JP2009262845A - Attachment structure of seat and motorcycle with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an attachment structure of a seat disabling detachment of the front seat with a simplified structure unless locking of a rear seat is released. <P>SOLUTION: The front seat 10 and the rear seat 11 are supported detachably by a vehicle body frame FR. A rear side engagement section 29 having the rear section of the front seat 10 engaged with the vehicle body frame FR consists of an engaging body 28 arranged in one of the vehicle body frame FR and the front seat 10, and an engaged body 27 arranged in the other one and engaged with the engaging body 28. The rear seat 11 is locked to the vehicle body frame 11, and the rear seat 11 is provided with a pressing section 41 preventing the separation of the engaging body 28 and the engaged body 27a by being contacted or approximated to the rear side engagement section 29 in a locked condition to the vehicle body frame FR. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a seat mounting structure for mounting two seats on the front and rear of a vehicle body frame of a vehicle such as a motorcycle.

  In motorcycles, a container, a battery, etc. are generally installed under the seat, so that the seat can be detachably attached to the body frame for taking in and out of portable items and checking the battery. In order to prevent theft and mischief, a locking device for locking the seat to the vehicle body frame is provided. Further, in some motorcycles, a rear seat for the passenger is provided behind the front seat for the driver so that two people can ride. In the case of this two-seater motorcycle, if a locking device is provided on both the front seat and the rear seat, the number of parts increases and the structure becomes complicated, so the rear seat locking device can be unlocked by operating the keys. There has been proposed a seat mounting structure in which a front seat can be removed from a vehicle body frame by removing the rear seat from the vehicle body frame (see Patent Documents 1 and 2).

Japanese Utility Model Publication No. 60-50087 JP-A-63-82885

  However, the seat mounting structure of Patent Document 1 is provided with a connecting portion that connects the two seats to each other separately from the mounting portion of the front seat to the vehicle body frame, and this connecting portion is covered and concealed by the rear seat. The front seat cannot be detached from the body frame unless the rear seat is removed. In addition, the seat mounting structure of Patent Document 2 is provided with a dedicated operation part for attaching and detaching the front seat separately from the part for attaching the front seat to the vehicle body frame, and the operation part is covered and concealed by the rear seat. By doing so, the front seat cannot be detached from the vehicle body frame unless the rear seat is removed. Therefore, in any of the attachment structures, a separate mechanism for preventing the front seat from being detached, such as a connecting portion or an operation portion, is required, and the structure becomes complicated. Further, in the mounting structure of the cited document 2, when removing the front seat, after removing the rear seat from the vehicle body frame, it is necessary to operate the detaching operation section dedicated to the front seat, resulting in poor operability.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a seat mounting structure with a simplified structure that makes it impossible to remove a front seat unless the rear seat is unlocked, and a motorcycle equipped with this mounting structure.

  In order to achieve the above object, a seat mounting structure according to the present invention includes a rear engagement portion in which a front seat and a rear seat are detachably supported by a vehicle body frame, and a rear portion of the front seat is engaged with the vehicle body frame. Comprises an engaging body provided on one of the vehicle body frame and the front seat and an engaged body provided on the other and engaged with the engaging body, and the rear seat is configured to be lockable to the vehicle body frame. The rear seat is provided with a pressing portion that prevents the engagement body and the engaged body from being separated from each other in contact with or close to the rear engagement portion while being locked to the vehicle body frame.

  According to this seat mounting structure, when the rear seat is locked to the vehicle body frame, the holding portion of the locked rear seat comes into contact with or close to the rear engagement portion that engages the rear portion of the front seat with the vehicle body frame, Since the separation between the engaging body and the engaged body is prevented, the front seat is held in a state in which it cannot be detached from the vehicle body frame unless the rear seat is unlocked. On the other hand, when the rear seat is opened after unlocking the rear seat, the presser portion is separated from the rear engagement portion, so that the engagement body and the engaged body can be separated. This eliminates the need for a separate member for preventing detachment such as a conventional connecting part and operating part, so that the structure is simplified as the number of parts is reduced, and the operation of the detaching operating part dedicated to the front seat is performed. Becomes unnecessary, and the operability is improved.

