JPH04307157A - Rotary servo unit and high performance electric rotary machine - Google Patents

Abstract

PURPOSE:To provide a speed servo unit that is able to amplify the extent of input and a high performance electric rotary machine. CONSTITUTION:A rotary servo unit and an electric rotary machine both make a large diametral eccentric servo driving gear 22 engage with a small diametral driving gear 21 being driven by an input shaft 15b, connecting the eccentric servo driving gear to a planetary gear 28 of a planetary gear drive, through which torque of the driving gear is amplified, transmitting it to the planetary gear, and the amplified output is made so as to be taken out of the output side of the planetary gear functioning as a driven part.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric rotating machine, and more particularly to an electric rotating machine equipped with a rotary booster.

0002

[Prior Art] Conventional electric rotating machines have low efficiency;
Energy consumption was large.

0003

SUMMARY OF THE INVENTION An object of the present invention is to provide a rotary booster and a highly efficient electric rotating machine equipped with the same.

0004

[Means for Solving the Problems] A rotary booster and an electric rotating machine of the present invention are comprised of a drive part equipped with a rotary boost drive mechanism and a driven part equipped with a planetary mechanism driven by the drive part. , the rotational boost drive mechanism includes a small-diameter drive gear and a large-diameter eccentric boost drive gear that engages with the drive gear and revolves around the axis of the driven part while rotating on its own axis, The mechanism includes a sun gear that is coaxial with the drive gear, an internal gear that has a larger diameter than the sun gear, a planet gear that rotates integrally with the eccentric boost drive gear, a carrier that supports the planet gear, and the internal gear. A balance weight supported by the end of the carrier on the same plane.

[0005]

[Operation] The rotational booster of the present invention amplifies the input torque transmitted to the small-diameter drive gear via the eccentric booster drive gear that has a larger diameter than the drive gear, and transfers this amplified torque to the planetary gear of the planetary mechanism. The increased output is transmitted to the driven part.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the rotary booster according to the present invention will be described below with reference to the drawings. In FIG. 1, a rotary booster 15 of the present invention is housed in a housing 15a, and includes a rotary booster drive mechanism 19 that functions as a drive unit and is coaxially arranged, and is connected to the rotary booster drive mechanism 19. , a planetary mechanism 20 functioning as a driven part
Equipped with.

[0007] The rotation booster drive mechanism 19 has a housing 15a.
a drive gear 21 driven by an input shaft 15b rotatably supported by the drive gear 21; and an eccentric booster drive gear that eccentrically engages with the drive gear 21 and revolves around the rotation axis of the drive gear 20. 22.

The planetary mechanism 20 includes a sun gear 24 and an internal gear 26 that are concentric with the drive gear 21, and further rotates integrally with the eccentric boost drive gear 22 of the rotation boost drive mechanism 19. A plurality of planetary gears 28 are provided which engage with the planetary gears 28. The plurality of planetary gears 28 are supported by a carrier 30, and the carrier 30 further rotatably supports the eccentric booster drive gear 22 at one end thereof. The balance weight 32 is attached to the carrier 3 in order to absorb vibrations caused by the rotational movement of the eccentric booster drive gear 22.
0 extends outside the outer periphery of the internal gear 26 within the same plane as the eccentric booster drive gear 22, and is supported by shafts 32a, 32b and other suitable fixing means. In the embodiment of FIG. 2, the internal gear 26 is fixed and the amplified output is transmitted to the sun gear 24.
is taken out from the driven shaft 15c. A lubricant 34 is contained in the housing 15, and at least a portion of the eccentric booster drive gear 22 is in contact with this lubricant.

FIG. 2 shows a basic principle diagram for explaining the operation of the rotary booster 15 shown in FIG. There is.

In FIGS. 1 and 2, a small diameter drive gear 21
When driven by the input shaft 15b, the large-diameter eccentric booster drive gear 22 revolves around the axis of the driven shaft 15c while rotating. At this time, since the planet gear 28 is integrally connected to the eccentric boost drive gear 22, the planet gear 28 is rotated by the eccentric boost drive gear 22 with a torque larger than the torque of the small diameter drive gear 21. This increased torque is transmitted to the sun gear 24, and the driven shaft 15c of the sun gear 24 is
transmits increased power to

In particular, in FIG. 2, the internal gear 2
6 is fixed and the carrier 30 is rotated one rotation counterclockwise, the rotational speed and torque of each element will be considered. The number of teeth of the sun gear 24, planet gear 28, internal gear 26, eccentric boost drive gear 51, and drive gear 21, respectively.

