ES2584477A1 - Rear electric wheel drive for wheelchairs (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Rear electric drive for wheelchairs. It consists of a walking aid for people with physical disabilities, consisting of a main chassis with one or two push-wheel drive, an anchorage chassis fixed to the wheelchair or another removable as an option, a removable battery anchored to the drive chassis and a control unit with an extendable controller to control the drive device. Its main characteristic is its small volume and low weight, as well as an easy anchoring system, and whose global allows us to maintain the aesthetic line of any manual, garter or sports wheelchair, in its transformation to a large electric wheelchair. Autonomy. (Machine-translation by Google Translate, not legally binding)

Description

REAR ELECTRIC DRIVE FOR WHEELCHAIRS

The present invention relates to a driving device with one or two electric motors (Brushless Brushless or Brushed with brushes) that is adapted by installing a fixed support to the wheelchair or another detachable that is attached to the motor, and that It facilitates a quick installation of the impeller, which is located in the lower rear part of the chassis of any wheelchair on the market. Such adaptation being thus concealed after an easy installation, since it is located (motor and battery) under the wheelchair seat and since its small dimensions are one of its characteristics, it is not easy to see the adaptation if it is not provided Express attention, since it is only easily visible from a rear view of the wheelchair and giving the user of the wheelchair a range of mobility of between 25 / 30km (depending on the battery capacity). The controller or joystick extension (depending on the version) of the control device and, like the driving device, will be concealed in the aesthetics of the wheelchair and its front, thus allowing the transformation of any normal, light or wheelchair. sporty, in a powerful and concealed electric wheelchair.

BACKGROUND OF THE INVENTION

There are some devices with similar characteristics to the present invention on the market, although it is clear that all of them have deficiencies that make using them easy, simple and efficient when we want to turn any wheelchair into an electric wheelchair, giving us autonomy of movement and keeping the aesthetics of a sports and youth wheelchair, which adapts to the user's taste and that only needs a mechanical impulse that provides autonomy and mobility to the user and that goes unnoticed if possible.

There are front impellers that help us to this end, but with the inconvenience of its size and apparatusity so it cannot be used in itself for the real transformation of a manual wheelchair to an electric one. Others are rear and although they are not very cumbersome if they are impractical, in addition to having very limited characteristics and some of them are not even controllable by the user, but are helpful to the assistant for pushing the wheelchair.

In order to avoid the similarities of the aforementioned devices and which are currently distributed in the market for this purpose, the present invention is characterized among other things by a simple and quick installation of the driving device in any wheelchair and in its lower rear part, using the pertinent adapters of anchored to the rear axle of the wheelchair and in which we will only have to hang or lift the driving device. A main arrangement of the battery in two of the configurations included in the patent, a version located under the user's seat, protecting it from bumps and rain as well as making it practically invisible from the outside and another version that will be anchored to the rear electric impeller chassis in vertical position. In both configurations it will be easy to remove the battery, thus being able to quickly change from electric wheelchair to manual and vice versa in a fast and versatile way or giving the possibility of transporting it to be able to charge it without having to depend on the use of the chair of wheels at that time. In addition, the electric impeller controlling device can be anchored by another small and invaluable support installed in the front chassis of the wheelchair, in a position to the right or left of the user and thus being able to control the driving device with both forearms or with the knees (for those users who do not suffer from paraplegia) in addition to the double rear engine version, the front controller will have a joystick that will replace the lever control device for the latter version.

DESCRIPTION OF THE INVENTION

The present invention: Rear electric impeller for wheelchairs, is composed, and according to the three different versions of configuration and utility for the disabled user, of five different parts that make up the total of the invention for the version with a single electric impeller and of which there are two versions, and four different parts that make up the total of the invention for the version with two electric impellers, providing all versions of the present invention with functionality. Being in turn fully configurable and adaptable to the characteristics and needs of each user.

It would be composed as follows:

An electric drive device for each of the three versions. Two versions with a single electric motor (Figure 1, l.e) and (Figure 4, 1.f) And another version with two electric motors (Figure 7, 1.g).

A fixed anchorage device to the chassis valid for the three different versions of electric impeller (Figure 1, l.a), or a removable anchor as a second option (Figure 28).

