Wheel and multifunctional transportation stair-climbing vehicle

Abstract

The utility model relates to a wheel and a multifunctional transport stair-climbing vehicle, which comprise a first wheel carrier, a second wheel carrier, a plurality of second wheel carriers, a plurality of first forks arranged on the first wheel carrier at intervals along the circumferential direction, a rolling wheel arranged at the outer end part of each first fork, a second fork arranged between two adjacent first forks, and a fixed threaded sleeve arranged at the outer end part of each second fork; the second wheel carrier is arranged on the periphery of the first wheel carrier, a roller groove is formed in the middle of the second wheel carrier, a plurality of rollers abut against the inner groove wall of the roller groove, the second wheel carrier is quadrilateral, each side of the second wheel carrier is in S-shaped radian transition, and a moving wheel is arranged at the intersection of every two adjacent sides. Compared with the prior art, the wheel provided by the utility model can climb stairs flexibly, can adapt to terrains to raise the gravity center of the frame, and improves the stair climbing stability of the transport vehicle and the stair climbing safety through the design that the stair climbing wheel is attached to steps.

Description

Technical Field

[0001] This utility model relates to the field of cargo transportation, specifically to a wheel and a multi-functional stair-climbing transport vehicle. Background Technology

[0002] Stair-climbing carts are used for transporting goods. They can move up and down stairs, making them ideal for moving heavy items in buildings without elevators. Placing goods on the cart facilitates convenient transport. This is especially useful for middle-aged and elderly people who frequently use stair-climbing carts for grocery shopping, grocery shopping, and carrying luggage.

[0003] However, current stair-climbing vehicles on the market have relatively limited functions, lacking safety features, emergency call capabilities, and passenger seating. Furthermore, existing stair-climbing vehicle designs, based on a star-shaped wheel structure, often encounter obstacles during stair climbing due to the axle being lower than the step surface. Current methods compensate for this with electric drive systems, but due to variations in cargo weight, electric power cannot fully adapt to these differences. Therefore, a multi-functional stair-climbing transport vehicle is needed. Utility Model Content

[0004] The purpose of this utility model is to overcome at least one of the defects of the prior art and provide a wheel and a multi-functional transport stair-climbing vehicle.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] One of the objectives of this utility model is to provide a wheel, comprising:

[0007] The first wheel frame has multiple first branches spaced apart along the circumference. Each first branch has a roller at its outer end. A second branch is provided between two adjacent first branches. A fixed threaded sleeve is provided at the outer end of the second branch.

[0008] A second wheel frame is arranged around the first wheel frame. The second wheel frame has a roller groove in the middle. Multiple rollers abut against the inner wall of the roller groove. The second wheel frame is quadrilateral with an S-shaped arc transition on each side. A movable wheel is arranged at the intersection of adjacent sides.

[0009] Furthermore, the inner shell of the second wheel frame is removed.

[0010] Furthermore, there are three first branches, which are evenly distributed along the circumference of the first wheel frame.

[0011] Furthermore, an inwardly concave arc portion is provided at the intersection of two adjacent sides, and a third connecting rod is provided in the arc portion, which is rotatably connected to the moving wheel through the third connecting rod.

[0012] The second objective of this utility model is to provide a multi-functional stair-climbing transport vehicle, including...

[0013] The main frame, including

[0014] A pair of spaced-apart first uprights;

[0015] A movable handle is provided at one end of the pair of first uprights;

[0016] The frame axle is located at the other end of the pair of first uprights;

[0017] And a pair of second columns disposed inside the pair of first columns, the second column having a pin at one end near the moving handle and the pin being inserted into the opposite first column, the other end of the second column having an insert and being sleeved on the frame axle through the insert;

[0018] A storage mechanism is provided on the main body of the vehicle frame;

[0019] And a pair of wheels as described above, the pair of wheels being connected to the pair of first uprights respectively via the fixed threaded sleeves to enable the movement and climbing of the stair-climbing vehicle.

[0020] Furthermore, a movable handle is provided at the upper end of the frame body, and an emergency call device is provided below the movable handle.

[0021] Furthermore, the storage mechanism includes a storage box assembly and a storage bag assembly arranged sequentially from top to bottom on the main body of the vehicle frame.

[0022] Furthermore, the storage rack assembly includes:

[0023] The storage box is located between the pair of second pillars. A pair of first fastening rods and a pair of second fastening rods are mirror-arranged on both sides of the storage box. A first track groove is provided on the side of the second pillar near the first fastening rod, and the first fastening rod slides in the first track groove.

