Opening and closing mechanism

Abstract

To provide an opening and closing mechanism which can be easily operated with a simple structure.SOLUTION: An opening and closing mechanism (50) couples a seat (16) to a vehicle body of a straddle-type vehicle such that the seat is openable and closable. The opening and closing mechanism is provided with a base bracket (61) attached to the vehicle body, seat brackets (51, 52) attached to the seat, and a repulsion member (71) that applies a repulsion force to the seat in an opening direction. The seat bracket is swingably coupled to the base bracket, a base end portion (73) of the repulsion member is swingably coupled to the vehicle body, and a tip portion (72) of the repulsion member is swingably coupled to the seat. When the seat is closed, a swing center (C1) of the tip portion of the repulsion member is located on a straight line (L1) connecting a swing center (C3) of the seat bracket with a swing center (C2) of the base end portion of the repulsion member or below the straight line.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a seat opening and closing mechanism. [Background technology]

[0002] A known mechanism for opening and closing a seat in a saddle-ride type vehicle is one in which a damper assists in lifting the seat (see, for example, Patent Document 1). In the seat opening and closing mechanism described in Patent Document 1, a movable bracket provided at the front end of the seat and a fixed bracket provided on the vehicle body frame are connected via a hinge so that the seat can be opened and closed. A damper is connected to the middle of the seat in the fore-and-aft direction, and when the seat is closed, the repulsive force of the damper acts on the seat in an opening direction. Therefore, the seat opens when the driver applies a light upward force, and the repulsive force of the damper keeps the seat open. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-122172 Summary of the Invention [Problem to be solved by the invention]

[0004] In the seat opening / closing mechanism described in Patent Document 1, the seat is held in a closed state by a locking mechanism, but the repulsive force of the damper also acts on the locking mechanism, making the unlocking operation difficult.

[0005] The present invention has been made in view of the above points, and has an object to provide an opening and closing mechanism that has a simple structure and is easy to operate. [Means for solving the problem]

[0006] One aspect of the opening and closing mechanism of the present invention is a seat opening and closing mechanism that is openably and closably connected to the body of a saddle-type vehicle, and comprises a base bracket attached to the body, a seat bracket attached to the seat, and a repulsive member that applies a repulsive force to the seat in an opening direction, wherein the seat bracket is swingably connected to the base bracket, the base end of the repulsive member is swingably connected to the body, and the tip end of the repulsive member is swingably connected to the seat, and when the seat is closed, the swing center of the tip end of the repulsive member is located on or below a straight line connecting the swing center of the seat bracket and the swing center of the base end of the repulsive member, thereby solving the above problem. [Effects of the Invention]

[0007] According to one aspect of the opening / closing mechanism of the present invention, when the seat is lifted and the seat bracket swings relative to the base bracket, the repulsive member pushes the seat in the opening direction, assisting the lifting operation of the seat. When the seat is closed, the repulsive force of the repulsive member does not act in the seat opening direction. Therefore, the repulsive force of the repulsive member does not make the seat lock unlocking operation difficult. In addition, gaps are less likely to form at the joints between the seat and covers, etc., preventing a decrease in watertightness. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a left side view of a saddle-ride type vehicle according to an embodiment of the present invention; [Figure 2] FIG. 2 is a left side view of the rear part of the vehicle body of the present embodiment. [Figure 3] FIG. 2 is a top view of the rear part of the vehicle body of the present embodiment. [Figure 4] FIG. 2 is a perspective view of the opening and closing mechanism of the present embodiment. [Figure 5] 1 is a cross-sectional view showing a state in which the seat of the opening and closing mechanism of the present embodiment is closed. FIG. [Figure 6] FIG. 2 is a cross-sectional view showing the state in which the seat of the opening and closing mechanism of the present embodiment is open. [Figure 7] FIG. 10 is a cross-sectional view showing a state in which the seat of the opening and closing mechanism of the modified example is closed.

