Armrest for getting on

Abstract

The utility model provides a getting-on handrail which comprises a fixed bottom plate, the fixed bottom plate is connected with a handrail body capable of sliding in the length direction of a vehicle body, and the handrail body is provided with two lock pins arranged in the sliding direction of the handrail body in a spaced mode. Two corresponding lock hooks are rotationally connected to the fixed bottom plate, an actuating assembly is further arranged on the fixed bottom plate, the actuating assembly is in linkage fit with the two lock hooks, the two lock hooks can be driven to rotate by operating the actuating assembly to achieve locking and unlocking with the two corresponding lock pins, and the armrest can be conveniently switched between the storage position and the stretching position. The getting-on handrail can slide in the direction perpendicular to the side wall of the vehicle body so that the length of the handrail can be adjusted, and old people can get on and off the vehicle conveniently.

Description

A type of handrail for getting on a vehicle Technical Field

[0001] This utility model relates to the field of medical vehicle technology, and more specifically, to a handrail for getting into a vehicle. Background Technology

[0002] Mobile medical vehicles are motorized vehicles used for medical examinations and treatments, equipped with relevant medical equipment and professional nurses and doctors. Mobile medical vehicles are increasingly used in rural areas, where they are often used to serve elderly people. Furthermore, because mobile medical vehicles typically operate in rural mountainous areas with often rugged roads, their chassis are generally high, making it difficult for the elderly to get in and out.

[0003] Currently, to facilitate elderly people getting on and off vehicles, handrails are generally installed in the corresponding positions of medical vehicles. However, the existing handrails are usually fixed to the vehicle body and are far from the ground, which still causes many inconveniences for the elderly during use.

[0004] To address this scenario, we developed a handrail that can extend outside the vehicle. After the vehicle comes to a complete stop, staff can unfold the handrail to facilitate the elderly getting on and off the vehicle. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to overcome at least one of the defects of the above-mentioned related technologies and provide a boarding handrail that can slide along a direction perpendicular to the vehicle body, making it convenient for the elderly to get on and off the vehicle.

[0006] The technical solution of this utility model is to provide a boarding handrail: including...

[0007] A fixed base plate is used to connect to the inner wall of the vehicle body;

[0008] The handrail has one end slidably connected to the fixed base plate along a direction perpendicular to the side wall of the vehicle body, and the handrail is provided with two locking pins spaced apart along its sliding direction.

[0009] A locking hook is rotatably connected to the fixed base plate;

[0010] An actuation component, connected to the fixed base plate, is used to drive the locking hook to rotate to lock with the corresponding locking pin or to rotate in the opposite direction to disengage from the locking pin, so that the handrail can switch between an extended position and a retracted position.

[0011] Furthermore, the handrail includes a handrail body and a first connecting rod and a second connecting rod distributed vertically. One end of each of the first and second connecting rods is connected to the handrail body, and the other end is slidably connected to the fixed base plate. A first locking pin is provided on the outer wall of the first connecting rod near the handrail body, and a second locking pin is provided on the outer wall of the second connecting rod away from the handrail body. The upper and lower ends of the fixed base plate are respectively provided with a first locking hook and a second locking hook. In the retracted position, the first locking hook is locked and limited by the first locking pin, and in the extended position, the second locking hook is locked and limited by the second locking pin.

[0012] Furthermore, the actuation assembly includes a handle plate, an upper pull rod, and a lower pull rod. The handle plate is slidably connected to the fixed base plate along the length of the handrail. The upper and lower pull rods are slidably connected to the fixed base plate vertically. The upper end of the upper pull rod is connected to one end of the first locking hook, and the lower end of the lower pull rod is connected to one end of the second locking hook. The lower end of the upper pull rod and the upper end of the lower pull rod are respectively linked and engaged with the handle plate. When the handle plate is pulled towards the handrail body in the retracted position, the upper pull rod moves downward, causing the first locking hook to rotate upward until it disengages from the first locking pin. When the handle plate is pulled towards the handrail body in the extended position, the lower pull rod moves upward, causing the second locking hook to rotate upward until it disengages from the second locking pin. The fixed base plate is also provided with a reset drive for driving the handle plate to reset and move away from the handrail body.

