JP2000006585A - Article fixing utensil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To copy the front view of an article correctly conforming to a drafting practice. SOLUTION: A frame 50 is formed into a prismatic shape, and on the bottom face, a floor 57 is provided, and all the other five faces are opened. On guide bars 59, 62 which are provided on the frame 50 in the longitudinal direction, both end parts of a contact member 70 are slidable fitted, and the article 100 which is normally placed on the floor 57 can be fixed with fixing screws 74, 75 under a being pressed state from the top. On the guide bars 59, 62, reels 80-85 where both ends of wires 86, 90, 93 being laid along the back face of the article 100 are fitted slidably in the vertical direction and rotatably around the axes. For example, one end side of the wire 86 is wound by rotating the reel 80 counterclockwise, and the other end side of the wire 86 is wound by rotating the reel 81 clockwise, and the wire 86 is fixed under a tightly stretched state with the fixing screws 88, 89, and the article 100 is pushed forward. The other reels are wound in the same manner, and when the frame 50 is laid in such a manner that the back face of the frame 50 may become the bottom, the front face of the article 100 faces directly upward, and the front view can be easily drawn.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an article fixture, and more particularly to an article fixture suitable for use in copying the shape of an article such as an excavated article from an archeological site according to a drafting method.

[0002]

2. Description of the Related Art In recent years, new archeological sites have been discovered one after another at civil engineering sites and construction sites, and numerous haniwa, earthenware, bronzeware, and the like have been excavated. These excavated items are organized by copying the plan view, front view, side view, back view, and bottom view in a one-to-one size according to the parallel projection method based on the orthogonal projection method. To explain the principle of the perpendicular projection with reference to FIG. 5, put projection plane PL ₁ above article D ₀ of interest. Then, drawing a parallel linear B ₁ .about.B ₈ mutually perpendicular to the projection plane PL ₁ from each point of the contour of the article D _0, plan view D ₀₁ of the contour shape of the article D ₀ by connecting the intersection of the PL ₁ Is drawn. Projection image q corresponding to one side Q of upper surface U of article D ₀
The length of the same, the length of the projected image r corresponding to the side R at the bottom of the article D ₀ are the same.

[0003] a plan view to an article D ₁ in FIG. 6, a front view,
The drawing method of the right side view is shown. Above the article D _1, front, placing the projection plane PL ₁ through PL ₃ by mutually orthogonal on the right side, drawing a straight line parallel to each other in the vertical from each point of the contour of the article D ₁ on the projection plane PL _1, PL ₁ Goods D ₁ by connecting the intersection with
Plan view D ₁₁ contour is drawn in the drawing a straight line parallel to each other in the vertical from each point of the contour of the article D ₁ on the projection plane PL _2,
It front view D ₁₂ of the contour shape of the article D ₁ is drawn connecting the point of intersection between PL _2, projection plane PL from each point of the contour of the article D _1
3 Draw a straight line parallel to one another perpendicular to, right side view D ₁₃ of the contour shape of the article D ₁ by connecting the intersection of the PL ₃ is drawn.

[0004] a left side view with respect to the article D ₁ in FIG. 7, rear view, showing a drawing method of the bottom view. The left side of the goods D _1, backward,
Projection planes PL _{4 to} PL ₆ are set perpendicularly to each other below,
A straight line perpendicular to the projection plane PL ₄ and parallel to each other is drawn from each point of the contour of the article D ₁ , and the intersection with the PL ₄ is connected to the article D 1.
Left side view D ₁₄ of ₁ contour is drawn, drawing a straight line parallel to one another perpendicular to the projection plane PL ₅ from each point of the contour of the article D _1, article D ₁ by connecting the intersection of the PL ₅ rear view D ₁₅ contour is drawn, the projection plane PL ₆ from each point of the contour of the article D ₁ draw straight lines parallel to each other in the vertical, the contour shape of the article D ₁ by connecting the intersection of the PL ₆ bottom view D ₁₆ is drawn.

Conventionally, the copying of an article by the above-described orthogonal projection method involves measuring a distance between various two points of an article using a ruler, measuring an angle between various three points, and using a ruler and a compass. , Using a protractor or the like to draw on a drafting paper with a writing implement. Therefore, it took a lot of time to copy one article. Regarding this problem, it is conceivable to improve the work efficiency by taking a picture of the article, stretching it at an appropriate magnification, and tracing it. However, the picture is equivalent to the central projection method, and as shown in FIG. D
₀ from the point of view VP drawing a straight line connecting the respective points and VP contour when viewed through the projection plane PL _7, a line connecting the intersection of the projection plane PL _7. Therefore, since the scale is in the projected image r'of the projected image q'and bottom side R of one side Q of the upper surface U of the article D ₀ are different, when the entire projected image is stretched at a magnification to be Q = q', R = R ', and the actual length cannot be directly taken as in the parallel projection method (r
'Must be s).

