JPH1155932A - Noncontact type power transmission mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a noncontact type power transmission mechanism which can transmit power in condition that the drive shaft and the driven shaft are orthogonal and that they do not cross each other, and can surely transmit power without ripples on the side of a driven shaft even at low-speed revolution of a drive shaft with simple constitution. SOLUTION: In the case that a rotary shaft 3 where a second magnet system of the gear 2 is attached is driven as a drive shaft, the N pole 4 on the periphery of the second magnet system of the gear 2 and the first S pole 8a out of the two S poles 8a and 8b arranged zigzag on the periphery of a first magnet system of the gear 1 attached to another rotary shaft 6 attract each other, and according to the shifting of the N pole 4 by the rotation of the second magnet system of the gear 2, the N pole attracts the next S pole 8b by the angle being made by the two S poles arranged zigzag at the first magnet system of the gear 1. Hereby, the rotary shaft 6 where the first magnet system of the gear 1 is attached rotates, serving as a driven shaft, and further the next S pole 5 arranged on the side of the drive shaft attracts the N poles 7a and 7b arranged zigzag on the side of the driven shaft, thus rotating this power transmission mechanism continuously.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-contact power transmission mechanism for transmitting power in a non-contact manner using magnetic force.

[0002]

2. Description of the Related Art Conventionally, as a power transmission mechanism for transmitting power from a drive shaft to a driven shaft by using one of two rotating shafts as a drive shaft and the other as a driven shaft, for example, a non-contact type using a magnetic force or the like is used. 2. Description of the Related Art A non-contact type power transmission mechanism for transmitting power by a motor is widely used.

[0003] This non-contact power transmission mechanism can transmit power in a non-contact manner by using a magnetic force. Therefore, especially in an environment requiring quietness or an environment in which dust is not generated, for example, In a vacuum device, a drive shaft and a driven shaft are arranged on the atmosphere side and the vacuum side with a partition wall therebetween, so that the drive shaft and the driven shaft can be used for transmitting power from the atmosphere side to the vacuum side.

As described above, as a method of transmitting power from a drive shaft to a driven shaft by a non-contact power transmission mechanism using magnetic force, for example, as shown in FIG. And two rotation axes K1 located in parallel
1 and K12, spur gear bodies H11 and H12 are attached, and magnets J11 and J12 having alternately different polarities are arranged at equal intervals on their outer circumferences. , Rotating shafts K11, K12
As shown in FIG. 2, a power transmission form such as a bevel gear is provided between each of two rotating shafts K21 and K22 which are positioned so as to intersect at right angles. H21 and H22 are attached, and magnets J21 and J22 having alternately different polarities are arranged at regular intervals on their umbrella surfaces. How to communicate
Alternatively, as shown in FIG. 3, a power transmission form is provided by opposed spur gears, and two rotating shafts K located on a concentric shaft.
31 and K32 at the respective ends thereof.
32, and magnets J31 and J32 having alternately different polarities are arranged at equal intervals on the outer periphery of the opposing surfaces, and power is generated between the rotation shafts K31 and K32 by the magnetic force between these magnets J31 and J32. How to communicate
Further, as shown in FIG. 4, two moving bodies H41 and H41 are described in Japanese Patent Application Laid-Open No. 61-254064.
42 are placed one on top of another, and their moving bodies H4
Magnets J41, J provided at equal intervals in each of H1, H42
There is a method of transmitting power between the moving bodies H41 and H42 by generating a rotational or linear moving force by crossing the 42.

[0005]

However, in the above-mentioned conventional non-contact type power transmission mechanism for transmitting power using magnetic force, the same power transmission as the helical gear defined in JIS-B-1722 is used. There has been no method for transmitting power from the drive shaft to the driven shaft in a state where the drive shaft and the driven shaft are orthogonal and do not intersect.

Further, in order to obtain the above-described power transmission mode, a magnet-type gear in which magnets are arranged in a staggered manner on the outer periphery of the gear may be considered. At the time of low-speed rotation of the drive shaft, pulsation is generated on the driven shaft side, and there is a problem that power cannot be transmitted reliably.

The present invention solves the above-mentioned conventional problems. When power is transmitted from a drive shaft to a driven shaft by using the magnetic force of a magnet type gear, the drive shaft and the driven shaft are orthogonal to each other. Non-contact power transmission that can transmit power in a state where it does not intersect and can transmit power reliably with no pulsation on the driven shaft side even when the drive shaft is rotating at low speed with a simple configuration. Provide a mechanism.

