PL245007B1 - Device for practicing physical activity with adjustable load - Google Patents

Abstract

The subject of the application is a device for practicing physical activity with adjustable load. It has a base (1) with a frame (2) attached to it, to which a first beam (4) with a seat (5) at its first end is attached in its central part by means of a first hinge (3). On the other side of the first hinge (3) a connector is attached, connected via the second hinge (6) to the first end of the second beam (7), which is connected via the third hinge (8) to the first end of the third beam, which is connected via the fourth hinge (10) is attached to the frame (2). A handle (11) is attached to the third beam, located above the seat (5). It is characterized by the fact that the connector between the first beam (4) and the second beam (7) is a guide (12) with a mechanism that locks its position on the first beam (4), in a way that allows it to be located at a distance (L) from the first hinge ( 3).

Description

Description of the invention

The subject of the invention is a device for practicing physical activity with adjustable load, enabling the load to be changed by changing the position of the adjustment lever.

From the description of patent application US2016136475A1, an apparatus for performing arm extension exercises is known, consisting of a frame, a seat, an elbow protector, an input arm assembly connected to a resistance mechanism and a manually gripped mechanism. The input arm assembly is adapted to reside in an initial stationary position that places the manually gripped mechanism in an initial exercise position that is positioned vertically above the user's elbow. The input arm assembly is rotatable about a linear axis located behind the user's elbow.

Patent application WO2016160719A1 describes an exercise device with an adjustable rotating element around which a force-transmitting material wraps clockwise or counterclockwise to provide bidirectional rotational resistance during exercise. The force transmitting material is preferably guided to remain in close proximity to the rotating member as it wraps around the rotating member.

From the description of patent application US2015151158A1, a machine for simultaneously or independently performing pressing movements with hands and feet is known. The machine has a base with front and rear ends, two or more linear slide rails. The upper body user support and lower body user support slide on linear rails that are located near opposite ends of the base frame, the upper body user support and lower body user support work together to move in opposite, converging and divergent inclination and linear movement patterns while the machine is running.

From the patent description US10737131B2 there is known a device for triceps press exercises with a movable support for the user, which supports the user in a sitting position. The exercise machine includes a linkage assembly that allows the user's movable bracket to tilt while the user performs a triceps exercise. As the user extends the arms from the exercise start position to the exercise end position, the user's support frame - and therefore the user's torso - tilts progressively backwards. The user's natural response to this leaning sensation is to move the head forward, which encourages the user to rest their lower back firmly in a stable position on the back cushion, which in turn reduces the risk of injury associated with excessive lower back arching.

Patent application CN105920799A discloses a multifunctional exercise furniture that includes a bed body. The four corners of the bed body are equipped with a column, the ladders are supported on the upper ends of the columns, the tops of the ladders are equipped with storage cabinets. There is a puck on both sides of the ladder. A steel cable is wrapped around the pulley. One end of the wire rope is equipped with a horizontal pull rod, and the counterweight is suspended on the other end of the wire rope. On one side of the counterweight there is an electric bicycle, under the horizontal pulley there is a leg extension trainer, which is also connected to the counterweight by a cable, the bed body is equipped with a traction training device placed on one side of the leg extension device, and two columns At one end of the bed body there are devices for massaging the lower legs.

From the patent description US10166435B2 there is known a device for back extension exercises comprising: a frame, a seat with a pelvic stabilizing pad having a contact surface of the lower back, an input arm assembly connected by a first connection to a first resistance mechanism, an input arm assembly including a mechanism gripped manually and placed on the device in such that the input arm assembly can rotate from an initial stationary position along a path of movement toward the pelvic stabilization pad under the influence of resistance provided by one or both of the resistance mechanisms. The first resistance mechanism is adapted to increase resistance as the degree of rotation of the input arm assembly increases along a path of movement from the initial stationary position rearward toward the pelvic stabilization pad.

Patent application US2007232464A1 discloses an exercise machine that has a seat beam for supporting the user, pivotally connected to a base frame at a pivot point on the frame. A link is connected to the seat beam, the end of which is pivotally connected to the handle arm at the pivot point. An adjustment slider is connected to the seat beam and the link at the lower end of the link. User sliding adjustment changes resistance by changing mechanical advantage. The seat/knee cushion is lowered close to the floor, where the lowest cushion position is set in the natural, default position for users to enter and exit.

From the description of patent application KR20160080961A, a multifunctional sports apparatus is known, which consists of a leg extension assembly and an iron rod that supports the user's weight. A part of the frame is formed in a rectangular space, which prevents shocks through movement and supports the weight. The load is placed on the surface of the ankle. The frame part is connected to the load with a cable.

