JP7149435B1 - cowl fitting - Google Patents

Abstract

To provide a cowl mounting device for easily attaching and detaching 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, tricycle). SOLUTION: In a cowl mounting device, a base 1 fixed to a head tube, a base 1, a base mounting adjusting means 9 interposed between a top tube 6, and a base 1 for fastening to a head tube 2 of a bicycle 16. , a protrusion 8 for attaching the front cowl 3 to the pedestal 1, a front-rear adjustment means 11 for adjusting the position of the front cowl 3, and the pedestal 1 attached with the top tube 6 sandwiched from both sides. A cowl attachment device comprising a rotation stopper 5 for restricting the direction and a rotation stopper fixing means 12 for fastening the rotation stopper 5 and the top tube 6. [Selection drawing] Fig. 1

Description

The present invention is for attaching a front cowl (also referred to as a front fairing) covering the front of the body of a bicycle (or an electrically assisted bicycle, an electric bicycle, or a tricycle) to the body of a bicycle (or an electrically assisted bicycle, an electric bicycle, or a tricycle). It relates to a cowl attachment device.

Motorcycles for competition use a front cowl in front of the vehicle body to reduce the resistance caused by the air flow during running, which increases as the speed increases. By installing the front cowl in front of the vehicle body on bicycles (or electric bicycles, electric bicycles, and tricycles), air resistance can be reduced when traveling at high speeds, making it easier to ride. However, a front cowl and mounting hardware that can be easily attached to commercially available bicycles (or electrically assisted bicycles, electric bicycles, tricycles) have not been provided.

Although front cowls for attaching handlebars to motorcycles are commercially available, they are not designed to be attached to bicycles (or electric assisted bicycles, electric bicycles, or tricycles), so you need to make your own mounting hardware. Installation is not easy.

Prior Patent Document 1 describes a method of attaching a windshield to a handlebar of a bicycle (or an electrically assisted bicycle, an electric bicycle, or a tricycle) by fixing it with metal fittings.

Japanese Patent Laid-Open No. 2002-200000 discloses a cowl mounting bracket for a motorcycle that is mounted on a body frame. This mounting bracket consists of a fixing member for fixing the cowl support member to the head pipe of the motorcycle with two U-bolts, and a slide-type cowl height adjustment means for steplessly adjusting the height direction 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 mounting angle of the cowl, and the adjustment of the longitudinal position of the front cowl with respect to the motorcycle is performed by a stepless cowl front and rear adjustment by means of a slidable telescopic structure. with adjustment means.

Public Practical Use No. 53-74854 Utility Model No. 3231177

Front cowls and mounting brackets for motorcycles were not designed for use on bicycles (or electrically assisted bicycles, electric bicycles, and tricycles), and were difficult to install due to the different functions of the vehicle body.

External forces due to crosswinds acting on the front cowl and vibrations during driving act on the front cowl mounting device, and if a force greater than frictional force acts on the screw fastening part of the device, 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 and carbon fiber reinforced plastics in order to reduce weight. Clamping force is limited, and frame strength may be affected if the frame is damaged by equipment installation.

Depending on the direction and strength of the wind, it is possible for one person to finely adjust the position of the front cowl.In case of strong winds or when transporting a bicycle (or electric assist bicycle, electric bicycle, tricycle), the front cowl can be easily removed and reused. It is desirable to have a structure with simple components and few fastening points that can be installed in a short time without adjusting the installation position and angle.

If the front cowl is attached to the steering wheel with metal fittings, when the front cowl receives a strong wind, the external force acts directly on the steering wheel, which may cause unstable steering wheel operation.

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 vehicle body when riding in headwinds or at high speeds. The front cowl can be easily attached to the frame of a commercially available bicycle (or electrically assisted bicycle, electric bicycle, or three-wheeled bicycle) so that it can be ridden comfortably. It was invented based on the knowledge that an instrument suitable for

In order to achieve the above object, the present invention attaches the pedestal of the mounting device for the front cowl to the head tube of a bicycle (or an electrically assisted bicycle, an electric bicycle, or a three-wheeled bicycle) and fastens it with a pedestal fixing means. On the pedestal, the protrusion for attaching the front cowl, the fastening means for connecting the protrusion and the front cowl, and the top tube or down tube (including the top tube and down tube) are sandwiched from both sides, and the direction of the cowl attachment device is set. Since it is equipped with a rotation stop that restrains the bicycle (or electric bicycle, electric bicycle, tricycle) in the direction of travel, it can be easily attached and detached, and even if external force and vibration are applied to the front cowl due to crosswinds. It prevents the front cowl from changing in the mounting angle in the left-right direction with respect to the traveling direction, and external force does not directly act on the steering wheel, so the influence on maneuverability can be reduced.

In order to fix the above-mentioned front cowl mounting device more firmly, the rotation stoppers on both sides and the top tube or down tube (and the top tube and down tube are included) are fastened with the rotation stopper fixing means. The rotation stoppers on both sides are provided with through-holes through which the rotation stopper fixing means are passed, thereby preventing the positional relationship between the rotation stopper fixing means and the rotation stopper from changing due to external forces such as vibrations.

