CN1208357A - Pedal recoil exercise machine - Google Patents

Abstract

The foot-operated rebound fitness device of the present invention has a seat, a saddle, and a load-generating device that applies load to the lower limbs when the user's lower limbs are in action. The load-generating device includes a pair of foot pedals and a cylinder that applies load to the backward movement of the foot pedals and automatically returns each pedal device forward when the pedaling force is released. The user sits on the saddle, holds the pad handles, and rests his abdomen and elbows on the pads, and alternately performs the pedaling motion of the left and right lower limbs to make the foot pedals move backward. The cylinder applies load to the pedaling motion of the lower limbs, which can effectively exercise the isoangular muscle strength of the back muscle group and the abdominal muscle group.

Description

Pedal recoil exercise machine

technical field

The present invention relates to the body-building apparatus based on the new muscular movement principle that is used to strengthen the isometric muscle strength of back machine group and abdominal muscle group, especially relate to the air bicycle type body-building apparatus (aero-bike) that mainly rotates the lower limbs in the past. ) (so-called bicycle-type exercise equipment) is a pedal recoil exercise for the lower limbs, that is, a recoil-type exercise device based on a straight line or circular arc to the rear.

Background technique

In recent years, various fitness equipment for the purpose of strengthening cardiopulmonary function and strengthening muscle strength are being popularized, but these equipment basically take healthy normal people as objects. The fitness equipment installed in the gymnasium of the health club is only the most suitable equipment for current athletes to train stronger muscles.

However, it can be said that many of the aspiring people in society are semi-healthy. For example, people with a history of orthopedic surgery such as low back pain or knee pain; people with medical history such as high blood pressure and diabetes; and people who pay attention to obesity or cholesterol levels are examples of such semi-healthy people. In this sense, it is imperative to develop fitness equipment suitable for semi-healthy people.

For the development of fitness equipment for semi-healthy people, the viewpoint of strengthening isometric muscle strength (=muscle strength supporting bones) is extremely important. For diseases represented by low back pain or knee pain, it is medically obvious that when the strength of the isometric muscles is reduced, it is easy to develop. In addition, everyone knows that the biggest cause of adult diseases is the decrease of basal metabolic rate, and the main reason is the decrease of isometric muscle strength.

Conventionally, there are many types of fitness equipment for training isotonic muscle strength (=muscle strength for exercise), but there are no equipment for training the above-mentioned isometric muscle strength.

Invention overview

Therefore, the main technical problem to be solved by the present invention is to provide a new type of fitness equipment for strengthening isometric muscle strength, especially strengthening the isometric muscle strength of the back muscles and abdominal muscles which are the biggest cause of low back pain.

One of the current problems is to provide a fitness machine that can exercise the above-mentioned isometric muscle strength without difficulty even for semi-healthy people or people with waist or knee diseases.

Another problem is to provide a fitness machine that is more efficient than conventional air bicycle type fitness machines and can calculate energy consumption with high precision in order to improve cardiorespiratory function and increase basal metabolism.

Still another object is to provide a fitness machine that can effectively enhance the isotonic muscle strength of the femoral and lower legs that are the main causes of knee pain in addition to the aforementioned isometric muscle strength.

Yet another subject is to provide a system that can improve the coordination of the lower limbs and the back muscles during exercise, especially the movement coordination between the hip muscles and other muscles, that is, the hip muscles and the back muscles, The fitness equipment for the coordination of various movements of the hip bone muscle group and the intestinal lumbar muscle group, as well as the hip bone muscle group and the thigh muscle group.

In order to solve the above-mentioned problems, according to the present invention, there is provided a kick recoil exercise machine having the following structure.

The pedal recoil fitness machine has a seat body composed of a frame or a pedestal, a saddle seat installed on the seat body for the user to sit on, and a load generating device that applies load to the two lower limbs when the user's two lower limbs act. It is characterized in that the load generating device includes a pair of pedal devices that carry the user's two feet and move in the same direction by using the alternate pedal movement of the user's two lower limbs to the rear, that is, a pedal rod and a pedal; The movement to the rear, that is, the movement of a substantially straight line or a circular arc to a substantially horizontal rear, a slanted rear, or a substantially slanted rear, and when the pedaling force on each pedal device is released, each pedal device quickly and automatically Loading devices such as cylinders and counterweights for front return.

The user sits on the saddle and simply pedals the pedal device alternately with the two lower limbs, which not only exercises the isometric muscle strength of the back muscles, but also exercises the isometric muscle strength of the abdominal muscles. muscle power. That is to say, the muscle strength strengthening exercise is not an exercise that directly exerts tension on the back muscles and abdominal muscles, but can strengthen the back muscles and abdominal muscles through a simple linear pedal exercise such as back and forth or up and down movements of the lower limbs. Muscles are exercised indirectly. In addition, it is not necessary to adopt the forward leaning posture of bad limbs like the conventional air bicycle type fitness equipment, that is, to adopt a forward leaning posture of the trunk relative to the waist or pelvis, and can exercise with excellent limbs. That is to say, in the case of the air bicycle type fitness equipment in the past, for the waist of the vertical posture on the saddle, due to making the upper body, that is, the torso, apply excessive power to the waist, so the muscles around the backbone are excessive. Tension brings the bad situation of muscular fatigue, and adopts the fitness equipment of the present invention, by making the trunk lean forward, the waist is also leaned forward accordingly, in other words, by making the whole body lean forward, And can form a good limb.

