Hinge structure and refrigerator

Abstract

The hinge structure comprises a first hinge piece and a second hinge piece, the first hinge piece comprises a first base body and a connecting shaft which are connected, a wire passing hole is formed in the connecting shaft, and a first limiting part is arranged on the outer wall of the connecting shaft; the second hinge piece comprises a second base body and a connecting sleeve which are connected, the connecting sleeve is rotatably arranged on the connecting shaft in a sleeving mode, and a second limiting part is arranged on the outer wall of the connecting sleeve and used for abutting against the first limiting part in the rotating process of the second hinge piece so as to limit the rotating angle of the second hinge piece relative to the first hinge piece. According to the hinge structure, the cable is limited and protected in the cable passing hole, and the safety of the cable is guaranteed. Meanwhile, the cable is hidden in the hinge structure, so that the appearance of the household appliance is more concise and neat. In addition, the second limiting part can abut against the first limiting part, the situation that the box door collides with surrounding objects due to the fact that the rotation amplitude is too large is avoided, and the stability and safety of the household appliance are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, in particular to a hinge structure and a refrigerator. BACKGROUND

[0002] In modern life, many household appliances have a door body structure. For example, common refrigerators, microwave ovens, ovens, dishwashers, etc. Taking a refrigerator as an example, in order to meet the user's convenient operation and better use experience, some refrigerators are equipped with display operation panels, lighting and other electrical components on the door body. The normal work of these electrical components needs to be connected with the power supply or control system in the refrigerator body, which inevitably involves the cable connection problem between the door and the body.

[0003] The door and the body are not an integral structure, and there is relative movement between the two, especially the door will be frequently opened and closed in daily use. In this case, the cable needs to extend into the body after passing through the connection area between the door and the body. Due to the frequent opening and closing action of the door, the cable may be subjected to external forces such as pulling and bending during long-term use, which seriously affects its safety. Therefore, how to effectively protect the cable from the influence of the opening and closing action of the door is a problem to be solved in the current refrigerator design field. CONTENT OF THE UTILITY MODEL

[0004] The embodiments of the present application provide a hinge structure and a refrigerator, which can effectively protect the cable from the influence of the opening and closing action of the door and hide the cable to maintain the overall aesthetics of the refrigerator.

[0005] In order to achieve the above purpose, the first aspect of the embodiments of the present application provides a hinge structure, comprising:

[0006] A first hinge part comprising a first base body and a connecting shaft connected together, the connecting shaft is internally provided with a wire passing hole, and the outer wall of the connecting shaft is provided with a first limiting part; and

[0007] A second hinge part comprising a second base body and a connecting sleeve connected together, the connecting sleeve is rotatably sleeved on the connecting shaft, the outer wall of the connecting sleeve is provided with a second limiting part, and the second limiting part is used for abutting against the first limiting part during rotation of the second hinge part to limit the rotation angle of the second hinge part relative to the first hinge part.

[0008] The second aspect of the embodiments of the present application provides a refrigerator, comprising:

[0009] A body having a storage chamber;

[0010] A door for opening or closing the storage chamber; and

[0011] The first base body is connected with the cabinet, and the second base body is connected with the cabinet door.

[0012] In the hinge structure, the connecting shaft is internally provided with a wire passing hole, the wire passing hole allows the cable to pass from the cabinet door to the cabinet, and the cable is limited and protected in the wire passing hole during the opening and closing of the cabinet door, and is not exposed to the outside, thereby avoiding friction and collision with other objects, so that the possibility of the cable being pulled and bent is greatly reduced, and the safety of the cable is ensured. At the same time, since the cable is hidden inside the hinge structure, the messy cable cannot be seen from the outside, so that the appearance of the household appliance is more simple and neat, and the aesthetic appearance is greatly improved. In addition, the connecting shaft and the connecting sleeve are respectively provided with a first limiting portion and a second limiting portion, and the second limiting portion can abut against the first limiting portion during the rotation of the second hinge member relative to the first hinge member, so as to limit the rotation angle of the second hinge member, avoid the cabinet door from colliding with surrounding objects due to too large rotation amplitude, and improve the overall stability and use safety of the household appliance. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from the structures shown in the drawings without creative labor.

[0014] Figure 1 The structure schematic diagram of the refrigerator provided by the embodiment of the present application is shown in the figure.

[0015] Figure 2 The structure schematic diagram of the hinge structure provided by the embodiment of the present application is shown in the figure.

[0016] Figure 3 The structure schematic diagram of the hinge structure provided by the embodiment of the present application is shown in the figure.

[0017] Figure 4 The exploded view of the hinge structure provided by the embodiment of the present application is shown in the figure.

[0018] Figure 5 The structure schematic diagram of the first hinge member provided by the embodiment of the present application is shown in the figure.

[0019] Figure 6 The structure schematic diagram of the second hinge member provided by the embodiment of the present application is shown in the figure.

[0020] Figure 7 The structure schematic diagram of the first hinge member provided by the embodiment of the present application is shown in the figure.

