Sliding sliding door for motor train unit
The coordination of the U-shaped double lock tongue, stop pin and spring solves the problem of EMU sliding door failing to stop during vehicle acceleration or deceleration, achieves stable locking and low-cost design of the sliding door, and simplifies maintenance operations.
Patent Information
- Application Number
- CN202422863554.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-24
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-11-24
AI Technical Summary
The stopping mechanism of the EMU sliding door is easy to disengage during vehicle acceleration or deceleration, resulting in stopping failure. The existing spring clip limit stop structure is easy to damage and difficult to maintain.
The U-shaped double lock tongue, stop pin and spring are used to cooperate with each other to realize sliding and locking in different states. The structure is simple and the operation is convenient.
It effectively prevents the brake from failing, reduces costs, simplifies maintenance, makes unlocking easy, and makes the brake firm and not easy to fall off.
Smart Images
Figure CN223315007U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of rail vehicles, and in particular to a sliding door for an EMU. Background Art
[0002] At present, the opening position of the sliding doors of EMUs is equipped with a stop structure to prevent the door panels from sliding freely and injuring passengers while the vehicle is moving. The stop mechanism of most sliding doors uses spring clips for limit stops, which can easily come out during the acceleration or deceleration of the vehicle, resulting in failure of the stop.
[0003] Therefore, in order to meet actual needs, a sliding door for an EMU is provided. Summary of the Invention
[0004] In response to the defects in the prior art, the purpose of this application is to provide a sliding door for EMUs, which realizes the sliding and locking of the sliding door through the cooperation of U-shaped double lock tongues, stop pins and springs. It has a simple structure, is easy to operate, and effectively reduces costs while ensuring functionality.
[0005] In order to achieve the above objectives, the technical solution adopted by this application is:
[0006] The present application provides a sliding door for an EMU, the sliding door comprising:
[0007] door frame;
[0008] Sliding door set on the door frame;
[0009] A stop pin is provided at the lower edge of the top frame of the door frame, wherein the length direction of the stop pin is perpendicular to the plane on which the sliding door is located;
[0010] a spring limit block provided in the sliding door;
[0011] A pull rod is slidably inserted on the spring limit block, the top of the pull rod is provided with a U-shaped double lock tongue, and the top surface of the U-shaped double lock tongue is provided with a groove;
[0012] A spring is sleeved on the pull rod in the area between the spring limit block and the U-shaped double lock tongue;
[0013] The pull rod is configured to move up and down within the spring limit block under the elastic force support of the spring, thereby driving the U-shaped double lock tongue to move up and down;
[0014] The U-shaped double lock tongue is configured to switch between a first state, a second state, and a third state;
[0015] When the U-shaped double lock tongue is in the first state, the spring is in a normal state, and the stop pin is located in the groove of the U-shaped double lock tongue;
[0016] When the U-shaped double lock tongue is in the second state, the spring is in a compressed state, and the stop pin is disengaged from the groove of the U-shaped double lock tongue;
[0017] When the U-shaped double lock tongue is in the third state, the spring is in a normal state, and the stop pin is located outside the groove of the U-shaped double lock tongue.
[0018] On the basis of the above technical solution, the length direction of the spring limit block is parallel to the sliding direction of the sliding door.
[0019] On the basis of the above technical solution, the length direction of the spring limit block is perpendicular to the length direction of the pull rod.
[0020] On the basis of the above technical solution, the two ends of the spring are respectively connected to the bottom surface of the U-shaped double lock tongue and the top surface of the spring limit block.
[0021] On the basis of the above technical solution, the U-shaped double lock tongue is an isosceles trapezoidal plate, the top surface of the U-shaped double lock tongue corresponds to the short side of the isosceles trapezoid, and the bottom surface of the U-shaped double lock tongue corresponds to the long side of the isosceles trapezoid;
[0022] The top surface of the U-shaped double lock tongue is provided with the groove.
[0023] Compared with the prior art, the advantages of this application are:
[0024] This application realizes the sliding and locking of the sliding door through the cooperation of U-shaped double lock tongues, stop pins and springs. It has a simple structure and is easy to operate, effectively reducing costs while ensuring functionality. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0026] Figure 1 This is a schematic structural diagram of a sliding door for an EMU according to an embodiment of the present application;
[0027] Figure 2 This is a schematic structural diagram of a U-shaped double lock tongue for a sliding door for an EMU according to an embodiment of the present application;
[0028] In the picture:
[0029] 1. Door frame; 10. Top frame; 2. Sliding door; 3. Stop pin; 4. Spring limit block; 5. Pull rod; 6. U-shaped double lock tongue; 60. Groove; 7. Spring. DETAILED DESCRIPTION
[0030] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.