In view of this problem, the present inventor has previously commercialized a copying apparatus capable of accurately and simply copying an article by the orthogonal projection method (see Japanese Patent Application Laid-Open No. 7-278322).
FIG. 9 is an external perspective view of the copying apparatus. 1 is a table, 2 is a TV receiver as an example of a display device placed on the table 1, 3 is a work table, and includes a frame 4 and a transparent top plate 5 horizontally arranged on the frame 4. Become.
Under the left half of the top plate 5 in FIG. 9, the article A to be copied is placed on the table 6, and on the approximately right half of the top plate 5 in FIG. (Not shown). At the upper right end of the frame 4 in FIG. 9, one end of an arm 8 for parallel movement is pivotally supported so as to be freely rotatable. In FIG. 9, the support member 10 extending in the left lateral direction and the support member 11 slightly extending in the right lateral direction in FIG. Bolted.

A TV camera 12 as an example of an image pickup device and a writing instrument 1 are provided near the distal ends of the support members 10 and 11, respectively.
3 is fixed vertically downward. As shown in FIG. 10, the support member 11 is provided with a holder 14 to which the writing instrument 13 can be attached and detached. This holder 14 supports the support member 1
A screw 15 screwed into 1 and an L-shaped pressing member 16 into which the screw 15 is loosely inserted. The screw 15 is loosened, and the writing implement 13 is sandwiched between the pressing member 16 and the supporting member 11,
The writing implement 13 can be easily mounted by tightening the screw 15 while adjusting the height of the tip of the writing implement 13 to substantially contact the paper 7. At this time, since the holding portion 9 of the arm 8 is placed on the top plate 5 and the weight of the distal end of the arm 8 is supported by the top plate 5, the paper 7 is not subjected to pen pressure and is not stained. Note that most of the weight of the arm 8 is supported by the frame 4 on the base end side of the arm 8, so that the parallel movement operation can be performed smoothly even if the holding unit 9 is placed on the top plate 5. If the screw 15 is loosened, the writing implement 13 can be replaced.

The arm 8 for parallel movement has the same mechanism as the drafter arm for drafting. The arm 8 is moved by holding the knob 17 or the tip of the writing implement 13 to move the TV camera. The writing instrument 12 and the writing instrument 13 can be integrally moved in a plane. By this parallel movement, the TV camera 12 and the writing instrument 13 each move in a plane parallel to the top plate 5.

The video output of the TV camera 12 is transmitted through a cable 18.
Is input to the TV receiver 2 through the TV camera 1
The image of the article A captured in 2 is displayed on the screen 19.
Center of the screen 20 of the cathode ray tube of the TV receiver 2 (screen 19
(Corresponding to the optical axis of the TV camera 12) is marked with a cross reference point mark 21. Since the magnification of the TV camera 12 is arbitrary, it may be set appropriately.

Next, the operation of the above-described copying apparatus will be described with reference to FIG. The article A to be copied is placed under the left half of the top 5 in a predetermined direction, and the paper 7 is attached to the right half of the top 5. When it is desired to draw a plan view of the outline shape of the article A by the orthogonal projection method, first, the user moves the tip of the writing implement 13 in a plane parallel to the top plate 5 and moves the reference point mark 2 on the screen 19.
1 is adjusted to the outline of the image of the article A, and then while the writing implement 13 is slightly depressed and the pen pressure is applied to the paper 7, the reference point mark 21 relatively moves along the outline of the article A in the image. The writing implement 13 is continuously moved together with the TV camera 12 to draw a line drawing (see FIGS. 11A and 11B).
At this time, the vertical optical axis C of the TV camera 12 is
In FIG. 5, the intersections between the optical axis C and the top plate 5 are equivalent to the perpendiculars B _{1 to} B ₄ vertically lowered from the contour of the article D ₀ to the projection plane PL _1. Become. Since the writing implement 13 moves in the same manner as the TV camera 12, the line drawing becomes a right angle projection image of the outline of the article A, and the outline shape of the article A is reproduced in a one-to-one size.

