Hinge mechanism and refrigeration equipment

Abstract

The utility model provides a hinge mechanism and refrigeration equipment, the hinge mechanism is used for the refrigeration equipment, the refrigeration equipment comprises a box body and a door body, the hinge mechanism comprises a first hinge seat, a second hinge seat and a third hinge seat, the first hinge seat is used for being arranged on one of the box body and the door body, and the first hinge seat is provided with a first sliding groove and a second sliding groove which are oppositely arranged in the first direction; the second hinge base is used for being arranged on the other one of the refrigerator body and the door body, and the second hinge base is provided with a third sliding groove and a fourth sliding groove which are oppositely arranged in the first direction; the hinge body comprises a first connecting rod, a third connecting rod and a second connecting rod, one end of the first connecting rod is slidably arranged in the first sliding groove, and the other end of the first connecting rod is rotatably arranged on the second hinge base; one end of the second connecting rod is slidably arranged in the second chute, and the other end is rotatably arranged on the second hinge seat; one end of the third connecting rod is rotationally arranged on the first hinge base, and the other end of the third connecting rod is slidably arranged in the third sliding groove and the fourth sliding groove.

Description

Technical Field

[0001] The present application relates to the technical field of refrigeration equipment, and in particular to a hinge mechanism and refrigeration equipment. Background Art

[0002] In existing refrigeration equipment, the door body and the box body are generally connected by a hinge mechanism so that the door body can be opened or closed relative to the box body. However, the hinge mechanism is prone to jamming, which causes the door body to be unable to open or close smoothly, thereby reducing the user experience. Therefore, how to provide a hinge mechanism and refrigeration equipment to allow the door body to open or close smoothly is a technical problem that needs to be urgently solved in this field. Utility Model Content

[0003] In view of the above problems, the present application provides a hinge mechanism and a refrigeration device to solve the technical problem that the hinge mechanism in the prior art is prone to getting stuck.

[0004] In order to solve the above technical problems, the technical solution adopted in this application is as follows:

[0005] In the first aspect, the present application provides a hinge mechanism for a refrigeration device, the refrigeration device includes a box body and a door body, the hinge mechanism includes: a first hinge seat, used to be set on one of the box body and the door body, the first hinge seat has a first slide groove and a second slide groove arranged opposite to each other in a first direction; a second hinge seat, used to be set on the other of the box body and the door body, the second hinge seat has a third slide groove and a fourth slide groove arranged opposite to each other in the first direction; a hinge body, including a first connecting rod, a third connecting rod and a second connecting rod arranged in sequence in the first direction and rotatably connected by a first rotating shaft, wherein one end of the first connecting rod is slidably set in the first slide groove, and the other end is rotatably set in the second hinge seat; one end of the second connecting rod is slidably set in the second slide groove, and the other end is rotatably set in the second hinge seat; one end of the third connecting rod is rotatably set in the first hinge seat, and the other end is slidably set in the third slide groove and the fourth slide groove.

[0006] Among them, the first slide slot and the second slide slot both have a first end and a second end; the third slide slot and the fourth slide slot both have a third end and a fourth end arranged opposite to each other; one end of the first connecting rod and one end of the second connecting rod respectively slide to the corresponding first end, and when the other end of the third connecting rod slides to the third end, the door body is in a closed state relative to the box body; one end of the first connecting rod and one end of the second connecting rod respectively slide to the corresponding second end, and when the other end of the third connecting rod slides to the fourth end, the door body opens to a maximum angle relative to the box body, and the maximum angle is greater than or equal to 180°.

[0007] Among them, the first connecting rod and the second connecting rod are arranged opposite to each other in the first direction, and the projection of the first connecting rod toward the second connecting rod at least partially falls on the third connecting rod; the projection of the first connecting rod on the third connecting rod has a first axial hole corresponding to the position of the first connecting rod, and has a third axial hole corresponding to the position of the third connecting rod, the second connecting rod has a second axial hole adapted to the first axial hole and the third axial hole, and the first rotating axis passes through the first axial hole, the third axial hole and the second axial hole in sequence to rotationally connect the first connecting rod, the third connecting rod and the second connecting rod.

[0008] Among them, the first hinge seat includes a first substrate, a mounting plate and a second substrate connected in sequence, wherein the first substrate and the second substrate are arranged opposite to each other in the first direction, the first slide groove is opened on the first substrate, the second slide groove is opened on the second substrate, one end of the third connecting rod is rotatably set on the side of the first substrate facing the second substrate and / or the side of the second substrate facing the first substrate, and the mounting plate is used to set the first hinge seat on one of the box body and the door body.

[0009] Among them, the first ends of the first slide groove and the second slide groove are close to the mounting plate, and the second end is located on the side of the first end away from the mounting plate; the first hinge seat has a first side and a second side relative to each other in a second direction, the second direction is perpendicular to the first direction, and the first slide groove and the second slide groove are arc-shaped grooves protruding from the corresponding first end and the second end toward the direction of the first side.

[0010] The first substrate, the mounting plate and the second substrate are arranged to form a first accommodating groove, and the first accommodating groove is used to accommodate at least a part of the hinge body and at least a part of the second hinge seat.

[0011] Among them, the first substrate is formed with a locking portion, and the locking portion is located on the first side; the hinge mechanism also includes a self-locking component, and the self-locking component is used to be arranged on the other of the box body and the door body, and a locking portion is formed at one end of the self-locking component, and the locking portion is used to engage with the locking portion when the door body is in a closed state relative to the box body, so as to lock the door body.

[0012] Wherein, the second hinge seat has a third side and a fourth side arranged opposite to each other; when the door body is in a closed state relative to the box body, the third side is close to the second side of the first hinge seat, and the fourth side is close to the first side of the first hinge seat, and the third sliding groove and the fourth sliding groove extend obliquely relative to the second direction.