And, adopt the fitness equipment of the present invention, the pedaling motion to the long axis direction of the shank actually becomes a pendulum motion with the hip joint as the fulcrum, and the driving force output by the user maintains a certain tension due to the muscles of the lower limbs commensurate with the load. , On the one hand, the center of gravity of the torso becomes larger due to the movement of the center of gravity in progress, so the knee joint and the foot joint can maintain approximately constant joint angles regardless of the movement that applies load to the lower limbs. Therefore, the exercise of muscular strength can be performed while largely avoiding these joint movements. Usually, pain with movement occurs when the joint is moved excessively.

Therefore, even if the back muscles or abdominal muscles are weak, or even if the waist is sick, since excessive force is not applied to the waist, knees, ankles, etc., it is possible to perform pedaling exercises easily and happily, and it is possible to exercise the isometric muscles of these parts strength. By the way, the meaning of only sitting on the saddle and exercising the legs is the same as that of the previous air bicycle type fitness equipment, but there are essential differences in the form of exercise of the lower limbs. It is impossible for the air bicycle type exercise machine to carry out the exercise of above-mentioned isometric muscle strength effectively.

In addition, the pedaling movement in the direction of the long axis of the lower leg effectively absorbs the force applied to the joints of the knee and the foot by the muscle groups constituting the thigh and the lower leg, so that the force applied to the joints of the knee and foot can be greatly reduced. Burden on the joints. In addition, compared with other forms of exercise, the pedaling exercise in the direction of the long axis of the calf can transmit the exercise load to the trunk in a straight line and quickly. This also speeds up the transmission of the conduction and centripetal transmission information in the nerve fibers to the central nervous system. This means that the reflex bow (= the state of joint action of muscles) is formed very quickly, and it plays a great role in improving the coordination disorder between muscle groups.

In addition, with this fitness equipment, the pedaling motion of the pedal device is actually a linear motion, not the rotational motion of the pedals like the conventional air bicycle type fitness equipment. Therefore, the load can be continuously applied during the pedaling of the pedal device, and the cardiopulmonary exercise effect can be effectively obtained in a short time compared with an air bicycle type exercise machine. And, at the same time, it can also strengthen the isotonic muscle strength of the thigh and calf. By the way, in the case of the conventional air bicycle type fitness equipment, when the pedals are pedaled, that is, in the first half circle of the pedal rotation, a load of a specified value is applied to the lower limbs, and because the pedals rely on the inertia of the pedals in the second half circle of the pedal rotation Rotation, in other words, because the load is reduced to the extreme, the exercise loss becomes larger and the exercise efficiency is not sufficient, and in order to obtain sufficient cardiopulmonary exercise effect, the exercise time must be relatively prolonged.

In addition, the pedaling movement of the above-mentioned pedal device is a movement toward the long axis of the calf, which naturally includes movement along a straight line, but in addition, of course also includes movement along a curve or a circular arc with a certain curvature. It is sufficient to allow the user's lower limbs to perform a substantially linear pedaling movement backward.

In the fitness equipment of the above structure, when the user sits on the above-mentioned saddle, it is preferably constituted so that the foot pedal of the lower limbs can be performed within the range of 100°-220° of the angle formed by the trunk and the thigh. sports. If the angle does get smaller, this creates tension on the back muscles as the spine deforms into a straight line, which is undesirable for someone with low back pain. Depending on the user, when the above-mentioned angle is approximately 100°-110° or more, since such tension is hardly generated, there will be no excessive movement. In addition, the above-mentioned case where the angle is 180° means that the body is stretched upright, and an angle larger than this means that the body is bent backward. In the pedaling movement of the lower limbs, when the pedal device is pedaled backward, the lower limbs can move to an angle of about 220° depending on individual differences of users. The pedaling motion of the lower limbs is similar to the walking motion of the lower limbs when climbing a slope. In order to obtain the above-mentioned angle within the above-mentioned range, it is preferable to have a guide device that guides the movement of each pedal device to satisfy the conditions.

The guide means may be a device that guides each of the pedal devices rearward along a substantially straight line, or may be a device that guides the pedal devices rearward along an arc.

The above-mentioned guiding device is made of a swing arm with a balance weight connected to the upper end, and the upper end of the swing arm is pivotally supported on the substantially horizontal position of the saddle or seat body, and the above-mentioned pedal device can also be configured as a pivotally supported at the lower end of the swing arm. According to this structure, since the distance between the waist of the user and the pedal unit can be kept substantially constant during the pedaling movement of the pedal unit, the bending angle of the knee can be kept accurately constant.

Also, in order to satisfy the above-mentioned conditions, it is preferable to have a device for adjusting the position of the saddle (front-back position, up-down position). By adjusting the position of the saddle according to the user's figure, it is best to let the user sit on the above-mentioned saddle so that the angle formed by the trunk and the thigh is in the range of 100°-220° to perform pedaling exercises for the lower limbs . The above-mentioned saddle position adjusting device can be simply made into a mode that the saddle support bar is fixed on the seat body with a height adjustment screw or a height adjustment pin, and can also be made into a mode that the saddle support bar moves up and down with a hydraulic lifting device.

In addition, in order to satisfy the above-mentioned conditions, it is preferable to further have a handle device which is held by the user sitting on the above-mentioned saddle with both hands to stably support the torso. When the pedaling motion of the lower limbs is performed backward, the trunk is naturally moved forward as a reaction to the pedaling motion. The handle device is provided as a device for supporting the reaction force. The handle device can be composed of a handle that is directly held by hand and an arm that supports the handle in a height position and a front-rear position that can be adjusted freely.

