TWM624670U - Base structure of electric wheelchair - Google Patents

Abstract

A base structure of an electric wheelchair is suitable for installing a seat, and includes a shell unit, a drive unit, and a wheel unit. The housing unit includes a base, an upper cover, and a replaceable gasket assembly disposed between the base and the upper cover. The upper cover, the gasket assembly and the base jointly define a chamber. The drive unit is installed in the chamber of the housing unit. The runner unit is arranged on the housing unit and can be driven by the driving unit. By replacing the gasket components with different thicknesses, the volume of the chamber can be adjusted according to the battery capacity of the drive unit, so it can be suitable for installing drive units with different battery capacities, which is beneficial to the unification of specifications at the manufacturing end and reduces the production cost.

Description

The base structure of the electric wheelchair

The new model relates to a mobile device, in particular to a base structure of an electric wheelchair.

A common electric wheelchair includes a seat, a base, a drive unit, an operator, and multiple casters. The seat can be used by the user. The base defines an accommodating groove for the drive unit to be arranged. The operator is mounted on the seat and is electrically connected to the driving unit, so the user can operate the operator to make the driving unit drive the casters.

However, the base of the electric wheelchair is of a fixed size, so the accommodating slot for accommodating the drive unit is also fixed, which is not suitable for drive units with different battery capacities, and several different bases must be opened during the manufacturing process Only with production lines of different specifications can drive units corresponding to different battery capacities be produced.

Therefore, the purpose of the present invention is to provide a base structure for an electric wheelchair that can at least overcome the shortcomings of the prior art.

Therefore, the base structure of the novel electric wheelchair is suitable for installing a seat, and includes a housing unit, a driving unit, and a runner unit.

The housing unit includes a base, an upper cover, and a replaceable gasket assembly disposed between the base and the upper cover. The upper cover, the gasket assembly, and the base jointly define an accommodation chamber. The spacer assembly with different thickness can adjust the volume of the chamber. The drive unit is installed in the chamber of the housing unit. The runner unit is arranged on the housing unit and can be driven by the driving unit.

The effect of the new type is: by replacing the gasket components with different thicknesses, the volume of the chamber can be adjusted according to the battery capacity of the drive unit, so it can be suitable for installing drive units with different battery capacities, which is beneficial to the specification of the manufacturer unification, reducing production costs.

1: Shell unit

101: Room

102: Mounting port

11: Base

111: Chassis Department

112: side wall

12: upper cover

13: Gasket assembly

131: Gasket

14: Cover

2: drive unit

21: Battery Department

22: Electronic Control Department

3: runner unit

31: Front Wheel

32: rear wheel

33: Auxiliary wheel

5: Seat

Other features and functions of the present invention will be clearly presented in the embodiments with reference to the drawings, wherein: Figure 1 is a perspective view of an embodiment of the base structure of the new electric wheelchair; A perspective exploded view of the drive unit and a cover plate; FIG. 3 is an exploded perspective view of this embodiment, illustrating that the drive unit can be installed from one of the installation openings; FIG. 4 is a schematic diagram of the use of this embodiment for a seat installation; Fig. 5 is an exploded perspective view similar to Fig. 2, illustrating another variation of a gasket assembly; Fig. 6 is an exploded perspective view similar to Fig. 5, illustrating that a housing unit includes a plurality of the gasket assemblies stacked on top of each other ; and FIG. 7 is an exploded perspective view of this embodiment, illustrating that the drive unit can be installed from another mounting port.

Referring to FIGS. 1 to 4 , an embodiment of the base structure of the novel electric wheelchair is suitable for installing a seat 5 , and includes a housing unit 1 , a driving unit 2 , and a wheel unit 3 .

The housing unit 1 includes a base 11 , an upper cover 12 , a replaceable gasket assembly 13 disposed between the base 11 and the upper cover 12 , and a cover plate 14 . The base 11 has a bottom plate portion 111 and two side wall portions 112 extending upward from the bottom plate portion 111 . The upper side of the upper cover 12 is used for installing the seat 5 and preventing external liquid from splashing into the base 11 . The gasket assembly 13 has a U-shape and is clamped against the gasket 131 between the upper sides of the side wall portions 112 and the upper cover 12 . The upper cover 12 , the spacers 131 and the base 11 together define a chamber 101 and two installation ports 102 which are connected to the chamber 101 in opposite directions. The cover plate 14 covers one of the installation openings 102 .

The driving unit 2 is installed in the chamber 101 and includes a battery part 21 and an electric control part 22 .

The wheel unit 3 includes two front wheels 31 , two rear wheels 32 and two auxiliary wheels 33 pivotally connected to the base 11 . In this embodiment, the drive unit 2 is loaded into the chamber 101 from the installation openings 102 near the rear wheels 32 , and the electronic control part 22 faces backwards and is exposed to the housing unit 1 . The front wheels 31 can be driven by the driving unit 2 , and the cover plate 14 covers the installation openings 102 near the front wheels 31 . Since the electronic control part 22 controls the output power of the battery part 21 to drive the runner unit 3 is a known technique, and is not the focus of the present invention, it will not be repeated here. The auxiliary wheels 33 are respectively disposed on the front side of the front wheels 31, so as to improve the stability of the whole structure.

