JP3902116B2 - Line drawing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a diagram drawing apparatus capable of drawing a diagram while a diagram drawing pen moves along a template while drawing the diagram.
[0002]
[Prior art]
Conventionally, a diagram drawing toy has been proposed as a diagram drawing pen. This line drawing toy is designed to draw an inner trochoid curve. When the rotating plate support means attached eccentrically to the rotating plate provided with a writing instrument rotates, the gear pivotally attached to the rotating plate As a result, the rotating plate rotates while revolving together with the rotating rotating plate support member, so that the inner trochoidal curve of the writing instrument is rotated. It is possible to draw a flower pattern diagram. (For example, see Patent Document 1)
[0003]
[Patent Document 1]
Japanese Utility Model Publication No. 7-5793 (pages 6-8, FIG. 2)
[0004]
[Problems to be solved by the invention]
However, if the above-mentioned line drawing toy is fixed at a certain place and a single line drawing is drawn, it is possible to write a line drawing such as a beautiful flower pattern, but the line drawing toy is moved to draw the line drawing. When drawing, since the movement of the toy and the movement of the writing pen provided on the toy are not synchronized, there is a problem that the cleanliness of the diagram is not reflected.
[0005]
An object of the present invention is to solve the above problems and to provide a diagram drawing device that can draw a diagram by moving the diagram drawing pen without disturbing the diagram drawn by the diagram drawing pen. .
[0006]
[Means for Solving the Problems]
In order to solve the above problems, a diagram drawing apparatus according to the present invention is a diagram drawing apparatus composed of a combination of a diagram drawing pen and a template, and has the following requirements.
(A) The line drawing pen includes a support plate provided on a rotating shaft that revolves while rotating inside a cylindrical grip portion, and a writing pen supported at a position eccentric to the rotating shaft of the support plate; (B) An actuating ring having a gear formed on the outer peripheral surface is rotatably provided at the tip of the drawing pen (c) The actuating ring rotates in conjunction with the rotating shaft. (2) A rack gear is provided on the peripheral surface of the template. (E) The drawing pen is arranged along the peripheral surface of the template with the gear of the operating ring meshing with the rack gear of the template. Moving [0007]
The rack gear may be formed as a free curve ruler instead of a template, and a diagram may be drawn with a user's favorite figure.
[0008]
Further, a member having a high friction coefficient may be provided around the outer peripheral surface of the operating ring in parallel with the gear.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows a use state of an example of a diagram drawing device according to the present invention, and this diagram drawing device comprises a combination of a diagram drawing pen A and a template B.
[0010]
As shown in FIG. 2, the diagram-drawing pen A includes a support plate 3 provided on a rotating shaft 2 that revolves while rotating inside a cylindrical grip 1, and the rotating shaft 2 of the support plate 3. In addition to the writing pen 4 supported at an eccentric position, the operating ring 5 having a gear 78 (hereinafter referred to as an outer peripheral gear) 78 formed on the outer peripheral surface is rotatably provided at the tip of the grip portion 1. The drawing pen A of the template B is rotated by rotating the operating ring 5 in a state where the rack gear 6 formed on the peripheral surface of the template B is engaged with the outer peripheral gear 78 formed on the outer peripheral surface of the operating ring 5. It can be moved along the shape.
[0011]
As shown in FIGS. 3A and 3B, the template B is formed in a substantially triangular shape from a portion having a large diameter and a portion having a small diameter, and a holding pin 7 is rotatably attached to the small diameter portion. The large-diameter portion has a circular opening 8a, the central portion has quadrilateral, heart-shaped, star-shaped and other openings 8b, 8c, 8d, and the rack gear 6 is provided around the peripheral surface. Yes. A convex edge 9 is provided around the inside of the rack gear 6 on the back side of the template B. When the rack B is used as a front side, the rack gear 6 meshes with the outer peripheral gear 78 of the operating ring 5, and when the back side is used, the rack B is operated. The outer peripheral gear 78 of the ring 5 is not engaged with the rack gear 6.
[0012]
As shown in FIG. 4, the grip portion 1 is formed by connecting the upper case 1a and the lower case 1b with screws 8 to form a cylindrical shape as a whole. The operation button 11 of the power switch 10 protrudes from the upper case 1a. A hole 12 for projecting the switch button 13 and a hole 14 for projecting the switching button 13 are formed. A battery box 15 for storing a battery is provided in the lower case 1 b, and a detachable lid 16 is fixed with a screw 17.
[0013]
A motor 20 is disposed in front of the battery box 15 inside the grip portion 1, and a pinion 21 fixed to the rotating shaft of the motor 20 meshes with the reduction gear 22. The reduction gear 22 meshes with the second reduction gear 23, and the reduction gear 23 meshes with the third reduction gear 24 with a clutch. The three reduction gears 22, 23, and 24 are each supported by a bearing provided inside a cylindrical gear box 25 and are housed inside the gear box 25.
