KR20160117888A - Magnetic transmission - Google Patents

Magnetic transmission Download PDF

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Publication number
KR20160117888A
KR20160117888A KR1020150045872A KR20150045872A KR20160117888A KR 20160117888 A KR20160117888 A KR 20160117888A KR 1020150045872 A KR1020150045872 A KR 1020150045872A KR 20150045872 A KR20150045872 A KR 20150045872A KR 20160117888 A KR20160117888 A KR 20160117888A
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South Korea
Prior art keywords
arc
rotor
outer rotor
inner rotor
magnetic
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KR1020150045872A
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Korean (ko)
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KR101701824B1 (en
Inventor
김용재
김찬호
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조선대학교산학협력단
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H49/00—Other gearings
    • F16H49/005—Magnetic gearings with physical contact between gears
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
    • F16H3/089—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears all of the meshing gears being supported by a pair of parallel shafts, one being the input shaft and the other the output shaft, there being no countershaft involved
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
    • H02K49/10—Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
    • H02K49/102—Magnetic gearings, i.e. assembly of gears, linear or rotary, by which motion is magnetically transferred without physical contact

Abstract

The present invention relates to a magnetic transmission, and more specifically, to a magnetic transmission, realizing contactless gear shift through a magnetic gear to transmit power by using magnetic force, having excellent durability due to removal of mechanical friction of gears, and also realizing high efficiency and correct gear shift. According to the present invention, since torque is transmitted by using magnetic force, stability and durability are enhanced due to removal of mechanical friction. Moreover, contactless gear shift through magnetic gears is realized, and high efficiency and correct gear shift are also realized. According to the present invention, the magnetic transmission comprises an input shaft, an output shaft and a magnetic shift gear by each speed.

Description

Magnetic transmission {Magnetic transmission}

The present invention relates to a magnetic transmission, and more particularly, to a non-contact type transmission capable of transmitting a power through a magnetic gear using a magnetic force, which is superior in durability due to mechanical friction removal of gears, The present invention relates to such a magnetic transmission.

Generally, an automatic transmission for an automobile is shifted by using a configuration in which an input from a torque converter is combined with a plurality of clutches, brakes, planetary gear sets, etc., and the TCU converts input, reaction force, Thereby performing the shift.

Among these automatic transmissions, the forward 6-speed transmission includes a first planetary gear set P1 that receives power from the input shaft I to the first ring gear R1, A second planetary gear set P2 to which the ring gear R2 is connected and first to third clutches C1 to C1 for controlling the first and second planetary gear sets P1, , C2 and C3 and first and second brakes B1 and B2.

That is, the shift occurs while the plurality of clutches C1, C2, and C3 and the brakes B1 and B2 are driven and fixed for each angular speed.

The first clutch C1 and the first brake B1 are operated in the first speed and the first brake B1 is released in the second speed and the second brake B2 is operated, .

When shifting to the third speed, the second brake B2 is disengaged and at the same time the second clutch C2 is operated in a state in which the first clutch C1 is operated. When shifting to fourth speed, The second clutch C2 is disengaged and the third clutch C3 is operated.

In order to shift the automatic transmission to the fifth speed, the first clutch C1 is disengaged and the second and third clutches C2 and C3 are operated simultaneously, and the first and second brakes B1 and B2 are released , And if it is the sixth speed, the second clutch C2 is released and the second brake B2 is operated in this state.

That is, the first and second planetary gear sets P1 and P2 are disposed on both sides of the clutches C1, C2, and C3 and the brakes B1 and B2, and then the first and second planetary gear sets P1 and P2 are controlled by clutches and brakes .

Such a conventional automatic transmission uses a planetary gear set and a brake, and thus has problems such as noise generation and durability deterioration due to mechanical friction, as well as problems in high efficiency drive transmission (shift) due to energy loss there was.

Therefore, power transmission (shift) is possible without using a mechanical contact type gear, and development of a new type of highly efficient transmission is required.

[Prior Art Literature]

[Patent Literature]

1. Korean Patent Publication No. 10-2007-0034705, Forward 6-speed automatic transmission

2. Korean Patent Publication No. 10-2015-0012150, vehicle transmission

SUMMARY OF THE INVENTION The present invention is conceived to solve the problems described above, and it is an object of the present invention to provide a non-contact type transmission capable of transmitting a power through a magnetic gear using a magnetic force and having excellent durability due to mechanical friction removal of gears, Thereby providing a shiftable magnetic transmission.

The objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided an engine comprising: an input shaft disposed on a coaxial line so that rotational power of an engine is input; An output shaft disposed parallel to the input shaft; And a variable speed magnetic gear for each gear position selectively connected to the input shaft and the output shaft to selectively transmit rotational power of the engine to the output shaft, wherein the speed change magnetic gear includes an inner rotor ); An outer rotor disposed apart from the inner rotor; And a pole piece module disposed between the inner rotor and the outer rotor and having a plurality of spaced pole pieces for transmitting magnetic flux between the inner rotor and the outer rotor. Magnetic transmission is provided.

In a preferred embodiment, the inner rotor includes a cylindrical inner rotor and a plurality of magnets (hereinafter referred to as inner magnets) radially attached to the outer surface of the inner rotor about a rotation axis, The outer rotor has a cylindrical outer rotor and a plurality of magnets (hereinafter, referred to as 'outer magnets') radially attached to inner surfaces of the outer rotor about a rotation axis.

In a preferred embodiment, the variable speed magnetic gear interrupts the power transmission when the inner rotor or the outer rotor is variablely moved from the pole piece module.

