WO2023171188A1

WO2023171188A1 - Cowl attachment instrument

Info

Publication number: WO2023171188A1
Application number: PCT/JP2023/003439
Authority: WO
Inventors: 大洋緒方
Original assignee: 緒方理惠
Priority date: 2022-03-06
Filing date: 2023-02-02
Publication date: 2023-09-14
Also published as: JP7149435B1; JP2023129755A

Abstract

Provided is a cowl attachment instrument with which it is easy to attach/detach a front cowl that covers the front of a vehicle body to a frame of a commercially available bicycle (or electrically assisted bicycle, electric bicycle, or tricycle). This cowl attachment instrument comprises: a base 1 that is fixed to a head tube; a base attachment adjustment means 9 interposed between the base 1 and a top tube 6; a base fixing means 4 for fastening the base 1 to a head tube 2 of a bicycle 16; a protrusion 8 for attaching a front cowl 3 to the base 1; a front-rear adjustment means 11 for adjusting the position of the front cowl 3; a rotation stop 5 that sandwiches the top tube 6 from both sides to constrain the attachment direction of the base 1; and a rotation-stop fixing means 12 for fastening the rotation stop 5 and the top tube 6.

Description

cowl attachment equipment

The present invention provides a method for attaching a front cowl (also referred to as a front fairing) that covers the front of a bicycle (or a power-assisted bicycle, an electric bicycle, or a tricycle) to the body of a bicycle (or a power-assisted bicycle, an electric bicycle, or a tricycle). The present invention relates to a cowl attachment device.

Motorcycles used for competition use a front cowl attached to the front of the vehicle to reduce the resistance caused by the airflow when running, which increases as the speed increases. By installing the front cowl of a bicycle (or electrically assisted bicycle, electric bicycle, or tricycle) at the front of the bicycle body, air resistance is reduced when traveling at high speeds, making it easier to travel. However, a front cowl and attachment device that can be easily attached to a commercially available bicycle (or electrically assisted bicycle, electric bicycle, or tricycle) has not been provided.

Although front cowls for attaching handlebars to motorcycles are commercially available, attachment to bicycles (or electrically assisted bicycles, electric bicycles, or tricycles) is not considered, so it is necessary to make the mounting brackets yourself, and the manufacturing and Installation is not easy.

Prior Patent Document 1 describes a method of fixing and attaching a windshield to the handle of a bicycle (or a power-assisted bicycle, an electric bicycle, or a tricycle) using metal fittings.

Patent Document 2 discloses a cowl attachment fitting for a motorcycle that is attached to a main body frame. This mounting bracket consists of a fixing member that fixes the cowl support member to the head pipe of the motorcycle with two U-bolts, and a slide-type cowl height adjustment means that allows stepless adjustment of the height position of the front cowl on the fixing member. A cowl support member having a hinge structure is installed as a means for adjusting the installation angle of the cowl, and the longitudinal position of the front cowl relative to the motorcycle can be adjusted by means of a stepless adjustable cowl front and back structure using a slideable nesting structure. Equipped with adjustment means.

Public use No. 53-74854 Utility model No. 3231177

Front cowls and mounting brackets for motorcycles have not been designed to be installed on bicycles (or power-assisted bicycles, electric bicycles, or tricycles), and it has been difficult to install them because the functions of the vehicle bodies are different.

External forces caused by crosswinds and vibrations while driving act on the front cowl's mounting equipment, and if a force greater than the frictional force is applied to the screw fasteners of the equipment, the mounting position and direction of the front cowl may change. Therefore, it is desirable to prevent this as much as possible.

The frames of bicycles (or electrically assisted bicycles, electric bicycles, and tricycles) are made of thin-walled aluminum alloys or carbon fiber-reinforced plastics to reduce weight. Tightening force is limited, and the strength of the frame may be affected if the frame is scratched by equipment attachment.

Depending on the direction and strength of the wind, the front cowl can be delicately adjusted by one person, and in strong winds or when transporting a bicycle (or electrically assisted bicycle, electric bicycle, or tricycle), the front cowl can be easily removed and used again. It is desirable to have a structure with simple components and few fastening points, which can be installed in a short time without adjusting the mounting position and angle.

If the front cowl is attached to the steering wheel with metal fittings, when the front cowl is exposed to strong winds, the external force acts directly on the steering wheel, which may make steering operation unstable.

The present invention reduces air resistance in bicycles (including electrically assisted bicycles, electric bicycles, and three-wheeled bicycles) by installing a front cowl in front of the bicycle body to reduce air resistance when riding in a headwind or at high speed. The front cowl can be easily attached to the frame of a commercially available bicycle (or electrically assisted bicycle, electric bicycle, or tricycle) so that the bicycle (or electrically assisted bicycle, electric bicycle, or tricycle) can be easily ridden. This invention was based on the knowledge that a suitable device was needed.

To achieve the above object, the present invention attaches a pedestal of a front cowl attachment device to a head tube of a bicycle (or a power-assisted bicycle, an electric bicycle, or a three-wheeled bicycle), and fastens the pedestal with a pedestal fixing means. The pedestal has a protrusion for attaching the front cowl, a fastening means for connecting the protrusion and the front cowl, and a top tube or down tube (including the top tube and down tube) from both sides, which allows the direction of the cowl attachment device to be adjusted. Equipped with a rotation stopper that restrains the bicycle (or electrically assisted bicycle, electric bicycle, tricycle) in the direction of travel, it can be easily attached and detached, and even if external forces or vibrations are applied to the front cowl due to crosswinds. This prevents changes in the mounting angle of the front cowl in the left and right directions with respect to the direction of travel, and since external forces do not directly act on the handlebar, the effect on maneuverability can be reduced.

