JPH0344230B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an energy storage device using a spring, in which a self-winding spring formed by winding a strip spring material around a spool is wound in a reverse forming direction. Energy can be stored whenever energy input occurs, and output can be made with a constant load whenever necessary.In order to avoid depleting energy storage due to output, the frequency and amount of energy for each input and output are calculated in advance from empirical values and automatically calculated. It was developed so that it can be used in various fields as an energy storage device in industry, as long as it is designed to convert the strength and length of a coiled spring.

[Prior art] In general, energy storage devices for rotational energy are chemically considered to be storage batteries, mechanically such as flywheels, etc., but they are difficult to store for long periods of time, have a large volumetric mass, and have a poor conversion rate. There were other drawbacks.
Of course, there are known storage devices using elastic bodies, but with simple coil springs, spiral springs, etc., the power storage capacity is poor because it gradually increases or decreases without averaging even within the limit of elasticity, and when it is output, it outputs instantaneously, making it almost unusable. I can't stand it. A type that uses a constant force and uses a self-winding spring is already known in Patent No. 670476 (door check using a spring) issued by the present applicant, but all conventional types are batch type specifications and winding type. Since the film is being rewound, it is not possible to apply a detent, etc., and it cannot be used as a technique of the present invention.

In other words, in order to make input and output freely possible, the conventional batch type structure is avoided, and if the frequency is within the experience and actual results, input and output can be repeated and used semi-permanently, and the present invention shows the structure of the same type with different input and output terminals. However, both of these are beyond the reach of conventional technology.

[Problem to be solved by the invention] In order to be able to cover the expected energy consumption up to an appropriate time unit with the input energy during that time, it is necessary to increase the amount of stored power and to have the elasticity to always extract the necessary energy consumption with the same output. It is necessary to choose the shape of the body, the input and output should be continuous rather than batch, the force storage structure should have a structure that can secure a space that can adapt to the amount of spring capacity, and the input and output ends should be If it is possible to use the energy storage device only when necessary by making it the same, it can be expected to be used more widely.

[Means for solving the problem] The only spring that can increase the amount of stored power and keep the output the same is a self-winding formed band spring.The advantage of this is that the amount of stored power can be predicted for a unit period and the expected input during that time. It is possible to calculate the amount and convert it in the length direction of the spring, and it is possible to always extract the same force by converting the required output into the force at the end of the spring depending on the thickness, material, and width of the spring. Utilizing this, there is also a basic design in which the input end and output end are different so that input and exit can be made continuously, and by making the input and output ends the same, the drive shaft becomes the power shaft without gear shift etc. It was developed by inserting a differential gear device that can select when power storage is needed and when it is not needed, so that the power storage device does not idle and impede efficiency when it is not needed.

[Function] The former principle design has a self-winding spring that is formed into a self-winding state around the spool with a constant load in response to input, and as the spool rotates planetarily around the periphery of a large diameter wheel and unwinds it. The input and output terminals have different structures, as they overcome the winding force created by the self-winding spring and store it as winding torque in the opposite direction, and consume the follow-up torque of the wheel for output. In order to make the input and output terminals of the latter the same, a self-winding spring is engaged between both side gear shafts of the differential gear, and power is input into the gear case to control the rotation angle of both side gear shafts. Since the power is stored based on the difference, the input end and the output end are the same, and in this case, if the relative positions of both shafts are fixed, the power storage device does not intervene, so both can be easily selected.

[Example] An example will be described with reference to the drawings. A worm 2 and a worm wheel 3 are provided on the shaft of a rotational energy source 1 (for example, a windmill), and a shaft 6 of a wheel 5 is rotatably attached to the shaft 4 of the worm wheel 3. A rotating arm 9 of a spool shaft 8 is attached to the shaft 4 so as to rotate the spool 7 in a planetary manner along the circumference of the wheel 5. A belt-shaped self-winding spring 10 formed into a winding type is wound around the spool 7, and the outer end 11 of the self-winding spring 10 is attached to a part of the periphery of the wheel 5, so that the rotational energy source 1 rotates and the worm 2. When the worm wheel 3, shaft 4, and rotating arm 9 rotate in conjunction with each other, and the spool 7 rotates around the periphery of the wheel 5 in the direction of the arrow, the self-winding spring 10 wound around the spool 7 will rotate as long as the wheel 5 is stopped. , it is structured in such a way that it is rolled out around its periphery. A pawl 12 that stops the wheel 5;
The rotation is fixed by the ratchet teeth 12', and the spool 7 is rotated, but by removing the pawl 12, the stored force is released by rotating the wheel 5 in the direction of the arrow, and the rotation torque of the shaft 6 is increased. Even during the input M, the output M1M
It can be extracted as 2. Also, unlike ordinary elastically wound springs, self-winding springs have elasticity due to the formability at the edge of winding, so they are always uniform in the length direction, and the amount of stored force can be increased in proportion to the length of a strip spring. It is not the ratio of a mainspring.

