JP3645410B2 - Integrated structure of motorcycle seat and rear cowl - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an integrated structure of a motorcycle seat and a rear cowl.
[0002]
[Prior art]
Japanese Patent Publication No. 63-6397 shows a structure in which the opening portion of the rear cowl is covered with a seat from above and the rear cowl and the seat are separately attached to the seat rail.
[0003]
[Problems to be solved by the invention]
By the way, if the rear cowl and the seat are separately attached to the seat rail as described above, the general seat is made of resin and the bottom plate is made of resin. Becomes difficult. As a result, it is difficult to increase the mounting accuracy with the rear cowl necessary for ensuring a clean alignment at all times.
[0004]
On the other hand, it is conceivable to integrate the seat and the rear cowl. However, in this case, it becomes difficult to prevent deformation at the middle part in the front-rear direction of the rear cowl and to secure rigidity in the vicinity of the lower end edge on the open side in the vertical direction. In order to make it practicable, the rigidity of this part must be increased to suppress deformation.
[0005]
[Means for Solving the Problems]
In order to solve the above problems, a first invention relating to an integrated structure of a motorcycle seat and a rear cowl of the present application includes a seat supported by a seat rail, and a rear cowl disposed below and covering a rear portion of the vehicle body. In a motorcycle equipped with
By attaching the rear cowl to the seat bottom plate in the left-right direction of the vehicle body,
A hollow cylindrical support portion that integrally projects from the bottom plate to the inside of the rear cowl is integrally provided,
The lower end portion of the support portion is connected to the inner surface of the rear cowl in the front-rear direction and the intermediate portion in the up-down direction by connection from the left-right direction of the vehicle body and from the inside of the vehicle body .
[0006]
In a second aspect based on the first aspect, the rear cowl is divided into a left part, a central part, and a right part, and the left and right end parts of the central part are inserted and overlapped below the adjacent end parts of the right and left side parts. In the normal state where no load is applied to the lower portion of the protrusion on the central portion, a gap is formed between the lower portion of the protrusion and the seat rail. It is characterized by that.
At this time, the lower end portion of the protrusion can be inclined along the seat rail.
[0007]
【The invention's effect】
According to the first invention, since the rear cowl is attached to the bottom plate of the seat, the seat and the rear cowl can be integrated, and even if the bottom plate of the seat is deformed, the mating portion with the rear cowl does not change, and the mating portion is always kept clean. It is possible to control the individual mounting accuracy with respect to the seat and the rear cowl. In addition, when the seat is removed, the rear cowl is also integrally removed, so that the maintainability is improved.
[0008]
In addition, the lower end of the support portion that extends downward from the bottom plate is coupled to the left and right sides of the vehicle body and from the inside of the vehicle body to the front and rear middle portion of the rear cowl and the inner surface of the middle portion of the rear cowl. It is possible to prevent the deformation of the rear cowl in the middle part in the front- rear direction and in the vicinity of the edge side that is the open side in the up-down direction , and it is possible to maintain the good appearance without making the coupling part appear. In addition, even if the seat and the rear cowl are integrated, the product of the rear cowl can be made sufficiently high, and the number of processing steps can be reduced and the cost can be reduced as compared with the case where the rear cowl alone has a high rigidity. Moreover, since the support part is made into the hollow cylinder shape, it can be reduced in weight although it is highly rigid.
[0009]
According to the second invention, when a load is applied by placing a load or the like on the center portion of the rear cowl, the center portion of the rear cowl is deformed downward, but the protrusion formed on the back surface thereof contacts the seat rail. It receives a load by contact. For this reason, the excessive deformation | transformation in the center part of a rear cowl can be prevented. In addition, by forming the thick protrusions integrally, even if sink marks, which are deformations due to heat shrinkage, occur on the surface, the deformation parts are hidden under the adjacent left and right side parts. Such a deformed portion does not appear, and as a result, the rear cowl center portion can be easily molded.
