JP2560121Y2 - Parallel ruler device - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to a pair of vertical rails arranged on both sides of a drawing board, a vertical cursor movably attached to each of the vertical rails in conjunction with each other, and a pair of vertical cursors. A horizontal ruler provided on a cursor, wherein one of the vertical cursors is freely movable with respect to the other vertical cursor, and the horizontal ruler is moved by free movement of the other vertical cursor. The present invention relates to a parallel ruler device for adjusting the angle of the parallel ruler with respect to the vertical rail.

[0002]

2. Description of the Related Art A conventional parallel ruler is disclosed in Japanese Utility Model Laid-Open No. 59-1.
As disclosed in JP-A-40891, for changing the angle of a horizontal ruler, one of a pair of vertical cursors connected to each other through an interlocking mechanism can be freely moved with respect to the other vertical cursor. The clutch mechanism is provided on a transmission shaft constituting an interlocking mechanism behind the drawing plate, and a knob for operation thereof is provided on a lower side in front of the drawing plate.

[0003]

[Problems to be Solved by the Invention] As described above, if the knob for operating the clutch is provided on the drawing plate side,
Since the structure is complicated and the distance between the knob and the vertical cursor is large, it is inconvenient to change the angle of the horizontal ruler while operating the clutch, and the operability is extremely poor. The purpose of the present invention is to eliminate ruler defects.

[0004]

In order to achieve the above object, the present invention provides a pair of vertical rails 4 and 6 disposed on both sides of the drawing board 2 and a pair of vertical rails 4 and 6 respectively. A movement transmitting member rotatably stretched between the ends and arranged to move along the vertical rails 4 and 6 in conjunction with each other, and movably connected to each of the pair of vertical rails 4 and 6; Vertical cursors 22, 30 and vertical cursor 2
In a parallel ruler device comprising a horizontal ruler 34 slidably mounted between the vertical cursors 2 and 30, one of the vertical cursors 22 and 30 is moved along one vertical rail 6 of the movement transmitting member. The sliding member 38 is movable on the substrate 22a of the other vertical cursor 22 in a direction horizontal to the drawing board 2 surface and at right angles to the vertical rails 4 and 6. , And a support member 50 is fixed to the substrate 22a, a clutch plate 52 is disposed opposite to the support member 50, and the other of the movement transmitting members is provided between the clutch plate 52 and the support member 50. A portion 20a that moves along the vertical rail 4 is disposed, and the clutch plate 52 and the slide member 38 are connected to the clutch plate transmission shaft 5
1, a cam 62 having a pressing surface 62b and a pressing release surface 62a formed on the substrate 22a with respect to the slide member 38 so as to be rotatable, and the cam surface of the cam 62 faces the slide member 38. Then, a molding 64 is attached to the cam 62, and the clutch plate 52 is attached to the support member 5.
It is urged by a spring 54 in the direction of pressing against zero.

[Action]

[0005] Of the pair of vertical cursors 22 and 30, the molding 64 provided on the other vertical cursor 22 is rotated in a predetermined direction, and the pressing release surface 62a of the cam 62 is moved to the slide member 38
, The slide member 38 moves in a predetermined direction due to the elastic force of the spring 54, and the clutch plate 52 approaches the opposing support member 50. By this approach, the clutch plate 5
The movement transmitting member is clamped between the second and support members 50, and the other vertical cursor 22 is connected to the movement transmitting member.

By rotating the molding 64 in the reverse direction, the cam 62 is rotated.
When the pressing surface 62b is positioned on the slide member 38, the slide member 38
The clutch plate 52 moves in the opposite direction against the resilience of No. 4 and moves away from the support member 50. By this movement, the support member 50 and the clutch plate 5 with respect to the movement transmitting member
2 is released, and the other vertical cursor 22
Can freely move the vertical rail 4 with respect to one of the vertical cursors 30.
Is movable along.

In this state, the other vertical cursor 22
Is moved along the vertical rail 4 with respect to the one vertical cursor 30, so that the inclination angle of the horizontal ruler 34 with respect to the vertical rails 4 and 6 can be changed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of the present invention will be described below in detail with reference to the embodiments shown in the accompanying drawings. In FIG. 4, reference numeral 2 denotes a drawing board, which is supported by a support base. Hollow vertical rails 4 and 6 are fixed to both sides of the drawing board 2.

At the front end of each of the vertical rails 4, 6,
Belt pulleys 8, 1 that are inclined to the floor and have the same diameter
0 is rotatably supported. At the rear end of each of the vertical rails 4, 6, a pair of belt pulleys 12,
14 and 16, 18 are rotatably supported on the shaft. The pair of belt pulleys 12 and 14 and the pair of belt pulleys 1
6 and 18 are rotatably supported coaxially, and have the same diameter.

The belt pulleys 8, 10, 12, 14,
As shown in FIG. 5, a belt 20 is wrapped around the belts 16 and 18 endlessly with an appropriate tension, and portions 20a and 20b of the belt 20 parallel to the vertical rails 4 and 6.
Are configured to work together along the vertical rails 4 and 6 in the same direction. 22 is a left vertical cursor,
A pair of grooved guide rollers 26 and 28 are formed at upper and lower ends of a long hole 24 formed in an outer wall of the vertical rail 4 in parallel with each other.
Are movably connected via a.

