Hinge

Abstract

The hinge comprises a mandrel, a first hinge piece and a second hinge piece, the mandrel is sleeved with the first hinge piece and the second hinge piece, the first hinge piece comprises a first shaft sleeve, the first shaft sleeve comprises a first installation cavity, two first protection sleeves in interference fit with the first installation cavity are arranged in the first installation cavity, and the second hinge piece comprises a second shaft sleeve. Gaps are formed between the two sides of the first shaft sleeve and the second shaft sleeve, rotating bearings arranged outside the central spindle in a sleeving mode are arranged in the gaps in the two sides of the first shaft sleeve respectively, each rotating bearing comprises a shell, a rotating piece and a fixing piece, each fixing piece comprises a mounting base and a mounting convex part, and each rotating piece is arranged outside the corresponding mounting convex part in a sleeving mode; an annular clamping groove is formed in the end, corresponding to the rotating piece, of the mounting base, an annular clamping part is arranged on one face of the rotating piece, the thickness of the rotating piece and the fixing piece in the inserted state is larger than the depth of an inner cavity of the shell, and the shell abuts against the second shaft sleeve. By the adoption of the technical scheme, abrasion is reduced, rotation stability is high, the mute effect is good, the damping effect is good, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of hardware fittings, in particular to a hinge. Background Art

[0002] A hinge is generally used to connect two objects and allow the two objects to rotate relative to each other. The existing hinge generally consists of a core shaft (also called a rotating shaft), and two hinge pieces with protective sleeves sleeved on the core shaft, and damping oil is added between the core shaft and the protective sleeve.

[0003] However, for an existing hinge, which includes a core shaft, a first hinge piece, a second hinge piece, a first shaft sleeve connected to the first hinge piece and sleeved on the core shaft, a second shaft sleeve connected to the second hinge piece and sleeved on the core shaft with a gap from the first shaft sleeve, and a bearing made of a self-lubricating material arranged in the gap. The bearing includes a first connecting piece, a second connecting piece and a connecting sleeve. The first connecting piece includes a connecting seat and a connecting ring. The connecting ring is sleeved between the first shaft sleeve and the core shaft. The connecting seat is provided with a clamping groove. The second connecting piece is inserted into the clamping groove and can rotate relative to the first connecting piece. One end of the connecting sleeve is sleeved between the second connecting piece and the core shaft, and the other end is sleeved between the second shaft sleeve and the core shaft. The bearing in the hinge provided by the utility model can effectively improve the smoothness of the rotation between the first hinge piece and the second hinge piece, and has a better lubricating effect while ensuring the service life of the hinge. However, this hinge only relies on the sliding friction between the lubricating bearing itself and the surfaces of the shaft sleeves of the first hinge piece and the second hinge piece to improve the smoothness of the rotation between the first hinge piece and the second hinge piece. And the first connecting piece includes a connecting seat and a connecting ring. The connecting ring is sleeved between the first shaft sleeve and the core shaft. Since the core shaft rotates, it often drives the connecting ring to rotate. Therefore, during the rotation of the hinge, the connecting seat generates friction with the second connecting piece and the outer side of the first shaft sleeve respectively, and at the same time, the connecting ring generates friction with the inner wall of the first shaft sleeve. After long-term use and wear, the wear rate of the first connecting piece is high and the service life is short, which easily causes the lubricating bearing to deform or get stuck due to wear, or the doors and windows to be quickly opened and closed due to the disappearance of the damping effect, affecting the user experience. Summary of the Utility Model

[0004] Based on the above problems, the purpose of the utility model is to provide a hinge.

[0005] In view of the above problems, the following technical solutions are provided: A hinge, including a core shaft, a first hinge piece and a second hinge piece sleeved on the core shaft. The first hinge piece includes a first bushing for installing the core shaft. The first bushing includes a first installation cavity. Two first protective sleeves in interference fit with the first installation cavity are arranged in the first installation cavity. The second hinge piece includes a second bushing for installing the core shaft. There is a clearance between both sides of the first bushing and the second bushing. Rotating bearings sleeved outside the core shaft are respectively arranged in the clearances on both sides of the first bushing. The rotating bearing includes a housing, a rotating member and a fixing member. The fixing member includes an installation base and an installation convex portion. The rotating member is sleeved outside the installation convex portion. The installation base is provided with an annular groove corresponding to one end of the rotating member. One side of the rotating member corresponding to the installation base is provided with an annular engaging portion adapted to the annular groove. The thickness of the rotating member and the fixing member in the inserted state is greater than the depth of the inner cavity of the housing. The housing abuts against the second bushing. The rotating member and the fixing member rotate relatively as the first hinge piece or the second hinge piece rotates.