In addition, since the lower end of the protrusion forms a gap with the seat rail in a normal state where no load is applied to the center, a load is applied 2201 by placing a load on the center, etc. Even if it is deformed, since the lower end portion of the protrusion abuts against the seat rail, the load is received by the seat rail via the protrusion, so that excessive deformation can be prevented.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment will be described below with reference to the drawings. 1 to 13 show a first embodiment. FIG. 1 is a front and rear sectional view showing a mounting structure of a seat bottom plate and a rear cowl, FIG. 2 is a plan view thereof, and FIG. 3 is an external side view of a motorcycle. 4 is a half sectional view taken along line 4-4 in FIG. 1, FIG. 5 is a sectional view taken along line 5-5, FIG. 6 is a half sectional view of the sheet taken along line 6-6 in FIG. FIG. 8 is a partial sectional view of one side of the seat taken along line 7-7 in FIG. 2, FIG. 8 is an assembly view showing the mounting structure of the support, FIG. 9 is a perspective view of the rear cowl, and FIG. 10 is a plan view of the seat rail. 11 is a cross-sectional view showing the attachment structure of the front part of the rear fender, FIG. 12 is a cross-sectional view showing the detailed structure of the seat lock part, and FIG. 13 is a cross-sectional view showing the attachment structure of the rear part of the rear fender.
[0011]
First, the overall structure of the motorcycle will be briefly described with reference to FIG. 1 is a front wheel, 2 is a front fork, 3 is a handle, 4 is a head pipe, 5 is a main frame, 6 is a power unit, 7 is a joint plate, 8 is a seat rail, 9 is a swing arm, 10 is a rear wheel, and 11 is a buffer. , 12 is a fuel tank, 13 is a seat, 14 is a rear cowl, 15 is a taillight, 16 is a rear fender front portion, and 17 is a rear fender rear portion.
[0012]
The power unit 6 includes a V-type engine, and a joint plate 7 made of an iron plate press product is attached to the upper part of the left and right side surfaces of the rear part of the power unit 6, respectively. The front end portions of the seat rails 8 are respectively attached.
[0013]
The main frame 5 is composed of pipe members 5a and 5b that are arranged side by side with a space in the vertical direction and a plurality of reinforcing pipes 5c that connect them. The rear swing arm 9 is rotatably supported by a pivot 19 on a pivot bracket 18 attached to the power unit 6 at the front end.
[0014]
As is apparent from FIGS. 1 and 10, the seat rail 8 is disposed in a pair of left and right in the front-rear direction, and a rear end portion of the sub pipe 20 is attached to each front portion on the left and right. The front end portions of the left and right seat rails 8 and the sub-pipe 20 are attached to the joint plate 7.
[0015]
Between the left and right seat rails 8 and the sub-pipe 20, a cross pipe or the like for reinforcement is installed. That is, the sub pipe 20 is provided with a first cross pipe 21, and the seat rail 8 is overlapped with the second cross pipe 22 in the vicinity of the connecting portion of the sub pipe 20, the cross plate 23 in the middle portion in the front-rear direction, and the rear end portion. A three cross pipe 24 and a fourth cross pipe 25 at the rear end are provided.
[0016]
The third cross pipe 24 is provided with a seat lock stay 26 to which a seat lock 27 is attached. Hooks 28 projecting outward are provided in the vicinity of the fourth cross pipe 25 in the left and right seat rails 8, and end portions 28 a and 28 b of each hook 28 project beyond the seat rail 8 toward the vehicle body center side. . A fender stay 29 is attached to each rear end portion of the left and right seat rails 8.
[0017]
Next, the seat and rear cowl mounting structure will be described. As shown in FIGS. 1 and 2, the sheet 13 is a tandem type and includes a resin base plate 30. A bifurcated portion 31 is provided at the front end of the bottom plate 30, and the front end portion side of the seat 13 is supported by the fuel tank 12 by sandwiching an attachment portion 32 formed to protrude from the rear end portion of the fuel tank 12. Yes.
