JPH0745241Y2 - Leg strength training machine - Google Patents

Description

[Detailed description of the device]

[0001]

This invention relates to a leg strength training machine.

[0002]

2. Description of the Related Art A strength training machine selects a weight having a desired weight, loads it on an operating portion, and rotates, elevates, and lowers the operating portion.
Alternatively, by moving it back and forth, it is possible to train the muscle strength of a specific part.

By the way, in order to train the muscular strength of the legs, an arm coaxial with a rotating body in which a belt or the like connected to the weight is wound is rotatably attached to a front portion of a seat fixed to a base. There is provided a leg strength training machine in which a shaft is supported, a roller pad is provided on an arm, and a seated person hangs the ankle on the roller to repeatedly raise and lower the leg.

[0004]

However, according to the above-mentioned conventional leg strength training machine, the position of the roller pad is fixed in many cases, and therefore the adjustment is made according to the difference between male and female and the size of the height. Since it was not possible and the angle of the roller pad at the start (at the start of training) could not be adjusted, proper and sufficient training could not be performed.

Therefore, the arm that pivotally supports the roller pad engages the inner tube and the outer tube so as to be capable of expanding and contracting in the longitudinal direction, and also through holes are bored in the longitudinal direction at predetermined intervals, respectively, and the transparent holes are formed. While there were some that allowed the position of the roller pad to be adjusted by inserting a pin or push screw into the hole, the roller pad is long and relatively heavy so that both legs can be hung, and the roller pad Since the arm has the same balance weight as the weight of No. 1 and is axially supported by the arm, and the weight of the arm is loaded, it is not easy for a weak person to lift the roller pad to adjust the height. Further, even in this example, the angle of the roller pad at the start could not be adjusted.

[0006] Therefore, the present invention is simple even for weak people,
(EN) A leg strength training machine capable of quickly and easily adjusting a roller pad to an optimum position for itself and performing appropriate and sufficient strength training.

[0007]

A leg strength training machine according to the present invention rotatably supports a pad angle restricting plate having a roller pad axially supported on a lower end portion of an arm, and an axis of the pad angle restricting plate. was bored hole at predetermined intervals in a predetermined radius of a circle around, provided with a retractable pin translucent hole in the arm, the balance weight is fixed to the upper end of the arm, the balance An intermediate portion between the weight and the roller pad is rotatably fitted on a shaft supported by a base, an arm angle regulating plate and a cam plate are fixed to the shaft, and the axis is centered on the arm angle regulating plate. bored a hole at predetermined intervals in a predetermined radius on the circumference, the retractable pin into the transparent holes formed in the arm, and a feature that it has to be loaded with the weight of the weight to the cam plate To do.

[0008]

When adjusting the vertical position of the roller pad, pull out the pin connecting the pad angle regulating plate and the arm, rotate the pad angle regulating plate as desired about its axis, and match at that position. Insert the pin into the through hole.

When adjusting the position of the roller pad in the front-rear direction, the pin that connects the arm angle regulating plate and the arm is pulled out, the arm is tilted as desired about its axis, and the through hole is matched at that position. Insert the pin into.

When both legs are put on the roller pad and repeatedly raised and lowered, the shaft connected to the arm angle regulating plate via the pin is rotated, and the cam plate fixed to the shaft is loaded with the weight. Since the belt is pulled, the weight of the weight is loaded on the roller pad.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS. In FIGS. 1 and 2, 1 is a base, 2 is a seat fixed to the base 1 via a support portion 3, and 4 is rotatably supported by a shaft 5 on a base 1 corresponding to the front part of the seat 2. An arm, 6 is a cam plate fixed to the shaft 5, 7 is a belt for fixing one end of the cam plate 6 to load a desired weight on the arm 4, and 8 and 8 guide the belt 7. A sheave rotatably supported on the upper part of the base 1,
Reference numeral 9 is a known weight connector, and 10 is a known weight that is connected to the weight connector 9. The belt 7 may be replaced with a wire.

As shown in FIGS. 3 and 4, the arm 4 has a substantially fan-shaped pad angle regulating plate 11 at its lower end which is rotatably supported by a shaft 12 so as to regulate the pad angle. A roller pad 14 is rotatably supported by a shaft 13 fixed to the plate 11. The pad angle regulating plate 11 is provided with through holes 15 at predetermined intervals on a circle having a predetermined radius centered on the shaft 12, and at a portion further from the center than the center, a predetermined radius centered on the shaft 12 is formed. An arcuate elongated hole 16 is provided on the circumference. The arm 4 is provided with a pin 17 capable of moving forward and backward through the through hole 15, and a protrusion 18 that engages with the arc-shaped elongated hole 16.
Is provided on the arm 4.