  In the present invention, it is preferable that the engaging body has a protrusion, and the engaged body has a fitting hole that fits into the protrusion. Thereby, the structure of a rear side engaging part is simplified. In addition, by setting the protruding direction of the protrusion to be almost vertical, the protrusion and fitting hole can be fitted and removed by a simple operation that moves the rear part of the front seat in the vertical direction with respect to the body frame. Therefore, the engagement and disengagement operation of the rear portion of the front seat with respect to the vehicle body frame is facilitated.

  It is preferable that the engaged body includes a fitting member made of an elastic body and having the fitting hole. As a result, when the pressing portion of the rear seat is brought into contact with the rear engagement portion, even if the relative position between the holding portion and the rear engagement portion is deviated, the fitting member made of an elastic body absorbs this. The proper contact state of the holding part can be maintained.

  In the present invention, the front seat is provided with an arm that protrudes rearward from the front seat, the engagement body is provided on one of the body frame and the protruding tip of the arm, and the engaged body is provided on the other side. Is preferably provided. As a result, the rear engagement portion provided at the front end of the arm and the vehicle body frame can be disposed below the rear seat behind the front seat, so that the rear seat has a simple shape that projects downward from the lower portion. It is possible to prevent the engagement body constituting the rear engagement portion from being detached from the engaged portion only by providing the pressing portion.

  In the present invention, it is preferable that the rear seat covers at least the upper part of the locking device. Thereby, the locking device can be prevented from being tampered with by being concealed by the rear seat.

  In the configuration including the locking device, the locking device and the engaging body or the engaged body can be attached to a cross member extending in the width direction of the body frame. Thereby, the increase in a number of parts can be suppressed by providing a locking device and an engaging body or a to-be-engaged body in a common cross member.

  In the configuration including the locking device, the locking device and the engaging body or the engaged body can be attached to the rear fender that covers at least the upper portion of the rear wheel via a locking bracket. Thus, since the locking device and the engaging body or the engaged body are generally provided on the locking bracket attached to the rear fender instead of the cross member having a small front-rear dimension, the front-rear dimension of the locking bracket is increased. By doing so, an engaging body or a to-be-engaged body can be arrange | positioned ahead rather than the outer side of a locking device. Therefore, since the attachment position of the engaging body or the engaged body can be set closer to the center in the vehicle body width direction, when the front seat and the rear seat are mounted, the rear side engaging portion composed of the engaging body and the engaged body is viewed from the outside of the vehicle body. It becomes difficult to see and the appearance is improved.

  In the present invention, for example, an article storage section is provided below the front seat. As a result, the front sheet can also be used as a lid member of the article storage unit, so that the stored items in the article storage unit can be prevented from being stolen. Further, when the rear seat is unlocked and the front seat is opened, the stored item inside the article storage unit can be taken out, and this operation can be performed without using a removal tool. The article storage section can be provided below the rear seat, or both below the front seat and below the rear seat.

  In the present invention, preferably, the engaging body and the engaged body of the rear side engaging portion are engaged with each other so as to be separated in the vertical direction, and the pressing portion is in contact with or close to the rear side engaging portion. Thus, the rear part of the front seat is prevented from moving upward, and further, the front part of the front seat is locked to the vehicle body frame so as to be vertically rotatable, and in the locked state, A front locking portion is provided that allows the engaging body and the engaged body to be engaged and disengaged in the vertical direction.

The motorcycle of the present invention includes the seat mounting structure described above.

  According to the seat mounting structure of the present invention, the state in which the rear seat cannot be detached from the vehicle body frame is maintained unless the rear seat is unlocked. On the other hand, when the rear seat is opened, the front seat can be opened without performing the unlocking operation separately. This eliminates the need for a separate member for preventing separation such as a conventional connecting portion and operating portion, and as the number of parts is reduced, the structure is simplified and the operation portion of the operating portion dedicated to the front seat can be operated. It becomes unnecessary and the operability is improved.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a partially broken side view of a main part of a motorcycle provided with a seat mounting structure according to a first embodiment of the present invention. The metal body frame FR includes a main frame 1, two left and right seat rails 3 extending rearward from the rear end portion of the main frame 1, a lower end portion connected to the main frame 1, and an upper end portion of the left and right seat rails. 3 and a reinforcing member 4 connected to the middle part in the front-rear direction. The two left and right seat rails 3 are connected by a metal cross member 5 fixed (for example, welded) so as to be bridged between them. A fuel tank 6 is attached to the upper part of the main frame 1, and a rear fender 9 is attached to the left and right seat rails 3 so as to cover at least the upper part of the rear wheel 8.