The protruding portion of the pedestal to which the front cowl is attached can prevent the front cowl from rotating around the protruding portion and changing the mounting angle due to an external force, for example, by having a polygonal prism shape. A plurality of through-holes are provided at the base of the projection of the polygonal column, and the pedestal fixing means is fixed to the pedestal and the head tube of the bicycle through the through-holes, so that the positional relationship between the pedestal and the pedestal fixing means due to external force is maintained. prevent changes in The mounting position of the pedestal can be adjusted above or below the head tube by selecting a plurality of through holes.

In order to attach the pedestal of the cowl mounting device to the pipe-shaped head tube of the bicycle (or electric bicycle, electric bicycle, tricycle) in close contact, the mounting side of the pedestal should be, for example, semi-cylindrical or V-shaped. However, since the outer diameter and shape of the head tube of bicycles (or electric bicycles, electric bicycles, and tricycles) may differ slightly, there should be an appropriate amount of elasticity between the pedestal and the head tube, for example. It is attached via a pedestal attachment adjustment means of shape and thickness dimensions, and fastened with a pedestal fixing means. By properly using pedestal attachment adjustment means with elastic 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 three-wheeled bicycles). .

Since the top tube or down tube (and including the top tube and down tube) of a bicycle (or electrically assisted bicycle, electric bicycle, or three-wheeled bicycle) differ in shape and size, the direction of the cowl attachment device should be adjusted according to the direction of the bicycle (or electrically assisted bicycle). , electric bicycles, tricycles) between the rotation stop and the top tube (or down tube) that conforms to the shape of the top tube or down tube (including the top tube and down tube) By inserting the adjustment means, the detent and the top tube or down tube (and the top tube and down tube are included) can be tightly fixed.

In order to adjust the longitudinal position of the front cowl with respect to the advancing direction, the cowl mounting device is provided with longitudinal adjustment means interposed between, for example, a polygonal prism projection and a polygonal fitting hole of the front cowl. The front-rear 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 front and rear positions of the cowl with respect to the traveling direction can be arbitrarily adjusted.

As fastening means between the front cowl and the protruding part of the pedestal, for example, a plurality of bolt holes passing through the outer periphery of the polygonal fitting hole of the front cowl in the vertical direction, and, for example, the vertical direction of the outer periphery of the polygonal prism protruding part. and a plurality of bolt holes penetrating the outer circumference of the front-rear adjustment means in the vertical direction, and the bolt holes are used to fasten with a plurality of bolt members and nut members. can also The positions of either the multiple bolt holes that vertically penetrate the perimeter of the polygonal fitting hole on the front cowl or the multiple bolt holes that vertically perforate the perimeter of the protrusion of the polygonal column are at the same position. For example, a slotted hole can be provided so that fastening can be performed without matching. A plurality of bolt holes penetrating only the upper part of the outer periphery of the front cowl, for example, a polygonal fitting hole, a plurality of bolt holes penetrating only the upper part of the outer periphery of the front-rear adjustment means, and, for example, the outer periphery of the protrusion of a polygonal column. It is also possible to construct a plurality of screw holes that penetrate only the upper portion and fasten with a plurality of bolt members.

The rotation stop of the front cowl mounting device is separated from the pedestal and made into a separate piece, and the rotation stop is movable by providing a shaft that serves as a fulcrum on the pedestal side and a hole for attaching the shaft to the rotation stop, and the head tube. and the top tube or down tube (including the top tube and down tube) for bicycles (or electrically assisted bicycles, electric bicycles, and three-wheeled bicycles) with greatly different coupling angles, adjust the installation angle of the rotation stop and protrude The section can be attached and secured to the top tube or down tube (and including the top tube and down tube).

The rotation stop and the protrusion are fastened with a rotation stop fixing means, the rotation stop and the protrusion are provided with a non-slip, the rotation stop has a hole through which the rotation stop fixing means for fastening with the protrusion passes, It prevents the fixed position of the rotation stop and the protrusion from changing due to external force such as vibration during operation.

The shaft on which the rotation stop is attached is provided with a stopper to prevent the rotation stopper from falling off, a split groove on the shaft for easy attachment and detachment, slopes on both sides of the stopper, and a fillet in the hole of the rotation stopper. , The detachment of the rotation stopper is easy, and the rotation stopper is prevented from falling off from the pedestal during disassembly.

As a means of fine-tuning the angle of the front cowl in the left-right direction, between both sides of the rotation stop and the top tube or down tube (including the top tube and down tube), for example, left and right mounting adjustment with different thickness dimensions on the left and right By inserting the means, it is possible to adjust the lateral angle of the front cowl with respect to the traveling direction.

As a means of adjusting the angle of the front cowl in the vertical direction, by inserting, for example, a pedestal mounting adjustment means with different thickness dimensions on the top and bottom between the pedestal of the front cowl mounting device and the head tube, the movement of the front cowl can be adjusted. You can adjust the vertical angle with respect to the direction.

