Hinge assembly
By using soft rubber sleeves and convex rib limiting structures in the hinge assembly, the noise and oil leakage problems of the hinge assembly are solved, achieving smooth and quiet door opening and closing, and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG OPK SMART HOME TECH CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-07-10
AI Technical Summary
Existing hinge components are prone to noise and oil leakage during rotation, and may experience jamming after long-term use, affecting user experience and increasing maintenance costs.
A soft rubber sleeve is inserted into the second shaft hole, and the second shaft section is rotatably connected to the third shaft hole on the soft rubber sleeve. Stability and uniform friction are ensured by ribs and limiting structures, avoiding the need for oiling.
It achieves smooth, noiseless, and leak-free rotation, improving reliability and lifespan, reducing maintenance costs, and providing a quiet and comfortable operating environment.
Smart Images
Figure CN224478807U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of door and window hardware accessories, specifically relating to hinge components. Background Technology
[0002] In related technologies, hinge assemblies are common components widely used to connect doors to door frames, enabling the door to rotate. A typical hinge assembly usually consists of a first hinge, a second hinge, and a pivot. One of the first and second hinges connects to the door body, while the other connects to the door frame above the doorway. Specifically, the first hinge has a first pivot hole, and the second hinge has a second pivot hole. The pivot includes a first pivot segment and a second pivot segment. The first pivot segment is inserted into the first pivot hole, and the second pivot segment is rotatably connected to the second pivot hole. The relative rotation between the second pivot segment and the second pivot hole guides the door to rotate relative to the door frame.
[0003] To reduce costs, hinges are typically made of profiles. However, hinges made of this material tend to generate noise during the relative rotation of the second shaft section and the second shaft hole, affecting the user experience. To address this noise issue, some technologies use oil between the second shaft section and the second shaft hole. However, this oiling process introduces new problems, namely, oil leakage. This not only pollutes the surrounding environment but may also damage the surface of the door and frame, increasing subsequent cleaning and maintenance costs. Furthermore, over long-term use, changes in oil viscosity and the introduction of impurities can cause uneven rotation between the second shaft section and the second shaft hole, leading to jamming and further affecting the normal use of the door. Utility Model Content
[0004] In order to overcome at least one of the defects described in the prior art, the present invention provides a hinge assembly designed to avoid problems such as oil leakage and rotation jamming.
[0005] The technical solution adopted by this utility model to solve its problem is:
[0006] A hinge assembly includes: a first hinge having a first shaft hole; a second hinge having a second shaft hole; a shaft body including a first shaft segment and a second shaft segment fixedly connected, the first shaft segment being inserted into the first shaft hole; a soft rubber sleeve being inserted into the second shaft hole, the soft rubber sleeve having a third shaft hole, the second shaft segment and the third shaft hole being rotatably connected.
[0007] As an optional implementation, the peripheral sidewall of the first shaft segment is provided with a plurality of ribs, and the plurality of ribs are connected to the inner sidewall of the first shaft hole.
[0008] As an optional implementation, the plurality of the protruding ribs extend axially along the first shaft segment, and the inner sidewall of the first shaft hole is provided with a first groove extending axially, with some of the protruding ribs being engaged in the first groove and some of the protruding ribs abutting against the inner sidewall of the first shaft hole.
[0009] As an optional implementation, the peripheral sidewall of the soft rubber sleeve is provided with a slit, and the inner sidewall of the second shaft hole is provided with a limiting part, which is engaged with the slit to restrict the relative rotation between the soft rubber sleeve and the second shaft hole.
[0010] As an optional implementation, the slit extends axially along the soft rubber sleeve, and the inner sidewall of the second shaft hole is provided with a second groove extending axially, and the limiting part is the edge sidewall of the groove opening of the second groove.
[0011] As an optional implementation, the second hinge has a second sidewall opposite to the first hinge, and the peripheral sidewall of the soft rubber sleeve is provided with a limiting flange, which is located outside the second shaft hole and abuts against the second sidewall; the hinge assembly also includes a gasket, which is sleeved on the second shaft segment, and the gasket has a smooth surface facing the limiting flange, and the smooth surface and the limiting flange form a surface contact.
[0012] As an optional implementation, the first hinge has a first sidewall opposite to the second hinge, and the gasket is located outside the first shaft hole and abuts against the first sidewall.
