JP2005245686A - Seat height adjusting device of exercise instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat height adjusting device of an exercise instrument, which can easily adjust a seat height by a lever within reach, can be easily applied to a case in which a space cannot be secured in the forward and backward portions of a seat post. <P>SOLUTION: This seat height adjusting device of the exercise instrument is erected from a base frame 1 of the exercise instrument, an inner seat post 3, which keeps a top cap 7 to mount a seat 4 fastened to its top end portion, is vertically slidably inserted into an outer seat post 2 provided with a plurality of openings 2a arranged in a row in the height direction in a side wall portion, a rotary rod 20 to which a rotary plate 9 selectively engaged into the opening 2a of the outer seat post 2 is inserted onto the inner seat post 3, the rotary plate 9 is rotated through the rotary rod 20 by an operating lever 12 provided in the top cap 7, and the rotary plate 9 can be engaged into and disengaged from the opening 2a of the outer seat post 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a seat height adjusting device for a stationary exercise device of a bicycle type that performs a rotation operation of a petal.

  Recently, a bicycle-type exercise device that exercises muscles by rowing a petal to which a desired load is applied while straddling a saddle-like seat has come into widespread use. However, in such an apparatus, it is necessary to adjust the height of the seat according to the height of the user. Therefore, a seat post is slidably mounted in a height direction on a guide frame that has been erected from the base frame of the conventional driving device, and the seat post is slid in a vertical direction with respect to the guide frame. Some have been proposed to adjust the height of the seat.

  However, in the above-mentioned exercise device, a plurality of holes are usually provided in a row in the height direction in the seat post and the guide frame, and both are fixed by inserting / removing pins in appropriately selected holes of both, The height of the seat is adjusted. However, in such a pin type, there is a problem that since the height adjusting portion is on the main body side, the adjustment cannot be made unless it is lowered from the seat each time the height is adjusted.

  Therefore, as disclosed in Japanese Patent Application Laid-Open No. 2003-275339 or Japanese Patent Application Laid-Open No. 11-169482, a lock pin is pressed against the vertical position of the front and rear of the seat post, and the seat post is fixed by the pressure contact of the lock pin, It has been proposed that the lock contact of the lock pin is released by operating a lock release lever on the seat side so that the seat post can be moved and adjusted.

  However, in the thing of the said Unexamined-Japanese-Patent No. 2003-275339, if there is no space of the front-back direction for a wire or a lock arm, arrangement | positioning of the said wire etc. cannot be performed, and Unexamined-Japanese-Patent No. 11-169482 is described. However, there is a problem in that, if there is no space for providing a lock arm, a return spring or the like, they cannot be arranged. That is, there is a problem that it is not suitable when there is a space restriction around the seat post.

In both cases, if the friction member is worn by long-term use, the lever operating position changes, and as a result, maintenance adjustment is required. Alternatively, initial assembly adjustment is necessary to absorb the dimensional tolerances of the parts, resulting in variations in quality and increased costs. Furthermore, due to restrictions on the seat up / down mechanism, the seat post cannot be removed or inserted unless the cover on the side of the main body is removed, and there is a problem that maintenance is difficult.
JP 2003-275339 A Japanese Patent Laid-Open No. 11-169482

  In view of these points, the present invention allows the seat height to be easily adjusted by a lever at hand, and the seat height adjustment to be easily applied to those that cannot secure a space in the front-rear direction of the seat post. The object is to obtain a device.

  According to a first aspect of the present invention, there is provided an outer seat post that is erected from a base frame of an exercise device and has a plurality of openings arranged in a row in a height direction on a side wall portion, and slides in the vertical direction within the outer seat post. An inner seat post that is movably inserted and has a top cap fixed to the top end portion thereof, and is inserted into the inner seat post and selectively engaged with and disengaged from the opening of the outer seat post at the lower portion. A rotary rod having a rotary plate mounted thereon, and a rotary plate operating mechanism for rotating the rotary plate through the rotary rod by an operating lever provided on the top cap.

