JPH0530446Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention relates to a stationary bicycle-type health device that exercises by applying a load to the pedals and rotating the flywheel, and in particular relates to the rotary load structure of the flywheel used therein. It is.

Conventional technology In the case of a pedal-type health device, in order to obtain smooth rotation, a flywheel with inertial weight,
Must be constantly loaded.

Conventionally, when this flywheel was made into a cast product, it was unnecessarily heavy and had to be cut to improve the precision of the contact surface of the pads, which caused problems in terms of marketability and manufacturability, so it was improved to a pressed hollow product. . However, even in this case, there were various problems. A conventional example will be explained below with reference to FIG. Figure 4 shows flywheel 2
0 is shown. 21 is a side plate, 22 is a front hub, 23 is a rivet, 24 is a weight piece, and 25 is a pad having a load structure similar to that of a caliper type brake equipped on a normal bicycle.

The problem that the idea aims to solve Such a structure has the following problems.

(1) The side plate outward from the studs 4 is cantilevered, so that it is easily vibrated by contact with the pad 6, causing abnormal noise.

(2) External forces are easily applied to the outer periphery of the flywheel, and the cantilevered structure is easily deformed. Therefore, the change in pad pressure of the caliper structure increases, the rotational force during one rotation changes, and the pedal feel deteriorates.

Means for Solving the Problems The flywheel of the present invention has disc-shaped left and right side plates,
A flat weight piece fixed to the side plate by being sandwiched between the left and right side plates arranged at multiple locations on the outer peripheral side of the side plate, preferably four locations, and a rotating shaft coupled to the rotation center of the side plate. The pad is configured to abut on a section where the dimension between the left and right side plates between the rotating shaft coupling portion and the weight piece fixing portion is stable.

Function: Changes in the rotational resistance of a manually driven flywheel reflect on the quality of the feeling, but the rotation can be balanced by adjusting the weight piece, and the outer periphery and weight piece, which are easily affected by external forces, can be balanced. Avoiding the fixing part that is affected by thickness variations, the pad is brought into contact with the hollow middle part, and the pad is brought into contact with the side plate while causing elastic deformation with a high pressing pressure considering the inertial weight. Therefore, there is less resistance change during rotation,
The flywheel rotates with a well-structured feeling.

Embodiment Hereinafter, an embodiment of the present invention will be described based on the drawings.

FIG. 1 is a side view of the health container. 1 is a saddle, 2 is a pedal and a pedal flap, 3 is a frame, 4 is a handle, 5 is a chain case with a built-in chain, 6 is a flywheel, and 7 is its rotating shaft. Reference numeral 8 denotes a U-shaped arch that is fastened together with the rotating shaft 7, and rotatably supports a lever 10 that presses the pad 9. The flywheel 6 has a left-right alignment structure, and a fixing screw 11 fastens together a weight piece 12 (not shown). A user sits on a saddle 1, holds a handle 4, and rotates a pedal 2.
At this time, the flywheel 6 also rotates, but the rotational resistance is adjusted by the pad 9. 13 is wire, 1
Reference numeral 4 denotes an adjustment fitting, and 15 a mounting plate for instruments including the adjustment fitting 14.

Figure 2 shows details of the flywheel rotation load structure.
Reference numeral 16 denotes a side plate of the flywheel 6, which is joined to the left and right by four fixing screws 11' on the rotating shaft side and eight fixing screws 11 holding weight pieces 12 arranged at four places on the inner and outer periphery of the flywheel. Pad 9 is pushing the hollow part in the middle. The pad 9 is pressed against the protrusion 10a of the lever 10. The lever 10 is rotatably connected to the arch 8 by a shaft 10c, and
It receives the force of the wire 13 at 0b and rotates inward as shown by the arrow. 13b is an inner wire within the wire 13, which transmits the attractive force from the adjustment fitting 15. Therefore, the force is amplified and transmitted to the pad 9 on the principle of leverage, and is strongly pressed against the side plate 16.

The effects of the above configuration will be explained below. When considering the load structure of health equipment, it is better to add resistance with as little fluctuation as possible to improve the usability, and the inertial weight of the flywheel has a large influence. In the present invention, in order to enhance the inertia effect without increasing the overall weight, the weight piece 12 is fixed near the outer periphery of the side plate 16 with fixing screws 11. Further, when adjusting the load resistance, the weight piece 12 may be replaced to change the inertia weight, but the adjustment is normally made by the pressing force of the pad 9. At this time, since the pad is pressing the inner periphery rather than the outer periphery, it is not susceptible to vibration or deformation, which was a problem when pressing the outer periphery, and a stable contact state can be maintained. In addition, the pressing force of the pad 9 is greater on the inner periphery than on the outer periphery, and combined with the fact that the left and right side plates 16 are hollow, the pad 9
The side plates 16 are easy to conform to each other, and slight variations in the dimensions between the left and right pads of the flywheel during manufacturing are absorbed by the deflection of the side plates 16, and the rotational resistance of the flywheel becomes uniform.
Provides a reasonable operating feel.

Effects of the invention As described above, according to the invention, the following effects can be obtained.

(1) By arranging weight pieces in multiple places inside the handwheel, the balance is optimized.

(2) Inertia weight can be adjusted by changing the weight piece.

(3) Since the hollow part between the connecting screws of the side plate is pressed, there is little vibration and dimensional change. It also fits easily with the pad, improving the operating feel.

[Brief explanation of the drawing]

Fig. 1 is a side view of a health device that employs the rotary load structure of the flywheel of the present invention, Fig. 2 is a cross-sectional view of the main part near the flywheel, Fig. 3 is a side view showing the flywheel in half, FIG. 4 is a sectional view of the main part near a conventional flywheel. 6... Flywheel, 7... Rotating shaft, 9... Pad, 10... Lever, 11... Fixing screw, 12...
... Weight piece, 16... Side plate.

Claims (1)

[Scope of utility model registration request] Disk-shaped left and right side plates, flat plate-shaped weight pieces arranged at multiple locations on the outer circumferential side of the side plates, sandwiched between the left and right side plates and fixed to the side plates, and connected to the rotation center of the side plates. a flywheel comprising a rotary shaft, and a pad for controlling rotational resistance of the flywheel,
A loading mechanism for a health machine, characterized in that the pad is brought into contact with a side plate between a weight piece fixing part and a rotation center part of the flywheel.