From the description of utility model CN201744120U, a training machine is known that has a front frame welded to a branch pipe. The two ends of the U-shaped frame are welded to two small rotating shafts respectively. The rear rotating shaft seat is welded to the rear bending seat tube and the rear rotating shaft, which is mounted in the rear rotating shaft. The vibration-absorbing sleeve and the vibration-absorbing washer are made of rubber or plastic. A saddle is mounted on the rear bending seat tube, and a saddle limiting actuator is mounted on the ground. The top of the front frame is welded to the handle and the pedal tube is welded below the front frame.

From the description of patent application US5674161A, an exercise device using the user's own weight as a base is known. It consists of a main support and an auxiliary support, which contain two parallel and spaced elements. The pulling element, comprising two parallel and spaced side walls, is rotatably mounted on a shaft. The handlebar has an end permanently connected to and between the two side walls of the pulling member, and two gripping portions extending outward and at an angle from another end of the handlebar. The steering wheel is connected to the pulling member by threading a locking pin through a pair of desired adjustment holes formed in the side walls of the pulling members and on the steering wheel so that the steering wheel can be adjusted in its angular position relative to the pulling member.

Patent application US2004116258A1 discloses an exercise device that has shock absorbing elements, one end of which is pivotally connected to each side of the lower rocking bar element and the other end is pivotally connected to each corresponding side of the connecting bar so that the lower rocking bar element returns to a stationary position at a moderate pace. A U-shaped handle is attached to the front end of the upper rocking element.

From the description of utility model CN202376665U, a two-person pushing training device is known, which has a part for pushing the seat and is equipped with a handle, a seat, two connecting rods and a supporting rod. The device has a vertical pole that is mounted in the center of the base. On both sides of the pillar there is a part to push the seat, respectively. The seat pushing part is equipped with a handle, a seat, two connecting rods and a support rod. The supporting rod is permanently connected to the vertical post. The handle is connected to one connecting rod. The connecting rods are connected to each other by a bearing.

From the description of utility model CN202122793U, a seated type spring exercise device is known, which has a handrail frame, the upper part of which is mounted on a vertical pole via a connecting shaft. The side part of the lower connecting socket is attached to the vertical pole via the lower connecting shaft. The lower connecting shaft is connected to the rear end of the concave rotating shaft. A support frame is mounted on the side part of the vertical post and the lower end of the connecting socket of the upper part.

From the description of patent application US5580339A, an adjustable device for exercises simulating horse riding is known, which has a bar for attaching foot support in a sitting position, on which a rail with a rotatably connected handle is mounted. The seat post is pivotally connected to the center of the frame on a pivot axis and connected to the bar. The handle is pivotally connected to the frame and a lever connects the handle to the guide. When the guide is moved to one side of the pivot axis, the seat cushion can be raised by pulling the handle. When the guide is moved to the other side of the pivot axis, the seat cushion can be raised by pushing the handle up.

The closest solution to the present invention is known from the description of patent application US5352171A. It shows an exercise machine that uses the exerciser's body weight as the load. It includes a base, mounting rod, upper swing rod, lower swing rod, expandable connecting rod, seat pad, backrest, handle and shock absorber. The mounting bar can be adjusted depending on the height of the exerciser. The length of the expandable connecting rod member can be adjusted by adjusting the pivot position of the upper swing rod member or the length of the mounting rod member.

The purpose of the invention is to regulate the load force resulting from the use of the user's weight for exercise.

The subject of the invention is a device for practicing physical activity by lifting the load resulting from its own weight, with adjustable load, having a base located horizontally on the ground, with a frame attached to it having two parallel, vertically arranged plates, to which a first hinge with a pin arranged perpendicular to frame plates, a first beam is mounted in its central part with a seat located at its first end outside the frame area. On the other side of the first hinge, a connector is mounted on the beam, which is connected via a second hinge, with a pin placed perpendicular to the frame plates, with the first end of the second beam, mounted vertically to the base. However, the other end of the second beam is connected by means of a third hinge, with a pin placed perpendicular to the frame plates, to the first end of the third beam, which is attached to the frame with its other end by means of a fourth hinge, with a pin placed perpendicular to the frame plates. A handle is attached to the other end of the third beam, located above the seat. Its essence is that the connector between the first beam and the second beam is a guide with a mechanism that locks its position on the first beam, in a way that allows it to be located at a distance from the first hinge.

In variants of the solution, the element blocking the position of the guide on the first beam is a screw screwed into the hole located in the first beam in its axis, and the end of the screw is attached to the guide.

