JPH09149596A - Dynamo - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce rotation torque required at a starting period of time, thereby facilitating starting operation by providing feed torsion for displacing a rotor shaft in the axial direction together with a rotor and at the same time displacing the rotor in the axial direction independent of the rotor shaft by small operation force. SOLUTION: An internal thread part 7a is formed in the inner circumference of the lower part of the through hole of a support plate 7 through which a rotor shaft 6 passes and also an external thread part to constitute a rotor shaft moving means with the internal thread part 7a in the middle part of the rotor shaft 6 is formed. When a rotating wheel 8 is pulled upward and at the same time rotated in one direction by operating a handle 9, the external thread part 6a is screwed into the internal thread part 7a and the rotor shaft 6 is rotated together with a rotor 2 and at the same time pulled up in the axial direction, so that attraction force between the rotor 2 and a stator 1 is lowered. In that state, the rotor shaft 6 is rotated and at the same time made to descend by operating the handle 9. Therefore, the rotation torque of the rotor 2 required at the starting period of time is lowered, so that the rotor 2 may be rotated without giving large rotation torque.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a generator that converts mechanical energy into magnetic energy, which is further converted into electric energy and output.

[0002]

2. Description of the Related Art A generator has a stator and a rotor, one of which is provided with a permanent magnet, and the other of which is provided with an iron core facing the permanent magnet and a coil. There is. Then, when the rotor is rotated, the rotational energy of the rotor is converted into magnetic energy by the relative motion of the magnetic flux of the permanent magnet and the iron core, which is further converted into electric energy and output through the coil.

By the way, between the rotor and the stator,
The magnetic attraction force between the permanent magnets and the iron core acts as a rotational resistance of the rotor, but inertial force is added to the rotor as the rotor rotates during power generation, so a large rotational torque is not applied to the rotor. Both can rotate the rotor.

[0004]

However, since no inertial force is applied to the rotor at the time of starting, the rotational resistance of the rotor becomes larger than that at the time of power generation, and unless a large rotational torque is applied to the rotor, the rotor is not rotated. Could not be rotated and it was difficult to start.

[0005]

In order to solve the above-mentioned problems, the present invention displaces the rotor shaft together with the rotor in the axial direction thereof so that the rotating torque of the rotor required at the time of starting can be reduced and the starting can be facilitated. There is a means to
Means is provided for displacing the rotor in the axial direction of the rotor shaft independently of the rotor shaft with a small operating force so that a large operating force is not required to reduce the rotational torque of the rotor at the time of starting.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION In the generator according to the present invention, in order to improve the starting performance when converting the rotational energy of the rotor into electric energy, the rotor shaft of the rotor is displaced in the axial direction together with the rotor. And a feed screw means for displacing the rotor in the axial direction of the rotor shaft independently of the rotor shaft by using the rotor shaft as a guide.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A generator to which the present invention is applied has a stator 1 and a rotor 2 as shown in FIG. 1, one rotor 2 of which is provided with a plurality of permanent magnets 3 and the other stator 2. 1, a plurality of iron cores 4 are provided so as to face each of the permanent magnets 3, and a coil 5 is wound.
Then, when the rotor 2 is rotated, the rotational energy of the rotor 2 is converted into magnetic energy by the relative motion of the magnetic flux of the permanent magnet 3 and the iron core 4, and this is further converted into electric energy and output through the coil 5. ing.

The stator 1 is located below the rotor 2, each iron core 4 is formed on the upper surface of the stator 1 so as to project at equal intervals around the axis of the rotor 2, and a coil 5 is wound between each iron core 4. .