[0013] As an improvement, the first locking hook has a downward-facing locking port at one end near the armrest body, and a first pin is connected to the other end of the first locking hook. The upper end of the upper pull rod has a vertically extending first pin hole, in which the first pin is movably fitted. The first locking hook also has a first guide slope at one end near the armrest body. When the armrest is retracted to the point where the first locking pin engages with the first guide slope, the first locking hook can rotate upwards to a set height. Until the armrest is in the retracted position, the first locking hook automatically falls back to the first locking port and engages with the outside of the first locking pin. The second locking hook has a downward-facing second locking port at one end away from the handrail body, and a second pin is connected to the other end of the second locking hook. The lower end of the pull rod has a vertically extending second pin hole, and the second pin is movably fitted in the second pin hole. The second locking hook has a second guide slope at one end away from the handrail body. When the handrail extends to the point where the second locking pin engages with the second guide slope, the first locking hook can rotate upward to a set height until the handrail is in the fully extended position. At this point, the second locking hook automatically falls back to the second locking port and engages with the outside of the second locking pin.

[0014] In a further improvement, the handle plate has two symmetrically distributed first and second guide holes, with the first guide hole inclined upwards and the second guide hole inclined downwards; the lower end of the upper pull rod and the upper end of the lower pull rod are respectively slidably engaged in the first and second guide holes via guide pins.

[0015] In a further improvement, the reset drive component is a reset spring, one end of which is connected to the fixed base plate, and the other end is connected to the end of the handle plate away from the handrail body.

[0016] In a further improvement, the upper pull rod has at least two first elongated holes that extend vertically and are spaced apart, and the upper end of the fixed base plate has at least two first positioning pins that are slidably engaged in each of the first elongated holes; the lower pull rod has at least two second elongated holes that extend vertically and are spaced apart, and the lower end of the fixed base plate has at least two second positioning pins that are slidably engaged in each of the second elongated holes.

[0017] In a further improvement, the handle plate is provided with at least two third elongated holes that extend along its moving direction and are spaced apart, and the fixed base plate is provided with at least two third positioning pins for slidingly engaging in each of the third elongated holes.

[0018] In a further improvement, linear bearings are provided at both ends of the upper end of the fixed base plate, and the first connecting rod and the second connecting rod are slidably fitted in the corresponding linear bearings.

[0019] Compared with the prior art, the grab handle of this utility model has the following advantages:

[0020] 1. The handrail of this utility model can move along the length of the vehicle body to allow the handrail to be stored inside the vehicle body and extended outside the vehicle body, making it convenient for the elderly to get on and off the vehicle; and a corresponding locking mechanism is provided between the handrail and the inner side wall of the vehicle body to limit the handrail in the stored position and the extended position to ensure stability.

[0021] 2. A handle plate and upper and lower pull rods are installed on the fixed base plate. By pulling the handle plate horizontally, the upper and lower pull rods move vertically closer together, thereby causing the first and second locking hooks to flip and unlock, facilitating the switching between the retracted and extended positions of the handrail. In addition, a return spring is also installed on the fixed base plate. After each unlocking, the handle plate is released, and the handle plate returns to its original position under the action of the return spring. Under the action of the two guide holes, the upper and lower pull rods move outward and away from each other, causing the corresponding pin holes to separate from the pin shafts. The corresponding locking hooks can automatically fall back to their original position under their own weight.

[0022] Other improvements and advantages of this invention will be set forth in the detailed description that follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures particularly pointed out in the description and drawings. Attached Figure Description

[0023] Figure 1 is a structural diagram of the loading handrail of this utility model in its stored state;

[0024] Figure 2 is a structural diagram of the extended handrail of this utility model.

[0025] Figure 3 is an enlarged structural diagram of point A in Figure 1;

[0026] Figure 4 is an enlarged structural diagram of point B in Figure 1;

[0027] Figure 5 is an enlarged structural diagram of point C in Figure 2.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Fixed base plate; 2. Handrail body; 3. First connecting rod; 4. Second connecting rod; 5. First locking pin; 6. Second locking pin; 7. First locking hook; 8. Second locking hook; 9. Handle plate; 10. Upper pull rod; 11. Lower pull rod; 12. Reset drive component; 13. First locking port; 14. First pin shaft; 15. First pin hole; 16. First guide slope; 17. Second locking port; 18. Second pin shaft; 19. Second pin hole; 20. Second guide slope; 21. First guide hole; 22. Second guide hole; 23. First elongated hole; 24. First positioning pin; 25. Second elongated hole; 26. Second positioning pin; 27. Third elongated hole; 28. Third positioning pin; 29. ​​Linear bearing; 30. Limiting boss; Detailed Implementation

