JP7001298B2 - Line drawing device and line drawing support tool - Google Patents

Description

The present invention relates to a line drawing device and a line drawing support tool used when drawing a line on a playground or the like.

For example, when performing an athletic meet, a ball game such as baseball or soccer, an athletics, or the like, the work of drawing a desired line according to the purpose on the ground of an athletic field or the like is performed in advance. The work is generally referred to as "drawing a line" or "drawing a line". The line is formed, for example, from a powder obtained by powdering calcium carbonate.

As a device used by users such as school personnel and competition personnel to draw a line, a main body having a discharge port for discharging powder contained in the storage space to the outside and rotating to the main body. A line drawing device including freely provided wheels is known (for example, Patent Document 1). When drawing a line, the user holds the handle attached to the main body and pushes the line drawing device in any direction, or moves the line drawing device in any direction with a push-pull operation to open the discharge port. The powder is released to the ground through.

Japanese Unexamined Patent Publication No. 2011-254846

However, a certain skill is required to draw a desired line by using the above-mentioned conventional line drawing device. Especially when drawing a circular line, it is extremely difficult for the user to move the line drawing device in the circumferential direction while maintaining the desired distance from the center of the circle, and the circular line is drawn regardless of the skill of the user. A technique that can be easily pulled has been desired.

Therefore, an object of the present invention is to provide a line drawing device and a line drawing support tool that can easily draw a circular line.

The line drawing device of the present invention has a main body portion having an accommodating portion for accommodating powder for forming a line, and a discharge port for discharging the powder contained in the accommodating portion to the outside, and the main body portion . A position different from the predetermined position on the free end side of the length measuring tool that moves integrally with the main body and is rotatably held at the predetermined position on the free end side. The length measuring tool is provided with a length measuring tool fixing portion for fixing the length measuring tool, and the length measuring tool is a strip-shaped one having a scale provided in one direction, and the length measuring tool fixing portion is the length measuring tool. The length measuring tool has an opening for visually recognizing a scale indicating a position different from the predetermined position on the free end side of the tool, and the length measuring tool coincides with the extension line of the rotation axis of the wheel in a plan view in the longitudinal direction thereof. It is fixed to the length measuring tool fixing portion so as to be used .

The line drawing device of the present invention has a main body portion having an accommodating portion for accommodating powder for forming a line, and a discharge port for discharging the powder contained in the accommodating portion to the outside, and the main body portion . A position different from the predetermined position on the free end side of the length measuring tool that moves integrally with the main body and is rotatably held at the predetermined position on the free end side. The length measuring tool fixing portion comprises a first plate and a second plate superimposed on the upper surface of the first plate. The first plate and the second plate sandwich a position different from a predetermined position on the free end side of the length measuring tool, and the length measuring tool is said to have a plan view in the longitudinal direction thereof. It is fixed to the length measuring tool fixing portion so as to coincide with the extension line of the rotation axis of the wheel .

The line drawing support tool of the present invention includes a main body portion having an accommodating portion for accommodating powder for forming a line and a discharge port for discharging the powder contained in the accommodating portion to the outside, and a wheel. It is a line drawing support tool in a line drawing device that forms a line on a target surface by discharging powder while moving by the rotation of the main body , and moves integrally with the main body portion to a predetermined position on the free end side. A length measuring tool fixing portion for fixing a position different from a predetermined position on the free end side of the length measuring tool held rotatably is provided, and the length measuring tool fixing portion is a length measuring tool of the length measuring tool. The length measuring tool has an opening for visually recognizing a scale indicating a position different from a predetermined position on the free end side, and the length measuring tool coincides with an extension line of the rotation axis of the wheel in a plan view in the longitudinal direction thereof. As described above, it is fixed to the length measuring tool fixing portion .

According to the present invention, a circular line can be easily drawn.

