JP2002360733A - Load device for training apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the positional management of rotors and stators. SOLUTION: A pair of support boards 13 and 14 is provided and bearings 30 are arranged on the respective support boards 13 and 14. A rotor shaft 26 having a rotor 24 fixed thereon with the bearings 30 is rotatably supported while the stator 25 is fixed on one 13 of the pair of support boards. The rotor shaft 26 is inserted loosely into a through hole 35 formed in the stator 26 to facilitate the positioning of the rotor 24 and the stator 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a load device for a training device which is a bicycle-type health promotion device,
The present invention relates to a load device of a training device with improved position accuracy.

[0002]

2. Description of the Related Art Generally, a training apparatus of this kind includes:
It has a handle to be gripped by both hands and a saddle to sit on, and the pedals are rotated while sitting on the saddle and gripping the handle to strengthen the legs.

Therefore, a load device such as an electromagnetic brake for applying a load when the pedal is rotated is attached to the training device. For this reason, an annular drive transmission such as a pulley or a sprocket is provided to the pedal via a crankshaft. The members are connected. On the other hand, an annular driven transmission member such as a pulley or a sprocket is also mounted on the shaft of the load device, and these annular drive transmission member and the annular driven transmission member include a belt or a chain. A traveling drive transmission member is wound. Therefore, when the pedal is rotated, the rotation of the pedal is transmitted to the load device. Since the braking device generates the braking torque, the load from the load device acts on the pedal. become.

[0004]

By the way, in a conventional load device of a training device, a stator is press-fitted into a shaft thereof, and a rotor is rotatably supported on the shaft via a bearing.

[0005] However, when the stator is press-fitted into the shaft in this manner, there is a problem that an error may occur in the position of the stator on the shaft due to the press-fitting, so that position management is difficult.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a load device for a training apparatus which can overcome the problems of the conventional one and can easily perform position management of a rotor and a stator.

[0007]

According to a first aspect of the present invention, there is provided a training apparatus comprising: a pair of support plates; a bearing provided on each of the support plates; A rotor shaft to which the rotor is fixed is rotatably supported by the bearings, and a stator is fixed to one support plate, and the rotor shaft is loosely inserted into a through hole formed in the stator. By employing such a configuration, the positioning of the rotor and the stator can be easily performed, and thus the position of the rotor and the stator can be easily managed.

A feature of the training apparatus of the present invention according to claim 2 is that the crankshaft and the rotor shaft are connected by a one-stage traveling drive transmission member. By adopting such a configuration, the configuration can be simplified and a compact configuration can be achieved.

[0009]

1 and 2 show an appearance of a training apparatus to which a load device according to the present invention is applied. In these figures, a handle 4 that is held by both hands via a handle post 3 is supported at a front portion of a metal body frame 2 of the training apparatus 1, and a rear portion of the body frame 2 is A saddle 6 for sitting down is supported via a saddle post 5. Also, both sides of the main body frame 2 are covered with exterior covers 7 made of plastic or the like, and the pedals 8 are disposed outside the exterior covers 7 so as to protrude.

FIGS. 3 to 6 show the training apparatus 1.
It shows the main part of FIG. FIG. 4 shows a driving unit 1 which is a further important part of the training apparatus 1.
A is shown. The main body frame 2 is formed in an inequilateral quadrilateral shape as a whole. That is, the main body frame 2 has a lower frame 9 which is horizontally arranged and located at a lower portion. The front end of the lower frame 9 is connected to the handle post 3, which is inclined so that the upper part projects forward, and the upper end of the lower frame 9 projects forward. The rear frame 11 shorter than the handle post 3 is connected.

Further, an upper frame 12, which is inclined and disposed so that a front portion is located downward, is connected between the handle post 10 and an upper end of the rear frame 11 so as to be bridged. In the present embodiment,
The rear frame 11 and the upper frame 12 are formed by integral pipes having curved middle portions.

A connecting portion between the rear frame 11 and the upper frame 12 and an intermediate portion between the lower frame 9 include:
The saddle post 5 which is arranged in an inclined manner is supported.

As shown in FIG. 6, a pair of support plates 13 and 14 made of a metal such as aluminum are fixed to the main body frame 2. Of the pair of support plates 13 and 14, one support plate 13 is
It is formed in a shape that can pass through a space 15 defined by the lower frame 9, the handle post 3, and the upper frame 12 of the saddle post 5 and the main body frame 2. The other support plate 14 has a larger size than the support plate 13 that cannot pass through the space 15.

