Rail transit passenger room electric sliding door isolation device
The electric sliding door is raised by using a limit rod and a triangular block structure, which solves the wear problem, improves stability and sealing, and extends its service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-08
- Publication Date
- 2026-04-07
AI Technical Summary
The electric sliding doors in the passenger compartments of traditional rail transit vehicles suffer severe wear at the bottom due to their movement on the ground, affecting their isolation effect.
The sliding door uses a limit bar and triangular block structure to rise when moving, avoiding contact with the ground, and springs and silicone pads ensure the stability and sealing of the door.
It improves the stability and sealing of the sliding door, extends its service life, and avoids problems such as wear and tear and air ingress.
Smart Images

Figure CN224090199U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of rail transit systems, and in particular relates to an electric sliding door isolation device for rail transit passenger compartments. Background Technology
[0002] Currently, the sliding door isolation devices in the passenger compartments of rail transit vehicles mainly adopt mechanical drive, which usually uses a hinge structure or pulley drive method, and uses handles or buttons to control the opening and closing of the door;
[0003] However, when using traditional electric sliding door isolation devices, the electric door usually moves on the ground. After a long period of use, the bottom of the electric door will suffer severe wear. Severely worn electric door bottoms will be damaged and deformed, making the electric door difficult to move, thus seriously affecting the isolation effect of the electric sliding door isolation device. Utility Model Content
[0004] This utility model addresses the problem in existing technology where electric doors, which typically move on the ground, experience severe wear at their bottom edges after prolonged use. Severely worn bottom edges may break or deform, making the door difficult to move and significantly impacting the isolation effect of the electric sliding door isolation device. The following technical solution is proposed:
[0005] An electric sliding door isolation device for a rail transit passenger compartment includes: a sliding door with glass installed inside; a mounting base at the top of the sliding door; a limit block fixedly connected to the bottom of the mounting base; a limit rod slidably connected inside the limit block; a triangular block movably sleeved on the outer surface of the limit rod; connecting blocks fixedly connected to both ends of the triangular block; the connecting blocks fixedly connected to the top of the sliding door; mounting blocks fixedly connected to the top edges of both ends of the sliding door; a locking block slidably connected inside the mounting block; a roller fixedly connected to one end of the locking block; and the roller rotatably connected to the inside of the mounting base.
[0006] As a preferred embodiment of the above technical solution, two limiting rods are provided, and the two limiting rods are evenly distributed above the top edge of the movable door.
[0007] As a preferred embodiment of the above technical solution, the surface of the limiting block is provided with an inclined groove, and the surface of the triangular block and the interior of the inclined groove are in contact with each other.
[0008] As a preferred embodiment of the above technical solution, the mounting base has a sliding groove inside, and a positioning block is slidably connected inside the sliding groove, with the positioning block fixedly connected to the surface of the connecting block.
[0009] As a preferred embodiment of the above technical solution, positioning plates are fixedly connected to both ends of the top edge of the limiting block.
[0010] As a preferred embodiment of the above technical solution, a protrusion is fixedly connected to the bottom end of the connecting block, a connecting rod is fixedly connected to the bottom end of the protrusion, the connecting rod is slidably connected to the inside of the sliding door, a silicone pad is installed at the bottom end of the connecting rod, a spring is installed at the top end of the silicone pad, the spring is fixedly connected to the inside of the sliding door, and the spring is located on the outer surface of the connecting rod.
[0011] The beneficial effects of this utility model are as follows:
[0012] (1) When the limit rod moves, it drives the sliding door to rise, so that the sliding door will not directly contact the ground when it moves, thus avoiding the wear and tear problem caused by the sliding door moving on the ground, and making the sliding door more stable when it moves.
[0013] (2) By pressing the silicone pad against the ground with the spring, the sliding door can fit better against the ground after closing, avoiding the problem of air entering the sliding door after closing, thereby improving the sealing efficiency of the sliding door after closing. Attached Figure Description
[0014] Figure 1 The diagram shown is a structural schematic of an electric sliding door isolation device for a rail transit passenger compartment according to Embodiment 1;
[0015] Figure 2 The diagram shown is a structural schematic of the sliding door in Embodiment 1;
[0016] Figure 3 The diagram shown is a schematic diagram of the bottom structure of the sliding door in Embodiment 1;
[0017] Figure 4 The diagram shown is an exploded view of the sliding door in Embodiment 1;
[0018] Figure 5 The diagram shown is a schematic diagram of the limiting block in Embodiment 1.
