Telescopic platform step for vehicles

Abstract

The utility model discloses a kind of vehicle telescopic platform steps, comprising: main support, the both sides of the main support are provided with side support;Platform pedal, the rear end of the platform pedal is rotatably connected to the rear end of the main support, so that the platform pedal can be up and down relative to the main support movement;And telescopic pedal, the telescopic pedal is telescopically installed on the main support by the telescopic drive device, and can be driven under the telescopic drive device along the main support telescopic movement front and back.The utility model not only makes telescopic pedal when retracting can be completely housed below platform pedal, effectively save space, and in limited space, two sides of platform pedal and telescopic pedal are simultaneously realized double-side protection, effectively improve the security of step use.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts, and in particular to a telescopic platform step for vehicles. Background Technology

[0002] Electric retractable steps for vehicles are common assistive boarding devices. Their main function is to provide passengers, especially wheelchair users, with a stable stepping surface to improve the convenience and safety of getting on and off the vehicle. When folded up, the device can be used as a floor or step inside the vehicle; when unfolded, the retractable steps extend outwards to facilitate wheelchair access.

[0003] To ensure the safety of wheelchair users and comply with relevant standards, guardrails must be installed on both sides of the fixed platform and the retractable platform to prevent the wheelchair from sliding sideways. However, existing designs struggle to fully meet this requirement, mainly due to the following two constraints: First, to maintain a flat and aesthetically pleasing interior space, the fixed platform must be flush with the vehicle floor or mounting surface, making it impossible to install a noticeably raised guardrail structure on its sides; second, limited by the narrow storage space, if guardrails are added to both sides of the retractable platform, structural interference may occur during retraction, or it may prevent complete storage.

[0004] Therefore, how to achieve effective double-sided protection for both fixed platform pedals and telescopic pedals within limited installation and storage space has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0005] To address the aforementioned issues, this utility model provides a vehicle telescopic platform step that not only allows the telescopic pedal to be completely retracted under the platform pedal when retracted, effectively saving space, but also provides double-sided protection on both sides of the platform pedal and the telescopic pedal within a limited space, effectively improving the safety of step use.

[0006] The main technical solution adopted in this utility model is as follows: A vehicle-mounted telescopic platform step, comprising: The main support frame has side supports on both sides. The platform pedal is rotatably connected to the rear end of the main support, enabling the platform pedal to move up and down relative to the main support. And a telescopic pedal, which is telescopically mounted on the main body support via the telescopic drive device and can telescopically move back and forth along the main body support under the drive of the telescopic drive device; In the stowed state, the telescopic pedal is retracted and located below the platform pedal, and the top surface of the platform pedal is flush with the top surface of the side bracket. In the unfolded state, the telescopic pedal extends forward relative to the main support, while the platform pedal moves downward relative to the side support, with the front end of the platform pedal supported on the telescopic pedal.

[0007] Preferably, platform guide plates are provided on both sides of the platform pedal, and the rear end of the platform guide plate is hinged to the rear end of the main support. The telescopic pedal is provided with telescopic side plates on both sides, and the platform guide plate and the telescopic side plates are both located inside the side support. At least one set of first guide members are arranged on the outer side of the telescopic side plates along the telescopic direction, and the first guide members are supported below the platform guide plate. When the telescopic pedal extends, the telescopic side plate extends accordingly, causing the platform guide plate to rotate downwards around its hinge point, thereby driving the platform pedal to move downwards.

[0008] Preferably, the platform guide plate includes a front platform guide plate and a rear platform guide plate, the vertical height of the front platform guide plate is less than the vertical height of the rear platform guide plate, and the front platform guide plate and the rear platform guide plate are connected by a slope transition.

[0009] Preferably, the side support of the main support is provided with a guide rail groove along the telescopic direction, which cooperates with the first guide member of the telescopic side plate for guidance.