The handle device preferably further includes an abdominal support device for supporting the user's trunk in a forward-leaning posture. The abdomen support device preferably includes an abdomen support pad, an anteversion angle adjusting device for adjusting the pad's anteversion angle, and a device for adjusting its height. The abdominal support pad is most effective for pedaling the lower limbs while supporting the torso in the forward leaning posture.

Moreover, it is more effective to further have an elbow support pad for supporting the user's elbow on the abdominal support pad.

Furthermore, in order to make the bending angle of the knee substantially constant during the pedaling of each of the pedal units, the load generating means preferably includes a second guide means for guiding each of the pedal units. According to this structure, since the flexion and extension movement of the knee hardly occurs, no load is imposed on the knee, so even people with knee diseases can exercise comfortably and happily.

In addition, the above-mentioned saddle preferably also has a saddle body, a saddle support platform for supporting the saddle above, and a foot pedal alternately followed by the user's two lower limbs sandwiched between the saddle body and the saddle support platform. A swing device that swings the waist from side to side when exercising. This swing device can simply be made of plate spring, helical spring, also can use air spring or make hydraulic electric type. Also, the saddle body can also be made of a soft material containing a gel-like substance. With such a structure, the exercise of stepping on the pedals can be performed comfortably without excessive force on the lower back. In addition, by swinging the waist in accordance with stepping on the pedals, it is easy to keep the bending angle of the knees constant.

In order to stably support the back of the sitting user on the saddle, a backrest device may be provided. In addition, in order to fit the body of the user, the backrest device may be composed of a backrest pad and an arm supporting the backrest pad in a height-position-adjustable manner.

The above-mentioned load generator makes the load on the pedal unit substantially constant during pedaling, and preferably further includes a control device for automatically returning the piston rod to the raised position together with the pedal unit when the pedaling force is released. However, from the viewpoint of the ease of pedaling of the lower limbs, it is best to control the initial load and the final load of pedaling to be small and to gradually increase the load between the initial stage and the final stage of pedaling. increase and then gradually decrease.

As a fitness machine of the most preferred form of the above-mentioned load generating device, it is preferable that each of the above-mentioned step devices is attached to a lower end. A pair of swing arms whose upper ends are pivotally supported on the above-mentioned saddle or the substantially saddle-level position of the above-mentioned seat body, and a belt driven by the swing motion of the swing arms and whose ends are connected to the above-mentioned loading device. As the loading device, an air-type or hydraulic-type working cylinder, and a counterweight used in conventional exercise machines of this type can be used.

In addition, as the most preferred form, there is also a plate cam device that rotates together with the rotation of the upper end of each of the above-mentioned swing arms, fixes one end of the above-mentioned belt together, and simultaneously guides the other end of the belt to the above-mentioned loading device along the cam peripheral surface. It is better to make the cam peripheral surface shape of the plate cam to control the load of the above-mentioned pedal device in the pedaling in a substantially constant range, and to control the pedaling initial load and the pedaling final load to be small and to make the pedaling load less The shape in which the load first gradually increases and then gradually decreases between the initial stage and the final stage.

Preferably, the above-mentioned control means further has means for adjusting the pedaling load of the pedal means. This is for responding to the user's physical strength.

The above-mentioned loading device is generally constituted by a cylinder. As mentioned above, the loading device may be composed of elastic devices such as coil springs, hydraulic devices, or counterweights, but it is preferable to use air cylinders using air pressure. In the case of an air cylinder, it is technically easy to configure the piston rod and the pedal device to return to the initial position in an instant when the pedaling force is released. In addition, it is easy to make the load of the pedal device substantially constant during pedaling, and when the pedaling force of the pedal device is released, the control device for automatically returning the piston rod to the initial position by ejecting the pedal device can work together. If the pedal device is configured to return to the initial position very quickly, the number of times the pedal is stepped on per unit time can be increased, so there is an advantage that time can be effectively used for exercise. In addition, as an important element of muscle strengthening exercise, it has been pointed out that a constant load should be continuously applied, and the fact that the load during pedaling is always approximately constant corresponds to this condition. Also, in this case, it is possible to calculate the amount of consumption of exercise energy, or the amount of exercise, with high precision. That is, it can be accurately calculated using the calculation formula of <load (force) x movement distance>. Important in recent years for such fitness machines is the clear indication of the amount of energy consumed per unit of time. By the way, in the case of the conventional air bicycle type exercise machine, since the load fluctuation during the pedal rotation is quite large, the energy consumption cannot be accurately calculated.

Above-mentioned cylinder preferably constitutes to have cylinder body, piston, piston rod, and cylinder body has the inner tube that accommodates the above-mentioned piston that needs reciprocating slide and piston rod, forms the outer tube of double-layer tube together with inner tube, the upper end of inner and outer tube is closed The upper plate through which the piston rod penetrates, the bottom plate which closes the lower ends of the inner and outer cylinders and makes the bottom of the inner cylinder space have open air holes open to the outside, and the first first connecting the upper parts of the inner and outer cylinder spaces and the inner cylinder space. connected device.

When the cylinder is used as a load device and is used to maintain a substantially constant load during the pedaling movement of the lower limbs, it is very important that the internal pressure of the cylinder does not fluctuate greatly during the movement of the piston. If the conventional technology is used, for Usually will use the cylinder with large capacity for this reason, if use small cylinder then must prepare the air storage tank connected with it in addition. However, according to the above-mentioned cylinder structure of the present invention, a pressure chamber equivalent to that of a conventional air tank can be ensured between the inner cylinder and the outer cylinder, and the size of the cylinder can be made sufficiently small.

The communication means is generally constituted by a through hole formed in the upper part of the inner cylinder.

