JP5437957B2 - Seat hinge structure - Google Patents

Description

  The present invention relates to a seat hinge structure for a motorcycle or the like.

2. Description of the Related Art Conventionally, scooter type motorcycles are provided with a luggage box provided below a seat on which a driver is seated and having an upper opening for storing luggage such as a helmet. In such a motorcycle, the seat is fixed to the luggage box via the seat hinge, and the opening at the top of the luggage box is opened and closed by turning the seat around the seat hinge as a pivot. .
There has also been proposed a motorcycle equipped with a seating detection function for detecting the seating of a driver on a seat.

  For example, Patent Document 1 includes a first hinge member that is attached to the luggage box side and has a pin support hole having a long hole shape that is long in the vertical direction, and a hinge pin that is attached to the seat side and is inserted through the pin support hole. There has been proposed a motorcycle including a seat hinge structure including a second hinge member and switch means for detecting the vertical movement of the second hinge member.

  According to the seat hinge structure proposed in Patent Document 1, since the pin support hole is formed in a long hole shape, the seat and the second hinge member move in the vertical direction with respect to the luggage box and the first hinge member. Configured to be possible. Thus, when the driver is seated on the seat, the seat and the second hinge member move downward, and the seating is detected by the switch means. Further, when the driver is not seated on the seat, the seat and the second hinge member move upward, so that the seating is not detected by the switch means.

Japanese Patent No. 3926559

  As described above, according to the motorcycle proposed in Patent Document 1, the driver's seating on the seat can be suitably detected by the simple seat hinge structure. However, in the seat hinge structure proposed in Patent Document 1, when the second hinge member moves up and down as the seat moves up and down, the friction generated between the first hinge member and the second hinge member increases. In such a case, the first hinge member and the second hinge member may rub against each other and sound may be generated.

  Therefore, an object of the present invention is to provide a seat hinge structure that can reduce the sound generated by the movement of the seat in the vertical direction.

  According to the first aspect of the present invention, a seat on which a person is seated, a first state in which the person can be seated, which is disposed below the seat, and the seat is rotated upward from the first state. A sheet support member that is rotatably supported between the second state, a first hinge member that has a pin support hole and is fixed to the sheet support member, and a vertical length of the pin support hole. A hinge pin having a smaller diameter than the first hinge member is attached to the first hinge member so as to be rotatable with respect to the first hinge member and movable in the vertical direction by inserting the hinge pin through the pin support hole. A seat hinge including a second hinge member fixed to the seat, and attached to one of the first hinge member or the second hinge member, and detects the vertical movement of the hinge pin with respect to the pin support hole. In the seat hinge structure comprising the sensor means, the second hinge member has a cross-section substantially comprising two vertical wall portions facing each other and an upper wall portion connecting the upper portions of the two vertical wall portions. It is U-shaped, the hinge pin is spanned between the two vertical wall portions, and the first hinge member is disposed between the two vertical wall portions so that the hinge pin supports the pin An insertion hole is inserted through the hole, supported by the first hinge member, and through which the hinge pin is inserted, and the hinge pin is inserted into the insertion hole between the first hinge member and the vertical wall portion. And a washer made of resin or rubber arranged in a state of being arranged, the washer projecting toward the first hinge member and extending in the vertical direction of the pin support hole and facing each other, and the hinge pin And each of Wherein the claw portion to be inserted between is provided.

  According to a second aspect of the present invention, in addition to the configuration of the first aspect, the first hinge member is provided with a protruding portion that protrudes toward the washer, and the washer includes the protruding portion. An engaging portion is provided to engage with.

  According to a third aspect of the present invention, in addition to the configuration of the second aspect, the first hinge member connects two vertical wall portions facing each other and an upper portion of the two vertical wall portions. An upper wall portion, and a rod-shaped member spanned between lower portions of the two vertical wall portions, and an end portion of the rod-shaped member from the vertical wall portion to the It is made to project toward a washer, and it is set as the above-mentioned projection part.

  According to a fourth aspect of the present invention, in addition to the configuration according to the second or third aspect, the projecting portion is provided below the pin support hole of the first hinge member, and the engaging portion. Projecting from the washer so as to pass through, the second hinge member approaches the projecting portion when the seat is rotated from the first state to the second state, and A cam surface is provided to reduce the amount of movement in the direction compared to the first state.

