JP3748470B2 - Rear fender mounting structure for motorcycles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rear fender mounting structure for a motorcycle.
[0002]
[Prior art]
In Japanese Utility Model No. 4-37033, a rear fender supported on a rear part of a vehicle body frame extending rearward of a driver's seat, a grab rail provided on a side part of the rear fender, and a rear fender are provided. A motorcycle including a passenger seat and a backrest provided behind the passenger seat is shown.
[0003]
This rear fender is sandwiched between the rear part of the vehicle body frame arranged on the inside and the grab rail arranged on the outside, and the bolt passed through the grab rail is passed through the hole provided in the side part of the rear fender so that the tip side is By fastening to a nut that is pre-welded to the rear part of the frame, it is supported to the rear part of the body frame.
[0004]
[Problems to be solved by the invention]
By the way, there is a case where a body frame is arranged outside the rear fender so that a part of the body frame is made to appear. In this type, a sub-frame separate from the body frame is arranged inside the rear fender. It is necessary to support lights and mudguards.
[0005]
However, if this is done, the subframe, rear fender, and grab rail are supported on the vehicle body frame with a common bolt.When the rear fender is assembled, the subframe, rear fender, and grab rail are positioned and held on the vehicle body frame. Must be concluded while.
[0006]
Therefore, since the assembly work becomes difficult, it is desired to facilitate the assembly work, and the structure of the fastening portion becomes relatively complicated, so that the structure must be simplified.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, a motorcycle rear fender mounting structure according to the present invention includes a rear fender supported on a rear portion of a vehicle body frame provided in a pair on the left and right sides, and a pair of left and right sides of the rear fender. In a motorcycle having a grab rail, a seat disposed above the rear fender, and a backrest disposed behind the seat, the left and right sides of the rear part of the vehicle body frame are disposed between the rear fender and the grab rail. A subframe for holding the taillight at the rear end is arranged inside the rear fender, and the subframe is pre- connected to the left and right sides of the rear fender. The body and the grab rail are fastened to the rear part of the body frame.
[0008]
In this case, the small assembly collar provided integrally with the left and right sub-frames can be fitted into the mounting holes provided on the left and right sides of the rear fender, and can be fastened together with the bolts passed through the small assembly collar. .
[0009]
In addition, a hook that protrudes upward is provided at the front part of the rear fender, and this hook is locked to a cross pipe provided in the vehicle width direction of the vehicle body frame to fasten the small assembly and the grab rail together to the rear part of the vehicle body frame. You can also.
Further, the small group collar is provided in such a manner that the rear fender and subframe small group is swung upward with the hook and cross pipe engaging portion as a fulcrum, and a plurality of the small group collars are formed as one set. Corresponding to the mounting holes provided on the left and right side portions of the body frame, and connecting bolts integrated in advance so as to correspond to the small assembly collars. Insert the grab rails through the mounting holes of the frame, and extend the grab rails to the outside of the left and right body frames, respectively, and insert the ends of the connecting bolts into the mounting holes formed in advance in the grab rails corresponding to the mounting holes of the body frame. The part which protrudes from the attachment hole of a vehicle body frame by a part can also be inserted, and it can also fix with a nut.
[0010]
【The invention's effect】
In the present invention, since the sub-frame previously arranged inside the rear fender is assembled into the rear fender, when the rear fender is attached to the body frame, the sub-assembly and the grab rail are simply tightened while being positioned with respect to the body frame. Well, the installation work is easy despite the increase in subframes.
[0011]
Furthermore, if the subframe and the rear fender are assembled by fitting the small assembly collar provided in the subframe into the hole provided in the rear fender, the small assembly and the grab rail are connected to the vehicle body frame by the bolts passed through the small assembly collar. Since it can be fastened together, the structure of the fastening portion can be simplified.
[0012]
Also, if the hook provided on the front part of the rear fender is locked above the cross pipe, the rear fender and subframe sub-assembly is swung upward using this engaging part as a fulcrum, and the sub-assembly collar is mounted on the body frame. The mounting holes provided on the left and right sides of the frame can be easily aligned. By inserting connecting bolts into the small assembly collar and the mounting hole of the vehicle body frame, the small assembly can be easily attached to the vehicle body frame. Can be supported.