Schematic diagram of the configuration of the line drawing device according to the first embodiment of the present invention. (A) (b) Perspective view of the length measuring tool positioning unit constituting the line drawing device according to the first embodiment of the present invention. An exploded view of a line drawing support unit (line drawing support tool) provided in the line drawing device according to the first embodiment of the present invention. Front view of the line drawing device according to the first embodiment of the present invention. Partial side view of the line drawing device according to the first embodiment of the present invention. Rear view of the line drawing device according to the first embodiment of the present invention. AA'cross-sectional view shown in FIG. 4 of a line drawing support unit (line drawing support tool) provided in the line drawing device according to the first embodiment of the present invention. Perspective view of the line drawing device according to the first embodiment of the present invention. The figure which shows the use example of the line drawing apparatus in Embodiment 1 of this invention. Top view of the length measuring tool positioning unit constituting the line drawing device according to the first embodiment of the present invention. The figure which shows the use example of the line drawing apparatus in Embodiment 1 of this invention. (A) (b) Perspective view of the length measuring tool positioning unit constituting the line drawing device according to the second embodiment of the present invention. Schematic diagram of the configuration of the line drawing device according to the third embodiment of the present invention. Partial side view of the line drawing device according to the third embodiment of the present invention.

(Embodiment 1)
The configuration of the line drawing device according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 10. FIG. 7 is a cross-sectional view taken along the line AA'shown in FIG. In the first embodiment, one horizontal direction is referred to as an X-axis direction, a direction orthogonal to the X-axis direction in the horizontal plane is referred to as a Y-axis direction, and a direction orthogonal to the XY plane is referred to as a Z-axis direction. The line drawing device 1 has a function of discharging powder to a ground GL (FIG. 4) such as a playground to draw a line, and includes a main body portion 2.

In FIG. 5, the main body 2 has an internal space S having an open upper portion, and the internal space S accommodates, for example, a powder 3 obtained by powdering calcium carbonate. The internal space S is an accommodating portion for accommodating the powder 3 for forming a line. In FIG. 1, a cover member 4 that can be opened and closed with respect to the upper surface (opening) of the main body 2 is provided on the upper portion of the main body 2 via a hinge portion (not shown). By covering the upper surface of the main body 2 with the cover member 4, the powder 3 housed in the internal space S is in a sealed state.

In FIG. 1, the main body portion 2 is provided with a U-shaped handle portion 5. The handle portion 5 includes standing portions 5a and 5b that stand upward from positions on both sides on the upper side of the main body portion 2 and connecting portions 5c whose ends are connected to the individual standing portions 5a and 5b. To. The handle portion 5 is gripped by the user when a user (not shown) draws a line using the line drawing device 1.

A pair of wheels 6a and 6b are provided at positions on both sides of the main body 2 on the bottom side. In FIGS. 1 and 4, the pair of wheels 6a and 6b penetrate the main body 2 via the internal space S and are connected and fixed to both ends of the shaft 7 rotatably held by the main body 2. .. Tires 8a and 8b are attached to each of the pair of wheels 6a and 6b. By rotating the tires 8a and 8b in a predetermined direction with the tires 8a and 8b in contact with the ground GL, the main body 2 smoothly moves in a predetermined direction. As described above, the wheels 6a (6b) are rotatably provided on the main body 2.

A stand 9 extending downward is provided at the bottom of the main body 2. The stand 9 is for maintaining the line pulling device 1 in an upright posture.

In FIG. 6, a discharge port 10 communicating with the internal space S is formed at a position on the bottom side of the main body 2 and a position opposite to the mounting side of the stand 9. The powder 3 contained in the internal space S is discharged toward the ground GL through the discharge port 10. That is, the discharge port 10 discharges the powder 3 contained in the storage portion to the outside. The discharge port 10 may be an aggregate of a plurality of small holes.

A slide member 11 that is vertically slidable (arrow a) is provided at a position on the bottom side of the main body 2 between a position that covers the discharge port 10 and a position that does not cover the discharge port 10. The slide member 11 is slidably held by guide members 12 provided on both sides. An operation unit 14 is provided above the slide member 11 via a long connecting member 13. A part of the connecting member 13 is covered with a guide member 15, and the connecting member 13 is guided in the vertical direction while being restricted from moving in the horizontal direction (left-right direction on the paper surface). The operation unit 14 is gripped when the user performs an operation of sliding the slide member 11 in a predetermined direction. When drawing a line using the line drawing device 1, the user slides the slide member 11 upward with respect to the main body 2 to open the discharge port 10 (FIG. 6).

