Hinges and opening and closing devices

Abstract

The present application relates to the technical field of household appliances and discloses a hinge and an opening and closing device, wherein the hinge includes a first hinge seat, a second hinge seat, a sliding member and an elastic member, the first hinge seat has a first matching structure, the first matching structure has a first curved surface and a first matching surface; the second hinge seat has a first accommodating cavity extending along a first direction, and one end of the first accommodating cavity has a first opening; the sliding member is arranged in the first accommodating cavity, and the sliding member can slide along the first direction in the first accommodating cavity, the sliding member has a second matching structure, the second matching structure has a second curved surface and a second matching surface, and the second matching structure abuts against the first matching structure through the first opening; the elastic member is arranged in the first accommodating cavity and is located at the end of the sliding member away from the first matching structure, and the elastic member applies a thrust to the sliding member to move the sliding member toward the first matching structure; the hinge of the present application improves user experience and reduces the transportation cost of the opening and closing device.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and in particular to a hinge and an opening and closing device. Background Art

[0002] This section merely provides background information related to the present application and is not necessarily prior art.

[0003] A refrigerator is a common opening and closing device, and a refrigerator is usually set up with an upper door structure. When opening the door of the refrigerator, it is necessary to overcome the gravity on the door, so it is more laborious to open the door. When closing the door, the door may fall faster due to the effect of gravity, causing a more violent collision between the door and the cabinet, affecting the user experience. In some technologies, by setting an auxiliary structure on the hinge, a certain amount of assistance can be provided during the door opening process, and during the door closing process, the problem of the door body falling rapidly due to inertia caused by gravity can be alleviated. However, the setting of the auxiliary structure makes the hinge structure complex and occupies a large space, resulting in more laborious hinge assembly. In addition, due to the increase in the space occupied by the hinge, the size of the entire refrigerator will increase. When the refrigerator is transported, the space occupied by the refrigerator increases, which reduces the number of refrigerators that can be loaded on the transportation vehicle and increases the transportation cost. Summary of the Invention

[0004] The purpose of this application is to at least alleviate the problem of complex hinge structure and large space occupation. This purpose is achieved through the following technical solutions:

[0005] A first aspect of the present application provides a hinge, comprising:

[0006] A first hinge seat, wherein the first hinge seat has a first matching structure, and the first matching structure has a first curved surface and a first matching surface;

[0007] The second hinge seat has a first accommodating cavity extending along a first direction, and one end of the first accommodating cavity has a first opening;

[0008] a sliding member disposed in the first accommodating cavity, the sliding member and the second hinge seat being relatively fixed in a circumferential direction of the first accommodating cavity, and the sliding member being capable of sliding along a first direction within the first accommodating cavity, the sliding member having a second mating structure, the second mating structure having a second curved surface and a second mating surface, the second mating structure abutting against the first mating structure through the first opening;

[0009] an elastic member disposed in the first accommodating cavity and located at an end of the sliding member away from the first matching structure, the elastic member applying a thrust to the sliding member to move the sliding member toward the first matching structure;

[0010] The hinge has a first posture and a second posture. The first articulated seat can rotate back and forth relative to the second articulated seat around an axis extending in a first direction within a preset angle range, so that the first mating structure and the second mating structure slide relative to each other, so that the hinge switches between the first posture and the second posture. In the first posture, the first mating surface abuts the second mating surface, and in the second posture, the first curved surface abuts the second curved surface, so that the first articulated seat and the second articulated seat have a relative rotation force under the action of the thrust.

[0011] According to the hinge of the present application, the hinge can be connected between the box body and the door body of an opening and closing device (such as a refrigerator) so that the door body and the box body are hinged, wherein the door body can be connected to the first hinge seat, and the box body can be connected to the second hinge seat. During the opening process of the door body, when the hinge rotates to the second posture, with the cooperation of the first curved surface and the second curved surface, the thrust generated by the elastic member can make the first hinge seat and the second hinge seat have a relative rotation force, that is, the first hinge seat has a torque for rotating relative to the second hinge seat, so that the thrust applied by the elastic member to the sliding member can assist the opening of the door body through the first curved surface and the second curved surface; in the process of closing the door body, the elastic member forms a force on the hinge to at least balance part of the gravity of the door body, alleviate the problem of rapid descent of the door body, resulting in a violent collision between the door body and the box body, and improve the user experience. At the same time, the elastic part and the sliding part are both arranged in the first accommodating cavity of the second hinge seat. The hinge can convert the thrust of the elastic part along the first direction into the force in the rotation direction of the hinge. The hinge is simple and easy to assemble, which reduces the space occupied by the hinge, increases the number of opening and closing devices that can be loaded on the transport vehicle, and reduces the transportation cost of the opening and closing equipment.

[0012] In addition, the hinge according to the present application may also have the following additional technical features:

[0013] In some embodiments of the present application, the first curved surface and / or the second curved surface is a helical surface.

[0014] In some embodiments of the present application, the first curved surface extends along the first direction, the first mating surface is arranged at one end of the first curved surface close to the second mating structure, the second curved surface extends along the first direction, and the second mating surface is arranged at one end of the second curved surface close to the first mating structure.

[0015] In some embodiments of the present application, the first mating surface and the second mating surface are both perpendicular to the first direction.

[0016] In some embodiments of the present application, the first hinge seat includes a first clamping plate and a first hinge part, the first clamping plate and the first hinge part are integrally constructed, and the first matching structure is provided on the first hinge part.

[0017] In some implementations of the present application, the second hinge seat includes a second clamping plate and a second hinge part, the second clamping plate and the second hinge part are integrally constructed, and the first accommodating cavity is provided with the second hinge part.

[0018] In some embodiments of the present application, a first mounting hole is provided on the first card plate, and the first mounting hole is used to cooperate with a fixing member to fix the first card plate on the opening and closing device.

[0019] In some embodiments of the present application, the second card board includes a first sub-card board and a second sub-card board, the first sub-card board and the second sub-card board are spaced apart, the first sub-card board is used to be embedded in the card groove of the opening and closing device, and the second sub-card board is provided with a second mounting hole, and the second mounting hole is used to cooperate with a fixing member to connect the second sub-card board to the opening and closing device.

[0020] In some embodiments of the present application, the first hinged part is provided with a second accommodating cavity, the second accommodating cavity is provided with a second opening, the second opening is arranged opposite to and in communication with the first opening, the first matching structure is arranged in the second accommodating cavity, and the end of the first hinged part provided with the second opening is sealedly connected to the end of the second hinged part provided with the first opening.

[0021] In some embodiments of the present application, the first mating surface and / or the second mating surface and / or the first curved surface and / or the second curved surface are provided with an oil storage tank.

[0022] In some embodiments of the present application, a pressure relief hole is provided at one end of the second hinge portion away from the first opening, and the pressure relief hole is communicated with the first accommodating cavity;

[0023] And / or, a pressure relief hole is provided at one end of the first hinge portion away from the second opening, and the pressure relief hole is communicated with the second accommodating cavity.

[0024] In some embodiments of the present application, a first stop portion is provided on a side of the first card plate close to the second hinge portion, and a second stop portion is provided on a side of the second sub-card plate close to the first hinge portion. The first stop portion and the second stop portion cooperate to limit the maximum angle of rotation of the first hinge seat relative to the second hinge portion.

[0025] In some embodiments of the present application, a first positioning portion is provided on the first articulated seat, and a second positioning portion is provided on the second articulated seat. The second positioning portion and the first positioning portion can cooperate with each other to position the first articulated seat and the second articulated seat at an initial installation angle, and the connection between the first positioning portion and the first articulated seat and / or the second positioning portion and the second articulated seat can be released.

[0026] In some embodiments of the present application, a first guide structure extending along the first direction is provided on the outer peripheral wall of the sliding member, and a second guide structure extending along the first direction is provided in the first accommodating cavity of the second hinged seat. The first guide structure cooperates with the second guide structure to relatively fix the sliding member and the second hinged seat in the circumferential direction of the first accommodating cavity, and to enable the sliding member to move along the first direction.

[0027] In some embodiments of the present application, the first hinge seat, the second hinge seat and the sliding member are all hard plastic members.

[0028] The second aspect of the present application provides an opening and closing device, comprising:

[0029] Box with opening

[0030] The door body is hinged to the opening of the box body through the hinge proposed in this application or any embodiment of this application.