  The invention according to claim 2 is the invention according to claim 1, wherein the rotary plate operating mechanism includes a sprocket mounted on an upper portion of the rotary rod, and an operation provided on the top cap and mounted on the sprocket. And a chain interlockingly connected to the lever.

  The invention according to claim 3 is the invention according to claim 2, wherein the chain is biased by a return spring in a direction in which the rotary plate engages with the opening of the outer seat post.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the outer seat post has a cylindrical shape with a rectangular cross section, and the rotary plate rotates according to the rotational position of the rotary plate. The engaging piece at the tip of the plate is engaged with the opening of the outer seat post or the engaging piece is drawn into the outer seat post.

  The invention according to claim 5 is the invention according to claim 4, wherein the rotary plate is formed with a notch at the rear corner with respect to the rotational direction of the rotary plate into the outer seat post. It is characterized by being.

  The invention according to claim 6 is the invention according to any one of claims 1 to 5, wherein at least one non-circular portion is formed at each of the upper and lower end portions of the rotary rod, and at each of the upper and lower end portions of the rotary rod. A sprocket or a rotary plate having holes similar to the outer shape of the upper end or lower end of the rotary rod is fitted.

  The invention according to claim 7 is the invention according to any one of claims 1 to 6, wherein the top cap is provided with an operation lever, a sprocket, and a slider for connecting the operation lever and the chain mounted on the sprocket. In addition, a covering member having a U-shaped cross section for preventing the operation lever, the return spring, the chain and the slider from falling off is mounted.

  The invention according to claim 8 is the invention according to any one of claims 1 to 7, wherein the inner seat post or the outer seat post is provided with a plurality of holes in the vertical direction, and the outer seat post or the inner seat On the post side, a ball ball having a diameter larger than that of the hole or a protrusion having a circular shape facing at least the hole is urged in the protruding direction, and the rotary plate is provided on a side surface of the outer seat post. The tip of the ball sphere or protrusion is selectively engaged with the hole when moved to the open position.

  The invention according to claim 9 is the invention according to any one of claims 1 to 8, wherein an operation lever that is swingable about a horizontal axis is disposed at a rear portion of the top cap, and the U-shaped cross section is provided. The trailing edge of the covering member is approximate to the rotation locus of the operation lever.

  The invention according to claim 10 is the invention according to any one of claims 1 to 9, wherein the operation lever includes a finger hook portion for hooking a finger, and a stopper portion having a surface bent substantially at right angles from the plane of the finger hook portion. And a lever portion bent at a right angle forward from one end of the stopper portion, and a boss portion serving as a rotation center and an interlocking connecting piece with a chain are provided on the lever portion. And

  As described above, the inner seat post is slidably inserted in the up and down direction in the outer seat post which is erected from the base frame and provided with a plurality of openings in a row in the height direction on the side wall, Since the rotary plate provided in the inner seat post is selectively engaged with the opening of the outer seat post by the operation lever provided in the top cap, the seat height adjustment is on the seat side. It is not necessary to step down from the seat each time the height is adjusted, and the present invention can be applied to a case where no space can be secured in the front-rear direction of the outer seat post. In addition, the outer seat post and inner seat post are fixed by engaging the rotary plate and the opening, so there is no problem such as wear, it can withstand long-term use, and the cover on the side of the body is removed. At least the inner seat post can be removed or returned to the original position, and the maintenance can be easily performed.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is a partially cutaway side view showing a schematic configuration of an exercise device according to the present invention, in which an outer seat post 2 having a rectangular cross section is erected from a bottom frame 1. The inner seat post 3 is slidably disposed in the height direction, and the seat 4 is mounted on the top end of the inner seat post 3. The outer seat post 3 has a plurality of openings 2a formed in rows in the right and left side walls, and a rotary plate (not shown) provided at the lower end of the inner seat post 3 is selectively used. To be engaged. The inner seat post 3 is moved up and down along the outer seat post 2, the rotary plate is engaged with the opening 2a of the outer seat post 2, and the height of the seat 4 is adjusted. The muscles can be trained by stepping on the petal 5 provided on the body of the exercise device over 4.

