JP2015128561A - Training apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a training apparatus, despite weight saving, preventing bending deformation in use by providing it with excellent support strength.SOLUTION: A body 1 of a training apparatus T comprises a first support part 2, and a second support part 3 branched from a length-directional halfway portion of the first support part 2. Pedals 11 are rotatably fitted to the branch portion of the second support part 3 in the body 1. A section from an installation end S1 of the first support part 2 to an installation end S2 of the second support part 3 has an arch shape formed by a curved face formed by continuation of the lower face of the body 1. When the pedals 11 are stepped, component force in the direction of depressing is acted on a rotary shaft 12. Stress produced in the body by the depressing force can be substantially uniformly distributed in a range from the installation end S1 of the first support part 2 to the installation end S2 of the second support part 3, so as to effectively suppress deformation of the training apparatus T.

Description

  The present invention relates to a training apparatus.

  Conventionally, a plurality of types of training devices for enhancing leg strength have been developed, and one of them is disclosed in Patent Document 1 below. This has a main frame extending in the front-rear direction and having an inverted V shape with respect to the user, and a pair of leg frames provided so as to protrude in the left-right direction at both ends of the main frame. ing. Both leg frames are foldably connected to both lower ends of the main frame. A rotation shaft is provided along the left-right direction at the apex of the inverted V-shape in the main frame. The rotating shaft is provided with a pedal that can rotate around the rotating shaft. A resistance unit is incorporated in the rotating shaft portion so that a desired resistance is applied during rotation.

  The training device is used by installing a training device in front of a user and stroking a pedal while sitting on a chair.

Utility Model Registration No. 3172719

  When the user is stroking the pedal, a component force in the push-down direction acts on the rotating shaft. In that case, in the above-described conventional training apparatus, the shape of the main frame that receives the pressing force is triangular (inverted V-shaped), and therefore the pressing force acts intensively on the apex of the main frame. Therefore, in order to increase the support strength of the apex portion, it is necessary to take measures such as using a highly rigid support material that is thickened.

  However, if such measures are taken, there is a problem that the training apparatus increases in weight and lacks portability.

  The present invention has been completed based on the above circumstances, and an object of the present invention is to provide a training apparatus that is lightweight and excellent in support strength.

  The training device according to the present invention extends substantially along the front-rear direction with respect to the user, inclines substantially obliquely upward in a direction away from the user, and the end near the user contacts the floor surface. One support portion, a crank-like operation tool that projects from both side surfaces of the first support portion in the width direction and is rotated around the rotation axis by the user, and one end side is continuously provided above the first support portion. In addition, the first support portion includes a second support portion that extends obliquely downward toward the installation surface while being away from the user from the one end side, and the other end side is in contact with the installation surface. In the side view orthogonal, the lower surface shape from the installation end of the first support portion to the installation end of the second support portion is an arch formed by a continuous curved surface.

  According to the present invention, when the user uses the operation tool, a component force in the push-down direction acts on the rotation shaft. This pushing down component force is supported when the installation end portions of the first support portion and the second support portion are in contact with the installation surface. In this case, since the bottom surface shape from the installation end of the first support part to the installation end of the second support part forms a continuous arch-shaped curved surface, stress is applied to the first support part. It can disperse | distribute substantially uniformly from an installation end part to the installation end part of a 2nd support part. Therefore, deformation of the training device can be effectively suppressed. For this reason, it is not always necessary to select a high-rigidity material that leads to an increase in weight, such as increasing the thickness of the support portion, which can contribute to weight reduction of the training apparatus.

It is a side view which shows the training apparatus of Example 1. FIG. 1 is a plan view showing a training device of Example 1. FIG. FIG. 3 is an enlarged cross-sectional view illustrating a periphery of a rotation shaft of the operation tool of the first embodiment. It is a side view which shows the training apparatus of Example 2. FIG. It is a disassembled perspective view which shows the load adjustment mechanism of Example 2. FIG. It is sectional drawing which shows the load part of the load adjustment mechanism of Example 2. FIG. It is a perspective view which shows the flame | frame of Example 2. FIG. FIG. 6 is an exploded perspective view showing a first bearing member of Example 2. FIG. 6 is a side view showing a first member of a first bearing member of Example 2. FIG. 6 is an exploded perspective view showing a second bearing member of Example 2. 6 is a side view showing a second member of a second bearing member of Embodiment 2. FIG. It is a perspective view which shows the anti-skid tool attached to the leg body of Example 2. It is a bottom view of the antiskid tool of Example 2. It is sectional drawing which shows the anti-skid tool attached to the leg body of Example 2.

