Multifunctional stair climber

Abstract

The multifunctional stair climbing vehicle belongs to the technical field of stair climbing vehicles, and particularly relates to a multifunctional stair climbing vehicle with functions of carrying people and carrying objects. The multifunctional stair climbing vehicle is convenient to use and has multiple functions. The multifunctional stair climbing vehicle comprises a crawler-type stair climbing vehicle, and a tray is arranged at the lower end of the front side of the stair climbing vehicle. The multifunctional stair climbing vehicle is characterized in that: a telescopic plate capable of stretching in the front-rear direction is arranged above the tray, a seat fixing assembly is arranged on the telescopic plate, and a supporting universal wheel is arranged below the end of the telescopic plate.

Description

Technical Field

[0001] This utility model belongs to the technical field of stair climbing vehicles, specifically relating to a multi-functional stair climbing vehicle that can carry both people and goods. Background Technology

[0002] With the deepening of population aging and the diversification of residents' living environments, stair climbers are widely used in scenarios such as household moving, daily travel and assistive movement.

[0003] Existing stair-climbing vehicles generally have the following shortcomings: On the one hand, most existing stair-climbing vehicles only have the function of climbing stairs or moving on flat ground. The seat structure is usually fixed and it is difficult to disassemble or replace according to different usage needs. When it is necessary to move larger items such as refrigerators, washing machines, and furniture, it cannot be flexibly converted, resulting in low utilization.

[0004] On the other hand, existing stair climbing vehicles typically do not have adjustable seat back angles when traveling on flat ground, resulting in poor comfort for passengers during extended periods of use. This is especially true for the elderly or people with mobility issues, as it can easily cause fatigue and negatively impact the actual user experience.

[0005] In addition, existing stair-climbing vehicles do not adequately consider both passenger and cargo carrying functions, lack a reasonable load-bearing and support structure, make it difficult to achieve multi-functional switching while ensuring safety, and are also inconvenient to carry personal belongings or daily necessities during daily travel.

[0006] Therefore, it is necessary to provide a multi-functional stair climber that is structurally sound, versatile in function, can carry both people and goods, and can improve riding comfort, in order to meet the needs of daily family use and various practical scenarios. Utility Model Content

[0007] This utility model addresses the above-mentioned problems by providing a convenient and versatile stair-climbing vehicle.

[0008] The present invention adopts the following technical solution: the present invention includes a tracked stair-climbing vehicle, and a tray is provided at the lower front end of the stair-climbing vehicle. The present invention is characterized in that: a telescopic plate that can extend and retract in the front and rear directions is provided above the tray, and a seat fixing assembly is provided on the telescopic plate; a supporting caster wheel is provided at the lower end of the telescopic plate.

[0009] As a preferred embodiment of this utility model, it also includes a folding chair, wherein the bottom of the folding chair is a double crossbeam support rod structure; the seat fixing assembly includes a clamping member that is hinged to the telescopic plate at one end, the clamping member is provided with a pressure groove in the middle that cooperates with the support rod, the other end of the clamping member is provided with a notch, and the telescopic plate is provided with a wing nut assembly that cooperates with the notch.

[0010] Furthermore, the wing nut assembly includes a screw rod, the end of which is hinged to an elongated hole in the telescopic plate, and a wing nut is provided on the screw rod; the screw rod engages with the notch of the clamping member, and the wing nut is tightened on the screw rod, which can press and fix the clamping member between the wing nut and the screw rod, thereby fixing the support rod at the bottom of the folding chair.

[0011] As another preferred embodiment of this utility model, the tray is provided with a slide rail, and the bottom of the telescopic plate is provided with a guide wheel that cooperates with the slide rail.

[0012] Furthermore, the slide is a groove-shaped slide, and a top limiting edge is provided at the opening of the groove-shaped slide to prevent the guide wheel from falling off from above.

[0013] As a third preferred embodiment of this utility model, a telescopic limiting mechanism is provided between the tray and the telescopic plate.