[0013]
In addition, in this state, the grab rails are respectively arranged on the outer sides of the left and right vehicle body frames, and the vehicle body is attached to the mounting holes formed in advance in the grab rails corresponding to the mounting holes of the vehicle body frame at the ends of the connecting bolts. If the part protruding from the mounting hole of the frame is inserted and fixed with a nut, the above-mentioned tightening can be done, and the nut fastening work at this time can be fastened without holding the connecting bolt side by using the connecting bolt become. Accordingly, the entire co-fastening operation is facilitated.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention configured as a custom motorcycle will be described based on the drawings. FIG. 1 is an enlarged cross-sectional view of a rear fender mounting portion, FIG. 2 is an assembly view showing how to mount a rear fender, FIG. 3 is a left side view of the entire motorcycle, and FIG. 4 is a right side view thereof.
[0015]
First, as shown in FIGS. 3 and 4, in this motorcycle, the upper portion of the front fork 2 that supports the front wheel 1 is rotatably supported by the head pipe 5 via the bottom bridge 3 and the top bridge 4. A handle bar 6 is attached from the top bridge 4 and the position of the grip 7 is arranged rearward.
[0016]
The main frame 10 with the head pipe 5 attached to the front end portion extends in the front-rear direction along the center of the vehicle body, and a pair of left and right down frames 11 extends obliquely downward from the left and right sides of the head pipe 5, and the lower end portion is substantially the same. It continues to the lower frame 12 extending horizontally in the front-rear direction.
[0017]
From the rear end of the main frame 10, a pair of left and right pivot frames 13 extend downward substantially parallel to the down frame 11 in a side view, and the lower end thereof is obliquely upward and rearward from the rear end of the lower frame 12. The rear stay 14 is connected to the lower portion of the rear stay 14.
[0018]
Further, a pair of left and right seat rails 15 extend rearward substantially horizontally from the rear end portion of the main frame 10, and the rear portion is connected to the upper portions of the pair of left and right rear stays 14.
[0019]
The rear stay 14 bends in the vicinity of the connecting portion of the seat rail 15 and extends substantially horizontally rearward, its outer surface is covered with a grab rail 16 attached by an attaching portion 17, and its rear end portion is a pair of left and right subframes to be described later. 18 and a rear winker 19 is supported at the rear end of the grab rail 16.
[0020]
The main frame 10, the down frame 11, the lower frame 12, the pivot frame 13, the seat rail 15 and the rear stay 14 constitute a vehicle body frame, of which the main frame 10, the down frame 11, the lower frame 12, The seat rail 15 forms a credor-type frame structure, and the engine 20 is supported here.
[0021]
The engine 20 is sucked from the air cleaner in the side cover 22 through the carburetor 21 and exhausted from the exhaust pipe 23 and the muffler 24.
[0022]
Reference numeral 25 indicates a crank case, 26 is a starter motor, the rear wheel 29 coaxial with the sprocket 30 is driven via a chain 28 from the drive gear 27.
[0023]
The rear wheel 29 is supported by the rear end portion of the rear arm 31, and the rear arm 31 is pivotally attached to the pivot portion 32 provided at the middle portion of the pivot frame 13 so as to be swingable in the vertical direction. A shock absorber 33 is attached between the rear portion and the upper portion of the rear stay 14.
[0024]
A fuel tank 34 is supported on the main frame 10, and various indicator and meter display portions 35 are provided on the front surface of the upper surface of the main frame 10. A driver seat 36 is mounted on the seat rail 15 behind the fuel tank 34. Is supported.
[0025]
A passenger's seat 37 is supported on the rear fender 41 behind the driver's seat 36, and a backrest 39 is disposed at the rear of the passenger's seat 37 with its backrest support member 40 supported by the grab rail 16. ing.
[0026]
A taillight 42 and a mudguard 43 are supported and attached to the rear end of the rear fender 41 by the subframe 18.
[0027]
Reference numeral 45 denotes a front step, 46 denotes a brake pedal, and 47 denotes a shift pedal. These are provided at positions corresponding to the front of the lower part of the engine 20 and can take a custom motorcycle-like riding posture in which the driver throws his feet forward. It is like that.