A preferred embodiment of the present invention will be described.
(1) It is preferable that the training apparatus of the present invention has a configuration in which the one end side of the second support portion is located at a position in the middle of the length direction of the first support portion.
According to such a configuration, the deformation of the training apparatus can be suppressed even if the rigidity of the entire training apparatus is lowered compared to the case where the second support part is supported by the end of the first support part.
(2) A top plate may be attached to the upper surface of the first support portion along the longitudinal direction.
According to such a configuration, the strength of the first support portion can be improved by attaching the top plate to the upper surface.

  Next, Embodiments 1 and 2 embodying the training apparatus of the present invention will be described with reference to the drawings.

<Example 1>
The training device T according to the first embodiment is mainly used for the purpose of enhancing leg strength. In use, the user sits on a relatively low chair and the training device T is installed in front of it. At the time of installation, the training apparatus T has the left end portion shown in FIG. 1 facing the user toward the front side (hereinafter referred to as the rear side) and the right end portion illustrated in FIG. Directed to. In this state, the user trains the operation tool 11 with his / her feet. Hereinafter, a specific configuration of the training apparatus T according to the first embodiment will be described.

  The training device T has a main body 1 made of synthetic resin. As shown in FIG. 3, the main body 1 is formed in a hollow shape. The main body 1 includes a first support part 2 and a second support part 3, and the entire body 1 is supported by the two support parts 2 and 3 at two front and rear positions. As shown in FIG. 1, the first support portion 2 is formed with a gentle upward slope from the rear end portion 2A of the main body 1 to the front end portion 2B. The second support portion 3 is branched from a midway portion of the first support portion 2 near the front end 2B, and is formed to extend obliquely downward toward the front.

  As shown in FIG. 1, the angle (θ1) formed by the axis c1 related to the extending direction of the first support portion 2 with the installation surface is the angle (θ2) formed by the axis c2 related to the extending direction of the second support portion 3 and the installation surface. ) To be smaller (θ1 <θ2).

  As shown in FIG. 2, a pair of rear legs 4 are formed on the installation end S1 of the first support portion 2 so as to project in the width direction. A pair of front legs 5 are formed on the installation end S2 of the second support portion 3 so as to protrude in the width direction. These front and rear legs 4 and 5 can reliably restrict the training device T from falling down in the width direction. As shown in FIG. 3, a mounting frame 6 that opens toward the installation surface is formed on the back surface of the installation end S <b> 2 of the second support unit 3. A slip stopper 7 is fitted in the mounting frame 6 and is attached to the ceiling surface 6A of the mounting frame 6 by screwing. Note that the anti-skid tool 7 is also attached to the installation end S1 of the first support portion 2 in the same manner as described above.

  As shown in FIG. 2, the top plate 8 is attached to the upper surface of the main body 1 (first support portion 2) over almost the entire region. As shown in FIG. 3, a mounting frame 9 that opens upward is formed on the entire top surface of the first support portion 2. The top plate 8 is fitted inside the mounting frame 9 and is attached in a state in which a locking edge 8A formed along the periphery of the lower surface of the top plate 8 is locked to the upper edge of the mounting frame 9. ing. In this way, the top plate 8 is fitted and mounted on the upper surface of the main body 1 so that the upper surface of the first support portion 2 is closed and the main body 1 is reinforced.

  As shown in FIG. 1, the top plate 8 is formed in a shape that follows the curved shape of the upper surface of the first support portion 2. Specifically, regarding the curved shape of the upper surface of the first support portion 2 and the top plate 8 in the side view shown in FIG. 1, the rear region from the rear end portion 2A to the position slightly ahead of the center portion is In addition, it has a gentle arc shape that protrudes downward, and the front region that follows this has a gentle arc shape that protrudes upward. As shown in FIG. 2, on the top surface of the top plate 8, the display unit 10 is incorporated in the inflection region (the region where the curved direction of the curved surface changes) between the rear region and the front region described above. The display unit 10 is configured by a liquid crystal panel, for example, and displays numerical values such as the usage time of the training device T, the virtual travel distance, and calories consumed by training. In the display unit 10, the display surface faces obliquely upward and rearward, and is in a direction substantially facing the user's line of sight.

  As shown in FIGS. 1 and 2, the training apparatus T includes an operation tool 11. The operation tool 11 includes a rotating shaft 12, a pair of arm portions 11A, and a pair of pedal portions 11B. The rotating shaft 12 penetrates the first support portion 2 in the width direction. Each arm portion 11 </ b> A extends in the opposite direction continuously to both end portions of the rotating shaft 12. That is, each arm portion 11A rotates around the rotation shaft 12 with a 180 degree interval. Each arm portion 11A has a pedal portion 11B rotatably attached to the tip portion. Thus, the operation tool 11 has a crank shape. In addition, the pair of pedals 11 </ b> B are disposed on both sides of the first support portion 2 in the width direction so as to be rotatable around the rotation shaft 12. Each pedal 11B is provided with a resin footrest 22 having a loop shape. Both ends of the footrest 22 are connected to both ends of each pedal 11B in the width direction. The footrest 22 plays a role of regulating the disengagement of the foot from the operation unit 11B by inserting the user's foot inside thereof.

