JPS6232058Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a load-variable weight device which is a weight device for training equipment, and in which the gravitational action of the weight is varied and transmitted.

Conventionally, there are various training devices that use weights to train muscles and the body, but all of them have a structure that simply uses the weight of the weights, and the gravitational force of the weights is always at a constant strength. Since it affects the muscles, it is difficult to perform truly rational training. This is because the force acting on a joint in the human body differs depending on the joint angle. This is because the changes in the acting force when the joint angle changes are related to the muscle length, muscle strength, and mechanical force efficiency. For example, the flexor and extensor muscles of the shoulder joint reach their maximum isometric strength when the joint angle is between 90° and 110°, so the gravitational force of weights also works at its maximum when the muscle strength is at its highest; When it is in a state where it is in a low state, it is possible to train in a truly rational manner without straining or wasting it, only if the effect is small enough to avoid overloading.

Therefore, the purpose of this invention is to have the gravitational force of the weight change in direct proportion to changes in muscle strength and joint force, allowing for truly rational training without strain or waste. An object of the present invention is to provide an upper arm training device configured to

The ultimate purpose of this invention is to coaxially support and fix a pair of eccentric rope wheels so that they can rotate eccentrically with their centers shifted from each other, and to connect one end of the rope to each eccentric rope wheel. A support platform that can be raised and lowered by connecting the other end of the rope is provided, and a balance weight is suspended from the support platform, and a load-adjustable weight is connected to and suspended from the other end of the rope. Another object of the present invention is to provide a load-variable muscle strength training device, characterized in that the movable platform has a pair of left and right operating rods protruding from it.

In the structure of this invention, the term "rope" has a broad meaning that includes chains, cables, cords, etc. in addition to the original rope with high tensile strength, and therefore, the term "rope vehicle" refers to chain vehicles, cable guide vehicles, pulleys, etc. It has a broad meaning that includes.

Next, this invention will be explained with reference to illustrated embodiments.

FIGS. 1 and 2 show a training device (Super Impress Machine) to which the variable load weight device according to the invention is applied. In the figure, 1... is a weight, which is a substantially rectangular and relatively thin plate-like body as shown in Figure 3, and has a hanging rod 2 in the center.
It has a hole 1a through which it passes, and has U-shaped notches 1b, 1b in the center of both sides, through which guide rods 3, 3 pass. A large number of weights 1... are installed in a stacked manner in the height direction of the guide rods 3, 3, and are suspended by passing the stop pins 4 inserted from above into the desired number of positions into the recesses 2a of the hanging rods 2. It's summery.

The hanging rod 2 is suspended and supported by a hanging frame 5 that can be raised and lowered along guide rods 3, 3. A rope 7 is connected to a bolt 6 of the hanging frame 5. The left and right guide bars 3, 3 are connected to a bottom frame 8 and a connecting beam 10 installed between the tops of the left and right vertical frames 9, 9.
It is fixed vertically and parallelly between the two.
In the figure, 37 is a stacked weight 1...a buffer table installed at the bottom.

The rope 7 passes through a guide rope wheel 11 attached under the connecting beam 10, winds its other end around an intermediate rope wheel 12, and is connected to the intermediate rope wheel 12 with a pin 13, as shown in FIG. 4A. . As shown in FIGS. 4A and 4B, the intermediate rope pulley 12 is mounted on a common rotating shaft 15 together with the eccentric rope pulley 14, and the intermediate rope pulley 12 is fixed to the rotating shaft 15 with a key 16. The intermediate rope pulley 12 and the eccentric rope pulley 14 are eccentrically arranged by a distance e from their centers, and their eccentric directions are shifted by an angle of approximately 30 degrees from each other, and are connected by bolts 17 and rotate integrally. It is configured as follows. The rotating shaft 15 is
Bearings 19, 19 fixed on frames 18, 18
It is rotatably supported by.

