JP2002136636A - Line drawing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a line drawing device capable of drawing a line of a specified length by the minimum number of persons. SOLUTION: This line drawing device draws a line by discharging powder for the line drawing device from a hole provided in the lower end of a storage part, following the rolling motion of a wheel. The line drawing device is provided with a distance measuring device for measuring the rolling distance of the wheel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a line drawing device.

[0002]

2. Description of the Related Art School grounds are, for example, baseball,
Used in various sports such as softball, soccer, handball, and athletics. In the case of a multipurpose ground or the like as described above, it is necessary to redraw a line such as a side line, a goal line, a foul line line by a line drawing device every time the competition changes.

By the way, side lines, goal lines,
The length of the foul line line and the like differs for each competition. Therefore, first measure the length of the line to be drawn with the measure, mark it on the ground, and draw a line with a line drawing device along this mark, or hold the both ends of the measure with an assistant. A line is drawn by a line drawing device along a major.

However, when measuring the length of a line with a measure, at least two people are required. In the case of drawing a line along the measure as in the latter method, if the line is long, it is necessary to arrange not only both ends of the measure but also a staff member for holding the measure so as not to move in the middle part. Moreover, since the line drawing device operation and the length measurement operation using the measure must be performed separately,
Bad workability.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a line drawing apparatus capable of accurately drawing a line of a predetermined length with a minimum number of persons in view of the above circumstances.

[0006]

In order to achieve the above object, a line drawing apparatus according to the present invention is provided with a hole provided at the lower end of a receiving portion of the powder for the line drawing apparatus as the wheels roll. A line drawing device that draws a line by discharging in a line from the vehicle has a distance measuring device that measures the rolling distance of a wheel.

Further, the line drawing device of the present invention preferably has a notifying means for notifying a user that the set distance has been detected by the distance measuring device.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below.
This will be described in detail with reference to the drawings. 1 and 2 show one embodiment of a line drawing device according to the present invention.

As shown in FIG. 1, this line drawing device A
Comprises a main body 1, a distance measuring device 2, and a card storage unit 3. The main body 1 is provided with two wheels 11, an accommodating portion 12, and a handle portion 13, like the conventional line drawing device, such as calcium carbonate accommodated in the accommodating portion 12 as the wheels 11 roll. Storage unit 1 for powder for line drawing device
2 A line (not shown) provided at the lower end is discharged in the form of a line to draw a line.

The distance measuring device 2 has a measuring roller (not shown) that contacts the wheel surface at the upper end of the wheel 11 and rotates in synchronization with the rotation of the wheel 11, There is provided a counter 21 for adding the rolling distance of the wheel 11, that is, the moving distance of the main body 1, and displaying the result in analog form by transmitting the rotation of the roller by a gear. As shown in the figure, the counter 21 has a display unit 22 capable of displaying up to 10 cm, and all values on the display unit 22 are set to 0.
, And is fixed to the side wall surface of the housing section 12 so that the numbers on the display section 22 are arranged in a horizontal direction.

The card storage section 3 is fixed to the lid 14 of the storage section 12, and a picture of a court or a field for each competition is drawn, and a plurality of cards 31 in which dimensions of each section are written are stacked. The uppermost card 31 can be visually recognized through a transparent window provided on the upper surface.

The line drawing apparatus A can be used, for example, as follows. First, a card 31 of a competition in which a line is to be drawn is selected from the cards 31 accommodated in the card accommodating section 12 and accommodated in the card accommodating section 12 in a state where the card 31 is at the top.

Then, while moving the line drawing device B to the starting point of the line to be drawn, the reset button 23 of the counter 21 is pressed and the display on the display unit 22 is all set to 0.
To Next, the user holds the handle portion 13 in the same manner as a known line drawing device having the handle portion 13, pushes the main body 1 in the direction of drawing the line, rolls the wheels 11 along the ground, and draws the line.

The display of the counter 21 is the card 31
When the display of the line dimensions to be drawn displayed in
The main body 1 is stopped to complete the line drawing.

As described above, this line drawing device A
Since the distance measuring device 2 is provided, it is not necessary to measure the length of the line to be drawn by the measure in advance, to put a mark on the ground, or to press both ends of the measure with an assistant. That is, a predetermined line can be easily drawn alone. In addition, a card storage unit 3 is provided, in which a picture of a court or a field for each competition is drawn and a card 3 in which dimensions of each unit are written.
1 can be stacked and accommodated, and the display of the uppermost card 31 can be seen through the transparent window provided on the upper surface, so remember the length of the line to be drawn. Even if it is not, the length of the line can be easily confirmed by looking at the card 31. Therefore, anyone can draw a line easily and accurately.

FIGS. 3 to 5 show another embodiment of the line drawing apparatus according to the present invention. As shown in FIG. 3, the line drawing device B is the same as the line drawing device A except that the card storage unit 3 is not provided and the distance measuring device 5 is as follows. I have.

That is, as shown in FIG. 4, the distance measuring device 5 includes a sensor unit 6 and a device main unit 7.
The sensor unit 6 is mounted on the axle of the wheel 11, measures the rotation of the axle by the rotary encoder 61, and sends the signal to a calculation unit 75 of the apparatus main unit 7, which will be described in detail later.