[0030] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0031] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0032] In this embodiment of the utility model, unless otherwise explicitly specified and limited, the first feature at the "upper end" or "lower end" of the second feature may be in direct contact with the first feature, or indirect contact with the first feature through an intermediate medium. Moreover, the first feature at the "lower end" or "lower side" of the second feature may be directly below or diagonally below the second feature, or simply indicate that the horizontal height of the first feature is less than that of the second feature.

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0034] Referring to Figures 1 to 5, this utility model embodiment discloses a vehicle entry handrail, the structure of which includes a fixed base plate 1 for connecting to the inner side wall of the vehicle body. The fixed base plate 1 is connected to a handrail that can slide along a direction perpendicular to the side wall of the vehicle body. Specifically, when the vehicle door is open on the left or right side of the vehicle body, the handrail can move along a direction perpendicular to the left or right side panels of the vehicle body (the width direction of the vehicle body); when the vehicle door is open on the rear panel of the vehicle body, the handrail can move along a direction perpendicular to the side panel of the vehicle body (the length direction of the vehicle body). Furthermore, two locking pins are provided on the handrail at intervals along its sliding direction; two corresponding locking hooks are provided on the fixed base plate 1, and the locking hooks are rotatably connected to the fixed base plate 1. An actuation component is also provided on the fixed base plate 1, which is linked with the two locking hooks. That is, the actuation component can drive the locking hooks to rotate to lock and unlock with the two corresponding locking pins. In this embodiment, the positions of the two locking pins correspond to the two positions of the handrail: the extended position and the retracted position. The retracted position refers to the handrail being retracted onto the inner wall of the vehicle body when not in use; the extended position refers to the handrail extending out of the vehicle body when pulled out for use, making it convenient for the elderly to get on and off the vehicle. The two position states are locked and unlocked by the drive component, which is very convenient.

[0035] More specifically, in this embodiment, the handrail includes a handrail body 2 and two vertically distributed first connecting rods 3 and second connecting rods 4. The handrail body 2 includes a vertical rod and two horizontal rods, and the vertical and horizontal rods are an integral structure, formed by bending a whole round tube, with an arc-shaped transition section at the connection. The ends of the two horizontal rods away from the vertical rod are bent inward to ensure that the free ends of the two horizontal rods are horizontal, for connecting to one end of the first connecting rod 3 and the second connecting rod 4 respectively. The other ends of the first connecting rod 3 and the second connecting rod 4 are slidably connected to the fixed base plate 1. Specifically, linear bearings 29 are provided at both the upper and lower ends of the fixed base plate 1, and the first connecting rod 3 and the second connecting rod 4 are slidably engaged in the corresponding linear bearings 29, so that the handrail can flexibly extend and retract along the length of the vehicle body.

[0036] In the above structure, preferably, two linear bearings 29 arranged at intervals are provided at the upper end of the fixed base plate 1, and one linear bearing 29 is provided at the lower end of the fixed plate. The length of the first connecting rod 3 is greater than the length of the second connecting rod 4. A limiting boss 30 for axial limiting is provided at the end of the first connecting rod 3 and the second connecting rod 4 away from the handrail body 2, as shown in Figure 1.

[0037] In this embodiment, preferably, referring to Figures 4 and 5, a first locking pin 5 is provided on the outer wall of the first connecting rod 3 near the end of the handrail body 2, and a second locking pin 6 is provided on the outer wall of the second connecting rod 4 away from the end of the handrail body 2. Correspondingly, a first locking hook 7 and a second locking hook 8 are rotatably provided at the upper and lower ends of the fixed base plate 1, respectively. In the retracted position, the first locking hook 7 is locked and limited to the first locking pin 5. When the handrail needs to be pulled outward, the actuation component drives the first locking hook 7 to separate and unlock from the first locking pin 5 until the handrail moves to the extended position, at which point the actuation component drives the second locking hook 8 to rotate and lock and limit to the second locking pin 6. Similarly, when the handrail needs to be retracted from the extended position, the actuation component drives the second locking hook 8 to separate and unlock from the second locking pin 6, and the handrail can then be moved into the vehicle body for storage.