[0024] A pair of fourth connecting rods are respectively disposed on both sides of the storage box. The fourth connecting rods are provided with a second track groove and the second fastening rod slides in the second track groove. An insertion rod is provided on the side of the fourth connecting rod near the second column. The two ends of the insertion rod are respectively inserted into the second column and the first column. A first annular retainer is provided on the end of the fourth connecting rod away from the insertion rod. The first annular retainer can be fastened to the rod body of the pin to realize the retraction of the storage box.

[0025] Furthermore, the storage bag assembly includes:

[0026] Storage bag placement stand;

[0027] Storage bag fixing rods are installed on the storage bag placement platform;

[0028] And a pair of storage bag telescopic links, the storage bag telescopic links including a first link and a second link rotatably connected to each other, the other end of the first link being rotatably connected to the second column, and the other end of the second link being rotatably connected to the storage bag fixing rod.

[0029] Furthermore, the vehicle frame body is also equipped with a folding seat assembly, which includes:

[0030] A first seat frame, the first seat frame includes a pair of spaced-apart first support rods, a first connecting rod with both ends passing through the middle of the pair of first support rods, and a second connecting rod with both ends connected to the ends of the pair of first support rods;

[0031] The second seat frame includes a pair of spaced-apart second support rods and a third connecting rod whose two ends are respectively connected to the ends of the pair of second support rods. The upper half of the pair of second support rods is provided with a sliding area along the direction of the rod body, and the two ends of the first connecting rod extend into the pair of sliding areas respectively.

[0032] A pair of stops are respectively disposed on the outside of the pair of second support rods and on the side of the sliding area away from the ends of the pair of second support rods. When the first connecting rod slides to the side of the sliding area away from the ends of the pair of second support rods, the pair of stops engage with the two ends of the first connecting rod to unfold the folding seat.

[0033] Compared with the prior art, the present invention has the following advantages:

[0034] (1) This utility model provides a wheel that can flexibly climb stairs, adapt to the terrain to raise the center of gravity of the vehicle frame, and improve the stability of the transport vehicle when climbing stairs by designing the climbing wheel to fit the steps, while increasing the safety of climbing stairs.

[0035] (2) This utility model provides a multi-functional stair climbing vehicle, which increases the comfort and safety of users. The stretchable seat can provide seating space anytime and anywhere, providing convenience for people with mobility issues, shopping at the supermarket, waiting to pick up their children from school, etc., and the use of a flexible seat cushion improves comfort.

[0036] (3) This utility model provides a multi-functional transport stair climbing vehicle, which is also equipped with an emergency call device to prevent situations where the mobile phone cannot be retrieved and cannot be called for help in an emergency. At the same time, it uploads location information to quickly locate the position, thus saving more time and providing safety protection. Attached Figure Description

[0037] Figure 1 This is a three-dimensional schematic diagram of the wheel in the embodiment;

[0038] Figure 2 This is a front view of the wheel in the embodiment;

[0039] Figure 3 This is a cross-sectional view of the wheel in the embodiment;

[0040] Figure 4 This is a schematic diagram illustrating the retraction of the overall structure of the multi-functional transport stair-climbing vehicle in the embodiment.

[0041] Figure 5 for Figure 4 View from AA direction;

[0042] Figure 6 This is a schematic diagram showing the overall structure of the multi-functional transport stair-climbing vehicle in the embodiment.

[0043] Figure 7 This is a schematic diagram of the storage rack assembly in the embodiment;

[0044] Figure 8 This is a schematic diagram of the folding seat assembly in the embodiment;

[0045] Figure 9 for Figure 8 A magnified view of a portion of region A in the middle;

[0046] Figure 10 This is a schematic diagram of the climbing phase of the stair-climbing wheels in the multi-functional stair-climbing transport vehicle in the embodiment.

[0047] Figure 11 for Figure 10 A magnified view of a portion of region B in the middle;

[0048] Figure 12 This is a schematic diagram showing the state of the stair-climbing wheels in the multi-functional stair-climbing vehicle during the completion of a stair-climbing stage in the embodiment.