  A driver's front seat 10 and a passenger's rear seat 11 are detachably attached to the main frame 1 and the pair of left and right seat rails 3 in the vehicle body frame FR, respectively. The rear end portion of the front seat 10 is set to be covered with the front end portion of the rear seat 11. Both the sheets 10 and 11 have a structure in which cushion materials 14 and 15 are placed on bottom plates 12 and 13 made of synthetic resin and covered with skins 16 and 17. A hook 19 that projects forward from the lower surface of the bottom plate 12 is integrally formed at the front portion of the front seat 10. On the other hand, to the mounting bracket 21 fixed to the main frame 1 is attached a locking tool 20 having a locking recess 20a in which the hook 19 can be detachably locked. Accordingly, the front portion of the front seat 10 is locked to the main frame 1 via the front locking portion 18 including the hook 19 and the locking tool 20 having the locking recess 20a.

  FIGS. 2A and 2B are a side view and a plan view showing a hook 19 and a locking tool 20 constituting the front locking portion 18. The hook 19 has a wedge shape with a substantially rectangular shape in plan view as shown in FIG. 2B and a tapered side view as shown in FIG. 2A. On the other hand, the locking tool 20 is formed by bending a central portion of a metal flat plate into a U-shaped cross section to form a locking recess 20a into which the hook 19 is inserted, and mounting pieces on both sides of the locking recess 20a. The bolt 22 of FIG. 1 inserted through the mounting hole 20 c formed in 20 b is screwed into a screw hole (not shown) of the mounting bracket 21 fixed to the main frame 1 to be attached to the mounting bracket 21. In addition, in the locking tool 20 shown in FIG. 2B, an introduction guide piece 20d is formed by bending the three edges on the insertion port side of the U-shaped locking recess 20a outward. Thereby, the hook 19 can be easily engaged in the locking recess 20a. Further, as shown by a two-dot chain line in FIG. 2 (a), the hook 19 is inserted into the locking recess 20a, and the front portion of the front seat 10 is prevented from moving upward and horizontally while Allow to rotate in the direction.

  In FIG. 3, which is a plan view of the front seat 10, a pair of left and right support cylinder portions 23 projecting downward are integrally formed at the rear portion of the bottom plate 12 of the front seat 10. A support arm 24 protruding rearward from the front seat 10 is fixed by a screw body (bolt) 25 of FIG. Each support arm 24 has a support portion 24a to the support cylinder portion 23 that is substantially horizontal, is bent upward at the rear thereof, and is again substantially horizontal at the tip portion 24b. A mounting hole 24c is formed in the protruding tip 24b, and a fitting member 27 made of an elastic body such as a rubber grommet shown in FIG. 3 is mounted in the mounting hole 24c. A fitting hole 27 a is provided through the center of the fitting member 27. The bottom plate 12 of the front seat 10 is provided with a total of four cylindrical support leg portions 30 projecting downward from the left and right, respectively.

  Returning to FIG. 1, projections 28 made of metal pins that fit into the fitting holes 27 a of the fitting member 27 are erected on the left and right sides of the cross member 5 below the rear seat 11 by welding. . The protrusion 28 is set to a length shorter than the hole length of the fitting hole 27a, and is fitted in a state where it does not protrude above the fitting hole 27a. Therefore, the rear portion of the front seat 10 is positioned on the pair of left and right seat rails 3 via the support arm 24 and the cross member 5 by fitting the protrusions 28 into the fitting holes 27 a of the fitting member 27. Thus, the rear engagement portion 29 that engages the rear portion of the front seat 10 with the seat rail 3 is configured with the projection 28 as an engagement body and the fitting member 27 having the fitting hole 27a as an engaged body. The engaging body provided on the cross member 5 may be a fitting hole, and the engaged body provided on the support arm 24 may be a protrusion.