[0006] By adopting the above technical solution, compared with the existing hinge that only improves the smoothness of rotation between the first hinge piece and the second hinge piece through bearings, in the present utility model, the rotating member and the first protective sleeve are separately arranged, and the two do not interact with each other, reducing the wear on the rotating member, and at the same time, the assembly is more simple and fast; the thickness of the rotating member and the fixing member in the inserted state is greater than the depth of the inner cavity of the housing, that is, the rotating member protrudes outside the housing and abuts against the first bushing, avoiding the friction between the housing and the first bushing; at the same time, the rotating member is sleeved outside the installation convex portion, and the rotating member does not rub against the core shaft, prolonging the service life.

[0007] The present utility model is further provided that: A storage oil cavity is formed by the clearance between the annular engaging portion and the annular groove. The inner diameter of the rotating member is greater than the outer diameter of the installation convex portion, and the outer diameter of the rotating member is less than the outer diameter of the installation base.

[0008] By adopting the above technical solution, the lubricating oil is arranged in the storage oil cavity, making the friction between the annular engaging portion and the annular groove smaller; the inner diameter of the rotating member is greater than the outer diameter of the installation convex portion, and the two are arranged with a clearance, reducing the friction between the rotating member and the fixing member; the outer diameter of the rotating member is less than the outer diameter of the installation base, reducing the friction between the rotating member and the housing, prolonging the service life.

[0009] The present utility model is further provided that: The fixing member includes an installation channel adapted to the core shaft, and one or more oil storage grooves are arranged on the inner wall of the installation channel.

[0010] By adopting the above technical solution, the oil storage grooves store the lubricating oil, reducing the wear between the fixing member and the core shaft, and prolonging the service life.

[0011] The present utility model is further configured such that: the total length of the two first protective sleeves is adapted to the length of the first installation cavity, a first positioning recess is provided on one side of the first installation cavity, and a first positioning protrusion is provided at the position of the first protective sleeve corresponding to the first positioning recess.

[0012] By adopting the above technical solution, the total length of the two first protective sleeves is adapted to the length of the first installation cavity. Compared with the existing technology that only relies on the frictional contact of the lubricated bearing surface, in the present utility model, not only does the rotating bearing play a role in radial friction, but also the circumferential friction between the first protective sleeve and the mandrel is increased, greatly increasing the contact surface, achieving the dispersion and balance of force, making its rotation more stable, with a better sound insulation effect, a better damping effect, and an extended service life. Compared with the existing hinge, its lubricating sleeve rotates along with the mandrel. During actual use, that is, relative rotation occurs between the lubricating sleeve and the inner wall of the bushing, generating friction. In the solution of the present utility model, through the cooperation of the first positioning protrusion and the first positioning recess, the first protective sleeve is limited and clamped with the first installation cavity, preventing the first protective sleeve from rotating along with the mandrel, that is, relative rotation between the mandrel and the inner diameter wall of the first protective sleeve. And the inner diameter wall of the first protective sleeve has the function of wear resistance and lubrication. Therefore, due to the change of the relative rotation object, the sound insulation effect is better, and at the same time, the service life of the entire hinge can be extended.

[0013] The present utility model is further configured such that: the second bushing includes a second installation cavity, a second positioning recess is provided on one side of the second installation cavity, a second protective sleeve that is in interference fit with the first bushing is provided at one end of the second installation cavity corresponding to the first bushing, and a second positioning protrusion is provided at the position of the second protective sleeve corresponding to the second positioning recess.

