Telescopic stepping device

Abstract

The utility model provides a telescopic stepping device which comprises an air cylinder framework, a stepping framework, a telescopic air cylinder and a telescopic assembly, the air cylinder framework is rotationally connected with the stepping framework, the telescopic assembly is hinged to the air cylinder framework and the stepping framework, the telescopic assembly comprises a second connecting piece and a bent arm, and the rear end of the bent arm is rotationally connected with the bottom of the rear end of a lower support. The front end of the telescopic assembly is rotationally connected with the middle of the second connecting piece, the lower end of the second connecting piece is rotationally connected with the stepping framework, the upper end of the second connecting piece is rotationally connected with the air cylinder framework, and the lower end of the telescopic air cylinder is rotationally connected with the middle of the bent arm. The stepping telescopic device can adapt to stepping platforms of different heights, applicability is improved, and meanwhile people can get on and off the vehicle conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to a telescopic step device. Background Art

[0002] The bus industry is gradually paying attention to the convenience and comfort of use, especially public buses, which are equipped with step devices to facilitate wheelchairs to get on and off the bus.

[0003] Currently, most steps are non-retractable and have a fixed length. The steps take up a lot of space when they are deployed. Buses have many stops, and the steps are located at varying distances from the platform steps and height from the ground. When the bus steps are high above the ground, manually deploying the steps creates a steep slope, placing the bus too close to the platform steps. When the steps are deployed, there's little space between them and the bottom of the steps, making it difficult for people to get on and off.

[0004] In view of this, the inventor specially designed a telescopic stepping device, and this case was thus produced. Utility Model Content

[0005] In order to solve the above problems, the technical solution of the present utility model is as follows:

[0006] A telescopic stepping device, comprising:

[0007] The cylinder frame includes an upper bracket and a lower bracket, wherein the upper bracket and the lower bracket are fixedly connected, and an accommodating space is provided inside the upper bracket;

[0008] The step frame is hinged to the lower bracket via a first connecting member, wherein one end of the first connecting member is rotatably connected to the middle of the step frame, and the other end thereof is rotatably connected to the bottom of the front end of the lower bracket;

[0009] a telescopic cylinder, disposed inside the accommodating space and rotatably connected to the upper bracket;

[0010] The telescopic assembly includes a second connecting member and a curved arm. The rear end of the curved arm is rotatably connected to the bottom of the rear end of the lower bracket, and the front end is rotatably connected to the middle of the second connecting member. The lower end of the second connecting member is rotatably connected to the top of the rear end of the step frame, and the upper end is rotatably connected to the middle of the cylinder frame. The output shaft of the telescopic cylinder is rotatably connected to the middle of the curved arm.

[0011] Preferably, the upper bracket is a rectangular parallelepiped frame with an opening at the bottom end, and the bottom end of the upper bracket is welded to the lower bracket.

[0012] Preferably, the lower bracket includes a trapezoidal frame and a rectangular frame, the rectangular frame is welded to the bottom end of the upper bracket, the shorter side of the trapezoidal frame is welded to the rectangular frame, and the shorter side of the trapezoidal frame is welded to the rectangular frame and one side has the same length.

[0013] Preferably, the upper bracket is provided with a first short articulated seat for connecting to the telescopic cylinder, and the bottom of the lower bracket is provided with a second short articulated seat for connecting to the second connecting member, and the first short articulated seat and the second short articulated seat are aligned and distributed in the horizontal direction.

[0014] Preferably, a long hinge seat is symmetrically provided at the bottom of the lower bracket, the first connecting member is rotatably connected to the long hinge seat, and the downward extending length of the long hinge seat is greater than that of the short hinge seat.

[0015] Preferably, a third short hinge seat is fixed to a side of the step frame close to the telescopic assembly, and the step frame is hinged to the lower end of the second connecting member through the third short hinge seat.

[0016] Preferably, the telescopic assembly further comprises a third connecting member, the front end of the third connecting member being rotatably connected to the middle portion of the second connecting member, and the rear end of the third connecting member being rotatably connected to the front end of the curved arm.

[0017] Preferably, the second connecting member is provided with a first connecting hole, and the third connecting member is rotatably connected to the second connecting member by a rotating shaft passing through the first connecting hole.