The arm 4 is loosely fitted to one end of a shaft 5 by a bearing 19 and rotatably supported by the base 1, and a balance weight 20 is fixed to an upper end of the shaft 5 with respect to the shaft 5. And
A well-known pin 21 is provided in the vicinity of the balance weight 20 so as to be able to advance and retreat in the orthogonal direction. An arm angle regulating plate 22 for engaging and disengaging the pin 21 is fixedly provided on the shaft 5. The arm angle regulation plate 22 has a substantially fan shape, and through holes 23 are formed at predetermined intervals on a circumference of a predetermined radius centered on the shaft 5. The pin 21 is engaged with and disengaged from the through hole 23. Further, an arc-shaped elongated hole 24 is formed on the arm angle regulation plate 22 at a position closer to the center than the through hole 23 and located on the circumference of a predetermined radius centered on the shaft 5, and the arc-shaped elongated hole 24 is engaged with the arc-shaped elongated hole 24. Protrusion 2 to fit
5 is provided on the arm 4.

A cam plate 6 is fixed and integrally attached to the other end of the shaft 5. The cam plate 6 is a non-circular body to which one end of the belt 7 is fixed, and a groove 26 into which the belt 7 is fitted is formed on the outer peripheral surface. The shape of the cam plate 6 is for varying the load of the weight 10 pulled by the belt 7 so that the load becomes lighter and heavier first and then becomes constant.

To explain the operation of the above embodiment, a person sitting on the seat 2 hangs his / her both feet on the roller pad 14 and repeats raising and lowering. In that case, the position of the roller pad 14 is too low, or If it is too high, the trainer himself goes down from the seat 2 and the pin 17
When the pad angle regulating plate 11 is removed and rotated about the shaft 12 within the range of the arcuate elongated hole 16, the position of the roller pad 14 changes, so the pin 17 is inserted into the through hole 15 at the desired position. To do. In FIG. 5, when the pad angle regulating plate 11 is rotated clockwise about the shaft 12, the position of the roller pad 14 is raised, and vice versa. Thus, since the roller pad 14 is supported by the pad angle regulating plate 11, the weight of the roller pad 14 is not supported, and therefore the vertical position can be changed easily, quickly and easily by only the force of rotating the roller pad 14.

Furthermore, when it is desired to adjust the angle of the roller pad 14 at the start (at the start of training), the pin 21
And the arm 4 is rotated about the shaft 5 to the left or right within the range of the arc-shaped elongated hole 22, and the pin 21 is moved to the desired position.
If the roller pad 14 is inserted and fixed in the through hole 23,
The position of can be changed from directly below the front portion of the seat 2 to any desired position in the front or rear. Thus, since the arm 4 has the balance weight 20 corresponding to the roller pad 14, the front and rear positions thereof can be changed easily, quickly and easily simply by rotating the arm 4 without supporting its weight. In FIG. 5, when the arm 4 is rotated clockwise around the shaft 5, the position of the roller pad 14 moves to the front of the lower portion of the seat 2, and vice versa.
The arm 4 includes a roller pad 14 and a pad angle regulation plate 11
However, since it has the balance weight 20 commensurate with its weight, the force for rotating the arm 4 around the shaft 5 can be light. Therefore, the front-rear position of the roller pad 14 can be changed easily, quickly and easily by only the force of rotating the arm 4.

Thus, when the position adjustment of the roller pad 14 is completed, the seat 4 is seated and both legs are hung up and down on the roller pad 14 so that the arm 4 can rotate the arm angle regulating plate 22 connected by the pin 21 to the shaft 5. , And the shaft 5 rotates the cam plate 6. Therefore, the cam plate 6 pulls the belt 7 along the groove 26 thereof, the belt 7 raises the weight connecting member 9, and the weight connected to the weight connecting member 9 is loaded on the roller pad 14.

The present invention can also be used in a leg strength training machine for putting the side or the back of the thigh against the roller pad 14 to move the leg up and down.

[0019]

[Effects of the Invention] According to the invention described above, the leg strength training machine is capable of changing the vertical and forward and backward positions of the roller pad simply, quickly and easily, so that the height and height of the roller pad can be adjusted according to the height. The angle of the roller pad at the start of the exercise can be adjusted by a girl or a weak person by himself or herself to exercise the muscle strength in an optimal state for him or herself. Therefore, appropriate and sufficient strength exercise can be achieved.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a sectional side view of a main part.

FIG. 4 is a sectional front view of a main part.

FIG. 5 is an explanatory view of the operation of main parts.

[Explanation of symbols]

4 ... Arm, 5 ... Shaft, 6 ... Cam plate, 7 ... Belt,
11 ... Pad angle regulation plate, 14 ... Roller pad, 1
5, 23 ... Through hole, 17, 21 ... Pin, 22 ... Arm angle regulating plate

Claims (1)

[Scope of utility model registration request] 1. A pad angle regulating plate, which pivotally supports a roller pad, is rotatably pivoted to a lower end portion of an arm, and is arranged at predetermined intervals on a circle having a predetermined radius around the axis of the pad angle regulating plate. bored through hole, provided with a retractable pin on the arm in the transparent hole, the balance weight is fixed to the upper end of the arm, it is supported intermediate portion of the roller pad and the balance weight to the base Rotatably fitted to the shaft
An arm angle restricting plate and a cam plate are fixed to the shaft, and through holes are formed in the arm angle restricting plate at predetermined intervals on a circumference having a predetermined radius around the shaft, and the arm angle restricting plate can move forward and backward. provided pins to the arm and leg strength wrought machine is characterized in that so as to load the weight of the weight on the cam plate.