Hinge device and opening and closing device

Abstract

The utility model discloses hinge equipment and an opening and closing device, the hinge equipment comprises a first hinge seat and a second hinge seat, and the first hinge seat comprises a first hinge part; the second hinge seat comprises a second hinge part and a second mounting part, the second hinge part is rotatably connected with the first hinge part, the second mounting part is used for being mounted and embedded in the mounting cavity of the opening and closing device main body, and a second mounting hole is formed in the second mounting part; the second mounting hole is used for being matched with a fastener so that the second mounting part can be fixedly connected with the opening and closing device body. The mounting cavity of the opening and closing device body of the hinge equipment can limit the second hinge seat through the second mounting part, so that the hinge equipment does not lean backwards after being stressed, the backward inclination preventing effect is achieved, the stability and firmness of the hinge equipment are improved, and the hinge equipment is prevented from loosening after being used for a long time.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to the field of hinge devices, and in particular, to a hinge device and an opening and closing device. Background Art

[0002] A hinge device is a device installed on a door body to realize the opening and closing of the door body. For example, a hinge device installed on a freezer includes a fixed seat connected to a cabinet body, a rotating seat connected to the door body, and a core shaft passing through the fixed seat and the rotating seat. Some hinge devices also include an elastic member.

[0003] In related technologies, due to reasons such as the thrust of opening the door, the elastic force of the elastic member, and inertia, a very large moment will be formed, so that the rotating seat may be subjected to a large force when rotating. The rotating seat and the fixed seat are fixed together by a core shaft, so the force received by the rotating seat will drive the fixed seat to tilt backward. In related technologies, the fixed seat is connected to the cabinet body by screws, and the hinge tilt cannot be completely avoided, resulting in a reduction in the reliability of the hinge device. After long-term use, the hinge device is prone to loosening. Utility Model Content

[0004] As a first aspect of the embodiments of the present disclosure, an embodiment of the present disclosure provides a hinge device, including

[0005] A first hinge seat, including a first hinge portion;

[0006] A second hinge seat, including a second hinge portion and a second installation portion. The second hinge portion is rotatably connected to the first hinge portion. The second installation portion is used to be installed and embedded in an installation cavity of the main body of the opening and closing device. A second installation hole is provided on the second installation portion, and the second installation hole is used to cooperate with a fastening member to fixedly connect the second installation portion to the main body of the opening and closing device.

[0007] In some possible implementation manners, the thickness of the second installation portion is less than the diameter of the second hinge portion, and the segment difference between the back surface of the second installation portion and the back surface of the second hinge portion is less than or equal to a preset value.

[0008] In some possible implementation manners, the back surface of the second installation portion is flat, and the back surface of the second installation portion is attached to the inner side wall of the installation cavity; and / or, the thickness of the second installation portion gradually increases from the end of the second installation portion far from the second hinge portion to the end of the second installation portion close to the second hinge portion; and / or, the second installation portion further includes a first surface, the first surface is disposed opposite to the back surface of the second installation portion, and the first surface and the back surface of the second installation portion are disposed at an angle, and the angle is an acute angle.

[0009] In some possible implementations, the thickness of the second mounting portion is 10 mm-14 mm; and / or the sum of the heights of the back side of the second mounting portion and the back side of the second hinged portion is less than 40 mm.

[0010] In some possible implementations, the first hinged seat also includes a first mounting portion, and when the opening and closing device is in a closed state, the second mounting portion is arranged on a side of the second hinged portion close to the back of the mounting cavity, and the first mounting portion is arranged on a side of the first hinged portion away from the back of the mounting cavity.

[0011] In some possible implementations, the first hinge seat further includes a first mounting portion, the first mounting portion is provided with a first mounting hole, and the first mounting hole is used to cooperate with a fastener to fix the first mounting portion on the door body of the opening and closing device; and / or,

[0012] The first hinge seat further comprises a first mounting portion, the first mounting portion and the first hinge portion are integrally formed, and the second mounting portion and the second hinge portion are integrally formed; and / or,

[0013] The first hinge seat also includes a first mounting portion, on which a first reinforcing rib is arranged, and on which a second reinforcing rib is arranged.

[0014] In some possible implementations, the hinge device also includes a second limiting structure, which includes a first limiting protrusion and a first limiting groove. The first limiting protrusion is arranged on a side of the first mounting part close to the second hinge part, and the first limiting groove is arranged on a side of the second mounting part close to the first hinge part. When the door body of the opening and closing device is at the maximum opening and closing angle, the limiting protrusion is at least partially clamped and pressed into the limiting groove.

[0015] In some possible implementations, the hinge device further includes:

[0016] The piston, the first hinged part has a first matching structure, the second hinged part is provided with a second accommodating cavity and a second opening, the piston is arranged in the second accommodating cavity, the piston has a second matching structure, and the second matching structure abuts against the first matching structure through the second opening;

[0017] An elastic member, which is disposed in the second accommodating cavity and is located at an end of the piston away from the second matching structure, and can provide assistance for the abutting state;

[0018] A connecting shaft is provided through the first hinge part, the piston, the elastic member and the second hinge part, so that the first hinge part and the second hinge part are relatively fixed in the axial direction.

[0019] In some possible implementation manners, a first limiting structure is provided between the abutting surfaces of the first mating structure and the second mating structure. The first limiting structure includes a first limiting portion located on the first mating structure and a second limiting portion located on the second mating structure. When the hinge device is in the initial state, the first limiting portion and the second limiting portion are in limiting cooperation.