[0009] An opening / closing mechanism according to one aspect of the present invention connects a seat to the body of a saddle-ride type vehicle so that it can be opened and closed. In this opening / closing mechanism, a base bracket is attached to the body, a seat bracket is attached to the seat, and the seat bracket is pivotally connected to the base bracket. A repulsive force in the opening direction is applied to the seat from a repulsive member, a base end of the repulsive member is pivotally connected to the body, and a tip end of the repulsive member is pivotally connected to the seat. When the seat is closed, the pivot center of the tip end of the repulsive member is located on or below a line connecting the pivot center of the seat bracket and the pivot center of the base end of the repulsive member. When the seat is lifted and the seat bracket pivots relative to the base bracket, the repulsive member pushes the seat in the opening direction, assisting the lifting operation of the seat. When the seat is closed, the repulsive force of the repulsive member does not act in the seat-opening direction. Therefore, the repulsive force of the repulsive member does not make the seat lock unlocking operation difficult. Furthermore, gaps are less likely to form at the joints between the seat and covers, preventing a decrease in watertightness. [Example]

[0010] The saddle-riding type vehicle of this embodiment will be described below with reference to the accompanying drawings. Fig. 1 is a left side view of the saddle-riding type vehicle of this embodiment. In the following drawings, arrow Fr indicates the front of the vehicle, arrow Re indicates the rear of the vehicle, arrow L indicates the left side of the vehicle, and arrow R indicates the right side of the vehicle.

[0011] As shown in Fig. 1, a saddle-type vehicle 1 is configured by attaching various covers to an underbone-type body frame as the exterior of the vehicle. A front cover 11 is provided at the front of the vehicle, and a front leg shield 12 that protects the rider's legs is provided behind the front cover 11. A floor board 13 extends rearward from the lower end of the front leg shield 12, and a body cover 14 and a pair of side covers 15 are provided behind the floor board 13. A seat 16 with a series of seating surfaces for the driver and passenger is provided above the side cover 15.

[0012] A handlebar 21 is provided above the front cover 11, and a front wheel 23 is rotatably supported below the front cover 11 via a pair of front forks 22. A swing arm 24 with a motor is provided below the side cover 15. The swing arm 24 is swingably connected to the body frame, and a rear wheel 25 is rotatably supported at the rear of the swing arm 24. The left side of the swing arm 24 is covered by a swing arm cover 26, and power is transmitted from a motor (not shown) to the rear wheel 25 via a belt-type continuously variable transmission (not shown) within the swing arm cover 26.

[0013] In this type of saddle-ride vehicle, the seat is connected to the vehicle body so that it can be opened and closed. In scooter-type saddle-ride vehicles, the seat is typically designed to open more than upright, preventing it from closing under its own weight. However, there are also types in which the seat is designed to open only slightly, preventing it from closing under its own weight by using resilient members such as dampers and springs. In this type of saddle-ride vehicle, the resilient force of the damper acts on the seat even when it is closed. Therefore, even if the seat is held closed by the locking mechanism, the resilient force of the damper also acts on the locking mechanism, making it difficult to unlock the seat.

[0014] Because a repulsive force acts on the seat in the opening direction, gaps are likely to form where the seat and covers meet, reducing watertightness. Furthermore, if dampers or other devices are installed only on one side of the seat, and only one side of the seat is supported by the dampers, the seat may tilt. To prevent gaps at the joints and seat tilting, the rigidity of the seat itself must be increased, which makes the seat heavier. Therefore, the seat opening / closing mechanism of this embodiment uses the repulsive force of the dampers or other devices to hold the seat in place when the seat is open, and prevents the repulsive force of the dampers or other devices from acting on the seat when the seat is closed.

[0015] The seat opening / closing mechanism for a saddle-ride type vehicle will be described below with reference to Fig. 2 to Fig. 4. Fig. 2 is a left side view of the rear part of the vehicle body of this embodiment. Fig. 3 is a top view of the seat opening / closing mechanism of this embodiment. Fig. 4 is a perspective view of the seat opening / closing mechanism of this embodiment. Note that in Fig. 2 to Fig. 4, some members are indicated by two-dot chain lines or are omitted.

