Assistive and support device for exercising lower limbs

Abstract

The present invention discloses an assistive and support device for exercising lower limbs, which has support posts provided with fastening clamps on the rear face thereof, which allow the device of the present invention to be adapted to various pieces of exercise equipment. Said support posts are vertical structures with a hollow interior that house axles on which toothed straps are mounted and which move in a synchronised manner with the movement of a motor. This configuration makes it possible to have a support during weight training, an activity that can be safely performed as it is provided with a locking mechanism. The device of the present invention has sensors to monitor the electrical activity produced by the skeletal muscles to detect the user's effort in order to prevent injuries during exercise.

Description

[0001] ASSISTANCE AND SUPPORT DEVICE FOR LOWER LIMB EXERCISE

[0002] TECHNICAL FIELD OF THE INVENTION

[0003] The present invention relates to the technical field of mechanics, electronics, biomedicine, mechatronics and more specifically to bioengineering and assistance, rehabilitation and exercise technology, since it provides an assistance and support device for lower limb exercise.

[0004] BACKGROUND OF THE INVENTION

[0005] Lower extremity exercise devices are tools designed to assist in strengthening, rehabilitating, and increasing leg mobility. These devices range from simple mechanical mechanisms to more complex systems that may include electronic and mechanical components.

[0006] The evolution of these devices has been characterized by a constant effort to improve functionality and effectiveness in supporting leg exercises. In the early stages, they focused on basic mechanical mechanisms, such as pedals and adjustable resistance systems, that allowed users to perform strengthening and mobility exercises. Over time, and especially with the advancement of technology in recent decades, these devices have incorporated more advanced features. This includes the integration of electronic components to provide feedback and performance tracking, as well as more sophisticated resistance and support systems that better adapt to the individual needs of users.

[0007] The incorporation of digital and sensor technology has enabled more detailed analysis of movement and exercise effectiveness, improving these devices' ability to provide personalized and adaptive workouts. Furthermore, improved materials and designs have led to devices that are lighter, more durable, and more comfortable for users.

[0008] In the context of rehabilitation, these devices have played an important role in supporting people with injuries or conditions that affect leg mobility, allowing them to perform exercises in a controlled and safe manner. This has been crucial in improving recovery and maintaining mobility in patients with various medical conditions.

[0009] As the technology and design of these devices have advanced, there has been a parallel development in devices that provide additional support and assistance to the use of lower extremity exercise equipment. These add-on devices are designed to facilitate the use of existing equipment, especially for individuals with limited mobility or those who require additional assistance during their exercise routine. For example, assistive devices have been developed that help users maintain balance or properly position their lower extremities while using exercise equipment. Other devices offer mechanical or motorized assistance to aid in movements, which is particularly useful for individuals undergoing rehabilitation or those with significant muscle weakness.These devices can range from simple supports and guides to more complex systems that integrate with exercise equipment to provide adaptive assistance based on the user's responses.

[0010] A search was conducted for the state of the art of lower limb exercise assistance and support devices, where it was found that different ones have been developed, as mentioned in the United States of America patent application document number US20190183715 (A1), with a publication date of June 20, 2019, entitled "APPARATUS AND SYSTEM FOR LIMB REHABILITATION", said document describes a robotic apparatus and system for lower limb rehabilitation, which consists of a movable frame, a dynamic weight unloading mechanism and a lower limb exoskeletal device. In one embodiment, the movable frame structure consists of left and right vertical structural support members connected by a crossbar to which a telescopic arm assembly is attached; a harness is attached to the telescopic arm; a flexible rope is attached to the telescopic arm to support the harness.The harness helps support and secure the torso and pelvic region of an injured patient / individual / user to provide completely fall-safe limb rehabilitation. In one embodiment, a robotic management module and system is implemented using a processor, device, and hardware to optimize exercise for a user and control the robotic lower limb rehabilitation apparatus. In another embodiment, a closed-loop control system is implemented to deliver prescribed therapy protocols to the patient. Multiple sensors are used to detect the patient's gait behavior and exertion and are connected to the lower limb exoskeletal device and the mobile frame sensors, and based on the feedback received, a proprietary control algorithm sends corrective drive signals to the motors.