If the aforementioned front cowl attachment device is to be more firmly fixed, the rotation stoppers on both sides and the top tube or down tube (including the top tube and down tube) are fastened using a rotation stopper fixing means. The rotation stoppers on both sides are provided with through holes through which the rotation stopper fixing means can pass, to prevent the positional relationship between the rotation stopper fixing means and the rotation stopper from changing due to external forces such as vibrations.

The protruding part of the base to which the front cowl is attached has, for example, a polygonal prism shape, thereby preventing the front cowl from rotating about the protruding part about the axis due to external force and changing the mounting angle. A plurality of through holes are provided at the base of the protrusion of the polygonal column, and the pedestal fixing means is fixed to the pedestal and the bicycle head tube through the through holes, so that the positional relationship between the pedestal and the pedestal fixing means is prevented by external force. This prevents changes in By selecting multiple through holes, you can adjust the mounting position of the pedestal to the top or bottom of the head tube.

In order to attach the pedestal of the cowl attachment device closely to the pipe-shaped head tube of a bicycle (or electrically assisted bicycle, electric bicycle, or tricycle), the mounting side of the pedestal should have a semi-cylindrical or V-shaped shape, for example. However, since the outer diameter and shape of the head tube of each bicycle (or electrically assisted bicycle, electric bicycle, or tricycle) may differ slightly, there should be a suitable space between the pedestal and the head tube, such as elastic It is attached via a pedestal attachment adjustment means for shape and thickness, and fastened with a pedestal fixing means. By using elastic pedestal attachment adjustment means with shapes and thickness dimensions suitable for each type, one type of pedestal can be attached to a variety of commercially available bicycles (or electrically assisted bicycles, electric bicycles, and tricycles). .

The top tube or down tube (including the top tube and down tube) of a bicycle (or electrically assisted bicycle, electric bicycle, or tricycle) differs in external shape and dimensions, so the direction of the cowl attachment device may differ depending on the direction of the bicycle (or electrically assisted bicycle). , electric bicycles, tricycles) between the rotation stopper that restrains the direction of travel and the top tube (or down tube), there are left and right attachments that match the shape of the top tube or down tube (and including the top tube and down tube). By inserting the adjustment means, the rotation stopper and the top tube or down tube (and the top tube and the down tube) can be fixed in close contact with each other.

The cowl attachment device includes a longitudinal adjustment means interposed between, for example, a polygonal prism protrusion and a polygonal fitting hole of the front cowl, in order to adjust the longitudinal position of the front cowl with respect to the traveling direction. The longitudinal adjustment means has an inner shape that matches the protrusion, and an outer shape that matches the polygonal fitting hole of the front cowl. The forward and backward position of the cowl in the direction of movement can be adjusted as desired.

The means for fastening the front cowl and the protrusion of the base include a plurality of bolt holes passing through the outer circumference of a polygonal fitting hole in the front cowl in the vertical direction, and a plurality of bolt holes passing through the outer circumference of the protrusion of a polygonal prism in the vertical direction. and a plurality of bolt holes that pass through the outer periphery of the longitudinal adjustment means in the vertical direction, and are fastened with a plurality of bolt members and nut members using the bolt holes. You can also do that. One of the multiple bolt holes that pass through the outer periphery of the polygonal fitting hole of the front cowl in the vertical direction, and the multiple bolt holes that pass through the outer periphery of the polygonal prism protrusion in the vertical direction. For example, it can be made into an elongated hole so that it can be fastened without having to do so. For example, a plurality of bolt holes that pass through only the upper part of the outer periphery of a polygonal fitting hole in the front cowl, a plurality of bolt holes that pass through only the upper part of the outer periphery of the front and rear adjusting means, and a plurality of bolt holes that pass through only the upper part of the outer periphery of the front cowl, and It is also possible to construct a plurality of screw holes penetrating only the upper part and fasten with a plurality of bolt members.

The rotation stopper of the front cowl attachment device is separated from the pedestal part and made into a separate piece, and the pedestal side has a shaft that serves as a fulcrum, and the rotation stopper has a hole for attaching the shaft, making the rotation stop movable and attaching it to the head tube. Even for bicycles (or electrically assisted bicycles, electric bicycles, or tricycles) where the joining angle of the top tube or down tube (including the top tube and down tube) is significantly different, the installation angle of the rotation stopper can be adjusted to prevent the protrusion. can be attached and fixed to the top tube or the down tube (and including the top tube and the down tube).

The rotation stopper and the protrusion are fastened together by a rotation stopper fixing means, a slip stopper is provided between the rotation stopper and the protrusion, and the rotation stopper has a hole through which the rotation stopper fixing means for fastening to the protrusion passes; This prevents the fixed position of the rotation stopper and protrusion from changing due to external forces such as vibrations during operation.

The shaft to which the rotation stopper is attached is equipped with a stop to prevent the rotation stop from falling off, a split groove on the shaft to facilitate attachment and detachment, slopes on both sides of the stop, and fillets in the hole of the rotation stop. The rotation stopper is easy to attach and remove, and prevents the rotation stopper from falling off the pedestal during disassembly.

As a means to fine-tune the left-right angle of the front cowl, it is possible to adjust the left-right mounting between the rotation stopper and both sides of the top tube or down tube (and including the top tube and down tube), where the left and right sides have different thickness dimensions, for example. By inserting the means, it is possible to adjust the angle of the front cowl in the left and right direction with respect to the direction of movement.

As a means of adjusting the vertical angle of the front cowl, for example, by inserting a pedestal attachment adjustment means with different thickness dimensions at the top and bottom between the pedestal of the front cowl attachment device mentioned above and the head tube, the advancement of the front cowl can be adjusted. The vertical angle with respect to the direction can be adjusted.

A front cowl that is attached to a cowl attachment device includes a front cowl main body and a fitting hole formed at the rear of the front cowl and extending in the front-rear direction, and the fitting hole is formed to match the outer peripheral shape of the protrusion. Therefore, the cowl attachment device can be easily attached to and detached from the protrusion, and its position is unlikely to change even when external force is applied.