In order to adjust the initial pressure of the inner and outer cylinder spaces and the inner cylinder space, it is necessary to have a pressure adjustment device. This above-mentioned pressure regulating device has the second communicating device such as the through hole that makes the above-mentioned inner and outer cylinder space communicate with the outside, the valve device connected with the second communicating device, the air compressor connected with the valve device, and the control valve device and the air compressor. Machine pressure control device. With this structure, the initial pressure in the cylinder can be easily controlled by the electric control device. In contrast, in the case of using a counterweight, since the counterweight must be directly adjusted, the operation is troublesome.

A brief description of the accompanying drawings:

The following drawings show preferred embodiments of the present invention.

Fig. 1 is the overall perspective view of the pedal recoil type fitness equipment according to the embodiment of the principle of the present invention.

Fig. 2 is a diagram showing the state of using the exercise machine of Fig. 1, but the user is a schematic representation of the model.

FIG. 3 is a diagram illustrating the pedaling motion of the exercise machine of FIG. 1 , but with the user shown schematically.

FIG. 4 is a rear view of the saddle of the exercise machine of FIG. 1 .

Fig. 5 is an explanatory view showing main parts of a kick recoil exercise machine according to a modified example of the above-mentioned first embodiment of the present invention.

Fig. 6, Fig. 7, and Fig. 8 respectively show a front view, a right side view, and a plan view of the whole kick recoil exercise machine according to the second embodiment of the present invention.

9 and 10 respectively show a right side view and a rear view of main parts of the saddle and its position adjusting device according to the second embodiment.

Fig. 11 is a right side view showing the main part of the abdomen support pad and its position adjusting device according to the second embodiment.

Fig. 12 is a cross-sectional view of the cylinder of the second embodiment.

Fig. 13 is an explanatory view showing the shape of the cam and the belt pulled by the cam according to the second embodiment.

Fig. 14 is a graph showing the relationship between the load applied to the user's lower limbs and the rotation angle of the lower limbs in the second embodiment.

Fig. 15 is a schematic diagram illustrating the pedaling exercise in the second embodiment.

The best form of implementing the present invention:

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.

1-4 show the whole of the pedal recoil exercise machine according to the first embodiment of the principle of the present invention. As shown in the figure, this instrument has a saddle 3 above a base body 1 in the form of a pedestal. As shown in Fig. 2 and Fig. 3, the user sits on the saddle 3 and performs fitness exercises through the pedaling movement of a pair of pedal devices on the seat body 1, specifically the pedal 2c.

The saddle 3 is configured by supporting a saddle body 3a on a saddle support stand 3c via three coil springs 3b. FIG. 4 shows the saddle viewed from the rear, and the coil springs 3b are arranged such that one is located at the front center of the saddle, and the other two are located at the rear, left, and right sides of the saddle. Therefore, the saddle body 3a can swing forward, backward, left, and right with respect to the saddle support base 3b.

At the left and right positions of the saddle 3 are provided a pair of handle units 5a-5d for supporting the user's trunk _H2 during exercise. Each handle unit is constituted by arm portions 5a-5c fixed to the left and right sides of the seat support 3c, and a handle 5d supported by the arm portions. The arm part consists of a first arm part 5a which is directly fixed on the saddle support platform 3c in an L-shape, a second arm part 5c which supports the handle 5d in an upright position, and a second arm part 5c which is used to freely adjust the two arm parts 5a. , The length of 5c and the elbow joint-shaped third arm portion 5b connected. Each of the arms 5b, 5c can be automatically slidably adjusted in the arrow Y direction and X direction, so the height position and front-rear position of the handle 5d can be adjusted.

At the back of the saddle 3, a backrest device supporting the body part _H2 of the user of the exercise machine from behind is provided. The backrest device is composed of an L-shaped backrest arm 6a directly connected to the saddle support 3c, and a back pad 6b attached to the arm so that its height can be freely adjusted. A plurality of screw holes 6c for height adjustment are formed on the back support arm 6a, and the pad 6b can be fixed at a more suitable height position for the user by the height adjustment screws 6a.

The saddle 3 is supported on the seat body 1 through the support rod 4 and the height can be adjusted freely. The upper end of the support rod 4 is fixed on the bottom surface of the saddle support platform 3c, and its lower end is inserted into the insertion port 1c formed in the front upper part of the seat cover 1a. A plurality of screw holes 4a are formed in the support rod 4, and the support rod 4 is fixed to the insertion opening 1c by height adjustment screws 4b so that the height position can be freely adjusted.

On the seat body 1, while supporting the above-mentioned pedals 2c, a pair of cylindrical air cylinders 2 are arranged on the left and right sides of the seat body as a load generating device for the user's lower limbs to perform pedaling motions substantially linearly. Each cylinder 2 has a cylinder body 2a and a piston rod 2b, and a pedal 2c is rotatably mounted on the tip of the piston rod 2b within a certain angle range. As shown in the figure, the arrangement direction of the cylinder 2a and the piston rod 2b is inclined from the upper front to the lower rear. The inclination angle is set to be suitable for the user to perform pedaling exercise.

7 in FIG. 2 is a schematically shown control device. The structure of the control device body is known, and the structure of the cylinder body with the control device is also known. With this control device, the load during pedaling can be kept at a substantially constant value all the time, and when the pedaling force is released, the piston rod can be ejected together with the pedal to automatically return to the raised position. That is, the load is substantially constant and does not vary at any position of the pedaling stroke during pedaling.

