Bicycle-type line drawing device

Abstract

When the wheels of the powder container are in the first state where they are in contact with the ground, the powder container is unstable and it is not possible to draw a line accurately on the ground. [Solution] The powder container and the vehicle main body are connected by inserting a rod member that stands vertically on a rotating member that can rotate left and right at the front of the vehicle main body into the connecting tube of the connecting part, thereby stabilizing the powder container and preventing it from shaking when an operator performs line drawing work.

Description

[Technical field]

[0001] The present invention relates to a line drawing device for drawing white lines with lime or the like on playgrounds. In particular, the device is suitable for drawing both straight and curved lines, and when an operator is performing line drawing work, the powder container is stabilized to accurately discharge powder and draw accurate lines. The present invention also relates to a bicycle-type line drawing device that does not require the operator to remove the powder container from the vehicle body when the operator stops line drawing work and moves to a different work site. [Background technology]

[0002] 2. Description of the Related Art When outdoor playgrounds are used for physical education classes and the like in school education, line marking devices are used to draw lines on the ground using powder such as lime.

[0003] A known conventional line drawing device includes a powder container with a discharge port formed at the bottom, a rotatable axle provided at the bottom of the powder container, a pair of wheels attached to both ends of the axle, and an impeller provided inside the powder container and integrated with the axle to send the powder to the discharge port. The impeller rotates as the axle rotates, and the powder is discharged from the discharge port of the powder container and scattered on the ground by the rotation, forming a line.

[0004] Line drawing devices also come in two-wheel types with a pair of wheels (wheels that rotate with the sending member) and four-wheel types with a pair of front wheels (wheels that rotate with the sending member) and a pair of rear wheels.

[0005] Generally, two-wheeled vehicles have the problem that it is difficult to draw accurate straight lines. Therefore, in order to draw accurate straight lines, it is necessary to use a guide line such as a tape measure or rope, stretch it straight in advance, and then draw a line along the guide line, which is labor-intensive. In addition, multiple people are needed to work on it, which is a heavy burden for teachers and staff at schools, for example. On the other hand, four-wheeled vehicles are suitable for drawing straight lines, but they have the characteristic that it is difficult to draw curved lines because all four wheels are fixed and usually move in the same direction.

[0006] To solve such problems, for example, Patent Document 1 discloses a four-wheel type line drawing device that has a pair of front wheels (wheels that rotate together with the feed member) attached to both ends of the axle and a pair of rear wheels.

[0007] In this four-wheel type line drawing device, when the line to be drawn is a straight line or a curve with a small curvature, both the front and rear wheels are fixed, whereas when drawing a curve such as a circumference or arc with a large curvature, the rear wheels are free or are omitted.

[0008] However, Patent Document 1 does not describe how the wheels of the line drawing device are adjusted depending on the line to be drawn, and does not disclose a line drawing device suitable for drawing both straight and curved lines with a single unit.

[0009] Furthermore, the line drawing device disclosed in Patent Document 1 requires the user to manually pull the line, which requires a lot of work.

[0010] In order to solve these problems, the applicant of the present application has invented a bicycle-type line drawing device that is suitable for drawing both straight and curved lines with a single unit, and can reduce the labor required for line drawing work (see Patent Documents 2 and 3).

[0011] The bicycle-type line drawing device disclosed in Patent Documents 2 and 3 has a powder container fixed to the front of the vehicle body, and the operator rides on the vehicle body and pedals to propel the vehicle, allowing the device to draw straight and curved lines.

[0012] However, in the bicycle-type line drawing devices disclosed in Patent Documents 2 and 3, a powder container is attached to the vehicle body, and while an operator rides on the vehicle body and pedals to move, powder is discharged from the powder container unless the powder outlet of the powder container is manually closed. Therefore, when an operator stops line drawing work and moves to a different work site, he or she must get off the vehicle and close the powder outlet of the powder container by hand or remove the powder container from the vehicle body, which causes a problem in convenience.

