JP2010149571A - Front wheel device for two-wheeled vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a front wheel device for a two-wheeled vehicle, reducing restrictions on a rotational angle when steering the handlebar of the two-wheeled vehicle. <P>SOLUTION: This front wheel device includes left and right front forks 30a, 30b supporting left and right front wheels 40a, 40b of a one-end holding structure so that they are opposed independently with a narrow interval in the lower ends of left and right supporting frames 35a, 35b, and an upper end mechanism 50 connected to the handlebar side of the two-wheeled vehicle while supporting the upper end 36 of the left and right supporting frames 35a, 35b. In the upper end mechanism 50, supporting arms 55 are extended forward from the central part of a connection member 51 connected to the handlebar side of the two-wheeled vehicle, and the upper end 36 of the supporting frames 35a, 35b is fixed and supported in the front ends of the supporting arms 55. Moreover, the supporting frames 35a, 35b are arranged to be separated from the front edge 16 of the front fender 15 of the two-wheeled vehicle. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a front wheel device for a two-wheeled vehicle that is mounted in a front fender of the two-wheeled vehicle.

  As a conventional technique, for example, JP-A-2006-248289 or one shown in FIG.

  That is, as shown in FIG. 3, the conventional front wheel device for a motorcycle has a right front fork 2 and a left front fork 3 each having a buffer mechanism 1 connected to each other by a connecting member 5 of an upper end mechanism 4 and extended downward. The right front wheel 6 and the left front wheel 7 that are opposed to each other at a narrow interval are supported inside the lower ends of the front forks 2 and 3.

JP 2006-248289 A

  However, in such a conventional technique, the right front fork 2 and the left front fork 3 are connected to each other by the connecting member 5 of the upper end mechanism 4 and extended downward. The outer edge of the front fork 3 is close to the front edge of the front fender of the two-wheeled vehicle. There was a problem that the degree was low.

  The present invention has been made paying attention to such problems of the prior art, and the left and right support frames are arranged so as to be separated from the front edge of the front fender of the motorcycle, and the handle of the motorcycle is cut off. An object of the present invention is to provide a front wheel device for a two-wheeled vehicle that can reduce the limitation of the rotation angle.

The gist of the present invention for achieving the object lies in the inventions of the following items.
[1] A front wheel device (20) for a two-wheeled vehicle to be fitted in a front fender (15) of the two-wheeled vehicle,
The right front fork (30a) is formed by supporting the right front wheel (40a) and the left front wheel (40b) of the cantilever structure so as to be opposed to each other at a narrow interval on the lower ends of the left and right support frames (35a, 35b). And a left front fork (30b), and upper end mechanisms (50) for supporting the upper end portions (36) of the left and right support frames (35a, 35b) and connected to the handle side of the two-wheeled vehicle,
The upper end mechanism (50) is formed by extending a support arm (55) forward from a central portion of a connecting member (51) connected to the handle side of the motorcycle.
The upper ends (36) of the left and right support frames (35a, 35b) are fixedly supported at the distal end of the support arm (55), and the left and right support frames (35a, 35b) are front fenders (15) of the motorcycle. A front wheel device (20) for a two-wheeled vehicle, wherein the front wheel device (20) is disposed away from the front edge (16) of the motorcycle.

[2] The left and right support frames (35a, 35b) are integrally formed in an inverted U-shape, and are supported at the center of the inverted U-shaped top (37) and extend forward from the central portion of the connecting member (51). Item 2. The front wheel device (20) for a motorcycle according to item 1, wherein the arm (55) is consolidated.

[3] A buffer mechanism (60) is provided between both ends (53a, 53b) of the connecting member (51) connected to the handle side of the two-wheeled vehicle and the left and right front wheels (40a, 40b). Item 2. The front wheel device (20) for a two-wheeled vehicle according to item 1.

[4] The front wheel device (20) for a two-wheeled vehicle according to (1) or (2), wherein the support arm (55) extending forward from the central portion of the connecting member (51) is two pipe members.

The present invention operates as follows.
The front wheel device (20) of the motorcycle is mounted so as to fit in the front fender (15) at the front of the motorcycle body.