When using this embodiment, the user can select the battery part 21 with different battery capacities according to the user's own use environment and mileage. The larger the capacity of the battery part 21, the larger the volume, and the spacers 131 of appropriate thickness can be selected. , and clamp the gaskets 131 between the base 11 and the upper cover 12, the arrangement of the gaskets 131 is, for example, but not limited to, a plurality of screws passing through the gaskets 131 and locking them with The side wall portions 112 . Next, install the upper cover 12 on the upper side of the spacers 131 , put the driving unit 2 into the chamber 101 through one of the installation openings 102 , and then cover the cover 14 on one of the parts away from the electric control part 22 . Finally, the seat 5 is assembled to the upper cover 12 to complete the installation, and the assembly process is very convenient.

In the above embodiment, the gasket assembly 13 has a U-shaped gasket The sheet 131, the U-shaped gasket 131 is integrally formed, and has a beautiful visual effect. In other embodiments of the present invention, referring to FIG. 5 , the gasket assembly 13 may also have two elongated gaskets sandwiched between the upper sides of the side wall portions 112 and the upper cover 12 respectively. 131. Compared with the U-shaped spacer 131, the elongated spacer 131 has a smaller volume and is lighter in storage.

In the above embodiment, the housing unit 1 includes only one gasket assembly 13 , but in other embodiments of the present invention, referring to FIG. 6 , the housing unit 1 may also include a plurality of gaskets stacked on top of each other For the component 13, the aforementioned U-shaped spacer 131 and the elongated spacer 131 can also be mixed and matched.

In the above embodiment, the spacer 131 is elongated or U-shaped, but in other embodiments of the present invention, the spacer 131 may also be annular.

In the above-mentioned embodiment, the driving unit 2 is installed from the installation opening 102 near the rear wheels 32 , the driving unit 2 can drive the front wheels 31 , and the cover plate 14 covers the front wheels 31 near the front wheels 31 . However, in other embodiments of the present invention, referring to FIG. 7 , the drive unit 2 can also be installed from the installation opening 102 near the front wheels 31 . At this time, the drive unit 2 is changed to drive the For the rear wheels 32 , the cover plate 14 covers the installation openings 102 near the rear wheels 32 . Therefore, the drive unit 2 can be installed into the housing unit 1 from any of the installation openings 102 , and has greater flexibility in installation.

To sum up, the structure of the base 11 of the new electric wheelchair can be replaced by the replacement tool. The spacer assembly 13 with different thicknesses can adjust the volume of the chamber 101 according to the battery capacity of the drive unit 2. Users can install the drive units 2 with different battery capacities according to their own use environment and mileage. The specifications at the manufacturing end are unified and the production cost is reduced, so it can indeed achieve the purpose of this new model.

However, the above are only examples of the present invention, which should not limit the scope of the present invention. Any simple equivalent changes and modifications made in accordance with the scope of the patent application for this new model and the contents of the patent specification are still within the scope of the present invention. within the scope of this new patent.

1: Shell unit

11: Base

12: upper cover

13: Gasket assembly

14: Cover

2: drive unit

3: runner unit

31: Front Wheel

32: rear wheel

33: Auxiliary wheel

Claims (8)

A base structure of an electric wheelchair, suitable for a seat installation, and comprising: A housing unit includes a base, an upper cover, and at least one replaceable gasket assembly disposed between the base and the upper cover, the upper cover, the gasket assembly and the base jointly define a chamber, by The volume of the chamber can be adjusted by replacing the gasket assembly with different thicknesses; a drive unit mounted in the chamber of the housing unit; and A runner unit is arranged on the housing unit and can be driven by the driving unit. The base structure of an electric wheelchair according to claim 1, wherein the base has a chassis portion and two sidewall portions extending upward from the chassis portion, and the at least one gasket component has two sidewalls clamped against the sidewalls respectively. An elongated gasket between the upper side of the part and the upper cover. The base structure of an electric wheelchair as claimed in claim 1, wherein the base has a chassis portion and two sidewall portions extending upward from the chassis portion, and the at least one gasket component has a spacer clamped against the sidewall portions. A U-shaped gasket between the upper side and the upper cover. The base structure of an electric wheelchair according to claim 2 or 3, wherein the housing unit includes a plurality of spacer assemblies that are stacked on top of each other. The base structure of an electric wheelchair according to claim 2 or 3, wherein the chassis portion, the side wall portions, the gasket assembly and the upper cover define two opposite installation ports communicating with the chamber. The base structure of an electric wheelchair according to claim 5, wherein the drive unit can be installed into the housing unit from any one of the installation openings. The base structure of an electric wheelchair according to claim 2 or 3, wherein the upper side of the upper cover is used for the seat to be installed. The base structure of an electric wheelchair according to claim 6, wherein the wheel unit includes two front wheels and two rear wheels pivotally connected to the base, and the front wheels or the rear wheels can be driven by the drive unit .

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