[0013] In order to solve these problems, the applicant has further invented a bicycle-type line drawing device that does not require an operator to get off the vehicle and manually close the powder discharge outlet of the powder container or remove the powder container from the vehicle body, even when the operator interrupts line drawing work and moves to a different work site (see Patent Document 4).

[0014] The bicycle-type line drawing device disclosed in Patent Document 4 includes a connecting member capable of connecting a powder container to a vehicle body, the connecting member having a first state and a second state, and when connected to the powder container, the wheels of the powder container are grounded in the first state and the wheels of the powder container are not grounded in the second state. With this configuration, when the connecting member is in the first state, powder can be discharged from the powder container to draw a line, and when the connecting member is in the second state, even if the powder container is still attached to the vehicle body, the worker can ride on the vehicle body and pedal to move around the work site without discharging powder. [Prior art documents] [Patent documents]

[0015] [Patent Document 1] JP 2017-158657 A [Patent Document 2] Patent No. 6793276 [Patent Document 3] Patent No. 6892546 [Patent Document 4] Patent No. 6918266 Summary of the Invention [Problem to be solved by the invention]

[0016] However, when the applicant of the present application prototyped the bicycle-type line drawing device disclosed in Patent Document 4, it was found that the structure in which the powder container is fixed to the vehicle body using the connecting member was not stable enough in the first state. Therefore, when drawing a line by discharging powder from the powder container while holding the connecting member in the first state, the powder container was not stable, and a problem occurred in that it was not possible to draw a line accurately on the ground.

[0017] The present invention has been made in consideration of the above circumstances, and aims to provide a bicycle-type line drawing device that, when the powder container is fixed to the vehicle body using a connecting member, realizes stability even when the wheels of the powder container are on the ground, and discharges powder to draw an accurate line. In addition, when the wheels of the powder container are not on the ground, an operator can ride on the vehicle body and pedal to move around the work site without discharging powder while keeping the powder container attached to the vehicle body. [Means for solving the problem]

[0018] The bicycle-type line drawing device according to the present invention is a powder container having a pair of first wheels fixed to both ends of a same axle through which a powder delivery member is inserted and around which the powder delivery member is provided; A vehicle main body having a second wheel provided at the front, a third wheel provided at the rear, and a rod member standing vertically on a rotating member that is rotatable left and right in front of the second wheel; a connecting member having a cylindrical connecting pipe and capable of connecting the powder container and the vehicle main body; When the powder container and the vehicle main body are connected by the connecting member by inserting the rod member through the connecting pipe, the vehicle has a first state in which the first wheels are grounded and a second state in which the first wheels are not grounded, the second wheels are a pair and can be steered by a steering mechanism that enables left and right steering, and the steering mechanism and the rotating member are connected. The steering mechanism is a trapezoidal link mechanism composed of a plurality of connecting rods, the rod member is attached to the tip side of the rotating member, and the rear end side of the rotating member is connected to the center of a rod corresponding to an upper base among the plurality of rods constituting the trapezoidal link mechanism. It is characterized by the fact that Effect of the Invention

[0019] According to the present invention, in the first state where the wheels of the powder container are on the ground, the powder container can be stabilized, and the powder can be discharged to accurately draw a line. Also, in the second state where the wheels of the powder container are not on the ground, a bicycle-type line drawing device can be provided in which an operator can ride on the vehicle body with the powder container attached to it and pedal to move between work locations while propelling the vehicle and without discharging powder. [Brief description of the drawings]

