JPH0829741B2 - Frame structure of scooter type vehicle - Google Patents

Description

TECHNICAL FIELD The present invention relates to a frame structure of a scooter type vehicle.

BACKGROUND ART In a scooter type vehicle in which an engine part is covered, and a leg shield and a low-floor step floor (foot rest part) connected to the leg shield are provided, the inside of the body of the vehicle body is effectively used for arranging other members, and a multifunctional function is provided. It is desirable to have a frame structure that can be realized.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has a structure that does not affect swinging of a power unit formed integrally with a wheel while maintaining a good positional relationship between the body space and other members. It is an object of the present invention to provide a frame structure of a scooter type vehicle capable of obtaining the following.

The frame structure of the scooter type vehicle of the present invention comprises a pair of frame pipes in which a front end portion is connected to a head pipe and a rear rising portion standing obliquely rearward behind a footrest portion is expanded in the vehicle left and right direction, and the frame. The pipe has at least one suspension having an upper end connected to a rear end of the pipe and arranged inside the frame pipe to support a rear wheel, and a rear storage chamber arranged behind the suspension. The suspension has a frame structure of a scooter type vehicle whose axis is arranged to be substantially parallel to the front wall surface of the rear storage chamber, and in the vehicle lateral direction outer side of the suspension and below the upper end portion thereof, A supporting frame for supporting the rear storage chamber is extended to the rear of the vehicle so as to intersect with the suspension in a side view of the vehicle. It is characterized in that.

Example Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

In FIG. 1, a scooter type vehicle 1 according to the present invention is
It has a so-called American type body structure with a handle 2 provided at a high position and a seat (seat) 3 provided at a low position, and the wheelbase is set to be extremely long as compared with a conventional motorcycle. Has been done. Sheet 3
Is a so-called V-shaped seat in which a rider's seat and a tandem seat are integrally formed and have a substantially V-shape.
Above the front wheel 4, there is provided a leg shield 5 having an acute shape when viewed from the side.
A low floor step floor 7 arranged between the front wheels 4 and the rear wheels 6 connected to this, and a front edge connected to the low floor step floor 7 inclines along the rear edge of the V-shaped seat 3 to cover the upper portion of the rear wheel 6. Rear cover 8
And form a body cover. A screen 9 is provided above the leg shield 5 and in front of the handle 2.
Is provided, and side mirrors 10L and 10R are arranged on both left and right sides thereof.

In FIG. 2, a vehicle body frame is constituted by a head pipe 11, a main pipe 12, and a pair of down pipes 13L and 13R. The main pipe 12 falls diagonally rearward from the head pipe 11 and horizontally from the upper rear of the front wheel 4 from the rear. The pair of down pipes 13L and 13R extend diagonally rearward from the head pipe 11 to a position lower than the main pipe 12 and extend parallel to each other rearward of the vehicle body and rise substantially vertically at the rear. It extends diagonally upward and rearward of the vehicle body. As shown in FIGS. 3 and 4, a cross member 14 is fixed between the vertical rising portions of the down pipes 13L and 13R, and the rear end of the main pipe 12 is attached to the middle portion of the cross member 14. Are combined.

The horizontal extension portions of the main pipe 12 and the pair of down pipes 13L and 13R are arranged so that the line connecting the pipes forms an isosceles triangle with the main pipe 12 as the apex, as is particularly clear from FIG. They are joined together by gusset plates 15. A pair of stays 16L and 16R having an L-shaped cross section are projected from the gusset plate 15 to the left and right sides, and long U-shaped pipes 17L and 1L are provided on the stays 16L and 16R.
7R is screwed through mounting plates 18L and 18R. As shown in FIG. 6, the long U-shaped pipes 17L and 17R extend from below the head pipe 11 to below the seat 3 substantially along the main pipe 12.

