Hinge and opening and closing equipment

Abstract

The utility model discloses a hinge and opening and closing equipment, the hinge comprises a first hinge seat and a second hinge seat, the first hinge seat comprises a first hinge part, and the second hinge seat comprises a second hinge part rotatably connected with the first hinge part, a second mounting part used for being mounted in a mounting cavity of an opening and closing equipment main body, and an elastic part; the second mounting part is provided with a first through hole penetrating through the front side and the rear side of the second mounting part, the elastic part comprises a fixed end and a free end, the fixed end is connected with the side wall of the first through hole, and when the elastic part is in an initial state, the free end at least partially protrudes out of the front side of the second mounting part; the protruding part of the free end can elastically retract to be close to the first through hole. The hinge further comprises a supporting structure which is arranged on the side, protruding away from the free end, of the elastic part and used for limiting the elastic retraction distance of the elastic part. The supporting structure limits deformation of the elastic part, breakage caused by excessive deformation of the elastic part is prevented, and the reliability of the hinge is improved.

Description

Technical Field

[0001] This disclosure relates to the field of hinges, and more particularly to a hinge and an opening / closing device. Background Technology

[0002] A hinge is an opening and closing device installed between a door and a cabinet. It mainly consists of a fixed base connected to the cabinet, a rotating base connected to the door, and a spindle running through both. In related technologies, the fixed base and rotating base of the hinge employ a screwless design, and the fixed base uses an elastic part to improve the reliability of the connection. The inventors discovered that, during disassembly, the elastic part of this type of hinge is prone to damage, potentially rendering the entire hinge unusable. Utility Model Content

[0003] This invention provides a hinge and opening / closing device that can prevent damage to the elastic part of the hinge during disassembly, thus preventing the entire hinge from becoming unusable.

[0004] As a first aspect of the present disclosure, an embodiment of the present disclosure provides a hinge, including a first hinge seat and a second hinge seat. The first hinge seat includes a first hinge portion, and the second hinge seat includes a second hinge portion and a second mounting portion. The second hinge portion is rotatably connected to the first hinge portion. The second mounting portion is used to be installed in the mounting cavity of the opening and closing device body. The second mounting portion is provided with a first through hole penetrating the front and rear sides of the second mounting portion. The second hinge seat is also provided with an elastic portion, which includes a fixed end and a free end. The fixed end is connected to the sidewall of the first through hole. In the initial state of the elastic portion, the free end protrudes at least partially from the front side of the second mounting portion. After the free end is pressed, the protruding portion of the free end can elastically retract and approach the first through hole. The hinge also includes a support structure, which is provided on the side of the elastic portion away from the protruding free end. The support structure is used to limit the elastic retraction distance of the elastic portion.

[0005] Optionally, the end face of the support structure that protrudes from the free end of the second mounting part is the support surface, and the end face of the second mounting part that protrudes from the free end of the second mounting part is the assembly surface. In the initial state of the elastic part, the maximum dimension of the portion of the free end protruding from the second mounting part is d1, and the minimum gap between the support surface and the assembly surface is d2, where d2 is greater than or equal to d1.

[0006] Optionally, the thickness of the elastic part gradually increases from the fixed end to the free end, and the thickness represents the dimension of the elastic part in the direction of expansion and contraction.

[0007] Optionally, the support structure and the elastic part are integrally molded.

[0008] Optionally, the cross-sectional area of ​​the support structure is smaller than the cross-sectional area of ​​the elastic part.

[0009] Optionally, the thickness of the second mounting portion is less than the diameter of the second hinge portion, and the step difference between the back surface of the second mounting portion and the back surface of the second hinge portion is less than or equal to a preset value.

[0010] Optionally, the first hinge seat further includes a first mounting portion. When the opening and closing device is in the closed state, the second mounting portion is disposed on the side of the second hinge portion near the back of the mounting cavity, and the first mounting portion is disposed on the side of the first hinge portion away from the back of the mounting cavity.

[0011] Optionally, the first hinge seat further includes a first mounting portion, which has a first mounting hole for engaging with a fastener to secure the first mounting portion to the door body; and / or,

[0012] The first hinge seat further includes a first mounting portion, which is integrally formed with the first hinge portion; the second mounting portion and the second hinge portion are also integrally formed; and / or...

[0013] The first hinge seat further includes a first mounting portion, on which a first reinforcing rib is provided, and a second mounting portion is provided with a second reinforcing rib; and / or

[0014] The hinge also includes a second limiting structure, which includes a first limiting protrusion and a first limiting groove. The first limiting protrusion is located on the side of the first mounting part near the second hinge part, and the first limiting groove is located on the side of the second mounting part near the first hinge part. When the door of the opening and closing device is at its maximum opening and closing angle, the limiting protrusion is at least partially engaged and pressed into the limiting groove.