In order to achieve the above object, the present invention also provides an engine control apparatus for an internal combustion engine, comprising: an input shaft disposed on a coaxial line so that rotational power of an engine is input; A first variable speed magnetic gear for each gear stage selectively connected to the input shaft to selectively transmit the rotational power of the engine to the output shaft; An output shaft disposed parallel to the input shaft; And a second variable speed magnetic gear for each gear position selectively connected to the output shaft to selectively transmit rotational power of the engine to the output shaft, wherein the first variable speed magnetic gear is connected to the input shaft A first inner rotor for driving the first inner rotor; A first outer rotor spaced apart from the first inner rotor; And a first pole piece module located between the first inner rotor and the first outer rotor and having a plurality of spaced apart pole pieces for transmitting magnetic flux between the first inner rotor and the first outer rotor; And the second variable speed magnetic gear is connected to the output shaft to drive the second inner rotor; A second outer rotor spaced apart from the second inner rotor; And a second pole piece module located between the second inner rotor and the second outer rotor and having a plurality of spaced apart pole pieces for transmitting magnetic flux between the second inner rotor and the second outer rotor; And a magnetic transmission.

In a preferred embodiment, the first inner rotor and the second inner rotor include a cylindrical inner rotor and a plurality of magnets (hereinafter, referred to as " inner magnets ") that are radially attached to outer surfaces of the inner rotor, (Hereinafter, referred to as an " outer magnet ") that is radially attached to the inner side surface of the outer rotor and about the rotation axis about the rotational axis, and the first outer rotor and the second outer rotor include a cylindrical outer rotor, Quot;).

In a preferred embodiment of the present invention, a first housing rotatably connected to an output end of the input shaft and housing the second variable speed magnetic gear; A second housing rotatably connected to the output shaft and housing the first variable speed magnetic gear together with the first housing; .

In a preferred embodiment, the first outer rotor is mounted on the inner wall of the second housing, and is displaceable on the inner wall of the second housing by the first outer rotor driving means, and the second outer rotor is movable on the inner wall of the first housing And the second inner rotor is mounted on the output shaft and is variablely moved on the output shaft by the second inner rotor driving means.

In a preferred embodiment, the cross-section of each of the pole pieces has a first arc, a second arc having the same center and center angles as the first arc and an inner diameter smaller than the inner diameter of the first arc, And a second figure surrounded by a line connecting one end and each other end of the second call and a third figure having the same position and inner diameter as the second call and the central angle being larger than the central angle of the second call, 3, the center position and the central angle are the same, the inner diameter is the fourth figure which is smaller than the inner diameter of the third call, and the shape in which the second figure surrounded by the line connecting the one end and the other end of the third call and the fourth call And the bisector positions of the second call and the third call are combined so as to overlap with each other.

In a preferred embodiment, the vertical distance (hereinafter, referred to as 'first vertical distance') between the fourth call and the third call is a vertical distance between the fourth call and the first call , &Quot; second vertical distance ") is larger than 13.5% and smaller than 23.5%.

[Equation 1]

Figure pat00001

Where alpha is the first vertical distance and L pr is the second vertical distance.

In a preferred embodiment, the central angle of the fourth arc is a central angle of a virtual arc connecting the first calls of two pole pieces with one pole piece interposed therebetween (hereinafter referred to as a 'reference angle' ) Than 40% and less than 50%.

&Quot; (2) "

Figure pat00002

Where beta is the central angle of the fourth arc and N p is the number of pole pieces.

In a preferred embodiment, a line connecting the first call and the second call in the first figure is a curve concave toward the center of the first figure (hereinafter, referred to as a 'concave curve').

In a preferred embodiment, the length from the bisecting position of the virtual line segment connecting the both ends of the concave curve (hereinafter, referred to as 'first virtual line segment') to the concave curve in the vertical direction (Hereinafter, referred to as " second virtual line segment ") vertically connected to the fourth arc at one end of the concave curve, Is greater than 30% and less than 40% of the length up to a virtual line segment connecting the bisection position of the arc and the bisection position of the fourth line (hereinafter, referred to as 'third virtual line segment').

In a preferred embodiment, the concave length is calculated by the following equation (3).

&Quot; (3) "

Figure pat00003

Where D pi is the inner diameter of the fourth arc, D po is the inner diameter of the first arc, and N p is the number of pole pieces.

The present invention has the following excellent effects.

According to the magnetic transmission of the present invention, torque is transmitted by using a magnetic force, thereby improving stability and durability due to mechanical friction removal.

Further, according to the magnetic transmission of the present invention, it is possible not only to perform a noncontact type transmission through a magnetic gear, but also to achieve high efficiency and accurate shifting.

Further, according to the magnetic transmission of the present invention, the torque transmission is improved and the ripple is reduced, whereby the power transmission rate and the reliability of the shift can be improved.

1 is a view showing a general magnetic transmission,
2 to 4 are views for explaining a magnetic transmission according to an embodiment of the present invention,
FIG. 5 and FIG. 6 are drawings and vertical cross-sectional views illustrating a variable speed magnetic gear of a magnetic transmission according to an embodiment of the present invention,
7 to 11 are views for explaining a magnetic transmission according to another embodiment of the present invention,
12 is a vertical cross-sectional view of a speed change magnetic gear of a magnetic transmission according to another embodiment of the present invention,
13 is a view for explaining a pole piece shape of a speed change magnetic gear according to another embodiment of the present invention,
FIGS. 14 to 16 are diagrams for explaining a variable for determining the shape of a pole piece of a speed change magnetic gear according to another embodiment of the present invention.

Although the terms used in the present invention have been selected as general terms that are widely used at present, there are some terms selected arbitrarily by the applicant in a specific case. In this case, the meaning described or used in the detailed description part of the invention The meaning must be grasped.

Hereinafter, the technical structure of the present invention will be described in detail with reference to preferred embodiments shown in the accompanying drawings.