2 and 3, a pair of down pipes 13L,
A substantially V-shaped seat pipe 19 is welded to the rear apex of the rear portion 13R, and its front end is supported by support pipes 20a and 20b fixed between the vertical pipes of the down pipes 13L and 13R. The V-shaped seat 3 is placed on the seat pipe 19. The seat 3 has a hook 3a (shown in FIG. 8) provided at the rear portion of the seat 3 on the seat pipe 19.
The seat pipe 1 is fastened to the fixing portion 19a of the seat pipe 19 by the fixing portion 3b after being locked by the seat pipe 1b.
Fixed against 9.

The low floor type step floor 7 described above is shown in FIG. 3 and FIG.
As shown in the figure, the floor panel 22 is provided along the main pipe 12 and the pair of down pipes 13L and 13R. The floor panel 22 has a convex portion 22a in the center of which the main pipe 12 is located, and as shown in FIG. 6, the front end portions of the long U-shaped pipes 17L and 17R provided along the main pipe 12. It is bolted to the mounting plates 23a and 23b fixed to the rear end portion. Side panels 24L, 24R are provided at the side end portions of the floor panel 22,
As shown in FIG. 4, the rear end bent portion 24a is bolted to the rear end portion of the long U-shaped pipe 17L (17R).

As shown in FIGS. 6 and 7, a fuel tank 25 is disposed between the horizontally extending portions of the pair of down pipes 13L and 13R, and the mounting stays 26a and 26b projecting from the front and rear portions thereof are provided. Are bolted to the mounting plates 27a, 27b fixed between the pair of down pipes 13L, 13R. A fuel injection port portion 28 is provided in a projecting manner on the upper surface of the fuel tank 25, for example, on the right side of the main pipe 12 with respect to the traveling direction of the vehicle, and a fuel cap 29 is capped on the open end thereof. In order to enable the supply of fuel to the fuel tank 25, an upper portion of the fuel cap 29 of the floor panel 22 is opened, and a lid (lid body) 30 is provided in this opening via hinges 30a and 30b. It can be opened and closed freely. A key 31 is attached to the center of the free end of the lid 30. An underguard plate 32 for protecting the fuel tank 25 is provided below the fuel tank 25.
Is fitted to the lower edges of the side panels 24L, 24R at their side edges.

2 and 8, a pair of down pipes 13L,
Triangular gusset plate 33 on the rear rise of 13R
Is welded to the gusset plate 33, and a power unit 35 that is integrally formed with the engine 34 and transmits the power of the engine 34 to the rear wheels 6 is linked at the front end thereof.
It is swingably attached via 36. An air cleaner case 37 is attached on the power unit 35. The rear end of the power unit 35 is connected to the left side of the axle of the rear wheel 6 with respect to the vehicle traveling direction. On the right side of the axle,
As shown in FIG. 4, the front end portion is joined to the rear end portion of the support plate 38 attached to the crankcase of the engine 34. A muffler 86 is arranged outside the support plate 38. As is apparent from FIG. 4, the rear rising portions of the pair of down pipes 13L and 13R are expanded, so that the swinging amount of the air cleaner case 37 can be sufficiently secured without hindering the swinging movement, and Down pipe 13
It is possible to obtain a sufficient inclination angle of L and 13R with respect to the vertical plane. Furthermore, the capacity of the rear trunk 67 described later can be increased. A pair of down pipes 13L,
A cross member 39 is fixed between the rear ends of the 13R, and the upper ends of a pair of suspensions 40L, 40R supporting the rear wheels 6 are attached to the cross member 39 via stays 41a, 41b. . By installing cross member 39, suspension 4 by down pipe 13L, 13R
Support strength of 0L and 40R is increased.