0012

[Math. 1] Z1=12, Z2=24, Z3=60, Z4=
51, Z5=20, and the rotational speed of sun gear 24, planet gear 28, and carrier 30 are respectively

[0013]

[Outside 1] n1, n2, n3 shall be.

[0014]

[Math. 2] Therefore, sun gear 24 rotates counterclockwise 6 times, and planet gear 2
8 rotates 1.5 rotations clockwise.

When the planet gear 28 rotates 1.5 rotations, the eccentric booster drive gear 22 also rotates 1.5 rotations. When the eccentric booster drive gear 22 rotates once, the rotation speed of the drive gear 21

0
016]

[Outside 2] n4 is obtained from the following equation.

[0017]

[Math 3]

The planetary gear 28 and the eccentric booster drive gear 22 are 1
．． Rotation speed of drive gear 21 when rotating 5 times

[0019]

[Outside 3] n5 is calculated by the following formula

[0020]

[Equation 4] n5 = 3.4 rotations x 1.5 rotations = 5.1 rotations Therefore, when the drive gear 21 makes one rotation, the sun gear 2
4 rotation speed

[0021]

[Outside 4] n1' is calculated by the following formula

[0022]

[Equation 5] That is, when the drive gear 21 rotates once, the sun gear 2
4 rotates 1.18 times.

Assume now that the drive gear is rotated with a torque of 15 kg·cm. At this time, the eccentric boost drive gear 22
, the radius of the planet gear 28, sun gear 24 and drive gear 21 is

[0024]

[Math. 6] R1=5.1cm, R2=2.4cm, R3=
1.2cm, R4=1.5cm, on the outer periphery of the planetary gear 28

[0025]

A force of [Equation 7] acts. Since this force P2 acts on the sun gear 24, the torque of the sun gear 24 is

[0026]

[Outer 5] Ts is calculated by the following formula

[0027]

[Math. 8] Ts=P2×R3=21.25kg×1.2c
m=25.5kg・cm

Power when the drive gear 21 rotates at 1500 revolutions per minute with a torque of 15 kg cm

[0029]

[Outer 6] M1 is calculated using the following formula.

[0030]

[Math. 9]

[0031] At this time, the sun gear weighs 2.55 kg/cm.
of torque per minute.

[0032]

[Math. 10] 1500rpm×1.18=1770rpm
The power in this case is

[0033]

[Outer 7] M2 is calculated using the following formula.

[0034]

[Math. 11] Therefore, the output amplification factor

[0035]

[Outer 8] S is calculated by the following formula

[0036]

[Math. 12]

3 and 4 show an embodiment in which the rotary booster of the present invention is applied to an electric rotating machine. In FIG. 3, the electric rotating machine is composed of an electric motor 40, and in FIG. 4, the electric rotating machine is composed of a generator. An example configured with 50 is shown below. In FIG. 3, the electric motor 40 includes a stator 40a and a rotor 40b, and the input shaft 15b of the rotation booster 15 serves as the rotation axis of the rotor 40b. In this configuration, the output of the rotor 40b is transmitted to the drive gear via the input shaft 15b, and then the amplified output as described above is taken out from the output shaft 15c. The housing 40c of the electric motor 40 is connected to the housing of the rotary booster 15, and the radial wall 15d of the housing 15a also serves as the radial wall of the electric motor 40. In FIG. 4, the generator 50 has a stator 50a
and a rotor 50b, and the output shaft 15c of the rotation booster 15 serves as the rotation axis of the rotor 50b. generator 5
0 includes a housing 50c concentrically connected to the housing 15a of the rotary booster 15. Housing 15a
The radial wall 15e of the housing 5 of the generator 50
It also serves as a 0C radial wall. In this configuration, the power transmitted from the prime mover to the drive gear 21 via the input shaft 15b drives the rotor 50b with amplified power as described above, so that the performance of the generator 50 is significantly improved.

