JP2002360731A - Training apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a load device highly resist impact. SOLUTION: A pair of support plates 13 and 14 is provided and bearings 30 are arranged on the respective support boards 13 and 14. A rotor shaft 26 with a rotor 24 fixed thereon is rotatably supported with the bearings 30 to eliminate possible unstableness of the support of the rotor shaft 26 due to impact or the like in transit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a training device which is a bicycle-type health promotion device, and more particularly, to a training device provided with a load device resistant to impact.

[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 the conventional training device, the shaft of the load device is inserted through a stay having a fixed U-shaped opening so as not to rotate itself. Was fixed with a bolt and a nut to fix the shaft.

However, in such a conventional configuration, the opening may be widened due to an impact during transportation or the like, and the shaft may not be stably supported.

An object of the present invention is to provide a training apparatus provided with a load device resistant to impacts, overcoming the problems in the prior art.

[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; In that the rotor shaft to which the rotor is fixed is rotatably supported by the bearing. By adopting such a configuration, the rotor shaft is rotatably supported by the bearing, so that there is no possibility that the support of the rotor shaft becomes unstable due to an impact during transportation or the like.

According to a second aspect of the present invention, a training device according to the present invention is characterized in that a spring-biased rotatable tension applying arm for applying tension to a traveling drive transmission member has a center of rotation of the crankshaft and the rotor shaft. And a roller provided on the tension applying arm is pressed against the traveling drive transmission member. By adopting such a configuration, the configuration can be made compact, and good tension can be automatically applied to the traveling drive transmission member.

[0009]

1 and 2 show the appearance of a training apparatus according to the present invention. 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 bearings 30 for supporting the rotor shaft 26 are arranged on the support plates 13 and 14 so as to rotate the rotor shaft 26 itself. Is sufficiently large to ensure the durability of the bearing 30, and the outer diameter of the pulley 29 fitted to the rotor shaft 26 can be made extremely small. Sufficient gear ratio can be ensured by gear change only at the first gear, and the configuration can be simplified. Further, the stator 25 is fixed to the support plate 13, and the rotor 24 is inserted into the through hole 35 of the stator 25.
Is loosely inserted, so that the position management of the rotor 24 and the stator 25 can be easily performed.

The pedestal 36 of the support plate 13 into which a screw 38 for rotatably supporting the tension applying arm 37 is screwed is provided.
Since the support plate 13 is disposed at an intermediate position between the bearings 22 and 30 disposed on the support plate 13, the configuration of the support plate 13 can be made compact, and the support plate 13 can easily pass through the space 15. Further, 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 applied to the belt. It works well and can automatically apply good tension to the belt.

Furthermore, 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 of the main body frame 2, the handle post 3, and the upper frame 12, There is no need to incorporate and fix each part from both the left and right sides of the main body frame 2, the drive unit 1A can be assembled from only one side with the drive unit 1A lying down, and the training device 1 can be assembled by only one worker. Can be performed and workability can be improved.

Further, since the drive unit 1A in which the respective components are assembled directly to the support plates 13 and 14 may be fixed to the main body frame 2, the assembly line with a short mass production process is sufficient.
The productivity is improved as compared with the conventional one, and the drive unit 1A can be inspected at a place other than the assembly line, and the inspection of the electromagnetic brake 23 and the like can be easily performed.

Further, a large-diameter and heavy pulley 16 is provided near a support plate 14 which is formed so as not to pass through the space 15 and has a higher rigidity than the other support plates 13. Therefore, the pulley 16 can be stably supported.

Note that the present invention is not limited to the above-described embodiment, and various modifications can be made as necessary.

[0028]

As described above, according to the present invention, a load device resistant to impact can be provided.

That is, since a pair of support plates are provided, bearings are provided on each support plate, and the rotor shaft to which the rotor is fixed is rotatably supported by these bearings, so that the rotor shaft is rotatable by the bearings. Since the support is provided, there is no possibility that the support of the rotor shaft becomes unstable due to an impact during transportation.

Also, a spring-biased rotatable tension applying arm for applying tension to the traveling drive transmission member is disposed so that its rotation center is located between the crankshaft and the rotor shaft. If the roller provided on the tension applying arm is pressed against the traveling drive transmission member, the configuration can be made compact and good tension can be automatically applied to the traveling drive transmission member.

[Brief description of the drawings]

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

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]

 DESCRIPTION OF SYMBOLS 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 24 Rotor 25 Stator 26 Rotor Shaft 27 Rotor main body 31 Stator main 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 support plate, and the rotor shaft to which the rotor is fixed is rotatably supported by these bearings. Training device featuring. 2. A spring-biased rotatable tension applying arm for applying tension to the traveling drive transmission member is disposed such that its rotation center is located between the crankshaft and the rotor shaft. The training device according to claim 1, wherein a roller provided on the tension applying arm is pressed against the traveling drive transmission member.