As described above, according to the copying apparatus shown in FIG. 9, the operator operates the TV camera 12 and the writing implement 13 so that the reference point mark 21 on the video screen relatively moves along the contour shape of the article A. By simply performing a simple operation of performing a parallel translation on a plane by integrating the two, the copying of an article by the orthogonal projection method becomes possible, and the work efficiency is dramatically improved. In addition, even if the worker does not hold down the tip of the writing implement 13 and presses down, when the paper 7 is under writing pressure, the user holds the knob 17 at the tip of the arm 8 and the TV camera 12 and the writing implement. 13 may be moved in parallel.

[0012]

By the way, in order to organize the data of the excavated product, not only a plan view of the excavated product viewed from directly above, but also a front view viewed from the front, a side view viewed from the side, and a rear view. It is necessary to draw various figures, such as a rear view viewed from above (see FIGS. 6 and 7). For example, when drawing a plan view of an excavated product using the apparatus shown in FIG. 9, if the excavated product is placed directly under the top plate 5, the TV camera 12 will look down from directly above, and the plan view can be easily viewed. Can be drawn. On the other hand, when drawing a front view, it is necessary to fix the position of the excavated product in a direction in which the front of the excavated product is looked down from directly above. When the shape of the excavated product is a cube or a rectangular parallelepiped, it can be easily achieved by rotating the front 90 ° from a state in which the front faces in the horizontal direction and changing the front so as to face vertically upward.

However, in general, excavated items have large and small projections, are generally conical, or have the shape of a person or an animal, and have a complicated contour shape except for the bottom surface. It is difficult to maintain a posture in which the front of the excavated object is just vertically upward by fitting. For this reason, there was a problem that only a figure slightly shifted from the front of the excavated product could be drawn. Even when it was necessary to draw a side view or back view using the apparatus of FIG. 9, it was difficult to draw a correct side view or back view.

[0014] Even if the drafting is performed manually without using the apparatus of Fig. 9, if the operator intends to work with the excavated product looking down, the plan view places the excavated product on the horizontal base,
When the operator looks down from directly above, the outline shape, pattern, and the like to be drawn in the plan view can be known, and thus the drawing can be performed relatively easily. On the other hand, as for the front view, it is necessary to fix the posture of the excavated object on the horizontal base in a direction that looks down directly on the front of the excavated object, but since it has a complicated contour shape, It is difficult to maintain a position where the front of the excavated object is just vertically upward. For this reason, the operator looks down at the direction obliquely shifted from the front of the excavated product, and can draw only a figure slightly shifted from the front of the excavated product. The present invention has been made in view of the above-described problems of the related art, and has as its object to provide an article fixing tool capable of correctly copying the shape of an article according to a drafting method.

[0015]

According to a first aspect of the present invention, there is provided an article fixing device, wherein a bottom surface and a back surface have a right angle relationship, at least a front surface is open, and a frame having a floor for placing articles on the bottom surface. , Hold the goods placed on the floor from above,
A pressing portion sandwiched between the floor and a pulling portion that crawls one or more pulling members along the back surface of the article placed on the floor, pulls both ends of each pulling member, and presses the article in the front direction. It is characterized by having.

With the frame upright, the article is placed on the floor with the front of the article aligned with the front of the frame, and the top of the article is pressed from above by the holding section to move and move the article in the height direction. Constrain movement in direction. In addition, the pulling portion causes one or more pulling members to crawl along the back surface of the article, and pulls both ends of each pulling member to push the article in the front direction. When the frame is laid down with the back side down, the pulling member supports the weight of the article, so that the article does not move relative to the frame, and the front of the article faces directly upward. Therefore,
When looking down on the article from directly above, the contours and patterns to be drawn in the front view can be seen, so that a correct front view can be drawn.

In the article fixing device according to the second aspect of the present invention,
An elastic layer is provided on the upper surface of the floor. When the article placed on the floor is pressed from above by the pressing portion, a large friction is generated between the bottom surface of the article and the elastic layer, and it is possible to reliably prevent the fixing position of the article from being shifted from the frame.

In the article fixing device according to the third aspect of the present invention,
The pressing portion is a contact member that contacts the upper end of the article, and supports the contact member movably in the vertical direction with respect to the article, and fixes or releases the fixation while pressing the contact member against the upper end of the article. And a contact member support mechanism that can perform the operation. When fixing the article in the frame, the fixing of the contact member is released, and the article is placed on the floor on the bottom face of the frame in a state where the article is in a standby state above,
The contact member is moved downward and pressed against the upper end of the article to be fixed. Thereby, the article can be easily pressed and fixed in the direction of the bottom surface of the frame.

