Abdominal muscle training machine

Abstract

To provide an abdominal muscle training machine which allows training of abdominal muscles to be performed simply and can stably apply laterally equal loads to the abdominal muscles.SOLUTION: A support base 2 and a presser 3 connected to the top ends of right and left guide rods 5 provided upright side by side on the support base 2 are arranged facing vertically, with coil springs 4 interposed between the support base 2 and the presser 3. An abdominal muscle training machine 1 allows a user to perform abdominal muscle training by pressing the presser 3 toward the support base 2 by an action of making the chest and the thighs approach each other. In such a constitution, only a space to be seated is required to simply perform the abdominal muscle training, and the presser 3 can be moved vertically in parallel with the support base 2 by the right and left guide rods 5, which suppresses occurrence of right and left bias of the loads to the abdominal muscles.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an abdominal muscle exercise device for training abdominal muscles.

Background Art

[0002] A number of devices for training abdominal muscles have been proposed conventionally. For example, in Patent Document 1, there are provided a slide post having left and right grips at its upper end, a leg positioning member through which the slide post is inserted so as to be movable in the vertical direction, and a compression spring for biasing the slide post upward with respect to the leg positioning member. With the leg positioning member being clamped by the user's thighs, the user can train the abdominal muscles by pushing down the grips. Further, by replacing the grips between the upper end and the lower end of the slide post, not only the abdominal muscles but also the arm strength and chest muscle strength can be trained.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the conventional configuration of Patent Document 1 described above, since the grips protrude left and right from the support portion provided at the upper end of the slide post, the forces applied to the left and right grips act on the compression spring via the slide post. Therefore, it is desirable to apply forces to the left and right grips as evenly as possible. However, since human muscle strength often differs between the left and right, it is likely that the force is applied unevenly to one side. In particular, in the conventional configuration of gripping the grips, a deviation between the left and right is likely to occur due to the influence of arm strength. When such an uneven force acts repeatedly, a deviation occurs in the vertical operating direction, and there is a problem that the load on the abdominal muscles is uneven between the left and right due to the deviation.

[0005] The present invention proposes an abdominal muscle exercise device capable of stably applying a load evenly to the left and right abdominal muscles.

Means for Solving the Problem

[0006] The present invention includes a support base body, left and right guide rods that are erected side by side on the support base body and are stretchable in the vertical direction, a pressing body that is connected to the upper ends of the guide rods and is disposed opposite to the support base body above the support base body, and one or a plurality of coil springs interposed between the support base body and the pressing body and elastically contracting by relatively approaching the support base body and the pressing body. In a state where the support base body is fixed at a predetermined position, when the user approaches the chest and the thigh, the user presses the pressing body toward the support base body with the arm, thereby performing abdominal muscle training. It is an abdominal muscle exercise device characterized by this.

[0007] In such a configuration, since the movement of relatively approaching and separating the support base body and the pressing body is performed along the stretching direction of the left and right guide rods, the direction of the movement is limited to the stretching direction. Thereby, even if a biased force acts on the pressing body, the force can be supported by the left and right guide rods, so that the pressing body and the support base body can move stably along the stretching direction of the guide rods. Therefore, according to the configuration of the present embodiment, the occurrence of deviation in the operating direction can be suppressed compared with the above-described conventional configuration, so that the load on the abdominal muscles can be suppressed from being biased left and right, and appropriate abdominal muscle training can be stably performed over a long period.

[0008] Also, according to the configuration of the present invention, when the user is seated, the abdominal muscle training can be performed by placing the support base body on the thigh and pressing the pressing body with the arm. Thus, according to the configuration of the present invention, for example, abdominal muscle training can be performed in a space where sitting is possible. And since it is easy to carry, it can be trained easily.

[0009] In the abdominal muscle exercise device of the present invention described above, a pair of pressing portions against which both arms of a user are respectively pressed are provided on the upper surface portion of the pressing body, and coil springs are respectively provided directly below each pressing portion. A configuration is proposed.

[0010] In such a configuration, when the user presses the arm against the pressing portion to apply a force, the force can be applied along the elastic expansion and contraction direction of the coil spring, so that the occurrence of displacement as in the conventional configuration can be further suppressed. Furthermore, the biasing force of the coil spring can be directly used as a load on the abdominal muscles, and training can be performed by efficiently utilizing the biasing force of the coil spring.

