ES1296869U - MACHINE FOR PHYSICAL TRAINING OF THE BACK MUSCULATURE OUTDOORS (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Machine (1) for physical training of the back muscles outdoors, characterized in that it is configured to be connected to a weight tower (100) that allows selecting an external load to be moved, where the machine (1) It comprises: - a post (2) having a lower end configured to be fixed to a rigid base in a forward-inclined orientation: - a seat (3) fixed to said rigid base and to a rear face of the post (2) to accommodate a user looking forward with his chest facing said rear face of the post (2); - a closed fork (4) essentially contained in a plane that is located between the post (2) and the seat (3), a lower side of the fork (4) being connected to a rotary joint (4a) fixed to a section bottom of the post (2), where the rotary joint (4a) is rotatable around a horizontal axis parallel to the rear face of the post (2), so that, when the fork (4) is in an initial rest position, it is oriented essentially vertically with its upper side located in front of the seat (3) in a suitable position for a user seated in said seat to grasp it with his hands with his arms outstretched, while, when a user pulls back said upper side of the fork (4),causes the rotation of the fork (4) until it reaches a final actuated position in which it is inclined backwards, and - A cable (5) connected to the upper side of the fork (4) and which, after passing through a set of pulleys (6a, 6b, 6c), can be connected to a weight tower (100) at the bottom, so that in such a way that the displacement of the upper side of the fork (4) when the user pulls it backwards causes a traction on the cable which, in turn, causes a set of weights arranged inside the weight tower to rise (100). (Machine-translation by Google Translate, not legally binding)

Description

DESCRIPTION

Machine for physical training of the back muscles outdoors

OBJECT OF THE INVENTION

The object of the present invention is a new machine for the physical training of the back muscles designed specifically for use outdoors, such as in parks and the like.

BACKGROUND OF THE INVENTION

At present, the practice of outdoor sports is booming, with the use of bio-healthy parks being one of the most popular activities. The so-called bio-healthy parks are public areas that have exercise machines whose purpose is to practice physical activity and improve health. The exercise machines normally used in biosaludable parks are relatively similar to the machines used in gyms, although adapted for outdoor use. A machine adapted for outdoor use must be sufficiently resistant to both the weather and vandalism, and it must also be sufficiently safe to allow its use without supervision by specialized personnel.

An important difference between the exercise machines used in gyms and those used in bio-health parks is that the latter are based on the mobilization of one's own body weight through a system of levers. The use of this type of mechanism is advantageous in this context for manufacturers due to the difficulty of designing weight towers similar to those in conventional gyms that are adapted for outdoor use.

An important drawback of this system is that it does not allow the load to be adapted to the needs and objectives of each user, which makes it difficult to control the intensity and progression of training safely and effectively.

In addition, most machines designed for outdoor use for back exercise (also commonly called rowing or traction machines) tend to have a structure that predisposes the user to adopt hyperkyphotic and inversion postures. lumbar curve that are unhealthy for the back and that can cause injuries in the medium and long term. This is the case of the increase in thoracic kyphosis or the rectification of lumbar lordosis that can give rise to lesions in the spine such as fissures, protrusions, hernias and other spinal disorders.

DESCRIPTION OF THE INVENTION

The inventors of the present invention have solved the above problems by means of a machine for strength training the muscles of the posterior part of the trunk that is based on the displacement of a determined external load by means of a system of pulleys and levers, instead of the own body weight as in prior art machines. This enables a progression in training, optimizing the benefits and safety in training.

In addition, its design allows for a safer and more comfortable position by having a lower and closer support for the feet and a support for the chest that allows pulling weights from the weight tower without compromising the spinal curves, favoring people with little experience to perform the exercise with a safer and more effective technique. Finally, the structure has different handles that provide multiple grip positions in order to be able to vary the involvement and activation of the different muscle groups involved in the exercise.

In this document, the "backward" and "forward" directions are interpreted as a function of the user's natural position when using the machine of the invention.

