Bicycle-type line marking device

Abstract

When the powder container's wheels are in the first state, making contact with the ground, the container is unstable and cannot accurately draw a line on the ground. [Solution] The powder container and the vehicle body are connected by inserting a rod member, which is vertically upright, through the connecting pipe of the connecting part into a rotating member that can rotate left and right at the front of the vehicle body, thereby suppressing the shaking of the powder container when the worker performs line drawing work and stabilizing it.

Description

Technical Field

[0001] The present invention relates to a line drawing device for drawing white lines with lime or the like on a playground or the like. In particular, it is a device suitable for drawing both straight and curved lines with a single unit, and when an operator performs a line drawing operation, it can stabilize a powder container and accurately discharge the powder to draw an accurate line. Further, the present invention relates to a bicycle-type line drawing device in which it is not necessary to remove a powder container from a vehicle body when an operator interrupts a line drawing operation and moves the work location.

Background Art

[0002] When using an outdoor playground in physical education classes or the like in school education, a line drawing device is used to draw lines on the ground with powder such as lime.

[0003] As a conventional line drawing device, there is known one including a powder container having a discharge port formed at a lower portion, a rotatable axle provided at a lower portion of the powder container, a pair of wheels respectively 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. As the axle rotates, the impeller rotates, and the powder is discharged from the discharge port of the powder container and scattered on the ground by being guided by this rotation, thereby forming a line.

[0004] Also, line drawing devices include a two-wheel type having a pair of wheels (wheels that rotate together with a feeding member), and a four-wheel type having a pair of front wheels (wheels that rotate together with a feeding member) and a pair of rear wheels.

[0005] Generally, two-wheeled line drawing tools have the problem of being difficult to use to draw a perfectly straight line. Therefore, drawing a straight line requires ingenuity and effort, such as setting up a guide line beforehand using a measuring tape or rope and drawing the line along the guide line. Also, multiple people are required to perform the work, which places a heavy burden on school staff, for example. On the other hand, four-wheeled line drawing tools are suitable for drawing straight lines, but because all four wheels are usually fixed in the same direction of travel, they have the characteristic of being difficult to use to draw curves.

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

[0007] In this four-wheeled line-drawing device, it is stated that when the line to be drawn is a straight line or a curve with a small curvature, both the front and rear wheels should be fixed, while when drawing curves such as a circle or arc with a large curvature, the rear wheels should be made free wheels or omitted.

[0008] 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 does not disclose a line-drawing device that is 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 necessitates considerable effort.

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

[0011] The bicycle-type line marking device disclosed in Patent Documents 2 to 3 has a powder container fixed to the front of the vehicle body, and the operator can draw straight and curved lines by riding on the vehicle body and pedaling to propel it.

[0012] However, in the bicycle-type line marking devices disclosed in Patent Documents 2 and 3, a powder container is attached to the vehicle body, and while the operator is riding the vehicle and pedaling, powder will be discharged from the powder container unless the powder discharge port of the powder container is manually closed. Therefore, if the operator interrupts line marking work and moves to a different work location, they must get off the vehicle and either manually close the powder discharge port of the powder container or remove the powder container from the vehicle body, which presents a problem in terms of convenience.

[0013] To solve these problems, the applicant has further invented a bicycle-type line marking device that eliminates the need for the worker to get off the vehicle and manually close the powder discharge port of the powder container or remove the powder container from the vehicle, even when the worker interrupts line marking work and moves to a different work location (see Patent Document 4).

[0014] The bicycle-type line marking device disclosed in Patent Document 4 comprises a connecting member capable of connecting a powder container and a vehicle body, wherein the connecting member has a first state and a second state, and when connected to the powder container, the wheels of the powder container are in contact with the ground in the first state, and the wheels of the powder container are not in contact with the ground 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 remains attached to the vehicle body, the worker can ride on the vehicle body and pedal to move the vehicle without discharging any powder and move to the work area. [Prior art documents] [Patent Documents]

[0015] [Patent Document 1] Japanese Patent Publication No. 2017-158657 [Patent Document 2] Patent No. 6793276 [Patent Document 3] Patent No. 6892546 [Patent Document 4] Patent No. 6918266 [Overview of the project] [Problems that the invention aims to solve]

[0016] However, when the applicant prototyped the bicycle-type line-drawing device disclosed in Patent Document 4, it was found that the stability in the first state was insufficient in the structure in which the powder container is fixed to the vehicle body using a connecting member. As a result, when the connecting member is held in the first state and powder is discharged from the powder container to draw a line, the powder container is unstable, and a problem arises in that it is not possible to draw an accurate line on the ground.