[0019] In the diagram: 1. Sliding door; 2. Glass; 3. Mounting base; 4. Limiting block; 5. Limiting rod; 6. Connecting block; 7. Mounting block; 8. Locking block; 9. Roller; 10. Connecting rod; 11. Silicone pad; 12. Spring; 13. Triangular block. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.
[0021] Example 1
[0022] This utility model provides an electric sliding door isolation device for rail transit passenger compartments, such as... Figures 1 to 5As shown, it includes a sliding door 1, a door frame installed on the outer surface of the sliding door 1, glass 2 installed inside the sliding door 1, a mounting base 3 at the top of the sliding door 1, the mounting base 3 being fixedly connected to the inside of the door frame, a limit block 4 fixedly connected to the bottom of the mounting base 3, a limit rod 5 slidably connected inside the limit block 4, a triangular block 13 movably sleeved on the outer surface of the limit rod 5, connecting blocks 6 fixedly connected to both ends of the triangular block 13, the connecting blocks 6 being fixedly connected to the top of the sliding door 1, and mounting blocks 7 fixedly connected to the top edges of both ends of the sliding door 1, with locking blocks 8 slidably connected inside the mounting blocks 7. A roller 9 is fixedly connected to the end face, and the roller 9 is rotatably connected to the inside of the mounting base 3. The existing electric sliding door isolation device for rail transit passenger compartments also includes an isolation door controller, an electromagnet, a detection sensor, a locking tongue, and other structures. In use, the detection sensor detects the status of the sliding door 1 and then provides real-time feedback on the working status of the sliding door 1. When the sliding door 1 malfunctions, the operator operates the isolation door controller, which controls the electromagnet to be energized. After the electromagnet is energized, the internal locking tongue extends and cooperates with the electromagnet's ground stop pin to complete the locking action. All of the above are existing technologies and will not be elaborated further here.
[0023] like Figure 4 and Figure 5 As shown, there are two limit rods 5, which are evenly distributed above the top edge of the sliding door 1. The two triangular blocks 13 simultaneously drive the sliding door 1 to move and rise, making the sliding door 1 more stable when it moves and avoiding the problem of shaking when the sliding door 1 moves, thereby improving the stability of the sliding door 1 when it moves.
[0024] like Figure 4 and Figure 5 As shown, the surface of the limiting block 4 is provided with an inclined groove, and the surface of the triangular block 13 fits into the inside of the inclined groove. When the limiting rod 5 moves, it drives the triangular block 13 to move. The triangular block 13 first slides inside the inclined groove and is aligned and limited by the inclined groove, so that when the sliding door 1 moves, it will rise in height. At this time, because the height of the sliding door 1 rises, it will not directly contact the ground or the bottom of the door frame, thereby avoiding the problem of wear and tear between the sliding door 1 and the ground and improving the service life of the sliding door 1.
[0025] like Figure 4 and Figure 5 As shown, the mounting base 3 has a sliding groove inside, and a positioning block is slidably connected inside the sliding groove. The positioning block is fixedly connected to the surface of the connecting block 6. When the connecting block 6 moves inside the mounting base 3, it drives the positioning block to slide inside the sliding groove, and the sliding groove limits the movement of the connecting block 6, making the movement of the connecting block 6 more stable and avoiding the problem of the connecting block 6 shifting when it moves.
[0026] like Figure 4 and Figure 5As shown, positioning plates are fixedly connected to both ends of the top edge of the limiting block 4. When the two limiting rods 5 move inside the limiting block 4, the positioning plates at both ends limit the limiting rods 5, preventing the limiting rods 5 from moving to the outside of the limiting block 4 and causing the limiting rods 5 to fall out of the limiting block 4. This allows the limiting rods 5 to slide more smoothly inside the limiting block 4.
[0027] like Figures 3 to 5 As shown, a protrusion is fixedly connected to the bottom end of the connecting block 6, and a connecting rod 10 is fixedly connected to the bottom end of the protrusion. The connecting rod 10 is slidably connected inside the sliding door 1. A silicone pad 11 is installed at the bottom end of the connecting rod 10, and a spring 12 is installed at the top end of the silicone pad 11. The spring 12 is fixedly connected inside the sliding door 1 and is located on the outer surface of the connecting rod 10. The number of connecting rods 10 at the bottom end of a single connecting block 6 is set to two, and the two connecting rods 10 are connected by a sleeve. One of them is fixedly connected to the bottom end of the connecting block 6, and the other bottom end is equipped with a silicone pad 11. When the connecting block 6 drives the connecting rod 10 to rise, the spring 12 deforms. Spring 12 compresses silicone pad 11. Due to the length limitation of spring 12, silicone pad 11 will not directly contact the ground after rising. When sliding door 1 is closed, limit rod 5 moves triangular block 13 into the inclined groove, causing connecting block 6 to descend. The descent of connecting block 6 causes connecting rod 10 and silicone pad 11 to descend synchronously. When silicone pad 11 contacts the ground, silicone pad 11 will compress spring 12. At this time, spring 12 will reverse the compression of silicone pad 11, so that silicone pad 11 can fit tightly with the ground, avoiding the problem of air entering after sliding door 1 is closed, thereby improving the sealing efficiency of sliding door 1 after closing.