  FIG. 2 is an external view of the inner seat post 3. A top cap 7 provided with an operation lever 12 and the like is fixed to the top end of the inner seat post 3 having a rectangular cross section. Is provided with a covering member 8 having a U-shaped cross section, and a sheet (not shown) is attached to the upper portion of the covering member 8 so as to cover the covering member 8. On the other hand, a rotary plate 9 that selectively engages with an opening 2 a provided in the outer seat post 2 is provided at the lower end of the inner seat post 3.

  3 and 4 are perspective views showing the configuration of the top cap 7 portion, and FIG. 5 is a plan sectional view of the top cap 7. The cross section T-shaped extending in the front-rear direction of the exercise device at the top end of the inner seat post 3. A top cap 7 on which a partition wall 10 is provided is fixed. An operation lever 12 that can swing about a shaft 11 is pivotally attached to the top cap 7 near the rear part, and a sprocket 14 is disposed in an opening 13 formed in the partition wall 10 on the front part. Furthermore, the partition 10 is provided with a slider 16 that is movable in the front-rear direction along a guide 15 extending in the front-rear direction.

  FIG. 6 is a perspective view of the operation lever 12, and includes a finger hooking portion 12a for hooking a finger, a stopper portion 12b having a surface bent substantially at right angles from the plane of the finger hooking portion 12a, and one side end of the stopper portion 12b. And a lever portion 12c that is bent forward at a right angle and extends forward along the side surface of the top cap 7, and a boss portion 12d that is pivotally supported by the shaft 11 is provided at an intermediate portion of the lever portion 12c. A hook 12e is provided at the tip of the lever portion 12c. The hook 12 e is engaged with the locking piece 16 a of the slider 16, and one end of the chain 17 is connected to the front end of the slider 16. The chain 17 is wound around the sprocket 14, and the other end extends to the back side of the partition 11 so as to sandwich the partition 11 (FIG. 5). The tip is engaged with a pin 19 provided on the top cap 7.

  Incidentally, as shown in FIG. 7, a rotary rod 20 is inserted into the inner seat post 3, and the top end of the rotary rod 20 projects into the top cap 7, and the sprocket 14 is formed at the projecting portion. It is installed. That is, flat surfaces 21 that are parallel to each other are formed on both side surfaces of the upper end portion and the lower end portion of the rotary rod 20, and the upper end portion of the rotary rod 20 is the same as the upper end portion of the rotary rod 20 of the sprocket 14. The sprocket 14 is fixed to the top end of the rotary rod 20 by being inserted into and engaged with the hole 14 a having a shape (FIG. 5) and attaching a nut 22 to the rotary rod 20.

  On the other hand, a bottom cap 23 is fixed to the lower end of the inner seat post 3, and the lower end portion of the rotary rod 20 protrudes below the bottom cap 23, and the protruding portion has an opening 2 a of the outer seat post 2. A rotary plate 9 to be engaged and disengaged is fixed. That is, the rotary plate 9 is also formed with a hole 9a having the same shape as the lower end of the rotary rod 20 (FIG. 8). The rotary rod 20 is inserted into the hole 9a, and the nut 24 is attached to the rotary rod 20. Thus, the rotary plate 9 is fixed to the rotary rod 20.

As shown in FIG. 8, the rotary plate 9 is integrally formed with an engagement piece 9 b that protrudes in the radial direction from the central disk portion and can be engaged with the opening 2 a of the outer seat post 2. In FIG. 8, as shown by a solid line, it is possible to rotate between a position engaged with the opening 2a of the outer seat post 2 and a position drawn from the opening 2a shown by a chain line. The both engaging pieces 9b in the rotary plate 9 inclined side portions 9b ₁ at both corners on one diagonal line are notches formed, the rotary plate 9 is drawn indicated by the chain line in FIG. 8 and the inclined side portion 9b ₁ is are set to be parallel to the inner wall surface of the outer seat post 2 when rotated to a position.