Drawing 2 of substrate 22a of vertical cursor 22
The guide rollers 26 and 28 are rotatably supported on side surfaces substantially perpendicular to the surface. In the same configuration as the vertical cursor 22, a right cursor 30 is provided with a pair of grooved guide rollers (not shown) at upper and lower parallel edges of a long hole 32 formed in an outer wall of the vertical rail 6. Are movably connected via a.

As shown in FIG. 5, the right vertical cursor 30 is fixed to a portion 20b of the belt 20 by an appropriate fixing means. 34 is a horizontal ruler, one end of which is
The right vertical cursor 30 is rotatably supported by a known supporting means in a plane horizontal to the drawing board 2 surface.

The other end of the horizontal ruler 34 is rotatably supported on the left vertical cursor 22 by a well-known support means in a plane horizontal to the drawing board 2 plane, and a well-known support. By means, it is slidably supported along the longitudinal direction of the horizontal ruler 34.

The vertical cursor 22 of the horizontal ruler 34,
The support means for 30 moves the right vertical cursor 30 along the vertical rail 4 while keeping the right vertical cursor 30 stationary with respect to the vertical rail 6 and releasing the left vertical cursor 22 from the belt 20. By doing so, the horizontal ruler 34
Of the vertical rails 4 and 6 can be changed. The detailed structure is disclosed in Japanese Utility Model Laid-Open Publication No. 59-140891, and its illustration and description are omitted.

In FIG. 1, reference numeral 36 denotes the vertical cursor 22.
Is a slide support member fixedly mounted on one side surface of the substrate 22a.
It is slidably supported in a direction that is horizontal to the drawing board 2 and perpendicular to the longitudinal direction of the vertical rail 4.

The slide support structure of the slide member 38 includes an elongated hole 40 formed in a bottom plate of the slide member 38,
Pins 42 and 44 protruding from a slide support member 36 slidably fitted into the elongated hole 40, a long hole 46 provided through the slide support member 36, and slidably fitted into the elongated hole 46. Screw 4 screwed to the bottom plate of the sliding member 38
And 8. The head (not shown) of the screw 48 contacts the lower surface of the slide support member 36, thereby preventing the slide member 38 from moving upward with respect to the slide support member 36.

Reference numeral 50 denotes a belt supporting member fixed to the inner surface of the substrate 22a. A belt supporting portion 50a is formed on the belt supporting member 50 in parallel with the inner surface of the substrate 22a. Reference numeral 51 denotes a clutch transmission shaft, which is loosely fitted in a hole provided in the base plate 22a and slidably fitted in a hole provided in the support portion 50.

Both ends of the transmission shaft 52 are screwed into threaded holes formed in the rising portion of the slide member 38 and the clutch plate 52, respectively. Both ends of the transmission shaft 52 are connected to the slide member 38 and the clutch plate 52 by nuts. 52. A belt guide portion 52b is formed on the clutch plate 52.

A coil spring 54 is fitted into the transmission shaft 51, and the coil spring 54 is disposed between the slide member 38 and the support portion 50a in a compressed state. A guide portion 56 for releasing the belt is fixed to the clutch plate 52, and the guide portion 56 forms a recess 58 between the clutch plate 52 and the side surface of the clutch plate 52 for loosely fitting the belt 20. doing. Reference numeral 60 denotes a shaft that is rotatably supported by the substrate 22a, and a cylindrical cam 62 and a clutch operating molding 64 are fixed to the shaft.

The cam surface of the cam 62 faces the rising portion of the slide member 38. The portion 20a of the belt 20 is supported by a support portion 50a of the belt support member 50.
And the clutch plate 52 and in the recess 58.

Next, the operation of this embodiment will be described. The molding 64 is rotated in a predetermined direction, and the pressing release surface 6 of the cam 62 is rotated.
2, the slide member 38 moves leftward in FIG. 2 by the elastic force of the spring 54, and the clutch plate 52 is supported by the belt 20 via the belt 20. It is crimped to the member 50. Due to this pressure bonding, the portion 20a of the belt 20 is clamped by the clutch plate 52 and the belt support member 50, and the left vertical cursor 22
Via the belt support member 50 and the clutch plate 52,
It is fixed to the portion 20a of the belt 20.

In this state, when the horizontal ruler 34 is pressed by a manual operation force in the front-rear direction of the drawing board 2 along the drawing board 2, the left and right vertical cursors 22, 30 are mutually moved along the vertical rails 4, 6. The horizontal ruler 34 can be moved in parallel to move to the desired position on the drawing board 2 in parallel.

The right vertical cursor 3 of the left vertical cursor 22
When the left vertical cursor 22 is moved along the vertical rails 4 with the right vertical cursor 30 stationary while releasing the interlocking state with respect to 0, and the inclination angle of the horizontal ruler 34 with respect to the vertical rails 4 and 6 is to be adjusted. First, the molding 64 is rotated in the reverse direction so that the pressing surface 62b of the cam 62 faces the slide member 38 as shown in FIG.

