JP2009247449A - Elastic band in exercise apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elastic band in an exercise apparatus which is capable of urging a user to replace the elastic band before the elastic band is cut because of the deterioration for improving the safety. <P>SOLUTION: The elastic band 50-1 in the exercise apparatus for the user 100 to get exercise by applying the force to the elastic band against the elasticity has a cutting predicting part 54 capable of predicting cutting of the elastic band 50-1. The cutting predicting part 54 is a part where a plurality of elastic bands 50A and 50B are bundled and where at least one of the elastic bands is cut. As the user 100 looks at the cutting predicting part 54, the cutting predicting part can urge the user 100 to replace the elastic band before the elastic band 50-1 is cut because of the deterioration. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an elastic band in an exercise device.

  2. Description of the Related Art Conventionally, there is an oscillating motion apparatus that includes a seat portion on which a user is seated, a drive portion that swings the seat portion, and a leg portion that supports the drive portion (see Patent Document 1).

  In this exercise device, the user sitting on the saddle-shaped seat moves the lower body to maintain balance in response to the swinging of the seat back and forth, left and right. It is for training. In such an exercise device, there is a desire to train the muscles of the upper body simultaneously with the muscles of the lower body of the user.

For this reason, an elastic band (stretch band) is provided that allows the user sitting on the seat to grip the tip (grip, etc.) with his / her hand, and the base end of this elastic band is locked by the locking part of the leg. An exercise device that can be considered. In this exercise device, the user moves the lower body to maintain balance according to the swing of the seat back and forth, left and right, and at the same time, the upper body moves while pulling the elastic band by hand. You will be able to train. The elastic band is different from the reins for riding in that it has a large stretchability.
Utility Model Registration No. 312378

  In the exercise apparatus provided with the elastic band as described above, the deterioration of the elastic band cannot be avoided, and there is a demand to improve safety by urging replacement before cutting due to the deterioration.

  The present invention has been made to meet the above-described demand, and provides an elastic band in an exercise device that can promote replacement before the elastic band is cut due to deterioration, thereby improving safety. It is the purpose.

  In order to solve the above problems, the present invention provides an elastic band in an exercise device for a user to exercise by applying a force against an elastic force, and the elastic band is cut into the elastic band. The present invention provides an elastic band in an exercise device, wherein a predictable cutting prediction portion is formed.

  As in claim 2, in claim 1, it is preferable that the cutting prediction portion is a portion where a plurality of elastic bands are bundled and at least one of them is cut.

  As in claim 3, in claim 1, the cutting prediction part is a slit formed in an elastic band, wherein the elastic band is separated into a plurality of parts, and at least one part thereof is cut. preferable.

  As in claim 4, in claim 1, the elastic band is formed by coating a material that is resistant to elongation and a material that is vulnerable to elongation, and the cutting prediction portion is a portion where a material that is weak in elongation is cut. It is preferable that

  As in claim 5, in any one of claims 1 to 4, it is preferable that a cutting inducing part is formed in the cutting prediction part.

  As in a sixth aspect, in the first aspect, the cutting prediction portion is preferably a portion where a space between a plurality of scales formed on the elastic band extends to a predetermined value or more.

  As in claim 7, the exercise device according to any one of claims 1 to 6, wherein the exercise device supports a seat portion on which a user is seated, a drive portion that swings and moves the seat portion, and the drive portion. Preferably, the elastic band is such that a user who is seated on the seat grips the tip by hand.

  According to the present invention, by forming a cutting prediction portion that can predict the cutting of the elastic band, it is possible to prompt the user to replace the elastic band before cutting due to deterioration by looking at the cutting prediction portion. So safety will be improved.

  According to claim 2, as a cutting prediction part, if a plurality of elastic bands are bundled and at least one of them is cut, it is not necessary to previously form a cutting prediction part in the elastic band. Cost is low.

  According to the third aspect, if the elastic band is separated into a plurality of parts by the slit as the cutting prediction part and at least one part of the elastic band is cut, the slit may be formed as the cutting prediction part. It's cheap.

  According to the fourth aspect of the present invention, if an elastic band formed by coating a material that is strong to elongation and a material that is weak to elongation is used, and the cutting prediction part is a portion where a material that is weak to elongation is cut, it is necessary to form a slit or the like. Because there is no, there is no sense of strangeness in the elastic band.

