JPS5856358B2 - Cursor guide mechanism in rail-type flexible parallel ruler devices, etc. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cursor guiding mechanism in a rail-type flexible parallel ruler device, a rail-type coordinate analyzer, etc., and uses the magnetic force of a magnet to smoothly move a vertical cursor along a vertical rail with a light force. The purpose is to make it possible to move to

The configuration of the present invention will be described in detail below with reference to embodiments shown in the accompanying drawings.

In FIG. 1, reference numeral 1 denotes a drawing board, which is attached to a tiltable base so that it can be fixed at any tilt angle.

2 is a horizontal rail fixed to the drawing board 1, to which a horizontal cursor 3 is movably connected.

A vertical rail 4 is attached to the horizontal cursor 3, and a tail roller 5 is rotatably attached to one end of the rail.

A vertical cursor 6 is movably connected to the vertical rail 4, and a head 7 is connected to the cursor 6 via a hinge member.

Straight edges 8 and 9 are attached to the head 7.

Next, the cursor guide mechanism will be explained with reference to FIGS. 2 to 4.

Reference numeral 4 denotes a vertical rail, and its longitudinal direction includes cursor running surfaces 10 and 11 parallel to the first surface of the drawing board, cursor upper direction regulating surfaces 12 and 13, and lateral vibration perpendicular to the first surface of the drawing board. Regulating surfaces 14 and 15 are formed.

The surfaces of rollers 16 and 17 rotatably supported by the vertical cursor 6 are in contact with the lateral vibration control surface 14, and the surfaces of rollers 18 and 19 are in contact with the lateral vibration restriction surface 15.

20, 2L22, 23 are the surfaces 10, 12, 11.1
This is a long plate-shaped magnet fixedly installed along the line 3, and in this embodiment, a manganese aluminum magnet is used.

24, 25 and 26, 27 are magnets fixed to the rising portion of the vertical cursor 6, as shown in the figure, respectively.
It faces the magnets 20, 21, 22, 23 with a slight gap therebetween.

The mutually opposing magnets are set to have the same polarity, and due to the repulsive force of the magnets, the vertical cursor 6 completely floats on the cursor running surface 10.11 of the vertical rail 4, and the vertical cursor 6 moves upward. A predetermined distance is maintained with respect to the regulating surface 12.13.

Reference numerals 28, 29, and 30 are auxiliary rollers rotatably attached to the vertical cursor 6, and are closely opposed to the polar surfaces of the magnets 20, 21, 22, and 23.

These magnets 20, 2L22゜23 and rollers 28, 29, 30
The opposing distance between the magnets 20, 21, 22, 23 and 2
4, 25.

26 and 27.

The magnets 20, 21, 22, 23 and the rollers 28°29.3
Due to the existence of the opposing interval with 0, a movement permissible range is set for the vertical cursor 6 within this interval in a direction perpendicular to the surface of the drawing board.

The magnets 20, 21, 22, 23 are coated with Teflon 31.

Incidentally, the surfaces of the magnets 24, 25, 26° 27 may be coated with Teflon 32 without providing the auxiliary rollers 28°29, 30.

The above auxiliary rollers 28, 29° 30, Teflon 31, 32
These means constitute a friction force reducing member.

In the above configuration, when an external stress is applied to the vertical cursor 6 along the vertical rail 4, the vertical cursor 6 moves along the vertical rail 4.
along the running surface 10.11 of the vertical rail 4 in a completely floating state.

When a strong external stress is applied to the vertical cursor 6 and it vibrates in the vertical direction, the auxiliary rollers 28, 29, 30 move against the magnets 20, 21.
, 22° and 23, and is subjected to the stress of the vibration due to this contact.

When the vertical cursor 6 moves, the rollers 16, 17 degrees, 18, and 19 rotate while contacting the regulating surfaces 14 and 15.

The above configuration is also provided between the horizontal cursor 3 and the horizontal rail 2.

Next, another embodiment will be described with reference to FIGS. 5 and 6.

Reference numeral 35 denotes a roller that is rotatably supported by the rising portion 37 of the vertical cursor 36, and the roller 37 is placed on the running surface 39 of the vertical rail 38.

40.41 is a magnet fixed to the vertical cursor 36, 42.
A magnet 43 is fixed to the vertical rail 38 side, and the left side of the vertical cursor 36 floats above the running surface 44 of the vertical rail 38 due to the repulsive magnetic force between the magnets 40 and 42 .