[0013] As an optional implementation, the first hinge includes a first bearing seat and a first side plate that are fixedly connected to each other. The first bearing hole is disposed in the first bearing seat, and the first side plate is provided with a first screw hole for connecting the door body or the door frame.
[0014] As an optional implementation, the first side plate is provided with a first limiting rib extending axially along the first shaft hole, and the included angle between the first limiting rib and the first side plate is 90 degrees.
[0015] As an optional implementation, the structure of the first hinge is the same as that of the second hinge.
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0017] The hinge assembly of this invention has two main advantages. First, the flexibility and elasticity of the soft rubber sleeve allow it to adapt to the rotation of the second shaft segment, providing a uniform and suitable frictional force. This uniform friction ensures that the relative rotation between the second shaft segment and the third shaft hole does not wobble due to insufficient friction, while also preventing rotational jamming caused by excessive friction or uneven local friction. Even during long-term use, changes in oil viscosity or the introduction of impurities will not affect the smoothness of the relative rotation between the second shaft segment and the third shaft hole, ensuring that the door can always open and close smoothly and steadily, thus improving the reliability and lifespan of the hinge assembly. Second, the flexibility and elasticity of the soft rubber sleeve effectively absorb and reduce vibrations and impacts generated during rotation, thereby significantly reducing the noise generated when the hinge assembly rotates, providing users with a quieter and more comfortable operating environment. Thirdly, the hinge components can achieve silent operation without the need for oiling, thus fundamentally eliminating oil leakage and avoiding pollution and damage to the surrounding environment, door body, and door frame surface caused by oil leakage. This reduces subsequent cleaning and maintenance work and lowers usage costs. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a three-dimensional structural diagram of the hinge component according to an embodiment of this application;
[0020] Figure 2 This is an exploded view of the hinge assembly according to an embodiment of this application from a first perspective;
[0021] Figure 3 This is an exploded view of the hinge assembly according to an embodiment of this application from a second perspective;
[0022] Figure 4 This is a three-dimensional structural diagram of the first hinge according to an embodiment of this application;
[0023] Figure 5 This is a three-dimensional structural diagram of the second hinge according to an embodiment of this application;
[0024] Figure 6 This is a three-dimensional structural diagram of the shaft body according to an embodiment of this application;
[0025] Figure 7 This is a three-dimensional structural diagram of the soft rubber sleeve according to an embodiment of this application.
[0026] Explanation of key figure labels:
[0027] 1. First hinge; 11. First shaft hole; 111. First slot; 12. First shaft seat; 13. First side plate; 14. First limiting rib; 15. First screw hole; 2. Second hinge; 21. Second shaft hole; 211. Second slot; 212. Limiting part; 22. Second shaft seat; 23. Second side plate; 24. Second limiting rib; 25. Second screw hole; 3. Shaft body; 31. First shaft section; 311. Raised rib; 32. Second shaft section; 4. Soft rubber sleeve; 41. Third shaft hole; 42. Limiting flange; 43. Crack; 44. Limiting protrusion; 5. Gasket; 51. Smooth surface. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.
[0030] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.
[0031] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.
[0032] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.
[0033] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.
[0034] Please see Figures 1 to 7 This application provides a hinge assembly, which includes a first hinge 1, a second hinge 2, a shaft 3, and a soft rubber sleeve 4. The first hinge 1 is provided with a first shaft hole 11; the second hinge 2 is provided with a second shaft hole 21; the shaft 3 includes a first shaft segment 31 and a second shaft segment 32 fixedly connected, the first shaft segment 31 being inserted into the first shaft hole 11; the soft rubber sleeve 4 is inserted into the second shaft hole 21, and a third shaft hole 41 is provided on the soft rubber sleeve 4, the second shaft segment 32 and the third shaft hole 41 being rotatably connected.
