JPS58217843A - Fly wheel - Google Patents

Abstract

PURPOSE:To wrap a fly wheel body and spokes with a binding yarn formed of the same materials as the fly wheel and spokes to be united into one body so as to firmly fix both members to each other. CONSTITUTION:A ring-shaped fiber plastics fly wheel body 3 and a discoid spokes 4 formed of the same material as the fly wheel are united into one body with adhesives, and further the spokes 4 are united into one body by a rotor hub 2 secured to a rotary shaft 1. A fiber plastics binding yarn 5 is stretched from the rotor hub 2 around the outside of the fly wheel body 3 to go half round the rotor hub 2 and sequentially return in close vicinity to each other, so that the yarn binds the total periphery of the fly wheel body 3 to unit the fly wheel body and the spokes into one body.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a flywheel that stores energy as continuous rotation energy of a rotating body.

[Technical background of the invention]

The flywheel, which stores energy as rotational energy in a rotating body, can store more energy if the rotating body is made of a material with a higher yield strength per density. can store more energy per unit weight.

Fiber plastics include, for example, a combination of carbon fiber and epoxy resin, and have a tensile strength of 180 to 210.
/-, a high value, and the density is 1.6 x 10-'y4
/d, so the energy density is more than 10 times that of ordinary steel. On the other hand, fiber plastics are (1) more expensive than iron-based materials; (2) The strength in the fiber direction is low, but the strength in the direction in which the fibers are stacked is weak, and the strength in the fiber direction is high. It is as follows. (8: Since it is made by winding fibers, it is not possible to create complicated shapes. (4) Shape modification by machining C2 cuts the fibers, so there are 11 qualities such as reducing mechanical strength.

Figures 1 and 2 show conventional flywheels, and Figure 1 shows a rotor hub (1) attached to the rotating shaft (1).
282 Artificial fibers and synthetic resin are wrapped around each other and hardened to form a disc-shaped fiber plastic flywheel body (separately formed; Figure 2 shows a rotor hub (2) fixed to a rotating shaft (1)). A ring-shaped fiber plastic flywheel body (8) is formed by forming spokes (4) on the wheels and then wrapping them around artificial fibers and synthetic resin to form a hardened ring-shaped fiber plastic flywheel body (8). The inner diameter is 0.7 of the outer diameter.
When multiplied by 5, the weight of the flywheel body (8) in Fig. 2 is 1 d and 0.438. GD2 is 0.684, and the energy storage increase per heavy lid is approximately 1.56 times, and from the viewpoint of price, the one shown in Figure 2 is preferable.

[Highlights of background technology]

However, the fiber plastic flywheel body (8) has an outer circumferential speed of 800 m/s or more (2), so the inner circumferential speed also exceeds 600 m/s, and the spokes (4) are weak in strength if they are made of ordinary metal. The centrifugal force of 4) had to be carried by the flywheel body (81), and special materials had to be used.Furthermore, due to the difference in elongation due to stress, the flywheel body (8) and spokes (4) had to be It is difficult to keep the speed close to 78 in any rotational speed, and torque transmission is barely possible, and there is a possibility that vibration may change from the contact surface between the flywheel body and the spokes. There were drawbacks.

[Purpose of the invention]

The present invention was made in view of the above-mentioned drawbacks, and an object of the present invention is to provide a flywheel in which the flywheel main body and the spokes are firmly fixed and integrated, thereby suppressing the unbalance between torque transmission and the rotating body. purpose.

[Summary of the invention]

That is, the spokes are made of the same fiber plastic material as the flywheel body, making them rigid, and the flywheel body and spokes are connected to each other.

It is wrapped and integrated with a fiber plastic binding thread made of the same material as the eel body.

[Embodiments of the invention]

An embodiment of the present invention shown in the drawings will be described below. In Figures 3 and 4, the flywheel body (8)
Spoke (4) is a ring-shaped fiber plastic made by wrapping artificial fibers and synthetic resin in the circumferential direction and hardening them.
is a disk-shaped fiber plastic formed by wrapping the same material in the same direction and curing it, and the spokes (4) are made flush with the side surface of the flywheel body (8) and integrated with adhesive 5. The C varnish bore (4) is longer in the axial direction than the flywheel body (8) and is integrated with the rotor hub (2) to which the rotating shaft (1) C is fixed using adhesive. Furthermore, a tying string (5) made of artificial fiber and synthetic resin is used to connect the outside of the flywheel body (8) from a of the rotor hub (2) to the outside of the flywheel body (8).
c, go half way around d of the rotor hub (2), and go from a to 4. on the outside of the flywheel body (8). CI-adjacent 4',
Pass through c' and go half way around d of Rotanobu (2), and similarly I:
Sequentially, shift from c' and remove the entire flywheel body (8
) are moved radially around the entire circumference and are tied and integrated.

Next, the effect will be explained. By integrating the flywheel body (8) and the spokes (4), torque is generated by the mutual frictional force and integrity of the binding string (5) that binds the flywheel body (8+) and the spokes (4). The floating of the flywheel main body (8) and spokes (4) due to centrifugal force can be maintained together with the tying string (5).

Due to this effect, there is no vibration change, and high reliability can be maintained even without the use of special spokes.

Figures 5, 6, and 7 show other embodiments, and in Figure 5, the spokes (4) and the tying string (5) are not in direct contact with each other and are not integrated, but the rotor hub ( 2), spoke (
4), and the flywheel body (8) are integrated in this order. In FIG. 6, a plurality of protrusions 5 (6) are provided on the rotor hub (2) to prevent the tying string (5) from slipping. Figure 7 shows a spoke (5) on the rotor hub (2) side extending in the axial direction so that the binding thread (5) comes into positive contact as shown at -9f. As described above, according to the present invention (2), in a flywheel, a ring-shaped flywheel body made of fiber plastic, a disc-shaped spoke, and a rotor hub are arranged, and the flywheel body and the rotor hub are placed half around the rotor hub and close to each other. Since fiber plastic binding strings are wrapped radially and integrated, the flywheel body and spokes do not float up due to centrifugal force, and the binding strings can maintain their integrity, resulting in no vibration change and reliability. This is an excellent effect that can increase the

[Brief explanation of drawings]

FIG. M1 and FIG. 2 are longitudinal sectional views showing a conventional flywheel, respectively, and FIG. 3 is a #! showing an embodiment of the flywheel of the present invention. Cross-sectional view, Figure 4 is a plan view, Figures 5 and 6 are
This figure and FIG. 7 are longitudinal cross-sectional views showing other embodiments, respectively. (1) - Rotating shaft (2) Rotor hub (81) Flywheel body (4) Spokes (5) Tie thread agent Patent attorney Inoue - Male

Claims (1)

[Scope of Claims] 1. A ring-shaped 7-life wheel body made of fiber plastic, disk-shaped spokes made of the same material fixed to the inside of this flywheel body, and said flywheel body with two spokes attached to each other; The rotor hub side, which is made of the same material and is fixed to the rotating shaft C2, is made longer in the axial direction C2, and the rotor hub and the flywheel body are connected radially C''' while the rotor hub is partially restrained, and the same material is fixed. 2. The flywheel according to claim 1, characterized in that the disc spokes are flush with the side surface of the flywheel and are integrally sealed with the binding threads. 3. The flywheel according to claim 1, wherein the disc spokes are lower than the side surfaces of the flywheel, and the rotor hub side of the disc spokes is higher than the side surfaces of the flywheel.