JPS59167383A - Protective structure of frame for motorcycle, etc. - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a frame protection structure for a motorcycle or a tricycle (hereinafter referred to as a motorcycle or the like).

In general, motorcycles (1) are equipped with a movable fender that allows the front fender to be steered left and right along with the front wheel, and the metal body frame is located bare behind the movable fender. Therefore, the mud thrown up by the front wheels adheres to the aircraft frame, and if the mud is particularly oxidizing, it tends to accelerate the rusting of the aircraft frame and shorten its lifespan.

In particular, in the structure in which the rear end of the movable fender is kept at a position above the rearmost end of the front wheel and does not extend downward, in order to reduce the rotation space of the rear end of the fender,
We can expect Meriso 1 to be able to increase the riding space by moving the rear footrest forward to account for the reduced space, but since the fender is not structured to cover the entire rear of the front wheels, the muddy aircraft mentioned above Increases the tendency to stick to the frame and shortens frame life.

An object of the present invention is to provide a frame protection structure for a motorcycle having a movable fender structure as described above, which protects the body frame from mud thrown up by the front wheel and extends the life of the frame. be.

(2) The present invention that achieves the above object includes a front wheel supported on a head pipe so as to be steerable, a front fender that covers the upper part of the front wheel and is intended to be steered together with the front wheel, and a front fender that extends downward from the head pipe and extends behind the front wheel. In a motorcycle or the like equipped with a body frame that is located at It is characterized by being located above the tangent line drawn to pass through.

The present invention will be explained below with reference to embodiments shown in the drawings.

In the figure, 1 is a fuselage frame, 2 is a head pipe fixed to the front teeth of the fuselage frame 1, and 3 is a steering shaft rotatably supported by the head pipe 2. A front fork 4 is fixed to the lower end of the steering shaft 3, and a link 5 is attached to the front fork 4.
A front wheel 7 is supported via a shock absorber 6. Further, a front fender 8 made of resin is fixed to the steering shaft 3, and is configured to integrally rotate left and right.

(3) The rear end 8a of the front fender 8 is kept at a position above the rearmost end of the front wheel 7 and does not extend downward. In addition, the front fender 8 is provided with a projecting wall 8b at a position in front of the bearing portion of the steering shaft 3, and this projecting wall 8a prevents rainwater, etc. that is about to enter along the two sides of the front fender 8'' from the steering shaft. This prevents it from entering the bearings, etc. in No. 3.

On the other hand, on the front side of the fuselage frame 1, a protective plate 9 made of resin is provided so as to correspond to the lower open part of the rear end 8a of the front fender.
is installed. This protection plate 9 is formed in a generally rectangular shape when viewed from the side, and its front upper end is inserted into a downward pin 11 fixed to the fuselage frame 1, and its middle part is a support that is hung on the upper surface of the fuselage frame 1. It is fixed to the plate 12 by a port 13, and the rear part is connected to a horizontal vibe 14 through a notch.
is inserted into.

The -1 end of the protection plate 9 extends to one side of the tangent T to the outer periphery of the front wheel 7 passing through the rear end 8a of the front fender 8. The tangent line passing through this front fender rear end 8a is
As shown in the figure T, the front fender (4) extends upward from the outer periphery of the front wheel 7 below the rear end 8a of the fender, and extends downward from the outer periphery of the two front wheels 7 from the rear end 8a. The upper end of the protective plate 9 according to the present invention is connected to the tangent line T of the former.
It extends further upwards. With this positional relationship, the muddy water etc. splashed backward by the front wheels 7 collides with the protection plate 9 and flows downward, and it goes over the upper end of the protection plate 9 and hits the rear metal aircraft. Frame 1 will not get wet. For this reason, muddy water etc.
It becomes difficult to adhere to.

Further, the protection plate 9 has grooves 9a, 9a on both sides of the inner surface that covers the aircraft body frame 1, and the upper surface on the opening side is covered with a leg shield 23.

In these grooves 9a, a wire harness 15, a throttle wire 16. It guides the wires such as the brake wire 17 and regulates the routing of the wires, and also prevents the wires from getting caught between the fuselage frame 1 (5) when installing the protection plate 9. I try not to interfere with work.

The resin footrest 18 provided on the top surface of the aircraft frame 1 is
It is fixed to left and right metal brackets 19 by bolts 20. A side cover 21 made of resin is clamped and fixed between the bracket 19 and the footrest I8, and the upper side of the side cover 21 is regulated by the inner surface of the edge 18a of the footrest I8, and the rib 21a at the lower end is fixed. It is regulated and positioned by the outer surface of the bracket 19.

22 and 23 are resin leg shields that respectively cover the front and rear sides of the front part of the aircraft.

The present invention has two components: a front wheel supported on a head pipe so that it can be steered; a front fender that covers one of the front wheels and is intended to be steered together with the front wheels; and a front fender that extends downward from the head pipe and extends behind the front wheels. In a motorcycle or the like equipped with a fuselage frame, the front surface of the fuselage frame is covered with a protection plate, and the upper end of the protection plate is connected to the front fender (6).
) Since the structure is such that it is located above the tangent line drawn from the outer circumference of the front wheel on the lower side of the rear end to pass through the rear end of the front fender, muddy water etc. splashed by the front wheel is prevented from adhering to the fuselage frame by the protection plate. This can extend the lifespan of the aircraft frame.

[Brief explanation of drawings]

FIG. 1 is a side view showing the main part of the front part of a scooter having a front fender structure according to the present invention, FIG. 2 is a sectional view taken along the line A-A in FIG. 1, and FIG. It is an arrow sectional view. 1. Airframe frame, 2. Head pipe, 4.
Front fork, 7.. Front wheel, 8.. Front fender, 8a.. Rear end of front fender, 9.. Protective plate, 18.. Footrest plate, T.. Tangent line. Agent: Patent Attorney Makoto Ogawa − Patent Attorney: Ken Noguchi Patent Attorney: Kazuhiko Saishita

Claims (1)

[Claims] An automatic vehicle comprising: a front wheel supported on a head pipe so as to be steerable; a front fender that covers above the front wheel and is intended to be steered together with the front wheel; and a fuselage frame extending downward from the head pipe and positioned behind the front wheel. In a motorcycle, etc., the front surface of the body frame is covered with a protection plate, and the upper end of the protection plate is located above a tangent line drawn from the outer periphery of the front wheel below the rear end of the front fender and passing through the rear end of the front fender. Frame protection structure for motorcycles, etc.