[0015] As a second aspect of this disclosure, this disclosure provides an opening and closing device, including:

[0016] The opening and closing body has an installation cavity recessed into its interior on its outer side wall.

[0017] The door body is connected to the opening and closing body in an openable and closable manner via a hinge as described in any of the first aspect embodiments. The first hinge seat is connected to the side wall of the door body. The second hinge part is at least partially located in the mounting cavity. The second mounting part is installed and embedded in the mounting cavity. The front side wall of the mounting cavity is provided with a second through hole. The elastic part cooperates with the second through hole to fix the second mounting part.

[0018] Optionally, the mounting cavity includes a first sidewall and a second sidewall located on both sides, the second sidewall being disposed near the first hinge portion, and at least a portion of the first sidewall and the second sidewall being inclined relative to the vertical direction.

[0019] The second hinge seat has a first wedge-shaped portion and a second wedge-shaped portion on both sides. The first wedge-shaped portion is fitted to the first side wall, and the second wedge-shaped portion is fitted to the second side wall. The first and second wedge-shaped portions are located on the second mounting portion; and / or, the first and second wedge-shaped portions are located on the second hinge portion; and / or

[0020] The mounting cavity also includes a first clearance portion located between the bottom of the mounting cavity and the front sidewall. The bottom end of the second mounting portion has a third wedge-shaped portion that fits snugly against the first clearance portion.

[0021] The technical solution of this disclosure embodiment can achieve the following beneficial effects: the hinge, by setting an elastic part, can improve the reliability of the insertion. The support structure is set on the side of the elastic part away from the free end protruding. The support structure is used to limit the elastic retraction distance of the elastic part, that is, the support structure limits the deformation of the elastic part, prevents the elastic part from deforming too much and causing breakage, thereby causing the hinge to be scrapped, thus improving the reliability of the hinge. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a hinge according to an embodiment of the present disclosure;

[0023] Figure 2 This is a schematic diagram of the hinge explosion structure according to an embodiment of this disclosure. Figure 1 ;

[0024] Figure 3 This is a schematic diagram of the hinge explosion structure according to an embodiment of the present disclosure. Figure 2 ;

[0025] Figure 4 This is a schematic diagram of the first hinge seat according to an embodiment of the present disclosure;

[0026] Figure 5 This is a schematic diagram of the second hinge seat according to an embodiment of the present disclosure. Figure 1 ;

[0027] Figure 6 This is a schematic diagram of the second hinge seat according to an embodiment of the present disclosure. Figure 2 ;

[0028] Figure 7 This is a schematic diagram of the second hinge seat according to an embodiment of the present disclosure. Figure 3 ;

[0029] Figure 8 This is a schematic diagram of a piston according to an embodiment of the present disclosure. Figure 1 ;

[0030] Figure 9 This is a schematic diagram of a piston according to an embodiment of the present disclosure. Figure 2 ;

[0031] Figure 10 This is a schematic diagram of the opening and closing body of an embodiment of the present disclosure. Figure 1 ;

[0032] Figure 11 This is a schematic diagram of the opening and closing body of an embodiment of the present disclosure. Figure 2 . Detailed Implementation

[0033] The contents of this disclosure will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] In the related technology, the elastic part of the hinge's fixing seat requires inward force to compress the spring during disassembly to remove the fixing seat. However, since the deformation of the elastic part is not limited, this can easily lead to the entire elastic part breaking, causing the entire hinge to be scrapped, reducing the hinge's service life and affecting the overall reliability of the hinge.

[0035] To address the problem of hinge failure due to the breakage of the elastic part in related technologies, this disclosure provides a hinge embodiment. The technical solution of the hinge is described below with reference to the accompanying drawings.

[0036] Reference Figures 1 to 3 As shown, this embodiment of the present disclosure provides a hinge 100, which includes a first hinge seat 10 and a second hinge seat 20. The first hinge seat 10 includes a first hinge portion 11. The second hinge seat 20 includes a second hinge portion 21 and a second mounting portion 22, which are rotatably connected to the first hinge portion 11. The second mounting portion 22 is used to be installed in the mounting cavity of the opening and closing device body. The second mounting portion 22 is provided with a first through hole 23 that passes through the front and rear sides of the second mounting portion 22. The second hinge seat 20 is also provided with an elastic portion 24, which includes a fixed end 241 and a free end 242. The fixed end 241 is connected to the side wall of the first through hole 23. In the initial state of the elastic portion 24, the free end 242 protrudes at least partially from the front side of the second mounting portion 22. After the free end 242 is pressed, the protruding portion of the free end 242 can elastically retract and approach the first through hole 23. The hinge 100 also includes a support structure 25, which is located on the side of the elastic part 24 away from the free end 242. The support structure 25 is used to limit the elastic retraction distance of the elastic part 24.