The control device 7 is connected to an external control board 7a. In the figure, the control panel 7a is arranged on the lower side of the seat cover 1a, but it may also be arranged on the handle 5d, or be positioned in front of the seated user through a special supporting device. The load of cylinder 2 can be adjusted by operating the control panel. In addition, a user's heart rate detection device (not shown) may be connected to the control device 7, and the load of the air cylinder may be automatically controlled based on the heart rate.

The usage method of the foot-operated fitness equipment with the above-mentioned structure will be described below according to FIG. 3 . The user adjusts the position of the saddle according to his body, and adjusts the load of the cylinder according to his physical strength and physical condition. Thereafter, the person sits on the saddle 3, puts the back against the back pad 6b, and starts to step on the pedals alternately with the lower feet while holding the pair of handles 5d with both hands. FIG. 3 shows a pedal that descends substantially linearly from an ascending position to a descending position when the pedal is stepped on by the lower limbs. In the raised position, the angle θ ₁ formed by the trunk portion H ₂ and the thigh portion H ₃ is preferably about 100°-120°. In addition, the angle _θ1 at the lowered position may be 180°, but in the drawing, it is set to an angle larger than 180° (up to about 220°). The setting of this angle depends on the setting of the height position of the saddle 3, the rising position and the falling position of the pedal 2c. In addition, the bending angle _θ2 of the knee _H1 is preferably approximately 90°, and the angle _θ2 preferably does not vary from the raised position to the lowered position. Therefore, the above-mentioned inclination angle of the cylinder 2 is set to satisfy this requirement. Moreover, as mentioned above, since the saddle body 3a can swing left and right, the waist can move up and down in the vertical direction Y as the pedal is stepped on, so the bending angle _θ2 of the knee can be kept approximately constant.

The pedaling motion of the pedal is performed by alternately moving the two lower limbs. During exercise, by holding the handle 5d and by abutting the back against the back pad 6b, the trunk portion _H2 can be stably supported. By performing the pedaling motion in this way, the back muscle group and the abdominal muscle group, especially the isometric muscle strength among them, are exercised in conjunction with the up and down oblique movement of the lower limbs. Certainly, since the lower limbs themselves are loaded, the isotonic muscle strength of the thigh _H3 and the calf _H4 are also exercised at the same time.

This foot-operated recoil type body building machine is owing to can make the torso upright on the saddle and move with good limb position (the angle θ ₁ is more than 90 °, does not apply the posture of useless tension to the dorsal muscles), so the motion itself It's lighthearted. And, since the motion of stepping on the pedal is basically an up and down motion, excessive force will not be applied to the waist, and furthermore, since the bending angle _θ2 of the knee is kept constant, there is no joint movement of the knee, so even the waist or knee People with medical conditions can also easily perform this exercise.

The above-mentioned embodiment is the structure that the piston rod 2b of the cylinder 2 is made to step on a straight line toward the rear obliquely, but as mentioned above, the step direction of the present invention may not necessarily be a straight line in the strict sense of geometry. . The pedaling direction of the piston rod 2b may actually be a so-called linear downward and rearward direction. In the strict sense of geometry, it may be a case of oblique downward and rearward along a curve or an arc. A modified example of this case is shown in FIG. 5.

The structure of this modified example is the same as that of the first embodiment, but there are the following points of difference. That is, each pedal 2c is pivotally supported on the top end of the piston rod 2b and at the same time is pivotally supported on the lower end of the swing arm 8 . The upper end of the swing arm 8 is pivotally supported on an appropriate position of the saddle 3 by a pivot P ₅ . When the pedal 2c is stepped on, the swing arm 8 swings along the circular arc _P2 as a whole like a pendulum around the pivot _P5 as a fulcrum. Therefore, the pedal 2c moves along this circular arc _P2 .

In addition, the cylinder 2 should pivot the rear end of the cylinder 2a on the base 1 with the pivot P ₄ along with the arc movement of the pedal 2c. Therefore, as the position of the pedal 2c on the arc _P2 changes, the entirety of the cylinder 2 appropriately swings in the direction of the arrow P3.

According to the structure of the above modified example, the moving locus of the pedal 2c is limited on the arc _P2 of the swing locus of the swing arm 8, and since the pivot _P5 of the swing arm 8 is pivotally mounted on the saddle 3, it is close to the user. The waist, so the distance between the waist and the pedal 2c is roughly constant. Therefore, the bending angle _θ2 of the knee part _H1 has the advantage that the angle is more constant and less likely to vary compared with the first embodiment, that is, the case where the straight line _P1 is used as the movement trajectory of the pedal. Pedal movement is also smoother than in a straight line.

Next, a second embodiment of the present invention will be described with reference to FIGS. 6 to 15 . The structure of this form is further improved and more convenient to use than the first embodiment.

In this embodiment, the base body 1 is constituted by a frame. The frame consists of a pair of side uprights 1d, a central front upright 1m, an upper frame and a lower frame. The upper frame is composed of a front frame member 1j and left and right frame members 1k and 1i connected to the left and right sides of the frame member 1j. In addition, the bottom frame is composed of a front frame member 1f, a rear frame member 1h, and left and right frame members 1e, 1g connected to the left and right of these frame members 1f, 1h. The upper and lower ends of the central front pillar 1m are connected to the upper and lower front frame members 1j and 1f.

