JPS5881054A - Athletic tool - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to gym equipment, and more particularly to gym equipment for stretching and strengthening the back muscles.

In this physical education equipment, the support rod and the tension rod are movable in opposite directions against the force of the spring,
The support rod is connected to a guide rod containing a spring, and a grip rod is movably connected to the guide rod.

Because of a lack of physical activity, many people's back muscles become stiff and stiff, and blood doesn't circulate properly, causing pain. This problem is probably due to the fact that the crooked back muscles load onto the dorsal plate (dor-sal a'5aa), which places pressure on the neural pathways.

Physical education equipment is known which has a bending support rod connected to a guide rod and a push rod movable on the guide rod against the force of a spring. This traditional physical education equipment is to strengthen the muscles of the thighs, abdomen and arms, such as the distance between the bending support rod and the pressing rod, and here the bending support in the supine position with the knees bent. A bar is supported in the knee area and the mb key, or push bar, is pressed by both hands against the bending support bar. With conventional gym equipment with such a configuration, it is difficult to stretch and strengthen the back muscles.

The present invention was made based on the above circumstances, and an object of the present invention is to provide a gym equipment with a simple structure that can stretch and strengthen the muscles of the back and legs.

An object of the present invention is to provide a support rod having a substantially linear shape and a ball joint attached to one end of the guide rod.
This can be achieved by the physical education equipment of the present invention which has a guide rod and has a unique configuration. With such a configuration,
The support rods are placed in multiple parts of the thighs, and the grip rods are held by both arms stretched upwards.When you bend your upper body forward while sitting with your legs stretched out, your back muscles are stretched. The pressure exerted on the dorsal djgcs is reduced, especially the pressure exerted on the 5th and 6th lumbar vertebrae regions. The reason for this is that the center of rotation of the upper body and the center of rotation of the gymnastics equipment are different, so the spring is compressed when the upper body is bent forward.

By connecting the guide rod to the support rod using a ball and a joint, it is possible to bend the upper body forward while the gym equipment is tilted to a slanted mountain pass, so it is easy to loosen the stiffness of the spine. be able to.

Preferably, the rod is fixed across the rod and the front end of the rod is supported by a spring. With this configuration, it is possible to treat tight and stiff conditions in the back muscles in a precise manner.

According to a further feature of this invention, the spring is supported on a slidable and fixable support which is connected to the support rod and is attached to the round tube.

In such an arrangement, the support is preferably secured by a threaded gel passing through a radially threaded hole in the support and across the wall of the tubular tube. It is preferably connected to a guide, preferably a rod slidable in a tube connected to a support rod, the front end of the rod being supported by a spring. With this kind of configuration,
Accurate methods can treat tight and stiff conditions in the back muscles.

According to a further feature of the invention, the spring is supported on a slidable and fixable support which is attached to a tube connected to the support rod.

With this supportive configuration, the distance between the support bar and the grip bar can be adjusted to accommodate the user's height without changing the tensile strength or properties of the spring. be able to.

In such a configuration, the support is preferably secured by a threaded gel passing through a radially threaded hole in the support and across the wall of the tube.

In a preferred embodiment of the invention, the support rod is provided with two rotatably mounted supports having a particularly streamlined cross-section.
If this configuration has two support bodies,
The support bar does not rub against the skin, and the cross section of the two support bodies ensures a good distribution of pressure.

In order to hold the two support bodies in a specific position relative to the guide rod, the husbands of the two support bodies are connected to the support rod by at least one, preferably two, springs that exert a tension in the circumferential direction. - If two springs are used here, the two springs will apply tension in opposite directions. Examples of the present invention will be described below with reference to the drawings. .

The physical education equipment according to the embodiment of the present invention shown in FIG. 1 has a structure in which a guide rod 1 is inserted.

A guide rod 2 is therefore inserted into a tube 3 which houses a compression spring 4. One end of the guide rod J is connected to the ball joint 1
9 is connected to a roller-shaped support rod 5, and the other end has a substantially crank-shaped ml rod 6. The pin with a spherical head 20 of the ball joint 19 is connected to the support rod 5, and the pin is connected to the support 2111C in the guide rod 1.
That's why I'm standing up. The chestnut is firmly connected to the digging rod 6B and the guide rod L so that it can rotate freely! Since it is attached by a shaped retaining piece 7, the gripping shaft 6 is attached to the shaft 8, which rotates around the shaft 8, which extends perpendicularly to the axis of the guide rod 1 and the axis of the digging rod 6. It is possible, therefore, that the shaft 8 can be, for example, threaded but also bolt-shaped.
The holding piece can be fixed by screwing a nut (not shown) into this gel.