[0016] As shown in Figures 2 and 3, a pair of side frames 31 extend obliquely upward from the front to the rear at the rear of the body of the saddle-ride type vehicle 1. A battery support frame 35 is fixed to the inside of the pair of side frames 31. The battery support frame 35 is formed into a rectangular parallelepiped cage shape by combining vertical and horizontal frames. A rectangular parallelepiped battery 42 is housed inside the battery support frame 35. The battery support frame 35 and the battery 42 are tilted so that, in a side view, an upper front end 44 of the battery 42 is located rearward of a lower front end 43 (see Figure 5) of the battery 42.

[0017] A seat support frame 37 is fixed to the lower front side of the battery support frame 35, and extends upward from the lower part of the battery support frame 35 along the body cover 14. The front end of the seat 16 is connected to the upper part of the seat support frame 37 via an opening / closing mechanism 50 equipped with a damper 71. A pair of side frames 31 are connected to the rear of the battery support frame 35 via bridge brackets 32. A seat lock 33 is provided on the bridge bracket 32, and a seat striker 17 is provided on the rear end of the seat 16. When the seat 16 is closed, the seat striker 17 is locked by the seat lock 33.

[0018] A fixed bracket 34 projects downward from near the rising portion on the front side of the pair of side frames 31, and the swing arm 24 is swingably supported by the fixed bracket 34 via a pivot 27. The base end of the swing arm 24 forms a motor case 28, and a motor (not shown) is installed inside the motor case 28. The rear end of the swing arm 24 supports the rear wheel 25 and is connected to a rear suspension (not shown). By positioning the motor closer to the pivot 27 of the swing arm 24, vibrations transmitted to the motor when the swing arm 24 swings are suppressed.

[0019] 3 and 4, the opening / closing mechanism 50 for the seat 16 has first to third base brackets 51, 52, 55, a seat bracket 61, and a damper (repulsion member) 71. The seat bracket 61 is connected to the first and second base brackets 51, 52 via a seat rotation shaft 75, and the seat plate 18 is connected to the third base bracket 55 via the damper 71. As the seat 16 opens or closes, the seat bracket 61 swings relative to the first and second base brackets 51, 52, and the damper 71 expands or contracts as the seat 16 opens or closes, thereby applying a repulsive force to the seat 16 in the opening direction.

[0020] A flat support plate 38 is provided at the upper end of the seat support frame (vehicle body) 37, and a first base bracket 51 is screwed to the upper surface of the support plate 38. A lower plate 53 of the first base bracket 51 extends in the vehicle width direction, and a side plate 54 rises from one side edge (left edge) of the lower plate 53 of the first base bracket 51. A second base bracket 52 is attached to the other side edge (right edge) of the lower plate 53 of the first base bracket 51. The second base bracket 52 rises from the lower plate 53 of the first base bracket 51, and faces the side plate 54 of the first base bracket 51 with a gap between them.

[0021] A seat bracket 61 is attached to a seat plate 18 on the underside of the seat 16. A hook 19 protrudes downward from the front side of the underside of the seat plate 18, and an opening 63 in the center of an upper plate 62 of the seat bracket 61 is hooked onto the hook 19. Four elongated holes 64 are formed around the periphery of the opening 63 in the upper plate 62, and the seat bracket 61 is screwed to the seat plate 18 through these elongated holes 64. A pair of side plates 65, 66 are connected to both side edges of the upper plate 62 of the seat bracket 61, and the pair of side plates 65, 66 overlap the side plates 54 of the first base bracket 51 and the second base bracket 52 from the outer sides in the vehicle width direction.

[0022] The overlapping portion of the side plate 54 of the first base bracket 51 and the side plate 65 of the seat bracket 61, and the overlapping portion of the second base bracket 52 and the side plate 66 of the seat bracket 61 are connected via a seat rotation shaft 75. A third base bracket (vehicle body) 55 is attached to the middle position in the vehicle width direction of the lower plate 53 of the first base bracket 51. The third base bracket 55 stands upright from the lower plate 53 of the first base bracket 51, and is located rearward of the second base bracket 52. A base end portion 73 of a damper 71 is swingably connected to the third base bracket 55 via a connecting pin 77.