In FIG. 4, a plurality of stirring blades 16 are fixed to the shaft 7 side by side in the axial direction. The stirring blade 16 is arranged in the internal space S and rotates integrally with the shaft 7. The stirring blade 16 rotates by itself with the rotation of the shaft 7, thereby stirring the powder 3 in the internal space S. As a result, the powder 3 can be prevented from being clogged in the internal space S and clogged, and an appropriate amount of the powder 3 can be smoothly discharged from the discharge port 10.

Next, a line pulling support unit (line pulling support tool) 17 that can be attached via the wheel 6a will be described. In FIGS. 1 and 3, the line drawing support unit 17 has a function of assisting the user in drawing a circular line, and one of the pair of wheels 6a and 6b (Embodiment 1). The cylinder member (hollow cylinder) 18 fixed to the wheel 6a) is provided. The cylindrical member 18 is hollow and is fixed to the wheel 6a via a plurality of fitting members 19 (three in the first embodiment).

In FIG. 3, the fitting member 19 has a plate-shaped piece 19a having a length corresponding to the width of the wheel 6a (the width of the tire 8a), and the first one bent from both ends of the plate-shaped piece 19a toward the center of the wheel 6a. 19b, a second bending piece 19c, and a third bending piece 19d bent in a direction away from the wheel 6a from one end of the second bending piece 19c. The angle formed by the plate-shaped piece 19a and the first bent piece 19b (second bent piece 19c) is approximately 90 degrees. The third bent piece 19d is formed with an opening 19d1 (FIG. 5) for inserting a bolt 20 via a washer. The cylindrical member 18 has an opening 18a (first) for inserting a bolt 20 at a position corresponding to a position where a plurality of fitting members 19 are attached (a position on the outer periphery on the one end side close to the wheel 6a). The opening) is formed.

When fixing the cylindrical member 18 to the wheel 6a, the plate-shaped piece 19a is brought into contact with the tire 8a while the first bending piece 19b and the second bending piece 19c are placed along both sides of the wheel 6a. As a result, the plurality of fitting members 19 are fitted to the wheels 6a. Next, with the nut 21 interposed between the third bent piece 19d and the cylindrical member 18, the bolt 20 is inserted into the openings 19d1 and 18a of the third bent piece 19d and the cylindrical member 18 to form a cylinder. Tighten the member 18 toward the center. As a result, the fitting member 19 is pressed toward the center side of the wheel 6a, and the cylindrical member 18 is fixed to one side surface of the wheel 6a via the fitting member 19. The cylindrical member 18 is a fixed portion (fixed portion) fixed to the wheel 6a, and rotates integrally with the wheel 6a. Further, the fitting member 19, the bolt 20 and the nut 21 are fixing means for fixing the fixing portion to the wheel 6a.

In FIGS. 3 and 7, the cylindrical member 18 is rotatably held by the cylindrical member holding portion (fixing portion holding portion) 22. The cylindrical member holding portion 22 includes a shaft portion 23, a hollow rotating body 24 rotatably held around the shaft portion 23, a bearing 25 interposed between the shaft portion 23 and the rotating body 24, and a shaft portion. It is configured to include a nut 26 screwed into the tip of 23. The length dimension of the rotating body 24 in the width direction (direction orthogonal to the circumferential direction) is, for example, ½ or less of the length dimension in the width direction of the cylindrical member 18.

When the rotating body 24 is inserted into the cylindrical member 18, the inner peripheral surface of the cylindrical member 18 and the outer peripheral surface of the rotating body 24 are in close contact with each other. By making the length dimension of the rotating body 24 in the width direction smaller than the length dimension of the cylindrical member 18 in the width direction, the bolt 20 for fastening the fitting member 19 and the cylindrical member 18 is attached to the rotating body 24. It is designed not to interfere.

