Novel window frame inside and outside unflush structure
By using an uneven window frame structure with laser welding of the skin in urban rail and intercity sliding doors, the problem of needing to fill the gap between the window frame and the skin with repair agent was solved, improving sealing and strength, simplifying the operation process, and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-21
- Publication Date
- 2026-04-07
AI Technical Summary
During the assembly of existing urban rail and intercity sluice gate and window frames, there is a height difference between the window frame and the skin, which requires filling with repair agent, making the operation complicated and inconvenient.
The window frame features an uneven structure with uneven inner and outer edges, which are connected to the inner and outer skins respectively by laser welding, eliminating the need for filler and repairing agents and improving sealing and strength.
This technology eliminates the need for filler and repair agent during the assembly of window frames and skins, improving the convenience and reliability of urban rail and intercity sliding doors while reducing production and painting costs.
Smart Images

Figure CN224093240U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to door systems for rail transit vehicles, and more particularly to a novel window frame structure with uneven inner and outer surfaces. Background Technology
[0002] In the existing door panel structure of urban rail and intercity sliding doors, the window frame needs to be constantly adjusted during assembly to ensure it meets design requirements. During frame assembly, the gaps reserved on the inner and outer skins are larger than the window frame, creating a certain distance. The height difference between the window frame and the skin necessitates the use of putty and other repair agents, making the process complex and inconvenient.
[0003] Therefore, it is necessary to develop new window frame structures to improve ease of use. Utility Model Content
[0004] Purpose of the utility model: In view of the shortcomings and defects of the existing technology, this utility model provides a novel uneven structure for the inner and outer sides of the window frame. The uneven structure improves the strength and sealing performance of the door panel of urban rail and intercity sliding doors, solves the problem of filling the gaps generated during the assembly process of the window frame and the skin with repair agent, and improves the convenience of use.
[0005] Technical solution: The present invention provides a novel window frame structure with uneven inner and outer surfaces, characterized in that: it includes a window frame, which is connected to an inner skin and an outer skin by laser welding; the inner skin is a curved structure with a flange that fits the lower part of the window frame, and the outer skin is a curved structure with a flange that fits the upper part of the window frame.
[0006] The window frame is located on the door panel of the urban rail and intercity sliding door.
[0007] The aforementioned urban rail and intercity sliding door panels include window frames, inner skin, outer skin, and door panel frames.
[0008] The window frame is fixedly connected to the door panel frame.
[0009] The upper perimeter adhesive strip of the door panel frame covers the top of the door panel frame.
[0010] The window frame has an uneven structure inside and out.
[0011] Beneficial effects: Compared with the prior art, this utility model has the following significant advantages: The inner and outer surfaces of the window frame of this utility model are uneven, which improves the strength and sealing of the door panel of urban rail and intercity sliding doors, solves the problem of filling the gaps generated during the assembly process of the window frame and the skin with repair agent, and improves the convenience of use. At the same time, the permanent laser welding connection of this structure is superior to the pure adhesive structure, effectively improving the reliability of the door panel. Attached Figure Description
[0012] Figure 1A structural diagram illustrating the assembly of a window frame using a repair agent in the prior art.
[0013] Figure 2 This is a schematic diagram of the structure of this utility model;
[0014] Figure 3 This is a schematic diagram of the structure of the upper peripheral rubber strip in the prior art;
[0015] Figure 4 This is a schematic diagram of the upper peripheral adhesive strip of this utility model;
[0016] Figure 5 This is a schematic diagram of the structure of the inner skin in the prior art;
[0017] Figure 6 This is a schematic diagram of the structure of the inner skin of this utility model;
[0018] Figure 7 This is a schematic diagram of the structure of the outer skin in the prior art;
[0019] Figure 8 This is a schematic diagram of the structure of the outer skin of this utility model;
[0020] In the diagram, 1 represents the window frame; 2 represents the inner skin; 3 represents the outer skin; 4 represents the repair agent; and 5 represents the laser-welded edge seal. Detailed Implementation
[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0022] This utility model discloses a novel window frame with uneven inner and outer surfaces, comprising a window frame 1. The window frame 1 is connected to an inner skin 2 and an outer skin 3 via laser-welded edge sealing 5. The inner skin 2 is a curved structure with a flange that fits the lower part of the window frame 1, and the outer skin 3 is a curved structure with a flange that fits the upper part of the window frame 1. The window frame 1 is located on the door panel of a rail or intercity sliding door. The rail or intercity sliding door panel includes the window frame 1, the inner skin 2, the outer skin 3, and the door panel frame. The window frame 1 is fixedly connected to the door panel frame. A rubber strip covers the top of the door panel frame. The window frame 1 has an uneven inner and outer surface.
[0023] like Figure 1 In existing technology, window frames use repair agent 4 to connect window frame 1 with inner skin 2 and outer skin 3; such as Figure 2 In this utility model, the window frame 1 is connected to the inner skin 2 and the outer skin 3 respectively by laser welding edge sealing 5.
[0024] like Figure 3 In existing technology, the upper perimeter adhesive strip covers part of the top of the door panel frame; such as Figure 4 The upper perimeter adhesive strip of this utility model covers the top of the door panel frame.
[0025] like Figure 5 The inner skin 2 in the existing technology has a long strip structure; such as Figure 6 The inner skin 2 of this utility model is a curved structure that fits the lower part of the window frame 1.
[0026] like Figure 7 In the prior art, the outer skin 3 is a long strip structure; such as Figure 8 The outer skin 3 of this utility model is a curved structure that fits the upper part of the window frame 1.
[0027] The inner and outer skins serve functions such as appearance. In this utility model, by adding window frame flanges and optimizing the window frame cross-section to the inner and outer skins, the filling and repair agent during the door panel bonding process is eliminated. During window frame assembly, there is no need to consider whether there will be interference with the skin. The gap between the window frame and the skin is eliminated. The window frame and the skin are fixed by laser welding. Compared with the old structure, there is basically no difference in appearance, while improving the reliability of the door panel, increasing production efficiency, and reducing paint and production costs.
[0028] This utility model features an uneven inner and outer frame structure, which improves the strength and sealing of the door panel for urban rail and intercity sliding doors. It also solves the problem of needing to fill gaps in the assembly process between the window frame and the skin, thus improving ease of use. Furthermore, the permanent laser-welded connection of this structure is superior to purely adhesive structures, effectively enhancing the reliability of the door panel.
Claims
1. A novel window frame structure with uneven inner and outer surfaces, characterized in that: Includes a window frame (1), which is connected to the inner skin (2) and the outer skin (3) respectively by laser welding edge sealing (5); the inner skin (2) is a curved structure with a flange that fits the lower part of the window frame (1), and the outer skin (3) is a curved structure with a flange that fits the upper part of the window frame (1).
2. The novel uneven window frame structure according to claim 1, characterized in that: The window frame (1) is located on the door panel of the urban rail and intercity sliding door.
3. The novel window frame with uneven inner and outer surfaces according to claim 2, characterized in that: The aforementioned urban rail and intercity sliding door panel includes a window frame (1), an inner skin (2), an outer skin (3), and a door panel frame.
4. The novel uneven window frame structure according to claim 3, characterized in that: The window frame (1) is fixedly connected to the door panel frame.
5. The novel window frame with uneven inner and outer surfaces according to claim 4, characterized in that: The upper perimeter adhesive strip of the door panel frame covers the top of the door panel frame.
6. The novel window frame with uneven inner and outer surfaces according to claim 1, characterized in that: The window frame (1) has an uneven structure inside and out.