[0031] According to the opening and closing device of the present application, which includes the hinge proposed in the present application or any embodiment of the present application, it at least has the beneficial effects of the hinge proposed in the present application or any embodiment of the present application.

[0032] In addition, the opening and closing device according to the present application may also have the following additional technical features:

[0033] In some embodiments of the present application, the opening and closing device is a refrigerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to denote the same components. In the drawings:

[0035] Figure 1 Schematic diagrams of hinges according to some embodiments of the present application are schematically shown;

[0036] Figure 2 Schematically shows a split schematic diagram of the hinge of some embodiments of the present application;

[0037] Figure 3 A schematic diagram schematically illustrates a sliding member of some embodiments of the present application from one perspective;

[0038] Figure 4 Schematically showing a schematic diagram of a first hinged seat from one perspective in some embodiments of the present application;

[0039] Figure 5 A schematic diagram schematically illustrates a second hinged seat from one viewing angle in some embodiments of the present application;

[0040] Figure 6 Schematically showing a cross-sectional view of a hinge in one direction according to some embodiments of the present application;

[0041] Figure 7 Schematically showing a cross-sectional view of a hinge in another direction according to some embodiments of the present application;

[0042] Figure 8 Schematically shows Figure 7 Magnified view of the T part;

[0043] Figure 9 A schematic diagram schematically illustrates the assembly of the second hinged seat and the sliding member from one perspective in some embodiments of the present application;

[0044] Figure 10 Schematically showing a schematic diagram of a first hinged seat from one perspective in some embodiments of the present application;

[0045] Figure 11 Schematic diagrams of gaskets according to some embodiments of the present application are schematically shown;

[0046] Figure 12 Schematically showing a cross-sectional view of a hinge in one direction according to some embodiments of the present application;

[0047] Figure 13 Schematically shows Figure 12 AA cross-sectional view;

[0048] Figure 14 Schematically shows Figure 13 Magnified view of the S part;

[0049] Figure 15 Schematic diagrams of opening and closing devices according to some embodiments of the present application are schematically shown;

[0050] Figure 16 Schematically showing a rear view of an opening and closing device according to some embodiments of the present application;

[0051] Figure 17 Schematically shows Figure 16 Enlarged view of the R part;

[0052] Figure 18 Schematically shows Figure 16 BB cross-sectional view;

[0053] Figure 19 Schematically shows Figure 18 Enlarged view of the Q part;

[0054] Figure 20 A partial schematic diagram schematically illustrates an opening and closing device according to an embodiment of the present application;

[0055] Figure 21 for Figure 20 Schematic diagram of the assembly of the second hinged seat on the box body.

[0056] The reference numerals are as follows:

[0057] 10. Hinge;

[0058] 100, first hinge seat; 110, first hinge portion; 111, second connecting surface; 112, annular step; 113, annular groove; 120, first clamping plate; 121, first mounting hole; 122, first stopper; 130, second accommodating cavity; 140, first mating structure; 141, first curved surface; 142, first mating surface; 143, first bottom surface; 144, oil reservoir; 150, first positioning portion; 160, reinforcing rib;

[0059] 200, second hinge seat; 210, second hinge portion; 211, raised strip; 212, extension portion; 213, annular boss; 214, annular protrusion; 215, first connecting surface; 221, first sub-cage; 222, second sub-cage; 223, second mounting hole; 224, second stop portion; 230, first accommodating cavity; 231, second guide structure; 240, second positioning portion; 250, pressure relief hole;

[0060] 300, sliding member; 310, second matching structure; 311, second curved surface; 312, second matching surface; 313, second bottom surface; 320, first guide structure;

[0061] 400, elastic parts;

[0062] 500, connecting shaft; 510, through hole;

[0063] 600, gasket; 610, notch;

[0064] 20. Box body; 202. Third opening; 203. Fourth opening; 204. Mounting cavity; 105. Card groove; 206. Opening; 207. Card slot;

[0065] 30. Door body;

[0066] X, first direction. DETAILED DESCRIPTION

[0067] The following describes exemplary embodiments of the present application in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. Instead, these embodiments are provided to enable a more thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art.

[0068] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0069] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0070] For ease of description, spatially relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "beneath," "above," and the like. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped, an element described as "below" or "beneath" another element or feature would then be oriented as "above" or "above" the other element or feature. Thus, the example term "below" can encompass both above and below orientations. The device may be otherwise oriented (rotated 90 degrees or in other orientations) and the spatially relative descriptors used herein are interpreted accordingly.

[0071] In top-opening door opening and closing devices, such as refrigerators, one side of the door (usually the rear) is hinged to the other side of the cabinet (usually the rear), allowing the door to open and close by rotating on the hinged side. Common hinges used for opening and closing devices include leaf hinges and sheet metal power-assisted hinges. A leaf hinge is a structure where the upper and lower seats are connected by a rotating shaft. This type of hinge is simple, has no springs or power assist, and can be designed to be very compact. However, when using this type of hinge, the door can only be opened with the force applied by the user, making it more laborious to open. Furthermore, when closing the door, the door falls rapidly due to gravity and inertia, causing a violent collision between the door and the cabinet, resulting in a poor user experience. The working method of the sheet metal power-assisted hinge is to set the compression spring vertically along the rear side wall of the cabinet body, so that the compression spring cooperates with the connecting rod to provide power to the hinged upper seat in the direction of door opening during the door opening process. Specifically, the spring force acts on the connecting rod of the first hinge seat. When the first hinge seat rotates around the rotating shaft, the connecting rod rotates around the rotating shaft. On the one hand, this structure requires a relatively large spring force, because the torque of the spring acting on the connecting rod is small. In order to ensure the thrust, the spring force needs to be large enough, which requires the outer diameter of the spring to be large, generally greater than 15 mm; generally, the thickness of the hinge after assembly is greater than 20 mm, which occupies a large space, is not conducive to the increase of the loading capacity of the transportation vehicle, and leads to increased transportation costs. In order to reduce the problem of space occupied by sheet metal power-assisted hinges, some technologies sink the hinge into the box body. However, for refrigerators, this will result in the part that sinks into the box body, the thickness of the foam layer is reduced, and there is a risk of condensation in the sunken part of the box body; as the thickness of the box body continues to decrease, the risk of condensation becomes greater and greater, affecting the quality of the refrigerator;

[0072] It can be seen that reducing the impact of the hinge on the product space occupancy rate without reducing the thickness of the bubble layer and without affecting the basic performance of the product is an urgent problem that needs to be solved.

[0073] In response to the above problems, Figures 1 to 21 As shown, according to an embodiment of the present application, a hinge 10 is proposed, including a first hinge seat 100 , a second hinge seat 200 , a sliding member 300 and an elastic member 400 .

[0074] The first hinge seat 100 has a first mating structure 140 having a first curved surface 141 and a first mating surface 142. The second hinge seat 200 has a first accommodating cavity 230 extending along a first direction X, with a first opening at one end. A sliding member 300 is disposed within the first accommodating cavity 230. The sliding member 300 and the second hinge seat 200 are relatively fixed in the circumferential direction of the first accommodating cavity 230 and are capable of sliding within the first accommodating cavity 230 along the first direction X. The sliding member 300 has a second mating structure 310 having a second curved surface 311 and a second mating surface 312. The second mating structure 310 abuts against the first mating structure 140 through the first opening. An elastic member 400 is disposed in the first accommodating cavity 230 and is located at the end of the sliding member 300 facing away from the second mating structure 310. The elastic member 400 applies a thrust to the sliding member 300, causing it to move toward the first mating structure 140.

[0075] The hinge 10 has a first posture and a second posture. The first articulated seat 100 can rotate back and forth relative to the second articulated seat 200 around an axis extending along the first direction X within a preset angle range, so that the first mating structure 140 and the second mating structure 310 slide relative to each other, so that the hinge 10 switches between the first posture and the second posture. In the first posture, the first mating surface 142 abuts the second mating surface 312, and in the second posture, the first curved surface 141 abuts the second curved surface 311, so that the first articulated seat 100 and the second articulated seat 200 have a relative rotation force under the action of thrust.

