JP2946395B2 - Horizontal scale storage device for parallel ruler - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a parallel ruler having a horizontal scale.

[0002]

2. Description of the Related Art Conventionally, a parallel ruler is known in which a horizontal scale extending in the left-right direction of a drawing board is guided by rails on both sides of the drawing board and moves in parallel. In this parallel ruler, the horizontal scale is always located on the upper surface of the drawing board.

[0003]

However, in such a conventional parallel ruler, the horizontal scale is always present on the drawing board due to its structure, so that in some cases it may be a hindrance to work. Also, when something is put on the drawing board after the work is completed, the horizontal scale may be in the way. For this reason, there has been a demand for a parallel ruler that can be retracted to a position where the horizontal scale does not interfere with work or the like when unnecessary.

[0004] The present invention has been made in view of the above problems, and has a practical value as a parallel ruler that allows the horizontal scale to be retracted from the drawing surface and can respond to various demands of the user. The aim is to provide a parallel ruler that can be significantly improved.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a parallel ruler having a horizontal scale which is connected to a slider which is guided and moved by a rail of a drawing plate and which can move in parallel on the drawing surface . Large enough to hold a horizontal scale
That storage area is partitioned and formed, horizontal scale, is rotatable about the support shaft for connecting the slider, FIG plate back
It is characterized in that it can be rotated to the side and stored in the storage area .

[0006]

By rotating the horizontal scale around the support shaft, the horizontal scale located on the drawing board moves to a predetermined position on the back side of the drawing board, and the horizontal scale can be eliminated from the drawing board.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 to 3 show the overall appearance of a parallel ruler according to an embodiment of the present invention. The parallel ruler has a horizontal rail (scale plate) that can move in parallel.

A vertical rail 11 is attached to each of the left and right sides of a drawing board 10 for holding drafting paper (not shown). The vertical rail 11 is made of, for example, a lightweight aluminum material having a substantially C-shaped cross section, and both open ends thereof are closed by resin caps 12. On the near side (drawer side) of the drawing board 10,
For example, a tray 1 made of lightweight aluminum material having a substantially U-shaped cross section
3 is attached.

A pair of left and right truncated cone-shaped fixing legs 15 is attached to the near side of the back surface of the drawing board 10, and another pair of fixing legs 16 is attached at a position separated by a predetermined distance therefrom. At a position further away from the fixed leg 16,
A foldable variable leg 17 is attached. By adjusting the length of the variable leg 17, the drawing board 10 can be inclined.

On the drawing board 10, the vertical rails 1 on both sides thereof
1, a long horizontal rail 21 in the form of a long plate is disposed so as to intersect at right angles, and on the lower surface of the horizontal rail 21, a transparent acrylic elongate scale plate 22 which is useful for drawing straight lines.
However, it is attached so that the substantially lower half thereof partially overlaps. The scale plate 22 may include a series of scales for measuring dimensions.

As shown in FIG. 4, both ends of the horizontal rail 21 are fixed to free ends of scale arms 25 arranged on both sides of the drawing plate 10, respectively. The base end of the scale arm 25 is rotatably attached to sliders 26 on both sides of the drawing plate 10. As shown in FIG. 5, each slider 26 has a pair of guide rollers 27 that roll by engaging with the parallel facing edges 11 a of the vertical rail 11, and can reciprocate along the vertical rail 11. .

A wire W for synchronization of the two sliders 26 is hung parallel to two rotatable guide rollers 29 provided inside the vertical rails 11 on both sides of the drawing board 10 on the front side thereof. An endless loop of the wire W is formed by being wrapped around each one similar guide roller 30 (see FIG. 3) inside the back side of the wire 11. Each slider 26 has a bolt shaft 34 fixed to a chevron bracket 33 on the back side of the slider 26, and a collar 3 slidably mounted on the bolt shaft 34.
5 and an adjusting lever 37 screwed to the bolt shaft 34, and one wire W is passed between the bracket 33 and the collar 35 (see FIG. 7).