A front cowl to be attached to the cowl mounting device, comprising a front cowl main body and a fitting hole formed in the rear of the front cowl and extending in the front-rear direction, the fitting hole being formed to match the outer peripheral shape of the protrusion. Therefore, the cowl mounting device can be easily attached to and detached from the projecting portion, and the position of the cowl mounting device is unlikely to change even when an external force acts.

By using the cowl mounting device according to the present invention, the front cowl can be easily attached and detached in a short time to commercially available bicycles (including electrically assisted bicycles, electric bicycles, and three-wheeled bicycles) without manufacturing special jigs. It is possible to adjust the mounting position.

1 is an exploded view of a cowl attachment device according to a first embodiment of the present invention; FIG. Perspective view showing an example of a bicycle with the front cowl attached Detailed view of the mounting state of the cowl mounting hardware seen from above Detailed cross-sectional view of the mounting part of the cowl mounting device seen from the side Perspective view showing an example of the front cowl FIG. 11 is an exploded view of the cowl attachment device according to the second embodiment of the present invention; Exploded view showing details of the pedestal shaft and detent Detailed cross-sectional view of the pedestal shaft and rotation stop mounting holes Detailed view of the pedestal, shaft, and rotation stop viewed from above FIG. 11 is an exploded view of a cowl attachment device according to a third embodiment of the present invention;

An embodiment of a 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 covering the front of the bicycle 16 to be easily attached, detached and adjusted in a short period of time to and from commercially available bicycles 16 (including electrically assisted bicycles, electric bicycles, and three-wheeled bicycles). It is what I did. FIG. 1 is an exploded view showing in an easy-to-understand manner the structure of the cowl attachment device of the first embodiment. FIG. 2 is an overall perspective view simply showing an example when the mounting cowl device of the first embodiment and the front cowl 3 are mounted on a bicycle 16 (or an electrically assisted bicycle, an electric bicycle, or a three-wheeled bicycle). is. FIG. 3 is a top view of the cowl attachment tool according to the first embodiment. FIG. 4 is a cross-sectional side view of the mounting state of the cowl mounting device of the first embodiment and a detailed view. FIG. 5 is a perspective view for explaining the front cowl 3 adapted to the cowl attachment tool. FIG. 6 is an exploded view showing in an easy-to-understand manner the structure of the cowl attachment device of the second embodiment. FIG. 7 is an exploded view showing the details of the cowl attachment tool and the attachment portion of the rotation stoppers 5A and 5B of the second embodiment. FIG. 8 is a cross-sectional view showing the details of the shaft 32 of the base 1A and the holes 31 of the detents 5A and 5B of the cowl attachment device of the second embodiment before and after detachment. FIG. 9 is a top view of the second embodiment of the cowl attachment device with the rotation stoppers 5A and 5B attached to the shaft 32 of the base 1A. FIG. 10 is an exploded view of the cowl attachment device of the third embodiment.

[Bicycle (or electric bicycle, electric bicycle, tricycle)]
Before describing the cowl attachments, a perspective view of the bicycle 16 of FIG. 2 will be described. The bicycle 16 shown in FIG. 2 mainly includes a head tube 2 at the front of the body frame, a top tube 6 interposed 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 the down tube 7 interposed and connected between the lower part of the seat tube 17, the seat tube 17 arranged in the lower part of the saddle and connected with the top tube 6 at the upper part and the down tube 17 at the lower part, and the down tube 7 A chain stay 20 arranged to support an axle provided in the center of the rear wheel 19 from the junction of the seat tube 17 and an axle provided in the center of the rear wheel from the upper junction of the seat tube 17. A seat stay 21 arranged for, a handlebar 22 arranged above the head tube, a fork 23 arranged below the head tube, a front wheel with an axle fastened to the tip of the fork, and an axle with a chain stay. and a rear wheel fastened to the joint at the tip of the seat stay. The body frame is made of thin and lightweight aluminum alloy pipes, high-strength alloy steel pipes, titanium alloy pipes, carbon fiber reinforced plastics, etc. In FIGS. 1, 2 and 4, in order to facilitate the explanation of the cowl attachment device, the handlebar of the bicycle has been simplified, and the brake device, transmission device, crank, chain, power-assisted bicycle and electric bicycle drive unit, etc. have been omitted. morphology.

[Front cowl]
The front cowl 3 of FIG. 5 will be described. The front cowl 3 has a cylindrical or polygonal fitting hole 28 having a shape and dimensions that match the projection 8 extending in the front-rear direction, and a cylindrical or polygonal fitting hole 28 to be connected to the cylindrical or polygonal projection 8 . When the protrusion 8 is formed with a slope 44, the fitting hole 28 is also provided with the same slope, and a plurality of bolts passing through the cylindrical or polygonal fitting hole 28 as fastening means for attaching the protrusion 8 are provided. a hole 27; When a plurality of screw holes 13A (FIG. 10) are formed in the upper portion of the projecting portion 8, a plurality of bolt holes 27A (FIG. 10) pass through only the upper portion of the fitting hole 28 and have a form of elongated holes, It is also possible to fasten with only a plurality of bolt members 14A (FIG. 10). The fitting hole 28 in FIG. 5 has, for example, a square 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. is drawn. Any material can be used for the front cowl 3 as long as it is lightweight and has the necessary strength. FIG. 5 shows a transparent windshield 29 made of polycarbonate or the like to secure the forward visibility of the driver, and a polygonal fitting hole 28 in the front cowl 3 to prevent deformation or damage due to external force due to wind pressure or vibration. ribs 30; 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 can be manufactured as an integral form. can.

