Top plate inspection door ventilation structure of motor train unit toilet
By designing a ventilation structure for the inspection door on the roof of the train's toilet, and utilizing the coordination of adjusting gears and sealing plates, the problem of targeted switching in existing technologies was solved, achieving air circulation and odor isolation, and improving passenger comfort.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-21
- Publication Date
- 2026-03-06
AI Technical Summary
The ventilation structure of the inspection door on the ceiling of the existing high-speed train toilet cannot be switched according to the specific conditions inside the carriage, resulting in odor leakage and affecting the comfort of the passengers.
A ventilation structure for the inspection door of the toilet roof of a high-speed train was designed, including an inspection chamber, a fixing block, a roof assembly, a door assembly, and a ventilation system. By adjusting the gears and sealing plates, air circulation and odor isolation are achieved, and the ventilation fan blades are driven by a ventilation motor to exchange air.
It achieves the required air circulation and odor isolation, improves riding comfort, prevents odor leakage, and provides a convenient user experience.
Smart Images

Figure CN223972546U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of components and equipment for high-speed train toilets, specifically a ventilation structure for the inspection door on the roof panel of a high-speed train toilet. Background Technology
[0002] To facilitate the operation of the air circulation system within the rail vehicle carriages and prevent odors generated during the use of the toilet modules in high-speed trains from leaking out and affecting passenger comfort, a duct interface for the exhaust gas device is typically installed at the upper part of the toilet ceiling. A corresponding ventilation grille structure is installed below the toilet ceiling to effectively prevent odors generated during toilet use from spreading into the carriage. For ease of maintenance of the duct interface and other functional components on the back of the ceiling, an inspection door is required near the ventilation grille.
[0003] Currently, most high-speed train toilet ceiling inspection door ventilation structures cannot be switched according to the specific conditions inside the carriage during use. This results in the inability to isolate the leaking space when odors overflow, causing inconvenience to users. Utility Model Content
[0004] The purpose of this utility model is to provide a ventilation structure for the inspection door of the roof panel of a high-speed train toilet, so as to solve the problem mentioned in the background art that it cannot be switched according to the specific situation inside the carriage. To achieve the above objective, this utility model provides the following technical solution: a ventilation structure for the inspection door of the roof panel of a high-speed train toilet, including an inspection chamber, a fixing block is provided on the inner top wall of the inspection chamber, the outer wall of the fixing block is rotatably connected to the inner wall of the roof panel assembly, the outer wall of the roof panel assembly is rotatably connected to the inner wall of the inspection chamber, and a door panel assembly is slidably connected to the inner wall of the inspection chamber.
[0005] Preferably, the inner wall of the inspection chamber is provided with a sliding groove for the door panel assembly to slide, and the inner top wall of the inspection chamber is provided with a rotating groove that is rotatably connected to the top panel assembly.
[0006] Preferably, the top plate assembly includes a rotating block, a rotating plate, an illumination port, and a locking block. The inner wall of the rotating block is rotatably connected to the outer wall of the fixed block, and the bottom of the rotating block is fixedly connected to the top of the rotating plate. The outer wall of the rotating plate is rotatably connected to the inner wall of the rotating groove, and an illumination port is provided at the center of the rotating plate. Ventilation ports are provided on both sides of the rotating plate near the illumination port, and the inner wall of the rotating plate near the front is rotatably connected to the outer wall of the locking block. The inner wall of the locking block has a hexagonal groove, and the bottom of the locking block is movably abutting against the inner wall of the inspection chamber.
[0007] Preferably, the top of the rotating plate is also provided with a ventilation pipe, and one end of the ventilation pipe is fixedly connected to the top of the ventilation port. The inner wall of the ventilation pipe is fixedly connected to the outer wall of the mounting block, and a ventilation motor is fixedly installed on the inner wall of the mounting block. The outer wall of the output shaft of the ventilation motor is fixedly connected to the inner wall of the ventilation fan blade.
[0008] Preferably, the door panel assembly includes a sliding door, a rotating rod, a sealing plate, an adjusting gear, an adjusting tooth block, and an adjusting rod. The inner wall of the sliding door is slidably connected to the inner wall of the sliding groove, and the inner wall of the sliding door has an adjusting opening. The inner wall of the adjusting opening is rotatably connected to the outer wall of the rotating rod, and the outer wall of the rotating rod is provided with a sealing plate. The outer wall of the sealing plate is rotatably connected to the inner wall of the adjusting opening, and the outer wall of the bottom end of the rotating rod is fixedly connected to the inner wall of the adjusting gear. The outer wall of the adjusting gear is meshed with the outer wall of the adjusting tooth block, and one side of the adjusting tooth block is fixedly connected to the outer wall of the adjusting rod.
[0009] Preferably, there are eight rotating rods, and each of the eight rotating rods has a transmission wheel at its top. The outer walls of the eight transmission wheels are connected by a transmission belt.