In FIGS. 3 and 8, the rear cover 8 has a protrusion 42 on its upper portion, and a plurality of louvers for discharging heat emitted from the engine 34 to the outside is provided on the rear inclined surface of the protrusion 42. A discharge port) 43 is provided. According to this,
Due to its nature, the heat emitted from the engine 34 rises along the upper inclined surface 8a of the rear cowl 8 to the protrusion 42,
By the action of the traveling wind that flows along the rear inclined surface of the 42, it is sucked out from the louver 43 and smoothly discharged to the outside. Backrest on the front of the protrusion 42
44 are provided. Further, a partition plate 8a formed of a heat insulating material is disposed on the upper inclined surface inclined along the rear edge of the seat 3 of the rear cowl 8, and this partition plate 8a is preferably made of a resin having heat insulating properties. It is molded integrally with 8. By disposing the partition plate 8a having the heat insulating property on the upper inclined surface of the rear cowl 8, it is possible to prevent the heat emitted from the engine 34 from being transferred to the seat 3 and protect the seat 3 from the heat. The life can be extended.

The rear cover 8 is vertically divided into two parts: an upper cover (first portion) 8A that covers the peripheral portion of the engine 34 and an upper portion of the rear wheel 6, and a lower cover (second portion) 8B that covers the power unit 35. . According to this, when performing maintenance or the like of the power unit 35, it is not necessary to remove the entire rear cover 8 from the vehicle body, and only the lower cover 8B needs to be removed, so that workability such as maintenance can be improved. The lower cover 8B is formed with an introduction port 45 that opens forward in the vehicle traveling direction and that introduces traveling wind into the vehicle body. As shown in FIG. 4, the lower cover 8B has a boss 53 inside the front end thereof, and is fitted into the mounting hole 54 provided at the rear end of the long U-shaped pipe 17L (17R) described above with the boss 53. Be worn.

Below the seat 3, a battery case 46, a chamber 47 to which air is supplied from an air cleaner case 37 on the power unit 35 through a tube (not shown), a carburetor 48 communicating with the chamber 47, and the like are arranged.
Each of these members is covered by the under-seat cover 49. As is apparent from FIG. 3, the rear portion of the convex portion 22a of the floor panel 22 is obliquely cut, and the under-seat cover 49 has the convex portion.
The lower end of the diagonally cut portion 22a is joined to the floor panel 22 and is connected to the diagonally cut portion, thereby enhancing the sense of unity of the body cover. Further, by joining the under-seat cover 49 to the floor panel 22 at a position higher than the floor surface,
The sand and mud on the floor will not enter the inside of the car body through the joints. A plurality of positioning pieces 50 and a plurality of fixing portions 51 are integrally provided at the lower end portion of the under-seat cover 49, and the fixing portions protruding from the inside of the oblique cutting portion of the convex portion 22a by these fixing portions 51. It is bolted to 52 as shown in FIG.

In FIGS. 4, 6 and 8, a main stand 55 is arranged below the seat 3 so as to be located between the under guard plate 32 and the power unit 35. As is apparent from FIG. 4, the main stand 55 is a rotary shaft rotatably attached to a cross member 56 fixed between a pair of down pipes 13L and 13R via stays 57a and 57b. 58, the leg portions 59L and 59R fixed to the rotary shaft 58, and the cross member 60 fixed between the leg portions, and the use position indicated by the alternate long and short dash line in FIG. 8 and the storage indicated by the solid line ( It is swingable between the (unused) position. Return springs 62L, 62R are stretched between the legs 59L, 59R and the stays 57a, 57b. A stopper 63 that abuts the main stand 55 at the storage position is attached near the rear rising portion of the down pipes 13L and 13R, and a rubber 64 as a cushioning material is attached to the abutting surface of the stopper 63. There is. Under guard plate 32
Main stand located between the power unit and the power unit 35
55 also functions as a protective member for protecting auxiliary devices such as a fuel pump 65 arranged above it, the engine 34, and a frame pipe.

The main stand 55 has a footrest arm 61 protruding from the leg 59L to the outside of the vehicle body. When the main stand 55 is in the storage position, the foot rest 61a of the foot rest arm 61 moves to the third position.
The lower cover of the rear cover 8 as shown in FIGS.
It is arranged so as to be located in front of the introduction port 45 formed in 8b and inside the vehicle body with respect to the outer edge of the stick-out portion 8b of the rear cover 8. With this arrangement, the footrest 61a of the footrest arm 61 is stored below the overhanging portion 8b of the rear cover 8 when the main stand 55 is not in use, so that it does not interfere with the rider. Further, when the main stand 55 is stood, it is sufficient to carry the foot F below the overhanging portion 8b of the rear cover 8 and place it on the footrest 61a, as shown in FIG. I will never come.

