JPS6328567Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a magnetic stand used in mechanical work and inspection work.

Magnetic stands are generally used as holders for jigs, measuring instruments, workpieces, etc. in general assembly, wiring assembly, inspection assembly, and are extremely convenient. However, in a general magnetic stand, the contact area between the stand base and the surface plate is small, and the built-in magnet has a weak magnetizing force, so it cannot be used when supporting a heavy object.

The purpose of the present invention is to eliminate such drawbacks, increase the magnetizing force by providing a groove in the yoke, and provide a magnetic stand that is inexpensive and has good operability by realizing a simple structure and an eccentric shaft. .

FIG. 1 is a front sectional view showing an embodiment of the magnetic stand of the present invention, and FIG. 2 is a sectional view showing the magnetic stand in the OFF state. In FIG. 1, reference numeral 1 designates a magnet, a fixing plate 2 is attached to the upper surface, a yoke 3 is attached to the lower surface, and the three are fixed with screws or adhesive. V on the bottom of yoke 3
It forms a U-shaped or U-shaped groove 4. Reference numeral 5 denotes an iron core, one end of which is made smaller than the inside of the yoke 3, and the other end inserted into the inside of the fixed plate 2 with high precision. A mounting hole 6 is provided in the fixed plate 2, and a groove 7 is provided in the other end of the iron core 5, and the eccentric shaft 8 is inserted into the hole 6 and the groove 7 with the mounting hole 6 and the groove 7 aligned. Reference numeral 9 denotes a fixture, which is used to attach the eccentric shaft 8 to the fixed plate 2. 10 is a knob that rotates the eccentric shaft 8. Fig. 1 shows the iron core 5 and the surface plate 11 in contact with each other, and is in the ON state. That is, iron core 5
Magnetic fields a and b are formed by the yoke 3 and the magnetic stand 11, and the magnetic stand and the surface plate 11 are brought into close contact with each other. Even if the groove 7 is not formed, the magnetic field b may be used for general use, but the groove 7 prevents partial concentration and leakage of the magnetic field, and the yoke 3
The magnetizing force is doubled in order to maintain the area balance of the iron core 5 and the iron core 5, which is very effective when an extremely strong magnetizing force is required.

In FIG. 2, by rotating the eccentric shaft 8, the iron core 5 is moved upward by the eccentric dimension of the eccentric shaft 8, the iron core 5 and the surface plate 11 are separated, and the contact portion c of the iron core 5 is moved upward.
and the contact part d of the yoke come into contact and a magnetic field e is formed.
It will be in the OFF state. By further rotating the eccentric shaft 8, the iron core 5 and the surface plate 11 come into contact again and turn on.
becomes the state of

As described above, the present invention has a simple structure in which only an eccentric shaft is used for the ON-OFF mechanism, and easy operation is possible with a small number of components. In other words, the magnet is turned from ON to OFF.
However, by using an eccentric shaft, switching between ON and OFF has become extremely easy. Moreover, it is possible to obtain extremely strong magnetizing force by the structure that forms the magnetic fields a and b. Furthermore, due to the contact between parts c and d, a smooth magnet is created without creating a magnetic field to the surface plate.
It is possible to turn it off.

[Brief explanation of the drawing]

FIG. 1 is a front sectional view showing an embodiment of the present invention;
FIG. 2 is a sectional view showing the OFF state of FIG. 1. In the figure, 1...magnet, 2...fixing plate, 3...yoke, 4...groove, 5...iron core, 6...
...Mounting hole, 7...Groove, 8...Eccentric shaft, 9...Mounting tool, 10...Knob, 11...Surface plate, b, e...
Magnetic field, c, d...contact part.

Claims (1)

[Scope of utility model registration request] A yoke having a groove and a hole on the lower surface of the magnet is joined to a fixing plate having a hole in the center on the upper surface of the magnet, one end of the iron core is made smaller than the inside of the hole in the yoke and inserted into the hole in the yoke, and the other end of the iron core is into the hole of the fixing plate so that it slides smoothly, and inserting one end of the eccentric shaft into the groove provided at the other end of the iron core and the mounting hole of the fixing plate,
A magnet is characterized in that a knob is fixed to the other end of the eccentric shaft, the eccentric shaft is rotatably attached to the fixing plate by a fixture, and the iron core is moved up and down by rotating the eccentric shaft with the knob. Netstand.