  According to the fifth aspect, if the cutting inducing part is formed in the cutting predicting part, the elastic band is surely cut by this cutting inducing part, so that it can be safely cut even during use.

  According to claim 6, if the elastic band is formed with a plurality of scales, and the cutting prediction portion is a portion where the interval between the scales is extended to a predetermined value or more, the cutting may be formed as a cutting prediction portion. Cost is low.

  According to the seventh aspect, by using the elastic band in the swing type exercise device, the lower body muscle of the user can be trained with the swing type exercise device, and at the same time the upper body muscle of the user can be trained with the elastic band. it can.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.

  FIG. 5 is a side view showing the overall configuration of the oscillating motion apparatus 1 according to the embodiment of the present invention. The swing type exercise device 1 includes a seat portion 2 in which a user is seated (sitting) in a shape simulating a horse's saddle. Further, a driving device 3 is provided in the seat portion 2 and is a driving means for swinging the seat portion 2, and a leg portion 30 that supports the seat portion 2 and the driving device 3.

  6 is an enlarged side view showing the driving device 3, FIG. 7 is a plan view thereof, and FIG. 8 is a rear view thereof. 5, 6, and 8, the state in which the driving device 3 swings is indicated by a virtual line.

  A pedestal 4 to which the seat portion 2 is attached is supported by a movable gantry 6 so as to be able to swing back and forth via a pair of connecting links 5, and the movable gantry 6 is supported by a base 8 so as to be able to swing left and right. In addition, a drive unit 13 is accommodated between the base 4 and the movable mount 6.

  The connecting link 5 includes a front link 5a and a rear link 5b. The upper end portion of the front link 5a is fitted to the upper shaft pin 4a provided at the front end portion of the base 4, and the lower end portion of the front link 5a is fitted to the lower shaft pin 7a provided at the front end portion of the side plate 16 of the movable frame 6. Are combined. The upper end portion of the rear link 5b is fitted to the upper shaft pin 4b provided at the rear end portion of the base 4, and the lower end portion of the rear link 5b is the lower shaft pin provided at the rear end portion of the side plate 16 of the movable frame 6. 7b.

  The front and rear lower shaft pins 7a and 7b constitute a left and right shaft 7 that supports the connecting link 5 so as to be rotatable about the axis in the left and right direction Y, whereby the pedestal 4 is moved around the left and right shaft 7 in FIG. The reciprocating rotation is possible in the front-rear direction indicated by the arrow M.

  At both ends of the base 8 in the front-rear direction X, as shown in FIG. 6 and FIG. At both ends in the front-rear direction X of the movable mount 6, connecting plates 25 facing the shaft support plate 24 are respectively provided downward, and the connection plate 25 is connected to the shaft support plate 24 so as to be rotatable by the front and rear shafts 9. Has been.

  The front and rear shafts 9 are arranged at two positions in the front and rear of the center portion of the base 8 to support the movable mount 6 so as to be rotatable about the front and rear shafts 9. A reciprocating rotation is possible in the left-right direction indicated by N.

  On the other hand, the drive unit 13 includes a single motor 10. Further, the rotational force of the output rotating shaft 12 of the motor 10 is converted into the reciprocating linear movement of the pedestal 4 in the front-rear direction X, the rotational reciprocating movement around the left and right axis 7, and the rotational reciprocating movement around the front and rear axis 9, respectively. Are provided with two drive parts 13a and 13b that enable the seat part 2 to be driven. The motor 10 of this example is placed vertically on the base 8, and the protruding direction of the output rotating shaft 12 is upward.

  The first drive unit 13a is for reciprocating linear movement in the front-rear direction X and rotational reciprocation about the left and right axis 7, and the second drive unit 13b is for reciprocating rotation about the front-rear axis 9.

  As shown in FIGS. 6 and 7, the first drive unit 13 a includes a first shaft 17 that is coupled to the output rotation shaft 12 via the motor gear 11 and the first gear 14. Also, an eccentric crank 19 that is eccentrically connected to one end of the first shaft 17, and an arm link that is connected to the shaft pin 5c provided at one end of the first shaft 17 and connected to the eccentric crank 19 at the other end. 20.