However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Like reference numerals designate like elements throughout the specification.

FIGS. 2 to 4 are views for explaining a magnetic transmission according to an embodiment of the present invention. FIGS. 5 and 6 are views for explaining a variable speed magnetic gear of a magnetic transmission according to an embodiment of the present invention, to be.

The magnetic transmission of the present invention includes an input shaft disposed on a coaxial line for inputting a rotational power of the engine, an output shaft disposed in parallel with the input shaft, and a variable transmission connected to the input shaft and the output shaft, And a variable speed magnetic gear for selectively shifting and transmitting to the output shaft. The plurality of speed change magnetic gears may be provided for each speed change stage.

Referring to FIGS. 5 and 6, a variable speed magnetic gear 10 applied to a magnetic transmission according to an embodiment of the present invention will be described.

The variable speed magnetic gear 10 includes an inner rotor 11, an outer rotor 12 spaced apart from the inner rotor 11, and a rotor 12 between the inner rotor 11 and the outer rotor 12. [ And a pole piece module (13) spaced apart from the pole piece modules (11, 12).

The inner rotor 11 includes a cylindrical inner rotor 11b and a plurality of magnets 11a radially attached to the outer side of the inner rotor 11b around a rotation axis.

The outer rotor 12 includes a cylindrical outer rotor 12a and a plurality of magnets 12b radially attached to the outer rotor 12a around a rotating shaft.

In the present invention, the speed change magnetic gear 10 is shown as a cylindrical gear type magnetic gear, but it can be manufactured as a disc rotating type, a flat plate linear type, and a cylindrical linear type.

The pole piece module 13 includes a plurality of pole pieces 13a radially equidistantly spaced from a rotation axis and transmits a magnetic flux between the inner rotor 11 and the outer rotor 12. [

The pole piece 13a is also referred to as a magnetic pole piece and serves as a magnetic body to transmit magnetic flux from the outer rotor 12 to the inner rotor 11 or from the inner rotor 11 to the outer rotor 12 .

The magnets of the inner rotor 11 and the outer rotor 12 are arranged such that the magnets having magnetic force in opposite directions to each other (in the direction toward the rotation axis and the direction opposite to the rotation axis) Two magnets with a magnetic force in the direction form a dipole.

The inner rotor 11 and the outer rotor 12 are rotated in opposite directions to each other and are used for deceleration or acceleration depending on which rotor is an input shaft. .

The number of dipoles of the outer rotor 12 and the number of dipoles of the inner rotor 11 are expressed by the following equations Similarly, the number of pole pieces 13a is determined.

[Mathematical expression a]

Figure pat00004

Here, N is the number s, p 1 is a bipolar number, p 2 of the outer rotor 12 of the pole piece (13a) is the number of the bipolar inner rotor (11).

6, the number of poles of the magnet of the outer rotor 12 is 42 poles, the number of dipoles is 21 poles, the number of poles of the magnet of the inner rotor 11 is 4 poles and the number of dipoles is 2 poles, (13a) are 23 poles of the number of poles of the rotor plus 21 poles and two poles.

The gear ratio of the speed change magnetic gear 10 is determined by the ratio of the number of dipoles of the rotors as shown in the following equation (b).

[Mathematical expression b]

Figure pat00005

The speed ratio of the rotors of the speed change magnetic gear 10 is expressed by the following equation (c).

[Mathematical expression c]

Figure pat00006

When the inner rotor 11 or the outer rotor 12 is variablely moved from the pole piece module 13 and the magnetic flux transmission is interrupted, the transmission magnetic gear 10 applied to the magnetic transmission of the present invention can transmit power .

That is, the magnetic transmission of the present invention selectively shifts the rotational power of the engine to the output shaft using the variable speed magnetic gear (10) provided so as to be variable on the input shaft and the output shaft.

2 to 4, the magnetic transmission according to an embodiment of the present invention will be described in more detail.

The magnetic transmission 100 according to an embodiment of the present invention includes an input shaft 110, a first speed change magnetic gear 120, an output shaft 130, a second speed change magnetic gear 140, a first housing 150, 2 housing (160).

The input shaft 110 is disposed on the coaxial line with the rotation axis of the engine so that the rotational power of the engine is input.

The output shaft 130 is disposed parallel to the input shaft 110.

The first speed change magnetic gear 120 is disposed on the input shaft 110 and is connected in a variable shift state to selectively shift the rotational power of the engine and transmit the rotational power to the output shaft 130.

The first variable speed magnetic gear 120 includes a first inner rotor 121 connected to the input shaft 120 for rotation and a first outer rotor 121 spaced apart from the first inner rotor 121, And a first outer rotor 123 and a second outer rotor 123. The first inner rotor 121 and the first outer rotor 123 are disposed between the first inner rotor 121 and the first outer rotor 123, And a first pole piece module 122 having a plurality of pole pieces.

The second speed change magnetic gear 140 is disposed on the output shaft 130. The second speed change magnetic gear 140 is connected to the output shaft 130 in a variable movable state to selectively shift the rotational power of the engine to the output shaft 130. [

The second variable speed magnetic gear 140 includes a second inner rotor 141 coupled to the output shaft 130 for rotation and a second outer rotor 142 spaced apart from the second inner rotor 141 143 which are located between the second inner rotor 141 and the second outer rotor 143 and which transfer the magnetic flux between the second inner rotor 141 and the second outer rotor 143, And a first pole piece module 142 having a plurality of pole pieces.

