Hinge fixing seat, hinge mechanism and opening and closing equipment

Abstract

The embodiment of the utility model discloses a hinge fixing seat, a hinge mechanism and opening and closing equipment, the hinge fixing seat is used for being connected with a device main body of the opening and closing equipment, the hinge fixing seat comprises a first hinge main body part, a first shell connecting part and a limiting fixing structure, and the first hinge main body part is provided with a first containing cavity in the axial direction in a penetrating mode; one end of the first shell connecting part is connected with the first hinge body part, the extending direction of the first shell connecting part is perpendicular to the axial direction of the first hinge body part, and the first shell connecting part and the device body are connected in a clamped mode through a limiting fixing structure. According to the embodiment of the invention, the hinge fixing seat can be conveniently mounted and dismounted, the convenience of the hinge fixing seat is improved, fasteners such as screws do not need to be used, and the aesthetic degree after the whole hinge fixing seat is mounted is improved.

Description

Technical Field

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

[0002] A hinge mechanism can be installed on a door body to realize the opening and closing of the door body. Exemplarily, the hinge mechanism can include a fixing seat connected to a cabinet body, a rotating seat connected to the door body, and a core shaft passing through the fixing seat and the rotating seat. In the related art, both the rotating seat and the fixing seat are fixed by fasteners such as screws. However, since the fixing seat is fixed to the cabinet body by screws, the installation and fixing process is relatively cumbersome, thus reducing the convenience of the hinge mechanism. Summary of the Utility Model

[0003] Embodiments of the present disclosure provide a hinge fixing seat, a hinge mechanism, and an opening and closing device to solve or alleviate one or more technical problems in the prior art:

[0004] As a first aspect of the embodiments of the present disclosure, the embodiments of the present disclosure provide a hinge fixing seat for connecting to a device main body of an opening and closing device, including:

[0005] A first hinge main body portion, the first hinge main body portion is provided with a first accommodation cavity along a first direction, and the first direction is the axial direction of the first hinge main body portion;

[0006] A first housing connection portion, one end of the first housing connection portion is connected to the first hinge main body portion, and the extending direction of the first housing connection portion is perpendicular to the first direction;

[0007] A limit fixing structure, the first housing connection portion and the device main body are snap-connected through the limit fixing structure.

[0008] In some possible implementation manners, the first hinge main body portion is cylindrical, a first accommodation space is formed at an interval from the bottom of the first housing connection portion relative to the first hinge main body portion, and the limit fixing structure is located in the first accommodation space or the limit fixing structure surrounds the outer peripheral side of the first accommodation space.

[0009] In some possible implementation manners, the limit fixing structure includes a first limit portion, a second limit portion, and a third limit portion. The first limit portion is used to limit the freedom degree of the first housing connection portion in the horizontal direction and perpendicular to the first direction, the second limit portion is used to limit the freedom degree of the first housing connection portion in the horizontal direction and along the first direction, and the third limit portion is used to limit the freedom degree of the first housing connection portion in the vertical direction.

[0010] In some possible implementation manners, a first reinforcing cavity is provided at the bottom of the first housing connection part, a first reinforcing protrusion corresponding to the first reinforcing cavity is provided on the device body, the first reinforcing protrusion can be inserted into the first reinforcing cavity, and the first reinforcing cavity forms a first limiting part; and / or,

[0011] The first hinge main body part is provided with second reinforcing protrusions at intervals along a first direction, the device body is provided with a plurality of third reinforcing protrusions at intervals along the first direction, the second reinforcing protrusions are inserted into a limiting space formed by the third reinforcing protrusions, and the second reinforcing protrusions form a second limiting part; and / or,

[0012] A buckle plate is vertically extended and provided below the first housing connection part, the buckle plate extends along a direction perpendicular to the first direction, a clamping groove matching with the buckle plate is provided on the device body, the buckle plate is in clamping fit with the clamping groove, and the buckle plate forms the third limiting part.

[0013] In some possible implementation manners, the number of the first reinforcing cavities is multiple, and the multiple first reinforcing cavities are arranged in sequence along the first direction.

[0014] In some possible implementation manners, an extension plate is provided at the bottom of the first housing connection part, the extension plate extends along the first direction, a second accommodating space is formed between the extension plate and the first hinge main body part, and at least one partition plate is connected between the extension plate and the first hinge main body part, and the partition plate divides the second accommodating space to form the first reinforcing cavity.

[0015] In some possible implementation manners, the second reinforcing protrusions are located in the first reinforcing cavities, at least two second reinforcing protrusions are provided in each first reinforcing cavity, the second reinforcing protrusions are arranged at intervals in the first reinforcing cavity, one end of the third reinforcing protrusion is connected to the first reinforcing protrusion, and the third reinforcing protrusion is arc-shaped.

[0016] In some possible implementation manners, the buckle plate includes a first wing plate in a straight plate shape, a first protruding part protrudes from the outer side of the first wing plate facing the clamping groove, a first limiting groove is provided on the inner wall of the clamping groove on the side facing the first protruding part, and the first protruding part is in limiting fit with the first limiting groove; or,

[0017] The buckle plate includes a second wing plate in a U shape, the second wing plate includes a first sub-plate and a second sub-plate, the first sub-plate is connected to the first housing connection part, a second protruding part protrudes from the outer side of the second sub-plate facing the clamping groove, a second limiting groove is provided on the inner wall of the clamping groove on the side facing the second protruding part, and the second protruding part is in limiting fit with the second limiting groove.

[0018] In some possible implementations, the first protrusion is arranged in a prismatic shape, and the distance between the first protrusion and the first wing plate gradually increases from the bottom to the top of the first wing plate, the surface of the first limiting groove opposite to the prismatic surface of the first protrusion is arranged as a prismatic surface, the sliding surface of the first limiting groove is arranged as a prismatic surface, and the upper side of the sliding surface of the first limiting groove is arranged at a certain distance from the first wing plate; or

[0019] The second protrusion is arranged in a prismatic shape, and the distance between the second protrusion and the second sub-plate gradually increases from the bottom to the top of the second sub-plate, the surface opposite to the prismatic surface of the second limiting groove and the second protrusion is arranged as a prismatic surface, and the sliding surface of the second limiting groove is arranged as a prismatic surface.