Symbol 3 represents a saddle among the figure. The saddle 3 is located substantially at the center of the frame seat body 1, and is composed of a saddle body 3a and a saddle support stand 3c below it. The saddle body 3a is made of a soft material such as urethane foam or gel-like substance filled in a surface cover. These soft materials play the same role as the coil spring 3b in the first embodiment. The saddle 3 is freely adjustable in height and position by the support rod 4 and is supported on the frame seat body, that is to say, the frame member 1n that supports the saddle is stretched out from the middle part of the central front column 1m to the back side, as shown in Figure 9, As shown in FIG. 10, a saddle support rod 1p is inserted into this frame member 1n in the form of a sleeve. Then, the support rod 4 is inserted from above into the through hole of the block 4c fixed to the tip end of the saddle support rod 1p. The support rod 4 has a suitable number of height adjustment holes 4a, and the base block 4c has pins 40b inserted into these holes 4a. Similarly, an appropriate number of distance adjustment holes 1q are provided in the saddle support rod 1p, and pins 4d for insertion into these holes 1q are provided in the frame member 1n for supporting the saddle. Therefore, the height position of the saddle and the horizontal front-rear position can be adjusted.

A support plate 22 is provided on the upper front side of the upper frame, and the support plate 22 supports a pair of handles 5d on the left and right, a pair of elbow support pads 19 on the left and right, and one abdominal support pad 18 on the support plate. One end of the support plate 22 is pivotally supported on the guide rod 21 . The guide rod 21 is supported by a pair of bearing blocks 20 fixed to the side support frame member 1k. Therefore, the support plate 22 can be rotated upward with the guide rod 21 as an axial direction and opened, and can slide along the guide rod 21 at the same time. In addition, the other end of the support plate 22 is supported by the side frame member 1i. The pin plate 22 a is fixed under the other end of the support plate 22 . The pin plate 22 a is a member in which pins (not shown) protrude from the lower surface of the gap adjustment plate of the support plate 22 . The pins can be fitted into the linear pin holes 22b formed on the upper surface of the side frame member 1i, and the front and rear positions of the support plate 22 can be positioned. In addition, each handle 5d is fixed to the support plate 22 so that the height can be adjusted freely via the arm 5c.

As clearly shown in FIG. 15, the abdominal support pad 18 and the elbow support pads 19 are members that effectively support the torso _H2 of the user who sits on the saddle 3 in a forward leaning posture together with the handle 5d. Each elbow support pad 19 is supported on a support plate 22 . In addition, as shown in detail in FIG. 11, the abdomen support pad 18 is fixed with a bracket 18a at the upper central part of the rear surface of the pad 18, and the upper part of the support column 23 is pivotally supported on the bracket 18a. And this support column 23 penetrates the support plate 22 vertically. The support column 23 has an appropriate number of height adjustment holes 23a, and a pin 24 is inserted into each hole 23a. The pin 24 is inserted through an insertion hole formed in the support plate 22 . Therefore, the height position of the abdomen support pad 18 can be adjusted. In addition, reference numeral 26 in the figure is a pair of adjustment screws for adjusting the inclination angle of the abdominal support pad 18, and is screwed into a screw hole provided on the support plate 22 so that its top end abuts against the lower back of the pad 18. By the forward and backward movement of each adjusting screw 26, the pad 18 rotates with the upper part of the support column 23 as a fulcrum, and the inclination angle thereof can be adjusted. Also, as mentioned above, in this embodiment, since the user performs the pedal exercise in a forward leaning posture, the backrest device seen in the first embodiment is eliminated.

In this embodiment, a pair of foot levers 30 are used as the pedal device. The pedal rod 30 is fixed to the lower ends of the pair of left and right swing arms 8 . Each foot lever 30 protrudes horizontally from each swing arm 8 inward, left, and right. Each pedal lever 30 has a stop 10 . The user's feet are placed inside the block 10 . When each pedal bar is pedaled backward, there is a tendency to slide the feet to the outside and open the feet to the outside, but the stopper 10 can prevent the opening of the feet. The upper ends of each swing arm are fixed on each shaft 11 . The shafts 11 are rotatably provided on the upper portions of the side columns 1d. The respective shafts 11 protrude from the inner side to the outer side through each column 1d. The swing arms 8 are fixed inside the shafts 11 . In addition, a cam 14 and a balance weight 13 are respectively fixed to the column outer portion of each shaft 11 . The weight of the balance weight 13 is adjusted so that the weights of the swing arms and the pedal rods are balanced and the pedaling load is substantially zero.

The details of the shape of each cam 14 are shown in FIG. 13 . This cam is a plate cam and has a substantially elliptical shape as a whole, and its base end is fixed to the shaft 11 . Flanges 14a are provided on both sides of the free end of the cam and form a cam groove therebetween. One end of the belt 17 is fastened to this cam. That is, the belt 17 is aligned and supported on the free end peripheral surface of the cam, and its fixed end 17a is fixed to the cam peripheral surface.

A belt 17 is connected to each cylinder 2 via a small pulley 16 . The small pulley 16 is pivotally supported on the rear of each of the side frame members 1i, 1k and on the outer side thereof. The disposition method of each cylinder 2 is very different from that of the first embodiment, and is vertically fixed on the bottom frame. The end of the belt 17 is connected to the upper end of the piston rod 2 b of each cylinder 2 . Therefore, as shown in FIG. 15, when the user pedals each pedal rod 30 backward with the lower limbs, the belt 17 is pulled forward, and the piston rod 2b is lifted upward.

The cam shape of the cam 14 relates to what kind of load is applied to the lower extremity during pedaling, and is now described as follows based on FIGS. 13 and 14 .