[0011] Another document found is Chinese patent number CN105832496 (B), published on March 16, 2018, titled “A TYPE OF NOVEL REHABILITATION TRAINING DEVICE WITH LOWER LIMB EXOSKELETON AND TRAINING METHOD”, which addresses problems such as the efficiency and safety of recovering a patient’s lower limbs in human body locomotor limb rehabilitation training, and increases the adaptability of the trainer. The rehabilitation device is equipped with angle, displacement, and pressure sensors, which can be adaptively adjusted by detecting motion parameters associated with the patient.The lower limb exoskeleton, the width and height adjustment mechanism, and the anti-gravity treadmill all utilize a modular design, allowing the intensity and amplitude of the training to be adjusted according to the patient's physique and rehabilitation progress, thereby improving adaptability. The designed lower limb exoskeleton has been integrated into an anti-gravity treadmill.

[0012] As can be seen, none of the documents described above have the technical characteristics necessary to solve the problem of adapting the device to various pieces of equipment, especially for exercising the lower extremities. They do not describe having clamps that allow the device to be mounted on various pieces of equipment commonly found in gyms. Nor do they describe having elements that allow said equipment to be used for exercise according to the user's ability.

[0013] Another feature not described or evidenced in the aforementioned documents is that they do not have bands or a pinion that allows assistance with lifting weight, as well as having a locking mechanism that detects when the weight being lifted has a drastic change in descent, activating an instant stop to avoid an accident.

[0014] The aforementioned documents do not describe the monitoring of the electrical activity produced by skeletal muscles that is generated when the muscles contract due to the excitation of muscle fibers by nerve impulses, which allows the detection of the work of the user of the assistance and support device for exercising lower limbs, the subject of the present invention, in order to avoid injuries during exercise.

[0015] OBJECT OF THE INVENTION

[0016] The present invention aims to provide an assistance and support device for exercising lower limbs, which solves the aforementioned problems.

[0017] Another object of the present invention is to provide an assistance and support device for exercising lower limbs, which has support posts that have on their rear face some clamping clips, which allow the device of the present invention to be adapted to various exercise equipment, especially for the lower limbs.

[0018] Another object of the present invention is to provide an assistance and support device for exercising lower limbs, which has support posts that are vertical structures hollow inside, which house rotating shafts on which toothed bands are mounted which move in a synchronized and efficient manner in the direction in accordance with the movement of at least one electric motor, this configuration allows for support and assistance for the user of the device that is the subject of the present invention, at the time of lifting weights, which is done safely according to their capacity without running the risk of injury.

[0019] Another object of the present invention is to provide an assistance and support device for exercising lower limbs, which has sensors for monitoring the electrical activity produced by skeletal muscles that is generated when the muscles contract due to the excitation of the muscle fibers by nerve impulses, which allows detecting the work of the user of the assistance and support device for exercising lower limbs that is the subject of the present invention, in order to avoid injuries during exercise.

[0020] BRIEF DESCRIPTION OF THE FIGURES

[0021] The characteristic details of this novel lower extremity assist and support device are clearly shown in the following description and in the accompanying figures, as well as an illustration thereof, and the parts shown are indicated by the same reference symbols. However, these figures are shown as examples and should not be considered as limiting the present invention.

[0022] Figure 1 shows a front perspective view of the lower limb exercise assistance and support device.

[0023] Figure 2 shows a posterior perspective view of the lower extremity exercise assistance and support device.

[0024] Figure 3 shows a detailed front perspective view of the back support of the lower limb exercise assistance and support device, with the fastening mechanisms and the closing mechanisms.

[0025] Figure 4 shows a detailed rear perspective view of the back support of the lower limb exercise assist and support device. Figure 5 shows a front perspective view of one of the support posts of the lower limb exercise assist and support device.

[0026] Figure 6 shows a detailed view of the lower part of the interior of a support post of the lower limb exercise assistance and support device, where the assembly of the toothed bands on the rotating shafts can be seen, as well as a clamping mechanism.

[0027] Figure 7 shows a detailed view of the upper part of the interior of a support post of the lower limb exercise assistance and support device, where the assembly of the toothed bands on the rotating shafts, a clamping mechanism, as well as the locking mechanism with the pinion shaft can be seen.

[0028] Figure 8 shows a detailed top perspective view of the interior of a support post of the assistance and support device for exercising lower limbs, where the block mechanism with the pinion shaft and the assembly of the bar with said pinion shaft can be seen, as well as the assembly of the support bar with the bar.