[0013] Among them, the other ends of the first connecting rod and the second connecting rod are rotatably set on the third side of the second hinge seat, and the fourth side of the second hinge seat has a first through hole; a first fixing column is provided on the other side of the self-locking member, and the first fixing column is used to be embedded in the other of the box body and the door body, and the first fixing column has a second through hole matching with the first through hole, and the first through hole and the second through hole are used to cooperate with the fixing member to set the second hinge seat on the self-locking member.

[0014] Among them, the second hinge seat includes a first base plate, a connecting plate and a second base plate connected in sequence, the first base plate, the connecting plate and the second base plate are surrounded to form a second accommodating groove, the third slide groove is opened on the first base plate, the fourth slide groove is opened on the second base plate, and the other end of the third connecting rod extends into the second accommodating groove and is slidably arranged in the third slide groove and the fourth slide groove.

[0015] The other end of the first connecting rod is rotatably disposed on a side of the first bottom plate facing away from the second bottom plate, and the other end of the second connecting rod is rotatably disposed on a side of the second bottom plate facing away from the first bottom plate.

[0016] In the second aspect, the present application also provides a refrigeration device, including: the hinge mechanism as described above; a box body, including a top wall and a bottom wall arranged opposite to each other, the first direction being the arrangement direction of the top wall and the bottom wall; and a door body, rotatably arranged on the box body through the hinge mechanism.

[0017] Different from the prior art, the beneficial effects of the embodiments of the present application are as follows: the present application provides a hinge mechanism and a refrigeration device, the hinge mechanism is used for the refrigeration device, the refrigeration device includes a box body and a door body, the hinge mechanism includes a first hinge seat, a second hinge seat and a hinge body, the first hinge seat is used to be set in one of the box body and the door body, the first hinge seat has a first slide groove and a second slide groove that are relatively set in the first direction; the second hinge seat is used to be set in the other of the box body and the door body, the second hinge seat has a third slide groove and a fourth slide groove that are relatively set in the first direction; the hinge body includes a first connecting rod, a third connecting rod and a second connecting rod that are arranged in sequence in the first direction and are rotatably connected by a first rotating shaft, wherein one end of the first connecting rod is slidably set in the first slide groove, and the other end is rotatably set in the second hinge seat; one end of the second connecting rod is slidably set in the second slide groove, and the other end is rotatably set in the second hinge seat; one end of the third connecting rod is rotatably set in the first hinge seat, and the other end is slidably set in the third slide groove and the fourth slide groove. By arranging the first connecting rod, the third connecting rod and the second connecting rod of the hinge body in sequence in the first direction YY, and rotatably connected through the first rotating shaft, and at the same time making one end of the first connecting rod and the second connecting rod slide in the first sliding groove and the second sliding groove of the first hinge seat respectively, and the other end rotates to the second hinge seat, one end of the third connecting rod is rotated to the first hinge seat, and the other end slides in the third sliding groove and the fourth sliding groove of the second hinge seat, the hinge mechanism moves more smoothly, and can reduce the jamming phenomenon of the hinge mechanism when the door body is opened or closed relative to the box body, so that the door body can be opened or closed smoothly. At the same time, the first hinge seat, the second hinge seat and the first connecting rod, the second connecting rod and the third connecting rod in the hinge body cooperate with each other to improve the strength of the hinge mechanism, and further improve the movement smoothness and stability of the hinge mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0019] Figure 1 It is a structural schematic diagram of an implementation mode of the hinge mechanism provided in the present application;

[0020] Figure 2 It is a structural schematic diagram of an implementation mode of the refrigeration equipment provided by the present application;

[0021] Figure 3 yes Figure 2 Enlarged view of part A in the middle;

[0022] Figure 4is a top view of an implementation of the refrigeration device provided by the present application;

[0023] Figure 5 yes Figure 4 Enlarged view of middle part B;

[0024] Figure 6 is a top view of another embodiment of the refrigeration device provided by the present application;

[0025] Figure 7 yes Figure 6 Enlarged view of middle C;

[0026] Figure 8 It is a schematic diagram of the exploded structure of a part of the structure of the hinge body of the hinge mechanism provided in the present application;

[0027] Fig. 9 It is a structural schematic diagram of the first hinge seat of the hinge mechanism provided in this application;

[0028] Fig.10 is a structural schematic diagram of another embodiment of the hinge mechanism provided in the present application;

[0029] Fig.11 It is a structural schematic diagram of the self-locking member of the hinge mechanism provided in the present application;

[0030] Fig.12 It is a structural schematic diagram of the second hinge seat of the hinge mechanism provided in this application. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It will be appreciated that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some but not all structures related to the present application are shown in the drawings. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the art without making creative work are within the scope of protection of the present application.

[0032] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0033] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0036] See also Figures 1 to 3 , Figure 1 It is a structural schematic diagram of an implementation mode of the hinge mechanism provided in the present application; Figure 2 It is a structural schematic diagram of an implementation mode of the refrigeration equipment provided by the present application;

[0037] Figure 3 yes Figure 2 Enlarged view of part A in the middle. The present application provides a hinge mechanism 100, which can be applied to a refrigeration device 1000. In terms of installation method, the refrigeration device 1000 can be a built-in refrigerator, a cross-door refrigerator, a French refrigerator, or a non-built-in ordinary refrigerator, but is not limited to this; in terms of refrigeration method, the refrigeration device 1000 can be an air-cooled refrigerator, a direct-cooled refrigerator, or an air-direct-cooled refrigerator. It should be noted that the hinge mechanism 100 in this embodiment is not only applicable to the refrigeration device 1000, but also to other application scenarios, such as microwave ovens, electric ovens, disinfection cabinets, cabinets, wardrobes, wine cabinets, etc., but is not limited to this.