[0018] Preferably, the bent arm is in a V-shape as a whole, a second connecting hole is provided at the recessed portion of the bent arm, and the output end of the telescopic cylinder is inserted into the second connecting hole via a pin shaft to realize rotational connection with the bent arm.

[0019] Preferably, the step frame is rectangular as a whole, and its surface is covered with step boards.

[0020] The technical solution provided by the utility model has the following beneficial effects:

[0021] 1. The utility model drives the telescopic assembly to move through the telescopic cylinder, thereby allowing the step plate to achieve the purpose of free extension and retraction, so that the step telescopic device can adapt to step platforms of different heights, improving applicability while making it easier for people to get on and off the vehicle.

[0022] 2. The provision of the third connecting piece makes the telescopic assembly more flexible during use, thus avoiding damage to the device.

[0023] 3. By installing treads on the tread frame, people can get on and off the bus more safely and conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0025] in:

[0026] Figure 1 This is one of the overall structural diagrams of the utility model;

[0027] Figure 2 This is the second schematic diagram of the overall structure of the utility model;

[0028] Figure 3 This is a schematic diagram of the three-dimensional structure of the utility model highlighting the cylinder frame;

[0029] Figure 4 This is a schematic diagram of the three-dimensional structure of the utility model highlighting the curved arm;

[0030] Figure 5 The utility model highlights the three-dimensional structural schematic diagram of the second connecting member.

[0031] Description of labels:

[0032] 1. Cylinder frame; 11. Upper bracket; 12. Lower bracket; 121. Trapezoidal frame; 122. Rectangular frame; 13. Accommodating space; 14. First short hinge seat; 15. Second short hinge seat; 16. Long hinge seat; 2. Step frame; 21. Step board; 22. First connecting piece; 3. Telescopic cylinder; 4. Telescopic assembly; 41. Second connecting piece; 411. First connecting hole; 42. Bend arm; 421. Second connecting hole; 422. Pin; 43. Third short hinge seat; 44. Third connecting piece; 45. Rotating shaft. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clear and understandable, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] Please refer to Figures 1 to 5 , an embodiment of the present application provides a telescopic stepping device, comprising:

[0035] The cylinder frame 1 includes an upper bracket 11 and a lower bracket 12, which are fixedly connected, and an accommodating space 13 is provided inside the upper bracket 11;

[0036] The step frame 2 is hinged to the lower bracket 12 via a first connecting member 22, one end of the first connecting member 22 is rotatably connected to the middle of the step frame 2, and the other end is rotatably connected to the bottom of the front end of the lower bracket 12;

[0037] The telescopic cylinder 3 is disposed inside the accommodating space 13 and is rotatably connected to the upper bracket 11;

[0038] The telescopic assembly 4 includes a second connecting member 41 and a curved arm 42. The rear end of the curved arm 42 is rotatably connected to the bottom rear end of the lower bracket 12, and its front end is rotatably connected to the middle of the second connecting member 41. The lower end of the second connecting member 41 is rotatably connected to the top rear end of the step frame 2, and its upper end is rotatably connected to the middle of the cylinder frame 1. The output shaft of the telescopic cylinder 3 is rotatably connected to the middle of the curved arm 42. The telescopic cylinder 3 drives the curved arm 42 to move, thereby driving the second connecting member 41 and the step frame 2 to move, thereby making the step device telescopic. At the same time, the telescopic cylinder 3 allows the step frame 2 to be telescoped to varying degrees to adapt to bus platforms of different heights and distances, improving applicability.

[0039] In this specific embodiment, the cylinder frame 1 and the step frame 2 are welded together by a plurality of steel frames, and are strong and durable.

[0040] Please refer to Figures 1 to 4 The upper bracket 11 is a rectangular parallelepiped frame with an opening at the bottom end. The bottom end of the upper bracket 11 is welded to the lower bracket 12, and the telescopic cylinder 3 is located in the rectangular parallelepiped frame.

