JP6892546B1 - Bicycle type line pulling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a line drawing device suitable for line drawing of both a straight line and a curved line by one unit. Furthermore, it is possible to provide a line drawing device capable of reducing the labor required for the line drawing work. SOLUTION: A bicycle type line capable of attaching a powder container having a pair of first wheels fixed to both ends of the same axle, which is inserted inside and has a powder delivery member around it, in front of the vehicle. A pulling device, a pair of second wheels, a fixing portion removably fixed to the powder container, a tubular portion connected to the fixing portion, and a handle connected to the tubular portion. A bicycle-type line drawing device that is composed of a portion and can provide an angle between the traveling direction of the first wheel and the second wheel by rotating the tubular portion. [Selection diagram] Fig. 1

Description

The present invention relates to a line drawing device for drawing a white line or the like with lime or the like on a playground or the like. In particular, the present invention relates to a bicycle-type line drawing device capable of traveling on four wheels, which is a device suitable for drawing both straight and curved lines with one unit.

When using an outdoor playground in a physical education class in school education, a line drawing device is used to draw a line on the ground with powder such as lime.

Conventional line drawing devices include a powder container having a discharge port formed at the bottom, a rotatable axle provided at the bottom of the powder container, and a pair of wheels attached to both ends of the axle. , A type having an impeller provided inside a powder container and integrated with an axle for sending powder to a discharge port is known. The impeller rotates with the rotation of the axle, and by being guided by this rotation, the powder is discharged from the discharge port of the powder container and sprinkled on the ground to form a line.

Further, the line pulling device includes a two-wheel type having a pair of wheels (wheels rotating with the sending member) and a four-wheel type having a pair of front wheels (wheels rotating with the sending member) and a pair of rear wheels.

In general, the two-wheel type has a problem that it is difficult to draw an accurate straight line. Therefore, in order to draw an accurate straight line, it is necessary to stretch a measure, a rope, or the like as a guide line in advance and draw a line along the guide line, which requires labor. In addition, multiple people are required for work, which is a heavy burden on, for example, faculty and staff at school sites. On the other hand, the four-wheel type is suitable for drawing a straight line, but usually all four wheels are fixed wheels whose traveling direction is fixed in the same direction, so that it is difficult to draw a curve. ..

In order to solve such a problem, for example, in Patent Document 1, a four-wheel type line drawing device including a pair of front wheels (wheels rotating together with a delivery member) attached to both ends of an axle and a pair of rear wheels. Is disclosed.

In this four-wheel type line drawing device, if the line to be drawn is a straight line or a curve with a small curvature, both the front and rear wheels are fixed wheels, while a curve with a large curvature such as a circumference or an arc is drawn. In some cases, it is stated that the rear wheels are free wheels or omitted.

JP-A-2017-158657

However, Patent Document 1 does not describe how the wheels of the line drawing device are adjusted according to the line to be drawn, and one unit is suitable for drawing both straight and curved lines. The line drawing device was not disclosed.

Further, the line drawing device disclosed in Patent Document 1 is a line drawing device that is manually pulled by a user to draw a line, which requires a lot of labor.

In view of the above circumstances, it is an object of the present invention to provide a line drawing device suitable for drawing both a straight line and a curved line. Furthermore, it is an object of the present invention to provide a line drawing device capable of reducing the labor required for the line drawing work.

The bicycle-type line pulling device according to the present invention
A bicycle-type line pulling device that can attach a powder container having a pair of first wheels fixed to both ends of the same axle, which is inserted inside and has powder delivery members around it, in front of the vehicle. hand,
A pair of second wheels and
A fixing portion that is detachably fixed to the powder container and
The tubular part connected to the fixing part and
It consists of a handle part connected to the tubular part.
By rotating the tubular portion, an angle can be provided between the first wheel and the traveling direction of the second wheel.

According to the present invention, it is possible to provide a line drawing device suitable for drawing both a straight line and a curved line with one unit. Furthermore, it is possible to provide a line drawing device capable of reducing the labor required for the line drawing work.

