JPH074062Y2 - Line drawing - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a line drawing suitable for use in a sports field, a ball game field such as baseball.

[Problems to be Solved by Conventional Techniques and Inventions] Conventionally, powdered lime or the like has been widely used as a line forming material. Since this lime has a hygroscopic property, it easily aggregates. Therefore, when powdered lime or the like is used for line drawing, the line drawing outlet is likely to be clogged and the line may not be drawn smoothly.

In view of such problems, Japanese Utility Model Publication No. 58-46852 discloses that
The rotating shaft to which the wheel is attached, and this rotating shaft is attached,
A line marker is disclosed that includes a drum that rotates together with wheels, brush plates that are provided at equal intervals on the drum, and a swab provided on the drum between the brush plates. Further, Japanese Utility Model Publication No. 63-7266 discloses that a drum having brush plates formed at equal intervals and rotating along with wheels is provided above the discharge port, and scrapes between the brush plates. A line marker having a protruding line is disclosed.

These line markers are such that when the line marker is moved while it is grounded to the ground, the lime is scraped out with stirring with a brush plate and a swab or a scraping line as the wheel and drum rotate. is there.

However, since the lime scraped out in the agitated state is discharged from the discharge port by natural fall, a large amount of lime tends to spontaneously fall at once, and the discharge amount of the powdered lime and thus the line width cannot be controlled. In particular, the stirring speed of lime etc. is proportional to the rotation speed of the wheel, so if the moving speed of the line marker is increased to draw the line quickly, the amount of lime etc. scattered will increase and the line with a predetermined width will be accurately measured. It will be difficult to pull smoothly. In this way, with conventional line drawing, it is difficult to control the discharge amount of lime etc. on one side,
There is a problem that the line cannot be drawn to a predetermined width while suppressing the scattering of lime and the like.

Further, since the lime powder and the like are discharged by natural fall, the lime powder and the like having a cohesive property are gradually accumulated around the discharge port, and the discharge port becomes narrow. In particular, in the line marker described in JP-B-63-7266, since the scratch line is located at the discharge port, the dropping or discharge of powdered lime is suppressed by the scratch line, and the discharge port is blocked with lime or blocked. If not done, lime will gradually build up and be prone to clogging. in this way,
In the conventional line drawing, the line forming powder is deposited around the discharge port on the other side and the discharge port is narrowed, so that the amount of powder falling from the discharge port becomes small and a line with a predetermined width cannot be drawn. There was also a problem.

The present invention can prevent the clogging of the discharge port, and can quantitatively convey the line forming powder without letting it fall by gravity, and can discharge the powder while suppressing the scattering, so that the line can be uniformly and accurately smoothed. It is an object to provide a line drawing that can be drawn.

[Means for Solving the Problems] The line drawing according to the present invention includes a container 1 for containing powder.
And a lower part 4 having a discharge port 3 communicating with the accommodation part 1
And a cylindrical body 8 that is rotatably disposed in the lower portion 4 and that conveys powder to the discharge port 3, the cylindrical body 8 being recessed in parallel in the axial direction. Has a plurality of annular recessed grooves 10, 10 formed therein, and at a position corresponding to each of these annular recessed grooves 10, a plurality of strip-shaped bodies 11, 11 having a solid circular cross section are horizontally provided at the discharge port 3. It was erected.

[Operation] In the present invention having the above-described configuration, the powder contained in the containing portion 1 is supplied to the lower portion 4 communicating with the powder.
Inside, the powder is conveyed to the discharge port 3 in a state where the powder is contained in the plurality of annular recessed grooves 10, 10 that are provided in parallel with each other in the axial direction of the cylindrical body 8 disposed therein. That is, since the amount of powder conveyed along with the rotation of the cylindrical body 8 is proportional to the volume of the annular concave grooves 10, 10, the volume of the annular concave groove 1 is made constant by the constant volume.
The powders contained in 0 and 10 are uniformly and quantitatively transported from the container 1 to the outlet 3 along the circumference of the cylindrical body 8. Therefore, unlike the conventional case, not only a large amount of the agitated powder does not drop into the discharge port 3 at a time, but also the scattering of the powder during the transportation and the discharge can be remarkably suppressed.

Further, the powder contained in the annular concave grooves 10, 10 of the rotating cylindrical body 8 and conveyed to the discharge port 3 has a solid circular cross section (that is, , (Cylindrical) due to the interaction with the strips 11, 11 is once caught between the annular groove 10, 10 and the strips 11, 11 and then pushed out and discharged while being quantitatively uniformized. To be done. That is, the powder in the plurality of annular recessed grooves 10, 10 is along the both side surfaces from the upper surface of each strip 11 having a solid circular cross section which is horizontally installed at a position corresponding to each recessed groove 10. That is, since the particles fall along the roundness in a state of gradually diffusing, the powder of substantially the same amount is also sprayed immediately below the adjacent strips 11, 11. Therefore, the distribution of the powder falling from the discharge port 3 is averaged, and a uniform line can be drawn accurately.