[0041] Please refer to Figures 1 to 4 The lower bracket 12 includes a trapezoidal frame 121 and a rectangular frame 122. The rectangular frame 122 is welded to the bottom end of the upper bracket 11. The shorter side of the trapezoidal frame 121 is welded to the rectangular frame 122. The shorter side of the trapezoidal frame 121 is welded to the rectangular frame 122 and the length of one side is the same. The longer side of the trapezoidal frame 121 is 685 mm, and the shorter side is 220 mm. The height of the upper bracket 11 is 190 mm.

[0042] Please refer to Figures 1 to 5 The upper bracket 11 is provided with a first short articulated seat 14 for connecting the telescopic cylinder 3, and the bottom of the lower bracket 12 is provided with a second short articulated seat 15 for connecting the second connecting member 41. The first short articulated seat 14 and the second short articulated seat 15 are aligned and distributed in the horizontal direction. The bottom of the first short articulated seat 14 is welded to the upper bracket 11 and includes two articulated plates. A hinge hole is formed between the two articulated plates. The second connecting member 41 is two symmetrically arranged connecting plates. The two connecting plates of the second connecting member 41 are inserted into the hinge holes of the second short articulated seat 15 to achieve hinged connection. The length of the second connecting member 41 is 229 mm, and the distance between the two connecting plates is 44 mm.

[0043] refer to Figure 4 and Figure 5The lower bracket 12 has symmetrically disposed long hinged seats 16 at its bottom. A first connecting member 22 is pivotally connected to the long hinged seats 16, extending downwardly longer than the short hinged seats. The long hinged seats 16 also have two hinged tabs, the length of which is greater than that of the first and second short hinged seats 14. The first connecting members 22 are symmetrically located in the middle of either side of the tread frame 2 and are secured to the tread frame 2 via internal I-shaped hexagonal nuts.

[0044] refer to Figure 4 and Figure 5 A third short hinge seat 43 is fixed to the side of the step frame 2 close to the telescopic component 4. The step frame 2 is hinged to the lower end of the second connecting member 41 through the third short hinge seat 43. The two connecting pieces of the second connecting member 41 are inserted into the hinge holes of the third short hinge seat 43 to achieve hinge.

[0045] refer to Figure 4 and Figure 5 The telescopic assembly 4 further includes a third connecting member 44 , the front end of which is rotatably connected to the middle of the second connecting member 41 , and the rear end of which is rotatably connected to the front end of the curved arm 42 .

[0046] For details, please refer to Figure 4 The second connecting member 41 is provided with a first connecting hole 411, and the third connecting member 44 is rotatably connected to the second connecting member 41 through the rotating shaft 45 passing through the first connecting hole 411. The third connecting member 44 includes two connecting pieces axially connected by the rotating shaft 45. The rotating shaft 45 passes through the first connecting hole 411, and the third connecting member 44 is rotatably connected to the second connecting member 41 through the rotating shaft 45. The third connecting member 44 makes the telescopic device more flexible when telescoping.

[0047] refer to Figure 4 and Figure 5 The bent arm 42 is in a "V" shape as a whole. A second connecting hole 421 is provided at the recessed part of the bent arm 42. The output end of the telescopic cylinder 3 penetrates the second connecting hole 421 through a pin shaft 422 to realize a rotational connection with the bent arm 42. The bent arm 42 is provided with two, and the two bent arms 42 are connected by a pin shaft 422. The output shaft of the telescopic cylinder 3 is provided on the inner side of the two bent arms 42.

[0048] refer to Figure 4 and Figure 5 The step frame 2 is rectangular as a whole, and its surface is covered with a step board 21, and the material of the step board 21 is aluminum pattern plate.

[0049] refer to Figure 4The two first connecting members 22 are arranged on both outer sides of the stepping plate 21, the third connecting member 44 is connected to the outer side of the middle part of the second connecting member 41, the two bent arms 42 are connected to the outer side of the rear end of the third connecting member 44, and the output end of the telescopic cylinder 3 is arranged inside the two bent arms 42 through the pin shaft 422.

[0050] The implementation principle of the telescopic stepping device provided by the present invention is: when the telescopic stepping device needs to be used, the telescopic cylinder 3 drives the curved arm 42 to drive, the curved arm 42 drives the third connecting member 44 to move the second connecting member 41 forward, and the second connecting member 41 drives the first connecting member 22 and the step frame 2 to realize the extension and retraction of the step board 21.

