JP2583691Y2 - Strength training equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device and a device for training muscle strength of a specific part of a body, for example, a device for training a muscle used for a fitness device or the like.

More specifically, in order to train muscles of the body and strengthen muscles, a plurality of plate-shaped weights are moved up and down as appropriate, and the weight is applied to the muscles. The present invention relates to a device for setting the number of sheets to a weight suitable for muscle training.

[0003]

2. Description of the Related Art As a prior art of this kind of conventional strength training equipment (weight training machine, etc.), Japanese Utility Model Laid-Open No. 2-1
There is one described in Japanese Patent No. 5173.

As shown in FIG. 8, the lower end of a weight suspending rod b for suspending a plurality of plate-shaped weights a is disposed on the frame side when the weight a falls. It is buffered in a passive state by a vessel c.

[0005]

However, in the above prior art, A.I. Spring for return in hydraulic shock absorber c (not shown)
If the weight is not strong, the weight does not return, and in the case of a light weight a, the weight suspending rod b is lifted, so that the weight selection pin e does not enter the weight selection hole d of the predetermined weight weight a, and adjustment is troublesome. There is a problem that there is.

B. If the weight suspending rod b does not drop straight (vertically), it will not hit the hydraulic shock absorber c. Also, the collision of the hydraulic shock absorber c with the cap f when the weight suspending rod b falls will occur. Since the area is small, there is a problem that it is difficult to reliably buffer.

C. Further, since the return spring is built in the hydraulic shock absorber, it cannot be replaced. Even if it can be replaced, if the return spring is weak, it cannot be returned to the full extension position without any load due to the sliding resistance of the piston rod or the like of the hydraulic shock absorber.

Therefore, there is a problem that the weight drop cannot be sufficiently buffered.

In view of the above, the present invention has been made in view of the above-mentioned problems of the prior art, and utilizes the own weight or inertia of the hydraulic shock absorber to ensure the shock absorption and to easily adjust the weight of the muscle. The purpose is to provide equipment for use.

[0010]

In order to achieve the above-mentioned object, in the muscle training apparatus according to the present invention, a plurality of plate-like weights are appropriately suspended and suspended, and the weight is set to a predetermined height. In a device that trains muscle strength by applying weight at that time to muscles of the body,
A hydraulic shock absorber is attached to a lower end in the axial direction of a weight suspension rod for suspending a plate-shaped weight.

[0011]

Since the hydraulic shock absorber is directly attached to the lower end in the axial direction of the weight suspension support rod, the return spring can be easily returned by the weight and inertia of the hydraulic shock absorber.

Even if the return spring is weakened, since the hydraulic shock absorber is attached to the weight suspending rod, the hydraulic shock absorber is lifted by the rise of the weight suspending rod, and the hydraulic shock absorber is extended by the inertial force. Therefore, the piston rod extends to its maximum extension without being affected by the sliding resistance of the piston rod, and as a result, it is possible to sufficiently buffer the weight drop.

Also, by making the return spring weak, it is not necessary to lift the weight suspending rod when attaching the weight selection pin, and the weight selection pin can be easily and reliably inserted.

That is, since the load of the return spring of the hydraulic shock absorber can be reduced, there is no need to lift the weight when the weight is light, and the weight selection pin can be easily inserted without displacement.

Further, by making the collision surface of the hydraulic shock absorber a frame having a large collision area, reliable cushioning becomes possible.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment will be described with reference to FIGS. 1 to 7. FIG. 7 is an overall schematic side view of a muscular strength training device. In order to add weight, the weight of the plate-shaped body is appropriately stacked and moved up and down to load the weight on muscles, and the number of weights is set to a number of weights suitable for own muscle training. And a movement mechanism section D configured variously to train muscles at a predetermined part of the body. The movement mechanism section D having the illustrated configuration represents an example of equipment of various mechanisms.

In the weight portion C, a frame F is assembled on the frame 3, and a stopper 5 for receiving the weight 2 is erected on the frame 3 at the position of the frame F, and the stopper 5 is provided substantially vertically. Two guide rods 4 are provided upright.

The weight 2 is a metal plate having a predetermined weight. The weight 2 is adjusted to be the most suitable for one's own muscle training, and a plurality of weights are set to the set weight to set the weight. The guide rod 4 is provided at both ends of the weight 2.
A hole 24 through which the weight suspending rod 1 is inserted is formed substantially in the center, and a cutout 25 into which the weight selection pin 22 can be inserted is provided substantially at the position of the hole 24 on the side surface. Have been.

After selecting the weight, the weight suspending rod 1 is provided with a plurality of weight selecting holes 23 for inserting the weight selecting pins 22 and fixing the predetermined weight 2 in the axial direction. The support rod 1 is connected by pins 11 to a weight connector G connected to the movement mechanism D by a wire E or the like, and a plurality of plate-shaped body weights 2 having a predetermined weight are provided.
In the state where is suspended by the weight suspending rod 1, the exercise mechanism D drives the weight suspending rod 1 up and down to train muscle strength.