[0037] For example, the second hinge portion 21 is rotatably connected to the first hinge portion 11, and the first hinge portion 11 and the second hinge portion 21 can be rotatably connected by a structure such as a connecting shaft to realize the opening and closing function of the hinge.

[0038] For example, the second mounting part 22 is used to be installed in the mounting cavity of the opening and closing device body. The size of the second mounting part 22 is adapted to the size of the mounting cavity of the opening and closing device body. This adaptation can be understood as the size of the second mounting part 22 being equal to or slightly smaller than the size of the mounting cavity. The second mounting part 22 can be directly inserted into the mounting cavity.

[0039] The second mounting portion 22 is provided with a first through hole 23 that passes through the front and rear sides of the second mounting portion 22. It should be noted that the front side of the second mounting portion 22 refers to the outer side within the first mounting cavity, and the rear side of the second mounting portion 22 refers to the inner side within the first mounting cavity. The number of first through holes 23 can be one or more; in the accompanying drawings of this embodiment, there is one first through hole 23. Multiple first through holes can be provided and arranged along the height or length direction of the second mounting portion 22. The shape of the first through hole 23 can be a regular shape such as a rectangle or a circle, or it can be an irregular shape. The number and shape of the first through holes 23 can be set according to actual needs and are not limited here.

[0040] For example, the second mounting part 22 is installed in the first mounting cavity using a screwless fastener. The second hinge seat 20 is also provided with an elastic part 24, which is used to engage and fix the second mounting part 22 and the first mounting cavity. The number of elastic parts 24 corresponds one-to-one with the number of first through holes 23. The elastic part 24 includes a fixed end 241 and a free end 242. The fixed end 241 is connected to the side wall of the first through hole 23. For example, the fixed end 241 can be connected to the bottom wall or top wall of the first through hole 23 in the height direction. In the initial state of the elastic part 24, the free end 242 protrudes at least partially from the front side of the second mounting part 22. In the initial state of the elastic part 24, that is, when the elastic part 24 is not under any pressure, the free end 242 protrudes at least partially from the front side of the second mounting part 22, forming a hook-like structure, which can cooperate with the slot of the first mounting cavity to achieve fixation. After the free end 242 is compressed, the protruding part of the free end 242 can elastically retract and approach the first through hole 23.

[0041] The process of fixing the second mounting part 22 is as follows: The second mounting part 22 is inserted along the first mounting cavity. Since the free end 242 protrudes at least partially from the front of the second mounting part 22, it is squeezed by the inner wall of the first mounting cavity, causing the protruding portion of the free end 242 to elastically retract and approach the first through hole 23. When the second mounting part 22 is in place, the elastic part 24 enters the corresponding slot position on the front wall of the first mounting cavity. Because the elastic part 24 loses the squeezing force from the inner wall of the first mounting cavity, the free end 242 will recover its elastic deformation and enter the slot on the front wall, thus fixing the second mounting part 22. When removing the second mounting part 22, by pressing the elastic part 24, the free end disengages from the slot on the front wall of the first mounting cavity, and the second mounting part 22 can be removed upwards.

[0042] In related technologies, since the deformation of the elastic part 24 is not restricted when removing and disassembling the hinge, it is easy for the elastic part 24 to break completely, resulting in the entire hinge being scrapped, reducing the hinge's service life and affecting its overall reliability. However, the hinge of this embodiment also includes a support structure 25, which is located on the side of the elastic part 24 opposite to the free end 242, i.e., the back side of the elastic part 24. During removal and disassembly, pressing the elastic part 24 causes it to gradually compress and approach the first through hole. However, because the support structure 25 interferes with and abuts against the rear wall of the first mounting cavity, it limits the elastic retraction distance of the elastic part 24. This prevents excessive deformation of the elastic part from causing breakage and thus scrapping the hinge, improving its reliability.

[0043] For example, the first hinge seat 10 is a rotating seat, and the second hinge seat 20 is a fixed seat. The hinge device can be connected to the opening and closing device, such as between the door and the main body of a freezer, so that the door and the main body are hinged. Mounting holes can also be provided on the second mounting portion 22 as needed, and the second hinge seat 20 can also be fixed to the main body with screws installed through the mounting holes. The first hinge seat 10 can also be connected to the side wall of the door of the opening and closing device and rotate with the door. The second hinge seat 20 is connected to the main body of the opening and closing device through the second mounting portion. When the door and the main body of the opening and closing device are closed, the first hinge portion and the second hinge portion can be considered to be on the same plane.

