KR960007361B1 - Ellipse compass - Google Patents

Abstract

The oval compasses wherein fixed magnet plates and rotary magnet plates are installed on the inner bottom of the lower case so as to oppositing each other; left and right rotating plates each installed on shafts of gears fixed on the rotary magent plates; left and right weights of a connecting rod inserted into guide grooves formed on one side of the left and right rotating plates to receive elasticity of a spring so the connecting rod turns along with the left and right rotating plates; left and right right-angled maintaining supports to which the connecting rod is inserted rectilinearly moving along a guide bar of the lower case and a right sidewall; a pantagraph connected to a coupling rod of the connecting rod and a protruding rod of the lower case; a rotating cap provided to one side of the upper case, and a saw-tooth on an insertion groove meshing with an outer saw tooth by an elastic piece; a screw bar with a left screw part and a right screw part and rotating by bevel gears; left and right reciprocating weights screwed along the screw bar; a control knob for rotating the bevel gear and a length control knob disposed on a rotating cap; a control plate with saw tooth on a shaft of the length control knob and the control plate's saw tooth meshing with or disengaged from the rotating cap's saw tooth; and a steel wire with a forward end winding on a fly wheel and connected to a right reciprocating weight through the left reciprocating weight and the rotating ball of the right moving weight.

Description

Ellipse Compasses

1 is an exploded perspective view of an elliptical compass.

2 is an assembled cross-sectional view of an elliptical compass.

3 is an enlarged view of the rotating cap portion of Figure 2, a is a bite state diagram to prevent any rotation of the rotary cap, b is a bite release state for the rotation of the rotation cap.

4 is an enlarged left and right reciprocating portion of FIG.

5 a and b are explanatory diagrams of the operating state of the wire length adjustment knob.

6 is a circular motion blindness of the connecting rod.

7 is a cross-sectional view of the installation state of the rotating magnetic plate and the stationary magnetic plate.

8 is a, b is an explanatory diagram of the shape adjustment state of the ellipse.

* Explanation of symbols for main parts of the drawings

1: compass body 2: upper case

2a: rotation cap insertion hole 2b: outer peripheral teeth

3: lower case 3a: right wall

4,5,6: gear 4a, 6a: shaft

7,7a: Left and right rotating magnet plate 8,8a: Left and right fixed magnet plate

9: left turn plate 9a: right turn plate

10,10a: guide groove 11,11a: left and right moving weight

11 ': fluorescent pin 11a': rotating ball

12: spring 13: connecting rod

14: inner right angle retainer 15: outer right angle retainer

16: guide rod 17: connecting rod

18: protrusion rod 19: pantograph

20: transparent scale plate 21: rotating cap

22: elastic piece 21a: outer peripheral insertion groove

21b: Cogs 21c: Cogs

23, 24, 25: bevel gear 26: screw rod

26a: left hand thread 26b: right hand thread

27: left reciprocating weight 28: right reciprocating weight

29: fixed guide rod 30: reciprocating interval adjustment knob

31: steel wire length adjustment knob 31a: axis

32: spring 33: control panel

33a: outer peripheral teeth 34: flywheel

35: steel wire

The present invention relates to oval compasses that can be constructed by freely adjusting the shape and size of the ellipse.

When drawing or designing various drawings, ellipses are often drawn on the drawing. Until now, it has been common to use elliptical holes to create the required elliptical drawing. It was operated by elliptical drawing by general compass or by using computer.

However, when using an elliptical hole, it is very expensive to have both elliptical shapes and many models of elliptical lifesavers of various sizes, and the shape or size of the ellipse is inevitably limited. Too many cases could not be drawn to fit exactly.

In addition, when the circular compass is used, only those who are familiar with the elliptical drawing method are possible, and since the drawing method is very cumbersome and requires skill, it is difficult to construct an ellipse of the correct shape and size, and an ellipse by a computer is involved. Even in the case of drawing, only a person who can use a computer can do it, and drawing is possible only in the place where the computer is installed, and in particular, it requires expensive equipment such as a computer and a printer. Was.

An object of the present invention is to provide an elliptical compass that can be easily constructed by freely adjusting the shape and size of the ellipse in the construction of the ellipse as described above.

When described in detail based on the accompanying drawings the technical configuration for the purpose of the present invention.

1 is an exploded perspective view showing the configuration of the present invention, wherein three gears 4, 5 (in the lower case 3 of the compass main body 1 separated into upper and lower case 2, 3) are shown. 6) are arranged to mesh with each other, two of the gears (4) (6) of the two of the three gears (4) (5) (6) rotate together with the rotating magnet plate (7) (7a), In the lower part of the rotor magnet plates 7 and 7a, the stationary magnet plates 8 and 8a are provided in the state facing the same polarities as the rotor magnet plates 7 and 7a so that the rotor magnet plates 7 and 7a are smooth. It is configured to be rotated.