In the article fixing device according to the fourth aspect of the present invention,
An elastic layer is provided on a contact surface of the contact member with the article. When the article placed on the floor is pressed from above by the press section, a large friction is generated between the upper end of the article and the elastic layer, so that the fixed position of the article with respect to the frame can be reliably prevented from shifting.

In the article fixing device according to claim 5 of the present invention,
The pressing portion is disposed in parallel with the floor and is a contact member that contacts the upper end of the article, and is fitted to both ends of the contact member,
A guide for guiding the contact member vertically movably with respect to the article, and a set screw provided at both ends of the contact member for fixing the contact member to the guide and releasing the fixation. And that it is composed of: When fixing the article in the frame, loosen the set screw to release the fixation of the abutment member to the guide, move the article upward, wait for it, place the article on the floor on the bottom of the frame, and lower the abutment member downward. And press it against the upper end of the article, then tighten the set screw to fix it. Thus, the article can be pressed and fixed in the direction of the bottom surface of the frame by a simple operation.

In the article fixing device according to claim 6 of the present invention,
The pulling portion has a pulling member supporting mechanism that pulls and supports both ends of each pulling member, and the pulling member supporting mechanism movably supports at least one end of both ends of each pulling member with respect to the article. That is, it is characterized. After the article is pressed by the pressing section, each pulling member of the pulling section is made to crawl along the back surface of the article, and is pulled and supported while adjusting the supporting position of the pulling member to an appropriate position by the pulling member support mechanism. Thereby, when the frame is laid down, the weight of the article can be supported without bias, and the displacement of the article can be reliably prevented.

In the article fixing device according to claim 7 of the present invention,
The pulling member is formed in a linear shape or a band shape, and the pulling member support mechanism is capable of winding up and unwinding at least one of both ends of each pulling member, and fixing in a desired winding state, It is characterized in that fixing can be released. After pressing the article with the holding section, the linear or band-shaped pulling member of the pulling section is crawled along the back of the article, and the pulling member supporting mechanism adjusts the supporting position of the pulling member to an appropriate position, and pulls the pulling member. Both ends or one end of the member are wound up and pulled, and fixed and supported in a desired winding state. Thereby, even if the article has a projection, or has a rounded or concave shape, even if the article has a complicated shape, the pulling member is tightly fitted to the shape of the back side of the article without loosening and the frame is laid down. Sometimes the goods do not move by weight.

In the article fixing device according to claim 8 of the present invention,
The pulling member is formed in a linear shape or a band shape, and the pulling portion slides by two guides disposed on both sides of the article in an up-down direction, and each of the guides slides by the number of pulling members. For freely fixing, one end of the pulling member is fixed, and a reel for winding and unwinding the pulling member, and a reel provided on each reel for fixing and releasing the reel to the guide. And a set screw. After holding down the article with the holding section, release the fixing of the pulling section with the set screw of each reel, move it up and down along the guide to the appropriate position, and move each pulling member to the top and bottom of the back of the article, such as
Crawl to an appropriate place to support the weight in a balanced manner, wind up the reel, pull each pulling member, and fix the reel to the guide with a set screw. With this, even if the article has a complicated shape, such as having a protrusion or having a roundness or a dent, it is possible to pull the pull member in close contact with the shape of the back of the article without loosening by a simple operation. Can be.

[0024]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below. FIG. 1 is a perspective view of an article fixing device according to the present invention. In FIG. 1, reference numeral 50 denotes a frame formed in a prism shape, and includes an upper surface 51, a front surface 52, left and right side surfaces 53 and 54.
And a back surface 55 is open, and an article 100
A flat floor 57 for mounting the vehicle is fixed. Floor 57
A sponge sheet 58 as an elastic layer is stuck on the top. The bottom surface 56 and the back surface 55 of the frame 50,
The two surfaces that intersect each other are at right angles. Reference numeral 59 denotes a round bar-shaped guide bar (guide rod) provided between the center of the frame member 60 corresponding to the upper side of the left side surface 53 of the frame 50 and the center of the frame member 61 corresponding to the lower side. A round bar-shaped guide bar (guide rod) provided between the center of the frame member 63 corresponding to the upper side of the right side surface 54 and the center of the frame member 64 corresponding to the lower side.

