JPH0246873A - Load control mechanism for physical training equipment - Google Patents

Abstract

PURPOSE:To prevent the generation of a pressed trace by the elastic body of a flywheel by installing a spring for urging a roller in the press contact direction to the flywheel and installing a regulating tool which regulates the revolution of an arm and suppresses the contact of the roller with the flywheel. CONSTITUTION:When a pedal 10 is revolved, a chain 14 is sent, and the intermediate sprockets 12 and 13 and a large sprocket 15 revolve, and a sprocket 16 revolves to revolve a flywheel 9. The revolution of the flywheel 9 is transmitted to the roller 27 of a load device 24, and since a load is applied, and an arm 33 which can turn around a rotary shaft 34 is applied with a pressure by a spring 35, the arm 33 is applied with a stable loading action, following to the longitudinal vibration of the flywheel 9. When use is suspended in this state, the contact part between an elastic band 23 and the roller 27 is continuously applied with a pressing force by the spring 35, and when a lever 39 is turned forwardly, a rod 37 shifts downward, and the arm 33 turns downward, and the roller 27 of the load device 24 is separated from the elastic band 23 of the flywheel 9. Therefore, the generation of a pressed trace by the roller can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a stationary bicycle-type health device that operates by operating a handle and pedals and rotating a flywheel.
In particular, it relates to a load control mechanism for a flywheel.

Conventional Technology In a health device that rotates a flywheel by operating a pedal, one method of rotating the flywheel while applying a load is to apply a load by bringing a roller with resistance into contact with the outer periphery of the flywheel. was there. In this case, a roller was pressed against an elastic contact surface in order to provide a soft feel and prevent slippage.

Problems to be Solved by the Invention However, since the elastic contact surface is compressed by the rollers, if left for a long period of time, a pressure path will occur, and if the flywheel is rotated in this state, each time the roller passes through the pressure path, an abnormality will occur. It caused a noise and was a problem in use until the pressure path was restored to its original state.

Means for Solving the Problems The present invention is provided with a mechanism for releasing the rollers forming the load section from contact with the flywheel. Specifically, an arm for holding the load section is rotatably supported on a frame. A spring is provided that applies rotational force to the arm to urge the roller in pressure contact with the flywheel, and a restrictor is further provided that restricts the rotation of the arm and prevents the roller from coming into contact with the flywheel.

During long-term storage of the functional health device, if the above-mentioned restrictor is used to prevent the rollers from coming into contact with the flywheel, pressure paths will not occur in the elastic body of the flywheel. Furthermore, when in use, the load is released and light exercise is possible by using only the flywheel.

Embodiment FIG. 1 shows a health device of the present invention. Note that in this figure, exterior members such as a chain case are omitted.

The frame 1 includes a square lower vibe 2, vertical pipes 3, 4. E5, and side plates 6 fixed to both sides of these vertical pipes.

The side plate 6 supports a pedal shaft 7 and an intermediate shaft 8 in holes provided at the rear and middle portions, respectively, and further supports a rotating shaft of a flywheel 90 in a notch provided at the tip.

A pedal crank 11, which pivotally supports a pedal 10, is fixed to both ends of the pedal shaft 7. The pedal shaft 7 and the intermediate shaft 8 are each made of one inner shaft (12)
．． 13, a chain 14 is applied to these, and the rotation of the pedal shaft 7 is transmitted to the intermediate shaft 8. Note that since the medium tin rocket 13 is coupled to the shaft 8 via the = direction clutch, only the normal rotation of the pedal shaft 7 (in the direction of arrow a in the figure) is transmitted to the intermediate shaft 8. The intermediate shaft 8 further fixes a large tin rocket 16, and a chain is applied to the large tin rocket 15 and the small tin rocket 16 of the flywheel 9, so that the rotation of the intermediate shaft 8 is transmitted to the flywheel 7. It looks like this.

A pair of handlebars 18 are pivotally supported on the front part of the frame 1 so as to be able to swing back and forth, and 07 doors 2o are rotatably attached above the pivot supports 19, respectively. On the other hand, a pair of cranks 21 extending in opposite directions are provided at both ends of the intermediate shaft 8.
The rear ends of 0 are rotatably attached to cranks 21, respectively.

As shown in FIG. 2, the flywheel 9 has a pair of metal discs 22 which are joined together with a weight piece (not shown) sandwiched between them, and an elastic band 23 made of rubber or the like is attached to the outer periphery. They are constructed by fitting together.

The elastic band 23 has a T-shaped cross section and is closely fitted to the outer periphery of the side plate 22.

24 is a load device, which is a so-called eddy current brake.

A roller 27 is pivotally supported in the housing 26 by a bearing 26, and a small flywheel 28 is attached to one side of the shaft, and a metal plate 29 is attached to the other side.

30 is a cover that covers the metal plate 29;
It is formed from the body, and a plurality of magnets 31 are fixed inside,
attached to the housing. This load device 24 is fixed to the arm 33 by screws 32. Arm 3
3 has a rear end pivoted to the lower part of the pipe 2 by a shaft 34,
The roller 27 is urged upward by a spring 36 whose one end is attached to the side plate 6, and the roller 27 is pressed against the elastic body 23 on the outer periphery of the flywheel 9. A ring-shaped bush 36 is attached to the rear end of the arm 33.
are fitted, and a rod 37 passes through the center.

The material of the bushing 36 is rubber, and the diameter of the hole and the diameter of the rod 37 are sufficiently small, but even if they come into contact, no vibration noise will be generated.

A push fitting 38 is threaded onto the arm 33 side of the rod 37 . The other end is rotatably caulked to a lever 39. The l/bar 39 is rotatably fixed to a fixture 43 with a stepped screw 40 and a flange nut 41 via a corrugated washer 42. Reference numeral 43b is a contact surface of the lever 39, and when the lever 3g is in contact with the rod 37, the angle α formed by the rod 37 and the lever 39 is smaller than 1800.

44 is an upper pipe to which a meter spring (v46) and a meter 46 are fixed. The upper pipe 44 is fixed using a threaded portion 48a of a U-shaped metal fitting 48 fixed to the vertical pipe 4 at a welded portion 47, as shown in FIG. 48b is
This is a threaded portion for fixing a knob 49 for preventing rotation of the flywheel. The fixing metal fitting 43 has a bent end surface 43a along the upper pipe 44, and is screwed to the metal fitting 48 in the upper vibe 44 using a pin 6o as a guide.

61 is a saddle, and 52 is a foot. 63 is a load adjustment lever. 54 is a chain case.

Next, this operation will be explained.

When the pedal 1o is rotated, the chain 714 is sent, and when the pedal is rotated in the forward direction, the middle sprocket (12.13) and the large sprocket 1 are sent.
5 rotates, the sprocket 16 connected to the large sprocket 16 and the chain 717 rotates, and the flywheel 9 rotates. On the other hand, the left and right handlebars 18, which are connected to the link mechanism of the intermediate shaft 8 and the crank 20, are
It alternately swings back and forth in relation to the movement of L'10.

The rotation of the flywheel 9 is caused by the load device 24 that is in pressure contact with the flywheel 9.
The load is applied to the roller 27. The load utilizes the resistance caused by the rotation of the metal plate 29 within the magnetic field formed by the magnet 31. Rotating axis 3
Since the arm 33, which is rotatable around 4, is pressed by the spring 36, it also follows the vertical vibration of the flywheel 9.
There is no slippage and stable load action is achieved. At this time, the rod 3a is pressed against the pusher fitting 3 with the lever 39 in the fallen position.
8 and the bushing 38, there is a gap between the arm 3 and the bushing 38.
3 has no effect. Even in a floating state, the tip portion does not come off because it passes through the inside of the bushing 36.

If use is stopped in this state, a compressive force is continuously applied by the spring 36 to the contact portion between the elastic band 23 and the roller 27, causing deformation of the elastic band 23. When the lever 39 is rotated forward, the rod 37 moves downward, the pusher 38 presses the bushing 36, and the arm 33 rotates downward.
Roller 27 of load device 24 fixed to arm 33
is separated from the elastic band 23 of the flywheel 9. The pressing amount can be easily adjusted by screwing the end of the rod 37 into an arbitrary position and tightening and fixing the two press fittings together.

The rod 37 has the force of arrow C to return to the opposite direction due to the reaction force of the spring 36, but the lever 39 does not reach the contact surface 43b.
When rotated, as shown in the vector diagram in Figure 7,
Since the angle α formed by the rod 37 and the lever 39 is smaller than 18o0, the resultant force of the return deer b and this reaction force C is 1) Wi4
3 On the b side, the lever 39 is stabilized in this position using the force of the spring 350. These rod 37, push metal fitting 38, lever 39, and fixing metal fitting 43 constitute a limiter.

Effect of the invention The present invention provides the following effects.

0) The load contact part of the flywheel is rotated by a roller, which provides low noise and smooth feel, and prevents pressure paths caused by rollers during long-term storage.

(Management) The restrictor allows the load to be released, allowing for light exercise and thus allowing for load selection.

(3) The operating lever of the restrictor is provided on the upper pipe, and the rotation of the lever can be operated with one hand.

[Brief explanation of the drawing]

Fig. 1 is a side view showing an embodiment of the present invention, Fig. 2 is a vertical sectional view of the load section, Fig. 3 is a perspective view showing the vicinity of a part of the lever, and Fig. 4 is a side view showing an embodiment of the present invention.
The figure is a perspective view showing the state in which the arm is pressed with the pusher fitting.
The figure is a side view showing the pusher in a floating state, Figure 6 is a perspective view of the pipe joint, Figure 7 is a partial side view showing the operation of the lever, and Figure 8 is a sectional view taken along line A-A in Figure 7. , FIG. 9 is a plan view of the health device, and FIG. 10 is a perspective view of the health device. 1...Frame, 10...Pedal, 2
3... Elastic band, 9... Flywheel, 27
...Roller, 24...Load part, 46.
...Meter, 44...Upper pipe, 33.
...Arm, 35...Bah, 39...
...Lever 43...Fixing bracket, 3A...
...Rod, 38...Push metal fitting. Name of agent: Patent attorney Shigetaka Awano and 1 other person q-
12j Table z3- Tile I Main band - Loading device 37- Rod 39... Lever- Fig. 6, 33-7-Member 37-°-Rod, 38--Evaluation tool

Claims (1)

[Claims] It has a saddle supported by a frame, a pedal, a flywheel having an elastic band around its outer periphery, which rotates when the pedal is operated, and a roller that comes into contact with the outer periphery of the flywheel, and a load section that applies resistance to the flywheel, and a meter are fixed. In a stationary health device equipped with an upper pipe that forms part of a frame, an arm that holds the load section is rotatably supported on the frame, and a rotational force is applied to the arm to press the roller against the flywheel. A spring that biases the arm in the direction of A load control mechanism for a health device characterized by comprising a rod that interlocks with rotation and a push metal fitting that comes into contact with an arm at the tip of the rod.