[0049] Figure 13 for Figure 12 A magnified view of a portion of region C in the middle;

[0050] The diagram shows the following labels: 1-Frame body; 11-Storage box; 111-First fastening rod; 112-Second fastening rod; 12-Storage bag placement platform; 121-First upright; 122-Second upright; 123-Insertion; 13-Fourth connecting rod; 131-First ring retainer; 132-First track groove; 133-Second track groove; 134-Pin; 14-Storage bag fixing rod; 141-First connecting rod; 142-Second connecting rod; 17-Frame axle; 171-Moving handle; 181-Insertion rod; 2-Emergency call device 21-SOS button; 22-Speaker; 23-Location transmitter; 24-Bluetooth module; 25-Main control unit; 26-Power management module; 27-Data transmission line; 31-Second connecting rod; 32-Second support rod; 33-First support rod; 331-First connecting rod; 34-Stop; 36-Third connecting rod; 4-Wheel; 41-Second wheel frame; 42-First wheel frame; 421-Roller; 422-Fixing threaded sleeve; 423-Roller groove; 424-First fork; 425-Second fork; 44-Moving wheel. Detailed Implementation

[0051] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. These embodiments are implemented based on the technical solution of the present invention, providing detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0052] Example

[0053] This embodiment provides a wheel; see the specific structure below. Figure 1-3 ,include:

[0054] The first wheel frame 42 has a plurality of first branches 424 spaced apart along the circumference. Each first branch 424 has a roller 421 at its outer end. A second branch 425 is provided between two adjacent first branches 424. A fixed threaded sleeve 422 is provided at the outer end of the second branch 425.

[0055] A second wheel frame 41 is arranged around the first wheel frame 42. The second wheel frame 41 has a roller groove 423 in the middle. Multiple rollers 421 abut against the inner wall of the roller groove 423. The second wheel frame 41 is quadrilateral with an S-shaped arc transition on each side. A movable wheel 44 is arranged at the intersection of adjacent sides.

[0056] In this embodiment, the second wheel frame 41 has internal shells. By shelling the protruding areas on each side, stress can be distributed more evenly across the structure, thereby improving durability. The four shelled areas are symmetrical about the center, which helps maintain the balance and stability of the structure. This symmetrical design can prevent uneven deformation of the structure under stress, effectively reducing overall weight, material costs, and optimizing the structural strength and rigidity of components.

[0057] In this embodiment, there are three first forks 424, which are evenly distributed around the first wheel frame 42; an inwardly concave arc portion 441 is provided at the intersection of two adjacent sides, and a third connecting rod 442 is provided on the arc portion 441, which is rotatably connected to the moving wheel 44 through the third connecting rod.

[0058] This embodiment also provides a multi-functional stair-climbing transport vehicle, the specific structure of which can be found in [see details]. Figure 4-12 Including the main frame 1, including

[0059] A pair of spaced-apart first uprights 121;

[0060] A movable handle 171 is provided at one end of the pair of first uprights 121;

[0061] The frame axle 17 is located at the other end of the pair of first uprights 121;

[0062] And a pair of second columns 122 disposed inside the pair of first columns 121, wherein a pin 134 is provided at one end of the second column 122 near the moving handle 171 and the pin 134 is inserted into the opposite first column 121, and an insert 123 is provided at the other end of the second column 122 and is sleeved on the frame axle 17 through the insert 123; wherein the insert 123 is ring-shaped or buckle-shaped;

[0063] A storage mechanism is provided on the frame body 1;

[0064] And a pair of wheels 4 as described above, the pair of wheels 4 being connected to the pair of first uprights 121 respectively via the fixed threaded sleeves 422, so as to realize the movement and climbing of the stair-climbing vehicle.

[0065] In this embodiment, a movable handle 171 is provided at the upper end of the frame body 1.

[0066] In this embodiment, the storage mechanism includes a storage box assembly and a storage bag assembly arranged sequentially from top to bottom on the frame body 1.

[0067] In this embodiment, the storage rack assembly includes:

[0068] The storage box 11 is located between the pair of second columns 122. A pair of first fastening rods 111 and a pair of second fastening rods 112 are mirrored on both sides of the storage box 11. A first track groove 132 is provided on the side of the second column 122 near the first fastening rod 111. The first fastening rod 111 slides in the first track groove 132.

[0069] A pair of fourth connecting rods 13 are respectively disposed on both sides of the storage box 11. The fourth connecting rod 13 is provided with a second track groove 133 and the second fastening rod 112 slides in the second track groove 133. An insertion rod 181 is provided on the side of the fourth connecting rod 13 near the second column 122. The two ends of the insertion rod 181 are respectively inserted into the second column 122 and the first column 121. A first annular retainer 131 is provided on the end of the fourth connecting rod 13 away from the insertion rod 181. The first annular retainer 131 can be fastened to the rod body of the pin 134 to realize the retraction of the storage box 11.