  The front seat 10 is engaged with the main frame 1 via the front locking portion 18 and the rear seat is engaged with the seat rail 3 via the rear engaging portion 29 from the bottom plate. The rubber dampers 30a attached to the bottom outer surfaces of the four supporting leg portions 30 in total, ie, two protruding left and right, respectively abut on the left and right seat rails 3 and are supported by the left and right seat rails 3 respectively. The front seat 10 supported in this manner is restricted from moving in the front-rear direction and the left-right direction by the front locking portion 18 and the rear engagement portion 29, but the rear portion is supported by the front hook 19 as a fulcrum. It is in a state in which it can be rotated so as to be lifted upward, that is, in a state in which it can be rotated so that the fitting member 27 of the rear engagement portion 29 is extracted from the hook 19. The front seat 10 covers a part of the rear side of the fuel tank 6 at the front end portion.

  As shown in FIG. 4, the rear seat 11 is integrally formed with a single hook 31 that protrudes rearward from the vehicle width direction center portion of the rear portion of the bottom plate 13, and the vehicle width direction center portion on the upper surface of the rear fender 9. A hook 32 having an inverted U-shaped hook 32a to which the hook 31 is hooked is attached by an attachment means such as a bolt. The rear seat 11 can be locked at the front portion thereof. Here, the term “locking” refers to connection in a state where the connection is not released without an external operation. Hereinafter, although the apparatus locked with a key is demonstrated as a locking apparatus, an electronic locking apparatus can also be used.

  First, in the vehicle width direction center part of the front part of the baseplate 13, the striker 33 which protrudes toward the downward direction is integrally formed in the left-right pair at predetermined intervals, as shown in FIG. Details of the striker 33 will be described later. Further, on the bottom plate 13 of the rear seat 11 in FIG. 4, a total of four support legs 47 each having a rubber damper 47a attached to the outer surface of the cylindrical bottom protrude downwardly as shown in FIG. It is integrally formed.

  As shown in FIG. 4, a locking device 34 that locks the front end portion of the rear seat 11 to the seat rail 3 via the cross member 5 is attached to the central portion in the left-right direction on the upper surface of the cross member 5. A holding block body 37 serving as a main body portion of the locking device 34 is fixed to the cross member 5. The holding block body 37 is formed with two lock holes 38 into which the pair of left and right strikers 33 of the rear seat 11 are removably inserted, and a positioning guide shaft 39 is provided at an intermediate position between the lock holes 38. It is erected.

  As shown in FIG. 6, the striker 33 has a shape in which a substantially conical guide portion 33 b is continuously provided at the lower end of a columnar main body portion 33 a, and a location near the guide portion 33 b in the main body portion 33 a. In addition, a substantially triangular locked groove 33c is formed in a side view. A fitting hole 40 into which the positioning guide shaft 39 of the locking device 34 is fitted is formed at a position between the strikers 33 on the bottom plate 13 of the rear seat 11. Further, a pair of left and right bottomed square cylindrical presser portions 41 projecting downward are integrally formed at a position of the bottom plate 13 of the rear seat 11 facing the left and right rear engagement portions 29 of the front seat 10. . When the striker 33 of the rear seat 11 is inserted into the lock hole 38 and the rear seat 11 is locked, the presser portion 41 is fitted so that its bottom surface comes into contact with the upper surface of the fitting member 27 of the rear engagement portion 29. The detachment of the fitting member 27 from the protrusion 28 of the fitting hole 27a, that is, the separation between the engaging body 28 and the engaged body 27 is prevented. The pressing portion 41 may be close to the fitting member 27 at an interval that prevents the fitting hole 27 from being detached from the protrusion 28 without contacting the fitting member 27.

  The locking device 34 is provided with a holding hole 42 in the holding block body 37, which is disposed in the vehicle width direction and communicates with a lock hole 38 opposed at both ends. The two lock pins 43 that can be fitted in the locked grooves 33c of the 33 and have triangular lock portions 43a at the tips when viewed from the front-rear direction are directed toward the lock holes 38 on the left and right sides. Are slidably accommodated in different arrangements. A spring force is applied to the two lock pins 43 in the directions away from each other toward the lock holes 38 facing each other. As a result, when the striker 33 is not inserted into the lock hole 38, the lock portions 43 a of the both lock pins 43 enter the lock hole 38.