Under the first beam, a guide is attached parallel to it, to which a weight is attached.

The element that locks the position of the guide on the first beam is the pin, or the element that locks the position of the guide on the first beam is the gear.

There is a compression spring between the frame and the first beam.

The seat is attached to the first beam by a mechanism that determines the distance between it and the first hinge.

A beneficial effect of a device for practicing physical activity with adjustable load is that it allows obtaining a variable load value by changing the position of the shaped sleeve on the seat profile, and thus allows flexible selection of the load for exercisers. The device is simple in design and allows quick load adjustment.

Selection of the load size is possible by changing the position of the sleeve on the arm by changing the distance between it and the hinge. The distance can be changed using a pin, screw, reel or gear. In this version, it is also possible to additionally load or relieve the seated person by means of an additional weight moved from the beam to which the seat is attached.

The device according to the invention is presented in embodiments in the drawing, in which the individual figures show:

Fig. 1 - perspective view of the device in a half-section of the first embodiment, Fig. 2 - front view of the device in a half-section of the first embodiment, Fig. 3 - front view of the device in a half-section of the second embodiment, Fig. 4 - view from the front of the device in a half-section in the third embodiment, Fig. 5 - a front view of the device in a half-section in the fourth embodiment, Fig. 6 - a front view of the device in a half-section in the fifth embodiment, Fig. 7 - a front view of the device in a half-section in the fifth embodiment, Fig. the first embodiment with the interaction forces marked, Figs. 8.1-8.5 - diagrams of the mechanism nodes freed from constraints in the first example.

The device for practicing physical activity by lifting the load resulting from the user's own weight with adjustable load in the embodiments consists of a base 1 located horizontally on the ground, attached to the ground, to which a frame 2 is attached in the central part, having two parallel, vertically arranged plates connected plates to form the shape of a box. In its central part, the central part of the first beam 4 is attached using the first hinge 3 with a pin arranged perpendicular to the frame boards 2, forming a lever. At the first end of the first beam 4, a seat 5 is attached, located outside the area of the frame 2.

PL 245007 Β1

The seat 5 is additionally attached to the frame 2 by means of an additional beam 19 and an additional hinge 20 with a pin placed perpendicular to the frame plates 2. On the other side of the first hinge 3, a connector is attached, connected by means of a second hinge 6 with a pin placed perpendicular to the frame plates 2. , with the first end of the second beam 7. The second beam 7 is connected at its other end by means of a third hinge 8 with a pin arranged perpendicular to the frame boards 2, with the first end of the third beam 9. The other end of the third beam 9 is attached by means of the fourth hinge 10 , with a pin placed perpendicular to the frame plates 2, to the frame 2. Additionally, a handle 11 is attached to the end of the third beam 9, located above the seat 5. The connector of the first beam 4 with the second beam 7 is a guide 12 with a mechanism that locks its position on the first beam 4 , in a way that allows it to be located at a distance from the first hinge 3.

In the first embodiment shown in Fig. 1 and 2 of the drawing, the mechanism that locks the position of the guide 12 is a screw 13 screwed into the hole located in the first beam 4 in its axis. The end of the screw 13 is attached to the guide 12.

In the second embodiment shown in Fig. 3 of the drawing, the mechanism that locks the position of the guide 12 is a screw 13 screwed into the hole located in the first beam 4 in its axis. The end of the screw 13 is attached to the guide 12. Additionally, a guide 14 is attached parallel to it under the first beam 4, to which a weight 15 is attached.

In the third embodiment shown in Fig. 4 of the drawing, the mechanism that locks the position of the guide 12 on the first beam 4 is the pin 16.

In the fourth embodiment shown in Fig. 5, the mechanism that locks the position of the guide 12 on the first beam 4 is a friction gear 17.

In the fifth embodiment shown in Fig. 6 of the drawing, the mechanism that locks the position of the guide 12 is a screw 13 screwed into the hole located in the first beam 4 in its axis. The end of the screw 13 is attached to the guide 12. Additionally, there is a compression spring 18 between the frame 2 and the first beam 4.

The operation of the load-adjustable physical activity device according to the invention is that the user sits on the seat 5 located on the first side of the first beam 4, the middle part of which is attached to the middle part of the frame 2 by means of the first cylindrical joint 3. By pulling with the hands the handle 11 located at the other end of the third beam 9 causes the first end of the third beam 9 to move downwards, which, via the second beam 7, lifts the second end of the first beam 4 upwards. The distance between the first hinge 3 and the guide 12 mounted on the first beam 4 and attached to the end of the second beam 7 determines the force that the user must apply to fully perform one exercise. As the distance increases, the force needed to perform the exercise decreases.

