FOLDING ALL-TERRAIN ELECTRIC WHEELCHAIR

Abstract

The invention relates to a folding all-terrain electric wheelchair comprising: A triangular support structure (1) provided with two rear wheels (2), traction motors (3) joined to the rear wheels (2), at least two batteries (4), a chair formed by a removable seat (5) and a folding back (8), folding armrests (6) joined to the back (8), a remote or joystick (7), a hinged joint (10) arranged on the free end of the support structure (1) and which enables the assembly and fastening of either an urban wheel (11) or an all-terrain wheel (12), an anti-tipping assembly (15) fastened to the bearing structure (1) and suspension means (16) of the seat. A chair is achieved which is able to be used with maximum comfort on rough terrain, in urban areas, to be folded, to be transported very easily, and has symmetric and asymmetric suspension means, and a very light final weight.

Claims

1. A folding all-terrain electric wheelchair comprising: a triangular support structure; two rear wheels coupled to the support structure; traction motors joined to the rear wheels; at least two batteries to power the motors and that are supported by the support structure; a chair formed by a removable seat and a folding back; folding armrests joined to the back; a remote or joystick arranged in a folding armrest; a hinged joint arranged on the free end of the support structure and which enables the assembly and fastening of either an urban wheel or an all-terrain wheel; an anti-tipping assembly fastened to the bearing structure; suspension means of the seat.

2. The folding all-terrain electric wheelchair according to claim 1, wherein the all-terrain wheel (12) is joined to the chair by means of a bearing structure (14) which on one of the ends thereof is joined to the hinged joint (10) and on the other end to a fork (13) wherein the all-terrain wheel (12) is arranged.

3. The folding all-terrain electric wheelchair according to claim 1, wherein the seat (5) has fasteners (17) and quick-release locking pins (18).

4. The folding all-terrain electric wheelchair according to claim 1, wherein on the front end or vertex of the support structure (1) a footrest (19) is arranged.

5. The folding all-terrain electric wheelchair according to claim 1, wherein on the free end of the bearing structure (14) of the all-terrain wheel (12), a pin (14.1) is arranged which acts to fasten the previous assembly on the support structure (1).

6. The folding all-terrain electric wheelchair to claim 1, wherein the shock-absorbing assembly (16) has shock absorbers (20).

7. The folding all-terrain electric wheelchair to claim 1, wherein the anti-tipping assembly (15) comprises a structure (15.4) on which three wheels are mounted, a first wheel (15.1), a second wheel (15.2) and a third wheel (15.3), and it also has a shock-absorbing spring (21).

8. The folding all-terrain electric wheelchair according to claim 1, wherein a push bar (9) is arranged on the folding back (8).

9. The folding all-terrain electric wheelchair according to claim 1, wherein the wheelchair has an accessory for the movement (22) which has a configuration in a double-T shape and which has wheels (23) on each end.

10. The folding all-terrain electric wheelchair according to claim 1, wherein the wheel chair has a pulling accessory consisting of a drawbar (24) that can be coupled on the end of the bearing structure (14) joined by means of an anti-tipping joint (24.1) which has two degrees of freedom in the joint thereof with the bearing structure (14).

Description

BRIEF DESCRIPTION OF DRAWINGS

[0028] As a complement to the present description, and for the purpose of helping to make the features of the invention more readily understandable, in accordance with a preferred practical exemplary embodiment thereof, said description is accompanied by a set of drawings constituting an integral part of the same, which by way of illustration and not limitation represent the following.

[0029] In FIG. 1 we can see an isometric representation of the chair in its entirety.

[0030] In FIG. 2 we can see an isometric representation of a rear view of the chair.

[0031] In FIG. 3 we can see a representation of the isometric support structure.

[0032] In FIG. 4 three different views of the all-terrain wheel and the bearing structure thereof are shown.

[0033] In FIG. 5 the suspension means of the chair are shown.

[0034] In FIG. 6 the different views of the seat and back of the chair are shown.

[0035] In FIG. 7 the anti-tipping assembly is shown.

[0036] In FIG. 8 front and side views of the chairs prepared for urban and all-terrain use are shown.

[0037] In FIG. 9 the folded chair is shown in side and plan view for urban use.

