JP4123813B2 - Motorcycle seat mounting structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a seat mounting structure for a motorcycle.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, motorcycles include an underbone vehicle in which a frame extending from a head pipe is obliquely rearward and downward and a fuel tank (fuel tank) is accommodated under a seat in consideration of straddleability (for example, JP-A-10-95376). reference).
As shown in FIG. 6, this type of underbone vehicle has a seat opening / closing hinge c on the front side of the seat a because of the fuel tank b below the seat a, and can easily hold the rear end of the seat. The structure can be opened and closed.
[0003]
However, the hinge parts are relatively large in quantity, and when assembling the seat (when assembling the vehicle body), it is necessary for the operator to assemble the parts for bolt fastening, etc. while supporting the seat with one hand, It was a work load.
Further, the hinge has a floating support structure through an elastic body e such as rubber for absorbing engine vibration. For this reason, when the sheet is opened, there is a case where the elastic body is bent and the backlash of the sheet is generated and the texture is disturbed. Further, there is no design connection between the seat bottom and the seat hinge in terms of appearance quality, and the texture is inferior.
[0004]
[Problems to be solved by the invention]
The present invention has been made paying attention to the above-mentioned problems of the prior art, and has a structure for attaching a seat for a motorcycle that can reduce the work load by making it possible for an operator to fasten the seat without supporting the seat when assembling the seat. The purpose is to provide.
[0005]
[Means for Solving the Problems]
In order to solve the above problems, the present invention attaches a seat to a vehicle body rotatably by connecting the vehicle body side hinge plate attached to the vehicle body side and the seat side hinge plates attached to the seat side with hinge pins. In the seat device for a motorcycle, the seat side hinge plate is provided with a bolt fastening portion for fastening the hinge plate to the seat bottom plate at a center portion thereof, and a pin hole through which the hinge pin is passed on one side end portion. On the other hand, an engagement end that engages with the seat bottom plate is provided at the other end with the bolt fastening portion interposed therebetween, and the engagement end provided at the other end of the seat side hinge plate is engaged by providing the rotation allowing gap in the engagement portion of the seat bottom plate to allow the bolt fastening portion rotated around the relatively upward around the relative said seat bottom plate Having the structure of the seat attachment structure for a motorcycle characterized by and.
In the present invention, it is preferable that the bolt fastening portion at the center of the seat side hinge is fastened to the seat bottom plate via a vibration-proof cushion.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is an explanatory diagram of an overall configuration of a motorcycle according to an embodiment as viewed from the side, FIG. 2 is an explanatory diagram of a rear part including a seat of a motorcycle, FIG. 3 is an explanatory diagram of a configuration of a hinge of a seat, and FIG. The bottom view of the seat, FIG. 5 is an explanatory view of the seat side hinge. In the following description, front / rear and left / right indicate front / rear and front / rear and vehicle width direction left / right.
[0007]
As shown in FIG. 1, the motorcycle according to the embodiment includes a so-called underbone type body frame 1 and body 10 having a high boarding / exiting performance, in which the front of the seat is low to facilitate getting on and off the motorcycle. Have.
[0008]
The vehicle body frame 1 includes a head pipe 3 that supports the front fork 2, left and right main frames 4 that are curved so as to spread outward at an angle from the both sides of the upper part of the head pipe 3, and extend in parallel later, A main frame lower 5 connected to the rear portion of the main frame 4, and a tank rail frame 7 that extends obliquely upward and rearward from the rear portions of the left and right main frames 4 and on which at least a seat 12 positioned on the fuel tank 6 is placed. And a rear frame 8 which is arranged to extend upward and rearward in an arc from the main frame lower 5 and is connected to the tank rail frame 7 in the middle, and supports the upper end of the rear cushion unit 15 at the rear. Yes.
[0009]
The vehicle body 10 has front and rear wheels 11 supported on the front fork 2 at the lower end of the front fork 2 so that the rear wheel 13 swings around a pivot 14 a of the main frame lower 5 and a cushion unit 15. It is suspended from the vehicle body frame 1 via a rear suspension consisting of
An engine 16 of a forward tilt cylinder 16 a is suspended between the front wheel 11 and the rear wheel 13 on the body frame 1. An exhaust system comprising an exhaust pipe 17 extending from the lower side of the engine 16 to the rear muffler 17a is connected to the front side of the cylinder 16a of the engine 16, and a carburetor 18a, an air cleaner 18b and an intake passage are connected to the rear side of the cylinder 16a of the engine 16. An intake system is connected.
Further, the vehicle body cover 19 covers the seat rail frame (tank rail frame) 7 and the rear frame 8 below the seat 12 from the head pipe 3 of the vehicle body frame 1 to form the appearance of the vehicle body.