By using the cowl attachment device according to the present invention, the front cowl can be easily attached and detached from commercially available bicycles (including electrically assisted bicycles, electric bicycles, and tricycles) in a short period of time without the need to manufacture special jigs. The mounting position can be adjusted.

Exploded view of the cowl attachment device according to the first embodiment of the present invention A perspective view showing an example of a bicycle with a front cowl attached. Detailed view from above showing how the cowl attachment equipment is installed Detailed sectional view of the attachment part of the cowl attachment device seen from the side A perspective view showing an example of a front cowl Exploded view of a cowl attachment device according to a second embodiment of the present invention Exploded view showing details of the pedestal axis and rotation stop Detailed cross-sectional view of the pedestal shaft and rotation stopper mounting hole Detailed view of the pedestal, shaft, and rotation stopper seen from above Exploded view of a cowl attachment device according to a third embodiment of the present invention

Embodiments of the cowl attachment device according to the present invention will be described below with reference to the accompanying drawings. The cowl attachment device of the present invention allows the front cowl 3 that covers the front of the bicycle 16 to be easily attached/detached and adjusted in a short time to a commercially available bicycle 16 (including electrically assisted bicycles, electric bicycles, and tricycles). This is what I did. FIG. 1 is an exploded view clearly showing the structure of the cowl attachment device of the first embodiment. FIG. 2 is an overall perspective view simply showing an example in which the mounting cowl device of the first embodiment and the front cowl 3 are attached to a bicycle 16 (or a power-assisted bicycle, an electric bicycle, or a tricycle). It is. FIG. 3 is a view from above showing how the cowl attachment device of the first embodiment is attached. FIG. 4 is a side view showing a cross section and details of the attachment state of the cowl attachment device of the first embodiment. FIG. 5 is a perspective view illustrating the front cowl 3 adapted to the cowl attachment device. FIG. 6 is an exploded view clearly showing the structure of the cowl attachment device of the second embodiment. FIG. 7 is an exploded view showing details of the cowl attachment device and the attachment portion of the rotation stops 5A and 5B of the second embodiment. FIG. 8 is a sectional view showing details of the shaft 32 of the pedestal 1A and the holes 31 of the rotation stops 5A and 5B of the cowl attachment device of the second embodiment before and after they are attached and detached. FIG. 9 is a view from above in which rotation stops 5A and 5B are attached to the shaft 32 of the base 1A of the cowl attachment device of the second embodiment. FIG. 10 is an exploded view of the cowl attachment device of the third embodiment.

[Bicycle (or electric assist bicycle, electric bicycle, tricycle)]
Before explaining the cowl attachment device, a perspective view of the bicycle 16 in FIG. 2 will be explained. The bicycle 16 in FIG. 2 mainly includes a head tube 2 at the front of the frame of the vehicle body, a top tube 6 interposed between and connected between the upper part of the head tube 2 and the upper part of the seat tube 17, and the lower part of the head tube 2. and a down tube 7 interposed between and coupled to the lower part of the seat tube 17; a seat tube 17 arranged at the lower part of the saddle and having its upper part coupled to the top tube 6 and its lower part coupled to the down tube; A chainstay 20 is arranged to support an axle provided from the joint of the seat tube 17 to the center of the rear wheel 19, and a chain stay 20 is arranged to support the axle provided from the upper joint of the seat tube 17 to the center of the rear wheel. The seat stay 21 is arranged for the purpose of operation, the handle 22 is arranged above the head tube, the fork 23 is arranged below the head tube, the front wheel has its axle connected to the tip of the fork, and the axle is connected to the chainstay. It consists of a rear wheel fastened to the joint at the tip of the seatstay. The vehicle frame is made of thin-walled, lightweight aluminum alloy pipes, high-strength alloy steel pipes, titanium alloy pipes, and carbon fiber-reinforced plastic. In Figures 1, 2, and 4, in order to facilitate the explanation of the cowl attachment equipment, the bicycle handle is simplified and the brake device, transmission, crank, chain, drive unit of the electric assist bicycle and electric bicycle, etc. are omitted. It is shown in the form.

[Front cowl]
The front cowl 3 shown in FIG. 5 will be explained. The present front cowl 3 has a cylindrical or polygonal fitting hole 28 with a shape and size matching the protrusion 8 extending in the front-rear direction, and a cylindrical or polygonal fitting hole 28 to be coupled to the cylindrical or polygonal protrusion 8. If the protrusion 8 has a slope 44, the fitting hole 28 also has the same slope, and a plurality of bolts passing through the top and bottom of the cylindrical or polygonal fitting hole 28 serve as fastening means for attaching to the protrusion 8. A hole 27 is provided. When a plurality of screw holes 13A (FIG. 10) are formed in the upper part of the protruding part 8, the plurality of bolt holes 27A (FIG. 10) penetrate only the upper part of the fitting hole 28 and have the form of an elongated hole. It is also possible to fasten only with a plurality of bolt members 14A (FIG. 10). The fitting hole 28 in FIG. 5 has, for example, a rectangular fitting hole shape, a slope 44 that matches the protrusion 8, and a plurality of bolt holes 27 passing through the fitting hole 28 above and below. This is a diagram drawn. Any material can be used for the front cowl 3 as long as it is lightweight and has the necessary strength, and ABS resin, fiber-reinforced plastic, etc. are generally used. Figure 5 shows a transparent windshield 29 made of polycarbonate or the like to ensure the driver's forward visibility, and a polygonal fitting hole 28 in the front cowl 3 to prevent deformation or damage due to external forces caused by wind pressure or vibration. A rib 30 is provided. In Fig. 5, the transparent windshield 29 is fastened to the front cowl 3 with, for example, eight machine screws, but if the front cowl is made of a transparent material, the windshield 29 and the front cowl 3 may be manufactured as one piece. can.