According to the first aspect of the present invention, the resin or rubber washer is disposed between the first hinge member attached to the seat support member and the second hinge member attached to the seat. Thus, the second hinge member does not rub against the first hinge member when the second hinge member moves in the vertical direction relative to the first hinge member. Therefore, it is possible to reduce the sound generated by the vertical movement of the second hinge member relative to the first hinge member.
Further, the washer is provided with a claw portion to be inserted between each of the opposing sides extending in the vertical direction of the pin support hole formed in the first hinge member and the hinge pin included in the second hinge member. Thus, the hinge pin does not rub against the pin support hole when the second hinge member moves in the vertical direction with respect to the first hinge member. Therefore, it is possible to reduce the sound generated by the vertical movement of the second hinge member relative to the first hinge member.

  According to invention of Claim 2, while providing the protrusion part which protrudes toward a washer in the 1st hinge member, the engaging part engaged with a protrusion part was provided in the washer. Thereby, the washer can be fixed to the first hinge member. Therefore, when the second hinge member rotates about the hinge pin as a rotation axis, the washer can be prevented from rotating around the hinge pin together with the second hinge member.

According to the invention of claim 3, the first hinge member has a substantially U-shaped cross section including two vertical wall portions facing each other and an upper wall portion connecting the upper portions of the two vertical wall portions. A rod-shaped member was stretched between the lower portions of the two vertical wall portions. Thereby, rigidity can be improved with a simple and simple structure. Therefore, durability can be improved at low cost.
Moreover, the edge part of the rod-shaped member was protruded toward the washer from the vertical wall part, and it was set as the protrusion part. Thereby, a washer can be fixed to the 1st hinge member using a rod-shaped member. Therefore, rotation around the hinge pin of the washer can be prevented using the rod-shaped member.

  According to the fourth aspect of the present invention, the protruding portion is provided below the pin support hole of the first hinge member and protruded from the washer so as to penetrate the engaging portion. Further, when the second hinge member is rotated upward from the first state in which the seat can be seated, the second hinge member approaches the protrusion, and the amount of movement of the hinge pin in the vertical direction is reduced compared to the first state. A cam surface was provided. Thereby, the amount of movement of the sheet in the vertical direction when the sheet is rotated upward from the first state can be smaller than that in the first state. Therefore, the swinging of the sheet when the sheet is rotated upward using the protrusion can be reduced.

1 is a left side view showing a scooter type motorcycle having a seat hinge structure of the present invention. It is a disassembled perspective view which shows the seat hinge shown in FIG. It is a left view which shows the state by which the washer 55 and the hinge pin 67 were inserted in the pin support hole 56a of a 1st hinge member. It is a left view which shows the seat hinge in a 1st state (state which can be seated). It is a left view which shows the seat hinge in the state (2nd state) which rotated the 2nd hinge member to the upper direction. It is a left view which shows a seat hinge, and is a figure which shows the state which the 2nd hinge member moved below from the state of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First, the overall configuration of a scooter type motorcycle having a seat hinge structure of the present invention will be described with reference to FIG. FIG. 1 is a left side view showing a scooter type motorcycle having a seat hinge structure of the present invention.
In the following description, descriptions of front and rear, left and right, and up and down directions are in accordance with the directions seen from the rider (driver) who rides the motorcycle unless otherwise specified. In the figure, the arrow FR indicates the front of the vehicle, and the arrow UP indicates the upper side of the vehicle.

  As shown in FIG. 1, the motorcycle 1 includes a vehicle body frame 10 including a head pipe 11 and a seat rail 13, a front wheel 21 disposed in front of the vehicle body frame 10, and above the front wheel 21. The front fender 211 that is disposed, the front fork 22 that pivotally supports the front wheel 21, the bottom bridge 231 and the steering stem 232 that connect the front fork 22 to the head pipe 11 so as to be rotatable to the left and right, and the steering stem 23, a handle 24 connected to the upper end of the vehicle body 23, an engine 25 connected to the lower side of the vehicle body frame 10 so as to be swingable, a rear wheel 26 arranged behind the vehicle body frame 10, and an upper side of the rear wheel 26. Rear fender 261 and the power transmission device 2 attached to the engine 25 and supporting the rear wheel 26 A rear cushion 28 interposed between the power transmission device 27 and the seat rail 13, a fuel tank 29 disposed in front of the engine 25, and a luggage box 30 as a seat support member for storing luggage such as a helmet. And a seat 31 disposed above the luggage box 30, a seat hinge 50 that connects the luggage box 30 and the seat 31, and a body cover 32 that covers the vehicle body frame 10.