[0010]
Here, in the embodiment, the vehicle body side hinge plate 20 attached to the vehicle body 10 side and the seat side hinge plate 22 attached to the seat 12 side are connected to each other by a hinge pin 24 so that the seat 12 can be rotated on the vehicle body. The present invention relates to a seat device for a mounted motorcycle.
[0011]
As shown in FIGS. 2 to 5, the seat-side hinge plate 22 is fastened to the seat bottom plate 30 at the center (the body or the seat length direction center when the seat is closed). And a pin hole 28 through which the hinge pin 24 is passed through one end portion (for example, the vehicle body side end portion or the vehicle body front side end portion with the seat closed) 22a. An engagement end portion 34 that engages with the engagement portion 32 of the seat bottom plate 30 is provided on the other end portion (for example, the rear end portion of the vehicle body with the seat closed) across the fastening portion 26. .
[0012]
In detail, as shown in FIGS. 3 to 5, the bottom plate 30 is a rigid resin plate-like member such as plastic that supports the elastic cushion of the seat 12 from the lower surface, and is increasingly in the length and width directions. Reinforcing ribs 38 and hollow ridges or tunnel-like reinforcing ribs 40 along the periphery of the sheet 12 are formed protruding downward. The front end of the reinforcing rib 40 has two openings 40a that are open toward the front in two places on the left and right in the seat width direction. The front end portion of the reinforcing rib 40 including the opening portion 40a becomes the engaging portion 32, and when the seat 12 is assembled, the front end of the engaging end portion 34 is inserted into the engaging portion 32 (from the opening portion 40a). Can be combined.
[0013]
According to the embodiment, the seat side hinge plate 22 is provided with a bolt fastening portion 26 for fastening the hinge plate 22 to the seat bottom plate 30 at the center thereof, and the hinge pin 24 is provided at the vehicle body side end portion 22a. while providing a pin hole 28 through, is provided with the engagement end 34 that engages the seat bottom plate 30 at the other end portion 22b across the bolt fastening portion 2 6, the operator assembling the seat 12 to the vehicle body At this time, the engagement end portion 34 of the other end portion 22b of the seat side hinge plate 22 is engaged with the engagement portion 32 of the seat bottom plate 30 on the vehicle body side hinge plate 20 that has been previously attached to the vehicle body side. Since the sheet 12 can be held on the plates 20 and 22 in the state, it is necessary for the operator to work while holding the sheet 12 body with one hand when fastening the sheet with bolts and nuts. As a result, the work efficiency is improved and the burden on the operator can be reduced.
[0014]
Here, at the lower end of the vehicle body side hinge plate 20, left and right legs are fixed to the front upper outer wall of the fuel tank 6 in the vehicle body cover 19, and the seat is connected to the upper end of the plate 20 via a hinge pin 24. The side hinge plate 22 is rotatably connected.
Further, as shown in FIGS. 3 to 5, the seat-side hinge plate 22 has a substantially Y-shape when viewed from the bottom, and extends toward the front side (rearward when the engaging portion 32 is inserted). A reinforcing standing wall 44 is bent at the periphery other than the joint end portion 34, and the pin hole 28 is formed at the base end portion of the standing wall 44. Reinforcing ribs 46 are formed to bulge from the lower side to the upper side around the engaging end 34. In the seat-side hinge plate 22, a fastening hole 26 a of the bolt fastening portion 26 is formed in the center portion between the pin hole 28 and the engagement end portion 34.
[0015]
Bolt fastening portion 26 of the central portion of the sheet-side hinge plate 2 2 is fastened to the seat bottom plate 30 via the elastic resin of the anti-vibration cushion 36, such as rubber. Here, the bolt 48 of the tightening wear its base has been implanted in the seat bottom plate 30, is wearing a peripheral threaded portion in color inserting the fastening hole 26a of the hinge plate 2 2 of the bolt fastening section 26 Then, the end is screwed with a nut and fixed. The vibration-proof cushion 36 is fitted into the fastening hole 26a to cover the bolts 48 around the between the hinge plate 2 2 and the seat bottom plate 30, moreover, the seat cushion 50 nut 48a is made of a washer and an elastic member screwed to the bolt 48 via a has a seat bottom plate 30 so as to floatingly supported by the hinge plate 2 2.
Therefore, since the bolt fastening portion 26 is fastened to the seat bottom plate 30 via the vibration isolating cushion 36, vibration transmission from the vehicle body or the engine 16 to the seat 12 can be reduced by the vibration absorbing action of the vibration isolating cushion 36.
