JPS6038173Y2 - Magnetic attraction type instrument support stand - Google Patents

Description

[Detailed description of the invention] The present invention relates to a magnetic attraction type instrument support stand, and more specifically, by inserting a magnetic operating rod into the instrument support rod, a maximum of three magnetically active surfaces can be formed, and it can be used in a narrow space. The present invention relates to a magnetically adsorbed instrument support that has extremely good operability even when placed in places or in liquids.

A conventional instrument support of this type is shown in FIGS. 1 and 2.

In FIG. 1, 10 indicates two magnetic metals 11a and ll.
b is a main body that is integrally joined to sandwich the non-magnetic metal 12 from the left and right sides.

A cylindrical recessed hole 13 is formed in the center of the main body 10 in the front-rear direction, extending longitudinally through the non-magnetic metal 12 and spanning the magnetic metals 11a and llb.

A permanent magnet 14 having an oval cross section is rotatably fitted into the recessed hole 13, and an operating lever 15 connected to the center of rotation of the permanent magnet 14 is provided on the side wall of the main body 10 adjacent to the side wall. There is.

Further, an instrument support rod 16 is provided upright on the top surface of the main body 10, and a magnetically active surface 17 is formed on the bottom surface of the main body 10.

By rotating the operating lever 15, the magnetically active surface 17 is demagnetized or energized in a known manner.

However, when the instrument support rod 16 is disposed on the top surface and the magnetically acting surface 17 is disposed on the bottom surface as in the conventional example described above, demagnetization and excitation effects are exerted by the rotation of the permanent magnet 14, as shown in FIG. Top a, b, c.

Of the four sides d, the a side is occupied by the operating lever 15, and the d side is occupied by the instrument support rod 16, so that only the C side can have a magnetically active surface.

For this reason, after measuring with an instrument using C-plane, turn the instrument 1
If you want to set it to the opposite position by 80 degrees, please set the meter itself to 18
It must be rotated 0° and reset.

Also, when using an instrument that has an instrument panel on one side,
If the device can only be supported by a surface, installation may be difficult, such as making the instrument panel difficult to see depending on the location.

Further, since the operating lever 15 is disposed close to the main body 10, when installing the support stand in a narrow recess, for example, even if the support stand can be inserted, it is difficult to reach the operation lever 15. rotation may not be possible.

Furthermore, during electric discharge machining, etc., it is often necessary to install an instrument support stand on the machine stand submerged in the machining fluid in order to measure the accuracy of the machined surface.

For this reason, it is necessary to immerse one's hand in the machining fluid and rotate the operating lever 15 to attach or remove the support base, which results in poor workability as the machining fluid adheres to the hand each time.

The present invention was developed to solve the above-mentioned difficulties, and its purpose is to be able to form three magnetically active surfaces, and to have an extremely good operability even in narrow spaces or in liquids, and whose cross section is approximately half-sized. Two magnetic metals having circular recesses are integrally joined by sandwiching a non-magnetic metal, a cylindrical hollow part is formed, and a permanent magnet is rotatably built into the hollow part to form a main body. , an instrument support stand in which an operating rod for rotating the permanent magnet from the outside of the main body is connected, and an instrument support rod is established on the outer surface of the main body, the instrument supporting rod is formed hollow, and the operating rod is inserted through the instrument support stand; Another object of the present invention is to provide a magnetic attraction type instrument support stand, characterized in that the center axis of the operating rod and the axis of the rotating shaft of the permanent magnet are aligned in the vertical direction.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Reference numeral 20 denotes a main body, which is made up of two magnetic metals 24a and 24b that are integrally joined to sandwich the plate-shaped nonmagnetic metal 22 shown in FIG. 3 from the left and right.

The main body 20 has magnetically active surfaces 26 a on the bottom and two sides.
? 26 b and 26 c are respectively formed, and the main body 20 has a recessed hole 2 in a cylindrical shape extending longitudinally through the non-magnetic metal 22 and spanning the magnetic metals 24 a and 24 b in the central part thereof.
8 are formed in the vertical direction.

A permanent magnet 30 has a cylindrical shape with a diameter slightly smaller than the diameter of the recessed hole 28, and is fitted into the recessed hole 28 so as to be rotatable about the central axis in the longitudinal direction.

Further, the permanent magnets 30 have different magnetic poles (N,
S) is formed, and both sides thereof are chamfered.

As the magnet material of the permanent magnet 30, alnico magnet,
Alternatively, there are ferrite magnets such as ferrite, &ferrite, and St ferrite, or rare earth metal magnets.

32 is a support that has a protruding piece that sandwiches the upper end of the permanent magnet 30 and rotates within the recessed hole 28; 34 has a screw hole 36 drilled in the center and is fixed to the main body 20 so that the supporter rotates within the recessed hole 28; This is the top plate that closes the

Reference numeral 38 designates an instrument support rod formed hollow and having a predetermined length, and is screwed and fixed into the screw hole 36 at the lower end.

