JP2014213824A - Seat foldable structure of saddle-riding type vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat foldable structure of a saddle-riding type vehicle capable of improving usability thereof.SOLUTION: A first protrusion 56E is provided on one of a vehicle side hinge 51A and a seat side hinge 56, and a first sliding face 51d sliding in contact with the first protrusion 56E is provided on the another thereof. A recessed dent 51q is formed on the first sliding face 51d, and a long hole 56n through which a hinge pin 64 passes is formed to a vehicle side hinge 51A or a seat side hinge 56. The long hole 56n moves to the front of the vehicle when the first protrusion 56E moves to the dent 51q of the first sliding face 51d, and a tandem seat 20 is supported by the dent 51q to be retained in an open form.

Description

  The present invention relates to a seat opening / closing structure of a saddle-ride type vehicle capable of fixing a seat at an intermediate position between fully closed and fully open.

As a seat opening / closing structure of a saddle-ride type vehicle, there is known a seat hinge in which an upper hinge member provided on a seat side is rotatably supported via a rotation shaft on a lower hinge member provided on a vehicle body side. (For example, refer to Patent Document 1).
Similarly to the seat hinge, the seat-side hinge member is rotatably attached to the vehicle body-side hinge member via a support shaft, and the seat can be fixed at an intermediate position between fully closed and fully open. A stopper is known.

Japanese Patent No. 3593905

The above-described sheet stopper has a structure in which the fixed lock is released by lifting the sheet slightly upward from the state in which the sheet is fixed at the intermediate position, and therefore, improvement in usability when closing the sheet has been desired.
The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a seat opening / closing structure of a saddle-ride type vehicle capable of improving usability.

  In order to solve the above-described problems, the present invention enables a seat (20) on which an occupant is seated to be opened and closed via a seat hinge (31) provided so as to be surrounded by a front portion of the seat (20). The seat hinge (31) includes a vehicle body side hinge (51A) attached to the vehicle body, and a seat side hinge (56) attached to the vehicle body side hinge (51A) via a hinge pin (64) so as to be swingable. In the seat opening / closing structure of the saddle-ride type vehicle provided with the first projecting portion (56E) is provided on one of the vehicle body side hinge (51A) and the seat side hinge (56), and on the other side, A first sliding surface (51d) that slides in contact with the protrusion (56E) is provided, and a concave stepped portion (51q) is formed on the first sliding surface (51d). Hinge (51A) or An elongated hole (56n) through which the hinge pin (64) is passed is formed in the seat side hinge (56), and the elongated hole (56n) has the first projecting portion (56E) as the first sliding surface. When moving to the step part (51q) of (51d), it moves forward of the vehicle, and the seat (20) is supported by the step part (51q) and held open.

In the above configuration, the fitting member (72) fitted to the other side on one side of the vehicle body side hinge (51A) and the seat side hinge (56), and the fitting member (72) are attached to the other side. And a fitting portion in which the fitting member (72) is fitted to the other side of the vehicle body side hinge (51A) and the seat side hinge (56). (71a) may be provided, and the sheet (20) may be supported in the stepped portion (51q) and the fitting member (72) and held in an open state.
In the above configuration, the vehicle body side hinge (51A) or the seat side hinge (56) has a second sliding surface (51t) at a position offset in the vehicle width direction from the first sliding surface (51d). And a second protrusion (56G) at a position offset in the vehicle width direction from the sliding surface (56p) of the first protrusion (56E), and the second protrusion (56G) is the first protrusion (56G). You may make it arrange | position so that it may be pinched | interposed into one sliding surface (51d).

In the above configuration, when the seat (20) is opened and closed, sliding between the first protrusion (56E) and the first sliding surface (51d), the second protrusion (56G), and the first The sliding between the two sliding surfaces (51t) may be switched.
In the above configuration, the first sliding surface (51d) and the second sliding surface (51t) are formed to have different sliding ranges in the opening / closing range of the seat (20). May be.

In the above configuration, when the first protrusion (56E) moves to the step (51q) of the first sliding surface (51d), the seat side hinge (56) moves forward of the vehicle, You may make it the said fitting member (72) fit in the said to-be-fitted part (71a).
In the above configuration, the position of the sheet when the first projecting portion (56E) moves to the stepped portion (51q) between the fully closed position and the fully open position of the sheet (20) is an intermediate position. The first sliding surface (51d) has a sliding range between the fully closed position and the intermediate position, and the second sliding position between the intermediate position and the fully open position. You may make it have a sliding range of a surface (51t).

  In the present invention, a first protrusion is provided on one of the vehicle body side hinge and the seat side hinge, and on the other side, a first sliding surface that is in contact with and slides on the first protrusion is provided. A concave step portion is formed on one sliding surface, and a long hole through which a hinge pin is passed is formed in the vehicle body side hinge or the seat side hinge, and the first protruding portion is formed on the first sliding surface. When moving to the stepped portion, it moves to the front of the vehicle, and the seat is supported by the stepped portion and held in the open state. Therefore, the opened seat is moved in the closing direction without once moving further in the opening direction. The sheet can be easily closed from the holding position using its own weight only by the operation. Therefore, the usability of the saddle riding type vehicle can be improved.