[0016]
Further, the engagement end 34 provided at the other end 22 b of the seat side hinge plate 22 rotates relatively upward with respect to the seat bottom plate 30 around the bolt fastening portion 26. The engagement portion 32 of the seat bottom plate 30 is engaged with the rotation allowance gap 54 so as to allow the rotation.
Therefore, since the rotation allowance gap 54 is provided and the other side end 22b (engagement end 34) of the hinge plate 22 is allowed to rotate upward, vibration transmission from the vehicle body to the seat 12 is reduced. The engagement end portion 34 can be easily engaged with the engagement portion 32 by the gap 54, and the seat 12 can be more easily attached to the vehicle body side hinge plate 20.
As described above, in the embodiment, since the structure allows the operator to fasten the seat without supporting the seat when the seat is assembled, the work load can be reduced.
[0017]
In the above embodiment, the present invention is applied to an underbone type motorcycle. However, the present invention can be applied to a seat opening / closing structure even in a scooter type or other types of motorcycles in which the front side of the seat is not lowered. It is obvious.
[0018]
【The invention's effect】
According to the present invention, the seat side hinge plate is provided with a bolt fastening portion for fastening the hinge plate to the seat bottom plate at the center portion thereof, and a pin hole through which the hinge pin is passed at one end portion, Since the engagement end portion that engages with the seat bottom plate is provided at the other side end portion with the bolt fastening portion interposed therebetween, the vehicle body side hinge plate that is attached to the vehicle body side in advance when the operator assembles the seat to the vehicle body The engagement end of the other side end of the seat side hinge plate can be engaged with the engagement portion of the seat bottom plate so that the sheet can be held on the plate in a temporarily assembled state. Sometimes it is not necessary for the operator to work while holding the seat body, so that the work efficiency is improved and the burden on the operator can be reduced.
In addition, a rotation allowance clearance is provided to allow the other end of the seat-side hinge plate to pivot upward at the engaging portion of the seat bottom plate, so that vibration transmission from the vehicle body to the seat is sufficiently reduced. As a result, the engagement end portion can be easily engaged with the engagement portion by the gap, and it becomes much easier to attach the seat to the vehicle body side hinge plate.
Further, if the bolt fastening portion is fastened to the seat bottom plate via the vibration-proof cushion, vibration transmission from the vehicle body to the seat can be sufficiently reduced.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of an overall configuration of a motorcycle according to an embodiment of the present invention as viewed from the side.
FIG. 2 is a rear explanatory view including a motorcycle seat.
FIGS. 3A and 3B are configuration explanatory views of a hinge of a seat, FIG. 3A is a bottom view of a main part, and FIG. 3B is a sectional view taken along line II-II in FIG.
FIG. 4 is a detailed bottom view of the seat after the hinge plate is assembled.
FIGS. 5A and 5B are detailed explanatory views of a seat side hinge, where FIG. 5A is a bottom view, FIG. 5B is a cross-sectional view taken along line VV in FIG. 5A, and FIG. It is sectional drawing.
6A and 6B are explanatory views of a conventional hinge plate, in which FIG. 6A is a cross-sectional view taken along the vehicle traveling direction, and FIG. 6B is a cross-sectional view taken along line VI-VI of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Body frame 10 Car body 12 Seat 20 Car body side hinge plate 22 Seat side hinge plate
22a, 22b One end of the seat side hinge plate, the other end 24 Hinge pin 26 Bolt fastening portion
26a Fastening hole 28 Pin hole 30 Seat bottom plate 32 Engagement part 34 Engagement end part 36 Anti- vibration cushion 40 Reinforcement rib 40a of sheet Reinforcement rib opening (entrance of engagement part)
44 sheet-side hinge plate standing wall 46 volts for reinforcing rib 48 fastening
48a Nut 54 Allowable rotation gap

Claims (2)

In a motorcycle seat device in which a seat is rotatably mounted on a vehicle body by connecting the vehicle body side hinge plate attached to the vehicle body side and the seat side hinge plates attached to the seat side with hinge pins,
The seat-side hinge plate is provided with a bolt fastening portion for fastening the hinge plate to the seat bottom plate at the center thereof, and a pin hole through which the hinge pin is passed at one side end portion, while the bolt fastening An engagement end portion that engages with the sheet bottom plate is provided at the other end portion across the portion,
An engagement end provided at the other end of the seat side hinge plate allows the seat bottom plate to pivot relatively upward with respect to the vicinity of the bolt fastening portion with respect to the seat bottom plate. A seat mounting structure for a motorcycle, wherein the engaging portion is engaged with a rotation-permissible clearance .   The seat mounting structure for a motorcycle according to claim 1, wherein a bolt fastening portion at a center portion of the seat side hinge is fastened to a seat bottom plate via a vibration-proof cushion.

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