The machine for physical training of the back muscles outdoors of the present invention is configured to be connected to a weight tower located in front of the machine that allows selecting an external load to be moved. The weight tower is not the subject of this document, and therefore it is not described in detail here. The machine of the invention essentially comprises the following elements: post, seat, fork and cable. Each of these elements is described in more detail below.

a) Post

The post, usually square in cross section, has a lower end configured for attachment to a rigid base. The pole can be made of any weather resistant material with sufficient rigidity, such as stainless steel or similar. The fixing to the rigid base, such as a small footing, can be carried out by means of an anchor plate provided with holes for screws or bolts arranged in the lower end of the post. The post is configured for installation in a forward inclined orientation.

b) Seat

In this exercise, the seat must be separated from the post to which, as will be described later, the fork that is activated by the user during the exercise is connected. Thus, the seat is attached to the rigid base and to a rear face of the post so as to accommodate a forward-facing user with his or her chest facing said rear face of the post. In principle, the seat can be fixed in this way according to various structures, although preferably a first bar is used that has a vertical section that descends from the seat and a horizontal section whose end is fixed to the rear face of the post. Near the transition between the first and the second section, which is rounded, there is an additional bar that fixes this first bar to the rigid base.

c) Fork

It is a closed fork contained essentially in one plane and located between the post and the seat. A lower side of the fork is connected to a rotary joint fixed to a lower section of the post, the rotary joint being rotatable about a horizontal axis parallel to the rear face of the post.

Thus, when the fork is in an initial rest position, it is oriented essentially vertically with its upper side located in front of the seat in a suitable position for a user seated on said seat to grasp it with his hands with arms outstretched.

When a user pulls back said upper side of the fork, it causes the fork to rotate until it reaches a final actuated position in which it is tilted backwards. As will be described in more detail later, for the user to move the fork from the initial rest position to the final position actuated must exceed the force exerted by the mass of the weights contained in the weight tower, thus exercising the back muscles.

d) Wire

The cable is connected to the upper side of the fork and, after passing through a set of pulleys, it is connectable to a weight tower at its lower part. The cable is preferably made of steel and plasticized.

Thanks to this configuration, the displacement of the upper side of the fork when the user pulls it backwards causes traction on the cable which, in turn, causes a set of weights arranged inside the weight tower to rise.

In principle, the set of pulleys could be configured in different ways as long as it could carry out the routing of the cable from its connection to the upper side of the fork to a connection point with the weight tower. In particular, according to a particularly preferred embodiment of the invention, the set of pulleys comprises a first pulley arranged next to an upper end of the pole on its rear face, a second pulley arranged next to the upper end of the pole on its front face, and a third pulley arranged next to the lower end of the post on its front face. Thanks to this configuration, the cable has a first section between a hook element arranged on the upper side of the fork and the first pulley, a second section between the first pulley and the second pulley in which it passes through the post through a hole arranged near its upper end, a third section between the second pulley and the third pulley essentially parallel to the front face of the post, and a fourth section essentially horizontal between the additional pulley and a cable entry of the weight tower.

According to another particularly preferred embodiment, the machine of the invention further comprises a locking assembly configured to prevent the fork from rotating forward in the direction of the post beyond the initial rest position. This is important because it prevents possible harm to the user if, for example, the user releases the fork and the load applied by the weights of the weight tower causes them to return uncontrollably towards the initial rest position.

In principle, the lock assembly could be implemented in different ways, although according to a particularly preferred embodiment of the invention the lock assembly It is integrated into the joint. For example, the locking assembly could be implemented by means of a fixed plate provided with a hole in the shape of a circular arc along which a stem fixed to the fork moves. In this way, the angular length of the hole in the form of a circular arc restricts the allowed rotational path of the fork, preventing it from passing beyond the initial rest position.

In principle, the user can hold the fork directly on the upper side of the fork itself, which has an essentially horizontal orientation. It is, therefore, a pronated type of grip. However, to provide greater flexibility in relation to the user's grip, the upper side of the fork comprises a pair of handles oriented essentially parallel to the plane of the fork for the two-handed grip of the user. This will allow the user to perform a neutral grip if desired.

The machine of the invention makes it possible to carry out an exercise similar to rowing only with the elements described up to now. However, in order to promote proper technique, maintain a correct back position with the curvatures in a physiological position, and avoid injuries, the machine of the invention also includes a support plate for the user's chest contained in an essentially flat plane. vertical located between the seat and the fork. This support plate can be fixed in different ways, although it is preferably fixed to a first bar that is connected to a second bar that connects the seat and the rear face of the lower section of the post.

Similarly, also to encourage the user to maintain a healthy position during the rowing exercise, the machine further comprises a support structure for the user's feet. This structure can have different configurations, although it preferably comprises an elongated ring that is fixed to the first bar and to the second bar. This elongated ring provides different options for the support of the user's feet at different heights.

BRIEF DESCRIPTION OF THE FIGURES

Fig. 1 respectively shows a perspective view of the machine of the present invention.

Fig. 2 shows a profile view of the machine of the present invention.

