JP2009018099A - Training machine for training abdominal muscle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a training machine for training the abdominal muscles dispensing with a complicated mechanism such as a weight type loading device and inexpensively constituted into a compact shape in the training machine for twistingly rotating the upper half body and the lower half body with a user seated on a chair and training the abdominal muscles. <P>SOLUTION: This training machine for training the abdominal muscles consists of a support body, a seat part and armrest parts disposed on the support body, a pivot fixing the seat part or one of the armrest parts to the support body and rotatably pivoting the other, and a loading device for applying a rotating load to the pivot, wherein the loading device consists of a pinion having an output shaft to be connected with the pivot, a reciprocating rack engaged with the pinion, a pair of pistons provided integrally with the both ends of the rack, a cylinder for storing the respective pistons, a connecting means for connecting between ports of the respective cylinders, and a pressure control means for controlling the flow of pressure medium to be supplied to the respective cylinders via the ports. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a training machine for abdominal muscle training that can train the abdominal muscles of the trunk, particularly the abdominal oblique muscles, by rotating the upper or lower body while sitting on a chair.

  In recent years, in various sports gyms and the like, various training machines that can train muscles corresponding to respective parts of muscles of the whole body are used. In particular, as a training machine for training the abdominal muscles of the trunk, a training machine is known that trains the abdominal oblique muscles by twisting the upper body and lower body while sitting on a seat. As this type of training machine, there has been proposed a training machine having a structure in which an armrest attached to a rotating plate and a rotating chair are connected to each other so as to rotate in reverse relative to each other via an interlocking mechanism, and a load device is connected to the interlocking mechanism. (Patent Document 1). As a method of applying a load to the training machine, a method using a weight type load device (Patent Document 2) is known.

JP-A-1-31392 JP 2006-247168 A

The above-mentioned weight type load device requires a large weight and a complicated transmission mechanism for transmitting the load, so that not only the structure including the housing is complicated, but also the entire device becomes large, and the cost is greatly increased. was there. In training facilities, the order of training is generally determined, and equipment is arranged in an orderly manner to enable smooth training. However, because the training machine as described above is large, it is not easy to change the layout once it is installed in the facility, and it is difficult to arrange it neatly when introducing new equipment. There was a problem that it was difficult to smoothly perform a series of trainings using the.
The present invention has been made to solve the above-described problems, and provides a training machine for abdominal muscle training that can be easily installed and moved without causing the entire apparatus to become large, and that can be operated smoothly. It is the purpose.

  That is, the present invention provides a support, a seat and an armrest disposed on the support, and either the seat or the armrest is fixed to the support, and the other is rotatably supported. And a load device that applies a rotational load to the pivot. The load device includes a pinion having an output shaft connected to the pivot, a reciprocating rack that meshes with the pinion, A pair of pistons provided integrally at both ends of the rack, a cylinder that accommodates each piston, connection means that connects between ports of each cylinder, and a flow of pressure medium supplied to each cylinder through the ports The gist of the training machine for abdominal muscle training is characterized by comprising pressure control means for controlling.

  According to the present invention, the entire apparatus is not increased in size and can be made into a compact form, so that it can be easily installed and moved in a training facility, and the apparatus can be operated smoothly and the entire apparatus is inexpensive. An abdominal muscle training machine that can be configured to be provided.

Hereinafter, one embodiment of a training machine for abdominal muscle training of the present invention will be described with reference to the drawings.
1 and 2 show an embodiment of a training machine for abdominal muscle training of the present invention. In the figure, reference numeral 1 denotes a support made of an angle such as iron. A seat portion 2 on which a user sits is fixed to the support body 1 and is integrated with a pivot 10 so as to rotate relative to the seat portion 2, and an armrest portion bent and formed in a substantially U-shape. 3 is provided. The armrest portion 3 has a pair of left and right elbow rests 5 and 5 on which a user's arm is placed, and grip portions 6 and 6 standing at both free ends of the armrest portions 5 and 5 are used as a base portion. A backrest portion 4 having a cushioning property for abutting the back of the person is provided.
The base portion 7 of the seat portion 2 has a protruding portion 8 protruding forward, and a cylindrical front pad 9 is provided on the protruding portion 8. When the user sits on the seat 2 and pivots the armrest 3 to the left and right with the front pad 9 sandwiched between the crotch of both legs, the front pad 9 prevents the lower body from rotating, and the upper body is effectively rotated. Dynamic movement is allowed. By adopting the front pad 9 that is filled with a cushion material or the like inside the skin formed in a cylindrical shape with a skin or the like, it is possible to relieve the user's crotch feeling during training.
In the figure, 13 is a bearing that supports the pivot 10 of the armrest portion 3, 14 is a stopper made of, for example, urethane rubber, and 16 is a footrest. The pivoting of the armrest 3 is normally set at a swing angle of about 96 °, and the stopper 14 is provided at the end position of the pivoting operation of the armrest 3, and the armrest 3 is brought into contact and stopped rotating. It absorbs the impact.