  Both ends of the first shaft 17 are rotatably supported on the pedestal 4 side, and the eccentric crank 19 performs an eccentric circular motion with respect to the first shaft 17. As a result, the front link 5a reciprocates in the front-rear direction X via the arm link 20, and the pedestal 4 connected to the connection link 5, that is, the seat 2 swings in the direction indicated by the arrow M in FIGS. It is possible.

  Further, as shown in FIGS. 7 and 8, the second drive unit 13 b includes a second shaft 18 connected via the interlocking gear 22 of the first shaft 17 and the second gear 15. Further, an eccentric rod 21 having one end portion eccentrically connected to one end portion of the second shaft 18 and the other end portion rotatably connected to the base 8 is provided. Both ends of the second shaft 18 are rotatably supported on the pedestal 4 side.

  The eccentric rod 21 is disposed on either the left side or the right side of the pedestal 4 (right side in FIGS. 7 and 8), and the upper end portion 21a of the eccentric rod 21 is connected to one end of the second shaft 18 by the shaft pin 29 shown in FIG. It is eccentrically connected to the part. A lower end portion 21 b of the eccentric rod 21 is rotatably connected to an L-shaped metal fitting 27 fixed to the base 8 by a shaft pin 28. Therefore, the rotation of the second shaft 18 causes the upper end portion of the eccentric rod 21 to perform an eccentric circular motion, so that the pedestal 4, that is, the seat portion 2 rotates around the front-rear axis 9 as indicated by an arrow N in FIG. It is movable.

  In the above configuration, when the output rotation shaft 12 of the motor 10 rotates, the first shaft 17 rotates due to the meshing of the motor gear 11 and the first gear 14, and at the same time, the interlocking gear 22 of the first shaft 17 and the second gear 15. The second shaft 18 is rotated by the meshing.

  When the first shaft 17 rotates, the eccentric crank 19 connected to one end of the first shaft 17 performs an eccentric circular motion, and the front link 5a via the arm link 20 moves in the front-rear direction X about the front left and right shafts 7a. To turn. At this time, since the rear link 5b cooperates and rotates around the rear left and right axis 7b, the pedestal 4, that is, the seat portion 2, reciprocates and swings in the front-rear direction X.

  Further, the upper end portion of the eccentric rod 21 performs an eccentric circular motion by the rotation of the second shaft 18, and the pedestal 4, that is, the seat portion 2 rotates and reciprocates around the longitudinal axis 9.

  In this way, with the user 100 seated (sitting) on the seat 2, the seat 2 moves in the front-rear direction X, the left-right direction Y, the up-down direction Z, and the θX direction and the θY direction shown in FIG. Since the swinging in the θZ direction is performed, it is possible to train the body balance function and motor function.

  As shown in FIG. 1, the rocking exercise device 1 is provided with elastic bands 50 at the left and right positions that allow the user 100 seated on the seat 2 to grip the tip 50 a with left and right hands, respectively. The base end portion 50b of the elastic band 50 is locked by a locking portion 55 of the seat portion 2 (a swinging fulcrum of the elastic band 50).

  As shown in detail in FIGS. 2 and 3, the elastic band 50 is made of a stretchable rubber material or plastic material. The base end portion 50b of the elastic band 50 is formed in a ring shape with a thick wall, and a locking hole 50c is formed in the center portion.

  The distal end 50d of the elastic band 50 is folded back in a U shape in the direction of the base end 50b and inserted into the length adjustment adjuster (belt stopper) 51 in front of the base end 50b. Not to be held. The adjuster 51 is used for a shoulder belt such as a bag.

  A flexible grip 52 is movably fitted in the distal end portion 50a of the elastic band 50.

  In addition to the function of holding the distal end 50d of the elastic band 50, the adjuster 51 adjusts the overall length L1 of the elastic band 50 to a shorter length when shifted to the base end 50b side as shown in FIG. As shown in FIG. 3 (b), when the end portion 50a is shifted to the side, the entire length L2 of the elastic band 50 can be adjusted longer.

  As shown in detail in FIG. 4, the locking portion 55 has a bolt 57 inserted through the through hole 56 a of the seat base 56 located on the side surface in the seat portion 2 from the inside toward the outside. . A hook-shaped plate 58 through which the bolt 57 is inserted is applied to the outer surface of the seat base 56.