In this embodiment, if the cursor 36 has a configuration in which at least a portion thereof floats above the running surface of the rail 38, the cursor 36
6 can be moved smoothly along the rail 38 and sufficient effects can be obtained.

Furthermore, as shown in FIG. 5, between the magnets 40 and 42, and between the magnets
A predetermined gap is formed between 1 and 43, and this gap sets a permissible range of movement of the vertical cursor on the side where the magnets 40 and 41 are attached in a direction perpendicular to the drawing surface.

When the drawing board 1 is tilted in the upright direction, the falling edge of the vertical cursor 6.36 in the direction perpendicular to the drawing board 1 surface decreases, and the vertical cursor 6.36 moves due to the existence of the permissible movement range.
The vertical cursor 6.36 does not make pressure contact with the vertical rails 4, 38 due to slight movement in the upward vertical direction with respect to the surface of the drawing board.

Further, when the drawing board 1 is tilted in the horizontal direction, the falling edge of the vertical cursor 6.36 increases and the vertical cursor slightly moves downward and vertically with respect to the drawing board surface.

As described above, the present invention levitates the vertical cursor with respect to the vertical rail by magnetic force, so that the vertical cursor can move in a direction perpendicular to the drawing surface between the vertical cursor and the vertical rail. Since the allowable movement range is provided, even if the inclination angle of the drawing board changes and the falling force of the vertical cursor in the direction perpendicular to the drawing surface changes, this change can be absorbed within the allowable movement range. This allows the vertical cursor to move smoothly without being pressed against the vertical rail by magnetic force.

Furthermore, when the vertical cursor comes into contact with the running surface of the vertical rail due to strong external stress from the floating state, the contact is made through the friction force reducing member, so that no large friction force is generated at the time of contact. Exists.

[Brief explanation of drawings]

The figures show preferred embodiments of the present invention, in which Fig. 1 is an overall plan view of a rail type universal parallel ruler device, Fig. 2 is a sectional view taken along line B-B, Fig. 3 is a plan view of the main parts, and Fig. 4 The figure is a cross-sectional view taken along line A and -A, FIG. 5 is a cross-sectional view of a main part showing another embodiment, and FIG. 6 is a plan view of the same. 1...Drawing board, 2...Horizontal rail, 3...
...Horizontal cursor, 4...Vertical rail, 5...
...Tail roll, 6...Vertical cursor, 7...
...Head, 16,17...Colo, 18.
19... Coro, 20, 21. 22, 23...
...Magnet, 24,25,26,27...Magnet.

Claims (1)

[Claims] 1. A horizontal rail, a horizontal cursor attached to the horizontal rail so as to be movable along the horizontal rail, a vertical rail connected to the horizontal cursor, and a vertical cursor running surface of the vertical rail. In a device comprising a vertical cursor arranged movably along the vertical cursor and a head connected to the vertical cursor, a magnet is disposed on the vertical rail over substantially the entire length of the movement range of the vertical cursor. A magnet facing the magnet is attached to the magnet, and the vertical cursor is levitated with a predetermined gap with respect to the vertical cursor running surface of the vertical rail by magnetic interaction between the two magnets, and the vertical cursor and the vertical rail are A cursor guide mechanism in a rail-type flexible parallel periodic device, etc., characterized in that a permissible movement range is set between the vertical cursor and the vertical cursor in a direction perpendicular to the drawing surface. 2. A horizontal rail, a horizontal cursor attached to the horizontal rail so as to be movable along it, a vertical rail connected to the horizontal cursor, and a vertical cursor disposed movably along the vertical cursor running surface of the vertical rail. In a device for picking up a vertical cursor and a head connected to the vertical cursor, a magnet is disposed on the vertical rail over substantially the entire length of the movement range of the vertical cursor, and the vertical cursor is opposed to the magnet. A magnet is attached, and the vertical cursor is made to float with a predetermined gap with respect to the vertical cursor running surface of the vertical rail by magnetic interaction between the two magnets, and the vertical cursor is placed between the vertical cursor and the vertical rail. A permissible movement range is set so that the magnet can be moved in a direction perpendicular to the drawing surface, and friction is applied between the vertical cursor side and the vertical rail side to prevent contact between the two magnets. A cursor guide mechanism in a rail-type flexible parallel ruler device, etc., characterized in that a force reducing member is interposed.