[0021] Figure 8An internal structure diagram of a refrigerator provided by an embodiment of the present application is shown in the following figure.

[0022] Figure 9 An internal structure diagram of a door and a fan assembly provided by an embodiment of the present application is shown in the following figure.

[0023] Explanation of reference numerals:

[0024] 1, cabinet; 2, door; 3, hinge structure; 31, first hinge part; 32, second hinge part; 311, first base body; 312, connecting shaft; 3123, first limiting part; 10, wire passing hole; 321, second base body; 322, connecting sleeve; 3221, second limiting part; 20, first wire passing groove; 30, second wire passing groove; 33, wire buckle; 3121, first part; 3122, second part; 40, first limiting groove; 3221, limiting block; 401, first limiting surface; 402, second limiting surface; 403, third limiting surface; 50, second limiting groove; 3211, limiting arm; 501, fourth limiting surface; 502, fifth limiting surface; 60, avoiding groove; 34, rotating shaft; 4, fan assembly; 5, elastic part; 41, support; 42, fan; 100, storage chamber; 200, mounting cavity; 70, mounting hole.

[0025] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present application more clear, the following will further describe the embodiments of the present application in combination with the accompanying drawings.

[0027] The following description relates to the accompanying drawings, unless otherwise indicated, the same numerals in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0028] In the description of the present application, it should be understood that the terms "first", "second" and the like are used only for the purpose of description and should not be understood as indicating or implying relative importance. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise stated, "multiple" means two or more. "And / or", the association between the associated objects, means that there can be three kinds of relationships, for example, A and / or B, which can represent the existence of A alone, the existence of A and B at the same time, and the existence of B alone. The character " / " generally represents that the associated objects before and after are a kind of "or" relationship.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0030] In today's home life, there are a variety of household appliances, many of which have a door body as a structural component. For example, common refrigerators, microwave ovens, ovens, dishwashers, etc. The door body of these household appliances plays an important role in its overall function and use experience. Taking a refrigerator as an example, in order to meet the user's convenient operation and better use experience, some refrigerators are equipped with display operation panels, lighting and other electrical components on the door body. The normal work of these electrical components requires connection with the power supply and control system inside the refrigerator body, which inevitably involves the problem of cable connection between the door and the body.

[0031] The door and the body are not a one-piece structure, and there is relative motion between the two, especially the door will be frequently opened and closed in daily use. In this case, the cable needs to extend into the body after passing through the connection area between the door and the body. Due to the frequent opening and closing action of the door, the cable may be subjected to external forces such as pulling and bending during long-term use, which seriously affects its safety.

[0032] Therefore, the embodiments of the present application provide a hinge structure and a refrigerator, which can effectively protect the cable from the influence of the opening and closing action of the door, and hide the cable to maintain the overall aesthetics of the refrigerator.

[0033] Specifically, please refer to Figures 1 to 4 , Figure 1 the structural schematic diagram of the refrigerator provided by the present embodiment; Figure 2 the structural schematic diagram of the hinge structure provided by the present embodiment; Figure 3 the structural schematic diagram of the hinge structure provided by the present embodiment from another perspective; Figure 4 the exploded view of the hinge structure provided by the present embodiment.

[0034] The refrigerator of the embodiment includes a cabinet 1, a door 2, and a hinge structure 3. The cabinet 1, as the housing support structure of the whole refrigerator, can adopt a hollow structure of a square body. The cabinet 1 is made of high-strength material, such as stainless steel, and has good heat insulation performance and durability. The cabinet 1 is internally provided with a storage chamber 100, which can be a fresh-keeping chamber, a refrigeration chamber, a freezing chamber, or the like of the refrigerator. The storage chamber 100 has a space size determined according to the design capacity of the refrigerator, and has good heat preservation performance, with the four walls made of high-efficiency heat preservation material to effectively reduce the loss of cold quantity. The storage chamber 100 can be internally provided with shelves or partitions for placing articles, to facilitate the user to store different types of refrigeration articles in a classified manner.

[0035] The door 2 of the embodiment is used to open and close the storage chamber 100, and is connected with the cabinet 1 through the hinge structure 3. In order to meet the convenient operation of the user and better use experience, the door 2 is usually provided with electrical elements, such as a display operation panel and a fan assembly 4. The display operation panel can enable the user to intuitively view and adjust the operating parameters of the refrigerator, such as temperature setting and operating mode selection. The fan assembly 4 can increase the air cooling circulation in the refrigerator, so as to quickly balance the temperature and improve the endurance of the refrigerator. These electrical elements are connected with the power supply and control system inside the cabinet 1 through cables, and thus the cables need to be routed from the door 2 to the cabinet 1, and the cables are easily damaged in the opening and closing action of the door 2.

[0036] In order to effectively protect the cables from the opening and closing action of the door 2, the embodiment provides a wire passing structure in the hinge structure 3.