A second rope 20 is wound around the eccentric rope sheave 14 in the same direction as the rope 7, and its end is connected to the pin 13 at a position forming an angle of approximately 330° with a pin 43. Therefore, the second rope 20
When pulled, the eccentric rope wheel 14 is rotated, the relay rope wheel 12 which rotates integrally with the eccentric rope wheel 14 is rotated, the rope 7 is pulled, and the weights 1... are lifted. In other words, the weight of the weights 1 acts as tension on the second rope 20. However, the effective radius of the intermediate rope sheave 12 and the eccentric rope sheave 14 is
The weight 1 changes as a function of the rotation angle as a variable, with a minimum at a rotation angle of 0° or 360° and a maximum at a rotation angle of 180°. The wheel 12 and the eccentric rope wheel 14 act in a manner that varies in magnitude inversely to the effective radius of the rope wheel 14.

Therefore, the second rope 20 is connected to the eccentric rope car 1
A movable platform 2 is disposed in a vertically upward direction through two guide rope cars 21, 21' from 4, and the other end is movable along vertical guide rails 22, 22.
It is connected to 3. The guide rail 22 is made of C-shaped steel, as shown in FIG.
Two lips are arranged vertically in parallel with each lip facing each other, the lower end of which is placed and fixed on the bottom frame 8, and the upper end is placed on the left and right vertical frames 9, 9.
It is fixed to a connecting beam 10' which is installed between the upper ends of the front parts and is rigidly connected. In the figure, 24 is a support base, 25 is a buffer base for the movable base 23 installed on the support base 24, 26 is a fixed frame fixed to the front part of the movable base 23, and 27 is projected approximately horizontally forward from the fixed frame 26. It is an operating rod.

Next, reference numeral 28 in the figure is a balance weight, which is installed along these vertical guide rails 29, 29 so as to be able to rise and fall freely. This balance weight 28
The rope 31 with one end stopped at point A is moved to the moving table 23.
After wrapping it around the guide sheep 32, connect the connecting beam 1.
It is wound around the guide sheeps 34 and 35 of the sheep mounting frame 33 fixed at 0', and the other end is connected to the upper end of the balance weight 28, so that the moving table 23 and the balance weight 28 are moved up and down in conjunction with each other. It is configured.

In the figure, 35 is a seat, which is installed approximately horizontally on a pedestal 36 so that the user can sleep on his/her back. The pedestal 36 is connected to the bottom frame 8. In the figure, 40 is a support having positioning holes 40a for the moving table 23, and 41 is a positioning pin.

As shown in FIG. 1, in the training device having the above configuration, the user lies on his/her back on the seat 35, grasps the operating rod 27 with both hands, and raises and lowers the movable platform 23 while bending and stretching the elbow joints as if doing push-ups. . In this case, the gravitational action of the weight 1 is proportional to the strength of the arm force, which varies depending on the joint angle of the elbow joint as the rope 7 and the second rope 20 reciprocate through the eccentric intermediate rope wheel 12 and the eccentric rope wheel 14. It changes and acts, and the balance weight 28
The support base, which has its own weight removed, works with the appropriate strength for the user. Therefore, it is possible to always apply an even load to the muscles that are flexed and stretched, and it is possible to perform truly rational arm strength training that is free from unreasonableness and waste.

[Brief explanation of the drawing]

Figures 1 and 2 are front and side views of training equipment to which the variable load weight device of this invention is applied, Figure 3 is a perspective view showing the structure of the weight part, and Figures 4 A and B are intermediate ropes. 5 is a cross-sectional view taken along line V-V in FIG. 2. 1... Weight, 3... Guide rod, 7... Rope, 2... Hanging bar, 4... Stopping pin, 12... Intermediate rope wheel, 14... Eccentric rope wheel, 20... Second rope.

Claims (1)

[Scope of utility model registration request] A pair of eccentric rope wheels are coaxially supported and fixed so that their centers can be rotated eccentrically with their centers shifted from each other, and one end of the rope is connected to each eccentric rope wheel, and the other end of the rope is connected to the other end of the rope. A support stand that can be raised and lowered while being guided by a guide member is provided,
A balance weight is suspended from the support platform, and a load-adjustable weight is connected to and suspended from the other end of the rope, and a pair of left and right operating rods are protruded from the movable platform. A variable load strength training device characterized by: