High performance needle bearing aluminium alloy hinge for doors and windows

Abstract

This utility model relates to the field of aluminum alloy door and window hinge technology, and in particular to a high-performance needle roller bearing type aluminum alloy door and window hinge. It includes a hinge shaft and two needle roller bearings rotatably connected to it. The outer surface of the hinge shaft is provided with a pressure-resistant and wear-resistant layer. The inner wall of each additional block is provided with a circumferentially formed liquid-collecting groove. Multiple first oil injection holes are formed on the upper and lower surfaces of the two cover caps, and multiple second oil injection holes are formed on the circumferential surface of the limiting ring. The needle roller bearings and hinge shaft of this utility model are designed for rolling friction, and the added pressure-resistant and wear-resistant layer makes the hinge shaft less prone to wear, thus avoiding affecting the rotational performance of the door and window hinge. Lubricating oil can be injected into the connection between the upper needle roller bearing and the hinge shaft through the upper first oil injection hole, and lubricating oil can be injected into the connection between the lower needle roller bearing and the hinge shaft through the second oil injection hole, ensuring proper lubrication distribution in the door and window hinge.

Description

Technical Field

[0001] This utility model relates to the field of aluminum alloy door and window hinge technology, and in particular to a high-performance needle roller bearing type aluminum alloy door and window hinge. Background Technology

[0002] As we all know, in people's daily lives, doors and windows usually need to be installed with hinges. Through the action of hinges, doors and windows can be rotated and opened and closed, which makes it very convenient for people to open and close doors and windows.

[0003] For example, the authorized announcement number "CN209687129U" is named Door and Window Hinges. When approved, it solves the problems of inconvenient installation, poor stability and inconvenience of adding lubricating oil in existing door and window hinges. Through the cooperation of the first fixing plate and the first threaded hole, it is convenient for users to install the first fixing plate on the door frame. Through the cooperation of the first fixing post, the first threaded groove, the bolt, the protrusion, the first limit ring and the first oiling hole.

[0004] The above-mentioned and existing technologies have the following drawbacks: the friction between the bolts and grooves in the door and window hinges easily causes bolt wear, affecting the rotation effect of the door and window hinges. The first lubrication hole is located on the surface of the first fixed post, and the second lubrication hole is located on the surface of the second fixed post. Due to gravity, the lubricating oil may not be applied evenly, resulting in inadequate lubrication of the door and window hinges. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-performance needle roller bearing type aluminum alloy door and window hinge.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a high-performance needle roller bearing type aluminum alloy door and window hinge, including a hinge shaft and two needle roller bearings rotatably connected to it. The hinge shaft has a limiting ring annularly arranged on its central surface. The two needle roller bearings are respectively arranged above and below the limiting ring. A hinge is fixedly connected to one side surface of each of the two needle roller bearings. The hinge surface has multiple mounting holes. Threaded grooves are opened at both ends of the hinge shaft. Cover caps are provided above and below the two threaded grooves. A screw is fixedly connected to the opposite side surface of the two cover caps. The screw is threaded to the threaded groove. The outer surface of the hinge shaft has a pressure-resistant and wear-resistant layer. Additional blocks are integrally formed at both ends of the needle roller bearings. Liquid collection grooves are annularly opened on the inner wall of each additional block. Multiple first oil injection holes are opened on the upper and lower surfaces of the two cover caps. Multiple second oil injection holes are opened on the circumferential surface of the limiting ring. The upper ends of the multiple second oil injection holes extend to the upper surface of the limiting ring, and the lower ends of the multiple second oil injection holes extend to the lower surface of the limiting ring.

[0008] Preferably, the upper and lower surfaces of the two caps are arc-shaped.

[0009] Preferably, the upper surface of the additional block above the same needle roller bearing is provided with a second anti-compression layer and a second wear-resistant layer from bottom to top, and the lower surface of the additional block below the same needle roller bearing is provided with a third anti-compression layer and a third wear-resistant layer from top to bottom.

[0010] Preferably, all of the mounting holes are strip-shaped holes along the left-right direction.

[0011] Preferably, the pressure-resistant and wear-resistant layer includes a first pressure-resistant layer and a first wear-resistant layer arranged sequentially from the inside to the outside. The surface of the first pressure-resistant layer has a plurality of first grooves arranged in a circumferential array. The inner wall of the first wear-resistant layer has a plurality of first protrusions arranged in a circumferential array, each corresponding to one of the first grooves. The first protrusions extend into the first grooves. The inner wall of the first wear-resistant layer has a plurality of second grooves arranged in a circumferential array. The surface of the first pressure-resistant layer has a plurality of second protrusions arranged in a circumferential array, each corresponding to one of the second grooves. The second protrusions extend into the second grooves.