[0037] Specifically, as shown in Figure 2 The hinge structure 3 of the embodiment includes a first hinge piece 31 and a second hinge piece 32. The first hinge piece 31 includes a first base body 311 and a connecting shaft 312. The first base body 311 is the part of the hinge structure 3 connected with the cabinet 1, and the shape and structure of the first base body 311 can be set according to the structure of the cabinet 1. Exemplarily, the first base body 311 is plate-shaped, has a mounting surface attached to the surface of the cabinet 1, and has at least two mounting holes 70 on the mounting surface to be connected with the cabinet 1 through screws. This connection mode ensures that the first base body 311 will not be loose or displaced when subjected to external force during the opening and closing of the door 2, thereby ensuring the stability of the whole hinge structure 3.

[0038] The connecting shaft 312 is connected to the first base body 311 and can be integrally formed with the first base body 311 to ensure the stability between the two when subjected to force. As shown in Figure 4As shown, the connecting shaft 312 is internally provided with a wire passing hole 10, which is a key design point of the present application. The wire passing hole 10 can accommodate the cable of the electrical component to pass through, and the inner wall of the wire passing hole 10 is smooth and free of sharp corners, which can avoid friction and abrasion between the cable and the hole wall during the opening and closing of the cabinet door 2. As shown in the figure, the wire passing hole 10 is provided with a first limiting portion 3123 on the outer wall of the connecting shaft 312. The first limiting portion 3123 can be a groove or a protruding structure. The first limiting portion 3123 cooperates with the second limiting portion 3221 of the second hinge member 32 during the opening and closing of the cabinet door 2, and functions to limit the rotation angle. Figure 3

[0039] The second hinge member 32 of the present embodiment includes a second base body 321 and a connecting sleeve 322. The second base body 321 is the part of the hinge structure 3 connected to the cabinet door 2, and the shape and structure of the second base body 321 can be set according to the structure of the cabinet door 2. Exemplarily, the second base body 321 is plate-shaped, has a mounting surface that is attached to the surface of the cabinet door 2, and has at least two mounting holes 70 on the mounting surface for connection to the cabinet door 2 by screws. This connection mode ensures that the second base body 321 will not loosen or displace when subjected to external forces during the opening and closing of the cabinet door 2, thereby ensuring the stability of the entire hinge structure 3.

[0040] The connecting sleeve 322 is rotatably sleeved on the connecting shaft 312, and the connecting sleeve 322 is connected to the second base body 321 and can be integrally formed with the second base body 321, thereby forming a structure that can rotate relative to the second base body 321. There is a proper gap between the inner wall of the connecting sleeve 322 and the outer wall of the connecting shaft 312 to ensure that the connecting sleeve 322 can freely rotate on the connecting shaft 312, while the gap cannot be too large to affect the stability and precision of the hinge structure 3. The outer wall of the connecting sleeve 322 is provided with a second limiting portion 3221 that is adapted to the first limiting portion 3123. When the second hinge member 32 rotates relative to the first hinge member 31, the second limiting portion 3221 will abut against the first limiting portion 3123 at a specific angle, thereby limiting the rotation angle of the second hinge member 32. For example, the second limiting portion 3221 can be a protrusion that matches the groove of the first limiting portion 3123, or a stop block structure provided at a specific position.

[0041] ​In the process of frequent opening and closing of the door 2, the cable is restricted and protected in the through hole 10 in this embodiment, and will not be exposed to the external environment. In the traditional cable arrangement, the cable may swing freely in the gap between the door 2 and the cabinet 1, and is prone to friction and collision with surrounding objects (such as the edge of the cabinet 1, other components or external obstacles), which may cause the cable sheath to wear out and even the internal wires to break. The through hole 10 in this embodiment avoids the above situation, greatly reducing the possibility of the cable being pulled and bent, thereby ensuring the safety of the cable and prolonging the service life of the cable. At the same time, the cable is hidden inside the hinge structure 3, making the appearance of the refrigerator more simple and neat. In addition, the first limiting part 3123 of the connecting shaft 312 and the second limiting part 3221 of the connecting sleeve 322 play an important role in limiting the rotation angle during the opening and closing of the door 2. In actual use scenarios, if the door 2 has no rotation angle limit, it may be inadvertently opened too much (such as when the user pulls the door hard or when children are playing), which may cause the door 2 to collide with surrounding objects such as cabinets, walls, etc. not only may damage the door 2 itself, but also may damage the hinge structure 3 of the refrigerator, affecting its normal use. The first limiting part 3123 and the second limiting part 3221 cooperate to limit the further rotation of the door 2 when the door 2 is rotated to a certain angle, effectively avoiding the above problems, thereby improving the overall stability and safety of the appliance.

[0042] As shown in Figure 3 and Figure 4 In some embodiments, the first base body 311 of the first hinge part 31 is provided with a first wire slot 20 in addition to being connected to the cabinet 1. The first wire slot 20 is in communication with the through hole 10 inside the connecting shaft 312, forming a continuous channel for the cable from the hinge structure 3 to the cabinet 1. The width and depth of the first wire slot 20 can be determined according to the size and number of cables that need to pass through, so as to ensure that the cables can be placed smoothly without being too crowded or loose. The slot wall of the first wire slot 20 is smooth, reducing the friction when the cable moves therein.