A removable battery, valid for all three versions (Figure 1, 1.b).

A front support with joystick controller for the version of two electric impellers (Figure 7, l.h).

A front support with controller (Figure 1, lc) to which a lever-type control knob (Figure 1, 1.d) is attached, valid for the versions of a single electric impeller (Figure 1, le) and (Figure 4, lf)

The union of each and every one of the aforementioned parts, has the purpose and as explained in the art, to transform quickly and easily, a manual wheelchair (any version) to a wheelchair of the same characteristic physical and aesthetic, but with qualities equal or superior to those of an electric wheelchair, since as stated above, the user can adapt this invention to their specific needs at all times, also keeping the pleasant aesthetics of a chair Manual, garter belt or sports wheels.

Thus, the driving device with electric motor (Figure 1, le) (Figure 4, 1.f) or (Figure 7, lg) will be connected physically and by a quick connection to a fixed anchor (Figural, la) that it will always be permanently installed in the wheelchair, or at an optional, removable and removable anchor (Figure 28) in side view and (Figure 29) in top view, which will be attached to the electric drive chassis in any of the three versions . In any case, the drive motor will be concealed by its small dimensions in the lower rear part of the wheelchair, being able to quickly anchor and disassemble or even fold (if not used) being suspended under the wheelchair and thus being able to be transported without inconvenience to the user of the wheelchair and be used at the times when required.

The battery will be in turn anchored and, like the driving device, to the anchorage device fixed to the chassis (Figure 1, the) and for any of the three versions, located under the user seat of the wheelchair, providing this way a balance of weight distributions, and at the same time, protected from blows, rain and the direct vision of people.

For the abovementioned battery anchor version, using the optional removable bracket (Figure 28) in side view and (Figure 29) in top view, it will be necessary to install an extra specific anchoring device for this purpose (Figure 30) in side view and (Figure 31) in rear view, which will be permanently anchored to the chassis of the electric drive motor (Figure 1, le) (Figure 4, lf) or (Figure 7, lg) and allow the installation of the battery vertically.

The main controller of the electric drive motor will be installed in the same chassis of the electric drive motor. This main controller is joined by a retractable spiral cable and extensible, a second control module (Figure 1, 1.c) for the version of a single drive motor (Brushed or Brushless) and which will be anchored in the front of the wheelchair. To this control module (Figure 1, l.c) a mechanical lever type device (Figure 1, l.d) will be connected to control the speed of the electric drive motor. The throttle function device (Figure 1, l.d) will transform the action by pressure with the forearm on the lever mechanism to an electrical variation that the control unit will interpret and transform into electrical voltage applied to the electric drive motor.

As an option to this lever accelerator device (Figure 1, ld), another mechanical device with the same characteristics (Figure 26) in side view and (Figure 27) in rear view can be connected in the same way and with the same functionality, and that in this case, it will be operated just like the previous version by pressure, but in this case with the knee or leg of the wheelchair user, as long as he has mobility in the lower limbs and thus obtaining the same result on the drive motor electric.

In the controller module (Figure 1, lc) we can also control several technical aspects of the drive motor, such as: see the battery charge level, control the on and / or off of the device, control the back light and / or front for the driving device, a forward and reverse selector, or an input switch to select one or another controller input by lever for the arm or leg.

For the drive motor version based on two drive motors (Figure 7, 1.g), the extensible controller module (Figure 7, lh) will be different from the one mentioned above used for the other two drive motor versions (Figure 1, 1. e) and (Figure 4, 1.t) since it will not be necessary to be controlled by a lever system, and it will be in this case, through a joystick system that will allow the individual rotation of each of the two wheels of the device impeller (Figure 7, lg) making wheelchair handling easier.

DESCRIPTION OF THE DRAWINGS

For a better understanding of the invention, some drawings are attached to which I have previously referred to in the prior art.

The first group of drawings (the first nine) can be seen in rear view, side and perspective, the installation in a normal or sport wheelchair, all the parts or devices that make up this invention. The remaining drawings (24 images), are the specific figures and in different views of each of the aforementioned parts and that form the overall of the invention, including its optional and / or configurable parts.