Each of the first inner rotor 121 and the second inner rotor 141 includes a cylindrical inner rotor and a plurality of magnets radially attached to outer surfaces of the inner rotor about a rotation axis The first outer rotor 123 and the second outer rotor 143 have a cylindrical outer rotor and a plurality of magnets 123 radially attached to the inner surface of the outer rotor about a rotation axis, (Hereinafter referred to as an " outer magnet "). The first inner rotor 121 and the second inner rotor 141 will be described in detail with reference to FIGS. 5 and 6. FIG.

The first housing 150 is rotatably connected to the output end of the input shaft 110, and houses the second variable speed magnetic gear 140 in a cylindrical shape. That is, the first housing 150 may be provided in a cylindrical shape so as to accommodate the cylindrical second gear-change magnetic gear 140.

At this time, the second outer rotor 143 is mounted on the inner wall of the first housing 150.

The second inner rotor 141 is mounted on the output shaft 130 and can be moved by the second inner rotor driving means (not shown) on the output shaft 130 in a variable manner. It is needless to say that the second inner rotor driving means may be implemented by various driving means capable of variably moving the second inner rotor 141.

The first inner rotor 121 of the first speed change magnetic gear 120 is mounted on the input shaft 110 and the input shaft 110 is connected to the first housing 150, The second outer rotor 143 of the second speed change magnetic gear 140 is mounted on the inner wall of the first housing 150. That is, when the input shaft 110 is rotated by the rotational power of the engine, the first inner rotor 121 rotates, and the first housing 150 and the second outer rotor 143 also rotate .

The second housing 160 is rotatably connected to the output shaft 130. The second housing 160 receives the first variable speed magnetic gear 120 of a cylindrical shape and houses the second variable speed magnetic gear 140, The first housing 150 is also accommodated. That is, the second housing 160 may be provided in a cylindrical shape so as to house the first housing 150 and the first variable speed magnetic gear 120 in a cylindrical shape.

At this time, the first outer rotor 123 is mounted on the inner wall of the second housing 160 and can be moved on the inner wall of the second housing 160 by the first outer rotor driving means (not shown) Respectively. It is needless to say that the first outer rotor driving means may employ various driving means capable of variable movement of the first outer rotor 123.

The second inner rotor 141 of the second speed change magnetic gear 140 is mounted on the output shaft 130 and the second housing 160 is connected to the output shaft 130, The first outer rotor 123 of the first variable speed magnetic gear 120 is mounted on the inner wall of the second housing 160. That is, the second housing 160, the second inner rotor 141, and the output shaft 130 rotate together.

The components of the magnetic transmission 100 according to an embodiment of the present invention have been described, and the shift operation of the magnetic transmission 100 will be described below.

2, the first outer rotor 123 of the first speed change magnetic gear 120 is in a state of being shifted from the first pole piece module 122 and is shifted away from the first pole piece module 122, The second inner rotor 141 of the magnetic gear 140 is also shifted from the second pole piece module 142 and is off. In this state, the input shaft 110, the first inner rotor 121, the first housing 150, and the second outer rotor 143 are rotationally driven by the rotational power of the engine.

However, no rotating system is formed between the first variable speed magnetic gear 120 and the second variable speed magnetic gear 140, so that power transmission is not performed. Accordingly, the magnetic transmission 100 is in a neutral state in which no power is transmitted to the output shaft 130.

3, the first outer rotor 123 of the first speed change magnetic gear 120 is moved to a position above the first pole piece module 122 to be able to transfer magnetic flux, The second inner rotor 141 of the second speed change magnetic gear 140 is still out of the second pole piece module 142. In this state, the input shaft 110, the first inner rotor 121, the first housing 150, and the second outer rotor 143 are rotationally driven by the rotational power of the engine.

Meanwhile, a rotating system is formed between the rotors of the first variable speed magnetic gear 120 to transmit power. That is, the second housing 160 and the output shaft 130 rotate together with the rotation of the input shaft 110. At this time, the first inner rotor 121 of the first speed change magnetic gear 120 rotates at a high speed, and the output shaft 130 is decelerated to transmit power by a gear ratio (see FIGS. 5 and 6) do. Here, the arrow indicates the direction of power transmission.

Referring to FIG. 4, the first outer rotor 123 of the first speed change magnetic gear 120 is in a state of being shifted from the first pole piece module 122 to be off as shown in FIG. 2, The second inner rotor 141 of the two-speed magnetic gear 140 is variablely moved to the lower portion of the second pole piece module 142 so that the magnetic flux can be transmitted. In this state, the input shaft 110, the first inner rotor 121, the first housing 150, and the second outer rotor 143 are rotationally driven by the rotational power of the engine.

Meanwhile, a rotor system is formed between the rotors of the second speed change magnetic gear 140 to transmit power. That is, the first housing 150 and the output shaft 130 rotate together with the rotation of the input shaft 110. At this time, the second outer rotor 143 of the second speed change magnetic gear 140 becomes the input side, the second inner rotor 141 becomes the output side, and the gear ratio (see FIGS. 5 and 6) The output shaft 130 is accelerated to transmit the power.

7 to 11 are views for explaining a magnetic transmission according to another embodiment of the present invention.

The magnetic transmission 200 according to another embodiment of the present invention includes an input shaft 210, a first speed change magnetic gear 220, a first speed change magnetic gear 220-1, an output shaft 230, a second speed change magnetic A gear 240, a second-speed variable magnetic gear 240-1, a first housing 250, and a second housing 260. [

The first variable speed magnetic gear 220 includes a first inner rotor 221 coupled to the input shaft 220 for rotation and a first outer rotor 223 spaced apart from the first inner rotor 221, And a plurality of spaced apart pluralities of first and second outer rotors 223 and 223 disposed between the first inner rotor 221 and the first outer rotor 223 for transmitting the magnetic flux between the first inner rotor 221 and the first outer rotor 223, And a first pole piece module 222 provided with pole pieces.