[0031] The embodiments of the present application are further described in detail below with reference to the accompanying drawings.
[0032] An embodiment of the present application provides a sliding door for an EMU, which realizes the sliding and locking of the sliding door through the cooperation of a U-shaped double lock tongue, a stop pin and a spring. It has a simple structure and is easy to operate, effectively reducing costs while ensuring functionality.
[0033] To achieve the above technical effects, the overall idea of this application is as follows:
[0034] A sliding door for an EMU, comprising:
[0035] Door frame 1;
[0036] A sliding door 2 is slidably arranged on the door frame 1;
[0037] A stop pin 3 is provided on the lower edge of the top frame 10 of the door frame 1, wherein the length direction of the stop pin 3 is perpendicular to the plane where the sliding door 2 is located;
[0038] A spring limit block 4 provided in the sliding door 2;
[0039] A pull rod 5 is slidably inserted into the spring limit block 4, and a U-shaped double lock tongue 6 is provided on the top of the pull rod 5, and a groove 60 is provided on the top surface of the U-shaped double lock tongue 6;
[0040] A spring 7 is sleeved on the pull rod 5 in the area between the spring stop block 4 and the U-shaped double lock tongue 6;
[0041] The pull rod 5 is configured to move up and down in the spring limit block 4 under the elastic support of the spring 7, thereby driving the U-shaped double lock tongue 6 to move up and down;
[0042] The U-shaped double lock tongue 6 is configured to be switchable between a first state, a second state and a third state;
[0043] When the U-shaped double lock tongue 6 is in the first state, the spring 7 is in the normal state, and the stop pin 3 is located in the groove 60 of the U-shaped double lock tongue 6;
[0044] When the U-shaped double lock tongue 6 is in the second state, the spring 7 is in a compressed state, and the stop pin 3 is disengaged from the groove 60 of the U-shaped double lock tongue 6;
[0045] When the U-shaped double lock tongue 6 is in the third state, the spring 7 is in a normal state, and the stop pin 3 is located outside the groove 60 of the U-shaped double lock tongue 6 .
[0046] The embodiments of the present application are further described in detail below with reference to the accompanying drawings.
[0047] See also Figures 1-2 As shown, an embodiment of the present application provides a sliding door for an EMU, the sliding door for an EMU comprising:
[0048] Door frame 1;
[0049] A sliding door 2 is slidably arranged on the door frame 1;
[0050] A stop pin 3 is provided on the lower edge of the top frame 10 of the door frame 1, wherein the length direction of the stop pin 3 is perpendicular to the plane where the sliding door 2 is located;
[0051] A spring limit block 4 provided in the sliding door 2;
[0052] A pull rod 5 is slidably inserted into the spring limit block 4, and a U-shaped double lock tongue 6 is provided on the top of the pull rod 5, and a groove 60 is provided on the top surface of the U-shaped double lock tongue 6;
[0053] A spring 7 is sleeved on the pull rod 5 in the area between the spring stop block 4 and the U-shaped double lock tongue 6;
[0054] The pull rod 5 is configured to move up and down in the spring limit block 4 under the elastic support of the spring 7, thereby driving the U-shaped double lock tongue 6 to move up and down;
[0055] The U-shaped double lock tongue 6 is configured to be switchable between a first state, a second state and a third state;
[0056] When the U-shaped double lock tongue 6 is in the first state, the spring 7 is in the normal state, and the stop pin 3 is located in the groove 60 of the U-shaped double lock tongue 6;
[0057] When the U-shaped double lock tongue 6 is in the second state, the spring 7 is in a compressed state, and the stop pin 3 is disengaged from the groove 60 of the U-shaped double lock tongue 6;
[0058] When the U-shaped double lock tongue 6 is in the third state, the spring 7 is in a normal state, and the stop pin 3 is located outside the groove 60 of the U-shaped double lock tongue 6 .
[0059] In the embodiment of the present application, the sliding and locking of the sliding door are achieved through the cooperation of the U-shaped double lock tongue, the stop pin and the spring. It has a simple structure and is easy to operate, effectively reducing costs while ensuring functionality.
[0060] The purpose of the embodiments of the present application is to solve the problem of failure of the original sliding door stop mechanism to stop under vehicle acceleration or deceleration or unexpected pulling force;
[0061] Solve the problem that the original spring card stop structure is difficult to maintain;
[0062] Solve the problem of difficulty in selecting the elastic force of the original stop spring. If the spring force is too large, it will take a lot of force to close the door. If the spring force is too small, unexpected forces such as vehicle acceleration and deceleration will cause the door leaf to easily break away from the stop.
[0063] Furthermore, the length direction of the spring limit block 4 is parallel to the sliding direction of the sliding door 2 .