An opening 18b (second opening) for inserting a bolt is formed at a position of the cylindrical member 18 corresponding to a region where the inner peripheral surface of the cylindrical member 18 and the outer peripheral surface of the rotating body 24 are in close contact with each other. With the rotating body 24 inserted inside the cylindrical member 18, one end of the bolt 27 is pressed against the outer peripheral surface of the rotating body 24 by tightening with a bolt 27 through the opening 18b (FIG. 7). As a result, the rotating body 24 is fixed to the cylindrical member 18. When the main body portion 2 advances in a predetermined direction due to the rotation of the pair of wheels 6a and 6b, the cylindrical member 18 rotates relative to the shaft portion 23.

In FIG. 3, a columnar connecting portion 28 having a diameter smaller than that of the shaft portion 23 is provided on one end side of the shaft portion 23. A rectangular first plate 29 on which a circular opening 29a is formed is fixed to the connection portion 28 by welding or the like. When the rectangular second plate 30 having the same circular opening 30a formed on the upper surface of the first plate 29 is superposed, the respective openings 29a and 30a are in communication with each other. The first plate 29 and the second plate 30 are formed with a plurality of holes 29b and 30b for bolting (two in the first embodiment). The second plate 30 is fixed to the first plate 29 by fastening the second plate 30 to the first plate 29 with a wing bolt 31 via the holes 29b and 30b, respectively. Will be done.

In FIG. 8, the first plate 29 and the second plate 30 have a function of fixing a predetermined position (first position P1) of the length measuring tool 32 by sandwiching. In FIG. 2, the length measuring tool 32 is a strip-shaped tool having a scale 32a provided in one direction, and a so-called tape measure is given as an example. The length measuring tool 32 in the first embodiment is wound and housed by the reel 33 shown in FIG. A notch 33a is formed on one end side of the reel 33. The user grips the reel 33 by passing a finger through the notch 33a. The first plate 29, the second plate 30, and the wing bolt 31 are connected to the shaft portion 23 constituting the cylindrical body holding portion (fixing portion holding portion) via the connecting portion 28, and are connected to the second plate of the length measuring tool 32. It is a length measuring tool fixing portion (length measuring tool first fixing portion) that sandwiches and fixes the position P1 of 1.

As described above, the second plate 30 is provided with an opening 30a. Therefore, when the length measuring tool 32 is sandwiched between the first plate 29 and the second plate 30, a part of the first position P1 which is a fixed position of the length measuring tool 32 via the opening 30a (FIG. The fixed center C1) shown in 9 is exposed. Thereby, the user can confirm the scale 32a at the first position P1 of the length measuring tool 32 when drawing a circle of a desired size using the line drawing device 1. As described above, the first fixing portion of the length measuring tool has an opening (opening 30b) for visually recognizing the scale 32a indicating the first position P1 of the length measuring tool 32. It is not necessary to form the opening 29a in the first plate 29.

One end of a rod-shaped leg 34 as a support member is fixed to the lower surface of the first plate 29. The leg portion 34 supports the first fixing portion of the length measuring tool from below.

In FIG. 3, an elongated guard member 35 extending upward is fixed to the connecting portion 28. A hole 35a is formed at a position below the guard member 35. After inserting the guard member 35 into the connecting portion 28 via the hole portion 35a, the nut 36 is screwed into the connecting portion 28 and the guard member 35 is sandwiched between the nut 36 and the shaft portion 23 to form the guard member 35. It is fixed.

The guard member 35 includes a bent portion 35b that bends toward the main body in the process of extending upward, and an upright portion 35c that stands adjacent to the upright portion 5a constituting the handle portion 5. An "L" -shaped hook portion 37 is provided at the other end of the guard member 35 (the tip of the upright portion 35c). As shown in FIG. 8, by passing the notched portion 33a of the reel 33 through the hooking portion 37, the reel 33 is in a state of being hooked and held by the hooking portion 37, whereby the user performs the line drawing work. At that time, the troublesomeness of holding the reel 33 can be eliminated.