  A hook-like nut 59 is fitted into the hook-like plate 58 from the outside of the seat portion 2 and screwed into a bolt 57 so that the hook-like plate 58 is interposed between the seat base 56 and the knob-like nut 59. It is sandwiched and held. At the same time, the knob nut 59 is also held by the bolt 57 and protrudes laterally from the seat portion 2. The flange plate 58 is protruded slightly outward from the trim 2a of the seat 2 (see t), so that the elastic band 50 does not rub the trim 2a of the seat 2. is there.

  The knob-like nut 59 is engaged with the locking portion 55 so as to be rotatable by fitting the locking hole 50c of the base end portion 50b of the elastic band 50 in the diametrical direction while expanding.

  The locking portions 55 are respectively provided on the left and right side surfaces of the seat portion 2, and the elastic bands 50 are provided on the left and right sides of the seat portion 2.

  As shown in FIG. 1, the locking portion 55 is located on the left and right side surfaces of the seat portion 2 and is located on the rear side of the thigh portion 101 of the seated user 100. Specifically, the seated user 100 is positioned on the rear side of the tilted portion of the thigh 101. “Aori” is a portion of the seat portion 2 that the user 100 sandwiches between the crotch. In addition, the locking portion 55 is positioned in the vicinity of a perpendicular passing through the center of gravity G of the seated user 100.

  In the swing type exercise device 1 provided with such an elastic band 50, the user 100 moves the lower body so as to maintain a balance according to the swinging of the seat portion 2 in the front-rear and left-right directions. At the same time, the upper body moves while pulling the elastic band 50 that grasps the grip 52 of the tip 50a, so that the muscles of the upper body can also be trained.

  The elastic band 50 is for the user 100 to move by applying force against the elastic force. Deterioration of the elastic band 50 cannot be avoided, and prompts replacement before cutting due to deterioration. There is a desire to improve safety.

  Therefore, a cutting prediction portion 54 (see FIG. 11C) that can predict the cutting of the elastic band 50 can be formed in the elastic band 50.

  In this way, by forming the cutting prediction portion 54 that can predict the cutting of the elastic band 50, the user 100 is prompted to replace the elastic band 50 before cutting due to deterioration by viewing the cutting prediction portion 54. Can improve safety.

  FIG. 11 shows an elastic band 50-1 according to the first embodiment. This elastic band 50-1 is a bundle of a plurality of (two in this example) elastic bands 50A and 50B (multiple). The elastic bands 50A and 50B are drawn extremely shorter than FIG. 1 and the like for the convenience of drawing (the same applies to FIG. 12 and subsequent figures).

  The base end portions 50b (there are four places) of the elastic bands 50A and 50B are locked to the above-described locking portions 55 in a state where they are overlapped in the thickness direction.

  The cut prediction part 54 of the elastic band 50-1 is a place where at least one of the plurality of elastic bands 50A and 50B is cut as shown in FIG. That is, when the elastic band 50-1 deteriorates and the entire length L3 of FIG. 11A extends as the entire length L4 of FIG. 11B, a plurality of elastic members are formed as shown in FIG. It is unlikely that all of the bands 50A and 50B are cut at the same time, and one elastic band 50A is cut and the other elastic band 50B remains without being cut.

  As described above, when the cutting prediction portion 54 is a portion where at least one of the plurality of elastic bands 50A, 50B is cut, the user can see the elastic band 50− by looking at the cutting prediction portion 54. Replacement can be urged before 1 breaks due to degradation.

  Moreover, in the elastic band 50-1 of 1st Embodiment, since it is not necessary to form the cutting | disconnection prediction part 54 previously in elastic band 50A, 50B, it is cheap.

  FIG. 12 shows an elastic band 50-2 according to the second embodiment. The elastic band 50-2 includes a plurality of (two in this example) slits over almost the entire length of one elastic band 50-2. 50e is formed, and the elastic band 50-2 is separated into a plurality of portions 50f (three portions in this example). The base end part 50b (there are two places) of the elastic band 50-2 is locked to the above-described locking part 55 in a state of being overlapped in the thickness direction.