[0029] Figure 9 shows a detailed bottom perspective view of the interior of a support post of the assistance and support device for exercising lower limbs, where the block mechanism with the pinion shaft and the assembly of the bar with said pinion shaft can be seen, as well as the assembly of the support bar with the bar.

[0030] Figure 10 shows a rear perspective view of the locking mechanism of the lower limb exercise assistance and support device, with the pinion shaft.

[0031] Figure 1 1 shows a front perspective view of the locking mechanism of the lower limb exercise assistance and support device, with the pinion shaft.

[0032] Figure 12 shows a front perspective view of the locking mechanism of the lower limb exercise assistance and support device, without the pinion shaft and with the plates separated from the stepped profiles activating the lock.

[0033] Figure 13 shows a rear perspective view of the locking mechanism of the lower limb exercise assistance and support device, without the pinion shaft and with the plates separated from the stepped profiles activating the lock.

[0034] Figure 14 shows a detailed view of a clamping clamp of the lower limb exercise assistance and support device.

[0035] Figure 15 shows a detailed view of a clamping device for assisting and supporting lower limb exercise.

[0036] DETAILED DESCRIPTION OF THE INVENTION

[0037] For a better understanding of the present invention, the parts that make up the assistance and support device for exercising lower limbs are listed below:

[0038] 1. Support posts

[0039] 2. Lid

[0040] 3. Slot

[0041] 4. Rotary axes

[0042] 5. Toothed belts

[0043] 6. Locking mechanism

[0044] 7. Central body

[0045] 8. Cavity

[0046] 9. Outgoing

[0047] 10. Stepped profile

[0048] 11. Linear actuators

[0049] 12. Stem

[0050] 13. Slots

[0051] 14. Plate

[0052] 15. Pinion shaft

[0053] 16. Bar

[0054] 17. Support bar

[0055] 18. Back support

[0056] 19. Clamping mechanism

[0057] 20. Closing mechanism

[0058] 21. Flat section

[0059] 22. Sensors 23. Slot

[0060] 24. Clamping clamp

[0061] 25. Spring

[0062] With reference to the figures, the assistance and support device for exercising lower limbs is made up of two support posts (1) which are vertical structures hollow inside and of an elongated rectangular prismatic shape with symmetry in its longitudinal axis, each support post (1) lacks a face on which a cover (2) is placed, which is preferably removable and which has a slot (3) arranged longitudinally to the center that runs almost the entire height of the cover (2) and is parallel to the edges.The support posts (1 ) are arranged opposite each other so that the part lacking its face and where the lid (2) is placed, are directed towards each other, the support posts (1 ) maintain a constant separation without physical contact or convergence between them, this implies that the support posts (1 ) are arranged in such a way that their faces that have the lids (2) look at each other directly, but are at a fixed distance that prevents any approximation or collision; this arrangement guarantees that both the support posts (1 ) remain in stationary and equidistant positions along an imaginary axis that connects their geometric centers.

[0063] Two pairs of rotary shafts (4), which are preferably cylindrical, are placed on the inner face, posterior to where the cover (2) of each support post (1) is located, one pair distributed in the upper region and another pair of rotary shafts (4) in the lower one; these rotary shafts (4) are meticulously aligned in the vertical plane to guarantee the alignment and precision in the assembly of two toothed bands (5) inside each support post (1), distributed on the left side, both the upper and lower rotary shaft (4), and another toothed band (5) on the right side, both the upper and lower rotary shaft (4);the toothed bands (5) are arranged longitudinally extending inside each support post (1) and move synchronously and efficiently in the direction in accordance with the movement of at least one electric motor (not illustrated) that is located inside each support post (1), preferably in the lower part and that is in contact with a rotating shaft (4);This configuration allows movement to be transferred, with the rotating shafts (4) acting as support points and guides for the path of the toothed bands (5), thus helping to provide support and assistance to the user of the device of the present invention, when lifting weights, which is done safely according to their capacity without running the risk of injury. Another technical effect that allows the exact alignment of the pairs of rotating shafts (4) is that it ensures that the toothed bands (5) remain taut and aligned during their movement, minimizing friction and maximizing the efficiency of the transmission system. Structural integrity, precise alignment and movement functionality are critical to the design and have been carefully considered to ensure optimal and reliable performance of the lower limb exercise support and assistance device.