In addition, the left and right rotary plates 9 and 9a are respectively provided by the shafts 4a and 6a on the upper sides of the gears 4 and 6 so as to rotate together with the gears 4 and 6, respectively. The left and right moving weights 11, 11a inserted into the guide grooves 10 (10a) formed in the rotary plates 9, 9a, respectively, are reciprocated with elasticity to push out by the spring 12. The connecting rod 13 connected to the left and right moving weights 11 and 11a is configured to rotate.

Inner and outer retainers 14 and 15 are respectively inserted into the connecting rod 13, and the retainers 14 and 15, respectively, are fixed to the lower case 3, respectively. It is inserted in the state intersecting the right wall (3a) of the right side (16) and the lower case (3) is configured to maintain an exact right angle with the upper and lower case (2) (3) during the rotational movement of the connecting rod (13), The connecting rod 17 is installed on the tip of the connecting rod 13 so as to be rotated up and down, and the pantograph 19 is adhered to the tip of the connecting rod 17 and the tip of the protruding rod 18 of the lower case 3. Doing. At this time, the protruding rod 18 of the lower case 3 is also arranged to be able to rotate up and down at its tip.

A transparent scale plate 20 is installed on the left side of the upper case 2, and a rotating cap 21 is installed on the right side of the upper case 2, which is formed in the outer peripheral inserting groove 21a of FIG. A tooth 21b is formed on the upper surface of the upper surface 2 so as to be drilled in the upper case 2 by the elastic piece 22 to be engaged with the outer peripheral teeth 2b of the rotation cap insertion hole 2a. In order to rotate the rotary cap 21, it is configured to press and release the teeth (2b) (21b) in the engaged state for the rotary cap 21, as shown in Figure b, and then rotate the rotary cap 21. Doing.

In addition, below the rotary cap 21, as shown in FIG. 4, a screw rod 26 which is rotated by the rotation operation of the bevel gears 23, 24, and 25 is installed. The left and right reciprocating vertebrae 27 and 28, which are formed by replacing the screw directions with the win screw part 26a and the right screw part 26b, are respectively symmetrically moved from side to side through the fixing guide bar 29, respectively. It is configured to narrow or widen the distance, by adjusting the bevel gears (23, 24, 25) to rotate the adjustment knob 30 and the wire length adjustment for adjusting the interval of the reciprocating weight (27, 28) The knob 31 is installed side by side at a suitable interval on the rotary cap 21, the steel wire length adjustment knob 31 is inserted into the shaft (31a) to have elasticity by the spring 32 control panel 33 The outer peripheral teeth 33a of the control knob 31 by engaging or leaving the teeth 21c formed on the rear surface of the rotating cap 21 It was made to enable forward and rotation, and the tip of the steel wire (35) wound on the flywheel 34 installed on the lower end of the shaft (31a) penetrates the left reciprocating weight (27) to the right moving weight on the connecting rod (13) It is configured to be connected to the right reciprocating weight 28 through (11a).

At this time, the right moving weight (11a) and the right reciprocating weight (28) on the connecting rod 13 by installing a rotary ball (11a ') that can rotate 360 ° so that the steel wire (5) is connected to it The flow of the 35 is configured to be smooth, and the left moving insect 11 is installed with a pin 11 'coated with a fluorescent material to check the shape of the ellipse to be drawn in advance through the transparent scale plate 20. It is configured to be.

The use state of the present invention will be described in more detail based on the attached drawings 1 and 2.

First, the left screw portion 26a of the screw rod 26 by rotating the bevel gears 2, 3, 24 and 25 by rotating in the left or right direction of the adjustment knob 30 so that the screw rod 26 is rotated. After adjusting the interval between the left and right reciprocating weights 27 and 28 coupled to the right-hand screw portion 26b to be narrowed or widened to maintain a predetermined interval, the wire length adjustment knob 31 as shown in FIG. Press the control knob 31 on the left or right side in a state where it is pushed out of the teeth 21c formed on the rear surface of the rotation cap 21 of the outer peripheral teeth 33a of the control panel 33 fixed to the shaft 31a. Pull or unwind the steel wires 35 wound on the steel wires 35 wound on the flywheel 34 to be rotated together while rotating to the right, and adjust the tension to a predetermined length as shown in FIG. (31) is released, the control panel (33) is raised by the spring force of the spring (32), and the outer peripheral teeth (3) 3a) is fixed to the teeth 21c on the back of the rotating cap 21, and then the length of the adjusted steel wire 35 is fixed. Then, the writing instrument inserted in the pantograph 19 is held and the elliptical drawing is started. The connecting rod 13 connected by the connecting rod 17 to the 19 moves in a circular motion according to the movement of the writing instrument.