  Further, a fitting member that fits the other side and an elastic member that biases the fitting member to the other side are provided on one side of the vehicle body side hinge and the seat side hinge, and the vehicle body side hinge and the seat On the other side of the side hinge, a fitted portion to which the fitting member is fitted is provided, and the seat is supported by the stepped portion and the fitting member and held in the open state, so that the elastic force of the elastic member The sheet holding position can be easily released. In addition, the elastic member can be reduced in size, and weight reduction and cost reduction can be achieved. Furthermore, since the fitting member is fitted and held in the fitted portion, it can be a holding means with a click feeling, and it can be easily recognized that the sheet is in the holding state.

  In addition, the vehicle body side hinge or the seat side hinge includes the second sliding surface at a position offset in the vehicle width direction from the first sliding surface, and extends from the first sliding surface of the first protrusion in the vehicle width direction. Since the second projecting portion is provided at the offset position, and the second projecting portion is disposed so as to be sandwiched between the first sliding surfaces, the vehicle body side hinge and the seat side hinge are relatively moved in the vehicle width direction. Therefore, the seat can be reliably engaged with the vehicle body side while restraining the seat from swinging in the vehicle width direction.

Further, when the seat is opened and closed, the sliding between the first projecting portion and the first sliding surface and the sliding between the second projecting portion and the second sliding surface are switched. Therefore, the layout can be reduced with the height of the hinge suppressed. Therefore, the seat height can be set low and the boarding / exiting performance can be improved.
Further, since the first sliding surface and the second sliding surface are formed so as to have different sliding ranges in the opening / closing range of the sheet, as the sheet transitions from the intermediate holding state to the sheet full opening state. The seat can be moved upward, and a structure having a track that avoids the vehicle body side can be obtained.

Further, when the first projecting portion moves to the stepped portion of the first sliding surface, the seat side hinge moves to the front of the vehicle and the fitting member fits into the fitted portion, so that the stepped portion has a shallow step. It can be a structure. Thus, the sheet can be held more reliably by both the movement of the first protrusion to the stepped portion and the fitting of the fitting member to the fitted portion.
Further, the first position between the fully closed position and the intermediate position when the position of the sheet when the first protrusion moves to the step portion between the fully closed position and the fully open position of the sheet is an intermediate position. Since it has a sliding range of the sliding surface and has a sliding range of the second sliding surface between the intermediate position and the fully open position, the sheet position, particularly the intermediate position where the sheet is held in the opening and closing range of the sheet In addition, the degree of freedom in design such as the height at the fully open position can be increased.

1 is a left side view of a motorcycle including a seat opening / closing structure according to an embodiment of the present invention. It is a perspective view showing a sheet opening and closing structure. It is a figure corresponded in the III-III sectional view taken on the line of FIG. 1 which shows a storage box and a seat hinge. It is a side view which shows a seat hinge. It is the VV sectional view taken on the line of FIG. It is the VI-VI sectional view taken on the line of FIG. It is explanatory drawing which shows the shape of a vehicle body side hinge and a seat side hinge. It is the 1st operation view showing an operation of a seat hinge. It is a 2nd operation | movement figure which shows the effect | action of a seat hinge. It is a 3rd operation | movement figure which shows the effect | action of a seat hinge. It is the 4th operation figure showing an operation of a seat hinge.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the description, descriptions of directions such as front and rear, right and left and up and down are the same as directions with respect to the vehicle body unless otherwise specified. Further, in each figure, the symbol FR indicates the front of the vehicle body, the symbol UP indicates the upper side of the vehicle body, and the symbol LE indicates the left side of the vehicle body.
FIG. 1 is a left side view of a motorcycle 10 having a seat opening / closing structure according to an embodiment of the present invention.
The motorcycle 10 is supported by a front fork 12 that is steered by a bar handle 11, a front wheel 14 that is supported by a lower end portion of the front fork 12 via an axle 13, and a lower center portion of a vehicle body that can swing up and down. A power unit 16 serving as a drive source, a rear wheel 18 attached to an output shaft 17 provided at the rear end of the power unit 16, and an openable / closable part provided from the upper center part of the vehicle body to the upper rear part of the vehicle body This is a scooter-type saddle-type vehicle including a tandem seat 20 and a vehicle body cover 21 that covers a vehicle body frame serving as a skeleton.

The front wheel 14 is covered with a front fender 23 from above. A main stand 24 is attached to the lower portion of the power unit 16, and a rear end portion of the power unit 16 is connected to a rear portion of the vehicle body frame via a cushion unit 26. The rear wheel 18 is covered with a rear fender 27 from above.
The tandem seat 20 is integrally formed with a driver's seat 20A on which the driver sits and a passenger's seat 20B disposed behind the driver's seat 20A so that the passenger can sit down. A storage box is disposed below the tandem sheet 20. The front end portion of the tandem seat 20 is connected to the upper portion of the front end portion of the storage box by the seat hinge 31, and the rear end portion of the tandem seat 20 is released to the seat lock mechanism provided at the rear end portion of the storage box in the closed state. Engageable. The tandem seat 20 opens from the fully closed position A shown in the figure to the fully open position C indicated by an imaginary line, and is held open at an intermediate position B between the fully closed position A and the fully open position C in addition to the fully open position C. Is possible.