The first-speed change magnetic gear 220-1 is provided adjacent to the first speed change magnetic gear 220 and is also provided on the input shaft 210. [ The first-speed shift magnetic gear 220-1 includes a first-first inner rotor 221-1 connected to the input shaft 210 and driven to rotate, a first outer rotor 223, 1 pole piece module 222-1.

The first outer rotor 223 is simultaneously used as an outer rotor of the first speed change magnetic gear 220 and the first speed change magnetic gear 220-1.

The second speed change magnetic gear 240 is disposed on the output shaft 230 and is connected in a variable movable state to selectively shift the rotational power of the engine and transmit the rotational power to the output shaft 230.

The second variable speed magnetic gear 240 includes a second inner rotor 241 connected to the output shaft 230 for rotation and a second outer rotor 243 spaced apart from the second inner rotor 241, And a plurality of spaced apart plurality of spaced apart first and second outer rotors 241 and 242 located between the second inner rotor 241 and the second outer rotor 243 for transmitting the magnetic flux between the second inner rotor 241 and the second outer rotor 243, And a first pole piece module 242 having a number of pole pieces.

The second-speed change magnetic gear 240-1 is provided adjacent to the second speed change magnetic gear 240, and is also provided on the output shaft 230. [ The second-speed change magnetic gear 240-1 includes a second inner rotor 241 connected to the output shaft 230 for rotation driving, a second-first outer rotor 243-1, a second- 1 pole piece module 242-1.

The second inner rotor 241 is simultaneously used as an inner rotor of the second speed change magnetic gear 240 and the second-speed change magnetic gear 240-1.

And is the same as the magnetic transmission 100 according to the embodiment of the present invention described in Figs. 2 to 4 except for the above.

The components of the magnetic transmission 200 according to another embodiment of the present invention have been described and the shifting operation of the magnetic transmission 200 will be described as follows. Here, the first outer rotor 223 has a number of poles of 40 magnets and a number of dipoles of 20 poles. The first inner rotor 221 has 10 poles and 5 dipoles, One inner rotor 221-1 has 20 magnetic poles and 10 dipoles. The second outer rotor 243 has a number of poles of twenty-four poles and twelve poles of the second outer rotor 243, the number of poles of the magnet is 30 poles and the number of dipoles is 15 poles, The second inner rotor 241 has 20 poles and 10 dipoles.

7, the first outer rotor 223 of the first speed change magnetic gear 220 is connected to the first outer gear 223 of the first pole piece module 222 and the first- The second inner rotor 241 of the second speed change magnetic gear 240 is also in a state of being displaced from the first pole piece module 222-1 by a variable amount, 242 and the second-first pole piece module 242-1 of the second-speed change magnetic gear 240-1. In this state, the input shaft 210, the first inner rotor 221, the first inner rotor 221-1, the first housing 250, the second outer rotor 243, The 2-1 outer rotor 243-1 is driven to rotate by interlocking with the rotational power of the engine.

However, when the first speed change magnetic gear 220 and the first speed change magnetic gear 220-1, the second speed change magnetic gear 140 and the second-first speed change magnetic gear 240-1 A rotor system is not formed between the rotors, so that power transmission is not performed. Therefore, the magnetic transmission 200 is in a neutral state in which no power is transmitted to the output shaft 230.

Referring to FIG. 8, the first outer rotor 223 is moved to the upper portion of the first pole piece module 222 of the first speed change magnetic gear 220 to be able to transfer magnetic flux, The second inner rotor 241 of the second speed change magnetic gear 240 is still out of the second pole piece module 242 and the second pole piece module 242-1 . In this state, the input shaft 210, the first inner rotor 221, the first inner rotor 221-1, the first housing 250, the second outer rotor 243, The 2-1 outer rotor 243-1 is driven to rotate by interlocking with the rotational power of the engine.

Meanwhile, a rotating system is formed between the rotors of the first variable speed magnetic gear 220 to transmit power. That is, the second housing 260 and the output shaft 230 rotate together with the rotation of the input shaft 210.

At this time, the first inner rotor 221 of the first speed change magnetic gear 220 rotates at a high speed, and the first speed change is performed in which the output shaft 230 is decelerated and the power is transmitted by the gear ratio.

That is, the gear ratio and the torque ratio are 4, the speed ratio is 1/4, and the output shaft 230 on the output side is reduced by 1/4 speed.

9, the first outer rotor 223 is variably moved to the upper portion of the first pole piece module 222-1 of the first-speed change magnetic gear 220-1 so that the magnetic flux is transmitted The second inner rotor 241 of the second speed change magnetic gear 240 is in contact with the second pole piece module 242 and the second pole piece module 242-1, As shown in FIG. In this state, the input shaft 210, the first inner rotor 221, the first inner rotor 221-1, the first housing 250, the second outer rotor 243, The 2-1 outer rotor 243-1 is driven to rotate by interlocking with the rotational power of the engine.

Meanwhile, a rotating system is formed between the rotors of the first-speed shift magnetic gear 220-1 to transmit power. That is, the second housing 260 and the output shaft 230 rotate together with the rotation of the input shaft 210.

At this time, the second speed change is performed in which the output shaft 230 is decelerated and the power is transmitted by the gear ratio of the magnetic transmission 200.

That is, the gear ratio and the torque ratio are 2, the speed ratio is 1/2, and the output shaft 230 on the output side is decelerated by 1/2. This is a state in which the transmission is decelerated in comparison with the state in FIG. 7, but is in an accelerating state in comparison with the state in FIG.