[0038] The refrigeration device 1000 includes a box body 200 and a door body 300. The hinge mechanism 100 includes a first hinge seat 110 and a second hinge seat 120. The first hinge seat 110 is used to be set in one of the box body 200 and the door body 300. The first hinge seat 110 has a first slide groove 110a and a second slide groove 110b that are relatively arranged in the first direction YY. The first hinge seat 110 can be set in one of the box body 200 and the door body 300 by plugging, clamping, bolting, magnetic adsorption connection, and bonding. The second hinge seat 120 is used to be set in the other of the box body 200 and the door body 300, and the second hinge seat 120 has a third slide groove 120a and a fourth slide groove 120b that are relatively arranged in the first direction YY. The second hinge seat 120 can be set in the other of the box body 200 and the door body 300 by plugging, clamping, bolting, magnetic adsorption connection, and bonding. The box body 200 has a top wall 201 and a bottom wall 202 that are arranged opposite to each other in a direction from the top to the bottom of the refrigeration device 1000. The first direction YY is the arrangement direction of the top wall 201 and the bottom wall 202.

[0039] The hinge body 130 includes a first connecting rod 131, a third connecting rod 133, and a second connecting rod 132 which are arranged in sequence in the first direction YY and are rotatably connected through a first rotating shaft 134. One end of the first connecting rod 131 is slidably disposed in the first sliding groove 110a. The first sliding groove 110a provides a movement path for one end of the first connecting rod 131. The other end of the first connecting rod 131 is rotatably disposed in the second hinge seat 120. One end of the second connecting rod 132 is slidably disposed in the second sliding groove 110b. The second sliding groove 110b provides a movement path for one end of the second connecting rod 132. The other end of the second connecting rod 132 is rotatably disposed in the second hinge seat 120. One end of the third connecting rod 133 is rotatably disposed in the first hinge seat 110. The other end of the third connecting rod 133 is slidably disposed in the third sliding groove 120a and the fourth sliding groove 120b. The third sliding groove 120a and the fourth sliding groove 120b provide a movement path for the other end of the third connecting rod 133.

[0040] The other ends of the first link 131 and the second link 132 are both formed with mounting points on the second hinge seat 120, and one end of the third link 133 is formed with a mounting point on the first hinge seat 110, which enhances the structural strength of the hinge body 130, thereby improving the strength of the hinge mechanism 100. Moreover, the first link 131, the third link 133, and the second link 132 are also rotatably connected through the first rotating shaft 134, so that a connection relationship is established between the first link 131, the third link 133, and the second link 132, further improving the strength of the hinge mechanism 100, so that one end of the first link 131 can stably slide along the first slide groove 110a, one end of the second link 132 can stably slide along the second slide groove 110b, and the other end of the third link 133 can stably slide along the third slide groove 120a and the fourth slide groove 120b.

[0041] Please also read Figures 4 to 7 , Figure 4 is a top view of an implementation of the refrigeration device provided by the present application; Figure 5 yes Figure 4 Enlarged view of middle part B; Figure 6 is a top view of another embodiment of the refrigeration device provided by the present application; Figure 7 yes Figure 6Enlarged view of the middle C part. When the door body 300 is opened or closed relative to the box body 200, one end of the first connecting rod 131 slides along the first sliding groove 110a, the other end of the first connecting rod 131 rotates relative to the second hinge seat 120, one end of the second connecting rod 132 slides along the second sliding groove 110b, the other end of the second connecting rod 132 rotates relative to the second hinge seat 120, one end of the third connecting rod 133 rotates relative to the first hinge seat 110, and the other end of the third connecting rod 133 slides along the third sliding groove 120a and the fourth sliding groove 120b. At the same time, the first connecting rod 131, the third connecting rod 133 and the second connecting rod 132 rotate relative to each other through the first rotating shaft 134. Through the cooperation of the first hinge seat 110, the second hinge seat 120 and the hinge body 130, the hinge mechanism 100 moves more smoothly, reducing the jamming phenomenon of the hinge mechanism 100, thereby improving the user experience; at the same time, the first hinge seat 110, the second hinge seat 120 and the first connecting rod 131, the second connecting rod 132, and the third connecting rod 133 in the hinge body 130 cooperate with each other, improving the strength of the hinge mechanism 100, and further improving the smoothness and stability of the movement of the hinge mechanism 100. In addition, the hinge mechanism 100 has a simple structure, which not only reduces the types and quantities of parts during the assembly process, but also reduces the difficulty of assembly, saves working hours, and improves the assembly efficiency. In addition, the hinge mechanism 100 is small in size and will not occupy too much space in the refrigeration equipment 1000.

[0042] The first hinge base 110 is used to be disposed in one of the box body 200 and the door body 300 . The second hinge base 120 is used to be disposed in the other of the box body 200 and the door body 300 .

[0043] Optionally, the first hinge seat 110 is used to be arranged on the box body 200, and the second hinge seat 120 is used to be arranged on the door body 300. Optionally, the first hinge seat 110 is used to be arranged on the door body 300, and the second hinge seat 120 is used to be arranged on the box body 200. The embodiment of the present application takes the first hinge seat 110 being arranged on the box body 200 and the second hinge seat 120 being arranged on the door body 300 as an example for explanation.

[0044] In some embodiments, the first slide groove 110a and the second slide groove 110b both have a first end 1101 and a second end 1102. Since the first slide groove 110a and the second slide groove 110b are arranged opposite to each other in the first direction YY, and the orthographic projection of the first slide groove 110a toward the second slide groove 110b completely overlaps with the second slide groove 110b, the first end 1101 of the first slide groove 110a corresponds to the first end 1101 of the second slide groove 110b in the first direction YY, and the second end 1102 of the first slide groove 110a corresponds to the second end 1102 of the second slide groove 110b in the first direction YY, that is, one end of the first connecting rod 131 and one end of the second connecting rod 132 can slide to the corresponding first end 1101 and the corresponding second end 1102 respectively and simultaneously. The third slide groove 120a and the fourth slide groove 120b both have a third end 1201 and a fourth end 1202 arranged opposite to each other.

[0045] When the door body 300 is opened to the maximum angle relative to the box body 200, the distance between the first end 1101 and the second hinge seat 120 is greater than the distance between the second end 1102 and the second hinge seat 120; the distance between the third end 1201 and the first hinge seat 110 is less than the distance between the fourth end 1202 and the first hinge seat 110.