In FIG. 2 and FIG. 8, a trunk frame 66 as a rear storage chamber supporting frame extends from the gusset plate 33 welded to the rear rising portions of the down pipes 13L, 13R to the rear of the vehicle body, and a rear portion of the trunk frame 66 is mounted on the trunk frame 66. A rear trunk 67 that forms a storage room is attached. As is clear from FIG. 9, the trunk frame 66 is substantially U-shaped.
The support pipes 68L, 68 each having a V shape and fixed to the gusset plate 33 at the front end thereof and further welded to the middle portion thereof.
It is fixed to the down pipes 13L and 13R via R. flame
For example, three fixing portions 69 are welded to the 66 and the support pipes 68L and 68R, and the rear trunk is attached to the fixing portions 69.
67 is bolted at three mounting holes 70 provided at the bottom thereof.

The rear trunk 67, as shown in FIG.
67U and lower case 67L, each case is integrated by being fitted to each other at its open end to define a trunk room (storage room), and fixing parts 71U, 71L provided at several places on the periphery. They are fixed to each other by screwing. Multiple ribs 72U on the outer surface of the upper case 67U
In the horizontal direction, and a plurality of ribs 72L are integrally provided in the vertical direction and the horizontal direction on the bottom surface of the lower case 67L,
The ribs 72U and 72L improve the rigidity of the trunk body.

Rear trunk mounted on trunk frame 66
67 is surrounded by the upper cover 8A of the rear cover 8.
As shown in FIG. 9, the upper cover 8A is bolted to a plurality of nuts 74 welded to the trunk frame 66 at a plurality of mounting holes 73 formed at the lower end portion thereof, whereby the vehicle body is Fixed against. Trunk frame
A taillight assembly 76 is attached to the stay 75 welded to the rear end portion of 66. Tail light assembly 76
Includes a tail light 77 and a number guard 79 to which a license plate 78 is attached. The lower cover 8B of the rear cover 8 has, for example, two protruding pieces 80 on its upper edge.
Has a convex piece 81 at the upper rear end, and these convex pieces 80, 81 are fitted with a fitting hole 82 and a number guard formed in the upper cover 8A.
The holes are fitted in the fitting holes 83 formed in the holes 79, and are bolted to the mounting holes 85 formed in the number guard 79 at the rear end mounting holes 84. The front end portion of the lower cover 8B is fitted to the vehicle body frame by the boss 53, as described in FIG.

In FIG. 8, the rear trunk 67 is provided so as to be opened rearward of the vehicle body while being housed in the rear cover 8, and the opening edge thereof is slightly projected from the body (rear cover 8). A lid (lid body) 91 that opens and closes the opening is swingably attached to the trunk frame 66 via a hinge 92 at a lower end portion thereof, and a key 93 is provided at a central portion of an upper end thereof. A seal member 94, which is in pressure contact with the lid 91 in the closed state, is attached to the opening edge of the rear trunk 67 protruding from the body, thereby improving the waterproofness of the rear trunk 67. Further, as is clear from FIG. 13, a groove 96 is defined by the edge of the upper cover 8A, the rear trunk 67 and the seal member 94, and this groove 96 acts as a guide groove for discharging rainwater.

As is clear from FIG. 4, the rear cover 8 is formed wider than the step floor 7. The rear trunk 67 accommodated in the rear cover 8 is arranged such that the outer wall thereof is close to the inner surface of the rear cover 8. According to this, the capacity of the trunk compartment of the rear trunk 67 can be improved, and the rear trunk 67 can be covered with the rear cover 8.
Can be used as a reinforcing member against deformation of the rear cover 8, and the rigidity of the rear cover 8 can be improved without using a dedicated reinforcing member.