  The vehicle body cover 21 includes a front cover 33 provided at the front of the vehicle body, and a pair of left and right leg shields 34 and 34 (leg shields on the front side) disposed behind the front cover 33 and covering the front of the driver's legs. 34), a center cover 36 extending from between the left and right leg shields 34, 34 to below the front end of the tandem seat 20, and a pair of left and right floor steps extending downward and rearward from the lower ends of the left and right leg shields 34, 34. 37, 37 (only the front side floor skirt 37 is shown), and a pair of left and right floor skirts 38, 38 (only the front side floor skirt 38 is shown) extending downward from both side edges of the left and right floor steps 37, 37; A pair of left and right body covers 41, 41 (hands) extending diagonally rearward and upward from rear upper portions of the left and right floor steps 37, 37 Comprising only shown) and body cover 41 side.

  A wind screen 43 is provided on the upper portion of the front cover 33. A side stand 44 attached to the body frame is disposed on the side of the floor skirt 38. A grab rail 46 is disposed so as to surround the side and rear of the rear portion of the tandem seat 20 above the rear portion of the body cover 41. A tail lamp 47 is disposed between the rear ends of the left and right body covers 41, 41.

FIG. 2 is a perspective view showing the seat opening / closing structure.
A vehicle body side hinge 51A is integrally formed at the upper front end portion of the storage box 51, and a seat side hinge 56 is attached to the lower front end portion of the bottom plate 55 constituting the bottom portion of the tandem seat 20 (see FIG. 1). The vehicle body side hinge 51 </ b> A and the seat side hinge 56 are connected via a hinge pin 64.
The vehicle body side hinge 51 </ b> A is disposed in front of the vehicle body with respect to the opening 51 b of the storage box 51, and has a plurality of sliding surfaces that slide with the seat side hinge 56. The seat side hinge 56 has a plurality of protrusions that slide with the vehicle body side hinge 51A. The vehicle body side hinge 51A, the seat side hinge 56, and the hinge pin 64 will be described in detail with reference to FIG.

3 is a view corresponding to the sectional view taken along the line III-III of FIG. 1 showing the storage box 51 and the seat hinge 31. The seat hinge 31 when the seat 20 (not shown in FIG. 3) is opened to the intermediate position B is shown. Is shown.
The storage box 51 includes a box front portion 61 in which a vehicle body side hinge 51A is integrally formed. The box front portion 61 is integrally formed with a pair of left and right box convex portions 61c and 61d so as to protrude to the front of the vehicle body.
The seat hinge 31 includes a vehicle body side hinge 51A, a seat side hinge 56, and a hinge pin (not shown) that supports the seat side hinge 56 so as to be swingable with respect to the vehicle body side hinge 51A.
The vehicle-body-side hinge 51A includes a pair of left and right hinge bulging portions 51c and 51c that are integrally formed on the inner edges of the box convex portions 61c and 61d of the box front portion 61 in the vehicle width direction.
The hinge bulges 51c and 51c have a pair of left and right sides formed so as to have a width inward in the vehicle width direction from the inner edge in the vehicle width direction of each of the box protrusions 61c and 61d and to bend while curving convexly in the vehicle longitudinal direction The first sliding surfaces 51d, 51d, inner side surfaces 51f, 51f adjacent to the inner edges of these outer sliding surfaces 51d, 51d, and inner edges in the vehicle width direction from the inner edges of these inner side surfaces 51f, 51f And a pair of left and right second sliding surfaces 51t, 51t formed to extend while curving convexly in the longitudinal direction of the vehicle body. Reference numerals 51h and 51h are outer surfaces of the hinge bulging portions 51c and 51c.
A front wall 61e is integrally provided between the box convex portions 61c and 61d of the box front portion 61, and the rear end portions of the first sliding surfaces 51d and 51d and the second sliding surfaces 51t and 51t are formed on the front wall 61e. Each is connected.

The seat-side hinge 56 includes a top wall 56a attached to the bottom plate 55 (see FIG. 2), and a pair of left and right extending from the top wall 56a to the outside of the left and right hinge bulging portions 51c and 51c of the vehicle body side hinge 51A in the vehicle width direction. Side walls 56b, 56c, first protrusions 56E provided to slide on the first sliding surfaces 51d, 51d of the vehicle body side hinge 51A on the inner side in the vehicle width direction than the side walls 56b, 56c, A second projecting portion 56G extending from the center in the vehicle width direction of the first projecting portion 56E to the left and right hinge bulging portions 51c of the vehicle body side hinge 51A is integrally formed.
Long holes are formed in the left and right side walls 56b and 56c, respectively, and hinge pins 64 (see FIG. 4) penetrating the vehicle body side hinge 51A in the vehicle width direction are inserted into the left and right long holes.