[0020] In some possible implementations, a plurality of first reinforcing ribs are disposed on a side of the first shell connecting portion that is away from the device body, the plurality of first reinforcing ribs are extended along a length direction of the first shell connecting portion, and the plurality of first reinforcing ribs are disposed at intervals.

[0021] In some possible implementations, a second reinforcing rib is further provided on a side of the first shell connecting portion facing away from the device body, the second reinforcing rib is connected between adjacent first reinforcing ribs, and the second reinforcing ribs are cross-arranged.

[0022] As a second aspect of an embodiment of the present disclosure, an embodiment of the present disclosure provides a hinge mechanism, including:

[0023] The hinge fixing seat of any embodiment of the present disclosure, wherein the first shell connecting portion of the hinge fixing seat is connected to the device body;

[0024] The hinge rotating seat comprises a second hinge main body and a second shell connecting portion, the second hinge main body is rotatably connected to the first hinge main body, the second hinge main body is axially penetrated to form a second accommodating cavity, and the second shell connecting portion is used to connect to the door body of the opening and closing device;

[0025] The piston, the first hinge body is provided with a first matching structure, the second hinge body is provided with an 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 opening;

[0026] 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;

[0027] A connecting shaft is provided through the first hinge body, the piston, the elastic member and the second hinge body, so that the first hinge body and the second hinge body are relatively fixed along the axial direction.

[0028] In some possible implementations, the hinge mechanism further includes a limiting structure, which includes a limiting protrusion and a limiting groove. The limiting protrusion is disposed on a side of the first housing connection portion close to the hinge rotating seat, and the limiting groove is disposed on a surface of the second housing connection portion facing away from the device body. When the door body of the opening and closing device is at the maximum opening and closing angle, at least a part of the limiting protrusion is clamped and pressed into the limiting groove.

[0029] In some possible implementations, a first positioning is provided on the top surface of the first mating structure, and a second positioning is provided on the top surface of the second mating structure. The first positioning and the second positioning cooperate to position the initial state of the hinge mechanism.

[0030] As a third aspect of the embodiments of the present disclosure, the embodiments of the present disclosure provide an opening and closing device, including:

[0031] A device body having an opening, and the device body is snap - connected to the first housing connection portion of the hinge mechanism according to any embodiment of the present disclosure through a limiting and fixing structure;

[0032] A door body, which is hinged to the opening of the device body through a hinge rotating seat of the hinge mechanism according to any embodiment of the present disclosure.

[0033] The technical solution of the embodiments of the present disclosure can achieve the following beneficial effects: The embodiments of the present disclosure can facilitate the installation and disassembly of the hinge fixing seat, improve the convenience of the hinge fixing seat, and do not require the use of fasteners such as screws, thereby improving the aesthetics after the overall installation.

[0034] The above summary is only for the purpose of the specification and is not intended to be limiting in any way. In addition to the above - described illustrative aspects, embodiments, and features, further aspects, embodiments, and features of the present disclosure will become apparent by reference to the drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In the drawings, unless otherwise specified, the same reference numerals throughout the several views denote the same or similar components or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments in accordance with the present disclosure and should not be regarded as limiting the scope of the present disclosure.

[0036] Figure 1 Schematic diagram of the hinge fixing seat and the device body according to the embodiments of the present disclosure;

[0037] Figure 2 Schematic diagram of the hinge fixing seat according to the embodiments of the present disclosure;

[0038] Figure 3Schematic diagram of another perspective structure of the hinge fixing seat according to an embodiment of the present disclosure;

[0039] Figure 4 Schematic diagram of the back structure of the hinge fixing seat according to an embodiment of the present disclosure;

[0040] Figure 5 Schematic diagram of the main body structure of the device according to an embodiment of the present disclosure;

[0041] Figure 6 Schematic diagram of the hinge mechanism and the main body structure of the device according to an embodiment of the present disclosure;

[0042] Figure 7 It is Figure 6 Schematic diagram of the A-A cross-section of;

[0043] Figure 8 Schematic diagram of the hinge mechanism and the main body structure of the device according to an embodiment of the present disclosure;

[0044] Figure 9 It is Figure 8 Schematic diagram of the B-B cross-section of;

[0045] Figure 10 Schematic diagram of the hinge fixing seat structure according to another embodiment of the present disclosure;

[0046] Figure 11 Schematic diagram of the assembly structure of the hinge mechanism and the main body of the device according to an embodiment of the present disclosure;

[0047] Figure 12 Schematic diagram of the exploded structure of the hinge mechanism and the main body of the device according to an embodiment of the present disclosure. Detailed implementation manners

[0048] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present disclosure. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0049] In the related art, a hinge mechanism includes a hinge fixed seat and a hinge rotating seat. The hinge fixed seat includes a first hinge main body portion and a first housing connection portion, and the hinge rotating seat includes a second hinge main body portion and a second housing connection portion. A first mounting hole is provided on the first housing connection portion, and a second mounting hole is provided on the second housing connection portion. Screws pass through the first mounting hole to connect the hinge fixed seat to the device main body of the opening and closing device, and screws pass through the second mounting hole to connect the hinge rotating seat to the door body of the opening and closing device. In order to install the hinge fixed by screws in the related art, screw holes are provided on the device main body. In order to prevent the leakage of foam or foaming glue, the screws need to be pre-installed on the device main body during foaming to block the screw holes. At this time, the hinge has not been installed yet. After the box body is foamed, the pre-installed screws must be removed again to prepare for the installation of the hinge. Finally, when installing the hinge, the hinge is fixed with screws again, that is, the screws of the hinge need to be installed, removed, and installed again. This results in a cumbersome workflow in the installation process of the hinge fixed seat, reducing the convenience of the hinge fixed seat. Moreover, structures such as screws are exposed, and when applied to opening and closing devices such as freezers, they may be easily corroded by the environment, and further affect the overall aesthetics of the opening and closing device

[0050] In order to solve the problem of inconvenient installation of the hinge fixed seat in the related art, the embodiments of the present disclosure provide a hinge fixed seat, a hinge mechanism, and an opening and closing device. The hinge fixed seat of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings

[0051] Figure 1 Schematic diagram of the structure of the hinge fixed seat and the device main body of the embodiment of the present disclosure; Figure 2 Schematic diagram of the structure of the hinge fixed seat of the embodiment of the present disclosure; Figure 3 Schematic diagram of the structure of the hinge fixed seat from another perspective of the embodiment of the present disclosure; Figure 4 Schematic diagram of the back structure of the hinge fixed seat of the embodiment of the present disclosure; Figure 5 Schematic diagram of the structure of the device main body of the embodiment of the present disclosure; Figure 6 Schematic diagram of the structure of the hinge mechanism and the device main body of the embodiment of the present disclosure; Figure 7 For Figure 6 Schematic diagram of the A-A cross-section of. Refer to Figures 1 to 7As shown in the figure, an embodiment of the present disclosure provides a hinge fixing seat 10, which is used to connect to the device main body 20 of an opening and closing device. Specifically, the hinge fixing seat 10 includes a first hinge main body portion 11, a first housing connection portion 12, and a limit fixing structure 13. The first hinge main body portion 11 is provided with a first accommodation cavity 111 along a first direction X, and the first direction X is the axial direction of the first hinge main body portion 11. One end of the first housing connection portion 12 is connected to the first hinge main body portion 11, and the extending direction of the first housing connection portion 12 is perpendicular to the first direction X. The first housing connection portion 12 and the device main body 20 are snap-connected through the limit fixing structure 13.

[0052] Exemplarily, the opening and closing device can be a freezer, a door or window (such as a car door), or a folding furniture. For example, when the opening and closing device is a freezer, the device main body 20 can be the cabinet of the freezer, and the hinge fixing seat 10 can be connected and installed on the cabinet.

[0053] Exemplarily, the first hinge main body portion 11 is cylindrically shaped, and the first accommodation cavity 111 is arranged along the axis of the first hinge main body portion 11 (the first direction X). The first accommodation cavity 111 can be used to install a connecting shaft and other structures. The specific dimensions of the first accommodation cavity 111 can be set according to actual usage requirements. One end of the first housing connection portion 12 is connected to the first hinge main body portion 11. For example, the first housing connection portion 12 can be plate-shaped, and the first housing connection portion 12 is connected to the side surface of the first hinge main body portion 11. The first housing connection portion 12 and the first hinge main body portion 11 can be understood as integrally formed, or the first housing connection portion 12 and the first hinge main body portion 11 can also be separately prepared and then fixed. The first housing connection portion 12 is snap-connected to the device main body 20 through the limit fixing structure 13, and no fasteners such as screws are required to fix between the first housing connection portion 12 and the device main body 20. It should be noted that the specific shape and dimensions of the first housing connection portion 12 are not limited herein and can be set according to actual usage requirements.

[0054] In the related art, a first mounting hole is provided on the first housing connection portion 12, and a screw passes through the first mounting hole to connect to the device main body 20. In order to prevent the foaming agent from leaking, the screw needs to be installed in advance to block the screw hole. After the device main body is foamed, the screw is removed, and finally the hinge is fixed with the screw. This results in a cumbersome installation process of the hinge fixing seat and inconvenient use. Moreover, the screws and the like may be exposed, which not only affects the overall aesthetics of the opening and closing device, but also the screws may be corroded due to the use environment of the freezer. In the hinge fixing seat of the embodiment of the present disclosure, the first housing connection portion 12 and the device main body 20 are snap-connected through the limit fixing structure 13, which not only facilitates the installation and disassembly of the hinge fixing seat, but also does not require the use of fasteners such as screws, improving the aesthetic degree after the hinge fixing seat is fixed and further meeting the user's usage requirements.

[0055] Referring to Figure 4 and Figure 7 As shown, in an exemplary embodiment, the first hinge body portion 11 is cylindrical. A first accommodation space is formed at an interval from the bottom of the first hinge body portion 11 in the first housing connection portion 12. The limit fixing structure 13 is located in the first accommodation space or the limit fixing structure is disposed around the outer peripheral side of the first accommodation space.

[0056] Referring to Figure 4 and Figure 7 As shown, exemplarily, when the axis of the first hinge body portion 11 is cylindrical and parallel to the horizontal direction, the opposite ends of the first hinge body portion 11 in the vertical direction are the bottom and the top. The first housing connection portion 12 is disposed between the bottom and the top of the first hinge body portion 11, and a first accommodation space is formed between the first housing connection portion 12 and the bottom of the first hinge body portion 11. That is to say, there is a certain distance between the bottom of the first housing connection portion 12 and the bottom of the first hinge body portion 11. The first accommodation space can be understood as the lower space of the first housing connection portion 12. The limit fixing structure 13 is located in the first accommodation space. With such a setting, after the hinge fixing seat is fixed to the device body, the limit fixing structure 13 can be hidden in the first accommodation space formed by the first housing connection portion 12, which improves the overall aesthetics after the hinge fixing seat is fixed and further meets the user's usage requirements.

[0057] Exemplarily, the limit fixing structure can also be disposed on the outer side edge of the first housing connection portion. For example, the limit fixing structure can be located on the left and right side edges of the first housing connection portion, or the limit fixing structure can also be disposed on the side edge of the first housing connection portion away from the first hinge body portion.

[0058] Referring to Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, in an exemplary embodiment, the limit fixing structure 13 includes a first limiting portion 13a, a second limiting portion 13b, and a third limiting portion 13c. The first limiting portion 13a is used to limit the degree of freedom of the first housing connection portion 12 in the horizontal direction and perpendicular to the first direction X. The second limiting portion 13b is used to limit the degree of freedom of the first housing connection portion 12 in the horizontal direction and along the first direction X. The third limiting portion 13c is used to limit the degree of freedom of the first housing connection portion 12 in the vertical direction Z.

[0059] Referring to Figure 1 and Figure 2As shown, exemplarily, the first limiting portion 13a is configured to limit the degree of freedom of the first housing connection portion 12 in the horizontal direction and perpendicular to the first direction X, and the first limiting portion 13a is configured to limit the degree of freedom of the first housing connection portion 12 in the second direction Y. The first limiting portion 13a is located on the first housing connection portion 12, and a limiting structure corresponding to the first limiting portion 13a is provided on the device main body 20. The specific structures of the first limiting portion 13a and the limiting structure on the device main body 20 can be set according to actual usage requirements, as long as the degree of freedom of the first housing connection portion 12 in the second direction Y can be limited.

