JPS6092177A - Mounting structure for front covers of motorcycles, tricycles, 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 front cover mounting structure for a vehicle such as a motorcycle or a tricycle.

Some so-called starter type motorcycles and tricycles are equipped with a front cover in front of a front wheel steering shaft to cover the front part of the vehicle body, and an inner cover on the rear side of the front cover.

By the way, in such a scooter type vehicle, if the lower half of the front cover is integrally molded so that it bulges forward so that the lower half of the front cover doubles as a front fender that covers the front wheels on the road, the number of parts and mounting members can be reduced. However, manufacturing errors and assembly errors will inevitably accumulate at the joint between the front cover and inner cover, resulting in gaps in the joint and problems with the connection with the vehicle body. Parts may come off, and precision control during assembly becomes complicated.

The present invention has been made in view of the above circumstances, and its object is that even if the front fender part is integrally formed with the front cover, the joining part with the inner cover, which has a substantially parabolic side surface, It is possible to absorb all errors in the process, thereby improving assembly efficiency and simplifying accuracy control.Furthermore, it is possible to reduce the number of support members to the minimum necessary without having to separately support both parts on the vehicle frame side with a large number of support members. To provide a mounting structure for a front cover of a motorcycle, tricycle, etc., which can be connected and supported to the vehicle body frame side, thereby rationally achieving further improvement in assemblability.

In order to achieve such an object, the present invention has a front cover that is integrally molded with resin so as to bulge forward between the lower part of the handlebar and the front part of the floor, and that both side edges of the front cover have substantially parabolic side surfaces facing forward. On the other hand, the mating edges of the inner cover are also formed in a substantially parabolic curve shape on the sides that match the lines on both sides of the front cover, and the two side edges forming the parabolic curve shape are engaged with each other to join 1. Furthermore, the main feature is that both the upper and lower ends of the front cover are connected to the vehicle body frame.

A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

Figure 1 is a side view of a motorcycle to which the present invention is applied;
The figure is a transparent side view of the main parts, Fig. 3 is a sectional view along the line ■-■, Fig. 4 is an enlarged cross-sectional view of the main parts, and Fig. 5 is the front cover, inner cover, floor, and body frame. FIG. 2 is an exploded perspective view of a scooter-type motorcycle, but it may of course be a tricycle.

At the front of the motorcycle 1, there is a front cover 20 that bulges out forward, and an inner cover 30 that is joined to this from the rear.
left and right front forks 3, 3 supporting the front wheel 2; a handle stem 5, which is a steering shaft connected to the left and right front forks 3 via a bridge 4 and having a handle 6 fixed to its upper end;
The front part 8a of the down pipe 8 constituting the vehicle body frame and the head pipe 7, which is provided at the front end thereof and through which the handle stem 5 is inserted and supported, are covered by a front cover 2o and an inner cover 30. This front cover 20
A floor 40 is connected to the rear lower end of the inner cover 30, and the floor 40 covers the rear part 8b of the down pipe 8 located at the bottom of the vehicle body. A rear pipe 9 connected to the rear end of the pipe 8 is pivotally supported at the front lower end of the rear pipe 9, and the rear wheel 1
The upper part of the shock absorber 12, which is installed between the power unit 11 and the rear pipe 9, is covered with a carrier cover 50.

Note that a seat 13 is provided above the rear cover 50.

The front cover 20id is formed to bulge forward in a streamlined manner, the lower half of which also serves as a front fender portion 21 that covers the upper part of the front wheel 2, and the headlight housing 22 that opens toward the front bulges out in the upper part. The front cover 20 is made of synthetic resin and is integrally molded with the front cover 20. be done. A front cover 14 is attached to the front of the most bulging portion of the front cover 20.

Anenuki P inner cover n is #6 flat 11 蔗 '21 'I
I is formed to bulge forward greatly and form a leg shield with the protruding parts on both sides of the front cover 20, and the intermediate part 32 of these is a front part 8a which is bent upward in front of the front forks 3, 3 and the down pipe 8. It forms a housing portion that bulges upwardly and rearward to cover the head pipe 7 and the like from the rear and both sides, and has both side portions 31 and 31.
The inch cover 30 is also made of synthetic resin. This inner cover 3
The lower half portions of both side portions 31.31 that bulge out to the front of the seat 13 also serve as foot rest portions 33.33 on which an occupant seated on the seat 13 can place his or her feet in a state where they are thrown forward.