[0018]
The bottom plate 30 changes from the front seat portion 33 to the rear seat portion 34 in a stepped manner at the intermediate portion 35, and a seat lock fitting 36 is provided on the back surface of the rear seat portion 34 near the intermediate portion 35 so as to protrude downward. ing. The seat lock fitting 36 is locked to a seat lock 27 attached to the seat lock stay 26, whereby the seat 13 is detachably fixed to the seat rail 8.
[0019]
As is apparent from FIG. 12, ribs 37 and 38 projecting downward are formed integrally on the back surface of the bottom plate 30 before and after the seat lock fitting 36 is sandwiched, and the lower end portions of the bottom plate 30 are the front and rear end portions of the cross plate 23. A closed space 39 surrounding the seat lock 27 is formed by the ribs 37 and 38, the cross plate 23 and the bottom plate 30. Here, the closed space means the extent that a hand cannot be reached from the outside. [0020]
As apparent from FIG. 2, a plurality of bosses 40 are formed on the rear seat portion of the bottom plate 30 so as to protrude vertically along the edge. Further, on the left and right in the vicinity of the intermediate portion 35, a support portion 42 that is formed in a cylindrical shape and protrudes downward is formed, and a lower end portion thereof is formed with a slit 43 that is substantially U-shaped downward (FIG. 8).
[0021]
In addition, a slit 44 having a substantially U-shape is formed in a portion forming a standing wall shape on the side surface of the intermediate portion 35 which is a portion corresponding to the cross-section indicating line 7-7 in the drawing, and the clip 45 is overlapped with the slit 44. Installed. The clip 45 is an elastic member having a substantially U-shaped cross section. The clip 45 is attached at this portion with a thickness near the slit 44 from a hole 47 formed in the intermediate portion 35, and the integral nut portion 46 extends to the slit 44. They overlap (Fig. 7).
[0022]
On the other hand, as clearly shown in FIG. 9, the rear cowl 14 is formed of a suitable resin and has a substantially U-shape in a top view including a left side portion 50 and a right side portion 51 that are divided left and right from the vehicle body center and extend forward. A plurality of mounting portions 52 projecting toward the center of the vehicle body are formed at the upper edge that surrounds the opening covered by the bottom plate 30 of the seat, and a pair of mounting portions 53 projecting upward at the left and right front end portions, respectively. It is integrally formed.
[0023]
These mounting portions 52 and 53 are provided with through holes 54 and 55, respectively, and the mounting portion 52 is overlapped with the boss 40 of the bottom plate 30 as shown in FIG. The As shown in FIG. 7, the front end portion of the rear cowl 14 is also fastened and integrated with a tapping screw 57 from the inside, with the mounting portion 53 overlapped with the clip 45 so that the slits 44 and 55 are aligned.
[0024]
Further, as shown in FIGS. 4 and 8, an integral boss 60 is formed so as to project at a position corresponding to the slit 43 at the lower end of the support portion 42 inside each of the left portion 50 and the right portion 51 of the rear cowl 14. Here, the lower end portion of the support portion 42 is integrated from the inner side in the left-right direction of the vehicle body to the inner surface of the rear cowl 14 by a bolt 63 via a collar 61 and a washer 62. The position of the boss 60 is the middle portion of the rear cowl 14 in the vertical direction, and corresponds to the vicinity of the lower end edge on the open side of the vertical ends . Further, as shown in FIG. 9, the position of the boss 60 is also an intermediate portion in the front-rear direction of the rear cowl.
[0025]
Reference numeral 64 in FIG. 4 denotes an insert nut of the boss 60. In FIG. 6, reference numeral 65 is a seat belt, 66 is a cushion material covered with a skin (not shown), 67 is a fixing bolt for the seat belt 65, and the seat belt 65 is attached to the bottom plate together with the reinforcing metal bracket 68. 30 is attached.
