JPH03183347A - Rotary solenoid - Google Patents

Abstract

PURPOSE:To flatten and miniaturize a product by making a base and pole parts erected at both ends out of magnetic bodies so as to form a U-shaped yoke, and winding coils around the pole parts, and bearing the rotary shaft of a rotor with a bearing which is provided at the center and consists of a nonmagnetic body. CONSTITUTION:A U-shaped yoke 20 is made, by a base 21 and pole parts 22 erected at both ends of it, out of magnetic bodies. Coils 23 are wound through bobbins 24 on the pole parts 22. A bearing 26 consisting of a nonmagnetic body is attached to the center of the base 21, and this bears the rotary shaft 27, to which a rotor 28 is attached, freely in rotation. The rotor 28 is normally energized in the condition that it stops at the position shown in the figure deviated from the magnetic pole 22. When a current is applied to the coil 23, the rotor 28 rotates as shown by an arrow and stops at the front of the magnetic pole 22. When the current to the coil 23 is stopped, the rotor 28 returns to the initial position. Hereby, a flat and miniature device can be manufactured cheaply. This is suitable for the changeover, an indicator, a imprinter, etc.

Description

[Detailed Description of the Invention] [Field of Application for G Business Operators] This invention is applicable to pachinko games (switching of conveyance paths in play games, conveyance paths of small article manufacturing lines, etc.), display devices, stamping devices, etc. The rotary solenoid is connected to a rotary solenoid that is used as a drive source for the switching operation section of each of the 11 devices, such as the operation section of the 11 devices.

(Prior Art) Conventionally, as shown in FIGS. 5 and 6, this type of rotary solenoid has a rotor 3 rotatably faced within upper and lower yokes 2, 2 around which a coil 1 is wound. The shaft 4 of the rotor 3 has bearings 5.5 mounted on both ends of the rotor 3.
When the coil 1 is energized and a magnetic field is formed in the yoke 2, the rotor 3 protrudes as shown by the arrow in FIG. 71 are known. Further, as shown in FIGS. 7 and 8, the yoke 10 has side bars 11, 11 and a cylindrical center pole 12.
A coil 13 is wound around the center pole 12, and a plastic vibe 14 is fitted thereinto, and a shaft 15 is rotatably inserted into the plus book vibe 14 and attached to its upper end. By arranging the rectangular rotor 16 between the side bars 11 and 11 of the yoke 10, when the coil 13 is energized, a magnetic field is generated as shown by the dotted line in FIG. It is known that the shafts 11 and 11 are respectively attracted to the side m poles 11 and rotated around the shafts 15.

[Problem to be solved by the invention]

However, in the former prior art described above, it is necessary to precisely align the centers when connecting the upper and lower yokes 2.2, resulting in poor assembly efficiency. Since the rotor 3 is installed during installation, it becomes bulky in the axial direction, making the whole flat and small.
There are drawbacks that cannot be overcome.

In addition, in the latter case, since a magnetic field as shown in FIG. 7 is formed, a magnetic attraction action acts between the center pole 12 and the rotor 16, and the rotor 16 is pushed downward, resulting in a large frictional force. Therefore, we cannot move smoothly together. Since this magnetic attraction effect increases in proportion to the strength of the magnetic field of the rotor 10, the smoothness of rotation of the rotor 16 cannot be improved even if the current applied to the coil 3 is increased. Furthermore, together with the gear 17 between the rotor 16 and the side pole 11 of the yoke 10, the center pole 12
Since there is also a gap between the magnetic field and the rotor 16, there are drawbacks such as a large magnetic loss in the generated magnetic field and poor performance.

Therefore, in view of the above-mentioned problems of the conventional technology, this invention was made to solve the problems, and has a compact and flat structure that rotates the rotor smoothly, efficiently, and reliably. Easy and cheap rotary solenoid (available in Q-1).

[Means to solve the problem]

As a means to achieve this, the present invention forms a yoke made of a magnetic material into a shape of a yoke with a base and poles erected at both ends, and winds a yoke around the poles. A bearing body made of a non-magnetic material is provided at the center of the base, and a rotor that attracts and rotates while facing the above-mentioned pole part is attached to a rotating shaft inserted into the bearing body at the rotation axis t1 (= J digit).

〔Example〕

An embodiment of the structure of the present invention shown in the drawings will be described in detail below.