Fig. 3 shows a perspective view of the seat, the chest support plate and the support structure for the feet of the machine of the present invention.

Fig. 4 shows a perspective view of the inclined bar of the machine of the present invention.

Fig. 5 shows a perspective view of the upper side of the fork of the machine of the present invention.

Fig. 6 shows a perspective view of the locking assembly of the machine of the present invention.

Fig. 7 shows a perspective view of the machine of the present invention together with a weight tower.

PREFERRED EMBODIMENT OF THE INVENTION

An example of the present invention is described below with reference to the attached figures, which show different views of the machine (1) of the present invention. In general, with the exception of the post and other additional components such as the seat, the components that make up the machine (1) of the invention are formed from stainless steel tubes welded together.

The machine (1) comprises a post (2) anchored on a footing arranged in the ground. The post (2) is anchored by means of a circular plate located at the lower end of the post (2) and provided with holes for screws, bolts or the like. The post (2) has a square cross section thick enough to withstand the stresses it will be subjected to during its useful life, and is made of stainless steel.

From the rear face of the post (2), at its lower end, protrudes a horizontal section of a first bar (3a) that supports a seat (3). After a gentle 90° curve, the horizontal section is followed by a vertical section at the upper end of which the seat (3) is fixed. Near the transition between the horizontal section and the vertical section, this first bar (3a) is supported on the ground by means of a leg or foot. It is an ergonomic seat that is arranged so that the user sits facing forwards in the direction of the post (2).

From the horizontal section of the first bar (3a) a second one protrudes essentially vertically. bar (9a). This second bar (9a) provides support for an essentially vertical support plate (9) for the user's chest that is located between the seat (3) and the post (2). The support plate (9) is located at a horizontal and vertical distance from the seat (3) suitable for the user to comfortably rest their chest on it and to maintain a healthy position during the exercise. The second bar (9a) follows an essentially vertical direction, although in this specific example it includes a couple of curves that have the purpose of bringing the support plate (9) closer to the seat (3). An additional bar (11) that connects the vertical section of the first bar (3a) to the second bar (9a) serves to ensure the rigidity of the second bar (9a), since it can suffer great loads that cause its deformation.

The machine (1) of the invention also comprises a support structure (10) for the user's feet. This support structure (10) adopts in this example the shape of an elongated ring, that is to say, two semicircles joined by two essentially straight bars, where the straight bars are oriented horizontally parallel to the rear face of the post (2). This configuration provides two options at different heights for the support of the user's feet, thus providing the machine (1) with flexibility in this regard. Specifically, one of the straight horizontal bars of the support structure (10) is attached to the second bar (9a) that supports the support plate (9) for the user's chest, and the other horizontal bar of the support structure support (10) is attached to the horizontal section of the first bar (3a) that supports the seat (3).

All this structure formed by the seat (3), the support plate (9) for the chest and the support structure (10) for the feet is separated from the post (2) by a sufficient distance so that a rotating fork (4) closed can move back and forth during the exercise. Specifically, the fork (4) has an essentially square or trapezoidal shape with a lower side attached to a joint (4a) fixed to a lower section of the post (2). The joint (4a) is rotatable around a horizontal axis parallel to the rear face of the post (2). In turn, the upper side of the fork (4) is located at such a height that it is essentially facing the shoulders of a user when he is seated on the seat (3). The upper side of the fork (4) also has a pair of handles (7) contained in the plane of the fork (4) itself to provide flexibility to the user in relation to the type of grip. Thus, either holding directly on the essentially horizontal bar that constitutes the upper side of the fork (4) or on the essentially vertical handles (7) that protrude from it, the user can pull the upper side of the fork (4) to pass it from an initial rest position to an actuated end position. In the initial rest position, the fork (4) is contained in an essentially vertical plane, while in the final actuated position the fork (4) tilts backwards as a result of the force exerted by the user.

The upper side of the fork (4) has a hooking element (4b) for one end of a drive cable (5). The cable (5), normally made of plastic-coated steel, follows a route from said hooking element (4b) to an entry in the lower part of a weight tower (100), so that the displacement of the fork (4) from its initial position of rest until the final actuated position must be carried out overcoming the force exerted by the mass of a set of weights of said weight tower (100). Specifically, in a first section, the cable (5) is directed from the hooking element (4b) towards a first pulley (6a) located on a rear side of the post (2) near its upper end. Next, the route of a second section of the cable (5) passes through a hole transversal to the post itself (2) until it reaches its front side, where there is a second pulley (6b) where the cable (5) changes direction. A third section of the route of the cable (5) is essentially parallel to the front face of the post (2) from the second pulley (6b) to a third pulley (6c) located in a lower area of the post (2). From this third pulley (6c), the cable (5) follows a horizontal route until it enters through an entrance to the weight tower (100) located in its lower area.