[0038] Additionally, referring to Figure 3, the actuation component in this embodiment includes a handle plate 9, an upper pull rod 10, and a lower pull rod 11. The handle plate 9 is slidably connected to the fixed base plate 1 along the length of the vehicle body. In order to ensure that it can slide smoothly, at least two third elongated holes 27 extending along its moving direction and spaced apart are provided on the handle plate 9. The fixed base plate 1 is provided with at least two third positioning pins 28 for slidingly engaging in each of the third elongated holes 27. The upper pull rod 10 and the lower pull rod 11 are vertically slidably connected to the fixed base plate 1. The upper end of the upper pull rod 10 is connected to one end of the first locking hook 7, and the lower end of the lower pull rod 11 is connected to one end of the second locking hook 8. The lower end of the upper pull rod 10 and the upper end of the lower pull rod 11 are respectively linked and engaged with the handle plate 9. When the handle plate 9 is pulled towards the armrest body 2 in the storage position, the upper pull rod 10 moves downward, causing the first locking hook 7 to rotate upward until it disengages from the first locking pin 5. At this time, the second locking hook 8 will also... When the handle plate 9 is pulled upwards, the second locking hook 8 and the second locking pin 6 are not in the same position, so there is no unlocking; it simply spins freely. Similarly, when the handle plate 9 is pulled towards the side of the handrail body 2 while in the extended position, the pull rod 11 moves upwards, causing the second locking hook 8 to rotate upwards until it disengages from the second locking pin 6. At this time, the first locking hook 7 will also rotate, but it is not related to the first pin 14. Furthermore, the fixed base plate 1 is also provided with a reset drive component 12 for driving the handle plate 9 to reset towards the side away from the handrail body 2. With the addition of the reset drive component 12 in this structure, each time the handle plate 9 is pulled to unlock, the handle plate 9 can be reset in the opposite direction after the external force is released, making operation convenient.

[0039] More specifically, please refer to Figure 4. In the above structure, the first locking hook 7 has a first locking hole 13 with an opening facing downward at one end near the handrail body 2. The other end of the first locking hook 7 is rotatably connected to the fixed base plate 1 through a hinge shaft. The other end of the first locking hook 7 is connected to a first pin 14 near the hinge shaft. The upper end of the upper pull rod 10 has a first pin hole 15 extending vertically. The first pin 14 is movably fitted in the first pin hole 15. The up and down movement of the upper pull rod 10 drives the first locking hook 7 to rotate through the first pin 14. In this structure, when the handle plate 9 is in a free state, the first pin 14 has up and down movement space in the first pin hole 15. That is, at this time, the first locking hook 7 can automatically fall back under its own gravity. Preferably, a first guide slope 16 is provided at one end of the first locking hook 7 near the handrail body 2. When the handrail is retracted and the first locking pin 5 contacts and engages with the first guide slope 16, the first locking hook 7 can slowly rotate upward to a set height. When the handrail is moved to the retracted position, the first locking hook 7 automatically falls back to the first locking opening 13 and engages with the outside of the first locking pin 5 to lock the handrail in the retracted position.

[0040] Similarly, referring to Figure 5, the second locking hook 8 has a downward-facing second locking port 17 at one end away from the handrail body 2. The other end of the second locking hook 8 is rotatably connected to the fixed base plate 1 via a hinge shaft. A second pin 18 is provided between the second locking port 17 and the hinge shaft, and at one end near the hinge shaft. A second pin hole 19 extending vertically is provided at the lower end of the pull rod 11. The second pin 18 is movably fitted into the second pin hole 19. A second guide slope 20 is provided at one end of the second locking hook 8 away from the handrail body 2. When the handrail extends to the point where the second locking pin 6 engages with the second guide slope 20, the first locking hook 7 can rotate upward to a set height. When the handrail is in the fully extended position, the second locking hook 8 automatically falls back to the second locking port 17 and engages with the outside of the second locking pin 6, thereby locking the handrail in the extended position.

