JP2010115992A - Saddle-riding type vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a saddle-riding type vehicle capable of suppressing vibration of its front fender. <P>SOLUTION: The saddle-riding type vehicle includes: a front fork 3 which includes a steering shaft 40 supported pivotally by a head pipe, a pair of legs 50 supporting a front wheel rotatably at a lower end, and an under bracket 60 to which the lower end of the steering shaft 40 and the upper ends of the legs 50 are attached; the front fender 70 attached to the under bracket 60 so as to cover an upper part of the front wheel; and a limiting means to limit relative movement between the front fork 3 and the front fender 70 laterally outside the portion to which the front fender 70 is attached. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a straddle-type vehicle, and particularly to a front fender mounting structure.

In a straddle-type vehicle such as a motorcycle, a front fender for receiving mud or the like splashed up by a front wheel is provided so as to cover the top of the front wheel. Patent Document 1 discloses a mounting structure in which a front fender is attached to a bracket that extends forward from a bridge member that connects upper ends of a pair of legs that support a front wheel.
JP 2008-174040 A

  However, the conventional mounting structure has a problem that the front fender is likely to vibrate because the position where the front fender is attached to the bracket is away from the bridge member.

  In particular, in the conventional mounting structure described above, the front portion of the bracket has a shape that spreads sideways, but the root portion is narrower than the distance between the leg portions, so that the front fender is likely to vibrate in the roll direction. .

  The present invention has been made in view of the above circumstances, and a main object of the present invention is to provide a straddle-type vehicle capable of suppressing vibration of a front fender.

  In order to solve the above problems, a saddle riding type vehicle according to the present invention includes a steering shaft that is rotatably supported by a head pipe, a pair of legs that rotatably support a front wheel at a lower end portion, and the steering shaft. A front fork including an under bracket to which a lower end of the leg and an upper end of the leg are attached; a front fender attached to the under bracket and covering the front wheel; and a portion to which the front fender is attached Limiting means for limiting relative movement between the front fork and the front fender on the outside in the vehicle width direction.

  According to the present invention, the front fender is attached to the under bracket, and further, the limiting means for limiting the relative movement between the front fork and the front fender is provided outside the vehicle width direction. (In particular, vibration in the roll direction) can be suppressed.

  Embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a left side view of a motorcycle 1 according to an embodiment of a saddle riding type vehicle of the present invention. 2 and 3 are a left side view and an exploded perspective view of the front fork 3 and the front fender 70 provided in the motorcycle 1. FIG. 4 is a cross-sectional view taken along line IV-IV shown in FIG. 5 to 7 are a front view, a plan view, and a left side view of the front fender 70.

  As shown in FIG. 1, the motorcycle 1 includes an underbone body frame 2. The vehicle body frame 2 includes a head pipe 2a provided at the front end, a main pipe 2b extending rearward and obliquely downward from the head pipe 2a, a seat rail 2c extending obliquely upward and rearward from the middle of the main pipe 2b, and a main pipe 2b. And a vertical frame portion 2d extending downward from the rear portion.

  A front fork 3 is supported on the head pipe 2a so as to be steerable. A handle 4 is provided at the upper end of the front fork 3, and a front wheel 5 is rotatably supported at the lower end. The front wheel 5 is covered with a front fender (front half front fender) 70 on the upper side and covered with a rear half front fender 79 on the rear.

  An engine 6 is suspended from the main pipe 2b. On the seat rail 2c, a straddle-type seat 7 on which a passenger sits is disposed. A rear arm 8 extending in the front-rear direction is pivotally supported on the vertical frame portion 2d, and a rear wheel 9 is rotatably supported on a rear end portion of the rear arm 8.

  As shown in FIGS. 2 to 4, the front fork 3 includes a steering shaft 40, a pair of leg portions 50 arranged in the vehicle width direction, and an under bracket 60 that connects them.

  The steering shaft 40 extends substantially in the vertical direction, and a lower end portion of the steering shaft 40 is attached to a shaft attachment portion 64 provided at the center portion of the under bracket 60. As shown in FIG. 1, the steering shaft 40 is rotatably supported by the head pipe 2 a of the vehicle body frame 2.

  The leg portion 50 is configured as a suspension device in which an inner tube 51 and an outer tube 56 extending substantially in the vertical direction can swing relatively.

  The outer tube 56 disposed on the lower side has a shaft support portion 56a for rotatably supporting the front wheel 5 at the lower end portion thereof. Moreover, the outer tube 56 has a fender attachment portion 56b to which a rear half-side front fender 79 (see FIG. 1 described above) is attached in an upper half portion thereof. Further, the outer tube 56 arranged on the right side has a caliper mounting portion 56c to which a brake caliper (not shown) is mounted in the lower half portion thereof.