  The body frame 10 is configured by integrally joining a plurality of types of steel materials by welding or the like. The vehicle body frame 10 includes a head pipe 11, a main frame 12, a seat rail 13, a down frame 14, and a plurality of cross members (not shown).

The head pipe 11 is disposed at the front end portion of the vehicle body frame 10.
A pair of main frames 12 are provided on the left and right. The pair of main frames 12 is connected to the head pipe 11 at the front end side. The pair of main frames 12 extend obliquely downward and rearward from the head pipe 11 in a side view, bend halfway and extend rearward. The rear end sides of the pair of main frames 12 are connected to the seat rail 13.

  A pair of seat rails 13 are provided on the left and right. One end of the pair of seat rails 13 is connected to the down frame 14. The pair of seat rails 13 extends upward from the connecting portion with the down frame 14 in a side view, bends in the middle, and the other end extends obliquely upward and rearward. Near the bent portion of the pair of seat rails 13, the rear end side of the main frame 12 is connected.

  The down frame 14 is disposed below the main frame 12 and is provided as a pair on the left and right. The pair of down frames 14 extend obliquely downward and rearward from the head pipe 11 in a side view, bend in the middle, and extend rearward. The rear end sides of the pair of down frames 14 are connected to the pair of seat rails 13.

  The cross member (not shown) is made of, for example, a pipe member extending in the left-right direction, and couples a pair of frames (main frame 12, seat rail 13, down frame 14, etc.) in the left-right direction.

  A pair of front forks 22 are provided on the left and right. The pair of front forks 22 is supported by the head pipe 11 via the bottom bridge 231 and the steering stem 232 below the head pipe 11. The upper end portion of the steering stem 232 is connected to the lower end portion of the handle 24.

The engine 25 is a prime mover of the motorcycle 1 and is mounted at a substantially central portion of the vehicle in the front-rear direction. The engine 25 is swingably connected to the seat rail 13 via a pair of connecting members (not shown).
The engine 25 includes a crankcase 34, a cylinder part 35 having a cylinder head 37, and an intake device 39 and an exhaust device 44 connected to the cylinder head 37.

  The crankcase 34 houses a crankshaft and a transmission mechanism (both not shown). The crankcase 34 is provided with a pair of vehicle body connecting portions 341 to which the above-described connecting member (not shown) is connected.

  The cylinder portion 35 includes a cylinder block 36 attached in front of the crankcase 34, a cylinder head 37 attached in front of the cylinder block 36, and a head cover 38 that covers the opening of the cylinder head 37.

  The cylinder block 36 accommodates a connecting rod (not shown) connected to a speed change mechanism (not shown). The cylinder head 37 accommodates a piston (not shown) so as to reciprocate. The reciprocating motion of the piston is converted into the rotational motion of the crankshaft via the connecting rod. The output of the engine 25 is output via the speed change mechanism, and is transmitted to the rear wheel 26 via the power transmission device 27.

  The front fender 211 is fixed to the front fork 22 and covers the front wheel 21. The rear fender 261 is fixed to the seat rail 13 and covers the upper part of the rear wheel 26.

  The power transmission device 27 is disposed on the left end side in the vehicle width direction. The power transmission device 27 rotatably supports the rear wheel 26. The power transmission device 27 transmits the driving force of the engine 25 to the rear wheel 26.

  A pair of rear cushions 28 are provided on the left and right. The left rear cushion 28 is connected to the seat rail 13 on the upper end side, and is connected to the rear end portion of the power transmission device 27 on the lower end side. The right rear cushion (not shown) is connected to the seat rail 13 at the upper end side and is connected to the swing arm (not shown) at the lower end side.

  The fuel tank 29 is disposed in a space surrounded by the main frame 12 and the down frame 14 in front of the engine 25.

  The luggage box 30 is disposed in a space formed above the engine 25 and below the seat 31. The luggage box 30 is attached to the pair of seat rails 13 by bolts and nuts (both not shown). The luggage box 30 has a box shape having an opening (not shown) above, and is formed in a large size so that a luggage such as a helmet can be stored.

  A seat 31 for seating an occupant (driver and rear passenger) is attached to the upper portion of the luggage box 30 via a seat hinge 50, and can be seated in a first state (see FIG. 3) and the first state. Rotate between the second state (see FIG. 4) and the second state rotated upward.