  By the way, the bottom cap 23 provided at the lower end of the inner seat post 3 has a position where the rotary plate 9 is engaged with the opening 2a of the outer seat post 2 and the opening as shown in FIGS. The engaging pieces 9b of the rotary plate 9 are brought into contact with each other at the position pulled from 2a, and stoppers 23a and 23b for restricting the rotation range are provided. Thus, at the position where the rotary plate 9 is engaged with the opening 2a of the outer seat post 2, the engaging piece 9b of the rotary plate 9 abuts against the stopper 23a, and the engaging piece 9b is held at the protruding position (see FIG. 9) On the other hand, the engagement piece 9b of the rotary plate 9 abuts against the stopper 23b at a position where the rotary plate 9 is pulled in from the opening 2a.

  FIG. 11 is a vertical side view of the upper position of the outer seat post 2, and a plurality of detent holes 25 are formed in the height direction on the rear side surface of the inner seat post 3 as shown in FIGS. 2 and 11. On the other hand, the outer seat post 2 is provided with a cylindrical chamber 26 at an upper position thereof, and the inside of the chamber 26 has a diameter of the hole 25 of the inner seat post 3. A ball sphere 27 having a large diameter is accommodated. When the ball sphere 27 is urged in a protruding direction by a spring 28 and the rotary plate 9 comes to a position facing one of the openings 2a of the outer seat post 2, The tip of the ball sphere 27 is in sliding contact with any one of the holes 25 in the inner seat post 3. Instead of the ball sphere 27, a protrusion having a circular tip may be used.

  Therefore, when adjusting the height of the seat 4, when the finger is placed on the finger hooking portion 12 a of the operation lever 12 while being seated on the seat 4 and pulled upward, the hook 12 e of the operation lever 12 in FIG. The slider 16 rotated in the direction and engaged with the hook 12e is moved to the left (FIG. 4). Therefore, the chain 17 connected to the slider 16 is pulled against the spring 18, the sprocket 14 is rotated through the chain 17, and the rotary plate 9 is also rotated integrally through the rotary rod 20. Then, the rotary plate 9 is moved to the position where it is drawn into the outer seat post 2 as shown by the chain line in FIG. 8, and the engagement with the opening 2a of the outer seat post 2 is released. Therefore, the height of the seat 4 can be adjusted by moving the inner seat post 3 in the vertical direction.

  By moving the inner seat post 3 in the vertical direction, the ball ball 27 slides on the detent hole 25 to generate a click feeling, whereby the rotary plate 9 provided on the inner seat post 3 is moved to the outer side. It can be detected that the seat post 2 has moved to a position corresponding to the opening 2a at a desired position. Therefore, when the hand is released from the operation lever 12 at that time, the sprocket 14 is automatically returned to the opposite direction by the spring 18 and the engagement piece 9b of the rotary plate 9 is moved to the outer sheet as shown by the solid line in FIG. The seat 4 is held at a selected height by being inserted into and engaged with the opening 2a of the post 2.

  Thus, in the height adjusting device, the position of the inner seat post 3 with respect to the outer seat post 2 can be released by the operation lever 12 provided in the vicinity of the seat 4, and the height adjustment needs to be lowered from the device each time. And can be done easily. In addition, since the mechanism for fixing / releasing the outer seat post 2 and the inner seat post 3 is disposed in the outer seat post 2 and is not exposed before and after the outer seat post 2, the space is restricted. I will not receive it.

  Further, the operation lever 12 is provided with a stopper portion 12b having a surface bent at a substantially right angle from the plane of the finger hanging portion 12a on which the finger is hung, and is bent at a right angle forward from one end of the stopper portion 12b. Since the lever portion 12c extending forward along the side surface of the cap 7 is provided, when the finger is inserted below the finger-hanging portion 21a in order to operate the operation lever 12, the tip of the finger is placed on the stopper portion 12b. By abutting, the finger is not inserted more than necessary, and the finger is prevented from being pinched between the top cap 7.