[0076] The thrust imparts a force to the first hinge seat 100 and the second hinge seat 200 that causes relative rotation. This can be understood as the force applied by the elastic member 400 to the sliding member 300, in conjunction with the first curved surface 141 and the second curved surface 311, imparting a force component that causes the first hinge seat 100 to rotate relative to the second hinge seat 200. This results in a tendency for the first hinge seat 100 and the second hinge seat 200 to rotate relative to each other, or in the first hinge seat 100 and the second hinge seat 200 to rotate under the action of this force. In other words, the elastic member 400 imparts torque to the first hinge seat 100 and the second hinge seat 200. When the hinge 10 is assembled to an opening and closing device, typically in the second position, the hinge 10 has a tendency to rotate the door body in the direction of door opening, i.e., the hinge 10 has a force to rotate in the first rotational direction, which is the same as the direction of door opening.

[0077] The first curved surface 141 may be a helical surface. The second curved surface 311 may be a helical surface. Both the first curved surface 141 and the second curved surface 311 may extend along the first direction X. The first mating surface 142 may be disposed at an end of the first curved surface 141 close to the second mating structure 310 , and the second mating surface 312 may be disposed at an end of the second curved surface 311 close to the first mating structure 140 .

[0078] Among them, the first hinge seat 100 can be connected to the door body 30 of the opening and closing device, and the second hinge seat 200 can be connected to the box body 20 of the opening and closing device. During the opening and closing process of the door body 30, the second hinge seat 200 is fixedly set, and the first hinge seat 100 rotates synchronously with the door body 30.

[0079] When the hinge 10 is mounted on the opening and closing device, the first direction X can be configured to be parallel to the opening of the opening and closing device. When the opening and closing device is placed on a relatively flat surface, the first direction X can be understood as referring to the horizontal direction. If the opening and closing device is a top-opening door, with the opening and closing side of the door body 30 facing forward and the hinge 10 positioned at the rear of the opening and closing device, the first direction X can be the left-right direction of the opening and closing device.

[0080] When the hinge 10 is assembled, the first posture of the hinge 10 can correspond to the closed state of the door body 30 of the opening and closing device and the state in which the door body 30 is opened at a smaller angle, and the second posture can correspond to the maximum open state of the door body 30 of the opening and closing device and the state in which the door body 30 is opened at a larger angle. In this way, the first rotation direction is also the opening direction of the door body 30. Specifically, the maximum opening angle of the door body 30 corresponding to the first posture can be a range of 15 to 45 degrees from the closed state to the opening direction of the door body 30. For example, the opening angle of the door body 30 corresponding to the first posture is 0 to 15 degrees, 0 to 20 degrees, or 0 to 21 degrees, or 0 to 25 degrees, 0 to 30 degrees, 0 to 35 degrees, 0 to 40 degrees, or 0 to 45 degrees when the door body 30 is opened. Among them, the maximum opening angle of the door body 30 corresponding to the first posture corresponds to the maximum opening angle when the hinge 10 cannot buffer the closing of the door body 30 or assist the opening of the door body 30. In other words, when the door body 30 is opened from the closed state to a maximum opening angle of the door body 30 corresponding to the first posture, the first curved surface 141 abuts against the second curved surface 311, and the hinge 10 can assist in the opening of the door body 30; before the door body 30 rotates from the maximum opening state to the maximum opening angle of the door body 30 corresponding to the first posture, the first curved surface 141 abuts against the second curved surface 311, and the hinge 10 can buffer the closing of the door body 30.

[0081] During actual assembly, the elastic member 400 can be reasonably set according to the gravity of the door body 30, so that the torque generated by the hinge 10 in the second posture can be greater than the torque generated by the gravity of the door body 30, so that the door body 30 can hover in the second posture. When the door body 30 can hover in the second posture, the opening angle of the door body 30 corresponding to the second posture is also the hovering angle of the door body 30. The lower limit of the hovering angle range is consistent with the maximum opening angle of the door body 30 corresponding to the first posture, that is, the maximum opening angle of the door body 30 corresponding to the first posture is the critical point between hovering and not hovering. When it is greater than the maximum opening angle of the door body 30 corresponding to the first posture, the door body 30 can hover, and when it is less than the maximum opening angle of the door body 30 corresponding to the first posture, the door body 30 cannot hover; the upper limit of the hovering angle range can be consistent with the angle of the door body 30 opened to the maximum state.

[0082] The preset angular range of rotation of the first hinge seat 100 relative to the second hinge seat 200 corresponds to the opening of the door body 30. That is, when the door body 30 is closed and fully opened, the angular range of rotation of the door body 30 can serve as the preset angular range of the first hinge seat 100 and the second hinge seat 200. In this embodiment, the angle of the door body 30 to be fully opened can be 70 to 90 degrees. For example, the rotation angle range of the door body 30 can be 0 to 90 degrees, 0 to 85 degrees, 0 to 80 degrees, 0 to 75 degrees, or 0 to 70 degrees. In some embodiments, the rotation angle range of the door body 30 can be specifically set to 0 to 80 degrees, wherein at 0 degrees, the door body 30 is closed, and at 80 degrees, the door body 30 is fully opened.

[0083] The first accommodating chamber 230 may be cylindrical in shape with a circular cross section.

[0084] The first mating structure 140 and the second mating structure 310 can be ratchet-like structures. Specifically, the first hinge seat 100 can be provided with a ratchet-like structure at one end facing the sliding member 300, including a plurality of (specifically, two, three or more, generally two based on reasonable consideration of occupied space and strength) first grooves spaced apart along the circumference, the sidewall of the first groove forming a first curved surface 141, and the end surface of the sidewall of the first groove (i.e., the top surface of the sidewall of the first groove) forming a first mating surface 142; the sliding member 300 is generally cylindrical, and the sliding member 300 can be provided with a ratchet-like structure at one end facing the first mating structure 140, including a plurality of second grooves spaced apart along the circumference, the second grooves corresponding to the first grooves one by one, the sidewall of the second groove (i.e., the top surface of the sidewall of the second groove) forming a second curved surface 311, and the end surface of the sidewall of the second groove forming a second mating surface 312.

[0085] When the first hinge seat 100 rotates relative to the second hinge seat 200, the first mating structure 140 and the second mating structure 310 can slide relative to each other, so that different positions of the first mating structure 140 mate with different positions of the second mating structure 310. When the door body 30 is closed, the hinge 10 can be in a first posture, with the first mating surface 142 abutting against the second mating surface 312. At this time, the elastic member 400 is in a compressed state, and the first mating surface 142 and the second mating surface 312 can be configured as end surfaces perpendicular to the first direction X. In this way, the thrust applied by the elastic member 400 to the sliding member 300 does not cause the hinge 10 to generate torque, and the door body 30 can be closed on the box body 20 by gravity. During the opening process of the door body 30, the first mating surface 142 slides relative to the second mating surface 312 and gradually transforms into the first curved surface 141 abutting the second curved surface 311. The first curved surface 141 slides relatively on the second curved surface 311, and the elastic member 400 gradually returns to its original position, while continuing to apply a thrust to the sliding member 300, while the thrust gradually decreases. When the first curved surface 141 abuts the second curved surface 311, that is, in the second posture, the thrust applied by the elastic member 400 to the sliding member 300 generates a force in the radial tangential direction of the abutment position between the first curved surface 141 and the second curved surface 311. This force causes the door body 30 to have a tendency to rotate in the opening direction, thereby balancing the gravity of the door body 30. When the door body 30 is opened to the maximum opening, the first curved surface 141 and the second curved surface 311 can still maintain abutment, and when the door body 30 is opened to the maximum opening, the ratchet-like structure of the first hinge seat 100 and the ratchet-like structure of the sliding member 300 can engage with each other, that is, the side wall of the first groove is inserted into the second groove, and the side wall of the second groove is inserted into the first groove, the first mating surface 142 and the bottom surface of the second groove (the second bottom surface 313) can abut, and the second mating surface 312 and the bottom surface of the first groove (the first bottom surface 143) can abut.

[0086] The elastic member 400 is specifically a spring. After the hinge 10 is assembled, the spring can always be in a compressed state so that the spring can apply a thrust to the sliding member 300 .