FIG. 13 shows the initial position of the cam at an angle of 45° with the horizontal axis as a reference, and the cam rotates 90° to the left in the figure together with the swing arm through the pedal movement. When the cam 14 has the cam peripheral shape shown in the figure, the relationship between the pedaling angle and the load applied to the lower foot is in the state of the curve shown in the graph of FIG. 14 . That is, the load is generally constant as a whole, but gradually increases from the initial stage of the pedaling exercise to reach a peak, and then gradually decreases toward the final stage of the pedaling exercise. This is because the cam shape is elliptical, so that the distance between the cam peripheral surface and the shaft 11 changes. Therefore, the moving distance of the belt 17 per unit circumferential angle of the cam also changes. Therefore, pedaling can be performed smoothly. That is, in the initial stage of the pedaling exercise, the pedaling is easy because the load is relatively reduced. Furthermore, the load gradually increases with the acceleration of the pedaling. In addition, in the final stage of the pedaling exercise, since the lower limbs are bent backward with respect to the trunk, it is difficult to exert force. Therefore, the load is relatively reduced in the final stage.

The structure of the cylinder 2 will be described in detail below with reference to FIG. 12 .

The above-mentioned cylinder 2 has a cylinder body 2a, a piston 2f, and a piston rod 2b. The cylinder body is a double-walled structure, that is, the cylinder body is composed of an inner cylinder 2m and an outer cylinder 2c. The inner cylinder is a member corresponding to a conventional cylinder body, and the above-mentioned piston 2f and piston rod 2b are accommodated therein so as to reciprocate and slide. In addition, an inner and outer cylinder space 2p is formed between the outer cylinder 2c and the inner cylinder 2m. An appropriate number of through holes 2n are formed on the upper portion of the inner cylinder 2m to communicate the inner cylinder space 2q with the inner and outer cylinder spaces 2p. The upper and lower ends of the inner and outer cylinders are closed with respective upper plates 2d and bottom plates 2e. The bottom plate 2e has open air holes 2g that open the bottom of the inner cylinder space 2q to the outside. In addition, a pressure adjusting device for adjusting the initial pressures of the inner and outer cylinder spaces 2p and the inner cylinder space 2q is provided. This pressure adjusting device has an air pressure adjusting air hole 2h formed on the bottom plate 2e for communicating the inner and outer cylinder space 2p with the outside, a valve 2j connected to the air hole 2h, an air compressor 2k connected to the valve 2j, and a control valve 2j. And the pressure control device of the air compressor 2k is the control panel 7b. The control panel 7b is fixed to the front frame member 1j.

In the final analysis, the cylinder body is made into the above-mentioned double-layer structure in order to save the gas storage tank and simultaneously make the cylinder miniaturized. The cylinder is made to reduce the volume of the inner cylinder and increase the volume of the outer cylinder. Assume that when the through hole 2n is closed without the through hole 2n, the pressure in the inner cylinder changes due to the vertical movement of the piston in the inner cylinder 2m due to the vertical movement of the piston caused by the user's foot pedaling. That is, the pressure becomes larger in proportion to the increase in the pedaling amount of the pedaling. If this is the case, it becomes impossible to perform smooth pedaling. An excessive rise in pressure within the inner cylinder must be prevented. As in the past, an air tank connected to the inner cylinder is used. On the other hand, in this cylinder, the outer cylinder 2c is used instead of the air tank. That is to say, since the inner cylinder space 2q communicates with the inner and outer cylinder space 2p through the through hole 2n, the pressure change in the inner cylinder space can be absorbed by the large-capacity fluid in the inner and outer cylinder spaces, and the variation can be suppressed to negligible by the design of the cylinder. Degree. And, because through hole 2n can make its opening area large enough, its number and shape also can be arbitrarily set simultaneously, so the air flow resistance of through hole 2n can be made small enough and have the ability to make pressure change The advantages of making changes are minimal. In the conventional case of using an air tank, since the resistance of the piping connecting the air tank to the air cylinder is relatively large, the pressure change is relatively large compared with the air cylinder of the present embodiment.

Claims (27)

1. kicking type training apparatus, has pedestal (1), be installed in the saddle (3) that supplies the user to take a seat on the pedestal (1), and make the load generation device that the time spent puts on load in two lower limb at user's two lower limb, it is characterized in that, described load generation device have the bipod that puts the user and by the rearward foot-operated motion that replaces of user's two lower limb to equidirectional mobile pair of pedals device (2c, 30), and for each device with pedal (2c, 30) rearward move applies load and for each device with pedal (2c, 30) load device (2a) that the power that scrunches forwards automatically replies each device with pedal when removing.

2. fitness equipment as claimed in claim 1, it is characterized in that, described load generation device also has the 1st guider (2,8) that each device with pedal (2c, 30) is led, so that allow the user under the state that takes a seat on the described saddle (3), and can be at trunk (H ₂) and huckle (H ₃) angle (θ that constitutes ₁) be the foot-operated motion of carrying out lower limb in 100 °-220 ° the scope.

3. fitness equipment as claimed in claim 2 is characterized in that, described the 1st guider (2) makes described each device with pedal (2c) rearward along roughly leading point-blank.

4. fitness equipment as claimed in claim 2 is characterized in that, described the 1st guider (8) rearward leads described each device with pedal (30) along circular arc ground.

5. fitness equipment as claimed in claim 4, it is characterized in that, described the 1st guider (8) is made of swing arm (8), the upper end pivot of described swing arm (8) prop up described saddle (3) go up or the roughly saddle level of pedestal (1) on, propping up device with pedal (2c) at the lower ending pivot of described swing arm (8).

6. fitness equipment as claimed in claim 5 is characterized in that, the upper end of described swing arm (8) is connected with counterweight (13).

7. fitness equipment as claimed in claim 2, it is characterized in that, described load generation device has the 2nd guider (2,8) that each device with pedal (2c, 30) is led, so that the angle of bend of knee (θ 2) is roughly in the scrunching of described each device with pedal (2c, 30) is certain.