[0020] In some possible implementation manners, the second mating structure includes a first helical surface and a first top surface. The first mating structure includes a first mating surface and a second top surface. One end of the first top surface is connected to the top end of the first helical surface. The first helical surface and the first mating surface are in cooperation. The first top surface and the second top surface correspond to each other. The first limiting portion is provided on the second top surface, and the second limiting portion is provided on the first top surface. When the hinge device is in the open state, the first helical surface and the first mating surface are in abutment.

[0021] In some possible implementation manners, the first limiting portion is a protruding portion, and the second limiting portion is a recessed portion adapted to the protruding portion, or the first limiting portion is a recessed portion, and the second limiting portion is a protruding portion adapted to the recessed portion; the diameter of the recessed portion is greater than or equal to the diameter of the protruding portion.

[0022] In some possible implementation manners,

[0023] An axially extending guiding groove is provided on the side wall of the piston, and a corresponding guiding protrusion is provided on the side wall of the second accommodating cavity. The guiding protrusion is disposed in the guiding groove; and / or,

[0024] The hinge device further includes a fastener, and the fastener is connected to both ends of the connecting shaft so that the first hinge seat and the second hinge seat are axially relatively fixed; and / or,

[0025] The hinge device further includes a gasket. The center of the gasket has a non-circular hole, and the end of the connecting shaft penetrates into the non-circular hole and is riveted to the gasket; or, the center of the gasket has a polygonal hole, and the end of the connecting shaft penetrates into the polygonal hole and is riveted to the gasket; and / or,

[0026] The piston is provided with a weight-reducing hole; and / or,

[0027] A first positioning protrusion is provided along the center at the bottom end of the piston, and the first positioning protrusion is used for positioning the elastic member; and / or,

[0028] A second positioning protrusion is provided along the center at the bottom end of the second accommodating cavity, and the second positioning protrusion is used for positioning the elastic member.

[0029] As a second aspect of the embodiments of the present disclosure, the embodiments of the present disclosure provide an opening and closing device, and the opening and closing device includes:

[0030] The device main body is provided with a third opening. The outer side wall of the device main body is provided with a mounting cavity recessed towards the inside of the device main body, and the mounting cavity is provided with a fourth opening facing the outside of the device main body.

[0031] The door body is pivotally connected to the third opening of the device main body through the hinge device according to any one of the embodiments of the present disclosure. The first hinge seat is connected to the side wall of the door body. The second hinge portion is at least partially located in the mounting cavity. The second mounting portion is installed and embedded in the mounting cavity, and the second mounting portion is fixedly connected to the device main body by a fastener passing through the second mounting hole.

[0032] In some possible implementation manners, the mounting cavity includes a first part and a second part. The second part is located at the lower end of the first part. The second hinge portion is at least partially located in the first part, and the second mounting portion is snap-fitted in the second part.

[0033] In some possible implementation manners, an edge portion is protrudingly provided on the periphery of the fourth opening. The edge portion and the second part form a card slot, and the card slot is located on the side of the mounting cavity away from the fourth opening. The second mounting portion is embedded in the card slot.

[0034] The technical solution of the embodiment of the present disclosure can achieve the following beneficial effects: In this hinge device, the second hinge seat is connected to the opening and closing device main body through the second mounting portion. The second mounting portion is used for installation and embedding in the mounting cavity of the opening and closing device main body. When the opening and closing device opens the door, the mounting cavity can play a limiting role on the second hinge seat through the second mounting portion, so that the hinge device no longer tilts backward after being stressed, achieving the anti-backward tilting effect, improving the stability and reliability of the hinge device, and preventing the hinge device from loosening after long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic assembly diagram of the hinge device according to the embodiment of the present disclosure;

[0036] Figure 2 It is an exploded schematic diagram of the hinge device according to the embodiment of the present disclosure;

[0037] Figure 3 It is a schematic diagram of the hinge device according to the embodiment of the present disclosure;

[0038] Figure 4 It is a schematic diagram of the hinge device according to the embodiment of the present disclosure from another perspective;

[0039] Figure 5 It is a schematic assembly diagram of the second hinge seat and the piston according to the embodiment of the present disclosure;

[0040] Figure 6 It is a schematic diagram of the second hinge seat according to the embodiment of the present disclosure;

[0041] Figure 7 It is a schematic diagram of the second hinge seat according to the embodiment of the present disclosureFigure 2 ;

[0042] Figure 8 Schematic diagram of another perspective of the second hinge seat according to an embodiment of the present disclosure Figure 2 ;

[0043] Figure 9 Schematic plan view of the second hinge seat according to an embodiment of the present disclosure;

[0044] Figure 10 Schematic diagram of the first hinge seat according to an embodiment of the present disclosure;

[0045] Figure 11 Schematic diagram of another perspective of the first hinge seat according to an embodiment of the present disclosure;

[0046] Figure 12 Schematic diagram of the piston according to an embodiment of the present disclosure;

[0047] Figure 13 Schematic diagram of another perspective of the piston according to an embodiment of the present disclosure;

[0048] Figure 14 Schematic diagram of the main body of the opening and closing device according to an embodiment of the present disclosure. Detailed implementation manners

[0049] The following further describes in detail the content of the present utility model in conjunction with the accompanying drawings and specific implementation manners.

[0050] Referring to Figures 1 to 4 as shown, an embodiment of the present disclosure provides a hinge device 100. The hinge device 100 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. The second hinge portion 21 is rotatably connected to the first hinge portion 11. The second mounting portion 22 is used for being mounted and embedded in the mounting cavity of the opening and closing device main body 200. A second mounting hole 221 is provided on the second mounting portion 22. The second mounting hole 221 is used for cooperating with a fastener 300 to fixedly connect the second mounting portion 22 and the opening and closing device main body 200.