Embodiment Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

FIG. 1 is a partially cutaway schematic perspective view showing an embodiment of the present invention,
2 is a schematic cross-sectional view of the main part of the side surface of FIG. 1, FIG. 3 is a schematic cross-sectional view of the main part of the front surface of FIG. 1, and FIG.
FIG. 11 is a partially enlarged explanatory view showing a state in which the strip 11 having a solid circular cross-section horizontally erected at a position corresponding to is dropped along the both side surfaces from the upper surface, that is, along the roundness while gradually diffusing. .

The line drawing of the present embodiment includes a container 1 for containing a line forming material such as powdered lime, a lid 2 for closing an upper opening of the approximate container 1, and a discharge port 3 communicating with the container 1. And a lower portion 4 formed with. The lower part 4 is attachable to and detachable from the housing part 1. In addition, a handle 12 is attached to the upper part of the accommodating portion 1 for moving the line pull, and when the line pull work is not performed, the support leg 5 is provided to stably hold the line pull on the ground. Installed.

A shaft 6 is rotatably disposed on the lower portion 4, and
Wheels 7, 7 are attached to both ends of a shaft 6 extending outward on both sides.

Further, as shown in FIGS. 2 and 3, a rubber cylindrical body 8 is attached to the shaft 6 of the housing portion 1 so as to face the discharge port 3. The cylindrical body 8 rotates coaxially with the wheels 7, 7. In order to smoothly guide the powder contained in the container 1 to the cylindrical body 8 of the lower portion 4,
As shown in FIG. 3, the front surface, the rear surface, and the left and right side surfaces of the accommodating portion 1 are respectively inclined inward, and reach the upper portions on both sides of the cylindrical body 8 in a substantially tapered shape.

In the axial direction of the cylindrical body 8, a large number of rubber fins 9, 9 are arranged in parallel at equal intervals, and the fins 9, 9 adjacent to each other are arranged.
The spaces are formed as annular recessed grooves 10, 10. In addition,
In this example, the cylindrical body 8 and the fins 9 and 9 are integrally formed.

When such annular recessed grooves 10, 10 are formed, the powder accommodated in the accommodating portion 1 and supplied to the lower portion 4 is rotated by the rotation of the wheels 7, 7 and the cylindrical body 8, and the annular recessed grooves 10, 10 are formed. While being held inside, it is conveyed to the discharge port 3. Further, since the amount of powder contained is defined by the volume of the annular recessed grooves 10, 10, unlike the natural drop method, the amount of conveyance can be easily controlled. Furthermore, since the cylindrical body 8 and the fins 9 and 9 are made of rubber, even if stones or the like are mixed into the transfer area from the outside or powder is solidified in the annular groove 10, rubber elasticity causes Stones, solidified powder, etc. can be easily removed. Also,
Since it is a rubber fin, it is easily worn, but the fastener 4 can be opened to remove the lower portion 4 from the housing portion 1, and the integrated unit of the cylindrical body 8 and the fins 9, 9 can be easily replaced.

A plurality of strips 11 having a solid circular cross section are horizontally installed from the opposite walls of the discharge port 3 so as to be positioned in the annular recessed grooves 10. There is. Therefore, the powder contained in the annular recessed grooves 10, 10 is first transferred to the cylindrical body 8
As it rotates, it falls along its circumferential direction and, as shown in FIG. 4, each strip having a solid circular cross section.
It will be discharged from the discharge port 3 while being sprayed laterally along the rounded outer periphery from above the 11, 11. Even if the powder does not drop smoothly from the annular groove 10, 10, even if agglomerates of the powder accumulate in the annular groove 10,
Such residual powder can be easily removed from the annular groove 10. That is, with the rotation of the cylindrical body 8, the sliding contact force is exerted on the residual powder by the annular recessed grooves 10, 10 and the strip-shaped bodies 11, 11 arranged in these recessed grooves and having a solid circular cross section. The elastic force generated by the elastic deformation of the rubber cylindrical body 8 and the fins 9, 9 causes the residual powder to be shaken off to some extent, and the residual powder is also scraped off by the sliding contact force. Be done. Therefore, the discharge port 3 is not blocked by the powder.

