JPS601518A - Magnet base - Google Patents

Abstract

PURPOSE:To make it possible to perform stable adsorption and fixing under the state an adsorbing surface is large, by providing the main body of a base, in which a pair of magnetic metals are coupled so as to hold a non-magnetic body, and providing a magnet, which is attached to the central part of the main body of the base so that the rotation of the magnet can be changed. CONSTITUTION:The main body of a magnetic base is constituted by a conventional method. A pair of magnetic metals 18 are coupled so as to hold a non- magnetic body 16. A plate shaped magnet 20 is rotatably attached to the central part of the main body. A recess part is formed at the lower surface part of the main body 10 of the base. The lower edge of each magnetic body 18 is protruded so as to form a leg part 24. With respect to the main body 10 of the magnet base, a soft, bag- shaped container 28, which is filled with a magnetic fluid 26 and can transmit magnetism, is attached in said recess part of this magnet base. In this constitution, the stable adsorption and fixing can be performed under the state an adsorbing surface is large.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a magnetic base, and more particularly, to a magnetic base that can be attached to an arbitrary position of a mechanical device.

[Prior art]

Conventionally, there are devices that use a magnetic base to fix a measuring gauge such as a rotating shaft in a fixed position. In this system, an arm equipped with a measuring gauge at the tip is connected to a mounting hole 12 of a magnet base body 10 as shown in Fig. 1, and can be fixed to any position on the machine by suction by operating a changeover switch 14 on the front side. There is. As shown in FIG. 2, this magnetic base is constructed in such a way that the base main body 10 is made up of a pair of magnetic metals 18 sandwiching a non-magnetic material 16, and the center part of the base body 10 is provided with a switch 14 for operating the changeover switch 14. It is equipped with a magnet 20 that is rotated by the following. Further, the lower surface of the base body 10 is formed with a recessed part 22 cut out in the shape of a 7, and a leg part 24 having a patterned cross section of the magnetic metal 18 formed by the recessed part 22 can be attracted to a mechanical device. It is a face part.

Therefore, by rotating the magnet 20, the pair of magnetic metals 18
By connecting them to each other, a magnetic field is formed between the pair of legs 24 as shown in FIG. 2, making it possible to attract them. On the other hand, when the magnet 20 is directed toward the non-magnetic material 16 as shown in FIG. A magnetic circuit is formed inside the base body 10, and the attraction effect is released.

However, in the above-mentioned conventional magnet base, since the suction surface portion is only the lower edge of the leg portion 24 formed by the concave portion 22, the suction area is small, and only when the object to be suctioned is a planar shape. The problem is that, although it can perform a relatively good suction action on other shapes, such as curved surfaces and uneven surfaces, it cannot stably adsorb and fix.

[Purpose of the invention]

The present invention has focused on the above-mentioned conventional problems, and aims to provide a magnet base that can increase the suction area and stably suction and fix the object regardless of its shape.

(Structure of the Invention) In order to achieve the above object, the magnet base according to the present invention includes a base body in which a pair of magnetic materials are combined with a non-magnetic material in between, and a center portion of the base body that is rotatably switchable. A magnet base having a magnet attached thereto and a concave portion formed in the lower surface of the base body, a magnetically permeable flexible bag-like container filled with magnetic fluid is attached to the concave portion of the base body, and The inside of the bag container is filled with the non-magnetic material,
It is separated by a continuous non-magnetic diaphragm.

With the above configuration, when the magnetic base is installed, the flexible bag-like container filled with magnetic fluid will not come into contact with the magnetic fluid, and even if the container has an uneven surface, it can be shaped to suit the uneven surface. When the suction action is performed, stable suction and fixation is performed with the suction surface in a dog-like state.

[Embodiments of the invention]

Embodiments of the magnetic space according to the present invention will be described in detail below with reference to the drawings.

FIG. 4 is a sectional view of the magnet base according to this embodiment. As shown in the figure, the magnet base main body is constructed in the same manner as the conventional one, and a pair of magnetic metals 18 are bonded to each other with a non-magnetic material 16 in between.
o is rotatably mounted. A concave portion 22 is formed in the lower surface of the base body 1o, and a leg portion 24 from which the lower edge of each magnetic metal 1B projects is formed.