[0043] The second base body 321 of the second hinge part 32 is also provided with a second wire slot 30. The second wire slot 30 is in communication with the inner cavity of the connecting sleeve 322, and together with the first wire slot 20 and the through hole 10 forms a complete cable channel.

[0044] When the second base body 321 is installed on the door 2, the slot of the second wire passing groove 30 faces the wall of the door 2 and communicates with the passage on the wall, ensuring that the cable can be smoothly extended from the electrical components in the door 2, and in turn pass through the passage on the wall of the door 2, the second wire passing groove 30 and the wire passing hole 10, so as to be connected to the hinge structure 3. The design parameters of the second wire passing groove 30 are similar to those of the first wire passing groove 20, meeting the passing and protection requirements of the cable.

[0045] When the first base body 311 is installed on the cabinet 1, the slot of the first wire passing groove 20 faces the wall of the cabinet 1 and communicates with the passage on the wall. The passage on the wall of the cabinet 1 can be used for the cable to pass in, and the design of the passage is matched with the first wire passing groove 20, so that the cable drawn from the electrical components (such as the display operation panel, the fan assembly 4, etc.) in the door 2 can smoothly pass through the first wire passing groove 20 and pass into the cabinet 1, so as to be connected to the power supply or control system in the cabinet 1. In this way, the transition of the cable from the hinge structure 3 to the cabinet 1 is smooth, and the cable is prevented from being damaged or disturbed by the external environment during the process.

[0046] In this embodiment, the complete cable passage formed by the first wire passing groove 20, the wire passing hole 10, the inner cavity of the connecting sleeve 322 and the second wire passing groove 30 provides protection for the cable. In the process of frequent opening and closing of the door 2, the cable is no longer easily pulled, bent or collided with surrounding objects as in the traditional wiring method. Whether it is the cable drawn from the electrical components in the door 2 or the part of the cable connected to the power supply and control system inside the cabinet 1, it passes in this closed and continuous passage, thereby greatly reducing the risk of damage to the cable and ensuring the integrity and functional stability of the cable.

[0047] Further, the inner wall of the first wire passing groove 20 and / or the second wire passing groove 30 is provided with a wire buckle 33. That is, in an embodiment, the inner wall of the first wire passing groove 20 is provided with a wire buckle 33. In an embodiment, the inner wall of the second wire passing groove 30 is provided with a wire buckle 33. In an embodiment, the inner wall of the first wire passing groove 20 and the second wire passing groove 30 is provided with a wire buckle 33. The wire buckle 33 can be a protrusion, a clip or a ring structure made of elastic plastic or rubber material. The wire buckle 33 of this embodiment is used to fix the cable to prevent unnecessary movement of the cable during use of the refrigerator due to opening and closing of the door 2, and to prevent the cable from being pulled. The wire buckle 33 of this embodiment can tightly fix the cable in the first wire passing groove 20 and the second wire passing groove 30, so that the cable remains neat and orderly, further improving the safety and stability of the cable.

[0048] Please refer to Figure 5 and Figure 6 , Figure 5 the structural schematic diagram of the first hinge part 31 provided in this embodiment; Figure 6A structure schematic view of the second hinge part 32 provided for the embodiment.

[0049] In some embodiments, the connecting shaft 312 is composed of a first part 3121 and a second part 3122 connected together. The first part 3121 is connected with the first base 311, and the second part 3122 is arranged in the connecting sleeve 322. The cooperation precision between the second part 3122 and the connecting sleeve 322 is high. There is a proper gap between the two to ensure that the connecting sleeve 322 can rotate smoothly on the second part 3122, and the gap is small enough to prevent the connecting sleeve 322 from shaking or deviating during rotation, thereby ensuring the stability of the opening and closing action of the box door 2.

[0050] The first limiting part 3123 of the embodiment is in the form of a first limiting groove 40, which is formed by the concave end surface of the first part 3121 facing the connecting sleeve 322. The shape and size of the first limiting groove 40 are related to the rotation range of the connecting sleeve 322 and the limiting block 3221. For example, the depth of the first limiting groove 40 is sufficient to accommodate the insertion of the limiting block 3221, and when the box door 2 is rotated to the limit position, the limiting block 3221 can be stably supported by the groove wall.

[0051] The second limiting part 3221 is a limiting block 3221 formed by the convex end surface of the connecting sleeve 322 facing the first part 3121. The limiting block 3221 protrudes outward from the surface of the connecting sleeve 322 and can be inserted into and rotated in the first limiting groove 40. The protruding height, length and width of the limiting block 3221 can be set according to the requirement of limiting the rotation angle of the box door 2.