The guide bars 59 and 62 are in contact with the upper end of the article 100 and have a rectangular rod-shaped contact member 7 for pressing down from above.
The left end 71 and the right end 72 of the “0” are slidably fitted in the vertical direction. A sponge sheet 73 as an elastic layer is attached to the lower surface of the contact member 70. Contact member 70
Set screws 74 and 7 at the left end 71 and the right end 72 of the
When the set screw 74 is screwed, the tip hits the guide bar 59, and when the set screw 75 is screwed, the tip hits the guide bar 62, and the abutting member 70 is brought into contact with the guide bars 59, 62. (See FIG. 2). vice versa,
When the set screw 74 is unscrewed, the tip is separated from the guide bar 59, and when the set screw 75 is unscrewed, the tip is separated from the guide bar 62, and the contact member 70 is separated from the guide bars 59, 62.
Can be moved up and down.

The guide bars 59 and 62, the contact member 70, and the setscrews 74 and 75 constitute a holding portion for holding the article 100 from above and restraining the article 100 from moving in the height and lateral directions. ing. Guide bars 59, 6
2. The contact member 70 is moved to the article 1 by the set screws 74 and 75.
00 and movably supported in the vertical direction with respect to 00, while abutting the contact member 70 against the upper end of the article,
A contact member support mechanism for releasing the fixing is configured.

The guide bar 59 has reels 80, 8
1 and 82 are fitted slidably in the vertical direction and rotatably around the axis.
4, 85 are fitted so as to be slidable in the vertical direction and rotatable around the axis. One end of a linear stainless steel wire 86 as a pulling member is formed in the reel 80 by a hole (not shown) in which one end of the wire 86 is formed in the reel 80.
The wire 86 is fixed by being passed through the wire 86 twice, so that the wire 86 can be wound up by rotating in the counterclockwise direction, and the wire 86 can be unwound by rotating in the clockwise direction. The other end of the wire 86 is fixed to the reel 83 by passing the other end of the wire 86 through a hole 87 formed in the reel 83 twice. The wire 86 can be unwound by rotation in the counterclockwise direction (see FIG. 3).

Each of the reels 80 and 83 has a set screw 8
When the setscrews 88 and 89 are screwed forward, the tips hit the guide bars 59 and 62, and the reels 80 and 83 are fixed to the guide bars 59 and 62. Conversely, when the set screws 88, 89 are screwed back, the tips are separated from the guide bars 59, 62, and the reels 80, 83 can be rotated and moved up and down with respect to the guide bars 59, 62.

One end of a linear stainless steel wire 90 as a pull member is attached to the reel 81.
Into the hole (not shown) formed in the reel 81.
The wire 90 is fixed by being passed therethrough, and the wire 90 can be wound up by rotating in a counterclockwise direction, and the wire 90 can be unwound by rotating in a clockwise direction. The other end of the wire 90 is fixed to the reel 84 by passing the other end of the wire 90 twice through a hole (not shown) formed in the reel 84. The wire 90 can be wound up or the wire 90 can be unwound by rotating in the counterclockwise direction.

Each of the reels 81 and 84 has a set screw 9
When the set screws 91 and 92 are screwed forward, the tips hit the guide bars 59 and 62, and the reels 81 and 84 are fixed to the guide bars 59 and 62. Conversely, when the set screws 90, 91 are screwed back, the leading ends are separated from the guide bars 59, 62, and the reels 81, 84 can rotate and move up and down with respect to the guide bars 59, 62.

One end of a linear stainless steel wire 93 as a pull member is attached to the reel 82.
One end into a hole (not shown) formed in the reel 82.
The wire 93 is fixed by being passed therethrough, and the wire 93 can be wound up by rotating in the counterclockwise direction, and the wire 93 can be unwound by rotating in the clockwise direction. The other end of the wire 93 is fixed to the reel 85 by passing the other end of the wire 93 through a hole (not shown) formed in the reel 85 twice. The wire 93 can be wound up or the wire 93 can be unwound by rotating counterclockwise.

Each of the reels 82 and 85 has a set screw 9
4 and 95 are screwed together, and when the set screws 94 and 95 are screwed forward, the tips hit the guide bars 59 and 62, and the reels 82 and 85 are fixed to the guide bars 59 and 62. Conversely, when the set screws 94 and 95 are screwed back, the leading ends are separated from the guide bars 59 and 62, and the reels 82 and 85 can be rotated and moved up and down with respect to the guide bars 59 and 62.

Guide bars 59, 62, reels 80-8
5, wires 86, 90, 93, set screws 88, 89, 9
1, 92, 94 and 95 constitute a pulling portion for pushing the article 100 in the front direction. Guide bar 5
A pulling member support mechanism for pulling and supporting both ends of the wire 86 by the reels 9 and 62, the reels 80 and 83, and the setscrews 88 and 89 constitutes guide bars 59 and 62, reels 81 and 84, and set screws 91 and 92. By wire 90
And a guide member 59, 62, and reels 82, 8
5. A pulling member support mechanism for pulling and supporting both ends of the wire 93 by the set screws 94 and 95 is configured.