[0044] For example, the second mounting part 22 is embedded in the mounting cavity of the main body of the opening and closing device. The second mounting part 22 can be spaced a certain distance from the inner wall of the mounting cavity or can be attached to the inner wall of the mounting cavity. For example, in the front-back direction of the main body of the opening and closing device, the second mounting part 22 can be limited by the inner wall of the mounting cavity. In the vertical direction of the main body of the opening and closing device, the second mounting part 22 can be limited by the bottom of the mounting cavity. This also prevents the hinge from tilting backward under force, thereby achieving the effect of preventing backward tilting, improving the reliability of the hinge, and preventing the hinge from loosening after long-term use.

[0045] Reference Figures 5-7 As shown, in one disclosed embodiment, the end face of the support structure 25 protruding from the free end 242 of the second mounting portion 22 is the support surface 251, and the end face of the second mounting portion 22 protruding from the free end 242 is the mounting surface 221. In the initial state of the elastic portion 24, the maximum dimension of the portion of the free end 242 protruding from the second mounting portion 22 is d1, and the minimum gap between the support surface 251 and the mounting surface 221 is d2, where d2 is greater than or equal to d1.

[0046] like Figure 7As shown, the end face of the support structure 25 that protrudes from the free end 242 into the second mounting portion 22 is the support surface 251, that is, the back side of the support structure 25 is the support surface 251. The end face of the second mounting portion 22 that protrudes from the free end 242 into the second mounting portion 22 is the mounting surface 221, that is, the back side of the second mounting portion 25 is the mounting surface 221. In the initial state of the elastic portion 24, the maximum dimension of the portion of the free end 242 protruding from the second mounting portion 22 is d1. The dimension of the portion of the free end 242 protruding from the second mounting portion 22 is the thickness dimension of the portion of the free end 242 located in the slot of the opening and closing device body in the initial state. The thickness dimension of the protruding portion of the free end 242 can be set to be equal or unequal. d1 is the distance between the foremost point of the free end 242 and the front end face of the second mounting portion. In the initial state of the elastic portion 24, the minimum gap between the support surface 251 and the mounting surface 221, that is, the minimum distance between the support surface 251 and the mounting surface 221, is d2. In this embodiment of the present disclosure, by setting d2 to be greater than or equal to d1, it can be ensured that the elastic part 24 can be completely disengaged from the slot of the opening and closing device body during disassembly, thereby facilitating disassembly.

[0047] Reference Figure 6 As shown, in one embodiment, the thickness of the elastic portion 24 gradually increases from the fixed end 241 to the free end 242, where the thickness represents the dimension of the elastic portion in the direction of extension and contraction. The gradual increase in thickness of the elastic portion 24 from the fixed end 241 to the free end 242 allows the outer end of the elastic portion 24 to form a hook shape, thereby facilitating the reliable fixation of the elastic portion 24.

[0048] Reference Figure 7 As shown, in one embodiment, the support structure 25 and the elastic portion 24 are integrally formed. The support structure 25 and the elastic portion 24 are integrally formed.

[0049] Reference Figure 7 As shown, exemplarily, the cross-sectional area of ​​the support structure 25 is smaller than the cross-sectional area of ​​the elastic part 24. That is, the orthographic projection of the support structure 25 in front is located within the orthographic projection of the elastic part 24 in front. The smaller cross-sectional area of ​​the support structure 25 compared to the elastic part 24 limits the extension and retraction distance of the elastic part, ensuring its elastic performance and facilitating pressing. The ratio of the cross-sectional area of ​​the support structure 25 to the cross-sectional area of ​​the elastic part 24 can be set within a preset range.

[0050] In one embodiment, the thickness of the second mounting portion 22 is less than the diameter of the second hinge portion 21, and the step difference between the back surface of the second mounting portion 22 and the back surface of the second hinge portion 21 is less than or equal to a preset value. The thickness of the second mounting portion 22 can be understood as the dimension of the second mounting portion 22 in the direction perpendicular to the axis of the second hinge portion 21 (the front and rear directions in the figure). The step difference between the back surface of the second mounting portion 22 and the back surface of the second hinge portion 21 is less than or equal to the preset value, that is, the back surface of the second mounting portion 22 and the back surface of the second hinge portion 21 are approximately flush. For example, the step difference can be 0, and the back surface of the second mounting portion 22 and the back surface of the second hinge portion 21 are flush, that is, the back surface of the second mounting portion 22 and the back surface of the second hinge portion 21 are in the same plane. Thus, the back surface of the second mounting portion 22 and the back surface of the second hinge portion 21 can jointly abut against the inner wall of the opening and closing device body, which can improve the reliability of the second hinge seat fixing. It should be noted that the specific value of the step difference between the back of the second mounting part 22 and the back of the second hinge part 21 is not limited here. For example, the step difference between the back of the second mounting part 22 and the back of the second hinge part 21 can be 5mm-8mm.