[0046] When one end of the first link 131 and one end of the second link 132 slide to the corresponding first end 1101 respectively, and the other end of the third link 133 slides to the third end 1201, the door body 300 is in a closed state relative to the box body 200. At this time, the first link 131, the second link 132, the third link 133, the first hinge seat 110 and the second hinge seat 120 are in a retracted state, and the first link 131, the second link 132, the third link 133 and the second hinge seat 120 are accommodated in the first hinge seat 110. In the process of opening the door body 300 relative to the box body 200, the first link 131, the second link 132, the third link 133 and the second hinge seat 120 are gradually unfolded from the first hinge seat 110. When one end of the first connecting rod 131 and one end of the second connecting rod 132 slide to the corresponding second end 1102 respectively and the other end of the third connecting rod 133 slides to the fourth end 1202, the door body 300 opens to the maximum angle relative to the box body 200, and the maximum angle is greater than or equal to 180°.

[0047] By pulling or pushing the door body 300, the first connecting rod 131, the second connecting rod 132, and the third connecting rod 133 rotate around the preset rotating shaft, and slide along the preset sliding groove at the same time, so that the door body 300 is opened or closed relative to the cabinet 200. The door body 300 can be opened to a maximum angle relative to the cabinet 200, and the maximum angle is greater than or equal to 180°. By making the maximum angle of the door body 300 relative to the cabinet 200 greater than or equal to 180°, the door body 300 can be prevented from occupying the space around the refrigeration device 1000, thereby improving the user experience. The maximum angle of the door body 300 relative to the cabinet 200 can be 180°, 190°, 200°, 210°, 220°, 225°, 230°, 235°, etc., but is not limited thereto.

[0048] In some embodiments, please refer to Figure 8 , Figure 8 1 is a schematic diagram of the exploded structure of a part of the structure of the hinge body of the hinge mechanism provided in the present application. The first connecting rod 131 and the second connecting rod 132 are arranged opposite to each other in the first direction YY. The projection of the first connecting rod 131 toward the second connecting rod 132 at least partially falls on the third connecting rod 133. The projection of the first connecting rod 131 falling on the third connecting rod 133 has a first shaft hole 131a corresponding to the position of the first connecting rod 131. The projection of the first connecting rod 131 falling on the third connecting rod 133 has a third shaft hole 133a corresponding to the position of the third connecting rod 133, that is, the third connecting rod 133 has a third shaft hole 133a adapted to the first shaft hole 131a. The second connecting rod 132 has a second shaft hole 132a adapted to the first shaft hole 131a and the third shaft hole 133a. The first rotating shaft 134 passes through the first shaft hole 131a, the third shaft hole 133a and the second shaft hole 132a in sequence, so that the first connecting rod 131, the third connecting rod 133 and the second connecting rod 132 are rotatably connected.

[0049] The first connecting rod 131, the third connecting rod 133 and the second connecting rod 132 are rotatably connected through the first rotating shaft 134, so that the first connecting rod 131, the third connecting rod 133 and the second connecting rod 132 are stacked in the first direction YY. The hinge mechanism 100 also includes a plurality of first buffers 135. The first buffers 135 are arranged between the first connecting rod 131 and the third connecting rod 133 and between the third connecting rod 133 and the second connecting rod 132, and the first buffers 135 are used to be sleeved on the first rotating shaft 134. The first buffers 135 play a supporting role, used to support the first connecting rod 131 and the third connecting rod 133, and can form a certain gap between the first connecting rod 131 and the third connecting rod 133 and between the third connecting rod 133 and the second connecting rod 132, thereby reducing the friction between the first connecting rod 131 and the third connecting rod 133 and between the third connecting rod 133 and the second connecting rod 132, thereby improving the smoothness of the movement of the hinge mechanism 100 and reducing the occurrence of the stuck phenomenon.

[0050] The first buffer 135 between the first link 131 and the third link 133 may be integrally formed with the first link 131 or the third link 133, or the first buffer 135 between the first link 131 and the third link 133 may be detachably disposed between the first link 131 and the third link 133. The first buffer 135 between the third link 133 and the second link 132 may be integrally formed with the third link 133 or the second link 132, or the first buffer 135 between the third link 133 and the second link 132 may be detachably disposed between the third link 133 and the second link 132. The first connecting rod 131, the third connecting rod 133 and the second connecting rod 132 are connected by the first rotating shaft 134 and multiple first buffer parts 135. Not only can the door body 300 be suspended at any angle relative to the box body 200 when it is opened to the vertical position due to the self-weight and the load, but also the friction between the first connecting rod 131 and the third connecting rod 133 and between the third connecting rod 133 and the second connecting rod 132 can be reduced, thereby improving the movement smoothness of the hinge mechanism 100 and reducing the risk of jamming.

[0051] In some embodiments, please refer to Fig. 9 , Fig. 9 1 is a schematic diagram of the structure of the first hinge seat of the hinge mechanism provided in the present application. The first hinge seat 110 includes a first substrate 115, a mounting plate 113 and a second substrate 116 connected in sequence, wherein the first substrate 115 and the second substrate 116 are arranged opposite to each other in the first direction YY. The first slide groove 110a is provided on the first substrate 115. The second slide groove 110b is provided on the second substrate 116.

[0052] The mounting plate 113 is used to set the first hinge seat 110 on one of the box body 200 and the door body 300. This application takes the mounting plate 113 being used to set the first hinge seat 110 on the box body 200 as an example. The mounting plate 113 can be set on the box body 200 by plugging, clamping, bolting, magnetic adsorption connection, or bonding, so that the first hinge seat 110 is stably set on the box body 200. The first substrate 115 and the second substrate 116 extend from the mounting plate 113 in a direction away from the box body 200.