Next, the operation of the above embodiment will be described. The set screws 74, 75 of the contact member 70 are loosened (screwed back) to release the fixation of the contact member 70, and the guide bar 59,
The contact member 70 is raised near the upper end of the
0 is placed on the sponge sheet 58 with the bottom of the article 100 centered on the floor 57, and the front of the article 100 is aligned with the front 52 of the frame 50. Then, the contact members 70 are lowered, and the set screws 74, 75 are tightened (screwed) while being pressed against the upper end of the article 100 so that the article 100 does not move. 59,
The contact member 70 is pressed to fix the contact member 70.

As a result, the article 100 is sandwiched between the contact member 70 and the floor 57, and the movement in the height direction and the lateral direction is restricted. At this time, the sponge sheet 73 on the lower surface of the contact member 70 and the sponge sheet 58 on the upper surface of the floor 57
The article 100 is prevented from being damaged, and a large frictional force is generated, so that the article 100 is hardly displaced.

Next, set screws 88 of the reels 80 to 85,
Loosen (screw back) 89, 91, 92, 94, and 95 to release the fixing of the reels 80 to 85, and the reels 80 and 83 are viewed on the guide bars 59 and 62 in the height direction of the article 100, The wire 86 is moved from the top to a position corresponding to 1/5 to 1/3 to crawl the wire 86 along the back of the article 100, the reel 80 is rotated counterclockwise, and the reel 83 is rotated clockwise. When both ends of the wire 86 are wound up and pulled, and the wire 86 is sufficiently stretched, a set screw 88,
Tighten 89 (screw advance) to fix the reels 80, 83 to the guide bars 59, 62.

The reels 81 and 84 are connected to the guide bar 5.
9 and 62, the wire 90 is moved to a position corresponding to the center when viewed in the height direction of the article 100, the wire 90 is crawled along the back surface of the article 100, and the reel 81 is rotated in a counterclockwise direction. Is rotated clockwise to wind up and pull both ends of the wire 90, and when the wire 90 is sufficiently stretched, tighten (screw) the set screws 91 and 92, and attach the reels 81 and 84 to the guide bars 59 and 62. Fix it.

Further, the reels 82 and 85 are provided on the guide bar 5.
When viewed in the height direction of the article 100 above 9, 62, 1 /
The wire 93 is moved to a position corresponding to 5 to 1/3, and the wire 93 is crawled along the back surface of the article 100, the reel 82 is rotated counterclockwise, and the reel 85 is rotated clockwise to rotate both ends of the wire 93. And pull the wire 93
Is sufficiently tightened, the set screws 94 and 95 are tightened (screwed), and the reels 82 and 85 are fixed to the guide bars 59 and 62.

The ends of the wires 86, 90, and 93 crawl along the back of the article 100 are pulled obliquely forward by the reels 80 to 85, so that the article 100 is pushed forward in three places at the top and bottom of the back. It is. Note that even if the article 100 has a complicated shape, the wires 86, 90, 93
00, the wire 86, 9
A sufficient contact length between the wires 0, 93 and the article 100 is ensured, and the wires 86, 90, 93 do not shift.

In this state, the frame 50 is laid down so that the back surface 55 is directly below. At this time, since the article 100 is sandwiched between the contact member 70 and the floor 57 of the frame 50, the movement of the article 100 in the height direction is completely prevented, and the article 100 is parallel to the bottom surface 56 of the frame 50. The movement in the direction is also restricted to some extent. Further, since the weight of the article 100 is well-balanced and reliably supported by the wires 86, 90, and 93, the article 100 does not come off the frame 50. Therefore, the article 100 is placed on the front 52 of the frame 50.
When looking down from right above through, the contour shape to be drawn as a front view can be seen (see FIG. 4).

When it is desired to draw a front view of the article 100, the front view of the article 100 can be drawn by projecting the article 100 in parallel in a direction perpendicular to the front face 52 of the frame 50. Therefore, when copying manually, the contour shape when looking down the article 100 directly below through the front surface 52 of the frame 50 is measured by measuring the distance between two points of each part or measuring the angle between the three points by using a ruler, By simply drawing on a drafting sheet using a compass, a protractor, or the like, a correct front view determined by the drafting method can be created as shown in FIGS.