[0051] Exemplarily, 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 between the door body and the main body of an opening and closing device (such as a freezer), so that the door body and the main body are hinged. A second mounting hole 221 is provided on the second mounting portion 22. The second hinge seat 20 can be fixedly connected to the opening and closing device main body 200 by installing screws through the second mounting hole 221.

[0052] Exemplarily, the first hinge seat 10 can be connected to the side wall of the door body of the opening and closing device and rotate with the door body. The second hinge seat 20 is connected to the main body 200 of the opening and closing device through the second mounting portion 22. When the door body and the main body 200 of the opening and closing device are closed, the first hinge portion 11 and the second hinge portion 21 can be regarded as being in the same plane.

[0053] Exemplarily, the hinge device has a first posture and a second posture. The first hinge seat 10 can reciprocally rotate relative to the second hinge seat 20 within a preset angle range, so that the first mating structure and the second mating structure slide relative to each other, so that the hinge device can be switched between the first posture and the second posture. When the hinge device is assembled, the first posture of the hinge device can correspond to the closed state of the door body of the opening and closing device and the state where the opening angle of the door body is relatively small, and the second posture can correspond to the maximum opening state of the door body of the opening and closing device and the state where the opening angle of the door body is relatively large.

[0054] Exemplarily, the second mounting portion 22 is used for being installed and embedded in the mounting cavity of the main body 200 of the opening and closing device. The main body 200 of the opening and closing device is provided with a mounting cavity, and the mounting cavity can include a first cavity and a second cavity arranged in the left-right direction. The depth of the first cavity is greater than the depth of the second cavity. The first hinge seat is installed through the second cavity, and the second hinge seat is installed through the first cavity. For example, the second mounting portion 22 of the second hinge seat is completely installed and embedded in the second cavity of the main body 200 of the opening and closing device, and at least a part of the second hinge portion 21 is located in the second cavity. The first hinge portion 11 is installed through the first cavity and at least a part of it is located outside the first cavity.

[0055] Exemplarily, a fourth opening is provided on the outer side wall of the mounting cavity close to the main body 200 of the opening and closing device, and an assembly hole is provided on the side wall of the mounting cavity away from the fourth opening corresponding to the second mounting hole 221. A fastener (such as a screw) passes through the second mounting hole 221 and the assembly hole to fixedly connect the second mounting portion 22 with the main body 200 of the opening and closing device.

[0056] Refer to Figure 1 and Figure 2 As shown, exemplarily, the second mounting portion 22 is embedded in the mounting cavity of the main body 200 of the opening and closing device. The second mounting portion 22 can be spaced apart from the inner side wall of the mounting cavity by a certain distance or the second mounting portion 22 can be in contact with the inner side wall of the mounting cavity. For example, in the front-rear direction of the main body of the opening and closing device, the second mounting portion 22 can play a role in defining the second mounting portion 22 through the inner side wall of the mounting cavity. In the up-down direction of the main body of the opening and closing device, the second mounting portion 22 can play a role in defining the second mounting portion 22 through the bottom of the mounting cavity. This can prevent the hinge device from tilting backward after being stressed, thereby achieving the anti-backward tilting effect, improving the reliability of the hinge device, and preventing the hinge device from loosening after long-term use.

[0057] The hinge device of the embodiments of the present disclosure 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, and the second hinge portion 21 is rotatably connected to the first hinge portion 11. The second mounting portion 22 is used to be mounted and embedded in the mounting cavity of the opening and closing device main body 200. A second mounting hole 221 is provided on the second mounting portion 22, and the second mounting hole 221 is used to cooperate with a fastener to fixedly connect the second mounting portion 22 to the opening and closing device main body. With such a setting, the second mounting portion 22 can be fixedly connected to the opening and closing device main body by the fastener passing through the second mounting hole 221, ensuring the stability of the connection between the second hinge seat 20 and the opening and closing device main body. Moreover, the second mounting portion 22 can also be embedded in the mounting cavity of the opening and closing device main body 200, and the mounting cavity can further limit the second mounting portion, so that the hinge device will not tilt backward after being stressed, achieving the anti-backward tilting effect, improving the stability and reliability of the hinge device, and preventing the hinge device from becoming loose after long-term use.

[0058] Referring to Figures 5 to 8 As shown, in an embodiment of the disclosure, the thickness of the second mounting portion 22 is less than the diameter of the second hinge portion 21, and the segment 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-back direction in the figure).

[0059] It should be noted that the segment difference between the back surface of the second mounting portion 22 and the back surface of the second hinge portion 21 being less than or equal to a preset value can be understood as that the back surface of the second mounting portion 22 and the back surface of the second hinge portion 21 are substantially flush. Exemplarily, the segment difference can be 0, that is to say, 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. With such a setting, 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 side wall of the device main body, which can improve the firmness of the fixation of the second hinge seat.

[0060] It should be noted that the specific value of the segment difference between the back surface of the second mounting portion 22 and the back surface of the second hinge portion 21 is not limited herein. For example, the segment difference between the back surface of the second mounting portion 22 and the back surface of the second hinge portion 21 can be 5 mm - 8 mm.

[0061] In one embodiment, the back surface of the second mounting portion 22 and the back surface of the second hinge portion 21 are flush, the back surfaces of both the second mounting portion 22 and the second hinge portion 21 are planar, and the back surface of the second mounting portion 22 and the back surface of the second hinge portion 21 are flush.

[0062] In one embodiment, the second mounting portion 22 may be provided with a plurality of grooves, that is, the second mounting portion 22 is provided with second reinforcing ribs, and the back surface of the second mounting portion 22 can be understood as the surface of the second reinforcing ribs.