Reference numeral 40 denotes an operation rod that is rotatably inserted into the instrument support rod 38 and is connected to the supporter 32 at its lower end; 42 is fixed to the upper end of the operation rod 40 with a pin 44, and its lower end is connected to the instrument support rod 38; This is an operating knob that is loosely fitted on the top end.

In order to improve operability by reducing the diameter of the operating knob 42, it is preferable to use a ferrite magnet or a rare earth metal magnet as the magnetic material of the permanent magnet 30.

For ferrite magnets and rare earth metal magnets, the reversible magnetic permeability of the operating point setting position in the design of the moving point magnetic circuit is smaller than that of alnico magnets, and when using permanent magnets with low reversible magnetic permeability, Since the rotational resistance of the permanent magnet due to magnetic force is small, even if the operating knob 42 has a small diameter, it can be operated easily and smoothly.

In the above case, the diameter of the operating knob 42 is formed to be approximately the same diameter as the instrument support rod 38 or a small diameter that is slightly larger.

Note that when an alnico magnet is used as the permanent magnet 30, the rotation torque of the operating knob 42 is large, and the operating knob 42
When the diameter is small, it may be difficult to rotate it.

In this case, for example, a through hole (not shown) is provided in the diametrical direction at the tip of the operating rod 40, and the operating rod (
The operating lever 40 may be rotated by inserting a lever (not shown) in a detachable manner, or an operating lever (not shown) may be freely pivoted at the tip of the operating lever 40. .

In the above embodiment, the magnetically active surfaces are provided on three sides, the bottom and two side surfaces of the main body, but it is also optional to provide them only on the bottom or only on the sides, as in the conventional case.

Next, the operation of the present invention will be explained.

When the operating knob 42 is rotated, the permanent magnet 30 is rotated via the operating rod 40 and the supporter 32, and the magnetically active surfaces 26a, 26 by 26c are energized or demagnetized as is known in the art.

Then, instruments (not shown) are attached to the instrument support rod 3B via appropriate members (not shown), and the magnetically active surface 26a,
26b and 26c are energized and the instrument is installed at a desired location.

As described above, according to the support stand according to the present invention, the operating lever of the permanent magnet is inserted into the instrument supporting lever, and the operating knob and the instrument supporting lever are disposed on the same plane with respect to the main body. It is possible to form magnetically active surfaces on up to three of the four surfaces that are affected by the magnetic de-excitation effect.

In particular, since magnetically active surfaces can be formed on two of the four faces parallel to the instrument support rod, operability is good, such as being able to set the instrument in the opposite direction while the instrument is fixed to the support rod.

Furthermore, even if the instrument panel is only on one side, it has the advantage of being able to be placed in a position where the instrument panel can be easily viewed.

In addition, since the operating knob is located at the tip of the instrument support rod, separate from the magnet body, the support base can be fixed in the recess as long as the magnet body can be inserted, even if it is a narrow recess where it is difficult to insert a hand. , the range of instrument installation will be greatly expanded.

In addition, when instruments are often installed in the machining fluid to measure the accuracy of the machined surface, such as during electrical discharge machining, the operating knobs are exposed above the fluid, so it is difficult to immerse your hands in the machining fluid as in the past. You don't have to get your hands dirty, and you don't have to worry about washing your hands every time, so it's easier to work with.

Furthermore, when a ferrite magnet or a rare earth metal magnet is used, the rotational resistance of the operating knob is small and the operating knob can be formed to have a small diameter, so the operating knob does not get in the way during instrument measurement work, etc., which is very effective.

Although the present invention has been variously explained above with reference to preferred embodiments, the present invention is not limited to these embodiments, and it goes without saying that many modifications can be made without departing from the spirit of the invention. It is.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional view of a conventional instrument support stand, and FIG. 2 is a side view thereof. FIG. 3 is a longitudinal cross-sectional view showing a preferred embodiment of the instrument support according to the present invention, and FIG. 4 is a cross-sectional view taken along the line A-A. 10... Main body, lla, llb... Magnetic metal, 12... Non-magnetic metal, 13...
... Recessed hole, 14 ... Permanent magnet, 15 ...
...Operation lever 16... Instrument support rod, 17.
... Magnetic action surface, 20 ... Main body, 22.
...Nonmagnetic metal, 24a, 24b...
Magnetic metal, 26 a * 26 b * 26 c
...Magnetic action surface, 28 ... Concave hole, 30
...Permanent magnet, 32 ... Supporter, 34
...Top plate, 36...Screw hole, 38.
...Instrument support rod, 40...Operating rod, 42
......Operation knob, 44...pin.

Claims (1)

[Scope of utility model registration request] Two magnetic metals each having a recess with a semicircular cross section,
An operation in which a non-magnetic metal is sandwiched and integrally joined, a cylindrical hollow part is formed, a permanent magnet is rotatably built into the hollow part to form a main body, and the permanent magnet is rotated from outside the main body. In an instrument support stand in which the rods are connected and an instrument support rod is established on the outer surface of the main body, the instrument support rod is formed hollow, the operation rod is inserted through the instrument support rod, and the central axis of the operation rod and the rotation axis of the permanent magnet are connected. A magnetic attraction type instrument support stand characterized by having its axes aligned vertically.