[0064] Furthermore, the length direction of the spring limit block 4 is perpendicular to the length direction of the pull rod 5 .
[0065] Furthermore, both ends of the spring 7 are connected to the bottom surface of the U-shaped double locking tongue 5 and the top surface of the spring limit block 4 respectively.
[0066] Furthermore, the U-shaped double lock tongue 6 is an isosceles trapezoidal plate, the top surface of the U-shaped double lock tongue 6 corresponds to the short side of the isosceles trapezoid, and the bottom surface of the U-shaped double lock tongue 6 corresponds to the long side of the isosceles trapezoid;
[0067] The top surface of the U-shaped double locking tongue 6 is provided with the groove 60 .
[0068] Based on the technical solution of the embodiment of this application, in actual implementation, the situation is as follows:
[0069] The stop pin 3 is fixed on the guide rail of the door frame 1, and the sliding door 2 is slidably set on the guide rail of the door frame 1. The U-shaped double lock tongue 6 is fixed together with the pull rod 5, and is connected to the door handle rotation mechanism through the pull rod 5. The pull rod 5 is provided with a spring 7 and a spring limit block 4. The U-shaped double lock tongue 6 can be extended under the action of the spring force and locked on the stop pin 3 to realize the stopping of the door leaf.
[0070] When the lock needs to be unlocked, it is only necessary to turn or pull the door handle to overcome the thrust of the spring 7, so that the pull rod 5 moves up and down, driving the U-shaped double lock tongue 6 to disengage the stop pin 3, and the lock can be unlocked.
[0071] In summary, the technical solutions of the embodiments of the present application have the following technical advantages:
[0072] The brake is firm and will not fail due to external forces such as vehicle acceleration and deceleration;
[0073] Unlocking is simple, just turn the handle to unlock easily;
[0074] The U-shaped double lock tongue structure has multiple uses. The lock tongue on the door closing side can realize the normal closing position stop and can also stop the door leaf in the open position.
[0075] Maintenance is simple and convenient. The U-shaped double lock tongue cleverly combines the stop structure with the door lock mechanism. It does not need to be installed at the end of the door leaf, making maintenance easy.
[0076] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.
[0077] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.
[0078] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.
Claims
1. A sliding door for an EMU, characterized in that: The sliding door for the EMU comprises: Door frame (1); A sliding door (2) slidably arranged on the door frame (1); A stop pin (3) is arranged on the lower edge of the top frame (10) of the door frame (1), wherein the length direction of the stop pin (3) is perpendicular to the plane on which the sliding door (2) is located; A spring limiting block (4) disposed inside the sliding door (2); A pull rod (5) is slidably inserted on the spring limit block (4), the top end of the pull rod (5) is provided with a U-shaped double lock tongue (6), and the top surface of the U-shaped double lock tongue (6) is provided with a groove (60); A spring (7) is sleeved on the pull rod (5) in an area between the spring stop block (4) and the U-shaped double lock tongue (6); The pull rod (5) is configured to move up and down in the spring limit block (4) under the elastic support of the spring (7), thereby driving the U-shaped double lock tongue (6) to move up and down; The U-shaped double lock tongue (6) is configured to be switchable between a first state, a second state and a third state; When the U-shaped double lock tongue (6) is in a first state, the spring (7) is in a normal state, and the stop pin (3) is located in the groove (60) of the U-shaped double lock tongue (6); When the U-shaped double lock tongue (6) is in the second state, the spring (7) is in a compressed state, and the stop pin (3) is disengaged from the groove (60) of the U-shaped double lock tongue (6); When the U-shaped double lock tongue (6) is in the third state, the spring (7) is in a normal state, and the stop pin (3) is located outside the groove (60) of the U-shaped double lock tongue (6).
2. The sliding door for an EMU according to claim 1, wherein: The length direction of the spring limit block (4) is parallel to the sliding direction of the sliding door (2).
3. The sliding door for an EMU according to claim 1, wherein: The length direction of the spring limit block (4) is perpendicular to the length direction of the pull rod (5).
4. The sliding door for an EMU according to claim 1, wherein: The two ends of the spring (7) are respectively connected to the bottom surface of the U-shaped double lock tongue (6) and the top surface of the spring limit block (4).
5. The sliding door for an EMU according to claim 1, wherein: The U-shaped double lock tongue (6) is an isosceles trapezoidal plate, the top surface of the U-shaped double lock tongue (6) corresponds to the short side of the isosceles trapezoid, and the bottom surface of the U-shaped double lock tongue (6) corresponds to the long side of the isosceles trapezoid; The top surface of the U-shaped double lock tongue (6) is provided with the groove (60).