The floor 40 includes a front cover 20 and a rear cover 50.
The front part of the floor 40 has an extension part 41, 41 on both sides and a recess part 42 in the center part to match the shape of the lower part of the inch cover 30. Karu floor 40 is also mizuiri with heart 1'17 breakout picture? Bolts 83 are connected to both sides of floor brackets 81 and 82, which are fixed to the rear part 8b of the down pipe 8 and extend in the width direction, at the top and rear of the floor.

The front cover 20 and the inner cover 30 are engaged and connected at three locations on the left and right sides of the front cover 20 and the inner cover 30, as shown in FIG.
This is done at a total of 4 locations on each side of D. The structure of each connection point is the same.

That is, locking bosses 36 projecting forward as shown in FIGS. 3 and 4 are integrally molded on the edges of both side portions 31 and 31 of the inch cover 30 at each locking connection point A and D. A bolt insertion hole 37 is formed in the boss 36, and a bolt insertion hole 37 is formed in the boss 36.
A female tapered portion 38 is formed at the tip.

On the other hand, the front cover 20 facing each locking boss 36...
The locking rod 29 is integrally molded inside the side edges 26, 26 of the locking rod 29 through the protrusions 28, and a screw hole 29a' from the rear is formed in the rod 29.

In this way, when the front cover 20 and the inner cover 30 are connected, the rear ends of the locking rods 29 are engaged with the female tapered portions 38 of the locking bosses 36 on both the left and right sides. ,
Due to the centering action of the tapered portion 38, the Shirorad 29 is aligned with the boss 36.
It is positioned and locked in the same manner as the bolt insertion hole 37, and furthermore, the washer 67... is fully interposed and the two are connected by bolts 68...

In this way, the front cover 20 can be
Since the inner cover 30 and the inner cover 30 are combined, an error in the parabolic curved portion where the two join together is absorbed by the amount of deformation of the resin. Therefore, even if the front fender part 21 is integrally provided with the front cover 20 and the mating part with the inner cover 30 has a substantially parabolic curved side surface, the two can be perfectly connected.

Further, the lower part of the front cover 20 is connected and supported to the vehicle body frame as shown in FIG. 5 and FIG. 6, which shows an enlarged longitudinal section of the main part thereof.

First, a base plate 60 is fixed by welding in front of the bent portion 8C of the down pipe 8, and a U-band 61 fixed by welding to the center part of the bracket Hygro 3 from the front is bolted 62°62 to this plate 60. This bracket vibro 3 extends in the width direction, is bent at the center so that both ends face forward, and both ends are provided with mounting portions 64 and 64 that are crushed and formed flat.
The lower surface of ゜64 is provided with an oak ゜65.65 as shown in Fig. 6.

In this way, the mounting portions 64 of the bracket pigs 63 are attached on both the left and right sides.
First, the front fender part 2 of the front cover 20 is placed on the top surface.
Layer the side rear edge 27 of 1 and place the leg shield 30 on top of this.
The recessed step 35 formed on the rear edge 34 of the footrest 33 is superimposed, and the recessed step 44 formed on the front edge of the extension 41 of the floor 40 is placed on top of this, and the bolt 66 is inserted into the recess from above. It is inserted into the stepped portion 44 and fastened to the nut 65.

Because of this common bond, the down pie stiffness,
It is a material that can provide strength and also contributes to simplifying the assembly work.

The upper part of the front cover 20 is connected and supported to the vehicle body frame as shown in FIG. 7, which is an exploded perspective view of the front cover, headlight, and vehicle body frame, and FIG. 8, which is an enlarged cross-sectional view of the main parts thereof.

First, the headlight housing 22, which is provided in a bulging manner on the upper part of the front cover 20, is folded at the front part that forms the parallel side walls 23, 23 that stand upward, the substantially horizontal upper wall 24, and the lower wall. It consists of a flange piece 25 which is curved 25a and whose rear part is inclined downward, and the housing 22 passes through the housing 22 from front to back. Attachment holes 23a, 23a are formed in both side walls 23.23 of this housing 22.

Then, an upper base plate 70 is fixed to the front of the intermediate part of the head pipe 7 by welding, and the central part of the bracket plate 72 is bolted to this plate 70 from the front 71.
71. This bracket plate 72 has two mounting pieces 73.73 on the left and right facing upward in the front, and both mounting pieces 73.7
Collars 74 and 74 are welded to the tip of 3 in the lateral direction.