[0028]
Reference numeral 48 is a side stand, and 49 is a rear step. Further, 50 is a wheel made of a light alloy, 51 is a brake disk, 52 is a brake caliper, 53 is a front fender, 54 is a headlight, 55 is a front blinker, 56 is a horn, and 57 is a cylinder upper side. It is a front side cover covering from the side.
[0029]
Next, details of the rear fender mounting structure will be described. As apparent from FIG. 1 and FIG. 2, two mounting holes 60 are formed through the side surface of the rear fender 41 at an appropriate interval in the front-rear direction, and a cylindrical anti-vibration rubber 61 is fitted to each of the mounting holes. It has been.
[0030]
The subframe 18 extends rearward in pairs on the inner left and right sides of the rear fender, and its rear part is connected in a substantially U shape. The pipe part 18a that supports the taillight 42 at the rear end part, and the left and right pipes The bracket 62 is welded at one end to the outer peripheral surface of each front end portion of the portion 18a. The bracket 62 is attached substantially parallel to the side surface of the rear fender 41.
[0031]
A pair of mounting holes 63 are formed in the bracket 62 corresponding to each mounting hole 60 at the front and rear, and a small set collar 64 is attached to each periphery by welding.
[0032]
By fitting the small assembly collar 64 into the hole 65 formed in the central portion of the vibration-proof rubber 61, the subframe 18 is assembled into the rear fender 41 and integrated into a small assembly.
[0033]
The two bolts 66 inserted into each of the small set collars 64 are passed through a common connection plate 67 so that they are integrated in advance as a set to form a connection bolt.
[0034]
A rear portion of the rear stay 14 is disposed on the outer side of the rear fender 41, and a mounting hole 68 penetrating in the transverse direction is formed at a position corresponding to each mounting hole 60, and a flanged collar 69 is mounted therethrough. Yes.
[0035]
The front end side of the bolt 66 projecting outward from the rear fender 41 passes through the flanged collar 69, and the front end threaded portion 70 passes through a mounting hole 72 formed in the side surface 71 of the grab rail 16. The nut 73 is fastened from the outside.
[0036]
The grab rail 16 has a substantially U-shaped cross section and covers the rear portion of the rear stay 14 from the outside by a side surface 71, an upper surface 74 and a bottom surface 75. The rear stay 14 is an example of the rear portion of the vehicle body frame in the present invention.
[0037]
The bolt 66 and the nut 73 form the fastening portion 17 of the grab rail 16, but the relationship between the bolt and the nut is reversed, and the bolt is inserted into the vehicle body from the outside of the grab rail 16 to the bracket 62. It can also be fastened to a pre-fixed nut.
[0038]
Further, the mounting hole 60 of the rear fender 41, the collar 64 for the small assembly, the bolt 66, the mounting hole 68 of the rear stay 14, the collar 69 with the flange, the mounting hole 72 of the grab rail 16, and the nut 73 are provided in correspondence with each other. However, it may be three or more.
[0039]
As apparent from FIG. 2, a substantially L-shaped hook 77 is provided on the upper front end of the rear fender 41 so as to protrude upward, and is engaged with a cross pipe 78 spanned between the left and right rear stays 14. It has become.
[0040]
Next, the operation of this embodiment will be described. In FIG. 2, first, the subframe 18 is assembled into the rear fender 41 by fitting the small assembly collar 64 into the hole 65 formed in the central portion of the vibration-proof rubber 61.
[0041]
The rear fender assembly is inserted between the left and right rear stays 14 from above, and the hook 77 is locked to the cross pipe 78 to support the front portion of the rear fender assembly on the rear stay 14 side.
[0042]
Since the rear fender subassembly can be swung upward with the locking portion as a fulcrum, the subassembly collar 64 and the flanged collar 69 can be connected to the relatively large and heavy rear fender subassembly. The alignment work for matching is extremely simple.
[0043]
Subsequently, each bolt 66 constituting the connecting bolt is inserted into the aligned small assembly collar 64 and flanged collar 69 from the mounting hole 63 of the bracket 62, and the tip screw portion 70 is outward from the flanged collar 69. When projecting, the rear fender assembly is easily supported on the rear stay 14 side.
