Lower bearing for hardware of side-hung top-hung door and window
By introducing a buffer structure with a buffer rod and spring into the lower bearing of the hardware of the casement top-hung door and window, as well as the design of the fixed bearing and bearing wheel, the problems of uneven rotation and high wear are solved, resulting in a longer service life and greater practicality.
Patent Information
- Application Number
- CN202520074718.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-01-13
AI Technical Summary
The lower bearing of the existing casement and top-hung door and window hardware does not rotate smoothly, resulting in high wear, reduced service life and practicality.
A lower bearing structure was designed, comprising a support, a rotating shaft, a buffer rod, a buffer plate, a spring, a fixed bearing, and a bearing wheel. The buffering effect of the buffer rod and the spring improves the smoothness of rotation, while the fixed bearing and the bearing wheel reduce wear.
It improves the service life and practicality of doors and windows, reduces wear on rotating shafts, and increases the smoothness and stability of rotation.
Smart Images

Figure CN223767352U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hardware technology, specifically to a lower bearing for a casement window / window hardware component. Background Technology
[0002] As is well known, casement and top-hung doors and windows are usually equipped with a hardware system, which includes a lower bearing consisting of a fixed support and a hinge.
[0003] For example, the patent with publication number "CN2526459" and title "A Lower Bearing for Hardware of Hinged Top-Hung Doors and Windows" discloses that "This utility model discloses a lower bearing for hardware of hinged top-hung doors and windows, including a fixed support, with an upper positioning pin and a lower positioning pin fixed on its upper and lower parts. One end of the support has protrusions on both sides, and screws are fixed on the protrusions. A rotating shaft that can rotate longitudinally is sleeved on the screws. As long as the rotating shaft is connected to the relevant parts of the hinged top-hung door and window hardware, the hinged top-hung door and window can be used normally. Its structure is compact, stable and reliable."
[0004] In use, the shaft of the above structure does not rotate smoothly, resulting in a poor user experience. Furthermore, the shaft experiences high wear during use, which reduces the lifespan and practicality of the structure. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] To address the shortcomings of existing technologies, this utility model provides a lower bearing for hardware used in casement and top-hung doors and windows.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, this utility model provides the following technical solution: a lower bearing for hinged window / pane hardware, comprising a support, a rotating shaft, and a connecting plate. The support is provided with a positioning seat and a buffer rod. The buffer rod is installed on the upper half of the support, and a buffer plate is provided on the buffer rod. A spring connects the buffer plate and the buffer rod. The positioning seats are respectively installed on both sides of the support. A fixed bearing is provided on the positioning seat and is embedded inside the positioning seat. A bearing wheel is provided inside the fixed bearing. The rotating shaft is located in the middle part of the support. A rotating block is provided on the rotating shaft. The rotating blocks are respectively installed at both ends of the rotating shaft and pass through the fixed bearing. The connecting plate is installed on the rotating shaft. An mounting plate is provided on the connecting plate. The mounting plate is installed at one end of the connecting plate and has a first mounting hole.
[0009] To improve the practicality of this structure, the present invention is improved by providing a limiting seat on one side of the bearing wheel, the limiting seat being fixedly installed on the fixed bearing, the support being made of stainless steel, and the buffer rod being detachably connected to the support.
[0010] To improve the service life of this structure, the present invention is improved by providing multiple springs, which are fixedly installed on the buffer plate, and the connecting plate and the mounting plate are provided with anti-wear layers.
[0011] (III) Beneficial Effects
[0012] Compared with the prior art, this utility model provides a lower bearing for hardware of casement and top-hung doors and windows, which has the following beneficial effects:
[0013] This is a lower bearing for hardware used in casement and top-hung doors and windows. The support is equipped with a positioning seat and a buffer rod. The buffer rod is installed on the upper part of the support and has a buffer plate. A spring connects the buffer plate and the buffer rod. By providing the buffer rod and buffer plate, a buffering effect is added when the door or window is closed, indirectly increasing the service life of the structure. The positioning seat is equipped with a fixed bearing, which is embedded inside the positioning seat. By providing the fixed bearing, the smoothness of the rotating shaft is improved and the wear of the rotating shaft is reduced, thereby improving the practicality of the structure. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model;
[0015] Figure 2 This is a side view of the present invention;
[0016] Figure 3 This utility model Figure 2 A magnified schematic diagram of the local structure at point A;
[0017] Figure 4 This utility model Figure 1 Schematic diagram of the structure of the fixed bearing;
[0018] In the diagram: 1. Support; 2. Buffer rod; 3. Rotating shaft; 4. Fixed bearing; 5. Rotating block; 6. Limit seat; 7. Connecting plate; 8. Mounting plate; 9. First mounting hole; 10. Second mounting hole; 11. Positioning seat; 12. Spring; 13. Buffer plate; 14. Bearing wheel. Detailed Implementation
[0019] 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.
