JP2512248Y2 - Oval drafter - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial application] The present invention is an ellipse that allows you to draw an ellipse easily by freely selecting an ellipse with various dimensional ratios of major axis and minor axis, as if you were drawing a circle with a compass of a drafting machine. Regarding the drafting machine.

[0002]

2. Description of the Related Art Conventionally, an ellipse is drawn by preparing a large number of templates, and selecting a template having a major axis and a minor axis that match each other. See also 58-1
Elliptic compasses such as those disclosed in Japanese Patent No. 40791 and Japanese Utility Model Laid-Open No. 57-199495 have been known.

[0003]

However, in the conventional method of drawing an ellipse using a template, a large number of ellipses cannot be drawn unless a large number of templates are prepared, and it is difficult to use the crow mouth of the drafting machine. There was a problem.

Further, the elliptical compass as disclosed in Japanese Utility Model Laid-Open No. 58-140791 and Japanese Utility Model Laid-Open No. 57-199495 is generally difficult to handle, and lacks operational stability of the compass so that a beautiful ellipse cannot be drawn. There was a problem. That is, it is difficult to easily and smoothly adjust the angle of the ellipse when drawing an ellipse, and there is a problem that the holding stability of the slide portion during the operation of using each member cannot be ensured.

The present invention intends to provide an ellipse drafting machine which solves all the above problems.

[0006]

In order to solve the above-mentioned problems, in the ellipse drafting machine according to the present invention, a shaft needle C is projected from the lower end of the base cylinder A, and near the upper end of the base cylinder A. The upper rotor 1 is rotatably wound, and the lower rotor 2 is rotatably wound in the vicinity of the lower end of the basic cylinder A. The upper rotor 1 and the lower rotor 2 are provided with a U-shaped inductor 7 between them. A vertical guide 8 is hung between the horizontal parts of the U-shaped guide 7, and both ends of the vertical guide 8 are guided by two horizontal parts of the U-shaped guide 7. An upper left and right slide interlocking body 9 and a lower left and right slide interlocking body 10 which are slidable in the horizontal direction are attached, and an angle setting base rod rod 6 is formed in the vicinity of the central portion of the base rod cylinder A so as to be orthogonal to the base rod cylinder A. It is inserted so that it can roll, and the top of the ring-shaped true circle rotation guide fixed body is attached to the tip of this angle setting base rod 6 Is fixed and the basic cylindrical body A is positioned at the center point of the upper part 4 of the ring-shaped true circular rotation induction fixed body, and a semi-arcuate angle is set on the upper surface of the upper part 4 of the ring-shaped perfect circular rotation induction fixed body. The rotating body 3 is attached, the angle setting rotating body 3 is slidably inserted into the basic shaft cylindrical body, and an angle setting fixing screw for holding and fixing the inclined position of the angle setting rotating body 3 at a predetermined position of the basic shaft cylindrical body A. E is attached, the ring-shaped true circular rotary body 5 is rotatably locked to the upper part 4 of the ring-shaped true circular rotary fixed body, and the spherical portion of the universal angle connector 12 fixed to the ring-shaped true circular rotary body 5 is fixed. Is locked to the vertical slide interlocking body 11 that is slidably wound around the vertical guide 8, and the writing instrument 14 can be attached to the lower left and right slide interlocking body 10 in a state in which the major axis or minor axis of the ellipse can be adjusted. And connect it freely with the axis needle C 12 and a vertical slide interlocking member and the writing instrument is characterized in that positioned on the same axis linear.

[0007]

According to the ellipse drafting machine of the present invention described above, the shaft needle C at the tip of the base cylinder A is erected vertically on a drawing sheet or the like,
After loosening the angle setting fixing screw E to adjust the position of the angle setting rotating body 3, the angle setting fixing screw E is tightened again.

At the time of adjusting the angle setting rotary body 3, the ring-shaped perfect circular rotation induction fixed body upper part 4 is the angle setting base rod round bar body 6.
And the ring-shaped true circle rotating body 5 is also tilted together with the movement, and the vertical slide interlocking body 11 attached to the universal angle connecting body 12 is pulled in the direction in which it comes in contact with and separates from the base cylinder A. It is pressed and pushed.

As a result, the vertical dielectric 8 around which the vertical slide interlocking body 11 is wound also slides in the direction toward and away from the basic columnar cylinder A, so that the upper left and right slide interlocking bodies 9 and the lower left and right slide interlocking bodies. 10 is a vertical derivative 8
In accordance with the slide of, the horizontal portion of the U-shaped derivative 7 is moved in the direction of approaching / separating from / to the basic cylindrical body A (that is, the direction of adjusting the major axis or minor axis of the ellipse).