When the copying apparatus shown in FIG. 9 is used, the frame 50 is placed under the top plate 5 with the front face 52 facing upward, and the TV camera 12 looks down the article 100 through the front face 52 of the frame 50 directly below. To Then, the user moves the writing instrument 13 in a plane parallel to the top plate 5 while holding the tip of the writing instrument 13 so that the reference point mark 21 of the screen 19 is aligned with the contour of the image of the article 100. While applying pressure, the writing implement 13 is set to T so that the reference point mark 21 relatively moves along the contour of the article 100 in the video.
If it moves continuously with the V camera 12 and draws a line drawing, a correct front view as defined by the drafting method can be easily created.

When a left side view (right side view or rear view) of the article 100 is to be drawn, the article 100 is first placed on the floor 5.
7, the left side (the right side or the back) of the article 100 may be aligned with the front 52 of the frame 50.

According to the above-described embodiment, the frame 5
0, the article 100 is placed on the floor 57 with the front face of the article 100 aligned with the front face 52 of the frame 50, and the contact member 70 presses the upper end of the article 100 from above, and Constrain horizontal and horizontal movements. Also, three wires 8 along the back of the article 100
6, 90, 93 are crawled, and both ends of the wires 86, 90, 93 are pulled to push the article 100 in the front direction. In this state, when the back surface 55 of the frame 50 is laid down, the articles 86 do not move with respect to the frame 50 because the wires 86, 90, and 93 support the weight of the article 100.
00 faces directly upward. Therefore, the article 100 from directly above
When looking down, the outline shape and pattern to be drawn in the front view can be seen, so that a correct front view can be drawn.

Since the sponge sheets 58 and 73 are attached to the upper surface of the floor 57 and the lower surface of the contact member 70, the article 100 is damaged when the contact member 70 presses the article 100 toward the floor 57. Sticking is prevented, the frictional force is increased, and the article 100 is less likely to slip.

Further, a pair of guide bars 59, 62 for supporting the contact member 70 is provided on the both sides of the article in parallel with the height direction of the article 100. By fitting the ends slidably in the up-down direction and tightening or loosening the set screws 74, 75, the contact member 70 is fixed or fixed to any position on the guide bars 59, 62. Can be released, so that the article 100 can be pressed against the bottom surface of the frame 50 and fixed by a simple operation.

Further, the tension member is formed by a linear wire 86,
Even if the article 100 has a complicated shape, such as having a protrusion or having a roundness or a dent, by pulling both ends of the wires 86, 90, and 93, the back of the article 100 can be formed. Wires 86, 90, 93 according to shape
Is not loosened and does not shift, so that the article 100 does not move by weight when the frame 50 is laid down.

A reel 80 is provided on the guide bar 59 so as to be slidable and rotatable in the up and down direction. One end of a wire 86 is fixed to the reel 80 while being wound and unwound. The wire 86 is provided so as to be slidable and rotatable in the up and down direction, and the other end of the wire 86 is fixed to the reel 83 while being wound up and unwound. In addition, the wire 86 can be easily fixed at a desired setting location in a state where both ends of the wire 86 are pulled.

Similarly, the reels 81 (82) are provided on the guide bar 59 so as to be slidable and rotatable in the vertical direction.
The reel 84 (85) is provided on the guide bar 62 so as to be slidable and rotatable in the vertical direction, and the wire 90 (93) is attached to the reel 84 (85). The other end is fixed and wound up,
Since the wire 90 can be unwound freely, the wire 90
The setting location of (93) can be easily and freely adjusted, and the wire 9 can be easily adjusted at the desired setting location.
0 (93) can be fixed in a state where both ends are pulled.

Further, a guide for moving the contact member 70 up and down,
Guides for vertical movement and rotation of reels 80 to 85 are the same
Since the operation is performed by the pair of guide bars 59 and 62, the load on the configuration is small.

In the above embodiment, the wire 8
Both ends of 6 are supported on the guide bars 59, 62 by reels 80, 83 which can be moved up and down and rotatable. However, one or both reels cannot be moved up and down, and can be rotated only. Or
One reel may not be able to move up and down and rotate, and the other reel may be able to move up and down and rotate. For the wire 90 (93),
Both ends are supported on the guide bars 59, 62 by reels 81, 84 (82, 85) that can be moved up and down and rotatable. However, one or both reels cannot be moved up and down, and are rotated. Just be able to do it,
Alternatively, one of the reels may not be able to move up and down and rotate, and the other reel may be able to move up and down and rotate.