[0010] Preferably, the side support is provided with a guide groove with the opening facing downward, and the platform guide plate of the platform pedal is provided with a second guide member, which moves along the guide groove, and the shape of the guide groove is adapted to the movement trajectory of the platform pedal.

[0011] Preferably, the front end of the platform pedal is provided with a transition ramp for connecting the upper surface of the platform pedal and the upper surface of the telescopic pedal.

[0012] Beneficial effects: This utility model provides a telescopic platform step for vehicles, which has the following advantages: (1) In this utility model, the telescopic pedal is stored and supported below the platform pedal, and the inclined surface of the platform guide plate cooperates with the first guide member of the telescopic pedal for guidance. The horizontal movement of the telescopic pedal drives the platform guide plate to move up and down relative to the side support, thereby forming a guardrail structure on both sides of the platform pedal and the telescopic pedal in a limited space, which meets the safety requirements of passengers.

[0013] (2) In this utility model, the guide groove and the second guide member of the platform guide plate constrain the movement trajectory of the platform pedal. This constraint, together with the hinge point at the rear end of the platform guide plate, constitutes a parallelogram linkage mechanism, thereby ensuring that the platform pedal always maintains a parallel posture with the telescopic pedal during the entire descent process, and the movement trajectory is accurate and without jamming. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure (in its stored state).

[0015] Figure 2 This is a schematic diagram of the overall structure (fully extended). Figure 3 This is a schematic diagram of the structure of the telescopic side panel and the platform guide plate (in the stowed state). Figure 4 Schematic diagram of the structure of the telescopic side plate and the platform guide plate (extension stage I); Figure 5 Schematic diagram of the structure of the telescopic side plate and the platform guide plate (extendment stage II); Figure 6 This is a schematic diagram of the structure of the telescopic side plate and the platform guide plate (fully extended state). Figure 7 This is a schematic diagram of the assembly of the side bracket in Embodiment 1; Figure 8 This is a perspective view of the hinged installation of the platform guide plate in Embodiment 1. In the figure: main support 1, side support 11, guide groove 111, guide rail groove 12, platform pedal 2, second guide component 21, transition inclined plate 22, platform guide plate 23, front platform guide plate 231, rear platform guide plate 232, inclined surface 233, connecting rod 24, telescopic pedal 3, telescopic side plate 31, first guide component 32, baffle 33. Detailed Implementation

[0016] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application are clearly and completely described below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application. Example 1:

[0017] like Figure 1-2 As shown, this embodiment discloses a vehicle telescopic platform step, including: The main support 1 has side supports 11 on both sides. Platform pedal 2, the rear end of platform pedal 2 is rotatably connected to the rear end of the main body support 1, so that platform pedal 2 can move up and down relative to the main body support 1; And a telescopic pedal 3, which is telescopically mounted on the main support 1 via the telescopic drive device and can telescopically move back and forth along the main support 1 under the drive of the telescopic drive device; In the retracted state, the telescopic pedal 3 is retracted and located below the platform pedal 2, with the top surface of the platform pedal 2 flush with the top surface of the side bracket 11; Figure 1 As shown, the top surface of the platform step 2 is basically flush with the top surface of the side support 11, with no significant drop that would affect traffic safety.

[0018] When in the unfolded state, the telescopic pedal 3 extends forward relative to the main support 1, while the platform pedal 2 moves downward relative to the side support 11 to form a side guardrail.

[0019] In this embodiment 1, the telescopic drive device can be, but is not limited to, existing drive devices that can realize the linear telescopic movement of the telescopic pedal, such as gear and rack linear transmission components, electric push rods, and linear motors.

[0020] like Figure 8 As shown, platform guide plates 23 are provided on both sides of the platform pedal 2, and the rear end of the platform guide plate 23 is hinged to the rear end of the main support 1. In this embodiment 1, the platform guide plate 23 is hinged to the rear end of the main support 1 through a connecting rod 24 (the two ends of the connecting rod 24 are respectively hinged to the platform guide plate 23 and the main support 1).