[0038]

As is clear from the above, according to the present invention, a rotary booster suitable for mass production at low cost and a high speed We can provide you with performance electric rotating machines. In the embodiment, each rotating element and the fixed element are explained as being composed of gears, but it is clear that the rotating elements such as rollers may be used instead of gears. Note that the driven portion may be combined with a second-stage booster, a planetary mechanism, or a differential gear device.

[Brief explanation of drawings]

FIG. 1 is a preferred embodiment of a rotary booster according to the present invention.

FIG. 2 is a basic principle diagram for explaining the operation of the structure in FIG. 2;

FIG. 3 is an embodiment of a high-performance electric motor of the present invention.

FIG. 4 is an embodiment of a high performance generator of the present invention.

[Explanation of symbols]

15 Rotary booster 19 Rotary boost drive mechanism 20 Planetary mechanism 21 Drive gear 22 Eccentric boost drive gear 24 Sangia 26 Internal gear 28 Planetary gear 30 Career 32 Balance weight 40 Electric motor 50 Generator

Claims (13)

[Claims] 1. A rotary booster drive mechanism, comprising a rotational boost drive mechanism arranged on the same rotational shaft and a planetary mechanism connected to the rotational booster drive mechanism, wherein the rotational booster drive mechanism is arranged on the same rotational shaft. a small-diameter drive gear; and a large-diameter eccentric booster drive gear that engages with the drive gear on the inside and revolves around the same rotation shaft, and the planetary mechanism is arranged on the same rotation shaft. a sun gear disposed in the sun gear, an internal gear concentric with the sun gear, a planetary gear that engages with the sun gear and the internal gear, and is connected to the eccentric booster drive gear and rotates integrally therewith; A carrier that supports a planetary gear and rotatably supports the eccentric booster drive gear, and a balance weight that is supported at an end of the carrier on the same plane as the internal gear. A rotating booster. 2. The rotary booster according to claim 1, wherein the balance weight has a curved surface. 3. The rotary booster according to claim 2, wherein the curved surface is semicircular. 4. The rotary booster according to claim 1, wherein the internal gear is fixed and the amplified output is output from the sun gear. 5. An input shaft, a housing that rotatably supports the input shaft, a drive gear connected to the input shaft within the housing, and a drive gear that engages with the drive gear inside and supports the input shaft. an eccentric booster drive gear that revolves while rotating around the sun gear; a sun gear that is concentric with the input shaft; an output shaft that is connected to the sun gear and rotatably supported by the housing; and an output shaft that is concentric with the sun gear. an internal gear that is fixed to the sun gear and the internal gear, and is integrally connected to the eccentric booster drive gear so that the input torque of the drive gear is amplified. A planetary gear to be driven, a carrier that supports the planetary gear and rotatably supports the eccentric booster drive gear, and a balance weight supported at an end of the carrier on the same plane as the internal gear. A rotary booster characterized by comprising: 6. The rotary booster according to claim 5, wherein the balance weight has a curved surface. 7. The rotary booster according to claim 6, wherein the curved surface is semicircular. 8. The rotational booster according to claim 5 or 6, wherein a lubricant is contained in the housing, and a part of the eccentric booster drive gear is in contact with the lubricant. Device. 9. An input shaft, a housing that rotatably supports the input shaft, a drive gear connected to the input shaft within the housing, and a drive gear that engages with the drive gear inside and supports the input shaft. an eccentric booster drive gear that revolves while rotating around the sun gear; a sun gear that is concentric with the input shaft; an output shaft that is connected to the sun gear and rotatably supported by the housing; and an output shaft that is concentric with the sun gear. an internal gear that is fixed to the sun gear and the internal gear, is integrally connected to the eccentric booster drive gear, and is driven with a torque amplified more than the input torque of the drive gear. An electric rotating machine having a rotary booster with a planetary gear. 10. In claim 9, the electric rotating machine is an electric motor, and the electric motor includes a rotor connected to the drive gear via the input shaft, and an output shaft connected to the sun gear. . An electric motor, wherein the housing rotatably supports the output shaft. 11. The electric motor of claim 10, wherein the electric motor includes a motor housing coupled to the housing. 12. The generator according to claim 10, wherein the electric rotating machine is a generator, and the generator includes a rotor connected to an output side of the planetary mechanism. 13. The generator of claim 12, wherein the generator includes a generator housing coupled to the housing.