JP2015043789A - Training device and muscular force measurement device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detect an actually applied load in a damper type training device, and to measure muscular force by use of a damper.SOLUTION: In a training device, a connection plate 6 is formed by integrally molding: a rectangular outer frame part 61 in which the long direction has a nearly same length as a diameter of a support plate 5, and in which four corner parts are chamfered; a disk-like coupling part 62 positioned inside the outer frame part 61 apart from the outer frame part 61, and formed with a threaded hole in the center; and connection parts 63a, 63b connecting the coupling part 62 and the outer frame part 61. Strain gauges 71a, 71b are respectively stuck to the connection parts 63a, 63b. Based on a resistance change of the strain gauges 71a, 71b, the training device calculates a load applied to a damper 4.

Description

  The present invention relates to a training apparatus used for maintaining and improving muscle strength and physical strength, and an apparatus for measuring muscle strength.

  Conventionally, many training apparatuses have been proposed to maintain and improve muscle strength and physical strength. In these training apparatuses, there are a weight stack method, a spring method, a damper method, and the like as methods for applying a load to the user. In the weight stack type and spring type training apparatus, even when the user stops the exercise on the way, the load on the user continues to be applied. Moreover, the load can be applied only in one direction. Furthermore, in the case of a spring type training apparatus, the load increases as the amount of displacement of the spring increases, and it is difficult to make the load constant.

  On the other hand, in a damper type training apparatus in which the rod enters and exits the cylinder, a load is generated only when the rod expands and contracts. That is, when the user stops exercising, no load is applied to the user, so safety is ensured even when the elderly person uses it. In addition, in the damper type training apparatus, a load can be applied when the rod is extended or contracted, that is, in both directions. For this reason, in recent years, various damper type training apparatuses have been proposed (see, for example, Patent Document 1).

JP 2006-296863 A

  However, in conventional damper-type training devices, although the exercise load can be changed step by step with a dial or the like, it is unclear how much load is actually applied. For this reason, the exercise load must be determined by the user's sense, and the exercise effects such as the improvement of the muscular strength cannot be expressed numerically.

  Further, in the method of applying a load to the damper, since the actual load is not known, there has been no conventional muscle strength measuring device that applies a load by the damper.

  The present invention has been made in view of such conventional problems, and an object of the present invention is to provide a training apparatus that can detect how much load is actually applied.

  Another object of the present invention is to provide a muscle strength measuring device that applies a load by a damper.

  A training apparatus according to the present invention that achieves the above object includes a load generating means provided between a movable portion capable of repetitive movement and the apparatus main body, and a detecting means for detecting a load applied to the load generating means. It is characterized by that.

  Here, the load generating means is preferably a damper having a cylinder and a piston rod that can be freely moved in and out of the cylinder. One of the cylinder and the piston rod is connected to the apparatus main body, and the other is Is preferably connected to the movable part.

  Further, one end of the cylinder is connected to the apparatus main body or the movable part via a connecting member, and the connecting member is separated from the outer frame part on the inner side of the outer frame part and the outer frame part. A connecting portion that is positioned, and a connecting portion that connects the outer frame portion and the connecting portion, wherein one of the outer frame portion and the connecting portion is connected to one end of the cylinder, and the other is the device body or It is preferable that it is connected to the movable part.

  It is preferable that the detection unit includes a strain gauge that detects a strain generated in the load generation unit, and a calculation unit that calculates a load based on the strain detected by the strain gauge.

  The strain gauge is preferably attached to the connection portion of the connecting member.

  You may further provide the memory | storage means to memorize | store the log | history of the load detected by the said detection means.

  Moreover, you may further provide the display means which displays the load detected by the said detection means.

  According to the invention, there is provided a muscular strength measuring device including a load generating means provided between a movable part capable of repetitive movement and the apparatus main body, and a detecting means for detecting a load applied to the load generating means. The load generating means is a damper including a cylinder and a piston rod that can be freely moved in and out of the cylinder. One of the cylinder and the piston rod is connected to the apparatus main body, and the other is a movable part. There is provided a muscle strength measuring device characterized by being connected to the body.