[0087] According to the hinge 10 of this embodiment, the hinge 10 can be connected between the cabinet 20 and the door 30 of an opening and closing device (e.g., a refrigerator), so that the door 30 is hingedly connected to the cabinet 20. Specifically, the door 30 can be connected to the first hinge seat 100, and the cabinet 20 can be connected to the second hinge seat 200. Rotation of the first hinge seat 100 relative to the second hinge seat 200 in a first rotational direction can be configured to open the door 30. Through the cooperation of the sliding member 300 and the first matching structure 140, the hinge 10 of this embodiment can convert the lateral force of the elastic member 400 (i.e., the spring) into a force consistent with the rotation direction of the first hinge seat 100, ultimately achieving rotation of the hinge 10 and opening and closing of the door 30. Specifically, during the opening process of the door body 30, when the hinge 10 rotates to the second posture, the elastic member 400 causes the first hinge seat 100 to have a force to rotate relative to the second hinge seat 200 in the first rotational direction. That is, the thrust applied by the elastic member 400 to the sliding member 300 can assist in opening the door body 30 through the first curved surface 141 and the second curved surface 311. During the closing process of the door body 30, the force generated by the elastic member 400 on the hinge 10 can at least partially balance the gravity of the door body 30, alleviating the problem of the door body 30 rapidly descending and causing a violent collision between the door body 30 and the box body 20, thereby improving the user experience. At the same time, the elastic member 400 and the sliding member 300 are both disposed within the first accommodating cavity 230 of the second hinge seat 200. The hinge 10 can convert the thrust of the elastic member 400 in the first direction X into a force for the hinge 10 to rotate. The hinge 10 is simple and easy to assemble, which reduces the space occupied by the hinge 10, thereby increasing the number of opening and closing devices that can be loaded on a transport vehicle and reducing the transportation cost of the opening and closing devices.

[0088] Furthermore, the elastic member 400 and the sliding member 300 are both arranged in the first accommodating cavity 230 of the second hinge seat 200. The elastic member 400 is built-in, which reduces the risk of the hinge 10 pinching the user's or assembler's fingers and improves safety.

[0089] In this embodiment, the axial force of the elastic member 400 along the first direction X can be converted into a relatively large torque for rotating the first hinge seat 100 through the first mating structure 140 and the second mating structure 310. As a result, the required elastic force of the elastic member 400 is reduced. If the elastic member 400 is a spring, the wire diameter of the spring can be approximately 2.5 mm, and the outer diameter of the entire spring can be no greater than 16 mm, specifically 15.8 mm. Due to the reduced size of the elastic member 400, the impact of the hinge 10 on the space occupancy of the opening and closing device can be reduced, namely, the protrusion of the rear side of the hinge 10 from the side wall of the box body 20 can be reduced. Combined with the rational design of the box body 20, when the hinge 10 of this embodiment is installed on the opening and closing device, the protrusion of the hinge 10 from the side wall of the box body 20 can be no greater than 10 mm, thereby increasing the overall container loading capacity of the product and saving transportation costs.

[0090] It should be noted that this embodiment is mainly described by taking the example of the first hinge seat 100 being connected to the door body 30 of the opening and closing device and the second hinge seat 200 being connected to the box body 20 of the opening and closing device. However, in actual assembly, the first hinge seat 100 can also be connected to the box body 20 of the opening and closing device, and the second hinge seat 200 can be connected to the door body 30 of the opening and closing device as needed. That is, the first hinge seat 100 and the box body 20 are relatively fixed, and the second hinge seat 200 rotates synchronously with the door body 30. In this case, the first hinge seat 100 is fixed, and due to the relativity of movement, the rotation of the first hinge seat 100 relative to the second hinge seat 200 can be achieved by the rotation of the second hinge seat 200.

[0091] It should also be noted that the first mating surface 142 and the second mating surface 312 do not have to be planes perpendicular to the first direction X. The first mating surface 142 and the second mating surface 312 can be configured so long as the thrust applied by the elastic member 400 to the sliding member 300 does not generate a force that causes the door body 30 to open. For example, the first mating surface 142 and the second mating surface 312 can also be curved surfaces. In this case, the curved surface serving as the first mating surface 142 has a spiral direction opposite to that of the first curved surface 141, and the curved surface serving as the second mating surface 312 has a spiral direction opposite to that of the second curved surface 311. In this way, when the first mating surface 142 and the second mating surface 312 abut against each other, the elastic member 400 can generate a force that causes the door body 30 to rotate in the closing direction, so that the door body 30 can better cover the box body 20.

[0092] According to some embodiments of the present application, optionally, in some embodiments, such as Figure 1 、 Figure 2 and Figure 4 As shown, the first hinge seat 100 includes a first clamping plate 120 and a first hinge portion 110. The first clamping plate 120 and the first hinge portion 110 are integrally constructed, and the first mating structure 140 is provided on the first hinge portion 110. The second hinge seat 200 includes a second clamping plate and a second hinge portion 210. The second clamping plate and the second hinge portion 210 are integrally constructed, and the first accommodating cavity 230 is provided on the second hinge portion 210. The first hinge portion 110 and the second hinge portion 210 are rotatably connected. The first clamping plate 120 is used to connect to the door body 30 of the opening and closing device, and the second clamping plate is used to connect to the box body 20 of the opening and closing device.

[0093] The first hinge seat 100 can be integrally formed by injection molding, and the first clamping plate 120 and the first hinge portion 110 are formed by injection molding. The second hinge seat 200 can be integrally formed by injection molding, and the second clamping plate and the second hinge portion 210 are formed by injection molding.

[0094] Optionally, the first clamping plate 120 may be provided with a first mounting hole 121, which is configured to cooperate with a fixing member to secure the first clamping plate 120 to the door body 30. The number of first mounting holes 121 may be one, or multiple first mounting holes 121 may be spaced apart. The fixing member may be a bolt, a screw, or the like. In one specific implementation, the first mounting hole 121 is a mounting hole, and the fixing member is a bolt.

[0095] Optionally, the second card plate includes a first sub-card plate 221 and a second sub-card plate 222, wherein the second sub-card plate 222 is provided with a second mounting hole 223, and the second mounting hole 223 is used to cooperate with a fixing member to fix the second sub-card plate 222 to the box body 20. The number of the second mounting holes 223 can be one, or a plurality of fixing members arranged at intervals. The fixing member can be a bolt, a screw, etc. The first sub-card plate 221 is fixedly connected to the second hinge portion 210 and is located on the side of the second sub-card plate 222 close to the door body 30. The first sub-card plate 221 is used to be plugged and fixed with the box body 20, and specifically can be plugged and cooperated with the card groove 105 arranged horizontally or vertically in the box body 20. The first sub-clip 221 is connected to the housing 20 by plugging. When the door 30 is opened, that is, when the first hinge seat 100 rotates, the first sub-clip 221 is the main component that bears the torque. The second sub-clip 222 is fixed through the second mounting hole 223, which can strengthen the fixation between the second hinge seat 200 and the door 30 and prevent the second hinge seat 200 from moving. The first sub-clip 221 and the second sub-clip 222 can both be integrally constructed with the second hinge portion 210.

[0096] In a specific embodiment, Figure 1 、 Figure 2 and Figure 4 As shown, combined with Figure 16 、 Figure 17As shown, the first clip 120 has a door mounting surface facing the door body 30, which can be a flat surface. The first clip 120 is attached to the end face of the door body 30 through the door mounting surface. Bolts or screws are passed through the first mounting holes 121 to be fixedly connected to the door body 30, thereby fixing the first clip 120 to the door body 30. The second sub-clip 222 has a box mounting surface facing the box body 20, which can be a flat surface. The second sub-clip 222 is attached to the outer side of the box body 20 through the box mounting surface. Bolts or screws are passed through the second mounting holes 223 to be fixedly connected to the side wall of the box body 20 (when the second sub-clip 222 is attached to the rear side, the side wall is the rear side wall), thereby fastening the second sub-clip 222 to the box body 20. Specifically, the hinge 10 can be set on the rear side of the opening and closing device, the first card plate 120 can be affixed to and fixedly connected to the rear end surface of the door body 30, and the second sub-card plate 222 can be affixed to and fixedly connected to the rear side surface of the box body 20; when the door body 30 is closed, the first card plate 120 and the second sub-card plate 222 are both arranged approximately in the vertical direction, that is, the angle between the first card plate 120 and the second sub-card plate 222 is 180 degrees or approximately 180 degrees. During the opening process of the door body 30, the first card plate 120 and the first hinge part 110 rotate backward synchronously, and the angle between the first card plate 120 and the second sub-card plate 222 on the side facing the opening and closing device increases, and the angle between the first card plate 120 and the second sub-card plate 222 on the side away from the closing device (the angle and the angle between the side facing the opening and closing device are the mutual circumferential angle) decreases.