[Cowl attachment device according to the first embodiment of the present invention]
Description will be made below with reference to FIGS. The cowl attachment device according to the first embodiment of the present invention mainly consists of a base 1 attached to the head tube 2 of a bicycle 16 (or an electrically assisted bicycle, an electric bicycle, or a three-wheeled bicycle), and a base 1 interposed between the base 1 and the head tube 2 pedestal fixing means 4 for fastening the pedestal 1 to the head tube 2; A rotation stop 5 that holds and restrains from both sides, a left and right mounting adjustment means 10 interposed between the rotation stop 5 and the top tube 6 or down tube 7 or both), a rotation stop 5 and the top tube or down tube (and (including the top tube 6 and the down tube 7), a protrusion 8 for attaching the front cowl in front of the base 1, and a front-rear adjustment means interposed between the protrusion 8 and the front cowl 3. 11 and fastening means for coupling the projecting portion 8 and the front cowl 3 . As means for fastening the protruding portion 8 and the front cowl 3 , for example, bolt holes 13 of the protruding portion 8 , for example bolt holes 27 of the front cowl 3 , for example bolt members 14 , and for example nut members 15 are provided.

[Pedestal 1]
Description will be made below according to FIG. The pedestal 1 has an integral form with a rotation stop 5 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 to which the front cowl 3 is attached. The portion of the base 1 that attaches to the head tube 2 can also have a shape such as a semi-cylindrical or V-shaped shape with an inner diameter larger than the outer diameter of the head tube 2, to accommodate various forms of head tubes 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 necessary strength, and nylon resin, fiber-reinforced plastic, aluminum alloy, and the like are generally used.

[Rotation stopper 5]
The rotation stop 5 is integral with the pedestal 1 and the protrusion 8, and is attached by sandwiching the top tube 6 (or the down tube 7 (and the top tube 6 and the down tube 7)). 1, the protrusion 8 integral with the base 1, and the front cowl 3 attached to the protrusion 8 can be easily attached to the traveling direction of the bicycle (or electric bicycle, electric bicycle, or three-wheeled bicycle). The shape of the top tube 6 or down tube 7 (including the top tube 6 and down tube 7) of the bicycle (including assisted bicycles and electric bicycles) may have an elliptical or triangular cross-sectional shape, or may be cylindrical. Since the outside diameter may be different, the mounting surface of the rotation stop 5 with the top tube 6 or the down tube 7 (including the top tube 6 and the down tube 7) has a flat shape, and the rotation stop 5 on both sides The interval is made wider than the external dimensions of the top tube 6 or down tube 7 (and including the top tube 6 and down tube 7) (for example, 45 to 65 mm), and the rotation stopper 5 and the top tube 6 or down tube 7 (and Into the gap between the top tube 6 and the down tube 7), a right-and-left mounting adjustment means 10 having an appropriate thickness dimension and shape is inserted and used.

[Protrusion 8]
The projecting part 8 has a shape of a cylinder or a polygonal prism (3 to 9 prisms), an appropriate gradient in the form that the tip of the cylinder or polygonal prism tapers, and is constructed on the projecting part as a means of fastening the projecting part 8 and the front cowl 3. and one or more (2 to 5) through-holes 36 penetrating through the base of the projecting portion 8. As shown in FIG. The protrusions in FIGS. 1, 2 and 4 are drawn in the form of polygonal prisms. When the projecting portion 8 has the shape of a polygonal column, it is possible to easily prevent the position of the front cowl from changing in the rotational direction about the projecting portion 8 due to an external force. When the front cowl is attached to the protruding portion, it is possible to eliminate the gap between the mounting portion and the protruding portion and firmly fix the front cowl by providing a form with an appropriate slope in which the tip of the cylinder or polygonal column is tapered. When the polygonal prism of the protruding part is an even number (4, 6, octagonal prism, etc.), the through bolt holes 13 can be constructed in a flat plane both above and below, which is preferable as a form.