[0052] Further, the inner wall of the first limiting groove 40 has a first limiting surface 401, a second limiting surface 402 and a third limiting surface 403. The first limiting surface 401 and the second limiting surface 402 are oppositely arranged and can respectively abut against the limiting block 3221 in the circumferential direction of the connecting shaft 312. The oppositely arranged manner of the first limiting surface 401 and the second limiting surface 402 can limit the circumferential rotation angle of the connecting sleeve 322 relative to the connecting shaft 312. For example, when the box door 2 is opened or closed to a certain angle, the limiting block 3221 will contact the first limiting surface 401 or the second limiting surface 402, thereby preventing the box door 2 from further rotating.

[0053] The third limiting surface 403 is connected with the first limiting surface 401 and the second limiting surface 402 respectively, and is used for abutting against the limiting block 3221 in the axial direction of the connecting shaft 312. The third limiting surface 403 further limits the limiting block 3221, and the third limiting surface 403, the first limiting surface 401 and the second limiting surface 402 jointly form a three-dimensional limiting space. During the opening and closing of the box door 2, the third limiting surface 403 can prevent the displacement of the limiting block 3221 in the axial direction, and ensure the correct position of the limiting block 3221 in the first limiting groove 40.

[0054] When the box door 2 is opened and closed, the second hinge part 32 rotates relative to the connecting shaft 312 of the first hinge part 31 through the connecting sleeve 322. Within the normal rotation range, the limiting block 3221 on the connecting sleeve 322 is free to rotate in the first limiting groove 40 of the first part 3121 of the connecting shaft 312, and does not contact any limiting surface of the first limiting groove 40. When the box door 2 is rotated to a preset maximum angle, the limiting block 3221 contacts the first limiting surface 401 or the second limiting surface 402 of the first limiting groove 40. Due to the blocking effect of the first limiting surface 401 and the second limiting surface 402 on the limiting block 3221 in the circumferential direction, the box door 2 cannot continue to rotate in this direction, thereby limiting the maximum opening angle of the box door 2. At the same time, the third limiting surface 403 limits the limiting block 3221 in the axial direction, further ensuring the stability and reliability of the angle limitation.

[0055] Please refer to Figure 6 and Figure 7 , Figure 7 the structural schematic diagram of the first hinge part 31 provided in the embodiment is shown in another view.

[0056] In some embodiments, the connecting shaft 312 is a key transmission component in the hinge structure 3, and in addition to the first limiting part 3123 related structure provided on the outer wall of the connecting shaft 312, a second limiting groove 50 is also provided on the end away from the first limiting part 3123. The shape and size of the second limiting groove 50 can be set according to the limiting arm 3211 to ensure accurate cooperation with the limiting arm 3211 during work.

[0057] The limiting arm 3211 is provided on the second base body 321 corresponding to the position of the second limiting groove 50. The limiting arm 3211 and the second base body 321 are an integral structure, thereby ensuring sufficient strength and rigidity. The shape and size of the limiting arm 3211 are matched with the second limiting groove 50, the limiting arm 3211 extends from the second base body 321 to the connecting shaft 312, and can extend into the second limiting groove 50.

[0058] Furthermore, the inner wall of the second limiting groove 50 has a fourth limiting surface 501 and a fifth limiting surface 502 that are interconnected and perpendicular to each other. The fourth limiting surface 501 abuts against the limiting arm 3211 in the circumferential direction of the connecting shaft 312, thereby limiting the circumferential movement of the limiting arm 3211 during the rotation of the door 2, and thus further controlling the rotation angle of the door 2. The fifth limiting surface 502 abuts against the limiting arm 3211 in the axial direction of the connecting shaft 312. Specifically, the fifth limiting surface 502 and the aforementioned third limiting surface 403 together constitute the axial limiting structure of the connecting sleeve 322. This axial limiting design with double limiting surfaces is a key innovation of this application. The presence of the fifth limiting surface 502 ensures that during the opening and closing of the door 2, under any circumstances, especially when subjected to a large rotational torque, the connecting sleeve 322 will not be displaced axially relative to the connecting shaft 312 due to force, further ensuring the stability and reliability of the angle limiting of the entire hinge structure 3.

[0059] During the normal opening and closing of the door 2, when the second hinge 32 rotates around the connecting shaft 312, the limiting arm 3211 moves within the second limiting groove 50. Before reaching the limit angle, the limiting arm 3211 does not contact the fourth limiting surface 501 of the second limiting groove 50, and the door 2 can rotate freely. When the door 2 rotates close to the limit angle, the limiting arm 3211 begins to gradually approach the fourth limiting surface 501 of the second limiting groove 50. When the limit angle is reached, the limiting arm 3211 contacts the fourth limiting surface 501 of the second limiting groove 50. The fourth limiting surface 501 restricts the further circumferential movement of the limiting arm 3211, thereby preventing excessive circumferential rotation of the door 2. Simultaneously, the fifth limiting surface 502 and the third limiting surface 403 work together to limit the limiting arm 3211 and the connecting sleeve 322 in the axial direction, ensuring the stability of the entire structure when subjected to rotational torque and preventing displacement or loosening due to force. The above-mentioned circumferential and axial synergistic limiting effect ensures that the rotation angle of the door 2 is controlled within a safe range.

