WO2011065424A1

WO2011065424A1 - Seat support structure for two-wheeled motor vehicle

Info

Publication number: WO2011065424A1
Application number: PCT/JP2010/071022
Authority: WO
Inventors: 隆信増田
Original assignee: スズキ株式会社
Priority date: 2009-11-30
Filing date: 2010-11-25
Publication date: 2011-06-03
Also published as: CN102639392B; JP5581674B2; CN102639392A; JP2011111111A

Abstract

A seat support structure for a two-wheeled motor vehicle (10), configured in such a manner that an article containing box (38) and a fuel tank (39) are disposed below the seat (25) so as to be respectively located at the front and rear of the seat (25) in the front-rear direction of the vehicle body, that the article containing box and the fuel tank are supported by a rear frame (14), and that the load on the seat (25) is supported by the rear frame through the article containing box. The article containing box is provided, at the front end thereof in the front-rear direction of the vehicle body, with a hinge receiving section (54) for supporting the front end of the seat through a hinge (53), and is also provided, at the rear end thereof, with a seat support base (44) which can make contact with the bottom plate (57) of the seat, the seat support base being supported by the rear frame.

Description

Motorcycle seat support structure

The present invention relates to a seat support structure for a motorcycle, and more particularly to a seat support structure for a motorcycle in which a seat load is supported by a vehicle body frame via an article storage box.

In general, a motorcycle employs a seat support structure in which an article storage box and a fuel tank are disposed below a seat, and a seat load is supported by a vehicle body frame via the article storage box and the fuel tank (for example, JP-A-11-139371 (Patent Document 1)).

That is, the article storage box is supported by the vehicle body frame at the front portion and the rear portion of the bottom portion, and is supported by the vehicle body frame via the fuel tank by a flange portion formed at the rear portion and covering the upper portion of the fuel tank. Yes. The bottom plate of the sheet is provided so as to be able to contact the upper edge of the article storage box. Accordingly, the seat load is supported by the vehicle body frame via the upper edge of the article storage box, the bottom front portion, the bottom rear portion, and the flange portion of the article storage box.

Since the seat support structure for a motorcycle described in Patent Document 1 is configured as described above, the article storage box has a bottom front side portion, a bottom rear portion supported by the vehicle body frame, from an upper edge portion where a seat load directly acts. It is necessary to reinforce by forming a rib in the section to the side part and the collar part, that is, the entire article storage box. For this reason, the weight of the article storage box is increased, and an increase in size is inevitable.

Furthermore, since the article storage box is supported by the vehicle body frame at three locations, that is, the bottom front side portion, the bottom rear side portion, and the flange portion, the structure for supporting the vehicle body frame is a complicated structure.

DISCLOSURE OF THE INVENTION An object of the present invention has been made in consideration of the above-described circumstances, and provides a seat support structure for a motorcycle capable of realizing a reduction in weight and size of an article storage box capable of supporting a seat load. It is in.

In order to achieve the above object, the present invention provides an article storage box on the front side in the longitudinal direction of the vehicle body and a fuel tank on the rear side below the seating seat, and the article storage box and the fuel tank. Is a seat support structure for a motorcycle in which a load of the seat is supported by the vehicle body frame via the article storage box, and the article storage box has a hinge at a front-rear direction front end portion of the vehicle body. A hinge receiving portion that supports the front end portion of the seat is provided via a seat, and a seat support pedestal that can contact the bottom plate of the seating seat is provided at the rear end portion, and the seat support pedestal is supported by the vehicle body frame. It is characterized by that.

Also, in a preferred embodiment of the invention, the article storage box may be supported by the vehicle body frame at two locations, the front side in the vehicle body front-rear direction and the seat support base.

The seat support pedestal may be formed in a box shape that bulges toward the fuel tank.

Further, the seat support pedestal may be fastened to the vehicle body frame together with a flange formed integrally with the fuel tank so as to protrude forward in the longitudinal direction of the vehicle body, or via an elastic member between the fuel tank flange and the fuel tank flange. It may be fastened and fastened to the body frame.

Further, the flange of the fuel tank extends in the vehicle width direction, and can be configured to be able to contact substantially the entire surface of the seat support base of the article storage box.

According to the present invention having the above characteristics, since the seat support base of the article storage box that supports the seat load by contacting the bottom plate of the seating seat is supported by the vehicle body frame, it is sufficient to reinforce the seat support base. There is no need to reinforce the entire storage box. For this reason, weight reduction and size reduction of an article storage box are realizable.