It is a figure which shows the bicycle type line pulling apparatus which concerns on 1st Embodiment. It is explanatory drawing of the conventional line drawing apparatus in 1st Embodiment. It is a figure which shows the vehicle body of the bicycle in 1st Embodiment. It is a figure which shows the connecting member in 1st Embodiment. It is a figure which shows the state which fixed the connecting member with respect to a powder container in 1st Embodiment. It is a figure explaining the state in which the connecting member is connected to the vehicle body in 1st Embodiment. It is explanatory drawing of the usage of the bicycle type line pulling apparatus in 1st Embodiment. It is a figure which shows the bicycle type line pulling apparatus which concerns on 2nd Embodiment. It is a figure which shows the connecting member in 2nd Embodiment. It is a figure which shows the state which the connecting member is fixed to the powder container in the 2nd Embodiment. It is a figure explaining the state in which the connecting member is connected to the vehicle body in the 2nd Embodiment. It is a figure which shows the 1st modification of the embodiment which concerns on this invention. It is a figure which shows the 2nd modification of the embodiment which concerns on this invention. It is a figure which shows the 3rd modification of the embodiment which concerns on this invention. It is a figure which shows the bicycle type line pulling apparatus which concerns on 3rd Embodiment.

<First Embodiment>
FIG. 1 shows a bicycle-type line drawing device 1 according to the first embodiment of the present invention. The bicycle-type line drawing device 1 is composed of a conventional line drawing device 10, a bicycle vehicle body 20, and a connecting member 30 that connects the line drawing device 10 and the vehicle body 20.

FIG. 2 is an explanatory diagram of the line drawing device 10. 2 (a), 2 (b), 2 (c), and 2 (d) show 10 side views, front views, top views, and bottom views of the line drawing device, respectively.

The line drawing device 10 has a powder container 101 and a pair of wheels 102. Further, one axle 103 is inserted into the powder container 101, both ends thereof are exposed from the side surface of the powder container 101, and each of the pair of wheels 102 is fixed to both ends of the axle 103.

Further, inside the powder container 101, an impeller 104 is provided around the axle 103 as a powder delivery member. Further, a powder discharge port 105 that can be opened and closed by a sliding bar (not shown) is provided on the bottom surface of the powder container 101. Further, handlebar holders 106 are provided on both side surfaces of the upper portion of the powder container 101 so that the handlebar 107 can be attached.

The line drawing device 10 can draw a line by itself. For example, when the operator moves while pushing or pulling the handlebar 107, the pair of wheels 102 and the axle 103 of the line pulling device 10 rotate, and the impeller 104 rotates with the rotation, and the powder becomes powder. It is delivered to the body discharge port 105, and powder such as lime is discharged from the powder discharge port 105. That is, the powder is discharged to the line drawing device 10 as it moves, and is sprinkled on the ground or the like, and a line is formed by the traces thereof.

FIG. 3 is a diagram showing a vehicle body 20 of a bicycle. 3 (a) and 3 (b) show a side view and a top view of the vehicle body 20, respectively. The vehicle body 20 is a driving force transmission mechanism (not shown) for transmitting the driving force applied to the vehicle body frame 201, the pair of wheels 202, the chain 203, the crank 204, the pedal 205, the saddle 206, and the pedal 205 to the wheels 202. ), A stop mechanism such as a brake (not shown).

The vehicle body frame 201 has a portion extending in the vertical direction in the front portion of the vehicle body, and a plurality of annular members 207 to which the connecting member 30 can be rotatably attached are provided in the portion.

In FIG. 3, four annular members 207 of 207a, 207b, 207c, and 207d are provided in this order from the top. The annular members 207a, 207b, and 207c all have a hollow donut shape, and a tubular pipe member can be rotatably inserted. On the other hand, the lowermost annular member 207d has a shape in which the bottom surface is closed, and the tubular pipe member inserted into the upper three annular members can be supported from below so as not to pass through.

FIG. 4 is a perspective view showing the connecting member 30. The connecting member 30 is composed of a handlebar fixing portion 301, a connecting pipe 302, a T-shaped horizontal pipe 303, a vertical pipe 304, and a handle portion 305.