A muffler 86 is located below the right side of the rear trunk 67 in the vehicle traveling direction, as shown in FIG. To prevent the heat from the muffler 86, a heat insulating material 87 is attached to the trunk bottom plate above the muffler 86. As shown in FIGS. 12 (A) and 12 (B), the heat insulating material 87 is composed of glass wool 88 and silver paper 89 covering the glass wool 88, and is fixed to the trunk bottom plate by caulking rivets 90 at several points. To be done. Due to the action of the heat insulating material 89, the heat from the muffler 86 can be blocked and the trunk bottom plate can be protected from the heat. Insulation 89
An air layer 95 is formed between the trunk bottom plate and the trunk bottom plate due to the presence of the rib 72L, and the heat insulating effect can be further improved by the air layer 95.

In the above embodiment, the step floor 7, the rear cover 8, the floor panel 22, the rear trunk 67, etc. are made of resin, and the main pipe 12, the down pipe 13 and the like.
It is assumed that the frame members such as L, 13R, the seat pipe 19, the trunk frame 66, etc. are made of metal.

As described above, in the frame structure of the scooter type vehicle according to the present invention, the support frame that supports the rear storage chamber is toleranced to the side view suspension outside the suspension and below the upper end thereof. As described above, since it is configured to extend toward the rear of the vehicle, it is possible to lower the ground height of the bottom portion of the rear storage chamber, and thus to lower the center of gravity of the rear storage chamber.

Further, since the support frame is located outside the suspension in the vehicle left-right direction, the rear storage chamber can be expanded in the vehicle width direction without interfering with the suspension, and thus the capacity can be increased.

[Brief description of drawings]

1 is a side view of a scooter type vehicle according to the present invention, FIG. 2 is a side view showing a frame structure thereof, FIG. 3 is an exploded perspective view of a seat portion, FIG. 4 is a cutaway plan view of a rear portion of a vehicle body, FIG. 5 is a front view of the rear part of the vehicle body cut at the center of the vehicle body, FIG. 6 is a side view including a partial fracture surface showing the step floor portion, and FIG.
6 is a sectional view taken along the line I-I of FIG. 6, FIG. 8 is an enlarged side view including a partial cross section of the rear portion of the vehicle body, FIG. 9 is an exploded perspective view of the vehicle body rear portion, and FIG. 10 is an exploded perspective view showing the rear trunk. Fig. 11 is a perspective view showing the positional relationship between the rear trunk and the muffler as seen obliquely from below, and Figs. 12 (A) and 12 (B) are II- in Fig. 11.
A sectional view taken along line II and III-III, and FIG. 13 is an enlarged view of an essential part of FIG. Explanation of symbols of main parts 3 …… V type seat, 7 …… Step floor 8 …… Rear cover, 11 …… Head pipe 12 …… Main pipe 13L, 13R …… Down pipe 17L, 17R …… Longitudinal U-shaped pipe 19 …… Seat pipe 22 …… Floor panel 25 …… Fuel tank 32 …… Under guard plate 34 …… Engine, 35 …… Power unit 40L, 40R …… Suspension 49 …… Seat bottom cover 55 …… Main stand 61 …… Footrest arm 66 …… Trunk frame 67 …… Rear trunk

Claims (1)

[Claims] 1. A pair of frame pipes in which a front end portion is connected to a head pipe, and a rear rising portion standing diagonally rearward behind a footrest portion is widened in a vehicle left-right direction, and a rear end portion of the frame pipe. The suspension includes at least one suspension that is connected to the upper end of the suspension and that is disposed inside the frame pipe to support a rear wheel, and a rear storage chamber that is disposed behind the suspension, and the suspension has its axis. Is a frame structure of a scooter type vehicle that is arranged so as to be substantially parallel to the front wall surface of the rear storage chamber, wherein the vehicle is laterally outside in the vehicle lateral direction of the suspension and below the upper end thereof in a side view of the vehicle. A support frame that supports the rear storage chamber so as to intersect the suspension is extended to the rear of the vehicle. Frame structure of the type of vehicle.