[0023] A tip end 72 of the damper 71 is connected to the seat 16. More specifically, the seat plate 18 below the seat 16 is recessed in a dome shape, and a pair of left and right connecting portions 45 protrude from a central position in the front-to-rear direction of the seat plate 18. The tip end 72 of the damper 71 is swingably connected to the pair of connecting portions 45 of the seat plate 18 via connecting pins 76. The seat 16 is connected to the third base bracket 55 via the damper 71, and as the seat 16 swings, the damper 71 expands and contracts while swinging around the base end 73 as a fulcrum. In this way, the damper 71 is installed using the dome-shaped space inside the seat plate 18.

[0024] Furthermore, a support portion 46 protrudes downward from the seat plate 18 between the seat bracket 61 and the pair of connecting portions 45. The center of the support portion 46 in the vehicle width direction is recessed to form a recess 47, and a damper 71 fits inside this recess 47. Furthermore, a pair of rubber bushings 48 are installed on the bifurcated lower end surface of the support portion 46. When the seat 16 is closed, the pair of rubber bushings 48 abut against the battery support frame 35, and the battery support frame 35 supports the seat 16 from below. The pair of rubber bushings 48 suppress the transmission of vibrations from the vehicle body to the seat 16 and also suppress misalignment of the seat 16 relative to the vehicle body.

[0025] The opening and closing operation of the seat will be described below with reference to Figures 5 and 6. Figure 5 is a cross-sectional view showing the opening and closing mechanism of this embodiment in a state where the seat is closed. Figure 6 is a cross-sectional view showing the opening and closing mechanism of this embodiment in a state where the seat is open.

[0026] 5, the battery support frame 35 is installed below the seat 16 in a rearward tilted state, and the battery 42 inside the battery support frame 35 is also tilted rearward. A seat support frame 37 extends from the lower part of the battery support frame 35 along the body cover 14, and the first and second base brackets 51, 52 and the seat bracket 61 are connected at the upper part of the seat support frame 37 via a seat rotation shaft 75. In addition, a base end 73 of a damper 71 is connected to a connecting pin 77 of a third base bracket 55 on the seat support frame 37, and a tip end 72 of the damper 71 is connected to a connecting pin 76 of the seat plate 18.

[0027] At this time, the damper 71 is positioned inside both ends of the battery 42 in the vehicle width direction (see FIG. 3). A base end 73 of the damper 71 is positioned in front of the battery 42, and a tip end 72 of the damper 71 is positioned above the battery 42. The damper 71 is installed by utilizing the space created by tilting the battery 42. In addition, the tip end 72 of the damper 71 is positioned rearward of the base end 73 of the damper 71, and the tip end 72 is positioned above the base end 73 of the damper 71. By extending the damper 71 upward and rearward, and by bringing the damper 71 closer to the seat plate 18, a large storage space can be secured below the seat 16.

[0028] As described above, the support portion 46 protrudes downward from the seat plate 18, but the damper 71 fits into the recess 47 of the support portion 46, so that the damper 71 does not interfere with the support portion 46 even when brought close to the seat plate 18. At this time, the recess 47 of the seat plate 18 is located at the center in the vehicle width direction. The driver's left and right buttocks rest on the seat 16, but the driver's buttocks (ischium) are not positioned directly above the damper 71 (recess 47). Therefore, the thickness of the seat 16 is sufficiently secured directly below the left and right buttocks. Therefore, the damper 71 can be brought close to the underside of the seat 16 without reducing the thickness of the seat 16 below the left and right buttocks.

[0029] When the seat 16 is closed, the swing center C1 (center of the connecting pin 76) of the tip end 72 of the damper 71 is located on the line L1 connecting the swing center C3 (center of the seat rotation shaft 75) of the seat bracket 61 and the swing center C2 (center of the connecting pin 77) of the base end 73 of the damper 71. The seat 16 and damper 71 stop when the swing centers C1-C3 are aligned, and the repulsive force of the damper 71 does not act on the seat 16. Therefore, the repulsive force of the damper 71 does not make it difficult to unlock the seat lock 33. Furthermore, gaps are less likely to form where the seat 16 and covers, etc. are joined, preventing a decrease in waterproofing.