1 and 2 show a first embodiment of this invention,
The yoke 20 is made of a magnetic material and is formed into a trowel-shaped cross section by bending upwardly polar plates 22 and 22 that protrude and recess at both ends of a circular single plate 21. ] The coil 3 is wound around the bobbin 24,
These are fitted to the pole plates 22 of the yoke 20, respectively, and the coil holding plate 25 made of a non-magnetic material is fitted from the L portion thereof, and the coil holding plate 25 is connected to the center of the substrate 21 of the yoke 20.
A pipe-shaped bearing body 26 made of a hull body is inserted and fixed thereto, whereby the coil 23 wound around the bobbin 24 is firmly fixed to the pole plate 22 of the yoke 20. Bearing body 26
A rotating shaft 27 is fitted inside the rotating shaft, and by fixing the center part of an elongated rotor 28 to its upper end, both ends of the rotor 28 are faced to the inside of the polar plate 22 of the yoke 20. Arrange it so that it does.

In addition, two are the holes protruding from the board 21 (=I J'l is 7).
Nisu.

With this structure, the rotary shaft 27 is connected to a device to be operated (not shown), and the rotor 28 is stopped in a stacked position misaligned with the pole plate 22 of the rotor 20, as shown in FIG. Always keep it energized. When the coil 23 is energized in this state, a magnetic field is formed in the yoke 20 as shown by the dotted line in FIG. , the rotor 28 is pulled toward the electrode plate 22 as shown by the arrow in FIG. ：I'm confused, rotor 2
8 is rotated until it is placed facing the front of the electrode plate 22. Therefore, the rotating shaft 27 attached thereto rotates to operate the device.

Next, when the coil 23 is de-energized, the magnetic field formed in the yoke 20 is demagnetized and the magnetic attraction effect on the rotor 28 is eliminated.
7, the rotor 28 is rotated and returned to the old position where it was displaced from the pole plate 22.

3 and 4 show a second embodiment of the invention,
In this embodiment, similarly to the first embodiment, the yoke 30 has a three-shaped cross section formed by a closing plate 31 and a polar plate 32, and a bobbin 34 is fitted to each of the polar plates 32, and a bobbin 34 is fitted onto each of the polar plates 32. The coil holding plate 35 is fitted and fixed with the bearing body 36, and the bearing body 3
The coil 33 is wound only around one bobbin 34, and a spring is attached to one side of the coil holding plate 35. A mounting piece 39 is provided protrudingly, and a spring mounting piece 40 is also provided protrudingly from the rotor 38, so that both spring mounting pieces 39.40
An illumination spring 41 is stretched between them.

At the tip of one 7J of the Sennichi-938, there are provided protrusions 1 to 42 which are engaged with the electrode plate 32. Covers the entire area/
13 to prevent the intrusion of waste seeds.

By rotating the rotation shaft 37 in this manner, when it reaches the device 14, it rotates +13 by the coil spring 4.
7 holds the device at one of the starting positions bY, l. When the coil 33 is energized from this state, a magnetic field is formed in the yoke 30, the rotor 38 is pulled toward the bar plate 32 against the tension of the coil spring 41, and the stopper 42 is moved from the pole plate 32 (
Rotate it to the position where it touches the 11I+ end and correct it to zero. This allows the co-rotating shaft 3a to slightly move the device to the other operating position. Furthermore, when the coil 33 is de-energized, the magnetic field formed in the yoke 30 is demagnetized and the rotor 3
8 is a device b1 which is rotated by the tension of the spring 41, rotated to the old position shifted from the polar plate 32, and connected to the rotating shaft 37.
[1 operation can be returned to the device.

〔Effect of the invention〕

As described above in detail with respect to the various embodiments, the present invention has a U-shaped structure in which one coil is placed between the poles and a bearing body is provided in the center. The entire structure can be flattened and formed into a compact shape.In addition, there is little gap between the yoke and the rotor, minimizing magnetic loss and allowing efficient zero-movement. The structure is simple and easy to manufacture, as there is no wear resistance due to the magnetic attraction action in the direction of the C1 axis when the rotor faces each other to form a magnetic field between the pole parts, and the rotor can be rotated smoothly. It has excellent effects and can be provided at low cost.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional side view of the first embodiment of the invention, FIG. 2 is a plan view, FIG. 3 is a longitudinal sectional side view of the second embodiment of the invention, and FIG. 5 is a longitudinal side view of the conventional example, FIG. 6C is a schematic plan view, FIG. 7 is a longitudinal side view of another conventional example, and FIG. 8 is a plan view. 20... ]-ri, 21... Substrate 22... Pole plate 23...] Coil 6... Bearing body 27... Co-rotating shaft 28... Rotor diagram diagram diagram diagram diagram Figure fi-to- Funeral diagram Funeral diagram

Claims (1)

[Claims] A yoke made of a magnetic material is formed into a U-shape with a base and pole parts erected at both ends, a coil is wound around the pole part, and a bearing body made of a non-magnetic material is provided at the center of the base of the yoke. A rotary solenoid characterized in that a rotor that faces the pole part and rotates under suction is attached to a rotating shaft that is rotatably inserted into a bearing body.