Furthermore, the engagement piece 9b of the rotary plate 9 on both corners on one diagonal line which is located on the rear side with respect to the rotation direction of the direction the rotary plate 9 is retracted, notched inclined side portion 9b ₁ When formed, when the rotary plate 9 is rotated to the retracted position indicated by the chain line in FIG. 8, the inclined side portion 9 b ₁ is rotated to a position parallel to the inner wall surface of the outer seat post 2. The rotation angle of the sprocket 14 and the operation lever 12 can be reduced.

  Further, the planes 21 that are parallel to each other are formed on both side surfaces of the upper end and the lower end of the rotary rod 20, and the portions where the planes 21 that are parallel to each other are formed on the both sides are similarly provided on the sprocket 14 or the rotary plate 9. The sprocket 14 and the rotary plate 9 can be integrated with each other by inserting and engaging with a hole having a proper shape. When the operation position of the operation lever 12 in the top cap portion is determined, the lower end of the inner seat post 3 is automatically set. The position of the rotary plate 9 is determined. In the above-described embodiment, the rotary rod 20 is formed with the planes 21 parallel to each other on both the upper end portion and the lower end portion thereof, but the cross section may be polygonal or non-circular.

  2 and 5, the top cap 7 is provided with a covering member 8 having a U-shaped cross-section, and the inner wall surface of the operation lever 12 and the partition wall 10 attached to the top cap 7 are provided. The slider 16, the chain 7, and the return spring 18 that are movable in the front-rear direction along the guide 15 extending in the front-rear direction are prevented from falling off. That is, the lever portion 12 c of the operation lever 12 extends forward along the side surface of the top cap 7 and extends forward along the inner surface of the covering member 8, and on the outer surface of the slider 16 and the chain 17. Since the covering member is also positioned, the lever portion 12 c, the slider 16, and the chain 17 are moved sideways by the inner surface of the covering member 8 and are prevented from being detached from the top cap 7.

  Further, as shown in FIG. 5, the slider 16 and the chain 17 can be connected to each other by engaging a pin of the chain 17 with a hook-like portion 16b provided at the end of the slider 16. In this case, by making the distance between the opening of the hook-like portion 16b and the inner surface of the covering member 8 equal to or less than the width of the chain 17, it is possible to easily prevent the connection from being disconnected. Furthermore, the length of the opening 13 of the top cap 7 in the front-rear direction is made smaller than the outer peripheral diameter necessary for the chain 17 to be detached from the sprocket 14, thereby easily preventing the chain 17 from being displaced from the sprocket 14. Can do.

  In the case where a ball ball 27 having a diameter larger than that of the detent hole 25 provided on the rear side surface of the inner seat post 3 is slidably contacted, the slide between the ball ball 27 and the hole 25 is made. The contact feels a click and makes it easy to recognize the fixed position of the inner seat post 3, and the user releases the operation lever 12 at an intermediate position between the opening 2a and the opening 2a of the outer seat post 2, and the opening 2a And the position of the rotary plate 9 are prevented from shifting.

  Incidentally, the rear end surface of the top cap 7 and the rear end edge of the covering member 8 are approximated to the rotation locus of the operation lever 12. Accordingly, the distance between the operation lever 12 and the mechanism at the base thereof hardly changes, and the appearance is smart, and dangers such as pinching of fingers can be eliminated.

1 is a partially cutaway side view showing a schematic configuration of an exercise device of the present invention. The figure which shows the external shape of an inner seat post. The perspective view which shows the structure of a top cap part. The figure which shows the state which operated the operation lever in FIG. The top sectional view of a top cap part. The perspective view which shows the shape of an operation lever. The figure which shows the mounting part of a rotary rod, a sprocket, and a rotary plate. Explanatory drawing which shows the operating state of a rotary plate. It is a figure which shows the structure of a rotary plate part, Comprising: The figure which shows the state which the latching piece part protruded. It is a figure which shows the structure of a rotary plate part, Comprising: The figure which shows the state by which the latching piece part was drawn. The vertical side view in the upper part position of an outer seat post.