[0017] This invention was 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, achieves stability even when the wheels of the powder container are in contact with the ground, and enables accurate line drawing by discharging powder. Furthermore, when the wheels of the powder container are not in contact with the ground, the invention aims to provide a bicycle-type line-drawing device that allows the operator to move the vehicle by pedaling while the powder container remains attached to the vehicle body, without discharging powder. [Means for solving the problem]

[0018] The bicycle-type line marking device according to the present invention is A powder container having a pair of first wheels fixed to both ends of the same axle, through which a powder dispensing member is inserted and around which a powder dispensing member is provided, A vehicle body having a second wheel located at the front, a third wheel located at the rear, and a rod member that stands vertically to a rotating member that can rotate left and right in front of the second wheel, It has a cylindrical connecting pipe and a connecting member that can connect the powder container and the vehicle body, When the powder container and the vehicle body are connected by the connecting member by inserting the rod member into the connecting pipe, it is characterized by having a first state in which the first wheel touches the ground and a second state in which the first wheel does not touch the ground.

Advantages of the Invention

[0019] According to the present invention, in the first state where the wheels of the powder container are in contact with the ground, it is possible to stabilize the powder container and discharge the powder to draw an accurate line. Also, in the second state where the wheels of the powder container are not in contact with the ground, it is possible to provide a bicycle-type line drawing device that allows an operator to ride on the vehicle body, pedal, move to the work location while the vehicle is moving on its own without discharging the powder, with the powder container still attached to the vehicle body.

Brief Description of the Drawings

[0020] [Figure 1] It is a diagram showing a bicycle-type line drawing device according to the present embodiment. [Figure 2] It is an explanatory diagram of a conventional line drawing device in the present embodiment. [Figure 3] It is a diagram showing the vehicle body of a bicycle-type line drawing device according to the present embodiment. [Figure 4] It is a photograph showing the front part of the vehicle body of a bicycle-type line drawing device according to the present embodiment. [Figure 5] It is an explanatory diagram of a connecting member of a bicycle-type line drawing device according to the present embodiment. [Figure 6] It is a photograph showing an explanatory view of a connecting member of a bicycle-type line drawing device according to the present embodiment. [Figure 7] It is a photograph showing a state where a connecting member is connected to the front of the vehicle body of a bicycle-type line drawing device according to the present embodiment. [Figure 8] It is a diagram showing the usage state of a bicycle-type line drawing device according to the present embodiment. [Figure 9] It is a diagram for explaining the usage method in the first state of a bicycle-type line drawing device according to the present embodiment [Figure 10]This is a photograph showing the bicycle-type line marking device according to this embodiment in use in its first state. [Figure 11] This is a photograph showing the bicycle-type line marking device according to this embodiment in use in a second state. [Modes for carrying out the invention]

[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 consists of a conventional line marking device 10, a bicycle vehicle body 20, and a connecting member 30 that connects the line marking device 10 and the vehicle body 20. The connecting member 30 is the part shown in hatching in Figure 1.

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

[0023] The line marking device 10 has a powder container 101 and a pair of wheels 102. A single axle 103 is inserted into the inside of the powder container 101, with both ends exposed from the sides of the powder container 101, and each of the pair of wheels 102 is fixed to both ends of the axle 103.

[0024] Furthermore, inside the powder container 101, an impeller 104 is provided around the axle 103 as a powder dispensing member. A powder discharge port 105, which can be opened and closed by a sliding bar (not shown), is provided on the bottom surface of the powder container 101. In addition, handlebar holders 106 are provided on both sides of the top of the powder container 101, and a handlebar 107 is attached to them.

[0025] The line marking device 10 can draw lines on its own. For example, when an operator moves the device by pushing or pulling the handlebar 107, the pair of wheels 102 and axle 103 of the line marking device 10 rotate, and as it rotates, 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. In other words, as the line marking device 10 moves, powder is discharged and scattered on the ground, etc., and a line is formed by the traces left by the powder.

[0026] Next, the vehicle body 20 will be explained using Figures 3 and 4. Figure 3 is a diagram showing the vehicle body 20 of a bicycle. Figure 4 is a photograph showing the front part of the vehicle body 20. Figures 3(a) and 3(b) show a side view and a top view of the vehicle body 20, respectively. The vehicle body 20 consists of a vehicle frame 201, a pair of wheels 202, a chain 203, a crank 204, pedals 205, a saddle 206, a power transmission mechanism (not shown) for transmitting the driving force applied to the pedals 205 to the wheels 202, and a stopping mechanism such as brakes (not shown). The pair of wheels 202 are mounted at the rear of the vehicle body 20. Alternatively, the wheel 202 may be a single wheel instead of a pair of wheels (two wheels).