[0097] In some embodiments, as Figure 1 and Figure 2 As shown, the first card board 120 can be provided with three first mounting holes 121, wherein two first mounting holes 121 are arranged at intervals and aligned along the first direction X, and another first mounting hole 121 is provided on a side of the above two first mounting holes 121 close to the second daughter card board 222, that is, the three first mounting holes 121 can be arranged in a triangle. The second daughter card board 222 can be provided with two second mounting holes 223, wherein the two second mounting holes 223 are arranged at intervals and aligned along the first direction X.

[0098] Optionally, the first clip 120 and the second sub-clip 222 may be further provided with reinforcing ribs 160. Specifically, in one implementation, one or more reinforcing ribs 160 are provided on the surface of the first clip 120 opposite the door mounting surface, and one or more reinforcing ribs 160 are provided on the surface of the second sub-clip 222 opposite the box mounting surface. The reinforcing ribs 160 can increase the strength of the first clip 120 and / or the second sub-clip 222, thereby increasing the service life of the first clip 120 and the second sub-clip 222. The reinforcing ribs 160 can be integrally formed with the corresponding clip.

[0099] Optionally, in order to limit the wide-open state of the door body 30, that is, to limit the opening degree of the door body 30, corresponding stop structures can be provided on the first clamping plate 120 and the second sub-clamping plate 222. Specifically, in one embodiment, a first stop 122 is provided on a side of the first clamping plate 120 close to the second hinge portion 210, and a second stop 224 is provided on a side of the second sub-clamping plate 222 close to the first hinge portion 110. The first stop 122 and the second stop 224 cooperate to limit the maximum rotation angle of the first hinge seat 100 and the second hinge portion 210 along the first rotation direction.

[0100] The first stopper 122 can be integrally formed with the first card plate 120, and the second stopper 224 can be integrally formed with the second sub-card plate 222. The first stopper 122 can be disposed on the surface of the first card plate 120 opposite to the door mounting surface, and the second stopper 224 can be disposed on the end surface of the second sub-card plate 222 connected to the box mounting surface.

[0101] According to some embodiments of the present application, optionally, the first hinged part 110 is provided with a second accommodating cavity 130, the second opening of the second accommodating cavity 130 is arranged opposite to and in communication with the first opening, the first matching structure 140 is arranged in the second accommodating cavity 130, and the end of the first hinged part 110 provided with the second opening is sealedly connected to the end of the second hinged part 210 provided with the first opening.

[0102] The second accommodating chamber 130 may be cylindrical with a circular cross-section.

[0103] The first mating structure 140 and the second mating structure 310 need to slide together. To improve the smoothness of the sliding and reduce wear on the first mating structure 140 and the second mating structure 310, lubricant can be added between the first mating structure 140 and the second mating structure 310. The first hinge portion 110 is provided with a second accommodating cavity 130, which is sealed and connected to the first accommodating cavity 230. This allows the first mating structure 140 and the second mating structure 310 to be in a relatively sealed environment, ensuring the effectiveness of lubricant storage and long-term use.

[0104] Reference Figure 7 and Figure 8As shown, in one implementation, the end surface of the second hinged portion 210 provided with the first opening has an annular first connecting surface 215 and an annular boss 213 protruding relative to the first connecting surface 215. In the radial direction, the annular boss 213 is located on the inner side of the first connecting surface 215. The end surface of the first hinged portion 110 provided with the second opening has an annular second connecting surface 111 and an annular step 112 recessed relative to the second connecting surface 111. In the radial direction, the annular step 112 is located on the inner side of the second connecting surface 111. After the first hinge part 110 is connected to the second hinge part 210, the first connecting surface 215 is arranged opposite to the second connecting surface 111, the annular boss 213 is arranged corresponding to the recessed annular step 112, and the annular boss 213 and the annular step 112 can be provided with mutually matching annular grooves 113 and annular protrusions 214. Specifically, the annular protrusion 214 can be provided on the annular boss 213, and the annular groove 113 can be provided on the annular step 112, and the annular groove 113 and the annular protrusion 214 can be plugged into each other.

[0105] It can be understood that the matching structure of the annular boss 213, the annular protrusion 214 on the annular step 112 and the annular groove 113 can form an oil locking structure, that is, a sealing groove structure, on the end face where the first hinge part 110 and the second hinge part 210 are connected, thereby reducing the risk of lubricating oil leaking from the connecting end face between the first hinge part 110 and the second hinge part 210.

[0106] According to some embodiments of the present application, optionally, as Figure 4 and Figure 10 As shown, the first mating surface 142 and / or the second mating surface 312 and / or the first curved surface 141 and / or the second curved surface 311 may be provided with an oil storage groove 144 .

[0107] Specifically, the oil storage tank 144 can be set on one of the first mating surface 142, the second mating surface 312, the first curved surface 141 and the second curved surface 311, or on two of the four, or on three of the four, or on all four.

[0108] The oil storage groove 144 is a groove formed on the corresponding surface. On the same mating surface or the same curved surface, there can be one or more oil storage grooves 144 .

[0109] like Figure 4 and Figure 10 As shown, in a specific embodiment of the present application, an oil storage tank 144 is provided at the sliding structure of the first matching structure 140 of the first hinge seat 100 , that is, the oil storage tank 144 can be provided on the first curved surface 141 .

[0110] The oil storage tank 144 can be used to store some lubricating oil. When the first hinge seat 100 rotates relative to the second hinge seat 200 , the lubricating oil can be stored in the oil storage tank 144 to reduce wear on the first matching structure 140 and the second matching structure 310 .

[0111] According to some embodiments of the present application, optionally, a pressure relief hole 250 is provided on the first hinge portion 110 and / or the second hinge portion 210, and the pressure relief hole 250 is in communication with the first accommodating chamber 230. Specifically, when the pressure relief hole 250 is provided on the first hinge portion 110, the pressure relief hole 250 provided on the first hinge portion 110 can be in communication with the second accommodating chamber 130. Since the second accommodating chamber 130 is in communication with the first accommodating chamber 230, the pressure relief hole 250 is also in communication with the first accommodating chamber 230.

[0112] In a specific embodiment, Figure 1 and Figure 5 As shown, a pressure relief hole 250 may be further provided at one end of the second hinge portion 210 away from the first opening, and the pressure relief hole 250 is communicated with the first accommodating cavity 230 .

[0113] When the hinge 10 rotates, the lubricating oil inside the hinge 10, that is, in the first accommodating cavity 230 and the oil storage tank 144, is squeezed, and the internal space is compressed, resulting in a local pressure increase. By providing the pressure relief hole 250, the oil leakage problem caused by the internal air pressure imbalance can be avoided.

[0114] It should be noted that the pressure relief hole 250 should be set higher than the oil level of the lubricating oil that can be stored in the first accommodating chamber 230 to reduce the risk of the lubricating oil leaking from the pressure relief hole 250 .

[0115] According to some embodiments of the present application, optionally, a first positioning portion 150 may be provided on the first articulated seat 100, and a second positioning portion 240 may be provided on the second articulated seat 200. The second positioning portion 240 and the first positioning portion 150 can cooperate to position the first articulated seat 100 and the second articulated seat 200 at an initial installation angle, and the connection between the first positioning portion 150 and the first articulated seat 100 and / or the second positioning portion 240 and the second articulated seat 200 can be disconnected.

[0116] The initial installation angle is the positioning angle during the assembly process of the first hinge seat 100 and the second hinge seat 200. Typically, the hinge 10 is connected to the opening and closing device only after the first hinge seat 100 and the second hinge seat 200 are assembled. To facilitate the connection of the hinge 10 with the door body 30 and the box body 20 of the opening and closing device, the angle between the first hinge seat 100 and the second hinge seat 200, which facilitates the installation of the first hinge seat 100 with the door body 30 and the second hinge seat 200 with the box body 20, can be used as the initial installation angle. In this embodiment, the door body 30 is in the closed state, which is most convenient for assembly of the hinge seats with the opening and closing device. Furthermore, there is no torque between the first hinge seat 100 and the second hinge seat 200. Therefore, the initial installation angle can be set so that the first clamping plate 120 of the first hinge seat 100 and the second sub-clamping plate 222 of the second hinge seat 200 are approximately 180 degrees.

