Hidden type side-hung inward tilting hinge for U-groove type door and window
By designing an adjustable pad and side back panel assembly, the problem of the inability to adjust the thickness of the hinged hinge was solved, achieving versatility and convenient assembly to adapt to different profile groove depths.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-28
- Publication Date
- 2026-04-14
AI Technical Summary
The existing casement hinges cannot adjust the thickness of the backing plate to accommodate different profile specifications, and the numerous riveting points make assembly inconvenient.
The design incorporates adjustable pad and side backplate assemblies, allowing for thickness adjustment of the pad and backplate via embedded nuts and set screws. Riveting connections are eliminated, and a one-piece connecting plate structure is adopted.
It achieves versatility to adapt to different profile groove depths, simplifies the production process, and improves assembly convenience.
Smart Images

Figure CN224120097U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of casement hinges for doors and windows, and specifically relates to a U-groove type concealed casement hinge for doors and windows. Background Technology
[0002] Tilt-in hinges are generally used in tilt-in windows;
[0003] Currently, the upper backing plate of the casement tilt-in hinge is generally not adjustable. Because the depth between the large and small grooves of profiles produced by different manufacturers is inconsistent and the depth difference is also different, in order to adapt to various specifications of door and window profiles, casement tilt-in hinges can only be equipped with backing plates of various thicknesses, which is not conducive to production.
[0004] In addition, the current structure has many riveting points, which makes assembly inconvenient, complicated, and difficult to produce. Utility Model Content
[0005] This utility model provides a concealed casement hinge for U-groove type doors and windows, which can solve the problems pointed out in the background art.
[0006] A concealed casement hinge for U-shaped doors and windows includes a casement hinge body. The casement hinge body includes a connecting plate. One end of the connecting plate is provided with a rotating connecting plate, a bearing connecting plate, and an upper hinge corner in sequence. An adjustable pad assembly is provided on the upper surface of the upper hinge corner. The adjustable pad assembly is provided with a first adjusting connecting component, and the thickness of the adjustable pad assembly is adjusted by the first adjusting connecting component.
[0007] Preferably, the first adjusting connection assembly includes a first embedded nut and a first set screw. The first embedded nut is embedded in the first inner hole of the adjusting pad assembly, and the first set screw is engaged with the first embedded nut.
[0008] Preferably, an adjustable side back panel assembly is provided on the outer end face of the upper hinge corner, and a second adjusting connection assembly is provided on the adjustable side back panel assembly, through which the thickness of the adjustable side back panel assembly is adjusted.
[0009] Preferably, the second adjusting connection assembly includes a second embedded nut and a second set screw. The second embedded nut is embedded in the second inner hole of the adjusting side back plate assembly, and the second set screw is engaged with the second embedded nut.
[0010] Preferably, one end of the swivel connecting plate is connected to one end of the connecting plate via a first riveting rivet, and the other end of the swivel connecting plate is connected to a first elongated hole on the upper surface of the upper hinge corner via a first sliding rivet. The middle part of the swivel connecting plate is connected to the bearing connecting plate located above it via a second riveting rivet. One end of the bearing connecting plate is connected to the upper surface of the upper hinge corner via a spindle screw, and the other end of the bearing connecting plate is connected to a second elongated hole on the connecting plate via a second sliding rivet.
[0011] Preferably, a locking block assembly is provided on the inner cross-section of the upper hinge corner.
[0012] Preferably, a lock seat is connected to the connecting plate.
[0013] Preferably, the outer end of the connecting plate is provided with a screw-out rivet and a short rotating plate.
[0014] Preferably, the connecting plate is connected to the adjusting short connecting plate via an eccentric adjusting screw.
[0015] Beneficial effects: This utility model provides a concealed casement hinge for U-groove doors and windows. By designing an adjustable pad assembly structure and an adjustable side back panel assembly structure, it can meet the different groove depths or groove depth differences of different profiles, so that it does not need to produce pads or back panels of different thicknesses. In addition, the connecting plate is integrated, eliminating the riveting connection and making it easier to produce. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the split structure of this utility model.
[0017] Figure 2 This is a schematic diagram of the overall structure of this utility model.
[0018] Explanation of reference numerals in the attached figures:
[0019] The following are the labels in the diagram: Connecting plate 1; Second elongated hole 11; Unscrew connecting plate 2; First riveting rivet 21; First sliding rivet 22; Second riveting rivet 23; Bearing connecting plate 3; Shaft screw 31; Second sliding rivet 32; Upper hinge corner 4; First elongated hole 42; Adjustable pad assembly 5; First recessed hole 51; Adjustable side back plate assembly 6; Second recessed hole 61; First embedded nut 71; First set screw 72; Second embedded nut 81; Second set screw 82; Locking block assembly 9; Lock seat 10; Unscrew rivet 20; Short rotating plate 30; Eccentric adjusting screw 40; Short connecting plate 50. Detailed Implementation
[0020] The following describes a specific embodiment of the present invention in detail with reference to the accompanying drawings. However, it should be understood that the scope of protection of the present invention is not limited to the specific embodiment.
[0021] Example 1:
[0022] like Figure 1-2 As shown in the figure, this utility model provides a U-shaped door and window concealed casement inward hinge. The U-shaped door and window concealed casement inward hinge includes a casement inward hinge body. The casement inward hinge body includes a connecting plate 1. One end of the connecting plate 1 is provided with a rotating connecting plate 2, a bearing connecting plate 3 and an upper hinge corner 4 in sequence. The upper surface of the upper hinge corner 4 is provided with an adjustable pad assembly 5. The adjustable pad assembly 5 is provided with a first adjusting connecting component. The thickness of the adjustable pad assembly 5 is adjusted by the first adjusting connecting component.