[0027] A front frame 207 is located in front of the frame 201. Between the front frame 207 and the saddle frame 216 that supports the saddle, there are reinforcing frames 208a and 208b to reinforce the structure of the frame 201. The top of the front frame 207 is equipped with a handle section 210. Inside the front frame 207 is a handle shaft 209 which serves as the axis of rotation for the handle section 210.

[0028] The front frame 207 consists of a vertically extending portion 207a and a axially extending portion 207b. A handle shaft 209, which serves as the rotation axis of the handle portion 210, is inserted into the interior of portion 207a. The handle shaft 209 is a tubular member that is connected to the handle portion 210 and can be rotated by the operation of the handle portion 210.

[0029] Section 207b is located below the front frame 207 and is a frame that extends in the axle direction. A steering mechanism 211 that allows a pair of wheels 213 to be steered left and right is attached to section 207b. The steering mechanism 211 may be, for example, a trapezoidal link mechanism composed of multiple connecting rods.

[0030] Below the central part of section 207b, a rotating member 212 is provided, which is connected to the handle shaft 209 and rotates in conjunction with the left and right rotation caused by the handle operation. This rotating member 212 is structured to move in conjunction with the left and right rotation caused by the handle operation. A metal rod (rod member) 212a for attaching the connecting member 30 is installed vertically at the tip of the rotating member 212. In the bicycle-type line-drawing device 1 according to this embodiment, two metal rods (rod members) 212a are provided, but the number is not limited to this. The material is also not limited to metal. The rear end of the rotating member 212 is connected to the steering mechanism 211. For example, if a trapezoidal link mechanism is used, 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] Furthermore, a state control lever 214 for operating the state of the connecting member 30 is provided on the lower side of the handle portion 210 of section 207a. A hook is provided at the tip of the state control lever 214. A handle portion for operation by the worker is provided at the other end of the state control lever 214.

[0032] A locking member 215 for locking the operating lever 214 may also be attached to the front frame 207. The locking member 215 is roughly rectangular in shape with a slight offset on its side. A pole with a tapered tip may also be provided at the rear of the vehicle frame 201.

[0033] Next, the connecting member 30 will be described. Figures 5 and 6 are diagrams and photographs illustrating the connecting member 30. Figures 5 and 6 show the state in which the connecting member 30 is attached to the powder container 101. The connecting member 30 is the part indicated by hatching in Figure 5. The connecting member 30 is a member that can be repeatedly fixed to the powder container 101 in a removable manner so that the powder container 101 can be removed and used as a line marking device.

[0034] Figures 5(a), 5(b), and 5(c) show a side view, front view, and rear view of the powder container 101 with the connecting member 30 attached. The connecting member 30 consists of a gripping base 301, a gripping part 302, a connecting pipe 303, and a lift plate 304.

[0035] The gripping base portion 301 is part of the connecting member 30 that is fixed to the vehicle-side surface and the corner of the side of the powder container 101, and serves as the base for the gripping portion 302. In this embodiment, the connecting member 30 has two gripping base portions 301. The two gripping base portions 301 are attached to two locations on the left and right sides of the lower part of the powder container 101, as shown in Figures 5 and 6. There are no limitations on the method of attachment; any method is acceptable as long as the gripping base portion 301 is fixed to the powder container 101.

[0036] The gripping section 302 is, for example, a square-shaped member composed of multiple frames. The square-shaped member may also be a U-shaped member with a flat plate attached with screws or the like. The gripping section 302 is arranged to surround the powder container 101 and is attached to the gripping section base 301. At that time, a certain distance is provided between the vehicle body side (front) of the powder container 101 and the gripping section 302. There are no limitations on the method of attachment; any method is acceptable as long as the gripping section 302 is fixed to the gripping section base 301.

[0037] The connecting pipe 303 is a cylindrical member positioned between the front of the powder container 101 and the gripping portion 302, and is fixed to the gripping portion 302. In this embodiment, multiple connecting pipes 303 may be attached; for example, as shown in Figures 5 and 6, two connecting pipes may be provided. There are no limitations on the method of attaching the connecting pipe 303 to the gripping portion 302; any method is acceptable as long as the connecting pipe 303 is fixed to the gripping portion 302.