Effects of the Invention

[0011] According to the abdominal muscle exercise device of the present invention, displacement in the operating direction between the pressing body and the support base body can be suppressed, so that appropriate abdominal muscle training can be stably performed. In addition, abdominal muscle training can be easily performed anywhere.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

Figure 4

Modes for Carrying Out the Invention

[0013] Examples according to the present invention will be described with reference to the accompanying drawings. The abdominal muscle exercise device 1 of the embodiment is for training the abdominal muscles. As shown in FIGS. 1 and 2, it includes a support base body 2 that is substantially rectangular in plan view, four guide rods 5 erected at the corners of the support base body 2 respectively, a substantially rectangular pressing body 3 connected to the upper ends of each guide rod 5, and two coil springs 4 interposed between the support base body 2 and the pressing body 3.

[0014] The support base body 2 is composed of a rectangular flat base portion 11 and a rectangular frame-shaped lower mounting frame portion 12 fixed on the base portion 11. The lower mounting frame portion 12 is for mounting the guide rod 5 on the base portion 11 and is fixed to the base portion 11. And the lower ends of each guide rod 5 are fixed to the four corners of the lower mounting frame portion 12, and each guide rod 5 is erected respectively. In this way, the four guide rods 5 are arranged in parallel at the four corners of the support base body 2.

[0015] The guide rod 5 includes a cylindrical guide tube portion 15 opened upward and a guided rod portion 16 slidably inserted into the guide tube portion 15 in the vertical direction. The lower end of the guide tube portion 15 is fixed to the lower mounting frame portion 12. And the upper part of the guided rod portion 16 protrudes upward from the guide tube portion 15, and the upper end of the guided rod portion 16 is fixed to the upper mounting frame portion 22 of the pressing body 3. In addition, the guide rod 5 is provided with a retaining means (not shown) so that the guided rod portion 16 does not come out of the guide tube portion 15 upward.

[0016] The pressing body 3 is composed of a rectangular flat main board portion 21 and a rectangular frame-shaped upper mounting frame portion 22 fixed to the lower surface of the main board portion 21. The upper mounting frame portion 22 is for mounting the upper end of the guide rod 5 on the main board portion 21 and is fixed to the main board portion 21. And the upper ends of the guided rod portions 16 of the guide rod 5 are fixed to the four corners of the upper mounting frame portion 22. In this embodiment, the main board portion 21 of the pressing body 3 and the base portion 11 of the support base body 2 are the same rectangular shape in plan view, and the two are arranged in parallel.

[0017] On the upper surface of the main board portion 21 of the pressing body 3, two circularly recessed pressing portions 24 are formed side by side in the left - right direction. These pressing portions 24, 24 are provided at positions symmetrical with respect to the center of the main board portion 21 in the left - right direction.

[0018] The two coil springs 4, 4 are respectively disposed directly below the pressing portions 24, 24 of the pressing body 3 described above and are provided side by side in the left - right direction. Each coil spring 4 has its expansion - contraction direction as the up - down direction, with its lower end connected to the upper surface of the pedestal portion 11 of the support base body 2 inside the mounting lower frame portion 12 and its upper end connected to the lower surface of the main board portion 21 of the pressing body 3 inside the mounting upper frame portion 22. By these coil springs 4, the support base body 2 and the pressing body 3 are arranged to face each other at a predetermined interval in the up - down direction.

[0019] In such an abdominal muscle exercise device 1, two guide rods 5 are provided on each of the left and right sides. Between the left and right guide rods 5, two coil springs 4 are arranged side by side. Here, as described above, the guide rod 5 is configured such that the guided rod portion 16 fixed to the pressing body 3 is slidably provided along the longitudinal direction (up - down direction) of the guide cylinder portion 15 fixed to the support base body 2. Therefore, it expands and contracts in the up - down direction by the up - down movement of the guided rod portion 16. And since the four guide rods 5 are arranged side by side at the four corners of the support base body 2 and the pressing body 3 respectively, the support base body 2 and the pressing body 3 move in the up - down direction while maintaining a parallel state with each other. With this configuration, by pressing the pressing body 3 downward to compress the coil springs 4, the pressing body 3 can be moved downward while maintaining the parallel state between the pressing body 3 and the support base body 2. And when the force pressing the pressing body 3 downward is released, by the biasing force of the coil springs 4, the pressing body 3 moves upward and returns to its normal state (original position) while maintaining the parallel state between the pressing body 3 and the support base body 2.