[0041] Furthermore, in the aforementioned structure, referring again to Figure 3, two symmetrically distributed first guide holes 21 and second guide holes 22 are provided on the handle plate 9. The first guide hole 21 is inclined upwards along the vehicle body from front to back, and the second guide hole 22 is inclined downwards along the vehicle body from front to back. The lower end of the upper pull rod 10 and the upper end of the lower pull rod 11 are respectively slidably engaged in the first guide hole 21 and the second guide hole 22 through guide pins. With this arrangement, regardless of whether in the retracted or extended position, when the handle plate 9 is pulled towards the rear of the vehicle body, the upper pull rod 10 and the lower pull rod 11 move inwards closer together under the action of the two guide holes, realizing the upward rotation of the first locking hook 7 and the second locking hook 8, thereby unlocking the corresponding position. In this structure, the reset drive component 12 is a reset spring. One end of the reset spring is connected to the fixed base plate 1, and the other end is connected to the end of the handle plate 9 away from the armrest body 2. After each unlocking, the handle plate 9 is released, and under the action of the return spring, the handle plate 9 is reset in the opposite direction. Under the action of the two guide holes, the upper pull rod 10 and the lower pull rod 11 move outward and away from each other, driving the corresponding pin hole to separate from the pin shaft, and the corresponding lock hook automatically falls back to reset.

[0042] The upper pull rod 10 has at least two vertically extending and spaced-apart first elongated holes 23, and the upper end of the fixed base plate 1 has at least two first locating pins 24 that are slidably engaged in each of the first elongated holes 23. The lower pull rod 11 has at least two vertically extending and spaced-apart second elongated holes 25, and the lower end of the fixed base plate 1 has at least two second locating pins 26 that are slidably engaged in each of the second elongated holes 25. The stability of the upper pull rod 10 and the lower pull rod 11 in vertical movement is achieved through the engagement of the locating pins and the elongated holes.

[0043] In this embodiment, the handle plate 9 does not need to be held in a pulled state for a long time during each unlocking process. The handle can be released once the locking pin and hook disengage. The linear optical axis continues to move along the linear bearing 29 until the extended locking pin and the extended locking hook contact each other. The locking hook has an inclined surface; when it encounters the locking pin, the locking hook will rotate upwards. The pull rod has an elongated hole, and the small pin on the locking hook moves within a certain range in the elongated hole of the pull rod, allowing the locking hook to rotate freely within a certain range. Therefore, after the extended locking pin is lifted, it will rotate downwards due to gravity, thereby locking the handrail.

[0044] In addition, in this embodiment, in order to increase the aesthetic appearance, a cover plate (not shown in the figure) is also connected to the fixed base plate 1. The cover plate is used to cover the corresponding parts on the fixed base plate 1 so that the linear bearing 29, spring and other parts are not visible in the vehicle body.

[0045] In the description of the embodiments of this utility model, it should be noted that the terms "upper", "lower", "both sides", etc., indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0046] In the description of this utility model, the reference to terms such as "this embodiment," "some embodiments," etc., indicates that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0047] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A handrail for boarding a vehicle, characterized in that: Includes a fixed base plate (1) for connection to the inner wall of the vehicle body; The armrest has one end slidably connected to the fixed base plate (1) in a direction perpendicular to the side wall of the vehicle body, and the armrest is provided with two locking pins spaced apart in its sliding direction; the locking hook is rotatably connected to the fixed base plate (1); the actuation component is connected to the fixed base plate (1) and is used to drive the locking hook to rotate to lock with the corresponding locking pin or rotate in the opposite direction to disengage from the locking pin, so that the armrest can switch between the extended position and the retracted position.

2. The boarding handrail according to claim 1, characterized in that: The handrail includes a handrail body (2) and a first connecting rod (3) and a second connecting rod (4) distributed vertically. One end of the first connecting rod (3) and the second connecting rod (4) is connected to the handrail body (2), and the other end is slidably connected to the fixed base plate (1). The first connecting rod (3) is provided with a first locking pin (5) on the outer wall near the end of the handrail body (2), and the second connecting rod (4) is provided with a second locking pin (6) on the outer wall away from the end of the handrail body (2). The upper and lower ends of the fixed base plate (1) are respectively provided with a first locking hook (7) and a second locking hook (8). When in the retracted position, the first locking hook (7) is locked and limited with the first locking pin (5). When in the extended position, the second locking hook (8) is locked and limited with the second locking pin (6).