[0023] Specifically, the first adjusting connection assembly includes a first embedded nut 71 and a first set screw 72. The first embedded nut 71 is embedded in the first inner hole 51 of the adjusting pad assembly 5. The first set screw 72 is connected to the first embedded nut 71. The working thickness of the adjusting pad assembly 5 is changed by the unscrewing length of the first set screw 72.
[0024] Specifically, one end of the swivel connecting plate 2 is connected to one end of the connecting plate 1 via a first riveting rivet 21, and the other end of the swivel connecting plate 2 is connected to the first elongated hole 42 on the upper surface of the upper hinge corner 4 via a first sliding rivet 22. The middle part of the swivel connecting plate 2 is connected to the bearing connecting plate 3 located above it via a second riveting rivet 23. One end of the bearing connecting plate 3 is connected to the upper surface of the upper hinge corner 4 via a spindle screw 31, and the other end of the bearing connecting plate 3 is connected to the second elongated hole 11 on the connecting plate 1 via a second sliding rivet 32.
[0025] The following structure is the conventional structure of the upper hinge. How it cooperates with other components will not be described in detail. A locking block assembly 9 is provided on the inner cross section of the upper hinge corner 4. A lock seat 10 is connected to the connecting plate 1. A screw-out rivet 20 and a short rotating piece 30 are provided on the outer end of the connecting plate 1. The connecting plate 1 is connected to the adjusting short connecting plate 50 through the eccentric adjusting screw 40.
[0026] Example 2:
[0027] An adjustable side back panel assembly 6 is provided on the outer end face of the upper hinge corner 4. The adjustable side back panel assembly 6 is provided with a second adjustment connecting assembly, and the thickness of the adjustable side back panel assembly 6 is adjusted by the second adjustment connecting assembly.
[0028] Specifically, the second adjusting connection assembly includes a second embedded nut 81 and a second set screw 82. The second embedded nut 81 is embedded in the second inner hole 61 of the adjustable side back panel assembly 6. The second set screw 82 is connected to the second embedded nut 81. The working thickness of the adjustable side back panel assembly 6 can be changed by the unscrewing length of the second set screw 82.
[0029] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any variations that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.
Claims
1. A concealed casement hinge for U-groove type doors and windows, comprising a casement hinge body, wherein the casement hinge body includes a connecting plate (1), and one end of the connecting plate (1) is sequentially provided with a rotating connecting plate (2), a bearing connecting plate (3), and an upper hinge corner (4), characterized in that: An adjustable pad assembly (5) is provided on the upper end surface of the upper hinge corner (4). The adjustable pad assembly (5) is provided with a first adjusting connection assembly, and the thickness of the adjustable pad assembly (5) is adjusted by the first adjusting connection assembly.
2. The concealed casement hinge for U-shaped doors and windows according to claim 1, characterized in that: The first adjusting connection assembly includes a first insert nut (71) and a first set screw (72). The first insert nut (71) is embedded in the first inner hole (51) of the adjusting pad assembly (5), and the first set screw (72) is engaged with the first insert nut (71).
3. The concealed casement hinge for U-shaped doors and windows according to claim 2, characterized in that: An adjustable side back panel assembly (6) is provided on the outer end face of the upper hinge corner (4). The adjustable side back panel assembly (6) is provided with a second adjustment connection assembly, and the thickness of the adjustable side back panel assembly (6) is adjusted by the second adjustment connection assembly.
4. The concealed casement hinge for U-shaped doors and windows according to claim 3, characterized in that: The second adjusting connection assembly includes a second insert nut (81) and a second set screw (82). The second insert nut (81) is embedded in the second inner hole (61) of the adjusting side back plate assembly (6), and the second set screw (82) is engaged with the second insert nut (81).
5. A concealed casement hinge for U-shaped doors and windows according to any one of claims 1-4, characterized in that: One end of the swivel connecting plate (2) is connected to one end of the connecting plate (1) by a first riveting rivet (21). The other end of the swivel connecting plate (2) is connected to the first elongated hole (42) on the upper surface of the upper hinge corner (4) by a first sliding rivet (22). The middle part of the swivel connecting plate (2) is connected to the bearing connecting plate (3) located above it by a second riveting rivet (23). One end of the bearing connecting plate (3) is connected to the upper surface of the upper hinge corner (4) by a spindle screw (31). The other end of the bearing connecting plate (3) is connected to the second elongated hole (11) on the connecting plate (1) by a second sliding rivet (32).
6. A concealed casement hinge for U-shaped doors and windows according to any one of claims 1-4, characterized in that: A locking block assembly (9) is provided on the inner cross-section of the upper hinge corner (4).
7. A concealed casement hinge for U-shaped doors and windows according to any one of claims 1-4, characterized in that: The connecting plate (1) is connected to the lock seat (10).
8. A concealed casement hinge for U-shaped doors and windows according to any one of claims 1-4, characterized in that: The outer end of the connecting plate (1) is provided with a screw-out rivet (20) and a short rotating plate (30).
9. A concealed casement hinge for U-shaped doors and windows according to any one of claims 1-4, characterized in that: The connecting plate (1) is connected to the adjusting short connecting plate (50) via an eccentric adjusting screw (40).