On the other hand, mounting bosses 92.92 are protruded from both side walls 91.91 of the headlight 90, and a nut 93 is provided inside the boss 92.

In this way, the mounting pieces 7 of the bracket grate 72 on both the left and right sides
3 faces into the headlight housing 22, and engages the 14-karat gold collar provided on the mounting piece 13 in the mounting hole 23a provided in the side wall 23, and then inserts a washer 75f and attaches the bolt 16 to the mounting piece 73. housing 22 and headlight 9
It is commonly connected to 0 and supported.

Since they are commonly connected in this way, the bracket plate door 2 that supports the headlight 90 can also support the upper part of the front cover 20 at the same time, which contributes to reducing the number of supporting members and simplifying the assembly work.

In FIG. 2, reference numeral 15 denotes a mantle guard disposed inside the housing part 32 of the inner cover 3o, and this mudguard 15 is attached to a handle stopper plate 77 protruding forward from the lower end of the head pipe 7 at its middle part 15a. After being bolted together T8, the rear end 15b is fitted and locked 69 to a base plate 60 provided on the down pipe 8.

Further, the front part of the mudguard 15 is provided with a hook-shaped clamper 16 extending upward, and the clamper 16 includes a cord 95 of the headlight 90, a cord 18 of the horn 11, a front brake cable (not shown), and a speed control cable. A harness such as a meter cable is carried.

As is clear from the above description, the present invention includes a front cover disposed in front of the front wheel steering shaft connected to the handle, an inner cover disposed on the rear side of the front cover, and the inner cover. In vehicles such as motorcycles and tricycles that have a floor at the bottom of the front cover, a synthetic resin front cover that is integrated with the front fender part in the lower half, and a synthetic resin inner cover that is joined to this from the rear. The two edges of the front cover, which have a substantially parabolic curved side surface, are locked and connected to each other, and both the upper and lower ends of the front cover are connected to the vehicle body frame, so the elasticity of the front cover at the parabolic curved joint is reduced. It is possible to connect the front cover to the vehicle frame while absorbing errors due to deformation, making assembly easier, simplifying accuracy control, and furthermore, connecting to the vehicle body frame with only the minimum number of supporting members required. Support can be provided, and therefore, ease of assembly can be rationally improved.

[Brief explanation of drawings]

Figure 1 is a side view of the motorcycle, Figure 2 is a perspective side view of the front of the vehicle body, Figure 3 is a sectional view taken along the line ■-■ in Figure 2, and Figure 4 is an enlarged cross-sectional view of the locking joint. , Figure 5 shows the front cover.
An exploded perspective view of the inner cover, floor and body frame,
FIG. 6 is an enlarged vertical cross-sectional view of the common joint, FIG. 7 is an exploded perspective view of the front cover, headlight, and body frame, and FIG. 8 is an enlarged cross-sectional view of the common joint. In the drawings, 1 is a motorcycle, 2 is a front wheel, 5 is a steering shaft, 7 is a head pipe constituting the body frame, 8 is a down pipe, 8c is a bent portion thereof, 20 is a front cover, 21
22 is the same headlight housing,
26 is the same side edge, 29 is the locking rod, 30 is the inner cover, 31 is the side part, 33 is the foot rest part, 36 is the locking boss, 38 is the female taper part, 40 is the floor, 63 is the bracket The pipe, 64 is its mounting portion, 72 is a bracket plate), 73u is its mounting piece, and 90 is a headlight. Patent applicant Honda Motor Co., Ltd. 4 representatives Patent attorney 1) Part 1 Patent attorney Kunihiko Ohashi Patent attorney Yu Koyama

Claims (1)

[Claims] A motorcycle comprising: a front cover disposed in front of a front wheel steering shaft connected to a handle; an inner cover disposed on the rear side of the front cup; and a floor at the bottom of the inner cup; In vehicles such as three-wheeled vehicles, the above-mentioned front canopy is made to bulge forward between the lower part of the steering wheel and the front part of the floor and is integrally molded with resin, and the side surface facing forward along both sides of the front door. The inner cover is formed into a substantially parabolic curve shape, and mating edges that match both side edges of the parabolic curve shape are formed on the inner cover, and the inner cover <-
and the front cover are lockingly connected to each other at both side edges forming a substantially parabolic curved side surface, and the front cover is further connected to the main body frame side at both upper and lower ends. Freon -h, z-/7+IT
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