[0064] A locking mechanism (6) as illustrated in figures 10 to 13, is formed by a central body (7) with a cavity (8) for bearings in the upper central part of its surface, and with a projection (9) with its upper profile rounded at each lateral end of the central body (7) maintaining the same height of said central body (7), at the lower end of each projection (9) there is a projection of a stepped profile (10) with a progressive decrease in both width and height towards the ends in relation to the projections (9), such that an "L" is formed. Two linear actuators (11) are placed at the center of the base of the central body (7), arranged in a coaxial configuration, and with their rods (12) in opposite directions, allowing linear movement in two different vectors pointing towards each projection (9).Two longitudinal slots (13) are placed in the profile of the base of the central body (7), which project from the stepped profiles (10) until before reaching the linear actuators (1 1 ); a plate (14) is fixed at each end of each rod (12) of the linear actuators (1 1 ) and are assembled in the slots (13), this configuration allows the plate (14) to have a linear movement on the slots (13) causing them to approach or move away from the stepped profiles (10). Each plate (14) has the same dimensions of length, height and thickness of the stepped profiles (10). A speed sensor (not illustrated) of the speedometer type, is installed inside the central body (7) of the locking mechanism (6).

[0065] A locking mechanism (6) is placed inside each of the support posts (1 ) with its central body (7) next to the rear wall of each support post (1 ) and its projection (9), stepped profile (10) and the plate (14) in the middle of each of the toothed bands (5), as shown in figures 7 to 9. This configuration allows that when the speedometer (not illustrated) detects an increase in the speed of movement of the locking mechanism (6), the linear actuators (1 1 ) are activated to separate the plates (14) from the stepped profile (10) by exerting pressure between both toothed bands (5) to stop their movement immediately.

[0066] A pinion shaft (15) is placed at one of its ends in the bearing cavity (8) located in the upper central part of the surface of the central body (7) of each locking mechanism (7), with a pinion shaft (15) arranged at the center of the toothed bands (5) of each support post (1), such that the teeth of the pinion shaft (15) are assembled with the toothed bands (5), allowing this configuration for the pinion shaft (15) together with the locking mechanism (7) to have a vertical translation movement when the toothed bands (5) are in motion by means of the rotating shafts (4). The end of the pinion shaft (15) opposite to the one located in the bearing cavity (8) protrudes through the slot (3) of the cover (2) of each support post (1), as illustrated in figures 1 and 2.

[0067] A bar (16) is attached at one of its ends to the end of the pinion shaft (15) protrudes through the slot (3) of the cover (2) of each support post (1 ), and projects perpendicularly towards the rear of the support posts (1 ), as illustrated in figures 1, 2, 8 and 9. A support bar (17) extends horizontally between the two support posts (1 ) and its ends are fixed to the end of the respective bar (16) located in each of the support posts (1 ), as illustrated in figures 1 and 2. The support bar (17) is a structural metal profile that exhibits a cross section with parabolic geometry, generating a concave cavity in its surface; the curvature of the profile of the support bar (17) is continuous and symmetrical, similar to a half section of a cylinder; This configuration allows a bar of various exercise equipment to be positioned and held on the support bar (17).

[0068] A back support (18) being a rectangular shaped plate of a length extending from the upper back to the lower back of a person, said back support (18) having at its upper part a geometric configuration adapted for assembly with the lower part of the support bar (17) such that the back support (18) extends vertically from its anchoring point, being suspended in a stable manner and maintained in a fixed vertical position, without oscillatory displacement, providing a reliable connection. The geometric configuration of the upper part of the back support (18) includes a profile or slot that fits precisely to the lower part of the parabolic geometry of the support bar (17), ensuring proper coupling and firm fixation without intervening with the concave cavity in the surface of said support bar (17).

[0069] At least two fastening mechanisms (19) are placed on the front face of the back support (18), which can be harnesses, straps, belts or a combination of the above; the ends of said fastening mechanisms (19) that are not attached to the front face of the back support (18) are separated and have at least one closing mechanism (20) that allows the separated ends of the fastening mechanisms (19) to be joined or closed and adjusted to the torso of the user of the lower limb exercise assistance and support device, such that the user is positioned with his back on the back support (18) and surrounds his torso by means of the fastening mechanisms (19) and secures them by means of the closing mechanisms (20), which allows the position of the back support (18) on the user's back to be fixed.Said fastening mechanisms (19) are preferably arranged one at the bottom and the other at the top of the back support (18) without reaching the end, as illustrated in figures 1, 2 and 3.