[0030] As shown in Figure 6, when the seat 16 is opened from a closed state, the seat bracket 61 begins to swing in the opening direction relative to the first and second base brackets 51, 52, with the seat rotation shaft 75 as the fulcrum. As the seat bracket 61 swings, the damper 71 swings diagonally upward with the connecting pin 77 as the fulcrum. At this time, the swing center C1, which is the point of action of the damper 71, swings upward from the straight line L1, and the repulsive force of the damper 71 begins to act on the seat 16. The repulsive force of the damper 71 pushes the seat 16 upward in the opening direction, assisting the lifting operation of the seat 16.

[0031] In this case, the seat bracket 61 is installed at a central position in the vehicle width direction of the seat 16, and the damper 71 is located at a central position in the vehicle width direction and inside both ends of the seat bracket 61 in the vehicle width direction (see FIG. 3). Therefore, when the seat 16 is opened, the repulsive force of the damper 71 is applied equally to the left and right of the seat 16, preventing the seat 16 from tilting left and right. In addition, the damper 71 pushes up the seat 16 without twisting the seat bracket 61. In this way, because the damper 71 is not installed offset to one side in the vehicle width direction, the repulsive force of the damper 71 is transmitted smoothly to the seat 16.

[0032] Then, as the seat 16 is further opened, the seat 16 approaches an upright position. As the seat 16 is opened, the moment at which the seat 16 falls under its own weight decreases. The moment due to the repulsive force of the damper 71 becomes greater than the moment at which the seat 16 falls under its own weight, and the repulsive force of the damper 71 holds the seat 16 in the open position. With the seat 16 in the open position, the battery 42 can be attached to and detached from the battery support frame 35 from above, and the damper 71 is positioned forward of the attachment / detachment trajectory 78 of the battery 42. Therefore, the damper 71 does not hinder the attachment / detachment of the battery 42, improving the ease of attachment / detachment of the battery 42.

[0033] As described above, according to the opening / closing mechanism 50 of this embodiment, when the seat 16 is lifted and the seat bracket 61 swings relative to the first and second base brackets 51, 52, the damper 71 pushes the seat 16 up in the opening direction, assisting the lifting operation of the seat 16. When the seat 16 is closed, the repulsive force of the damper 71 does not act in the direction of opening the seat 16. Therefore, the repulsive force of the damper 71 does not make it difficult to unlock the seat lock 33. In addition, gaps are unlikely to form in the joints between the seat 16 and covers, etc., preventing a decrease in watertightness.

[0034] In this embodiment, the battery is installed under the seat, but a storage box may also be installed under the seat. A modified seat opening / closing mechanism will now be described with reference to Fig. 7. Regarding the modified seat opening / closing mechanism, a description of the same configuration as the seat opening / closing mechanism of this embodiment will be omitted.

[0035] As shown in Figure 7, a storage box 80 with an open top is installed below the seat 16. In a side view, the storage box 80 is tilted so that the upper front edge of the storage box 80 is further rearward than the lower front edge of the storage box 80. A flange 83 is formed at the front edge of the opening of the storage box 80, and the flange 83 of the storage box 80 supports the seat 16 from below. In the modified example, as in the present embodiment, the seat bracket 61 is connected to the first and second base brackets 51 and 52 (see Figure 5), and the seat 16 (seat plate 18) is connected to the third base bracket 55 via the damper 71.

[0036] The damper 71 is located inside both ends of the storage box 80 in the vehicle width direction. More specifically, the damper 71 is located inside both ends of the seat bracket 61 in the vehicle width direction and at a middle position in the vehicle width direction. Therefore, the repulsive force of the damper 71 is applied equally to the left and right sides of the seat 16, allowing the seat 16 to be opened and closed smoothly. A base end 73 (see FIG. 5) of the damper 71 is located in front of the storage box 80, and a tip end 72 (see FIG. 5) of the damper 71 is located above the storage box, and the damper 71 is installed by utilizing the dead space in front of the storage box 80. By positioning the base end 73 of the damper 71 forward of the opening of the storage box 80, the damper 71 does not obstruct the storage of items, improving the convenience of the storage box 80.