[0020] [Figure 1] 1 is a diagram showing a bicycle-type line drawing device according to an embodiment of the present invention; [Diagram 2] FIG. 1 is an explanatory diagram of a conventional line drawing device according to an embodiment of the present invention. [Diagram 3] 1 is a diagram showing a vehicle body of a bicycle-type line drawing device according to an embodiment of the present invention; [Figure 4] 1 is a photograph showing a front portion of a vehicle body of a bicycle-type line marker device according to an embodiment of the present invention. [Diagram 5] 4 is an explanatory diagram of a connecting member of the bicycle-type line drawing device according to the present embodiment. FIG. [Figure 6] 13 is an explanatory photograph of a connecting member of the bicycle-type line marking device according to this embodiment. [Figure 7] 1 is a photograph showing the state in which a connecting member is connected to the front of the vehicle body of a bicycle-type line marker device according to this embodiment. [Figure 8] 1A and 1B are diagrams illustrating a state in which the bicycle-type line drawing device according to the present embodiment is used. [Figure 9]FIG. 1 is a diagram for explaining a method of using the bicycle-type line marking device according to the present embodiment in a first state. [Figure 10] 1 is a photograph showing the use of the bicycle-type line marker device according to the present embodiment in a first state. [Figure 11] 13 is a photograph showing the bicycle-type line marker device according to the present embodiment being used in a second state. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] Figure 1 shows a bicycle-type line marking device 1 according to an embodiment of the present invention. The bicycle-type line marking device 1 is composed of a conventional line marking device 10, a bicycle body 20, and a connecting member 30 that connects the line marking device 10 and the bicycle body 20. The connecting member 30 is the part shown hatched in Figure 1.

[0022] Fig. 2 is an explanatory diagram of the line drawing device 10. Fig. 2(a), Fig. 2(b), Fig. 2(c), and Fig. 2(d) show a side view, a front view, a top view, and a bottom view of the line drawing device 10, respectively.

[0023] The line drawing device 10 has a powder container 101 and a pair of wheels 102. In addition, one axle 103 is inserted into the powder container 101, and both ends of the axle 103 are exposed from the side surfaces of the powder container 101. The pair of wheels 102 are fixed to both ends of the axle 103.

[0024] Inside powder container 101, impeller 104 is provided around axle 103 as a powder delivery member. Powder container 101 also has a powder outlet 105 on the bottom, which can be opened and closed by a sliding bar (not shown). Furthermore, handle bar holders 106 are provided on both side surfaces of the upper part of powder container 101, and handle bars 107 are attached to them.

[0025] The line drawing device 10 can draw a line by itself. For example, when an operator moves while pushing or pulling the handle bar 107, a pair of wheels 102 and an axle 103 of the line drawing device 10 rotate, and with this rotation, the impeller 104 rotates, sending powder to the powder discharge port 105, and powder such as lime is discharged from the powder discharge port 105. That is, as the line drawing device 10 moves, the powder is discharged and scattered on the ground, etc., and the traces left by the powder form a line.

[0026] Next, the vehicle body 20 will be described with reference to Figs. 3 and 4. Fig. 3 is a diagram showing the vehicle body 20 of a bicycle. Fig. 4 is a photograph showing the front part of the vehicle body 20. Figs. 3(a) and 3(b) are a side view and a top view, respectively, of the vehicle body 20. The vehicle body 20 is composed of a body frame 201, a pair of wheels 202, a chain 203, a crank 204, pedals 205, a saddle 206, a driving force transmission mechanism (not shown) for transmitting the driving force applied to the pedals 205 to the wheels 202, and a stopping mechanism (not shown) such as a brake. The pair of wheels 202 are attached to the rear of the vehicle body 20. The wheel 202 may be a single wheel (single wheel) instead of a pair of wheels (two wheels).

[0027] A front frame 207 is provided in front of the body frame 201. Furthermore, between the front frame 207 and a saddle frame 216 that supports the saddle, there are reinforcing frames 208a and 208b for reinforcing the structure of the body frame 201. A handle unit 210 is provided on the upper part of the front frame 207. A handle shaft 209 that serves as the rotation axis of the handle unit 210 is provided inside the front frame 207.

