End side wall mounting structure for type B metro vehicle
By using a split sidewall structure and components such as upper wall panels, lower wall panels, and Velcro fasteners, the problems of small installation space, insufficient strength, and poor aesthetics of the end sidewalls of Type B subway cars have been solved, achieving an efficient and aesthetically pleasing installation effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CRRC CHANGCHUN RAILWAY VEHICLES CO LTD
- Filing Date
- 2024-06-03
- Publication Date
- 2026-06-23
AI Technical Summary
The existing side wall structure at the end of the B-type subway car has problems such as small installation space, low efficiency, exposed nails, insufficient strength and limited materials when installing the waist support, which affects the aesthetics and installation difficulty.
The system adopts a split side wall structure, including components such as upper wall panel, lower wall panel, support beam, lumbar support mounting base and nylon fastener. It is connected by industrial fasteners and nylon fasteners to achieve a tight connection between the side wall and the lumbar support, avoid exposed nails, enhance strength and optimize installation space.
It improves installation efficiency, enhances the strength and aesthetics of the side walls, avoids exposed nails, provides more operating space, and improves the overall effect after assembly.
Smart Images

Figure CN118439064B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of rail vehicle manufacturing technology, and in particular relates to the end side wall mounting structure of a Type B subway vehicle. Background Technology
[0002] The sidewall of an urban rail vehicle is a relatively complex component in its interior design and an important part of the vehicle's interior decoration. Sidewall panels typically house side windows, fire hammers, advertising frames, LCD displays, seats, lumbar supports, and other equipment. The installation of these components presents certain difficulties, especially the installation of the lumbar supports to the end sidewalls. This is significantly affected by the installation space, the shape of the lumbar supports, and the material of the sidewall panels. Because there is no operating space during lumbar support installation, an inspection door needs to be installed on the lower side of the lumbar support to secure it to the interior sidewall. This inspection door is fixed with exposed nails, making it vulnerable to damage. Furthermore, the overall size of the lumbar support needs to be relatively large, limiting its shape. In recent years, subway users have had higher requirements for the material of the sidewall panels and the shape of the lumbar supports. Therefore, improving the existing end sidewall structure is particularly important. This can not only improve the production efficiency of ongoing projects but also inspire new ideas for the optimized design of future projects.
[0003] The shortcomings of the existing end side wall panel and lumbar support installation structure:
[0004] (1) The side wall panel has an overall structure. At the installation location of the waist support, a process hole is opened in the side wall. At the same time, sufficient space is reserved at the bottom of the waist support to open an inspection door for installation. This solution has a small installation space, low efficiency, and the waist support is thick, with exposed nails, which is not aesthetically pleasing.
[0005] (2) The side wall and lumbar support integrated structure requires the side wall to be made of fiberglass and integrally formed with the lumbar support, which increases the cost. After the side wall is installed, there is no installation point in the middle, and the lumbar support is easy to shake and has insufficient strength. Moreover, this structure is limited by the wall panel material. Summary of the Invention
[0006] This invention aims to solve the problems of insufficient installation strength of side walls, excessive gaps between side wall panels and end wall panels and vertical cover panels, small installation space making operation difficult, exposed nails after installation of the lumbar support, limited shape, and limited side wall material. Therefore, it provides an end side wall installation structure for B-type subway vehicles that can ensure a tight connection between the side wall panels and the partition wall, lumbar support and vertical cover panels, facilitate installation and disassembly, improve assembly efficiency, and enhance the aesthetics after assembly.
[0007] To achieve the above-mentioned objectives, this invention provides a side wall mounting structure for the end of a type B subway vehicle, characterized in that it includes a car body side wall, an interior side wall, and a lumbar support. The interior side wall includes an upper wall panel, a top mounting seat, a side top plate baffle, an upper wall panel frame, a lower wall panel, a lower wall panel top mounting seat, a support beam, and a lower wall panel frame. The upper wall panel has an upper wall panel frame on its inner side, and the lower wall panel has a lower wall panel frame on its inner side. The upper wall panel has an upper wall panel mounting seat and a side top plate baffle for connecting with the car body side wall. The lower wall panel has an upper wall panel mounting seat and a side top plate baffle for connecting with the car body side wall. A support beam is provided on the lower side of the panel. The support beam is installed on the side wall of the vehicle body using an industrial snap-on method. A lower wall panel mounting seat is provided on the upper side of the lower wall panel. The back of the lumbar support is provided with an upper lumbar support mounting seat and a lower lumbar support mounting seat for fixing to the sliding groove of the side wall of the vehicle body. An upward-facing L-shaped block is provided on the upper side of the upper lumbar support mounting seat. An insertion groove for inserting the upper wall panel is formed between the L-shaped block and the back of the lumbar support. The lower lumbar support mounting seat and the lower wall panel mounting seat are fixed together to the sliding groove of the side wall of the vehicle body. The back of the lower lumbar support is close to the outer side of the lower wall panel.