[0060] like Figure 7 As shown, in addition to the second limiting groove 50 mentioned above, a clearance groove 60 is also provided on the outer wall of the connecting shaft 312. The clearance groove 60 is located on one side of and communicates with the second limiting groove 50, and is used to avoid the limiting arm 3211 during the installation of the second hinge member 32 on the first hinge member 31. The width of the clearance groove 60 is slightly larger than the width of the limiting arm 3211 to ensure that the limiting arm 3211 can be smoothly inserted; the length of the clearance groove 60 is sufficient to fully accommodate the limiting arm 3211 during installation, so that the limiting arm 3211 will not interfere with other parts of the connecting shaft 312 in the initial stage of installation. At the same time, the transition between the clearance groove 60 and the second limiting groove 50 is smooth to ensure that the limiting arm 3211 can move smoothly from the clearance groove 60 to the second limiting groove 50 during installation.

[0061] As mentioned earlier, the inner wall of the second limiting groove 50 has a fourth limiting surface 501 and a fifth limiting surface 502, which are used to limit the limiting arm 3211 circumferentially and axially during the use of the door 2. However, when installing the second hinge component 32, the second limiting groove 50 works in conjunction with the clearance groove 60. Specifically, when installing the second hinge component 32 onto the first hinge component 31, the limiting arm 3211 must first be aligned with the clearance groove 60 on the connecting shaft 312. Since the width and length of the clearance groove 60 are sufficient to accommodate the limiting arm 3211, the operator can easily place the limiting arm 3211 into the clearance groove 60. At this time, in the axial direction of the connecting shaft 312, the connecting sleeve 322 can smoothly approach the connecting shaft 312, ready to be fitted onto the connecting shaft 312. During the process of fitting the connecting sleeve 322 axially onto the connecting shaft 312, the limiting arm 3211 gradually exits the clearance groove 60. After the connecting sleeve 322 is fully inserted into the connecting shaft 312, the limiting arm 3211 is completely retracted from the clearance groove 60 and is now in a position where it can enter the second limiting groove 50. Next, by rotating the connecting sleeve 322 (i.e., the second hinge member 32) by a certain angle, the limiting arm 3211 extends into the second limiting groove 50. Once the limiting arm 3211 is in the second limiting groove 50, the entire second hinge member 32 is accurately mounted on the first hinge member 31. At this time, due to the combined limiting effect of the fifth limiting surface 502 of the second limiting groove 50 and the third limiting surface 403 of the first limiting groove 40, the second hinge member 32 will not detach from the first hinge member 31.

[0062] like Figure 4 As shown, in some embodiments, the hinge structure 3 further includes a pivot 34. One end of the pivot 34 passes through the wire hole 10 of the connecting shaft 312 and is connected to the connecting shaft 312. The other end of the pivot 34 is connected to the connecting sleeve 322. The length of the pivot 34 can be determined based on the distance between the connecting shaft 312 and the connecting sleeve 322; the diameter of the pivot 34 can be determined based on the torque and shear force it withstands, ensuring sufficient strength to maintain the stability of the structure. The presence of the pivot 34 ensures that the door 2 has a stable axis of rotation during opening and closing, and there will be no shaking or offset regardless of whether the door 2 opens slowly or closes quickly.

[0063] In this embodiment, the cable passage hole 10 can both accommodate the cable, ensuring its safety during the opening and closing of the door 2, and allow the rotating shaft 34 to pass through it. An appropriate distance is maintained between the inner wall of the cable passage hole 10 and the outer wall of the rotating shaft 34, ensuring that the rotating shaft 34 can rotate freely within the cable passage hole 10 while allowing the cable to pass through smoothly.

[0064] The refrigerator of the embodiment can be a mobile refrigerator, and the energy storage power supply capacity of the mobile refrigerator is generally rated. In order to improve the endurance of the mobile refrigerator, the refrigerator of the embodiment further comprises a fan assembly 4 for accelerating the air cooling circulation in the refrigerator.

[0065] Specifically, refer to Figure 8 and Figure 9 , Figure 8 the internal structure diagram of the refrigerator provided by the embodiment; Figure 9 the internal structure diagram of the box door 2 and the fan assembly 4 provided by the embodiment.

[0066] The inner wall surface of the box door 2 is provided with a mounting cavity 200, and the opening of the mounting cavity 200 faces the storage compartment 100. The shape and size of the mounting cavity 200 are matched with the fan assembly 4, so as to provide a stable mounting position for the fan assembly 4.

[0067] The fan assembly 4 is mounted in the mounting cavity 200 of the box door 2, and part of the fan assembly 4 protrudes out of the opening of the mounting cavity 200. The fan assembly 4 can be composed of a low-power motor and a small-thickness fan blade, which can provide stable and continuous airflow while reducing the weight of the fan assembly 4. When the fan assembly 4 starts to work, the fan assembly 4 blows out airflow towards the storage compartment 100, and the blown-out airflow can form a full-range air cooling circulation in the storage compartment 100. After the airflow is blown out from the fan assembly 4, it will quickly spread in the storage compartment 100 and take away the heat at each position in the storage compartment 100. For example, the airflow will flow along the inner wall of the storage compartment 100, pass through the food shelf, and bypass the stored goods, so that the temperature difference that may exist in the whole storage compartment 100 is quickly reduced, and the temperature is quickly balanced. Compared with the traditional natural convection method, the cold quantity can be more effectively and uniformly distributed in every corner of the storage compartment 100.

