JPH08156493A - Horizontal scale storage device in parallel ruler - Google Patents

Abstract

PURPOSE: To remarkably increase practical value as a parallel ruler by realizing such parallel ruler as a horizontal scale, etc., is retreated to the position noninterfering with the other work. CONSTITUTION: A scale board 22 is connected to sliders 26 which are guided and moved by vertical rails 11 of a drawing board 10. The scale board 22 is moved in parallel on the face of the drawing board and freely turned around the supporting shaftes 45 for connection with the sliders 26 through scale arms 25 unified with the scale board 22. The scale board 22 is rotated to a prescribed position on the rear side of the drawing board 10 and evacuated from the face of the drawing board.

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 to move in parallel. In this parallel ruler, the horizontal scale is always located on the upper surface of the drawing board.

[0003]

However, in the conventional parallel ruler, the horizontal scale is always present on the drawing board due to its structure, which sometimes obstructs the work. Further, when something is placed on the drawing board after the work is finished, the horizontal scale may be an obstacle. 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.

The present invention has been made in view of the above problems, and has a practical value as a parallel ruler in which the horizontal scale can be retracted from the drawing board surface and can meet various demands of the user. The purpose is to provide a parallel ruler that can be significantly improved.

[0005]

SUMMARY OF THE INVENTION The present invention provides a parallel ruler comprising a horizontal scale which is connected to a slider which is guided and moved by a rail of a drawing board and which can move in parallel on the surface of the drawing board. It is characterized in that it is rotatable around a support shaft for connection with a slider and rotates to a predetermined position on the back side of the drawing board.

[0006]

By rotating the horizontal scale about 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 removed from the drawing board.

[0007]

The present invention will be described below with reference to illustrated embodiments. 1 to 3 show the overall appearance of a parallel ruler according to an embodiment of the present invention, and the parallel ruler includes horizontal rails (scale plates) that can move in parallel.

Vertical rails 11 are attached to both left and right sides of a drawing board 10 for holding drawing 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 front side (drawer side) of the drawing board 10,
For example, a tray 1 made of lightweight aluminum frame with a generally U-shaped cross section
3 is attached.

A pair of left and right frustoconical fixing legs 15 are attached to the front side of the back surface of the drawing board 10, and another pair of fixing legs 16 are attached at positions separated by a predetermined distance therefrom. At a position further away from this fixed leg 16,
A foldable variable leg 17 is attached. The board 10 can be tilted by adjusting the length of the variable leg 17.

On the drawing board 10, vertical rails 1 on both sides thereof are provided.
1, a long plate-shaped horizontal rail 21 is arranged so as to intersect with 1 at a right angle, and on the lower surface of this horizontal rail 21, a slender scale plate 22 made of a transparent acrylic material which is useful for drawing a straight line.
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.

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

The wires W for synchronization of the two sliders 26 are hung in parallel on two rotatable guide rollers 29 provided inside the front side of the vertical rails 11 on both sides of the drawing board 10 in parallel. The endless loop of the wire W is formed by being hung on each one of the same guide rollers 30 (see FIG. 3) inside the inner side of the wire 11. Each slider 26 includes a bolt shaft 34 fixed to a mountain-shaped 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 of the fastening mechanism of slider 26
The wire W is pressed against the bracket 33 via the collar 35 by the tightening operation of the wire W
6 is integrally fixed. This allows the slider 26 and the horizontal rail 21 (scale plate 22) to move in parallel in the same direction in synchronization 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 angular position of the scale plate 22 in the plane of the drawing plate can be changed steplessly within a range that does not hinder.

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

As described above, the horizontal rail 21 and both scale arms 25 integrated with the horizontal rail 21 can rotate around the support shafts 45 of the sliders 26 on both sides of the drawing board (see FIG. 4). Therefore, as shown in FIG. 9, when the slider 26 is pulled almost completely to the front side (left hand side in the figure) of the drawing board 10, the horizontal rail 21 (scale plate 22) is moved to about 27 mm.
It can be located at the back side of the board rotated by 0 degrees.
Then, after moving the horizontal rail 21 (scale plate 22) beyond the fixed leg 15 in the angular position, the horizontal rail 21 is rotated about 90 degrees in the opposite direction.
Also, the scale plate 22 can be completely accommodated between the fixed legs 15 and 16 in the inverted state.

As described above, in this embodiment, the horizontal rail (scale plate) can be rotated to easily and quickly position it on the back side of the drawing board, and it should not interfere with the fixed leg or the variable leg. It is configured to be stored. For this reason, it is extremely convenient when performing work without using the scale plate or when 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 board surface in order to meet various demands of the user, and the practical value as a parallel ruler is remarkably high. The effect that it can be improved is obtained.

[Brief description of drawings]

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

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

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

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

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

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

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

8 is a cross-sectional side view taken along the line CC of FIG.

FIG. 9 is a diagram showing a movement trajectory of a scale plate.

[Explanation of symbols]

 10 Drawing plate 11 Vertical rails 15 and 16 Fixed legs 21 Horizontal rail 22 Scale plate 25 Scale arm 26 Slider 27 Guide roller

Claims (1)

[Claims] 1. A parallel ruler comprising a horizontal scale which is connected to a slider which is guided and moved by a rail of a drawing board and which can move in parallel on the surface of the drawing board, wherein the horizontal scale is for connection with the slider. A horizontal scale storage device in a parallel ruler, which is rotatable around a support shaft of the plate and rotates to a predetermined position on the back side of the drawing board.