[0053] The first hinge seat 110 has a first side 111 and a second side 112 opposite to each other in the second direction XX. The second direction XX is perpendicular to the first direction YY. The box body 200 has a first side wall 203 and a second side wall 204 opposite to each other. The first side wall 203 and the second side wall 204 are two side walls of the refrigeration device 1000, wherein the first side wall 203 is away from the side of the box body 200 connected to the door body 300 through the hinge mechanism 100, and the second side wall 204 is close to the side of the box body 200 connected to the door body 300 through the hinge mechanism 100. The second direction XX is the arrangement direction of the first side wall 203 and the second side wall 204. When the first hinge seat 110 is set on the box body 200, the first side 111 of the first hinge seat 110 is close to the first side wall 203, and the second side 112 of the first hinge seat 110 is close to the second side wall 204. One end of the third connecting rod 133 is rotatably set on the second side 112 of the first hinge seat 110.

[0054] The first end 1101 of the first slide groove 110a and the second slide groove 110b is close to the mounting plate 113, and the second end 1102 of the first slide groove 110a and the second slide groove 110b is located on the side of the first end 1101 away from the mounting plate 113, and the second end 1102 is closer to the first side 111 of the first hinge seat 110 than the first end 1101, that is, the second end 1102 of the first slide groove 110a and the second slide groove 110b is located on the side of the first end 1101 close to the first side 111 of the first hinge seat 110. The first slide groove 110a and the second slide groove 110b are arc grooves protruding from the corresponding first end 1101 and the second end 1102 toward the first side 111.

[0055] In some embodiments, the line connecting the first end 1101 of the first slide groove 110a and the second slide groove 110b and the corresponding second end 1102 is perpendicular to the first direction YY and also perpendicular to the second direction XX; or, the second end 1102 of the first slide groove 110a and the second slide groove 110b is located on the side of the first end 1101 close to the second side 112 of the first hinge seat 110.

[0056] In some embodiments, please refer to Fig.10 , Fig.10 The first substrate 115, the mounting plate 113 and the second substrate 116 are arranged to form a first receiving groove 114. The first receiving groove 114 is used to receive at least part of the hinge body 130 and at least part of the second hinge seat 120.

[0057] One end of the third connecting rod 133 is rotatably disposed on the side of the first substrate 115 facing the second substrate 116 and / or the side of the second substrate 116 facing the first substrate 115, that is, one end of the third connecting rod 133 is located in the first receiving groove 114. One end of the first connecting rod 131 and one end of the second connecting rod 132 are also located in the first receiving groove 114, one end of the first connecting rod 131 is slidably disposed in the first slide groove 110a from the first substrate 115 toward the side of the first receiving groove 114, and one end of the second connecting rod 132 is slidably disposed in the second slide groove 110b from the second substrate 116 toward the side of the first receiving groove 114; thereby, at least a portion of the hinge body 130 and at least a portion of the second hinge seat 120 can be accommodated in the first receiving groove 114.

[0058] When the door body 300 is closed relative to the box body 200, the hinge body 130, the first hinge seat 110 and the second hinge seat 120 are in a folded state, the hinge body 130 is completely accommodated in the first receiving groove 114, and the second hinge seat 120 is at least partially exposed in the first receiving groove 114. Therefore, the first hinge seat 110 protects the hinge body 130 and the second hinge seat 120, and can reduce dust, water and other substances from falling into the hinge body 130 and the second hinge seat 120. The part of the second hinge seat 120 exposed in the first receiving groove 114 can be used to be set in the door body 300. In the process of opening the door body 300 relative to the box body 200, the hinge body 130 and the second hinge seat 120 are gradually unfolded from the first receiving groove 114.

[0059] The hinge mechanism 100 further includes a second rotating shaft 136 and a second buffer 137. The second buffer 137 is sleeved on the second rotating shaft 136. The second rotating shaft 136 is used to connect the third connecting rod 133 and the first substrate 115 and / or the third connecting rod 133 and the second substrate 116. The second buffer 137 is arranged between the third connecting rod 133 and the first substrate 115 and / or between the third connecting rod 133 and the second substrate 116. When one end of the third connecting rod 133 is rotatably set on the side of the first substrate 115 facing the second substrate 116, the second rotating shaft 136 connects the third connecting rod 133 and the first substrate 115, and the second buffer component 137 is set between the third connecting rod 133 and the first substrate 115; when one end of the third connecting rod 133 is rotatably set on the side of the second substrate 116 facing the first substrate 115, the second rotating shaft 136 connects the third connecting rod 133 and the second substrate 116, and the second buffer component 137 is set between the third connecting rod 133 and the second substrate 116. The second buffer member 137 plays a supporting role and can be used to support the third connecting rod 133. The second buffer member 137 can form a certain gap between the third connecting rod 133 and the first substrate 115 and between the third connecting rod 133 and the second substrate 116, thereby reducing the friction between the third connecting rod 133 and the first substrate 115 and between the third connecting rod 133 and the second substrate 116, thereby improving the smoothness of the movement of the hinge mechanism 100 and reducing the occurrence of sticking.

[0060] Please also read Fig.11 , Fig.11 1 is a schematic diagram of the structure of the self-locking member of the hinge mechanism provided in the present application. The hinge mechanism 100 also includes a self-locking member 140. The self-locking member 140 is used to be arranged on the other of the box body 200 and the door body 300. The embodiment of the present application is described by taking the locking member 140 being arranged on the door body 300 as an example. The self-locking member 140 is used to engage with the first hinge seat 110 when the door body 300 is in a closed state relative to the box body 200, so as to lock the door body 300 and prevent the door body 300 from automatically opening when it is in a closed state relative to the box body 200. When the door body 300 needs to be opened relative to the box body 200, the door body 300 is pulled in a direction away from the box body 200, so that the self-locking member 140 and the first hinge seat 110 can be disengaged. In addition, when the door body 300 is closed to a preset angle relative to the box body 200, the self-locking member 140 can provide the door body 300 with a restoring force that automatically drives the door body 300 to close relative to the box body 200. Under the action of the restoring force, the door body 300 can automatically close relative to the box body 200.