[0028] The front frame 207 is composed of a part 207a extending in the vertical direction and a part 207b extending in the axle direction. A handle shaft 209 which serves as the rotation axis of the handle section 210 is inserted into the inside of the part 207a. The handle shaft 209 is a tubular member which is connected to the handle section 210 and can be rotated by operating the handle section 210.

[0029] Part 207b is a frame located at the bottom of front frame 207 and extending in the axle direction. A steering mechanism 211 that enables a pair of wheels 213 to be steered left and right is attached to part 207b. As steering mechanism 211, for example, a trapezoidal link mechanism composed of multiple connecting rods may be adopted.

[0030] A rotating member 212 is provided below the center of the portion 207b, which is connected to the handle shaft 209 and rotates with left and right rotation caused by the handle operation. This rotating member 212 is structured to move with left and right rotation caused by the handle operation. A metal bar (rod member) 212a for attaching the connecting member 30 is installed so as to stand vertically at the tip side of the rotating member 212. In the bicycle-type line drawing device 1 according to this embodiment, two metal bars (rod members) 212a are provided, but the number is not limited to this. The material is also not limited to metal. The rear end side of the rotating member 212 is connected to the steering mechanism 211. For example, if a trapezoidal link mechanism is adopted, it is connected to the center of the rod corresponding to the upper base of the trapezoid. As a result, the left and right rotation caused by the handle operation is transmitted to the steering mechanism 211 via the handle shaft 209 and the rotating member 212.

[0031] Further, a state control lever 214 for controlling the state of the connecting member 30 is provided below the handle portion 210 of the portion 207a. A hook is provided at the tip of the state control lever 214. Further, a handle portion for an operator to operate the state control lever 214 is provided at the other end side.

[0032] A lock member 215 for locking the state control lever 214 may be attached to the front frame 207. The lock member 215 is substantially rectangular and has a slight offset on the side. A pole with a tapered tip may be provided at the very rear of the body frame 201.

[0033] Next, the connecting member 30 will be described. Figures 5 and 6 are diagrams and photographs for explaining the connecting member 30. Figures 5 and 6 show the connecting member 30 attached to the powder container 101. The connecting member 30 is the hatched portion in Figure 5. The connecting member 30 is a member that can be repeatedly and removably fixed to the powder container 101 so that the powder container 101 can be removed and used as a line drawing device.

[0034] 5(a), 5(b), and 5(c) are a side view, a front view, and a back view of the powder container 101 to which the connecting member 30 is attached. The connecting member 30 is composed of a gripping base 301, a gripping portion 302, a connecting pipe 303, and a lift plate 304.

[0035] The gripper base 301 is a part of the connecting member 30 that is fixed to the vehicle-side surface and the corners of the side surface of the powder container 101, and serves as the base of the gripper 302. In this embodiment, the connecting member 30 has two gripper bases 301. The two gripper bases 301 are attached to two locations, left and right, on the underside of the powder container 101, as shown in Figures 5 and 6. There are no limitations on the attachment method, and any method may be used as long as the gripper bases 301 are fixed to the powder container 101.

[0036] The gripping portion 302 is, for example, a square-shaped member composed of multiple frames. The square-shaped member may be a U-shaped member to which a flat plate is attached with screws or the like. The gripping portion 302 is disposed so as to surround the periphery of the powder container 101, and is attached to the gripping portion base 301. At this time, a certain distance is provided between the face (front) of the powder container 101 facing the vehicle body and the gripping portion 302. There is no limitation on the attachment method, and any method may be used as long as the gripping portion 302 is fixed to the gripping portion base 301.

[0037] The connecting pipe 303 is a cylindrical member that is disposed between the front surface of the powder container 101 and the gripping portion 302, and is fixed to the gripping portion 302. In this embodiment, a plurality of connecting pipes 303 may be attached, for example, two connecting pipes 303 may be provided as shown in Figs. 5 and 6. There is no limitation on the method for attaching the connecting pipe 303 to the gripping portion 302, and any method may be used as long as the connecting pipe 303 is fixed to the gripping portion 302.