  As shown in FIG. 3, the main body 1 incorporates a load adjustment mechanism L for adjusting the magnitude of the load when the operation tool 11 is rotated. The load adjustment mechanism L has a friction wheel 13 that is coaxially fixed to the rotary shaft 12. The main body 1 is adjacent to the front side of the friction wheel 13 and has an adjustment shaft 14 disposed therein. The adjustment shaft 14 is constituted by a screw shaft, and is supported by a support member 20 disposed in the main body 1 so as to be substantially vertically oriented and rotatable around an axis.

  The main body 1 is provided with an adjustment dial 15 adjacent to the front side of the adjustment shaft 14. The adjustment dial 15 has a support shaft 15 </ b> B extending obliquely downward at the center of the lower surface of the operation panel 15 </ b> A formed in a disk shape and is rotatably supported in the main body 1. As shown in FIGS. 1 and 2, the operation panel 15 </ b> A has non-slip grooves (not shown in detail) formed on the peripheral surface at regular intervals, and a part of the operation panel 15 </ b> A is one of the first support portions 2. It protrudes outside from the side surface (right side surface in FIG. 2) and can be rotated.

  As shown in FIG. 3, the support shaft 15 </ b> B has the first gear 16 fitted on the upper end portion thereof and meshed with the second gear 17 fitted on the upper end portion of the adjustment shaft 14. The adjusting shaft 14 is screwed in a state where the movable cylinder 18 is prevented from rotating at the lower part. As a result, when the adjustment dial 15 is rotated, the adjustment shaft 14 rotates through the meshing of the first and second gears 16 and 17, and the movable cylinder 18 moves up and down along the adjustment shaft 14. be able to. As shown in FIG. 3, a friction belt 13 has a load belt 19 laid around a circumferential surface. One end of the load belt 19 is bound to the wall surface in the main body 1, and the other end is bound to the side surface of the movable cylinder 18.

  As shown in FIG. 1, in a side view of the training apparatus, a continuous arc surface is formed on the lower surface of the main body 1 from the installation end S <b> 1 of the first support 2 to the installation end S <b> 2 of the second support 3. An arch-shaped stress dispersion portion 21 is formed. As described above, the shape of the stress distribution portion 21 is that the inclination angle (θ1) of the first support portion 2 is smaller than the inclination angle (θ2) on the second support portion 3 side. The curvature is slightly smaller on the first support portion 2 side. As shown in FIG. 1, the apex of the stress dispersion portion 21 is a portion where the second support portion 3 is substantially branched from the first support portion 2, and is a portion that is almost immediately below the rotation shaft 12.

  Next, the effect of Example 1 comprised as mentioned above is demonstrated. When using the training device T according to the first embodiment, the training device T is installed in front of the user, and the left side end shown in FIG. 1 is directed toward the user so that the whole is along the front-rear direction. . While sitting on a chair, the user places each of his / her legs on the left and right pedals 11 </ b> B and rowes his / her legs. During this time, the friction wheel 13 rotates in accordance with the rotation of the rotary shaft 12. However, since the load belt 19 is pressed against the friction wheel 13, it is generated between the load belt 19 and the friction wheel 13 by the user. A predetermined load is applied due to the friction force.

  By the way, while the operating tool 11 is being stepped on, a component force in the push-down direction acts on the rotary shaft 12. As described above, since the arch shape is continuous from the installation end S1 of the first support portion 2 of the main body 1 to the installation end portion S2 of the second support portion 3, the component force in the push-down direction is the main body 1. Is converted into a compression force and transmitted to the installation end S1 of the first support portion 2 and the installation end S2 of the second support portion 3. This compressive stress is uniformly generated over the installation end S1 of the first support part 2 and the installation end S2 of the second support part 3. For this reason, bending deformation hardly occurs in the main body 1. This means that bending deformation can be suppressed with a smaller cross-sectional area of the main body 1, and thus the main body 1 is made thinner and contributes to overall weight reduction. This light weight effect is very significant for a portable training apparatus such as the present embodiment.

  Further, when adjusting the rotational load of the operation tool 11, the adjustment dial 15 is rotated in any desired direction. Then, the adjustment shaft 14 rotates through the meshing of the first and second gears 16 and 17, and the movable cylinder 18 moves up and down along the adjustment shaft 14. Thereby, the pressure contact range of the load belt 19 with respect to the circumferential surface of the friction wheel 13 is increased or decreased, and the frictional force between the two is adjusted in magnitude. Thus, the magnitude of the load when rotating the operation tool 11 can be adjusted.

  In the training apparatus T according to the first embodiment, the following effects are also exhibited. That is, since the top plate 8 is attached to the upper surface of the main body 1, the bending strength of the main body 1 can be improved.