[0008]

In order to solve the above-mentioned problems, a non-contact type power transmission mechanism of the present invention has a structure in which, when driven by a rotary shaft having a second magnet type gear mounted thereon as a drive shaft, a second power transmission mechanism is provided. And the first S pole of the two S poles arranged in a zigzag on the outer circumference of the first magnet type gear attached to the other rotating shaft. The two Ss arranged in a staggered manner on the first magnet type gear according to the movement of the magnet by the rotation of the second magnet type gear while attracting each other.
When the next S pole attracts each other according to the angle formed by the poles, the rotation shaft on which the first magnet type gear is attached rotates as a driven shaft, and further rotates on the drive shaft side. The S pole is continuously rotated by attracting two N poles arranged in a staggered arrangement on the driven shaft side.

As described above, when power is transmitted from the drive shaft to the driven shaft by using the magnetic force of the magnet type gear, the power can be transmitted in a state where the drive shaft and the driven shaft are orthogonal and do not intersect. In addition, with a simple configuration, even when the drive shaft rotates at a low speed, the power can be reliably transmitted without pulsation on the driven shaft side.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A non-contact type power transmission mechanism according to a first aspect of the present invention is a non-contact type power transmission mechanism for transmitting power in a non-contact manner using a magnetic force. The N-poles and the S-poles are alternately turned outward and staggered around the outer periphery of a disc-shaped body which is arranged so as to be orthogonal and does not intersect and is attached to one axis so as to use it as a rotation axis. A first magnet-type gear having a plurality of magnets arranged in a zigzag pattern, and N poles and S poles alternately arranged on the outer periphery of a disc-shaped body attached to the other shaft so as to use it as a rotation axis. A second magnet-type gear having a plurality of magnets arranged in a row so as to face outward, and wherein the first and second magnet-type gears are arranged at right angles in a non-contact state, By giving a drive to the shaft, the magnetic force of the magnets arranged in the first and second magnet type gears causes A structure that transmits power in a square of the shaft.

According to a second aspect of the present invention, there is provided a non-contact power transmission mechanism formed by connecting the first magnet type gear according to the first aspect to the center point of each of the magnets arranged in a staggered manner. The distance between the magnets represented as the length of one side in the shape is configured to be the same as the distance between the center points of the respective magnets of the second magnet type gear in which the N pole and the S pole are alternately arranged. .

According to the above construction, when the rotary shaft to which the second magnet type gear is attached is driven as a drive shaft, the N pole on the outer periphery of the second magnet type gear is attached to the other rotary shaft. Of the two S poles arranged in a zigzag pattern on the outer circumference of the first magnet type gear, the first S pole attracts each other, and the first S pole attracts each other. The next S pole attracts each other by the angle formed by the two S poles arranged in a zigzag pattern on the magnetic gear, so that the rotating shaft on which the first magnetic gear is attached becomes the driven shaft. Then, the next S pole arranged on the drive shaft side continuously rotates by attracting two N-poles arranged in a staggered manner on the driven shaft side.

Hereinafter, a non-contact power transmission mechanism according to an embodiment of the present invention will be specifically described with reference to the drawings. FIG. 5 is a configuration diagram of the non-contact power transmission mechanism of the present embodiment, and FIG. 6 is a side view of the non-contact power transmission mechanism of the embodiment. FIG. 7 is an explanatory diagram of an arrangement of magnets of a first magnetic gear in the embodiment, and FIG. 8 is an explanatory diagram of an arrangement of magnets of a second magnet gear in the embodiment.

5 and 6, reference numeral 3 denotes a rotating shaft;
Is a second magnet-type gear mounted on the rotating shaft 3, and eight magnets of φ6 mm are arranged at equal intervals on the outer periphery of the N-pole 4.
And S poles 5 are arranged and embedded so as to be alternately on the outside. Reference numeral 6 denotes the other rotating shaft, and 1 denotes a first magnet type gear mounted on the rotating shaft 6, whose outer circumference is φ6m.
m magnets have N poles 7a and 7b and S poles 8a and 8b
It is further arranged in a zigzag pattern and embedded so as to be outside at equal intervals and alternately by 0 pieces. The distance L between the magnet type gears 1 and 2 is set to 1 mm.

The magnets have N poles 7a, 7b and S poles 8a,
The first magnet-type gear 1 arranged in a staggered manner so that the first and second magnets 8b are alternately arranged on the outside, and the distance between the magnets shown in FIG. 7, that is, each magnet is arranged in a staggered manner. The length L1 of one side of the triangle formed by connecting the center points of the magnets is N in the second magnet type gear 2 shown in FIG.
The configuration is such that the length L2 between the center points of the magnets in which the poles 4 and the S poles 5 are alternately arranged is the same.

The operation of the non-contact power transmission mechanism configured as described above will be described below. FIG. 9 (a)
As shown in FIG. 9 (b) and FIG. 9 (b), a second magnet type gear 2 in which permanent magnets N and S poles 5 are alternately arranged on one rotating shaft 3 in FIG. On the other rotating shaft 6, a permanent magnet is provided with N poles 7a, 7b and S poles 8a,
8b are alternately and staggered, and the first magnetic gears 1 are arranged orthogonally, and the magnetic gears 1 and 2 are arranged adjacent to each other.