  A support arm (55) extends forward from the center of the connecting member (51) of the upper end mechanism (50) connected to the handle side of the two-wheeled vehicle, and the tip of the support arm (55) remote from the vehicle body of the two-wheeled vehicle Since the left and right support frames (35a, 35b) fixedly supported by the portion extend downward, the left and right support frames (35a, 35b) are separated from the front edge (16) of the front fender (15) of the motorcycle. ing. Further, the portion of the support arm (55) is narrow and has a pocket shape, so there is no possibility of interference with the vehicle body.

  When the handle of the motorcycle is cut, the right front fork (30a) and the left front fork (30b) rotate integrally. Since the left and right support frames (35a, 35b) are separated from the front edge (16) of the front fender (15) of the two-wheeled vehicle, they do not easily interfere with the vehicle body of the two-wheeled vehicle, and interfere with objects that are conventionally interfered. It can cope with a variety of motorcycle bodies.

  The right front wheel (40a) of the cantilever structure which is supported by the lower end part of the left and right support frames (35a, 35b) with the right front fork (30a) and the left front fork (30b) and is opposed to each other at a narrow interval. The front wheel (40b) operates independently during traveling, and functions as a tricycle while being based on a two-wheeler.

  When traveling, the buffer mechanism (60) is located between both ends (53a, 53b) of the connecting member (51) connected to the handle side of the two-wheeled vehicle and the left and right front wheels (40a, 40b), and absorbs unevenness on the road surface. To improve the ride comfort. The buffer mechanism (60) may be provided between the support arm (55) and the support frame (35a, 35b).

  The left and right support frames (35a, 35b) integrally formed in an inverted U-shape are supported by a support arm (55) that extends forward from the central portion of the connecting member (51) at the center position of the inverted U-shaped top portion (37). Because it is consolidated, it exhibits high rigidity and stable performance.

  Since the support arms (55), which are two pipe members extending forward from the central portion of the connecting member (51), complement each other, they are difficult to break at the time of a collision or the like, and have high safety.

  According to the front wheel device for a motorcycle according to the present invention, the left and right support frames of the right front fork and the left front fork are separated from the front edge of the front fender of the motorcycle, so that there is less interference between the vehicle body and both front forks. The specification of the car body that can be mounted is widened, and it can be applied to various types of motorcycle bodies. In addition, rigidity is increased, operational stability is improved, and safety is ensured.

Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings.
1 and 2 show an embodiment of the present invention.
The front wheel device 20 for a two-wheeled vehicle is mounted so as to fit within the front fender 15 of the body 10 of the two-wheeled vehicle.

  The front wheel device 20 of a two-wheeled vehicle is formed by combining a right front fork 30a and a left front fork 30b on the left and right. The right front wheel 40a and the left front wheel 40b having a cantilever structure are supported at lower ends of the left and right support frames 35a and 35b of the front forks 30a and 30b so as to face each other independently at a narrow interval.

  An upper end mechanism 50 that supports upper end portions of the left and right support frames 35a and 35b and is connected to the handle side of the two-wheeled vehicle is provided on the upper part of the front wheel device 20 of the two-wheeled vehicle.

  In the upper end mechanism 50, a support arm 55 extends forward from the center of a connecting member 51 having connecting pins 52, 52 connected to the handle side of the two-wheeled vehicle. The support arm 55 is formed by welding and fixing the base ends of two round pipe members to the connecting member 51.

  The upper end portions 36 of the left and right support frames 35a and 35b, both of which are round pipes, are welded and supported at the tip of the support arm 55, and the left and right support frames 35a and 35b are in front of the front fender 15 of the motorcycle. It arrange | positions so that it may become a position away from the edge part 16. FIG.

  The left and right support frames 35a and 35b are integrally formed in an inverted U shape, and a support arm 55 extending forward from the central portion of the connecting member 51 is welded to the center position of the inverted U-shaped top portion 37.

  A buffer mechanism 60 is provided between both end portions 53a and 53b of the connecting member 51 of the upper end mechanism 50 connected to the handle side of the two-wheeled vehicle and the left and right front wheels 40a and 40b.

Next, the operation will be described.
The front wheel device 20 of the two-wheeled vehicle is mounted so as to fit in the front fender 15 at the front of the two-wheeled vehicle body.