The handlebar fixing portion 301 can be attached to the handlebar 107 of the line pulling device 10 and is a member for fixing the connecting member 30 to the powder container 101. Two handlebar fixing portions 301 are prepared for mounting on the left and right sides of the handlebar 107. Each handlebar fixing portion 301 is a member that becomes an annular shape by fixing two semicircular annular members with bolts, and can be attached with the handlebar 107 inserted through the annular portion. If a wing bolt with a handle on the head is used as the bolt, it can be fastened by hand without using a tool.

The connecting pipe 302 is a member for attaching two handlebar fixing portions 301 at both ends and supporting them.

The T-shaped horizontal pipe 303 is composed of a hollow pipe portion 303a and a main body pipe portion 303b that is attached to the middle of the pipe portion 303a and extends in a direction orthogonal to the pipe portion 303a. A connecting pipe 302 is inserted through the hollow pipe portion 303a, and the connecting pipe 302 and the T-shaped horizontal pipe 303 are connected to each other.

The vertical pipe 304 is a tubular pipe member extending linearly, and the main body pipe portion of the T-shaped pipe 303 is attached so as to be orthogonal to the vertical pipe 304 in the middle thereof.

The handle portion 305 has a substantially T-shape, and is fixed to the upper portion of the vertical pipe 304 at its base end portion 305a. With the operation of the handle portion 305, the vertical pipe 304 is centered on the vertical direction. It can be rotated freely from side to side. Along with this, the T-shaped pipe 303 attached to the vertical pipe 304 also rotates freely to the left and right.

FIG. 5 is a diagram showing a state in which the connecting member 30 is fixed to the powder container 101 via the handle bar 107. 5 (a), 5 (b) and 5 (c) are views of this state as viewed from the side surface, the front surface and the upper surface of the line drawing device 10, respectively. The handlebar fixing portion 301 is attached to the handlebar 107 of the line pulling device 10, and the connecting member 30 is fixed to the powder container 101.

FIG. 6 is a diagram for explaining a state in which the connecting member 30 is connected to the vehicle body 20. In FIG. 6, the vertical pipe 304 of the connecting member 30 is attached to the annular member 207 of the vehicle body frame 201 of the vehicle body body 20. The vertical pipe 304 is inserted through the ring members 207a, 207b, and 207c, and is supported from below by the bottom ring member 207d.

A T-shaped horizontal pipe 303 extends from between the annular members 207a and 207b, and the T-shaped horizontal pipe 303 also rotates with the rotation of the vertical pipe 304. As described above, the T-shaped horizontal pipe 303 can be rotated left and right about the vertical direction by operating the handle portion 305. Further, the handle portion 305 may be fixed when the T-shaped horizontal pipe 303 is rotated by a predetermined angle. This makes it possible to easily draw an arc line by fixing it at a predetermined angle. Further, by providing a plurality of fixable angles, it is possible to easily draw a plurality of arcs having different radii. The above is a description of the configuration of the bicycle-type line drawing device 1 according to the present embodiment.

Next, a method of using the bicycle-type line drawing device 1 according to the present embodiment will be described. Before using the bicycle-type line drawing device 1, the powder container 101 is first filled with powder such as lime, and then the white line or the like is formed by pedaling the pedal 205 to advance the bicycle in the same manner as a general bicycle. You can draw a line.

FIG. 7 is a diagram for explaining how to use the bicycle type line drawing device 1. FIG. 7A shows a state in which a straight line is drawn by the bicycle-type line drawing device 1. The line drawing device 10 is fixed to the connecting member 30, and the center line CL of the line drawing device 10 coincides with the center line of the T-shaped horizontal pipe 303 of the connecting member 30.

Here, the handle portion 304 of the connecting member 30 is adjusted before use so that the center lines of the line drawing device 10 and the vehicle body 20 coincide with each other in a straight line CL. When the user gets on the saddle in this state, the center line of the user's body also matches CL, and the center line of the line drawing device 10, the center line of the vehicle body 20, and the center line of the user coincide with CL. ..

The user pedals the bicycle-type line pulling device 1 to go straight, and discharges the powder from the powder discharge port 105 of the powder container 10 or the powder. At this time, since the pair of wheels 101 and the pair of wheels 202 are both fixed wheels, the bicycle-type line pulling device 1 can travel stably with the four wheels, and the traveling direction of the bicycle-type line pulling device 1 does not deviate from the CL. Therefore, an accurate straight line can be drawn.