Referring to FIG. 10, the first outer rotor 223 is displaced from the first pole piece module 222 and the first pole piece module 222-1 as shown in FIG. 7 And the second inner rotor 241 is moved to the lower portion of the second pole piece module 242 so that the magnetic flux can be transmitted. In this state, the input shaft 210, the first inner rotor 221, the first inner rotor 221-1, the first housing 250, the second outer rotor 243, The 2-1 outer rotor 243-1 is driven to rotate by interlocking with the rotational power of the engine.

Meanwhile, a rotor system is formed between the rotors of the second speed change magnetic gear 240 to transmit power. That is, the first housing 250 and the output shaft 230 are rotated together with the rotation of the input shaft 210. At this time, the second outer rotor 243 of the second speed change magnetic gear 240 becomes the input side, the second inner rotor 241 becomes the output side, and the gear ratio (see FIGS. 5 and 6) The output shaft 230 is accelerated to transmit the third speed change.

That is, the gear ratio and the torque ratio are 1 / 1.2, the speed ratio is 1.2, and the output shaft 230, which is the output side, is accelerated 1.2 times by acceleration.

Referring to FIG. 11, the first outer rotor 223 is shifted away from the first pole piece module 222 and the first pole piece module 222-1 as shown in FIG. 7 , And the second inner rotor 241 is moved to the lower portion of the second-1 pole piece module 242-1 so that the magnetic flux can be transmitted. In this state, the input shaft 210, the first inner rotor 221, the first inner rotor 221-1, the first housing 250, the second outer rotor 243, The 2-1 outer rotor 243-1 is driven to rotate by interlocking with the rotational power of the engine.

Meanwhile, a rotor system is formed between the rotors of the second-speed variable magnetic gear 240-1 to transmit power. That is, the first housing 250 and the output shaft 230 are rotated together with the rotation of the input shaft 210. At this time, the second-1 outer rotor 243-1 becomes an input side, the second inner rotor 241 becomes an output side, and the output shaft 230 is rotated by a gear ratio (see FIGS. 5 and 6) A fourth speed change is performed in which the power is transmitted at an accelerated speed.

That is, the gear ratio and the torque ratio are 1 / 1.5, the speed ratio is 1.5, and the output shaft 230, which is the output side, is accelerated 1.5 times by acceleration. This is an accelerated shifting state as viewed in comparison with the state of FIG.

Although the first to fourth speed changing gears are provided with the four speed change magnetic gears according to the embodiment of the present invention, it is needless to say that the first to nth speed changing gears can be provided by providing the n variable speed magnetic gears .

FIG. 12 is a vertical cross-sectional view of a speed change magnetic gear of a magnetic transmission according to another embodiment of the present invention, and FIG. 13 is a view illustrating a pole piece of a speed change magnetic gear according to another embodiment of the present invention.

The speed change magnetic gear 300 of the transmission of the present invention includes a pole piece module 13 provided between the inner rotor 11 and the outer rotor 12, Is determined by Equation (a), and it can be seen that the gear ratio is the same as Equation (b).

An outer air gap a1 exists between the pole pieces 131 and the magnets 12b of the outer rotor 12 and the magnets of the pole pieces 131 and the inner rotor 11 11a, there is an inner air gap a2. These pores a1 and a2 serve as resistances in the magnetic circuit, and magnetic fluxes are concentrated.

Hereinafter, the shape of the pole piece 131 will be described in detail with reference to FIG.

13, a pole piece 131 of a magnetic torque converter 300 according to an embodiment of the present invention is formed into a bar shape parallel to a rotation axis 'c', and its vertical section has a first shape 131a and a second shape (131b) are coupled in a planar manner.

The first figure 131a has a first arc 131aa which is a curved line and the first arc 131aa and the center c have the same position and a central angle 1 and their inner diameters d2 are equal to each other. A second line 131ab that is smaller than the inner diameter d1 of the first line 131aa, a line 131ac that connects one ends of the first line 131aa and the second line 131ab, And a line 131ad connecting the other end of the second arc 131ab and the other end of the second arc 131ab.

In other words, the inner radius d2 / 2 of the second arc 131ab is smaller than the inner radius d1 / 2 of the first arc 131aa, the curvatures are equal to each other, and the position of the center c is And coincides with the position of the rotation axis (c).

The lines 131ac and 131ad connecting the first line 131aa and the second line 131ab are curved toward the center of the first graphic pattern 131a .

The second figure 131b has the same position and inner diameter d2 as the second arc 131ab and the center c and the central angle 2 is equal to the central angle 1 of the second arc 131ab. The inner diameter d3 is equal to the inner diameter d2 of the third row 131ba and the inner diameter d2 of the third row 131ba is the same as that of the third row 131ba, A line 131bd connecting one end of the third call 131b and the fourth call end 131bb and a line 131bb connecting the third call end 131ba and the fourth call end 131bb, And a line 131bc that connects the other ends of the two electrodes 131a and 131b.

In other words, the inner diameters d2 / 2 of the second arc 131ab and the inner diameters d2 / 2 of the third arc 131ba are the same, and the inner radius d2 / 2 of the third arc 131ba is the same Is larger than the inner radius (d3 / 2) of the arc 131bb.

The lines 131bc and 131bd connecting the ends of the third and fourth circles 131ba and 131bb are preferably straight lines.

The first figure 131a and the second figure 131b are arranged such that the bisection position c1 of the second arc 131ab and the bisection position c1 of the third arc 131ba overlap each other So that the cross-sectional shape of the pole piece 131 is formed.

14 to 16 are diagrams for explaining a variable for determining the shape of the pole piece of the speed change magnetic gear according to another embodiment of the present invention. There are three variables for determining the shape of the pole piece 131 .

Referring to FIG. 14, the first variable is a distance (?) Of a straight line perpendicular to the third line 131ba and the fourth line 131bb, respectively.