  Next, the seat hinge structure of the present embodiment will be described with reference to FIGS. FIG. 2 is an exploded perspective view showing the seat hinge 50. FIG. 3 is a left side view showing a state where the washer 55 and the hinge pin 67 are inserted into the pin support hole 56a of the first hinge member. FIG. 4 is a left side view showing the seat hinge 50 in the first state (seatable state). FIG. 5 is a left side view showing the seat hinge 50 in a state in which the second hinge member 52 is rotated upward (second state). FIG. 6 is a left side view showing the seat hinge 50, and is a view showing a state in which the second hinge member 52 is moved downward from the state of FIG.

The seat hinge structure of the present embodiment includes a seat hinge 50 that couples the seat 31 and the luggage box 30, and a seat switch 53 as sensor means for detecting movement of the seat 31 in the vertical direction.
The seat hinge 50 includes a first hinge member 51, a second hinge member 52, a leaf spring 54, and a washer 55, as shown in FIGS. 2 to 6.

  The first hinge member 51 is attached to the luggage box 30. As shown in FIG. 2, the first hinge member 51 includes a pair of vertical wall portions 56 and 57 facing each other, an upper wall portion 58 connecting the upper portions of the pair of vertical wall portions 56 and 57, and a pair of vertical wall portions. An L-shaped bracket 59 disposed at a position surrounded by the wall portions 56 and 57 and the upper wall portion 58, and a rod-like member 60 spanned between the lower portions of the pair of vertical wall portions 56 and 57. .

The pair of vertical wall portions 56 and 57 and the upper wall portion 58 are formed into a substantially U-shaped cross section by pressing one steel plate.
Pin support holes 56a and 57a are formed in the pair of vertical wall portions 56 and 57, respectively. A hinge pin 67, which will be described later, is inserted into these pin support holes 56a and 57a. The pin support holes 56a and 57a have a shape in which four corners of a quadrangle close to a square are rounded. The pin support holes 56a and 57a are formed such that the sizes of the vertical sides 56b, 56c, 57b and 57c are larger than the diameter of the hinge pin 67, respectively.

Bolt holes 58 a and 58 b and an opening 58 c are formed in the upper wall portion 58.
Bolts 61 are passed through the bolt holes 58 a and 58 b, respectively, and the first hinge member 51 is fixed to the luggage box 30 by the bolts 61. From the opening 58c, a detection unit 70 of a sheet switch 53 described later is exposed.

  The bracket 59 is fixed to the vicinity of the opening 58c in the upper wall portion 58 by welding downward. A seat switch 53 is fixed to the bracket 59. A screw hole 59a through which a screw 62 for attaching the seat switch 53 is formed is formed in the lower portion of the bracket 59. A seat switch 53 is attached to the bracket 59 with a screw 62 and a nut 63.

  The rod-like member 60 has a vertical wall portion 56, below the pin support holes 56a, 57a in the vertical wall portions 56, 57 so that both end portions 60a, 60b protrude outside the vertical wall portions 56, 57. It is fixed to 57 by welding. More specifically, a concave portion is formed at the lower end of each of the vertical wall portions 56, 57 and is recessed upward in a shape corresponding to the shape of the peripheral surface of the rod-shaped member 60. And the rod-shaped member 60 is arrange | positioned in the position in which these recessed parts were formed, and is welded to the vertical wall parts 56 and 57. FIG.

  As shown in FIGS. 2 and 4 to 6, the second hinge member 52 is attached to the seat 31 with bolts 68 while being attached to the first hinge member 51 so as to be rotatable and vertically movable. It is done. As shown in FIG. 2, the second hinge member 52 includes a pair of vertical wall portions 64 and 65 facing each other, an upper wall portion 66 connecting the upper portions of the pair of vertical wall portions 64 and 65, and a pair of vertical wall portions. The hinge pin 67 spanned between the wall parts 64 and 65, and the cam surfaces 64b and 65b formed in the lower end side of a pair of vertical wall parts 64 and 65 are provided. The second hinge member 52 is configured to be slightly larger than the first hinge member 51.

The pair of vertical wall portions 64 and 65 and the upper wall portion 66 are formed into a substantially U-shaped cross section by pressing one steel plate.
Pin support holes 64a and 65a are formed in the pair of vertical wall portions 64 and 65, respectively. The pin support holes 64a and 65a have a circular shape. The hinge pin 67 is configured in a bolt shape having a thread groove formed on the tip side. The hinge pin 67 is passed through the pin support holes 64a and 65a, and is fixed by a nut 67a welded in the vicinity of the pin support hole 65a on the outer surface of the vertical wall portion 65.