[Cowl attachment device according to the first embodiment of the present invention]
The explanation will be given below according to FIGS. 1, 2, and 3. The cowl attachment device according to the first embodiment of the present invention mainly includes a pedestal 1 that is attached to a head tube 2 of a bicycle 16 (or a power-assisted bicycle, an electric bicycle, or a tricycle), and a pedestal 1 that is installed between the pedestal 1 and the head tube 2. a pedestal attachment adjustment means 9 for fastening the pedestal 1 to the head tube 2; a pedestal fixing means 4 for fastening the pedestal 1 to the head tube 2; a rotation stopper 5 that pinches and restrains the rotation stopper 5 from both sides; a left-right attachment adjustment means 10 that is interposed between the rotation stopper 5 and the top tube 6 or the down tube 7 (or both); (including the top tube 6 and down tube 7), a protrusion 8 for attaching the front cowl to the front of the base 1, and a longitudinal adjustment means interposed between the protrusion 8 and the front cowl 3. 11, and fastening means for coupling the protrusion 8 and the front cowl 3. The means for fastening the protrusion 8 and the front cowl 3 include, for example, a bolt hole 13 in the protrusion 8, a bolt hole 27 in the front cowl 3, a bolt member 14, and a nut member 15, for example.

[Pedestal 1]
The explanation will be given below according to FIG. The base 1 is integrated with a rotation stopper 5 that is attached to sandwich the top tube 2 or the down tube (including the top tube 6 and the down tube 7), and a protrusion 8 that is attached to the front cowl 3. The part of the pedestal 1 attached to the head tube 2 may have a semi-cylindrical or V-shaped shape having an inner diameter larger than the outer diameter of the head tube 2, for example, but it can be made to match various shapes of the head tube 2. Therefore, it is attached to the head tube 2 via the pedestal attachment adjustment means 9 and fastened using the pedestal fixing means 4. Any material can be used for the base 1 as long as it is lightweight and has the necessary strength, and nylon resin, fiber-reinforced plastic, aluminum alloy, etc. are generally used.

[Rotation stopper 5]
The rotation stopper 5 is integrated with the pedestal 1 and the protrusion 8, and is attached by sandwiching the top tube 6 (or down tube 7 (and including the top tube 6 and down tube 7). 1 and the protruding part 8 integrated with the pedestal 1, and the front cowl 3 attached to the protruding part 8 can be easily attached in the direction of travel of a bicycle (or electrically assisted bicycle, electric bicycle, tricycle). The shape of the top tube 6 or down tube 7 (including the top tube 6 and down tube 7) of bicycles (including assist bicycles and electric bicycles) may have an oval or triangular cross-sectional shape, or may have a cylindrical shape. Since the outer diameter dimensions may differ, the mounting surface of the rotation stopper 5 with the top tube 6 or down tube 7 (and including the top tube 6 and the down tube 7) has a flat shape, and the rotation stopper 5 on both sides has a flat shape. The gap between the rotation stopper 5 and the top tube 6 or the down tube 7 (and the top tube 6 or the down tube 7) is made wider than the external dimensions (for example, 45 to 65 mm). (including the top tube 6 and down tube 7), a left and right attachment adjustment means 10 having an appropriate thickness and shape is inserted and used.

[Protrusion 8]
The protruding part 8 has a cylindrical or polygonal column (3 to 9 sided prism) shape, an appropriate slope in which the tip of the cylindrical or polygonal column is tapered, and construction on the protruding part as a means of fastening the protruding part 8 and the front cowl 3. A plurality of bolt holes 13 are provided, and one or more (2 to 5) through holes 36 penetrate through the base of the protrusion 8. The protrusions in FIGS. 1, 2, and 4 are drawn in the form of polygonal prisms. When the protrusion 8 has a polygonal prism shape, it is possible to easily prevent the front cowl from changing its position in the rotational direction about the protrusion 8 due to external force. When the front cowl is attached to the protrusion, the front cowl can be firmly fixed by eliminating the gap between the attachment part and the protrusion by providing the cylinder or polygon with an appropriate slope in which the tip is tapered. When the polygonal pillar of the protrusion is an even number (4, 6, 8, etc.) prism, the bolt holes 13 that pass through can be constructed in a plane both at the top and bottom, which is preferable as a form.

[Means for fastening the protrusion 8 and the front cowl 3]
The means for fastening the protrusion 8 and the front cowl 3 include a plurality of bolt holes 27 passing through the top and bottom of the fitting hole 28 of the front cowl 3, and a plurality of bolt holes 13 passing through the top and bottom of the protrusion 8. The bolt hole 13 and the bolt hole 27 are used for fastening with a plurality of bolt members 14 and a plurality of nut members 15. If the protruding part 8 in the form of a cylinder or polygonal prism has a slope, it is difficult to accurately match the positions of the bolt holes 13 of the protruding part 8 and the bolt holes 27 of the front cowl 3. By making one of the bolt holes 27 into an elongated hole, the bolt member 14 can easily pass through the bolt hole 13 and the bolt hole 27 and be fastened with the nut member 15. The bolt hole 27 of the fitting hole 28 of the front cowl 3 may pass through only the upper part, and the screw hole 13A may be formed in the protrusion 8, and the bolt hole 27 may be directly fastened with the bolt member 14A. Washers interposed between the

bolt members

13, 13A and the nut member 15 and the front cowl 3 may also be used. The bolt member 14 and the nut member 15 are generally made of carbon steel plated on the outer periphery, stainless steel, or aluminum alloy.