Additional solutions regarding changing the distance of the seat from the first hinge 3 and moving the load 13 on the guide 12 allow for a more precise adjustment of the load to the one required for a given user.

Analytical model of the solution

To perform calculations on the model shown in Fig. 1, a flat substitute model was created, shown in Figs. 7 and 8, in which forces perpendicular to the plane are not considered. To perform the calculations, the notation of the AH kinematic nodes, the lengths of the Li-Ls sections and the on-as angles defining their location was introduced. Additional dimensions ho, Xo, hs, hg were also introduced. The calculations take into account the weight of the mechanism structure Qi-Qg and the user's weight Q, as well as the position coefficients of the centers of gravity of each element Lir—Lsr. The user's center of gravity Q and the chair Qg are separated from the node F in the horizontal direction by dimensions L-io and Lg, respectively. In Figs. 8.1-8.5, the system is freed from constraints and the reactions of internal forces in the system Rix-Rsx and Ri _y -Rsy are assigned. Only active reactions affecting the gears were taken into account and reactions on non-sliding supports were omitted.

The balance of forces and moments takes the form:

F — 2 L _r L ₂ cos(a ₁ ) + L| — Q _: (L ₁ L ₁ . cos( cc — a ₃ + 90°) + L ₂ sin(a ₃ ))

-L ₂ L _2r Q ₂ sin (a ₃ ) + L ₃ L _3r Q ₃ cos (a ₂ ) - L ₃ R _lx sin (ct ₂ ) - L ₃ R _ly cos(a ₂ ) = 0, (1) —L ₄ L _4r Q ₄ cos(a ₄ ) - L ₄ R _2x sin(a ₄ ) + L ₄ R _2y cos(a ₄ ) = 0, (2)

PL 245007 Β1 ^R zx R _lx — θ.(2)

-Q4 “ ^R ly + ^R 2y = 0-(4)

-R ₂ X ih5 cos(a ₅ ) - L _s sin(a ₅ )) -I- R _2y (h5 sin(a ₅ ) + L ₅ cos(a ₅ )) + L ₅ Q _s cos(a ₅ ) + L _æ U _jr Qe cos(a ₅ ) = -L ₇ L _7r Q ₇ cos(a _E ) — L ₇ R _3x sin (a _E ) - L ₇ R _3y cos (a _E ),(5)

R _3x - ^R ix + F cos(a ₀ ) = 0,(6)

-Q — Q ₉ + R _3y - R _4y - F sin(cx_0) = 0.(7) h9 R _4X — Ljo Q — L ₉ Q ₉ — 0.(8)

-Lg L _er Qg cos (a ₅ ) + Lg R _lx cos (ct ₅ ) + Lg R _4y sin (a ₅ ) = 0(9)

L ₃ cos(a ₂ ) + L ₄ cos(a ₄ ) — L ₅ cos(a ₅ ) — h5 sin(a ₅ ) = x0,(10)

L ₃ sin(a ₂ ) + L ₄ sin(a ₄ ) - L ₅ sm(ct ₅ ) +h5cos(a _s ) = hO(11)

The solution to the above equations is the following very complex function:

_{F [ L ​ ​ ​ ​ ​ ​ ​} cos(a ₄ )sin(a ₂ ) ~ h5 h9 L ₃ L _4r Q ₄ cos(a ₄ )sin(a ₂ ) — L ₃ L ₇ Lg Q ₉ cos(a ₄ )sin(a ₂ ) — h9 L ₃ L ₇ Qcos(a ₄ )cot(a _s )sin(a ₂ )

- h9 L ₃ L _4r L _s Q ₄ cos(a ₄ )cot(a _s )sin(a ₂ ) - h9 L ₃ L ₅ Q _s cos(a ₄ )cot(a ₅ )sin(a ₂ ) — h9 L ₃ L _ó L _6r Qc cos(a ₄ )cot(a ₅ )sin(a ₂ )

H9 Lg Ly Ly^· Q ₇ cos(n ₄ )cot(a ₅ )sin(a ₂ ) — h9 L ₃ L ₇ Q ₉ cos(a ₄ )cot(a ₅ )sin(a ₂ ) + L ₁₀ L ₃ L ₇ Q cos(a ₄ )cot(a _s ) ² sin (a ₂ )