[0060] Referring to Figure 1 and Figure 2 As shown, exemplarily, the second limiting portion 13b is configured to limit the degree of freedom of the first housing connection portion 12 in the horizontal direction and along the first direction, and the second limiting portion 13b is configured to limit the degree of freedom of the first housing connection portion 12 in the first direction X. The second limiting portion 13b is located on the first housing connection portion 12 or the first hinge main body portion 11, and a limiting structure corresponding to the second limiting portion 13b is provided on the device main body. The specific structure of the second limiting portion 13b can be set according to actual usage requirements, as long as the degree of freedom of the first housing connection portion 12 in the first direction X can be limited.

[0061] Referring to Figure 1 As shown, exemplarily, the third limiting portion 13c is configured to limit the degree of freedom of the first housing connection portion 12 in the vertical direction. The third limiting portion 13c is located on the first housing connection portion 12, and a limiting structure corresponding to the third limiting portion 13c is provided on the device main body 20. The specific structure of the third limiting portion 13c can be set according to actual usage requirements, as long as the degree of freedom of the first housing connection portion 12 in the vertical direction can be limited.

[0062] For the hinge fixing seat of the embodiment of the present disclosure, the limiting and fixing structure 13 limits and fixes the hinge fixing seat to the device main body through the first limiting portion 13a, the second limiting portion 13b, and the third limiting portion 13c, facilitating the installation and disassembly of the hinge fixing seat.

[0063] Referring to Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, in an embodiment of the disclosure, a first reinforcing cavity 121 is provided at the bottom of the first housing connection portion 12, and a first reinforcing protrusion 21 corresponding to the first reinforcing cavity 121 is provided on the device main body 20. The first reinforcing protrusion 21 can be inserted into the first reinforcing cavity 121, and the first reinforcing cavity 121 forms the first limiting portion 13a.

[0064] Exemplarily, the first reinforcing protrusion 21 on the device main body 20 of the opening and closing device is adapted to the first reinforcing cavity 121 provided at the bottom of the first housing connection portion 12. When the first housing connection portion 12 of the hinge fixing seat is connected to the device main body 20, the first reinforcing protrusion 21 is inserted into the first reinforcing cavity 121. Such a setting can increase the connection strength between the hinge fixing seat and the device main body. Moreover, when the hinge fixing seat is applied to the opening and closing device, the first reinforcing protrusion 21 of the device main body 20 can limit the hinge fixing seat through the first reinforcing cavity 121, so that the hinge will not lean backward after being stressed, achieving the anti-backward tilting effect, and making the hinge mechanism stable and reliable without loosening. The first reinforcing cavity 121 can be formed by the first hinge main body portion 11, the first housing connection portion 12, and the extension plate, and the hole of the first reinforcing cavity 121 can be generally in the shape of a tapered hole.

[0065] The first limiting portion 13a of the embodiment of the present disclosure includes the first reinforcing cavity 121. The hole wall of the first reinforcing cavity 121 can block the movement of the first reinforcing protrusion 21 in the second direction, so that the first reinforcing protrusion 21 and the first reinforcing cavity 121 cooperate to limit and fix the freedom degree of the first housing connection portion 12 in the second direction. Moreover, the first reinforcing cavity 121 and the first reinforcing protrusion 21 can also increase the connection strength between the hinge fixing seat and the device main body. The first reinforcing protrusion 21 can limit the hinge fixing seat through the first reinforcing cavity 121, so that the hinge will not lean backward after being stressed, achieving the anti-backward tilting effect.

[0066] Referring to Figure 1 、 Figure 2 、 Figure 4 and Figure 5 As shown in, in an embodiment of the disclosure, the second reinforcing protrusions 112 are arranged at intervals along the first direction X on the first hinge main body portion 11, and a plurality of third reinforcing protrusions 22 are arranged at intervals along the first direction X on the device main body 20. The second reinforcing protrusions 112 are inserted into the limiting space formed by the third reinforcing protrusions 22, and the second reinforcing protrusions 112 form the second limiting portion 13b.

[0067] Exemplarily, the second reinforcing protrusions 112 are arranged at intervals along the first direction X. One end of the second reinforcing protrusion 112 is connected to the first hinge main body portion 11. The third reinforcing protrusions 22 are arranged at intervals along the first direction X, and a limiting space is formed between adjacent third reinforcing protrusions 22. The second reinforcing protrusions 112 are inserted into the limiting space formed by the third reinforcing protrusions 22, and the second reinforcing protrusions 112 are limited in the freedom degree in the first direction by the third reinforcing protrusions 22 on both sides.

[0068] Referring to Figures 1 to 5As shown, in an exemplary embodiment, a snap plate 122 is disposed extending downward from the first housing connection portion 12. The snap plate 122 extends along a direction perpendicular to the first direction X. A card slot 23 matching the snap plate 122 is provided on the device body 20. The snap plate 122 is in snap-fit engagement with the card slot 23, and the snap plate 122 forms a third limiting portion 13c.

[0069] Exemplarily, the snap plates 122 are located at opposite sides below the first housing connection portion 12. The two snap plates 122 are disposed opposite to each other and perpendicular to the first housing connection portion 12. The snap plate 122 extends along a direction perpendicular to the first direction X. That is to say, the snap plate 122 extends along the long side of the first housing connection portion 12. A card slot 23 matching the snap plate 122 is provided on the device body 20. The snap plate 122 can be snap-fitted into the card slot 23, so as to limit and fix the first housing connection portion 12 in the vertical direction Z.

[0070] It should be noted that the specific structures of the snap plate 122 and the card slot 23 can be set according to actual usage requirements and are not limited herein.

[0071] Refer to Figures 1 to 5 As shown, in an exemplary embodiment, a first reinforcing cavity 121 is provided at the bottom of the first housing connection portion 12. A first reinforcing protrusion 21 corresponding to the first reinforcing cavity 121 is provided on the device body 20. The first reinforcing protrusion 21 can be inserted into the first reinforcing cavity 121. The first reinforcing protrusion 21 and the first reinforcing cavity 121 form a first limiting portion 13a. The first hinge main body portion 11 is provided with second reinforcing protrusions 112 at intervals along the first direction X. The device body 20 is provided with a plurality of third reinforcing protrusions 22 at intervals along the first direction X. The third reinforcing protrusions 22 are inserted into the limiting space formed by the second reinforcing protrusions 112. The second reinforcing protrusions 112 and the third reinforcing protrusions 22 form a second limiting portion 13b. A snap plate 122 is disposed extending downward from the first housing connection portion 12. The snap plate 122 extends along a direction perpendicular to the first direction X. A card slot 23 matching the snap plate 122 is provided on the device body 20. The snap plate 122 is in snap-fit engagement with the card slot 23. The snap plate 122 and the card slot 23 form a third limiting portion 13c. It should be noted that the specific structures of the first limiting portion 13a, the second limiting portion 13b, and the third limiting portion 13c can be combined and set according to actual usage requirements and are not limited herein.