[0038] In FIG. 10 the folded chair is shown in side and plan view for urban use arranged on the movement accessory.

[0039] In FIG. 11 a detail of the movement accessory is shown.

[0040] In FIG. 12 the drawbar is shown.

[0041] In FIGS. 13 and 14 details of the suspension and traction are shown.

PREFERRED EMBODIMENT OF THE INVENTION

[0042] With reference to the figures, below a preferred embodiment of the invention proposed is described.

[0043] In FIG. 1 we can see that the all-terrain electric chair comprises: [0044] A triangular support structure (1) [0045] Two rear wheels (2) coupled to the support structure (1) [0046] Traction motors (3) joined to the rear wheels (2) [0047] At least two batteries (4) to power the motors and that are supported by the support structure (1) [0048] A chair formed by a removable seat (5) and a folding back (8) [0049] Folding armrests (6) joined to the back (8) [0050] A remote or joystick (7) arranged in a folding armrest (6) [0051] A hinged joint (10) arranged on the free end of the support structure (1) and which enables the assembly and fastening of either an urban wheel (11) or an all-terrain wheel (12).

[0052] Optionally, a push bar (9) can be arranged on the folding back (8).

[0053] The all-terrain wheel (12) is joined to the chair by means of a bearing structure (14) which on one of the ends thereof is joined to the hinged joint (10) and on the other end to a fork (13) wherein the all-terrain wheel (12) is mounted.

[0054] In FIG. 2 it is worth noting how the chair has an anti-tipping assembly (15) fastened to the bearing structure (1) and how, furthermore, the seat has suspension means (16).

[0055] Also, the seat (5) has fasteners (17) and quick-release locking pins (18) which enable the fastening of the seat to be released with respect to the support structure.

[0056] In FIG. 3 the support structure (1) is shown which in a possible embodiment has a core in a T-shaped configuration made entirely out of extruded square tubular aluminum and high-strength sheets of the 6061 T6 type and complementary elements made of 304 stainless steel.

[0057] On the front end or vertex of the support structure (1) a footrest (19) is arranged, with the aim of achieving better distribution of the pressure exerted by the feet on the terrain.

[0058] In FIG. 4 it is worth noting how on the free end of the bearing structure (14) of the all-terrain wheel (12), a pin (14.1) is arranged which acts to fasten the previous assembly on the support structure (1).

[0059] In FIG. 5 it is seen that the shock-absorbing assembly has shock absorbers (20), which make the use of the chair more comfortable especially when operating as an all-terrain chair.

[0060] In FIG. 7 the anti-tipping assembly (15) comprises a structure (15.4) on which three wheels are mounted, a first wheel (15.1), a second wheel (15.2) and a third wheel (15.3), and it also has a shock-absorbing spring (21).

[0061] Furthermore, said anti-tipping assembly (15) tilts with respect to the support structure (1) and acts to move the assembly of the seat when it is folded.

[0062] In FIG. 8 the chair is shown both in the configuration thereof to be used as an urban chair and as an all-terrain chair, where the urban wheel (11) has been moved for the all-terrain wheel (12).

[0063] In FIGS. 9 and 10 the folded chair is seen in two views, being distinguished by the fact that in FIG. 10 it is arranged on a movement accessory. In FIG. 9 the anti-tipping assembly (15) is not tilted such that the entire chair, once folded, is supported by the wheels (15.1) and (15.2).

[0064] In FIG. 11 the accessory or cart for the movement (22) is shown, wherein the chair is fastened and acts to move the entire chair once folded and it has a configuration in a double-T shape and has wheels (23) on each end.

[0065] In FIG. 12 a drawbar (24) is shown that is able to be coupled on the end of the bearing structure (14) joined by means of an anti-tipping joint (24.1) which has two degrees of freedom in the joint thereof with the bearing structure (14) and which prevents the chair pulled from the drawbar (24) from being tipped over.

[0066] In FIGS. 13 and 14 details are shown of the suspension and traction motor (3) described previously.

[0067] Having thus adequately described the nature of the present invention, as well as how to put it into practice, it must be noted that, within its essential nature, the invention may be carried out according to other embodiments differing in detail from that set out by way of example, which the protection sought would equally cover, provided that the fundamental principle thereof is not altered, changed or modified.