  Bolt insertion holes 56j are formed in the upper wall 56a of the seat side hinge 56 in the vicinity of the side walls 56b and 56c. A bolt for attaching the seat side hinge 56 to the bottom plate 55 (see FIG. 2) is passed through the bolt insertion hole 56j.

The first protrusion 56E of the seat-side hinge 56 is formed such that the left-right width is smaller than the distance between the left and right box projections 61c, 61d of the box front portion 61 in the vehicle width direction. When the tandem seat 20 (see FIG. 1) is fully closed, a part of the first projecting portion 56E is disposed between the box convex portions 61c and 61d.
The second protruding portion 56G is inserted between the left and right hinge bulging portions 51c of the vehicle body side hinge 51A, and between the inner side surface 51f of the hinge bulging portion 51c and the outer side surfaces 56k, 56k of the second protruding portion 56G. A minute gap is formed. Accordingly, the position of the second protrusion 56G in the vehicle width direction and the movement in the vehicle width direction can be restricted by the hinge bulging portions 51c and 51c, and consequently the left and right sides of the seat side hinge 56 and the tandem seat 20 (see FIG. 1). The shake can be suppressed.

FIG. 4 is a side view showing the seat hinge 31.
The vehicle body side hinge 51A has a pin fitting hole 51k formed in the lower part of the left and right hinge bulging portions 51c along the vehicle width direction, and a hinge pin 64 is press-fitted and fixed to the pin fitting hole 51k, for example. . In the upper part of the left and right hinge bulging portions 51c, receiving holes 51n for accommodating a part of a positioning mechanism (details will be described later) for positioning the seat side hinge 56 with respect to the vehicle body side hinge 51A are respectively provided along the vehicle width direction. Open.
The side walls 56b and 56c of the seat side hinge 56 (only the front side wall 56b is shown) are each integrally provided with a side protrusion 56m that protrudes outward in the vehicle width direction (front and back direction on the paper surface). An elongated hole 56n into which the hinge pin 64 is inserted is formed in the side walls 56b and 56c in front of the side protrusion 56m. By forming the long hole 56n in this way, the seat side hinge 56 is moved not only in the swing direction but also along the long axis direction of the long hole 56n in the front-rear direction, the up-down direction, etc. with respect to the vehicle body side hinge 51A. It becomes possible to make it.

51 d of 1st sliding surfaces of 51 A of vehicle body side hinges are equipped with the hollow part 51q formed in the concave curved surface in the upper part. In a state where the first protrusion 56E of the seat side hinge 56 is in contact with the recess 51q, the seat side hinge 56 is positioned and held with respect to the vehicle body side hinge 51A. That is, in this state, as shown in FIG. 1, the tandem sheet 20 is held in a half-open state at the intermediate position B (see FIG. 1).
The first protrusion 56E of the seat-side hinge 56 is a convexly curved seat-side first sliding surface 56p that slides on the first sliding surface 51d (only the front-side seat-side first sliding surface 56p is shown). Is provided.

FIG. 5 is a cross-sectional view taken along the line VV in FIG. 4 and is a view for explaining the positioning mechanism 70 of the seat hinge 31.
The seat hinge 31 includes a vehicle body side hinge 51A, a seat side hinge 56, a hinge pin 64, and a positioning mechanism 70 that positions the seat side hinge 56 at an intermediate position within a swing range with respect to the vehicle body side hinge 51A.
51 A of vehicle body side hinges are respectively provided with the accommodation hole 51n in the hinge bulging part 51c of right and left. Further, the seat side hinge 56 has a recess 56r formed on the inner side surface 56q of the left and right side walls 56b, 56c. The positioning mechanism 70 is provided in the accommodation hole 51n and the recess 56r.

The positioning mechanism 70 includes a metal plate 71 provided in the recess 56 r of the seat side hinge 56, a metal ball 72 that slides on the plate 71, and a coil spring 73 that biases the ball 72 toward the plate 71. It consists of. The ball 72 and the coil spring 73 are accommodated in the accommodation hole 51n.
In the plate 71, the positioning hole 71a is opened, and when the plate 71 and the ball 72 slide, the ball 72 enters the positioning hole 71a, whereby the seat side hinge 56 is positioned with respect to the vehicle body side hinge 51A. .

6 is a cross-sectional view taken along line VI-VI in FIG.
The vehicle body side hinge 51A includes a first sliding surface 51d and a second sliding surface 51t that are curved in a convex manner directed obliquely upward and rearward of the vehicle, and a hinge pin 64 is fixed.
The seat-side hinge 56 has a first projecting portion 56E (only one first projecting portion 56E only) formed with a seat-side first sliding surface 56p (only one seat-side first sliding surface 56p is shown) curved in a concave shape. And a second protrusion 56G, 56G formed with a substantially planar sheet-side second sliding surface 56s (only one sheet-side second sliding surface 56s is shown). Furthermore, the seat side hinges 56 are respectively formed with elongated holes 56n on the side walls 56c (only one side wall 56c is shown).