So that in Figure 1 it is represented in a rear perspective view of a wheelchair, the installation of all the components for the version of a single electric impeller of the Brushless or brushless type, in addition two more figures have been included To make your installation clearer. Figure 2 as a rear view for this single engine version and Figure 3 as a side view for this single engine version.

In Figure 4 the installation of all the components for the version of a single electric impeller of the Brushed type or with brushes and with chain has been represented in a rear perspective view, in addition also two others have been included more figures to make your installation clearer. Figure 5 as a rear view for this version of a single engine and Figure 6 as a side view for this version of a single engine.

In Figure 7 it has been shown in a rear perspective view of a wheelchair, the installation of all the components for the version with two electric impellers of the Brushed type or with brushes, in addition also on this occasion two more figures have been included To make your installation clearer. Figure 8 as rear view for this double engine version and Figure 9 as side view for this double engine version.

Each of these three versions for the type of electric drive motor, are the primary part of this invention. In addition, any of the three electric impellers mentioned above are compatible with the fixed anchorage devices in the chair or with the removable anchor, allowing its exchange from one version to another without incompatibility problem with the other components.

Thus, Figure 10 in its side view and Figure 11 in its rear view represent the fixed anchor to the wheelchair chassis for quick connection of the rear drive motor. As an option to this anchor there will be a removable anchor option, represented in Figure 28 for its side view and Figure 29 for its top view.

Figure 12 in its side view and Figure 13 in its rear view, corresponds to the battery that will be located under the seat of the wheelchair and attached to the previous anchor (Figure 10 and Figure 11) or in a vertical position attached to the Optional vertical support chassis represented by Figure 30 for the side view and Figure 31 for the rear view.

Figure 14 in its side view and figure 15 in its top view, represents the controller extension and which is connected to the main controller by means of retractable and extensible cable. To this controller extension, a lever accelerator is connected and it will be operated with the forearm, represented in Figure 16 in its side view and Figure 17 in rear view. As an option to this lever, there is another one with the same characteristics and that will be operated with the leg, represented in Figure 26 for its side view and Figure 27 for its rear view.

In Figure 18 for its side view and Figure 19 for its rear view, the electric impeller with a single brushless wheel is shown. Figure 20 for its side view and Figure 21 for its rear view, represent the electric impeller with a single wheel and with a brushed motor with chain, and in Figure 22 for its side view and Figure 23 for its rear view, the electric drive with two driving wheels with brushed or brushless motor.

Figure 24 for its side view and Figure 25 for its top view, represents a special controller extension and intended for the electric impeller composed of two driving wheels and in which a control joystick can be seen.

PREFERRED EMBODIMENT OF THE INVENTION

Once explained the disposition of each and every one of the parts that make up the global of this invention, in the first group of nine images (Figures) we enter to detail each of them in order of installation and according to the different three versions available.

Figure 10 in side view and Figure 11 in rear view, for the fixed anchoring system on the wheelchair chassis, is composed of various pieces made of extremely hard metal or carbon fiber, which when joined together give how it forms a T, giving it rigidity and having the ability to absorb the impacts and vibrations that any of the three versions of the drive motor can transmit (Figure 1, Le) (Figure 4, 1.f) or (Figure 7, 1. g) when they are anchored to this part, since their purpose, in addition to being the anchoring of the drive motor, is to join the axle of the rear wheels of the wheelchair (1) with the chassis of the chair in the front part under the user's seat (2) stiffening said group of pieces, both parts being joined together by a metal brace adjustable in height and inclination (3), in order to adapt the dimensions and facilitate the installation of this part to any Wheelchair. At the rear, three anchors are installed in a circular shape and holes (4) that will be removable and adaptable, made of very hard metal. Once the drive motor is anchored, it will be locked with a mechanical seal (5). This device for anchoring to the wheelchair chassis also contains the battery connection socket (6) that will be made of a medium hard plastic material. And finally, a connection rail for the battery (7) where it slides in from the rear and that will be of a hard metal, since it must offer consistency and support for the battery, which will be described later.