[Pedestal attachment adjustment means 9]
The pedestal attachment adjustment means 9 is used by cutting an elastic sheet-like material into a size that matches the cylindrical inner diameter of the pedestal 1, and attaching it above and below between the pedestal 1 and the head tube. The inner diameter of the cylindrical part of the pedestal 1 where it is fastened to the head tube 2 is made larger than the outer diameter of the head tube 2. By attaching it, the pedestal 1 and the head tube 2 can be connected without any gap. Since the outer diameter and shape of the head tube 2 of commercially available bicycles 16 (or electrically assisted bicycles, electric bicycles, tricycles) are not the same, by using the pedestal attachment adjustment means 9 with different thicknesses, many commercially available bicycles can be used. It becomes possible to attach the same pedestal 1 to. The material of the pedestal attachment adjustment means 9 is preferably a material with elasticity and a large coefficient of friction, and therefore synthetic rubber is generally employed. The pedestal attachment adjustment means 9 can be attached to the inside of the semi-cylindrical form of the pedestal 1 with adhesive or double-sided tape to prevent it from falling off.

[How to adjust the vertical angle of front cowl 3]
When adjusting the mounting angle of the front cowl 3 in the vertical direction with respect to the traveling direction, by changing the thickness dimensions of the pedestal attachment adjustment means (for upper) 9a and the pedestal attachment adjustment means (for lower) 9b in Fig. 4. Since the vertical attachment angle 45 of the pedestal 1 with respect to the head tube 2 can be changed, the vertical attachment angle with respect to the traveling direction of the protrusion 8 provided on the pedestal 1 and the front cowl 3 coupled to the protrusion 8 can be changed. can be adjusted.

[Pedestal fixing means 4
The pedestal fixing means 4 is fastened through the through hole 36 penetrating the base of the protrusion 8 and between the top tube 6 and down tube 7 at the part where the top tube 6 and down tube 7 are joined to the head tube 2. . The through hole 36 penetrating the base of the protruding portion 8 can be provided in one place or in a plurality (2 to 5), and if it is provided with a plurality of through holes 36, the pedestal 1 can be inserted into the head tube. The upper through hole 36 or the lower through hole 36 is selected depending on whether it is installed on the upper or lower side. A belt or wire that can be tightened can be used as the pedestal fixing means 4, but it can be tightened with moderate force without damaging the frame of the bicycle (or electrically assisted bicycle, electric bicycle, tricycle), and can be tightened to prevent loosening. It is desirable to have the following. FIG. 1 shows a binding band made of nylon resin as an example.

[Rotation stopper fixing means 12]
When firmly fixing the rotation stopper 5 to the top tube 6 or the down tube 7 (and including the top tube 6 and the down tube 7), the rotation stopper 5 is fastened using the rotation stopper fixing means 12. The rotation stopper 5 has a through hole 25 through which the rotation stopper fixing means 12 is passed, and the rotation stopper fixing means 12 uses the through hole 25 of the rotation stopper 5 to attach the top tube 6 or the down tube 7 (and the top tube 6 and the down tube 7) and the rotation stopper 5. By using the through hole 25 in the fixing means 25, it is possible to prevent the positional relationship between the rotation stopper 5 and the fixing means 25 from changing due to external force. When external forces such as crosswinds and vibrations are small, the top tube 6 or down tube 7 (including the top tube 6 and down tube 7) can be fastened by the rotation stop 5 without using the rotation stop fixing means 12. It can also be used only for restraint by clamping and attaching. Although a belt or wire that can be tightened can be used as the rotation-stopping fixing means 12, it is possible to tighten it with an appropriate amount of force without damaging the frame of the bicycle 16 (or electrically assisted bicycle, electric bicycle, or tricycle). Preferably one with a locking mechanism. FIG. 1 shows a binding band made of nylon resin as an example.

[Left and right mounting adjustment means 10]
The left and right attachment adjustment means 10 is used by cutting an elastic material into a suitable size and inserting it into the gap between the rotation stopper 5 and the top tube 6 or down tube 7 (and including the top tube 6 and the down tube 7). Even if the shape of the top tube 6 or down tube 7 (and including the top tube 6 and down tube 7) has an elliptical or triangular cross-sectional shape, or a cylindrical shape with various external dimensions, the gap size and shape may vary. By using a suitable left-right attachment adjusting means 10, the rotation stopper 5 can be in contact with the top tube 6 or the down tube 7 (and including the top tube 6 and the down tube 7) without any gaps via the left-right attachment adjusting means 10. Therefore, it is possible to prevent changes in the mounting angle in the left-right direction due to the influence of external forces on the front cowl 3 and the cowl attachment device. The material of the left and right mounting adjustment means 10 is generally synthetic rubber, and by using a material with elasticity and a large coefficient of friction, the rotation stopper 5 and the top tube 6 or the down tube 7 (and the top tube 6 and the down tube Even if the outer diameter dimensions and shapes of the parts (including 7) are slightly different, they can be attached closely together. The left and right attachment adjusting means 10 can be prevented from falling off by being attached to the inside of the rotation stopper 5 with adhesive or double-sided tape.

When the left and right attachment adjusting means 10 is not used, the width dimension and shape between the left and right rotation stops are the same as the outer diameter dimension and shape of the top tube 6 or down tube 7 (and including the top tube 6 and down tube 7). Alternatively, the rotation stopper 5 and the top tube 6 or the down tube 7 (including the top tube 6 and the down tube 7) may be directly fastened together using the rotation stop fixing means 12. When external forces such as cross winds and vibrations are small, the rotation stopper 5 is not used to fasten the top tube 6 or down tube 7 (and includes the top tube 6 and down tube 7). It can also be used only by restraining the attachment part. If the rotation stopper 5 is made of nylon resin with excellent toughness, the width between the left and right rotation stops should be set to the outside of the top tube 6 or down tube 7 (and including the top tube 6 and down tube 7). The rotation stopper 5 can be tightened by making the rotation stopper 5 slightly narrower than the diameter dimension, expanding the width of the rotation stopper 5 by hand, and assembling it to the top tube 6 or the down tube 7 (and including the top tube 6 and the down tube 7). It can also be used by restraining only by force.

