JP3591675B2 - Motorcycle seat structure - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a seat structure of a motorcycle, and more particularly to a seat structure in which a backrest for supporting a waist of an occupant such as a driver from behind is provided movably in a front-rear direction.
[0002]
[Prior art]
As the seat provided with the backrest, for example, a tandem seat portion on which an occupant sits behind the main seat portion for the driver is formed one step higher, and a vertical portion forming a step portion which is a boundary portion between both seat portions is formed. In some cases, a backrest is provided in front of the wall. With this backrest, the driver sitting on the main seat portion has the waist supported from behind, and the riding comfort is improved. Conventionally, such backrests have been put to practical use in which the arrangement position can be adjusted back and forth according to the driver's height, riding position preference, and the like. As an example of the structure, a convex portion protruding forward of the vehicle body is formed at the center of the vertical wall portion, while a concave portion slidably fitted to the convex portion of the vertical wall portion is formed on the rear surface of the backrest. Once formed, the backrest is moved back and forth along the protrusion to secure the backrest in place. To fix the backrest, a stay plate protruding rearward from the rear surface is made to penetrate the vertical wall portion and is screwed to the bottom plate of the seat.
[0003]
[Problems to be solved by the invention]
However, in the seat structure having the backrest, when the backrest is moved forward, the gap between the backrest and the vertical wall portion is enlarged, and in some cases, the gap is visible, and the appearance is significantly deteriorated. In addition, rainwater or water used for washing the car is likely to enter the gap, and there is a risk that such water may enter the inside of the seat from the hole through which the stay plate passes. Here, if the length of the convex portion of the vertical wall portion is increased, even if the backrest is moved forward, there is a margin in the overlap length of the convex portion and the backrest, and the above problem can be avoided. However, according to this, the front-back direction of the backrest becomes longer and the backrest becomes larger, and the design of the seat is restricted, resulting in deterioration of appearance.
[0004]
The present invention has been made in view of the above circumstances, and suppresses deterioration of appearance caused by a gap between a backrest and a seat, prevents water from entering the gap, and further reduces the size of the backrest. It is an object of the present invention to provide a motorcycle seat structure that achieves the above.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, in the present invention, a vertical wall portion rising upward is formed at a predetermined position of a seat provided on a vehicle body, and a driver or an occupant sitting on the seat is formed in front of the vertical wall portion. In a motorcycle seat structure in which a backrest that supports the waist from the rear is movably provided in the front-rear direction,
A cover member is provided between the backrest and the vertical wall portion to close a gap generated between the backrest and the vertical wall portion, and the vertical wall portion has a convex portion projecting forward of the vehicle body, and is fitted to the convex portion. A matching recess is formed on the rear surface of the backrest, and the cover member is disposed between the front surface of the projection of the vertical wall portion and the back surface of the recess of the backrest .
[0006]
According to the above configuration, even when the backrest is moved forward, the gap generated between the backrest and the vertical wall portion of the seat is closed by the cover member. Therefore, deterioration of appearance due to the presence of the gap is suppressed, and water is prevented from entering the gap. Further, it is not necessary to increase the size of the backrest in order to reduce the gap, and conversely, the size can be reduced.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
In a preferred embodiment, the vertical wall portion has a convex portion protruding forward of the vehicle body, and a concave portion that fits into the convex portion is formed on a rear surface of the backrest, and the concave portion of the vertical wall portion has a convex portion. The cover member is provided between the front surface and the back surface of the recess of the backrest.
[0008]
In a preferred embodiment, the cover member is formed of an elastic member that expands and contracts in the front-rear direction of the vehicle body.
In a preferred embodiment, the cover member is formed of a flexible material, and is attached to the vertical wall portion and the backrest.
[0009]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0010]
FIG. 1 is a side view of a scooter type motorcycle 1 having a seat structure according to the present embodiment. In the figure, reference numeral 2 denotes a body frame, 3 denotes a power unit, 34 and 52 denote front and rear wheels, 35 denotes a steering wheel, 4 denotes a driver, and a tandem seat behind which a passenger (tandem rider) can sit. This is a resin body cover.