On the other hand, FIG. 7B shows a state in which a curve is drawn by the bicycle-type line drawing device 1. Similarly to FIG. 7A, the line drawing device 10 is fixed to the connecting member 30, and the center line CL of the line drawing device 10 coincides with the center line of the T-shaped horizontal pipe 303 of the connecting member 30.

On the other hand, the handle portion 304 of the connecting member 30 is adjusted so that the center line CL of the line drawing device 10 forms a predetermined angle α with the center line CL'of the vehicle body 20. As a result, an angle can be provided between the traveling direction of the front wheel 101 and the traveling direction of the rear wheel 202, and a curve can be drawn.

As described above, according to the bicycle-type line drawing device according to the present embodiment, it is possible to provide a line drawing device suitable for both straight line and curved line drawing by one unit. In addition, since the worker can ride on the saddle and pedal to run, the labor required for the line drawing work can be reduced.

<Second embodiment>
FIG. 8 shows a bicycle-type line drawing device 2 according to a second embodiment of the present invention. The automobile-type line drawing device 2 is composed of a conventional line drawing device 10, a bicycle vehicle body 20, and a connecting member 40 that connects the line drawing device 10 and the vehicle body 20.

Since the conventional line drawing device 10 and the vehicle body 20 of the bicycle have already been described in the first embodiment, the description thereof will be omitted.

FIG. 9 is a diagram showing a connecting member 40. The connecting member 40 is composed of a powder container fixing portion 401, a connecting pipe 402, a T-shaped horizontal pipe 403, a vertical pipe 404, and a handle portion 405.

In the connecting member 30 according to the first embodiment, the handlebar fixing portion 301 is attached to the handlebar 107 of the line pulling device 10, and the connecting member 30 is fixed to the powder container 101 via the handlebar 107. On the other hand, the connecting member 40 according to the second embodiment is different in that the powder container fixing portion 401 is directly attached to the powder container 101 and the connecting member 30 is fixed to the powder container 101. ..

Two powder container fixing portions 401 are prepared for mounting on the left and right sides of the powder container 101. Each powder container fixing portion 401 is a plate-shaped member, and is fixed so as to sandwich both side surfaces from the middle to the bottom of the powder container 101. The connecting pipe 402 has two powder container fixing portions 401 attached to both ends and supports them. Further, the connecting pipe 402 can be expanded and contracted, can be adjusted to a required length, and can be fixed to an arbitrary length. As a result, by adjusting the length of the connecting pipe 402 to be shorter while sandwiching both side surfaces of the powder container 101 between the powder container fixing portions 401 attached to both ends, the powder container fixing portion 401 can be used. The powder container 101 can be firmly fixed.

The T-shaped horizontal pipe 403 has the same configuration as the T-shaped horizontal pipe 303.

The vertical pipe 404 is a pipe member extending linearly, and the main body pipe portion of the T-shaped pipe 403 is attached so as to be orthogonal to the vertical pipe 404 at the lower portion.

The handle portion 405 has the same configuration as the handle portion 305.

FIG. 10 is a diagram showing a state in which the connecting member 40 is fixed to the powder container 101. 10 (a), 10 (b), and 10 (c) are views of this state as viewed from the side surface, front surface, and top surface of the line drawing device 10, respectively. The powder container fixing portion 401 is attached to the powder container 101 of the line drawing device 10, and the connecting member 30 is fixed to the powder container 101.

FIG. 11 describes a state in which the connecting member 40 is connected to the vehicle body 20. In FIG. 11, the vertical pipe 404 of the connecting member 40 is attached to the annular member 207 of the vehicle body frame 201 of the vehicle body body 20. The vertical pipe 404 is inserted through the ring members 207a, 207b, and 207c, and is supported from below by the bottom ring member 207d.

A T-shaped horizontal pipe 403 extends from between the annular members 207c and 207d, and the T-shaped horizontal pipe 403 also rotates with the rotation of the vertical pipe 404. The above is a description of the configuration of the bicycle-type line drawing device 2 according to the second embodiment.