[0063] Referring to Figures 5 to 8 As shown, in a disclosed embodiment, the second mounting portion 22 includes a back surface 222 and a bottom surface 223. Both the back surface 222 and the bottom surface 223 are planar. The back surface 222 is attached to the inner side wall of the mounting cavity, and the bottom surface 223 is attached to the bottom surface of the mounting cavity. In this way, the bottom surface and the inner side wall of the mounting cavity can limit the bottom and the back of the second mounting portion to prevent it from tilting backward.

[0064] Referring to Figures 5 to 8 As shown, in a disclosed embodiment, the second mounting portion 22 includes a back surface 222 and a bottom surface 223. Both the back surface 222 and the bottom surface 223 are planar. The back surface 222 is attached to the inner side wall of the mounting cavity, and the inner side wall of the mounting cavity can limit the back of the second mounting portion to prevent it from tilting backward.

[0065] Referring to Figure 9 As shown, in a disclosed embodiment, the thickness d of the second mounting portion 22 gradually increases from the end of the second mounting portion 22 away from the second hinge portion 21 to the end of the second mounting portion 22 close to the second hinge portion 21.

[0066] Referring to Figure 9 As shown, in a disclosed embodiment, the thickness d of the second mounting portion 22 gradually increases from the end of the second mounting portion 22 away from the second hinge portion 21 to the end of the second mounting portion 22 close to the second hinge portion 21. The second mounting portion 22 further includes a first surface 224. The first surface 224 is disposed opposite to the back surface of the second mounting portion 22, and the first surface 224 forms an angle α with the back surface of the second mounting portion 22, and the angle α is an acute angle.

[0067] Referring to Figure 9 As shown, exemplarily, the thickness d at the bottom surface position of the second mounting portion 22 is less than the thickness d at the position of the second mounting portion 22 close to the second hinge portion 21. That is to say, the thickness d of the second mounting portion 22 gradually becomes wider from the bottom surface to the top surface close to the second hinge portion 21.

[0068] Referring to Figure 9 As shown, exemplarily, the back surface and the bottom surface of the second mounting portion 22 can be disposed at approximately a right angle. The first surface 224 of the second mounting portion 22 is disposed at an acute angle α relative to the vertical direction. In this way, the cross-section of the second mounting portion 22 generally forms a right trapezoid, and the first surface 224 of the second mounting portion 22 is the hypotenuse of the right trapezoid.

[0069] The second mounting portion 22 of the hinge device in the related art is generally set such that a flat plate is inserted into a flat groove, which results in a gap between the second mounting portion and the flat groove, thereby causing the installation of the second mounting portion 22 and the flat groove to be not tight enough. In the hinge device of the present disclosure embodiment, by making the thickness of the second mounting portion 22 gradually increase from the end of the second mounting portion 22 away from the second hinge portion 21 to the end of the second mounting portion 22 close to the second hinge portion 21, and setting the first surface 224 of the second mounting portion 22 to form an acute angle with the back surface of the second mounting portion 22, that is to say, the second mounting portion 22 is integrally in a shape similar to a right trapezoid, the mounting cavity of the device body can be adaptively set as a right trapezoidal mounting groove, and there can be a gap between the bottom surface of the second mounting portion 22 and the mounting cavity, so as to ensure that the plug-in fit of the second mounting portion 22 is more compact and the gap is reduced.

[0070] In one disclosed embodiment, the first hinge seat 10 further includes a first mounting portion 12. The first hinge portion 11 and the second hinge portion 21 are arranged on the same central axis. The first hinge portion 11 and the second hinge portion 21 can be rotatably connected by a connecting shaft. The first mounting portion 12 and the second mounting portion 22 are respectively located on both sides of the central axis.

[0071] Exemplarily, the first mounting portion 12 and the second mounting portion 22 are respectively located on both sides of the central axis. For example, the first mounting portion 12 is integrally biased towards the left side of the central axis, and the second mounting portion 22 is integrally biased towards the right side of the central axis. Or, the first mounting portion 12 is integrally biased towards the right side of the central axis, and the second mounting portion 22 is integrally biased towards the left side of the central axis.

[0072] It should be noted that if the first mounting portion 12 is integrally biased towards the left side of the central axis, the first mounting portion 12 can partially extend to the right side of the central axis. The first mounting portion 12 and the second mounting portion 22 being respectively located on both sides of the central axis can be understood as the first mounting portion 12 and the second mounting portion 22 not being on the same plane as a whole.

[0073] Exemplarily, the first mounting portion 12 and the second mounting portion 22 are respectively on different sides of the first hinge seat and the second hinge seat. For example, when the opening and closing device is in the closed state, the second mounting portion 22 is arranged on the back side of the second hinge portion 21 close to the mounting cavity, and the first mounting portion 12 is arranged on the back side of the first hinge portion 11 away from the mounting cavity. It should be noted that as Figure 2 shown, the back surface of the mounting cavity can represent the surface on the opening and closing device body provided with the second mounting hole. The back surface of the mounting cavity is adapted to the back surface of the second mounting portion 22.

[0074] Refer to Figure 9As shown, in an exemplary embodiment, the thickness d of the second mounting portion 22 is 10 mm - 14 mm. Exemplarily, the thickness d of the second mounting portion 22 can be understood as the average thickness of the second mounting portion 22, or the thickness d of the second mounting portion 22 can also be understood as the thickness of all positions of the second mounting portion 22 in the height direction. For example, the thickness d of the second mounting portion 22 can be 10 mm, 10.8 mm, 11 mm, 12 mm, 13 mm, 14 mm, etc. The specific value of the thickness d of the second mounting portion 22 can be set according to actual usage requirements.