[0026]
As can be seen from FIG. 1, the rear fender is configured as a separate fender that is separated into a rear fender front portion 16 and a rear fender rear portion 17 and is disposed at a distance in the front-rear direction, and is supported by the seat rail 8 or the sub-pipe 20, respectively.
[0027]
As apparent from FIG. 11, the rear fender front portion 16 also serves as a battery box, and a battery 71 is accommodated in an accommodating portion 70 formed as a recess for that purpose. However, other electrical components such as fuses and ignition units and other articles are also accommodated as appropriate.
[0028]
The rear fender front portion 16 is engaged with the first cross pipe 21 from above by hook portions 72 formed on the bottom portion on the front side, and the rear portion is fastened to the side surface of the sub pipe 20 with bolts 73 to the sub pipe 20. Installed.
[0029]
The lower part of the rear fender front part 16 projects downward from the front extension part 30a (FIG. 1) of the seat bottom plate 30 to form an external part, and a key operation part 74 for unlocking the seat lock 27 on the side surface. Is provided.
[0030]
When a key (not shown) is inserted into the key operation portion 74 and rotated, the one end is connected to the key operation portion 74 and the other end is passed through the operation wire 75 attached to the seat lock 27 through the seat rail 8. It comes to lock.
[0031]
As apparent from FIG. 13, the rear fender rear portion 17 locks the engagement portion 80 at the front end to the extension portion 28 a of the hook portion 28 from the rear, and the stay 29 extends from the rear end portion of the seat rail 8 at the rear side surface. It is attached to the seat rail 8 by being fastened with a heavy bolt 81. The other extension 28b is also engaged from above with a recess formed in the upper end of the front part on the side wall of the rear part of the rear fender.
[0032]
The rear fender rear portion 17 has a container shape opened upward, and ribs 82 and 83 are formed on the front and rear sides of the rear fender so as to be substantially parallel to the seat rail 8. A space 84 in between is a document compartment.
[0033]
Next, the operation of this embodiment will be described. As apparent from FIGS. 1 and 2, since the rear cowl 14 is attached to the bottom plate 30 of the seat 13, the seat 13 and the rear cowl 14 can be integrated, and even if the bottom plate 30 of the seat 13 is deformed due to load fluctuations, the rear cowl 14 Therefore, it is not necessary to manage the mounting accuracy of the rear cowl 14 and ensure the rigidity of the rear cowl 14 alone.
[0034]
In addition, when it is necessary to remove the seat 13 and the rear cowl 14 during maintenance, the rear cowl 14 is also removed as a result of removing the seat 13, so that it is not necessary to remove them separately, and the maintainability is improved.
[0035]
Further, since the support portion 42 that integrally extends from the bottom plate 30 supports the inner surface of the rear cowl 14, the rigidity of the rear cowl 14 is increased, and the rear cowl 14 is deformed in the middle portion in the front-rear direction and is the open side of the end portions in the vertical direction. Deformation near the lower edge can be prevented. In particular, in the present embodiment, since the support portion 42 is formed in a cylindrical shape, the weight can be reduced although the rigidity is high. Further, since the support portion 42 is attached to the inner surface of the rear cowl 14 from the inner side in the left-right direction of the vehicle body, it is possible to maintain good appearance.
[0036]
For this reason, despite the integration of the seat 13 and the rear cowl 14, it is possible to obtain sufficiently high merchantability, and the processing man-hours and the like are reduced compared to the case where the rear cowl 14 is made to have high rigidity alone. Cost can be reduced.
[0037]
In addition, when the seat lock 27 is unlocked and the seat 13 is removed, the rear cowl 14 is also removed integrally with the seat 13 and the upper part is opened, so that the document is passed into the space 84 through the lower part of the fourth cross pipe 25 from the front or rear. The document can be stored by inserting and the fourth cross pipe 25 also serves as a document holder.