The seat side hinge 56 has a plurality of stud bolts 75 attached to the front recessed portion 55a of the bottom plate 55, and the seat side hinge 56 is attached to the bottom wall 55b of the front recessed portion 55a with these stud bolts 75 and a plurality of nuts 76. It has been. Reference numeral 77 denotes a rubber endless seal member attached to the bottom plate 55. The seal member 77 is applied to a seal surface 51r formed so as to surround the opening 51b (see FIG. 2) of the storage box 51, and dust and the like enter the storage box 51 when the tandem sheet 20 is closed. To prevent.
The plate 71 constituting the positioning mechanism 70 (see FIG. 7B) is integrally formed with an upper protruding portion 71b protruding upward at the upper portion. The upper protrusion 71 b is inserted into the upper recess 56 t provided at the upper portion of the seat side hinge 56, thereby preventing the plate 71 from rotating with respect to the seat side hinge 56.

FIG. 7 is an explanatory diagram showing the shapes of the vehicle body side hinge 51 </ b> A and the seat side hinge 56. 7A is a diagram for mainly explaining the vehicle body side hinge 51A, and FIG. 7B is a diagram for mainly explaining the seat side hinge 56.
In FIG. 7 (A), the first sliding surface 51d of the vehicle body side hinge 51A has a lower sliding surface 51v formed at the lower rear portion of the hinge bulging portion 51c and an upper end portion of the first sliding surface 51v. And a recess 51q formed so as to be continuous.
The second sliding surface 51t of the vehicle body side hinge 51A is formed substantially horizontally and substantially flatly so as to be continuous with the lower sliding surface 51w formed in a substantially arc shape and the upper end portion of the lower sliding surface 51w. And an upper sliding surface 51x. The upper sliding surface 51x can position and hold the second protrusion 56G of the seat side hinge 56 at the fully opened position of the tandem seat 20 (see FIG. 1).

In FIG. 7B, the positioning hole 71a of the plate 71 is formed in a long hole shape, an elliptical shape, or a similar shape. Therefore, when the ball 72 enters the positioning hole 71a, the edge of the positioning hole 71a and the ball 72 can be brought into point contact.
Therefore, the tandem seat 20 is closed from the intermediate position to the fully closed position or from the intermediate position while securing the holding force at the intermediate position of the tandem seat 20 (see FIG. 1) by the engagement of the ball 72 with the positioning hole 71a. When the ball 72 is further opened to the fully open position, the ball 72 can be easily detached from the positioning hole 71a. Therefore, the operation force can be reduced and the usability can be improved.
Further, the pin fitting hole 51k (see FIG. 7A) of the vehicle body side hinge 51A and the position of the elongated hole 56n of the seat side hinge 56, the fixing position of the plate 71 with respect to the seat side hinge 56, the position of the positioning hole 71a, etc. When the positional relationship between the positioning hole 71a and the ball 72 varies due to the production variation, the variation can be absorbed by forming the elongated hole shape, the elliptical shape, or the like.

Next, the operation of the seat hinge 31 described above will be described.
FIG. 8 is a first action diagram showing the action of the seat hinge 31. FIG. 8A is an operation diagram showing the seat hinge 31 when the tandem seat 20 is fully closed, and FIG. 8B is an operation diagram showing a state in which the tandem seat 20 starts to open.
In FIG. 8A, the first protrusion 56E of the seat side hinge 56 is in contact with the first sliding surface 51d of the vehicle body side hinge 51A. At this time, the hinge pin 64 is located at the front end of the elongated hole 56n.
As shown in FIG. 8B from the state of FIG. 8A, when the tandem seat 20 opens in the direction of the arrow D, the seat-side hinge 56 is centered on the hinge pin 64 positioned at the front end of the elongated hole 56n. The first protrusion 56E of the seat side hinge 56 moves upward while sliding with the first sliding surface 51d of the vehicle body side hinge 51A.

FIG. 9 is a second action diagram showing the action of the seat hinge 31.
In FIG. 9A, the tandem seat 20 further opens in the direction of arrow E from the state of FIG. 8B, and the first protrusion 56E of the seat side hinge 56 is the lower sliding surface of the first sliding surface 51d. It is a figure which shows the state which has contacted the upper end part of 51v. At this time, the seat-side hinge 56 rotates around the hinge pin 64 located at the front end of the elongated hole 56n.
9B, the tandem seat 20 is further opened in the direction of arrow F from the state of FIG. 9A, and the first projecting portion 56E of the seat side hinge 56 is the lower sliding surface of the first sliding surface 51d. It is a figure which shows the state which moved to the rear-end part of the hollow part 51q from 51v. At this time, along with the movement of the first projecting portion 56E, the elongated hole 56n of the seat side hinge 56 moves forward of the vehicle with respect to the hinge pin 64 as indicated by the white arrow, and the hinge pin 64 moves to the elongated hole 56n. Located in the middle of the vehicle longitudinal direction.