[0075] Referring to Figure 9 As shown, in an exemplary embodiment, the sum h of the heights of the back surface of the second mounting portion 22 and the back surface of the second hinge portion 21 is less than 40 mm. Exemplarily, the back surface of the second hinge portion 21 can represent the planar portion of the second hinge portion 21 adjacent to the second mounting portion 22. The sum h of the heights of the back surface of the second mounting portion 22 and the back surface of the second hinge portion 21 is less than 40 mm. If the back surfaces of the second mounting portion 22 and the second hinge portion 21 are designed too high, it will cause the installation box of the corresponding device body to be too high, which may affect the transportation of the opening and closing device and may also affect the internal structure of the opening and closing device body. Setting the sum of the heights of the back surfaces of the second mounting portion 22 and the second hinge portion 21 to be less than 40 mm is of appropriate size, which can save materials and facilitate transportation. On the other hand, the height dimension of the second mounting portion 22 can also be set as needed to ensure the stability of the hinge device.

[0076] Referring to Figures 5 to 11 As shown, in an exemplary embodiment, the first hinge seat 10 further includes a first mounting portion 12, and a first mounting hole 121 is provided on the first mounting portion 12. The first mounting hole 121 is used to cooperate with a fastener to fix the first mounting portion 12 on the door body of the opening and closing device. 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 is closed with the opening and closing device body, the first hinge portion 11 and the second hinge portion 21 can be regarded as being in the same plane.

[0077] Exemplarily, the number of both the first mounting hole 121 and the second mounting hole 221 can be multiple. For example, the number of the first mounting hole 121 can be three, and the number of the second mounting hole 221 can be two. The number, shape, and size of the first mounting hole 121 and the second mounting hole 221 can all be set according to actual usage requirements.

[0078] Referring to Figures 5 to 11As shown, in an exemplary embodiment, the first hinge seat 10 further includes a first mounting portion 12, the first mounting portion 12 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 integrally formed by injection molding, and the second hinge portion 21 and the second mounting portion 22 can be integrally formed by injection molding.

[0079] Referring to Figures 7 to 11 As shown, in an exemplary embodiment, the first hinge seat 10 further includes a first mounting portion 12, a first reinforcing rib 13 is provided on the first mounting portion 12, and a second reinforcing rib 23 is provided on the second mounting portion 22. Exemplarily, a second reinforcing rib 23 is provided on the second mounting portion 22, and the second reinforcing rib 23 is provided on the side where the second mounting portion 22 is in contact with the side wall of the mounting cavity. The number of the second reinforcing ribs 23 can be multiple, and the second reinforcing ribs 23 can be arranged in a cross-shaped regular pattern, and the second reinforcing ribs 23 cross to form a rhombus or square-shaped grid. The specific shape and number of the second reinforcing ribs 23 are not limited herein. The back surface formed by the second reinforcing ribs 23 as a whole is flat, and at least part of the second reinforcing ribs 23 overlaps the second hinge portion 21. The number of the first reinforcing ribs 13 can be multiple, and the first reinforcing ribs 13 can be arranged in a cross-shaped regular pattern. In the exemplary embodiment of the present disclosure, the reinforcing ribs are provided on the first mounting portion 12 and the second mounting portion 22, which can enhance the structural strength of the first mounting portion 12 and the second mounting portion 22.

[0080] Referring to Figures 1 to 4 As shown, in an exemplary embodiment, the hinge device 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 provided on one side of the first mounting portion 12 close to the second hinge portion 21, and the first limiting groove 32 is provided on one side of the second mounting portion 22 close to the first hinge portion 11, and the first limiting protrusion 31 and the first limiting groove 32 cooperate to define the maximum opening and closing angle of the door body of the opening and closing device.

[0081] The first limiting protrusion 31 is a block structure rather than a strip structure, so that it can be ensured that the hinge mechanism cannot fail within a certain door opening force range, and the hinge mechanism can fail but cannot break within a range exceeding a certain door opening force. For example, when the design requirement is to push the door with a force of 0 - 80N, the hinge mechanism cannot fail, so the first limiting protrusion 31 and the first limiting groove 32 are provided to achieve the limit. When the design requirement is to push the door with a force exceeding 80N, the hinge can fail, but it cannot be damaged and broken, and the first limiting protrusion is broken according to a force of about 80N. In this way, when pushing the door with a greater force, the hinge will not break, but only the hinge mechanism will rotate excessively and fail.

[0082] Referring to Figures 1 to 13As shown, in an exemplary embodiment, the hinge device further includes a piston 40, an elastic member 50, and a connecting shaft 60. The first hinge portion 11 has a first mating structure 113. The second hinge portion 21 is provided with a second receiving cavity 211 and a second opening 212. The piston 40 is disposed in the second receiving cavity 211. 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 can relatively reciprocate in the abutting state. The elastic member 50 is disposed in the second receiving cavity 211 and is located at an end of the piston 40 away from the second mating structure 41. The elastic member 50 can provide assistance for the abutting state. The connecting shaft 60 passes through the first hinge portion 11, the piston 40, the elastic member 50, and the second hinge portion 21 to axially fix the first hinge portion 11 and the second hinge portion 21 relative to each other.

[0083] Referring to Figures 1 to 11 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 communicated with the second opening 212. The first mating structure is disposed in the first receiving cavity 111. One end of the first hinge portion 11 provided with the first opening 112 is connected to one end of the second hinge portion 21 provided with the second opening 212.