Further, the first vertical distance? Is set to 13.5 占 퐉 (L pr ', hereinafter referred to as' second vertical distance') between the fourth line 131bb and the first line 131aa, % And smaller than 23.5%.

That is, the first vertical distance? Is designed to satisfy the following equation (1).

Figure pat00007

Next, referring to FIG. 15, the second variable is the central angle (?) Of the fourth call (131bb).

The central angle beta of the fourth line 131bb is greater than the angle of the first arcs 131'aa and 131'aa of the two pole pieces 131 'and 131' Is greater than 40% and less than 50% of the central angle of the virtual arc connecting the opposite end of the arc (β ', hereinafter referred to as the "reference angle").

That is, the central angle β of the fourth number 131bb is designed at an angle ranging from 40% to 50% of the reference angle β 'as shown in the following equation (2).

Figure pat00008

Where N p is the number of pole pieces.

Referring to FIG. 16, the third variable is a vertical distance (c2) from a bisecting position c2 of a virtual line segment (l1, hereinafter referred to as a first virtual line segment) connecting both ends of a concave curve 131ac (Hereinafter, referred to as a "concave length") to one of the concave curves 131ac.

The concave length may be defined by virtual line segments l2 and l3 perpendicularly connected to the fourth line 131bb at one end 131ac 'of the one concave curve 131ac on the first line 131aa side, (C4) of the first call (131aa) and the bisection position (c5) of the fourth call (131bb) in the vertical direction at the bisection position (c3) (Hereinafter, referred to as a 'reference length') to an imaginary line segment (? 3, hereinafter referred to as a third virtual line segment)

That is, the concave length? Is designed within the range of 30% to 40% of the reference length? 'As shown in Equation 3 below.

Figure pat00009

Here, D pi is the inner diameter d3 of the fourth arc 131bb, D po is the inner diameter d1 of the first arc 131aa, and N p is the number of the pole pieces 131.

In Equation 3, denominator refers to the reference length y ', which is defined as a straight line passing through points c5 and c4 with the first imaginary line segment l3 being the x axis on a rectangular coordinate system centered on the origin c. And the y-axis coordinate value of the intersection of the straight line passing through the points c3 and c6. However, the reference length? 'Can be calculated by various methods.

As described above, the magnetic transmission 300 according to another embodiment of the present invention improves the shape of the pole piece 131, and the parameters α, β, and γ related to the cross-sectional shape of the pole piece 131 It is possible to concentrate the magnetic flux to the gap to improve the torque transmission and reduce the torque ripple, thereby improving the power transmission rate and the reliability of the shift.

In other words, the magnetic transmission 300 according to another embodiment of the present invention can improve the density of the flux line, improve the inner air gap flux density and the maximum value of the outer air gap flux density (Outer Airgap) Not only the maximum value of the inner rotor torque and the outer rotor torque can be improved, but also the overall torque ripple can be reduced and the reliability of the shift can be improved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation in the present invention. Various changes and modifications will be possible.

100, 200, 300: magnetic transmission 11, 121: inner rotor
11b: Inner rotor 12, 123: Outer rotor
12a: Inner rotor 11a, 12b: Magnet
13, 122: pole piece module 131: pole piece

Claims (19)

An input shaft disposed on a coaxial line for inputting rotational power of the engine;
An output shaft disposed parallel to the input shaft; And
And a variable-speed magnetic gear for each gear position selectively connected to the input shaft and the output shaft to selectively transmit rotational power of the engine to the output shaft,
The variable speed magnetic gear
An inner rotor;
An outer rotor disposed apart from the inner rotor; And
And a pole piece module disposed between the inner rotor and the outer rotor and having a plurality of pole pieces spaced apart from each other for transmitting magnetic flux between the inner rotor and the outer rotor. Transmission. The method according to claim 1,
The inner rotor includes a cylindrical inner rotor and a plurality of magnets (hereinafter referred to as inner magnets) radially attached to outer surfaces of the inner rotor about a rotation axis,
Wherein the outer rotor has a cylindrical outer rotor and a plurality of magnets (hereinafter, referred to as 'outer magnets') radially attached to inner surfaces of the outer rotor about a rotation axis. 3. The method of claim 2,
Wherein the magnetic flux transmission is interrupted when the inner rotor or the outer rotor is variablely moved from the pole piece module, thereby blocking power transmission. 4. The method according to any one of claims 1 to 3,
The cross-section of each of the pole pieces,
A first arc and a second arc having the same center position and center angle as the first arc and having an inner diameter smaller than the inner diameter of the first arc and a second arc having a first arc and a second arc, A first figure surrounded by a line,
And a center angle of the second arc is equal to a center angle of the second arc, a central angle of the third arc is greater than a central angle of the second arc, a central position and a center angle of the third arc are the same, and an inner diameter of the fourth arc is smaller than an inner diameter of the third arc And a second figure surrounded by a line connecting one end and each other end of the third and fourth arcs,
Wherein a bisection position of the second call and a bisection position of the third call have a shape combined with each other to overlap with each other. 5. The method of claim 4,
The vertical distance between the fourth call and the third call (hereinafter, referred to as a 'first vertical distance') may be expressed by the following equation (1) Quot;) is greater than 13.5% and less than 23.5%.
[Equation 1]
Figure pat00010

Where alpha is the first vertical distance and L pr is the second vertical distance. 5. The method of claim 4,
The central angle of the fourth arc is larger than 40% of the central angle of the virtual arc connecting the first calls of the two pole pieces with one pole piece interposed therebetween (hereinafter referred to as a reference angle) Magnetic transmission characterized by less than 50%.
&Quot; (2) "
Figure pat00011