A pulley 16 as an example of an annular drive transmitting / receiving member supported by the support plates 13 and 14 has a boss 18 fitted on the outer periphery of a crankshaft 17 disposed at the center. The six arms 19 project from the boss 18 so as to extend radially outward at an angle of 60 degrees from each other. An annular rim 20 is fixed to the outer periphery of each arm 19.

The crankshaft 17 is connected to the pedal 8 via a crank arm 21 indicated by an imaginary line in FIG. 3. When the pedal 8 is rotated, the entire pulley 16 is connected via the crankshaft 17. Are rotated synchronously. Also, both ends of the crankshaft 17 are respectively connected to the two support plates 13, 1 via bearings 22.
4 is rotatably supported at each upper end.

An electromagnetic brake 23 is provided near the pulley 16 as an example of a load device that applies a load when the pedal 8 is rotated.
Is composed of a rotor 24 and a stator 25. The rotor 24 has a rotor main body 27 fixed to the outer periphery of a rotor shaft 26 disposed at the center by a plurality of bolts (not shown).
An annular rotor flange 28 is provided around the outer circumference of the rotor. A pulley 29 having a diameter slightly larger than that of the rotor shaft 26 and much smaller than that of the rim 20 is fitted on the rotor shaft 26 which is an extension of the rim 20 of the pulley 16 in the diameter direction. Both ends of the rotor shaft 26 are respectively connected to the two support plates 1 through bearings 30.
The other upper end portions 3 and 14 are rotatably supported.

On the other hand, the stator 2 of the electromagnetic brake 23
5 has a flat rectangular parallelepiped stator main body 31 located inside the rotor main body 27 and the rotor flange 28 with a gap therebetween. The stator main body 31 is spaced apart from the rotor main body 27 in the diametric direction. Multiple coils 32 are wound at two locations. The stator body 31 includes a plurality of bolts 33 and nuts 3.
4, the support plate 13 is fixed to another upper end. The rotor shaft 26 is connected to the stator main body 31.
Are inserted through a through-hole 35 formed in the middle part in the longitudinal direction with a gap. Therefore, when a current flows through each of the multiple coils 32, a magnetic flux in a direction that restricts the rotation of the rotor 24 is generated.

A belt (not shown) as an example of a traveling drive transmission member is wound around the large diameter rim 20 of the pulley 16 and the small diameter pulley 29 of the electromagnetic brake 23. When the pedals 8 are depressed with the feet to rotate the crankshaft 17, the rotation of the crankshaft 17 causes the pulley 16 to rotate.
The rotation of the pulley 16 is transmitted to the pulley 29 of the electromagnetic brake 23 via the belt. However, since the rotor shaft 26 integral with the pulley 16 receives a force that restricts the rotation of the rotor 24 by the current flowing through each of the multiple coils 32, this load is applied to the pulley 16 and the pedal 8 via the belt. Transmitted, each pedal 8
As a result, the force required to rotate is increased, and the muscle strength can be increased.

Further, the two bearings 22, 30 of the support plate 13 are provided.
A pedestal 36 is protrudingly provided at an intermediate position of the pedestal 3.
6, one end of a tension applying arm 37 for applying tension to the belt is rotatably supported by a screw 38.

A roller 39 which is in pressure contact with the belt is rotatably supported at an intermediate portion in the longitudinal direction of the tension applying arm 37, and the other end of the tension applying arm 37 has this tension applying arm. A plurality of spring engaging portions 41 for engaging a coil spring 40 for applying tension to the arm 37 are formed. The other end of the coil spring 40 (not shown) is held by the lower frame 9 of the main body frame 2.

The drive unit 1A shown in FIG. 4 includes the support plates 13 and 14, the pulley 16 supported by the support plates 13 and 14, the electromagnetic brake 23, the tension applying arm 37, and the like.