[0084] In the hinge device of the present disclosure embodiment, since the elastic member 50 can provide assistance for the abutting state, during the process of closing the door body, the problem that the door body collides violently with the box body due to the rapid descent of the door body can be alleviated, improving the user experience. At the same time, both the piston 40 and the elastic member 50 are disposed in the second receiving cavity 211 of the second hinge seat 20. Moreover, the first hinge seat 10, the second hinge seat 20, the piston 40, and the elastic member 50 can be assembled and connected through the connecting shaft 60. The hinge device is simple and convenient to assemble, reducing the space occupied by the hinge device.

[0085] A first limiting structure 80 is disposed between the abutting surfaces of the first mating structure 113 and the second mating structure 41. The first limiting structure 80 includes a first limiting portion 81 located on the first mating structure 113 and a second limiting portion 82 located on the second mating structure 41. When the hinge device is in the initial state, the first limiting portion 81 and the second limiting portion 82 are in limiting cooperation.

[0086] Exemplarily, when the hinge device is in the initial state, the first limiting portion 81 and the second limiting portion 82 are in limiting cooperation to position the hinge device in the initial state, so that the initial state of the hinge device will not change due to transportation or other external forces. For example, when the included angle between the first hinge seat 10 and the second hinge seat 20 is less than 180°, the first limiting portion 81 and the second limiting portion 82 are in limiting cooperation. For example, when the included angle between the first hinge seat and the second hinge seat is 175°, the first limiting portion 81 and the second limiting portion 82 are in limiting cooperation. When the hinge device is actually assembled on the box body of the opening and closing device, when the door body is in normal use, the included angle range between the first hinge seat and the second hinge seat is greater than 180°. During normal use, the first limiting portion 81 and the second limiting portion 82 are in a misaligned state, so that the first limiting portion 81 and the second limiting portion 82 hardly play a role, thus avoiding affecting the normal use of the hinge device.

[0087] In the hinge device of the embodiment of the present disclosure, a first limiting structure 80 is provided between the abutting surfaces of the first mating structure 113 and the second mating structure 41, so as to realize the positioning of the initial state of the hinge device, thus avoiding the reduction of the structural strength of the second hinge seat caused by the protrusion falling off, and the first limiting structure 80 is hidden between the abutting surfaces of the first mating structure 113 and the second mating structure 41, avoiding affecting the overall appearance neatness and beauty of the hinge device.

[0088] Refer to Figure 5 、 Figures 11 to 13 As shown, in an exemplary embodiment, the second mating structure 41 includes a first helical surface 42 and a first top surface 43, the first mating structure 113 includes a first mating surface 114 and a second top surface 115. One end of the first top surface 43 is connected to the top end of the first helical surface 42. The first helical surface 42 and the first mating surface 114 cooperate with each other, and the first top surface 115 and the second top surface 115 correspond to each other. The first limiting portion 81 is provided on the second top surface 115, and the second limiting portion 82 is provided on the first top surface 43. When the hinge device is in the open state, the first helical surface 42 and the first mating surface 114 are in abutment.

[0089] In the hinge mechanism of the embodiment of the present disclosure, the first helical surface 42 is used to support the door body to reach a balanced state when opening the door, so that the door body realizes a hovering effect. The second limiting portion 82 is provided on the first top surface 43, and the first limiting portion 81 is provided on the second top surface 115. The first top surface 43 and the second top surface 115 cooperate to limit the relative positions of the first hinge seat 10 and the second hinge seat 20 before the hinge device is installed and used, preventing the hinge device from accidentally bouncing open during storage and transportation.

[0090] Refer to Figure 5 、 Figures 11 to 13As shown, exemplarily, the first limiting portion 81 is a convex portion, and the second limiting portion 82 is a concave portion adapted to the convex portion. Alternatively, the first limiting portion 81 is a concave portion, and the second limiting portion 82 is a convex portion adapted to the concave portion. It should be noted that the specific shapes and dimensions of the convex portion and the concave portion are not limited herein, as long as they can satisfy the initial state of the limiting and cooperating hinge mechanism.

[0091] Exemplarily, the cross-sectional shape of the concave portion is substantially circular, and the cross-sectional shape of the convex portion is substantially circular. The diameter of the concave portion is greater than or equal to the diameter of the convex portion. With such a setting, the convex portion can be more conveniently inserted into the concave portion, the assembly of the piston is easier, the fault tolerance is higher, and the effect is better.

[0092] Referring to Figure 11 and Figure 12 As shown, in an exemplary embodiment, a guiding groove 44 extending axially is provided on the side wall of the piston 40, and a corresponding guiding protrusion 213 is provided on the side wall of the second receiving cavity 211. The guiding protrusion 213 is disposed in the guiding groove 44. When the opening and closing device is at the maximum door opening angle, the guiding protrusion 213 abuts against the limiting protrusion 115, which can assist in limiting the maximum angle of the opening door.

[0093] In an exemplary embodiment, the hinge device further includes a fastener, and the fastener is connected to both ends of the connecting shaft 60 to relatively fix the first hinge seat 10 and the second hinge seat 20 axially.

[0094] Referring to Figure 1 and Figure 2 As shown, in an exemplary embodiment, the hinge device further includes a gasket 70. The center of the gasket 70 has a non-circular hole 71, and the end of the connecting shaft 60 penetrates into the non-circular hole 71 and is riveted to the gasket 70.

[0095] Referring to Figure 1 and Figure 2 As shown, exemplarily, the center of the gasket 70 has a polygonal hole, and the end of the connecting shaft 60 penetrates into the polygonal hole and is riveted to the gasket. For example, the polygonal hole of the gasket 70 is a regular hexagon. With such a setting, when the connecting shaft 60 is riveted to the gasket 70, the relative fixation between the gasket 70 and the connecting shaft 60 can be ensured, playing a limiting role and avoiding damage. Because continuous friction may occur when the connecting shaft 60 and the gasket 70 rotate relative to each other, which may cause strength problems, such as grinding off the riveting part, thus affecting the strength of the hinge device. However, in the exemplary embodiment of the present disclosure, setting the non-circular hole as a polygonal hole can avoid damage.