[0014] Furthermore, the limiting mechanism includes multiple limiting grooves disposed on both sides of the telescopic plate; a swing rod is hinged to the tray, and when the swing rod corresponds to the limiting groove, the swing rod can swing into the limiting groove; a locking knob is disposed on the swing rod by means of a thread.

[0015] Furthermore, the limiting mechanism includes a swing frame, which is connected to a hinge frame at the bottom of the tray. A tension spring is provided between the middle of the swing frame and the bottom of the tray, and a pin is provided between the tension spring and the hinge frame. The tray has a through hole that mates with the pin. The telescopic plate has multiple limiting holes corresponding to the pin.

[0016] Furthermore, the swing frame is equipped with a foot pedal.

[0017] As a fourth preferred embodiment of this utility model, the bottom support point of the universal wheel is flush with the bottom support point of the walking wheel of the stair climber.

[0018] As a fifth preferred embodiment of this utility model, the tray is provided with an anti-detachment hook; the bottom of the telescopic plate is provided with an anti-detachment block corresponding to the anti-detachment hook.

[0019] The beneficial effects of this utility model are as follows: 1. It realizes flexible switching between carrying people and carrying goods, and improves the utilization rate of the whole vehicle: This utility model sets a telescopic plate that can be extended and retracted in the front and rear directions on the pallet, and sets a seat fixing component on the telescopic plate, so that the seat can be quickly installed or removed; after the seat is removed, the pallet and telescopic plate can be directly used to carry goods, so that the same stair climber can be used for both carrying people and carrying goods, which significantly expands the application scenarios and improves the comprehensive utilization rate of the equipment.

[0020] 2. The seat fixing structure is reliable and easy to install and remove, and the operation is simple: The seat fixing method adopts the combination of clamping parts, clamping grooves and wing nuts to reliably clamp and fix the double crossbeam support rod at the bottom of the folding chair; the seat can be installed and removed by simply turning the wing nuts without tools, which is convenient and reliable, and suitable for daily family use.

[0021] 3. Adjusting the seat back angle by moving the telescopic plate forward improves seating comfort: This utility model changes the overall position of the seat by extending and retracting the telescopic plate relative to the tray, thereby creating a gap between the seat back and the rear of the stair climber, allowing the backrest to tilt backward. Different extension positions can be selected according to usage needs, improving seating comfort, especially suitable for the elderly or long-term use scenarios.

[0022] 4. Stable guidance during telescopic movement, avoiding the risk of deviation and detachment: By setting a slide on the pallet, setting a guide wheel that cooperates with the slide at the bottom of the telescopic plate, and setting a top limiting edge at the opening of the slide, a reliable guiding and limiting function can be provided during the forward and backward movement of the telescopic plate, preventing the telescopic plate from deviating or the guide wheel from coming off, and ensuring the stability and safety of the structure operation.

[0023] 5. Multi-level limit and locking structure, controllable and safe telescopic position: By setting a telescopic limit mechanism, the telescopic plate can be reliably limited and locked at different telescopic positions; regardless of whether the structure of limit groove and swing rod is used or pin and limit hole is used, it can prevent the telescopic plate from sliding accidentally during use and ensure safety when carrying people or goods.

[0024] 6. Effective support in telescopic state to prevent vehicle imbalance: Support casters are installed below the end of the telescopic platform and are kept flush with the bottom support points of the stair climber's wheels. When the telescopic platform moves forward, the support casters can contact the ground, providing effective support for the telescopic platform and the seats or goods on it, thereby preventing the vehicle from tilting or becoming unstable due to the forward shift of the center of gravity.

[0025] 7. Anti-detachment structure to further improve safety: By setting anti-detachment hooks on the pallet and corresponding anti-detachment blocks at the bottom of the telescopic plate, the telescopic plate is doubly restrained under normal use, effectively preventing the telescopic plate from accidentally detaching from the pallet under extreme working conditions or misoperation, thus improving the safety and reliability of the entire vehicle structure. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model.

[0027] Figure 2 yes Figure 1 Enlarged view of part A.

[0028] Figure 3 This is a side view of the present invention.

[0029] Figure 4 yes Figure 3 BB cross-sectional view.