[0051] In one embodiment, the second mounting portion 22 is provided with a reinforcing rib, and the back side of the second mounting portion 22 can be understood as the surface of the entire second reinforcing rib.

[0052] In one embodiment, the second mounting part 22 includes a back surface and a bottom surface, both of which are planar. The back surface is fitted with the inner wall of the mounting cavity, and the bottom surface is fitted with the bottom surface of the mounting cavity. In this way, the bottom surface and the inner wall of the mounting cavity can limit the bottom and back of the second mounting part to prevent it from tilting backward.

[0053] In one embodiment, the thickness of the second mounting portion 22 gradually increases from the end of the second mounting portion 22 away from the second hinge portion 21 towards the end of the second mounting portion 22 closer to the second hinge portion 21. The front surface of the second mounting portion 22 forms an acute angle with its back surface. The thickness of the bottom surface of the second mounting portion 22 is less than the thickness of the second mounting portion 22 near the second hinge portion 21.

[0054] The back and bottom surfaces of the second mounting part can be set at approximately a right angle, and the front of the second mounting part 22 is set at an acute angle relative to the vertical direction, so that the cross-section of the second mounting part 22 is approximately a right trapezoid. In this embodiment, by setting the thickness of the second mounting part 22 and setting the mounting cavity of the opening and closing main body to a shape adapted to the second mounting part 22, a gap can be provided between the bottom surface of the second mounting part and the mounting cavity, ensuring a tighter insertion fit of the second mounting part and reducing gaps.

[0055] Reference Figure 1 As shown, in one embodiment, the first hinge seat 10 further includes a first mounting portion 12, and the first mounting portion 12 and the second mounting portion 22 are respectively on different sides of the first hinge seat 10 and the second hinge seat 20. For example, when the opening and closing device is in the closed state, the second mounting portion 12 is disposed on the side of the second hinge portion 21 near the back of the mounting cavity, and the first mounting portion 12 is disposed on the side of the first hinge portion 11 away from the back of the mounting cavity.

[0056] For example, the thickness of the second mounting portion 22 can be 10mm-14mm. The thickness of the second mounting portion 22 can be understood as the average thickness of the second mounting portion 22, or the thickness of the second mounting portion 22 can also be understood as the thickness of the second mounting portion 22 at all positions in the height direction.

[0057] For example, the sum of the heights of the back of the second mounting part 22 and the back of the second hinge part 21 is less than 40mm, which saves materials, facilitates transportation, and ensures a more stable hinge connection.

[0058] Reference Figures 2 to 4 As shown, in one disclosed embodiment, the first hinge seat 10 further includes a first mounting portion 12, on which a first mounting hole 121 is provided. The first mounting hole 121 is used to cooperate with a fastener to fix the first mounting portion 12 to the door body. For example, the first hinge seat 10 can be connected to the side wall of the door body through the first mounting portion 12 and rotate with the door body. When the door body and the opening and closing device are closed, the first hinge portion 11 and the second hinge portion 21 can be regarded as the same plane. The number of first mounting holes 121 can be multiple, and the shape and size of the first mounting holes 121 can be set according to actual usage requirements.

[0059] Reference Figure 2 and Figure 3 As shown, in one disclosed embodiment, the first hinge seat 10 further includes a first mounting portion 12, which is integrally formed with the first hinge portion 11, and the second mounting portion 22 and the second hinge portion 21 are integrally formed. Exemplarily, the first hinge portion 11 and the first mounting portion 12 can be injection molded into an integral structure, and the second hinge portion 21 and the second mounting portion 22 can be injection molded into an integral structure.