The cam surfaces 64b and 65b are provided around the pin support holes 64a and 65a in the pair of vertical wall portions 64 and 65. The cam surfaces 64b and 65b are in contact with the end portions (projecting portions) 60a and 60b of the rod-shaped member 60, thereby limiting the amount of vertical movement of the hinge pin 67 (second hinge member 52).
More specifically, the cam surfaces 64b and 65b are constituted by the bottom surfaces (side surfaces) of the vertical wall portions 64 and 65 located around the pin support holes 64a and 65a. As shown in FIG. 4, in the first seatable state, the length L1 from the center P of the pin support holes 64a, 65a (the center of the hinge pin 67) to the cam surfaces 64b, 65b positioned below is It is configured to be shorter than the length L2 from the center P of the pin support holes 64a and 65a to the cam surfaces 64b and 65b positioned below in the second state (see FIG. 5).

  Bolt holes 66 a and 66 b are formed in the upper wall portion 66. Bolts 68 are passed through the bolt holes 66 a and 66 b, and the second hinge member 52 is fixed to the seat 31 by the bolts 68.

  The seat switch 53 detects the vertical movement of the hinge pin 67. As shown in FIG. 2, the seat switch 53 includes a switch box 69, a detection unit 70 provided so as to freely enter and exit from the upper end of the switch box 69, a first terminal 71 for extracting a signal detected by the switch box, A second terminal 72 and an attachment portion 73 formed with a screw hole 73a through which a screw 62 for attachment to the bracket 59 is passed.

  The detection unit 70 is urged to the raised state, transitions to a lowered state when a downward load is applied, and returns to the raised state when the load is removed.

The leaf spring 54 is disposed between the first hinge member 51 and the luggage box 30 and biases the second hinge member 52 (hinge pin 67) upward. The leaf spring 54 includes an attachment portion 74 attached to the luggage box 30 and a pair of spring portions 75 and 76 that abut against the lower portion of the hinge pin 67 and urge the hinge pin 67 upward.
Bolt holes 74 a and 74 b through which bolts 61 for attachment to the luggage box 30 are passed are formed in the attachment portion 74.

  As shown in FIGS. 2 and 3, the washer 55 is a resin or rubber member formed in a vertically long plate shape, and is disposed between the first hinge member 51 and the second hinge member 52. . The washer 55 includes an insertion hole 55a, an engagement hole 55b as an engagement portion, and a pair of claw portions 55c and 55d.

The insertion hole 55a is formed on one end side in the longitudinal direction of the washer 55, and has a shape in which quadrangular squares are rounded. A hinge pin 67 is inserted through the insertion hole 55a. The insertion hole 55a has substantially the same size in the vertical direction as the size of each side 56b, 56c, 57b, 57c in the vertical direction of the pin support holes 56a, 57a of the first hinge member 51. Pass through to move.
The engagement hole 55 b is formed on the other end side in the longitudinal direction of the washer 55. The engaging holes 55b are engaged with protrusions that are the end portions 60a and 60b of the rod-shaped member 60.

The pair of claw portions 55 c and 55 d are provided along the respective sides in the vertical direction of the insertion hole 55 a in the washer 55. The pair of claw portions 55c and 55d protrude from the one surface side of the washer 55 substantially perpendicularly to this surface.
The pair of claw portions 55 c and 55 d are inserted between the vertical pins 56 b and 56 c or 57 c and 57 b in the pin support hole 56 a or 57 a of the first hinge member 51, and the hinge pin 67.

As shown in FIG. 3, the distance (gap) W <b> 1 between the inner surfaces of the pair of claw portions 55 c and 55 d is configured to be substantially equal to the diameter of the hinge pin 67. The distance (width) W2 between the outer surfaces of the pair of claw portions 55c and 55d is set to be approximately equal to the width of the pin support holes 56a and 57a or slightly wider than the width of the pin support holes 56a and 57a.
The upper ends of the pair of claw portions 55c and 55d are located above the center P of the hinge pin 67 in a state where the hinge pin 67 inserted into the insertion hole 55a and the pin support holes 56a and 57a is raised upward (FIG. 3). (See the solid line part and FIG. 4). The lower ends of the pair of claw portions 55c and 55d are located below the center P of the hinge pin 67 in a state where the hinge pin 67 inserted into the insertion hole 55a and the pin support holes 56a and 57a is lowered most downward. (Refer to the broken line portion in FIG. 3 and FIG. 6). That is, the length W3 from the upper end to the lower end of the pair of claw portions 55c and 55d is the center P of the hinge pin 67 when it rises up most in the state of being inserted into the insertion hole 55a and the pin support holes 56a and 57a, It is configured to be longer than the length W4 between the center P of the hinge pin 67 when it is lowered downward in the state of being inserted into the insertion hole 55a and the pin support holes 56a and 57a.