[0038] The lift plate 304 is a plate member with multiple holes arranged along its longitudinal direction, and is fixed to the gripping portion 302 at its lower end. There are no limitations on the method of attaching the lift plate 304 to the gripping portion 302; any method is acceptable as long as the lift plate 304 is fixed to the gripping portion 302.

[0039] The lift plate 304 is a component of the connecting member 30 that raises and lowers the connecting member 30 and the powder container 101 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 one of the holes provided in the lift plate 304.

[0040] Next, we will explain how to connect the connecting member 30 to the vehicle body 20. Figure 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 rod (rod member) 212a of the vehicle body 20 is inserted into the connecting pipe 303, and the hook at the tip of the state operation lever 214 is hooked into one 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, the method of using the bicycle-type line marking device 1 according to this embodiment will be explained with reference to Figures 8 and 9. Before using the bicycle-type line marking device 1, first fill the powder container 101 with powder such as lime, and then, by pedaling the 205 in the same way as a regular bicycle, the bicycle can be moved forward to draw lines such as white lines.

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

[0043] The state of the bicycle-type line marking device 1 is switched using the state operation lever 214. By lifting the handle portion of the state operation lever 214 and lowering the lift plate 304 which is locked to the hook at the tip, the device can be switched to the first state in which the wheel 102 of the powder container 101 attached to the connecting member 30 touches the ground. This state is the state in which the operator can actually use the bicycle-type line marking device 1 to perform line marking work.

[0044] Next, the operator pushes down the handle portion of the state control lever 214 and lifts the lift plate 304 which is locked to the hook at the tip, thereby transitioning to a second state in which the wheels 102 of the powder container 101 attached to the connecting member 30 do not touch the ground. In this state, the operator can move to the work area without discharging powder even if they ride on the vehicle and pedal to propel it. At this time, the state control lever 214 can be locked by hooking it onto the offset portion of the locking member 215, preventing the handle portion of the state control lever 214 from rising and transitioning to the first state.

[0045] As mentioned above, Figure 8(a) shows the bicycle-type line marking device 1 in its first state. The first state is when the connecting member 30 is connected to the powder container 101 and the wheel 102 of the powder container 101 is in contact with the ground. That is, in this state, the bicycle-type line marking device 1 has all three wheels in contact with the ground: wheel 102, wheel 213, and wheel 202. In this embodiment, the bicycle-type line marking device 1 connects the powder container 101 to the vehicle body 20 by inserting a rod member 212a, which is vertically upright on a rotating member 212 that can rotate left and right in front of the vehicle body 20, through the connecting pipe 303 of the connecting member 30. Because the rod member 212a is inserted through the connecting pipe 303, even if the powder container 101 swings, it is supported by the rod member 212a and the swinging is suppressed. This suppresses the swinging of the powder container 101 when an operator performs line marking work, and stabilizes it.

[0046] Figure 9 is a diagram illustrating the usage method of the bicycle-type line marking device 1 in its first state. Figure 9(a) shows the state when drawing a straight line using the bicycle-type line marking 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 section 210, which is connected to the connecting member 30 via the handle shaft 209, is adjusted so that the centerlines of the powder container 101 and the vehicle body 20 coincide on a straight line CL. When a user sits on the saddle in this state, the centerline of the user's body also coincides with CL, and the centerline of the powder container 101, the centerline of the vehicle body 20, and the centerline of the user all coincide on CL.

[0048] The user can draw a straight line by pedaling the bicycle-type line-drawing device 1 to move it in a straight line and 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 a curve is drawn using the bicycle-type line drawing device 1. Similar to 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] Furthermore, the handle portion 210, which is 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 create an angle between the direction of travel of the wheels 102 and the direction of travel of the wheels 202, making it possible to draw curves.

[0051] As described above, the bicycle-type line marking device 1 according to this embodiment can draw both straight and curved lines with a single unit. Furthermore, since the operator can ride on the saddle and pedal to move the device, the labor required for line marking work can be reduced.

[0052] Furthermore, since the rod member 212a is located at the tip of the rotating member 212, which rotates in conjunction with the left and right rotation caused by the steering wheel operation, the connection between the powder container 101 and the vehicle body 20 can be smoothly rotated left and right in response to the steering wheel operation. Therefore, the powder container 101 can be stabilized even when drawing curves. This allows the powder container to be stabilized even in the first state where the wheels 102 of the powder container 101 are in contact with the ground, enabling accurate line drawing by discharging the powder. In addition, the rear end of the rotating member 212 is connected to the center of the rod, which 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 caused by the steering wheel operation is transmitted to the steering mechanism 211 via the steering shaft 209 and the rotating member 212. Therefore, the steering of the wheels 213 and the wheels 102 of the powder container 101 is linked, which further stabilizes the powder container even in the first state where the wheels 102 of the powder container 101 are in contact with the ground, allowing for accurate line discharge of the powder.