The slide member 38 is provided on the pressing surface 6 of the cam 62.
As shown in FIG. 3, the clutch plate 52 is pushed rightward against the elastic force of the spring 54 so that the clutch plate 52 is
It moves in a direction away from zero, and the pressure applied to the belt 20 by the clutch plate 52 is released.

At the same time, in conjunction with the rightward movement of the clutch plate 52 in FIG. 3, the belt release guide 56 moves rightward, and presses the portion 20a of the belt 20 rightward. Is separated from the belt supporting surface of the belt supporting member 50. In the above state, the connection between the vertical cursor 22 and the belt 20 is released, and the vertical cursor 22 is freely movable along the vertical rail 4 irrespective of the belt 20.

In the above embodiment, a pair of vertical cursors 2
Although the belt 20 is used as the movement transmitting member for interlocking the gears 2 and 30, a flexible wire rope 66 may be used as shown in FIG. In FIG. 6, rubbers 70 and 72 are fixedly provided in a semicircular groove portion of the belt support member 70 which abuts the wire rope 66 on the clutch plate 68 for pressing the wire rope 66. In the figure, 74
Is a spring, and 76 is a clutch plate transmission shaft.

Pulleys are arranged at both ends of the vertical rails 4 and 6, respectively. A pair of pulleys at both ends of each of the vertical rails 4 and 6 are wrapped with an endless belt or a wire rope. A pulley at one end and a pulley at one end of the other vertical rail 6 are connected by a transmission shaft to form a pair of vertical cursors 2.
It is good also as composition which interlocks 2 and 30 mutually.

[0028]

The present invention is constructed as described above, so that the angle of the horizontal ruler can be easily changed, and since the mechanism is simple, it can be manufactured at low cost.

[Brief description of the drawings]

FIG. 1 is an external view of a main part.

FIG. 2 is a plan view of a main part.

FIG. 3 is a plan view of a main part.

FIG. 4 is an overall external view.

FIG. 5 is an explanatory diagram showing an interlocking mechanism of a vertical cursor.

FIG. 6 is a sectional view showing another embodiment.

[Explanation of symbols]

 2 drawing board 4 vertical rail 6 vertical rail 8 pulley 10 pulley 12 pulley 14 pulley 16 pulley 18 pulley 20 belt 22 vertical cursor 24 long hole 26 guide roller 28 guide roller 30 vertical cursor 32 long hole 34 horizontal ruler 36 slide support member 38 slide Member 40 Long hole 42 Pin 44 Pin 46 Long hole 48 Screw 50 Belt support member 51 Transmission shaft 52 Clutch plate 54 Coil spring 56 Guide portion 58 Depressed portion 60 Shaft body 62 Cam 64 Mold 66 Wire rope 68 Clutch plate 70 Rubber 72 Rubber 74 Spring 76 Clutch transmission shaft

Claims (2)

(57) [Scope of request for utility model registration] 1. A pair of vertical rails (4) and (6) disposed on both sides of a drawing board (2), and the pair of vertical rails (4).
(6) a movement transmitting member rotatably stretched between the front and rear ends of the pair of vertical rails (4) and (6), which are arranged to move along the vertical rails (4) and (6) in conjunction with each other; 4) A vertical cursor (22) (30) movably connected to each of (6), and the vertical cursors (22) (3)
0) in a parallel ruler device comprising a horizontal ruler (34) erected so as to be tiltable between the vertical cursors (22) and (3).
0), one of the vertical cursors (30) can be connected to a portion (20b) of the movement transmitting member that moves along one of the vertical rails (6), and the other vertical cursor (2) can be connected.
The slide member (38) is supported on the substrate (22a) of (2) in a direction that is horizontal to the plane of the drawing plate (2) and is movable in a direction perpendicular to the vertical rails (4) and (6). (22
a) a supporting member (50) is fixedly mounted on the supporting member (50);
The clutch plate (52) is disposed to face the clutch plate (5).
A portion (20) of the movement transmitting member, which moves along the other vertical rail (4) between the support member (50) and the support member (50);
a) is arranged, and the clutch plate (52) and the slide member (38) are connected by a clutch plate transmission shaft (51);
A cam (62) having a pressing surface (62b) and a pressing release surface (62a) formed on the substrate (22a) with respect to the slide member (38) is rotatably supported, and a cam surface of the cam (62) is provided. Is disposed opposite to the slide member (38), a molding (64) is attached to the cam (62), and the clutch plate (52) is urged by a spring (54) in a direction of pressing the clutch plate (52) against the support member (50). A parallel ruler device characterized in that: 2. A release guide portion ( 56) is provided on the clutch plate (52) to move in conjunction therewith, and a direction in which the clutch plate (52) separates from the support member (50). When moving to the support member (50), the movement transmitting member between the support member (50) and the clutch plate (52) is moved to
The parallel ruler device according to claim 1, wherein the parallel ruler device is separated from the parallel ruler.