The (Figure 28) in side view and (Figure 29) in top view, make up a removable anchor and as an option to the previously explained and serves to prevent the permanent installation in our wheelchair of a rigid chassis. Thus, just like the previous anchoring bracket, this is composed of several rigid and hook-shaped parts, in which different parts can be seen, such as the U-shaped rear anchor, made of a hard metal or fiber carbon, with rubber bands (70) inside to anchor to the rear axle of the wheelchair and avoid transmitting vibrations to the wheelchair. An extension arm (71) in metal of equal hardness to the previous one and with lateral holes (72) to be able to adjust the length of said arm and with a clamp (73) for its assembly or disassembly that can be metallic or plastic Lasted. The U-shaped front anchor opposite the previous U rear, will be made of hard metal and with rubber bands (74) to also avoid vibrations. In addition, it will have a thyme (75) for adjusting and fixing to secure the anchor and that it can be turned by hand. At the rear it will have holes (76) on the side of the rear U-anchor (70) and on each side, to connect this hook-shaped arm to the chassis of the electric drive device, as will be specified later.

This second version of removable anchor (Figure 28) in side view and (Figure 29) in top view, requires the installation of a special anchoring device for the connection and installation of the battery in the back of the chair and vertically (Figure 30) in side view and (Figure 31) in rear view, This anchoring device will be installed on the top rear of any of the three different chassis that will be used by the drive motors for each of the three versions.

Thus, in the figures (Figure 30 and Figure 31) a small metal chassis (80) where the battery connection socket is located

(82)

It will be made of hard plastic and the battery anchor rail (83) where it will slide, being secured and that it will be made of a hard metal to guarantee the stability of the battery. In addition four holes are observed

(81)

for installation and fixing in the chassis for the electric drive motor mentioned above and which will be exposed later.

The (Figure 12) in side view and (Figure 13) in rear view, is a generic battery that can be Lithium, lead or any other technology that provides the autonomy desired by the user of the wheelchair and that composes a aluminum frame (8) an internal electrical connection socket (9) of a plastic material and with an anchor and key lock device (10) will also have a socket rail in the aluminum frame for anchoring and fastening ( 11) and a handle (12) for its extraction and handling, and that will be of a hard metal coated with rubber.

The (Figure 14) in side view and The (Figure 15) in top view, are themselves composed of two parts and which in turn and will always go together, separating only if you want to disassemble and dispense with the electric rear impeller, remaining in this way, only one part (13) attached to the wheelchair chassis in the front.

Thus and in reference to Figures 14 and 15, on the one hand we have the support (13) that will be made of a semi-hard metal such as aluminum or carbon fiber, which has to have a certain consistency since it will serve as an anchor of the extendable controller part with spiral retractable cable. This support is attached to its second part by means of a quick and simple connector (19), which can be a simple magnet that fixes both pieces with hardness and stability. The second part of this (Figure 14) in side view and La (Figure 15) in top view and as I mentioned above is the extension of the controller (14) for the main controller and that will be done in combination of aluminum and hard plastic , or a piece of carbon fiber.

The main anchoring support (13) as part of this group of two different parts, consists of a small metal chassis with holes

(15) to be able to be anchored to the wheelchair chassis on the front side, and will include some anti-vibration tires (16) on its inner face, it also has a perforated tongue (17) to hold the lever-type control that is will detail later. It also has an L-shaped support with a metal base where the closure will act by magnet or other fastener (18) and that will facilitate the coupling of the extension of the controller at its bottom (19).

The extension of the controller (14) will be valid for any of the electric impellers with a single motor (with or without brushes) and as already mentioned above, it will be constructed of metal and plastic, but with the option of being made of carbon fiber . Thus, in its lower part (19) it will have a powerful magnet or other similar fast anchoring system installed, which will keep it firmly attached to the main anchoring support (13) on its part (18). In addition, at that height you will have two quick connect female connectors (20) for the lever-type control that will act as an accelerator and that I will mention in the description in the following figure. In its upper part it will have a plastic cover with different toggle switches and pushbuttons (21) with different functions, a battery level indicator (22), some Led function indicators (23), a switch with a key switch on the side exterior (24) and a front led light (25) position.