[Fastening Means Between Protruding Portion 8 and Front Cowl 3]
As means for fastening the projecting portion 8 and the front cowl 3, a plurality of bolt holes 27 penetrating vertically through the fitting hole 28 of the front cowl 3, a plurality of bolt holes 13 vertically penetrating the projecting portion 8, , and are fastened with a plurality of bolt members 14 and a plurality of nut members 15 using the bolt holes 13 and 27 . If the projecting portion 8 is in the form of a cylinder or a polygonal prism and has a slope, it is difficult to precisely match the positions of the bolt holes 13 of the projecting portion 8 and the bolt holes 27 of the front cowl 3. By forming one of the bolt holes 27 as an elongated hole, the bolt member 14 can easily pass through the bolt holes 13 and 27 and be fastened with the nut member 15 . The bolt hole 27 of the fitting hole 28 of the front cowl 3 penetrates only the upper part, and a screw hole 13A is formed in the protruding part 8, and the bolt member 14A can be directly fastened. A washer interposed between the bolt members 13 and 13A and the nut member 15 and the front cowl 3 can 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 mounting adjusting means 9]
The pedestal mounting adjusting means 9 is made by cutting an elastic sheet-like material to a size suitable for the inner diameter of the cylindrical pedestal 1, and is mounted vertically between the pedestal 1 and the head tube. The cylindrical inner diameter of the portion of the base 1 that is to be fastened to the head tube 2 is made larger than the outer diameter of the head tube 2, and a base mounting adjusting means 9 having an appropriate thickness is provided between the base 1 and the head tube 2. By attaching them, the pedestal 1 and the head tube 2 can be connected without a gap. Since the outer diameters and shapes of the head tubes 2 of commercially available bicycles 16 (or electrically assisted bicycles, electric bicycles, and three-wheeled bicycles) are not the same, many commercially available bicycles can be adjusted by using the pedestal mounting adjustment means 9 with different thicknesses. It becomes possible to attach the same pedestal 1 to . As the material of the pedestal mounting adjustment means 9, a material having elasticity and a large coefficient of friction is preferable, so synthetic rubber is generally employed. The pedestal attachment adjustment means 9 can be prevented from falling off by sticking it to the inside of the semi-cylindrical form of the pedestal 1 with an adhesive or double-sided tape.

[How to adjust the vertical angle of the 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 dimension of the pedestal mounting adjusting means (for upper) 9a and the pedestal mounting adjusting means (for lower) 9b in FIG. Since the vertical mounting angle 45 of the pedestal 1 with respect to the head tube 2 can be changed, the mounting angle in the vertical direction with respect to the traveling direction of the projection 8 provided on the pedestal 1 and the front cowl 3 coupled to the projection 8 can be adjusted.

[Pedestal fixing means 4
The pedestal fixing means 4 is fastened through a through hole 36 penetrating through the base of the projecting portion 8 and between the top tube 6 and the down tube 7 at the portion where the top tube 6 and the down tube 7 are joined to the head tube 2. . The through hole 36 penetrating through the base of the protruding portion 8 can be provided in one place or in a plurality (2 to 5). Either the upper through-hole 36 or the lower through-hole 36 is selected depending on whether upper or lower mounting is desired. A belt or a wire that can be tightened can be used as the fixing means 4 for the pedestal. is desirable. FIG. 1 shows a binding band made of nylon resin as an example.

[Fixing Means 12 for Stopping Rotation]
When the rotation stopper 5 is firmly fixed to the top tube 6 or the down tube 7 (and the top tube 6 and the down tube 7 are included), the rotation stopper fixing means 12 is used. The rotation stop 5 has a through hole 25 through which the rotation stop fixing means 12 passes, and the rotation stop fixing means 12 uses the through hole 25 of the rotation stop 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 stop 5. By using the through hole 25 for the fixing means 25, it is possible to prevent the positional relationship between the rotation stop 5 and the fixing means 25 from being changed by an external force. When external forces such as side winds and vibrations are small, the fastening means 12 for rotation stop is not used, and the top tube 6 or down tube 7 (and the top tube 6 and down tube 7 are included) by the rotation stop 5 is used. It can also be used only by restraint by pinching and attaching. A belt or wire that can be tightened can be used as the fixing means 12 for stopping rotation, but it can be tightened with an appropriate force without damaging the frame of the bicycle 16 (or an electrically assisted bicycle, an electric bicycle, or a three-wheeled bicycle). It is desirable to have a locking device. FIG. 1 shows a binding band made of nylon resin as an example.

[Left and right attachment adjusting means 10]
The left and right attachment adjustment means 10 is used by cutting an elastic material to a suitable size and inserting it into the gap between the rotation stopper 5 and the top tube 6 or down tube 7 (and the top tube 6 and down tube 7 are included). Even if the shape of the top tube 6 or down tube 7 (and top tube 6 and down tube 7 is included) has an elliptical or triangular cross-sectional shape, or a cylindrical shape with various external dimensions, the gap size and shape By using a suitable side-to-side mounting adjustment means 10, the rotation stop 5 can contact the top tube 6 or the down tube 7 (and the top tube 6 and the down tube 7) through the side-to-side mounting adjustment means 10 without gaps. Therefore, it is possible to prevent a change in the attachment angle in the left-right direction due to the influence of the external force of the front cowl 3 and the cowl attachment device. The right and left mounting adjustment means 10 is generally made of synthetic rubber. By using a material with elasticity and a large coefficient of friction, the rotation stopper 5 and the top tube 6 or down tube 7 (and the top tube 6 and down tube 7) can be attached in close contact even if the outer diameter size and shape are slightly different. The left and right attachment adjusting means 10 are adhered to the inner side of the rotation stop 5 with an adhesive or double-faced tape, so that the left and right attachment adjusting means 10 can be prevented from coming off.

