JPH07132470A - Motor-driven plotting and working instrument - Google Patents

Abstract

PURPOSE:To draw various figures such as sodding form or stone masonary form, etc., and rift easily, positively and rapidly by rotating eccentric cams by a motor though orthogonal gears, and reciprocating a movement adjusting body protrusively provided with a holder part. CONSTITUTION:A gear 8 is rotatably fitted to the end part of a driving shaft 7 direct-coupled to a motor 3 with a dry battery as power source, and a gear 8' meshed at a right angle with the gear 8 is fitted to a shaft rod 10 erected at a bearing part 9. Side wall plate parts 14, 15 bent parallelly in lateral symmetry are extendedly provided at both lateral end parts of a horizontal top wall part 13, and a movement adjusting body 12 with symmetrical elliptic insert holes is formed at both side wall plate parts 14, 15. The insert holes of the movement adjusting body 12 are pierced with the shaft rod 10, and eccentric cams 11 rotatably fitted to the shaft rod 10 are fittingly inserted into the insert holes. Various holders such as a pencil holder and a knife holder are then inserted alternately and removably into a holder part 18 protrusively provided at the horizontal top wall part 13.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to the field of electric drawing and machine tools.

[0002]

2. Description of the Related Art Conventionally, in order to draw turf, stones, shadow lines, etc., the core of a pencil or the pen tip of a drawing pen is moved vertically by alternately moving fingers. Furthermore, work such as pencil sharpening, paper cutting, and deburring were individually processed, and none of them could handle drawing and work with one tool.

[0003]

Conventionally, a pencil or a drawing pen is alternately moved in the vertical direction with fingers to draw a grass pattern, a stone pattern or a shadow line. For this reason, in order to draw patterns such as grass and stone on the drawing, it was necessary to work while alternately moving the fingers in the vertical direction and innumerably. Therefore, it was troublesome and complicated, and the work efficiency was not improved.

However, according to the present invention, it is possible to perform the work very simply, reliably, and quickly by simply grasping the entire instrument by fingers with the electric type.

Further, in addition to the above-mentioned drawing, a design knife can be attached to automatically perform paper cutting, deburring, dusting work of engraving, etc.
It also has the advantage that it can be used in combination with the above-mentioned drawing work.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a gear is attached to an end of a drive shaft directly connected to a motor which uses a dry battery as a power source, and a gear which meshes at right angles with the gear is installed on a bearing portion. Attached to the shaft rod, the left and right ends of the horizontal ceiling wall are symmetrical, and the side wall plates that bend in parallel are extended, and the both side wall plates are symmetrically inserted into an elliptical shape. A movement adjusting body having a hole is formed, the insertion hole of the movement adjusting body is passed through the shaft rod, and an eccentric cam axially attached to the shaft rod is fitted into the insertion hole, and a horizontal top wall portion is formed. The electric drawing and the machine tool are characterized in that a pencil holder, a knife holder, a clip type holder and the like are alternately attached to and detached from the protruding holder portion.

[0007]

The operation of the present invention will be described below.

First, the switch is turned on to adjust the speed adjusting knob. As a result, the driving force of the motor is transmitted to both gears via the drive shaft. Then, an eccentric cam coaxial with the shaft rod that is axially attached to the gear that meshes at a right angle rotates the inner peripheral edge portion of the elliptical insertion hole in proportion to the rotation of the shaft rod. Due to the above-mentioned rotation, the movement adjusting body is alternately moved continuously in the front-back direction.

As described above, when the movement adjuster moves in the front-rear direction, the holder part moves proportionally continuously in the up-down direction. Therefore, in the case where the holder is a pencil, Can very easily draw and plot grass and stones.

Further, when the design knife is attached, various works such as pencil sharpening, paper cutting, deburring, and dusting work at the time of engraving can be performed.

By using the drawing pen by mounting it through a clip type holder, it is possible to draw a drawing for various purposes.

As described above, by mounting the holders that meet various purposes, it is possible to perform drawing and working respectively.

[0013]

EXAMPLES Examples of the present invention will be described below.

Reference numeral a is an electric drawing and machine tool of the present invention, which has the following structure.