  Further, since the second support part 3 is branched from the middle in the length direction of the first support part 2, even if the rigidity of the entire training apparatus T is lowered as compared with the case where the second support part 3 is branched from the end part, the training is performed. The deformation of the device T can be suppressed.

<Example 2>
As shown in FIGS. 4 and 5, the training apparatus T <b> 1 of the second embodiment is different from the first embodiment in the form of the rotating shaft 112, the configuration of the load adjusting mechanism L <b> 1, the form of the anti-slip tool 107, and the like. The same configurations as those of the first embodiment are denoted by the same reference numerals and detailed description thereof is omitted.

  The training apparatus T1 is formed in a hollow shape by dividing the main body 101 into right and left parts and joining a right main body 101R and a left main body (not shown). The training device T <b> 1 includes a battery storage unit 102 that stores a battery (not shown) in the first support unit 2. The battery housing part 102 has a lid member 102 </ b> A that opens and closes continuously to the lower surface of the first support part 2. The battery supplies power to a display device that displays various information (virtual mileage, calorie consumption, etc.) on the display unit 10.

  In the training device T1, the rotating shaft 112 is welded to the outer peripheral surface at a substantially central position in the direction in which the rotating shaft 112 extends, and the outer peripheral shape is a substantially circular shape that is concentric with the rotating shaft 112, as shown in FIGS. It has a certain flat connecting part 120. The connecting portion 120 has an outer diameter that is smaller than an inner diameter of a drum member 130 described later. The connecting part 120 has four screw holes 121 provided at equal intervals on a circumference concentric with the rotating shaft 112. The connecting portion 120 has a cut hole 122 cut in the axial direction from a part of the outer periphery. The connecting portion 120 has a magnet 123 fitted in the cut hole 122. As a result, the rotating shaft 112 rotates and the magnet 123 also rotates, and the rotational speed of the rotating shaft 112 can be detected using a magnetic sensor 124 incorporated in the second bearing member 150 described later. The training device T1 can display various information on the display unit 10 by converting from the output value of the magnetic sensor 124.

  As shown in FIGS. 4 and 5, the load adjustment mechanism L <b> 1 includes a load Z, an adjustment unit Y, and a frame Z that is fixed to each component constituting the unit and attached to the main body 101. . As shown in FIGS. 5 and 6, the load portion X includes a drum member 130, a first bearing member 140, a second bearing member 150, and a load belt 160.

  As shown in FIGS. 4 to 7, the frame Z is formed by bending a flat metal plate cut into a desired shape and provided with a plurality of through holes. The frame Z includes a lower piece portion 171, left and right piece portions 172L and 172R, and a front piece portion 173. Here, front / rear / left / right / up / down indicates the front / rear / left / right / up / down direction of the main body 101 in a state in which a frame Z obtained by fixing and fixing the components constituting the load portion X and the adjustment portion Y is attached to the main body 101.

  Two lower piece portions 171 are arranged in parallel and separated from each other in the front-rear direction, and have a rectangular shape that is long in the left-right direction. The left and right piece portions 172L and 172R rise from the left and right ends of each lower piece portion 171 at a right angle. Each of the left and right piece portions 172L, 172R has a support opening 174 formed by notching from above at an opposing position. Each support opening 174 has a circular shape with an upper opening. The left and right piece portions 172L and 172R are fixed between through holes opposed to a plurality of connecting rods (not shown). The right piece 172R extends forward from the left piece 172L.

  The front piece 173 is a rectangular shape that is bent at a right angle in the left direction from the front end of the right piece 172R and is long in the vertical direction. The front piece 173 has a long hole 173A extending in the vertical direction at the center. The front piece 173 has an upper bent portion 175 bent at a right angle forward from the upper and lower ends, and a lower bent portion 176. The upper bent portion 175 has a through-hole 175 </ b> A penetrating in the left and right central portions. The lower bent portion 176 has a first through hole 176A penetrating at a position facing the through hole 175A of the upper bent portion 175. The lower bent portion 176 has a second through-hole 176B that is provided side by side with the first through-hole 176A.

  The right piece 172R has a bent portion 177 bent at a right angle in the left direction from the lower end of the portion extending forward from the left piece 172L (see FIG. 4). The bent portion 177 is provided so as to be orthogonal to the tangential direction of the outer peripheral surface of the drum member 130 attached to the frame Z. The lower piece is provided with one through hole.

