Passenger train door lock

Abstract

The passenger train door lock comprises a box cover and a sealing plate fixedly connected to the back side of the box cover, a lower unlocking structure is arranged at the lower end of the box cover, an upper unlocking structure is arranged at the upper end of the box cover, the lower unlocking structure is in linkage with a lifting display assembly used for displaying opening and closing states, a window is formed in the outer side of the box cover, and the window is in linkage with the lifting display assembly. The lifting display assembly is arranged close to the window; the lower unlocking structure and the unlocking key are separately inserted, and the upper unlocking structure is connected with the door handle. The passenger train door lock provided by the utility model can judge whether the train door is completely opened or closed, so that the working efficiency and the passenger service quality are improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of railway vehicle equipment, specifically relating to a railway passenger car door lock. Background Technology

[0002] Railway passenger cars consist of multiple carriages. For the convenience of passengers getting on and off, as well as for safety and air cleanliness, each carriage has a door at the rear. However, due to the nature of their work, train attendants frequently open and close these doors. Sometimes, in their haste, attendants may forget to lock the doors, potentially causing passengers to fall from the train and suffer injuries or fatalities. Current technology makes it difficult to determine whether a door is fully closed or open. For example, if a door is not fully closed, it may automatically reopen after the attendant has passed by; conversely, if a door is not fully open, the attendant may struggle to open it by turning the handle, reducing work efficiency.

[0003] Therefore, this solution proposes a railway passenger car door lock to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this utility model is to provide a railway passenger car door lock that solves the technical problem of how to determine whether the door is fully open or closed, thereby improving work efficiency and passenger service quality, and also helping to determine whether inspection and maintenance are needed.

[0005] A railway passenger car door lock includes a cover and a closed plate fixedly connected to the back side of the cover. The lower end of the cover is provided with a lower unlocking structure and the upper end is provided with an upper unlocking structure. The lower unlocking structure is linked with a lifting display component for displaying the open and closed status. A window is provided on the outer side of the cover, and the lifting display component is located close to the window.

[0006] The lower unlocking structure is separately inserted into the unlocking key, and the upper unlocking structure is connected to the door handle.

[0007] The lower unlocking structure includes an unlocking seat rotatably connected to the lower end of the cover, and a lower key rod with one end fixedly connected to the inner end of the unlocking seat. The unlocking seat is provided with a keyhole, which is separately connected to the unlocking key. The other end of the lower key rod is connected to the door lock.

[0008] The lifting display assembly includes a rotating rod fixedly connected to the outside of the unlocking seat at one end, a stop post fixed to the inside of the box cover, a limiting frame fixed to the inside of the box cover, and a lifting plate that slides up and down inside the limiting frame. The other end of the rotating rod is in separate contact with the outside of the stop post and also in separate contact with the bottom of the limiting frame. A display mark is provided on the lifting plate, and the display mark moves up and down to the window position.

[0009] The display identifier is a vertically arranged font for "closed" and "open".

[0010] The upper unlocking structure includes a rotating seat rotatably connected to the upper end of the box cover, an upper key bar with one end fixedly connected to the inner end of the rotating seat, the outer end of the rotating seat being connected to the door handle, and the other end of the upper key bar being connected to the door lock.

[0011] The outer end of the limiting frame is enclosed by a protective plate.

[0012] The upper and lower ends of the box cover are respectively fixed with an upper mounting post and a lower mounting post, and the upper mounting post and the lower mounting post are respectively fixedly connected to the sealing plate by screws.

[0013] The upper and lower ends of the box cover are respectively fixed with an upper through hole and a lower through hole, and the upper through hole and the lower through hole are respectively fixedly connected to the sealing plate by bolts.

[0014] The positive effects of this utility model are as follows:

[0015] When the attendant turns the unlocking key and uses the lower key lever to open the door lock, the outer end of the lever lifts the lifting plate, thus displaying the "open" status. When closing the door lock, the lifting plate slides down under gravity, thus displaying the "closed" status. This is convenient and quick, allowing for rapid and accurate judgment of whether the door is fully open or closed, thereby improving work efficiency and passenger service quality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the external structure of the car door lock in this utility model. Figure 1 .