The grip 14I6 is also rotatably held in the holding piece 7. In this case ζ, the holding is carried out by a screw 9 inserted into a threaded hole in the holding piece 2.

As shown in FIG. 2, when the physical education equipment according to the embodiment of the present invention shown in FIG. Grasp the grip stick 6 in the stretched state.

The upper body and the guide rod 1 are spaced apart by a certain distance from the upper body and the guide rod 1, and can pivot around a center of rotation. However, if the upper body is bent forward together with the guide rod 1, the length of the main guide rod J when the spring 4 is compressed will be shortened. As a result, the back muscles and vertebrae are pulled strongly through both arms, causing the back plate (dorsal di
scs) is reduced and the back muscles are relaxed.

Adjustments can be made in accordance with the height of the user by rotating the rod 6 with one hand, so that the distance between both handlers and the support rod 5 can be changed. The support 10 of the compression spring 4 moves. For this purpose, the support 1 is inserted into a hole 1112 which is slidable on the outer surface of the tube 3 and which is inserted into a slot 13 in the tube 12.
The threaded gel 11 screwed into the threaded hole 14 in 0 can be loosened. The support 10 can therefore be moved and fixed by tightening the I-seat 11.

In order to prevent the rod 2 from separating from the remaining components of the gym equipment, a plurality of protrusions 16 with a plurality of grooves 15 are provided at the front end of the support IO and the tube 3. The end of the spring 4 is engaged with the end of the spring 4.

FIG. 1 shows a plurality of support bodies 17 rotatably arranged on the support rod 5. As shown in FIG. The cross-sectional shape of this support body 17 is preferably a streamlined shape as shown by the dotted line. Further, the plurality of support bodies 17 can be held at specific positions with respect to the guide rod 1 by springs 18 that generate tension in the circumferential direction of the support rod 5. two springs 18
are subjected to tension in advance in opposite directions.

Basically, the guide rod 1 can be firmly connected to the support rod 5, so that the guide rod 1 can rise substantially vertically from the support rod 5.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway front view showing a physical education equipment according to an embodiment of the present invention; FIG. 2 is a diagram showing the state in which the physical education equipment of FIG. 1 is used. DESCRIPTION OF SYMBOLS 1...Guide rod, 2...Rod, 3...Pipe, 4...Compression spring, 5...Support body, 6...Idle rod, 6'...
-.Handle, 1..Holding piece, 8..Shaft, 9..Screw, Jll)..Supporting body, 11..Rut, 12..
product, 13... elongated groove, 14... hole, 15... groove,
16...Protrusion, 11...Support body, 18...Spring, 1i...Ball joint, 20...Head, 21...Support body. Applicant's agent: Patent attorney, Takehiko Suzue0 Fυ2

Claims (6)

[Claims] (1) It is equipped with a support rod and a tension rod that can move in opposite directions against the force of the spring. 1 Here, the support rod accommodates the spring and the grip rod moves. In those which are freely connected and connected to four guide rods, the support rod (
5) has a substantially linear shape, and the guide rod 0 is connected by a ball joint.
) A physical education equipment characterized by being attached to one end of the equipment and having a guide rod (J) inserted therein. (2)'[) The rod (6) is slidably inserted into the tube O) connected to the support body) and together with the guide rod (O).
The rod C1) constituting the rod J) is rotatably attached to the rod C1) by a guide member, and the front end of the rod C1) is supported by a spring (4) housed in the tube (3). The physical education equipment according to claim 1, characterized in that: (3) The spring (4) is connected to the tube (
3) The physical education equipment according to item 1 or 2, characterized in that it is supported by a support (10) movably attached to the equipment. (4) The support (J) is fixed by a radially threaded hole formed in the support (Nori) and a threaded delt (1) crossing the wall of the tube (3). Physical education equipment according to claim 3, characterized in that: (5) Support (on the chrysanthemum, there are two
The physical education equipment according to any one of claims 1 to 4, characterized in that two support bodies (J7) are rotatably provided. (6) If each of the two support bodies (17) is connected to the support body (5) by at least one spring (1B) that applies tension in the circumferential direction, and two springs (18) are used; 6. Physical education equipment according to claim 5, characterized in that the two springs (18) are pretensioned in mutually opposite directions.