  As shown in FIGS. 5 and 6, the drum member 130 has a substantially cylindrical shape. The drum member 130 has a flange 131 that extends outward from the outer peripheral edges of both ends and protrudes from the outer peripheral surface of the drum member 130 lower than the thickness of the load belt 160. Further, the drum member 130 extends inward from the inner peripheral surface at a position biased toward one opening end side (left side in FIG. 6), and has an annular inner peripheral ring having an insertion hole 132A concentric with the drum member 130 at the center. Part 132. The inner peripheral ring portion 132 has four through holes 132 </ b> B provided at equal intervals on a circumference concentric with the central axis of the drum member 130. These through-holes 132B are inserted into the insertion holes 132A of the inner peripheral ring part 132 through the rotation shaft 112, and the inner peripheral ring part 132 and the connecting part 120 of the rotation shaft 112 are overlapped with each other. It is provided at a position corresponding to the hole 121. Therefore, in the drum member 130, the bolt B inserted through each connection hole 132 </ b> B provided in the inner peripheral ring portion 132 of the drum member 130 is inserted into each screw hole 121 of the rotation shaft 112 with the rotation shaft 112 inserted therein. It is connected to the rotating shaft 112 by screwing. For this reason, the drum member 130 can rotate with the rotation of the rotating shaft 112.

  As shown in FIGS. 5, 6, 8, and 9, the first bearing member 140 is configured by connecting two first members 141 having the same shape in a fitted state. The first bearing member 140 includes a first cylindrical portion 140A, a second cylindrical portion 140B, and a flange portion 140C that extends outward from a boundary portion between the first cylindrical portion 140A and the second cylindrical portion 140B. The first bearing member 140 has an inner diameter slightly larger than the outer diameter of the rotating shaft 112, and the rotating shaft 112 is inserted therethrough. The first cylindrical portion 140A of the first bearing member 140 has an outer diameter larger than the inner diameter of the insertion hole 132A of the drum member 130. The second cylindrical portion 140B of the first bearing member 140 has an outer diameter that is smaller than the diameter of the support opening 174 of the frame Z.

  The flange portion 140C of the first bearing member 140 has a circular shape whose outer periphery is concentric with the cylindrical portions 140A and 140B. The collar portion 140 </ b> C has an outer diameter smaller than the inner diameter of the drum member 130. The flange portion 140C has four through-holes 140D provided at equal intervals on a circumference concentric with the central axis. The collar portion 140C is recessed with a hexagonal shape around each through hole 140D on the side surface (the right side in FIG. 6) from which the first cylindrical portion 140A extends, and a hexagon nut is embedded therein.

  The first bearing member 140 is inserted through the rotary shaft 112, and the first cylindrical portion 140A and the flange portion 140C are accommodated in the drum member 130 from one opening (left side in FIG. 6) of the drum member 130. The first bearing member 140 is inserted into the support opening 174 provided in the right piece 172R of the frame Z through the second cylindrical portion 140B, and has four through holes 174A that penetrate the periphery of the support opening 174. Each bolt inserted (see FIG. 7) is connected to the frame Z by screwing it into a hexagon nut embedded in each through hole 140D of the flange 140C. The first bearing member 140 supports the rotating shaft 112, and the end surface of the first cylinder 140 </ b> A contacts the side surface of the inner peripheral ring portion 132 of the drum member 130, so that the drum member 130 and the rotating shaft 112 are connected to the frame Z. Movement to the right piece 172R side (leftward in FIG. 6) is restricted.

  The first member 141 includes a semi-cylindrical portion 142 constituting the first cylindrical portion 140A and the second cylindrical portion 140B of the first bearing member 140, and a semi-cylindrical portion 143 constituting the flange portion 140C of the first bearing member 140. Have. The semi-cylindrical part 142 has a shape divided into two by a plane passing through the central axes of the first cylindrical part 140A and the second cylindrical part 140B.

  As shown in FIG. 9, the first member 141 has an inner circumferential semicircular portion 144, a pair of first straight portions 145A and 145B, a first curved portion 146, a first curved portion 146, as viewed in the axial direction from the first cylindrical portion 140A side. It has an outer shape including a two-curved portion 147, a pair of second straight portions 148, and an outer peripheral semicircular portion 149. The inner peripheral semicircular portion 144 is an inner peripheral surface of the semicylindrical portion 142 and has a semicircular shape. The pair of first straight portions 145 are continuous with both ends of the inner peripheral semicircular portion 144 and have a straight shape extending in the opposite direction on the straight line passing through the central axis of the semicylindrical portion 142 in the opposite direction.

  The first curved portion 146 is continuous with the outer end portion of one of the first straight portions 145A, and protrudes outward in the radial direction with a semicircular convex portion 146A. The first curved portion 146 continues with the convex portion 146A and is radially inward. It is a substantially S shape which consists of the recessed part 146B dented in semicircle shape. The second curved portion 147 is continuous with the outer end of the other first straight portion 145B, and has a concave portion 147A that is recessed in a semicircular shape on the inner side in the radial direction. It is a substantially S-shape consisting of convex portions 147B protruding into the shape.

  Each of the second straight portions 148 is continuous with the end of the first curved portion 146 and the end of the second curved portion 147, and has the same length in the opposite direction on the straight line passing through the central axis of the semi-cylindrical portion 142. It is an extended linear shape. The outer peripheral semicircular portion 149 has a semicircular shape concentric with the inner peripheral semicircular portion 144, which connects the outer end portions of the second linear portions 148.

