Wheelchair with modularized hub assembly

Abstract

The utility model provides a wheelchair with a modularized hub assembly, which comprises a frame main body, and the frame main body comprises a bottom beam, a side beam and a vertical beam; the number of the bottom beams, the number of the side beams and the number of the vertical beams are all two, the vertical beams are welded to the tops of the bottom beams, and the side beams are welded between the vertical beams and the bottom beams. The two groups of bottom beams, side beams and vertical beams are fixed through a connecting rod mechanism; a seat is mounted between the top of the measuring instrument and the vertical beam through a bolt; a push handle is mounted at the top of the vertical beam; handrails are welded between the side beams and the vertical beams; the front ends of the side beams are rotationally connected with pedals; universal wheels are movably mounted at the bottoms of one ends of the side beams; a first connecting hole and a second connecting hole are respectively formed in the outer side wall of the vertical beam and the outer side wall of the bottom beam and are respectively used for mounting a first-type hub and a second-type hub; the first-type hub and the second-type hub are connected with the first connecting hole and the second connecting hole through connecting assemblies.

Description

Technical Field

[0001] The utility model relates to the field of wheelchairs, in particular to a wheelchair with a modular hub assembly. Background Art

[0002] With the increasing trend of population aging, wheelchairs, as an important tool for assisting mobility, have been widely used in various fields such as medical care, rehabilitation, home use, and travel. Traditional wheelchair designs often focus on achieving basic functions, such as supporting the body and providing mobility, but have many shortcomings in terms of flexibility, adaptability, and user experience. In particular, the requirements for wheelchair passability, stability, portability, and comfort vary significantly in different usage scenarios, and traditional wheelchairs are difficult to meet these diverse needs.

[0003] As society's demand for wheelchairs grows more diverse, different user groups have different performance requirements for wheelchairs in different usage scenarios. For example, in a home environment, a wheelchair may need to have high flexibility and portability to facilitate movement and storage in narrow spaces. In outdoor environments or when long-distance travel is required, the wheelchair's maneuverability and stability are more important, which usually requires a larger wheel hub size. However, the single wheel hub size design of traditional wheelchairs cannot meet these diverse needs, limiting the wheelchair's scope of application.

[0004] Secondly, for wheelchair manufacturers and service providers, in order to meet the needs of different users, they usually need to produce wheelchairs of multiple different sizes, which not only increases production costs and inventory pressure, but may also lead to resource waste and environmental problems. At the same time, for users, if they need to replace wheels of different sizes to adapt to different usage scenarios, they often need to purchase a new wheelchair or perform complex modifications, which increases the economic burden and inconvenience of use. Utility Model Content

[0005] In order to solve the problems of poor versatility and limited scope of application of wheelchairs in the prior art, the utility model provides a wheelchair with a modular wheel hub assembly;

[0006] The present invention provides a wheelchair with a modular hub assembly adopting the following technical solutions:

[0007] The wheelchair has a modular wheel hub assembly, comprising a frame body, the frame body comprising a bottom beam, a side beam and a vertical beam; the bottom beam, the side beam and the vertical beam each have two groups, the top of the bottom beam is welded with a vertical beam, and the side beam is welded between the vertical beam and the bottom beam; the two groups of the bottom beam, the side beam and the vertical beam are fixed by a connecting rod mechanism; a seat is installed between the top of the measuring and the vertical beam by bolts; a push handle is installed on the top of the vertical beam; an armrest is welded between the side beam and the vertical beam; a pedal is rotatably connected to the front end of the side beam; a universal wheel is movably installed at the bottom of one end of the side beam; the outer side wall of the vertical beam and the outer side wall of the bottom beam are respectively provided with a first connecting hole and a second connecting hole, respectively, for installing a type one wheel hub and a type two wheel hub; the installed type one wheel hub and the type two wheel hub are connected to the first connecting hole and the second connecting hole through a connecting assembly;

[0008] Furthermore, the wheel diameter of the first type wheel hub is larger than that of the second type wheel hub; a hand wheel for autonomous driving is mounted on the outer side wall of the first type wheel hub via bolts;

[0009] Furthermore, the horizontal position of the first connecting hole is higher than that of the second connecting hole; after the first type of hub is installed, the lowest point of the first type of hub is flush with the lowest point of the universal wheel; after the second type of hub is installed, the lowest point of the second type of hub is flush with the lowest point of the universal wheel;