The seat hinge 50 described above is assembled as follows and attached to the luggage box 30 and the seat 31.
First, the seat switch 53 is attached to the bracket 59 of the first hinge member 51 with screws 62 and nuts 63. Next, a washer 55 is attached to each of the pair of vertical wall portions 56 and 57 in the first hinge member 51. More specifically, the washer 55 is provided so that the engagement holes 55b are engaged with the end portions 60a and 60b of the rod-shaped member 60 and the claw portions 55c and 55d are inserted into the pin support holes 56a and 57a. It is attached.

  Next, the second hinge member 52 is overlaid on the first hinge member 51. More specifically, the washer 55 is disposed between the vertical wall portions 56 and 57 of the first hinge member 51 and the vertical wall portions 64 and 65 of the second hinge member 52, and the first The second hinge member 52 is overlaid on the first hinge member 51 so that the pin support holes 56a, 57a in the hinge member 51 and the pin support holes 64a, 65a in the second hinge member 52 are continuous.

  Next, the hinge pins 67 are pin support holes 64a of the second hinge member 52, insertion holes 55a of the washer 55, pin support holes 56a and 57a of the first hinge member 51, insertion holes 55a of the washer 55, and pins of the second hinge member 52. The support holes 65a are passed through in order and fixed to the nut 67a.

Next, the first hinge member 51 is fixed to the luggage box 30 by the bolt 61 via the leaf spring 54. Further, the second hinge member 52 is fixed to the seat 31 by a bolt 68.
In this manner, the seat hinge 50 is attached to the luggage box 30 and the seat 31.

Next, the operation of the seat hinge 50 of the present invention will be described.
In the seat hinge 50 of the present embodiment, the second hinge member 52 has a first state shown in FIG. 4 and a second state shown in FIG. , Rotate between.
In the first state, the user can sit on the seat 31. In the second state, the opening of the luggage box 30 is opened, and a luggage such as a helmet can be taken in and out of the luggage box 30.

  In the first state shown in FIG. 4, the hinge pin 67 is pressed against the upper end portions of the pin support holes 56a and 57a by the urging force of the leaf spring 54, and the lower end portion of the hinge pin 67 and the pin support holes 56a and 57a A predetermined gap is formed between the two. In this state, the length L3 between the cam surfaces 64b and 65b and the upper edges of the end portions (protrusions) 60a and 60b of the rod-shaped member 60 is equal to the lower edge portion of the shaft portion of the hinge pin 67 and the pin support. It is longer than the length L4 of the gap between the holes 56a and 57a.

In the first state shown in FIG. 4, when an occupant sits on the seat 31, a load is applied downward, and as shown in FIG. 6, the hinge pin 67 descends against the urging force of the leaf spring 54, It moves downward until it is pressed against the lower ends of the pin support holes 56a and 57a. Then, the detection unit 70 is pushed by the upper wall portion 66 that is lowered together with the hinge pin 67. Thereby, the seat switch 53 detects that an occupant is seated.
The length L3 between the cam surfaces 64b and 65b and the upper edge portions (projections) 60a and 60b of the rod-shaped member 60 is set to the lower edge portion of the shaft portion of the hinge pin 67 and the pin support holes 56a and 57a. It is also possible to set it shorter than the length L4 of the gap between them. In this case, the hinge pin 67 moves downward until the cam surfaces 64b and 65b are pressed against the ends (projections) 60a and 60b of the rod-shaped member 60.

  Next, when the occupant descends from the seat 31 in the state shown in FIG. 6, as shown in FIG. 4, the hinge pin 67 is lifted by the urging force of the leaf spring 54 and is pressed against the upper ends of the pin support holes 56a and 57a. Return to the state. Then, the upper wall portion 66 that has pushed the detection portion 70 rises together with the hinge pin 67. Thereby, the seat switch 53 detects that the passenger is not seated.