Where beta is the central angle of the fourth arc and N p is the number of pole pieces. 5. The method of claim 4,
Wherein a line connecting the first call and the second call in the first figure is a curve concave toward the center of the first figure (hereinafter, referred to as a 'concave curve'). 8. The method of claim 7,
(Hereinafter referred to as a "concave length") in the vertical direction at the bisecting position of a virtual line segment connecting the both ends of the concave curve (hereinafter, referred to as a "first virtual line segment"),
(2) of the first arc in the vertical direction at a bisecting position of a virtual line segment (hereinafter, referred to as a second virtual line segment) connected at a first call side end of the concave curve in a direction perpendicular to the fourth arc (Hereinafter, referred to as 'third virtual line segment') connecting the second quadrant of the fourth quadrant and the second quadrant of the fourth quadrant. 9. The method of claim 8,
Wherein the concave length is calculated by the following equation (3). &Quot; (3) "
&Quot; (3) "
Figure pat00012

Where D pi is the inner diameter of the fourth arc, D po is the inner diameter of the first arc, and N p is the number of pole pieces. An input shaft disposed on a coaxial line for inputting rotational power of the engine;
A first variable speed magnetic gear for each gear stage selectively connected to the input shaft to selectively transmit the rotational power of the engine to the output shaft;
An output shaft disposed parallel to the input shaft; And
And a second variable speed magnetic gear for each gear position selectively connected to the output shaft so as to selectively transmit rotational power of the engine to the output shaft,
The first shift magnetic gear
A first inner rotor connected to the input shaft and driven;
A first outer rotor spaced apart from the first inner rotor; And
And a first pole piece module located between the first inner rotor and the first outer rotor and having a plurality of spaced apart pole pieces for transmitting magnetic flux between the first inner rotor and the first outer rotor and,
The second speed change magnetic gear
A second inner rotor connected to the output shaft and driven;
A second outer rotor spaced apart from the second inner rotor; And
And a second pole piece module located between the second inner rotor and the second outer rotor and having a plurality of spaced apart pole pieces for transferring magnetic flux between the second inner rotor and the second outer rotor And a magnetic transmission. 11. The method of claim 10,
The first inner rotor and the second inner rotor have a cylindrical inner rotor and a plurality of magnets (hereinafter referred to as inner magnets) radially attached to the outer surface of the inner rotor about a rotational axis ,
The first outer rotor and the second outer rotor include a cylindrical outer rotor and a plurality of magnets (hereinafter, referred to as "outer magnets") radially attached to the inner surface of the outer rotor about a rotation axis Features a magnetic transmission. 12. The method of claim 11,
A first housing rotatably connected to an output end of the input shaft and housing the second variable speed magnetic gear; And
A second housing rotatably connected to the output shaft and housing the first variable speed magnetic gear together with the first housing; Further comprising a magnetic transmission. 13. The method of claim 12,
Wherein the first outer rotor is mounted on the inner wall of the second housing and is variablely moved on the inner wall of the second housing by the first outer rotor driving means,
The second outer rotor is mounted on the inner wall of the first housing,
And the second inner rotor is mounted on the output shaft and is variablely moved on the output shaft by the second inner rotor drive means. 14. The method according to any one of claims 10 to 13,
The cross-section of each of the pole pieces,
A first arc and a second arc having the same center position and center angle as the first arc and having an inner diameter smaller than the inner diameter of the first arc and a second arc having a first arc and a second arc, A first figure surrounded by a line,
And a center angle of the second arc is equal to a center angle of the second arc, a central angle of the third arc is greater than a central angle of the second arc, a central position and a center angle of the third arc are the same, and an inner diameter of the fourth arc is smaller than an inner diameter of the third arc And a second figure surrounded by a line connecting one end and each other end of the third and fourth arcs,
Wherein a bisection position of the second call and a bisection position of the third call have a shape combined with each other to overlap with each other. 15. The method of claim 14,
The vertical distance between the fourth call and the third call (hereinafter, referred to as a 'first vertical distance') may be expressed by the following equation (1) Quot;) is greater than 13.5% and less than 23.5%.
[Equation 1]
Figure pat00013

Where alpha is the first vertical distance and L pr is the second vertical distance. 15. The method of claim 14,
The central angle of the fourth arc is larger than 40% of the central angle of the virtual arc connecting the first calls of the two pole pieces with one pole piece interposed therebetween (hereinafter referred to as a reference angle) Magnetic transmission characterized by less than 50%.
&Quot; (2) "
Figure pat00014

Where beta is the central angle of the fourth arc and N p is the number of pole pieces. 15. The method of claim 14,
Wherein a line connecting the first call and the second call in the first figure is a curve concave toward the center of the first figure (hereinafter, referred to as a 'concave curve'). 18. The method of claim 17,
(Hereinafter referred to as a "concave length") in the vertical direction at the bisecting position of a virtual line segment connecting the both ends of the concave curve (hereinafter, referred to as a "first virtual line segment"),
(2) of the first arc in the vertical direction at a bisecting position of a virtual line segment (hereinafter, referred to as a second virtual line segment) connected at a first call side end of the concave curve in a direction perpendicular to the fourth arc (Hereinafter, referred to as 'third virtual line segment') connecting the second quadrant of the fourth quadrant and the second quadrant of the fourth quadrant. 19. The method of claim 18,
Wherein the concave length is calculated by the following equation (3). &Quot; (3) "
&Quot; (3) "
Figure pat00015

Where D pi is the inner diameter of the fourth arc, D po is the inner diameter of the first arc, and N p is the number of pole pieces.
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KR100669164B1 (en) * 2005-10-10 2007-01-16 백정호 Electromagnetic clutch together with electric motor for fitting manual transmission for hybrid car
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