[0010] Furthermore, the connection assembly includes a first snap-fit ​​plate, a fixing column, a second snap-fit ​​plate, a fixing hole, a gasket, and a fixing bolt; the outer wall of the first snap-fit ​​plate is rotatably connected to the rotating shaft of the first or second wheel hub via a rotational connection; one end of the fixing column is integrally formed on the inner wall of the first snap-fit ​​plate; the second snap-fit ​​plate can be mutually snapped with the first snap-fit ​​plate to wrap the vertical beam or the bottom beam, and a fixing hole is provided inside for the fixing column to pass through; the other end of the fixing column passes through the first connection hole or the second connection hole, and is threadedly connected to a fixing bolt through the fixing hole; a gasket is also provided between the fixing bolt and the second snap-fit ​​plate;

[0011] Furthermore, the gasket is made of rubber or resin;

[0012] Furthermore, the butt joint surfaces of the first and second snap-fit ​​plates are both inlaid with magnetic sheets that attract each other for pre-fixation after snap-fitting;

[0013] Furthermore, the outer side wall of the bottom beam is movably connected with a handbrake, and the handbrake can be slidably adjusted on the outer side wall of the bottom beam, so that the user can stop the vehicle in time when encountering a situation.

[0014] In summary, the beneficial effects of the present invention are as follows:

[0015] The utility model optimizes the frame structure design so that the same frame can be compatible with wheels of different sizes. By arranging standardized first connecting holes, second connecting holes and connecting components at specific positions on the frame, users can easily replace wheels of different sizes according to actual needs, thereby realizing flexible conversion of wheelchairs in different usage scenarios.

[0016] This utility model can not only effectively solve the problems of poor versatility and limited scope of application of traditional wheelchairs, and improve the flexibility and adaptability of wheelchairs; it can also reduce the production costs of manufacturers and the economic burden of users, and promote the popularization and sustainable development of wheelchairs; at the same time, this solution also has important environmental protection significance by reducing resource waste and waste generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a bottom view schematic diagram of the overall structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the connection between the frame body and the wheel hub of the utility model;

[0020] Figure 4 This is a schematic structural diagram of a wheel hub of the utility model;

[0021] Figure 5 This is a schematic diagram of the overall structure of the connection assembly of the utility model;

[0022] Figure 6 This is a schematic diagram of the overall structure of the second-type wheel hub replacement of the utility model;

[0023] Figure 7 This is a bottom view schematic diagram of the overall structure of the second-type wheel hub replaced by the present invention.

[0024] As shown in the figure: 1- bottom beam, 11- side beam, 12- vertical beam, 2- connecting rod mechanism, 3- footrest, 31- seat, 32- armrest, 33- push handle, 35- handbrake, 36- universal wheel, 4- type one wheel hub, 41- hand push wheel, 5- type two wheel hub, 6- first connecting hole, 62- second connecting hole, 7- connecting assembly, 71- fastening plate 1, 72- fixing column, 73- fastening plate 2, 74- fixing hole, 75- gasket, 76- fixing bolt, 8- magnetic sheet. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-7 The utility model is further described in detail:

[0026] The present invention discloses a wheelchair with a modular hub assembly. Figure 1-7As shown, the vehicle frame includes a main body, which includes a bottom beam 1, a side beam 11, and a vertical beam 12; the bottom beam 1, the side beam 11, and the vertical beam 12 are each in two groups, the top of the bottom beam 1 is welded with the vertical beam 12, and the side beam 11 is welded between the vertical beam 12 and the bottom beam 1; the two groups of bottom beams 1, side beams 11, and vertical beams 12 are fixed by a connecting rod mechanism 2; a seat 31 is installed between the top of the measuring rod and the vertical beam 12 by bolts; a push handle 33 is installed on the top of the vertical beam 12; an armrest 32 is welded between the side beam 11 and the vertical beam 12; the front end of the side beam 11 A pedal 3 is rotatably connected; a universal wheel 36 is movably mounted at the bottom of one end of the side beam 11; a first connecting hole 6 and a second connecting hole 62 are respectively formed on the outer wall of the vertical beam 12 and the outer wall of the bottom beam 1, for mounting a type 1 wheel hub 4 and a type 2 wheel hub 5, respectively; both the type 1 wheel hub 4 and the type 2 wheel hub 5 are connected to the first connecting hole 6 and the second connecting hole 62 via a connecting assembly 7; the wheel diameter of the type 1 wheel hub 4 is larger than that of the type 2 wheel hub 5; a hand wheel 41 for the user to independently drive is mounted on the outer wall of the type 1 wheel hub 4 via bolts;