[0014] By adopting the above technical solution, the second protective sleeve is limited and clamped with the second installation cavity, preventing the second protective sleeve from rotating along with the mandrel, that is, relative rotation between the mandrel and the inner diameter wall of the second protective sleeve. And the inner diameter wall of the second protective sleeve has the function of wear resistance and lubrication. Therefore, due to the change of the relative rotation object, the sound insulation effect is better, and at the same time, the service life of the entire hinge can be extended.

[0015] The present utility model is further configured such that: the other end of the second installation cavity relative to the second protective sleeve is the outer end, an installation clamping sleeve is provided at the outer end, a connection clamping portion is provided at one end of the installation clamping sleeve corresponding to the second installation cavity, positioning clamping teeth are provided on the outer periphery of the connection clamping portion, and the connection clamping portion is inserted into the second installation cavity and fixedly connected to the second bushing.

[0016] By adopting the above technical solution, compared with the existing hinge that uses a stepped limiting groove and screws for limiting, the technical solution of the present utility model uses plugging and interference fit to achieve connection, which is fast and convenient for assembly, has high stability, and positioning clamping teeth are provided on the outer periphery of the connection clamping portion, further strengthening the stability of the fixed connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a cross-sectional view of an embodiment of the present utility model;

[0018] Figure 2 is an exploded view of an embodiment of the present utility model;

[0019] Figure 3 is a three-dimensional view of a partial structure of the first hinge piece of an embodiment of the present utility model;

[0020] Figure 4 is a cross-sectional view of a rotating bearing of an embodiment of the present utility model;

[0021] Figure 5 is a top view of a rotating bearing of an embodiment of the present utility model;

[0022] Reference numerals: 1. mandrel, 2. first hinge piece, 21. first bushing, 22. first installation cavity, 221. first positioning recess, 3. second hinge piece, 31. second bushing, 32. second installation cavity, 321. second positioning recess, 4. first protective sleeve, 41. first positioning protrusion, 5. rotating bearing, 51. outer shell, 52. rotating member, 521. annular clamping portion, 53. fixing member, 531. installation base, 532. installation protrusion, 533. annular clamping groove, 534. installation channel, 535. oil storage groove, 54. oil storage cavity, 6. second protective sleeve, 61. second positioning protrusion, 7. installation clamping sleeve, 71. connecting clamping portion, 72. positioning clamping teeth. Detailed implementation manners

[0023] The following combines the drawings and embodiments to further describe in detail the specific implementation manners of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0024] Refer to the attached Figures 1-5, a hinge, comprising a core shaft 1, a first hinge piece 2 and a second hinge piece 3 sleeved on the core shaft 1. The first hinge piece 2 includes a first bushing 21 for installing the core shaft 1. The first bushing 21 includes a first installation cavity 22. Two first protective sleeves 4 that are in interference fit with the first installation cavity 22 are arranged in the first installation cavity 22. The second hinge piece 3 includes a second bushing 31 for installing the core shaft 1. There is a clearance between both sides of the first bushing 21 and the second bushing 31. Rotating bearings 5 sleeved outside the core shaft 1 are respectively arranged in the clearances on both sides of the first bushing 21. The rotating bearing 5 includes a housing 51, a rotating member 52 and a fixing member 53. The fixing member 53 includes an installation base 531 and an installation convex portion 532. The rotating member 52 is sleeved outside the installation convex portion 532. The installation base 531 is provided with an annular groove 533 corresponding to one end of the rotating member 52. One side of the rotating member 52 corresponding to the installation base 531 is provided with an annular clamping portion 521 adapted to the annular groove 533. The thickness of the rotating member 52 and the fixing member 53 in the inserted state is greater than the depth of the inner cavity of the housing 51. The housing 51 abuts against the second bushing 31. The rotating member 52 and the fixing member 53 are in a relative rotating state as the first hinge piece 2 or the second hinge piece 3 rotates.

[0025] In this embodiment, it is further provided that: a storage oil cavity 54 is formed by the clearance between the annular clamping portion 521 and the annular groove 533. The inner diameter of the rotating member 52 is greater than the outer diameter of the installation convex portion 532, and the outer diameter of the rotating member 52 is less than the outer diameter of the installation base 531.

