruding block 24 has an arc-shaped concave surface 321 that mates with the abutment post 242. The abutment surface between the protruding block 24 and the force-applying end N refers to the mating surface between the cylinder and the concave surface 321. Therefore, the abutment surface between the abutment post 242 and the driving block 32 is arc-shaped and is an arc surface.

[0072] It is understood that in the embodiment where the contact surface between the protruding block 24 and the force-applying end N is arc-shaped, the aforementioned second connecting line L2 refers to the connecting line between the rotation axis of the connecting end M and the center of the cylinder.

[0073] In some embodiments, an anti-disengagement structure is provided between the force-applying end N and the connecting rod assembly 2 to prevent the force-applying end N from disengaging from the connecting rod assembly 2. In embodiments where the force-applying end N acts on the second connecting rod 22, the anti-disengagement structure is provided between the driving block 32 and the second connecting rod 22 or the protruding block 24 to prevent the driving block 32 from disengaging from the protruding block 24, thereby improving the assisting stability of the assisting mechanism 3 and the stability of the hinge device 10.

[0074] Specifically, in combination Figure 4As shown, along the radial direction of the circle containing the concave surface, i.e. along the radial direction of the cylinder, the anti-detachment structure includes a stop block 325 disposed at at least one end of the concave surface 321 in the radial direction, so as to prevent the cylinder from detaching from the concave surface from both ends of the concave surface in the radial direction, thereby improving the stability of the engagement between the assist mechanism 3 and the protruding block 24.

[0075] It is known that the stop block 325 and the drive block 32 are integrally formed.

[0076] In one specific embodiment, the stop block 325 is disposed at the end of the drive block 32 away from the door body 30. Of course, this is not a limitation.

[0077] In some implementations, combined Figure 4 As shown, the anti-detachment structure further includes a clamping groove 322 located at the force-applying end N. The portion of the protruding block body 241 / the second connecting rod 22 that cooperates with the force-applying end N is clamped within the clamping groove 322. The clamping groove 322 cooperates with the protruding block body 241 / the second connecting rod 22 to limit the assist mechanism 3 along the axial direction of the circle containing the concave surface 321 / the axial direction of the cylinder, preventing the driving block 32 from disengaging from the protruding block 24, thereby improving the assist stability of the assist mechanism 3 and the stability of the hinge device 10. Of course, this is not a limitation. In other embodiments, the clamping groove 322 can also be located at the portion of the protruding block body 241 / the second connecting rod 22 that cooperates with the force-applying end N, with the force-applying end N clamped within the clamping groove 322.

[0078] Specifically, the drive block 32 includes a connecting wall 323 connected to the damping rod 34, and a drive wall 324 connected to the upper and lower ends of the connecting wall 323, wherein the drive wall 324 is perpendicular to the connecting wall 323. A clamping groove 322 is formed between the two drive walls 324. It is understood that, in this case, the aforementioned concave surface 321 is provided at the end of the drive wall 324, and the aforementioned stop block 325 is part of the drive wall 324. However, this is not a limitation.

[0079] In some implementations, combined Figure 3As shown, the slide groove 11 has a first end A and a second end B. When the connecting rod assembly 2 is in the folded state, the guide shaft 221 is located at the first end A. The fixed hinge member 1 also includes a clearance hole 12 disposed at the first end A and / or the second end B and communicating with the slide groove 11. When the clearance hole 12 is provided at the first end A, on the one hand, the guide shaft 221 will not collide with the fixed hinge member 1 when the guide shaft 221 moves to the first end A, avoiding noise and preventing damage to the guide shaft 221. On the other hand, it can ensure the sealing effect of the door 30. When the clearance hole is provided at the second end B, when the door 30 is opened to the maximum opening angle, the guide shaft 221 will collide with the fixed hinge member 1 at the second end B, avoiding noise and preventing damage to the guide shaft 221.

[0080] In one specific implementation method, combined with Figure 3 , Figure 8 As shown, the guide shaft 221 has a first shaft segment 2211 located within the slide groove 11 and a second shaft segment 2212 coaxial with the first shaft segment 2211 and located outside the slide groove 11. The shaft diameter of the second shaft segment 2212 is larger than the shaft diameter of the first shaft segment 2211, and the groove width of the slide groove 11 is smaller than the shaft diameter of the second shaft segment 2212. The clearance hole 12 is a mounting hole, and the diameter of the mounting hole is not smaller than the shaft diameter of the second shaft segment 2212. Therefore, the guide shaft 221 can be installed through the mounting hole, that is, the second shaft segment 2212 is passed through the mounting hole, and after installation, the guide shaft 221 is moved from the mounting hole to the first end A. With the cooperation of the second shaft segment 2212 and the slide groove 11, the axial movement of the guide shaft 221 can be restricted, improving the stability of the cooperation between the guide shaft 221 and the slide groove 11.