When drive is applied to one of the rotation shafts in this state, for example, when the rotation shaft 3 is driven as a drive shaft, the N pole 4 on the second magnet type gear 2 and the other rotation shaft 6 are connected. The S pole 8a on the attached first magnet type gear 1 attracts each other, and according to the rotation of the magnet of the second magnet type gear 2 on the driving side, that is, the movement of the N pole 4 in the direction shown by the arrow 10, The next S is determined by the angle α formed by arranging the S poles 8a and 8b of the first magnetic gear 1 in a staggered manner.
The first magnet-type gear 1 on the driven side rotates in the direction indicated by the arrow 9 by the attraction between the poles 8b and the rotating shaft 6.
Also rotate. Further, the second magnet type gear 2 on the driving side
Is attracted to the N pole 7a of the first magnet type gear 1 on the driven side, whereby the rotating shaft 6 on the driven side can rotate continuously.

As described above, when power is transmitted from the drive shaft to the driven shaft by using the magnetic force of the magnet type gear, the power can be transmitted in a state where the drive shaft and the driven shaft are orthogonal and do not intersect. In addition, with a simple configuration, even when the drive shaft rotates at a low speed, the power can be reliably transmitted without pulsation on the driven shaft side.

[0019]

As described above, according to the present invention, when the rotary shaft to which the second magnet type gear is attached is driven as a drive shaft, the N pole on the outer circumference of the second magnet type gear and another Of the two S-poles arranged in a zigzag pattern on the outer periphery of the first magnet-type gear attached to one of the rotation shafts, the first S-pole attracts each other, and the magnet is generated by the rotation of the second magnet-type gear. , The first S-pole attracts the next S-pole by the angle formed by the two S-poles arranged in a zigzag pattern on the first magnet-type gear, so that the rotating shaft to which the first magnet-type gear is attached Rotate as a driven shaft, and further, the next S pole arranged on the driving shaft side attracts the two N-poles arranged in a staggered manner on the driven shaft side, so that it can rotate continuously. .

Therefore, when power is transmitted from the drive shaft to the driven shaft using the magnetic force of the magnet type gear, the power can be transmitted in a state where the drive shaft and the driven shaft are orthogonal and do not intersect. With a simple configuration, even when the drive shaft rotates at a low speed, the power can be reliably transmitted without pulsation on the driven shaft side.

[Brief description of the drawings]

FIG. 1 is a first configuration diagram of a conventional non-contact power transmission mechanism.

FIG. 2 is a second configuration diagram of a conventional non-contact power transmission mechanism.

FIG. 3 is a third configuration diagram of a conventional non-contact power transmission mechanism.

FIG. 4 is a fourth configuration diagram of a conventional non-contact power transmission mechanism.

FIG. 5 is a configuration diagram of a non-contact power transmission mechanism according to an embodiment of the present invention.

FIG. 6 is a side view of the non-contact power transmission mechanism of the embodiment.

FIG. 7 is an explanatory view of an arrangement of magnets of a first magnetic gear according to the embodiment;

FIG. 8 is an explanatory view of an arrangement of magnets of a second magnet-type gear according to the embodiment.

FIG. 9 is an explanatory diagram of the interaction of magnets between the magnetic gears in the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st magnet-type gear 2 2nd magnet-type gear 3,6 Rotation axis 4,5 Magnet of 2nd magnet-type gear 7a, 7b, 8a, 8b Magnet of 1st magnet-type gear

Claims (2)

[Claims] 1. A non-contact power transmission mechanism for transmitting power in a non-contact manner using a magnetic force, wherein two shafts are arranged so as to be orthogonal to each other and do not intersect with each other. The N pole and S
A first magnet-type gear having a plurality of magnets arranged in a staggered manner such that the poles alternately face outward, and a disc-shaped body attached to the other shaft so as to use it as a rotation axis. A second magnet-type gear having a plurality of magnets arranged in a row so that an N-pole and an S-pole alternately face outward, the first and second magnet-type gears being provided on an outer peripheral portion; Are arranged at right angles in a non-contact state, and by giving drive to one axis,
A non-contact power transmission mechanism that transmits power to the other shaft by magnetic force of magnets arranged on the first and second magnet gears. 2. A distance between the magnets represented by a length of one side of a triangle formed by connecting a center point of each of the magnets arranged in a zigzag manner with the first magnet type gear is defined as a second length. The non-contact type power transmission mechanism according to claim 1, wherein the distance between the center points of the magnets in which the N pole and the S pole are alternately arranged is the same.