A door panel grille mounting structure for a trainset toilet
By introducing a plug-in and installation mechanism into the toilet door grille of the high-speed train, the problem of non-removability caused by welding fixation was solved, enabling convenient disassembly and cleaning, improving maintenance efficiency and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BFG INT CHINA CO LTD
- Filing Date
- 2025-08-25
- Publication Date
- 2026-06-05
AI Technical Summary
The existing method of welding and fixing the toilet door grille to the door of high-speed trains makes it impossible to separate, requiring destructive disassembly for maintenance, which is cumbersome and increases costs.
The system employs a plug-in and installation mechanism, including a rotating column, sliding rod, tilting block, moving block, and limiting rod. The door panel grille is detachably connected to the vehicle door via a threaded rod and a drive handle. Combined with an elastic block and plug-in mechanism, the grille strips can be easily removed.
It enables a detachable connection between the door panel grille and the door, simplifying the maintenance process, reducing maintenance costs, and improving cleaning convenience.
Smart Images

Figure CN224323987U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of door panel grille installation technology, specifically a door panel grille installation structure for a high-speed train toilet. Background Technology
[0002] A bathroom door panel grille is a device that creates ventilation channels by setting openings in the door panel. This design is commonly found in high-speed train bathrooms and is also suitable for bathroom doors in ordinary homes or public places. As a key component for both ventilation and decoration, the installation method of the bathroom door panel grille directly affects assembly efficiency, ease of maintenance, and reliability.
[0003] Existing door panel grilles are mostly installed to the doors by welding. Although welding can ensure structural strength, it makes the door panel grille and the door an inseparable whole. Later maintenance requires disassembly by cutting and other destructive means, which is not only cumbersome and time-consuming, but also easy to damage the door panel itself and increase replacement costs. To solve these problems, we provide a door panel grille installation structure for high-speed train toilets. Utility Model Content
[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a grille installation structure for the toilet door panel of a high-speed train.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a toilet door panel grille installation structure for high-speed trains, including a door, a grille frame inserted inside the door, and two fixing blocks fixedly connected to the bottom of the grille frame, an installation mechanism inside the door, and a limit rod fixedly connected to one end of the installation mechanism, multiple grille strips respectively provided on the inner side of the grille frame, the grille strips and the grille frame together forming the door panel grille, and the bottom end of the grille strips inserted into the inner bottom of the grille frame, multiple mounting seats fixedly connected to the inner top of the grille frame, a set of left-right symmetrical insertion mechanisms provided on the outer side of the mounting seats, and a plug rod tightly attached to one end of the insertion mechanism, an elastic block fixedly connected to one end of the plug rod, and the bottom end of the elastic block fixedly connected to the top end of the grille strip.
[0006] The aforementioned installation mechanism includes a rotating column, a sliding rod, an inclined block, and a moving block. One end of the rotating column is fixedly connected to one end of the sliding rod, and an inclined groove is provided on the outer wall of the sliding rod. The top end of the inclined block is slidably connected to the inside of the inclined groove, and the bottom end of the inclined block is fixedly connected to the top end of the moving block.
[0007] As described above, one end of the movable block is fixedly connected to one end of the limiting rod, and the other end of the limiting rod is inserted into the interior of the fixed block. The interior of the car door is threaded with a threaded rod.
[0008] As described above, the end of the rotating column away from the slide rod is rotatably connected to one end of the threaded rod, and both ends of the moving block are slidably connected to the inside of the car door.
[0009] The aforementioned insertion mechanism includes a sleeve, a spring, a drive rod, and a guide block. The outer wall of the drive rod is fixedly connected to one end of each of the two guide blocks, and the other end of the guide block is slidably connected to the inner wall of the sleeve. One side of the guide block is fixedly connected to one end of the spring.
[0010] As described above, one end of the drive rod passes through the sleeve and is movably connected inside the mounting base, and one end of the drive rod is in close contact with one end of the insertion rod.
[0011] As described above, one end of the sleeve is fixedly connected to the outer side of the mounting base, and the end of the spring away from the guide block is fixedly connected to the inner bottom of the sleeve.
[0012] Compared with existing technologies, this new type of toilet door panel grille installation structure for high-speed trains has the following advantages:
[0013] I. This utility model, through its installation mechanism, drives the threaded rod to rotate via the drive handle, which in turn drives the sliding rod to move inward toward the inside of the car door. The inclined block is limited by the inclined groove, which drives the moving block to move toward the fixed block 3, so that the limiting rod is embedded in the fixed block to complete the locking. This makes the connection between the door panel grille and the car door detachable, which facilitates the replacement of parts during later maintenance and simplifies the assembly process.
[0014] Second, this utility model, through its plug-in mechanism, allows for easy removal of grille bars. When the grille bars need to be removed, pressing the drive rod causes it to move along the guide block trajectory within the sleeve, while simultaneously compressing the spring. The drive rod then pushes the plug rod, and the elastic block deforms under pressure, causing the plug rod to detach from the mounting base. This effectively avoids the problem of inconvenient door panel grille cleaning caused by the difficulty in disassembling rigid fixed structures, thus improving the cleaning effect.