  The cut prediction part 54 of the elastic band 50-2 is a place where at least one of the plurality of parts 50f is cut as shown in FIG. That is, as in the first embodiment, when the elastic band 50-2 is deteriorated and stretched, as shown in FIG. It is difficult to think, and the part 50f is cut and the other part 50f remains without being cut.

  In this way, as the cutting prediction portion 54, if the elastic band 50-2 is separated into a plurality of portions 50f by the slit 50e and at least one portion thereof is cut, the cutting prediction portion 54 is viewed. Thus, it is possible to prompt the user 100 to replace the elastic band 50-2 before it is cut due to deterioration.

  Moreover, in the elastic band 50-2 of 2nd Embodiment, since the slit 50e should just be formed as the cutting | disconnection prediction part 54, it is cheap.

  FIG. 13 shows an elastic band 50-3 according to the third embodiment. The elastic band 50-3 is formed by coating an elastic band 50D made of a material resistant to elongation with an elastic band 50E made of a material weak to elongation. The base end portions 50b (there are two places) of the elastic bands 50D and 50E are locked to the above-described locking portion 55 in a state where they are overlapped in the thickness direction.

  As a material resistant to elongation (high tensile strength and durability), for example, in the blending of rubber, a polymer, a reinforcing material, a crosslinking material, a vulcanization accelerator, and other weight ratios of 77, 10, 3, 3, As a material that is strong to elongation (high tensile strength and durability), the polymer, the reinforcing material, the cross-linking material, the vulcanization accelerator, and other weight ratios are 82, 6, 3, 3, and 6. . A material that is resistant to elongation has a higher blending ratio of a reinforcing material (a component that greatly affects tensile strength and durability, for example, carbon black) in the rubber compounding than a material that is weak against elongation.

  The cut prediction part 54 of the elastic band 50-3 is a portion where an elastic band 50E made of a material weak to elongation is cut as shown in FIG. That is, as in the first embodiment, when the elastic band 50-3 is deteriorated and stretched, as shown in FIG. 13C, the elastic band 50E made of a material that is weak to stretch is cut first and stretched. The strong elastic band 50D remains without being cut.

  As described above, the elastic band 50E formed by covering the elastic band 50D made of a material resistant to elongation and the elastic band 50E made of a material weak against elongation is used as the cutting prediction unit 54, and the elastic band 50E made of a material weak against elongation is cut. In this case, by looking at the cutting prediction unit 54, it is possible to prompt the user 100 to replace the elastic band 50-3 before it is cut due to deterioration.

  Moreover, in the elastic band 50-3 of 3rd Embodiment, since it is not necessary to form a slit etc., an uncomfortable feeling is lost in the elastic band 50-3.

  FIG. 14 shows an elastic band 50-4 of the fourth embodiment. This elastic band 50-4 forms a single slit 50e over almost the entire length of the single elastic band 50-4, and is elastic. The band 50-4 is separated into a plurality of portions 50f (two portions in this example). The base end part 50b (there are two places) of the elastic band 50-4 is locked to the above-described locking part 55 in a state of being overlapped in the thickness direction.

  In the elastic band 50-4, a cutting inducing portion 54a that is a V-shaped cut is formed in the cutting prediction portion 54.

  In this way, if the cutting inducing part 54a is formed in the cutting predicting part 54, the elastic band 50-4 is surely cut by the cutting inducing part 54a, so that it can be safely cut even during use. .

  In addition, the cutting | disconnection induction | guidance | derivation part 54a can also be formed also in the cutting | disconnection prediction part 54 of 1st-3rd embodiment.

  FIG. 15 shows an elastic band 50-5 according to the fifth embodiment, and this elastic band 50-5 has a plurality of scales as the cutting prediction portion 54 over almost the entire length of one elastic band 50-5. 50 g is formed at regular intervals. The base end part 50b (there are two places) of the elastic band 50-5 is locked to the above-described locking part 55 in a state of being overlapped in the thickness direction.

  As described above, as the cutting prediction portion 54, a plurality of scales 50g are formed on the elastic band 50-5, and the space between the scales 50g is measured with the scale 60, and the space between the scales 50g extends to a predetermined value or more. In this case, the scale 50g may be formed as the cutting prediction unit 54, so that the cost is low.