[0027] In this embodiment, the bottom beam 1 serves as a supporting foundation, onto which are welded vertical beams 12 and side beams 11. The three are reinforced by a connecting rod mechanism 2 to ensure the stability and reliability of the overall structure of the wheelchair. The seat 31 is bolted to the top of the vertical beam 12. The push handle 33 is designed to facilitate the user's pushing of the wheelchair, and the armrests 32 provide additional support for the occupant. The pedals 3 and universal wheels 36 meet the occupant's foot support and the wheelchair's flexible steering requirements, respectively.

[0028] In addition, this embodiment is mainly connected to the first connecting hole 6 and the second connecting hole 62 on the frame body through the connecting assembly 7. This design allows the user to replace the wheel hubs of different sizes according to actual needs to adapt to different usage scenarios. The wheel hub 4 of type I has a larger wheel diameter and is suitable for occasions requiring better passability or stability. The wheel hub 5 of type II has a smaller wheel diameter and is more convenient for operation in narrow spaces or to improve flexibility, and is suitable for human-assisted transportation. In addition, the wheel hub 4 of type I is also equipped with a hand wheel 41 to achieve autonomous driving function.

[0029] like Figure 1-7 As shown, the horizontal position of the first connecting hole 6 is higher than that of the second connecting hole 62; after the first type hub 4 is installed in the first connecting hole 6, the lowest point of the first type hub 4 is flush with the lowest point of the universal wheel 36; after the second type hub 5 is installed in the second connecting hole 62, the lowest point of the second type hub 5 is flush with the lowest point of the universal wheel 36; in this embodiment, the position of the connecting holes ensures that no matter which type of hub is installed, its lowest point can be flush with the lowest point of the universal wheel 36, thereby maintaining the stability of the wheelchair during travel, ensuring the travel stability and safety of the wheelchair;

[0030] like Figure 5As shown, the connection assembly 7 includes a snap plate 71, a fixing column 72, a snap plate 2 73, a fixing hole 74, a gasket 75, and a fixing bolt 76; the outer wall of the snap plate 1 71 is rotatably connected to the rotating shaft of the type 1 hub 4 or the type 2 hub 5 through a rotation connection; the inner wall of the snap plate 1 71 is integrally formed with one end of the fixing column 72; the snap plate 2 73 can be snapped together with the snap plate 1 71 to wrap the vertical beam 12 or the bottom beam 1, and a fixing hole 74 is opened inside for the fixing column 72 to pass through; the other end of the fixing column 72 passes through the first connecting hole 6 or the second connecting hole 6 The connecting hole 62 is connected to the fixing hole 74 by a fixing bolt 76 through a thread; a gasket 75 is further provided between the fixing bolt 76 and the second snap plate 73; in this embodiment, the first snap plate 71 is connected to the wheel hub shaft, and then the vertical beam 12 or the bottom beam 1 is wrapped by the mutual snapping of the first snap plate 71 and the second snap plate 73, and fastened by the fixing column 72 and the fixing bolt 76; the introduction of the gasket 75 further enhances the stability of the connection; the connecting assembly 7 has a compact structure and perfect functions, ensuring a firm connection between the wheel hub and the frame;

[0031] like Figure 5 As shown, the gasket 75 is made of either rubber or resin. In this embodiment, the rubber material has good elasticity and sealing properties, which can effectively prevent the connection from loosening. The resin material has high hardness and wear resistance, which can extend the service life of the connection component 7. Regardless of the material, the purpose is to improve the stability and durability of the connection.

[0032] like Figure 5 As shown, the mating surfaces of the first and second snap-fit ​​plates 71 and 73 are both inlaid with mutually adsorbed magnetic sheets 8 for pre-fixation after snap-fitting. In this embodiment, the pre-fixation function after snap-fitting is achieved, that is, before the fixing bolts 76 are fully tightened, the adsorption force of the magnetic sheets 8 can preliminarily fix the positions of the first and second snap-fit ​​plates 71 and 73, preventing them from sliding or misalignment during installation. This design not only improves the convenience of installation, but also ensures the accuracy and stability of installation.