[0038] The lift plate 304 is a plate member with a number of holes arranged in the longitudinal direction, and its lower portion is fixed to the gripping portion 302. There are no limitations on the method for attaching the lift plate 304 to the gripping portion 302, and any method may be used as long as the lift plate 304 can be fixed to the gripping portion 302.

[0039] The lift plate 304 is a member of the connecting member 30 that moves the connecting member 30 and the powder container 101 up and down in response to the operation of the state control lever 214. The hook at the tip of the state control lever 214 can be hooked into any of the holes provided in the lift plate 304.

[0040] Next, a method for connecting the connecting member 30 and the vehicle body 20 will be described. Fig. 7 is a photograph showing the state in which the connecting member 30 is connected to the front of the vehicle body 20. To connect the connecting member 30 to the vehicle body 20, the metal bar (rod member) 212a of the vehicle body 20 is inserted into the connecting pipe 303, and the hook at the tip of the state control lever 214 is hooked into any of the holes provided in the lift plate 304. This allows the connecting member 30 to be connected to the vehicle body 20.

[0041] Next, a method of using the bicycle-shaped line marking device 1 according to this embodiment will be described with reference to Figures 8 and 9. Before using the bicycle-shaped line marking device 1, first fill the powder container 101 with powder such as lime, and then, in the same way as a normal bicycle, pedal 205 to move the bicycle forward, thereby drawing lines such as white lines.

[0042] Fig. 8 is a diagram showing two usage states of the bicycle-type line drawing device 1 according to this embodiment. Specifically, Fig. 8(a) shows a first state in which the wheels 102 of the powder container 101 are in contact with the ground, and Fig. 8(b) shows a second state in which the wheels 102 of the powder container 101 are not in contact with the ground.

[0043] The state of the bicycle-type line drawing device 1 is changed using the state control lever 214. When an operator lifts the handle of the state control lever 214 and lowers the lift plate 304 hooked to the hook at the tip, the device can be shifted to the first state in which the wheels 102 of the powder container 101 attached to the connecting member 30 are in contact with the ground. This state is the state in which the operator actually uses the bicycle-type line drawing device 1 to perform line drawing work.

[0044] Next, the operator pushes down the handle portion of the state control lever 214 and lifts the lift plate 304 hooked to the hook at the tip, thereby transitioning to the second state in which the wheels 102 of the powder container 101 attached to the connecting member 30 do not touch the ground. This state is a state in which the operator can get on the vehicle body and pedal to move the vehicle to a different work location without discharging powder. At this time, the handle portion of the state control lever 214 can be raised by hooking the state control lever 214 onto the offset portion of the lock member 215, thereby locking the state control lever 214 so that it does not transition to the first state.

[0045] As described above, in FIG. 8(a), the bicycle-type line drawing device 1 is in the first state. In the first state, when the connecting member 30 is connected to the powder container 101, the wheel 102 of the powder container 101 is in contact with the ground. That is, in this state, the wheel 102, the wheel 213, and the wheel 202 of the bicycle-type line drawing device 1 are all in contact with the ground. In the bicycle-type line drawing device 1 according to the present embodiment, the powder container 101 and the vehicle body 20 are connected by inserting the rod member 212a, which stands vertically on the rotating member 212 that can rotate left and right at the front of the vehicle body 20, into the connecting tube 303 of the connecting member 30. Since the rod member 212a is inserted into the connecting tube 303, even if the powder container 101 swings, it is supported by the rod member 212a and the swinging is suppressed. This makes it possible to suppress the swinging of the powder container 101 and stabilize it when the operator performs the line drawing work.

[0046] 9A and 9B are diagrams for explaining how to use the bicycle-shaped line drawing device 1 in the first state. Fig. 9(a) shows the state when drawing a straight line using the bicycle-shaped line drawing device 1. The powder container 101 is fixed to the connecting member 30, and the center line CL of the powder container 101 coincides with the center line of the connecting member 30.