In this way, the magnet base according to this embodiment has the magnetic fluid 2 in the recessed part 22 with respect to the magnet base main body 10.
A magnetically permeable flexible bag-like container 28 filled with drops of No. 6 is attached. This bag-like container 28 is closely connected to the inner wall surface of the recessed part 22, and is set apart so as to connect the pair of legs 24 to close the recessed part 22. There is. The bag-shaped container 28 may be any container that does not allow the magnetic fluid 26 to leak, and may be formed from a magnetically permeable soft synthetic resin material. Further, the interior of the bag-shaped container 28 installed in the recessed portion 22 in this manner is separated by a non-magnetic diaphragm 30 that is continuous with the non-magnetic material 16. That is, the inside of the bag-like container 28 is divided into parts corresponding to the respective magnetic metals 18 of the base body 10, and the inside of each of the divided parts is filled with the magnetic fluid 26. The non-magnetic diaphragm 30 may be a rubber film having a thickness of 2 to 3 layers, for example. Therefore, in the magnet base according to this embodiment, the magnetic circuit is normally cut off by the nonmagnetic material 16 and the nonmagnetic diaphragm 30.

On the other hand, FIG. 5 shows a sectional view of the magnet base according to the second embodiment. In the magnet base according to the second embodiment, a non-magnetic side wall 32 is further attached to the side wall surface of the magnet base main body 10, and the lower edge of this side wall 32 is extended to protrude from the leg portion 24 of the magnetic metal 18. It is. A bag-like container 28 partitioned by a diaphragm 30 is mounted in the recessed part 22 surrounded by this protruding part, as in the previous embodiment.

FIG. 6 shows how the magnet base constructed in this way is used according to the second embodiment. That is,
If the magnet base is installed on the round shaft 34 when the member to be attracted is the round shaft 34, the outer surface of the bag-shaped container 28 will be attached to the round shaft 34.
4 and makes complete contact along the shape of the round shaft 34. In this state, selector switch 14 (see Figure 1)
When inserted, the pair of magnetic metals 18 are connected via the magnet 20, forming a magnetic circuit. Also, the recessed portion 22
The magnetic fluid 26 inside one of the divided chambers of the bag-shaped container 280 corresponding to the N pole becomes Nm, and the magnetic fluid 26 on the other divided chamber side corresponds to the S pole. Since the container 28 is magnetically permeable, a closed loop magnetic circuit is formed with the round shaft 34, and the magnet base is attracted to the round shaft 34.

In this way, according to this embodiment, the bag-like container 28 filled with the magnetic fluid 26 is attached to the recessed part 22, so that it is compatible with any shape of the various members corresponding thereto. shape, and adheres closely to each uneven part. Therefore, the suction area becomes extremely large, and a stable suction state can be achieved regardless of the shape of the member to be suctioned.

In the above embodiment, the flexible bag-like container 28 is divided by the non-magnetic diaphragm 30, but the independent flexible bag-like containers are connected via a flexible non-magnetic material, and the concave portion It is also possible to attach it to 22.

〔Effect of the invention〕

As explained above, the magnetic base according to the present invention has the excellent effect of increasing the suction area and stably suctioning and fixing regardless of the shape of the member to be suctioned.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a conventional magnet base, Fig. 2 is a sectional mj diagram showing the same attraction state, Fig. 3 is a sectional view with the switching switch turned off, and Fig. 4 is a magnet base according to the present invention. FIG. 5 is a sectional view of the second embodiment, and FIG. 6 is a sectional view of the second embodiment in a suction state. 10... Magnet base body, 16... Non-magnetic material, 18... Magnetic metal, 20... Magnet. 22... Concave portion, 26... Magnetic fluid, 28... Flexible bag-like container, 30... Non-magnetic diaphragm. Agent Tatsuyuki Unuma (and 1 other person)

Claims (1)

[Claims] (1) It has a base body in which a pair of magnetic metals are bonded with a non-magnetic material sandwiched between them, and a magnet attached to the center of the base body so as to be rotatable, and the base body has a recessed part in the bottom surface. In the formed magnetic base, a magnetically permeable flexible bag-like container filled with magnetic fluid is attached to the concave portion of the base body, and the inside of the container is separated by a non-magnetic diaphragm that is continuous with the non-magnetic material. Magnetic base.