  In the training machine for abdominal muscle training of the present invention, a load device 11 is attached to the shaft end portion 12 of the rotary shaft 10 that pivotally supports the armrest portion 3, and the load device 11 is connected to the base portion 7 of the seat portion 2. It is configured so that a load can be applied to the user when the armrest 3 is fixed.

  The additional device 11 used in the present invention is a cylinder device adopting a part of a known rotary actuator structure as shown in FIG. The load device 11 includes a pinion 21 having an output shaft 21 </ b> A that is rotatably supported by the housing 20, and a rack 22 that is integral with a connecting rod 23 meshes with the pinion 21. The output shaft 21A is connected to the shaft end 12 of the pivot shaft 10 via a coupling (not shown). A pair of pistons 24a and 24b are integrally provided at both left and right ends of the connecting rod 23, and each piston 24a and 24b is slidably accommodated in a pair of cylinders 25a and 25b disposed on the left and right, respectively. , And can be reciprocated in the directions of arrows C and D. When the output shaft 21A is forcibly rotated clockwise (arrow E direction), the connecting rod 23 moves in the direction of arrow C. When the output shaft 21A is rotated counterclockwise (arrow F direction), the connecting rod 23 is moved. Moves in the direction of arrow D, and this movement acts as a load resistance to the user. The load device 11 is fixed under the base portion 7 of the support 1 via the mounting portion 20a, whereby the additional device 11 can be compactly mounted and installed on the entire device, and an increase in size of the device can be avoided.

  One end side of each of the pair of cylinders 25a and 25b is closely fitted to the housing 20, while the other end side is sealed by end face sealing blocks 26a and 26b. The pistons 24a and 24b and the end face sealing block 26a are sealed. , 26b, pressure chambers 27a, 27b are respectively defined and a piston assembly is configured. The piston assembly is firmly fixed in the axial direction of the piston by a plurality of bolts 31, 31 to firmly constitute the load device 11. Each end face sealing block 26 a, 26 b is provided with supply / discharge ports 28 a, 28 b for supplying and discharging the pressure medium to and from each pressure chamber 27 a, 27 b, and each supply / discharge port 28 a, 28 b is connected via a pressure medium hose 29. Are connected, and a closed loop circulation system for moving the pressure medium 32 between the pressure chamber 27a and the pressure chamber 27b is formed. The pressure adjustment is performed by controlling the flow rate of the pressure medium on each of the supply / discharge ports 28a and 28b. Flow control valves 30a and 30b are provided as control means to perform. The flow control valve 30a on the supply / discharge port 28a side adjusts the pressure applied to the piston by controlling the flow rate of the pressure medium 32 when the pinion 21 rotates counterclockwise (arrow F direction). It controls the resistance when the pressure medium 32 moves in the arrow G direction from the state shown in FIG. The flow control valve 30b on the supply / exhaust port 28b side controls the flow rate of the pressure medium 32 when the pinion 21 rotates in the clockwise direction (arrow E direction) to adjust the pressure applied to the piston. It controls the resistance when the pressure medium 32 moves in the arrow H direction from the state shown in FIG. By configuring so that the pressure by the flow control valves 30a and 30b can be adjusted linearly with a pressure range of, for example, 5 to 105N, an appropriate rotational load can be given to the user, and the physical strength of the user can be adjusted. Setting is possible. In the illustrated example, a pair of flow control valves is shown. However, the number of flow control valves is not limited as long as the reciprocating pressure can be adjusted, and an appropriate number can be provided. The flow control valves 30a and 30b are preferably adjusted in a well-balanced manner so that the same pressure is applied when the pinion 21 rotates in the direction of arrow E and when it rotates in the F direction.

Next, an operation in which the user trains the abdominal muscles (abdominal oblique muscles) using the training machine for abdominal muscle training of the present invention will be described with reference to FIGS.
The user sits on the seat portion 2 of the training machine of the present invention, sandwiches the front pad 9 with his crotch, places both arms on the armrest portions 5 and 5 of the armrest portion 3, and firmly holds the grip portions 6 and 6 with both hands. Hold. At this time, the back is put on the backrest 4 with a good posture so that the user can easily turn the upper body by rotating the armrest 3. Next, for example, as shown in FIG. 5A, the user first rotates the armrest 3 in the clockwise direction (arrow A direction) so as to twist the upper body in the right direction, and the pinion 21 rotates in the arrow E direction. For example, the load device 11 has the pressure medium 32 in the direction of the one pressure chamber 27a so that the initial state shown in FIG. 3 (or the state shown in FIG. 4A) is changed to the state shown in FIG. 4B. The pressure medium moves and acts as a load on the user. When the pressure medium moves from the flow control valve 30b side to the flow control valve 30a side, one flow control valve 30b contributes to pressure adjustment, and the other flow control valve 30a is in an open state. Next, as shown in FIG. 5B, when the user turns the armrest 3 in the counterclockwise direction (arrow B direction) by twisting the upper body in the opposite direction, the pinion 21 rotates in the arrow F direction. Then, the load device 11 moves from the state of FIG. 4B to the state shown in FIG. 4A, and the pressure medium 32 moves in the direction of the pressure chamber 27b, and the movement of the pressure medium acts as a load on the user. To do. At this time, the flow control valve 30a contributes to pressure adjustment, and the flow control valve 30b is in an open state. Since the load device 11 generates load torque that hinders the rotational movement of the armrest portion 3 due to the rotation of the armrest portion 3, the user rotates the armrest portion 3 against the load. However, the left and right abdominal oblique muscles of the trunk can be trained in a well-balanced manner by repeating the operation of rotating the armrests 3 alternately left and right a predetermined number of times.

  Although the said Example showed the case where the seat part 2 was fixed to the support body 1 and the armrest part 3 was comprised rotatably with respect to the seat part 2, the training machine for abdominal muscle training of this invention is the armrest part 3. Is fixed to the support 1, the seat 2 is configured to be rotatable with respect to the armrest 3, a negative device 11 is provided on the rotating shaft of the seat 2, and the seat 2 is rotated by rotating the seat 2. Alternatively, a load from the load device 11 may be applied. In any case, since the load means is provided on the pivot, the instrument can be made compact, and the usability is extremely good.

It is a front view of an example of the training machine for abs training of the present invention. It is a side view of the training machine for abs training of the present invention. It is a section schematic diagram of a load apparatus used for a training machine for abdominal muscle training of the present invention. It is a cross-sectional schematic diagram which shows the operation state of the load apparatus used for the training machine for abdominal muscle training of this invention. It is a top view which shows the use condition of the training machine for abdominal muscle training of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Support body 2 Seat part 3 Armrest part 10 Pivot 11 Load apparatus 21A Output shaft 21 Pinion 22 Rack 24a, 24b Piston 25a, 25b Cylinder 28a, 28b Supply / exhaust port 29 Pressure medium hose 30a, 30b Flow control valve 32 Pressure medium

Claims (1)

A support, a seat and an armrest disposed on the support, a pivot on which one of the seat or the armrest is fixed to the support, and the other pivotally supports the other; and A load device that applies a rotational load to the pivot, and the load device is integrated with a pinion having an output shaft connected to the pivot, a reciprocating rack that meshes with the pinion, and both ends of the rack. A pair of pistons provided in the cylinder, a cylinder accommodating each piston, a connecting means for connecting between the ports of each cylinder, and a pressure control means for controlling the flow of the pressure medium supplied to each cylinder via the port This is a training machine for abdominal muscle training.

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