[0020] In the abdominal muscle exercise apparatus 1 of this embodiment, for example, a user sitting on a chair can perform abdominal muscle training by pressing the left and right elbows against the pressing portions 24 of the pressing body 3 in a state where the support base body 2 is placed on the thighs and pressing downward. When the pressing body 3 is pressed downward against the biasing force of the coil spring 4 in this way, the pressing body 3 moves downward while maintaining a parallel state with the support base body 2 by the guide rod 5. Thereby, even when the force pressing the pressing body 3 is biased left and right, the pressing body 3 can be moved downward in parallel, and it is possible to suppress the occurrence of left-right bias in the load on the abdominal muscles. Further, in the configuration of this embodiment, since the pressing portion 24 for placing the user's arm (elbow) is provided on the pressing portion 24, it is possible to suppress the displacement of the user's arm when pressing the pressing portion 24 downward, and it is easy to apply equal force left and right. Therefore, the effect of this embodiment of suppressing the occurrence of left-right bias in the load on the abdominal muscles as described above can be further improved.

[0021] Also, in the configuration of this embodiment, since the coil spring 4 is disposed directly below the pressing portion 24, when pressing the pressing portion 24, the biasing force of the coil spring 4 can be directly applied to the user, and the abdominal muscles can be efficiently exercised.

[0022] The configuration of this embodiment can also perform abdominal muscle training in the same manner by placing the support base body 2 on the seat surface of the chair on which the user is sitting. Or, even when the support base body 2 is placed on the thighs or the floor in a state of sitting on the floor, abdominal muscle training can be performed in the same manner. Thus, the abdominal muscle exercise apparatus 1 of this embodiment can perform abdominal muscle training anywhere as long as there is a seatable space, for example. Further, since it is easy to carry, the abdominal muscles can be easily exercised.

[0023] In addition, as shown in Fig. 4, the abdominal muscle exercise apparatus 1 of this embodiment can also be used by being housed inside a cover 41 having cushioning properties. By using it in this way while being housed inside the cover 41, it is possible to prevent the support base body 2 and the pressing body 3 from directly contacting the user's body, and it is possible to reduce the physical load caused by such contact. Furthermore, since the cover 41 covers the entire abdominal muscle exercise apparatus 1, it is also possible to prevent the body or clothes from being pinched by the coil spring 4 that expands and contracts during abdominal muscle exercise.

[0024] The present invention is not limited to the above-described embodiments, and can be appropriately changed within the scope not departing from the gist of the present invention. For example, the dimensional shapes of the respective members constituting the abdominal muscle exercise apparatus can be appropriately changed. Specifically, the support base body and the pressing body may be substantially elliptical, arc-shaped, or U-shaped, etc. In the above-described embodiment, a configuration in which two coil springs are provided is used, but it is not limited to this, and the number of coil springs can be appropriately changed such as one or three. In the above-described embodiment, a configuration in which four guide rods are respectively provided at the four corners of the support base body and the pressing body is used, but it is not limited to this, and a configuration in which two guide rods are respectively provided on the left and right side portions may also be used. In the above-described embodiment, a configuration in which a recessed pressing portion is provided on the upper surface portion of the pressing body is used, but it is not limited to this, and for example, a pressing portion constituted by a cushioning material attached to the upper surface of the pressing body may be provided. Or, the pressing portion may have a configuration in which a depression is provided on the upper surface of the pressing body and a cushioning material is attached to the depression.

Explanation of reference numerals

[0025] 1 Abdominal muscle exercise apparatus 2 Support base body 3 Pressing body 4 Coil spring 5 Guide rod 24 Pressing portion

Claims

1. A support base body, left and right guide rods that are erected side by side in the support base body and are vertically expandable and contractible, a pressing body that is connected to the upper ends of the guide rods and is disposed opposite to the support base body above the support base body, one or more coil springs interposed between the support base body and the pressing body, which elastically contract by relatively approaching the support base body and the pressing body are provided, The abdominal muscle exercise device is characterized in that, with the support base body fixed at a predetermined position, when the user approaches the chest and the thigh, the abdominal muscle training is performed by pushing the pressing body toward the support base body with the arm.

2. On the upper surface portion of the pressing body, a pair of pressing portions against which both arms of the user are respectively pressed are provided, The abdominal muscle exercise device according to claim 1, characterized in that the coil springs are respectively provided directly below the respective pressing portions.

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