[0072] Refer to Figure 2 、 Figure 4As shown, in one embodiment, the number of the first reinforcing cavities 121 is multiple, and the multiple first reinforcing cavities 121 are arranged in sequence along the first direction X. Such an arrangement can further strengthen the connection strength between the first hinge main body 11 and the device main body 20 and enhance the anti-rearward tilting effect. Exemplarily, the number of the first reinforcing cavities 121 is three, and the three first reinforcing cavities 121 are arranged in sequence along the first direction X. It should be noted that the number, size, and shape of the first reinforcing cavities 121 can all be set according to actual usage requirements and are not limited herein.

[0073] Referring to Figure 2 and Figure 4 As shown, in one disclosed embodiment, an extension plate 123 is provided at the bottom of the first housing connection portion 12. The extension plate 123 extends along the first direction X. A second accommodation space is formed between the extension plate 123 and the first hinge main body 11. A plurality of partition plates 124 are connected between the extension plate 123 and the first hinge main body 11, and each partition plate 124 divides the second accommodation space to form the first reinforcing cavity 121.

[0074] Exemplarily, the top end of the extension plate 123 is connected to the first housing connection portion 12, and a distance is provided between the top end of the extension plate 123 and the first hinge main body 11. A second accommodation space is formed between the outer walls of the extension plate 123 and the first hinge main body 11. The partition plates 124 are arranged at intervals in the second accommodation space, and one end of the partition plate 124 is connected to the first hinge main body 11, and the other end of the partition plate 124 is connected to the extension plate 123, thereby dividing the second accommodation space to form a plurality of first reinforcing cavities 121. For example, in the figure, two partition plates 124 divide the second accommodation space to form three first reinforcing cavities 121. With such an arrangement, the extension plate 123 can be a reinforcing rib to further strengthen the strength of the first housing connection portion, and the partition plate can also be a reinforcing rib connecting the extension plate 123 and the first hinge main body 11. It should be noted that the number of the partition plates 124 can be set according to actual usage requirements.

[0075] It should be noted that the number of the partition plates 124 can be one. The partition plate 124 connects the extension plate 123 and the first hinge main body 11 and divides it into left and right two regions. The first reinforcing cavity 121 represents the left and right two spaces formed by the partition plate 124. That is to say, the first reinforcing cavity 121 can also be understood as a groove-shaped structure penetrating both sides. The specific shape and structure of the first reinforcing cavity 121 are not limited herein, as long as the first reinforcing cavity 121 can achieve the function of accommodating the first reinforcing protrusion 21 and achieving limit.

[0076] Exemplarily, a part of the inner wall of the first reinforcing cavity 121 is formed by the outer wall of the cylindrical first hinge main body portion 11, so that the aperture of the first reinforcing cavity 121 is integrally tapered, which can enhance the reliability of the connection between the first reinforcing cavity 121 and the first reinforcing protrusion 21.

[0077] Referring to Figure 2 and Figure 4 As shown, in an exemplary embodiment, the second reinforcing protrusion 112 is located in the first reinforcing cavity 121. At least two second reinforcing protrusions 112 are arranged in each first reinforcing cavity 121. The second reinforcing protrusions 112 are arranged at intervals in the first reinforcing cavity 121. One end of the third reinforcing protrusion 22 is connected to the first reinforcing protrusion 21, and the third reinforcing protrusion 22 is arc-shaped.

[0078] Exemplarily, the second reinforcing protrusion 112 is located in the first reinforcing cavity 121. The second reinforcing protrusions 112 are arranged at intervals in the first reinforcing cavity 121. One end of the third reinforcing protrusion 22 is connected to the first reinforcing protrusion 21. The third reinforcing protrusion 22 and the second reinforcing protrusion 112 are integrally arc-shaped. Such an arrangement can further enhance the reliability of the limit fixation of the second reinforcing protrusion 112 and the third reinforcing protrusion 22, and between the first reinforcing cavity 121 and the first reinforcing protrusion 21.

[0079] The hinge fixing seat of the present disclosure embodiment is a flat plug-in type. When installing, it is not necessary to lift the device main body, and it can be directly inserted. Moreover, the hinge has better strength, can be limited in the first direction and the second direction, there is no risk of tilting and coming out, and the design requirements for the device main body are simpler, improving the practicability of the hinge fixing seat.

[0080] Referring to Figure 6 and Figure 7 As shown, in an exemplary embodiment, the buckle plate 122 includes a first wing plate 1221 in a straight plate shape. The first wing plate 1221 protrudes outward toward the outside of the card slot, and a first protrusion T1 is provided on the inner wall of the card slot 23 on the side facing the first protrusion T1. The first protrusion T1 is in limit cooperation with the first limit groove 231.

[0081] Referring to Figure 6 and Figure 7As shown, exemplarily, a first protrusion T1 is provided at one end of the first wing plate 1221 away from the first housing connection part 12. That is to say, the first protrusion T1 is provided at the free end of the first wing plate 1221, and the free end of the first wing plate 1221 can move elastically left and right. The dimension of the first wing plate 1221 in the first direction can be slightly smaller than the dimension of the first limiting groove 231 in the first direction. In this way, when the first wing plate 1221 is inserted into the first limiting groove 231, the free end of the first wing plate 1221 can undergo elastic deformation and return to its initial state after entering the first limiting groove 231, so that the first protrusion T1 and the first limiting groove 231 are in limiting cooperation and fixed.

[0082] Referring to Figure 6 and Figure 7 As shown, in an exemplary embodiment, the first protrusion T1 is provided in a prism shape, and the distance between the first protrusion T1 and the first wing plate 1221 gradually increases from the bottom to the top direction of the first wing plate 1221. That is to say, the prism surface of the first protrusion T1 is provided at an acute angle relative to the vertical direction. The opposite surface of the first limiting groove 231 to the prism surface of the first protrusion Y1 is provided as a prism surface, and the sliding surface of the first limiting groove 231 is provided as a prism surface.