[0030] Figure 5 This is a schematic diagram of the structure of the telescopic plate of this utility model after it is extended.

[0031] Figure 6 This is a schematic diagram of the structure of this utility model after the telescopic plate is removed.

[0032] Figure 7 yes Figure 6 Enlarged view of part C.

[0033] Figure 8 This is a schematic diagram of another embodiment of the telescopic limiting mechanism between the pallet and the telescopic plate.

[0034] Figure 9 yes Figure 8 Enlarged view of part D.

[0035] Figure 10 This is a schematic diagram of the structure of the anti-detachment clip and the anti-detachment hook working together.

[0036] In the attached diagram, 1 is a stair-climbing vehicle, 2 is a folding chair, 3 is a tray, 4 is a traveling wheel, 5 is a support caster wheel, 6 is a telescopic plate, 7 is a seat fixing assembly, 8 is a telescopic limiting mechanism, 9 is a clamping component, 10 is a screw, 11 is a wing nut, 12 is a pressure groove, 13 is a notch, 14 is a support rod, 15 is a swing rod, 16 is a locking knob, 17 is a limiting groove, 18 is an anti-detachment hook, 19 is an anti-detachment block, 20 is a tension spring, 21 is a foot pedal, 22 is a grooved slide, 23 is a guide wheel, 24 is a top limiting edge, 25 is a pin, 26 is a limiting hole, 27 is a hinge frame, and 28 is a swing frame. Detailed Implementation

[0037] This utility model includes a tracked stair-climbing vehicle 1. A tray 3 is provided at the lower front end of the stair-climbing vehicle 1. A telescopic plate 6, capable of extending and retracting in the front-rear direction, is provided above the tray 3. A seat fixing assembly 7 is provided on the telescopic plate 6. Casters 5 are provided at the lower end of the telescopic plate 6. By providing the telescopic plate 6 above the tray 3, the seat position can be adjusted relative to the main body of the stair-climbing vehicle 1, providing a basic structure for subsequent seat removal, seating posture adjustment, and cargo-carrying functions. The seat fixing assembly 7 is placed on the telescopic plate 6, creating an adjustable and detachable connection between the seat and the stair-climbing vehicle 1, improving the overall functional expandability and applicability of the vehicle. Users can pull or retract the telescopic plate 6 as needed, moving it forward or backward relative to the tray 3. When carrying passengers, a seat is installed on the telescopic plate 6; when carrying cargo, the seat is removed from the telescopic plate 6, and the tray 3 and telescopic plate 6 are used directly to carry the goods.

[0038] The system also includes a folding chair 2, whose bottom features a double-beam support rod 14 structure. The seat fixing assembly 7 includes a clamping member 9 hinged at one end to a telescopic plate 6, which is rotatably connected to the telescopic plate 6 via a pivot. The clamping member 9 has a groove 12 in the middle that mates with the support rod 14, and a notch 13 at the other end. A wing nut assembly mates with the notch 13 is provided on the telescopic plate 6. The folding chair 2, with its double-beam support rod 14 structure, is structurally stable and easily secured by the clamping member 9. The clamping member 9 and the wing nut assembly enable quick installation and removal of the seat, reducing operational steps and lowering the barrier to entry. Items can also be placed under the folding chair 2 for convenient use. The double-beam support rod 14 at the bottom of the folding chair 2 is placed within the groove 12 of the clamping member 9. The screw 10 swings into the notch 13, and the wing nut 11 is rotated to make the clamping member 9 swing around the hinge end and clamp the support rod 14, thus completing the seat fixing. Loosening the wing nut 11 in the opposite direction will release the clamping member 9 and allow the folding chair 2 to be removed.

[0039] The wing nut assembly includes a screw 10, the end of which is hinged to an elongated hole in the telescopic plate 6. A wing nut 11 is mounted on the screw 10. The screw 10 engages with the notch 13 of the clamping member 9, and the wing nut 11 is tightened on the screw 10, thus clamping and fixing the clamping member 9 between the wing nut 11 and the screw 10, thereby securing the support rod 14 at the bottom of the folding chair 2. The end of the screw 10 is positioned within the elongated hole of the telescopic plate 6, allowing the clamping member 9 to have a certain range of motion during locking and unlocking, enhancing assembly tolerance. Manual locking is achieved through the wing nut 11, requiring no tools and suitable for frequent disassembly and assembly scenarios. Users can directly tighten or loosen the wing nut 11 manually to lock or release the clamping member 9.