[0033] like Figure 1 As shown, the outer wall of the bottom beam 1 is movably connected to a handbrake 35, and the handbrake 35 can be slid and adjusted on the outer wall of the bottom beam 1, so that the user can stop the car in time when encountering a situation. The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. The various components mentioned in the present invention are common technologies in the existing field. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A wheelchair with a modular hub assembly, comprising a frame body, characterized in that: The frame body comprises a bottom beam (1), a side beam (11), and a vertical beam (12); the bottom beam (1), the side beam (11), and the vertical beam (12) are each in two groups, the vertical beam (12) is welded to the top of the bottom beam (1), and the side beam (11) is welded between the vertical beam (12) and the bottom beam (1); the two groups of the bottom beam (1), the side beam (11), and the vertical beam (12) are fixed via a connecting rod mechanism (2); a seat (31) is installed between the top of the side beam and the vertical beam (12) via bolts; a push handle (33) is installed at the top of the vertical beam (12); A handrail (32) is welded between the side beam (11) and the vertical beam (12); the front end of the side beam (11) is rotatably connected to a pedal (3); a universal wheel (36) is movably installed at the bottom of one end of the side beam (11); the outer side wall of the vertical beam (12) and the outer side wall of the bottom beam (1) are respectively provided with a first connecting hole (6) and a second connecting hole (62), which are respectively used to install a type 1 wheel hub (4) and a type 2 wheel hub (5); the installed type 1 wheel hub (4) and the type 2 wheel hub (5) are both connected to the first connecting hole (6) and the second connecting hole (62) through a connecting assembly (7).

2. A wheelchair with a modular hub assembly according to claim 1, characterized in that The wheel diameter of the first-type wheel hub (4) is larger than the wheel diameter of the second-type wheel hub (5); and a hand wheel (41) for autonomous driving is installed on the outer side wall of the first-type wheel hub (4) via bolts.

3. A wheelchair with a modular hub assembly according to claim 2, characterized in that The horizontal position of the first connecting hole (6) is higher than that of the second connecting hole (62); after the first-type wheel hub (4) is installed in the first connecting hole (6), the lowest point of the first-type wheel hub (4) is flush with the lowest point of the universal wheel (36); after the second-type wheel hub (5) is installed in the second connecting hole (62), the lowest point of the second-type wheel hub (5) is flush with the lowest point of the universal wheel (36).

4. A wheelchair with a modular hub assembly according to claim 3, characterized in that The connecting assembly (7) comprises a first snap-fit ​​plate (71), a fixing column (72), a second snap-fit ​​plate (73), a fixing hole (74), a gasket (75), and a fixing bolt (76); the outer side wall of the first snap-fit ​​plate (71) is rotatably connected to the rotating shaft of the first type wheel hub (4) or the second type wheel hub (5) through a rotatable connection; the inner side wall of the first snap-fit ​​plate (71) is integrally formed with one end of the fixing column (72); the second snap-fit ​​plate (73) can be mutually snapped with the first snap-fit ​​plate (71) to wrap the vertical beam (12) or the bottom beam (1), and a fixing hole (74) for the fixing column (72) to pass through is opened inside; the other end of the fixing column (72) passes through the first connecting hole (6) or the second connecting hole (62), and passes through the fixing hole (74) to be connected to the fixing bolt (76) by threading; a gasket (75) is also provided between the fixing bolt (76) and the second snap-fit ​​plate (73).

5. A wheelchair with a modular hub assembly according to claim 4, characterized in that The gasket (75) is made of a rubber material or a resin material.

6. A wheelchair with a modular hub assembly according to claim 4, characterized in that The butting surfaces of the first snap-fit ​​plate (71) and the second snap-fit ​​plate (73) are both inlaid with mutually adsorbed magnetic sheets (8) for pre-fixation after snap-fitting.

7. A wheelchair with a modular hub assembly according to claim 3, characterized in that The outer side wall of the bottom beam (1) is movably connected to a handbrake (35), and the handbrake (35) can be slidably adjusted on the outer side wall of the bottom beam (1), so that the user can stop the vehicle in time when encountering a situation.

Images