[0044]
Thereafter, the grab rail 16 is placed along the outside of the rear stay 14, the tip end side of the tip screw part 70 is inserted into the mounting hole 72, and a nut 73 is fastened to the tip of the tip screw part 70 protruding from the grab rail 16.
[0045]
As a result, the grab rail 16, the rear fender 41, and the subframe 18 are fastened together with the bolts 66 and the nuts 73 that are common to the rear stay 14, so that the rear fender 41 can be easily attached to the rear stay 14 with vibration isolation.
[0046]
Therefore, the rear fender 41 and the sub-frame 18 are assembled into a small amount, and the small assembly is attached to the rear stay 14 with the bolt 66, and then the grab rail 16 is attached to the bolt 66, and the members to be fastened can be separately and sequentially attached. Therefore, the mounting work becomes easy and the mounting structure becomes simple.
[0047]
In addition, even though the subframe 18 is disposed inside the rear fender 41, the subframe 18 can be assembled with the rear fender 41 in advance, so that the grab rail 16, the rear fender 41, and the subframe 18 are positioned respectively. Since it is not necessary to hold them together at the same time, the mounting work is also facilitated in this respect.
[0048]
In addition, since the bolts 66 are supported by the connecting plate 67 to form the connecting bolts, it is not necessary to hold the bolts 66 when the nut 73 is fastened, and the fastening work is further facilitated.
[0049]
Furthermore, since the small set collar 64 is used as the small group connecting member, the bolt 66 can be passed through the small set collar 64. Therefore, the small set collar 64 is not only used for passing the bolt 66 but also for the small set. Compared with the case where the small group collar 64 and the small group connection member are separately provided, the small group connection structure can be simplified and the number of parts can be reduced.
[0050]
In addition, this invention is not limited to the said embodiment, A various deformation | transformation is possible. For example, the rear portion of the vehicle body frame may replace the rear end portion of the rear stay and extend the seat rail rearward, and the rear portion may be a support portion of the rear fender 41.
[Brief description of the drawings]
[Fig. 1] Side view of the main part of the body frame [Fig. 2] Enlarged view of the main part [Fig. 3] Left side view of the entire motorcycle [Fig.
10: Main frame, 14: Rear stay (rear body frame), 15: Seat rail, 16: Grab rail, 18: Sub frame, 41: Rear fender, 64: Collar for small assembly, 66: Bolt (connection bolt), 69: Flange With collar, 73: Nut

Claims (4)

A rear fender supported on the rear part of the body frame provided in a pair on the left and right sides, a pair of grab rails provided on the left and right sides of the rear fender, a seat provided above the rear fender, and a rear of the seat In a motorcycle with a backrest
The left and right sides of the rear part of the vehicle body frame are arranged between the rear fender and the grab rail,
Inside the rear fender is a pair of left and right, and a subframe for holding the taillight at the rear end,
A structure for mounting a rear fender of a motorcycle, wherein the sub-frame is connected in advance to the left and right sides of the rear fender and is assembled into a small assembly, and the assembly and the grab rail are fastened together to the rear portion of the vehicle body frame.   The small set of the rear fender and the subframe is assembled by fitting the small set collar integrally provided on the left and right subframes into the mounting holes provided on the left and right sides of the rear fender, and the joint fastening is performed. The rear fender mounting structure for a motorcycle according to claim 1, wherein the mounting is performed by a bolt passed through the motorcycle. A hook which projects upwardly to the front of the rear fender is provided, it engages the hook cross pipe disposed in the vehicle width direction of the vehicle body frame, and fastened the subassembly body and the grab rail to the vehicle body frame rear portion The structure for mounting a rear fender for a motorcycle according to claim 2. The small group collar is provided by forming a plurality of the small group collars by swinging the small group of the rear fender and the subframe upward with the engaging portion of the hook and the cross pipe as a fulcrum. Corresponding to the mounting holes provided on the left and right sides of the vehicle body frame. Insert the grab rails on the outer sides of the left and right body frames, and attach them to the mounting holes that are formed in advance in the grab rails corresponding to the mounting holes of the body frame. 4. The rear fender mounting structure for a motorcycle according to claim 3, wherein a portion protruding from the mounting hole is inserted and fixed with a nut.

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