[0028] Working principle: When the device is in use, the operator controls the sliding door 1 to enter the door frame through the isolation door controller. The sliding door 1 drives the limit rod 5, connecting block 6, mounting block 7 and triangular block 13 to move synchronously. When the limit rod 5 moves, it slides inside the limit block 4, causing the triangular block 13 to rise along the inclined surface of the limit block 4. The triangular block 13 drives the connecting block 6, mounting block 7 and sliding door 1 to rise synchronously. At this time, the sliding door 1 cannot directly contact the ground after rising, making the movement of the sliding door 1 smoother. Then, through the cooperation between the electromagnet ground stop pin and the locking tongue, the locking step of the sliding door 1 is completed. When the limit rod 5 moves, it drives the sliding door 1 to rise, so that the sliding door 1 will not directly contact the ground when moving, avoiding the wear and tear problem caused by the sliding door 1 moving on the ground, thus making the movement of the sliding door 1 more stable.
[0029] When the connecting block 6 drives the connecting rod 10 to rise, the spring 12 deforms and compresses the silicone pad 11. Due to the length limitation of the spring 12, the silicone pad 11 will not directly contact the ground after rising. When the sliding door 1 is closed, the limit rod 5 drives the triangular block 13 to move into the inclined groove, causing the connecting block 6 to descend. The descent of the connecting block 6 causes the connecting rod 10 and the silicone pad 11 to descend synchronously. When the silicone pad 11 contacts the ground, it will compress the spring 12. At this time, the spring 12 will compress the silicone pad 11 in the opposite direction, so that the silicone pad 11 can fit tightly with the ground, avoiding the problem of air entering the sliding door 1 after it is closed, thereby improving the sealing efficiency of the sliding door 1 after it is closed.
[0030] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.
Claims
1. A motorized sliding door isolation device for a rail transit passenger compartment, characterized in that, include: A sliding door (1) has a glass (2) installed inside. A mounting base (3) is provided at the top of the sliding door (1). A limit block (4) is fixedly connected to the bottom of the mounting base (3). A limit rod (5) is slidably connected inside the limit block (4). A triangular block (13) is movably sleeved on the outer surface of the limit rod (5). A connecting block (6) is fixedly connected to both ends of the triangular block (13). The connecting block (6) is fixedly connected to the top of the sliding door (1). Mounting blocks (7) are fixedly connected to the top edges of both ends of the sliding door (1). A locking block (8) is slidably connected inside the mounting block (7). A roller (9) is fixedly connected to one end of the locking block (8). The roller (9) is rotatably connected inside the mounting base (3).
2. The electric sliding door isolation device for rail transit passenger compartments according to claim 1, characterized in that, The limiting rod (5) is set to two, and the two limiting rods (5) are evenly distributed above the top edge of the moving door (1).
3. The electric sliding door isolation device for rail transit passenger compartments according to claim 1, characterized in that, The surface of the limiting block (4) is provided with an inclined groove, and the surface of the triangular block (13) is in contact with the inside of the inclined groove.
4. The electric sliding door isolation device for rail transit passenger compartments according to claim 1, characterized in that, The mounting base (3) has a sliding groove inside, and a positioning block is slidably connected inside the sliding groove. The positioning block is fixedly connected to the surface of the connecting block (6).
5. The electric sliding door isolation device for rail transit passenger compartments according to claim 1, characterized in that, Positioning plates are fixedly connected to both ends of the top edge of the limiting block (4).
6. The electric sliding door isolation device for a rail transit passenger compartment according to claim 1, characterized in that, The bottom end of the connecting block (6) is fixedly connected to a protrusion, and the bottom end of the protrusion is fixedly connected to a connecting rod (10). The connecting rod (10) is slidably connected to the inside of the sliding door (1). A silicone pad (11) is installed at the bottom end of the connecting rod (10), and a spring (12) is installed at the top end of the silicone pad (11). The spring (12) is fixedly connected to the inside of the sliding door (1), and the spring (12) is located on the outer surface of the connecting rod (10).