[0060] Reference Figure 2As shown, in one disclosed embodiment, the first hinge seat 10 further includes a first mounting portion 12, on which a first reinforcing rib is provided, and a second reinforcing rib is provided on the second mounting portion 22. The number of second reinforcing ribs can be multiple, and the second reinforcing ribs can be arranged in a regularly intersecting pattern, forming a rhomboid or square grid. The specific shape and number of the second reinforcing ribs are not limited here. The back surface of the second reinforcing rib is flat, and the second reinforcing rib at least partially overlaps the second hinge portion 21. The number of first reinforcing ribs can be multiple, and the first reinforcing ribs can be arranged in a regularly intersecting pattern. In this disclosed embodiment, the reinforcing ribs on the first mounting portion 12 and the second mounting portion 22 can enhance the structural strength of the first mounting portion 12 and the second mounting portion 22.

[0061] Reference Figures 1 to 3 As shown, in one disclosed embodiment, the hinge further includes a second limiting structure 30. The second limiting structure 30 includes a first limiting protrusion 31 and a first limiting groove 32. The first limiting protrusion 31 is disposed on the side of the first mounting portion 12 near the second hinge portion 21, and the first limiting groove 32 is disposed on the side of the second mounting portion 22 near the first hinge portion 11. When the door of the opening and closing device is at its maximum opening angle, the limiting protrusion is at least partially engaged and pressed into the limiting groove. The first limiting protrusion 31 is a block structure rather than a strip structure, which ensures that the hinge mechanism does not fail within a certain range of opening force, while the hinge may fail but not break beyond a certain range of opening force. For example, if the design requires that the hinge not fail when the door is pushed with a force of 0-80N, then the first limiting protrusion 31 and the first limiting groove 32 are provided to achieve the limiting. If the design requires that the hinge may fail but not break when the door is pushed with a force exceeding 80N, the first limiting protrusion will break at approximately 80N. This prevents the hinge from breaking when pushing the door with greater force; instead, it will only cause the hinge to over-rotate and fail.

[0062] Reference Figure 2 and Figure 3As shown, in one disclosed embodiment, the hinge device further includes a piston 40, an elastic element 50, and a connecting shaft 60. The first hinge portion 11 has a first mating structure 113, and the second hinge portion 21 is provided with a second receiving cavity 211 and a second opening 212. The piston 40 is disposed within the second receiving cavity 211, and the piston 40 has a second mating structure 41. The second mating structure 41 abuts against the first mating structure 113 through the second opening 212, and the first hinge seat 10 and the second hinge seat 20 are capable of reciprocating relative to each other in the abutting state. The elastic element 50 is disposed within the second receiving cavity 211 and located at the end of the piston 40 opposite to the second mating structure 41. The elastic element 50 provides assistance in the abutting state. The connecting shaft 60 passes through the first hinge portion 11, the piston 40, the elastic element 50, and the second hinge portion 21, so that the first hinge portion 11 and the second hinge portion 21 are fixed relative to each other axially.

[0063] Reference Figure 4 As shown, exemplarily, the first hinge portion 11 is provided with a first receiving cavity 111, the first receiving cavity 111 is provided with a first opening 112, the first opening 112 is opposite to and communicates with the second opening 212, and a first mating structure is provided in the first receiving cavity 111. One end of the first hinge portion 11 with the first opening 112 is connected to one end of the second hinge portion 21 with the second opening 212.

[0064] The elastic element 50 provides assistance during the abutment state, mitigating the problem of violent collision between the door and the housing caused by rapid door descent during closing, thus improving the user experience. Simultaneously, both the piston 40 and the elastic element 50 are housed within the second receiving cavity 211 of the second hinge seat 20. Furthermore, the first hinge seat 10, the second hinge seat 20, the piston 40, and the elastic element 50 can be assembled and connected via the connecting shaft 60, resulting in a simple and easy-to-assemble hinge assembly that reduces the space occupied by the hinge device.

[0065] Reference Figure 8 and Figure 9 As shown, exemplarily, the sidewall of the piston 40 is provided with an axially extending guide groove 42, and the sidewall of the second receiving cavity 211 is provided with a corresponding guide protrusion 213. The guide protrusion 213 is disposed within the guide groove 42. When the opening and closing device is at the maximum opening angle, the guide protrusion 213 abuts against the limiting protrusion, which can help limit the maximum opening angle.

[0066] For example, the hinge device also includes fasteners that are connected to both ends of the connecting shaft 60 to fix the first hinge seat 10 and the second hinge seat 20 axially relative to each other.

[0067] Reference Figure 2As shown, by way of example, the hinge device also includes a washer 70, which has a non-circular hole 71 at its center, and the end of the connecting shaft 60 passes through the non-circular hole 71 and is riveted to the washer 70.