[0017] Figure 2 This is a schematic diagram of the external structure of the car door lock in this utility model. Figure 2 .

[0018] Figure 3 This is a schematic diagram of the internal structure of the car door lock in this utility model. Figure 1 .

[0019] Figure 4 This is a schematic diagram of the internal structure of the car door lock in this utility model. Figure 2 .

[0020] Figure 5 This is a schematic diagram of the installation structure of the lifting display component in this utility model.

[0021] The attached diagram is labeled as follows: 1. Box cover; 2. Lower through hole; 21. Lock seat; 3. Window; 4. Enclosure plate; 5. Lower key bar; 51. Stop post; 52. Rotating rod; 53. Lifting plate; 6. Door handle; 7. Upper key bar; 8. Upper through hole; 9. Lower mounting post; 10. Upper mounting post; 11. Protective plate; 12. Limiting frame. Detailed Implementation

[0022] To more clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0023] See Figures 1-5 A railway passenger car door lock includes a cover 1 and a closed plate 4 fixedly connected to the back side of the cover 1. The lower end of the cover 1 is provided with a lower unlocking structure and the upper end is provided with an upper unlocking structure. The lower unlocking structure is linked with a lifting display component for displaying the open and closed status. The outer side of the cover 1 is provided with a window 3 and the lifting display component is located close to the window 3.

[0024] The lower unlocking structure is separately inserted into the unlocking key, while the upper unlocking structure is connected to the door handle 6.

[0025] In actual use, the upper and lower unlocking mechanisms are linked. The lower unlocking mechanism is fixed, while the upper unlocking mechanism is movable. Only after it is opened can people directly turn the door handle 6 and use the upper unlocking mechanism to open the lock. This is a conventional structure.

[0026] The lower unlocking structure includes an unlocking seat 21 rotatably connected to the lower end of the cover 1, and a lower key bar 5 with one end fixedly connected to the inner end of the unlocking seat 21. The unlocking seat 21 is provided with a keyhole, which is separately connected to the unlocking key. The other end of the lower key bar 5 is connected to the door lock.

[0027] The lifting display assembly includes a rotating rod 52 fixedly connected to the outside of the unlocking seat 21 at one end, a stop post 51 fixed to the inside of the cover 1, a limiting frame 12 fixed to the inside of the cover 1, and a lifting plate 53 that slides up and down inside the limiting frame 12. The other end of the rotating rod 52 is in separate contact with the outside of the stop post 51 and also in separate contact with the bottom of the limiting frame 12. A display mark is provided on the lifting plate 53, and the display mark moves up and down to the position of the window 3.

[0028] The display is marked with the fonts for "Closed" and "Open" arranged vertically.

[0029] It should be noted that the lifting display component is inspired by the "occupied" and "unoccupied" indicators on train carriage toilet doors. This solution combines these two ideas to design such a door lock.

[0030] The upper unlocking structure includes a rotating seat rotatably connected to the upper end of the cover 1, an upper key bar 7 with one end fixedly connected to the inner end of the rotating seat, the outer end of the rotating seat being connected to the door handle 6, and the other end of the upper key bar 7 being connected to the door lock.

[0031] The outer end of the limiting frame 12 is enclosed by a protective plate 11.

[0032] The upper and lower ends of the cover 1 are respectively fixed with an upper mounting post 10 and a lower mounting post 9, which are respectively fixedly connected to the sealing plate 4 by screws.

[0033] The upper and lower ends of the cover 1 are respectively fixed with an upper through hole 8 and a lower through hole 2, and the upper through hole 8 and the lower through hole 2 are respectively fixedly connected to the sealing plate 4 by bolts.