FIG. 10 is a third action diagram showing the action of the seat hinge 31.
In FIG. 10A, the tandem seat 20 is further opened from the state of FIG. 9B, and as indicated by an arrow G, the first protrusion 56E of the seat side hinge 56 is substantially in the vehicle longitudinal direction of the recess 51q. It is a figure which shows the state which moved to the center. The first protrusion 56E is positioned by the recess 51q, and the ball 72 enters the positioning hole 71a of the plate 71 (see FIG. 7B) moved together with the seat-side hinge 56, so that the tandem seat 20 is fully It is held at an intermediate position between the closed position and the fully opened position.
At this time, the elongated hole 56n of the seat side hinge 56 moves further forward of the vehicle with respect to the hinge pin 64 as indicated by the white arrow, and the hinge pin 64 is located at the rear end portion of the elongated hole 56n. At this time, the second projecting portion 56G of the seat side hinge 56 starts to contact the upper portion of the lower sliding surface 51w of the second sliding surface 51t of the vehicle body side hinge 51A.

As described above, the seat hinge 31 holds the tandem seat 20 at the intermediate position by both (1) the first protrusion 56E being positioned by the recess 51q and (2) the ball 72 entering the positioning hole 71a. Has a structure.
For example, in the case of only the structure of (1), since the tandem sheet is held only by its own weight and the frictional force of each part, the holding at the intermediate position is not reliable. Further, in the case of (2) only, since the load of the coil spring 73 (see FIG. 5) for urging the ball to the positioning hole cannot be maintained, the tandem seat is increased when the load of the coil spring 73 is increased. A large operating force is required to release the holding at the intermediate position.
On the other hand, since the seat hinge 31 has both the structures (1) and (2), the load of the coil spring 73 is further reduced while the holding of the tandem seat 20 is ensured, and the tandem seat 20. It is possible to release the holding at the intermediate position with a smaller operating force.

Conventionally, when the tandem sheet 20 is closed from the state shown in FIG. 10A, it is necessary to lift the tandem sheet 20 upward.
On the other hand, in the present embodiment, in FIG. 10A, the first protrusion 56E of the seat side hinge 56 is replaced with the hollow portion of the vehicle body side hinge 51A simply by applying an operating force to the tandem seat 20 in the closing direction. As shown in FIG. 9 (B), the center part of 51q is moved to the rear end part of the recessed part 51q. Further, as shown in FIG. 9 (A), the lower sliding surface of the first sliding surface 51d. It is possible to move to 51v.
If the first projecting portion 56E is moved to the lower sliding surface 51v, the tandem sheet 20 is closed by its own weight. Thus, in this embodiment, the tandem seat 20 can be easily closed from the intermediate position, and usability can be improved.

  10B, the tandem seat 20 is further opened from the state of FIG. 10A, and the second projecting portion 56G of the seat side hinge 56 is the second sliding surface of the vehicle body side hinge 51A as indicated by the arrow H. FIG. It is a figure which shows the state which moved upwards, sliding with 51t. At this time, the 1st protrusion part 56E of the seat side hinge 56 leaves | separates from the hollow part 51q of 51 A of vehicle body side hinges. The long hole 56n of the seat side hinge 56 moves to the rear of the vehicle with respect to the hinge pin 64 as indicated by the white arrow, and the hinge pin 64 is located in the middle of the long hole 56n in the vehicle front-rear direction.

FIG. 11 is a fourth action diagram showing the action of the seat hinge 31.
When the tandem seat 20 is further opened from the state shown in FIG. 10B, the second projecting portion 56G of the seat-side hinge 56 has an upper sliding surface of the vehicle-side hinge 51A as indicated by an arrow J. Further, the tandem sheet 20 is leaned against the bar handle 11 (see FIG. 1), and the fully opened state of the tandem sheet 20 is maintained.
At this time, the second protrusion 56G is substantially horizontal, the upper sliding surface 51x is also substantially horizontal, and the hinge pin 64 is located at the lower end of the elongated hole 56n as shown in the drawing. Therefore, the tandem seat 20 can be prevented from swinging in the vehicle front-rear direction and the vehicle width direction, and the tandem seat 20 can be satisfactorily held in a fully open state in which it stands up almost vertically.
Further, since the seat side hinge 56 and the tandem seat 20 are lifted, a structure in which the front end (lower end in the figure) of the tandem seat 20 has a track that avoids the vehicle body cover 21 (see FIG. 1) can be achieved. By adopting a structure in which the tandem seat 20 is lifted when fully opened as described above, the height of the tandem seat 20 when fully closed can be set lower, and the boarding / exiting performance can be improved.

