JPS5872764A - Magnetic coupling - Google Patents

Abstract

PURPOSE:To provide a compact magnetic coupling durable to high thrust and torque, by providing ferromagnetic portions and non-magnetic portions in alternate positions in the facing sides of two members facing each other at a distance. CONSTITUTION:In an outer cylinder 2 coupled to a driving rotary shaft 1, small columnar permanent magnets 6 are fixedly embedded at regular intervals in the axial and circumferential directions in the wall of a circular pipe 6 made of synthetic resin which is a nonmagnetic material. In a core 4 coupled to a driven rotary shaft 3, small columnar permanent magnets 8 are fixedly embedded in the peripheral part of a columnar body 7 made of synthetic resin which is a nonmagnetic material. The magnets 8 are opposed to those 6 of the outer cylinder 2. The north and south poles of the magnets 6, 8 are located so that the opposed magnets 6, 8 attract each other and the polarity of the adjacent magnets 6, 8 is inversed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic compulsion used, for example, in a thrust and torque detecting section of a sushi boat model Japanese sushi test knife, and more specifically, a This invention relates to a magnetic coupling formed by opposing δ in a non-contact state.

As shown in Figure 9P17, the conventional magnetic coupling of this cypress has an outer cylinder (b) as a primary division connected to a rotating shaft 1B+, and a driven rotating shaft (c). It is known that the core (d) as a secondary member is composed only of Mizuku envy.

That is, the eye mark outward (b) is a two-split country cylindrical water fly (b') # (b') fully joined, and also il
J core (d) is a cylindrical permanent magnet (d') split into two.
.

(d') was attached to a stand, and the two ends of this magnetic coupling were bent, and the polarity distribution of the N and S poles in (B) was as shown in the bore in the figure. In such a configuration, the drag force against the thrust in the axial direction is caused by the magnetic force generated by the change in the magnetic field in (B), which is trapped in the position 1 of both end faces based on the mutual axial relative position of the outer cylinder (b) and the core (d). ``Also, the resistance against torque is the relative 1 of the outer cylinder (b) and the core (d).
Since the only magnetic force generated is the change in the magnetic field at the two joint positions (C) based on the g1 displacement, if you try to obtain a magnetic compulsion that can withstand large thrust and torque, it will be impossible to obtain an extremely large one. I got angry.

The present invention was developed in view of the need to extinguish such fires, and its purpose is to provide a magnetic coupling that is extremely compact and can withstand large thrusts and torques.

In order to achieve the above purpose, the magnetic force compression according to 1] is characterized in that a ferromagnetic part and a weakly magnetic part are mixed in the opposing flames of the secondary member and the secondary member. I have everything.

According to the above characteristic configuration, when the primary member and the secondary member are mutually connected by the four axial thrusts, not only the two positions of the magnetic coupling but also many other transverse positions 14
It is possible to generate magnetic sound based on magnetic t#J changes even when the sea is in the 11th position, and even when the primary and secondary members are placed relative to each other due to torque, a large number of shreds can be generated. Since it is possible to generate magnetic force based on changes in the magnetic field, it is possible to obtain extremely large thrust and torque resistance characteristics compared to conventional ones.1 Therefore, for a given thrust and torque that must be withstood, conventional I started getting dirty with things that were extremely compact compared to other objects. By the way, when we conducted an experiment using a non-magnetic outer cylinder and core in which six rows of small circular permanent magnets were regularly scattered in the axial direction and six rows in the circumferential direction, we found that a conventional synchronous type with the same size By being able to withstand about 8 times more thrust and torque than those of
It is possible to change the quality of the product, such as giving priority to thrust resistance and torque resistance, and it is also possible to change the characteristics even if the size is the same, so it is extremely effective in terms of manufacturing and versatility. Are better,.

Hereinafter, explanations will be given based on all the illustrations of the shape of the present invention.

! As shown in Figures 2 and 8 of the JSI diagram, the secondary wJ (2) rotating shaft (31 The core +41i as a secondary member (11) connected to the core +41i is fitted inside with a flat-contact base so as to be relatively movable and rotatable in the axial direction, thereby forming a magnetic coupling t-.

The outer cylinder (2) is a cylindrical tube made of synthetic fallen fat as a non-magnetic material (
6) 7i! 6 durometers on one wall, spaced equally apart by 1N in the axial direction
1, and 6 rows of holes are drilled at equal four corners in the circumferential direction,
Small cylinder permanent 1111161 as a magnetic material with a height of V (fit'AVJ≠) and approximately 1-
.

At the outer periphery of the gold-resin cylinder (7) as a ntt core +47FiS non-sulfuric material, an axis is placed at Small cylindrical Shumizu Hisa magnet (8) with 6 rows each in the direction and circumferential direction.
... is constructed by embedding and fixing the core (
4) The magnetic material portion and the non-magnetic material portion are mixed on the outer peripheral surface.

The polar arrangement of the N and S poles of each magnet (6)...I(8)... is as shown in the figure, with each pair of magnets t61 facing oppositely T,
(Not only are 81 arranged so that they attract each other,
Adjacent magnets t61, +61 and (at e (s
The arrangement is such that the comrades have opposite polarity.