The (Figure 16) in side view and The (Figure 17) in rear view, make up the mechanical accelerator lever by pressure of the forearm, and is composed of a small metal chassis in aluminum or carbon fiber, extendable, with adjustment and locking ( 26) by pressing a thyme, to bring the control to the correct operating position for the user. An anchor base (27) with a thyme or pressure fixing clip and which will connect this lever device to the anchor support installed in the chair as a subsection for the controller extension module (Figure 14) and (Figure 15 ) on your part (17). The lever device that also contains a potentiometer (28) with a plastic spiral retractable cable (29) that will be connected to the controller extension mentioned above in Figures 14 and 15, by its connector (20). It also has a mechanism in the form of "Flexoquot; metal (30) that allows pressure to be exerted by means of a metal spring (31) and to perform a movement in parallel to the wheel of the wheelchair, and thus activate the potentiometer (28) mentioned above, which will generate a certain electrical resistance, which It will be interpreted by the central controller and that in turn will transform into electrical tension that will result in speed of movement on the motor and the wheel of the driving device for any of the two impellers with a single motor.

It should also be mentioned that at the opposite end of the "Flexoquot; a second chassis (32) is realized in aluminum or carbon fiber, with a curved shape and that must be adjusted to the height of the wheelchair's wheel cover protector (if any) or where the user considers necessary and accessible to its use, in order to be able to be pressed with the forearm or with the wrist of the wheelchair user. It also has a small chassis (33) also in aluminum or plastic, for security, suspended on the previous chassis (32) and with two small metal springs (34), so that only the user of the wheelchair and only by pressure can you activate the rear electric drive.

As an option to this lever system that will act as an accelerator and that has already been detailed, there is another device with the same characteristics, but only for users who do not suffer from paraplegia and who control the motor movements of their legs. This second lever system will be compatible with the previous one, since this will be operated with the knee or with the leg of the wheelchair user, thus giving it more freedom of movement, having in this case a greater freedom of movement with both arms.

Thus, La (Figure 26) in side view and La (Figure 27) in rear view, is composed of a small metal L-shaped chassis (60), An anchor base (27) with a thyme or fixing clip by pressure and linking this lever device to the anchor support installed in the chair as a subsection for the controller extension module (Figure 14) Y (Figure 15) in its part (17). And at its opposite end of the chassis (60), three transverse holes (66) where the lever mechanism (61) will be anchored that will be of a medium hard metal or carbon fiber and that will be pressed with the user's knee of the wheelchair or with the leg and by means of a metal spring (30). This lever and as in the previous flexo arm version, will have a plastic Micro-pushbutton device (34) installed as a safety control and only activated with the pressure that the user of the wheelchair Exercise with your knee or leg. The lever (61) in turn will mechanically activate a potentiometer (28) and, as in the previous case, it is connected with a spiral retractable cable to the controller extension that will be fixed to the chassis of the wheelchair.

Figure 18 in its side view and Figure 19 in its rear view, make up the primary and basic part of the invention and which in this case is an electric drive motor with Brushless motor (brushless).

This device is made up of several parts and we start with a main chassis (35) of a hard metal or carbon fiber, where the controller will be anchored in its inner lower part (36). On top of this chassis

(35) the two anchoring and joining devices (37) will be on both sides of the chassis installed in the wheelchair (Figure 1, the) in its part (4) and that they will be of an extremely hard metal or carbon fiber , as they must withstand the thrust of the entire drive and withstand the vibrations and impacts. It also has a metal handle (38) covered with rubber to facilitate its installation or removal and in its lower part a vertical mechanism (39) type hinge and metal, which will serve as a union with the following chassis (40) and that will allow a small rotation horizontal between both chassis (35) and (40). The chassis (40) will be of a hard and resistant metal or carbon fiber and in turn, will consist of two parts. In its upper part, there is a small and resistant metal arm, to which a shock absorber (41) is attached by means of a metal mechanism for anchoring and de-anchoring the shock absorber and which has a handle (47) and which will act as a fixing to the chassis In its lower part, it is connected by a horizontal tilting mechanism (42) with the following chassis (43). The chassis (43) has a U-shape and will be of a less hard metal than the previous ones, being able to be of aluminum or carbon fiber, since we will try to lighten the weight a bit, this chassis will perform a vertical tilting movement with help and shock absorber subsection (41) mentioned above. This chassis will have installed a wheel (44) of normal characteristics and pneumatic or solid chamber and with an integrated motor of Brushless technology (without brushes). In turn, the wheel will be protected in its upper part by a cover (45) of plastic material in which a Led positioning light (46) will be installed. The wheel (44) will exert traction force against the ground by the action of the shock absorber (41) mentioned above, once the anchoring and de-anchoring system (47) is activated, which allows, as I said, to have traction on the ground, or stay in the airborne if the use of the driving device is not needed.