[0083] Exemplarily, the opposite surface of the first limiting groove 231 to the prism surface of the first protrusion T1 is provided as a prism surface, that is, the lower wall surface of the first limiting groove 231 is a prism surface. The sliding surface of the first limiting groove 231 is provided as a prism surface, that is, the outer side of the upper wall surface of the first limiting groove 231 is provided as a prism surface. Such a setting further increases the reliability of the limiting cooperation and fixation between the first protrusion T1 and the first limiting groove 231, and at the same time facilitates the first wing plate 1221 to be snapped into the first limiting groove 231.

[0084] Exemplarily, a certain distance is provided between the upper side of the sliding surface of the first limiting groove 231 and the first wing plate 1221. With such a setting, a tool can be used to extend into the gap between the upper side of the sliding surface of the first limiting groove 231 and the first wing plate 1221, which facilitates the disassembly of the hinge fixing seat.

[0085] Figure 8 Schematic diagram of the hinge mechanism and the device main body structure of the present disclosure embodiment; Figure 9 is Figure 8 B-B sectional view schematic diagram of Figure 10 Schematic diagram of the hinge fixing seat structure of another embodiment of the present disclosure. Referring to Figure 8 、 Figure 9 and Figure 10As shown, in an exemplary embodiment, the snap plate 122 includes a U-shaped second wing plate 1222. The second wing plate 1222 includes a first sub-plate 1222a and a second sub-plate 1222b. The first sub-plate 1222a is connected to the first housing connection portion 12. The second sub-plate 1222b protrudes outwardly toward the outside of the card slot and is provided with a second protrusion T2. On the side of the inner wall of the card slot 23 facing the second protrusion T2, a second limiting groove 232 is provided. The second protrusion T2 is in limiting cooperation with the second limiting groove 232.

[0086] Referring to Figure 8 , Figure 9 and Figure 10 As shown, exemplarily, the outer side wall of the second sub-plate 1222b facing away from the first sub-plate 1222a is provided with a second protrusion T2, and the second sub-plate 1222b can move elastically relative to the left and right. Inserting the second wing plate 1222 into the second limiting groove 232 can cause the second sub-plate 1222b to undergo elastic deformation and return to its initial state after entering the second limiting groove 232, so that the second protrusion T2 is in limiting cooperation and fixation with the second limiting groove 232.

[0087] Referring to Figure 8 , Figure 9 and Figure 10 As shown, the second wing plate 1222 of the exemplary embodiment of the present disclosure is set in a U shape. The card slot 23 can be increased relative to the scheme of the first sub-plate 12221, and the second sub-plate 1222b can be pressed relatively toward the first sub-plate 1222a, which is convenient for taking out the hinge fixing seat and is also beneficial to mold production and processing, reducing the processing cost.

[0088] Referring to Figure 8 , Figure 9 and Figure 10 As shown, in an exemplary embodiment, the second protrusion T2 is provided in a prism shape, and the distance between the second protrusion T2 and the second sub-plate 1222b gradually increases from the bottom to the top direction of the second sub-plate 1222b. The opposite surface of the second limiting groove 232 to the prism surface of the second protrusion T2 is set as a prism surface, and the sliding surface of the second limiting groove 232 is set as a prism surface.

[0089] Referring to Figure 8 , Figure 9 and Figure 10 As shown, exemplarily, the opposite surface of the second limiting groove 232 to the prism surface of the second protrusion T2 is set as a prism surface, that is, the lower wall surface of the second limiting groove 232 is a prism surface. The sliding surface of the second limiting groove 232 is set as a prism surface, that is, the outer side of the upper wall surface of the second limiting groove 232 is a prism surface. Such a setting further increases the reliability of the limiting cooperation and fixation between the second protrusion T2 and the second limiting groove 232, and at the same time facilitates the second sub-plate 1222b to be snapped into the second limiting groove 232.

[0090] Referring to Figure 1 、 Figure 3 and Figure 10 As shown, in an exemplary embodiment, a plurality of first reinforcing ribs 125 are provided on a side of the first housing connecting portion 12 facing away from the device main body 20. The plurality of first reinforcing ribs 125 extend along the length direction of the first housing connecting portion 12, and the plurality of first reinforcing ribs 125 are spaced apart.

[0091] Exemplarily, the first hinge main body portion 11 and the first housing connecting portion 12 can be integrally formed by injection molding. A plurality of first reinforcing ribs 125 are provided on a side of the first housing connecting portion 12 facing away from the device main body 20. The plurality of first reinforcing ribs 125 extend along the length direction of the first housing connecting portion 12, and the plurality of first reinforcing ribs 125 are spaced apart. Such a setting can enhance the strength of the first housing connecting portion 12.

[0092] In the related art, the first housing connecting portion 12 is connected to the device main body by screws, and the strength requirement of the first housing connecting portion 12 is relatively low. However, in the exemplary embodiment of the present disclosure, the first housing connecting portion 12 is mounted on the device main body 20 through a limit fixing structure 13, and the strength requirement of the first housing connecting portion 12 is higher. By providing a plurality of first reinforcing ribs on the first housing connecting portion 12 in the exemplary embodiment of the present disclosure, the strength of the first housing connecting portion 12 can be enhanced, so as to meet the strength requirement when the first housing connecting portion 12 is mounted on the device main body 20 through the limit fixing structure 13.

[0093] Referring to Figure 1 、 Figure 3 and Figure 10 As shown, in an exemplary embodiment, a second reinforcing rib 126 is further provided on a side of the first housing connecting portion 12 facing away from the device main body 20. The second reinforcing rib 126 is connected between adjacent first reinforcing ribs 125, and the second reinforcing ribs 126 are cross - arranged. Such a setting can further enhance the strength of the first housing connecting portion 12, so as to meet the strength requirement for the first housing connecting portion 12 of the present disclosure solution to adopt screw - free fixing.

[0094] Exemplarily, the first reinforcing rib 125 extends along the length direction of the first housing connecting portion 12, and the number of the first reinforcing ribs 125 is multiple. The multiple first reinforcing ribs 125 are spaced apart. The second reinforcing rib 126 is provided between adjacent first reinforcing ribs 125, and the second reinforcing ribs 126 are cross - connected in a rhombus shape.