The rotor 2 has a rotor shaft 6, and the permanent magnets 3 are mounted at equal intervals around the axis of the rotor shaft 6 so as to face the iron cores 4. The rotor shaft 6 is rotatably supported by a support plate 7 located above the rotor 2. At the tip of the rotor shaft 6, a disc-shaped rotary wheel 8 that is in contact with the upper surface of the support plate 7 is coaxially and integrally formed, and the rotor shaft 6 is rotatably supported by the support plate 7 while preventing the rotary wheel 8 from coming off. Has been done. A handle 9 is fixed on the upper surface of the rotary wheel 8 at a position deviated from the axial center portion, and the rotary wheel 8 can be rotated by gripping the handle 9. When the handle 9 is gripped and the rotary wheel 8 is rotated, the rotational force of the rotary wheel 8 is transmitted to the rotor 2 via the rotor shaft 6 and the rotor 2 is rotated.

In this generator, the rotor shaft 6 is axially displaceable together with the rotor 2, and the rotor 2 is displaced in the axial direction of the rotor shaft 6 independently of the rotor shaft 6 by using the rotor shaft 6 as a guide. It is possible.

That is, in order to displace the rotor shaft 6 together with the rotor 2 in the axial direction, a female screw portion 7a is formed on the lower inner circumference of the through hole of the support plate 7 through which the rotor shaft 6 penetrates. At the same time, a male screw portion 6a that constitutes the rotor shaft moving means is formed in the intermediate portion of the rotor shaft 6 with the female screw portion 7a of the support plate 7, and the male screw portion 6a of the rotor shaft 6 is formed as shown in FIG. In a state where the support plate 7 is located below the support plate 7 by being separated from the female screw portion 7a, the rotary wheel 8 is in contact with the upper surface of the support plate 7 so that the rotor shaft 6 prevents the rotary wheel 8 from coming off. It is rotatably supported by.

When the handle 9 is operated to rotate the rotating wheel 8 in one direction while pulling it up, the male screw portion 6a of the rotor shaft 6 is screwed into the female screw portion 7a of the support plate 7,
Due to this screwing, the rotor shaft 6 is pulled up in the axial direction while rotating with the rotor 2. In the state where the male screw portion 6a of the rotor shaft 6 is screwed into the female screw portion 7a of the support plate 7, the rotary wheel 8 separates from the upper surface of the support plate 7 as shown in FIG. The rotor shaft 6 is rotatably supported by the support plate 7 by screwing the screw portion 6 a and the female screw portion 7 a of the support plate 7. When the male screw portion 6a of the rotor shaft 6 is screwed into the female screw portion 7a of the support plate 7, when the handle 9 is operated to rotate the rotary wheel 8 in the other direction, the male screw portion 6a of the rotor shaft 6 The rotor shaft 6 is rotated in the axial direction while rotating together with the rotor 2 by screwing with the female screw portion 7a of the support plate 7, and the male screw portion 6a of the rotor shaft 6 is rotated by the female screw portion 6a of the support plate 7 after a predetermined rotation of the rotor shaft 6. It is located below the support plate 7 apart from the screw portion 7a, the rotary wheel 8 is in contact with the upper surface of the support plate 7, and the rotor shaft 6 is rotatably supported by the support plate 7 while preventing the rotary wheel 8 from coming off. (State of FIG. 1).

As a structure for allowing the rotor 2 to be displaced in the axial direction of the rotor shaft 6 independently of the rotor shaft 6 by using the rotor shaft 6 as a guide, as shown in FIG. A hollow hole 6b is formed in the inner peripheral portion of the male screw portion 6a, and a guide hole 6c communicating with the hollow hole 6b is formed at a plurality of positions in the circumferential direction, which is an intermediate portion in the axial direction and is below the male screw portion 6a. Is formed in a circular shape, and a counterbore hole 8a is formed on the upper surface of the rotating wheel 8 so as to concentrically communicate with the hollow hole 6b of the rotor shaft 6. The rotary wheel 10 is provided in the counterbore 8a.
Are rotatably inserted concentrically, and a bottomed hole 8b for locking the rotary wheel 10 is partially formed on the bottom surface.