[0038]
14 to 17 show another embodiment in which the structure of the rear cowl is changed, FIG. 14 is a plan view of the rear cowl, FIG. 15 is a view showing the rear side of the rear cowl, FIG. 16 is a sectional view taken along line 16-16 in FIG. 17 is a cross-sectional view taken along line 17-17 in FIG. In the following, parts common to the previous embodiment will be described using the same reference numerals.
[0039]
The rear cowl 14 is made of resin and has a three-part structure including a vehicle body center and a central portion 90 in the vicinity thereof, and a left side portion 91 and a right side portion 92 on both left and right sides (FIG. 14). The left and right side end portions 93 of the central portion 90 are stepped so as to be lower by the thickness, and enter the lower side of the upper end portions 94 and 95 of the adjacent left side portion 91 and right side portion 92 to overlap vertically. .
[0040]
In addition, a cylindrical projecting portion 96 is integrally formed from both left and right side end portions 93 so as to project toward the upper surface of the seat rail 8, and each lower end portion is in a normal state where no load is applied to the central portion 90. A slight gap of dimension d is formed (FIG. 17).
[0041]
In this way, even if a load is applied and deformed by placing a load on the central portion 90 or the like, the lower end portion of the projection 96 abuts against the seat rail 8, so that the seat rail is interposed via the projection 96. Since the load is received by 8, excessive deformation can be prevented.
[0042]
In addition, even if heat sink deformation occurs on the surface by forming the thick protrusion 96 integrally with the central portion 90, the deformed portion is formed on the upper end portions 94, 95 of the adjacent left portion 91 and right portion 92. Since it is hidden underneath, such a deformed portion does not appear, and as a result, the central portion 90 can be easily molded.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a seat bottom plate and a rear cowl portion according to a first embodiment. FIG. 2 is a plan view thereof. FIG. 3 is an external side view of a motorcycle. 1 is a cross-sectional view taken along line 5-5 in FIG. 1. FIG. 6 is a cross-sectional view taken along line 6-6 in FIG. 1. FIG. 7 is line 7-7 in FIG. FIG. 8 is a partial cross-sectional view of the seat taken along the line. FIG. 8 is an assembly view showing the mounting structure of the support. FIG. 9 is a perspective view of the rear cowl. FIG. 10 is a plan view of the seat rail. FIG. 12 is a sectional view showing a detailed structure of a seat lock portion. FIG. 13 is a sectional view showing a mounting structure of a rear fender rear portion. FIG. 14 is a plan view of a rear cowl according to a second embodiment. FIG. 16 is a cross-sectional view taken along the line 16-16 in FIG. Sectional view taken along the line 17-17 [EXPLANATION OF SYMBOLS]
8: Seat rail, 13: Seat, 14: Rear cowl, 16: Rear fender front part, 17: Rear fender rear part, 27: Seat lock, 30: Bottom plate, 42: Support part

Claims (3)

In a motorcycle including a seat supported by a seat rail and a rear cowl disposed below and covering a rear portion of the vehicle body,
By attaching the rear cowl to the seat bottom plate in the left-right direction of the vehicle body,
A hollow cylindrical support portion that integrally projects from the bottom plate to the inside of the rear cowl is integrally provided,
An integrated structure of a motorcycle seat and a rear cowl, wherein a lower end portion of the support portion is coupled to the inner surface of the rear cowl in the front-rear direction and in the middle of the vertical direction by coupling from the left and right sides of the vehicle body and from the inside of the vehicle body. .   The rear cowl is divided into a left part, a central part, and a right part, and the left and right ends of the central part are overlapped by entering the lower sides of the adjacent left and right side parts, and project toward the seat rail on the back of the central part. The automatic device according to claim 1, wherein a protrusion is provided integrally and a gap is formed between the protrusion and the seat rail in a normal state where no load is applied to the central portion. Integrated structure for motorcycle seat and rear cowl.   The integrated structure of a motorcycle seat and a rear cowl according to claim 2, wherein a lower end portion of the protrusion is inclined along the seat rail.

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