According to the configuration of the above-described embodiment, the stator 25 is fixed to the support plate 13 and the rotor 24 is loosely inserted into the through hole 35 of the stator 25. Management can be performed easily. In addition, the bearing 30 that supports the rotor shaft 26 by rotating the rotor shaft 26 itself is attached to each support plate 1.
Since the bearings 30 and 14 are provided, the bearings 30 can be made sufficiently large to ensure the durability of the bearings 30, and the outer diameter of the pulley 29 fitted to the rotor shaft 26 can be extremely small. Both pulleys 16 and 2 can be made smaller.
9, it is possible to secure a sufficient speed ratio with only one speed change, and to simplify the configuration. further,
Since one support plate 13 is formed in a shape that can pass through the space 15 defined by the saddle post 5 and the lower frame 9, the handle post 3, and the upper frame 12 of the main body frame 2, the left and right sides of the main body frame 2 It is not necessary to incorporate and fix each part from
The training apparatus 1 can be assembled from only one side with A downside down, the training apparatus 1 can be assembled by only one worker, and workability can be improved.

Furthermore, since the drive unit 1A in which the respective parts are assembled directly to the support plates 13 and 14 may be fixed to the main body frame 2, the assembly line in which the mass production process is short is sufficient, and the productivity is improved as compared with the conventional one. Will be
It is also possible to inspect the drive unit 1A at a place other than the assembly line, and it is possible to easily inspect the electromagnetic brake 23 and the like.

Also, a large-diameter and heavy pulley 16 is provided near a support plate 14 which has a shape that cannot pass through the space 15 and has a greater rigidity than the other support plates 13. Therefore, the pulley 16 can be stably supported.

Further, a pedestal 36 of the support plate 13 into which a screw 38 for rotatably supporting the tension applying arm 37 is screwed.
Is disposed at an intermediate position between the two bearings 22 and 30 disposed on the support plate 13, so that the configuration of the support plate 13 can be made compact. Since the roller 39 of the tension applying arm 37 is pressed against a belt (not shown) wound around the pulleys 16 and 29 from a direction substantially perpendicular to the belt, the elastic force of the coil spring 40 is reduced. Good tension can be automatically applied to the belt by acting well on the belt.

It should be noted that the present invention is not limited to the above-described embodiment, and various changes can be made as needed.

[0027]

As described above, according to the present invention, the position management of the rotor and the stator can be easily performed.

That is, a pair of support plates are provided, bearings are provided on each of the support plates, and the rotor shaft fixed to the rotor is rotatably supported by these bearings, and the stator is fixed to one of the support plates. Since the rotor shaft is loosely inserted into the through hole formed in the stator, the positioning of the rotor and the stator can be easily performed, so that the position of the rotor and the stator can be easily managed.

If the crankshaft and the rotor shaft are connected by a one-stage traveling drive transmission member, the structure can be simplified and a compact structure can be achieved.

[Brief description of the drawings]

FIG. 1 is a left side view showing an embodiment of a training device to which a load device according to the present invention is applied.

FIG. 2 is a plan view of FIG. 1;

FIG. 3 is an enlarged left side view of a main part of FIG. 1 from which an exterior cover is omitted.

FIG. 4 is an enlarged left side view of a drive unit as a main part of FIG. 1;

FIG. 5 is a longitudinal sectional view taken along line VV in FIG. 4;

FIG. 6 is an exploded perspective view of FIG. 4;

[Explanation of symbols]

 Reference Signs List 1 training device 1A drive unit 2 main body frame 3 handle post 4 handle 5 saddle post 6 saddle 8 pedal 13,14 support plate 15 space 16,29 pulley 17 crankshaft 20 rim 22,30 bearing 23 electromagnetic brake (load device) 24 rotor Reference Signs List 25 stator 26 rotor shaft 27 rotor body 31 stator body 32 multiple coils 35 through hole 36 pedestal 37 tension applying arm 38 screw 39 roller 40 coil spring

Claims (2)

[Claims] An annular drive transmission member is provided on a crankshaft connected to a pedal, and a traveling drive member is provided on the annular drive transmission member and an annular drive transmission member provided on a shaft of a load device comprising a rotor and a stator. In a training device in which a drive transmission member is wound, a pair of support plates are provided, bearings are provided on each of the support plates, and the bearings rotatably support a rotor shaft to which the rotor is fixed, and A load device for a training device, wherein the stator is fixed to one support plate, and the rotor shaft is loosely inserted into a through hole formed in the stator. 2. The training apparatus according to claim 1, wherein the crankshaft and the rotor shaft are connected by a single-stage traveling drive transmission member.