[0021] Telescopic side plates 31 are provided on both sides of the telescopic pedal 3, and the platform guide plate 23 and the telescopic side plates 31 are both located inside the side support. At least one set of first guide members 32 are arranged on the outer side of the telescopic side plates 31 along the telescopic direction. The first guide members 32 are supported below the platform guide plate 23. During the movement of the telescopic pedal 3, the bottom surface of the platform guide plate 23 is always in contact with the first guide member 32.

[0022] When the telescopic pedal 3 extends, the first guide member 32 on the telescopic side plate 31 extends accordingly, causing the platform guide plate 23 to rotate downward around its hinge point (the hinge point of the connecting rod) with the main support 1, thereby driving the platform pedal 2 to move downward relative to the side support 11.

[0023] To achieve the vertical difference in the movement of the platform guide plate, in this embodiment 1, the platform guide plate 23 includes a front platform guide plate 231 and a rear platform guide plate 232. The vertical height of the front platform guide plate 231 is less than the vertical height of the rear platform guide plate 232, and the front platform guide plate 231 and the rear platform guide plate 232 are connected by a slope 233. In this invention, the front platform guide plate 231 and the rear platform guide plate 232 can be connected in segments or integrally formed.

[0024] In this invention, the vertical height of the inclined plane is the height difference between the rising and falling of the platform pedal 2.

[0025] To ensure the smoothness of the telescopic pedal 3's telescopic movement, a guide rail groove 12 is provided on the side support 11 of the main support 1 along the telescopic direction, which cooperates with the first guide member 32 of the telescopic side plate 31 for guidance.

[0026] In this embodiment 1, a baffle 33 is also installed at the outer end of the first guide member 32 to prevent the first guide member 32 from coming out of the guide rail groove 12, thus ensuring the structural reliability of the first guide member 32 in dynamic operation in the guide rail groove 12.

[0027] To ensure that platform pedal 2 remains parallel to telescopic pedal 3 during its up-and-down movement, such as Figure 7 As shown, in this embodiment 1, the side support 11 is provided with a downward-facing guide groove 111, and the platform guide plate 23 of the platform pedal 2 is provided with a second guide member 21. The shape of the guide groove 111 is adapted to the movement trajectory of the platform pedal 2. At this time, the platform guide plate 23, the side support 11, the hinged connecting rod 24, and the guide groove 111 form a parallelogram-like structure, ensuring that the platform guide plate 23 moves up and down parallel to the telescopic pedal 3 under the constraint of the guide groove 111.

[0028] To ensure a smooth transition and safe use for wheelchair passengers across the height difference between the platform pedal 2 and the telescopic pedal 3, in this embodiment 1, a transition ramp 22 is provided at the front end of the platform pedal 2. This transition ramp is used to smoothly connect the upper surface of the platform pedal 2 and the upper surface of the telescopic pedal 3, forming a continuous transition ramp.

[0029] The working principle of this utility model is as follows: When stored, such as Figure 1 and Figure 3As shown, the telescopic drive device is in the retracted position, and the telescopic pedal 3 is fully retracted and stored under the platform pedal 2. At this time, the platform guide plate 23 is supported on the first guide member 32 of the telescopic side plate 31. Under this support, the platform guide plate 23 drives the platform pedal 2 connected to it to rise to a position flush with the top surface of the side bracket 11, thereby achieving a flat connection with the vehicle floor. The entire step mechanism is completely hidden and does not affect the vehicle's passability.

[0030] During the extension stage I, such as Figure 4 As shown, the telescopic drive device is activated, pushing the telescopic pedal 3 forward along the guide rail groove 12. As the telescopic pedal 3 moves, the telescopic side plates 31 fixed to both sides of it move forward synchronously. During this process, the platform guide plate 23 remains supported on the first guide member 32 of the telescopic side plate 31, and the platform pedal height does not change.