  Here, one end of the cylinder is connected to the apparatus main body or the movable part via a connecting member, and the connecting member is separated from the outer frame part on the inner side of the outer frame part and the outer frame part. A connecting portion that is positioned, and a connecting portion that connects the outer frame portion and the connecting portion, wherein one of the outer frame portion and the connecting portion is connected to one end of the cylinder, and the other is the device body or It is preferable that it is connected to the movable part.

  The detection unit preferably includes a strain gauge that detects strain generated in the load generation unit, and a calculation unit that calculates a load based on the strain detected by the strain gauge.

  The strain gauge is preferably attached to the connection portion of the connecting member.

  You may further provide the memory | storage means to memorize | store the log | history of the load detected by the said detection means.

  Display means for displaying the load detected by the detection means may be further provided.

  In the training apparatus according to the present invention, since an actual load can be detected, the effect of exercise can be grasped as a numerical value, and training can be performed while checking the effect. Thereby, the most suitable training can be instructed for each user.

  Moreover, in the muscular strength measuring device according to the present invention, since the damper is used as the load generating means, the device structure can be simplified and the device can be reduced in weight.

It is a perspective view which shows an example of the training apparatus which concerns on this invention. It is a side view which shows an example of the training apparatus of FIG. It is a side view of the damper which attached the support plate and the connection plate. It is a perspective view which shows the attachment state of a support plate and a connection plate. It is a block diagram of a training apparatus. It is a figure showing the example of a display of a display panel.

  Hereinafter, although the training apparatus concerning the present invention is explained based on a figure, the present invention is not limited to these embodiments at all. Moreover, the training apparatus demonstrated below can be used also as a muscular strength measuring apparatus.

  FIG. 1 is a perspective view showing an example of a training apparatus according to the present invention, and FIG. 2 is a side view. The training apparatus shown in these drawings is a training apparatus that trains the quadriceps muscles by leg extensions and trains a hamstring by leg curls, and has a substantially H-shaped foundation frame 11 and a foundation frame in plan view. 11 has a seating frame 12 whose one end is connected and the other end is inclined upward toward the front side, and two support columns 13 and 14 interposed between the base frame 11 and the seating frame 12. A seat pad 31 is attached on the seat frame 12. A backrest 32 is attached to the rear end portion of the seat pad 31 via a connecting plate 33. The backrest 32 can change the inclination angle stepwise or steplessly from a state substantially perpendicular to the seat pad 31 to a flat state. Usually, the backrest 32 is in a substantially vertical state with respect to the seat pad 31 when the leg extension is performed, and is flat when the leg curl is performed. Further, grips 34 a and 34 b are provided on both the left and right sides of the connecting plate 33, extending in the left-right direction and then extending forward.

  Near the front end of the seating frame 12, there is provided a crank frame 16 that protrudes outward from one end of the seating pad 31 and then extends upward. Operation pads 22a and 22b are provided at the upper end of the crank frame 16, respectively. A supporting arm (movable part) 21 is pivotally supported. The damper 4 is interposed between the arm 21 and a support bar (device main body) 15 provided on the support column 13 and projecting sideways.

  FIG. 3 shows a front view of the damper 4. The damper 4 in FIG. 3 is a direct-acting hydraulic damper, and includes a cylinder 41 and a piston rod 42 that can be moved in and out of the cylinder 41. When the piston rod 42 enters and exits the cylinder 41, a load is generated by the oil filled in the cylinder 41. The generated load varies depending on the moving speed of the piston rod 42. The maximum load of the damper 4 can be adjusted stepwise by the adjustment dial 43. The maximum use load of the damper used in the present invention is usually about several tens of MPa.

  The damper 4 is attached to the arm 21 and the support bar 15 by attaching a joint portion 44 provided at the tip of the piston rod 42 to the arm 21 and connecting the rear end of the cylinder 21 to the support plate 5 and the connection plate (connection member). 6 to the support bar 15. FIG. 4 is a perspective view showing a connection state of the cylinder 41, the support plate 5, and the connecting plate 6. As shown in FIG.