[0040] The tray 3 is equipped with a slide rail, and the bottom of the telescopic plate 6 is equipped with guide wheels 23 that cooperate with the slide rail. The cooperation between the slide rail and the guide wheels 23 ensures smooth operation of the telescopic plate 6 during its forward and backward extension, preventing jamming or deviation. This reduces extension resistance and improves the smoothness and controllability of the extension operation. When the user pushes or pulls the telescopic plate 6, the guide wheels 23 roll along the slide rail, enabling the telescopic plate 6 to move linearly forward and backward.

[0041] The slide is a groove-shaped slide 22, and a top limiting edge 24 is provided at the opening of the groove-shaped slide 22 to prevent the guide wheel 23 from dislodging from the sliding surface. The top limiting edge 24 covers and restricts the guide wheel 23, preventing the guide wheel 23 from dislodging from the slide when subjected to force or misoperation, thereby improving structural safety. During the forward or backward movement of the telescopic plate 6, the guide wheel 23 is always confined within the groove-shaped slide 22, preventing the telescopic plate 6 from being accidentally lifted or derailed.

[0042] A telescopic limiting mechanism 8 is provided between the tray 3 and the telescopic plate 6. The limiting mechanism includes multiple limiting grooves 17 on both sides of the telescopic plate 6; a swing rod 15 is hinged to the tray 3, and when the swing rod 15 corresponds to a limiting groove 17, the swing rod 15 can swing into the limiting groove 17; a locking knob 16 is threaded onto the swing rod 15. Multiple limiting grooves 17 enable multi-position positioning of the telescopic plate 6, allowing for graded adjustment of the telescopic length. The cooperation between the swing rod 15 and the locking knob 16 ensures reliable locking of the telescopic position, preventing the telescopic plate 6 from sliding on its own. Move the telescopic plate 6 to the target position. Swing the swing rod 15 to allow it to enter the corresponding limiting groove 17. Tighten the locking knob 16 to fix the position of the swing rod 15, locking the telescopic plate 6 and the tray 3.

[0043] The limiting mechanism includes a swing frame 28, which is connected to a hinge frame 27 at the bottom of the tray 3. A tension spring 20 is provided between the middle of the swing frame 28 and the bottom of the tray 3, and a pin 25 is provided between the tension spring 20 and the hinge frame 27. The tray 3 has a through hole that mates with the pin 25. The telescopic plate 6 has multiple limiting holes 26 corresponding to the pin 25. The engagement of the pin 25 with the limiting holes 26 achieves a clearly defined and reliable locking method. The tension spring 20 provides an automatic return tendency for the pin 25, reducing the risk of misoperation. Stepping on or pulling the swing frame 28 disengages the pin 25 from the limiting hole 26. Moving the telescopic plate 6 to a new limiting position. Releasing the swing frame 28 causes the pin 25 to automatically insert into the corresponding limiting hole 26 under the action of the tension spring 20.

[0044] The swing frame 28 is equipped with a foot pedal 21. The limiting mechanism is operated by foot, avoiding the need for the user to bend over or operate by hand, thus improving convenience and safety. When the user steps on the foot pedal 21, the swing frame 28 rotates, thereby driving the pin 25 to disengage from the limiting hole 26. When the user releases the foot pedal 21, the tension spring 20 controls the pin 25 to insert into the limiting hole 26.

[0045] The bottom support point of the swivel caster 5 is flush with the bottom support point of the walking wheel 4 of the stair climber 1. When the telescopic platform 6 moves forward, the swivel caster 5 contacts the ground, providing additional support for the telescopic platform 6 and its load, preventing the entire vehicle from tilting forward and becoming unbalanced. During the forward movement of the telescopic platform 6, the swivel caster 5 naturally contacts the ground and provides rolling support.