In the above embodiment, the tube (6) and the cylinder (7) made of a non-magnetic material are buried with a magnetic material mixed therein, or conversely, the tube and the cylinder made of a magnetic material are buried with a non-magnetic material
F may be mixed, and it is not a combination of a magnetic material and a non-magnetic material (or a combination of a ferromagnetic material and a weakly magnetic material). Ferromagnetic material portions and weak magnetic material portions may be mixed on the outer peripheral surface of the magnetic material.

In addition, in the above embodiment, in order to obtain good 1# magnetism for use as a magnetic coupling for thrust and torque measurement, the magnets (8)...-(8)/Φ were arranged regularly. However, if they are used to directly transmit rotational power or if non-wire connection is intentionally maintained, they do not need to be arranged regularly.

- Also, the N pole and S4 of each magnetic ladle (6), φ (8)...
As for the polar arrangement of the polarity, the design can be changed from the one shown in the figure (for example, see Figure 4 (a)).
．． Furthermore, each magnet (6)・11. (8)... is not limited to one with a circular cross section, but may also be square shaped.

Figure 4 (b) Vi, the outer cylinder (2) and the core (4) are magnetized (
6)...

(8) An example of changing the number of arrays is Nodocho. In this way, if the arrangement of one magnet (6) is constant, then only the arrangement U of the right hand (8) of the force will improve the sound quality. Although it is a ring, it is easy to obtain a ring with special characteristics.

Figure 5 (A), (B), and (C) are different examples, and Figure 5 (A) is a bar magnet (9)... +101
@ Torque resistance priority with e arranged on the IH side, and
Section (b) Fi circular rut self 0υ fist・, u4・・ Shows the thrust resistance priority pear distributed in the same direction on all axes. Also, the fifth evil (
C) is a combination of these, which means -tor (7) I^l++++++IIHII, -,, -1111-/7] [:)! There is a further advantage that the ratio of the rolling characteristics and the thrust resistance characteristics can be easily set to a predetermined value.

What is shown in the sixth case does not use the outer fiM t21 and the core (4) as the secondary member (1) and the secondary member (b), but instead uses a flange-like member (13+ e round) for both. This is a type of magnetic compression ring, and the technology of the present invention can be applied to this type as well.

[Brief explanation of the drawing]

The drawings show all the constructional aspects of the Akakakatu spring according to the present invention, and Fig. 1 is an exploded perspective view, Fig. 2 is a view taken along the line X-X in Fig. 1, and Fig. Y-Y arrow view, 4th evil (a)
, (b) is a part of the main part of another embodiment, 11-r, fifth example (a), (b), (c) is an exploded perspective view of another example, and sixth example. The figure is an exploded perspective view of yet another embodiment, and a seventh embodiment.
12! , l is the cause of de-utilization of the prior art. (I)...-Next member, (■)...Secondary 8+s material, (2)...Outer cylinder, (4)...
・Nakako, (5)・・・National government, (6)・・・・・・
Permanent magnet, (7)... Cylinder, (8)...
・Water filled magnet, (8) 101111LII#ull#114"-"-Hohe W,
Il-10 Spontaneous Procedural Amendment July 1970 7-1 1 Indication of the Case 1981 Patent Application No. 1785 61 So-2
The name of the invention! 1. Magnetic coupling 3. Relationship with the case of the person making the amendment Patent ・・口（Person 4, Agent @ 531 5, Date of amendment order 7, Contents of amendment + 11 Specification, page G/line I Insert the legal text after the word ``Iru.'' ``In addition, the combination of ``ferromagnetic material'' and ``weakly magnetic material'' as well as the combination of ``magnetic material'' and ``nonmagnetic material'' referred to here is also included. (2) Correct "ferromagnetic materials and weakly magnetic materials" to "strongly magnetic materials and weakly magnetic materials" on page 1 of the same page, lines / to /co. (3) Article g of the same page. Correct "ferromagnetic material part and weak magnetic material part" on page 73 to line d to "ferromagnetic material (magnetic material) part and weak magnetic material (including non-magnetic material) part". (4 ) Figure 8 in the drawings will be corrected as shown in the attached sheet. a. Attached document list corrected drawing 1 copy

Claims (1)

[Scope of Claims] ■ A magnetic coupling comprising a secondary member (I) and a secondary member (It) facing each other in a non-contact state, the secondary member (I) and the secondary member 01) A magnetic coupling characterized by having a ferromagnetic non-part and a weakly magnetic part mixed in each pair of the same song. ■ The secondary member (I) is an inner tube (5) made of a non-magnetic material.
Nouchi I! ! drlfovc multiple water magnets (6, 9,
11) An outside that houses...! [2+, and jIJ secondary member (4) is a cylinder made of non-magnetic material (7
) on the outer circumferential surface of a plurality of water-filled magnets (8, 10, 12),
, several companies have developed a core (4), and the IIIJ core (4) has been placed in the rrrj outer cylinder (2) in an axial homogeneous position and four times privately in a non-contact manner with the company. The magnetic coupling described in Section 2 of Section 11Q of the special wf so-called ice, which is characterized by being a secret in the trace.