  The inner tube 51 disposed on the upper side is inserted into the outer tube 56 from the lower end side, and the upper end portion thereof is attached to leg attachment portions 62 provided on both sides of the under bracket 60. The leg attachment portion 62 is formed with a hole portion 62b penetrating in a substantially vertical direction, and the upper end portion of the inner tube 51 is inserted into the hole portion 62b. The upper end of the inner tube 51 is aligned with the opening on the upper side of the hole 62b. The inner tube 51 thus inserted into the hole 62b is tightened by a pinch bolt inserted into the bolt insertion hole 62a.

  As shown in FIG. 4, the inner tube 51 and the outer tube 56 achieve a buffer function by a spring 59 housed in the internal space. A cylindrical lid member 58 is fitted into the upper end portion of the inner tube 51, and the upper end portion of the spring 59 is in contact with the lid member 58. The lid member 58 has a slightly recessed central portion on the upper surface so that only the lid member 58 can be applied when fitted into the inner tube 51.

  As shown in FIGS. 5 to 7, the front fender 70 has a substantially plate-like attachment portion 72 attached to the under bracket 60, and extends obliquely downward from the attachment portion 72, and is curved in a convex shape upward. And a forward extending portion 76.

  Further, the front fender 70 has a substantially semi-cylindrical outer covering portion 74 extending substantially in the vertical direction on both sides of the attachment portion 72 in the vehicle width direction. As shown in FIGS. 2 and 4, the outer cover portion 74 covers the outer side of the leg portion 50 in the vehicle width direction.

  A flange 78 is provided on the upper end of the outer cover 74. As shown in FIGS. 2 and 4, the collar portion 78 covers the upper end portion of the leg portion 50. In addition, a hole 78 a is formed in the central portion of the flange portion 78.

  The said under bracket 60 is arrange | positioned between the attaching part 72 and the collar part 78, as FIG.3 and FIG.4 shows. The mounting portion 72 is fastened to the lower surface of the central portion of the under bracket 60 with a plurality of bolts 91. These bolts 91 are inserted into bolt insertion holes 72 a (see FIG. 6) formed in the attachment portion 72, and are fastened to a fender attachment portion 66 provided in the under bracket 60.

  On the other hand, the collar portion 78 is located above the leg mounting portion 62 of the under bracket 60 and forms a certain gap therebetween. An elastic member 80 made of rubber or the like is disposed in the gap. The elastic member 80 has a disk-shaped main body 81 and a protruding portion 83 protruding upward. The main body 81 closes the opening on the upper side of the hole 62b and attaches the leg. It is sandwiched between the part 62 and the collar part 78. Further, the projection 83 is fitted into a hole 78 a formed in the flange 78.

  Here, when the mounting portion 72 is fastened to the lower surface of the under bracket 60, the thickness of the gap between the leg mounting portion 62 and the flange portion 78 is the original thickness of the main body portion 81 of the elastic member 80. It is set smaller than this. For this reason, the main-body part 81 is arrange | positioned in the state compressed by the clearance gap between the leg part attaching part 62 and the collar part 78, and applies a restoring force with respect to these. Further, a recess 85 a is formed on the lower surface side of the main body 81, and the main body 81 is attracted to the leg mounting portion 62 by being compressed.

  According to the present embodiment described above, the attachment portion 72 of the front fender 70 is attached to the under bracket 60, and further, the front fork 3 and the front fender 70 are disposed on the outside of the attachment portion 72 in the vehicle width direction. Since the elastic member 80 that restricts movement is provided, vibration of the front fender 70 (particularly vibration in the roll direction) can be suppressed. Such a mounting structure is suitable for elongating the front extension part 76 of the front fender 70.

  In particular, since the elastic member 80 is provided outside at least the inner end 51i of the leg portion 50, vibration of the front fender 70 (particularly vibration in the roll direction) can be more effectively suppressed.

  Moreover, in this embodiment, since the front fender 70 has the collar part 78, it can suppress that a water droplet adheres to the upper end part of the leg part 50.

  In the present embodiment, since the elastic member 80 is interposed between the front fork 3 and the front fender 70, the elastic member 80 functions as a damper, and vibration of the front fender 70 can be suppressed.

  In the present embodiment, the elastic member 80 has been described as an example of the restricting unit. However, the elastic member 80 is not limited thereto. For example, the front fender 70 is fastened to any part of the front fork 3 with a fastener such as a spiral. The relative movement may be limited.