Figure 20 in its side view and Figure 21 in its rear view, is similar to the previous one in terms of parts and functionality, except that its driving motor for this version is a Brushed motor (with brushes).

This device is also composed of several parts like the previous impeller. We start with the main chassis (35) of a hard metal or carbon fiber, where a chassis (50) will be anchored in its inner lower part which in turn will contain the installation of a motor with brushes and pinion (48) And in its upper part is the controller of the device in question (36). At the top of this chassis (35) will be on both sides the two anchoring and joining devices (37) to the chassis installed in the wheelchair (Figure 4, 1.a) in its part (4) and which will be of an extremely hard metal or carbon fiber, since they must withstand the thrust of the entire driving device and withstand the vibrations and impacts, also has a rubberized metal handle (38) to facilitate its installation or removal, and in Its lower part has a vertical mechanism (39) type hinge and metal, which will serve as a union with the following chassis (40) And that will allow a small horizontal rotation between both chassis (35) and (40). The chassis (40) will be of a hard and resistant metal or carbon fiber and in turn, will consist of two parts. In its upper part, there is a small and resistant metal arm, to which a shock absorber (41) is attached by means of a metallic mechanism for anchoring and de-anchoring the shock absorber and which has a handle (47) that will act as a fixing to the chassis. In its lower part, it is connected by a horizontal tilting mechanism (42) with the following chassis (43). The chassis (43) has a U-shape and will be of a less hard metal than the previous ones, being able to be made of aluminum or carbon fiber, since we will try to lighten some weight, this chassis will perform a vertical tilting movement with help and sub section of the shock absorber

(41) above. This chassis will have installed a wheel (44) of normal characteristics and pneumatic or solid chamber. This wheel will be installed a plate (48) which will exert movement on the wheel by a chain (49) that joins the wheel to the motor (48) installed in the chassis (50). In turn, the wheel will be protected in its upper part by a cover (45) of plastic material in which a Led positioning light (46) will be installed. The wheel (44) will exert traction force against the ground by the action of the shock absorber (41) mentioned above, once the anchoring and de-anchoring system (47) is activated, which allows, as I said, to have traction on the ground, or stay in the airborne if the use of the driving device is not needed.

Figure 22 in its side view and Figure 23 in its rear view, refer to the third and last version for this electric drive motor, and which in this case comprises the installation of a somewhat larger chassis and in which two motors will be located with Brushed technology (with brushes) but with the possibility of operation with Brushless motors (without brushes) and that in any case will allow a better, easier and more relaxed control of the wheelchair.

This last drive motor consists of a main chassis (51) made of hard metal or carbon fiber, which in turn are anchored two anchoring devices and fast connection (37) at the top and will be of a large metal hardness, absorbing the shocks and vibrations that occur in the union of this chassis (51) and the chassis of the wheelchair (Figure 7, the) in its part (4). In addition, on the top of this chassis (51) there is a metal handle (38) and covered with rubber to facilitate its installation or removal quickly and conveniently. A controller (36) that will be installed in the lower outer part of the chassis (51) and two extensions (52) with an angle of 1000 with respect to the chassis (51) of the same material to the aforementioned material that composes the chassis (51) Y with an internal rail that facilitates the union, configuration and adjustments with the following double and independent chassis for each side (55). The two chassis (55) (one for each side and engine) will be made of a hard metal or carbon fiber and in turn will be articulated in its middle part (54). At its upper end they are joined by two screws to the chassis (51), once the perpendicularity of the wheels is adjusted in correct line to the rear wheels of the wheelchair, since this will determine a correct operation and rotation of the wheelchair. wheels. At the upper end of the chassis (55) there is a metal anchor (53) for the installation of a shock absorber (41), one for each chassis (55) And which, as in the previous versions of drive motors, is intended press on these driving motors against the ground and provide it with traction or allow it to be suspended in the air in standby mode, and all this by action of the fixing device (47) for the shock absorber (41) and that has a small handle . At the lower ends of both parts of the chassis (55), a motor (56) is installed for each of the two chassis (55) of the drive mechanism. These motors are with brushes and of low revolutions and as I have already mentioned there is the possibility of installing Brushless motors. In any case, they will be controlled by a joystick installed in the front extensible controller that I will detail below and as the last description of the figure. The wheels (44) will have normal characteristics, both in its chassis and in its chamber, which may be air or solid. Said wheels will be attached separately to each motor (56) and for each part of the chassis (55), on both wheels a hard plastic cover (45) will be installed and on these, a Led light (46) for rear positioning, a For each wheel.