The method of using the bicycle-type line drawing device 2 according to the present embodiment is the same as that of the bicycle-type line drawing device 1, and thus is omitted.

Also in the bicycle type line drawing device 2 according to the present embodiment, it is possible to provide a line drawing device suitable for both straight line and curved line drawing by one unit. In addition, since the worker can ride on the saddle and pedal to run, the labor required for the line drawing work can be reduced.
<Third embodiment>

FIG. 15 shows a bicycle-type line drawing device 3 according to a third embodiment of the present invention. In the present embodiment, the vehicle body 23 is used instead of the vehicle body 20 of the first and second embodiments. The vehicle body 23 includes a body frame 502 extending diagonally upward in the front instead of the body frame 201 of the vehicle body 20. Further, the vehicle body 23 further includes a front fork portion 501, an annular portion 503, and a steering wheel portion 505 in the front.

The front fork portion 501 is composed of 501a and 501b. 501a is a pipe-shaped tubular portion that is connected to the handle portion 505 and can be rotated by operating the handle portion 505. 501b is a fork portion whose tip is bifurcated like a fork. The annular portion 503 is fixed to the tip of the vehicle body frame 502, and the pipe-shaped tubular portion 501a is rotatably inserted.

The connecting member 41 used in the present embodiment includes a powder container fixing portion 401, a connecting pipe 402 (not shown in FIG. 15), and a T-shaped horizontal pipe 403 in the connecting member 40 shown in FIG. Will be done. The powder container fixing portion 401 is supported by the connecting pipe 402, and is fixed to the powder container 10 by adjusting the length of the connecting pipe 402. Further, the powder container fixing portion 401 is connected to the tubular portion 501a via a T-shaped horizontal pipe 403 and a fork portion 501c. The T-shaped horizontal pipe 403 is attached to the tip of the fork portion 501b by any method.

In the present embodiment, the tubular pipe member and the handle portion, which were a part of the connecting member in the first and second embodiments, are made a part of the vehicle body side. By operating the handle portion 505, the tubular portion 501a can be rotated. Along with this, the T-shaped pipe 303 attached to the tip of the fork portion 501b also rotates freely to the left and right. As a result, by adjusting the handle portion 505, an angle can be provided between the traveling direction of the front wheel 101 and the traveling direction of the rear wheel 202, and a curve can be easily drawn.

The method of using the bicycle-type line drawing device 3 according to the present embodiment is the same as that of the bicycle-type line drawing devices 1 and 2, and thus is omitted.

Also in the bicycle type line drawing device 3 according to the present embodiment, it is possible to provide a line drawing device suitable for both straight line and curved line drawing by one unit. In addition, since the worker can ride on the saddle and pedal to run, the labor required for the line drawing work can be reduced.
<Modified example of the embodiment according to the present invention>

FIG. 12 shows a first modification of the embodiment according to the present invention. In this modification, the main body vehicle 21 in which a pair of training wheels 208 is added to the vehicle main body 20 of the first and second embodiments of the present invention is used.
For example, the pair of training wheels 208 are arranged symmetrically with respect to the center line of the vehicle body 21 below the vehicle body front portion of the vehicle body frame 201. As a result, even when the user gets on the saddle, the vehicle body can be tilted forward and can run stably without losing the balance. Further, the pair of training wheels 208 may be free wheels. In that case, it is suitable for drawing a curve.

Further, FIG. 13 shows a second modification of the embodiment according to the present invention. In this modification, instead of the vehicle body 20 of the first and second embodiments of the present invention, the vehicle body 22 whose saddle portion can be adjusted back and forth is used. This makes it possible to adjust the vehicle body so that it does not tilt back and forth when the user gets on the saddle.

Further, FIG. 14 shows a third modification of the embodiment according to the present invention. In the third modification, a contact switch 209 that turns on when the center lines of the line drawing device 10 and the vehicle body 20 coincide with each other in a straight line CL is provided. Then, a light that lights up only when the contact switch 209 is turned on is provided at a place where the user can see it.