[0117] The first positioning portion 150 and the second positioning portion 240 cooperate to form a self-locking structure of the hinge 10, so that the first articulated seat 100 and the second articulated seat 200 are temporarily fixed, the first articulated seat 100 cannot rotate relative to the second articulated seat 200, and the relative installation position between the first articulated seat 100 and the second articulated seat 200 can be positioned, reducing the risk of incorrect installation of the first articulated seat 100 and the second articulated seat 200.

[0118] The first positioning portion 150 and the first hinge seat 100 are disconnectable, which can be understood as the connection between the first positioning portion 150 and the first hinge seat 100 can be disconnected. This disconnection can be a destructive connection that cannot be restored or a detachable connection. Similarly, the second positioning portion 240 and the second hinge seat 200 are disconnectable, which can be understood as the connection between the second positioning portion 240 and the second hinge seat 200 can be disconnected. This disconnection can be a destructive connection that cannot be restored or a detachable connection.

[0119] In one specific embodiment, one of the first positioning portion 150 and the second positioning portion 240 is a groove structure, and the other is a protrusion structure. Taking the example of the first positioning portion 150 being a protrusion structure and the second positioning portion 240 being a groove structure, when the hinge 10 is assembled, the protrusion structure of the first hinge seat 100 is assembled into the groove structure of the second hinge seat 200, thereby preventing the hinge 10 from rotating. Furthermore, the base of the protrusion structure is thinned. When the hinge 10 is first installed, as the door body 30 opens, the protrusion structure becomes stuck in the groove structure, and the protrusion structure then breaks at the base, achieving circumferential separation of the first hinge seat 100 and the second hinge seat 200, thereby enabling rotation of the hinge 10.

[0120] Furthermore, the groove structure may be designed with an inclined surface so that the broken protruding structure can flow out of the groove structure along the inclined surface, thereby preventing the protruding structure from remaining on the hinge 10 .

[0121] According to some embodiments of the present application, optionally, a first guide structure 320 extending along the first direction X may be provided on the outer peripheral wall of the sliding member 300, and a second guide structure 231 extending along the first direction X may be provided in the first accommodating cavity 230 of the second articulated seat 200. The first guide structure 320 cooperates with the second guide structure 231 to relatively fix the sliding member 300 and the second articulated seat 200 in the circumferential direction of the first accommodating cavity 230, and to enable the sliding member 300 to move along the first direction X.

[0122] Specifically, the first guide structure 320 and the second guide structure 231 can be a combination of a convex strip and a concave groove. Specifically, in this embodiment, a concave groove is provided on the outer peripheral wall of the sliding member 300, and a convex strip is provided on the inner wall of the first accommodating cavity 230. The convex strip is disposed within the concave groove, and the convex strip and the concave groove can slide relative to each other in the first direction X. There can be multiple convex strips and concave grooves corresponding to each other, specifically 2-8. In this embodiment, there are four convex strips and four concave grooves, respectively. The four convex strips are evenly spaced along the circumference of the first accommodating cavity 230, and the corresponding four concave grooves are evenly spaced along the circumference of the sliding member 300.

[0123] The first guide structure 320 and the second guide structure 231 can enable the sliding member 300 to move along the expansion and contraction direction of the elastic member 400 (i.e., the spring), i.e., the first direction X, and can limit the rotation of the sliding member 300, so that the sliding member 300 can only slide along the compression and extension direction of the elastic member 400 (i.e., the spring).

[0124] Optionally, in this embodiment, the first hinge seat 100 , the second hinge seat 200 and the sliding member 300 are all hard plastic parts, specifically, they can be POM (POM, Polyformaldehyde, polyoxymethylene resin) material, nylon and other wear-resistant materials.

[0125] The hinge 10 of this embodiment can be assembled using a connecting shaft 500. Specifically, a through hole 510 is provided on each of the first hinge portion 110, the second hinge portion 210, the sliding member 300, and the elastic member 400. The through hole 510 can be coaxial with the first accommodating cavity 230 and the second accommodating cavity 130. If the elastic member 400 is a spring, the through hole 510 of the elastic member 400 is the internal space of the spring's helical line. The connecting shaft 500 passes through the first hinge portion 110 (including the first mating structure 140), the sliding member 300 (including the second mating structure 310), the elastic member 400, and the second hinge portion 210 in sequence, thereby fixing the first hinge base 100, the second hinge base 200, the elastic member 400, and the second hinge base 200 together. The connecting shaft 500 can be fixed by riveting or by fitting nuts on one or both ends of the connecting shaft 500.

[0126] Furthermore, a gasket 600 may be provided at one end of the first hinge portion 110 away from the second hinge portion 210 , and the connecting shaft 500 may pass through the gasket 600 and then be riveted or fixed with a nut.

[0127] The edge of the gasket 600 may be provided with a notch 610 , and the end surface where the first hinge portion 110 cooperates with the gasket 600 may be provided with a protruding structure, which corresponds to the notch 610 and can prevent the gasket 600 from rotating with the first hinge seat 100 .

[0128] It is understandable that a gasket 600 may also be provided at one end of the second hinge portion 210 facing away from the first hinge portion 110 .

[0129] Reference Figure 9 as well as Figure 10As shown, the central angle of the second mating surface 312 of the hinge 10 of this embodiment is α1, and the central angle of the second curved surface 311 is α2. In the initial state of the door body 30 being closed (in this initial state, a portion of the first mating surface 142 abuts against the second mating surface 312, and the first mating surface 142 also has another portion suspended opposite to the second curved surface 311, the central angle of the projection area formed by the projection of the second mating surface 312 onto the first curved surface 141 is α3, the central angle of the first mating surface 142 is α4, and the central angle of the first curved surface 141 is α5. Among them, the angles of α1, α2, α3 and α4 determine the position of the hinge 10 during movement and when the hinge 10 enters the inclined surface (the inclined surface is the second curved surface 311) of the sliding member 300 from the top (i.e., the second mating surface 312) of the sliding member 300 The angle of the hinge 10 is the angle at which the spring force acts on the first hinge seat 100; by adjusting the difference between angle α1 and angle α3, the lowest hovering angle for opening the door can be determined; the difference between angle α1 and angle α3 is the lowest hovering angle for opening the door, which can be between 15 and 45 degrees, which can provide a better user experience; the sizes of angles α2 and α5 determine the door opening angle of the hinge 10. When designing, the door opening angle of the door body 30 is generally between 70 and 90 degrees, preferably 80°. In order to ensure that the spring still has a large force on the hinge 10 after the door is opened to keep the door body 30 supported, the design angles α2 and α5 of the hinge 10 are greater than 55°, preferably 60°; the angle α4 takes into account the reliability of the door closing position and the risk of reverse rotation when the upper seat (refer to the first hinge seat 100) shakes. The design angle is preferably 45°.

[0130] It should be noted that the centers of α1, α2, α3, α4 and α5 are all located on the axis of rotation of the first hinge seat 100 relative to the second hinge seat 200.