[0014]
Note that. The motor 20 is covered with a cover 27 fixed to the gear box 25 with screws 28.
[0015]
The reduction gear 24 is in mesh with the gear 26. The gear 26 is pivotally attached to a rotation shaft 34 of a circular member 33 in which an arcuate frame 32 projecting rearward of the circular member 31 positioned at the tip of the grip portion 1 is coupled by a screw 42 with an edged screw 54. .
[0016]
A protrusion 35 is formed at the rear end of the circular member 33 so as to be engaged with a protrusion 69 (see FIG. 6) provided inside a switching member 66 described later.
[0017]
A clutch gear 38 is engaged with the gear 26 via gears 36 and 37. The clutch gear 38 is fixed to the rear end of the rotating shaft 39, and the gear 40 fixed to the tip of the rotating shaft 39 meshes with the inner peripheral gear 79 of the operating ring 5 to rotate the operating ring 5. (See FIG. 5).
[0018]
The writing pen 4 (the outer writing pen 4 a and the inner writing pen 4 b) is supported by a support portion 46 provided on the front surface of the circular support plate 3. The support portion 46 is a bearing portion 47 into which a shaft portion of the writing pen 4 is fitted and is urged by a spring 48 to be accommodated in a support tube 49 and fixed by a fixing member 50. 46, and is always pressed against the writing surface by a spring 48 so that the pen tip does not float from the writing surface.
[0019]
A gear 55 is pivotally attached to the rotary shaft 2 extending rearward from the back surface of the support plate 3 through a hole 53 formed in the circular member 31, and is rotatably fitted in a bearing 57 provided in the circular member 33. Rarely, it is secured with a rimmed screw 59.
[0020]
The circular member 33 is positioned inside a cylindrical switching member 66 having an inner peripheral gear 65, and a cylindrical body 68 having an inner peripheral gear 67 having a different number of teeth is connected to the switching member 66. The gear 55 attached to the rotating shaft 2 of the support plate 3 selectively meshes with either the inner peripheral gear 65 or 67.
[0021]
A groove 71 is formed on the outer periphery of the switching member 66, and two protrusions 72 are formed on the rear end surface so as to protrude rearward and engage with a protrusion 83 formed to protrude on the front surface of a locking member 81 described later. A protrusion 69 for engaging with the protrusion 35 of the circular member 33 is formed in the switching member 66 so as to protrude forward.
[0022]
The switching member 66 and the cylindrical body 68 are integrated into a cylindrical member 62 having an opening 61 on the side wall, and the opening 61 is formed on a slide plate 73 connected to the switching button 13. The engaging convex portion 74 is inserted, and the engaging convex portion 74 is fitted in a groove 71 provided on the outer periphery of the switching member 66.
[0023]
The locking member 81 is cylindrical and is sandwiched between the gear box 25 and the cylindrical member 62. Inside the locking member 81, two protrusions 83 are formed to protrude forward so as to engage with the protrusion 72 of the switching member 66 and prevent the switching member 66 from rotating.
[0024]
A transparent cylindrical cover 75 is fitted at the tip of the grip portion 1 and fixed with screws 76.
[0025]
A guide edge 77 protrudes forward from the tip of the cover 75, and the guide ring 77 is fitted with an operating ring 5 having an inner peripheral surface and an outer peripheral surface formed with an outer peripheral gear 78 and an inner peripheral gear 79, respectively. The operating ring 5 is fixed by a fixing ring 80 so as to be able to go around.
[0026]
The gear 40 meshes with the inner peripheral gear 79, and the gear 40 fixed to the rotation shaft 39 of the clutch gear 38 meshed with the gear 26 and 37 through the gears 36 and 37 meshes with the gear 26 that rotates in conjunction with the rotation of the motor 20. Therefore, when the motor 20 rotates, the gear 24 rotates via the gears 22 and 23, and when the clutch gear 38 engaged with the gear 24 rotates via the gears 37 and 36, the rotation via the rotary shaft 39 occurs. Since the gear 40 is rotated, the operating ring 5 in which the inner peripheral gear 79 is engaged with the gear 40 is rotated.
[0027]
According to the diagram-drawing pen A having the above-described configuration, as shown in FIG. 6A, when the power switch 11 is turned on with the switching button 13 set to the most distal position A, the pinion 21 is moved by the motor 20. This rotation is transmitted to the gear 26 via the gears 22, 23 and 24.