The body frame 2 includes a head pipe 5, one main frame 11 fixed to the center of the head pipe 5 and extending rearward and obliquely downward, and a front end fixed to a lower end of the main frame 11. A pair of left and right side frames 12 extending to the rear of the vehicle body and a front end portion of the head pipe 5 are fixed below the joint of the main frame 11 and at a front end portion of the side frame 12. A pair of left and right down tubes 13 extending substantially to the rear of the vehicle body along substantially the same, a suspension bracket 14 for integrally connecting the rear ends of the side frames 12 and the down tube 13 to each other, and a front end of the suspension bracket 14 at the rear end. A rear frame 15 that is fixed and extends rearward of the vehicle body is fixed to an upper portion of the rear frame 15. It is, and a support pipe 16 and the like to form a substantially triangular and the rear frame 15. The side frame 12 and the down tube 13 are also connected to each other by two vertical pipes 25 fixed to each other, and the left and right side frames 12 are connected to each other by two horizontal pipes 26 fixed to each other. Have been. The body frame 2 is made of a metal material such as steel or aluminum, and the above elements are fixed to each other by welding.
[0011]
A steering shaft 18 passes through the head pipe 5. An upper holder 36 and an under holder 17 are fixed to the upper and lower ends of the steering shaft 18, respectively. The handle 35 is fixed to the upper holder 36, and a pair of left and right front forks 33 is supported by the under holder 17. The front wheel 34 is rotatably supported at the lower end of the front fork 33. At the rear end of the down tube 13, a stand 23 for stably supporting the vehicle body during parking is attached.
[0012]
The power unit 3 is configured such that a V-belt type continuously variable transmission 51 is connected to a water-cooled four-cycle engine 50 whose cylinder shaft is inclined forward. The power unit 3 is swingably supported by the suspension bracket 14 via a link 20. The rear wheel 52 is supported at the rear end of the continuously variable transmission 51, and the power of the engine 50 is transmitted to the rear wheel 52 via the continuously variable transmission 51. A rear cushion 53 extends between the rear end of the continuously variable transmission 51 and the rear frame 15. The swing of the power unit 3 and the rear wheel 52 is buffered by the rear cushion 53. Reference numeral 116 is a radiator of the engine.
[0013]
The seat 4 has a tandem seat portion 4b on which an occupant sits, formed behind a main seat portion 4a on which a driver sits, and is supported above the vehicle body frame 2. The rear tandem seat portion 4b is one step higher than the main seat portion 4a, and a backrest 191 is provided between the two seats 4a and 4b. The backrest 191 is mainly for improving the ride comfort by supporting the waist of the driver, and the arrangement position can be adjusted back and forth according to the height of the driver, the preference of the riding position, and the like. It has become. As shown in FIG. 2, the seat 4 has a hinge plate 250 provided at a lower portion at the front end thereof rotatably coupled to the vehicle body frame 2, and is opened and closed up and down around the front end portion. Thus, it is detachably engaged with the vehicle body via a seat lock (not shown) provided at the rear end.
[0014]
Below the main seat portion 4a of the seat 4, a fuel tank 211 is provided fixed to the vehicle body frame 2. The fuel tank 211 has a fuel supply port 211a projecting obliquely forward at an upper portion of its front end. As shown in FIG. 2, a cap 251 is detachably attached to the fuel supply port 211a. As shown in FIG. 2, a refueling opening 253 that exposes the refueling port 211 a is provided on the front end surface of the seat 4 by a frame-shaped opening cover 252. A fuel lid 215 that opens and closes the fuel supply opening 253 is attached to the opening cover 252. Here, the structure of the fuel lid 215 will be described with reference to FIGS. FIG. 2 is a cross-sectional view of the lid portion, and FIG. 3 is a view of the lid as viewed from the back. FIG. 4 is a detailed view of a lid opening / closing operation portion, and FIG. 5 is a perspective view of the winding spring.
[0015]
The fuel lid 215 is formed in a vertically long and substantially rectangular plate shape. As shown in FIG. 2, a hinge portion 215a formed on a lower edge thereof is rotatably hinged to a lower edge of the opening cover 252. Are combined. The upper edge of the fuel lid 215 is provided with a lever 260 for opening the fuel lid 215 and a hook 270 that is separate from the lever 260 and that is engaged with the opening cover 252 to hold the fuel lid 215 in a closed state. I have.
[0016]
The lever 260 is formed by integrally forming a trapezoidal flange 262 at the tip of an L-shaped lever main body 261, and a bearing 261 a integrally formed at the base end of the lever main body 261 (FIG. 3). Is rotatably mounted on a rotation shaft 280 provided on the back surface of the fuel lid 215. The rotating shaft 280 has its axis arranged in the vehicle width direction, and is attached to the back surface of the fuel lid 215.