[0061] In some embodiments, the first substrate 115 of the first hinge seat 110 is formed with a clamping portion 1151. The clamping portion 1151 is located at the first side 111. A locking portion 141 is formed at one end of the self-locking member 140. The locking portion 141 is used to engage with the clamping portion 1151 when the door body 300 is in a closed state relative to the box body 200, so as to lock the door body 300.

[0062] The other end of the locking portion 141 is formed with a supporting portion 143. A transition portion 142 is connected between the locking portion 141 and the supporting portion 143, that is, the self-locking member 140 is formed with a locking portion 141, a transition portion 142 and a supporting portion 143 connected in sequence. Among them, the supporting portion 143 is used to support the door body 300 and the second hinge seat 120; the transition portion 142 is used to connect the supporting portion 143 and the locking portion 141; the locking portion 141 is used to engage with the clamping portion 1151 of the first substrate 115 to lock the door body 300 when the door body 300 is in a closed state relative to the box body 200.

[0063] The clamping portion 1151 of the first substrate 115 is formed with a clamping block 1151a and a first clamping groove 1151b arranged adjacent to each other. The first clamping groove 1151b is located on a side of the clamping block 1151a close to the mounting plate 113. The first clamping groove 1151b and the clamping block 1151a are used to engage with the locking portion 141 of the self-locking member 140 to lock the door body 300. The inner wall of the first clamping groove 1151b and the surface of the clamping block 1151a are smoothly arranged, thereby reducing the friction between the first clamping groove 1151b and the locking portion 141 and between the clamping block 1151a and the locking portion 141, and facilitating the cooperation and dissociation of the locking portion 141 and the clamping portion 1151.

[0064] The locking portion 141 includes a bent section 1411 and a locking section 1412 connected to the bent section 1411. The bent section 1411 and the locking section 1412 form a second clamping groove 141a. When the door body 300 is in a closed state relative to the box body 200, the locking section 1412 is engaged with the first clamping groove 1151b, and the second clamping groove 141a is engaged with the clamping block 1151a, so that the door body 300 is locked to the box body 200, so that the door body 300 will not open automatically when it is in a closed state relative to the box body 200.

[0065] In some embodiments, the notch of the second slot 141a is located between the bending section 1411 and the locking section 1412. The bending section 1411 includes a first section 1411a and a second section 1411b. The first section 1411a is connected to the transition portion 142 and extends in a direction away from the transition portion 142. The second section 1411b is connected to one end of the first section 1411a away from the transition portion 142, and the second section 1411b is an arc section protruding in a direction away from the support portion 143. The locking section 1412 is connected to one end of the second section 1411b away from the first section 1411a, and is inclined in a direction toward the transition portion 142.

[0066] By forming a first slot 1151b and a block 1151a on the locking portion 1151 of the first hinge seat 110, and forming a second slot 141a and a locking section 1412 on the locking portion 141 of the self-locking member 140, when the door body 300 is in a closed state relative to the box body 200, the locking section 1412 is engaged with the first slot 1151b, and the second slot 141a is engaged with the block 1151a, so that the door body 300 is locked to the box body 200. When the door body 300 needs to be opened relative to the box body 200, the door body 300 is pulled away from the box body 200, so that the second slot 141a is separated from the block 1151a, and the locking section 1412 is separated from the first slot 1151b, so that the self-locking member 140 is separated from the first hinge seat 110.

[0067] In some embodiments, the second hinge base 120 has a third side 121 and a fourth side 122 disposed opposite to each other. The third end 1201 of the third slide groove 120a and the fourth slide groove 120b is close to the third side 121 of the second hinge base 120, and the fourth end 1202 of the third slide groove 120a and the fourth slide groove 120b is close to the fourth side 122 of the second hinge base 120. Fig.12 , Fig.12 1 is a schematic diagram of the structure of the second hinge seat of the hinge mechanism provided in the present application. When the door body 300 is in a closed state relative to the box body 200, the third side 121 of the second hinge seat 120 is close to the second side 112 of the first hinge seat 110, the fourth side 122 of the second hinge seat 120 is close to the first side 111 of the first hinge seat 110, and the third slide groove 120a and the fourth slide groove 120b extend obliquely relative to the second direction XX. Please continue to refer to Figure 1 When the door body 300 is opened to the maximum angle relative to the box body 200, the distance between the third end 1201 of the third slide groove 120a and the fourth slide groove 120b and the first hinge seat 110 is smaller than the distance between the fourth end 1202 of the third slide groove 120a and the fourth slide groove 120b and the first hinge seat 110.

[0068] The other ends of the first connecting rod 131 and the second connecting rod 132 are rotatably disposed on the third side 121 of the second hinge base 120. The fourth side 122 of the second hinge base 120 has a first through hole 1202a.

[0069] A first fixing column 1431 is provided on the other side of the self-locking member 140, and the first fixing column 1431 is disposed on the supporting portion 143 of the self-locking member 140. The first fixing column 1431 is used to be embedded in the other of the box body 200 and the door body 300. The embodiment of the present application takes the first fixing column 1431 being embedded in the door body 300 as an example for explanation. The first fixing column 1431 has a second through hole 1431a that matches the first through hole 1202a. The first through hole 1202a and the second through hole 1431a are used to match with the fixing member to set the second hinge seat 120 on the self-locking member 140. In other embodiments, the second through hole 1431a of the first fixing column 1431 can also be replaced by a blind hole.

[0070] The self-locking member 140 is also provided with a second fixing column 1432. The second fixing column 1432 is also provided on the supporting portion 143 of the self-locking member 140 and is located on the side of the first fixing column 1431 close to the transition portion 142. The second fixing column 1432 is used to be embedded in the door body 300. The second fixing column 1432 has a third through hole 1432a. The door body 300 has a first mounting hole (not shown) that matches the third through hole 1432a. The third through hole 1432a and the first mounting hole are used to match with the fixing member to set the self-locking member 140 on the door body.

[0071] The transition portion 142 of the self-locking member 140 has a fourth through hole 142a. The door body 300 has a second mounting hole (not shown) that matches the fourth through hole 142a. The fourth through hole 142a and the second mounting hole are used to match with the fixing member to set the self-locking member 140 on the door body.