[0037] In addition, in this embodiment and the modified example, the base end of the damper is connected to the third base bracket, but the base end of the damper may be connected to the vehicle body so as to be able to swing. For example, the base end of the damper may be connected to the seat support frame, a body cover such as a side cover, or the body frame.

[0038] Furthermore, in this embodiment and the modified example, the first to third base brackets are formed as separate bodies, but the first to third base brackets may be formed as a single body.

[0039] Furthermore, although the battery is tilted in this embodiment and the modified example, the battery does not have to be tilted.

[0040] Furthermore, in this embodiment and the modified example, a damper has been described as an example of the repulsive member, but the repulsive member may be a spring as long as it is capable of applying a repulsive force to the seat in the opening direction.

[0041] In addition, in this embodiment and the modified example, the seat is designed not to open until it is upright, but the seat may be opened beyond that. If the seat is opened beyond the upright position, it will not close due to its own weight, but this prevents the seat from closing unexpectedly due to wind pressure or external force.

[0042] Furthermore, in this embodiment and the modified example, a configuration has been described in which the pivot center of the tip of the damper is located on a line connecting the pivot center of the seat bracket and the pivot center of the base end of the damper when the seat is closed, but this configuration is not limited thereto. The pivot center of the tip of the damper may be located below the line connecting the pivot center of the seat bracket and the pivot center of the base end of the damper when the seat is closed. Even with this configuration, the damper's repulsive force is prevented from being applied to the seat in the opening direction when the seat is closed. Furthermore, by being attracted to the seat and the cover, gaps are less likely to form, improving watertightness.

[0043] Although the present embodiment has been described as an opening / closing mechanism for a seat that is openably and closably connected to the body of a saddle-ride type vehicle, the opening / closing mechanism of the present embodiment can also be used as an opening / closing mechanism for first and second members other than seats. For example, an opening / closing mechanism for opening and closing a first member and a second member includes a fixed bracket attached to the first member, a movable bracket attached to the second member, and a repulsion member that applies a repulsive force to the second member in an opening direction, the movable bracket is swingably connected to the fixed bracket, a base end of the repulsion member is swingably connected to the first member, and a tip end of the repulsion member is swingably connected to the second member, and when the second member is closed, the swing center of the tip end of the repulsion member is located on or below a line connecting the swing center of the movable bracket and the swing center of the base end of the repulsion member. As a result, when the second member is lifted and the movable bracket swings relative to the fixed bracket, the repulsion member pushes the second member up in the opening direction, assisting the lifting operation of the second member. When the second member is closed, the repulsive force of the repulsive member does not act in a direction to open the second member. Therefore, the repulsive force of the repulsive member does not make the unlocking operation difficult. Furthermore, gaps are less likely to form where the first and second members are joined, so watertightness is not reduced. In this case, the first member may be a top case for storing items, and the second member may be a lid connected to the top case in an openable and closable manner. Alternatively, the first member may be a tank for storing liquid or the like, and the second member may be a tank cover connected to the tank in an openable and closable manner.

[0044] Furthermore, the opening / closing mechanism of this embodiment is not limited to the above-mentioned saddle-ride type vehicle, but can also be applied to other vehicles such as ATVs (All Terrain Vehicles), jet skis, etc. Note that the saddle-ride type vehicle is not limited to all vehicles in which the driver rides while straddling the seat, but also includes scooter-type vehicles in which the driver does not straddle the seat.