[0068] Reference Figure 9 As shown, exemplarily, the piston 40 is provided with weight-reducing holes 43. The number of weight-reducing holes 43 can be one or more, and the multiple weight-reducing holes 43 are arranged circumferentially at intervals based on the central axis of the piston 40 itself. This arrangement can reduce the weight of the piston 40 and the hinge device, and avoid injection molding defects that occur when the piston 40 is solidly injection molded.

[0069] Reference Figure 9 As shown, a first positioning protrusion 44 is provided at the center of the bottom end of the piston 40, which is used to position the elastic element 50. A second positioning protrusion 214 is provided at the center of the bottom end of the second receiving cavity 211, which is also used to position the elastic element 50. By positioning the elastic element 50 with the first positioning protrusion 44 and the second positioning protrusion 214, the elastic element 50 can be prevented from shaking and its wear can be reduced. Moreover, when a countersunk hole is provided at the bottom end of the second hinge seat 20 corresponding to the fastener at the end of the connecting shaft, the second positioning protrusion 214 can also improve the structural strength of the second hinge seat 20.

[0070] This disclosure also provides an opening and closing device, which includes an opening and closing body 200 and a door body. The outer wall of the opening and closing body 200 is provided with a mounting cavity 201 recessed into the body. The door body is connected to the opening and closing body 200 in an openable and closable manner via a hinge according to this disclosure. A first hinge seat 10 is connected to the side wall of the door body. A second hinge portion 21 is at least partially located within the mounting cavity 201. A second mounting portion 22 is installed and embedded in the mounting cavity 201. A second through hole is provided on the front side wall of the mounting cavity. An elastic portion 24 cooperates with the second through hole to fix the second mounting portion 22.

[0071] In this embodiment, the second mounting part 22 is installed in the mounting cavity of the opening and closing body. The mounting cavity can further limit the second mounting part 22, so that the hinge will not tilt backward after being subjected to force, thereby improving the stability and reliability of the hinge. Moreover, the second mounting part 22 can be fixed by a snap-fit ​​through the second through hole. The elastic part 24 is limited by the elastic extension distance through the support structure 25 to prevent the elastic part 24 from being damaged due to excessive elastic deformation, thereby causing the entire hinge to be damaged, thus improving the reliability of the hinge.

[0072] For example, the opening and closing device can be a freezer, such as a top-opening floor freezer, or other opening and closing devices, such as a dishwasher or a storage cabinet.

[0073] For example, the opening and closing body includes a frame portion with a mounting cavity. A clearance portion is provided at the bottom of the mounting cavity, and the clearance portion is located near the front sidewall. The frame portion can be detachably mounted on the opening and closing body, or the frame portion can be integrally formed with the opening and closing body.

[0074] Reference Figure 5 , Figure 6 , Figure 10 as well as Figure 11 As shown, the mounting cavity 201 includes a first part and a second part, with the second part located at the lower end of the first part. The first part includes a first sidewall B1 and a second sidewall B2, with the second sidewall B2 positioned close to the first hinge portion 11. The first sidewall B1 and the second sidewall B2 are inclined relative to the vertical direction. A first wedge-shaped portion 222 and a second wedge-shaped portion 223 are respectively provided on both sides of the second hinge seat 20. The first wedge-shaped portion 222 is fitted to the first sidewall B1, and the second wedge-shaped portion 223 is fitted to the second sidewall B2. The first wedge-shaped portion and the second wedge-shaped portion are located on the second mounting portion, and / or the first wedge-shaped portion and the second wedge-shaped portion are located on the second hinge portion.

[0075] For example, the first sidewall and the second sidewall refer to the left and right sidewalls of the first part. The first sidewall is inclined relative to the vertical direction, and the distance between the outer end of the first sidewall and the first hinge is smaller than the distance between the inner end of the second sidewall and the first hinge. The inclination angle of the first sidewall B1 is not limited here and can be set according to actual usage needs.

[0076] For example, the second sidewall is inclined relative to the vertical direction, and the distance between the outer end of the second sidewall and the center of the mounting cavity is less than the distance between the inner end of the second sidewall and the center of the mounting cavity. The inclination angle of the second sidewall is not limited here. The first and second sidewalls together form a figure-eight shape.

[0077] When the side walls of the opening frame of the main body are vertical, when the door is opened or a hinge strength test is conducted, the force on the opening frame is entirely borne by the protruding edge of the front opening, which may affect the strength of the hinge. In this embodiment, by using a first wedge-shaped part that engages with the inclined surface of the first side wall, and a second wedge-shaped part that engages with the inclined surface of the second side wall, two additional force-bearing points are added to the opening frame, thus further increasing the overall strength.