In addition to a method for storing intermittent input, as a brake for output, turning the wheel 5 in the opposite direction of the arrow acts as a brake, and its force can also be stored in the storage direction.
Figure 1 shows an example where the rotational output is used as a generator and an example where it is used as a billboard, and Figure 2 shows an example where the vibration of the pendulum K is changed to rotation in one direction by the clutch plate 13 and the power is stored. This is what achieved the output.

The one shown in FIGS. 3 and 4 is assembled into a differential gear device, in which a hollow side shaft 17 is attached to a left side gear 16 that meshes with planetary pinion gears 15, 15' bearing on a gear case 14. The right side gear 16' has a through side shaft 1.
7', insert the penetrating side shaft 17' into the hollow side shaft 17 so that it protrudes concentrically to the outside side of the gear case 14 on the side of the hollow side shaft,
A large-diameter spool shaft rotating arm shaft flange 18 and a smaller-diameter wheel flange 19 are attached to each of the spool shafts, and the two are brought close to each other and are wound around a self-winding spring spool 20 attached to the spool shaft rotating arm shaft flange 18. End 2 of self-winding spring 21
2 is attached on the circumference of the wheel flange 19, and the self-winding spring spool 20 is designed to rotate and revolve planetarily around its periphery. A band brake set 2 is further extended from the right side gear shaft 17', which is the mounting shaft of the wheel flange 19.
3 and pulling the lever 24 with a wire 25 allows the rotation of the wheel flange 19 to be stopped freely. Further, a ratchet blade 26 is carved into the spool shaft rotating arm shaft flange 18, and a pawl 27 is provided to prevent rotation.

In order to transmit the rotation of the power source to the gear case 14, a gear case driving gear 28 is attached, a small gear 29 meshing with the gear case driving gear 28, and a large gear 30 are attached to the shaft thereof. Spool shaft rotation shaft flange 18
A balance weight 31 is provided to balance the rotation. To explain this mechanism now, when the large gear 30 is rotated in conjunction with the hub core of a bicycle wheel as a power source, the gear case 14 is rotated by the rotation of the gear case drive gear 28.
The planetary pinion gear 1 attached to this rotates.
Left and right side gears 16, 1 meshing with 5, 15'
6' rotate together and the spool shaft rotating arm shaft flange 18 and wheel flange 19 attached to the shafts 17 and 17' rotate without shifting their relative positions, but the lever 24 of the band brake set 23 is moved by the wire 25. When the wheel flange 19 stops rotating, the self-winding spring spool 20 rotates around its periphery to force the self-winding spring 21 onto the periphery of the wheel flange 19 to overcome the winding force of the spool 20 of the self-winding spring 21. and wrap it around. Band brake set 2 at any time
When the brake 3 is released, the spool shaft rotation arm shaft 1
8 is prevented from reversing by a ratchet blade 26 and pawl 27, so restoration is performed by rotation of the wheel flange 19, which rotates the side gear 16' attached to its shaft and rotates the gear case 14.
In either case, the direction of rotation is the direction of the arrow, which is the large gear 30.
Since the bicycle can always rotate in the same initial direction, for example, the energy from descending a slope can be used as climbing energy to apply rotational torque to the bicycle hub core again in the same direction of travel, making use of stored power.