[0051] In summary, the beneficial effects of the present invention are as follows:

[0052] The utility model drives the telescopic assembly 4 to move through the telescopic cylinder 3, thereby allowing the step plate 21 to achieve the purpose of free telescopic expansion and contraction, so that the step telescopic device can adapt to step platforms of different heights, improve applicability and facilitate people to get on and off the vehicle.

[0053] The above is an exemplary description of the present invention in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A telescopic stepping device, characterized in that: include: A cylinder frame (1) comprises an upper bracket (11) and a lower bracket (12), wherein the upper bracket (11) and the lower bracket (12) are fixedly connected, and an accommodating space (13) is provided inside the upper bracket (11); A step frame (2) is hinged to the lower bracket (12) via a first connecting member (22), wherein one end of the first connecting member (22) is rotatably connected to the middle of the step frame (2), and the other end thereof is rotatably connected to the bottom of the front end of the lower bracket (12); A telescopic cylinder (3) is disposed inside the accommodating space (13) and is rotatably connected to the upper bracket (11); The telescopic assembly (4) comprises a second connecting member (41) and a curved arm (42), wherein the rear end of the curved arm (42) is rotatably connected to the bottom of the rear end of the lower bracket (12), and the front end thereof is rotatably connected to the middle of the second connecting member (41), the lower end of the second connecting member (41) is rotatably connected to the top of the rear end of the step frame (2), and the upper end thereof is rotatably connected to the middle of the cylinder frame (1), and the output shaft of the telescopic cylinder (3) is rotatably connected to the middle of the curved arm (42).

2. A telescopic stepping device according to claim 1, characterized in that: The upper bracket (11) is a rectangular parallelepiped frame with an opening at the bottom end, and the bottom end of the upper bracket (11) is welded to the lower bracket (12).

3. The telescopic stepping device according to claim 1, characterized in that: The lower bracket (12) comprises a trapezoidal frame (121) and a rectangular frame (122); the rectangular frame (122) is welded to the bottom end of the upper bracket (11); the shorter side of the trapezoidal frame (121) is welded to the rectangular frame (122); the shorter side of the trapezoidal frame (121) is welded to the rectangular frame (122) and the lengths of one side are the same.

4. The telescopic stepping device according to claim 1, characterized in that: The upper bracket (11) is provided with a first short hinge seat (14) for connecting to the telescopic cylinder (3), and the bottom of the lower bracket (12) is provided with a second short hinge seat (15) for connecting to the second connecting member (41), and the first short hinge seat (14) and the second short hinge seat (15) are aligned and distributed in the horizontal direction.

5. The telescopic stepping device according to claim 4, characterized in that: A long hinge seat (16) is symmetrically provided at the bottom of the lower bracket (12), the first connecting member (22) is rotatably connected to the long hinge seat (16), and the downward extension length of the long hinge seat (16) is greater than that of the first short hinge seat (14) and the second short hinge seat (15).

6. The telescopic stepping device according to claim 1, characterized in that: A third short hinge seat (43) is fixed to the side of the step frame (2) close to the telescopic assembly (4), and the step frame (2) is hinged to the lower end of the second connecting member (41) via the third short hinge seat (43).

7. The telescopic stepping device according to claim 1, characterized in that: The telescopic assembly (4) further comprises a third connecting member (44), the front end of the third connecting member (44) being rotatably connected to the middle portion of the second connecting member (41), and the rear end of the third connecting member (44) being rotatably connected to the front end of the curved arm (42).

8. The telescopic stepping device according to claim 7, characterized in that: The second connecting member (41) is provided with a first connecting hole (411), and the third connecting member (44) is connected to the second connecting member (41) in rotation by passing through the first connecting hole (411) via a rotating shaft (45).

9. The telescopic stepping device according to claim 1, characterized in that: The bent arm (42) is in a V-shape as a whole. A second connection hole (421) is provided at a recessed portion of the bent arm (42). The output end of the telescopic cylinder (3) penetrates the second connection hole (421) via a pin shaft (422) to achieve rotational connection with the bent arm (42).

10. The telescopic stepping device according to claim 1, characterized in that: The step frame (2) is rectangular as a whole, and its surface is covered with a step plate (21).

Images