Reference numeral 1 is a case body, 2 is a switch attached to the outside of the case body 1, and 3 is a motor built in the case body 1. Reference numeral 4 is a dry battery built in the case body 1, reference numeral 5 is a speed adjusting knob, and reference numeral 6 is a speed adjusting switch. Reference numeral 7 is a drive shaft attached to the motor 3, 8 is a gear attached to the end of the drive shaft 7, and 9 is a bearing portion for holding the motor 3 inside the case body 1. Reference numeral 10 is a shaft rod mounted on a bearing portion 9, and a gear 8'which meshes with the gear 8 at a right angle is axially mounted on the shaft rod 10. Further, an eccentric cam 11 is axially attached to the shaft rod 10.

Reference numeral 12 is a movement adjuster having the following structure. Left and right side wall plate portions 14 and 15 which are bent in parallel with each other are symmetrically provided at both left and right end portions of a horizontal ceiling wall portion 13 having a width approximately equal to the width of the bearing portion 9. Then, elliptical insertion holes 16 are formed symmetrically in both side wall plate portions 14 and 15.

The eccentric cam 11 is always inserted into the insertion hole 16 for assembly. 18 is a horizontal ceiling wall 13
It is a holder part that is projected at a right angle to. Reference numeral 19 is a fitting insertion portion that constitutes the holder portion 18, and 20 is a screw.

Reference numeral 21 is a pencil holder for holding a pencil lead 22, 23 is a knife holder for holding a design knife 24, and 25 is a clip type holder for holding a drawing pen 26.

As described above, the drawing and the work tool attached to the holder 18 are not limited. And I omitted the code.

Numeral 27 is a lawn pattern drawn on the drawing 28.

[0021]

[Effect] The present invention has the following effects.

According to the present invention, the driving force of the motor is caused to rotate the eccentric cam via the two gears, and the eccentric cam is rotated at the inner peripheral edge of the elliptical insertion hole of the movement adjusting body projecting the holder. Since the eccentric cam alternately reciprocates in the up and down directions of the adjusting body, there is an advantage that drawing of grass, stones, etc. can be performed very easily, reliably and quickly.

Further, according to the present invention, a tool is attached to the protruding holder part and the motor is driven to cause the holder part to reciprocate up and down and in both directions alternately. In addition, there is an advantage that it can be surely performed.

Further, the instrument of the present invention has the excellent advantage of two birds with one stone, which can perform both drawing and working as described above.

[Brief description of drawings]

FIG. 1 is a perspective view of an electric drawing and machine tool of the present invention.

FIG. 2 is a vertical cross-sectional view of the same device.

FIG. 3 is a partially cutaway enlarged vertical plan view of the same part.

FIG. 4 is a partially cutaway enlarged side view of the main part.

FIG. 5 is a front view of a pencil holder used in the same instrument.

FIG. 6 is a front view of a design knife holder used in the same device.

FIG. 7 is a front view of a clip-type holder used for the device.

FIG. 8 is a plan view of a drawn state.

[Explanation of symbols]

a ... Electric drawing and machine tool 1 ... Case body 2 ... Switch 3 ... Motor 4 ... Dry battery 5 ... Speed control knob 6 ... Speed control switch 7 ... Drive axis
8, 8 '... Gear 9 ... Bearing 10 ... Shaft rod 11 ... Eccentric cam 12 ... Movement adjustment body 13 ... Horizontal ceiling wall 14, 15 ... Left and right sides Wall plate portion 16 ... Insertion hole 18 ... Holder portion 19 ... Fitting insertion portion 20
..Screws 21 ... Pencil holder 22 ... Pencil lead 23 ... Knife holder 24 ... Design knife 25 ... Clip type holder 26 ... Drafting pen 27 ... Grass eye 28 ... Drawings

Claims (1)

[Claims] 1. A gear is axially attached to an end of a drive shaft directly connected to a motor which uses a dry battery or the like as a power source, and a gear which meshes at a right angle with the gear is attached to a shaft rod mounted on a bearing portion, Left and right end portions of the horizontal ceiling wall portion are symmetrically formed, and side wall plate portions bent in parallel are extended to form a movement adjusting body having symmetrical elliptical insertion holes in the both side wall plate portions. Then, the insertion hole of the movement adjusting body is pierced with respect to the shaft rod, and an eccentric cam axially attached to the shaft rod is fitted into the insertion hole, and a pencil is attached to the holder portion projected on the horizontal ceiling wall portion. An electric drawing and machine tool in which holders, knife holders, clip holders, and the like are alternately attached and detached.