[0096] Referring to Figure 13As shown, in an open embodiment, the piston 40 is provided with weight-reducing holes 45. The number of weight-reducing holes 45 can be one or more, and multiple weight-reducing holes 45 are arranged at intervals in the circumferential direction based on the central axis of the piston 40 itself. Such a setting can reduce the weight of the piston 40 and the hinge device, and avoid injection molding defects generated during the solid injection molding of the piston 40.

[0097] Referring to Figure 5 and Figure 13 As shown, in an open embodiment, a first positioning protrusion 46 is provided along the center at the bottom end of the piston 40, and the first positioning protrusion 46 is used to position the elastic member 50. A second positioning protrusion 214 is provided along the center at the bottom end of the second accommodation cavity 211, and the second positioning protrusion 214 is used to position the elastic member 50.

[0098] For the hinge device of the present disclosure embodiment, by positioning the elastic member 50 through the first positioning protrusion 46 and the second positioning protrusion 214, the shaking of the elastic member 50 can be prevented, and the wear of the elastic member 50 can be reduced. Moreover, when a counterbore 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 play a role in improving the structural strength of the second hinge seat 20.

[0099] Referring to Figure 1 、 Figure 2 and Figure 14 As shown, the present disclosure embodiment also provides an opening and closing device, which includes a device main body 200 and a door body. The device main body 200 is provided with a third opening, and an installation cavity 201 recessed toward the inside of the device main body is provided on the outer side wall of the device main body 200, and the installation cavity 201 is provided with a fourth opening 202 facing the outside of the device main body 200. The door body is openably connected to the third opening of the device main body 200 through the hinge device 100 according to any one of the present disclosure embodiments. The first hinge seat 10 is connected to the side wall of the door body, the second hinge portion 21 is at least partially located in the installation cavity 201, the second installation portion 22 is installed and embedded in the installation cavity 201, and the second installation portion 22 is fixedly connected to the device main body 200 by a fastener passing through the second installation hole 221, which ensures the stability of the connection between the second hinge seat 20 and the opening and closing device main body. In the present disclosure embodiment, by further embedding the second installation portion 22 in the installation cavity 201 of the opening and closing device main body 200, the installation cavity 201 can further play a role in limiting the second installation portion 22, so that the hinge device does not lean backward after being stressed, achieving the anti-backward tilting effect, improving the stability and reliability of the hinge device, and preventing the hinge device from loosening after long-term use.

[0100] Referring to Figure 14As shown, exemplarily, the installation cavity 201 includes a first cavity and a second cavity, and the first cavity and the second cavity are respectively communicated with the outer side wall of the device main body. The first cavity and the second cavity are arranged along the axis direction of the hinge device and are communicated. The first hinge portion 11 is installed through the first cavity. A part of the first hinge portion 11 is located inside the first cavity, and a part of the first hinge portion 11 extends out of the first cavity. The second installation portion 22 is located inside the second cavity, and at least a part of the second hinge portion 21 is located in the second cavity.

[0101] Referring to Figure 14 As shown, in an exemplary embodiment, the installation cavity 201 includes a first part 201a and a second part 201b. The second part 201b is located at the lower end of the first part 201a. At least a part of the second hinge portion 21 is located inside the first part 201a, and the second installation portion 22 is clamped inside the second part 201b.

[0102] Referring to Figure 14 As shown, in an exemplary embodiment, an edge portion 203 is convexly provided on the periphery of the fourth opening 202. The edge portion 203 and the second part 201b together form a clamping groove. The clamping groove is located on the side of the installation cavity 201 away from the fourth opening 202, and the second installation portion 22 is embedded in the clamping groove. The edge portion 203 is located inside the second part 201b. The edge portion 203 and the second part 201b together define and form the clamping groove, and the second installation portion 22 is fixedly installed through the clamping groove.

[0103] Exemplarily, the opening and closing device can be a freezer. For example, the opening and closing device can be a horizontal freezer with an upward-opening door, or the opening and closing device can also be other devices that can be opened and closed, such as a dishwasher or a storage locker, etc.

[0104] The above detailed description is a specific description of the feasible embodiments of the present invention. These embodiments are not intended to limit the protection scope of the present invention. Any equivalent implementation or modification made without departing from the present invention shall be included in the protection scope of the present invention.

Claims

1. A hinge device, characterized in that, include A first hinge seat, comprising a first hinge portion; The second hinged seat includes a second hinged portion and a second mounting portion. The second hinged portion is rotatably connected to the first hinged portion. The second mounting portion is used to be installed and embedded in the mounting cavity of the opening and closing device body. The second mounting portion is provided with a second mounting hole. The second mounting hole is used to cooperate with a fastener to fix the second mounting portion to the opening and closing device body.

2. The hinge device according to claim 1, characterized in that The thickness of the second mounting portion is smaller than the diameter of the second hinged portion, and the step difference between the back surface of the second mounting portion and the back surface of the second hinged portion is smaller than or equal to a preset value.

3. The hinge device according to claim 2, wherein, The back side of the second mounting portion is planar, and the back side of the second mounting portion is in contact with the inner wall of the mounting cavity; and / or, the thickness of the second mounting portion gradually increases from an end of the second mounting portion away from the second hinged portion to an end of the second mounting portion close to the second hinged portion; and / or, the second mounting portion also includes a first surface, which is arranged opposite to the back side of the second mounting portion, and the first surface and the back side of the second mounting portion are arranged at an angle, and the angle is an acute angle.