When the length measuring tool 32 is pulled out from the state where the reel 33 is hooked on the hooking portion 37, and the first position P1 of the length measuring tool 32 is sandwiched between the first plate 29 and the second plate 30 and fixed. , The range of the length measuring tool 32 (reference numeral Q shown in FIG. 9) existing between the reel 33 and the first plate 29 (second plate 30) comes into contact with the guard member 35 and moves toward the wheel 6a. Movement is restricted. As a result, it is possible to prevent the length measuring tool 32 from being caught in the wheel 6a while the line drawing device 1 is traveling. The guard member 35 is a regulatory means for restricting the movement of the length measuring tool 32 toward the wheel 6a. It is desirable that the length dimension of the guard member 35 in the width direction is set larger than the length dimension of the length measuring tool 32 in the width direction.

In FIG. 2, the free end side (one end side, tip side) of the length measuring tool 32 is positioned by the length measuring tool positioning unit 38. The length measuring tool positioning portion 38 includes a plurality of (three in the present embodiment) leg portions 39 bent in an “L” shape. One ends of the plurality of leg portions 39 are connected to each other, and the plurality of leg portions 39 are arranged radially so that the distance between the adjacent leg portions 39 and the leg portions 39 is equal.

In the leg portion 39, the portion on the side bent at approximately 90 degrees toward the ground GL has a tapered shape with a sharp tip, and the insertion portion 39a inserted by piercing the ground GL (broken line shown in FIG. 4). It has become. In this way, by inserting the insertion portions 39a extending in the vertical direction into at least three locations on the ground GL, the legs 39 do not easily come off the ground GL even if an external force acts in the horizontal direction. It has become. As a result, it is possible to suppress the displacement of the position of the length measuring tool 32 in the horizontal plane on the free end side.

The joint portion 39b (FIG. 4), which is a position where one end portions of the plurality of leg portions 39 are connected to each other, is provided with a shaft portion 40 having an upright posture. A nut 41 is screwed onto the upper part of the shaft portion 40. The shaft portion 40 rotatably holds the third plate 42 and the fourth plate 43. The shaft portion 40 is formed with a through hole 40a (FIG. 10) penetrating in the vertical direction, whereby the user can visually recognize the ground GL located directly below the shaft portion 40 through the through hole 40a.

In FIG. 2A, an opening 42a having a diameter larger than the diameter of the shaft portion 40 and smaller than the diameter of the nut 41 is formed in the central portion of the third plate 42. Therefore, the third plate 42 does not fall off from the leg portion 39. An opening 43a having a diameter larger than the diameter of the shaft portion 40 and the nut 41 is formed in the central portion of the fourth plate 43, and is detachable from the leg portion 39 and the shaft portion 40. A plurality of (two in this embodiment) holes 42b and 43b for bolting are formed in each of the third plate 42 and the fourth plate 43.

A method of fixing the length measuring tool 32 in the length measuring tool positioning unit 38 will be described. As shown in FIG. 2A, the user removes the fourth plate 43 and then places a predetermined portion on the third plate 42 on the free end side of the length measuring tool 32 (second position P2). Is placed. From this state, the user inserts the second position P2 that abuts on the fourth plate 43 of the length measuring tool 32 by superimposing the fourth plate 43 from above the third plate 42. Next, the user fastens with the wing bolt 44 via the holes 42b and 43b. As a result, the fourth plate 43 is fixed to the third plate 42, and the second position P2 in the length measuring tool 32 is sandwiched and fixed by the third plate 42 and the fourth plate 43. ..

In the above configuration, the length measuring tool positioning portion 38 (leg portion 39, shaft portion 40, third plate 42, fourth plate 43, wing bolt 44) positions and fixes the free end side of the length measuring tool 32. do. Further, the length measuring tool positioning portion 38 is a length measuring tool second fixing portion (third plate 42) for fixing the second position P2 on the free end side of the first position P1 of the length measuring tool 32. , 4th plate 43, wing bolt 44) and the length measuring tool 2nd fixing part holding part which is fixed to the ground GL which is the target surface to draw a line and holds the length measuring tool 2nd fixing part rotatably. (Leg 39, shaft 40) and the like.

For example, in a playground, a position for drawing a circle is predetermined, and in many cases, a marker as a marker is provided at the center of the circle. In such a case, the leg portion 39 must be pierced and fixed at a position avoiding the marker, but in the first embodiment, the leg portion is located at the position of the ground GL avoiding the lower part of the shaft portion 40 which is the center of rotation. 39 can be pierced and fixed. That is, according to the length measuring tool positioning unit 38 in the first embodiment, the shaft portion 40 (center of rotation) can be aligned at the upper position along the vertical direction of the marker, so that the marker is purposely moved from the ground GL. No need to remove.