Explanation of symbols

2 Outer seat post 3 Inner seat post 4 Seat 5 Petal 7 Top cap 8 Cover member 9 Rotary plate 10 Bulkhead 11 Shaft 12 Operation lever 14 Sprocket 15 Guide 16 Slider 17 Chain 18 Return spring 19 Pin 20 Rotary rod 23 Bottom cap 25 Hole 27 Ball sphere 28 Spring

Claims (10)

  An outer seat post which is erected from the base frame of the exercise device and has a plurality of openings in a row in the height direction on the side wall portion, and is slidably inserted into the outer seat post so as to be slidable in the vertical direction. An inner seat post to which a top cap for attaching a seat is fixed, and a rotary rod that is inserted into the inner seat post and a rotary plate that is selectively engaged with and disengaged from the opening of the outer seat post is attached to the lower portion. And a rotary plate operating mechanism for rotating the rotary plate via the rotary rod by an operating lever provided on the top cap.   The rotary plate operation mechanism has a sprocket mounted on the upper portion of the rotary rod, and a chain that is mounted on the sprocket and interlocked with an operation lever provided on the top cap. The seat height adjusting device of the exercise device according to claim 1.   The seat height adjusting device for an exercise device according to claim 2, wherein the chain is urged by a return spring in a direction in which the rotary plate engages with the opening of the outer seat post.   The outer seat post has a cylindrical shape with a rectangular cross section, and depending on the rotational position of the rotary plate, the engaging piece at the tip of the rotary plate is engaged with the opening of the outer seat post or the The seat height adjusting device for an exercise device according to any one of claims 1 to 3, wherein the engaging piece portion is drawn into the outer seat post.   5. A seat for an exercise device according to claim 4, wherein the rotary plate has a notch formed at a rear corner with respect to a rotation direction of the rotary plate into the outer seat post. Height adjustment device.   At least one non-circular portion is formed at each of the upper and lower end portions of the rotary rod, and a sprocket having holes similar to the outer shape of the upper end portion or the lower end portion of the rotary rod, respectively, at the upper and lower end portions of the rotary rod. The seat height adjusting device for an exercise device according to any one of claims 1 to 5, wherein a rotary plate is fitted.   The top cap is provided with an operation lever, a sprocket, and a slider for connecting the operation lever and the chain mounted on the sprocket, and a cross-sectional cover for preventing the operation lever, the return spring, the chain, and the slider from falling off. A seat height adjusting device for an exercise device according to claim 1, wherein a character-shaped covering member is mounted.   A plurality of holes are provided in the side surface of the inner seat post or the outer seat post in the vertical direction, and the outer seat post or the inner seat post faces the ball ball having a diameter larger than the hole or at least the hole. When the projection having a circular surface is urged in the projecting direction and the rotary plate moves to the opening position provided on the side surface of the outer seat post, the tip of the ball ball or projection is in the hole. The seat height adjusting device for an exercise device according to any one of claims 1 to 7, wherein the seat height adjusting device is selectively engaged.   An operating lever that can swing about a horizontal axis is disposed at the rear of the top cap, and the rear edge of the U-shaped covering member is approximated to the rotation locus of the operating lever. The seat height adjusting device for an exercise device according to any one of claims 1 to 8.   The operation lever has a finger hooking portion for hooking a finger, a stopper portion having a surface bent substantially at a right angle from the plane of the finger hanging portion, and a lever portion bent at a right angle forward from one side end of the stopper portion. The seat height adjustment of the exercise device according to any one of claims 1 to 9, wherein the lever portion is provided with a boss portion serving as a rotation center and an interlocking connecting piece with a chain. apparatus.

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