  One end of a flexible operation member 49 shown in FIG. 4 is connected to the holding block body 37 of the locking device 34. The operation member 49 is connected to a known rotary lock (not shown) attached to a side cover (not shown) that covers the outside of the seat rail 3, and the lock shown in FIG. The lock pin 43 (FIG. 6) of the device 34 is moved.

  Therefore, when the two strikers 33 are inserted into the lock holes 38, the locking device 34 retracts the striker 33 into the holding hole 42 while the guide portion 33 b of the striker 33 is in sliding contact with the lock portion 43 a of the lock pin 43. When the striker 33 is completely inserted into the lock hole 38, the lock pin 43 protrudes by the spring force, and the lock portion 43a of the lock pin 43 is fitted into the locked groove 33c of the striker 33. The rear seat 11 is locked. The locking device 34 is a double lock mechanism including two strikers 33 and lock pins 43. In order to unlock the locking device 34, the rotary lock is operated by key operation, and the lock portion 43 a of the lock pin 43 of FIG. 6 is extracted from the guided groove 33 c of the striker 33 by the operation member 49 of FIG.

  An article storage unit 51 is provided below the front seat 10 in FIG. In this embodiment, as shown in FIG. 7, a case is shown in which a tool box 51 that opens upward and has a substantially rectangular container shape in plan view is provided as the article storage unit 51. Four support pieces 53 having welding nuts 52 provided on the lower surface are fixed to the pair of left and right seat rails 3 by welding in such a manner as to face each other on the left and right sides. On the other hand, four attachment pieces 54 having insertion holes 54 a are fixed to the tool box 51 so as to protrude outward in an arrangement corresponding to the support pieces 53. The tool box 51 is inserted between the left and right seat rails 3, and a bolt (not shown) is screwed into the welding nut 52 through the insertion hole 54 a in a state where the mounting piece 54 is superimposed on the corresponding support piece 53. Thus, the two seat rails 3 are supported.

  Next, an operation procedure for attaching and detaching the front seat 10 and the rear seat 11 of FIG. 1 to the vehicle body frame FR will be described. At the time of attachment, the hook 19 constituting the front side locking portion 18 of the front seat 10 is inserted into the locking recess 20a of the locking tool 20 fixed to the main frame 1, and then the front seat 10 with the locking recess 20a as a fulcrum. The rear part is rotated downward, and the projections 28 as the engaging bodies are inserted into the fitting holes 27a of the fitting members 27 as the two engaged bodies constituting the rear side engaging part 29 of the front seat 10, respectively. Let As a result, the front seat 10 is supported by both the seat rails 3 with the rubber dampers 30a on the lower surfaces of the four support leg portions 30 being in contact with the left and right seat rails 3, and the front locking portion 18 and the rear side engagement. The joint portion 29 is positioned so as to be immovable horizontally and downward. Variations in the relative positions of the front locking portion 18, the rear engagement portion 29 and the support leg 30 of the front seat 10 are absorbed by the elastic deformation of the rubber dampers 30 a of the four support legs 30.

  Subsequently, as shown in FIG. 4, the rear portion of the rear seat 11 is locked to the rear fender 9 by inserting the hook 31 at the rear portion of the rear seat 11 into the hooked portion 32 a of the hooked device 32, and then the rear seat 11. The front part is turned downward with the hooked part 32a as a fulcrum, and the two strikers 33 at the front part of the rear seat 11 are inserted into the lock holes 38 of the locking device 34 as shown by arrows in FIG. The positioning guide shaft 39 of the locking device 34 is fitted into the fitting hole 40 of the rear seat 11. As a result, the locking device 34 is locked, and the rear seat 11 is fixed to the vehicle body frame FR via the cross member 5.