[0012] Preferably, the cross-section of the lower part of the cap is a regular hexagon.

[0013] The high-performance needle roller bearing type aluminum alloy door and window hinge proposed in this utility model has the following advantages: the needle roller bearing and the hinge shaft of this door and window hinge are connected by rolling friction, resulting in low friction. The addition of a pressure-resistant and wear-resistant layer further reduces wear on the hinge shaft, preventing any impact on the hinge's rotation. Lubricating oil can be injected into the connection between the upper needle roller bearing and the hinge shaft through the first oil injection hole, and into the connection between the lower needle roller bearing and the hinge shaft through the second oil injection hole. Gravity ensures the lubricating oil is evenly distributed, guaranteeing proper lubrication of the door and window hinge. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of the structure of this utility model;

[0015] Figure 2 This is an enlarged view of position A in this utility model;

[0016] Figure 3 This is an enlarged view of position B in this utility model;

[0017] Figure 4 This is a schematic diagram of the cover cap and screw structure of this utility model;

[0018] Figure 5 This is a top view schematic diagram showing the connection relationship between the first pressure-resistant layer and the first wear-resistant layer of this utility model.

[0019] In the diagram: 1. Hinge shaft; 2. Limiting ring; 3. Needle roller bearing; 4. Hinge; 5. Mounting hole; 6. Threaded groove; 7. Cover cap; 8. Screw; 9. First pressure-resistant layer; 10. First wear-resistant layer; 11. Additional block; 12. Liquid collection groove; 13. First oil injection hole; 14. Second oil injection hole; 15. Second pressure-resistant layer; 16. Second wear-resistant layer; 17. Third pressure-resistant layer; 18. Third wear-resistant layer; 19. First groove; 20. First protrusion; 21. Second groove; 22. Second protrusion. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figure 1-5 A high-performance needle roller bearing type aluminum alloy door and window hinge includes a hinge shaft 1 and two needle roller bearings 3 rotatably connected to it. A limiting ring 2 is provided on the middle surface of the hinge shaft 1. The two needle roller bearings 3 are respectively located above and below the limiting ring 2. A hinge 4 is fixedly connected to one side surface of each of the two needle roller bearings 3. The hinge 4 has multiple mounting holes 5. Threaded grooves 6 are opened at both the upper and lower ends of the hinge shaft 1. Cover caps 7 are provided above and below the two threaded grooves 6. A screw 8 is fixedly connected to the opposite side surface of the two cover caps 7. The screw 8 is threadedly connected to the threaded groove 6. The outer surface of the hinge shaft 1 is provided with a pressure-resistant and wear-resistant layer. Additional blocks 11 are integrally formed at both the upper and lower ends of the needle roller bearings 3. Liquid collection grooves 12 are opened in the inner wall of the additional blocks 11. Multiple first oil injection holes 13 are opened on the upper and lower surfaces of the two cover caps 7. This arrangement ensures that the door and window hinge can be reversed without affecting the addition of lubricating oil. The limiting ring 2 has multiple second oil injection holes 14 on its circumferential surface. The upper ends of the multiple second oil injection holes 14 extend to the upper surface of the limiting ring 2, and the lower ends of the multiple second oil injection holes 14 extend to the lower surface of the limiting ring 2. This arrangement ensures that the door and window hinges can be reversed, and that adding lubricating oil will not be affected after reversing.

[0022] The top and bottom surfaces of the two caps 7 are curved. The curved surfaces prevent dust accumulation on the caps 7 and also enhance their strength.

[0023] The upper surface of the auxiliary block 11 above the same needle roller bearing 3 is provided with a second pressure-resistant layer 15 and a second wear-resistant layer 16 from bottom to top. The lower surface of the auxiliary block 11 below the same needle roller bearing 3 is provided with a third pressure-resistant layer 17 and a third wear-resistant layer 18 from top to bottom. The second pressure-resistant layer 15 and the third pressure-resistant layer 17 are made of epoxy resin, and the second wear-resistant layer 16 and the third wear-resistant layer 18 are made of ceramic.

[0024] All mounting holes 5 are strip-shaped holes running longitudinally in the left-right direction. This design facilitates adjustment of the installation position of doors and windows.

[0025] The pressure-resistant and wear-resistant layer includes a first pressure-resistant layer 9 and a first wear-resistant layer 10 arranged sequentially from the inside to the outside. The first pressure-resistant layer 9 is made of epoxy resin, and the first wear-resistant layer 10 is made of ceramic. The surface of the first pressure-resistant layer 9 has a plurality of first grooves 19 arranged in a circumferential array. The inner wall of the first wear-resistant layer 10 has a plurality of first protrusions 20 arranged in a circumferential array, each corresponding to one of the first grooves 19. The first protrusions 20 extend into the first grooves 19. The inner wall of the first wear-resistant layer 10 has a plurality of second grooves 21 arranged in a circumferential array. The surface of the first pressure-resistant layer 9 has a plurality of second protrusions 22 arranged in a circumferential array, each corresponding to one of the second grooves 21. The second protrusions 22 extend into the second grooves 21.