For example, in the case of the first embodiment, as shown in FIG. 14A, a contact switch is provided between the T-shaped horizontal pipe 303 of the connecting member 30 and the annular member 207a of the vehicle body frame 201. Can be done. Further, in the case of the second embodiment, as shown in FIG. 14B, a contact switch is provided between the T-shaped horizontal pipe 403 of the connecting member 40 and the annular member 207c of the vehicle body frame 201. Can be done.

However, the location of the contact switch is not limited to these locations, and any configuration can be used as long as it is configured to be turned on when the center lines of the line drawing device 10 and the vehicle body 20 coincide with each other in a straight line CL. You may.

Then, a light that lights up only when the contact switch 209 is turned on is provided at a place where the user can see it. The power source of the light may be a dynamo type that generates electricity by the rotational force of the bicycle and lights up, or a battery type. The connection method between the light, the contact switch, and the power supply is not particularly limited, and any method may be used.

With this configuration, the user can confirm that the bicycle-type line drawing device goes straight and a straight line is drawn. In addition, the user can focus on drawing a straight line by operating the handle portion 305 or 405 so that the light is always on.

1, 2 Automotive line pulling device 10 Conventional line pulling device 20, 21, 22 Bicycle vehicle body 30, 40 Connecting member 101 Powder container 102 Pair of wheels 103 Axle 104 Impeller 105 Powder outlet 106 Handle Bar Holder 107 Handlebar 201 Body Frame 202 Pair of Wheels 203 Chain 204 Crank 205 Pedal 206 Saddle 207a, 207b, 207c, 207d Ring Member 208 Pair of Auxiliary Wheels 209 Contact Switch 301 Handlebar Fixation 302, 402 Connecting Pipe 303, 403 T-shaped horizontal pipe 304, 404 Vertical pipe 305, 405 Handle part 401 Powder container fixing part 3 Automobile type line pulling device 23 Bicycle vehicle body 41
501 Front fork part 501a Tubular part 501b Fork part 502 Body frame 503 Ring part 505 Handle part 505

Claims (5)

Is inserted therein, the powder delivery member have a pair of first wheels that are fixed to both ends of the same axle is provided about, a possible second handle portion is mounted, as a line pull system alone a powder container with a function,
A pair of second wheels and
A fixing portion that is repeatedly and removably fixed to the powder container so that the powder container can be removed and used as a line drawing device.
The tubular part connected to the fixing part and
It consists of a first handle portion connected to the tubular portion.
Wherein by rotating the tubular portion, wherein between the first wheel and the second wheel traveling direction of the can be provided angle, bicycle-type line gumming unit that having a the powder container forward. Is inserted therein, the powder delivery member have a pair of first wheels that are fixed to both ends of the same axle is provided about, a possible second handle portion is mounted, as a line pull system alone A powder container with the function of
A pair of second wheels, a tubular portion rotatably attached in front, and a vehicle body portion having a first handle portion connected to the tubular portion.
A connecting member for connecting the powder container and the vehicle body is provided.
The connecting member has a fixing portion that is repeatedly removably fixed to the powder container and connected to the tubular portion so that the powder container can be removed and used as a line drawing device. ,
A bicycle-type line drawing device capable of providing an angle between the first wheel and the traveling direction of the second wheel by rotating the tubular portion. Is inserted therein, the powder delivery member have a pair of first wheels that are fixed to both ends of the same axle is provided about, a possible second handle portion is mounted, as a line pull system alone A powder container with the function of
A vehicle body having a pair of second wheels,
A connecting member for connecting the powder container and the vehicle body is provided.
The connecting member
A fixing portion that is repeatedly and removably fixed to the powder container so that the powder container can be removed and used as a line drawing device.
The tubular part connected to the fixing part and
It consists of a first handle portion connected to the tubular portion.
The tubular portion of the vehicle body can be rotatably attached to the front portion.
A bicycle-type line drawing device capable of providing an angle between the first wheel and the traveling direction of the second wheel by rotating the tubular portion. The bicycle-type line drawing device according to claim 1, wherein a pair of training wheels are provided in front of the second wheel. The bicycle-type line drawing device according to claim 1 to 4, further comprising a contact switch that turns on when the center line of the powder container and the center line of the vehicle coincide with each other.

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