8. fitness equipment as claimed in claim 1 is characterized in that, also has the user who takes a seat and grip so that stably support trunk (H with two hands on described saddle (3) ₂) door handle device (5a-5d).

9. fitness equipment as claimed in claim 8 is characterized in that, described door handle device (5a-5d) have the gripping of being directly used in handle (5d) and to the height and position of this handle and front and back position can be freely the support arm (5a-5c) of supporting with adjusting.

10. fitness equipment as claimed in claim 1 is characterized in that, also has adjusting device that the position of described saddle (3) is adjusted (4,4a, 4b, 4c, 4d, 1p, 1q).

11. fitness equipment as claimed in claim 1 is characterized in that, also has the trunk (H with forward lean supporting user ₂) belly supporting arrangement (18,22,23,24,26), the forward leaning angle adjusting device (22,23,24,26) that described belly supporting arrangement has belly supporting liner (18) and the forward leaning angle of this liner (18) is adjusted.

12. fitness equipment as claimed in claim 1 is characterized in that, also has the ancon supporting arrangement (19) of supporting user ancon.

13. fitness equipment as claimed in claim 1, it is characterized in that, described saddle (3) also have saddle body (3a), this saddle body is supported on the Saddel receiver platform (3c) of top and is clipped in the saddle body with the Saddel receiver platform between, along with about the waist of generation when the motion of the footing alternatively of user's two lower limb and driven and about the pendulous device (3b) swung.

14. fitness equipment as claimed in claim 1, it is characterized in that, described saddle (3) has saddle body (3a) and this saddle body is supported on the Saddel receiver platform (3c) of top, saddle body (3a) loose the swinging of waist that can produce when alternately ride motion at user's two lower limb and driven flexible material formation.

15. fitness equipment as claimed in claim 1 is characterized in that, also has the back-rest means for chair (6a-6d) that stably is bearing in the user back that takes a seat on the described saddle (3).

16. fitness equipment as claimed in claim 15 is characterized in that, the support arm (6a) that described back-rest means for chair has back rest cushion (6b) and this back rest cushion is freely adjusted height and position and supported.

17. fitness equipment as claimed in claim 1, it is characterized in that, described load generation device also have make the load of device with pedal (2c, 30) in scrunching for certain value roughly and remove pedal scrunch power the time make piston rod (2b) automatically return to the control device (7) of lifting position with device with pedal (2c, 30).

18. fitness equipment as claimed in claim 17, it is characterized in that, described control device (7) has makes the load of device with pedal (2c, 30) in scrunching in roughly certain scope and be controlled to and should make that to scrunch initial stage load and scrunch final load be less, and between initial stage that scrunches and terminal stage, be controlled to increase gradually earlier and reduce gradually then scrunch load increase and decrease device (7,14).

19. fitness equipment as claimed in claim 1, it is characterized in that, described load generation device have the lower end described each device with pedal (30) is installed and the upper end pivot prop up described saddle (3) go up or the roughly saddle horizontal level of described pedestal (1) on a pair of swing arm (8), and the belt (17) that utilizes the oscillating motion of swing arm (8) to drive and its end is connected with described load device (2a).

20. fitness equipment as claimed in claim 19, it is characterized in that, also have with the rotation of the upper end of described each swing arm (8) and rotate, and an end that makes above-mentioned belt (17) is fixing together and along the cam side face its other end is guided to the plane cam device (14) of described load device (2a) simultaneously, and the cam side face of described plane cam device (14) has described device with pedal (2c, 30) load in scrunching is controlled in roughly certain scope, and be controlled to make to scrunch initial stage load and scrunch final load and be less and make the load between initial stage that scrunches and terminal stage increase the shape that reduces gradually then earlier gradually.

21. fitness equipment as claimed in claim 17 is characterized in that, described control device (7) also has the device that scrunches load (7a, 2j, 2k) of adjustment device with pedal (2c, 30).

22. fitness equipment as claimed in claim 1 is characterized in that, described load device is cylinder (2).

23. fitness equipment as claimed in claim 22 is characterized in that, described device with pedal is pedal (2c), and this pedal is installed in the top of the piston rod (2b) of above-mentioned cylinder (2).

24. kicking type training apparatus as claimed in claim 22, it is characterized in that, described cylinder (2) has cylinder body (2a), piston (2f), and piston rod (2b), cylinder body has makes described piston and piston rod can reciprocatingly slide and hold wherein inner core (2m), constitute the urceolus (2c) of two layered cylinder with inner core, the upper end of sealing inner/outer tube and the upper plate (2d) that piston rod is connected, the lower end of sealing inner/outer tube and base plate (2e) with open pores (2g) that the bottom of inner core space (2q) is opened to the outside, and the 1st communication apparatus (2n) that inner/outer tube space (2p) and inner core space (21) are communicated with on their top.

25. kicking type training apparatus as claimed in claim 24 is characterized in that, described the 1st communication apparatus is the through hole (2n) that forms on the top of described inner core (2m).

26. fitness equipment as claimed in claim 24 is characterized in that, also has the pressure regulation device of the initial stage pressure of adjusting described inner/outer tube space (2p) and inner core space (2q).

27. fitness equipment as claimed in claim 26, it is characterized in that described pressure regulation device comprises: the pressure control device that makes described inner/outer tube space (2p) and the 2nd communication apparatus (2h) of external communications, the valve gear (2j) that is connected with the 2nd communication apparatus (2h), the air compressor (2k) that is connected with valve gear (2j), control valve device (2j) and air compressor (2k).

Images