[0026] The lower part of the cap 7 has a regular hexagonal cross-section. This hexagonal shape facilitates tightening the cap 7 with a wrench.

[0027] Working principle: During installation, two needle roller bearings 3 are fitted onto the hinge shaft 1. Then, by tightening the cover cap 7, the needle roller bearings 3 are threadedly connected to the threaded groove 6 via the screw 8. The needle roller bearings 3 reduce friction. At the same time, the wear-resistant and pressure-resistant layer increases the wear-resistant and pressure-resistant properties of the hinge shaft 1. In summary, the needle roller bearings 3 and the hinge shaft 1 in this door and window hinge exhibit rolling friction with low friction. In addition, the wear-resistant and pressure-resistant layer makes the hinge shaft 1 less prone to wear, thus avoiding affecting the rotation effect of the door and window hinge.

[0028] Lubricating oil can be injected into the connection between the upper needle roller bearing 3 and the hinge shaft 1 through the first oil injection hole 13, and lubricating oil can be injected into the connection between the lower needle roller bearing 3 and the hinge shaft 1 through the second oil injection hole 14. The lubricating oil will be evenly spread due to gravity, so that the lubricating oil of this door and window hinge is properly distributed.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-performance needle roller bearing type aluminum alloy door and window hinge, comprising a hinge shaft (1) and two needle roller bearings (3) rotatably connected thereto, characterized in that, A limiting ring (2) is provided on the middle surface of the hinge shaft (1). Two needle roller bearings (3) are respectively arranged above and below the limiting ring (2). A hinge (4) is fixedly connected to one side surface of each of the two needle roller bearings (3). The surface of the hinge (4) is provided with multiple mounting holes (5). Threaded grooves (6) are provided at both the upper and lower ends of the hinge shaft (1). Cover caps (7) are provided above and below the two threaded grooves (6). A screw (8) is fixedly connected to the opposite side surface of the two cover caps (7). The screw (8) is threaded with the threaded groove (6). The hinge shaft (1) is provided with a pressure-resistant and wear-resistant layer on its outer surface. The needle roller bearing (3) is integrally formed with an additional block (11) at both ends. The inner wall of the additional block (11) is provided with a liquid collection groove (12) in an annular shape. The upper and lower surfaces of the two cover caps (7) are provided with multiple first oil injection holes (13). The circumferential surface of the limiting ring (2) is provided with multiple second oil injection holes (14). The upper ends of the multiple second oil injection holes (14) extend to the upper surface of the limiting ring (2), and the lower ends of the multiple second oil injection holes (14) extend to the lower surface of the limiting ring (2).

2. The high-performance needle roller bearing type aluminum alloy door and window hinge according to claim 1, characterized in that, The upper and lower surfaces of the two caps (7) are arc-shaped.

3. The high-performance needle roller bearing type aluminum alloy door and window hinge according to claim 1, characterized in that, The upper surface of the additional block (11) above the same needle roller bearing (3) is provided with a second pressure-resistant layer (15) and a second wear-resistant layer (16) from bottom to top, and the lower surface of the additional block (11) below the same needle roller bearing (3) is provided with a third pressure-resistant layer (17) and a third wear-resistant layer (18) from top to bottom.

4. The high-performance needle roller bearing type aluminum alloy door and window hinge according to claim 1, characterized in that, All of the mounting holes (5) are strip-shaped holes along the left and right directions.

5. The high-performance needle roller bearing type aluminum alloy door and window hinge according to claim 1, characterized in that, The pressure-resistant and wear-resistant layer includes a first pressure-resistant layer (9) and a first wear-resistant layer (10) arranged sequentially from the inside to the outside. The first pressure-resistant layer (9) has a plurality of first grooves (19) arranged in a circumferential array on its surface. The first wear-resistant layer (10) has a plurality of first protrusions (20) arranged in a circumferential array on its inner wall, which correspond one-to-one with the first grooves (19). The first protrusions (20) extend into the first grooves (19). The first wear-resistant layer (10) has a plurality of second grooves (21) arranged in a circumferential array on its inner wall. The first pressure-resistant layer (9) has a plurality of second protrusions (22) arranged in a circumferential array on its surface, which correspond one-to-one with the second grooves (21). The second protrusions (22) extend into the second grooves (21).

6. The high-performance needle roller bearing type aluminum alloy door and window hinge according to claim 1, characterized in that, The lower part of the cap (7) has a regular hexagonal cross section.

Images