[0078] Reference Figure 6 As shown, by way of example, a first clearance portion is also provided in the mounting cavity, the first clearance portion is located between the bottom of the mounting cavity and the front side wall, and a third wedge portion 224 is provided at the bottom end of the second mounting portion, the third wedge portion 224 is fitted and assembled with the first clearance portion.

[0079] The above detailed description is a specific description of the feasible embodiments of this disclosure. These embodiments are not intended to limit the scope of protection of this disclosure. All equivalent implementations or modifications that do not depart from this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A hinge, characterized in that, comprising a first hinged seat comprising a first hinge part; a second hinged seat comprising a second hinge part and a second mounting part, the second hinge part being rotatably connected with the first hinge part, the second mounting part being arranged in a mounting cavity of a main body of the opening and closing device, the second mounting part being provided with a first through hole penetrating through a front side and a back side of the second mounting part, the second hinged seat further being provided with an elastic part, the elastic part comprising a fixed end and a free end, the fixed end being connected with a side wall of the first through hole, in an initial state of the elastic part, the free end at least partially protruding from the front side of the second mounting part, after the free end being pressed, the protruding part of the free end being elastically retracted close to the first through hole; the hinge further comprising a support structure, the support structure being arranged on a side of the elastic part away from the protruding part of the free end, the support structure being used for limiting the elastic retraction distance of the elastic part.

2. Hinge according to claim 1, characterized in that an end surface of the second mounting part away from the protruding part of the free end being a mounting surface, a distance between the support surface and the mounting surface being d2, d2 being greater than or equal to d1.

3. The hinge according to claim 1, characterized in that a thickness of the elastic part gradually increasing from the fixed end to the free end, the thickness representing a dimension of the elastic part in the direction of stretching and contraction.

4. The hinge of claim 1, wherein the support structure and the elastic part being integrally formed.

5. Hinge according to claim 4, characterized in that an area of a cross section of the support structure being smaller than an area of a cross section of the elastic part.

6. The hinge of claim 1, wherein a thickness of the second mounting part being smaller than a diameter of the second hinge part, and a difference between a back surface of the second mounting part and a back surface of the second hinge part being smaller than or equal to a preset value.

7. The hinge of claim 1, wherein the first hinged seat further comprising a first mounting part, in a closed state of the opening and closing device, the second mounting part being arranged on a side of the second hinge part close to the back surface of the mounting cavity, the first mounting part being arranged on a side of the first hinge part away from the back surface of the mounting cavity.

8. The hinge of claim 1, wherein the first hinged seat further comprising a first mounting part, the first mounting part being provided with a first mounting hole, the first mounting hole being used for cooperating with a fastener to fix the first mounting part on a door body; and / or, the first hinged seat further comprising a first mounting part, the first mounting part and the first hinge part being integrally formed, the second mounting part and the second hinge part being integrally formed; and / or, the first hinged seat further comprising a first mounting part, the first mounting part being provided with a first reinforcing rib, the second mounting part being provided with a second reinforcing rib; and / or the hinge further comprising a second limiting structure, the second limiting structure comprising a first limiting protrusion and a first limiting groove, the first limiting protrusion being arranged on a side of the first mounting part close to the second hinge part, the first limiting groove being arranged on a side of the second mounting part close to the first hinge part, when a door body of the opening and closing device is at a maximum opening and closing angle, the limiting protrusion being at least partially clamped and pressed in the limiting groove.

9. An opening and closing device characterized by comprising: the opening and closing device comprising: The hinge body is provided with a mounting cavity recessed to the inside of the hinge body; The door body is connected to the hinge body through the hinge as claimed in any one of claims 1 to 8, the first hinge seat is connected to the side wall of the door body, the second hinge part is at least partially located in the mounting cavity, the second mounting part is embedded in the mounting cavity, the front side wall of the mounting cavity is provided with a second through hole, and the elastic part is matched with the second through hole to fix the second mounting part.

10. The opening and closing device according to claim 9, characterized in that The mounting cavity comprises a first side wall and a second side wall located on both sides, the second side wall is located close to the first hinge part, and at least part of the first side wall and the second side wall is arranged to be inclined to the vertical direction, The second hinge seat is provided with a first wedge part and a second wedge part on both sides, the first wedge part is matched and assembled with the first side wall, the second wedge part is matched and assembled with the second side wall, the first wedge part and the second wedge part are located on the second mounting part; and / or, the first wedge part and the second wedge part are located on the second hinge part; and / or The mounting cavity is further provided with a first accommodation part, the first accommodation part is located between the bottom of the mounting cavity and the front side wall, and the bottom end of the second mounting part is provided with a third wedge part, the third wedge part is matched and assembled with the first accommodation part.

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