[0008] Furthermore, it also includes a cover plate mounting base, wherein the side of the inner side wall is provided with a cover plate mounting base for fixed connection with the cover plate, and the end of the inner side wall at the contact position with the cover plate is provided with a corner, and the outer surface of the corner is in contact with the surface of the cover plate.
[0009] Furthermore, it also includes Velcro fasteners, with a corner at the end of the inner side wall where it contacts the partition wall. The outer surface of the corner contacts the surface of the partition wall, and the inner side of the corner is connected to the outer side of the L-shaped aluminum profile on the partition wall via Velcro fasteners.
[0010] Furthermore, the insertion slot is provided with a shock-absorbing pad.
[0011] This invention relates to the advantages of the end sidewall mounting structure for Type B subway cars:
[0012] (1) The split side wall structure solves the problems of exposed nails, limited shape, and limited side wall material after the lumbar support is installed.
[0013] (2) The split side wall structure provides a large operating space, making it convenient for installation and disassembly, and improving assembly efficiency.
[0014] (3) The split side wall structure has high strength and large operating space, which avoids damage by passengers.
[0015] (4) The split side wall structure can ensure that the side wall panels are tightly connected with the partition wall, waist back and vertical cover, without the need to leave gaps, which improves the aesthetics after assembly. Attached Figure Description
[0016] Figure 1 This is a front view of the side wall structure;
[0017] Figure 2 This is a rear view of the side wall structure;
[0018] Figure 3 Lower wall panel installation diagram;
[0019] Figure 4 Lumbar support installation diagram;
[0020] Figure 5 Wall panel installation diagram;
[0021] Figure 6 The mounting interface between the upper wall panel and the vehicle body;
[0022] Figure 7 Side wall and vertical cover plate installation interface;
[0023] Figure 8 Installation interface between the upper wall panel and the lumbar support;
[0024] Figure 9 Installation interfaces between side walls and partition walls;
[0025] The components include: 1. Upper wall panel; 2. Top mounting base; 3. Side top panel baffle; 4. Vertical cover mounting base; 5. Velcro; 6. Upper wall panel frame; 7. Lower wall panel; 8. Lower wall panel mounting base; 9. Support beam; 10. Lower wall panel frame; 11. Waist support; 12. Upper waist support mounting base; 13. Lower waist support mounting base; 14. Vertical cover; 15. Insertion groove. Detailed Implementation
[0026] To better understand the purpose, structure, and function of this invention, the following detailed description of a B-type subway vehicle end sidewall mounting structure is provided in conjunction with the accompanying drawings.
[0027] Reference Figure 1 and Figure 2 The side wall mounting structure at the end of the B-type subway vehicle includes a car body side wall, an interior side wall, and a lumbar support 11. The interior side wall includes an upper wall panel 1, an upper wall panel top mounting seat 2, a side top plate baffle 3, a vertical cover mounting seat 4, a Velcro 5, an upper wall panel frame 6, a lower wall panel 7, a lower wall panel top mounting seat 8, a support beam 9, and a lower wall panel frame 10. The back of the lumbar support 11 is equipped with an upper lumbar support mounting seat 12 and a lower lumbar support mounting seat 13 for fixing to the sliding groove of the car body side wall. The upper wall panel 1 has an upper wall panel frame 6 on its inner side, and the lower wall panel has a lower wall panel frame 10 on its inner side. The upper wall panel has an upper wall panel mounting seat 2 and a side top plate baffle 3 on its upper side. The lower wall panel has a support beam 9 on its lower side, and a lower wall panel mounting seat 8 on its upper side.
[0028] The interior side walls are designed as a split structure, with the middle area serving as a lumbar support. The installation sequence is to first install the lower wall panel 7, then the lumbar support 11, and finally the upper wall panel 1. All installation points are inside the wall panels, inaccessible to passengers and not easily disassembled, thus improving safety performance.
[0029] For details on lower wall panel installation, please refer to [link / reference]. Figure 3 The wall panels are connected to the vehicle body side walls by industrial fasteners through the support beam 9.
[0030] For details on the installation interfaces of the interior side walls and vertical cover panels, please refer to [link / reference]. Figure 7 The interior side wall is provided with a mounting base 4 for the cover plate. The mounting base 4 and the cover plate 14 are fixed together with bolts. The end of the interior side wall where it contacts the cover plate 14 is provided with a corner. The outer surface of the corner contacts the surface of the cover plate, ensuring that the side wall and the cover plate 14 are firmly installed without gaps.