[0045] As described above, the first aspect is an opening / closing mechanism (50) for a seat (16) that is openably and closably connected to the body of a saddle-type vehicle (1), and includes base brackets (first and second base brackets 51, 52) attached to the body, a seat bracket (61) attached to the seat, and a repulsive member (damper 71) that applies a repulsive force to the seat in the opening direction, wherein the seat bracket is swingably connected to the base bracket, a base end (73) of the repulsive member is swingably connected to the body (third base bracket 55), and a tip end (72) of the repulsive member is swingably connected to the seat, and when the seat is closed, the swing center (C1) of the tip end of the repulsive member is located on or below a straight line (L1) connecting the swing center (C3) of the seat bracket and the swing center (C2) of the base end of the repulsive member. With this configuration, when the seat is lifted and the seat bracket swings relative to the base bracket, the repulsive member pushes the seat in the opening direction, assisting the lifting operation of the seat. When the seat is closed, the repulsive force of the repulsive member does not act in the seat opening direction. Therefore, the repulsive force of the repulsive member does not make the seat lock unlocking operation difficult. In addition, gaps are less likely to form where the seat and covers meet, preventing a decrease in watertightness.

[0046] In a second aspect, in the first aspect, the repulsive member is located inside both ends of the seat bracket in the vehicle width direction. With this configuration, the seat is pushed up by the repulsive member without twisting the seat bracket.

[0047] In the third aspect, the repulsive member is located at a middle position in the vehicle width direction in a top view of the second aspect. With this configuration, when the seat is opened, the repulsive force of the repulsive member is applied to the seat equally on both sides via the seat bracket, thereby suppressing left and right tilt of the seat.

[0048] In a fourth aspect, in any one of the first to third aspects, the tip end of the repulsive member is positioned rearward relative to the base end and the tip end is positioned higher than the base end of the repulsive member. With this configuration, the repulsive member extends rearward and upward, and is brought closer to the underside of the seat, thereby ensuring a large storage space below the seat.

[0049] In the fifth aspect, in the fourth aspect, a seat plate (18) is provided on the underside of the seat, and the repulsive member fits into a recess (47) recessed upward from the seat plate. With this configuration, the repulsive member is brought closer to the underside of the seat, making it possible to secure a large storage space below the seat.

[0050] In the sixth aspect, in the fifth aspect, the recessed portion of the seat plate is positioned on the center line in the vehicle width direction. With this configuration, the repulsive member can be brought closer to the underside of the seat without reducing the thickness of the seat under the left and right buttocks (sit bones).

[0051] In a seventh aspect, in any one of the first to sixth aspects, a battery (42) is stored below the seat, and the repulsive member is located inside both ends of the battery in the vehicle width direction, with a base end of the repulsive member located in front of the battery and a tip end of the repulsive member located above the battery. With this configuration, the repulsive member can be installed by utilizing the dead space in front of the battery.

[0052] In an eighth aspect, in the seventh aspect, the battery can be attached to and detached from the vehicle body from above, and the base end of the repulsive member is located forward of the battery attachment / detachment path 78. With this configuration, the repulsive member does not hinder the attachment / detachment of the battery, thereby improving the ease of attachment / detachment of the battery.

[0053] A ninth aspect is any one of the first to sixth aspects, in which a storage box (80) with an open top is installed below the seat, and the repulsive member is located inside both ends of the storage box in the vehicle width direction, with the base end of the repulsive member located in front of the storage box, the tip end of the repulsive member located above the storage box, and the base end of the repulsive member located forward of the opening of the storage box. With this configuration, the repulsive member can be installed by utilizing the dead space in front of the storage box. Furthermore, the repulsive member does not obstruct the storage of items, improving the convenience of the storage box.

[0054] A tenth aspect is an opening / closing mechanism for connecting a first member and a second member in an openable / closable manner, comprising a fixed bracket attached to the first member, a movable bracket attached to the second member, and a repulsive member that applies a repulsive force to the second member in an opening direction, wherein the movable bracket is pivotally connected to the fixed bracket, the base end of the repulsive member is pivotally connected to the first member, and the tip end of the repulsive member is pivotally connected to the second member, and when the second member is closed, the pivot center of the tip end of the repulsive member is located on or below a line connecting the pivot center of the movable bracket and the pivot center of the base end of the repulsive member. With this configuration, when the second member is lifted and the movable bracket swings relative to the fixed bracket, the repulsive member pushes the second member up in the opening direction, assisting the lifting operation of the second member. When the second member is closed, the repulsive force of the repulsive member does not act in a direction that opens the second member. Therefore, the repulsive force of the repulsive member does not make the unlocking operation difficult. Furthermore, gaps are less likely to form at the joining portion of the first and second members, and water-stopping properties are not reduced.