Further, since the through hole 40a is formed in the shaft portion 40, the user can visually recognize the ground GL and the marker located directly below the shaft portion 40 through the through hole 40a. That is, the user can visually confirm whether or not the shaft portion 40 is aligned directly above the marker by looking into the through hole 40a from above.

In FIG. 9, the height position Ha that sandwiches the first position P1 of the length measuring tool 32 between the first plate 29 and the second plate 30, and the second position P2 of the length measuring tool 32 are the third. The height position Hb sandwiched between the plate 42 and the fourth plate 43 is substantially the same. This keeps the levelness of the length measuring tool 32 (see range L) located between the first plate 29 and the second plate 30 and the third plate 42 and the fourth plate 43. , A circle of a desired size can be drawn more accurately with the powder 3.

The line drawing device 1 in the first embodiment is configured as described above. Next, a method of drawing a circular line using the line drawing device 1 will be described with reference to FIGS. 8, 9 and 11. First, the user positions the free end side of the length measuring tool 32 at a predetermined position by the length measuring tool positioning unit 38. More specifically, the user sandwiches and fixes the second position P2 on the free end side of the length measuring tool 32 between the third plate 42 and the fourth plate 43. Next, the user positions the shaft portion 40 above the marker provided on the ground GL while looking into the through hole 40a of the shaft portion 40, and in this state, the plurality of leg portions 39 (insertion portions 39a) are lined. It pierces the ground GL, which is the target surface to draw. As a result, the second position P2 of the length measuring tool 32 fixed by sandwiching between the third plate 42 and the fourth plate 43 is positioned. The second position P2 is located approximately in the center of the drawn circle.

Next, the user sandwiches and fixes the first position P1 of the length measuring tool 32 between the first plate 29 and the second plate 30 according to the size of the circle to be drawn. In FIG. 9, the powder discharged from the discharge port 10 from the fixing center C1 of the first position P1 of the length measuring tool 32 sandwiched and fixed between the first plate 29 and the second plate 30. The distance T to the emission center C2 of 3 is constant. Therefore, if the user recognizes this distance T as an offset amount in advance, the user can specify a predetermined position (scale 32a) of the length measuring tool 32 in consideration of the distance T as the first position P1. .. For example, when the distance T is t1 and the radius of the circle to be drawn is r1, the user has a range W from the fixed center C1 of the first position P1 to the fixed center C3 of the second position P2, r1-. Two points of the length measuring tool 32 are fixed so as to be t1.

The user then moves from the first position P1 fixed by the first plate 29 and the second plate 30 to the second position P2 fixed by the third plate 42 and the fourth plate 43. The main body 2 is moved so that the range L of the length measuring tool 32 up to is in the horizontal posture (FIG. 9).

Next, the user advances the main body 2 (or moves forward while repeating pushing and pulling) with the shaft 40 as the axis in the state where the discharge port 10 of the main body 2 is in the "open" state. As a result, as shown in FIG. 11, the third plate 42 and the fourth plate 43 are attached to the leg portion 39 following the movement of the main body portion 2 while holding the second position P2 of the length measuring tool 32 fixedly. It rotates with respect to it (arrow b). At the same time, the main body portion 2 moves on the circumference centered on the shaft portion 40 while discharging the powder 3 to the ground GL through the discharge port 10 (arrows c → d → e → f). At this time, since the free end side of the length measuring tool 32 is positioned and fixed, the user can use the circular (perfect circular) line V (trajectory drawn by the powder 3 discharged to the ground GL) having a constant radius. ) Can be easily subtracted. In FIG. 11, for convenience, the guard member 35, the hooking portion 37, and the reel 33 are not shown. In this way, the line drawing device 1 discharges the powder 3 while moving by the rotation of the wheels 6a and 6b, thereby forming the line V on the ground GL which is the target surface.