[0034] The specific working process of this utility model:

[0035] When the attendant turns the unlocking key 21 and uses the lower key lever 5 to open the door lock, the outer end of the lever 52 pushes up the lifting plate 53, thus displaying the "open" status. At this time, the door lock is opened under the action of the lower key lever 5. Then, people turn the door handle 6, and the upper key lever 7 opens the movable wedge on the door lock, thus opening the carriage door.

[0036] When the door lock is to be closed, the lifting plate 53 slides down under the action of gravity, thus displaying the "closed" status. At this time, the outer end of the rotating rod 52 abuts against the lower stop 51, which is convenient and quick, and can quickly and accurately determine whether the door is fully open or closed, thereby improving work efficiency and passenger service quality.

[0037] The specific structures of the lower key lever 5 and the upper key lever 7 can be found in the attached diagram. Their specific connection methods and functions are existing technologies and will not be described in detail here.

[0038] To simplify the design, the door locks in this solution are not shown in the attached drawings. This is hereby noted, but it does not affect the implementation of this solution.

[0039] The technical features of this utility model not described can be implemented by or by using existing technology, and will not be repeated here. Of course, the above description is not a limitation of this utility model, and this utility model is not limited to the examples above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model should also be within the protection scope of this utility model.

Claims

1. A railway passenger car door lock, comprising a cover (1) and a sealing plate (4) fixedly connected to the back side of the cover (1), characterized in that, The lower end of the box cover (1) is provided with a lower unlocking structure, and the upper end of the box cover (1) is provided with an upper unlocking structure. The lower unlocking structure is linked with a lifting display component for displaying the open and closed status. The outer side of the box cover (1) is provided with a window (3), and the lifting display component is located close to the window (3). The lower unlocking structure is separately inserted into the unlocking key, and the upper unlocking structure is connected to the door handle (6).

2. The railway passenger car door lock according to claim 1, characterized in that, The lower unlocking structure includes an unlocking seat (21) rotatably connected to the lower end of the cover (1), and a lower key rod (5) with one end fixedly connected to the inner end of the unlocking seat (21). The unlocking seat (21) is provided with a keyhole, which is separately connected to the unlocking key. The other end of the lower key rod (5) is connected to the door lock.

3. A railway passenger car door lock according to claim 2, characterized in that, The lifting display assembly includes a rotating rod (52) fixedly connected to the outside of the unlocking seat (21) at one end, a stop post (51) fixed inside the box cover (1), a limiting frame (12) fixed inside the box cover (1), and a lifting plate (53) slidably disposed inside the limiting frame (12). The other end of the rotating rod (52) is in separate contact with the outside of the stop post (51) and in separate contact with the bottom end of the limiting frame (12). The lifting plate (53) is provided with a display mark, which is moved up and down to the position of the window (3).

4. A railway passenger car door lock according to claim 3, characterized in that, The display identifier is a vertically arranged font for "closed" and "open".

5. A railway passenger car door lock according to claim 1, characterized in that, The upper unlocking structure includes a rotating seat rotatably connected to the upper end of the box cover (1), an upper key bar (7) with one end fixedly connected to the inner end of the rotating seat, the outer end of the rotating seat being connected to the door handle (6), and the other end of the upper key bar (7) being connected to the door lock.

6. A railway passenger car door lock according to claim 3, characterized in that, The outer end of the limiting frame (12) is enclosed by a protective plate (11).

7. A railway passenger car door lock according to claim 3, characterized in that, The upper and lower ends of the cover (1) are respectively fixed with an upper mounting post (10) and a lower mounting post (9), and the upper mounting post (10) and the lower mounting post (9) are respectively fixedly connected to the sealing plate (4) by screws.

8. A railway passenger car door lock according to claim 1, characterized in that, The upper and lower ends of the cover (1) are respectively fixed with an upper through hole (8) and a lower through hole (2), and the upper through hole (8) and the lower through hole (2) are respectively fixedly connected to the sealing plate (4) by bolts.

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