When the left and right mounting adjusting means 10 are 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 down tube 7 (and the top tube 6 and down tube 7 are included) can be directly fastened with the rotation stopper fixing means 12 for use. When external forces such as side winds and vibrations are small, the fastening by the anti-rotation fixing means 12 is not used, and the top tube 6 or down tube 7 (and the top tube 6 and down tube 7 are included) by the rotation stopper 5 is not used. It can also be used only by restraining the mounting part of If a nylon resin or the like having excellent toughness is used as the material for the rotation stopper 5, the width between the left and right rotation stoppers should be outside the top tube 6 or the down tube 7 (including the top tube 6 and the down tube 7). The rotation stopper 5 is tightened by setting the dimension slightly narrower than the diameter dimension, widening the width of the rotation stopper 5 by hand, and assembling it to the top tube 6 or the down tube 7 (including the top tube 6 and the down tube 7). It can also be used by constraining only by force.

[How to adjust the angle of the front cowl in the horizontal direction]
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 electric assist bicycle, electric bicycle, tricycle), the rotation stop 5 and the top tube 6 or down tube 7 ( and the top tube 6 and the down tube 7), the left and right mounting adjusting means 10 having different thickness dimensions and an appropriate slope are inserted, and the mounting angle 46 in the left and right direction (Fig. 3 ) can be adjusted.

[Fore-and-aft adjustment means 11]
The longitudinal adjustment means 11 is interposed between the front cowl 3 and the projecting portion 8 and used to adjust the front cal 3 to an arbitrary position in the longitudinal direction with respect to the direction of travel. The front-rear adjustment means 11 has an external form having a shape and dimensions matching the fitting hole 28 of the front cowl at a specific position, and an internal form having a shape and dimensions matching the protrusion 8 at a specific position. The front cowl 3 can be adjusted to a specific position in the longitudinal direction with respect to the direction of travel, since it is in close contact with the gap between the fitting hole 28 of the front cowl 3 and the projecting portion 8 at a specific position. For example, nylon resin or fluororesin is used as the material of the back-and-forth adjusting means 11. However, the material is not limited to this, and stainless steel or aluminum thin plate, metal tape, paper or vinyl tape can also be used. The front-rear adjustment means 11 can be used by adhering it to the outside of the projecting portion 8 with an adhesive or an adhesive tape in order to prevent it from coming off.

[Cowl attachment device according to the second embodiment of the present invention]
FIG. 6 is a diagram for explaining the front cowl and the mounting portion of a bicycle 16 (or an electrically assisted bicycle, an electric bicycle, or a three-wheeled bicycle) for mounting the cowl mounting device and the front cowl according to the second embodiment of the present invention. 1 is an exploded view of the overall configuration; FIG. FIG. 7 is a detailed view 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. FIG. 8(a) is a detailed enlarged view for explanation when the shaft 32 of the pedestal 1A and the holes 31 of the rotation stopper (right) 5B and the rotation stopper (left) 5A are fitted. 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 base 1A. FIG. 9 is an explanatory perspective view after the rotation stopper (right) 5B and the rotation stopper (left) 5A are attached to the shaft 32 of the base 1A.

Description will be made below with reference to FIGS. In the second embodiment, the rotation stopper 5 of the first embodiment is divided from the base 1 and made into a separate piece pedestal 1A, a separate piece rotation stopper (left) 5A, and a separate piece rotation stopper (right ) 5B, a fixing member 33 for fastening the rotation stopper (right) 5B and the rotation stopper (left) 5A to the protrusion 8, and the rotation stopper (left) 5A and the rotation stopper (right) 5B and the protrusion 8 It comprises a non-slip 35 interposed therebetween, a shaft 32 provided on the instrument 1A, and holes 31 for the rotation stop (left) 5A and the rotation stop (right) 5B to be inserted into the shaft 32. Since other parts are the same as those of the cowl attachment device of the first embodiment, description thereof is omitted.

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

[Explanation of shaft 32 of base 1A]
The shaft 32 of the base 1A will be described below with reference to FIGS. 7, 8(a) and 8(b). The shaft 32 of the pedestal 1A includes a retainer 38 for preventing the rotation stopper (left) 5A and the rotation stopper (right) 5B from falling off from the shaft 32 during installation, the shaft 32, the rotation stopper (left) 5A and the rotation A split groove 39 for facilitating attachment and detachment of the stopper (right) 5B, and a chamfer 40 constructed on both sides of the stopper 38 for facilitating attachment and detachment of the rotation stopper (left) 5A and rotation stopper (right) 5B and the shaft 32. and a seat 41 for preventing interference between the rotation stop (left) 5A and the rotation stop (right) 5B and the corner of the pedestal 1A during installation.