As shown in FIG. 1, a hydraulic shock absorber 6 is directly attached to the lower end of the weight suspending rod 1 in the axial direction via a piston rod 61, and the frame is used when the weight suspending rod 1 drops. The hydraulic shock absorber 3 collides with the hydraulic shock absorber 3 to buffer.

As shown in FIGS. 4 to 6, the structure of the hydraulic shock absorber 6 includes an accumulator 66, a cylinder 65, and a piston 64 provided in an outer tube 65a. Is provided, and an oil seal 69, O
A bearing 63 on which a ring B is disposed is provided, and a piston rod 61 is slidably formed.

A spring receiver 62 is attached to an end of the piston rod 61, and a return spring 7 is disposed between the spring receiver 62 and the outer tube 65a.

A bottom member 68 is provided on the other side in the outer tube 65a, and the bottom member 68
A check valve A having an O-ring 82 is arranged, and a bolt 8 having a ring 81 is provided at an end of the bottom member 68.
The stopper 8 is connected to the stopper 2 via the second stopper 2.

FIG. 5 shows the internal structure of the distal end of the piston rod 61, and FIG. 6 shows a cross section of the main part of the hydraulic shock absorber 6.

Here, an orifice 65b is formed in the cylinder 65, and the cylinder 65 and the outer tube 65a communicate with each other through the orifice 65b.

FIG. 2 shows another embodiment of the mounting example of the hydraulic shock absorber 6, which is the opposite of the mounting example of the embodiment of FIG. 1, that is, the outer tube 65a is connected to the weight suspending rod 1.
The return spring 7 is disposed directly below the lower end, and the return spring 7 is disposed below.

[0027]

Since the present invention is configured as described above, the following effects can be obtained.

A. Since the hydraulic shock absorber is directly attached to the lower end of the weight suspension rod in the axial direction, the return spring can be easily returned by the own weight and inertia of the hydraulic shock absorber, and therefore the return spring force of the hydraulic shock absorber is weakened. It is possible to

Therefore, even if the return spring is weakened, the hydraulic shock absorber is attached to the weight suspending support rod, so that the hydraulic shock absorber is lifted by the rise of the weight suspending support rod, and the hydraulic shock absorber is extended by the inertial force. As a result, the piston rod extends to the maximum extension without being affected by the sliding resistance of the piston rod, and as a result, the falling of the weight can be sufficiently buffered.

B. By weakening the return spring, it is not necessary to lift the weight suspending rod when attaching the weight selection pin, and as a result, the weight selection hole does not shift when the weight selection pin is inserted, and the weight selection pin is Easy and reliable insertion.

That is, since the load of the return spring of the hydraulic shock absorber can be reduced, there is no need to lift the weight when the weight is light, and the weight selection pin can be easily inserted without displacement.

C. By making the collision surface of the hydraulic shock absorber a frame having a large collision area, reliable cushioning can be achieved.

D. If the lower end of the weight suspending rod of the existing equipment is slightly machined, it can be easily attached to the existing equipment.

E. When replacing the return spring of the hydraulic shock absorber with a weak one, it cannot be replaced because the return spring is built in conventionally, but in the case of the present invention, it is necessary to replace the spring because the return spring is mounted in the exposed state. Easy.

[Brief description of the drawings]

FIG. 1 is a front view of a main part of a weight part of the present invention.

FIG. 2 is a front view of a main part of another embodiment of the weight part of the present invention.

FIG. 3 is a front view of a main part of the weight part of the present invention.

FIG. 4 is a sectional view of the hydraulic shock absorber according to the present invention.

FIG. 5 is an enlarged sectional view of a distal end portion of a piston rod.

FIG. 6 is an enlarged sectional view of a main part of the hydraulic shock absorber.

FIG. 7 is an overall schematic side view of a muscle training apparatus.

FIG. 8 is a perspective view of a main part of a conventional device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Weight suspension rod 2 Weight 3 Frame 4 Guide rod 5 Stopper 6 Hydraulic shock absorber 7 Return spring 21 Weight selection hole 22 Weight selection pin 23 Notch 61 Piston rod 62 Spring receiver 63 Bearing 64 Piston 65 Cylinder 65a Outer tube 66 Accumulator 68 Bottom member C Weight part D Motion mechanism part

Claims (1)

(57) [Scope of request for utility model registration] 1. An apparatus for training muscles by lifting a plurality of weights of a plate-like body and suspending the weights, lifting the weights to a predetermined height and dropping the weights, and applying weight at that time to muscles of the body. 3. The muscle training apparatus according to claim 1, wherein a hydraulic shock absorber is attached to an axial lower end of a weight suspending rod for suspending the weight of the plate-like body.