(Embodiment 2)
Next, a second embodiment of the present invention will be described with reference to FIG. In the second embodiment, the structure of the length measuring tool positioning unit is different from that of the first embodiment. That is, the length measuring tool positioning unit 38A includes a plurality of leg portions 39A having the same configuration as that of the first embodiment, and the joint portion 39Ab at a position where one end portions of the plurality of leg portions 39A are bonded to each other. Is provided with a rod-shaped member 45 having an upright posture in the vertical direction. At the tip of the length measuring tool 32A on the free end side, a loop-shaped locking portion 32Aa having an opening larger than the diameter of the rod-shaped member 45 is formed.

The user pierces the insertion portion 39Aa of the leg portion 39A into the ground at a desired position to fix the leg portion 39A, and further locks the locking portion 32Aa to the rod-shaped member 45 through the opening. As a result, the length measuring tool 32A is rotatably held from the rod-shaped member 45 as a starting point.

That is, the length measuring tool positioning unit 38A (leg portion 39A, rod-shaped member 45) positions a predetermined position of the length measuring tool 32A and measures the length at a position fixed to the target surface on which the line V is drawn. It is a length measuring tool holding unit that rotatably holds a predetermined position on the free end side of the tool 32A. Further, the first plate 29 and the second plate 30 are connected to the fixing portion holding portion, and the predetermined position on the free end side is rotatably held at the predetermined position on the free end side of the length measuring tool 32A. Is a length measuring tool fixing part that fixes different positions.

It is also possible to achieve the intended purpose by omitting the leg portion 39A and piercing the rod-shaped member 45 into the ground GL. However, in the configuration of fixing to the ground GL at only one point, it is vulnerable to an external force acting in the horizontal direction, so it is desirable to fix at least two points.

(Embodiment 3)
Next, a third embodiment of the present invention will be described with reference to FIGS. 13 and 14. The same members as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted. In the third embodiment, the configuration of the line drawing support unit 17 in the first embodiment is different. That is, the first plate 51 is fixed to the main body portion 2 of the line drawing device 100 via the connecting portion 50. A circular opening 51a is formed in the first plate 51. One end of a rod-shaped leg 54 as a support member is fixed to the lower surface of the first plate 51.

When the rectangular second plate 52 having the circular opening 52a formed on the upper surface of the first plate 51 is superposed, the respective openings 51a and 52a are in communication with each other. The first plate 51 and the second plate 52 are formed with a plurality of holes (not shown) for bolting. A predetermined portion of the length measuring tool 32 is sandwiched between the first plate 51 and the second plate 52, and from this state, the length measuring tool is fastened with a wing bolt 53 through the respective holes of each plate. The 32 is fixed by sandwiching, and the second plate 52 is fixed to the first plate 51.

In FIG. 14, one end of the connecting portion 50 penetrates the main body portion 2 and reaches the internal space S. A nut member 55 is screwed into one end of the connecting portion 50, whereby the connecting portion 50 is fixed to the main body portion 2. As a method of fixing the first plate 51 to the main body 2, a means other than the means described in the third embodiment may be adopted. Further, although not shown, the line drawing device 100 is accompanied by a length measuring tool positioning unit 38 (FIG. 2) according to the first embodiment.

As described above, the line drawing device 100 includes an accommodating portion (internal space S) for accommodating the powder 3 for forming a line, and a discharge port 10 (internal space S) for discharging the powder 3 contained in the accommodating portion to the outside. FIG. 6), and a position different from the predetermined position on the free end side of the length measuring tool 32 fixed to the main body 2 and rotatably held at the predetermined position on the free end side. It is provided with a length measuring tool fixing portion (first plate 51, second plate 52, wing bolt 53) for fixing. Since the line drawing device 100 is configured to directly fix the first plate 51 to the main body portion 2 via the connecting portion 50, the structure can be simplified as compared with the first embodiment. ..

As described above, according to the line drawing device 1 in the first to third embodiments, a circular line can be easily drawn without being influenced by the skill of the user. Further, a main body portion 2 having an accommodating portion for accommodating the powder 3 and a discharge port 10 for discharging the powder 3 contained in the accommodating portion to the outside, and a wheel rotatably held with respect to the main body portion 2. And, by discharging the powder while moving by the rotation of the wheel 6a, it can be attached to the conventional line drawing device that forms the line V on the target surface, so that the introduction cost can be reduced. ..