That is, as shown in FIG. 6, the guide rod 16 and the right side wall 3a of the lower case 3 are moved horizontally together with the right angle support 14 and 15 inserted therein, and at the same time, the right angle is maintained. Since the circular motion of the connecting rod 13 becomes possible since the right and left move through the spheres 14 and 15, the left and right moving weights 11 and 11a of the connecting rod 13 are the left and right rotating plates 9. The left and right rotating plates 9 and 9a are rotated in the same direction while being guided in the state of being inserted into the guide grooves 10 and 10a of the 9a and the gear 4 together with the rotating plates 9 and 9a. (5) (6) is rotated, in which the gears 4 and 6 on both sides rotate in the same direction as the rotating plates 9 and 9a, as shown in FIG. The rotating magnet plates 7 and 7a to be rotated together with (6) are provided so as to face the same polarity as the lower stationary magnet plates 8 and 8a, so that the rotating magnets 7 and 7a are mutually repulsive. And high The magnets 8 and 8a are slightly floated to remove frictional forces during the rotation of the rotor magnets 7 and 7a so that the rotation is smoothly and smoothly maintained. The thickness of one side is thickened as a reference so that the weight is biased, and consequently, the smoother circular motion of the connecting rod 13 is helped, so that the elliptical drawing by the pantograph 19 is made very smooth.

As described above, the present invention provides a shape and a size of an ellipse, that is, a narrow and long ellipse, a wide and short ellipse, as illustrated in FIG. The length and width of the ellipse can be adjusted freely according to the degree of narrowing or widening the gap between the 27 and 28 and the length or length of the steel wire 35. A predetermined ellipse can be enlarged and reduced by the pantograph 19 so that any shape and size of ellipse can be accurately and easily constructed. In addition, since the volume of the compass body can be carried lightly, it is possible to construct the desired ellipse anytime and anywhere when necessary, so that the use is very convenient.

Claims (1)

Of the upper and lower cases (2) and (3) of the elliptical compass body (1), the stator magnet plates (8) (8a) and the rotating magnet plates (7) (7a) face the same polarity on the inner bottom of the lower case (3). The left and right rotating plates 9 and 9a are installed on the shafts 4a and 6a of the gears 4 and 6 which are installed in the state and fixed to the rotary magnetic plates 7 and 7a, and the left and right rotating plates 9 ( 9a) inserting the left and right moving weights 11 and 11a of the connecting rod 13 into the guide grooves 10 and 10a drilled on one side thereof, while receiving the elasticity of the spring 12, the connecting rod 13 is rotated to the left and right rotating plate ( 9) (9a) and the right and left right angle retainer 14, 15 inserted through the connecting rod 13, the guide rod 16 and the right wall (3a) of the lower case (3). The linear movement of the riding rod, and the pantograph 19 is axially connected to the distal end of the connecting rod 17 of the connecting rod 13 and the protruding rod 18 of the lower case 3, and rotates on one side of the upper case 2. Install the cap 21 and insert the outer peripheral groove 21a. The upper teeth 21b are elastically engaged with the outer peripheral teeth 2b of the rotary cap insertion hole 2a by the elastic pieces 22, and the left screw portion 26a and the lower portion of the rotary cap 21 are lowered. Left and right reciprocating weights (27) and (28), which are screwed together to be rotated by bevel gears (23), (24) and (25), are screwed into the right-hand threaded part (26b), where the screw rods (29) are fixed guide rods (29). ) To reciprocate and bevel gear (23) rotation adjustment knob 30 and steel wire length adjustment knob (31) side by side on the rotating cap (21) to have elastic force by the spring (32) The control panel 33 having the outer circumferential teeth 33a and the flywheel 34 are fixedly installed on the shaft 31a of the adjustment knob 31 for adjusting the length of one wire, and the outer circumferential teeth 33a of the control panel 33 are rotated caps. (21) is engaged or disengaged with the teeth 21c of the rear surface, the tip of the steel wire (35) wound on the flywheel 34 passes through the left reciprocating weight (27), the right moving weight (11a) of the connecting rod (13) ) Rotating ball (11a ') Compass for elliptical drawing, characterized in that configured to connect through the right reciprocating weight 28 through.