When the knob or the like of the upper rotary body 1 is rotated in this state, the vertical inductor 8 draws an elliptical locus, so that an ellipse can be easily drawn by a writing instrument attached thereto. The position of the writing instrument can be adjusted by adjusting the long diameter setting fixing screw 17 or the like.

[0011]

EXAMPLES The present invention will now be described in detail with reference to examples, but the present invention is not limited to these.

In the present invention, the material of each part is made of synthetic resin or an appropriate metal such as aluminum alloy or stainless steel.
First, the shaft needle C is attached to the lower end of the base cylinder A corresponding to the shaft of the compass by appropriate means.

In the vicinity of the upper end of the basic cylindrical body A, a cylindrical upper rotating body 1 is wound so as to be rotatable and unable to move up and down. The vertical movement here means a structure that does not drop more than a certain height when drawing an ellipse, and as one example, a lowering prevention piece B that fulfills a stopper function as shown in FIG. It is also possible to provide it in the above position, and there is no problem even if it is slid above it. Further, the upper rotary body 1 may be provided with a knob having an appropriate shape so as to be convenient for drawing an ellipse.

A lower rotary body 2 is rotatably wound around the lower end of the base cylinder A. This lower rotating body 2
As will be described later, since the upper rotary body 1 is connected to the upper rotary body 1, the upper rotary body 1 is configured not to move up and down.
It does not move up and down like the upper rotor.

Next, the above-mentioned upper rotary body 1 and lower rotary body 2
A U-shaped derivative 7 is hung between them. The U-shaped derivative 7 is composed of two horizontal portions and one vertical portion, and a vertical derivative 8 is hung between the two horizontal portions. Further, at the upper and lower ends of the vertical dielectric 8, a substantially T-shaped upper left and right slide interlocking body 9 is slidable in the horizontal direction by being guided by two horizontal parts of the U-shaped dielectric 7.
And the lower left and right slide interlocking body 10 are integrally attached. The upper and lower slide interlocking bodies 9 and the lower left and right slide interlocking bodies 10 have a tubular slide portion, which is slidably attached so as to be wound around two horizontal portions of the U-shaped derivative 7, and thus is vertically attached. The dielectric material 8 can freely slide in the left-right direction via a pair of left and right slide interlocking bodies 9, 10.

Further, in the vicinity of the central portion of the basic cylindrical body A,
An angle setting base rod rod 6 which is orthogonal to the base columnar body A is rotatably inserted. A ring-shaped perfect circular rotation induction fixed body upper part 4 is fixed to the tip end of the angle setting base circular rod body 6 by brazing or the like. A is located. For this reason, the base columnar body A is surrounded by the ring-shaped perfect circular rotation induction fixed body upper portion 4.

An angle setting rotary member 3 made of a semi-arcuate wire rod or the like is attached to the upper surface of the ring-shaped perfect circular rotation induction fixed member upper portion 4 in a diametrical direction. It is slidably inserted into the hole. An angle setting fixing screw E for holding and fixing the angle setting rotating body 3 at a desired inclined position is attached to the side of the hole forming portion of the basic cylinder A. Therefore, when the angle setting fixing screw E is loosened and the angle setting rotating body 3 is moved to an appropriate position, the ring-shaped perfect circular rotation induction fixed body upper part 4 swings and rotates about the angle setting base rod rod 6 as a central axis. Then, similarly, the ring-shaped perfect circular rotary body 5 also swings and rotates. In the figure, reference numeral 18 is a lower portion of the ring-shaped perfect circular rotation guide fixed body, and 19 is an angle setting rotary body fixed nut.

A free angle connecting body 12 is fixed to the ring-shaped perfect circular rotating body 5, and a vertical slide interlocking body in which a spherical portion of the free angle connecting body 12 is slidably wound around the vertical guide member 8. It is locked to 11. For this reason,
Corresponding to the swinging state of the ring-shaped perfect circular rotary body 5, the vertical slide interlocking body 11 is guided by the vertical guide 8 and slides in the vertical direction.

When the vertical slide interlocking body 11 slides in the vertical direction in this way, the vertical slide interlocking body 11 comes into contact with and separates from the basic columnar body A, and as a result, the vertical guide member. 8 comes into contact with and separates from the base cylinder A. The upper and lower slide interlocking bodies 9 and the lower left and right slide interlocking bodies 10 are provided at the upper and lower ends of the vertical dielectric 8.
Is attached, the right and left slides of the vertical guide 8 can be smoothly performed.