[0028]
Since the gear 26 is attached to the rotary shaft 34, the circular members 31 and 33 rotate integrally with the gear 26. Therefore, the support plate 3 attached eccentrically to the circular member 31 revolves in a circle.
[0029]
At this time, the switching member 66 revolves integrally with the circular member 33 because the protrusion 69 protruding inward is engaged with the protrusion 35 protruding rearward of the circular member 33. As a result, the gear 55 of the rotating shaft 2 that moves on the revolving circular member 33 meshes with the inner peripheral gear 65 of the revolving switching member 66, and therefore the rotating shaft 2 itself does not rotate, so the locus of the writing pen 4 Is a circle of three types depending on the attachment position of the writing pen 4 (use either the outer writing pen 4a or the inner writing pen 4b) and the number (use both the writing pen 4a and the inner writing pen 4b) (See FIG. 7A).
[0030]
6B, when the switching button 13 is set at the center position B, the engaging convex portion 74 of the switching button 13 is engaged with the groove 71 provided on the outer periphery of the switching member 66. Therefore, the switching member 66 also moves to the center position. In this state, the gear 55 is engaged with the inner peripheral gear 65 of the switching member 66.
[0031]
When the power switch 11 is turned on, the pinion 21 is rotated by the motor 20, and this rotation is transmitted to the gear 26 via the gears 22, 23 and 24.
[0032]
Since the gear 26 is attached to the rotary shaft 34, the circular members 31 and 33 rotate integrally with the gear 26. Therefore, the support plate 3 attached eccentrically to the circular member 31 revolves in a circle.
[0033]
At this time, the protrusion 69 protruding inside the switching member 66 is separated from the protrusion 35 protruding rearward of the circular member 33, and the protrusion 72 protruding rearward of the switching member 66 is engaged with the protrusion 83 inside the locking member 81. Since the switching member 66 cannot rotate, the gear 55 attached to the rotating shaft 2 of the support plate 3 meshes with the inner peripheral gear 65 of the switching member 66, but since the switching member 66 is not rotating, it is circular. When the members 31 and 33 rotate, the gear 55 meshing with the stopped inner peripheral gear 65 rotates to move together with the circular members 31 and 33. As a result, the support plate 3 rotates while revolving together with the rotating circular members 31 and 33.
[0034]
For example, when the number of teeth of the gear 55 is 22 and the number of teeth of the first inner peripheral gear 65 is 44, the greatest common divisor of the number of teeth of the gear 55 and the inner peripheral gear 65 is 22, Since the value obtained by dividing the number of 65 teeth by 22 is 2, the locus of the writing pen 4 becomes three types of ellipses depending on the attachment position and the number of the writing pens 4 (see FIG. 7B).
[0035]
6C, when the switching button 13 is set to the rearmost position C, the engaging convex portion 74 of the switching button 13 is engaged with a groove 71 provided on the outer periphery of the switching member 66. Therefore, the switching member 66 also moves to the rearmost position. At this time, the gear 55 of the rotating shaft 2 of the support plate 3 meshes with the second inner peripheral gear 67 of the switching member 66.
[0036]
When the power switch 11 is turned on, the pinion 21 is rotated by the motor 20, and this rotation is transmitted to the gear 26 via the gears 22, 23 and 24.
[0037]
Since the gear 26 is attached to the rotary shaft 34, the circular members 31 and 33 rotate integrally with the gear 26. Therefore, the support plate 3 attached eccentrically to the circular member 31 revolves in a circle.
[0038]
The protrusion 69 protruding inside the switching member 66 is separated from the protrusion 35 protruding rearward of the circular member 33, and the protrusion 72 protruding rearward of the switching member 66 engages with the protrusion 83 inside the locking member 81, Since the switching member 66 is stopped, the gear 55 attached to the rotating shaft 2 of the support plate 3 meshes with the inner peripheral gear 67 of the switching member 66, but the switching member 66 is not rotating, so the circular member When 31 and 33 rotate, the gear 55 meshed with the stopped inner peripheral gear 67 moves while rotating together with the circular members 31 and 33, so that the support plate 3 revolves together with the rotating rotating members 23 and 33. While rotating.
[0039]
For example, when the number of teeth of the gear 55 is 22 and the number of teeth of the second inner peripheral gear 67 is 46, the greatest common divisor of the number of teeth of the gear 55 and the inner peripheral gear 67 is 2, and the inner peripheral gear Since the value obtained by dividing the number of teeth of 67 by 2 is 23, the locus of the writing pen 4 becomes a floral pattern having three kinds of 23 petals depending on the attachment position and the number of writing pens 4 (FIG. 7 (c) )reference).