- h9 L ₃ L ₇ L _8r 0.8 cos(a ₄ )cot(a ₅ ) ² sin (a ₂ ) + L ₃ L ₇ L _g Q ₉ cos(a ₄ )cot(a ₅ ) ² sin (a ₂ ) + h9 L ₂ L _s Q ₄ cos (a ₄ ) sin (a ₃ ) + h9 L ₂ L _2r L _s Q ₂ cos (cr ₄ ) sin (a ₃ ) — h5 h9 L ₂ Qi cos (a ₄ ) cot (a ₅ ) sin (ct ₃ ) — h5 h9 L ₂ L _2r Q ₂ cos(a ₄ )cot(a _s )sin(a. ₃ ) + h5 h9 L ₂ Q ₁ sin(a. ₃ )sin(a ₄ ) + h5 h9 L ₂ L _2r Q ₂ sin (a ₃ ) sin (a ₄ ) + h9 L ₂ L ₅ Q _t cot (a ₅ ) sin (a ₃ ) sin (a ₄ ) + h9 L ₂ L _2r L ₅ Q ₂ cot(a _s )sin(ct ₃ )sin(a ₄ )

- L ₃ cos(a ₂ ) (h9 (L _3r Q ₃ + Q ₄ - L _4r Q ₄ ) cos(a ₄ )(L ₅ - h5 cot(a ₅ )) + C^io L ₇ Q + h5 h9 L _3r Q ₃ + h5 h9 Q ₄ + L ₇ L ₉ Q ₉ + h9 (L _3r L _s Q ₃ + L _s Q ₄ + Ls Qs + L _6r Q ₆ + L ₇ (Q + L _7r Q ₇ + Q ₉ )) cot(a ₃ )

- L ₇ (L ₁₀ Q - h9 L _8r Q _b + L _g Q ₉ )coi(ct ₅ ) ² ) sin(a ₄ )) + h9 L ₄ L _lr Q ₁ cos( 90° + — a ₃ ) csc (a ₅ ) (—h5 cos(a ₄ + a ₅ ) + L ₅ sin(a ₄ + a ₅ ))]}

4- {h9 [L ₃ L ₇ cos(a ₀ — a _z — α ₄ — a ₅ ) — L ₃ L ₇ cos(a ₀ + α ₂ + α ₄ — a ₅ ) + 2 Jl ² + L ² — 2 Li L ₂ cos(a ₁ ) (—h ₅ cos(a ₄ + α _Ξ ) + L _s sin(a ₄ + “s))]} (12)

List of markings:

- Base

- Frame

- First hinge

- First beam

- Seat

- Second hinge

- Second beam

- Third hinge

- Third beam

- Fourth hinge

- Handle

- Guide

- Runner

- Weight

- Pin

- Screw

- Gear

- Compression spring

- Additional beam

- Additional hinge

Claims (7)

1. A device for practicing physical activity by lifting the load resulting from the user's own weight, with adjustable load, having a base (1) placed horizontally on the ground with a frame attached to it (2) having two parallel, vertically arranged plates, to which a first hinge (3) with a pin arranged perpendicular to the frame plates (2), the first beam (4) is mounted in its central part with a seat (5) located at its first end outside the frame area (2), and on the other side of the first hinge (3) a connector is mounted on the beam (4), which is connected via a second hinge (6), with a pin placed perpendicular to the frame plates (2), with the first end of the second beam (7), attached vertically to the base (1), while the second the end of the second beam (7) is connected by means of a third hinge (8), with a pin arranged perpendicular to the frame plates (2), to the first end of the third beam (9), which, with the other end, is connected by a fourth hinge (10), with a pin arranged perpendicular to the frame plates (2), is attached to the frame (2) and a handle (11) is attached to the other end of the third beam (9), located above the seat (5), characterized in that the connector between the first beam (4) and the second beam (7) is a guide (12) with a mechanism that locks its position on the first beam (4), in a way that allows it to be placed at a distance (L) from the first hinge (3). 2. The device according to claim 1, characterized in that the element blocking the position of the guide (12) on the first beam (4) is a screw (13) screwed into a hole located in the first beam (4) in its axis, and the end of the screw (13) is attached to the guide (12). ). 3. A device according to claim 1, characterized in that a guide (14) is mounted under the first beam (4), parallel to it, and a weight (15) is attached to it. 4. The device according to claim 1, characterized in that the element blocking the position of the guide (12) on the first beam (4) is a pin (16). 5. The device according to claim 1. 1, characterized in that the element blocking the position of the guide (12) on the first beam (4) is the gear (17). 6. The device according to claim 1. 1, characterized in that there is a compression spring (18) between the frame (2) and the first beam (4). 7. The device according to claim 1, characterized in that the seat (5) is attached to the first beam (4) by means of a mechanism that determines the distance between it and the first hinge (3).