As shown in FIGS. 1, 2, 4, and 10, a seat hinge 31 is provided so that a tandem seat 20 as a seat on which an occupant is seated is surrounded by a front portion of the tandem seat 20. The seat hinge 31 includes a vehicle body side hinge 51A attached to the vehicle body, and a seat side hinge 56 attached to the vehicle body side hinge 51A via a hinge pin 64 so as to be swingable. In the seat opening / closing structure of the motorcycle 10 as the type vehicle, the first protrusion 56E is provided on one of the vehicle body side hinge 51A and the seat side hinge 56, and the other is in contact with the first protrusion 56E and sliding. Moving first sliding surface 51d
A recess 51q as a concave stepped portion is formed on the first sliding surface 51d, and a long hole 56n through which the hinge pin 64 is passed is formed in the vehicle body side hinge 51A or the seat side hinge 56. The elongated hole 56n moves forward of the vehicle when the first projecting portion 56E moves to the recessed portion 51q of the first sliding surface 51d, and the tandem seat 20 is supported by the recessed portion 51q and held open. Therefore, the tandem sheet 20 can be easily closed from the holding position using its own weight by only moving the tandem sheet 20 in the closing direction without first moving the tandem sheet 20 in the opening direction. Therefore, the usability of the motorcycle 10 can be improved.

  Further, as shown in FIGS. 5 and 10, a ball 72 as a fitting member fitted to one side of the vehicle body side hinge 51A and the seat side hinge 56 and the other side, and the ball 72 to the other side. A coil spring 73 as an elastic member to be urged is provided, and a positioning hole 71a as a fitted portion into which the ball 72 is fitted is provided on the other side of the vehicle body side hinge 51A and the seat side hinge 56. Since the tandem sheet 20 is supported by the recess 51q and the ball 72 and is held in the open state, the elastic force of the coil spring 73 can be suppressed, and the holding position of the tandem sheet 20 can be easily released. . Moreover, the coil spring 73 can be reduced in size, and weight reduction and cost reduction can be achieved. Furthermore, since the ball 73 is fitted and held in the positioning hole 71a, it can be a holding means with a click feeling, and it can be easily recognized that the tandem sheet 20 is in the holding state.

  Further, as shown in FIG. 3, the vehicle body side hinge 51A or the seat side hinge 56 includes the second sliding surface 51t at a position offset in the vehicle width direction from the first sliding surface 51d, and the first protrusion. The second projecting portion 56G is provided at a position offset in the vehicle width direction from the seat side first sliding surface 56p as the sliding surface of the portion 56E, and the second projecting portion 56G is formed on the left and right first sliding surfaces 51d. Since the vehicle body side hinge 51A and the seat side hinge 56 are arranged so as to be sandwiched, the relative movement of the tandem seat 20 in the vehicle width direction can be restricted, and the tandem seat 20 can be prevented from swinging in the vehicle width direction. 20 can be reliably engaged with the vehicle body side.

  Further, as shown in FIGS. 9A and 9B and FIGS. 10A and 10B, when the tandem seat 20 is opened and closed, the sliding between the first protrusion 56E and the first sliding surface 51d is performed. And the sliding between the second projecting portion 56G and the second sliding surface 51t are switched, so that the first sliding surface 51d and the second sliding surface 51t are switched in the vehicle width direction. The layout can be reduced in height. Therefore, the height of the tandem seat 20 can be set low, and the boarding / exiting ability can be improved.

  Further, since the first sliding surface 51d and the second sliding surface 51t are formed to have different sliding ranges in the opening / closing range of the tandem sheet 20, the tandem sheet 20 is moved from the intermediate holding state. As the tandem seat 20 rotates to the fully open position, the tandem seat 20 can be moved upward, and the tandem seat 20 can be prevented from interfering with the vehicle body.

  Further, when the first projecting portion 56E moves from the lower sliding surface 51v of the first sliding surface 51d to the recessed portion 51q, the seat side hinge 56 moves forward of the vehicle and the ball 72 fits in the positioning hole 71a. Even if the level difference (indentation) of the depression 51q is shallow, it is possible to suppress the first protrusion 56E from coming off the depression 51q due to the weight of the tandem sheet 20 or the like. Further, the elastic force of the coil spring 73 can be suppressed. Thus, the tandem seat 20 can be more reliably held by both the movement of the first protrusion 56E to the recess 51q and the fitting of the ball 72 to the positioning hole 71a.

  Further, when the position of the tandem seat 20 when the first protrusion 56E moves to the recess 51q between the fully closed position and the fully open position of the tandem seat 20 is set to the intermediate position, the intermediate position is changed from the fully closed position to the intermediate position. The first sliding surface 51d has a sliding range, and the second sliding surface 51t has a sliding range from the intermediate position to the fully open position. The degree of freedom in design such as the height of the position of the sheet 20, particularly the intermediate position where the tandem sheet 20 is held and the fully open position can be increased.

The above-described embodiment is merely an aspect of the present invention, and can be arbitrarily modified and applied without departing from the gist of the present invention.
For example, in the above embodiment, as shown in FIG. 6, the first sliding surface 51 d and the second sliding surface 51 t are provided on the vehicle body side hinge 51 </ b> A, and the first protruding portion 56 </ b> E and the first sliding surface 51 t are provided on the seat side hinge 56. However, the present invention is not limited to this, and a portion corresponding to the first protrusion 56E and the second protrusion 56G is provided in the vehicle body side hinge 51A, and the first sliding surface 51d is provided in the seat side hinge 56. And a portion corresponding to the second sliding surface 51t may be provided.