[0035] The hinge assembly provided in this application embodiment has two main aspects. First, the flexibility and elasticity of the soft rubber sleeve 4 allow it to adapt to the rotation of the second shaft segment 32, providing a uniform and suitable friction force. This uniform friction force ensures that the relative rotation between the second shaft segment 32 and the third shaft hole 41 will not wobble due to insufficient friction, while also preventing rotational jamming caused by excessive friction or uneven local friction. Even during long-term use, the smoothness of the relative rotation between the second shaft segment 32 and the third shaft hole 41 will not be affected by changes in oil viscosity or the introduction of impurities, ensuring that the door can always open and close smoothly and steadily, thus improving the reliability and lifespan of the hinge assembly. Second, the flexibility and elasticity of the soft rubber sleeve 4 can effectively absorb and reduce the vibration and impact generated during rotation, thereby greatly reducing the noise generated when the hinge assembly rotates, providing users with a quieter and more comfortable operating environment. Thirdly, the hinge components can achieve silent operation without the need for oiling, thus fundamentally eliminating oil leakage and avoiding pollution and damage to the surrounding environment, door body, and door frame surface caused by oil leakage. This reduces subsequent cleaning and maintenance work and lowers usage costs.
[0036] like Figure 2 , Figure 4 and Figure 5As shown, in one embodiment, the peripheral sidewall of the first shaft segment 31 is provided with multiple protruding ribs 311, which are connected to the inner sidewall of the first shaft hole 11. With this configuration, when the door is subjected to external torsion, the frictional force and mechanical engagement force between the protruding ribs 311 and the inner sidewall of the first shaft hole 11 work together to resist the torsional torque and prevent the shaft 3 from twisting relative to the first shaft hole 11. This greatly improves the torsional resistance of the hinge assembly, ensuring the normal rotation of the door in various complex usage scenarios. Furthermore, during frequent opening and closing of the door, this structure effectively restricts the axial movement of the shaft 3, preventing loosening, abnormal noise, or even damage to the hinge assembly caused by the movement of the shaft 3, and ensuring the stability of the connection between the door and the door frame.
[0037] like Figure 2 , Figure 4 and Figure 5 As shown, in one embodiment, multiple ribs 311 extend axially along the first shaft segment 31. A first groove 111 extending axially is provided on the inner wall of the first shaft hole 11. Some ribs 311 are engaged within the first groove 111, while others abut against the inner wall of the first shaft hole 11. Thus, the engagement of some ribs 311 with the first groove 111 on the inner wall of the first shaft hole 11 ensures precise positioning of the first shaft segment 31 within the first shaft hole 11, effectively preventing unnecessary displacement of the shaft 3 in the axial and radial directions. This significantly enhances the overall stability of the hinge assembly. Furthermore, the abutment of some ribs 311 against the inner wall of the first shaft hole 11 provides a double-connection design, making the connection between the first shaft segment 31 and the first shaft hole 11 more robust and reliable. Even under significant external impact or wear from long-term use, a tight fit between the two is maintained, reducing the probability of malfunctions due to loose connections.
[0038] like Figure 2 , Figure 4 and Figure 5 As shown, in one embodiment, four first slots 111 are provided, and the four first slots 111 are evenly distributed in the first shaft hole 11. In this way, the connection between the shaft 3 and the first shaft hole 11 is tighter and more reliable, reducing the gap caused by loose connection, avoiding problems such as shaking or abnormal noise during the opening and closing of the door, and providing users with a more stable and quiet operating environment.
[0039] It should be noted that in some other embodiments, the number of first card slots 111 may be, but is not limited to, 1, 2 or 5, etc., which can be selected according to actual needs, and no single limitation is made here.
[0040] like Figure 2 , Figure 5 and Figure 7As shown, in one embodiment, the peripheral sidewall of the soft rubber sleeve 4 has a slit 43, and the inner sidewall of the second shaft hole 21 has a limiting part 212. The limiting part 212 is engaged with the slit 43 to restrict the relative rotation between the soft rubber sleeve 4 and the second shaft hole 21. In this way, the flexibility and deformability of the soft rubber sleeve 4 are fully utilized. During installation, the soft rubber sleeve 4 can undergo a certain degree of elastic deformation through the slit 43, allowing the limiting part 212 to be smoothly engaged. After installation, the soft rubber sleeve 4 restores its deformation and engages the limiting part 212, ensuring the reliability of the connection and preventing unnecessary rotation of the soft rubber sleeve 4 within the second shaft hole 21, thereby ensuring the stability and reliability of the hinge assembly. Compared with traditional threaded connections, adhesive bonding, and other methods, this engaging structure does not require additional tools or complex operating steps, and can complete the assembly solely based on its own structural features.