[0015] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;
[0017] Figure 2 This is an assembly drawing of the grille frame and grille strips of this utility model;
[0018] Figure 3 This is an exploded view of the installation mechanism of this utility model;
[0019] Figure 4 This is an assembly drawing of the grille strip and mounting base of this utility model;
[0020] Figure 5 This is a partial structural schematic diagram of the present invention;
[0021] Figure 6 For the present utility model Figure 5 Enlarged 3D structural diagram at point A.
[0022] In the diagram: 1. Door; 2. Grille frame; 3. Fixing block; 4. Mounting mechanism; 401. Rotating column; 402. Sliding rod; 403. Inclined block; 404. Moving block; 5. Limiting rod; 6. Grille strip; 7. Door panel grille; 8. Mounting seat; 9. Plug-in mechanism; 901. Sleeve; 902. Spring; 903. Drive rod; 904. Guide block; 10. Insert rod; 11. Elastic block; 12. Inclined groove; 13. Threaded rod. Detailed Implementation
[0023] 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.
[0024] like Figure 1-6 As shown, this utility model provides a technical solution: a toilet door panel grille installation structure for a high-speed train, including a door 1, a grille frame 2 inserted inside the door 1, and two fixing blocks 3 fixedly connected to the bottom of the grille frame 2 respectively. An installation mechanism 4 is provided inside the door 1, and a limit rod 5 is fixedly connected to one end of the installation mechanism 4. Multiple grille strips 6 are provided on the inner side of the grille frame 2. The grille strips 6 and the grille frame 2 together constitute the door panel grille 7. The bottom end of the grille strip 6 is inserted into the inner bottom of the grille frame 2. Multiple mounting seats 8 are fixedly connected to the inner top of the grille frame 2. A set of left-right symmetrical insertion mechanisms 9 are provided on the outer side of the mounting seats 8. One end of the insertion mechanism 9 is closely attached to the insertion rod 10. One end of the insertion rod 10 is fixedly connected to an elastic block 11, and the bottom end of the elastic block 11 is fixedly connected to the top end of the grille strip 6.
[0025] During installation, first insert the top of the door panel grille 7 into the top of the inner door 1, then align its bottom with the bottom of the inner door 1. Subsequently, rotate the threaded rod 13 via the drive handle, and the installation mechanism 4 drives the limiting rod 5 to engage with the fixing block 3 to complete the locking. This makes the connection between the door panel grille 7 and the door 1 detachable, facilitating component replacement during later maintenance and simplifying the assembly process. When it is necessary to remove the grille strip 6, press the insertion mechanism 9 to push the insertion rod 10. At this time, the elastic block 11 deforms under pressure, causing the insertion rod 10 to disengage from the mounting seat 8. This effectively avoids the problem of inconvenient cleaning of the door panel grille 7 caused by the inconvenience of disassembling the rigid fixed structure, and improves the cleaning effect.
[0026] The elastic block 11 is made of elastic material and can be deformed by compression, thereby allowing the insertion rod 10 to smoothly disengage from the mounting base 8.
[0027] like Figure 1-3 As shown, the installation mechanism 4 includes a rotating column 401, a sliding rod 402, an inclined block 403, and a moving block 404. One end of the rotating column 401 is fixedly connected to one end of the sliding rod 402, and the outer wall of the sliding rod 402 is provided with an inclined groove 12. The top end of the inclined block 403 is slidably connected to the inside of the inclined groove 12, and the bottom end of the inclined block 403 is fixedly connected to the top end of the moving block 404. One end of the moving block 404 is fixedly connected to one end of the limiting rod 5, and the other end of the limiting rod 5 is inserted into the inside of the fixed block 3. The inside of the car door 1 is threadedly connected to a threaded rod 13. The end of the rotating column 401 away from the sliding rod 402 is rotatably connected to one end of the threaded rod 13. Both ends of the moving block 404 are slidably connected to the inside of the car door 1.
[0028] By rotating the threaded rod 13 through the drive handle, the sliding rod 402 is driven to move inward to the inside of the door 1 via the rotating column 401. The tilting block 403 is limited by the tilting groove 12, which drives the moving block 404 to move towards the fixed block 3, so that the limiting rod 5 is embedded in the fixed block 3 to complete the locking. This makes the connection between the door panel grille 7 and the door 1 detachable, which facilitates the replacement of parts during later maintenance and simplifies the assembly process.
[0029] The drive handle is located at the end of the threaded rod 13 away from the rotating column 401 and on the outside of the door 1, providing driving force for the rotation of the threaded rod 13 and making it easy for the user to rotate the threaded rod 13 smoothly.