[0026] In this embodiment, it is further provided that: the fixing member 53 includes an installation channel 534 adapted to the core shaft 1, and one or more oil storage grooves 535 are arranged on the inner wall of the installation channel 534.

[0027] In this embodiment, it is further provided that: the total length of the two first protective sleeves 4 is adapted to the length of the first installation cavity 22. A first positioning recess 221 is arranged on one side of the first installation cavity 22. The first protective sleeve 4 is provided with a first positioning convex portion 41 corresponding to the position of the first positioning recess 221.

[0028] In this embodiment, it is further provided that: the second bushing 31 includes a second installation cavity 32. A second positioning recess 321 is arranged on one side of the second installation cavity 32. A second protective sleeve 6 that is in interference fit with the second installation cavity 32 is arranged at one end of the second installation cavity 32 corresponding to the first bushing 21. The second protective sleeve 6 is provided with a second positioning convex portion 61 corresponding to the position of the second positioning recess 321.

[0029] In this embodiment, it is further provided that: the outer end of the second installation cavity 32 relative to the other end of the second protective sleeve 6 is provided with an installation card sleeve 7. One end of the installation card sleeve 7 corresponding to the second installation cavity 32 is provided with a connection card portion 71. A positioning card tooth 72 is arranged on the outer periphery of the connection card portion 71. The connection card portion 71 is inserted into the second installation cavity 32 and fixedly connected to the second shaft sleeve 31.

[0030] The above-mentioned "between" not only refers to the between of directions and positions, but also includes the meaning of the interaction between different parts. The above-mentioned "outer and inner" are only relative descriptions for the convenience of description and understanding, and do not exclude the use of other possibilities.

[0031] Although terms such as mandrel 1, first hinge piece 2, first shaft sleeve 21, first installation cavity 22, first positioning recess 221, second hinge piece 3, second shaft sleeve 31, second installation cavity 32, second positioning recess 321, first protective sleeve 4, first positioning protrusion 41, rotating bearing 5, housing 51, rotating member 52, annular card portion 521, fixing member 53, installation base 531, installation protrusion 532, annular card slot 533, installation channel 534, oil storage groove 535, oil storage cavity 54, second protective sleeve 6, second positioning protrusion 61, installation card sleeve 7, connection card portion 71, positioning card tooth 72 are used more frequently in this article, the possibility of using other terms is not excluded. These terms are only used to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A hinge, characterized in that: The invention also provides a method for the installation of a plurality of bearings in a plurality of bearing modules, wherein the first and second bearing modules are provided with a plurality of bearing modules, and the bearing modules are provided with a plurality of bearing modules in a plurality of bearing modules.

2. A hinge according to claim 1, characterized in that: The gap between the annular clamping portion and the annular clamping groove forms an oil storage cavity, the inner diameter of the rotating member is larger than the outer diameter of the mounting protrusion, and the outer diameter of the rotating member is smaller than the outer diameter of the mounting base.

3. A hinge according to claim 1, characterized in that: The fixing member comprises a mounting channel matched with the core shaft, and the inner wall of the mounting channel is provided with more than one oil storage groove.

4. A hinge according to claim 1, characterized in that: The total length of the two first protective covers matches the length of the first installation cavity. A first positioning recess is provided on one side of the first installation cavity, and a first positioning protrusion is provided at a position of the first protective cover corresponding to the first positioning recess.

5. A hinge according to claim 1, characterized in that: The second sleeve includes a second installation cavity, a second positioning recess is arranged on one side of the second installation cavity, a second protective sleeve which is interference fit with the second installation cavity is arranged at one end of the second installation cavity corresponding to the first sleeve, and a second positioning protrusion is arranged at the position of the second protective sleeve corresponding to the second positioning recess.

6. A hinge according to claim 5, characterized in that: The other end of the second mounting cavity relative to the second protective sleeve is the outer end, and the outer end is provided with a mounting sleeve. The mounting sleeve is provided with a connecting card portion at one end corresponding to the second mounting cavity, and the outer periphery of the connecting card portion is provided with positioning cards. The connecting card portion is inserted into the second mounting cavity and fixedly connected to the second sleeve.

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