[0041] like Figure 2 , Figure 5 and Figure 7 As shown, in one embodiment, the slit 43 extends axially along the soft rubber sleeve 4, and the inner sidewall of the second shaft hole 21 is provided with a second groove 211 extending axially. The limiting part 212 is the edge sidewall of the groove opening of the second groove 211. Thus, in the first aspect, the axially extending slit 43 and the second groove 211 have a significant guiding effect during assembly. When installing the soft rubber sleeve 4 into the second shaft hole 21, the operator only needs to align the slit 43 of the soft rubber sleeve 4 with the second groove 211 and then gently push it in axially. The soft rubber sleeve 4 can then smoothly enter the second shaft hole 21, and the limiting part 212 can naturally engage with the slit 43, completing accurate positioning and connection. This good assembly guidance greatly improves assembly efficiency, reduces errors and rework during assembly, lowers the skill requirements for operators, and is conducive to achieving large-scale automated production. Secondly, by designing the limiting part 212 as the edge sidewall of the opening of the second slot 211, there is no need to set an additional protruding limiting structure on the inner sidewall of the second shaft hole 21, which simplifies the structural design and makes the structure of the entire hinge assembly more concise and regular, reducing design complexity and manufacturing costs. Furthermore, the slit 43 extends axially along the soft rubber sleeve 4, and the second slot 211 extends axially along the second shaft hole 21 itself. The two match each other in the axial direction. This design makes full use of the axial space, making the connection structure between the soft rubber sleeve 4 and the second shaft hole 21 more compact, without occupying too much radial space, which is conducive to the overall miniaturization and thinning design of the hinge assembly.
[0042] like Figure 2 , Figure 5 and Figure 7As shown, in one embodiment, multiple slits 43 are provided, and multiple second slots 211 are correspondingly provided. Thus, the multiple slits 43 and corresponding second slots 211 are evenly distributed on the periphery of the soft rubber sleeve 4 and the inner wall of the second shaft hole 21, resulting in good symmetry of the entire connection structure in the circumferential direction. This symmetrical design ensures uniform force distribution between the soft rubber sleeve 4 and the second shaft hole 21, avoiding structural deformation or damage caused by excessive local force, and improving the overall stability and reliability of the hinge assembly. Furthermore, without increasing the overall size of the hinge assembly, by reasonably setting multiple slits 43 and second slots 211, the circumferential space of the soft rubber sleeve 4 and the second shaft hole 21 is fully utilized, enabling a more reliable connection within a limited space.
[0043] like Figure 1 , Figure 2 , Figure 3 and Figure 7 As shown, in one embodiment, the second hinge 2 has a second sidewall opposite to the first hinge 1. The peripheral sidewall of the soft rubber sleeve 4 is provided with a limiting flange 42, which is located outside the second shaft hole 21 and abuts against the second sidewall. The hinge assembly also includes a gasket 5, which is sleeved on the second shaft segment 32. The gasket 5 has a smooth surface 51 facing the limiting flange 42, and the smooth surface 51 and the limiting flange 42 form surface contact. This avoids direct friction between the soft rubber sleeve 4 and the first hinge 1. The surface contact between the smooth surface 51 of the gasket 5 and the limiting flange 42 reduces the coefficient of friction between components and lowers the wear rate. During frequent opening and closing of the door, friction between components is one of the main causes of wear. The design of the smooth surface 51 effectively reduces this friction, improving the wear resistance and durability of the hinge assembly. Furthermore, this low-friction design can effectively reduce the harsh noise generated by friction, providing a quieter user environment.
[0044] like Figure 1 , Figure 2 , Figure 3 and Figure 7 As shown, in one embodiment, the outer wall of the soft rubber sleeve 4 is further provided with a limiting protrusion 44, which is engaged in the second slot 211. This arrangement...
[0045] like Figure 1 , Figure 2 and Figure 3As shown, in one embodiment, the first hinge 1 has a first sidewall opposite to the second hinge 2, and the gasket 5 is located outside the first shaft hole 11 and abuts against the first sidewall. Thus, by placing the gasket 5 outside the first shaft hole 11 and abutting against the first sidewall, the space around the first shaft hole 11 is fully utilized without increasing the radial dimension of the hinge assembly. This ingenious space utilization allows the hinge assembly to achieve effective limiting and support functions within a compact space, improving space utilization. Furthermore, the gasket 5, abutting against the first sidewall, can withstand a certain axial force. When the door is subjected to external forces, such as wind pressure or collisions, an axial component force is generated. The gasket 5 can share this axial force, reducing the burden on other components (such as the soft rubber sleeve 4, the second shaft section 32, etc.), thereby enhancing the axial load-bearing capacity of the hinge assembly.