[0131] The hinge 10 of this embodiment is in its initial state after initial assembly, as shown in FIG. Figure 1 、 Figure 6 and Figure 7 As shown. The hinge 10 can be assembled to the opening and closing device in the initial state. At this time, the door body mounting surface and the box body mounting surface are coplanar, and the sliding top surface (first mating surface 142) of the first hinge seat 100 is in contact with the mounting top surface (second mating surface 312) of the sliding member 300. At this time, the spring force is transmitted to the sliding top surface of the first hinge seat 100 through the sliding top surface of the sliding member 300. The force transmission is transmitted along the axial direction, so the sliding member 300 of the first hinge seat 100 is not subject to lateral force, and thus no force to open the door is generated; when the door body 30 is opened and the hinge 10 rotates, the sliding top surface of the first hinge seat 100 and the mounting top surface of the sliding member 300 still maintain contact; when rotated to a certain angle (the angle depends on the size of the top surface, combined with user experience and door opening force requirements, it can be 20-40°), as shown Figure 12、 Figure 13 and Figure 14 As shown, the sliding inclined surface (first curved surface 141) of the first hinge seat 100 contacts the sliding inclined surface (second curved surface 311) of the sliding member 300. At this time, the spring force acts on the sliding member 300. The sliding member 300 decomposes the force into forces along the axial direction and perpendicular to the tangent of the inclined surface through the angle of the sliding member 300; the force perpendicular to the tangent can be decomposed into a force perpendicular to the axis. Under the action of this force, the first hinge seat 100 is subjected to a force to open the door upward, which can offset part of the weight of the door body 30 and play a role in assisting the door opening; as the rotation direction of the hinge 10 increases, the force acting on the upper seat decreases. At the same time, as the angle increases, the torque of the door body 30 rotation decreases, and the force also decreases, thereby achieving multi-angle hovering of the door body 30; as the rotation angle of the hinge 10 further increases, the first stop portion 122 of the first hinge seat 100 contacts the second stop portion 224 of the second hinge seat 200, which prevents the door body 30 from continuing to open.

[0132] Some embodiments of the present application also provide an opening and closing device, including a box body 20 and a door body 30. The box body 20 has an opening 206 at one end. The door body 30 is hinged at the opening 206 of the box body 20 through the hinge 10 proposed in this application or any embodiment of the present application. The first rotation direction is the same as the rotation direction when the door body 30 is opened.

[0133] The opening and closing device may be a refrigerator, specifically a bedroom refrigerator with a top-opening door. The opening and closing device may also be another device that can be opened and closed, such as a dishwasher, a storage cabinet, etc. In the case where the opening and closing device is a bedroom refrigerator, the first hinged seat 100 is an upper seat connected to the door body 30, and the second hinged seat 200 is a lower seat connected to the cabinet 20 (i.e., the cabinet body). The refrigerator also includes a control component for controlling refrigeration.

[0134] Taking the bedroom refrigerator as an example, when the refrigerator is in the closed state, the top of the first matching structure 140 of the first hinge seat 100 (i.e., the first matching surface 142) contacts the top of the second matching structure 310 of the sliding member 300 built into the second hinge seat 200 (i.e., the second matching surface 312). At this time, the elastic member 400 (i.e., the spring) is in a compressed state, but the force of the spring cannot be transmitted to the rotation direction, and thus will not assist in opening the door. When the door body 30 of the refrigerator is opened by the user's hand, The inclined surface (i.e., the first curved surface 141) of the first matching structure 140 of the first hinged seat 100 contacts the inclined surface (i.e., the second curved surface 311) of the second matching structure 310, and the thrust of the spring acts on the first hinged seat 100 through the inclined surface (i.e., the curved surface), giving the door body 30 a force to assist in opening the door. At this time, the spring has the function of starting the door body 30 to assist in opening the door; in addition, the supporting force given to the door body 30 by the spring is balanced with the gravity and friction force of the door body 30, which can play the role of causing the door body 30 to hover in the open state.

[0135] The following two embodiments introduce two opening and closing device structures.

[0136] Example 1

[0137] like Figure 20 and Figure 21 As shown in a specific implementation, the outer wall of the box body 20 is provided with a mounting cavity 204 recessed toward the interior of the box body 20, the mounting cavity 204 is provided with a third opening 202 facing the opening 206 and a fourth opening 203 facing the outside of the box body 20, and a groove 105 is provided on the side of the mounting cavity 204 away from the third opening 202; the door body 30 is connected to the opening 206 of the box body 20 by a hinge 10, and the hinge 10 includes a second hinge 100 for rotational connection. The connecting seat 200 and the first hinge seat 100, the first hinge seat 100 is connected to the side wall of the door body 30, the hinge ends of the second hinge seat 200 and the first hinge seat 100 are both arranged in the installation cavity 204, and the hinge end of the second hinge seat 200 is facing away from the first hinge seat 100. The first sub-card plate 221 is embedded in the card groove 105, and the second sub-card plate 222 is connected to the outer wall of the door body 30.

[0138] The opening and closing device provided in the embodiment of the present application has a hinge 10 for connecting the door body 30 and the box body 20, which includes a second hinge seat 200 and a first hinge seat 100 that are rotatably connected. The first hinge seat 100 is connected to the outer surface of the door body 30, and the hinge ends of the second hinge seat 200 and the first hinge seat 100 are both arranged in the installation cavity 204. Since the installation cavity 204 is recessed from the outer wall of the box body 20 to the interior of the box body 20, the size of the hinge 10 protruding from the outside of the box body 20 can be reduced to a certain extent, so that the gap between the packaging box used for packaging the equipment and the equipment is reduced, thereby increasing the packing volume of the product and reducing the shipping cost of the product, and has good practicality.

[0139] The box body 20 may be provided with only one opening or with multiple openings. In the case of multiple openings, multiple door bodies 30 may also be provided. Some door bodies 30 may be connected to the corresponding openings of the box body 20 using the above-mentioned assembly method. For door bodies 30 that do not affect the packing volume, the assembly method in the relevant technology may also be adopted, and no limitation is made here.

[0140] The opening of the refrigerator is usually located at the top of the product. If the opening is set at other parts, it can be adjusted accordingly. I will not go into details here.

[0141] The first hinge seat 100 may include a first clamping plate 120, and two first mounting holes 121 may be provided on the first clamping plate 120. The first mounting holes 121 may be bolt holes. The first clamping plate 120 is connected to the door body 30 by bolts provided in the corresponding first mounting holes 121 to realize the assembly of the first hinge seat 100 with the door body 30.

[0142] The first mounting holes 121 of the embodiment of the present application can be arranged at intervals along the vertical direction, and only two bolts are needed to assemble the first clamping plate 120 to the door body 30. In other embodiments, the first mounting holes 121 can also be arranged at intervals along the horizontal direction, or more first mounting holes 121 can be provided, which is not limited here.

[0143] Combine Figure 1 、 Figure 3 as well as Figure 5 The hinged end of the first hinged seat 100 can be cylindrical, and it is integrally formed with the first clamping plate 120. The side of the first clamping plate 120 facing the door body 30 is flat, and the side of the first clamping plate 120 facing away from the door body 30 can be provided with multiple reinforcing ribs 160. The reinforcing ribs 160 can be arranged vertically, and the reinforcing ribs 160 can extend from the first clamping plate 120 to the circumferential surface of the hinged end of the first hinged seat 100 to improve the strength of the first hinged seat 100 and improve the service life of the first hinged seat 100.

[0144] The hinged end of the first hinge seat 100 is provided with a second accommodating cavity 130 . The second accommodating cavity 130 may be provided in a cylindrical shape. An axial end of the second accommodating cavity 130 facing the second hinge seat 200 is provided with an opening, ie, a second opening.

[0145] The hinged end of the second hinged base 200 may also be cylindrical. The first and second sub-cages 221 and 222 may be disposed oppositely on either side of the hinged end of the second hinged base 200. The first and second sub-cages 221 and 222 may be integrally formed with the hinged end of the second hinged base 200. The vertical dimension of the second sub-cage 222 may be larger than that of the first sub-cage 221 to facilitate assembly of the first and second sub-cages 221 and 222 within the mounting cavity 204. The second sub-cage 222 is provided with two second mounting holes 223, which may be bolt holes. The second sub-cage 222 is connected to the outer surface of the housing 20 via bolts disposed within the corresponding second mounting holes 223. The second mounting holes 223 may be oval in shape, which facilitates adjustment of the mounting position of the second hinged base 200 and facilitates assembly of the hinge 10 on the opening and closing device.

[0146] The second mounting holes 223 of the embodiment of the present application can be arranged at intervals along the horizontal direction, and only two bolts are needed to assemble and connect the second daughter card 222 to the box body 20. In other embodiments, the second mounting holes 223 can also be arranged at intervals along the horizontal direction, or more second mounting holes 223 can be provided, which is not limited here.

[0147] It should be noted that the first mounting hole 121 and the second mounting hole 223 in the embodiment of the present application are both countersunk holes to avoid the corresponding bolts protruding from the surface and affecting the packing volume of the product.