  A support arm 55 extends forward from the central portion of the connecting member 51 of the upper end mechanism 50 connected to the handle side of the two-wheeled vehicle, and is separated from the front edge 16 of the front fender 15 of the two-wheeled vehicle. Left and right support frames 35a and 35b that are solidified and supported at the tip end portions extend downward.

  The left and right support frames 35a and 35b are separated from the front edge portion 16 of the front fender 15 of the two-wheeled vehicle, and the support arm 55 is narrow and has a pocket shape, so there is no possibility of interference with the front portion of the vehicle body.

  When the handle of the motorcycle is cut, the right front fork 30a and the left front fork 30b rotate integrally. Since the left and right support frames 35a and 35b are separated from the front edge 16 of the front fender 15 of the two-wheeled vehicle, even if the front wheel device 20 of the two-wheeled vehicle is turned by turning the handle fully, It is difficult to interfere with the front edge portion 16 and does not interfere with an object that interferes in the prior art, and can deal with a variety of two-wheeled vehicle bodies.

  The right front wheel 40a and the left front wheel 40b, which are supported by the lower end portions of the left and right support frames 35a, 35b of the right front fork 30a and the left front fork 30b and are opposed to each other at a narrow interval, are independent during traveling. Operates and functions as a tricycle, based on a two-wheeler.

  When traveling, the shock absorbing mechanism 60 is located between the both end portions 53a and 53b of the connecting member 51 connected to the handle side of the two-wheeled vehicle and the left and right front wheels 40a and 40b. To improve. The buffer mechanism 60 may be provided between the support arm 55 and the support frames 35a and 35b, or may be one that operates against vibration.

  Since the left and right support frames 35a and 35b integrally configured in an inverted U shape have a support arm 55 that extends forward from the central portion of the connecting member 51 at the center position of the inverted U-shaped top portion 37, High rigidity and stable performance.

  Since the support arms 55, which are two pipe members extending forward from the central portion of the connecting member 51, complement each other, they are not easily destroyed at the time of a collision or the like, and are highly safe.

1 is a perspective view showing a front wheel device of a motorcycle according to an embodiment of the present invention. 1 is a perspective view showing a state in which a front wheel device for a two-wheeled vehicle according to an embodiment of the present invention is mounted on the two-wheeled vehicle. It is a perspective view which shows the prior art example of the front-wheel apparatus of a two-wheeled vehicle.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Vehicle body 15 ... Front fender 16 ... Front edge part 20 ... Two-wheeled vehicle front wheel device 30a ... Right front fork 30b ... Left front fork 35a ... Right support frame 35b ... Left support frame 36 ... Upper end part 37 ... Top part 40a ... Right Front wheel 40b ... Left front wheel 50 ... Upper end mechanism 51 ... Connection member 52 ... Connection pin 53a, 53b ... End 55 ... Support arm 60 ... Buffer mechanism

Claims (4)

A front wheel device for a two-wheeled vehicle to be fitted in a front fender of a two-wheeled vehicle,
A right front fork and a left front fork that are supported by a lower end portion of the left and right support frames so that the right front wheel and the left front wheel of the cantilever structure are opposed to each other with a narrow space therebetween, and the upper end portions of the left and right support frames. An upper end mechanism coupled to the handle side of the motorcycle,
The upper end mechanism is formed by extending a support arm forward from a central portion of a connecting member connected to the handle side of the motorcycle.
A front wheel device for a two-wheeled vehicle, wherein upper ends of the left and right support frames are fixedly supported at the tip of the support arm, and the left and right support frames are arranged so as to be separated from a front edge portion of a front fender of the two-wheeled vehicle.   The left and right support frames are integrally formed in an inverted U shape, and a support arm extending forward from a central portion of the connecting member is consolidated at a central position of the top portion of the inverted U shape. The front-wheel apparatus of the described motorcycle.   The front wheel device for a two-wheeled vehicle according to claim 1, wherein a buffer mechanism is provided between both ends of the connecting member connected to the handle side of the two-wheeled vehicle and the left and right front wheels.   The front wheel device for a two-wheeled vehicle according to claim 1 or 2, wherein the support arm extending forward from the central portion of the connecting member is two pipe members.

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