[0068] In the traditional mobile refrigerator, when the user puts in new goods or frequently opens the box door 2, the temperature of the storage compartment 100 will fluctuate greatly, and the compressor needs to work for a long time to restore the set temperature. In the embodiment, due to the effect of the fan assembly 4, the temperature fluctuation can be adjusted in a short time, thereby reducing the working time of the compressor. The significant reduction of the working time of the compressor reduces the energy consumption of the refrigerator, and further greatly improves the endurance of the refrigerator. For the mobile refrigerator, better endurance means that the user does not need to worry about the problem of insufficient power of the refrigerator frequently in the mobile use scene such as outdoor travel and camping, and can keep the refrigerated goods at a suitable temperature for a longer time, which provides great convenience for the user.

[0069] To further accelerate the temperature of the storage chamber 100 to reach a balanced state, the opening of the mounting cavity 200 of the present embodiment is vertically upward, and the box door 2 is located at the top of the box body 1. In this way, the airflow generated by the fan assembly 4 blows from above to the bottom of the storage chamber 100. Since hot air is relatively light and will naturally rise, and cold air is relatively heavy and will naturally sink, the airflow blown from above by the fan assembly 4 can conform to this natural convection rule and more effectively push the air circulation in the storage chamber 100. Compared with the case of blowing horizontally, this airflow from top to bottom can bring the cold air from the top to the bottom more quickly, making the temperature in the storage chamber 100 more uniform, accelerating the speed of air cooling circulation, thereby further reducing the time required for temperature balance, reducing the working time and energy consumption of the compressor, and improving the endurance of the refrigerator.

[0070] In addition, the fan assembly 4 of the present embodiment partially extends out of the opening of the mounting cavity 200 of the box door 2. Compared with the conventional way of completely embedding the fan assembly 4 in the box door 2, the present embodiment effectively reduces the thickness of the box door 2, and the reduction of the thickness of the box door 2 increases the refrigeration space without affecting the overall structural strength and function of the refrigerator. In this way, the user can store more food or other items that need to be refrigerated, improving the practicality and user experience of the mobile refrigerator.

[0071] In some embodiments, the fan assembly 4 is movably connected with the box door 2 and can extend out of the opening towards the storage chamber 100 and retract into the mounting cavity 200 from the opening. Specifically, the fan assembly 4 includes a bracket 41 and a fan 42 connected to the bracket 41, and the bracket 41 is movably connected with the box door 2 in the mounting cavity 200. The fan 42 is connected and fixed to the bracket 41, which can be screw connection or buckle connection, for example.

[0072] The fan assembly 4 and the box door 2 can be connected by the following movable connection mode: in one embodiment, the fan assembly 4 and the box door 2 are connected by guide rail and sliding block. Sliding blocks are provided on both sides of the bracket 41, and guide rails are provided on the corresponding side walls of the mounting cavity 200, extending towards the storage chamber 100. The sliding blocks and the guide rails cooperate with each other to enable the bracket 41 to slide along the guide rails within a certain range, thereby realizing the extension and retraction of the fan assembly 4. This connection mode can ensure the stability of the movement of the fan assembly 4 and can withstand a certain lateral force to prevent the fan assembly 4 from deviating during movement. In another embodiment, the fan assembly 4 and the box door 2 are connected by a telescopic sleeve. A telescopic sleeve structure is provided between the bracket 41 and the wall of the mounting cavity 200. The inner cylinder and the outer cylinder of the sleeve are connected with the bracket 41 and the wall of the mounting cavity 200 respectively, and the inner cylinder can freely extend and retract in the outer cylinder, thereby realizing the extension and retraction movement of the fan assembly 4. This connection mode can provide better stability and can adapt to different telescopic length requirements.

[0073] Further, the mobile refrigerator further comprises an elastic member 5, one end of which is connected with the bracket 41 and the other end of which abuts against the bottom wall of the installation cavity 200. The elastic member 5 plays a role of assisting the fan assembly 4 to extend and reset in the embodiment. The elastic member 5 can be a spring (such as a coil spring or a leaf spring) or a rubber element with elastic recovery capability, etc.

[0074] When the fan assembly 4 is retracted into the installation cavity 200, the elastic member 5 is compressed; after the external force disappears, the elastic recovery force of the elastic member 5 pushes the fan assembly 4 to extend towards the storage compartment 100 and restores to the initial position. Alternatively, four elastic members 5 are provided, which are arranged at the bottom of the bracket 41 in a spaced manner to provide more stable elastic force and support.