Here, a long diameter setting fixing screw 17 and a writing instrument mounting body 13 are attached to the lower portion of the lower left and right slide interlocking body 10, and the writing instrument mounting screw portions 15 and 16 of the writing instrument mounting body 13 are used to write instruments. 14 is attached so that the major axis or minor axis of the ellipse can be adjusted.

[0021]

As described above, according to the present invention, the ring-shaped perfect circular rotary body locked in a rotatable state is stably supported at four points by the locking piece D and the angle setting rotary body. Since it is stably supported by the upper part 4 of the perfect circular rotation induction fixed body in a rotatable state, there is an excellent effect that an ellipse can be stably drawn with extremely smooth operation.

[Brief description of drawings]

FIG. 1 is a front perspective view of an ellipse drafter of the present invention.

FIG. 2 is a cross-sectional view of essential parts of an angle setting rotary body, an upper portion of a ring-shaped true circular rotation induction fixed body, a ring-shaped true circular rotary body, and a universal angle connecting body of the present invention.

FIG. 3 is a plan view of the target portion of the previous figure.

FIG. 4 is an enlarged perspective view of an upper left / right slide interlocking body.

FIG. 5 is an enlarged perspective view of a vertical slide interlocking body.

FIG. 6 is an enlarged perspective view of a universal angle connector and a spherical portion.

FIG. 7 is an enlarged perspective view of a lower left and right slide interlocking body and a long diameter setting fixing screw.

FIG. 8 is an enlarged perspective view of a writing instrument mounting body and a writing instrument.

[Explanation of symbols]

 A Base cylinder Cylindrical body B Fall prevention piece C Shaft needle D Locking piece E Angle setting fixing screw 1 Upper rotating body 2 Lower rotating body 3 Angle setting rotating body 4 Ring-shaped perfect circular rotation induction fixed body Upper part 5 Ring-shaped perfect circular rotating body 6 Angle setting base rod rod 7 C-shaped derivative 8 Vertical derivative 9 Upper left and right slide interlocking body 10 Lower left and right slide interlocking body 11 Vertical slide interlocking body 12 Universal angle coupling body 13 Writing instrument mounting body 14 Writing instrument 15, 16 Writing instrument attachment Screw part 17 Long diameter setting fixing screw 18 Ring-shaped true circular rotation induction fixed body lower part 19 Angle setting rotating body fixing nut

Claims (1)

(57) [Scope of utility model registration request] 1. A shaft needle C is projectingly provided on a lower end of a base cylinder A.
Only rotate the upper rotating body 1 near the upper end of this basic cylinder A
It is freely wound, and a lower rotating body is provided near the lower end of the basic cylinder A.
2 is rotatably wound between the upper rotary body 1 and the lower rotary body 2.
The U-shaped derivative 7 is hung on the
A vertical dielectric 8 is hung between the two vertical dielectrics 8.
At the end, the water is guided by the two horizontal parts of the U-shaped derivative 7.
Upper left and right slide interlocking body 9 that can slide in the horizontal direction
And the lower left and right slide interlocking body 10 are attached, and the base circle
Angle is set in the vicinity of the central part of the pillar A so as to be orthogonal to the basic cylinder A
The base round bar 6 is rotatably inserted and the angle setting base round
Attach the ring-shaped perfect circular rotation induction fixed body upper part 4 to the tip part of the rod body 6.
At the center of the upper part 4 of the ring-shaped perfect circular rotation induction fixed body
Position the base cylinder A, and rotate the ring
Half-arc angle setting rotation in the diameter direction of the upper surface of the upper body 4
The body 3 is attached, and the angle setting rotary body 3 is attached to the base cylinder.
Is slidably inserted into the main shaft cylindrical body A at a predetermined position.
Angle setting Angle for holding and fixing the tilt position of the rotating body 3
Attach the setting fixing screw E and fix the ring-shaped perfect circular rotation induction
A ring-shaped perfect circular rotating body 5 is rotatably locked to the upper body 4 of the fixed body.
Then, the free angle connection is fixed to this ring-shaped perfect circular rotating body 5.
The spherical part of the body 12 can be slid onto the vertical guide 8
The upper and lower slide interlocking body 11 wound around the
The writing tool 14 is attached to the lower left and right slide interlocking body 10 and has an elliptical length.
Axial needle C
And an adjustable angle connector 12, a vertical slide interlocking member, and a writing instrument
An ellipse drafting machine characterized in that are positioned on the same axis .