CN201253448Y - Curve guide rail movement mechanism of elliptical machine - Google Patents

Abstract

The utility model relates to a fitness equipment, and in particular to a curved guide rail motion mechanism of an elliptical machine capable of adjusting the motion trajectory and motion feeling of human feet. The utility model achieves the purpose of simply and effectively adjusting the motion trajectory of the foot pedal of the elliptical machine by changing the linear guide rail of the elliptical machine into a curved guide rail. At the same time, by adjusting the connection method between the foot pedal and the support rod, the force and angle relationship between the sole of the foot and the foot pedal is further improved, thereby reducing foot exercise fatigue and sports injuries to the lower limbs. The curved guide rail motion mechanism of the elliptical machine described in the utility model includes a support rod, a foot pedal, a roller and a guide rail. When the support rod moves under the drive of the foot pedal, the roller installed at the lower end of the support rod moves back and forth on the guide rail. It is characterized in that part or all of the guide rail is a smooth curve.

Description

Curve guide rail movement mechanism of elliptical machine

technical field

The utility model relates to a fitness equipment, in particular to a curved guide rail movement mechanism of an elliptical machine capable of adjusting the movement track and movement feeling of human feet.

Background technique

The elliptical machine is a kind of sports and fitness equipment that has gradually become popular. The ordinary elliptical machine moves along an approximate elliptical trajectory through the pedals connected to the left and right support frames, which can simulate people's walking, jogging and climbing steps. department sports. No. 200610078954.X Chinese patent document mentions a kind of elliptical machine that adopts crank and guide rail structure. The elliptical takes up less space and provides plenty of travel for the feet while providing a somewhat ergonomic way of moving the pedals.

When the human body is walking, jogging, and climbing steps, the trajectory of the foot is close to an elliptical curve. An important goal of the design of the elliptical machine is to simulate the trajectory of the foot during the above-mentioned sports as accurately as possible. At the same time, it is necessary to adjust the movement trajectory of the pedals of the elliptical machine from the perspective of kinematics and exercise physiology, so that the human body can reasonably exercise the muscle groups of each leg and foot when exercising on the elliptical machine, and reduce sports injuries as much as possible.

Contents of the invention

The utility model realizes the purpose of simply and effectively adjusting the motion trajectory of the pedals of the elliptical machine by changing the linear guide rail of the elliptical machine into a curved guide rail. At the same time, by adjusting the connection method between the foot pedal and the support rod, the force and angle relationship between the sole of the foot and the foot pedal are further improved, thereby reducing the sports fatigue of the foot and the sports injury of the lower limbs.

The curved guide rail movement mechanism of the elliptical machine described in the utility model includes a support rod, a pedal, a roller and a guide rail. When the support rod moves under the drive of the pedal, the roller installed at the lower end of the support rod moves forward and backward on the guide rail. The movement is characterized in that part or all of the guide rail is a smooth curve.

For different elliptical machine designs, it is also possible to use the way that one end of the crank moves back and forth on the curved guide rail through the roller.

The smooth curve mentioned in the utility model refers to the smoothness of the curve so that when the human body moves on the pedals, there is no obvious bumpy feeling, which is not smooth in the mathematical sense.

Figure 1 shows the kinematic mechanism of an elliptical machine with linear guides. Fig. 3 is a simplified model of Fig. 1, in which the relationship between the position a of the pedal and the position of the contact point A of the support rod and the driving wheel determines the trajectory of the pedal. Figure 4 shows the motion track curve of the pedal when the pedal is just in the middle of the support rod, where the dotted line is an elliptic curve for comparison and reference, and it can be seen that the curve is relatively close to the elliptic curve. When one end of the support rod rotates around the driving wheel for a circle, the four positions A, B, C, and D passed correspond to four points a, b, c, and d on the motion track curve of the pedal. The four line segments Aa, Bb, Cc, Dd in this diagram are completely equal. It is worth noting that the highest point on this approximate elliptical locus curve is a, and the lowest point is c, and the pedal can obtain the downward force of the foot in the sections a to c.

The above-mentioned curve is obtained when the other end of the support bar slides back and forth along the linear guide rail. When some parts of this guide rail become curved, the motion track curve of the pedal will change accordingly.