[0047] Before use, the handle portion 210 connected to the connecting member 30 via the handle shaft 209 is adjusted so that the center lines of the powder container 101 and the vehicle body 20 coincide with a straight line CL. When a user sits on the saddle in this state, the center line of the user's body also coincides with CL, and the center lines of the powder container 101, the vehicle body 20, and the user all coincide with CL.

[0048] A user pedals the bicycle-type line drawing device 1 in a straight line, and can draw a straight line by discharging powder from the powder discharge port 105 of the powder container 101.

[0049] On the other hand, Figure 9(b) shows the state when drawing a curved line using the bicycle type line drawing device 1. As in Figure 9(a), the powder container 101 is fixed to the connecting member 30, and the center line CL of the powder container 101 coincides with the center line of the connecting member 30.

[0050] In addition, the handle portion 210 connected to the connecting member 30 via the handle shaft 209 is adjusted so that the center line CL of the powder container 101 forms a predetermined angle α with the center line CL' of the vehicle body 20. This makes it possible to set an angle between the traveling direction of the wheels 102 and the traveling direction of the wheels 202, making it possible to draw a curve.

[0051] As described above, the bicycle-type line drawing device 1 according to the present embodiment can draw both straight and curved lines with a single device. In addition, since the operator can ride the device by pedaling while sitting on the saddle, the labor required for line drawing can be reduced.

[0052] In addition, since the rod member 212a is provided at the tip of the rotating member 212 that rotates with left and right rotation by steering, the connecting portion between the powder container 101 and the vehicle body 20 can be smoothly rotated left and right in response to steering operation. Therefore, the powder container 101 can be stabilized even when drawing a curved line. As a result, even in the first state in which the wheels 102 of the powder container 101 are in contact with the ground, the powder container can be stabilized, and the powder can be discharged to draw an accurate line. In addition, the rear end side of the rotating member 212 is connected to the center of the rod that corresponds to the upper base of the trapezoid of the steering mechanism 211, which is a trapezoidal link mechanism. As a result, the left and right rotation by steering operation is transmitted to the steering mechanism 211 via the steering shaft 209 and the rotating member 212. Therefore, the left and right steering of the wheels 213 and the wheels 102 of the powder container 101 are linked, so that even in the first state where the wheels 102 of the powder container 101 are in contact with the ground, the powder container can be further stabilized, and the powder can be discharged to draw an accurate line.

[0053] Next, a method of use when an operator stops the line drawing work and moves to a different work location will be described. FIG. 8(b) is a diagram showing the connecting member 30 in the second state. In the second state, when the connecting member 30 is connected to the powder container 101, the wheels 102 of the powder container 101 are not on the ground. That is, in this state, the wheels 102 of the bicycle-type line drawing device 1 are not on the ground, but the wheels 213 and 202 are on the ground. Therefore, the operator can run the bicycle-type line drawing device 1 using the wheels 213 and 202, but even if the bicycle-type line drawing device 1 is run, the wheels 102 are not on the ground, so powder is not discharged from the powder container 101. That is, the operator can move to a different work location without discharging powder even if the operator rides on the vehicle body with the powder container attached to it and pedals the vehicle body to move the vehicle by itself without discharging powder.

[0054] The above is a description of how to use the bicycle type line marking device 1 according to the present embodiment.

[0055] In the bicycle-type line drawing device 1 according to the present embodiment, the powder container 101 and the vehicle body 20 are connected by inserting the rod member 212a standing on the rotating member 212 that can rotate left and right in front of the vehicle body 20 into the connecting pipe 303 of the connecting member 30. This makes it possible to suppress the powder container 101 from swinging and stabilize it when the operator performs the line drawing work. In addition, since the rod member 212a is provided on the rotating member 212 that rotates with the left and right rotation caused by the handlebar operation, the connecting portion between the powder container 101 and the vehicle body 20 can be smoothly rotated left and right in response to the handlebar operation. Therefore, the powder container 10 can be stabilized even when drawing a curved line.