The main body 7 is provided with a handle 13 of the main body 1.
And an operation panel 71 as shown in FIGS. 4 and 5, and a computing means 75 such as a microcomputer. The operation panel 71 has a digital display 7
2, a large number of operation buttons 73, and a buzzer 7 for notifying that the line for the set distance has been drawn.
4 is provided.

The arithmetic means 75 integrates the moving distance of the main body 1 from the start of the rotation of the wheel 11 to the time, that is, the length of the line that has been pulled from the signal sent from the sensor section 6, and digitally displays the result. In addition to the display at 72, the moving distance is compared with the length of the set line, and when the moving distance is shorter than the length of the set line by 10 cm, the buzzer 74 sounds and the operator is notified that the set distance is approached. Is to be announced. Although not shown, the sensor section 6 and the apparatus main body section 7 are connected via a wire passing through the inside of the housing section 12 and the inside of the handle section 13.

The line drawing apparatus B can be used as follows. First, the operator operates the operation button 73 of the operation panel 71 to set the length of the line to be drawn. At this time, the digital display 72 displays the set line length.
Then, after the setting is completed, the operation button 73 is operated to set the measurement start state. When the measurement is started, the display on the digital display unit 72 returns to 0 once.

Next, like the known line drawing device, the user holds the handle portion 13 and pushes the main body 1 in the direction of drawing the line to roll the wheel 11 along the ground and draw the line. Then, the buzzer 74 sounds and the operator stops the main body 1 and checks the display on the digital display 72. If the display on the digital display 72 is shorter than the set length, the display on the digital display 72 is displayed. Is stopped until the set value reaches the set value, and the line drawing is completed.

The line drawing apparatus B has the above-described effects, and has the same effects as the line drawing apparatus A, and notifies that the line drawing of the length set by the buzzer 74 has been completed. Digital display unit 72 until the line is almost completed.
There is no need to check for better workability. Further, since the buzzer 74 is sounded 10 cm before the end point of the line, there is no overrun even if there is a time lag from when the buzzer 74 sounds until the operator stops the main body 1.

The line drawing device according to the present invention is not limited to the above embodiment. For example, in the above-described line drawing device A, the numbers on the display unit 22 of the counter 21 are provided so as to be arranged in the horizontal direction, but may be arranged in the vertical direction. In the above-described line drawing device B, the buzzer 7 is used as a notifying means for notifying that the set distance has been reached.
Although 4 is provided, it may be notified by light such as by blinking a lamp or the like. Further, a notifying means such as a buzzer may be provided in an analog type such as the line drawing device A.

Further, a shutter is provided at the hole of the container 12 so that when the set distance is reached, the shutter automatically closes the hole of the container 12 so that the powder for the line drawing device does not come out. No problem.

The card storage unit 3 may be provided in the line drawing device B in the same manner as the line drawing device A. Further, the dimension data of the court and the field of each competition is stored in the apparatus main body 7, and the length of the line to be drawn can be automatically determined by operating the operation button 73 and selecting the type of the competition and the line. It may be settable. In addition, an azimuth meter or the like may be mounted on the main body 1 at a position that can be visually recognized by an operator when performing a line drawing operation so that a straight line can be accurately drawn.

In the above-described line drawing apparatus B, after setting the length of the line to be drawn and operating the operation button 73 to start the measurement, the display on the digital display section 72 is returned to 0 once. However, it is also possible to always display the set line length data and display it so that the length of the line actually drawn below or beside it can be compared,
The length of the subtracted line is subtracted from the length of the lowered line, and displayed on the digital display unit 72.
The line drawing may be completed when the display of 2 becomes 0.

Each of the line drawing apparatuses A and B has two wheels, but may have four wheels.

[0028]

Since the line drawing apparatus according to the present invention is configured as described above, the length of the line to be drawn by the measure is measured in advance, and the line is marked on the ground, Work such as holding down both ends by an assistant becomes unnecessary. That is, it is possible to easily draw a predetermined line by arranging a minimum number of personnel. In particular, according to the second aspect, a line of a predetermined length can be accurately drawn without the operator checking the display on the display unit.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a line drawing device according to the present invention.

FIG. 2 is a plan view of a display unit of the line drawing device of FIG. 1;

FIG. 3 is a perspective view showing another embodiment of the line drawing device according to the present invention.

FIG. 4 is a block diagram of a distance measuring device of the line drawing device of FIG. 3;

FIG. 5 is a plan view of an apparatus main body of the line drawing apparatus of FIG. 3;

[Explanation of symbols]

 A, B Line drawing device 1 Main body 2, 5 Distance measuring device 11 Wheel 12 Housing 74 Buzzer (notification means)

Claims (2)

[Claims] 1. A line drawing device which draws a line by discharging powder for the line drawing device in a line form from a hole provided at a lower end of a housing portion with the rolling of a wheel.
A line drawing device comprising a distance measuring device for measuring a rolling distance of a wheel. 2. A notifying means for notifying a user that the distance measuring device has detected a set distance.
The line drawing device according to 1.