[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0011] In this invention, by moving the adjusting rod, the adjusting teeth drive the adjusting gear to rotate under the meshing force. The adjusting gear drives the sealing plate to rotate inside the sliding door through the rotating rod. After the sealing plates abut against each other, they completely block the adjusting opening, preventing odors from overflowing through the sliding door and bringing convenience to people's use.
[0012] In this invention, when the ventilation motor is started, the ventilation fan blades rotate. The ventilation fan blades rotate inside the ventilation pipe, and the ventilation fan blades draw air from the inspection chamber into the ventilation pipe. At the same time, air inside the vehicle also enters the ventilation pipe through the adjustment port of the sliding door, thus preventing the spread of odors. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0014] Figure 2 This is a schematic diagram of the top plate assembly structure of this utility model;
[0015] Figure 3 This is a cross-sectional view of the door panel assembly structure of this utility model;
[0016] Figure 4 This is a schematic diagram of the door panel assembly structure of this utility model.
[0017] In the diagram: 1. Inspection chamber; 2. Fixing block; 3. Top plate assembly; 301. Rotating block; 302. Rotating plate; 303. Lighting port; 304. Locking block; 305. Ventilation pipe; 306. Mounting block; 307. Ventilation motor; 308. Ventilation fan blade; 4. Door panel assembly; 401. Sliding door; 402. Rotating rod; 403. Sealing plate; 404. Adjusting gear; 405. Adjusting gear block; 406. Adjusting rod; 407. Transmission wheel; 408. Transmission belt. Detailed Implementation
[0018] 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 skilled in the art without creative effort are within the protection scope of the present utility model.
[0019] Please see Figures 1 to 4 This utility model provides a technical solution: a ventilation structure for the inspection door of the roof panel of a high-speed train toilet, including an inspection chamber 1, a fixing block 2 is provided on the inner top wall of the inspection chamber 1, the outer wall of the fixing block 2 is rotatably connected to the inner wall of the roof panel assembly 3, the outer wall of the roof panel assembly 3 is rotatably connected to the inner wall of the inspection chamber 1, and a door panel assembly 4 is slidably connected to the inner wall of the inspection chamber 1.
[0020] In this embodiment, as Figures 1 to 4 As shown, the inner wall of the inspection chamber 1 is provided with a sliding groove for the door panel assembly 4 to slide, and the inner top wall of the inspection chamber 1 is provided with a rotating groove that is rotatably connected to the top plate assembly 3.
[0021] In this embodiment, as Figures 1 to 4 As shown, the top plate assembly 3 includes a rotating block 301, a rotating plate 302, an illumination port 303, and a locking block 304. The inner wall of the rotating block 301 is rotatably connected to the outer wall of the fixed block 2, and the bottom of the rotating block 301 is fixedly connected to the top of the rotating plate 302. The outer wall of the rotating plate 302 is rotatably connected to the inner wall of the rotating groove. An illumination port 303 is provided at the center of the rotating plate 302, and ventilation ports are provided on both sides of the rotating plate 302 near the illumination port 303. Furthermore, the inner wall of the rotating plate 302 near the front is rotatably connected to the outer wall of the locking block 304. The inner wall of the locking block 304 is provided with a hexagonal groove, and the bottom of the locking block 304 is movably abutting against the inner wall of the inspection chamber 1. After inserting a hexagonal wrench into the locking block 304, the locking block 304 can be rotated to separate the locking block 304 from the inspection chamber 1. At this time, the rotating block 301 can rotate on the outer wall of the fixed block 2, causing the rotating plate 302 to separate from the rotating groove.
[0022] In this embodiment, as Figures 1 to 4As shown, the top of the rotating plate 302 is also provided with an air exchange pipe 305, and one end of the air exchange pipe 305 is fixedly connected to the top of the air exchange port. The inner wall of the air exchange pipe 305 is fixedly connected to the outer wall of the mounting block 306, and the inner wall of the mounting block 306 is fixedly installed with an air exchange motor 307. The outer wall of the output shaft of the air exchange motor 307 is fixedly connected to the inner wall of the air exchange fan blade 308.
[0023] In this embodiment, as Figures 1 to 4 As shown, the door panel assembly 4 includes a sliding door 401, a rotating rod 402, a sealing plate 403, an adjusting gear 404, an adjusting tooth block 405, and an adjusting rod 406. The inner wall of the sliding door 401 is slidably connected to the inner wall of the sliding groove, and the inner wall of the sliding door 401 is provided with an adjusting port. The inner wall of the adjusting port is rotatably connected to the outer wall of the rotating rod 402. The outer wall of the rotating rod 402 is provided with a sealing plate 403. The outer wall of the sealing plate 403 is rotatably connected to the inner wall of the adjusting port. The outer wall of the bottom end of the rotating rod 402 is fixedly connected to the inner wall of the adjusting gear 404. The outer wall of the adjusting gear 404 is meshed with the outer wall of the adjusting tooth block 405. One side of the adjusting tooth block 405 is fixedly connected to the outer wall of the adjusting rod 406.
[0024] In this embodiment, as Figures 1 to 4 As shown, there are eight rotating rods 402, and each of the eight rotating rods 402 has a transmission wheel 407 at its top. The outer walls of the eight transmission wheels 407 are connected by a transmission belt 408.