[0056] FIG. 10 shows the bicycle-type line drawing device 1 of this embodiment in a first state in which the wheels 102 of the powder container 101 are in contact with the ground, stabilizing the powder container 101, discharging powder, and drawing an accurate line.

[0057] In addition, when the wheels 102 of the powder container 101 are in the second state where they are not in contact with the ground, a bicycle-type line drawing device can be provided in which an operator can ride the vehicle body with the powder container 101 attached to the vehicle body 20 and pedal to move the device around the work site without discharging powder. Also, in the second state as shown in Fig. 11, the handle of a ground brush can be attached to the tip of the rearmost pole of the vehicle frame 201 and the device can be self-propelled to easily brush the ground. [Explanation of symbols]

[0058] 1. Bicycle-type line drawing device 10 Line drawing device 101 Powder container 102 wheels 103 Axle 104 Impeller 105 Powder outlet 106 Handlebar holder 107 Handlebar 20 Vehicle body 201 Body frame 202 Wheels 203 Chain 204 Crank 205 Pedal 206 Saddle 207 Front Frame 207a, 207b Front frame parts 208a, 208b Reinforcement frame 209 Handle shaft 210 Handle 211 Steering mechanism 212 Rotating member 212a Metal rod (rod member) 213 Wheels 214 Status control lever 215 Locking member 216 Saddle Frame 30 Connecting members 301 Grip base 302 Gripping part 303 Connecting pipe 304 Lift Plate

Claims

1. a powder container having a pair of first wheels fixed to both ends of a same axle through which a powder delivery member is inserted and around which the powder delivery member is provided; a vehicle body having a second wheel provided at the front, a third wheel provided at the rear, and a rod member standing vertically on a rotating member that is rotatable left and right in front of the second wheel; a connecting member having a cylindrical connecting pipe and capable of connecting the powder container and the vehicle main body; When the powder container and the vehicle main body are connected by the connecting member by inserting the rod member through the connecting pipe, the vehicle has a first state in which the first wheel is grounded and a second state in which the first wheel is not grounded, The second wheels are a pair, and can be steered by a steering mechanism that can steer left and right, and the steering mechanism and the rotating member are connected to each other. the steering mechanism is a trapezoidal link mechanism composed of a plurality of connecting rods, The rod member is attached to the tip side of the rotating member, and the rear end side of the rotating member is connected to the center of a rod corresponding to an upper base of a plurality of rods constituting the trapezoidal link mechanism. A bicycle-type line drawing device.

2. The vehicle body has a tubular member rotatably attached to a front portion, 2. The bicycle-type line marking device according to claim 1, wherein the tubular member can be rotated to provide an angle between the traveling directions of the first wheel and the third wheel.

3. The vehicle body portion has a tubular member rotatably attached at a front portion, 2. The bicycle type line drawing device according to claim 1, wherein the rod member can be rotated in conjunction with the rotation of the tubular member.

4. A bicycle-type line drawing device according to any one of claims 1 to 3, The connecting member includes a lift plate having a plurality of holes aligned in a longitudinal direction; A state operation lever is provided on the vehicle body, The state can be transitioned to the first state by hooking a hook provided at the tip of the state control lever into any hole in the lift plate, lifting a handle portion of the state control lever, and lowering the lift plate hooked onto the tip hook, and A bicycle-type line drawing device characterized in that the device can be transitioned to the second state by pushing down the handle portion of the state control lever and lifting the lift plate hooked onto the hook at the tip.

5. In the bicycle-type line drawing device according to claim 4, A bicycle-type line drawing device characterized in that a locking member for locking the state control lever is provided on the vehicle main body, and the state control lever can be locked so as not to transition from the second state to the first state by hooking it onto an offset portion provided on the locking member.

Images