[0030] like Figure 1 , Figure 2 , Figure 5 and Figure 6As shown, the insertion mechanism 9 includes a sleeve 901, a spring 902, a drive rod 903, and a guide block 904. The outer wall of the drive rod 903 is fixedly connected to one end of each of the two guide blocks 904, and the other end of the guide block 904 is slidably connected to the inner wall of the sleeve 901. One side of the guide block 904 is fixedly connected to one end of the spring 902. One end of the drive rod 903 passes through the sleeve 901 and is movably connected to the inside of the mounting base 8. One end of the drive rod 903 is in close contact with one end of the insertion rod 10. One end of the sleeve 901 is fixedly connected to the outer side of the mounting base 8. The end of the spring 902 away from the guide block 904 is fixedly connected to the inner bottom of the sleeve 901.
[0031] When it is necessary to remove the grille bar 6, press the drive rod 903 to move it along the trajectory of the guide block 904 within the sleeve 901, and at the same time compress the spring 902. The drive rod 903 pushes the insert rod 10 in sync. The elastic block 11 deforms under pressure, causing the insert rod 10 to detach from the mounting base 8. This effectively avoids the problem of inconvenient cleaning of the door panel grille 7 caused by the inconvenience of disassembling the rigid fixed structure, and improves the cleaning effect.
[0032] Working principle: During installation, first insert the top of the door panel grille 7 into the top of the inner door 1, and then make its bottom fit against the bottom of the inner door 1. Then, rotate the threaded rod 13 through the drive handle, and drive the sliding rod 402 to move inward to the inner side of the door 1 through the rotating column 401. The tilting block 403 is limited by the tilting groove 12 and drives the moving block 404 to move towards the fixed block 3, so that the limiting rod 5 is embedded in the fixed block 3 to complete the locking, making the connection between the door panel grille 7 and the door 1 detachable. When it is necessary to remove the grille strip 6, press the drive rod 903 to make it move in the sleeve 901 along the trajectory of the guide block 904, and at the same time compress the spring 902. The drive rod 903 pushes the insertion rod 10 in sync. The elastic block 11 deforms due to pressure, causing the insertion rod 10 to disengage from the mounting seat 8.
[0033] 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 grille installation structure for a toilet door panel of a high-speed train, comprising a door (1), characterized in that: A grille frame (2) is inserted inside the door (1), and two fixing blocks (3) are fixedly connected to the bottom of the grille frame (2). An installation mechanism (4) is provided inside the door (1), and a limit rod (5) is fixedly connected to one end of the installation mechanism (4). Multiple grille strips (6) are provided on the inner side of the grille frame (2). The grille strips (6) and the grille frame (2) together form a door panel grille (7). The bottom end of the grille strip (6) is inserted into the inner bottom of the grille frame (2). Multiple mounting seats (8) are fixedly connected to the inner top of the grille frame (2). A set of left-right symmetrical insertion mechanisms (9) is provided on the outer side of the mounting seats (8). One end of the insertion mechanism (9) is closely attached to the insertion rod (10). One end of the insertion rod (10) is fixedly connected to an elastic block (11), and the bottom end of the elastic block (11) is fixedly connected to the top end of the grille strip (6).
2. The installation structure for the door panel grille of a high-speed train toilet according to claim 1, characterized in that: The installation mechanism (4) includes a rotating column (401), a sliding rod (402), an inclined block (403), and a moving block (404). One end of the rotating column (401) is fixedly connected to one end of the sliding rod (402), and the outer wall of the sliding rod (402) is provided with an inclined groove (12). The top end of the inclined block (403) is slidably connected to the inside of the inclined groove (12), and the bottom end of the inclined block (403) is fixedly connected to the top end of the moving block (404).
3. The installation structure for the door panel grille of a high-speed train toilet according to claim 2, characterized in that: One end of the movable block (404) is fixedly connected to one end of the limiting rod (5), and the other end of the limiting rod (5) is inserted into the interior of the fixed block (3). The interior of the car door (1) is threadedly connected to a threaded rod (13).
4. The installation structure for the door panel grille of a high-speed train toilet according to claim 3, characterized in that: The end of the rotating column (401) away from the slide bar (402) is rotatably connected to one end of the threaded rod (13), and both ends of the moving block (404) are slidably connected to the inside of the car door (1).
5. The installation structure for the door panel grille of a high-speed train toilet according to claim 1, characterized in that: The insertion mechanism (9) includes a sleeve (901), a spring (902), a drive rod (903), and a guide block (904). The outer wall of the drive rod (903) is fixedly connected to one end of each of the two guide blocks (904), and the other end of the guide block (904) is slidably connected to the inner wall of the sleeve (901). One side of the guide block (904) is fixedly connected to one end of the spring (902).
6. The installation structure for the door panel grille of a high-speed train toilet according to claim 5, characterized in that: One end of the drive rod (903) passes through the sleeve (901) and is movably connected to the inside of the mounting base (8), and one end of the drive rod (903) is in close contact with one end of the insertion rod (10).
7. The installation structure for the door panel grille of a high-speed train toilet according to claim 6, characterized in that: One end of the sleeve (901) is fixedly connected to the outside of the mounting base (8), and the end of the spring (902) away from the guide block (904) is fixedly connected to the inner bottom of the sleeve (901).