[0046] like Figure 2 and Figure 4 As shown, in one embodiment, the first hinge 1 includes a first bearing 12 and a first side plate 13 fixedly connected to each other. A first shaft hole 11 is provided in the first bearing 12, and a first screw hole 15 is provided in the first side plate 13 for connecting the door body or door frame. Thus, the first hinge 1 is designed with a structure in which the first bearing 12 and the first side plate 13 are fixedly connected. The first bearing 12 mainly undertakes the rotation function of the hinge, and the first shaft hole 11 provided in the first bearing 12 provides rotational support for the second shaft segment 32, allowing the door body to open and close flexibly around the shaft. The first side plate 13 mainly undertakes the connection function, and by providing the first screw hole 15, it can be easily fixedly connected to the door body or door frame.
[0047] like Figure 2 and Figure 4 As shown, in one embodiment, a first limiting rib 14 extending axially along the first shaft hole 11 is provided on the first side plate 13, and the included angle between the first limiting rib 14 and the first side plate 13 is 90 degrees, which facilitates the connection of the door body or door frame. Thus, the first limiting rib 14 provides a clear installation positioning reference for connecting the door body or door frame. During installation, installers can align the first limiting rib 14 with the corresponding structure on the door body or door frame, thereby quickly and accurately determining the hinge installation position. This greatly simplifies the installation process, reduces installation time and difficulty, and especially for non-professional installers, it makes hinge installation easier, improving installation efficiency and accuracy.
[0048] like Figure 2 and Figure 5As shown, in one embodiment, the second hinge 2 includes a second bearing seat 22 and a second side plate 23 fixedly connected to each other. A second shaft hole 21 is provided in the second bearing seat 22, and a second screw hole 25 is provided in the second side plate 23 for connecting the door body or door frame. Thus, the second hinge 2 is designed with a structure in which the second bearing seat 22 and the second side plate 23 are fixedly connected. The second bearing seat 22 mainly undertakes the rotation function of the hinge, the second shaft hole 21 provided in the second bearing seat 22 provides rotational support for the second shaft segment 32, allowing the door body to open and close flexibly around the shaft, and the second side plate 23 mainly undertakes the connection function, and by providing the second screw hole 25, it can be easily fixedly connected to the door body or door frame.
[0049] like Figure 2 and Figure 5 As shown, in one embodiment, a second limiting rib 24 protrudes from the second side plate 23, extending axially along the second shaft hole 21, and the included angle between the second limiting rib 24 and the second side plate 23 is 90 degrees. Thus, the second limiting rib 24 provides a clear installation positioning reference for connecting the door body or door frame. During installation, installers can align the second limiting rib 24 with the corresponding structure on the door body or door frame, thereby quickly and accurately determining the hinge installation position. This greatly simplifies the installation process, reduces installation time and difficulty, and especially for non-professional installers, it makes hinge installation easier, improving installation efficiency and accuracy.
[0050] like Figure 2 , Figure 4 and Figure 5 As shown, in one embodiment, the structure of the first hinge 1 and the structure of the second hinge 2 are identical. Thus, the installation positions of the first hinge 1 and the second hinge 2 can be interchanged. During installation, the installer does not need to distinguish between the different structures of the first hinge 1 and the second hinge 2; they only need to follow the same installation method and steps. This reduces errors and confusion during installation and improves installation efficiency and accuracy.
[0051] like Figure 2 and Figure 6 As shown, in one embodiment, the diameter of the second shaft segment 32 is smaller than the diameter of the first shaft segment 31. Thus, the first shaft segment 31 has a larger diameter, which is used to connect with the first shaft hole 11 to provide stable support and fixation; the second shaft segment 32 has a smaller diameter, which is used to connect with the third shaft hole 41 to provide relatively flexible rotation.
[0052] In some implementations, the soft sleeve 4 may be made of rubber or silicone, depending on the actual needs, and is not limited to any one of them.
[0053] In summary, the hinge assembly disclosed in this utility model can bring at least the following beneficial technical effects:
[0054] (1) The flexibility and elasticity of the soft rubber sleeve 4 enable it to adapt to the rotation of the second shaft section 32, providing a uniform and appropriate friction force for the second shaft section 32. This uniform friction force can ensure that the relative rotation between the second shaft section 32 and the third shaft hole 41 will not wobble due to insufficient friction force, and can also avoid the rotation jamming phenomenon caused by excessive friction force or uneven local friction force.