  The support plate 5 is a disk having a diameter substantially the same as the diameter of the cylinder 41, and a through hole 51 is formed in the center. The connecting plate 6 has a longitudinal direction substantially the same as the diameter of the support plate 5, and has a rectangular outer frame part 61 with four corners chamfered, and is spaced from the outer frame part 61 inside the outer frame part 61. The connecting portion 62 that is located in a disc shape and has a screw hole formed in the center thereof, and the connecting portions 63a and 63b that connect the outer frame portion 61 and the connecting portion 62 at an opposing position on the outer periphery of the connecting portion 62 are integrally formed. Become. And the strain gauges 71a and 71b are affixed on the connection parts 63a and 63b, respectively.

  The support plate 5 is threaded into a screw hole (not shown) formed at the center of the rear end surface of the cylinder 41 by inserting a screw member 91 (shown in FIG. 3) through a through hole 51 formed at the center of the support plate 5. By fitting, the cylinder 41 is attached to the rear end surface. The connecting plate 6 is attached to the support plate 5 by the four screw members 92 so that the outer frame portion 61 is spaced apart from the support plate 5. The joint member 45 is screwed into the screw hole of the connecting portion 62 of the connecting plate 6, and the joint member 45 is connected to the support bar 15.

  The arrangement of the support plate 5 and the connection plate 6 may be reversed, the connection plate 6 may be attached to the rear end surface of the cylinder 41, and the support plate 5 may be attached to the connection plate 6. Alternatively, if structurally possible, the connection plate 6 may be directly attached so as to face the rear end surface of the cylinder 41 without using the support plate 5.

  In the training device having such a configuration, for example, when performing leg extension, the user sits on the seat pad 31 and inserts the ankle between the operation pad 22a and the operation pad 22b. Then, the grips 34a and 34b are grasped with both hands, and the operation pads 22a and 22b are lifted upward with both feet. Then, the arm 21 that supports the operation pads 22a and 22b swings about the shaft 17. As described above, the damper 4 is interposed between the arm 21 and the support bar 15, and when the arm 21 swings, the piston rod 42 of the damper 4 enters and exits the cylinder 41. At that time, viscous resistance (motion load) against the piston rod 42 is generated by the oil filled in the cylinder 41.

  In the conventional training apparatus, although the maximum load of the damper 4 can be adjusted stepwise by the adjustment dial 43, it is unknown how much exercise load is actually applied. On the other hand, in the training device of the present invention, it is possible to grasp how much exercise load is actually applied by the strain gauges 71a and 71b provided at the connection portions 63a and 63b of the connecting plate 6.

  Specifically, when a force is applied to the damper 4 by the swing of the arm 21, a force is applied to the outer frame portion 61 of the connecting plate 6 via the support plate 5, and the connecting portions 63 a and 63 b are deformed. When the connecting parts 63a and 63b are deformed, the resistances of the strain gauges 71a and 71b attached to the connecting parts 63a and 63b change. The load of the damper 4 is calculated by measuring the resistance change of the strain gauges 71a and 71b.

  FIG. 5 shows a block diagram of the training apparatus. The detection means 7 includes strain gauges 71a and 71b, a resistance measurement unit 72 connected to the strain gauges 71a and 71b, and a calculation unit 73 that calculates a load from the measurement values. The resistance change of the strain gauges 71a and 71b is converted into a voltage change by using the Wheatstone bridge circuit in the resistance measuring unit 72 and sent to the calculating unit 73 through an interface such as analog / digital conversion. Then, the calculation unit 73 calculates the load. The calculated load of the damper 4 is sent and displayed on the display panel P via the bus B, and is sent to the storage means 8 and stored therein. Moreover, it can also transmit to the external apparatus from the transmission / reception means 9 as needed.

  FIG. 6 shows a display example of the display panel P. In the display panel P of this figure, the actual load (2.3 kg) by the damper 4, the speed (−−−) of the piston rod 42, the movement time (1:58), the number of repetitions of the piston rod 42 (23 times), the piston The maximum stroke (16.8 cm) of the rod 42 is displayed.