A handle 11 for rotating operation projects from the upper surface of the rotary wheel 10, and the rotary wheel 10 can be rotated independently of the rotary wheel 8 by gripping the handle 11. The handle 11 can be inserted into and removed from the bottomed hole 8b by penetrating the rotary wheel 10, and the rotary wheel 10 can be rotated independently of the rotary wheel 8 by being extracted from the bottomed hole 8b and inserted into the bottomed hole 8b. Thus, the rotary wheel 10 is locked to the rotary wheel 8 so that it cannot rotate independently of the rotary wheel 8.

From the lower surface of the rotary wheel 10, a screw shaft 12 coaxially fixed to the rotary wheel 10 protrudes, and this screw shaft 12
The rotational force of the rotary wheel 10 is transmitted to the.
The screw shaft 12 is inserted into the hollow hole 6b of the rotor shaft 6 through the spot facing hole 8a, is partially exposed to the outside of the rotor shaft 6 through the guide hole 6c of the rotor shaft 6, and the screw portion is formed on the exposed portion. 12a is formed. Screw shaft 12
The rotor 2 is screwed through the guide hole 6c of the rotor shaft 6. As shown in FIG. 3, a through hole 2a of the rotor shaft 6 is formed in the rotor 2, and a guide piece 2b that engages with each guide hole 6c of the rotor shaft 6 is formed on the inner periphery of the through hole 2a. The guide piece 2b is engaged with the rotor shaft 6 so as to be co-rotatable and axially displaceable. The male thread portion 12a of the screw shaft 12 is screwed into the distal end of each guide piece 2b, and the male thread portion 12a of the screw shaft 12 is engaged.
And the guide piece 2b of the rotor 2 and the guide hole 6c of the rotor shaft 6.
A female screw portion 2c that constitutes the feed screw means is formed by and.

When the handle 11 is pulled out from the bottomed hole 8b of the rotary wheel 8 and the handle 11 is gripped in this state to rotate the rotary wheel 10 independently of the rotary wheel 8, the rotational force of the rotary wheel 10 is changed. The screw shaft 12 is rotated by being transmitted to the screw shaft 12, and the male screw portion 12a of the screw shaft 12 and the female screw portion 2c of the rotor 2 are screwed together, and the guide piece 2b of the rotor 2 and the guide hole 6c of the rotor shaft 6 are connected. The rotor 2 is engaged with the screw shaft 12
The rotor wheel 6 is displaced in the axial direction of the rotor shaft 6 independently of the rotation of the rotor wheel 6 (see FIG. 4). After that, if the handle 11 is inserted into the bottomed hole 8b of the rotor wheel 8, the rotor wheel 10 rotates. The rotor 2 is locked by the wheel 8 and cannot rotate independently of the rotary wheel 8, and the rotor 2 is fixed to the rotor shaft 6 at an arbitrary position in the axial direction.

According to the above structure, when the handle 9 is operated in the state shown in FIG. 1 to pull up the rotor shaft 6 while rotating the rotor shaft 6 in the axial direction together with the rotor 2, the rotor 2 is moved as shown in FIG. The magnetic attraction force between the rotor 2 and the stator 1 is reduced by separating from the stator 1, and in this state, the handle 9 is operated so that the rotor shaft 6 descends in the axial direction while rotating. If the rotor 2 is started by rotating, the rotational torque of the rotor 2 required at the time of starting is reduced, and the rotor 2 can be rotated without applying a large rotational torque to the rotor 2.

After the start, after the rotor shaft 6 has rotated a predetermined amount, the male screw portion 6a of the rotor shaft 6 and the female screw portion 7a of the support plate 7 are disengaged from each other, and as shown in FIG. Rotates while being supported by the support plate 7 with the rotating wheel 8 as a retaining member, and the rotational energy of the rotor 2 is converted into magnetic energy by the relative movement between the magnetic flux of the permanent magnet 3 and the iron core 4 during the rotation of the rotor 2. , Which is further converted into electric energy and output through the coil 5. At the time of this power generation, the rotor 2 approaches the stator 1 due to the lowering of the rotor shaft 6 as compared with the time of starting, and the rotor 2 and the stator 1
Although the magnetic attraction force between and increases, the inertial force is applied to the rotor 2 at this time, so that the rotor 2 can be rotated without applying a large rotational torque to the rotor 2.