[0070] In this embodiment, the storage bag assembly includes:

[0071] Storage bag placement table 12;

[0072] A storage bag fixing rod 14 is installed on the storage bag placement platform 12;

[0073] And a pair of storage bag telescopic links, the storage bag telescopic links including a first link 141 and a second link 142 rotatably connected to each other, the other end of the first link 141 being rotatably connected to the second column 122, and the other end of the second link 142 being rotatably connected to the storage bag fixing rod 14.

[0074] In this embodiment, a folding seat assembly is further provided on the vehicle frame body 1, the folding seat assembly comprising:

[0075] The first seat frame includes a pair of spaced-apart first support rods 33, a first connecting rod 331 with both ends passing through the middle of the pair of first support rods 33, and a second connecting rod 31 with both ends connected to the ends of the pair of first support rods 33.

[0076] The second seat frame includes a pair of spaced-apart second support rods 32 and a third connecting rod 36 whose two ends are respectively connected to the ends of the pair of second support rods 32. The upper half of the pair of second support rods 32 is provided with a sliding area along the direction of the rod body. The two ends of the first connecting rod 331 extend into the pair of sliding areas.

[0077] A pair of stops 34 are respectively disposed on the outside of the pair of second support rods 32 and on the side of the sliding area away from the ends of the pair of second support rods 32. When the first connecting rod 331 slides to the side of the sliding area away from the ends of the pair of second support rods 32, the pair of stops 34 engage with the two ends of the first connecting rod 331 to unfold the folding seat.

[0078] When the user is stationary or moving, each wheel 4 uses two ground-contacting moving wheels 44 for movement. The first wheel frame 42 is located in the center of the second wheel frame 41. The first wheel frame 42 passes through the axle of the roller 421. The three rollers 421 are evenly distributed on the circumference of the roller groove 423, supporting the rotation of the first wheel frame 42. The fixed threaded sleeve 422 is fixedly connected to the first wheel frame 42, and the third fastening rod 43 is connected to the fixed threaded sleeve 422 and hinged to the frame body 1. When climbing stairs, the concave surface of the second wheel frame 41 first contacts the corner of the step, and then pulls the frame body 1 to shift the center of gravity of the vehicle, causing the fixed threaded sleeve 422 and the third fastening rod 43 to move along the roller groove 423. When the position is higher than the height of the step surface, the entire stair-climbing wheel 4 can complete the stair-climbing action, reducing the resistance of climbing stairs, improving the overall stability of climbing stairs, and improving the user's comfort.

[0079] Example 2

[0080] An emergency call device 2 is provided below the mobile handle 171 in this embodiment. The emergency call device includes: a call button 21, a speaker 22, a positioning transmitter 23, a Bluetooth module 24, a main control unit 25, a power management module 26, and a data transmission line 27.

[0081] Each module is physically connected via a data transmission line 27 inside the frame body 1. The Bluetooth module 24 and the main control unit 25 are soldered to the same PCB board and fixed inside the axial support plate 16 of the frame body 1. The positioning transmitter 23 is independently encapsulated in a waterproof cavity and installed below the handle 171, ensuring no metal obstruction. The data transmission line 27 runs along the transverse fixing rod 18 of the frame body 1 and is externally covered with a wear-resistant corrugated tubing.

[0082] The connection between the emergency call button 21 and the handle 171 uses a silicone sealing ring with an IP67 rating. The speaker 22's sound outlet is covered with a nano-hydrophobic membrane. Under normal conditions, only the emergency call button 21 circuit remains in standby mode. Triggering it wakes up the main control unit 25, and it automatically goes into sleep mode after 30 seconds of inactivity.

[0083] The Bluetooth control module 24 is fixed to the inner side of the axial support plate 16 of the frame body 1, with its antenna facing the outer side of the handle 171 to optimize signal strength. When the user triggers the emergency call button 21, the main control unit 25 sends an AT+CLCC command to the paired mobile phone through the Bluetooth module 24, controlling the mobile phone to automatically dial the preset emergency contact. At the same time, the GNSS positioning function of the positioning transmitter 23 is activated, and the location information is transmitted to the target terminal via Bluetooth or 4G dual-channel.