[0075] In the embodiment, the fan assembly 4 can extend into the installation cavity 200 from the opening towards the storage compartment 100 and retract into the installation cavity 200 from the opening towards the installation cavity 200. When it is needed to open or close the door 2 or adjust the position of the articles in the storage compartment 100, the conventional fixed-position fan 42 can collide with the articles, resulting in damage to the articles or the fan 42. However, the fan assembly 4 in the embodiment can avoid collision by retracting into the installation cavity 200 when encountering an obstacle or approaching the articles in the storage compartment 100. For example, when the user places a bottle in the storage compartment 100, the fan assembly 4 retracts when it just contacts the bottle, protecting the bottle and the fan assembly 4.

[0076] The same or similar reference numerals in the drawings of the embodiment correspond to the same or similar components; in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationships in the drawings are only used for exemplary illustration and cannot be understood as a limitation on the present application, and the specific meanings of the above terms can be understood by those skilled in the art according to the specific circumstances.

[0077] The above is only a preferred embodiment of the present application and does not limit the present application, and any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A hinge structure, characterized by, The hinge structure comprises: a first hinge part comprising a first base body and a connecting shaft connected to each other, the connecting shaft is internally provided with a wire passing hole, and an outer wall of the connecting shaft is provided with a first limiting part; and a second hinge part comprising a second base body and a connecting sleeve connected to each other, the connecting sleeve is rotatably sleeved on the connecting shaft, an outer wall of the connecting sleeve is provided with a second limiting part, and the second limiting part is used for abutting against the first limiting part during rotation of the second hinge part to limit a rotation angle of the second hinge part relative to the first hinge part.

2. The hinge structure according to claim 1, characterized in that The first base body is provided with a first wire passing groove, the first wire passing groove is communicated with the wire passing hole, the second base body is provided with a second wire passing groove, the second wire passing groove is communicated with an inner cavity of the connecting sleeve, and the first wire passing groove, the wire passing hole, the inner cavity of the connecting sleeve and the second wire passing groove are sequentially communicated.

3. The hinge structure according to claim 2, characterized in that An inner wall of the first wire passing groove and / or the second wire passing groove is provided with a wire buckle.

4. The hinge structure according to any one of claims 1 to 3, characterized in that The connecting shaft comprises a first part and a second part connected to each other, the first part is connected to the first base body, and the second part penetrates through the connecting sleeve; the first limiting part comprises a first limiting groove, the first limiting groove is formed by internally recessing an end face of the first part facing the connecting sleeve, the second limiting part comprises a limiting block, the limiting block is formed by externally protruding an end face of the connecting sleeve facing the first part, and the limiting block extends into the first limiting groove.

5. The hinge structure according to claim 4, characterized in that An inner wall of the first limiting groove has a first limiting face, a second limiting face and a third limiting face, the first limiting face and the second limiting face are oppositely arranged and used for respectively abutting against the limiting block in a circumferential direction of the connecting shaft, and the third limiting face respectively connects the first limiting face and the second limiting face and is used for abutting against the limiting block in an axial direction of the connecting shaft.

6. The hinge structure according to claim 1, wherein An outer wall of the connecting shaft is further provided with a second limiting groove, the second limiting groove is arranged at one end of the connecting shaft away from the first limiting part, the second base body is provided with a limiting arm at a position corresponding to the second limiting groove, and the limiting arm is used for abutting against an inner wall of the second limiting groove during rotation of the second hinge part.

7. The hinge structure according to claim 6, characterized in that An inner wall of the second limiting groove has a fourth limiting face and a fifth limiting face connected to each other and perpendicular to each other, the fourth limiting face is used for abutting against the limiting arm in the circumferential direction of the connecting shaft, and the fifth limiting face is used for abutting against the limiting arm in the axial direction of the connecting shaft.

8. The hinge structure according to claim 7, characterized in that The outer wall of the connecting shaft is further provided with an avoiding groove, the avoiding groove is located at one side of the second limiting groove and is communicated with the second limiting groove, and the avoiding groove is used for avoiding the limiting arm.

9. The hinge structure according to claim 1, wherein The hinge structure further comprises a rotating shaft, one end of the rotating shaft penetrates through the wire passing hole and is connected to the connecting shaft, and the other end of the rotating shaft is connected to the connecting sleeve.

10. A refrigerator characterized by comprising: The hinge structure comprises: a box body having a storage chamber; a box door used for opening or closing the storage chamber; and the hinge structure according to any one of claims 1 to 9, the first base body is connected to the box body, and the second base body is connected to the box door.

11. The refrigerator according to claim 10, characterized in that, An inner wall surface of the box door is provided with a mounting cavity with an opening facing the storage chamber, a fan assembly is mounted in the mounting cavity, and the fan assembly partially extends out of the opening of the mounting cavity.

12. The refrigerator according to claim 11, characterized in that, The fan assembly is movably connected with the box door and can be extended out of the opening towards the storage chamber and retracted into the opening towards the mounting cavity.

13. The refrigerator according to claim 12, characterized in that, The fan assembly comprises a bracket and a fan connected with the bracket, and the bracket is movably connected with the box door in the mounting cavity.

Images