[0070] The closing mechanisms (20) can be selected from the group of clasps, sailboat clasps, clasp with loop, buttons, buckles, magnetic elements, bayonet closures or the combination of the above.

[0071] The fastening mechanisms (19) preferably have a flat section (21) in the part that is joined to the front face of the back support (18), allowing the connection to be secured with the back support (18) and providing greater comfort to the user of the assistance and support device for exercising lower limbs, which is the subject of the present invention.A plurality of sensors (22) are arranged on the surface of the inner face of each fastening mechanism (19), said sensors are of the electromyographic type and are configured to detect the electrical activity produced by the skeletal muscles, this activity is measured in the form of electromyographic signals, which are generated when the muscles contract due to the excitation of the muscle fibers by nerve impulses, which allow the detection of the work of the user of the assistance and support device for exercising lower limbs that is the subject of the present invention, in order to avoid injuries during exercise.

[0072] At least two slots (23) are placed horizontally on the rear face of each of the support posts (1 ), arranged one at the top and one at the bottom; a third slot (23) can be placed at the center of the rear face of each of the support posts (1 ). A clamping clip (24) is placed over each slot (23), which has a rounded shape in its final section and a square shape in its inner section, allowing easy assembly with the support posts (1 ). A spring (25) is placed inside each slot (23) at one of its ends and is in contact with the clamping clip (23), exerting pressure on it, in order to keep it closed.This configuration allows the lower limb exercise assistance and support device of the present invention to be attached to the support posts d of exercise devices commonly found in a gym, and in this way the user can begin to perform the desired exercise without the risk of falling.

[0073] A characteristic of the lower limb exercise assistance and support device of the present invention is that the cables of the electric motors (not illustrated) that are located inside each support post (1); the linear actuators (1 1) of the locking mechanisms (6); the speed sensors (not illustrated) that are located inside each central body (7) of the locking mechanisms (6); the sensors (22) arranged on the surface of the inner face of each clamping mechanism (19), are arranged internally and extend to the inside of one of the support posts (1) to connect with a control module (not illustrated) that is located inside one of the support posts (1), said control module is made up of a microcontroller (not illustrated), a power supply (not illustrated) and a wireless communication unit (not illustrated).The power supply (not illustrated) is a preferably rechargeable battery and is configured to power the electrical and electronic components of the lower limb exercise assistance and support device of the present invention.

[0074] The wireless communication unit (not illustrated) can be via Bluetooth, WiFi (Wireless Fidelity) or UWB (Ultra Wide Band) and is configured to connect to a smart device and program the routines of the lower limb exercise assistance and support device of the present invention. The smart device can be a tablet, a telephone or a computer.

[0075] PREFERRED EMBODIMENT OF THE INVENTION

[0076] Examples

[0077] The following examples illustrate a preferred way of carrying out the present invention, and should not be considered as limiting it.

[0078] Example 1. Operation of the assistive and support device for lower limb exercise.

[0079] With reference to the aforementioned figures, the support posts (1) are positioned in the frame of the exercise apparatus to be used, to secure it by means of the clamping clips (24) which are opened and positioned in the frame of said exercise apparatus, and the clips are released so that the spring (25) exerts pressure on the clamping clips (24) and keeps them closed; subsequently, the user of the assistance and support device for exercising lower limbs, the subject of the present invention, is positioned with his or her back to the device, such that his or her back comes into contact with the back support (18) which extends from the upper back to the lower back of the person, and the clamping mechanisms (19) are placed around the user's torso. Once adjusted, they are secured by closing the closing mechanisms (20) in such a way that the sensors (22) are always in contact with the user's torso.Subsequently, the bar of the exercise apparatus with the desired weight is placed in the concave cavity of the support bar (17); while all this happens, the locking mechanism (6) is activated and the motors (not illustrated) that are in contact with the rotating shafts (4) that are located inside each of the support posts (1) are deactivated, this in order to provide security while the user prepares to start his exercise routine.

[0080] A smart device, such as a tablet, a phone or a computer is connected to the control module (not illustrated) by means of the wireless communication unit, in order to program the microcontroller (not illustrated) and program the routine to be performed; subsequently the motors (not illustrated) begin to move and transfer their movement to the rotating axes (4), which makes the toothed bands (5) move and in turn makes the pinion shaft (15) rotate up and down at a programmed speed, allowing the user of the assistance and support device for exercising lower extremities that is the subject of the present invention to start their routine.