[0148] A plurality of reinforcing ribs 160 are provided on the side of the second sub-cage 222 facing away from the first sub-cage 221 (i.e., on the outside of the second sub-cage 222). The reinforcing ribs 160 may be arranged vertically and extend from the second sub-cage 222 to the circumference of the hinge end of the second hinge base 200 to increase the strength and service life of the second hinge base 200.

[0149] The hinged end of the second hinged seat 200 is provided with a first accommodating cavity 230, and the first accommodating cavity 230 can be arranged in a cylindrical shape. The first accommodating cavity 230 is open toward one axial end of the first hinged seat 100, that is, a first opening is provided. The second accommodating cavity 130 and the first accommodating cavity 230 are arranged opposite to each other, and the opposite ends of the two are open, and the opposite ends of the two are respectively pressed against the two ends of the groove 105.

[0150] Example 2

[0151] like Figures 1 to 19As shown, the main difference between the first embodiment and the second embodiment is that the connection structures of the hinge 10 and the box body 20 and the door body 30 are different.

[0152] Specifically, the first card board 120 can be provided with three first mounting holes 121, wherein two first mounting holes 121 are arranged at intervals and aligned along the first direction X, and another first mounting hole 121 is arranged on the side of the above two first mounting holes 121 close to the second sub-card board 222, that is, the three first mounting holes 121 can be arranged in a triangle in sequence.

[0153] The housing 20 has slots 207 at both ends of the slot 105. A raised strip 211 protrudes from the end surface of the first sub-clip 221 facing away from the first hinge seat 100. The slots 207 are provided at both ends of the slot 105. The first hinge seat 100 and the second hinge seat 200 are disposed within the mounting cavity 204, and the raised strips 211 are inserted into the slots 207 at the corresponding ends. The slots 207 and raised strips 211 cooperate to secure the first sub-clip 221 to the housing 20.

[0154] Furthermore, the end surface of the second hinge portion 210 facing away from the first hinge seat 100 is provided with an extension portion 212 integrally formed with the raised strip 211. During the rotation of the first hinge seat 100 relative to the second hinge seat 200, the raised strip 211 is susceptible to damage due to stress concentration. The provision of the extension portion 212 effectively extends the length of the raised strip 211, thereby increasing its strength. Actual testing has shown that the likelihood of damage to the raised strip 211 is significantly reduced.

[0155] It should be noted that a raised strip 211 may also be provided on the end surface of the first hinge portion 110 away from the second hinge portion 210 , and the raised strip 211 may also cooperate with the slot 207 at the corresponding end.

[0156] The above description is merely a preferred embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A hinge for an opening and closing device, wherein the opening and closing device comprises a box body and a door body, wherein the box body has an opening, and the door body covers the opening in an openable and closable manner, wherein: The outer wall of the box body is provided with an installation cavity recessed toward the interior of the box body, the installation cavity is provided with a third opening facing the opening, an end of the installation cavity away from the third opening is provided with a card groove, and the box body is further provided with a card slot at the end of the card groove, and the hinge includes: a first hinge seat, the first hinge seat comprising a first clamping plate and a first hinge portion, the first clamping plate being used to connect with the door body, the first hinge portion being disposed in the mounting cavity and having a first matching structure; The second hinge seat, the second hinge seat including a second card plate and a second hinge part, the second card plate is used to be connected to the box body, the second card plate includes a first sub-card plate, the second hinge part is arranged in the installation cavity, and has a first accommodating cavity extending along the first direction, one end of the first accommodating cavity has a first opening, the first sub-card plate is embedded in the card groove of the opening and closing device, the end of the second hinge part away from the first hinge seat is protruded with a raised strip, the raised strip is inserted into the card groove at the corresponding end, the card groove and the raised strip cooperate to realize the embedding and fixing of the first sub-card plate and the box body, and the end of the second hinge part away from the first hinge seat is further provided with an extension portion integrally formed with the raised strip; a sliding member disposed in the first accommodating cavity, the sliding member and the second hinge seat being relatively fixed in a circumferential direction of the first accommodating cavity, and the sliding member being capable of sliding along a first direction within the first accommodating cavity, the sliding member having a second mating structure, the second mating structure abutting against the first mating structure through the first opening; an elastic member disposed in the first accommodating cavity and located at an end of the sliding member away from the first matching structure, the elastic member applying a thrust to the sliding member to move the sliding member toward the first matching structure; The first mating structure has a first curved surface and a first mating surface, the second mating structure has a second curved surface and a second mating surface, the hinge has a first posture and a second posture, the first hinge seat can reciprocate relative to the second hinge seat around an axis extending in a first direction within a preset angle range, so that the first mating structure and the second mating structure slide relative to each other, so that the hinge switches between the first posture and the second posture, in the first posture, the first mating surface abuts against the second mating surface, and in the second posture, the first curved surface abuts against the second curved surface, so that the first hinge seat and the second hinge seat have a relative rotation force under the action of the thrust; The first hinge seat is provided with a first positioning portion, and the second hinge seat is provided with a second positioning portion. The second positioning portion can cooperate with the first positioning portion to position the first hinge seat and the second hinge seat at an initial installation angle.

2. The hinge according to claim 1, characterized in that The first curved surface and / or the second curved surface is a helical surface.

3. The hinge according to claim 1, wherein: The first curved surface extends along the first direction, the first mating surface is arranged at one end of the first curved surface close to the second mating structure, the second curved surface extends along the first direction, and the second mating surface is arranged at one end of the second curved surface close to the first mating structure.

4. The hinge according to claim 3, characterized in that The first mating surface and the second mating surface are both perpendicular to the first direction.

5. The hinge according to any one of claims 1 to 4, characterized in that: The first clamping plate and the first hinge portion are integrally constructed.

6. The hinge according to claim 5, characterized in that The second clamping plate and the second hinge portion are integrally constructed.

7. The hinge according to claim 6, characterized in that The first clamping plate is provided with a first mounting hole, and the first mounting hole is used to cooperate with the fixing member to fix the first clamping plate on the opening and closing device; And / or, the second card board also includes a second sub-card board, the first sub-card board and the second sub-card board are spaced apart, and the second sub-card board is provided with a second mounting hole, and the second mounting hole is used to cooperate with the fixing member to connect the second sub-card board to the opening and closing device.

8. The hinge according to claim 6, wherein: The first hinged part is provided with a second accommodating cavity, the second accommodating cavity is provided with a second opening, the second opening is opposite to and connected with the first opening, the first matching structure is provided in the second accommodating cavity, and the end of the first hinged part provided with the second opening is sealed and connected with the end of the second hinged part provided with the first opening.

9. The hinge according to claim 8, characterized in that The first mating surface and / or the second mating surface and / or the first curved surface and / or the second curved surface are provided with an oil storage groove.

10. The hinge according to claim 8, wherein A pressure relief hole is provided at one end of the second hinge portion away from the first opening, and the pressure relief hole is communicated with the first accommodating cavity; And / or, a pressure relief hole is provided at one end of the first hinge portion away from the second opening, and the pressure relief hole is communicated with the second accommodating cavity.

11. The hinge according to claim 7, wherein: A first stop portion is provided on the side of the first card plate close to the second hinge portion, and a second stop portion is provided on the side of the second sub-card plate close to the first hinge portion. The first stop portion and the second stop portion cooperate to limit the maximum angle of relative rotation between the first hinge seat and the second hinge portion.

12. The hinge according to any one of claims 1 to 4, characterized in that: The first positioning portion and the first hinge seat and / or the second positioning portion and the second hinge seat can be disconnected.

13. The hinge according to any one of claims 1 to 4, characterized in that: A first guide structure extending along the first direction is provided on the outer peripheral wall of the sliding member, and a second guide structure extending along the first direction is provided in the first accommodating cavity of the second hinged seat. The first guide structure cooperates with the second guide structure to relatively fix the sliding member and the second hinged seat in the circumferential direction of the first accommodating cavity, and to enable the sliding member to move along the first direction.

14. The hinge according to any one of claims 1 to 4, characterized in that: The first hinge seat, the second hinge seat and the sliding member are all made of hard plastic.

15. An opening and closing device, characterized in that: include: a box body having an opening; A door body is hinged at the opening of the box body through the hinge according to any one of claims 1 to 14.

16. The opening and closing device according to claim 15, characterized in that The opening and closing device is a refrigerator.

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