Fig. 5 is a schematic diagram of the motion trajectory curve of the pedal relative to the curved guide rail in Fig. 2 . It can be seen that compared with the trajectory curve in Figure 4, the trajectory close to point d in this figure has risen a little, and the part closer to point d has risen more. It is worth noting that the highest point of this curve is no longer a, but moved back to point M, which means that when the pedal moves to point M, the downward force of the foot can be used. Correspondingly, the rise of point d means that when one pedal moves to point b, where the downward pushing force of the foot is very large, the other pedal can quickly rise to point d, which is relatively high.

After comparative analysis, it can be known that when the highest points M and d on the motion trajectory are relatively close, the downward force of the human body's feet can be effectively distributed optimally, thereby improving the sports experience.

Description of drawings

Fig. 1 is the motion mechanism schematic diagram of the elliptical machine that adopts linear guide rail;

Fig. 2 is a kind of embodiment schematic diagram that the utility model adopts curved guide rail;

FIG. 3 is a simplified model diagram of FIG. 1 . Where a is the position of the pedal, and A is the contact point between the support rod and the driving wheel;

FIG. 4 is a model diagram of the dynamic motion track in FIG. 3 . Among them, the positions a, b, c, and d of the pedal correspond to the four points of contact positions A, B, C, and D of the support rod and the driving wheel respectively;

Fig. 5 is a schematic diagram of the motion track curve relative to the pedal of the curved guide rail in Fig. 2;

Fig. 6 is a schematic diagram of another embodiment of the utility model using a curved guide rail.

In the above figure: 1. guide rail; 2. roller; 3. spring; 4. pedal; 5. connecting pivot; 6. support rod; 7. driving wheel.

Detailed ways

The technical features and beneficial effects of the utility model will be further described below according to preferred embodiments of the utility model and accompanying drawings.

Fig. 2 is a schematic diagram of an embodiment of the utility model. The left part of the guide rail 1 gradually rises with a smooth curve. When one end of the support rod 6 rotates around the driving wheel 7, the roller 2 at the other end moves back and forth on the guide rail 1. When the roller moves to the raised curve part, it will The footrest 4 is also relatively raised, and the relative here refers to the position of the footrest relative to the linear guide rail situation.

When the roller moved to a high place, the other pedal on the guide rail on the other side was in the position where it is most easy to use force.

In this embodiment, the curved portion and the straight portion of the guide rail 1 are connected tangentially, so as to avoid bumpy feeling and affect the feeling of movement.

In this embodiment, one end of the pedal 4 is pivotally connected to the support rod 6 through the connecting pivot 5 , and the other end is elastically connected to the support rod 6 through the spring 3 . When the pedal moves to different positions, the spring will be compressed or bounced accordingly as the force and angle of the sole of the foot change, so that the inclination angle of the pedal is adjusted accordingly to meet the needs of the sole of the foot, so as to achieve Good ergonomic comfort.

Fig. 6 is a schematic diagram of another embodiment of the utility model. In this embodiment, both ends of the rail are smooth curves.

It should be noted that the curved guide rail to be protected by the utility model is not limited to the situation of the above two embodiments, as long as the guide rail is not linear, it belongs to the scope of protection of the utility model.

Claims (5)

1. A curved guide rail motion mechanism of an elliptical machine, comprising a support bar (6), a pedal (4), a roller (2) and a guide rail (1), and the roller (2) is installed at the lower end of the support bar (6), It is characterized in that part or all of the guide rail (1) is a smooth curve. 2. The curved guide rail movement mechanism of the elliptical machine according to claim 1, characterized in that, one side of the guide rail (1) is a smooth curve, and the closer to the edge of the guide rail (1), the higher the curve is. 3. The curved guide rail movement mechanism of the elliptical machine according to claim 1, characterized in that, both sides of the guide rail (1) are smooth curves, and the closer to the edge of the guide rail (1), the higher the curve. 4. The curved guide rail movement mechanism of an elliptical machine according to any one of claims 1 to 3, characterized in that, the curved portion on the guide rail (1) is connected tangentially to the straight portion. 5. The curved guide rail movement mechanism of an elliptical machine according to any one of claims 1 to 3, characterized in that a spring is installed under one end of the pedal (4).

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