[0081] The sensors (22) are constantly monitoring the electrical activity produced by the user's skeletal muscles, which allows the user's work to be detected, and if the measurement is out of range, the sensors (22) send the signal to the microcontroller (not illustrated) to send the signal to the linear actuators (11) causing them to activate and the rods (12) move the plates (14) through the slots (13), causing the toothed bands (5) to stop immediately; the same thing happens if the speed sensors (not illustrated) that are located inside each central body (7) of the locking mechanisms (6) detect a drastic movement, understanding that the user could not handle the weight of the routine and stops to avoid an accident.

[0082] In view of the foregoing, it is reiterated that the scope of the present invention should not be limited by the embodiments specifically described; therefore, it is understood that variations in various senses may be made. Such variations should not be considered a departure from the spirit and scope of the invention, and all such modifications may be obvious to one skilled in the art and should be included within the scope of the following claims.

Claims

CLAIMS 1. A device for assisting and supporting lower limb exercise, characterized in that it comprises: two support posts (1) which are vertical structures hollow inside, each support post (1) lacks a face on which a lid (2) is placed, which lid has a slot (3) arranged longitudinally to the center that runs almost the entire height of the lid (2) and is parallel to the edges, the support posts (1) are arranged opposite each other so that the part where it lacks its face where the lid (2) is placed are directed towards each other; two pairs of rotating shafts (4) are placed on the inner face, where the lid (2) of each support post (1) is located, one pair distributed in the upper region and another pair of rotating shafts (4) in the lower region; two toothed bands (5) are mounted longitudinally inside each support post (1) on the rotating shafts (4);at least one motor is located inside each support post (1 ) and is in contact with the rotating shafts (4); a locking mechanism (6) formed by a central body (7) with a cavity (8) for bearings in the upper central part of its surface, and with a projection (9) at each lateral end of the central body (7), two linear actuators (11 ) are placed at the center of the base of the central body (7), arranged in a coaxial configuration, and with their rods (12) in opposite directions; two slots; (13) longitudinal are placed on the profile of the base of the central body (7); a plate (14) is fixed at each end of each rod (12) of the linear actuators (11 ) and are assembled in the slots (13); said locking mechanism (6) is placed inside each of the support posts (1 ) with its central body (7) next to the rear wall of each support post (1 ) and its projection (9) together with the plate (14) in the middle of each of the toothed bands (5); a speed sensor is installed inside the central body (7) of the locking mechanism (6); a pinion shaft (15) is placed at one of its ends in the cavity (8) for bearings that is in the upper central part of the surface of the central body (7) of each locking mechanism (7), the teeth of the pinion shaft (15) are assembled with the toothed bands (5); the end of the pinion shaft (15) opposite to the one located in the bearing cavity (8), protrudes through the slot (3) of the cover (2) of each support post (1);a bar (16) is joined at one of its ends to the end of the pinion shaft (15) protrudes through the slot (3) of the cover (2) of each support post (1), and projects perpendicularly towards the rear of the support posts; (1 ); a support bar (17) extends horizontally between the two support posts (1 ) and its ends are fixed to the respective bar end (16) located on each of the support posts (1 ); a back support (18) has at its upper part a geometric configuration adapted for assembly with the lower part of the support bar (17); at least two clamping mechanisms (19) are placed on the front face of the back support (18); a plurality of sensors (22) are arranged on the surface of the inner face of each clamping mechanism (19); at least two slots (23) are placed horizontally on the rear face of each of the support posts (1 ); a clamping clip (24) is placed on each slot (23); and, a spring (25) is placed inside each slot (23) at one of its ends and is in contact with the clamping clamp (23) exerting pressure on it.

2. The assistance device of claim 1 characterized in that the support posts (1) are of elongated rectangular prismatic shape with symmetry in their longitudinal axis.

3. The assistance device of claim 1 characterized in that the cover (2) is removable.

4. The assistance device of claim 1 characterized in that the support posts (1) maintain a constant separation without physical contact or convergence between them.

5. The assistance device of claim 1 characterized in that the support posts (1) are arranged such that their faces having the caps (2) face each other directly, but are at a fixed distance.