[0017]
The hook 270 is formed by integrally forming a hook claw 272 at a distal end of a hook body 271. A bearing 271 a integrally formed at a base end of the hook body 271 is adjacent to the bearing 261 a of the lever body 261. And is rotatably mounted on a rotating shaft 280. The hook 270 is further integrally formed with a protruding piece 270a, and the protruding piece 270a is engaged with the upper surface of the connection concave portion 261C (FIG. 3) on the upper surface side of the lever main body 261.
[0018]
A winding spring 290 that urges the lever 260 and the hook 270 in the direction of arrow P in FIG. 4 is attached to the rotating shaft 280. As shown in FIG. 5, the winding spring 290 is formed by forming a first spring portion 292 and a second spring portion 293 on both sides of a central engaging portion 291 extending straight at the center portion. , 293 are mounted on the rotating shaft 280. The end 292 a of the first spring portion 292 is in contact with the rear surface of the fuel lid 215. FIG. 3 shows a state in which the plate 282 is removed, and the position of the plate is indicated by a broken line. The end 293 a of the second spring portion 293 is engaged with the upper surface of a spring receiver 261 b protruding from the side surface of the lever main body 261. The spring receiver 261b is formed continuously with the connecting recess 261c. Further, the center engaging portion 291 is engaged with the back surface of the hook main body 271.
[0019]
By the action of the winding spring 290, the lever 260 and the hook 270 are constantly urged in the direction of the arrow P in FIG. 4, and in a state where the refueling opening 253 is closed, as shown in FIG. It engages with a protruding piece 254 formed on the opening cover 252. In this state, the lever 260 is held at a position where the flange 262 is flush with the surface of the fuel lid 215. Next, when a finger is inserted into the recess 255 formed in the fuel lid 215 to lift the flange 262 and rotate the lever 260 in the direction of arrow Q, the protrusion of the hook 270 abutting on the connection recess 261c of the lever main body 261 is formed. Via the piece 270a, the hook 270 rotates in the same direction in conjunction with the pressing force of the center engaging portion 291 of the winding spring 290 in the same direction. Thereby, the engagement of the hook claw 272 with the protruding piece 254 is released. From here, when the lever 260 is further pulled, the fuel lid 215 opens.
[0020]
When the lever 260 is released with the fuel lid 215 opened, the end 292a of the spring 292 presses the back surface of the fuel lid 215, and the end 293a of the spring 293 presses the spring receiver 261b of the lever main body 261. Therefore, the lever 260 is pushed inward by this pressing force, and the lever 260 returns to the normal retracted position.
[0021]
Next, when the fuel lid 215 is closed, the hook claw 272 rides on the protruding piece 254, so that the hook 270 once rotates in the direction of arrow Q against the central engaging portion 291 of the winding spring 290. Then, when the user moves over the projecting piece 254, the hook claw 272 is engaged with the projecting piece 254 by rotating in the direction of arrow P by the winding spring 290. As a result, the closed state of the fuel lid 215 is maintained. In this closing operation, when the hook 270 moves over the protruding piece 254, the hook 270 once rotates in the direction of arrow Q and the protruding piece 270a of the hook also rotates in the same direction, but the hook and the lever are separate bodies. Since the protruding piece 270a of the hook is disposed on the upper surface of the connection concave portion 261c of the lever main body 261, it does not act on the lever main body side, but simply separates once from the upper surface of the lever main body. Is held in a retracted state by a spring force.
[0022]
As described above, the lever 260 and the hook 270 are separate bodies, and the hook 270 rotates together with the lever 260 when the fuel lid 215 is opened, and only the hook 270 rotates internally when the fuel lid 215 is closed. And the biasing force of the coil spring 290 can be reduced, and accordingly, the durability can be improved.
[0023]
Next, the vehicle body cover 1a will be described.
As shown in FIG. 1, the vehicle body cover 1a covers almost the entire vehicle body except the front wheel 34, the rear wheel 52, and the seat 4. The vehicle body cover 1a includes a front cover 6 that covers the side from the front of the head pipe 5 and the left and right front forks 33, a transparent windshield 134 fixed above the front cover 6, and a handle cover that covers the handle 35. 43, a leg shield 7 disposed at the rear of the front cover 6 and covering the rear of the head pipe 5, the side frame 12, and the like. A leg shield 7 is disposed continuously below the leg shield 7 and extends rearward of the vehicle body. A foot board 8 that covers the side of the side frame 12, an under cover 9 that is disposed continuously below the foot board 8, extends rearward of the vehicle body, and covers the sides of the left and right down tubes 13. And a side cover 10 disposed continuously from the under cover 9 and covering the power unit 3 from below the seat 4. It is constructed from.