[0040]
Incidentally, the operating ring 5 is rotatably attached to the tip of the line drawing pen A, and the inner peripheral gear 79 formed on the inner peripheral surface of the operating ring 5 rotates in conjunction with the rotation of the gear 26 described above. Since the gear 40 meshes and the operation ring 5 rotates with the movement of the writing pen 4, as shown in FIG. 1, the template B is fixed to the sheet surface with one hand, and the line drawing pen A is supported with the other hand. When the outer peripheral gear 78 formed on the operating ring 5 is meshed with the rack gear 6 formed on the peripheral surface of the template B, the drawing pen A moves along the peripheral edge of the template B as the operating ring 5 rotates. Can be moved.
[0041]
When the switching button 13 is set to the position A of the most tip, the writing pen 4 moves in a circle while the entire pen moves along the template B, so the diagram becomes as shown in FIG. When the button 13 is set at the center position B, the entire tip of the pen moves while drawing the ellipse, so that the diagram is as shown in FIG. 9, and the switch button 13 is positioned at the rearmost position. When set to C, the entire pen moves while the pen tip moves to draw a floral pattern, so the diagram is as shown in FIG.
[0042]
Although the rack gear 6 is formed on the peripheral surface of the triangular template B, the rack gear 6 may be formed on the side surface of the universal curve ruler B ′ as shown in FIG. As a result, the free curve ruler B ′ can be freely bent, and the line drawing pen A can be moved along the free curve ruler B ′ to draw a line with a free curve path. It should be noted that an engaging convex portion 85 and an engaging concave portion 86 may be formed at both ends of the free curve ruler B ′ so that a plurality of free curve rulers B ′ can be connected.
[0043]
As shown in FIG. 12, a member 84 (for example, rubber) having a high friction coefficient may be provided around the outer peripheral surface of the operating ring 5 in parallel with the outer peripheral gear 78. This allows the pen to move along the shape of the member B ′ having a certain thickness instead of the template having a gear around the peripheral surface. It is possible to cut a board or a board into a desired shape and use it instead of a template, or to use daily necessaries such as a book or a cup instead of a template.
[0044]
【The invention's effect】
According to the first aspect of the present invention, the line drawing pen is provided with the operating ring that rotates in conjunction with the rotating shaft for moving the writing pen, and the gear formed on the outer peripheral surface of the operating ring is formed on the outer peripheral surface of the template. By meshing with the rack gear, the diagram drawing pen can be drawn with the writing pen while moving along the shape of the template, so that the geometric pattern can be drawn beautifully.
[0045]
According to the invention of claim 2, by forming the rack gear on a free curve, it is possible to draw a pattern that cannot be drawn with a template of a predetermined shape, and to draw a pattern in a user's favorite shape it can.
[0046]
According to the invention of claim 3, by providing a member having a high friction coefficient such as rubber on the peripheral surface of the operating ring, the line drawing pen can be moved along a member without a rack gear, Daily necessities such as cups can be used instead of templates.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a usage state of a line drawing device according to the present invention. FIG. 2 is a side view of a line drawing pen. FIGS. 3A and 3B are a plan view and a bottom view of a template. 4 is an exploded perspective view of the drawing pen. FIG. 5 is a vertical cross-sectional view of the main part of the drawing pen. FIGS. 6A to 6C are vertical cross-sectional views of the main part for explaining the operation mechanism of the writing pen. [Fig. 7] (a) to (c) are diagrams drawn with a writing pen. [Fig. 8] Diagram drawn using a template. [Fig. 9] Diagram drawn using a template. [Fig. FIG. 11 is a plan view for explaining the configuration of a universal curve ruler. FIG. 12 is a side view for explaining another example of an operating ring.
DESCRIPTION OF SYMBOLS 1 Grip part 2 Rotating shaft 3 Support plate 4 Writing pen 5 Actuation ring 6 Rack gear 78 Gear A Line drawing pen B Template

Claims (3)

A diagram drawing apparatus comprising a combination of a diagram drawing pen and a template, and having the following requirements:
(A) The line drawing pen includes a support plate provided on a rotating shaft that revolves while rotating inside a cylindrical grip portion, and a writing pen supported at a position eccentric to the rotating shaft of the support plate; (B) An actuating ring having a gear formed on the outer peripheral surface is rotatably provided at the tip of the drawing pen (c) The actuating ring rotates in conjunction with the rotating shaft. (2) A rack gear is provided on the peripheral surface of the template. (E) The drawing pen is arranged along the peripheral surface of the template with the gear of the operating ring meshing with the rack gear of the template. To move The diagram drawing apparatus according to claim 1, wherein the rack gear is formed as a free curve ruler instead of a template. The diagram drawing device according to claim 1, wherein a member having a high friction coefficient is provided around the outer peripheral surface of the operating ring in parallel with the gear.

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