[0072] The fixing members in the embodiments of the present application may be bolts, screws, rivets, pins, etc., but are not limited thereto.

[0073] In some embodiments, continue to refer to Fig.11 The second hinge seat 120 includes a first bottom plate 123, a connecting plate 124, and a second bottom plate 125 connected in sequence. The first bottom plate 123, the connecting plate 124, and the second bottom plate 125 are surrounded to form a second receiving groove 126. The third slide groove 120a is provided in the first bottom plate 123, and the fourth slide groove 120b is provided in the second bottom plate 125. The other end of the third connecting rod 133 extends into the second receiving groove 126, and is slidably disposed in the third slide groove 120a and the fourth slide groove 120b.

[0074] The third connecting rod 133 is formed with an escape space 133b on one side facing the connecting plate 124, and the escape space 133b can be used to escape the connecting plate 124, so as to prevent the third connecting rod 133 from interfering with the connecting plate 124 during the process of closing or opening the door body 300 relative to the box body 200. The first through hole 1202a on the fourth side 122 of the second hinge seat 120 is opened in the first bottom plate 123 and the second bottom plate 125, and the first through hole 1202a of the first bottom plate 123 is arranged opposite to the first through hole 1202a of the second bottom plate 125.

[0075] In some embodiments, the other end of the first connecting rod 131 is rotatably disposed on a side of the first bottom plate 123 facing away from the second bottom plate 125 , and the other end of the second connecting rod 132 is rotatably disposed on a side of the second bottom plate 125 facing away from the first bottom plate 123 .

[0076] By setting the other end of the first connecting rod 131 on the side of the first base plate 123 facing away from the second base plate 125, and the other end of the second connecting rod 132 on the side of the second base plate 125 facing away from the first base plate 123, a certain gap is formed between the other end of the first connecting rod 131 and the third connecting rod 133, and between the other end of the second connecting rod 132 and the third connecting rod 133, thereby reducing the friction between the first connecting rod 131 and the third connecting rod 133 and between the third connecting rod 133 and the second connecting rod 132, thereby improving the smoothness of the movement of the hinge mechanism 100 and reducing the occurrence of sticking.

[0077] Please continue reading Figures 2 to 7 The present application also provides a refrigeration device 1000. The refrigeration device 1000 includes a box body 200, a door body 300 and a hinge mechanism 100 in any of the above embodiments. The box body 200 includes a top wall 201 and a bottom wall 202 arranged oppositely and a first side wall 203 and a second side wall 204 arranged oppositely. The top wall 201, the bottom wall 202, the first side wall 203 and the second side wall 204 are arranged to form a storage cavity. The storage cavity can be a refrigeration chamber, a freezing chamber or a temperature-changing chamber, but is not limited thereto. The first side wall 203 and the second side wall 204 are connected between the top wall 201 and the bottom wall 202. The first direction YY in the above embodiment can be the arrangement direction of the top wall 201 and the bottom wall 202, and the second direction XX can be the arrangement direction of the first side wall 203 and the second side wall 204. The door body 300 is rotatably arranged on the box body 200 through the hinge mechanism 100.

[0078] The box body 200 further includes a door frame 205, which is located on the side of the box body 200 facing the door body 300. The door frame 205 is arranged around the opening periphery of the storage cavity. The door frame 205 has a first frame strip 2051 and a second frame strip 2052 in the first direction YY. The first frame strip 2051 is the end face of the top wall 201 facing the door body 300. The second frame strip 2052 is the end face of the bottom wall 202 facing the door body 300. The door body 300 has a first end plate 301 and a second end plate 302 arranged opposite to each other in the first direction YY. Among them, the first end plate 301 is arranged on the same side as the top wall 201, and the second end plate 302 is arranged on the same side as the bottom wall 202. The refrigeration device 1000 may have at least two hinge mechanisms 100 , wherein one hinge mechanism 100 is connected between the first end plate 301 and the first frame bar 2051 , and the other hinge mechanism 100 is connected between the second end plate 302 and the second frame bar 2052 .

[0079] In the embodiment of the present application, the specific structure of the hinge mechanism 100 refers to the above embodiment. Since the refrigeration equipment 1000 provided in the present application adopts all the technical solutions of all the embodiments of the above hinge mechanism 100, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0080] The present application provides a hinge mechanism and a refrigeration device, the hinge mechanism is used for the refrigeration device, the refrigeration device includes a box body and a door body, the hinge mechanism includes a first hinge seat, a second hinge seat and a hinge body, the first hinge seat is used to be set in one of the box body and the door body, the first hinge seat has a first slide groove and a second slide groove arranged oppositely in the first direction; the second hinge seat is used to be set in the other of the box body and the door body, the second hinge seat has a third slide groove and a fourth slide groove arranged oppositely in the first direction; the hinge body includes a first connecting rod, a third connecting rod and a second connecting rod which are arranged in sequence in the first direction and are rotatably connected by a first rotating shaft, wherein one end of the first connecting rod is slidably set in the first slide groove, and the other end is rotatably set in the second hinge seat; one end of the second connecting rod is slidably set in the second slide groove, and the other end is rotatably set in the second hinge seat; one end of the third connecting rod is rotatably set in the first hinge seat, and the other end is slidably set in the third slide groove and the fourth slide groove. By arranging the first connecting rod, the third connecting rod and the second connecting rod of the hinge body in sequence in the first direction YY, and rotatably connected through the first rotating shaft, and at the same time making one end of the first connecting rod and the second connecting rod slide in the first sliding groove and the second sliding groove of the first hinge seat respectively, and the other end rotates to the second hinge seat, one end of the third connecting rod is rotated to the first hinge seat, and the other end slides in the third sliding groove and the fourth sliding groove of the second hinge seat, the hinge mechanism moves more smoothly, and can reduce the jamming phenomenon of the hinge mechanism when the door body is opened or closed relative to the box body, so that the door body can be opened or closed smoothly. At the same time, the first hinge seat, the second hinge seat and the first connecting rod, the second connecting rod and the third connecting rod in the hinge body cooperate with each other to improve the strength of the hinge mechanism, and further improve the movement smoothness and stability of the hinge mechanism.