[0031] During the extension stage II, as Figure 5 As shown, under the continuous pushing action of the telescopic drive device, the first guide member 32 at the tail end of the telescopic side plate 31 is in close contact with the inclined surface 233 of the platform guide plate 23. The first guide member is always in contact with the inclined surface 233. Under the action of gravity, the platform guide plate 23 rotates downward around the hinge point between it and the rear end of the main support 1. The platform guide plate 23 forms a parallelogram linkage motion through the constraint of the second guide member 21 and the guide groove 111 on the side support 11, thereby smoothly driving the platform pedal 2 to continue to move downward synchronously parallel to the telescopic pedal 3.

[0032] When fully extended (working) state, such as Figure 2 and 6 As shown, the telescopic pedal 3 reaches its maximum travel. At this point, the first guide member 32 of the telescopic side plate 31 completely disengages from the inclined surface 233 of the platform guide plate 23, and the front platform guide plate 231 is supported on the first guide member 32, with the platform guide plate 23 moving to the predetermined lowest position. At this time, the platform pedal 2 and the telescopic pedal 3 are smoothly connected by the transition inclined plate 22, forming a complete step plane. Simultaneously, the side bracket 11 and the telescopic side plate 31 respectively constitute effective guardrails on both sides of the platform pedal 2 and the telescopic pedal 3, achieving double-sided safety protection.

[0033] The entire process is guided by the contact between the inclined plane and the first guide member and the mechanical coupling between the guide groove and the second guide member, which automatically and synchronously converts the horizontal linear motion of the telescopic pedal 3 into the up and down rotation of the platform pedal 2. The structure is compact and the operation is reliable.

[0034] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A retractable platform step for vehicles, characterized in that, include: The main support frame has side supports on both sides. The platform pedal is rotatably connected to the rear end of the main support, enabling the platform pedal to move up and down relative to the main support. And a telescopic pedal, which is telescopically mounted on the main support via a telescopic drive device and can telescopically move back and forth along the main support under the drive of the telescopic drive device; In the stowed state, the telescopic pedal is retracted and located below the platform pedal, and the top surface of the platform pedal is flush with the top surface of the side bracket. In the unfolded state, the telescopic pedal extends forward relative to the main support, while the platform pedal moves downward relative to the side support, with the front end of the platform pedal supported on the telescopic pedal.

2. The vehicle telescopic platform step according to claim 1, characterized in that, Platform guide plates are provided on both sides of the platform pedal, and the rear end of the platform guide plate is hinged to the rear end of the main support. The telescopic pedal is provided with telescopic side plates on both sides, and the platform guide plate and the telescopic side plates are both located inside the side support. At least one set of first guide members are arranged on the outer side of the telescopic side plates along the telescopic direction, and the first guide members are supported below the platform guide plate. When the telescopic pedal extends, the telescopic side plate extends accordingly, causing the platform guide plate to rotate downwards around its hinge point, thereby driving the platform pedal to move downwards.

3. The vehicle telescopic platform step according to claim 2, characterized in that, The platform guide plate includes a front platform guide plate and a rear platform guide plate. The vertical height of the front platform guide plate is less than that of the rear platform guide plate, and the front platform guide plate and the rear platform guide plate are connected by a slope transition.

4. A vehicle telescopic platform step according to claim 2, characterized in that, The side support of the main support is also provided with a guide rail groove along the telescopic direction, which cooperates with the first guide member of the telescopic side plate for guidance.

5. A vehicle telescopic platform step according to claim 1, characterized in that, The side support is provided with a guide groove with an opening facing downwards, and the platform guide plate of the platform pedal is provided with a second guide member. The second guide member moves along the guide groove, and the shape of the guide groove is adapted to the movement trajectory of the platform pedal.

6. A vehicle telescopic platform step according to claim 1, characterized in that, The platform pedal has a transition ramp at its front end, which connects the upper surface of the platform pedal with the upper surface of the telescopic pedal.

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