[Explanation of function of 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. 8A and 8B 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 long hole 31 of the stop (left) 5A and the rotation stop (right) 5B is, for example, 9.5 mm. By providing a 1 mm fret 42, the split groove 39 is slightly deformed at the time of attachment and detachment, and the fillet 42 at the corner of the hole and the slope of the stopper 38 allow 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 described below with reference to FIGS. 6 to 8(a) and FIG. 8(b). The rotation stopper (right) 5B and the rotation stopper (left) 5A are separate pieces separated from the base 1A, and the rotation stopper (right) 5B and the rotation stopper (left) 5A are fitted to the shaft 32 of the base 1A. and a hole 34 for passing a band 33 for fastening the rotation stopper (right) 5B and the rotation stopper (left) 5A to the projecting portion 8 . The contact surfaces 43 that engage with the projections 8 of the rotation stop (right) 5B and the rotation stop (left) 5A have the same gradient as the polygonal prism projections 8 and the rotation stop (right) 5B and rotation stop (left) 5A. and a non-slip 35 having a large elasticity and coefficient of friction interposed between the projection 8 and preventing a change in the mounting position due to an external force such as vibration during operation. As the material for the rotation stopper (right) 5B and the rotation stopper (left) 5A, any material that is lightweight and has the necessary strength can be used, and nylon resin, fiber reinforced plastic, aluminum alloy, etc. are generally used. . The non-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 anti-rotation (right) 5B and the anti-rotation (left) 5A with an adhesive or double-sided tape. prevent

[Description of functions of rotation stopper (right) 5B and rotation stopper (left) 5A]
The angle 37A at which the connecting portion of the head tube 2 and the top tube 6 of the bicycle 16 of FIG. 1 intersect in the first embodiment is, for example, 95 degrees. is 110 degrees, for example, and the difference is large. For this reason, the rotation stop 5 integral with the base 1 manufactured to match the angle 37A in FIG. 5 cannot be attached to the side of the top tube 6 in FIG. However, the rotation stop (left) 5A and the rotation stop (right) 5B, which are separate pieces of the base 1A of the second embodiment shown in FIG. Since the hole allows it to slide up and down, it can be attached at the optimum position for both the angle 37A and top tube 6 of the bicycle 16 in FIG. 1 and the angle 37B and top tube 6 of the bicycle in FIG. be able to.

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

As shown in FIG. 6, the third embodiment includes a base 1A fixed to the top tube 6 of a bicycle (or an electrically assisted bicycle, an electric bicycle, or a three-wheeled bicycle), and a polygonal column integrally formed with the base 1A. It comprises a projecting portion 8A, a front cowl 3A having a hole matching the projecting portion 8A, and means for fastening the front cowl 3A and the polygonal prismatic projecting portion 8A of the base 1A. The front-rear adjustment means 11 interposed between the front cowl 3 and the projecting portion 8 used in the first and second embodiments is not used in the third embodiment. Since other parts are the same as those of the cowl attachment device of the first and second embodiments, description thereof is omitted.

[Description of installation of pedestal 1A and front cowl 3A]
The pedestal 1A will be described below with reference to FIG. As in the first and second embodiments, the cowl mounting base 1A of the third embodiment is formed integrally with the polygonal column protrusion 8A for mounting and coupling the front cowl 3A. Unlike the second embodiment, it is provided with a polygonal prismatic protrusion 8A having no gradient and a plurality of screw holes 13A as fastening means with 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 pedestal 1A, and a plurality of long holes 27A as fastening means for the polygonal prism protrusion 8A. Since the protrusion 8A of the polygonal column of the base 1A and the fitting hole 28A of the front cowl 3A have the same dimensions without a slope, the front cowl can be moved in the longitudinal direction with respect to the traveling direction without using the longitudinal adjustment means 11. Can be adjusted to any position. A multitude of screw holes 13A (M6x18 places in FIG. 6) are provided on the upper surface of the polygonal columnar projection 8A of the base 1A, so that it can be fastened at an arbitrary position. Although there are two fastening bolt members 14A in FIG. 6, due to manufacturing tolerances, there is a minute gap between the projection 8A and the fitting hole 28A of the front cowl 3A. When the external force from the bolt member 14A is large, the fastening force can be increased by adding the number of bolt members 14A. As the material of the base 1A, any material having light weight and required strength can be used, and nylon resin, fiber reinforced plastic, aluminum alloy, etc. are generally adopted.

A plurality of threaded holes 13A in the projecting portion 8A, a plurality of elongated holes 27A in the front cowl, and a plurality of bolt members 14A, which are fastening means between the base 1A and the front cowl 3A, are the same as those of the first and second embodiments. morphology can also be adopted.

The polygonal prism protrusions without the inclination 44 of the base 1A can also be employed in the base 1 of the first embodiment.

In addition to the front cowl 3, a basket or a bag having holes matching the protrusions can be attached to the protrusions 8 and 8A of the pedestals 1 and 1A.