  The elastic bands 50-1 to 50-5 of the above embodiment are locked to the aforementioned locking portion 55 in a state where 2 to 4 base end portions 50b are overlapped in the thickness direction. The prediction unit 54 can also be applied to the elastic band 50 as shown in FIG.

  In the embodiment, the base end portion 50b of the elastic bands 50-1 to 50-5 is locked by the locking portion 55 of the seat portion 2, but the elastic band 50 is used as shown in FIG. It can also be applied to a structure in which the base end portion 50b of -1 to 50-5 is locked by the locking portion 33a of the leg portion 30.

  The above embodiment is premised on the elastic bands 50-1 to 50-5 of the oscillating motion apparatus. However, as shown in FIG. 10 (b), the elastic band 50-1 of the exercise device that the user 100 rides on the turntable 62b installed on the leg 62a and moves to twist the upper body and the lower body. 50-5 can also be applied. The elastic bands 50-1 to 50-5 are configured such that the base end portion 50b is locked by the locking portion 62c of the leg portion 62a, and the grip 52 at the distal end portion is gripped by a hand. In addition, it can apply widely as the elastic bands 50-1 to 50-5 in the exercise device for the user 100 to exercise by applying force against the elastic force.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a swing type exercise device according to the present invention, in which (a) is a side view on which a user is seated and (b) is a perspective view. It is an elastic band, (a) is a side view, (b) is a plane sectional view. It is an elastic band, (a) is the top view which adjusted the full length short, (b) is the top view which adjusted the full length long. It is sectional drawing of a latching | locking part. It is a side view which shows the whole structure of the rocking | fluctuation type exercise device which concerns on this invention. It is a side view which expands and shows the drive device of FIG. FIG. 7 is a plan view of FIG. 6. FIG. 7 is a rear view of FIG. 6. It is a figure for demonstrating the motion of a seat part. (A) is the side view in which the user sat on the rocking | fluctuation type exercise device which concerns on this invention, (b) is a perspective view of another exercise device. It is an elastic band of a 1st embodiment, (a) is a perspective view before extending, (b) is a perspective view after extending, (c) is a perspective view after cutting. It is an elastic band of 2nd Embodiment, (a) is a perspective view before cut | disconnecting, (b) is a perspective view after cut | disconnecting. It is an elastic band of 3rd Embodiment, (a) is a perspective view before cut | disconnecting, (b) is a principal part cross-sectional perspective view, (c) is a perspective view after cut | disconnecting. It is an elastic band of 4th Embodiment, (a) is a perspective view before cut | disconnecting, (b) is a perspective view after cut | disconnecting. It is an elastic band of 5th Embodiment, (a) is a perspective view before extending, (b) is a perspective view after extending.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Swing type exercise device 2 Seat part 3 Drive device (drive part)
30 Leg part 50-1 to 50-5 Elastic band 50a Tip part 50b Base end part 52 Grip 54 Cutting prediction part 55 Locking part 100 User

Claims (7)

An elastic band in an exercise device for a user to exercise by applying force against elastic force,
An elastic band in an exercise device, wherein the elastic band is formed with a cutting prediction portion capable of predicting the cutting of the elastic band.   The elastic band in the exercise device according to claim 1, wherein the cutting prediction unit is a portion where a plurality of elastic bands are bundled and at least one of them is cut.   The exercise device according to claim 1, wherein the cutting prediction part is a slit formed in an elastic band, wherein the elastic band is separated into a plurality of parts, and at least one part thereof is cut. Elastic band.   2. The elastic band according to claim 1, wherein the elastic band is formed by coating a material that is resistant to elongation and a material that is weak against elongation, and the cutting prediction portion is a portion where a material that is weak against elongation is cut. Elastic band in the exercise device.   The elastic band in the exercise device according to any one of claims 1 to 4, wherein a cutting induction part is formed in the cutting prediction part.   The elastic band in the exercise device according to claim 1, wherein the cutting prediction portion is a portion where a space between a plurality of scales formed on the elastic band extends to a predetermined value or more.   The exercise device is an oscillating type exercise device including a seat portion on which a user is seated, a drive portion that oscillates the seat portion, and a leg portion that supports the drive portion. The elastic band in the exercise device according to any one of claims 1 to 6, wherein a user seated on the seat portion grips the tip portion by hand.

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