The machine (1) of the present invention also comprises a locking system integrated into the articulation (4a) of the fork (4) itself. This locking system is made up of a fixed circular plate (P) provided with a hole (O) in the shape of a circular arc. In turn, the fork (4) has, at its base where it is connected to the articulation (4a), a stem (V) parallel to the axis of rotation and arranged in a position displaced in relation to the position of said axis of rotation. . Thus, when the user activates the fork (4) and causes it to rotate, the stem (V) moves following a circular arc inside the hole (O). Thus, the angular length of the hole (O) is dimensioned in such a way that it restricts the allowed rotational travel of the fork (4). In this way, the fork (4) is forced to move between the initial position of rest and a determined limit actuated end position.

Claims (11)

1. Machine (1) for physical training of the back muscles outdoors, characterized in that it is configured to be connected to a weight tower (100) that allows selecting an external load to be moved, where the machine (1) understands: - a post (2) having a lower end configured to be fixed to a rigid base in a forward inclined orientation; - a seat (3) attached to said rigid base and to a rear face of the post (2) to accommodate a forward-facing user with his chest facing said rear face of the post (2); - a closed fork (4) essentially contained in a plane that is located between the post (2) and the seat (3), a lower side of the fork (4) being connected to a rotary joint (4a) fixed to a section bottom of the post (2), where the rotary joint (4a) is rotatable around a horizontal axis parallel to the rear face of the post (2), so that, when the fork (4) is in an initial rest position, it is oriented essentially vertically with its upper side located in front of the seat (3) in a suitable position for a user sitting on said seat to grasp it with their hands with their arms outstretched, while, when a user pulls said upper side of the fork (4) backwards, it causes rotation of the fork (4) until it reaches a final actuated position in which it is inclined backwards, and - A cable (5) connected to the upper side of the fork (4) and which, after passing through a set of pulleys (6a, 6b, 6c), can be connected to a weight tower (100) at the bottom, so that in such a way that the displacement of the upper side of the fork (4) when the user pulls it backwards causes a traction on the cable which, in turn, causes a set of weights arranged inside the weight tower to rise (100). Machine (1) according to claim 1, comprising a first pulley (6a) arranged next to an upper end of the post (2) on its rear face, a second pulley (6b) arranged next to the upper end of the post (2) on its front face, and a third pulley (6c) arranged next to the lower end of the post (2) on its front face, so that the cable (5) has a first section between a hooking element (4b) arranged on the upper side of the fork (4) and the first pulley (6a), a second section between the first pulley (6a) and the second pulley (6b) in which it passes through the post (2) through a transversal hole arranged next to its upper end, a third section between the second pulley (6b) and the third pulley (6c) essentially parallel to the front face of the post (2) and a fourth essentially horizontal section between the third pulley (6c) and a cable entry (5) of the weight tower (100). Machine (1) according to claim 2, further comprising a locking assembly configured to prevent the fork (4) from rotating forward in the direction of the post (2) beyond the initial rest position. Machine (1) according to claim 3, wherein the blocking assembly is integrated in the articulation (4a). Machine (1) according to claim 4, wherein the blocking assembly comprises a fixed plate (P) provided with a hole (O) in the shape of a circular arc along which a fixed rod (V) moves. to the fork (4), in such a way that the angular length of the hole (O) in the form of a circular arc restricts the allowed rotational travel of the fork (4). Machine (1) according to any of the preceding claims, wherein the upper side of the fork (4) comprises a pair of handles (7) oriented essentially parallel to the plane of the fork (4). Machine (1) according to any of the preceding claims, further comprising a support plate (9) for the user's chest contained in an essentially vertical plane located between the seat (3) and the fork (4). Machine (1) according to claim 7, wherein the support plate (9) is fixed to a first bar (9a) that is attached to a second bar (3a) connecting the seat (3) and the face rear of the lower section of the post (2). Machine (1) according to any of the preceding claims, further comprising a support structure (10) for the user's feet. Machine (1) according to claim 9, wherein the support structure (10) for the user's feet comprises an elongated ring that is fixed to the first bar (9a) and to the second bar (3a). 11. Machine (1) according to any of the preceding claims, wherein the cable (5) is made of steel and is plastic-coated.