[0020] Please see Figure 1-4 This utility model discloses a lower bearing for a hinged top-hung door / window hardware component, comprising a support 1, a rotating shaft 3, and a connecting plate 7. The support 1 is provided with a positioning seat 11 and a buffer rod 2. The buffer rod 2 is installed on the upper half of the support 1, and a buffer plate 13 is provided on the buffer rod 2. A spring 12 connects the buffer plate 13 and the buffer rod 2. The positioning seats 11 are respectively installed on both sides of the support 1, and a fixed bearing 4 is provided on the positioning seat 11. The fixed bearing 4 is embedded inside the positioning seat 11, and a bearing wheel 14 is provided inside the fixed bearing 4. The rotating shaft 3 is located in the middle part of the support 1, and a rotating block 5 is provided on the rotating shaft 3. The rotating block 5 is respectively installed at both ends of the rotating shaft 3 and passes through the fixed bearing 4. The connecting plate 7 is installed on the rotating shaft 3, and an mounting plate 8 is provided on the connecting plate 7. The mounting plate 8 is installed at one end of the connecting plate 7, and a first mounting hole 9 is provided on the mounting plate 8.
[0021] In use, the lower bearing of this utility model for the hardware of a top-hung door and window is first fixed to the designated position through the second mounting hole 10. Then, the top-hung door and window is fixed to the mounting plate 8 through the first mounting hole 9. After installation, when the top-hung door and window are opened, the connecting plate 7 will drive the rotating shaft 3 to rotate "up" and then be fixed by the support device. The support device is not on the support 1, so it will not be explained in detail here. When the top-hung door and window are closed, the connecting plate 7 will drive the rotating shaft 3 to rotate "down" and then hit the buffer plate 13 on the buffer rod 2, further compressing the spring 12, thereby achieving a buffering effect, indirectly improving the service life of the structure and improving its practicality. The rotation of the rotating shaft 3 "up" and "down" in this structure is achieved by the fixed bearing 4. By adding the fixed bearing 4, the smoothness of the rotating shaft 3 is improved and the wear of the rotating shaft 3 is reduced. Moreover, the interior of the fixed bearing 4 uses a bearing wheel instead of the original ball bearing, thus making the fixed bearing 4 less prone to damage.
[0022] To improve the practicality of this structure, the present invention includes the following improvements: a limiting seat 6 is provided on one side of the bearing wheel 14, the limiting seat 6 is fixedly installed on the fixed bearing 4, the support 1 is made of stainless steel, and the buffer rod 2 is detachably connected to the support 1. By providing the limiting seat 6, the bearing wheel 14 can be limited, thereby improving the stability of the fixed bearing 4 during use. The detachable connection between the buffer rod 2 and the support 1 facilitates the maintenance and replacement of the buffer rod 2.
[0023] To improve the service life of this structure, the present invention is improved by providing multiple springs 12 and fixing them on the buffer plate 13. Both the connecting plate 7 and the mounting plate 8 are provided with anti-wear layers. Multiple springs 12 can improve the buffering effect of this structure, and the anti-wear layers can improve the wear resistance of the connecting plate 7 and the mounting plate 8.
[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A bottom bearing for a side hung door and window hardware, characterized in that, Including support (1), rotating shaft (3) and connecting plate (7), the support (1) is equipped with positioning seat (11) and buffer rod (2), the buffer rod (2) is installed in the upper half of support (1), the buffer rod (2) is equipped with buffer plate (13), and the buffer plate (13) is connected with spring (12) between buffer rod (2), the positioning seat (11) is installed in both sides of support (1) respectively, the positioning seat (11) is equipped with fixed bearing (4), the fixed bearing (4) is embedded in the inside of positioning seat (11), and the inside of fixed bearing (4) is equipped with bearing wheel (14), the rotating shaft (3) is located in the middle part of support (1), the rotating shaft (3) is equipped with rotating block (5), the rotating block (5) is installed in both ends of rotating shaft (3) respectively, and penetrates fixed bearing (4), the connecting plate (7) is installed on rotating shaft (3), the connecting plate (7) is equipped with mounting plate (8), the mounting plate (8) is installed in one end of connecting plate (7), the mounting plate (8) is equipped with first mounting hole (9).
2. A bottom bearing for a side-hung over-head door and window hardware according to claim 1, characterized in that, The side of bearing wheel (14) is equipped with limit seat (6), the limit seat (6) is fixedly installed on fixed bearing (4).
3. A bottom bearing for a side-hung over-head door and window hardware according to claim 2, characterized in that, The material of support (1) is stainless steel.
4. A bottom bearing for a side-hung over-head door and window hardware according to claim 1, characterized in that, The spring (12) is equipped with multiple, and is fixedly installed on buffer plate (13).
5. A bottom bearing for a side-hung over-head door and window hardware according to claim 1, wherein, The connecting plate (7) and mounting plate (8) are all equipped with wear-resistant layer.
6. A bottom bearing for a side-hung over-head door and window hardware according to claim 5, wherein, The buffer rod (2) is equipped with detachable connection between support (1).