  Such a load display or the like displayed on the display panel P allows the user to grasp the improvement in muscular strength as a number rather than a sense, leading to an increase in motivation. In addition, doctors and physical therapists can perform appropriate diagnosis and exercise guidance by grasping the actual exercise load of the patient. If a USB memory is used as the storage means 8, for example, when using a plurality of different training devices, the USB memory is attached to the device every time a different training device is used, and the exercise load in the training device is stored. By doing so, the exercise load in each training apparatus can be stored together.

  The training device described above is a device that performs leg extension, but the present invention is not limited to this, and can be applied to conventionally known training devices such as an addition, chest press, and leg press. In addition to the hydraulic damper, a conventionally known one such as an air damper can be used as the damper 4, and a load may be applied in both directions with respect to the piston rod 42 entering and exiting. Only a load may be applied. Furthermore, as described above, the training device described above can also be used as a muscle strength measuring device.

  The training apparatus according to the present invention is useful because it can detect an actual load and can grasp the effect of exercise as a numerical value. Moreover, in the muscular strength measuring device according to the present invention, since the damper is used as the load generating means, the device structure can be simplified and the weight of the device can be reduced.

4 Damper 6 Connection plate (connection member)
7 Detection means 8 Storage means P Display panel (display means)
15 Support bar (device main body)
21 Arm (movable part)
41 cylinder 42 piston rod 61 outer frame part 62 connecting part 63a, 63b connecting part 71a, 71b strain gauge 73 calculating part

Claims (13)

  A training apparatus, comprising: load generating means provided between a movable portion capable of repetitive movement and the apparatus main body; and detection means for detecting a load applied to the load generating means.   The load generating means is a damper having a cylinder and a piston rod that can be freely moved in and out of the cylinder. One of the cylinder and the piston rod is connected to the apparatus main body, and the other is connected to a movable part. The training device according to claim 1. One end of the cylinder is connected to the apparatus body or the movable part via a connecting member,
The connecting member has an outer frame part, a connecting part positioned away from the outer frame part inside the outer frame part, and a connecting part connecting the outer frame part and the connecting part,
The training apparatus according to claim 2, wherein one of the outer frame part and the connection part is connected to one end of the cylinder, and the other is connected to the apparatus main body or the movable part.   The said detection means has a strain gauge which detects the distortion which arises in the said load generation means, and a calculation part which calculates load based on the distortion detected by the said strain gauge. Training device.   The detection means includes a strain gauge that detects strain generated in the load generation means, and a calculation unit that calculates a load based on the strain detected by the strain gauge, and the strain gauge is attached to the connection portion. The training device according to claim 3.   The training apparatus according to claim 1, further comprising a storage unit that stores a history of loads detected by the detection unit.   The training apparatus according to claim 1, further comprising display means for displaying a load detected by the detection means. A muscle force measuring device comprising a load generating means provided between a movable part capable of repetitive movement and the apparatus main body, and a detecting means for detecting a load applied to the load generating means,
The load generating means is a damper provided with a cylinder and a piston rod that can be freely moved in and out of the cylinder. One of the cylinder and the piston rod is connected to the apparatus main body, and the other is connected to a movable part. A muscular strength measuring device. One end of the cylinder is connected to the apparatus body or the movable part via a connecting member,
The connecting member has an outer frame part, a connecting part positioned away from the outer frame part inside the outer frame part, and a connecting part connecting the outer frame part and the connecting part,
The muscle strength measuring device according to claim 8, wherein one of the outer frame portion and the connecting portion is connected to one end of the cylinder, and the other is connected to the device main body or the movable portion.   The muscle strength measuring device according to claim 8 or 9, wherein the detection unit includes a strain gauge that detects strain generated in the load generation unit, and a calculation unit that calculates a load based on the strain detected by the strain gauge. .   The detection means includes a strain gauge that detects strain generated in the load generation means, and a calculation unit that calculates a load based on the strain detected by the strain gauge, and the strain gauge is attached to the connection portion. The muscular strength measuring device according to claim 9.   The muscle strength measuring device according to any one of claims 8 to 11, further comprising storage means for storing a history of loads detected by the detecting means.   The muscle strength measuring device according to any one of claims 8 to 12, further comprising display means for displaying a load detected by the detecting means.