[0024]
The above is the overall structure of the motorcycle 1. Next, the seat 4 according to the present invention will be described in detail with reference to FIGS. 6 is a perspective view of the entire seat, FIG. 7 is an elevation view of a backrest portion, and FIG. 8 is a plan view thereof.
The seat 4 has a seat bottom plate 201 fixed to the lower surface of a seat body 200 having an appropriate cushioning property. The main seat portion 4a and the tandem seat portion 4b are separated by a vertical wall portion 190 forming a step. A backrest 191 is provided in front of the vertical wall portion 190. At the center in the width direction of the vertical wall portion 190, a convex portion 192 having a rectangular cross section protruding forward is integrally formed. On the other hand, a concave portion 191a is formed on the rear surface of the backrest 191 so as to surround the convex portion 192 of the seat 4 and fit into the convex portion 192 (FIG. 6B).
[0025]
The movement adjusting mechanism 193 of the backrest 191 will be described below.
A frame plate 194 forming a concave portion 191a is fixed to a lower portion of a rear surface of the backrest 191. On this frame plate 194, two mounting stays 195 on the left and right are mounted. The mounting stay 195 includes a bent fixing portion 195a on the distal end side, and a position adjusting portion 195b connected to the fixing portion 195a and extending rearward. The fixing portion 195a of each mounting stay is bolted to the frame plate 194 at two locations. A screw hole 195c into which the bolt 210 is screwed is formed at the rear end of the position adjusting portion 195b of each stay.
[0026]
On the other hand, insertion holes 196 into which the mounting stays 195 are movably inserted are formed at two positions on the left and right sides of the front surface of the convex portion 192 of the seat 4. A guide member 198 fixed to the upper surface of the seat bottom plate 201 is provided behind these insertion holes 196 to guide the stay 195 and to fix and hold the position in the left-right direction.
[0027]
In the seat bottom plate 201, a plurality of (five in this example) bolt insertion holes 199 for stay positioning are formed at an equal pitch along the moving direction of the mounting stay 195.
[0028]
According to the movement adjusting mechanism 193, the mounting stay 195 is inserted into each guide hole 196, and the concave portion 191 a of the backrest 191 is fitted to the convex portion 192 of the seat 4 so that the backrest 191 is located in front of the vertical wall portion 190. And the screw holes 195c of the stays 195 are aligned with any of the bolt insertion holes 199 of the seat bottom plate 201, and the bolts 210 passed through the bolt insertion holes 199 are screwed into the screw holes 195c. It is fixed to the seat 4.
[0029]
When the position is changed, the bolt 210 is removed, the stay 195 is moved back and forth, and the stay 195 is fixed to the seat bottom plate 201 with the bolt 210 at an appropriate position in the same manner as described above, so that the height and riding of the driver can be changed. The backrest 191 can be fixed at a position according to the preference of the position. The adjustment and fixing of the position of the backrest 191 are performed in a state where the seat 4 is rotated forward and opened to expose the seat bottom plate 201.
[0030]
In the present embodiment, a cover member 300 for closing a gap generated between the convex portion 192 and the backrest 191 is attached to the front surface 192a of the convex portion 192 of the vertical wall portion 190. The cover member 300 has a rectangular bottom portion 301, an upper portion 302 rising substantially perpendicularly from an upper edge of the bottom portion 301, and a triangular side portion 303 rising substantially perpendicularly from left and right side edges of the bottom portion 301. It was done. The cover member 300 is made of an elastic and flexible material such as rubber, and the rear surface of the bottom portion 301 is attached to the front surface 192 a of the convex portion 192 with the upper portion 302 and the side portion 303 facing the front of the vehicle body. Glued. A penetrating part 304 through which the stay 195 penetrates is formed in the bottom part 301. The penetrating portion 304 is formed of a bellows. This bellows is not bonded to the front surface of the projection 192.
[0031]
When the backrest 191 is moved most forward, the upper portion 302 and the side portion 303 extend forward as shown by the solid line in FIG. 7, and their front edges are formed by the concave portions 191 a of the backrest 191. Located within. When the backrest 191 is moved to the rearmost position (two-dot chain line in FIG. 7), the cover member 300 is deformed so that its upper part 302 is opened outward, so that the entire cover 300 is crushed, and the movement of the backrest 191 is hindered. Absent. When the backrest 191 is moved forward again from this state, the upper part 302 and the side part 303 are elastically restored, and return to the state shown by the solid line in FIG.