[How to adjust the left/right angle of the front cowl]
When finely adjusting the left-right mounting angle 46 (Fig. 3) of the front cowl 3 with respect to the traveling direction of the bicycle 16 (or electrically assisted bicycle, electric bicycle, or tricycle), use the rotation stopper 5 and the top tube 6 or down tube 7 ( The left and right mounting adjustment means 10, which have different thickness dimensions and an appropriate slope, are inserted between the left and right sides (including the top tube 6 and the down tube 7), and the left and right mounting angle 46 (see FIG. ) can be adjusted.

[Fore/aft adjustment means 11]
The longitudinal adjustment means 11 is interposed between the front cowl 3 and the protrusion 8 and is used to adjust the front cowl 3 to an arbitrary position in the longitudinal direction with respect to the traveling direction. The longitudinal adjustment means 11 includes an external form with a shape and dimensions that match the fitting hole 28 of the front cowl at a specific position, and an internal form with a shape and dimensions that match the protrusion 8 at a specific position. Since the front cowl 3 is in close contact with the gap between the fitting hole 28 and the protrusion 8 of the front cowl 3 at a specific position, the front cowl 3 can be adjusted to a specific longitudinal position with respect to the traveling direction. The material for the front-rear adjustment means 11 is, for example, nylon resin or fluororesin, but is not limited thereto, and other materials such as stainless steel, aluminum thin plates, metal tapes, and paper/vinyl tapes can also be used. The longitudinal adjustment means 11 can also be used by being adhered to the outside of the protrusion 8 with adhesive or adhesive tape to prevent it from falling off.

[Cowl attachment device according to second embodiment of the present invention]
FIG. 6 is a diagram for explaining a cowl attachment device according to a second embodiment of the present invention, an attachment part of a bicycle 16 (or a power-assisted bicycle, an electric bicycle, or a tricycle) to which a front cowl is attached, and a front cowl. It is an exploded view of the entire configuration. FIG. 7 is a detailed diagram for explaining the details of the shaft 32 of the pedestal 1A, and the rotation stop (right) 5B and rotation stop (left) 5A connected to the shaft 32. FIG. 8A is a detailed enlarged view for explaining when the shaft 32 of the pedestal 1A is fitted into the hole 31 of the rotation stopper (right) 5B and rotation stopper (left) 5A. FIG. 8(b) is a detailed enlarged view of the hole 31 and the shaft 32 for explaining when the rotation stopper (right) 5B and the rotation stopper (left) 5A are removed from the shaft 32 of the pedestal 1A. FIG. 9 is an explanatory perspective view after the rotation stopper (right) 5B and rotation stopper (left) 5A are attached to the shaft 32 of the pedestal 1A.

A description will be given below according to FIGS. 6 to 9. The second embodiment includes a pedestal 1A in which the rotation stopper 5 of the first embodiment is divided from the pedestal 1 and made into a separate piece, a rotation stopper (left) 5A as a separate piece, and a rotation stopper (right side) as a separate piece. ) 5B, a fixing member 33 for fastening the rotation stop (right) 5B and rotation stop (left) 5A to the protrusion 8, and the rotation stop (left) 5A, rotation stop (right) 5B, and the protrusion 8. It is comprised of a non-slip 35 interposed therebetween, a shaft 32 provided on the instrument 1A, and holes 31 in the rotation stop (left) 5A and rotation stop (right) 5B that are inserted into the shaft 32. The rest is the same as the cowl attachment device of the first embodiment, so the explanation will be omitted.

[Pedestal 1A]
The pedestal 1A will be explained below according to FIG. The pedestal 1A of the second embodiment includes a shaft 32 into which a rotation stopper (left) 5A and a rotation stopper (right) 5B, which are separate pieces, are fitted, a seat 41 interposed between the pedestal 1A and the shaft 32, It is used by fitting the holes 31 of the rotation stopper (left) 5A and the rotation stopper (right) 5B into the shaft 32. In commercially available bicycles 16 (or electrically assisted bicycles, electric bicycles, tricycles), the angle 37B at which the connection between the head tube 2 and the top tube 6 intersects is different for each bicycle 16, but the angle 37B at which the connection between the head tube 2 and the top tube 6 intersects is different for each bicycle 16. Since the (right) 5B can rotate around the shaft 32, the rotation stop (left) 5A and the rotation stop (right) 5B can be attached to the top tube 6 to match the angle 37B. Any material can be used for the instrument 1A as long as it is lightweight and has the necessary strength, and nylon resin, fiber-reinforced plastic, aluminum alloy, etc. are generally used.

[Description of shaft 32 of pedestal 1A]
The shaft 32 of the pedestal 1A will be explained below according to FIGS. 7, 8(a), and 8(b). The shaft 32 of the pedestal 1A has a retainer 38 that prevents the rotation stopper (left) 5A and the rotation stopper (right) 5B from falling off the shaft 32 during installation, and the shaft 32, the rotation stopper (left) 5A, and the rotation stopper 38. A split groove 39 that facilitates the attachment and detachment of the stop (right) 5B, and a chamfer 40 constructed on both sides of the retainer 38 that also facilitates the attachment and detachment of the rotation stop (left) 5A and rotation stop (right) 5B and the shaft 32. and a seat 41 that prevents interference between the rotation stopper (left) 5A and the rotation stopper (right) 5B and the corners of the pedestal 1A during installation.