According to the line drawing in the above-mentioned embodiment, when the line drawing is moved by the handle 4 in a state where the wheels 7, 7 are grounded, the powder contained in the containing portion 1 is moved along with the rotation of the wheels 7, 7. It can be accommodated in the annular groove 10 of the cylindrical body 8 and can be forcibly conveyed to the discharge port 3 by a fixed amount. Further, along the circumferential direction of the annular groove 10, that is, each strip 1 having a solid circular cross section.
Powder can be gradually dropped from above 1 and 11 along the rounded outer circumference, and the distance between the powder drop part and the discharge port is small, so even if you draw a line at high speed, powder Can be remarkably suppressed. Furthermore, the falling powder is
Lines are evenly distributed as they are scattered laterally along the rounded outer circumferences of the adjacent strips 11 and 11 having solid circular cross-sections, and also directly below the fins 9 and 9. It can be drawn sharply (uniformly) and within a specified width.

The width and depth of the annular groove 10 defined by the distance and height between the fins 9 and the number of the annular grooves 10 should be set in accordance with the powder carrying property and the carrying amount. Further, the arrangement position of each strip 11 can be appropriately set within a range that does not impair the width and uniformity of the line. For example, the width and depth of the annular groove 10 are usually 3 to 7 mm, preferably 5
The diameter of the strip 11 can be 1 to 3 mm, preferably about 2 mm. In addition, each strip 11,
Usually, the fins 9 and 9 are provided in the center portion of the annular groove 10 in the width direction.
Is installed slightly inward of the tip of the.

Further, the cylindrical body 8 may be solid or may have a hollow drum shape. The cylindrical body 8 and / or the fins 9, 9 are
It may be made of metal, but preferably polyethylene,
Made of synthetic resin such as polypropylene, more preferably,
It is made of rubber having elasticity as in the above embodiment. If necessary, notches may be regularly or irregularly formed in the peripheral portion of the fin.

The annular recessed grooves 10, 10 may be formed by annular grooves formed on the peripheral surface of the cylindrical body 8 instead of the fins 9, 9 of the cylindrical body. The annular grooves 10, 10 may be V-shaped, U-shaped or the like in cross section, but the intervals are preferably regular. Annular groove 1
0 and 10 may have a meandering shape as long as the spreading properties of the strips 11 and 11 are not impaired.

Further, the outlet 3 can be set to various widths according to the event such as competition. The strips 11, 11 are not limited to circular cross sections,
It may have a triangular cross section or the like. If the strip has a triangular cross-section, dispose the strip with the top facing the inner side of the annular groove, and the slanted surfaces on both sides of the strip will keep the fallen powder sideways. You can spray evenly while guiding to.

The present invention is not limited to the line drawing shown in the drawing, and can be applied to line drawing of various shapes and sizes.

[Advantages of the Invention] As described above, according to the line drawing of the present invention, the cylindrical body rotatably provided in the lower portion has a plurality of annular concave grooves that are provided in parallel in the axial direction. In addition, since a strip having a solid circular cross section is erected at a position corresponding to each annular groove in the discharge port, the volume of the annular groove that can be set appropriately determines the storage amount of the powder. Unlike the free fall method, the powder can be quantitatively transported and the transport amount can be controlled. Therefore, it is possible to prevent an excessive amount of powder from dropping all at once. Moreover, since the powder is gradually dropped from the upper part of each strip having a solid circular shape along the rounded outer periphery and is discharged from the discharge port, it is possible to discharge the powder while suppressing the scattering of the powder. As a result, it is possible to prevent clogging of the discharge port and to draw the line uniformly and accurately and smoothly.

[Brief description of drawings]

FIG. 1 is a partially cutaway schematic perspective view showing an embodiment of the present invention, FIG. 2 is a schematic sectional view of a side main part of FIG. 1, and FIG. 3 is a schematic sectional view of a front main part of FIG. FIG. 4 shows that the fine particles, each having a solid circular cross section and horizontally installed at positions corresponding to the concave grooves, fall from the upper surface along both side surfaces, that is, along the roundness while gradually diffusing the powder. It is a partial expansion explanatory view showing a state. 1 ... accommodation part, 3 ... discharge port, 4 ... bottom, 8 ... cylindrical body 9 ... fin, 10 ... annular groove, 11 ... strip body

Claims (1)

[Scope of utility model registration request] 1. A storage part 1 for storing powder, a lower part 4 having a discharge port 3 communicating with the storage part 1, and a rotatably arranged inside the lower part 4, wherein the powder is A line drawing provided with a cylindrical body 8 to be conveyed to the discharge port 3, wherein the cylindrical body 8 has a plurality of annular concave grooves 10, 10 which are provided in parallel in the axial direction. A line drawing characterized in that a plurality of strips 11 having a solid circular cross section are horizontally installed at the discharge port 3 at a position corresponding to the groove 10.