As shown in FIG. 5, the positioning hole 71 a into which the ball 72 is fitted is provided in the plate 71. .
Further, the receiving hole 51n, the ball 72, and the coil spring 73 are provided in the vehicle body side hinge 51A, and the plate 71 is provided in the seat side hinge 56. However, the present invention is not limited thereto, and the plate 71 is provided in the vehicle body side hinge 51A. The hinge 56 may be provided with a hole corresponding to the accommodation hole 51n, a ball 72, and a coil spring 73.
The present invention is also applicable to saddle-ride type vehicles other than the motorcycle 10. The saddle riding type vehicle includes all vehicles that ride on the vehicle body, and includes not only motorcycles (including motorbikes and scooters) but also three-wheeled vehicles and four-wheeled vehicles classified as ATVs (roughly terrain vehicles). It is a vehicle including a wheeled vehicle.

10 Motorcycles (saddle-ride type vehicles)
20 Tandem seat (sheet)
31 Seat hinge 51 Storage box 51A Car body side hinge 51d First sliding surface 51q Recessed part (step part)
51t Second sliding surface 56 Seat side hinge 56E First projecting portion 56G Second projecting portion 56n Slot 56p Seat side first sliding surface (sliding surface)
56s Seat side second sliding surface (sliding surface)
64 Hinge Pin 70 Positioning Mechanism 71a Positioning Hole (Fitted Part)
72 balls (fitting member)
73 Coil spring (elastic member)

Claims (7)

The seat (20) on which the occupant sits can be opened and closed via a seat hinge (31) provided so as to be surrounded by the front portion of the seat (20), and the seat hinge (31) is attached to the vehicle body. In a seat opening / closing structure for a saddle-ride type vehicle, comprising a vehicle body side hinge (51A) and a seat side hinge (56) swingably attached to the vehicle body side hinge (51A) via a hinge pin (64). ,
A first protrusion (56E) is provided on one of the vehicle body side hinge (51A) and the seat side hinge (56), and the other is in contact with and slides on the first protrusion (56E). A first sliding surface (51d) is provided, and a concave stepped portion (51q) is formed on the first sliding surface (51d).
An elongated hole (56n) through which the hinge pin (64) is passed is formed in the vehicle body side hinge (51A) or the seat side hinge (56), and the elongated hole (56n) is formed in the first protrusion (56E). ) Moves to the front of the vehicle when moving to the stepped portion (51q) of the first sliding surface (51d),
The seat opening / closing structure for a saddle-ride type vehicle, wherein the seat (20) is supported by the stepped portion (51q) and held in an open state.   A fitting member (72) fitted to the other side on one side of the vehicle body side hinge (51A) and the seat side hinge (56), and an elasticity for biasing the fitting member (72) to the other side. And a fitted portion (71a) in which the fitting member (72) is fitted to the other side of the vehicle body side hinge (51A) and the seat side hinge (56). The saddle-ride type vehicle according to claim 1, wherein the seat (20) is supported by the step portion (51q) and the fitting member (72) and is held in an open state. Seat opening and closing structure.   The vehicle body side hinge (51A) or the seat side hinge (56) includes a second sliding surface (51t) at a position offset in the vehicle width direction from the first sliding surface (51d). A second protrusion (56G) is provided at a position offset in the vehicle width direction from the sliding surface (56p) of the first protrusion (56E), and the second protrusion (56G) is the first sliding surface (51d). The seat opening / closing structure for a saddle-ride type vehicle according to claim 1 or 2, wherein the seat opening / closing structure is disposed so as to be sandwiched between the two.   When the seat (20) is opened and closed, the sliding between the first protrusion (56E) and the first sliding surface (51d), the second protrusion (56G), and the second sliding surface (51t) The seat opening / closing structure for a saddle-ride type vehicle according to claim 3, wherein the sliding between the two is switched.   The first sliding surface (51d) and the second sliding surface (51t) are formed to have different sliding ranges in the opening / closing range of the seat (20). The seat opening / closing structure of the saddle-ride type vehicle according to claim 4.   When the first protrusion (56E) moves to the step (51q) of the first sliding surface (51d), the seat-side hinge (56) moves forward of the vehicle, and the fitting member (72 The seat opening / closing structure of the saddle-ride type vehicle according to any one of claims 2 to 5, wherein the seat is fitted into the fitted portion (71a).   When the position of the sheet when the first projecting portion (56E) is moved to the stepped portion (51q) between the fully closed position and the fully open position of the sheet (20) is an intermediate position, The first sliding surface (51d) has a sliding range between the fully closed position and the intermediate position, and the second sliding surface (51t) slides between the intermediate position and the fully open position. The seat opening / closing structure for a saddle-ride type vehicle according to claim 5 or 6, wherein the seat opening / closing structure has a moving range.

Images