[Explanation of the function of the retainer 38]
The function of the retainer 38 will be described below with reference to FIGS. 8(a) and 8(b). The outer diameter of the shaft 32 in FIGS. 8(a) and 8(b) is, for example, 9 mm, and the outer diameter of the retainer installed at the end of the shaft 32 is, for example, 10 mm. The width of the elongated hole 31 of the stop (left) 5A and the rotation stop (right) 5B is, for example, 9.5 mm, and the shaft 32 has, for example, a 30 degree chamfer 40, a split groove 39 of, for example, a width of 2 mm, and, for example, the elongated hole 31. By providing a 1 mm fret 42 on the shaft 32, the split groove 39 is slightly deformed during attachment and detachment, and due to the fillet 42 at the corner of the hole and the slope of the stopper 38, the shaft 32 and the rotation stopper (left) 5A and Rotation stopper (right) 5B can be easily attached and detached.

[Rotation stopper (right) 5B, rotation stopper (left) 5A]
The rotation stop (right) 5B and rotation stop (left) 5A will be explained below according to FIGS. 6 to 8(a) and FIG. 8(b). The rotation stopper (right) 5B and rotation stopper (left) 5A are separate pieces separated from the pedestal 1A, and the rotation stopper (right) 5B and rotation stopper (left) 5A are fitted into the shaft 32 of the pedestal 1A. It includes a long hole 31 and a hole 34 through which a band 33 for fastening the rotation stopper (right) 5B and the rotation stopper (left) 5A to the protrusion 8 is passed. The contact surface 43 that connects with the protrusion 8 of the rotation stop (right) 5B and rotation stop (left) 5A has the same slope as the polygonal prism protrusion 8, and the rotation stop (right) 5B and rotation stop (left) 5A. and a non-slip member 35 which is interposed between the protruding portion 8 and has a large elasticity and coefficient of friction, and prevents the mounting position from changing due to external forces such as vibrations during operation. As for the material of rotation stopper (right) 5B and rotation stopper (left) 5A, any material can be used as long as it is lightweight and has the necessary strength, and nylon resin, fiber-reinforced plastic, aluminum alloy, etc. are generally used. . The anti-slip 35 is generally made of synthetic rubber with a thickness of 1 mm, and is used by adhering it to the contact surface 43 of the rotation stop (right) 5B and rotation stop (left) 5A with adhesive or double-sided tape to prevent the non-slip 35 from falling off. is prevented.

[Explanation of the functions of rotation stopper (right) 5B and rotation stopper (left) 5A]
The angle 37A at which the connection portion of the head tube 2 and top tube 6 of the bicycle 16 in FIG. The intersection angle 37B of the connecting portions is, for example, 110 degrees, which is a large difference. For this reason, the rotation stopper 5 integrated with the base 1, which is manufactured to conform to the angle 37A in Fig. 1, does not conform to the angle 37B of the bicycle (or electrically assisted bicycle, electric bicycle, tricycle) in Fig. 6, so the rotation stopper 5 is 5 cannot be attached to the side of the top tube 6 shown in FIG. However, the rotation stopper (left) 5A and the rotation stopper (right) 5B, which are separate pieces of the pedestal 1A of the second embodiment shown in FIG. Since it is a hole, it can slide up and down, so it can be installed at the optimal position for both the angle 37A and top tube 6 of the bicycle 16 in Figure 1 and the angle 37B and top tube 6 of the bicycle in Figure 6. be able to.

[Embodiment of third form]
FIG. 6 is an exploded view of the overall configuration of a cowl attachment device and a front cowl 3 according to a third embodiment of the present invention.

As shown in FIG. 6, the third embodiment includes a pedestal 1A fixed to the top tube 6 of a bicycle (or an electrically assisted bicycle, an electric bicycle, or a tricycle), and a polygonal prism formed integrally with the pedestal 1A. It comprises a protrusion 8A, a front cowl 3A having a hole that matches the protrusion 8A, and means for fastening the front cowl 3A and the polygonal prism protrusion 8A of the base 1A. The longitudinal adjustment means 11 interposed between the front cowl 3 and the protrusion 8, which was used in the first and second embodiments, is not used in the third embodiment. The rest is the same as the cowl attachment device of the first and second embodiments, so the explanation will be omitted.

[Description of installing pedestal 1A and front cowl 3A]
The pedestal 1A will be explained below according to FIG. Similar to the first and second embodiments, the cowl attachment base 1A of the third embodiment is integrated with the polygonal prism protrusion 8A to which the front cowl 3A is attached. Unlike the second embodiment, this embodiment includes a polygonal prism protrusion 8A having no slope, and a plurality of screw holes 13A as means for fastening to the front cowl. The front cowl 3A includes a fitting hole 28A having the same shape and size as the polygonal prism protrusion 8A of the base 1A, and a plurality of elongated holes 27A as means for fastening to the polygonal prism protrusion 8A. Since the protrusion 8A of the polygonal column of the pedestal 1A and the fitting hole 28A of the front cowl 3A have the same dimensions with no slope, the front cowl can be moved in the front and back direction with respect to the traveling direction without using the front and rear adjustment means 11. Can be adjusted to any position. The upper surface of the polygonal column protrusion 8A of the pedestal 1A is provided with a large number of screw holes 13A (M6 x 18 holes in FIG. 6), so that it can be fastened at any position. Although there are two fastening bolt members 14A in FIG. 6, due to manufacturing tolerances, there is a small gap at the joint between the protrusion 8A and the fitting hole 28A of the front cowl 3A, so there is a slight gap due to wind pressure or the road surface while driving. If the external force is large, the number of bolt members 14A can be added to increase the fastening force. Any material can be used for the base 1A as long as it is lightweight and has the necessary strength, and nylon resin, fiber-reinforced plastic, aluminum alloy, etc. are generally used.

The plurality of screw holes 13A of the protrusion 8A, which are the means for fastening the pedestal 1A and the front cowl 3A, the plurality of elongated holes 27A of the front cowl, and the plurality of bolt members 14A are the same as those of the first and second embodiments. It can also be adopted in the form.

