JPS59103799A - Reducer for moving load of carsor of rail type universal parallel rule, etc. - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device in which the moving load of a cursor of a rail-type flexible parallel ruler, coordinate analyzer, etc. is reduced by a magnetically levitated blade made of a magnetic material. A recessed portion is formed and a cover plate is removably attached to the recessed portion to protect the magnetic material, improve the appearance of the rail member, and facilitate the removal of floating dust such as iron powder that adheres to the magnetic material. The purpose is to make it possible to do so.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be explained in detail below with reference to an embodiment of a rail type universal parallel ruler shown in the accompanying drawings.

2 is a drawing board, 4 is a horizontal rail made of drawn aluminum fixed to the upper edge of the drawing board 2 via a vise-type fixture 6, and a recess for inserting a magnetic material is provided along the entire length of the rail. 8 is formed. Reference numeral 10 denotes a band-shaped iron plate inserted into the recess 8, the lower surface of which is in close contact with the bottom surface of the recess 8, and both sides of the iron plate 10 are inserted into the recess 8.
It is tightly fitted into a groove 12.degree. 14 bored over the entire length of the recessed portion 8 at the lower end of the side wall forming the recessed portion 8. 16 is the recessed part 8
There is a magnetic material consisting of five belt-shaped magnetic rubbers press-fitted into the inner part over the entire length of the rod, and these are arranged in parallel so that different poles are not adjacent to each other, and each lower surface is attached to the iron plate IO. It is adsorbed. Both side portions of the magnetic body 16 fit into grooves formed in the recessed portion 8 . Reference numeral 18 denotes a cover plate disposed over the entire length of the recessed part 8, a protrusion 18a of this is in elastic contact with the upper surface of the magnetic body 16, and both side parts are connected to the horizontal surface 8a of the recessed part 8,
It is in elastic contact with 8a. 20 is a horizontal cursor, and horizontal guide rollers 22 and 24 rotatably supported by the horizontal cursor are in contact with a vertical rail surface formed along the longitudinal direction of the horizontal rail 4. A vertical guide roller 26 is rotatably supported by the horizontal cursor 20, and its surface is in contact with a horizontal rail surface formed along the longitudinal direction of the horizontal rail 4. Reference numeral 28 denotes a safety roller, which faces the horizontal rail surface formed over the entire longitudinal length of the horizontal rail 4 at an appropriate interval. 30 is a vertical rail, and a bracket 32 is fixed to one end of the vertical rail.
The lower part of the horizontal cursor 20 is rotatably centered around an axis parallel to the horizontal rail 4, and is attached to a rising portion of the horizontal cursor 20 with a shaft 34.
supported. Reference numeral 36 denotes a magnetic body consisting of seven strip-shaped magnetic rubbers fixed to the lower surface of the protruding piece 38 formed on the bracket 32. The homopolar plane is arranged to face the body 16.

The bracket 32 is biased in the direction of floating relative to the horizontal rail 4 by the repulsive magnetic force acting between the magnetic bodies 36 and 16.

In this embodiment, the entire load applied to the bracket 32 is received by the repulsive magnetic force between the magnetic bodies 36 and 16, but part of this load is absorbed by the 11U between the vertical guide roller on the side of the horizontal cursor 20 and the horizontal rail surface. It may be configured so that it is received by 4° is a bracket fixed to the tail of the vertical rail 3o, and a magnetic material is fixed to the lower surface of this bracket.

The magnetic body is a magnetic body 42 disposed at the lower edge of Fig. Fi2.
, the magnetic body on the side of the brackets 1 to 40 and the magnetic body 42
The tail of the vertical rail 3o floats above the drawing board 2 due to the repulsive magnetic force acting between the vertical rails 3o and 3o. 44 is vertical rail 3o
A head 46 is connected to this via a hinge member, and a straight ruler 48.degree. 50 is fixed to a ruler mounting plate of the head 46. In addition, a magnetic material is press-fitted into the vertical rail 3o in the same configuration as the horizontal rail 4 in FIG.
It may also be configured to levitate with respect to zero by magnetic force.

In the above configuration, the drawing board 2 is
When pressure is applied in any direction parallel to the surface, horizontal cursor 2
0 is guided by the vertical rail surface of the horizontal rail 4
move along.

The vertical cursor 44 can be moved along the vertical rail 30 to move the head 46 and straight edge 48,50 to a desired position on the drawing board 2.

When the horizontal cursor 20 moves, the vertical rail 30. Since almost no load is applied to the head 46 and the horizontal cursor 20 by their own weight, the horizontal cursor 20, that is, the vertical rail 30, can be moved with extremely light force. When dust such as iron powder adheres to the surface of the cover plate I8 due to the magnetic force of the magnetic body 16, pull out the cover plate 18 from the recessed part 8 along its longitudinal direction.
The magnetic force is removed from the cover plate 18 and the surface of the cover plate 18 is cleaned.

As described above, the present invention includes forming a recess for inserting a magnetic material along the longitudinal direction in a rail member that guides a cursor, inserting a device for inserting the magnetic material into the recess, and attaching a cover plate to the opening of the recess. Since it is removably attached, the magnetic material is not exposed to the outside, so that the magnetic material is protected and the cover plate creates a decorative effect on the rail member.

Furthermore, by removing the cover plate from the recessed portion, magnetic force is removed from the surface of the cover plate, and there is an effect that dust such as iron powder adhering to the cover plate can be easily cleaned.

[Brief explanation of drawings]

Figure 1 is an overall plan view of the rail type universal parallel ruler, Figure 2
The figure is a side view of the main parts. 2...Drawing board, 4...Horizontal rail, 8...Recessed part. 10... Iron plate, 16... Magnetic material, 18...
Lid plate, 20...horizontal cursor, 30...vertical rail. 36...Magnetic material, 40...Bracket, 42...
...Magnetic material, 44...Vertical cursor, 46...
Head, 48.50...Straight ruler.

Claims (1)

[Claims] A 10 drawing board 2, a horizontal rail 4 fixed to the upper edge thereof, a horizontal cursor 20 movable along the horizontal rail 4,
a vertical rail 3o whose one end is connected to the horizontal cursor 2o;
A vertical cursor 44 is movable along the vertical rail 30. In a rail-type flexible XP-row ruler or the like comprising a head 46 connected to the fir cursor 44, a recessed portion 8 for inserting a magnetic material is formed in the horizontal rail and/or the vertical rail in the longitudinal direction thereof, and the recessed portion A strip-shaped magnetic body 16 is inserted and arranged at 8. A cover plate 18 is removably attached to the opening of the recessed part 8,
A magnetic body 36 is disposed to face the magnetic body 16 on the cursor that moves along the horizontal rail and/or the vertical rail, or on a member interlocking therewith, and the magnetic force of both magnetic bodies 36 and 16 moves the cursor horizontally. A moving load reducing device for a cursor, characterized in that the cursor is subdivided in a direction in which it floats relative to a rail and/or a vertical rail.