[0032]
When the backrest 191 is moved, the mounting stay 195 slides and moves on the bellows of the penetrating portion 304, so that the stay slides smoothly and after the movement, the insertion hole 196 is securely closed by the elasticity of the bellows.
[0033]
Next, the operation of the cover member 300 and the accompanying effects will be described.
When the backrest 191 is arranged at the rearmost position, the cover member 300 is compressed and crushed by the backrest 191 as shown by a two-dot chain line in FIG. Next, when the backrest 191 is moved forward according to the driver's preference, the cover member 300 extends forward following the backrest 191 by the elasticity of the upper portion 302 and the side portion 303. When the backrest 191 is arranged at the frontmost position, as shown by the solid line in FIG. 7, the upper portion 302 and the side portion 303 extend forward, but their front edges are located in the concave portions 191 a of the backrest 191. Therefore, the gap between the front surface 192a of the convex portion 192 of the seat 4 and the periphery of the concave portion 191a of the backrest 191 is closed by the cover member 300 from any angle, and the gap is not visually recognized. Therefore, deterioration of appearance caused by the gap is suppressed. Even if water enters the gap, the water flows down along the outer surface of the cover member 300, and there is no possibility that the water will enter the seat 4 through the insertion hole 196 of the stay 195. Further, since the through hole 196 is closed by the bellows of the stay through portion 394 of the cover member 300, the intrusion of water into the inside is more reliably prevented. In this manner, the gap created between the front surface 192a of the projection 192 and the backrest 191 is closed by the cover member 300, so that it is not necessary to project the projection 192 long forward to close the gap, and as a result, The size of the backrest 191 can be reduced.
[0034]
The cover member 300 is an embodiment of the present invention. For example, the cover member 300 may be formed in a bellows shape and may be capable of expanding and contracting in the front-rear direction. In addition, the cover member is made of a material having only flexibility without being particularly elastic, and is attached to the front surface 192a of the convex portion 192 of the vertical wall portion 190 and the back surface of the concave portion 191a of the backrest 191. It may be configured to expand and contract as the 191 moves.
[0035]
【The invention's effect】
As described above, according to the motorcycle seat structure of the present invention, a cover member that closes a gap generated between a backrest provided movably back and forth and a vertical wall portion of the seat is provided. With this arrangement, even when the backrest is moved forward, the gap created between the backrest and the vertical wall of the seat is closed by the cover member. Therefore, deterioration in appearance due to the presence of the gap is suppressed, and water is prevented from entering the gap, and further, it is not necessary to increase the size of the backrest in order to make the gap smaller, so that downsizing is achieved. And various other effects.
[Brief description of the drawings]
FIG. 1 is a side view of a scooter-type motorcycle provided with a seat according to one embodiment of the present invention.
FIG. 2 is a sectional view showing a structure of a fuel lid.
FIG. 3 is a rear view showing the opening / closing structure of the fuel lid.
FIG. 4 is a sectional side view of the same.
FIG. 5 is a perspective view of a winding spring used in a fuel lid opening / closing structure.
FIG. 6 is a perspective view of a seat.
FIG. 7 is a side sectional view showing a mounting structure of a backrest.
FIG. 8 is a plan view of a main part of the mounting structure of FIG. 7;
[Explanation of symbols]
1: motorcycle, 4: seat, 190: vertical wall, 191: backrest, 191a: concave, 192: convex, 192a: front of convex, 195: mounting stay, 195c: screw hole, 196: insertion hole 198: guide member, 199: bolt insertion hole, 200: seat body, 201: seat bottom plate, 210: bolt, 300: cover member, 301: bottom of cover member, 302: top of cover member, 303: cover member side.

Claims (3)

A vertical wall portion that rises upward is formed at a predetermined position of a seat provided on the vehicle body, and a backrest that supports the waist of a driver or an occupant sitting on the seat from the rear is provided in front of the vertical wall portion in the front-rear direction. In the motorcycle seat structure movably provided,
A cover member for closing a gap generated between the backrest and the vertical wall portion is provided ,
The vertical wall portion has a convex portion projecting forward of the vehicle body, and a concave portion that fits into the convex portion is formed on the rear surface of the backrest, and the front surface of the vertical wall portion convex portion and the concave portion of the backrest are formed. A seat structure for a motorcycle , wherein the cover member is provided between the seat member and a back surface . The motorcycle seat structure according to claim 1 , wherein the cover member is formed of an elastic member that expands and contracts in a front-rear direction of the vehicle body. The motorcycle seat structure according to claim 1 , wherein the cover member is formed of a flexible material, and is attached to the vertical wall portion and the backrest.

Images