JPS58170964A - Magnetic gear - Google Patents

Abstract

PURPOSE:To convert rotation of one rotor to rotation of the other rotor out of contact by disposing portions where magnetic force interacts on respective surfaces of two rotors which don't have a shaft in common. CONSTITUTION:Magnets 3 are disposed with equal circular pitches on each periphery of disc plates 1, 2 having parallel shafts O1, O2 as the center thereof, so that rotation of a driving wheel 1 is transmitted to a follower 2 out of contact by magnetic attraction between different magnetic holes at close positions. Thus, friction and abrasion can be prevented, and the need of gear cutting is eliminated, which can increase degree of freedom of a material for cars. Magnets of the driving wheel 1 are partially omitted to easily apply an intermittent motion to the follower 2.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a non-contact rotation transmission mechanism between two shafts using magnetic force. Magnets are arranged on the surfaces of the two rotating bodies, and the magnetic force between the opposing magnets 5 at close positions allows the rotational motion of the prime mover 1 to be converted into the rotational motion of the driven wheel 2 without contact. 1- There is no need for a tooth profile like a curve, there is no need for gear cutting, so the material of the wheel can be freely selected, intermittent gearing can be achieved without designing a mechanism, and there is no friction, making it possible to use a helical gear. In some cases, automatic ■ can be used as a secondary side, etc.
It has advantages that conventional gears do not have.

Its structure will be explained with reference to the drawings.

Figures 1 and 2 show magnets (or magnetized parts) on the circumferences of disks 1 and 2 centered on the parallel axes 0 and 0, respectively.
3 are arranged so that the circular pitches are equal to each other, and in the approaching position, the rotation of the motive wheel 1 is caused by the attractive force between t44 as shown in Fig. 1 or the repulsive force between the same poles as shown in Fig. 2. The motion is transmitted to the rotational motion of the driven wheel 2 in a non-contact manner. Magnets can be fitted or fixed with adhesive, double-sided adhesive tape, etc. Also, instead of one of the magnets for insects 1 and 2, a magnetic body with a convex portion may be placed.

The experimental results of Figures 1 and 2 show, for example, that a certain ceramic magnet is
= 8 with double-sided adhesive tape, the closest distance was 5 mm, and the rotation speed of the driven wheel could be transmitted steadily at 40 rpm compared to the rotational speed of the driving wheel of 30 rpm. C11
If the closest distance between magnets 1 and 2 is less than a certain value, even if the rotational speed of the motor vehicle is high to some extent, depending on the strength of the magnetic force, the driven vehicle will rotate the load with zero inertia below a certain value, depending on the strength of the magnetic force. will be reliably communicated.

The present invention is characterized in that friction and M wear can be avoided, gear cutting is inconvenient, and the degree of freedom in the material of the seat is increased. Utilizing this, the present invention can also easily provide intermittent work to the driven drive [1() by partially missing the stones of the drive drive [1().For example, if N-1 is used, a long residence time An intermittent motor with a temporary stop can be used while driving the groove.

The present invention includes non-contact transmission of rotational to linear motion, such as a rack and pinion. FIG. 3 shows the rotation of a disk (pinion) 1 having a magnet or magnetized portion 3, and the rotation of the disk (pinion) 1 having a magnet or a magnetized portion 3 in relation to the 1a line movement of the rack 2, which moves the convex portion 4 of the magnetic material on the 2 plane.
It is transmitted by the attractive force of 53 due to the magnetism against it. The pitch of the magnetized portions 3 and the pitch of the convex portions 4 are made equal. (or 1%'lJ is an integer multiple of the latter) are also the transmission conditions in this case.

The present invention can also be applied to rotational transmission between two axes that are not parallel. Fig. 4 shows the substitution of the bevel width according to the present invention between two axes that are on the same plane but not in a straight line, and magnets are placed along the generatrices on the faces of two cones so that the circular pitches are equal. The rotation of the cone 1 can be transmitted to the rotation of the cone 2 in a non-contact manner by magnetic force.

It is also possible to substitute gears with staggered shafts, which is not shown in the figure, but can be realized by mutually arranging members on which magnetic force acts on the portions of the tooth width of the can that correspond to the teeth. For example, if a magnet is placed on the circumference of a disc along the profile of a screw or worm made of magnetic material, it will become a worm tun, and since it is non-contact, (E East worm worm tun) Irreversible transmission (automation) due to friction can coexist. (
This is a new reversible transmission condition that depends on the thread pitch and magnetic force).

The following can be considered as an application of the present invention. Since it is suitable for light C2 load low-speed rotation transmission, it can be used for recording, measurement, starvation control, medical equipment, toys, plastic models, etc.

Since it does not depend on the material of the gear, the present invention, which is made of ceramic (inorganic material) and ceramic magnet, is effective for rotational transmission under high temperatures, for example. Furthermore, by using non-contact,
The present invention will make it possible to rotate objects and shafts that cannot be touched by high temperatures or j1 current, and to rotate objects and shafts inside circular tubes from the outside. Also, through one method of minute movement, the convex portion 4 of the rack 2 in FIG.
If the magnets 3 on the pinion 1 are arranged at a pitch of ++m, and the number of magnets 3 on the pinion 1 is one, then the rack 2 will change by 1/N per rotation of the pinion 1.
mmn Moving minute movement! A lll1 mechanism has been created and can be introduced into optical instruments such as reading telescopes. The use of inorganic materials as described above also leads to the miniaturization of locomotor mechanisms, making it possible to introduce them into artificial organs, for example.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the use of the attractive force of the tooth width of the present invention. Fig. 2 is a plan view of the use of the repulsive force in the spur teeth of the present invention. Fig. 3 is the plan view of the magnetic rack and pinion of the present invention. Figure 4 is a cross-sectional view of the magnetic bevel tooth width of the present invention (1) is the driving part, (2) is the driven part, (3) is the magnet (magnetized part), (4)
Convex portion made of magnetic material Patent applicant: Tatarayo - 2 No. 11 A] 2 No. 214

Claims (1)

[Claims] A part where magnetic force acts on each other is placed on the surfaces of two rotating bodies that do not share a common axis, and the rotational movement of the prime mover is converted into the rotational movement of the driven wheel (or rack) by magnetic force (attraction or repulsion).
Magnetic gears that transmit linear motion (like a pinion) without contact