[0053] Next, we will explain how to use the system when an operator interrupts line marking work and moves to a different work location. Figure 8(b) shows the connecting member 30 in the second state. The second state is when the connecting member 30 is connected to the powder container 101, and the wheels 102 of the powder container 101 do not touch the ground. In other words, in this state, the wheels 213 and 202 of the bicycle-type line marking device 1 do not touch the ground, although the wheels 102 do. Therefore, the operator can move the bicycle-type line marking device 1 using the wheels 213 and 202, and even if the bicycle-type line marking device 1 is moved, the wheels 102 do not touch the ground, so no powder will be discharged from the powder container 101. In other words, the operator can move to a different work location without discharging any powder, even if they ride on the vehicle and pedal while the powder container is still attached to the vehicle.

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

[0055] In this embodiment, the bicycle-type line-drawing device 1 connects the powder container 101 to the vehicle body 20 by inserting a rod member 212a, which is erected on a rotating member 212 that can rotate left and right in front of the vehicle body 20, through the connecting pipe 303 of the connecting member 30. This suppresses and stabilizes the swinging of the powder container 101 when the operator performs line-drawing work. Furthermore, since the rod member 212a is provided on the rotating member 212 that rotates in conjunction with the left and right rotation caused by the handle operation, the connection between the powder container 101 and the vehicle body 20 can be smoothly rotated left and right in response to the handle operation. Therefore, the powder container 10 can be stabilized even when drawing curves.

[0056] Figure 10 shows how the bicycle-type line drawing device 1 according to this embodiment stabilizes the powder container 101 and discharges the powder in a first state where the wheel 102 of the powder container 101 is in contact with the ground, thereby drawing an accurate line.

[0057] Furthermore, when the wheels 102 of the powder container 101 are not in contact with the ground, a bicycle-type line marking device can be provided that allows the operator to move the work area without discharging powder, even if the operator rides on the vehicle body 20 and pedals to propel the vehicle while the powder container 101 remains attached to the vehicle body 20. Also, as shown in Figure 11, in the second state, the ground can be easily brushed by attaching the handle of the ground brush to the tip of the pole at the rear of the vehicle body frame 201 and propelling the vehicle. [Explanation of Symbols]

[0058] 1. Bicycle-type line marking device 10 Line drawing device 101 Powder container 102 wheels 103 axles 104 Impeller 105 Powder outlet 106 Handlebar Holder 107 Handlebars 20 Vehicle Body 201 Body frame 202 Wheels 203 Chain 204 Crank 205 pedals 206 Saddle 207 Front Frame 207a, 207b Front frame section 208a, 208b Reinforcement Frame 209 Handle shaft 210 Handle section 211 Steering mechanism 212 Rotating Member 212a Metal rod (rod member) 213 Wheels 214 Status Operation Lever 215 Locking member 216 Saddle Frame 30 Connecting member 301 Gripping part 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 the same axle, through which a powder dispensing member is inserted and around which a powder dispensing member is provided, A vehicle body having a second wheel located at the front, a third wheel located at the rear, and a rod member that stands vertically to a rotating member that can rotate left and right in front of the second wheel, It has a cylindrical connecting pipe and a connecting member that can connect the powder container and the vehicle body, When the powder container and the vehicle body are connected by the connecting member by inserting the rod member through the connecting pipe, there is a first state in which the first wheel touches the ground and a second state in which the first wheel does not touch the ground. Bicycle-type line marking device.

2. The bicycle-type line marking device according to claim 1, characterized in that the second wheels are a pair and can be steered by a steering mechanism that allows for left and right steering.

3. The bicycle-type line-drawing device according to claim 2, characterized in that the steering mechanism is a trapezoidal link mechanism composed of a plurality of connecting rods.

4. The vehicle body has a tubular member that is rotatably mounted at the front, The bicycle-type line marking device according to claims 1 to 3, wherein an angle can be provided between the direction of travel of the first wheel and the third wheel by rotating the tubular member.

5. The vehicle body has a tubular member that is rotatably mounted at the front, The bicycle-type line marking device according to claim 1 to 4, wherein the rod member can be rotated in conjunction with the rotation of the tubular member.

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