1 Pedestal 1B Pedestal 2 Head tube 3 Front cowl 4 Fixing means for pedestal 5 Rotation stopper 5A Rotation stopper (left) 5B Rotation stopper (Right), 6... Top tube, 7... Down tube, 8... Protruding part, 8A... Protruding part, 9... Pedestal mounting adjustment means (9a... Upper side, 9b... Lower side), 10. Left-right mounting adjustment means 11 Front-back adjustment means 12 Anti-rotation fixing means 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... Fork, 24... Front wheel, 25... Through hole, 26 Through hole 27 Bolt hole 27A Long hole 28 Fitting hole 28A Fitting hole 29 Windshield 30 Rib 31 Hole 32 Axle 33 Fixing member 34 Through hole 35 Fixing means 36 Through hole 37A Angle 37B Angle 38 Stopper 39 Split groove 40 Chamfer 41 seat 42 fillet 43 mounting surface 44 gradient 45 vertical mounting angle 46 horizontal mounting angle

Claims (11)

A cowl attachment device for attaching a front cowl that covers the front of the body of a bicycle, electrically assisted bicycle, electric bicycle, or tricycle to a bicycle, electrically assisted bicycle, electric bicycle, or tricycle ,
A pedestal for fixing the cowl attachment device to the head tube of a bicycle, an electrically assisted bicycle, an electric bicycle, or a three-wheeled bicycle ;
pedestal fixing means for fastening the pedestal to the head tube of a bicycle, an electrically assisted bicycle, an electric bicycle, or a tricycle ;
a protrusion for attaching the front cowl to the pedestal;
fastening means for coupling the projecting portion and the front cowl;
This cowl mounting device is characterized by comprising a rotation stop for holding a top tube or a down tube from both sides and restraining the mounting direction of a pedestal in the traveling direction of a bicycle, an electrically assisted bicycle, an electric bicycle, or a three-wheeled bicycle . The cowl attachment device of claim 1,
anti-rotation fixing means for further fastening the anti-rotation to the top tube or down tube ;
Further, the cowl attachment device is characterized by comprising a through-hole through which a rotation-stop fixing means formed in the rotation-stop is passed. In the cowl attachment device according to any one of claims 1 to 2,
the protrusion is formed in the shape of a polygonal prism,
Further, the pedestal is provided with a hole penetrating through the base of the projecting portion for passing the pedestal fixing means for fastening to the head tube of a bicycle, an electrically assisted bicycle, an electric bicycle, or a three-wheeled bicycle . A cowl attachment tool. In the cowl attachment device according to any one of claims 1 to 3,
A cowl attachment device comprising: a pedestal of the cowl attachment device and a pedestal attachment adjusting means interposed between a head tube of a bicycle, an electrically assisted bicycle, an electric bicycle, or a three-wheeled bicycle . In the cowl attachment device according to any one of claims 1 to 4,
A cowl attachment device comprising the rotation stop and left and right attachment adjustment means interposed between the top tube or down tube of a bicycle, an electrically assisted bicycle, an electric bicycle, or a tricycle . In the cowl attachment device according to any one of claims 1 to 5,
The protruding portion of the cowl attachment device is provided with a gradient that moderately thins the tip,
a front-rear adjusting means interposed between the front cowl and the protruding portion for adjusting the mounting position of the front cowl in the front-rear direction toward the traveling direction of the bicycle, electrically assisted bicycle, electric bicycle, or three-wheeled bicycle . A cowl mounting fixture characterized by: In the cowl attachment device according to any one of claims 1 to 6,
A cowl attachment device comprising a right rotation stopper and a left rotation stopper separated from the pedestal of the cowl attachment device and formed as separate pieces. The cowl attachment device of claim 7 ,
a fixing member for fastening the right rotation stop and the left rotation stop to the protrusion;
through-holes formed in the right and left rotation stops for passage of securing members;
Furthermore, a non-slip interposed between the right and left rotation stops and the protrusions to prevent the connecting positions of the right and left rotation stops and the protrusions from changing due to external force; A cowl attachment device comprising: In the cowl attachment device according to any one of claims 7 to 8 ,
a shaft formed on the pedestal for fitting the right rotation stop and the left rotation stop to the pedestal of the cowl attachment device;
and a hole formed in the right rotation stop and the left rotation stop for fitting the right rotation stop and the left rotation stop to the shaft formed in the pedestal. . The cowl attachment device of claim 9 ,
In order to prevent the right rotation stopper and the left rotation stopper from falling off from the shaft formed on the pedestal of the cowl attachment device, a stopper constructed at the end of the shaft;
a split groove constructed at the end of the shaft for facilitating attachment and detachment of the shaft formed on the pedestal from the right rotation stopper and the left rotation stopper ;
a chamfer provided on both sides of the shaft retainer for easy attachment and detachment of the shaft formed on the pedestal with the right rotation stopper and the left rotation stopper ;
a fillet at the end of the hole formed in the right rotation stop and the left rotation stop in order to easily attach and detach the shaft formed on the right rotation stop and the left rotation stop and the pedestal. A cowl attachment device characterized by: A front cowl to be attached to the cowl attachment tool according to any one of claims 1 to 10, comprising a front cowl main body and a fitting hole formed in the rear of the front cowl and extending in the front-rear direction, wherein the fitting hole protrudes. A front cowl characterized by being formed so as to match the outer peripheral shape of the part.

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