3. The boarding handrail according to claim 2, characterized in that: The actuation assembly includes a handle plate (9), an upper pull rod (10), and a lower pull rod (11). The handle plate (9) is slidably connected to the fixed base plate (1) along the length of the handrail. The upper pull rod (10) and the lower pull rod (11) are slidably connected to the fixed base plate (1) vertically. The upper end of the upper pull rod (10) is connected to one end of the first locking hook (7), and the lower end of the lower pull rod (11) is connected to one end of the second locking hook (8). The lower end of the upper pull rod (10) and the upper end of the lower pull rod (11) are respectively linked to the handle plate (9). When the handle plate (9) is pulled towards the armrest body (2) in the storage position, the upper pull rod (10) moves downward to drive the first locking hook (7) to rotate upward until it disengages from the first locking pin (5); when the handle plate (9) is pulled towards the armrest body (2) in the extended position, the lower pull rod (11) moves upward to drive the second locking hook (8) to rotate upward until it disengages from the second locking pin (6), and the fixed base plate (1) is also provided with a reset drive member (12) for driving the handle plate (9) to reset and move away from the armrest body (2).

4. The boarding handrail according to claim 3, characterized in that: The first locking hook (7) has a first locking opening (13) with its opening facing downward at one end near the armrest body (2), and a first pin (14) is connected to the other end of the first locking hook (7). The upper end of the upper pull rod (10) has a first pin hole (15) extending vertically, and the first pin (14) is movably fitted in the first pin hole (15). The first locking hook (7) has a first guide slope (16) at one end near the armrest body (2). When the armrest is retracted to the point where the first locking pin (5) engages with the first guide slope (16), the first locking hook (7) can rotate upward to a set height until the armrest is in the retracted position. At this point, the first locking hook (7) automatically falls back to the first locking opening (13) and engages with the outside of the first locking pin (5). The second locking hook (8) has a second locking opening (17) facing downward at one end away from the handrail body (2), and the other end of the second locking hook (8) is connected to a second pin (18). The lower end of the pull rod (11) has a second pin hole (19) extending vertically. The second pin (18) is movably fitted in the second pin hole (19), and the second locking hook (8) has a second guide slope (20) at one end away from the handrail body (2). When the handrail extends and moves to the point where the second locking pin (6) engages with the second guide slope (20), the first locking hook (7) can rotate upward to a set height until the handrail is in the fully extended position. Then, the second locking hook (8) automatically falls back to the second locking opening (17) and engages with the outside of the second locking pin (6).

5. The boarding handrail according to claim 3, characterized in that: The handle plate (9) has two symmetrically distributed first guide holes (21) and second guide holes (22). The first guide hole (21) is inclined upward and the second guide hole (22) is inclined downward. The lower end of the upper pull rod (10) and the upper end of the lower pull rod (11) are respectively slidably engaged in the first guide hole (21) and the second guide hole (22) through guide pins.

6. The boarding handrail according to claim 3 or 5, characterized in that: The reset drive (12) is a reset spring. One end of the reset spring is connected to the fixed base plate (1), and the other end is connected to the end of the handle plate (9) away from the handrail body (2).

7. The boarding handrail according to claim 3 or 4, characterized in that: The upper pull rod (10) has at least two first elongated holes (23) that extend vertically and are spaced apart. The upper end of the fixed base plate (1) has at least two first positioning pins (24) that are slidably engaged in each of the first elongated holes (23). The lower pull rod (11) has at least two second elongated holes (25) that extend vertically and are spaced apart. The lower end of the fixed base plate (1) has at least two second positioning pins (26) that are slidably engaged in each of the second elongated holes (25).

8. The boarding handrail according to claim 5, characterized in that: The handle plate (9) has at least two third elongated holes (27) that extend along its moving direction and are spaced apart. The fixed base plate (1) has at least two third positioning pins (28) that are respectively slidably fitted in each of the third elongated holes (27).

9. The boarding handrail according to claim 2, characterized in that: The upper ends of the fixed base plate (1) are provided with linear bearings (29), and the first connecting rod (3) and the second connecting rod (4) are respectively slidably fitted in the corresponding linear bearings (29).

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