The polygonal prism protrusion without the slope 44 of the pedestal 1A can also be employed in the pedestal 1 of the first embodiment.

In addition to the front cowl 3, a cage or a bag having holes that match the projections can be attached to the

projections

8 and 8A of the

pedestals

1 and 1A.

1...Plinth, 1B...Pedestal, 2...Head tube, 3...Front cowl, 4...Fixing means for pedestal, 5...Rotation stop, 5A...Rotation stop (left), 5B...Rotation stop (Right), 6...Top tube, 7...Down tube, 8...Protrusion, 8A...Protrusion, 9...Pedestal attachment adjustment means (9a...Upper side, 9b...Lower side), 10...・Left and right mounting adjustment means, 11.. Front and rear adjustment means, 12.. Fixing means for rotation stop, 13.. Hole, 13A.. Screw hole, 14.. Bolt member, 14A.. Bolt member, 15.. Nut member. , 16... Bicycle, 17... Saddle, 19... Rear wheel, 20... Chain stay, 21... Seat stay, 22... Handle, 23... Hawk, 24... Front wheel, 25... Through hole, 26...Through hole, 27...Bolt hole, 27A...Elongated hole, 28...Fitting hole, 28A...Fitting hole, 29...Windshield, 30...Rib, 31...Hole, 32... Shaft, 33...Fixing member, 34...Through hole, 35...Fixing means, 36...Through hole, 37A...Angle, 37B...Angle, 38...Retainer, 39...Split groove, 40...・Chamfer, 41. Seat, 42. Fillet, 43. Mounting surface, 44. Slope, 45. Vertical mounting angle, 46. Horizontal mounting angle.

Claims

A cowl attachment device for attaching a front cowl that covers the front of the bicycle, electric assist bicycle, electric bicycle, or tricycle to the bicycle, electric assist bicycle, electric bicycle, or tricycle,
a pedestal for fixing the cowl attachment device to the head tube of a bicycle, electrically assisted bicycle, electric bicycle, or tricycle;
A pedestal fixing means for fastening the pedestal to a head tube of a bicycle, electric assist bicycle, electric bicycle, or tricycle;
a protrusion for attaching the front cowl to the pedestal;
fastening means for coupling the protrusion and the front cowl;
A cowl attachment device characterized by comprising a rotation stopper that holds the top tube or down tube from both sides and restrains the mounting direction of the pedestal in the direction of movement of a bicycle, electrically assisted bicycle, electric bicycle, or tricycle.
The cowl attachment device according to claim 1,
a rotation stopper fixing means for further fastening the rotation stopper to a top tube or a down tube;
A cowl attachment device further comprising: a through hole for passing a rotation stopper fixing means formed on the rotation stopper.
The cowl attachment device according to claim 1,
The protrusion is formed in the shape of a polygonal prism,
Furthermore, a hole is provided at the base of the protrusion for passing the pedestal fixing means formed on the pedestal to be fastened to the head tube of a bicycle, electrically assisted bicycle, electric bicycle, or tricycle. Cowl attachment equipment.
The cowl attachment device according to claim 1,
A cowl attachment device comprising: a pedestal attachment adjustment means interposed between the pedestal of the cowl attachment device and a head tube of a bicycle, a power-assisted bicycle, an electric bicycle, or a three-wheeled bicycle.
The cowl attachment device according to claim 1,
A cowl attachment device comprising: a left-right attachment adjusting means interposed between the rotation stopper and a top tube or down tube of a bicycle, a power-assisted bicycle, an electric bicycle, or a tricycle.
The cowl attachment device according to claim 1,
The protruding portion of the cowl attachment device is provided with a slope that appropriately tapers the tip,
A longitudinal adjustment means interposed between the front cowl and the protruding part and for adjusting the mounting position of the front cowl in the front and back direction in the direction of travel of the bicycle, electric assist bicycle, electric bicycle, or tricycle. A cowl attachment device featuring:
The cowl attachment device according to claim 1,
A cowl attachment device comprising a right rotation stop and a left rotation stop that are separate pieces from the base of the cowl attachment device.
The cowl attachment device according to claim 7,
a fixing member for fastening the right rotation stop and the left rotation stop to the protrusion;
a through hole formed in the right rotation stop and the left rotation stop for passing the fixing member;
Furthermore, a non-slip that is interposed between the right rotation stop, the left rotation stop and the protrusion and prevents the connection position of the right rotation stop, left rotation stop and the protrusion from changing due to external force; A cowl attachment device characterized by comprising:
The cowl attachment device according to claim 7,
a shaft formed on a pedestal for fitting the right rotation stop and the left rotation stop into the pedestal of the cowl attachment device;
A cowl attachment device comprising holes formed in the right rotation stop and the left rotation stop for fitting the right rotation stop and the left rotation stop into shafts formed on the base. .
The cowl attachment device according to claim 9,
In order to prevent the right rotation stop and the left rotation stop from falling off the shaft formed on the base of the cowl attachment device, a stopper is installed at the end of the shaft;
a split groove constructed at the end of the shaft to facilitate attachment and detachment of the shaft formed on the right rotation stop and the left rotation stop and the pedestal;
In order to easily attach and detach the shaft formed on the right rotation stop and the left rotation stop and the pedestal, a chamfer is formed on both sides of the shaft stopper;
In order to easily attach and detach the shafts formed on the right rotation stop, the left rotation stop, and the pedestal, fillets are provided at the ends of the holes formed in the right rotation stop and the left rotation stop. A cowl attachment device characterized by:
A front cowl to be attached to the cowl attachment device according to claim 1, comprising a front cowl main body and a fitting hole formed at the rear of the front cowl and extending in the front-rear direction, the fitting hole matching the outer peripheral shape of the protrusion. The front cowl is characterized by being shaped like this.