  The first bearing member 140 is configured by connecting the two first members 141 having such a configuration such that the first curved portion 146 and the second curved portion 147 are fitted together. For this reason, even if a load is applied to the rotating shaft 112, the first bearing member 140 does not shift the first members 141 and can rotate the rotating shaft 112 satisfactorily. Further, if the first bearing member 140 is formed in one piece, the tip end portion of the arm portion 11A formed in a flat shape is inserted and assembled, so that the inner diameter of the first bearing member 140 is increased and the rotating shaft 112 is increased. The gap between the two will increase. Therefore, by configuring the first bearing member 140 by connecting the two first members 141, the inner diameter of the first bearing member 140 can be formed slightly larger than the outer diameter of the rotating shaft 112, The first bearing member 140 can support the rotating shaft 112 satisfactorily.

  As shown in FIGS. 5, 6, 10, and 11, the second bearing member 150 is also configured by connecting two second members 151 having the same shape in a fitted state. The second bearing member 150 includes a first cylindrical portion 150A, a second cylindrical portion 150B, and a flange portion 150C that extends outward from the boundary between the first cylindrical portion 150A and the second cylindrical portion 150B. The second bearing member 150 has an inner diameter slightly larger than the outer diameter of the rotating shaft 112, and the rotating shaft 112 is inserted therethrough. The first cylindrical portion 150A of the second bearing member 150 is provided with eight ribs 150E extending radially from the outer peripheral surface at equal intervals. The first cylindrical portion 150A is formed such that the outer diameter of the portion where the rib 150E is provided is smaller than the diameter of the support opening 174 of the frame Z.

  The second cylindrical portion 150B of the second bearing member 150 is also provided with eight ribs 150F extending radially from the outer peripheral surface at equal intervals. These ribs 150F are inclined in the axial direction from the intermediate portion toward the distal end side of the second cylindrical portion 150B. The flange 150C of the second bearing member 150 has a circular shape whose outer periphery is concentric with the cylindrical portions 150A and 150B. The flange 150 </ b> C has an outer diameter smaller than the inner diameter of the drum member 130. The flange 150C has four through holes 150D provided at equal intervals on a circumference concentric with the central axis. The flange portion 150C is recessed in a hexagonal shape around each through-hole 150D on the side surface (left side in FIG. 6) on which the second cylindrical portion 150B extends, and a hexagon nut is embedded therein. The flange portion 150C has a substantially circular cut portion 150G cut inward from the outer peripheral surface between the two through holes 150D. The notch 150G is fixed by fitting the tip of the magnetic sensor 124.

  The second bearing member 150 is inserted through the rotary shaft 112, and the second cylindrical portion 150B and the flange portion 150C are accommodated in the drum member 130 from the other opening (right side in FIG. 6) of the drum member 130. The second bearing member 150 is inserted into the support opening 174 provided in the left piece 172L of the frame Z through the first cylindrical portion 150A, and has four through holes 174A penetrating around the support opening 174. Each bolt inserted (see FIG. 7) is connected to the frame Z by screwing it into a hexagon nut embedded in each through hole 150B of the flange 150C. The second shaft member 150 supports the rotating shaft 112 and the end surface of the second cylindrical portion 150B contacts the side surface of the connecting portion 120 of the rotating shaft 112 so that the drum member 130 and the rotating shaft 112 are the left piece of the frame Z. The movement to the part 172L side (the right direction in FIG. 6) is restricted.

  The second member 151 includes a semi-cylindrical portion 152 constituting the first cylindrical portion 150A and the second cylindrical portion 150B of the second bearing member 150, and a semi-cylindrical portion 153 constituting the flange portion 150C of the second bearing member 150. Have. The semi-cylindrical part 152 has a shape divided into two by a plane passing through the central axes of the first cylindrical part 150A and the second cylindrical part 150B.

  As shown in FIG. 11, when viewed from the second cylindrical portion 150B side in the axial direction, the second member 151 has an inner circumferential semicircular portion 154, a pair of first straight portions 155A and 155B, a first curved portion 156, a first curved portion 156, and a second curved portion 156. It has an outer shape composed of two curved portions 157, a pair of second straight portions 158, and an outer peripheral semicircular portion 159. Each of these portions is symmetrical with the outer diameter of the first member 141 except that the cut-out portion 150G is recessed in the outer peripheral semicircular portion 159.