On the other hand, also in the second state shown in FIG. 5, the hinge pin 67 is pressed against the upper ends of the pin support holes 56 a and 57 a by the urging force of the leaf spring 54. Here, in the first state, the length L1 from the center P of the pin support holes 64a and 65a to the cam surfaces 64b and 65b positioned below is from the center P of the pin support holes 64a and 65a in the second state. It is configured to be shorter than the length L2 to the cam surfaces 64b and 65b positioned below (see FIGS. 4 and 5). Therefore, in the second state, the length L5 between the cam surfaces 64b and 65b and the upper edges of the end portions (projections) 60a and 60b of the rod-shaped member 60 is equal to the lower edge portion of the shaft portion of the hinge pin 67. The length L4 of the gap between the pin support holes 56a and 57a and the length between the cam surfaces 64b and 65b in the first state and the upper edges of the ends (protrusions) 60a and 60b of the rod-shaped member 60 It is shorter than L3 (see FIGS. 4 and 5). As a result, when a downward load is applied to the seat 31 in the second state, the cam surfaces 64b and 65b and the end portions (protruding portions) of the rod-shaped member 60 with the hinge pin 67 lowered by the length L5. ) 60a and 60b come into contact with each other, and further downward movement of the hinge pin 67 is restricted.
That is, in the second state shown in FIG. 5, the cam surfaces 64 b and 65 b approach the ends (projections) 60 a and 60 b of the rod-shaped member 60, and the vertical direction of the seat 31 attached to the second hinge member 52 Movement is restricted as compared with the first state.

  According to the motorcycle 1 having the seat hinge structure of the present invention described above, the following effects can be obtained.

A resin or rubber washer 55 is disposed between the first hinge member 51 attached to the luggage box 30 and the second hinge member 52 attached to the seat 31. Thereby, the second hinge member 52 does not rub against the first hinge member when the second hinge member 52 moves in the vertical direction with respect to the first hinge member 51. Therefore, it is possible to reduce the sound generated by the vertical movement of the second hinge member 52 relative to the first hinge member 51.
In addition, the washer 55 is provided with each side 56b, 56c, 57b, 57c facing each other extending in the vertical direction of the pin support holes 56a, 57a formed in the first hinge member 51, and a hinge pin 67 provided in the second hinge member 52. Claw portions 55c and 55d to be inserted between them were provided. Thereby, when the second hinge member 52 moves in the vertical direction with respect to the first hinge member 51, the hinge pin 67 does not rub against the pin support holes 56a and 57a. Therefore, it is possible to reduce the sound generated by the vertical movement of the second hinge member 52 relative to the first hinge member 51.

  The first hinge member 51 is provided with projections 60a and 60b that project toward the washer 55, and the washer 55 is provided with an engagement hole 55b that engages with the projections 60a and 60b. Thereby, the washer 55 can be fixed to the first hinge member 51. Therefore, it is possible to prevent the washer 55 from rotating around the hinge pin 67 together with the second hinge member 52 when the second hinge member 52 rotates around the hinge pin 67 as a rotation axis.

The first hinge member 51 has a substantially U-shaped cross section including two vertical wall portions 56 and 57 facing each other and an upper wall portion 58 connecting the upper portions of the two vertical wall portions 56 and 57. A rod-shaped member 60 was stretched between the lower portions of the two vertical wall portions 56 and 57. Thereby, rigidity can be improved with a simple and simple structure. Therefore, durability can be improved at low cost.
Further, the end portions 60a and 60b of the rod-shaped member 60 are protruded from the vertical wall portions 56 and 57 toward the washer 55 to form the protruding portions 60a and 60b. Accordingly, the washer 55 can be fixed to the first hinge member 51 using the rod-shaped member 60. Therefore, it is possible to prevent the washer 55 from rotating around the hinge pin 67 using the rod-shaped member 60.

  Further, the projecting portions 60a and 60b are provided below the pin support holes 56a and 57a of the first hinge member 51, and are projected from the washer 55 so as to penetrate the engaging hole 55b. Further, when the seat 31 can be seated on the second hinge member 52, when the seat 31 is turned upward, the second hinge member 52 approaches the protrusions 60a and 60b, and the amount of movement of the hinge pin 67 in the vertical direction is reduced. Cam surfaces 64b and 65b which are reduced as compared with the state are provided. As a result, the amount of movement of the sheet 31 in the vertical direction when the sheet 31 is rotated upward from the first state can be smaller than that in the first state. Therefore, the swing of the sheet 31 when the sheet 31 is rotated upward using the protrusions 60a and 60b can be reduced.