[0046] The tray 3 is equipped with an anti-detachment hook 18; the bottom of the telescopic plate 6 is equipped with an anti-detachment block 19 corresponding to the anti-detachment hook 18. The anti-detachment hook 18 and the anti-detachment block 19 form a double constraint, further preventing accidental separation of the telescopic plate 6 from the tray 3 and improving the overall vehicle safety. Within the normal telescopic range, the anti-detachment block 19 always mutually restricts the anti-detachment hook 18. The anti-detachment relationship can only be released and the telescopic plate 6 removed under specific disassembly operations.

[0047] The tracked stair-climbing vehicle 1 is existing technology that is available on the market.

[0048] It is understood that the above specific description of this utility model is only used to illustrate this utility model and is not limited to the technical solutions described in the embodiments of this utility model. Those skilled in the art should understand that modifications or equivalent substitutions can still be made to this utility model to achieve the same technical effect; as long as the use needs are met, they are all within the protection scope of this utility model.

Claims

1. A multi-functional stair-climbing vehicle, comprising a tracked stair-climbing vehicle (1), wherein a tray (3) is provided at the lower front side of the stair-climbing vehicle (1), characterized in that: The tray (3) is provided with a telescopic plate (6) that can extend and retract in the front and back directions. A seat fixing assembly (7) is provided on the telescopic plate (6). A support caster (5) is provided below the end of the telescopic plate (6). A slide is provided on the tray (3). A guide wheel (23) that cooperates with the slide is provided at the bottom of the telescopic plate (6). The slide is a groove-shaped slide (22). A top limiting edge (24) is provided at the opening of the groove-shaped slide (22) to prevent the guide wheel (23) from sliding out from above. A telescopic limiting mechanism (8) is provided between the tray (3) and the telescopic plate (6). The limiting mechanism includes multiple limiting grooves (17) provided on both sides of the telescopic plate (6). A swing rod (15) is hinged on the tray (3). When the swing rod (15) corresponds to the limiting groove (17), the swing rod (15) can swing into the limiting groove (17). A locking knob (16) is provided on the swing rod (15) by thread.

2. The multi-functional stair-climbing vehicle according to claim 1, characterized in that: It also includes a folding chair (2), the bottom of which is a double crossbeam support rod (14) structure; the seat fixing assembly (7) includes a clamping member (9) that is hinged to the telescopic plate (6) at one end, a pressure groove (12) that cooperates with the support rod (14) is provided in the middle of the clamping member (9), and a notch (13) is provided at the other end of the clamping member (9), and a wing nut assembly that cooperates with the notch (13) is provided on the telescopic plate (6).

3. The multi-functional stair-climbing vehicle according to claim 2, characterized in that: The wing nut assembly includes a screw (10), the end of which is hinged to a long hole on the telescopic plate (6), and a wing nut (11) is provided on the screw (10); the screw (10) cooperates with the notch (13) of the clamping member (9), and the wing nut (11) is tightened on the screw (10), which can press and fix the clamping member (9) between the wing nut (11) and the screw (10), thereby fixing the support rod (14) at the bottom of the folding chair (2).

4. The multi-functional stair-climbing vehicle according to claim 1, characterized in that: The limiting mechanism includes a swing frame (28), which is connected to a hinge frame (27) at the bottom of the tray (3). A tension spring (20) is provided between the middle of the swing frame (28) and the bottom of the tray (3). A pin (25) is provided between the tension spring (20) and the hinge frame (27). A through hole that cooperates with the pin (25) is provided on the tray (3). A plurality of limiting holes (26) corresponding to the pin (25) are provided on the telescopic plate (6).

5. The multi-functional stair-climbing vehicle according to claim 4, characterized in that: The swing frame (28) is equipped with a foot pedal (21).

6. The multi-functional stair-climbing vehicle according to claim 1, characterized in that: The tray (3) is provided with an anti-detachment hook (18); the bottom of the telescopic plate (6) is provided with an anti-detachment block (19) corresponding to the anti-detachment hook (18).

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