[Effect of the invention] The energy at the input end is continuously accumulated as a force to wind and stretch the winding edge of the self-winding spring, but the output frequency and input frequency are calculated in advance using empirical values, etc., and the spring length is designed. This way, the power storage will not be depleted due to the output, and there are many applications in which the input and output ends can be made different as shown in FIG. In addition, with this structure, the length of the rotating arm 9 as shown in Fig. 1 can be designed by roughly preparing it in stages depending on the thickness of the self-winding spring, but in some cases, it may be necessary to intervene with a coil spring, etc. If it is made elastic, it can be made for general purpose without any consideration at all, and it can be used by equalizing both the input impact of wind, vibration, gravity, etc. and the intermittency of the input frequency in the spring length direction. Its uses are wide. Also the second
The figure shows a case where you want to store excess energy and return it to the same input shaft by making the input and output terminals the same for input, mechanical power, etc., and this is generally the case for large-capacity devices. There are no such things, and the advantages of its use are great. Since the gear shift involves a spring, it is only possible with a differential gear type.The hollow side shaft of this application can be set concentrically with the through side shaft, and the spool can be planetarily rotated around the wheel flange. This was easy to achieve, and in order to increase the spring capacity as needed, and to avoid extreme spring fatigue due to reverse winding, it would be ideal to have a fairly large wheel diameter. With this structure, we have made it possible and practical, so for example, to improve the efficiency of battery-powered vehicles that can handle slopes, there is no need to change gears, and when switching normally, the wheel flange of this mechanism is freer than the band brake. If this is done, both side gears will be engaged and fixed, and even if the self-winding spring has a large capacity, it will only be an interlocking path and there will be no loss.
Therefore, it can store energy for a long time when needed, and can be used to conserve energy, which is not possible with conventional spiral springs. It is possible to design a spring force suitable for instantaneous output such as a brake, or for storing a large amount of force on a slope. As described above, the present invention can be used semi-permanently without complicated operations for long-term constant output devices if the expected input/output design allows some leeway. For example, it can be used to compensate for climbing losses and braking losses in general vehicles, and in vehicles that do not require return power as shown in Figure 1, it can be used in a wide range of ways, such as utilizing natural energy, such as wind power generation.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the principle of the present invention, Fig. 2 is a perspective view of the principle using a pendulum as the driving force, and Fig. 3 is a part of an example using a differential gear mechanism and intervening with a self-winding spring. FIG. 4 is a partially cutaway side view. 1... Rotating energy source, 2... Worm, 3
... Worm wheel, 4 ... Axis, 5 ... Wheel, 6 ... Shaft section, 7 ... Spool, 8 ... Spool shaft, 9 ... Rotating arm, 10 ... Self-winding spring, 11
...outer end, 12...stop pawl, 12'...ratchet tooth, 13...clutch disc, 14...gear case, 15, 15'...planetary pinion gear, 1
6, 16'... Left and right side gear, 17... Hollow side shaft, 17'... Penetrating side shaft, 18... Spool shaft rotating arm shaft flange, 19... Wheel flange, 20... Self-winding spring spool, 21...
Self-winding spring, 22... end, 23... band brake set, 24... lever, 25... wire, 26... ratchet blade, 27... pawl, 28...
... Gear case drive gear, 29 ... Small gear, 30
...Big gear, 31...Balance weight, K...Pendulum,
M...input, M1, M2...output.

Claims (1)

[Scope of Claims] 1. Unwinding of a band-shaped self-winding spring formed by rotating a spool shaft rotating arm shaft through a worm gear/worm wheel using a rotational energy source and winding it around a spool attached to the rotating arm. The end is fixed on the circumference of the wheel, and as the spool rotates planetarily on the circumference of the wheel by a rotating arm, a self-winding spring is wound around the circumference of the wheel in the reverse forming direction to store input energy. The wheel diameter is large enough to withstand the spring fatigue due to reverse winding due to the frequency of input/output repetition, and the strength is sufficient so that the stored power is not depleted by the output. - An input/output variable energy storage device with a space with a winding thickness that accommodates a self-winding spring of the same length, and a rotating arm length that matches the length. 2 The rotational energy source is interlocked with the gear case of the differential gear device, and the penetrating shaft of the right side gear is inserted into the hollow shaft of the left side gear of the gear case, and the respective shafts are concentrically protruded outside the side of the gear case. A large-diameter spool shaft rotating arm shaft flange and a smaller-diameter wheel flange are attached to the end, and the unwinding end of the band-shaped self-winding spring is formed around the wheel flange in the winding direction. As the spool of the self-winding spring rotates planetarily around the wheel flange by the spool shaft rotating arm shaft flange, the self-winding spring is set to wrap around the wheel flange in the reverse forming direction. The wheel flange can be fixed and released at will using a band brake.
A flexible input/output energy storage device with a reverse rotation prevention mechanism on the spool shaft rotating arm shaft flange.