6. The assistance device of claim 1 characterized in that the rotating axes (4) are cylindrical.

7. The assistance device of claim 1 characterized in that the rotary axes (4) are aligned in the vertical plane.

8. The assistance device of claim 1 characterized in that the toothed bands (5) are distributed on the left side, both the upper and lower rotary axis (4), and another toothed band (5) on the right side, both the upper and lower rotary axis (4).

9. The assistance device of claim 1 characterized in that the toothed bands (5) extend inside each support post (1) so that they are taut and aligned.

10. The assistance device of claim 1 characterized in that the motor is located inside each support post (1), in the lower part.

11. The assistance device of the preceding claim characterized in that the motor is electric.

12. The assistance device of claim 1 characterized in that the projections (9) have their upper profile rounded and maintain the same height as the central body (7).

13. The assistance device of claim 1 characterized in that, at the lower end of each projection (9) there is a projection of a stepped profile (10) with a progressive decrease in both width and height towards the ends in relation to the projections (9).

14. The assistance device of the preceding claim characterized in that each projection with its stepped profile (10) forms an “L” shape.

15. The assistance device of the preceding claim characterized in that each rod (12) points to a projection (9).

16. The assistance device of the preceding claim characterized in that the slots (13) project from the stepped profiles (10) until before reaching the linear actuators (11).

17. The assistance device of claims 1 and 13 characterized in that each plate (14) has the same dimensions of length, height and thickness of the stepped profiles (10).

18. The assistance device of the preceding claim characterized in that the speed sensor is of the speedometer type.

19. The assistance device of the preceding claim characterized in that each pinion shaft (15) is arranged at the center of the toothed bands (5) of each support post (1).

20. The assistance device of claim 1 characterized in that the support bar (17) is a structural metal profile that exhibits a cross section with parabolic geometry, generating a concave cavity on its surface.

21. The assistance device of the preceding claim characterized in that the curvature of the profile of the support bar (17) is continuous and symmetrical, similar to a half section of a cylinder.

22. The assistance device of claim 1 characterized in that the back support (18) extends vertically from its anchor point, being suspended in a fixed vertical position, without oscillating displacement, providing a reliable connection.

23. The assistance device of claim 1 characterized in that the geometric configuration of the upper part of the back support (18) includes a profile or groove that precisely fits the lower part of the parabolic geometry of the support bar (17).

24. The assistance device of claim 1 characterized in that the fastening mechanisms (19) are harnesses, straps, belts or the combination of the above.

25. The assistance device of claim 1 characterized in that the fastening mechanisms (19) are arranged one at the bottom and the other at the top of the back support (18) without reaching the end.

26. The assistance device of claim 1 characterized in that the fastening mechanisms (19) have a flat section (21) in the part that is attached to the front face of the back support (18).

27. The assistance device of claim 1 characterized in that the ends of the fastening mechanisms (19) that are not attached to the front face of the back support (18) are separated and have at least one closing mechanism (20).

28. The assistance device of claim 27 characterized in that the closing mechanisms (20) are selected from the group of clasps, Velcro closures, clasp with loop, buttons, buckles, magnetic elements, bayonet closures or the combination of the above.

29. The assistance device of claim 1 characterized in that the sensors (22) are of the electromyographic type.

30. The assistance device of claim 1 characterized in that the slots (23) are arranged one at the top and one at the bottom.

31. The assistance device of claim 1 characterized in that a third slot (23) is placed at the center of the rear face of each of the support posts (1).

32. The assistance device of claim 1 characterized in that each clamping clamp (24) has a rounded shape in its final section and a square shape in its inner section, allowing assembly with the support posts (1).

33. The assistance device of claim 1, characterized in that, the cables of the electric motors (not illustrated) that are located inside each support post (1); the linear actuators (1 1) of the locking mechanisms (6); the speed sensors (not illustrated) that are located inside each central body (7) of the locking mechanisms (6); the sensors (22) arranged on the surface of the inner face of each clamping mechanism (19), are arranged internally and extend to the interior of one of the support posts (1) to connect with a control module that is located inside one of the support posts (1).

34. The assistance device of claim 33, characterized in that, the control module is formed by a microcontroller, a power supply and a wireless communication unit.

35. The assistive device of claim 34, wherein the power source (not illustrated) is a battery.

36. The assistive device of the preceding claim, wherein the battery is rechargeable.

37. The assistance device of claim 34 characterized in that the wireless communication unit is provided by means of the Bluetooth, WiFi or UWB type.

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