In the above embodiment, the wire 8
Although the case where three pulling members 6, 90 and 93 are used has been described as an example, one, two or four or more pulling members may be used. Also, among the wires 86, 90, 93, the article 1
For a certain length portion that may hit the back of 00, an elastic tube such as a vinyl tube (FIG. 1)
96, 97, and 98) to prevent the article 100 from being damaged. In addition, although the case where stainless steel wires 86, 90, 93 are used as the pulling member has been described as an example, a piano wire, a fishing line, a rubber string, or the like may be used, and further, a cloth band sheet, a rubber band sheet. Or the like may be used.

[0053]

According to the present invention, the article is placed on the floor while the front of the article is aligned with the front of the frame, and the upper end of the article is pressed from above by the pressing portion to move the article in the height direction. Constraining lateral movement, and the pulling portion causes one or more pulling members to crawl along the back of the article;
Since the pulling members push the article in the front direction by pulling both ends of the pulling member, if the frame is laid down so that the back of the frame faces down, the pulling member supports the weight of the article, and the article does not move relative to the frame. The front faces directly above. Therefore, when looking down on the article from directly above, the outline shape and pattern to be drawn in the front view can be seen, so that a correct front view can be drawn.

[Brief description of the drawings]

FIG. 1 is a perspective view of an article fixing device according to the present invention.

FIG. 2 is a partially cutaway front view showing one end of a contact member in FIG. 1;

FIG. 3 is a partially broken front view showing the reel in FIG. 1;

FIG. 4 is a plan view showing a use state of the article fixing device of FIG. 1;

FIG. 5 is an explanatory diagram of the orthogonal projection method.

FIG. 6 is an explanatory diagram of a drafting method.

FIG. 7 is an explanatory diagram of a drafting method.

FIG. 8 is an explanatory diagram of a center projection method.

FIG. 9 is an external perspective view showing a conventional copying apparatus.

FIG. 10 is a configuration diagram of a holder of the writing instrument in FIG. 9;

11 is an explanatory diagram of a copying method using the copying device of FIG. 9;

[Explanation of symbols]

2 TV receiver 3 Work table 5 Top plate 6 8 Arm 12 TV camera 13 Writing implement 50 Frame 55 Back 56 Bottom 57 Floor 58, 73 Sponge sheet 59, 62 Guide bar 70 Contact member 74, 75, 88, 89, 91 , 92, 94, 95 Set screw 80, 81, 82, 83, 84, 85 Reel 86, 90, 93 Wire 100 Article

Claims (8)

[Claims] A bottom and a back have a right-angled relationship, at least a front is open, and a frame having a floor for placing an article on the bottom, and an article placed on the floor being pressed from above, and A holding portion for sandwiching, and a pulling portion for causing one or more pulling members to crawl along the back surface of the article placed on the floor, pulling both ends of each pulling member, and pressing the article in the front direction. Article fixing device. 2. The article fixing device according to claim 1, wherein an elastic layer is provided on an upper surface of the floor. 3. The pressing portion includes: a contact member that contacts an upper end of an article; a contact member that supports the contact member so as to be vertically movable with respect to the article, and is fixed in a state where the contact member is pressed against the upper end of the article. 2. The article fixing device according to claim 1, further comprising: a contact member supporting mechanism capable of releasing or releasing the fixing. 4. The article fixing device according to claim 3, wherein an elastic layer is provided on a contact surface of the contact member with the article. 5. The pressing portion is disposed in parallel with the floor and is in contact with an upper end of the article, and is fitted to both ends of the abutting member. And a set screw provided at both ends of the contact member to fix or release the contact member with respect to the guide. The article fixing device according to claim 1, wherein 6. The pulling portion has a pulling member support mechanism for pulling and supporting both ends of each pulling member, wherein the pulling member supporting mechanism is configured to at least one end of both ends of each pulling member with respect to the article. The article fixture according to claim 1, wherein the article fixture is movably supported. 7. The pulling member is formed in a linear shape or a belt shape, and the pulling member support mechanism is capable of winding and unwinding at least one of both ends of each pulling member, and a desired winding state. The article fixture according to claim 6, wherein the article can be fixed or released. 8. The pulling member is formed in a linear shape or a band shape, the pulling portion includes two guides disposed vertically on both sides of the article, and a pulling member provided on each of the guides. Are slidably fitted by the number of, and the end of the pulling member is fixed,
2. A reel for winding and unwinding a pulling member, and a set screw provided on each reel to fix or release the reel with respect to a guide. The article fixing device according to the above.