  In a state where the rear seat 11 is locked, the bottom surfaces of the left and right pressing portions 41 of the rear seat 11 come into contact with the upper surface of the fitting member 27 in the rear engagement portion 29 as indicated by a two-dot chain line in FIG. For this reason, the rear engaging portion 29 is prevented from being detached from the projection 28 by the pressing portion 41, so that the front seat 10 cannot be detached from the vehicle body frame FR by the pressing portion 41 of the rear seat 11. . At this time, since the projection 28 of the rear engagement portion 29 is set to be shorter than the length of the fitting hole 27 a of the fitting member 27, the bottom surface of the presser portion 41 contacts only the upper surface of the fitting member 27. Therefore, variations in the relative positions of the hook 31, the support leg 47, and the presser 41 of the rear seat 11 of FIG. 4 can be absorbed by the elastic deformation of the fitting member 27 together with the rubber damper 47a. Further, since the front portion of the locked rear seat 11 covers at least the upper portion of the locking device 34 into which the striker 33 is inserted on the upper surface, the locking device 34 is concealed by the front portion of the rear seat 11 and is mischievous. Is prevented. In this embodiment, since the rear seat 11 also covers both sides of the locking device 34, mischief is prevented more effectively.

  Therefore, in this mounting structure, since the front seat 10 is locked by the pressing portion 41 of the rear seat 11, a separate member for preventing separation such as a conventional connecting portion and an operating portion is unnecessary, and the number of parts is reduced. Therefore, the structure is simplified. Moreover, since the locking device 34 and the pair of left and right projections 28 are mounted on the common cross member 5, the number of parts is not increased.

  Next, when removing the rear seat 11 and the front seat 10 in order to take out the tools and the like stored in the tool box 51 of FIG. 1, the rotary lock (not shown) is operated by key operation in the unlocking direction. The locking device 34 is unlocked via the operation member 49. Thereby, the locked state of the rear seat 11 is released.

  When the front portion of the rear seat 11 is lifted and released in the unlocked state, the presser portion 41 of the rear seat 11 is retracted upward from the fitting member 27 of the rear engagement portion 29, so that the rear portion of the front seat 10 in FIG. The fitting member 27 can be lifted and removed from the protrusion 28. Therefore, unlike the prior art, in order to lock the front seat 10, there is no need to provide a connecting portion for connecting the two seats 10, 11, and it is also necessary to provide a dedicated operation portion for detaching the front seat. Therefore, the structure is simplified. Furthermore, when removing the front seat, the operation of the operation unit dedicated to the front seat is not required, so that the operability is improved.

  Further, since the front seat 10 is also used as a lid member for the tool box 51, the stored items in the tool box 51 can be prevented from being stolen. When the rear seat 11 is unlocked and the front seat 10 is opened, the stored item in the tool box 51 can be immediately taken out, and this operation can be performed without using any removal tool.

  Next, a second embodiment of the present invention will be described. In FIG. 8, a lock bracket 65 is attached to a rear fender 9 by a fixture 61 made up of a bolt 62 and a nut (not shown). This lock bracket 65 is obtained by bending a metal plate material. 9. As shown in the plan view of FIG. 9, the front portion has an engagement seat 66, the rear portion has a lock seat 67, and both side portions have mounting legs 68, 68. The engagement seat 66 is formed with a pair of left and right mounting holes 70, and the mounting leg 68 is formed with an insertion hole 71 for a bolt 62 (FIG. 8). The locking device 34 shown in FIG. 8 is fixed to the lock seat 67 of the locking bracket 65, and the projection 28 made of a metal pin is fixed to the mounting hole 70 (FIG. 9) of the engagement seat 67 by welding. .

  The rear engagement portion 29 that engages the rear portion of the front seat 10 of FIG. 1 with the rear fender 9 is a fitting member provided on the support arm 24 of FIG. 8 fixed to the front seat 10 as in the first embodiment. 27 and the projection 28, and the projection 28 is fitted into the fitting hole 27 a of the fitting member 27. When the striker 33 of the rear seat 11 is inserted into the lock hole 38 of the locking device 34 and the rear seat 11 is locked, the bottom surface of the pressing portion 41 of the rear seat 11 contacts the upper surface of the fitting member 27 of the rear engagement portion 29. Alternatively, the fitting member 27 and the protrusion 28 are prevented from separating from each other.