  The second bearing member 150 is configured by connecting the two second members 151 having such a configuration such that the first curved portion 156 and the second curved portion 157 are fitted together. For this reason, even if a load is applied to the rotating shaft 112, the second bearing member 150 can rotate the rotating shaft 112 satisfactorily without the second members 151 being displaced from each other. Further, if the second bearing member 150 is formed in one piece, the tip end portion of the arm portion 11A formed in a flat shape is inserted and assembled, so that the inner diameter of the second bearing member 150 is increased and the rotating shaft 112 is increased. The gap between the two will increase. Therefore, by configuring the second bearing member 150 by connecting the two second members 151, the inner diameter of the second bearing member 150 can be formed slightly larger than the outer diameter of the rotating shaft 112, The second bearing member 150 can favorably support the rotating shaft 112.

  As shown in FIGS. 5 and 6, the load belt 160 includes a belt-shaped cloth belt main body 160A and a felt 160B attached to one surface of the belt main body 160A. The belt body 160A has connecting holes 161 at both ends. The load belt 160 is formed in such a width that it can cover most of the outer peripheral surface of the drum member 130 in the width direction in a state where it is wound around the outer peripheral surface of the drum member 130 and arranged in two rows. The load belt 160 is wound around the outer peripheral surface of the drum member 130 by one and a half turns so that the surface to which the felt 160B is attached contacts the outer peripheral surface of the drum member 130. For this reason, even if the diameter of the drum member 130 is small, the area of the load belt 160 that comes into contact with the outer peripheral surface of the drum member 130 can be increased, and the load when rotating the operation tool 11 is made sufficiently large. Can do. Further, the load belt 160 contacts the outer peripheral surface of the drum member 130 over substantially the entire portion where the felt 160B is attached. As described above, the load belt 160 can be used for a long period of time because wear can be reduced and sufficient frictional force can be obtained due to the increased friction area.

  The load belt 160 connects one end of the spring member 162 to a connection hole 161 provided at one end, and the inner portion of the wire cable 180 described later of the adjustment unit Y to the connection hole 161 provided at the other end. One end of the wire 181 is connected. The other end of the spring member 162 is connected to the connecting rod 178 of the frame Z. The load belt 160 has one end connected to the spring member 162 located on the left piece 172L side of the frame member Z, and the other end connected to the inner wire 181 of the wire cable 180 is connected to the frame belt Z. It is wound around the outer peripheral surface of the drum member 130 so as to be positioned on the left side 172R side of Z. As will be described later, the wire cable 180 has one end portion of the outer cover 182 fixed to a through hole of a bent portion 177 bent leftward from the lower end of the left piece portion 172L of the frame Z. Since the other end of the load belt 160 is located on the left side 172R side of the frame Z, the inner wire 181 of the wire cable 180 extends on the extension line of the other end of the load belt 160, and the outer cover 182 One end can be fixed to the through hole of the bent portion 177. For this reason, the inner wire 181 can be satisfactorily attracted to the load belt 160, and the bending portion 177 can be shortened to ensure the strength. Therefore, the bent portion can be bent by the tension that attracts the inner belt 181. It is possible to prevent 177 from being deformed.

  The adjustment part Y has the adjustment dial 115, the mobile body 116, and the wire cable 180, as shown in FIG.4 and FIG.5. The adjustment dial 115 has a disk-like operation panel 115A and a support shaft 115B that is connected to the center of the operation panel 115A and extends in the central axis direction of the operation panel 115A and is threaded on the outer peripheral surface. The operation panel 115 has anti-slip grooves formed on the peripheral surface at regular intervals. The operation panel 115 can be rotated by partially protruding from both side surfaces of the main body 101 to the outside. The support shaft 115B is inserted through a pair of first through holes in which the upper bent portion 175 and the lower bent portion 176 of the front piece 173 of the frame Z are provided.

  The moving body 116 includes a moving body main body 117 and a convex portion 118. The movable body main body 117 is inserted through the support shaft 115B and engaged with a female screw hole 117A that is screwed into a screw provided on the outer peripheral surface of the support shaft 115B, and the other end of the inner wire 181 of the wire cable 180 is engaged and connected. A connection portion 117B is provided. The convex portion 118 protrudes from the moving body main body 117 and is inserted into a long hole 173A provided in the front piece portion 173 of the frame Z. When the adjustment dial 115 is rotated, the moving body 116 moves up and down while being guided by the long hole 173A provided in the front piece 173 of the frame Z. At this time, if the convex portion 118 of the moving body 116 comes into contact with the upper end portion of the long hole 173A, it is difficult to rotate the adjustment dial 115. Therefore, the adjustment dial 115 is rotated too much and the frame Z is deformed. Can be reliably prevented. In other words, the rotation of the adjustment dial 115 is restricted by the convex portion 118 of the moving body 116 and the long hole 173A provided in the front piece 173 of the frame Z.