[0081] It is understood that in the embodiment where both the first end A and the second end B are provided with the clearance hole 12, only one of the clearance holes 12 needs to be set as the mounting hole.

[0082] Specifically, in combination Figures 9-10 As shown, the fixed hinge component 1 includes a fixed plate 13 for fixing to the housing 20 and two connecting plates 14 connected to opposite ends of the fixed plate 13. The connecting plates 14 are perpendicular to the fixed plate 13. That is, the fixed hinge component 1 has a U-shaped double-layer structure, which can improve the strength of the hinge device 10.

[0083] The assist mechanism 3 and the connecting rod assembly 2 are disposed between the two connecting plates 14, which can hide the assist mechanism 3 and the connecting rod assembly 2 and improve the overall appearance of the hinge device 10.

[0084] Specifically, both connecting plates 14 are provided with the sliding groove 11, and the guide shaft 221 includes the second shaft segment 2212 and two first shaft segments 2211 located at opposite ends of the second shaft segment 2212. When connecting the second connecting rod 22 to the fixed hinge 1, first place the second connecting rod 22 between the two connecting plates 14, and align the shaft hole on the second connecting rod 22 for the guide shaft 221 to pass through with the clearance hole 12. Insert the guide shaft 221 from the outside of the fixed hinge 1 into the clearance hole 12 and the shaft hole, so that the second shaft segment 2212 is located in the shaft hole, and the two first shaft segments 2211 are respectively located in the corresponding clearance holes 12. Finally, move the second connecting rod 22 so that the two first shaft segments 2211 respectively enter the corresponding slide grooves 11. The installation is simple. At this time, because the shaft diameter of the second shaft segment 2212 is larger than the groove width of the slide groove 11, the two opposite ends of the second shaft segment 2212 abut against the two connecting plates 14, which can restrict the movement of the limiting shaft relative to the slide groove 11 along its axial direction, and improve the stability of the fit between the guide shaft 221 and the slide groove 11.

[0085] The pivot end of the door 30 in the refrigeration device 100, which rotates relative to the housing 20, is defined as the pivot end. When the door 30 is in the closed state, the direction from the center of the door 30 away from the housing 20 is defined as the first direction F1, and the direction from the center of the door 30 toward the pivot end is defined as the second direction F2. It is understood that the definitions of the pivot end, the first direction F1, and the second direction F2 also apply to the hinge device 10. Specifically, the pivot end of the movable hinge 4 in the hinge device 10, which rotates relative to the fixed hinge 1, is defined as the pivot end. When the movable hinge 4 is in the closed state, i.e., when the linkage assembly 2 is in the folded state, the direction from the center of the movable hinge 4 away from the fixed hinge 1 is defined as the first direction F1, and the direction from the center of the movable hinge 4 toward the pivot end is defined as the second direction F2.

[0086] Specifically, the first direction F1 is the forward direction away from the housing 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.

[0087] In one specific embodiment, the slide groove 11 is located on the side away from the pivot end side of the hinge point between the first connecting rod 21 and the fixed hinge member 1. Furthermore, the extension direction of the slide groove 11 from the first end A towards the second end B has directional components of a first direction F1 and a second direction F2. This allows the connecting rod assembly 2 to switch between the folded state and the unfolded state.

[0088] As the linkage assembly 2 gradually unfolds from its folded state, the movable hinge 4 moves simultaneously along the first direction F1 and the second direction F2. That is, during the rotational opening process of the door 30, the translational direction of the door 30 simultaneously has directional components of the first direction F1 and the second direction F2. On the one hand, during the opening of the door 30, the door 30 moves forward along the first direction F1 away from the cabinet 20, so that the pivot end of the door 30 located on the pivot end side gradually moves to the front side of the wall / cabinet 200 located on the pivot end side. This avoids interference between the door 30 and the wall / cabinet 200 located on the pivot end side during the opening process, allowing the door 30 to adapt to various application scenarios, such as the application scenario of built-in refrigerators. At the same time, it can also increase the maximum opening angle of the door 30. On the other hand, during the opening of the door 30, the door 30 simultaneously moves outward along the second direction F2 away from the cabinet 20, which can increase the opening degree of the door 30 and prevent the door 30 from obstructing the pulling out of the shelves / drawers inside the cabinet 20, thus making it easier for users to view and retrieve the items inside the cabinet 20.

[0089] In some embodiments, the hinge device 10 further includes a movable hinge member 4 for fixing to the door body 30, and one end of the link assembly 2 connected to the door body 30 is connected to the movable hinge member 4. That is, both the third link 23 and the second link 22 are rotatably connected to the movable hinge member 4. Modularizing the hinge device 10 facilitates the assembly of the hinge device 10 with the door body 30, and also helps to further improve the strength of the hinge device 10.