[0055] (2) The flexibility and elasticity of the soft rubber sleeve 4 can effectively absorb and reduce the vibration and impact generated during rotation, thereby greatly reducing the noise generated when the hinge assembly rotates, providing users with a quieter and more comfortable user environment;
[0056] (3) The hinge assembly can achieve the silent function without oiling, thus fundamentally eliminating the occurrence of oil leakage, avoiding pollution and damage to the surrounding environment, door body and door frame surface caused by oil leakage, reducing subsequent cleaning and maintenance work, and reducing the cost of use;
[0057] (4) The protruding ribs 311 cooperate with the first slot 111 opened on the inner side wall of the first shaft hole 11, which can ensure that the first shaft segment 31 is accurately fixed in the first shaft hole 11, effectively preventing unnecessary displacement of the shaft 3 in the axial and radial directions, and greatly enhancing the stability of the overall structure of the hinge assembly.
[0058] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.
Claims
1. A hinge assembly, characterized in that, include: The first hinge (1) is provided with a first shaft hole (11); The second hinge (2) is provided with a second shaft hole (21); The shaft (3) includes a first shaft segment (31) and a second shaft segment (32) that are fixedly connected, wherein the first shaft segment (31) is inserted into the first shaft hole (11); A soft rubber sleeve (4) is inserted into the second shaft hole (21). A third shaft hole (41) is provided on the soft rubber sleeve (4). The second shaft segment (32) and the third shaft hole (41) are rotatably connected.
2. The hinge assembly according to claim 1, characterized in that, The peripheral sidewall of the first shaft segment (31) is provided with a plurality of ribs (311), and the plurality of ribs (311) are connected to the inner sidewall of the first shaft hole (11).
3. The hinge assembly according to claim 2, characterized in that, The plurality of the protruding ribs (311) extend axially along the first shaft segment (31), and the inner sidewall of the first shaft hole (11) is provided with a first groove (111) extending axially. Some of the protruding ribs (311) are engaged in the first groove (111), and some of the protruding ribs (311) abut against the inner sidewall of the first shaft hole (11).
4. The hinge assembly according to claim 1, characterized in that, The soft rubber sleeve (4) has a slit (43) on its peripheral sidewall, and a limiting part (212) is provided on the inner sidewall of the second shaft hole (21). The limiting part (212) is engaged with the slit (43) to restrict the relative rotation between the soft rubber sleeve (4) and the second shaft hole (21).
5. The hinge assembly according to claim 4, characterized in that, The slit (43) extends along the axial direction of the soft rubber sleeve (4), and the inner sidewall of the second shaft hole (21) is provided with a second slot (211) extending along its own axial direction. The limiting part (212) is the edge sidewall of the slot opening of the second slot (211).
6. The hinge assembly according to claim 5, characterized in that, The outer side wall of the soft rubber sleeve (4) is also provided with a limiting protrusion (44), which is engaged in the second slot (211).
7. The hinge assembly according to claim 1, characterized in that, The second hinge (2) has a second sidewall opposite to the first hinge (1), and the peripheral sidewall of the soft rubber sleeve (4) is provided with a limiting flange (42), which is located outside the second shaft hole (21) and abuts against the second sidewall; the hinge assembly also includes a gasket (5), which is sleeved on the second shaft segment (32), and the gasket (5) has a smooth surface (51) facing the limiting flange (42), and the smooth surface (51) and the limiting flange (42) form a surface contact.
8. The hinge assembly according to claim 1, characterized in that, The first hinge (1) includes a first bearing seat (12) and a first side plate (13) fixedly connected to each other. The first shaft hole (11) is provided in the first bearing seat (12), and the first side plate (13) is provided with a first screw hole (15). The first screw hole (15) is used to connect the door body or the door frame.
9. The hinge assembly according to claim 8, characterized in that, The first side plate (13) is provided with a first limiting rib (14) extending axially along the first shaft hole (11), and the included angle between the first limiting rib (14) and the first side plate (13) is 90 degrees.
10. The hinge assembly according to any one of claims 1-9, characterized in that, The structure of the first hinge (1) is the same as that of the second hinge (2).