  Moreover, in this embodiment, since the elastic member 80 is pinched | interposed into the leg part attaching part 62 and the collar part 78, the vibration of the up-down direction transmitted from the leg part 50 grade | etc., Can be suppressed more effectively.

  In the present embodiment, the protrusion 83 of the elastic member 80 is fitted into the hole 78a of the flange 78, so that the elastic member 80 can be easily positioned.

  Moreover, in this embodiment, since the opening of the upper side of the hole part 62b is obstruct | occluded by the elastic member 80, it can suppress more effectively that a water drop adheres to the upper end part of the leg part 50.

  Further, in the present embodiment, the elastic member 80 abuts on the upper surface so that the under bracket 60 is sandwiched from above and below, and the attachment portion 72 is fastened to the lower surface, so that the front fender 70 is made more rigid. Can be attached.

  In the present embodiment, the thickness of the gap between the leg attachment portion 62 and the flange portion 78 is smaller than the original thickness of the elastic member 80, and the restoring force of the elastic member 80 is applied to the flange portion 78. The vibration of the front fender 70 can be more effectively suppressed.

  In the present embodiment, the inner tube 51 is attached to the under bracket 60, but the elastic member 80 is disposed on the under bracket 60, so that the sliding of the outer tube 56 is not hindered by the elastic member 80.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made by those skilled in the art.

  In the above-described embodiment, the motorcycle 1 is described as an example of the saddle riding type vehicle. However, the present invention is not limited to this, and may be, for example, an automobile tricycle.

1 is a left side view of a motorcycle according to an embodiment of a saddle riding type vehicle of the present invention. Fig. 3 is a left side view of a front fork and a front fender provided in the motorcycle. FIG. 3 is an exploded perspective view of a front fork and a front fender provided in the motorcycle. It is sectional drawing of the IV-IV line shown in FIG. It is a front view of the said front fender. It is a top view of the said front fender. It is a left view of the said front fender.

Explanation of symbols

  1 motorcycle (an example of a saddle type vehicle), 2 body frame, 2a head pipe, 2b main pipe, 2c seat rail, 2d vertical frame, 3 front fork, 4 handle, 5 front wheel, 6 engine, 7 seat, 8 Rear arm, 9 Rear wheel, 40 Steering shaft, 50 Leg part, 51 Inner tube, 51i end, 56 Outer tube, 56a Shaft support part, 56b Fender attaching part, 56c Caliper attaching part, 58 Lid member, 59 Spring, 60 Under bracket 62 Leg mounting portion, 62a Bolt insertion hole, 62b Hole portion, 64 Shaft mounting portion, 66 Fender mounting portion, 70 Front fender (front half front fender), 72 Mounting portion, 72a Bolt insertion hole, 74 Outer covering portion, 76 Forward extension, 78庇 part, 78a hole part, 79 second half side front fender, 80 elastic member (an example of limiting means), 81 body part, 83 protrusion part, 85a recessed part, 91 bolt.

Claims (10)

A steering shaft rotatably supported by the head pipe,
A pair of legs that rotatably support the front wheel at the lower end, and an under bracket to which the lower end of the steering shaft and the upper end of the leg are attached;
Including a front fork,
A front fender attached to the under bracket and covering the front wheel;
Limiting means for limiting relative movement between the front fork and the front fender outside the part to which the front fender is attached in the vehicle width direction;
A straddle-type vehicle. The restricting means restricts relative movement between the front fork and the front fender at least outside the inner end of the leg portion;
The straddle-type vehicle according to claim 1. The front fender has a flange that covers the upper end of the leg.
The straddle-type vehicle according to claim 1. The restricting means is an elastic member interposed between the front fork and the front fender.
The straddle-type vehicle according to claim 1. The elastic member is sandwiched between the under bracket and a flange that covers the upper end of the leg portion of the front fender.
The straddle-type vehicle according to claim 4. The flange is formed with a hole,
The elastic member has a protrusion that fits into the hole.
The straddle-type vehicle according to claim 5. The under bracket is formed with a hole into which the upper end of the leg is inserted,
The elastic member closes the opening on the upper side of the hole;
The straddle-type vehicle according to claim 4. The front fender is fastened to the lower surface of the under bracket.
The straddle-type vehicle according to claim 5. When the front fender is fastened to the under bracket, the thickness of the gap between the front fender and the under bracket is smaller than the original thickness of the elastic member disposed in the gap.
The straddle-type vehicle according to claim 4. The leg portion is configured as a suspension device in which an outer tube supporting the front wheel and an inner tube attached to the under bracket can swing relatively.
The straddle-type vehicle according to claim 1.

Images