Further features, functions and effects of the present invention will become more apparent from the embodiments described below.

1 is a left side perspective view showing a motorcycle to which an embodiment of a seat support structure for a motorcycle according to the present invention is applied. FIG. The perspective view which shows the detail of the article | item storage box of FIG. 1, a fuel tank, and a rear frame. FIG. 3 is an enlarged sectional view taken along line III-III in FIG. 2. FIG. 4 is a sectional view taken along line IV-IV in FIG. 2. FIG. 5 is a sectional view taken along line VV in FIG. 3.

Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. In the following description, the terms indicating the vertical and horizontal directions are described based on the illustrated state or the posture of the motorcycle shown in FIG.

1, in a motorcycle to which an embodiment of the motorcycle seat support structure according to the present invention is applied, a scooter type motorcycle 10 includes an underbone type body frame 11. In the vehicle body frame 11, one main frame 13 extends downward from the rear portion of the steering pipe 12 at the front head, and a pair of left and right rear frames 14 extends rearward and obliquely upward from the vehicle lower portion of the main frame 13. It is configured to be extended.

A front fork 15 is supported on the steering pipe 12 so as to be able to turn left and right together with a handle bar 16, and a front wheel 17 is pivotally supported at the tip of the front fork 15. On the other hand, at the vehicle lower center of the main frame 13, a power unit 19 is pivotally supported via a link member 18 so as to be swingable in the vertical direction around the pivot shaft 20.

The power unit 19 is generally used for a scooter, and an engine 21 and a transmission device 22 are integrally formed, and a rear wheel 23 is directly supported on the rear portion of the transmission device 22. A rear cushion unit 24 is stretched up and down between the rear portion of the transmission device 22 and the rear frame 14, and the power unit 19 and the rear wheel 23 are buffered and suspended by the rear cushion unit 24.

A seating seat 25 is provided above the rear frame 14 in the body frame 11 so as to be freely opened and closed. Below the seat 25, an article storage box 38 capable of storing a helmet or the like is disposed on the front side of the vehicle, and a fuel tank 39 is disposed on the rear side of the vehicle. By opening the seating sheet 25, the articles can be taken in and out of the article storage box 38. The front portions of the vehicle body frame 11 and the power unit 19 are entirely covered with a synthetic resin frame cover 26 to improve the appearance and protect internal devices.

The engine 21 is configured such that a cylinder assembly 28 extends from a front side of a crankcase 27 so as to be inclined forward in a substantially horizontal direction. The conduction device 22 is integrally provided from the left side of the crankcase 27 and extends rearward. The cylinder assembly 28 includes a cylinder block 29, a cylinder head 30, and a head cover 31 that are sequentially stacked from the crankcase 27 side.

Above the cylinder assembly 28 and the crankcase 27, an engine intake system 33 that supplies an air-fuel mixture (fuel / air mixture) to an intake port (not shown) of the cylinder head 30 is disposed. The engine intake system 33 includes an air cleaner 34, an outlet hose 35, a throttle body 36, an intake pipe 37, and a fuel injection device (not shown).

The one end of the intake pipe 37 is connected to an intake port that opens to the top of the cylinder head 30. The throttle body 36 is connected to the other end of the intake pipe 37 and adjusts increase / decrease in the amount of intake air supplied to the intake port of the cylinder head 30. Further, the fuel injection device is erected on the upper portion of the intake pipe 37 and injects a predetermined amount of fuel from the fuel tank 39 toward the intake port of the cylinder head 30. The air cleaner 34 is fastened to the upper portion of the transmission device 22 with a bolt or the like, and the air cleaner 34 and the throttle body 36 are connected by an outlet hose 35. The air cleaner 34 takes in outside air, removes dust and the like with a filter (not shown), and guides clean air to the throttle body 36 as intake air.

Further, an exhaust port (not shown) is opened on the lower surface of the cylinder head 30. An exhaust pipe (not shown) extends rearward from the exhaust port, and an exhaust muffler 40 is connected to the rear end of the exhaust pipe so that an engine exhaust system is connected. Is configured. The engine exhaust system and the engine intake system 33 swing with the power unit 19 in the vertical direction around the pivot shaft 20.

By the way, the pair of left and right rear frames 14 pass through the left and right sides of the article storage box 38, and stand rearward and obliquely upward between the upper portion of the rear wall 38A of the article storage box 38 and the front portion of the fuel tank 39. After being raised, it is extended rearward substantially horizontally. A bridge pipe 41 is spanned between the pair of rear frames 14 at positions corresponding to the upper portion of the rear wall 38A of the article storage box 38 and the front portion of the fuel tank 39.