As mentioned above, although preferable embodiment of this invention was described, this invention can be implemented with a various form, without being restrict | limited to embodiment mentioned above.
For example, in the present embodiment, the present invention is applied to a seat hinge of a motorcycle, but is not limited thereto. That is, the present invention may be applied to a riding simulator, a bodily sensation arcade game, or a three-wheel or four-wheel straddle-type vehicle.

  In the present embodiment, the seat switch 53 is attached to the first hinge member 51, but is not limited thereto. That is, the seat switch 53 may be attached to the second hinge member 52.

30 Luggage box (sheet support member)
31 seat 50 seat hinge 51 first hinge member 52 second hinge member 53 seat switch (sensor means)
55 Washer 55a Insertion hole 55b Engagement hole (engagement part)
55c, 55d Claw part 56, 57 Vertical wall part 56a, 57a Pin support hole 56b, 56c, 57b, 57c Side 58 Upper wall part 60 Bar-shaped member 60a, 60b End part (protrusion part)
64, 65 Vertical wall portion 64b, 65b Cam surface 66 Upper wall portion 67 Hinge pin

Claims (4)

A seat (31) on which a person is seated;
Arranged below the seat, the seat (31) can be rotated between a first state in which a person can be seated and a second state in which the seat (31) is rotated upward from the first state. A sheet support member (30) supported by
A first hinge member (51) having pin support holes (56a, 57a) fixed to the sheet support member (30) and a diameter smaller than the vertical length of the pin support holes (56a, 57a). A hinge pin (67) is provided, and the hinge pin (67) is inserted into the pin support hole (56a, 57a) so as to be rotatable with respect to the first hinge member (51) and movable in the vertical direction. A seat hinge (50) comprising a second hinge member (52) attached to the first hinge member (51) and fixed to the seat (31);
Sensor means (53) which is attached to one of the first hinge member (51) or the second hinge member (52) and detects the vertical movement of the hinge pin (67) relative to the pin support holes (56a, 57a). In a seat hinge structure provided with
The second hinge member (52) includes two vertical wall portions (64, 65) facing each other, and an upper wall portion (66) connecting the upper portions of the two vertical wall portions (64, 65), The hinge pin (67) is stretched between the two vertical wall portions (64, 65), and the first hinge member (51) is connected to the two vertical walls. The hinge pin (67) is inserted into the pin support hole (56a, 57a) and supported by the first hinge member (51) by being disposed between the portions (64, 65),
There is an insertion hole (55a) through which the hinge pin (67) is inserted, and the hinge pin is inserted into the insertion hole (55a) between the first hinge member (51) and the vertical wall portion (64, 65). (67) is further provided with a resin or rubber washer (55) disposed in the inserted state,
The washer (55) protrudes toward the first hinge member (51) and extends in the vertical direction of the pin support holes (56a, 57a) and faces facing each other (56b, 56c, 57b, 57c), A seat hinge structure provided with claw portions (55c, 55d) inserted between the hinge pins (67). The first hinge member (51) is provided with protruding portions (60a, 60b) protruding toward the washer (55),
The seat hinge structure according to claim 1, wherein the washer (55) is provided with an engaging portion (55b) that engages with the protruding portion (60a, 60b).   The first hinge member (51) includes two vertical wall portions (56, 57) facing each other, and an upper wall portion (58) connecting the upper portions of the two vertical wall portions (56, 57), The rod-shaped member (60) is provided between the lower portions of the two vertical wall portions (56, 57), and has an end portion of the rod-shaped member (60) ( The seat hinge structure according to claim 2, wherein the projecting portions (60a, 60b) are formed by projecting 60a, 60b) from the vertical wall portions (56, 57) toward the washer (55). The protrusions (60a, 60b) are provided below the pin support holes (56a, 57a) of the first hinge member (51) and pass through the engaging portion (55b). Protruding from (55),
When the seat (31) is rotated from the first state to the second state, the second hinge member (52) approaches the protrusions (60a, 60b) and the hinge pin ( The seat hinge structure according to claim 2 or 3, further comprising a cam surface (64b, 65b) that reduces the vertical movement amount of 67) as compared with the first state.

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