In the first embodiment, the line drawing support unit 17 is included in the component of the line drawing device 1, but the line drawing support unit 17 is used as a separate “line drawing support tool”, and the others are “line drawing support tools”. It may be a "device". That is, the line drawing support tool supports the line drawing work performed by using the line drawing device 1 that forms the line V on the target surface by releasing the powder 3 while moving by the rotation of the wheel 6a. Yes, it is used together with the line drawing device 1. Further, the line drawing support tool may include the length measuring tool positioning units 38 and 38A.

The present invention is not limited to the configuration described in the first to third embodiments, and the design may be changed without departing from the spirit of the invention. For example, the cylindrical member 18 may have any shape in appearance as long as it rotates integrally with the wheel 6a and the rotating body can be attached. Further, a method of fixing the cylindrical member 18 to the wheel 6a is also arbitrary, and the second bent piece 19c and the wheel 6a may be fastened with a plurality of bolts. Further, the line drawing device may be provided with four wheels, and in such a case, a cylindrical member may be attached to any one of the four wheels. Further, the target surface on which the line V is drawn is not limited to the ground GL, but may be a lawn, artificial turf, or an indoor floor surface.

According to the line drawing device and the line drawing support tool of the present invention, a circular line can be easily drawn, which is useful in the field of exercise equipment.

1,100 Line pulling device 2 Main body 3 Powder 10 Discharge port 6a Wheel 51 First plate (length measuring tool fixing part)
51a Opening 52 Second plate (length measuring tool fixing part)
53 Butterfly bolt (length measuring tool fixing part)
32, 32A Length measurement tool 32a Scale S Internal space (accommodation)
V line

Claims (3)

A main body portion having an accommodating portion for accommodating powder for forming a line and a discharge port for discharging the powder contained in the accommodating portion to the outside.
Wheels rotatably provided on the main body and
With the length measuring tool fixing part that moves integrally with the main body and fixes a position different from the predetermined position on the free end side of the length measuring tool in which the predetermined position on the free end side is rotatably held. , Equipped with
The length measuring tool is a strip-shaped tool provided with a scale in one direction.
The length measuring tool fixing portion has an opening for visually recognizing a scale indicating a position different from a predetermined position on the free end side of the length measuring tool.
The length measuring tool is a line drawing device fixed to the length measuring tool fixing portion so that its longitudinal direction coincides with an extension line of the rotation axis of the wheel in a plan view . A main body portion having an accommodating portion for accommodating powder for forming a line and a discharge port for discharging the powder contained in the accommodating portion to the outside.
Wheels rotatably provided on the main body and
With the length measuring tool fixing part that moves integrally with the main body and fixes a position different from the predetermined position on the free end side of the length measuring tool in which the predetermined position on the free end side is rotatably held. , Equipped with
The length measuring tool fixing portion includes a first plate and a second plate superimposed on the upper surface of the first plate.
The first plate and the second plate sandwich a position different from the predetermined position on the free end side of the length measuring tool.
The length measuring tool is a line drawing device fixed to the length measuring tool fixing portion so that its longitudinal direction coincides with an extension line of the rotation axis of the wheel in a plan view . It is provided with a main body portion having an accommodating portion for accommodating powder for forming a line and a discharge port for discharging the powder accommodating in the accommodating portion to the outside, and the powder is moved while being moved by the rotation of wheels. It is a line drawing support tool in a line drawing device that forms a line on the target surface by discharging.
A length measuring tool fixing part that moves integrally with the main body and fixes a position different from the predetermined position on the free end side of the length measuring tool in which a predetermined position on the free end side is rotatably held. Prepare,
The length measuring tool fixing portion has an opening for visually recognizing a scale indicating a position different from a predetermined position on the free end side of the length measuring tool.
The length measuring tool is a line drawing support tool fixed to the length measuring tool fixing portion so that its longitudinal direction coincides with an extension line of the rotation axis of the wheel in a plan view .

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