As shown in FIG. 2, the fuel tank 39 is integrally formed with a flange 42 over substantially the entire periphery. In the flange 42, a flange front portion 42A protruding forward of the vehicle is placed on the bridge pipe 41 and fixed together by fastening as described later. Further, the flange rear portion 42 B of the flange 42 is also fixed to the rear frame 14. The fuel tank 39 is supported by the rear frame 14 by the flange front part 42A and the flange rear part 42B.

As shown in FIG. 1, the article storage box 38 is provided with a frame mounting portion 43 on the front side of the bottom portion, and a seat support base 44 that bulges rearward of the vehicle is integrally formed on the upper portion of the rear wall 38A. Is done. As shown in FIG. 3, the seat support pedestal 44 includes a pair of left and right pedestal side wall portions 45, and a pedestal bottom portion 46 integrated with a lower portion of the both pedestal side wall portions 45 and a rear wall 38 A of the article storage box 38. And a pedestal rear wall portion 47 integrated with the pedestal bottom portion 46 and the rear portions of both pedestal side wall portions 45, and is configured in a box shape.

The frame mounting portion 43 is fixed to a stay 48 that spans between a pair of left and right rear frames 14, as shown in FIGS. Further, as shown in FIGS. 3 and 5, the pedestal bottom 46 of the seat support pedestal 44 is placed on the upper surface of the flange front portion 42 A of the fuel tank 39, and the bolt 49 and the nut 50 are used to flange the fuel tank 39. Together with the front portion 42 A, it is fastened together with a mounting bracket 51 attached to the bridge pipe 41. Accordingly, the article storage box 38 is supported by the rear frame 14 at two locations, that is, the frame attachment portion 43 and the pedestal bottom portion 46 of the seat support pedestal 44.

Here, an elastic member 52 is interposed between the head of the bolt 49 that presses the pedestal bottom 46 of the seat support pedestal 44 and the flange front part 42A of the fuel tank 39. That is, the pedestal bottom 46 of the seat support pedestal 46 is attached to the mounting bracket 51 of the bridge pipe 41 by the bolt 49 and the nut 50 via the elastic member 52 between the flange front part 42 A of the fuel tank 39.

Further, the flange front portion 42A of the fuel tank 39 is extended in the vehicle width direction as shown in FIG. The pedestal bottom 46 of the seat support pedestal 44 is fastened together with the mounting bracket 51 of the bridge pipe 41 by a plurality of (for example, two) bolts 49 together with the flange front part 42A of the fuel tank 39.

In the present embodiment, the seating seat 25 shown in FIG. 1 is a two-seater seat made up of a driver seat and a passenger seat, but it may be a single-seat seat having only a driver seat. The seating seat 25 is pivotally supported by a hinge receiving portion 54 of the article storage box 38 via a hinge 35 so that the front end portion of the seating seat 25 can pivot in the vehicle front-rear direction. The seating sheet 25 covers the article storage box 38 and the fuel tank 39 from above, and an upper opening 55 of the article storage box 38 is provided so as to be opened and closed by the seating sheet 25.

The rear end portion of the seating seat 25 is supported by being in contact with a tail bridge 56 spanned on the rear end portion of the rear frame 14, and can be freely engaged and disengaged using a lock mechanism (not shown) provided on the tail bridge 56. Composed. Further, the center part in the vehicle front-rear direction of the bottom plate 57 (FIG. 5) of the seating seat 25 is supported by being in contact with the base side wall 45 of the seat support base 44 provided on the rear wall 38 A of the article storage box 38. .

Therefore, as shown in FIG. 1, the load acting on the seating seat 25 is supported by the vehicle body frame 14 from the hinge receiving portion 54 of the article storage box 38 via the frame mounting portion 43 and the stay 48, and the article storage box 38. The seat support pedestal 44 is supported from the pedestal side wall 45 by the vehicle body frame 14 via the flange front portion 42A of the fuel tank 39 and the bridge pipe 41, and further supported by the vehicle body frame 14 via the tail bridge 56.

As shown in FIGS. 3 and 4, the pedestal side wall 45 of the seat support pedestal 44 that can come into contact with the bottom plate 57 of the seat 25 has a rib 58 extending in the vehicle vertical direction and a vehicle lateral direction as shown in FIG. The extending ribs 59 are integrally formed and reinforced.