  One end of the outer cover 182 of the wire cable 180 is fixed to a through hole that penetrates the bent portion 177 of the frame Z. Since the bent portion 177 is provided so as to be orthogonal to the tangential direction of the outer peripheral surface of the drum member 130, the inner wire 181 of the wire cable 180 extends to the drum member 130 in the tangential direction of the outer peripheral surface, and the load belt 160 is excellent. Can be attracted to. Further, the outer cover 182 of the wire cable 180 is fixed to the second through hole 176 </ b> B that has the other end portion penetrating the lower bent portion 176 of the front piece 173 of the frame Z. For this reason, the inner wire 181 of the wire cable 180 extends in parallel with the moving direction of the moving body 116 (the axial direction of the support shaft 115B), and the inner wire 181 can be satisfactorily pulled out from the outer cover 182 to the moving body 116 side. it can. Further, the adjustment dial 115 can rotate the adjustment dial 115 with a small force because the outer diameter of the support shaft 115B is as small as about 1/13 with respect to the outer diameter of the operation panel 115A. For this reason, it is possible to easily finely adjust the vertical position of the moving body 116 by rotating the adjustment dial 115. That is, since the load belt 160 can finely adjust the pressure contact state of the outer peripheral surface of the drum member 130, the load when rotating the operation tool 11 can be easily adjusted to a desired size.

  As shown in FIG. 4, the frame Z in which the components of the load part X and the adjustment part Y are fixed and unitized is a through-hole that penetrates the right side part 172R of the frame Z on the inner surface of the right main body 101R. When joining the left main body, which is screwed with a bolt inserted through and divided into left and right, a cylindrical rib projecting from the inner surface of the left main body is inserted into a through hole formed in the left piece 172L of the frame Z. It is inserted and fixed. Thus, since the load adjustment mechanism L1 is unitized by the frame Z, the load adjustment mechanism L1 can be easily attached to the main body 101 of the training apparatus T1.

  As shown in FIG. 4 and FIGS. 12 to 14, the anti-slip tool 107 is fitted into the mounting frames 6 at both the left and right ends of the front leg 5 and the rear leg 4, and is attached to the ceiling surface of the mounting frame 6. It is attached by screw tightening. The anti-skid tool 107 has a substantially triangular shape in which the shape when the training device T1 is looked up from the lower side is similar to the shape of the tip of each leg 4, 5. The anti-skid tool 107 protrudes between the plurality of grooves 108 extending in parallel in the width direction in which the legs 4, 5 protrude, and the grooves 108, with the legs 4, 5 attached. And a protrusion 109 whose protrusion height from 108 changes in three stages.

  As described above, since the anti-skid tool 107 has the groove portion 108 extending in the width direction and the convex portion 109 whose protrusion height changes in three steps, the training device T1 allows the user to move both the left and right feet. Even if the pedal 11B is placed on the pedal 11B, it can be prevented from shifting in the front-rear direction due to the frictional force between the anti-slip tool 107 and the floor surface.

<Other embodiments>
The present invention is not limited to the first and second embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the first and second embodiments, the case where the operating tool 11 is used while being crushed has been described, but it may be used by rowing. In that case, it is preferable to use a handle grip instead of the pedal 11 </ b> B so that it can be easily gripped.
(2) In the first and second embodiments, the case where the main body 1 is integrally formed from the first support portion 2 and the second support portion 3 is shown. In this way, they may be connected to each other.
(3) In the first embodiment, the case where the main body 1 is integrally formed from the first support portion 2 and the second support portion 3 is shown. However, the main body 1 is formed by being divided into two parts in the width direction, You may make it comprise combining each division surface so that it may face | match.
(4) In the first and second embodiments, the front and rear legs 4 and 5 are formed integrally with the main body 1, but may be formed separately and assembled to the main body 1.
(5) In Example 2, although the protrusion height of the convex part of the anti-slip tool changed in three stages, the protrusion height of the convex part may change in two stages or four or more stages.

DESCRIPTION OF SYMBOLS 1,101 ... Main body 2 ... 1st support part 3 ... 2nd support part 8 ... Top plate 11 ... Operation tool 12, 112 ... Rotary axis T, T1 ... Training apparatus S1, S2 ... Installation end part

Claims (3)

A first support portion extending substantially along the front-rear direction with respect to the user, inclined substantially obliquely upward in a direction away from the user, and having an end portion close to the user in contact with the installation surface;
A crank-like operation tool that projects from both side surfaces of the first support portion in the width direction and is rotated around the rotation axis by the user;
One end side is provided continuously above the first support portion and extends from the one end side while being inclined away from the user toward the installation surface substantially obliquely downward, and the other end side is provided on the installation surface. A second support portion in contact therewith,
In a side view orthogonal to the extending direction of the first support portion, a bottom surface shape from the installation end portion of the first support portion to the installation end portion of the second support portion is formed by a continuous curved surface. A training device characterized by an arch shape.   The training apparatus according to claim 1, wherein the one end side of the second support part is located at a position in the length direction of the first support part.   The training apparatus according to claim 1, wherein a top plate is attached to an upper surface of the first support portion along a longitudinal direction.

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