[0084] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A vehicle wheel, characterized by include: The first wheel frame (42) has a plurality of first branches (424) spaced apart in the circumferential direction. Each first branch (424) has a roller (421) at its outer end. A second branch (425) is provided between two adjacent first branches (424). A fixed threaded sleeve (422) is provided at the outer end of the second branch (425). A second wheel frame (41) is arranged around the first wheel frame (42). The second wheel frame (41) has a roller groove (423) in the middle. Multiple rollers (421) abut against the inner wall of the roller groove (423). The second wheel frame (41) is quadrilateral with an S-shaped arc transition on each side. A movable wheel (44) is provided at the intersection of adjacent sides.

2. A vehicle wheel according to claim 1, wherein The second wheel frame (41) has an internal shell.

3. A vehicle wheel according to claim 1, wherein There are three first branches (424) and they are evenly distributed around the first wheel frame (42).

4. A multi-functional transport stair climber, characterized by, include The frame body (1) includes A pair of spaced-apart first uprights (121); A movable handle (171) is provided at one end of the pair of first uprights (121). The frame axle (17) is located at the other end of the pair of first uprights (121). And a pair of second columns (122) disposed inside the pair of first columns (121), the second column (122) having a pin (134) at one end near the moving handle (171) and the pin (134) being inserted into the opposite first column (121), the other end of the second column (122) having an insert (123) and being sleeved on the frame axle (17) through the insert (123); Storage mechanism, which is mounted on the frame body (1); And a pair of wheels (4) as described in any one of claims 1-3, the pair of wheels (4) being connected to the pair of first uprights (121) respectively via the fixed threaded sleeve (422) to realize the movement and climbing of the stair climbing vehicle.

5. The multi-functional transport stair climber according to claim 4, wherein A movable handle (171) is provided at the upper end of the frame body (1), and an emergency call device (2) is provided below the movable handle (171).

6. The multi-functional transport stair climber according to claim 4, wherein The storage mechanism includes a storage box assembly and a storage bag assembly arranged sequentially from top to bottom on the frame body (1).

7. The multi-functional transport stair climber according to claim 6, wherein The storage box assembly includes: A storage box (11) is located between the pair of second columns (122). A pair of first fastening rods (111) and a pair of second fastening rods (112) are mirror-arranged on both sides of the storage box (11). A first track groove (132) is provided on the side of the second column (122) near the first fastening rod (111). The first fastening rod (111) slides in the first track groove (132). A pair of fourth connecting rods (13) are respectively disposed on both sides of the storage box (11). The fourth connecting rod (13) is provided with a second track groove (133) and the second fastening rod (112) slides in the second track groove (133). An insertion rod (181) is provided on the side of the fourth connecting rod (13) near the second column (122). The two ends of the insertion rod (181) are respectively inserted into the second column (122) and the first column (121). A first annular retainer (131) is provided on the end of the fourth connecting rod (13) away from the insertion rod (181). The first annular retainer (131) can be fastened to the rod body of the pin (134) to realize the retraction of the storage box (11).

8. The multi-functional transport stair climber according to claim 6, wherein The storage bag assembly includes: Storage bag placement stand (12); Storage bag fixing rod (14) is set on the storage bag placement platform (12); And a pair of storage bag telescopic links, the storage bag telescopic links include a first link (141) and a second link (142) rotatably connected to each other, the other end of the first link (141) is rotatably connected to the second column (122), and the other end of the second link (142) is rotatably connected to the storage bag fixing rod (14).

9. The multi-functional transport stair climber of claim 4, wherein, The frame body (1) is also provided with a folding seat assembly, which includes: The first seat frame includes a pair of spaced-apart first support rods (33), a first connecting rod (331) with both ends passing through the middle of the pair of first support rods (33), and a second connecting rod (31) with both ends connected to the ends of the pair of first support rods (33). The second seat frame includes a pair of spaced second support rods (32) and a third connecting rod (36) whose two ends are respectively connected to the ends of the pair of second support rods (32). The upper half of the pair of second support rods (32) is provided with a sliding area along the direction of the rod body of the pair of second support rods (32). The two ends of the first connecting rod (331) extend into the pair of sliding areas respectively. A pair of stops (34) are respectively disposed on the outside of the pair of second support rods (32) and on the side of the sliding area away from the end of the pair of second support rods (32). When the first connecting rod (331) slides to the side of the sliding area away from the end of the pair of second support rods (32), the pair of stops (34) engage with the two ends of the first connecting rod (331) to unfold the folding seat.

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