4. The hinge device according to claim 2, characterized in that, The thickness of the second mounting portion is 10 mm-14 mm; and / or the sum of the heights of the back side of the second mounting portion and the back side of the second hinged portion is less than 40 mm.

5. The hinge device according to claim 1, characterized in that The first hinge seat also includes a first mounting portion. When the opening and closing device is in a closed state, the second mounting portion is arranged on the side of the second hinge portion close to the back of the mounting cavity, and the first mounting portion is arranged on the side of the first hinge portion away from the back of the mounting cavity.

6. The hinge device according to claim 1, wherein, The first hinge seat further comprises a first mounting portion, the first mounting portion is provided with a first mounting hole, the first mounting hole is used to cooperate with a fastener to fix the first mounting portion on the door body of the opening and closing device; and / or, The first hinge seat further comprises a first mounting portion, the first mounting portion and the first hinge portion are integrally formed, and the second mounting portion and the second hinge portion are integrally formed; and / or, The first hinge seat also includes a first mounting portion, the first mounting portion is provided with a first reinforcing rib, and the second mounting portion is provided with a second reinforcing rib.

7. The hinge device according to claim 6, wherein The hinge device also includes a second limiting structure, which includes a first limiting protrusion and a first limiting groove. The first limiting protrusion is arranged on a side of the first mounting part close to the second hinge part, and the first limiting groove is arranged on a side of the second mounting part close to the first hinge part. When the door body of the opening and closing device is at the maximum opening and closing angle, the limiting protrusion is at least partially clamped and pressed into the limiting groove.

8. The hinge device according to any one of claims 1 to 7, characterized in that, The hinge device also includes: The first hinged portion has a first matching structure, the second hinged portion is provided with a second accommodating cavity and a second opening, the piston is provided in the second accommodating cavity, the piston has a second matching structure, and the second matching structure abuts against the first matching structure through the second opening; an elastic member, the elastic member being disposed in the second accommodating cavity and located at an end of the piston away from the second matching structure, the elastic member being capable of providing assistance for the abutting state; A connecting shaft passes through the first hinge portion, the piston, the elastic member, and the second hinge portion, so that the first hinge portion and the second hinge portion are axially fixed relative to each other.

9. The hinge device according to claim 8, characterized in that, A first limiting structure is provided between the abutting surfaces of the first matching structure and the second matching structure. The first limiting structure includes a first limiting portion located on the first matching structure and a second limiting portion located on the second matching structure. When the hinge device is in the initial state, the first limiting portion and the second limiting portion are in limiting cooperation.

10. The hinge device according to claim 9, characterized in that, The second matching structure includes a first spiral surface and a first top surface. The first matching structure includes a first matching surface and a second top surface. One end of the first top surface is connected to the top end of the first spiral surface. The first spiral surface and the first matching surface cooperate with each other. The first top surface and the second top surface correspond to each other. The first limiting portion is provided on the second top surface, and the second limiting portion is provided on the first top surface. When the hinge device is in the open state, the first spiral surface and the first matching surface are in abutment.

11. The hinge device according to claim 9, characterized in that, The first limiting portion is a convex portion, and the second limiting portion is a concave portion adapted to the convex portion, or the first limiting portion is a concave portion, and the second limiting portion is a convex portion adapted to the concave portion; the diameter of the concave portion is greater than or equal to the diameter of the convex portion.

12. The hinge device according to claim 8, wherein Axially extending guide grooves are provided on the side wall of the piston, and corresponding guide protrusions are provided on the side wall of the second accommodating cavity. The guide protrusions are arranged in the guide grooves; and / or, The hinge device further includes a fastener, and the fastener is connected to both ends of the connecting shaft, so that the first hinge seat and the second hinge seat are axially fixed relative to each other; and / or, The hinge device further includes a gasket. The center of the gasket has a non-circular hole, and the end of the connecting shaft penetrates into the non-circular hole and is riveted to the gasket; or the center of the gasket has a polygonal hole, and the end of the connecting shaft penetrates into the polygonal hole and is riveted to the gasket; and / or, The piston is provided with a weight-reducing hole; and / or, A first positioning protrusion is provided along the center at the bottom end of the piston, and the first positioning protrusion is used to position the elastic member; and / or, A second positioning protrusion is provided along the center at the bottom end of the second accommodating cavity, and the second positioning protrusion is used to position the elastic member.

13. An opening and closing device, characterized in that, The opening and closing device includes: A device main body is provided with a third opening. A mounting cavity recessed towards the inside of the device main body is provided on the outer side wall of the device main body, and the mounting cavity is provided with a fourth opening facing the outside of the device main body; A door body, the door body is openably and closably connected to a third opening of the device main body through the hinge device according to any one of claims 1 to 12, the first hinge seat is connected to a side wall of the door body, at least part of the second hinge portion is located in the installation cavity, the second installation portion is installed and embedded in the installation cavity, and the second installation portion is fixedly connected to the device main body by a fastener passing through the second installation hole.

14. The opening and closing device according to claim 13, characterized in that, The installation cavity includes a first part and a second part, the second part is located at the lower end of the first part, at least part of the second hinge portion is located in the first part, and the second installation portion is snap-fitted in the second part.

15. The opening and closing device according to claim 14, characterized in that, An edge portion is protrudingly provided on the periphery of the fourth opening, the edge portion and the second part form a card slot, the card slot is located on a side of the installation cavity away from the fourth opening, and the second installation portion is embedded in the card slot.

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