[0055] Although the present embodiment has been described, other embodiments may be made by combining the above-described embodiments and modifications in whole or in part.

[0056] Furthermore, the technology of the present invention is not limited to the above-described embodiments, and various changes, substitutions, and modifications may be made without departing from the spirit of the technical idea. Furthermore, if the technical idea can be realized in a different way due to technological advances or other derived technologies, it may be implemented using that method. Therefore, the claims cover all embodiments that may fall within the scope of the technical idea. [Explanation of symbols]

[0057] 1: Saddle-type vehicle 16: Sheet 18: Seat plate 42: Battery 47: Seat plate recess 50: Opening and closing mechanism 51: First base bracket (base bracket) 52: Second base bracket (base bracket) 55: Third base bracket (body) 61: Seat bracket 71: Damper (repulsion member) 72: Tip of damper 73: Base end of damper 78: Battery removal and installation trace 80: Storage box

Claims

1. A seat opening / closing mechanism that is openably and closably connected to a vehicle body of a saddle-ride type vehicle, a base bracket attached to the vehicle body; a seat bracket attached to the seat; a repulsive member that applies a repulsive force to the seat in an opening direction, The seat bracket is pivotally connected to the base bracket, a base end of the repulsion member is swingably connected to the vehicle body, The tip of the repulsive member is swingably connected to the seat, An opening and closing mechanism characterized in that, when the seat is closed, the swing center of the tip end of the rebound member is located on or below the straight line connecting the swing center of the seat bracket and the swing center of the base end of the rebound member.

2. The opening and closing mechanism according to claim 1, wherein the repulsive member is located inward of both ends of the seat bracket in the vehicle width direction.

3. 3. The opening / closing mechanism according to claim 2, wherein the repulsive member is located at a middle position in the vehicle width direction when viewed from above.

4. 3. The opening / closing mechanism according to claim 1, wherein a tip end of the repulsive member is positioned rearward of a base end of the repulsive member, and a tip end of the repulsive member is positioned above a base end of the repulsive member.

5. A seat plate is provided on the lower surface of the seat, The opening and closing mechanism according to claim 4, wherein the repulsive member fits into a recess recessed above the seat plate.

6. 6. The opening / closing mechanism according to claim 5, wherein the recessed portion of the seat plate is positioned on the center line in the vehicle width direction.

7. A battery is stored below the seat, the repulsive member is located inside both ends of the battery in the vehicle width direction, 3. The opening / closing mechanism according to claim 1, wherein a base end of the repulsive member is located in front of the battery, and a tip end of the repulsive member is located above the battery.

8. The battery is detachable from the vehicle body from above, 8. The opening / closing mechanism according to claim 7, wherein a base end of the repulsive member is located forward of a path of attachment / detachment of the battery.

9. A storage box with an open top is installed below the seat, The repulsive member is located inside both ends of the storage box in the vehicle width direction, a base end of the repulsive member is located in front of the storage box, and a tip end of the repulsive member is located above the storage box; 3. The opening / closing mechanism according to claim 1, wherein a base end of the repulsive member is located forward of the opening of the storage box.

10. An opening and closing mechanism that connects a first member and a second member in an openable and closable manner, a fixed bracket attached to the first member; a movable bracket attached to the second member; a repulsive member that applies a repulsive force to the second member in an opening direction, The movable bracket is pivotally connected to the fixed bracket, a base end of the repulsive member is swingably connected to the first member; a tip end of the repulsive member is swingably connected to the second member, An opening and closing mechanism characterized in that when the second member is closed, the swing center of the tip end of the repulsion member is located on or below the straight line connecting the swing center of the movable bracket and the swing center of the base end of the repulsion member.

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