[0095] Figure 11 It is a schematic assembly structure diagram of the hinge mechanism and the device main body in the exemplary embodiment of the present disclosure; Figure 12 It is an exploded structure diagram of the hinge mechanism and the device main body in the exemplary embodiment of the present disclosure. Referring toFigure 11 and Figure 12 As shown in Figure 12 , another embodiment of the present disclosure discloses a hinge mechanism. The hinge mechanism includes a hinge fixed seat 10, a hinge rotating seat 30, a piston 40, an elastic member 50, and a connecting shaft 60 according to any embodiment of the present disclosure. The first housing connecting portion 12 of the hinge fixed seat 10 is connected to the device main body 20. The hinge rotating seat 30 includes a second hinge main body portion 31 and a second housing connecting portion 32. The second hinge main body portion 31 is rotatably connected to the first hinge main body portion 11. The second hinge main body portion 31 is axially penetrated with a second accommodating cavity 311. The second housing connecting portion 32 is used to connect to the door body of the opening and closing device. The first hinge main body portion 11 is provided with a first matching structure. The second hinge main body portion 31 is provided with a second accommodating cavity 311. The piston 40 is disposed in the second accommodating cavity 311. The piston 40 has a second matching structure. The second matching structure abuts against the first matching structure through an opening. The elastic member 50 is disposed in the second accommodating cavity 311 and is located at one end of the piston 40 away from the second matching structure. The elastic member 50 can provide assistance for the abutting state. The connecting shaft 60 penetrates through the first hinge main body portion 11, the piston 40, the elastic member 50, and the second hinge main body portion 31, so that the first hinge main body portion 11 and the second hinge main body portion 31 are axially relatively fixed.

[0096] Exemplarily, the materials of the hinge fixed seat 10 and the hinge rotating seat 20 include polyoxymethylene resin materials. For example, the materials of both the hinge fixed seat 10 and the hinge rotating seat 20 can adopt polyoxymethylene resin materials. The specific materials of the hinge fixed seat 10 and the hinge rotating seat 20 are not limited herein and can be set according to actual usage requirements.

[0097] In the embodiment of the present disclosure, the elastic member 50 can provide assistance for the abutting state. During the process of closing the door body, it can alleviate the problem of the violent collision between the rotatable panel and the fixed structure caused by the rapid descent of the rotatable panel, improving the user experience. Moreover, both the piston 40 and the elastic member 50 are disposed in the second accommodating cavity 311 of the second hinge main body portion 31, and the first hinge main body portion 11, the piston 40, the elastic member 50, and the second hinge main body portion 31 can be assembled and connected through the connecting shaft 60. The hinge is simple and convenient to assemble, reducing the space occupied by the hinge mechanism.

[0098] In an embodiment of the present disclosure, the hinge mechanism further includes a limiting structure. The limiting structure includes a limiting protrusion and a limiting groove. The limiting protrusion is disposed on one side of the first housing connecting portion close to the hinge rotating seat. The limiting groove is disposed on the surface of the second housing connecting portion away from the device main body. When the door body of the opening and closing device is at the maximum opening and closing angle, at least a part of the limiting protrusion is clamped and pressed into the limiting groove. With such a setting, the limiting protrusion generates a force perpendicular to the axis of the hinge rotating seat on the second housing connecting portion of the hinge rotating seat, thereby avoiding damage to the hinge rotating seat due to tensile force and improving the reliability and strength of the hinge mechanism.

[0099] In an exemplary embodiment, a first positioning feature is provided on the top surface of the first mating structure, and a second positioning feature is provided on the top surface of the second mating structure. The first positioning feature and the second positioning feature cooperate to position the initial state of the hinge mechanism. Exemplarily, the first positioning feature may be a circular protrusion, and the second positioning feature may be a circular recess. When the hinge mechanism is in the initial state, the circular protrusion and the circular recess cooperate to position the hinge mechanism in the initial state, preventing the initial state of the hinge mechanism from changing due to transportation or other external forces. Moreover, during installation, the circular protrusion and the circular recess cooperate. When the hinge mechanism is actually assembled to the device body, since the included angle range between the hinge fixing seat 10 and the hinge rotating seat 30 of the hinge during normal use of the door body is greater than or equal to 180°, the circular protrusion and the circular recess hardly play a role, thus not affecting the normal and smooth use of the hinge mechanism.

[0100] Another embodiment of the present disclosure provides an opening and closing device, including a device body 20 and a door body. The device body has an opening, and the device body is snap-connected to the first housing connection part of the hinge mechanism according to any embodiment of the present disclosure through a limit fixing structure. The door body is hinged to the opening of the device body through the hinge rotating seat of the hinge mechanism according to any embodiment of the present disclosure.

[0101] Exemplarily, the opening and closing device of the embodiment of the present disclosure may be a refrigerator, or the opening and closing device may also be other devices that can be opened and closed, such as a dishwasher and a storage cabinet.

[0102] The other components of the above hinge fixing seat, hinge mechanism, and opening and closing device embodiments may adopt various technical solutions known to those of ordinary skill in the art now and in the future, and will not be described in detail here.

[0103] In the description of this specification, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present disclosure.

[0104] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present disclosure, "a plurality of" means two or more unless otherwise specifically defined.

[0105] In the present disclosure, unless otherwise clearly defined and limited, terms such as "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0106] In the present disclosure, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0107] The above disclosure provides many different embodiments or examples for implementing different structures of the present disclosure. To simplify the present disclosure, the components and settings of specific examples are described above. Of course, they are merely examples and are not intended to limit the present disclosure. In addition, the present disclosure may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0108] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily conceive of various changes or substitutions, which should all be covered by the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A hinge fixing base is used for connecting with the device body of an opening and closing device, and is characterized in that, Comprising: A first hinge main body portion, in which a first accommodation cavity is formed along a first direction, and the first direction is the axial direction of the first hinge main body portion; A first housing connection portion, one end of which is connected to the first hinge main body portion, and the extending direction of the first housing connection portion is perpendicular to the first direction; A limiting and fixing structure, through which the first housing connection portion and the device main body are snap-connected.