In order to control this last drive device that is characterized by having two driving wheels, it will be necessary to replace the driver extension used by the previous drive devices and that were based on the installation of the controller extension and a pressure lever, by a controller extension more simple and easy to use due to the specific characteristics of this last drive device.

Figure 24 for the side view and Figure 25 for the top view, shows the extension module of the controller with Joystick (58) that will be constructed of metal and plastic, but with the option of being made of carbon fiber and like the previous extension modules. Thus, in its lower part (19) it will have a powerful magnet or other similar rapid anchoring system installed, which will keep it fixedly attached to the fixed anchoring support in the wheelchair (13) for its part (18) corresponding to the Figures 14 and 15.

This controller extension will have in its upper part a plastic cover with different toggle switches and pushbuttons (21) with different functions, a battery level indicator (22), some Led's function indicators (23), a switch with contact key on the outer side (24) in addition to a Led headlight (25) position. This device is different from the others because it incorporates a joystick-type lever (59) on which we must act mechanically with the hand, in order to transmit, by means of electrical impulses, the necessary information to the central controller that in turn and as the previous extension of the controller will make possible the rotation and displacement by the driving device composed of two motors.

At this point I must mention once developed and explained specifically each part that make up this invention, that the optional devices such as the removable anchor (Figure 28 and Figure 29) will be attached to any of the three chassis for electric impellers, by the holes for the quick and fast anchoring anchors (37) and in its part (76) for this removable anchor.

Similarly, and using the same connection holes between the chassis of the electric impellers (37), the removable anchor (76) will be attached to the vertical anchoring device for the battery (Figures 30 and 31) by its holes (81 ), since this removable anchoring device (Figures 28 and 29) needs the special vertical anchor for the battery.

Claims (3)

P.-Electric rear impeller for normal wheelchairs, garters and / or sports, so that any of the aforementioned 5 wheelchairs, with technology, autonomy and mechanical enough for its fast, simple and practical transformation of a manual wheelchair to an electric wheelchair, and which is characterized by being a combination of several removable and / or fixed parts attached to the chassis of the wheelchair to be adapted, which includes a rigid chassis that is installed so permanent in the wheelchair or with removable option, a battery under the seat that can be of lithium, lead or any other technology that provides electrical autonomy to the device, a second rigid chassis with vertical and horizontal movement capacity and that at its Once it includes an electronic control unit and a motor with Brushed or Brushless technology, it also has a front support 15 installable to the right or left of the user, where the extension device is anchored to the main controller and to which a mechanical lever-type support is attached, which acts as an electronic accelerator to act on the rear electric drive device. 20 2a._ Rear wheelchair electric impeller according to claim P, characterized by the optional installation of a battery holder in the drive motor chassis and anchoring the battery in an upright position. 3a._ Rear wheelchair electric impeller, according to the Claim 1, characterized in that it is controlled to have switching switches in the controller extension capable of reversing the direction of rotation of the rear drive motor, allowing it to rotate in one direction or another.  FIGURE 1 1 C \ FIGURE2  FIGURE 3    l.d --- ~~~   l.b - + - II- ~~~~ the FIGURE 4  FIGURE 6 one . , , J  FIGURE 7    FIGURE8    FIGURE9   1.b11l1 ~~~ the  1.g ~ FIGURE 10  FIGURE 11   ~ \ ~ .. ..  FIGURE 12   or .- or  FIGURE 13 8   10  12 ._ --- _   9 '(11  FIGURE 14    FIGURE 15   13 14 23 25  1F 22 "; quot; 1II ~! ..: a: __  t ----..-. L: c ::: 1 ~ l \  ee ~ 21 eee

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