[0025] The usage and advantages of this utility model: The working process of this ventilation structure for the inspection door on the roof of a high-speed train toilet is as follows:
[0026] like Figures 1 to 4 As shown, by moving the adjusting rod 406, the adjusting rod 406 drives the adjusting tooth block 405 to slide inside the sliding door 401. Under the meshing force, it drives the adjusting gear 404 to rotate. The adjusting gear 404 drives the rotating rod 402 to rotate. The rotating rod 402 drives the sealing plate 403 to rotate inside the sliding door 401, so that the space inside the inspection room 1 is connected to the space inside the carriage.
[0027] Start the ventilation motor 307, which drives the ventilation fan blade 308 to rotate. The ventilation fan blade 308 rotates inside the ventilation pipe 305, and the ventilation fan blade 308 drives the air in the inspection chamber 1 to rush into the ventilation pipe 305. At this time, the air in the carriage will also enter the ventilation pipe 305 through the adjustment port of the sliding door 401 to prevent the spread of odors.
[0028] When an odor is emitted, by moving the adjusting rod 406, the adjusting gear 405 drives the adjusting gear 404 to rotate under the meshing force. The adjusting gear 404 drives the sealing plate 403 to rotate inside the sliding door 401 through the rotating rod 402. After the sealing plates 403 abut against each other, they completely block the adjustment port, preventing the odor from overflowing through the sliding door 401 and bringing convenience to people's use.
[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A ventilation structure of a motor train set toilet ceiling inspection door, comprising an inspection chamber (1), characterized in that: The inner top wall of the examination room (1) is provided with a fixed block (2), the outer wall of the fixed block (2) is rotationally connected with the inner wall of a top plate assembly (3), the outer wall of the top plate assembly (3) is rotationally connected with the inner wall of the examination room (1), and the inner wall of the examination room (1) is slidably connected with a door plate assembly (4).
2. The ventilation structure of the inspection door of the toilet roof of a motor train unit according to claim 1, characterized in that: The inner wall of the examination room (1) is provided with a sliding groove for the sliding of the door plate assembly (4), and the inner top wall of the examination room (1) is provided with a rotating groove rotationally connected with the top plate assembly (3).
3. The ventilation structure of the inspection door of the toilet roof of a motor train unit according to claim 2, characterized in that: The top plate assembly (3) comprises a rotating block (301), a rotating plate (302), an illumination opening (303) and a locking block (304), the inner wall of the rotating block (301) is rotationally connected with the outer wall of the fixed block (2), the bottom of the rotating block (301) is fixedly connected with the top of the rotating plate (302), the outer wall of the rotating plate (302) is rotationally connected with the inner wall of the rotating groove, a illumination opening (303) is formed in the center of the rotating plate (302), air vents are formed in the two sides of the rotating plate (302) close to the illumination opening (303), the inner wall of the rotating plate (302) close to the front face is rotationally connected with the outer wall of the locking block (304), a hexagonal groove is formed in the inner wall of the locking block (304), and the bottom of the locking block (304) is movably abutted against the inner wall of the examination room (1).
4. The ventilation structure of the inspection door of the toilet roof of a motor train unit according to claim 3, characterized in that: The top of the rotating plate (302) is further provided with an air pipe (305), one end of the air pipe (305) is fixedly connected with the top of the air vent, the inner wall of the air pipe (305) is fixedly connected with the outer wall of a mounting block (306), a ventilation motor (307) is fixedly installed on the inner wall of the mounting block (306), and the output shaft of the ventilation motor (307) is fixedly connected with the inner wall of a ventilation fan blade (308).
5. The ventilation structure of the inspection door of the toilet roof of a motor train unit according to claim 2, characterized in that: The door plate assembly (4) comprises a sliding door (401), a rotating rod (402), a sealing plate (403), an adjusting gear (404), an adjusting tooth block (405) and an adjusting rod (406), the inner wall of the sliding door (401) is slidably connected with the inner wall of the sliding groove, an adjusting opening is formed in the inner wall of the sliding door (401), the inner wall of the adjusting opening is rotationally connected with the outer wall of the rotating rod (402), the outer wall of the rotating rod (402) is provided with the sealing plate (403), the outer wall of the sealing plate (403) is rotationally connected with the inner wall of the adjusting opening, the outer wall of the bottom end of the rotating rod (402) is fixedly connected with the inner wall of the adjusting gear (404), the outer wall of the adjusting gear (404) is meshingly connected with the outer wall of the adjusting tooth block (405), and one side of the adjusting tooth block (405) is fixedly connected with the outer wall of the adjusting rod (406).
6. The ventilation structure of the inspection door of the toilet roof of a motor train unit according to claim 5, characterized in that: The number of the rotating rods (402) is eight, and the top end of each of the eight rotating rods (402) is provided with a transmission wheel (407), and the outer walls of the eight transmission wheels (407) are meshingly and transmissionally connected through a transmission belt (408).