2. The hinge fixing seat according to claim 1, characterized in that, The first hinge main body portion is cylindrical, a first accommodation space is formed at an interval from the bottom of the first housing connection portion relative to the first hinge main body portion, and the limiting and fixing structure is located in the first accommodation space or the limiting and fixing structure is arranged around the outer peripheral side of the first accommodation space.

3. The hinge fixing base according to claim 1 or 2, characterized in that, The limiting and fixing structure includes a first limiting portion, a second limiting portion and a third limiting portion. The first limiting portion is used for limiting the freedom degree of the first housing connection portion in the horizontal direction and perpendicular to the first direction. The second limiting portion is used for limiting the freedom degree of the first housing connection portion in the horizontal direction and along the first direction. The third limiting portion is used for limiting the freedom degree of the first housing connection portion in the vertical direction.

4. The hinge fixing base according to claim 3, wherein, A first strengthening cavity is arranged at the bottom of the first housing connection portion, and a first strengthening protrusion corresponding to the first strengthening cavity is arranged on the device main body. The first strengthening protrusion can be inserted into the first strengthening cavity, and the first strengthening cavity forms the first limiting portion; And / or The first hinge main body portion is provided with second strengthening protrusions at intervals along the first direction, and the device main body is provided with a plurality of third strengthening protrusions at intervals along the first direction. The second strengthening protrusions are inserted into the limiting space formed by the third strengthening protrusions, and the second strengthening protrusions form the second limiting portion; and / or A buckle plate extends vertically downward from the first housing connection portion, and the buckle plate extends along a direction perpendicular to the first direction. A card slot matching with the buckle plate is arranged on the device main body. The buckle plate is in snap-fit connection with the card slot, and the buckle plate forms the third limiting portion.

5. The hinge fixing seat according to claim 4, wherein, The number of the first strengthening cavities is multiple, and the multiple first strengthening cavities are arranged in sequence along the first direction.

6. The hinge fixing base according to claim 5, characterized in that An extension plate is arranged at the bottom of the first housing connection portion, and the extension plate extends along the first direction. A second accommodation space is formed between the extension plate and the first hinge main body portion. At least one partition plate is connected between the extension plate and the first hinge main body portion, and the partition plate divides the second accommodation space to form the first strengthening cavity.

7. The hinge fixing seat according to claim 4, characterized in that The second strengthening protrusions are located in the first strengthening cavities, at least two second strengthening protrusions are arranged in each first strengthening cavity, the second strengthening protrusions are arranged at intervals in the first strengthening cavity, one end of the third strengthening protrusion is connected to the first strengthening protrusion, and the third strengthening protrusion is arc-shaped.

8. The hinge fixing seat according to claim 4, wherein, The snap plate includes a first wing plate in a straight plate shape, the first wing plate is provided with a first protrusion protruding toward the outer side of the card slot, the inner wall of the card slot is provided with a first limiting groove on one side facing the first protrusion, and the first protrusion is limitedly matched with the first limiting groove; or The snap plate includes a U-shaped second wing plate, the second wing plate includes a first sub-plate and a second sub-plate, the first sub-plate is connected to the first shell connecting portion, the second sub-plate is provided with a second protrusion protruding toward the outer side of the card slot, the inner wall of the card slot is provided with a second limiting groove on one side facing the second protrusion, and the second protrusion is limitedly matched with the second limiting groove.

9. The hinge fixing base according to claim 8, wherein, The first protrusion is arranged in a prismatic shape, and the distance between the first protrusion and the first wing plate gradually increases from the bottom to the top of the first wing plate, the first limiting groove and the prismatic surface of the first protrusion are arranged opposite to each other as prismatic surfaces, the first limiting groove sliding surface is arranged as a prismatic surface, and the upper side of the sliding surface of the first limiting groove is arranged at a certain distance from the first wing plate; or The second protrusion is arranged in a prismatic shape, and the distance between the second protrusion and the second sub-plate gradually increases from the bottom to the top of the second sub-plate, the surface opposite to the prismatic surface of the second limiting groove and the second protrusion is arranged as a prismatic surface, and the sliding surface of the second limiting groove is arranged as a prismatic surface.

10. The hinge fixing base according to claim 1, characterized in that, A plurality of first reinforcing ribs are arranged on a side of the first shell connecting portion away from the device main body. The plurality of first reinforcing ribs are extended along a length direction of the first shell connecting portion and are arranged at intervals.

11. The hinge fixing seat according to claim 10, characterized in that, A second reinforcing rib is further provided on a side of the first shell connecting portion away from the device main body, wherein the second reinforcing rib is connected between adjacent first reinforcing ribs, and the second reinforcing ribs are arranged crosswise with each other.

12. A hinge mechanism, characterized in that, include: The hinge fixing seat according to any one of claims 1 to 11, wherein the first shell connecting portion of the hinge fixing seat is connected to the device body; A hinge rotating seat, the hinge rotating seat comprising a second hinge main body and a second shell connecting portion, the second hinge main body is rotatably connected to the first hinge main body, the second hinge main body is axially penetrated to form a second accommodating cavity, and the second shell connecting portion is used to connect to the door body of the opening and closing device; A piston, wherein the first hinge body is provided with a first matching structure, the second hinge body is provided with an 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 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 is provided through the first hinge body, the piston, the elastic member and the second hinge body, so that the first hinge body and the second hinge body are relatively fixed along the axial direction.

13. The hinge mechanism according to claim 12, characterized in that, The hinge mechanism further includes a limiting structure, which includes a limiting protrusion and a limiting groove. The limiting protrusion is provided on one side of the first housing connection portion close to the hinge rotating seat, and the limiting groove is provided on the surface of the second housing connection portion facing away from the device body. When the door body of the opening and closing device is at the maximum opening and closing angle, at least a part of the limiting protrusion is clamped and pressed in the limiting groove.

14. The hinge mechanism according to claim 12, characterized in that, A first positioning is provided on the top surface of the first fitting structure, and a second positioning is provided on the top surface of the second fitting structure. The first positioning and the second positioning cooperate to position the initial state of the hinge mechanism.

15. An opening and closing device, characterized in that, Comprising: A device body having an opening, and the first housing connection portion of the hinge mechanism according to any one of claims 12 to 14 is snap-connected to the device body through the limiting and fixing structure; A door body, which is hinged to the opening of the device body through the hinge rotating seat of the hinge mechanism according to any one of claims 12 to 14.

Images