[0090] In summary, the hinge device 10 in this application, on the one hand, by setting the assist mechanism 3 on the fixed hinge member 1, can improve the stability and reliability of the interaction force between the assist mechanism 3 and the linkage 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 setting the assist mechanism 3 to always act on the linkage assembly 2, in the latter half of closing the door, the assist mechanism 3 acts on the linkage assembly 2 throughout the process to assist in closing the door, and in particular, in the latter half of opening the door, the assist mechanism 3 acts on the linkage assembly 2 throughout the process to assist in opening the door, thereby greatly freeing the user's hands during the opening process, making the opening process easy and effortless.

[0091] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, for example, if the technologies in different embodiments can be used in combination to achieve the corresponding effects simultaneously, the solutions are also within the protection scope of this application. Those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A hinge device (10), characterized in that: include: Fixed hinge component (1) is used to fix it to the box body (20); Linkage assembly (2), one end of which is movably connected to the fixed hinge (1) and the other end is connected to the door body (30). The linkage assembly (2) has a folded state and an unfolded state that drives the door body (30) to unfold to a preset opening angle. The assisting mechanism (3) has a connecting end (M) and a force-applying end (N). The connecting end (M) is connected to the fixed hinge (1). During the process of switching between the folded state, the unfolded state, and the folded state and the unfolded state, the force-applying end (N) always acts on the link assembly (2).

2. The hinge device (10) as claimed in claim 1, characterized in that: The connecting end (M) is rotatably connected to the fixed hinge member (1).

3. The hinge device (10) as described in claim 1, characterized in that: The fixed hinge component (1) is provided with a sliding groove (11); the connecting rod assembly (2) includes: The first link (21) has one end rotatably connected to the fixed hinge (1); The second link (22) has a guide shaft (221) at one end that is rotatably connected to the slide groove (11), and the other end is rotatably connected to the door body (30). The second link (22) and the first link (21) have an intersection point (C), and the first link (21) and the second link (22) are rotatably connected at the intersection point (C). The third link (23) has one end rotatably connected to the door body (30) and the other end rotatably connected to the end of the first link (21) away from the fixed hinge (1). The force-applying end (N) acts on the second connecting rod (22).

4. The hinge device (10) as described in claim 3, characterized in that: There is a first line (L1) between the guide shaft (221) and the intersection (C), and a second line (L2) between the curvature center (E) of the contact surface between the protruding block (24) and the force-applying end (N) and the connecting end (M). When the link assembly (2) is in the folded state, the folding angle (α) between the first connecting line (L1) and the second connecting line (L2) is 10° to 45°.

5. The hinge device (10) as described in claim 3, characterized in that: The second link (22) is connected to a protruding block (24) that acts in response to the force-applying end (N). The protruding block (24) is detachably connected to the second link (22) or the protruding block (24) is integrally formed with the second link (22).

6. The hinge device (10) as described in claim 5, characterized in that: The ratio of the distance of the protruding block (24) from the guide shaft (221) to the distance of the protruding block (24) from the intersection point (C) is 0.5 to 3.

7. The hinge device (10) as claimed in claim 5, characterized in that: The contact surface between the protruding block (24) and the force-applying end (N) is arc-shaped.

8. The hinge device (10) as claimed in claim 1, characterized in that: An anti-detachment structure is provided between the force-applying end (N) and the connecting rod assembly (2).

9. The hinge device (10) as claimed in claim 3, characterized in that: The slide (11) has a first end (A) and a second end (B) opposite each other. When the link assembly (2) is in the folded state, the guide shaft (221) is located at the first end (A). The fixed hinge component (1) further includes a clearance hole (12) located at the first end (A) and / or the second end (B) and communicating with the slide groove (11).

10. The hinge device (10) as claimed in claim 9, characterized in that: The guide shaft (221) has a first shaft section (2211) located in the slide groove (11) and a second shaft section (2212) coaxial with the first shaft section (2211) and located outside the slide groove (11). The shaft diameter of the second shaft section (2212) is greater than the shaft diameter of the first shaft section (2211), and the groove width of the slide groove (11) is smaller than the shaft diameter of the second shaft section (2212). The clearance hole (12) is a mounting hole, and the diameter of the mounting hole is not smaller than the shaft diameter of the second shaft section (2212).

11. The hinge device (10) as claimed in claim 1, characterized in that: The assisting mechanism (3) includes: A rotating seat (31) located at the connecting end (M) is connected to the fixed hinge member (1); A drive block (32) located at the force-applying end (N) is used to act on the linkage assembly (2); A damping rod (34), one end of which is connected to the rotating seat (31) and the other end of which is connected to the driving block (32); A spring (33) is sleeved on the damping rod (34).

12. The hinge device (10) as claimed in claim 1, characterized in that: The hinge device (10) further includes a movable hinge element (4) for fixing to the door body (30), and one end of the link assembly (2) for connecting to the door body (30) is connected to the movable hinge element (4).

13. A refrigeration device (100), comprising a housing (20) and a door (30) for opening or closing the housing (20), characterized in that: The refrigeration device (100) further includes a hinge device (10) as described in any one of claims 1 to 12.

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