[0031] For details on the installation interfaces of the interior side walls and partitions, please refer to [link / reference]. Figure 9 The interior side wall has a corner at the end where it contacts the partition wall. The outer surface of the corner contacts the surface of the partition wall, and there is no gap between them after installation. The inner side of the corner is connected to the outer side of the L-shaped aluminum profile on the partition wall by a nylon hook and loop fastener 5. After installation, it fits tightly with the partition wall without any gap.
[0032] For lumbar support installation details, please refer to [link / reference]. Figure 4 After the lower wall panel is installed, the lumbar support is fixed to the aluminum structure of the vehicle side wall using the upper lumbar support mounting bracket 12 and the lower lumbar support mounting bracket 13. The upper lumbar support mounting bracket 12 has an upward-facing L-shaped block on its upper side, forming a slot between the L-shaped block and the back of the lumbar support for inserting the upper wall panel. The lower lumbar support mounting bracket 13 and the lower wall panel mounting bracket 8 are fixed together to the sliding groove on the vehicle side wall, with the back of the lower lumbar support flush against the outer side of the lower wall panel. There are no gaps between the lumbar support and the upper and lower wall panels; they fit tightly, and the mounting points are concealed inside the lumbar support, with no exposed nails.
[0033] For details on wall panel installation, please refer to [link / reference]. Figure 5 After the lumbar support is installed, the installation interface between the upper wall panel and the vertical cover panel is the same as that of the lower wall panel. See details. Figure 7 The installation interface between the upper wall panel and the partition wall is the same as that of the lower wall panel; see details below. Figure 9 For details on the mounting interface between the upper wall panel and the vehicle body, please refer to [link / reference]. Figure 6 The upper part of the upper wall panel is mounted to the C-shaped groove on the side wall of the vehicle body via the top mounting bracket 2. See details of the upper wall panel and lumbar support mounting interface. Figure 8 The lower part of the upper wall panel is inserted into the insertion slot for fixation. The insertion slot needs to be equipped with shock-absorbing pads to ensure that the wall panel is firmly inserted and that no abnormal noise is generated during vehicle operation.
Claims
1. A mounting structure for the end sidewall of a type B subway car, characterized in that: The interior sidewalls include a vehicle body sidewall, an interior sidewall, and a lumbar support (11). The interior sidewall includes an upper wall panel (1), a top mounting seat (2), a side top panel baffle (3), an upper wall panel frame (6), a lower wall panel (7), a lower wall panel mounting seat (8), a support beam (9), and a lower wall panel frame (10). The upper wall panel (1) has an upper wall panel frame (6) on its inner side, and the lower wall panel has a lower wall panel frame (10) on its inner side. The upper wall panel has an upper wall panel mounting seat (2) and a side top panel baffle (3) for connecting with the vehicle body sidewall. The lower wall panel has a support beam (9) on its lower side. (9) The lower wall panel is installed on the side wall of the vehicle body using an industrial buckle. The upper side of the lower wall panel is provided with a lower wall panel mounting seat (8). The back of the lumbar support (11) is provided with an upper lumbar support mounting seat (12) and a lower lumbar support mounting seat (13) for fixing to the sliding groove of the side wall of the vehicle body. The upper side of the upper lumbar support mounting seat (12) is provided with an upward-facing L-shaped block. An insertion groove (15) for inserting the upper wall panel is formed between the L-shaped block and the back of the lumbar support. The lower lumbar support mounting seat (13) and the lower wall panel mounting seat (8) are fixed together on the sliding groove of the side wall of the vehicle body. The back of the lower side of the lumbar support is close to the outer side of the lower wall panel.
2. The mounting structure for the end sidewall of a type B subway car according to claim 1, characterized in that: It also includes a cover plate mounting base (4), the side of the inner wall is provided with a cover plate mounting base (4) for fixed connection with the cover plate, and the end of the contact position between the inner wall and the cover plate (14) is provided with a corner, the outer surface of the corner is in contact with the surface of the cover plate.
3. The mounting structure for the end sidewall of a type B subway car according to claim 1, characterized in that: It also includes Velcro (5), with a corner at the end of the contact position between the inner side wall and the partition wall. The outer surface of the corner contacts the surface of the partition wall, and the inner side of the corner is connected to the outer side of the L-shaped aluminum profile on the partition wall through Velcro (5).
4. The mounting structure for the end sidewall of a type B subway car according to claim 1, characterized in that: The insertion slot is equipped with a shock-absorbing pad.