Adjustment lever 37 for fastening mechanism of slider 26
The wire W is pressed against the bracket 33 via the collar 35 by the tightening operation of
6 is integrally fixed. Thereby, the slider 26 and the horizontal rail 21 (scale plate 22) can be translated in synchronization in the same direction in accordance with the movement of the wire W. On the other hand, by loosening the adjustment lever 37 of the slider 26,
The fixed positional relationship with the slider 26 on the opposite side can be changed, so that the horizontal angle position of the scale plate 22 in the drawing plane can be changed steplessly within a range that does not hinder.

At the right end of the tray 13, as shown in FIG. 8, a bolt shaft 40 supported to penetrate the inverted U-shaped section 13a of the tray 13, and a nut plate 41 screwed to the bolt shaft 40. And a braking mechanism having a braking knob 42 fixed to the protruding end of the bolt shaft 40, and two wires W are passed between the inner surface of the inverted U-shaped section 13 a and the nut plate 41. Brake knob 4 of the brake mechanism of tray 13
By the tightening operation 2, the wire W is eventually fixed to the drawing board 10, so that the movement of the slider 26, and thus the scale plate 22, is completely fixed to the drawing board 10.

As described above, the horizontal rail 21 and the scale arms 25 integral with the horizontal rail 21 can rotate around the support shaft 45 of the slider 26 on both sides of the drawing plate (see FIG. 4). Therefore, as shown in FIG. 9, when the slider 26 is almost completely pulled toward the near side (the left hand side in FIG. 9) of the drawing plate 10, the horizontal rail 21 (the scale plate 22) is pulled about 27 degrees.
It can be positioned at the back of the drawing plate rotated by 0 degrees.
Then, after moving the horizontal rail 21 (scale plate 22) over the fixed leg 15 while maintaining the angular position, the horizontal rail 21 is rotated by about 90 degrees in the opposite direction.
In addition, the scale plate 22 can be completely accommodated between the fixed legs 15 and 16 in an inverted state.

As described above, according to the present embodiment, the horizontal rail (scale plate) can be rotated to easily and quickly be positioned at the back side of the drawing plate, and can be prevented from obstructing the fixed leg and the variable leg. It is configured so that it can be stored. For this reason, it is extremely convenient in the case of performing work without using the scale plate or in cleaning up after the work is completed.

[0017]

As described above, according to the present invention, the horizontal scale can be easily and quickly retracted from the drawing surface in order to meet various demands of the user, and the practical value as a parallel ruler is remarkably increased. The effect of being able to improve is obtained.

[Brief description of the drawings]

FIG. 1 is a plan view of a parallel ruler according to an embodiment of the present invention as viewed from above.

FIG. 2 is a front side view of the parallel ruler viewed from the draftsman side.

FIG. 3 is a right side view of the parallel ruler.

FIG. 4 is a perspective view of a main part of the parallel ruler.

FIG. 5 is a cross-sectional plan view of a main part of the parallel ruler.

FIG. 6 is a cross-sectional side view taken along line AA of FIG.

FIG. 7 is a sectional side view taken along the line BB of FIG. 5;

FIG. 8 is a sectional side view taken along the line CC of FIG. 5;

FIG. 9 is a diagram illustrating a movement locus of a scale plate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Drawing board 11 Vertical rail 15, 16 Fixed leg 21 Horizontal rail 22 Scale plate 25 Scale arm 26 Slider 27 Guide roller

Claims (1)

(57) [Claims] 1. A parallel ruler having a horizontal scale which is connected to a slider which is guided and moved by a rail of a drawing plate and which can move in parallel on a drawing plate surface .
The storage area is large enough to accommodate the
The horizontal scale is rotatable around a support shaft for connection with the slider, and rotates to the back side of the drawing plate.
The horizontal scale storage device in the parallel ruler , which can be stored in the storage area .