Since it is configured as described above, according to the present embodiment, the following effects (1) to (6) are achieved.

(1) Since the seat support base 44 of the article storage box 38 that contacts the bottom plate 57 of the seating seat 25 and supports the seat load is supported by the rear frame 14 via the mounting bracket 51 and the bridge pipe 41, this seat. It is sufficient to reinforce the support base 44 using the

ribs

58 and 59, and it is not necessary to reinforce the entire article storage box 38. For this reason, weight reduction and size reduction of the article | item storage box 38 are realizable. Furthermore, since the size of the article storage box 38 can be reduced, the influence on the peripheral parts of the article storage box 38 such as the rear frame 14 or the seating seat 25 can be minimized.

(2) Since the article storage box 38 is supported by the rear frame 14 at the two positions of the frame attachment portion 43 and the seat support base, the support structure of the article storage box 38 to the vehicle body frame 11 can be simplified.

(3) Since the sheet support pedestal 44 of the article storage box 38 that contacts the bottom plate 57 of the seating seat 25 and supports the seat load is configured in a box shape, the article storage box 38 has a high rigidity and the vehicle left-right direction. It is possible to improve the strength against vibrations and inclinations.

(4) Since the seat support pedestal 44 of the article storage box 38 is fixed to the bridge pipe 41 via the flange front portion 42A of the fuel tank 39, even when the bridge pipe 41 has a cylindrical shape, the planar flange front The seat support base 44 can be securely attached to the bridge pipe 41 by interposing the portion 42A.

(5) The seat support pedestal 44 of the article storage box 38 that contacts the bottom plate 57 of the seat 25 has an elastic member 52 interposed between the flange front part 42A of the fuel tank 39 and the bridge pipe 41 to the fuel tank. 39 is fastened together with the flange front portion 42A. For this reason, even when the vibration of the engine 21 is transmitted to the flange front portion 42A of the fuel tank 39 via the rear frame 14 and the bridge pipe 41, the elastic member 52 can absorb the vibration. As a result, the vibration of the engine 21 can be prevented from being transmitted to the seating seat 25.

(6) Since the sheet support pedestal 44 of the article storage box 38 that abuts against the bottom plate 57 of the seating seat 25 only needs to abut against the bottom plate 57 of the seat 25, the pedestal side wall 45 only needs to abut against the bottom plate 57 of the seat 25. It is sufficient to increase the dimensional accuracy of only the side wall portion 45. For this reason, manufacture of the article storage box 38 can be facilitated.

As mentioned above, although this invention was demonstrated based on the said embodiment, this invention is not limited to this.

For example, if the substantially entire surface of the pedestal bottom portion 46 of the seat support pedestal 44 in the article storage box 38 is configured to contact the flange front portion 42A of the fuel tank 39, the pedestal bottom portion 46 and the flange front portion 42A of the seat support pedestal 44 are arranged. The contact area increases, and the durability of the seat support base 44 can be improved.

Claims

Below the seating seat, an article storage box is disposed on the front side in the longitudinal direction of the vehicle body, and a fuel tank is disposed on the rear side. The article storage box and the fuel tank are supported by the vehicle body frame, and the load on the seat is applied to the article. In a motorcycle seat support structure supported by the vehicle body frame via a storage box,
The article storage box is provided with a hinge receiving portion that supports a front end portion of the seat via a hinge at a front-rear direction front end portion of the vehicle body, and a seat support base that can contact the bottom plate of the seating seat at a rear end portion And a seat support structure for a motorcycle, wherein the seat support base is supported by the body frame.
2. The motorcycle seat support structure according to claim 1, wherein the article storage box is configured to be supported by the vehicle body frame at two locations of a vehicle body longitudinal direction front side at a bottom portion and a seat support base.
The seat support structure for a motorcycle according to claim 1, wherein the seat support base is formed in a box shape that bulges toward the fuel tank side.
The seat support structure for a motorcycle according to claim 1, wherein the seat support pedestal is fastened to the vehicle body frame together with a flange formed integrally with the fuel tank so as to protrude forward in the vehicle body longitudinal direction.
5. The seat support structure for a motorcycle according to claim 4, wherein the seat support base is fastened and fixed to the vehicle body frame with an elastic member between the seat support base and a flange of the fuel tank.
The seat support structure for a motorcycle according to claim 4, wherein the flange of the fuel tank extends in the vehicle width direction and is configured to be able to contact substantially the entire surface of the seat support base of the article storage box.