[0081] The description of the hinge mechanism can be found in the above embodiments and will not be repeated here.

[0082] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A hinge mechanism, characterized in that: Used for refrigeration equipment, the refrigeration equipment includes a box body and a door body, and the hinge mechanism includes: A first hinge seat, used to be arranged on one of the box body and the door body, the first hinge seat having a first slide groove and a second slide groove arranged opposite to each other in a first direction; A second hinge seat, used to be arranged on the other of the box body and the door body, the second hinge seat having a third sliding groove and a fourth sliding groove arranged opposite to each other in the first direction; The hinge body includes a first connecting rod, a third connecting rod and a second connecting rod which are arranged in sequence in the first direction and are rotatably connected via a first rotating shaft, wherein one end of the first connecting rod is slidably set in the first sliding groove, and the other end is rotatably set in the second hinge seat; one end of the second connecting rod is slidably set in the second sliding groove, and the other end is rotatably set in the second hinge seat; one end of the third connecting rod is rotatably set in the first hinge seat, and the other end is slidably set in the third sliding groove and the fourth sliding groove.

2. The hinge mechanism according to claim 1, characterized in that: The first slide slot and the second slide slot both have a first end and a second end; the third slide slot and the fourth slide slot both have a third end and a fourth end that are arranged opposite to each other; When one end of the first connecting rod and one end of the second connecting rod slide to the corresponding first end respectively, and the other end of the third connecting rod slides to the third end, the door body is in a closed state relative to the box body; When one end of the first connecting rod and one end of the second connecting rod slide to the corresponding second end respectively and the other end of the third connecting rod slides to the fourth end, the door body opens to a maximum angle relative to the box body, and the maximum angle is greater than or equal to 180°.

3. The hinge mechanism according to claim 1, characterized in that: The first connecting rod and the second connecting rod are arranged opposite to each other in the first direction, and a projection of the first connecting rod toward the second connecting rod at least partially falls on the third connecting rod; The projection of the first connecting rod on the third connecting rod has a first axial hole corresponding to the position of the first connecting rod, and has a third axial hole corresponding to the position of the third connecting rod. The second connecting rod has a second axial hole adapted to the first axial hole and the third axial hole. The first rotating axis passes through the first axial hole, the third axial hole and the second axial hole in sequence to rotationally connect the first connecting rod, the third connecting rod and the second connecting rod.

4. The hinge mechanism according to claim 2, characterized in that: The first hinge seat includes a first substrate, a mounting plate and a second substrate connected in sequence, wherein the first substrate and the second substrate are arranged opposite to each other in the first direction, the first slide groove is opened on the first substrate, the second slide groove is opened on the second substrate, one end of the third connecting rod is rotatably set on the side of the first substrate facing the second substrate and / or the side of the second substrate facing the first substrate, and the mounting plate is used to set the first hinge seat on one of the box body and the door body.

5. The hinge mechanism according to claim 4, characterized in that: The first ends of the first slide groove and the second slide groove are close to the mounting plate, and the second ends are located on a side of the first end away from the mounting plate; The first hinge seat has a first side and a second side opposite to each other in a second direction, the second direction is perpendicular to the first direction, and the first sliding groove and the second sliding groove are arc-shaped grooves protruding from the corresponding first end and the second end toward the first side.

6. The hinge mechanism according to claim 5, characterized in that: The first substrate, the mounting plate and the second substrate are arranged to form a first accommodating groove, and the first accommodating groove is used to accommodate at least a part of the hinge body and at least a part of the second hinge seat.

7. The hinge mechanism according to claim 5, characterized in that: The first substrate is formed with a clamping portion, and the clamping portion is located at the first side; The hinge mechanism also includes a self-locking member, which is used to be arranged on the other of the box body and the door body. A locking portion is formed at one end of the self-locking member, and the locking portion is used to engage with the locking portion when the door body is in a closed state relative to the box body to lock the door body.

8. The hinge mechanism according to claim 7, characterized in that: The second hinge seat has a third side and a fourth side which are arranged opposite to each other; When the door body is in a closed state relative to the box body, the third side is close to the second side of the first hinge seat, the fourth side is close to the first side of the first hinge seat, and the third slide groove and the fourth slide groove extend obliquely relative to the second direction.

9. The hinge mechanism according to claim 8, characterized in that: The other ends of the first connecting rod and the second connecting rod are rotatably disposed on the third side of the second hinge seat, and the fourth side of the second hinge seat has a first through hole; A first fixing column is provided on the other side of the self-locking component, and the first fixing column is used to be embedded in the other of the box body and the door body. The first fixing column has a second through hole that matches the first through hole, and the first through hole and the second through hole are used to cooperate with the fixing component to set the second hinge seat on the self-locking component.

10. The hinge mechanism according to claim 1, characterized in that: The second hinge seat includes a first base plate, a connecting plate and a second base plate connected in sequence, the first base plate, the connecting plate and the second base plate are surrounded to form a second accommodating groove, the third slide groove is opened on the first base plate, the fourth slide groove is opened on the second base plate, the other end of the third connecting rod extends into the second accommodating groove, and is slidably arranged in the third slide groove and the fourth slide groove.

11. The hinge mechanism according to claim 10, characterized in that: The other end of the first connecting rod is rotatably disposed on a side of the first bottom plate facing away from the second bottom plate, and the other end of the second connecting rod is rotatably disposed on a side of the second bottom plate facing away from the first bottom plate.

12. A refrigeration device, characterized in that: include: The hinge mechanism according to any one of claims 1 to 11; The box body comprises a top wall and a bottom wall which are arranged opposite to each other, wherein the first direction is an arrangement direction of the top wall and the bottom wall; The door body is rotatably arranged on the box body through the hinge mechanism.

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