  According to the second embodiment, the protrusion 28 and the locking device 34 of the rear engagement portion 29 are attached to the rear fender 9 of FIG. 8 instead of the cross member 5 having the small front-rear dimension of FIG. Since the locking bracket 65 is larger than the cross member 5 and has a dimension in the vehicle body width direction smaller than that of the cross member 5, the protrusion 28 can be disposed not on the outside of the locking device 34 but on the front side. Therefore, by setting the position of the projection 28 closer to the center of the vehicle body, the rear engagement portion 29 is difficult to see from the outside of the vehicle body when both the seats 10 and 11 (FIG. 1) are mounted, and the appearance is improved.

  The present invention can be applied to various straddle-type vehicles such as a three-wheeled vehicle, an irregular terrain traveling four-wheeled vehicle, and a small boat, in addition to the motorcycle shown in the embodiment. Furthermore, various additions, modifications, or deletions can be made without departing from the scope of the present invention, and such modifications are also included in the scope of the present invention. For example, the presser portion 41 shown in FIG. 6 or FIG. 8 contacts or approaches a portion of the arm 24 different from the rear engagement portion 29 so as to prevent the rear engagement portion 29 from being disengaged. Also good.

1 is a partially broken side view of a main part of a motorcycle having a seat mounting structure according to a first embodiment of the present invention. (A), (b) is the side view and top view which show the hook and latch which comprise the front side latching | locking part in the attachment structure same as the above. It is a top view of a front seat. It is the partial fracture | rupture perspective view which looked at the attachment part of the rear seat in the attachment structure same as the above from the side. It is a top view of a rear seat. It is the partial fracture | rupture perspective view which looked at the locking device in the attachment structure same as the above from the front. It is a disassembled perspective view which shows the structure which attaches the article | item storage part in the attachment structure same as the above. It is a perspective view of the principal part of the motorcycle provided with the seat attachment structure of 2nd Embodiment of this invention. It is a top view which shows the bracket for locking of the embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main frame 3 Seat rail 5 Cross member 9 Rear fender 10 Front seat 11 Rear seat 18 Front side latching part 24 Arm 27 Fitting member (engaged body)
27a Fitting hole 28 Protrusion (engagement body)
29 Rear engagement portion 34 Locking device 41 Presser portion 51 Tool box (article storage portion)
65 Bracket FR for locking Body frame

Claims (10)

The front and rear seats are detachably supported on the body frame,
A rear engagement portion that engages a rear portion of the front seat with the vehicle body frame is provided with an engagement body provided on one of the vehicle body frame and the front seat, and a latch engaged with the engagement body provided on the other side. Consisting of coalescence,
The rear seat is configured to be lockable to the body frame,
A seat mounting structure in which the rear seat is provided with a pressing portion that prevents the engagement body and the engaged body from being separated from each other while being in contact with or close to the rear engagement portion while being locked to the vehicle body frame. .   2. The seat mounting structure according to claim 1, wherein the engaging body has a protrusion, and the engaged body has a fitting hole that fits into the protrusion.   3. The seat mounting structure according to claim 2, wherein the engaged body includes a fitting member made of an elastic body and having the fitting hole.   4. The arm according to claim 1, wherein the front seat is provided with an arm that protrudes rearward from the front seat, and the engagement body is provided on one of the vehicle body frame and a protruding tip portion of the arm. The seat mounting structure is provided with the engaged body on the other side.   The seat mounting structure according to any one of claims 1 to 4, wherein the rear seat covers at least an upper part of the locking device.   6. The seat mounting structure according to claim 5, wherein the locking device and the engaging body or the engaged body are attached to a cross member extending in the width direction of the body frame.   6. The seat mounting structure according to claim 5, wherein the locking device and the engaging body or the engaged body are mounted on a rear fender that covers at least the upper part of the rear wheel via a locking bracket.   The seat mounting structure according to any one of claims 1 to 7, wherein an article storage portion is provided below at least one of the front seat and the rear seat. In any one of Claims 1 to 8,
The engagement body and the engaged body of the rear engagement portion are engaged with each other so as to be separated in the vertical direction,
The presser part prevents the rear part of the front seat from moving upward by contacting or approaching the rear engagement part,
And a front locking portion that locks the front portion of the front seat to the vehicle body frame and allows the engaging body and the engaged body to be engaged and disengaged in the vertical direction in the locked state. Sheet mounting structure.   A motorcycle comprising the seat mounting structure according to any one of claims 1 to 9.

Images