After the power generation is completed, the handle 9 is operated to rotate the rotor shaft 6 together with the rotor 2 and pull up the rotor shaft 6 in the axial direction, so that the rotor 2 is separated from the stator 1 as shown in FIG. It can return to the initial position and can be easily started when restarting.

At the time of starting, the handle 11 is operated prior to the operation of the handle 9 to lower the rotor 2 independently of the rotor shaft 6 along the axial direction of the rotor shaft 6 by operating the handle 11 ( 2), after the completion of power generation, the handle 11 is operated prior to the operation of the handle 9 to operate the rotor 2 with the rotor 6 as a guide.
Independently of, and pulling up along the axial direction of the rotor shaft 6,
The operation force of the handle 9 after the completion of power generation is reduced and the rotor 2
Can be easily returned to the initial position when starting. In other words, even after the power generation is completed, the magnetic attraction force acts between the rotor 2 and the stator 1, and the inertial force that is generated during the power generation is not applied to the rotor 2. Therefore, a large rotational torque must be applied to the handle 9. , The rotor 2 cannot be returned to the initial position at the time of starting. However, at the time of starting, prior to the operation of the handle 9, the handle 11 is operated to lower the rotor 2 in the axial direction of the rotor shaft 6 independently of the rotor shaft 6 by using the rotor shaft 6 as a guide, and after the power generation is completed, the handle 9 is operated. Prior to the operation, the handle 11 is operated to pull up the rotor 2 in the axial direction of the rotor shaft 6 independently of the rotor shaft 6 by using the rotor shaft 6 as a guide. 1, the magnetic attraction force between the rotor 2 and the stator 1 decreases, and the rotor 2 can be easily returned to the initial position at the time of starting without applying a large rotational torque to the operation handle 9. Moreover, at the time of operating the handle 11, the feed screw means constituted by the male screw portion 12a of the screw shaft 12, the female screw portion 2c of the rotor 2, the guide piece 2b of the rotor 2 and the guide hole 6c of the rotor shaft 6 is used. Since the rotor 2 is pulled up along the axial direction of the rotor shaft 6 independently of the rotor shaft 6, the rotor 2 is independent of the rotor shaft 6 in the axial direction of the rotor shaft 6 without applying a large rotational torque to the handle 11. Can be pulled along.

Therefore, the rotational torque of the rotor 2 required at the time of starting can be reduced without requiring a large operating force,
Operability is improved.

[0022]

As described above, in the generator according to the present invention, the rotor shaft moving means for displacing the rotor shaft of the rotor together with the rotor in the axial direction, and the rotor using the rotor shaft as a guide independently of the rotor shaft. Since it has the feed screw means for displacing the shaft in the axial direction, it does not require a large operating force, the rotational torque of the rotor required at the time of starting can be reduced, and the operability is improved.

[Brief description of the drawings]

FIG. 1 is a sectional view of a generator to which the present invention is applied.

FIG. 2 is a cross-sectional view of essential parts showing the structures of a rotor and a rotor shaft.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a sectional view showing a displacement state of a rotor corresponding to FIG.

[Explanation of symbols]

 2 rotor 2b guide piece (feed screw means) 2c female screw portion (feed screw means) 6 rotor shaft 6a male screw portion (rotor shaft moving means) 6c guide hole (feed screw means) 7a female screw portion (rotor shaft moving means) 12a Male thread (Feed screw means)

Claims (1)

[Claims] 1. A generator for converting rotational energy of a rotor into electric energy, the rotor shaft moving means for axially displacing the rotor shaft of the rotor together with the rotor, and the rotor using the rotor shaft as a guide. A generator comprising: a feed screw unit that displaces in the axial direction of the rotor shaft independently of the rotor shaft.