JP2005119607A - Scooter type motorcycle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To arrange a water feed part of a reservoir tank without damaging an outer appearance of a vehicle body while reducing cost. <P>SOLUTION: A tray 34 facing to the water feed part of the reservoir tank 11 is formed on a side of a battery box 33 of a foot board 21. A lid is formed to block the tray 34 and the battery box 33. A barrier wall 35 for forming the battery box 33 and the tray 34 is provided on the foot board 21. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a scooter type motorcycle in which a battery box for storing a battery is provided on a footboard.

    A conventional scooter type motorcycle of this type is disclosed in Non-Patent Document 1, for example. The scooter type motorcycle shown in Non-Patent Document 1 is provided with a footboard so as to constitute a low floor between the front wheels and the rear wheels, and travels by driving the rear wheels by a unit swing type power unit. Is. A battery box for storing a battery is provided at the rear end of the footboard and in the center in the vehicle width direction.

  This battery box is formed to have a box shape that opens upward, and a lid is detachably attached to an opening at the upper end. This lid is formed so as to close the opening of the battery box, and covers and protects the battery stored in the battery box from above, and the battery is exposed to the outside of the vehicle body and the appearance of the vehicle body is damaged. Is preventing. The lid is formed so as to be a part of the vehicle body cover that covers the lower part of the seat, and is removed from the footboard when performing maintenance of the battery stored in the battery box.

The power unit is configured such that an engine is located behind the footboard. This engine is an air-cooled two-cycle single-cylinder type, and is formed so that the axis of the cylinder faces the front of the vehicle body.
On the other hand, as a motorcycle equipped with a water-cooled engine, for example, as disclosed in Patent Document 1, a radiator and a reservoir tank are provided in the vicinity of the cylinder head of the engine. An example of such a scooter type motorcycle is disclosed in Patent Document 2. The engine disclosed in Patent Document 2 is configured such that the axis of the cylinder is directed in the front-rear direction, and is mounted behind the footboard.
In addition, the applicant could not find any prior art documents closely related to the present invention by the time of filing other than the prior art documents specified by the prior art document information described in the present specification. .
Japanese Patent Laid-Open No. 11-91668 (FIG. 1) JP-A-8-175449 (FIG. 1) Yamaha CV50 (5KN1,2,3,4) Parts Catalog Page 90 February 2002 Issued by Yamaha Motor Co., Ltd.

The inventor considers replacing the engine of the scooter type motorcycle having the configuration shown in Non-Patent Document 1 with a water-cooled four-cycle type engine. However, in order to mount a water-cooled engine, there has been a problem in preventing a water supply portion of a reservoir tank for supplying cooling water from appearing on the exterior of the vehicle body. Depending on the position of the water supply portion, a lid that covers the water supply portion must be detachably provided on the vehicle body cover so that the appearance of the vehicle body is not impaired, resulting in an increase in cost. Because. It should be noted that the water supply portion of the reservoir tank must be provided at a position where no trouble occurs even if the cooling water is spilled or scattered when the cooling water is replenished.
In addition, when a four-cycle engine is mounted on the scooter type motorcycle, the cylinder head is positioned near the rear of the footboard, which makes it difficult to perform maintenance of the cylinder head such as tappet adjustment. .

  The present invention has been made to solve such problems, and a first object is to dispose the water supply portion of the reservoir tank so as not to impair the appearance of the vehicle body while reducing the cost. And A second object of the present invention is to facilitate maintenance of a cylinder head even when a four-cycle engine is mounted.

  In order to achieve this object, a scooter type motorcycle according to the present invention is provided with a battery box that opens upward on a footboard located between a front wheel and a rear wheel, and the opening of the battery box is closed. In the scooter type motorcycle provided with a lid body, a recess is formed on a side of the battery box on the footboard so that a water supply portion of the reservoir tank faces, and the recess and the battery box are closed. A lid is formed, and a partition that defines the recess and the battery box is provided on the footboard.

  The scooter type motorcycle according to the invention described in claim 2 is provided with a battery box that opens upward on a footboard located between the front wheel and the rear wheel, and an engine cylinder is disposed behind the battery box. In the disposed scooter type motorcycle, at least the upper part of the rear wall of the battery box is formed to be detachable from other parts.

As described above, according to the present invention, the water supply portion of the reservoir tank can be covered with the lid that closes the opening of the battery box. For this reason, it is possible to reduce the number of parts and the number of assembling steps as compared with the case where a lid that covers the water supply portion of the reservoir tank is exclusively provided, and the cost can be reduced.
Further, even if the cooling water is spilled or scattered when the cooling water is supplied to the reservoir tank, the partition wall can prevent the cooling water from entering the battery box.

  According to the second aspect of the present invention, by removing at least the upper part of the rear wall of the battery box, the maintenance space formed in front of the cylinder head of the engine is opened forward. For this reason, the scooter type motorcycle according to the present invention can be equipped with a four-cycle engine while allowing easy maintenance of the cylinder head.

Hereinafter, an embodiment of a scooter type motorcycle according to the present invention will be described in detail with reference to FIGS.
1 is a side view of a scooter type motorcycle according to the present invention, FIG. 2 is an enlarged plan view of a footrest, FIG. 3 is an enlarged side view of a reservoir tank mounting portion, and FIG. 4 is a plan view of the same. 5 is a plan view showing an enlarged main part, FIG. 6 is a sectional view taken along the line VI-VI of the foot board in FIG. 5, and FIG. 7 is a sectional view taken along the line VII-VII in FIG. FIG. 8 is a side view showing an opening for visually confirming the amount of stored water.

In these drawings, reference numeral 1 denotes a scooter type motorcycle (hereinafter simply referred to as a scooter) according to this embodiment. The scooter 1 is provided such that a footrest 4 forms a low floor between a front wheel 2 and a rear wheel 3, and travels by driving the rear wheel 3 by a unit swing type power unit 5.
The power unit 5 includes a water-cooled four-cycle single-cylinder engine 6 and is supported by a vehicle body frame 7 described later so as to be swingable in the vertical direction.

The engine 6 is configured such that the axis of the cylinder 8 is oriented in the front-rear direction of the vehicle body. Although not shown, a fan is provided at the right end of the crankshaft and the rear end of the left side of the vehicle is provided at the rear. A V-belt type continuously variable transmission for wheel drive is provided. A radiator 9 (see FIG. 3) is provided at the side of the fan, that is, at the end of the engine 6 on the right side of the vehicle body. The radiator 9 has a structure in which cooling water flows from the upper tank 9a to the lower tank 9b, and is connected to the cooling water passage of the engine 6 by a cooling water hose (not shown). A reservoir tank 11 is connected to the upper tank 9 a of the radiator 9 via a reservoir pipe 10.
In FIG. 1, 12 indicates a front fork, 13 indicates a steering handle, and 14 indicates a seat.

  The body frame 7 is connected to a head pipe 15 that supports the front fork 12 in a steerable manner, a single down tube 16 extending from the head pipe 15 to the footrest 4, and a rear end portion of the down tube 16. The left and right rear frame 17 (see FIGS. 2 and 4) and the like. The rear end portion of the down tube 16 extends to the lower side of a footrest 4 described later. As shown in FIG. 3, the front end portion of the rear frame 17 extends in the front-rear direction of the vehicle body inside the footrest 4, bends in the vicinity of the rear end portion of the footrest 4, and inclines rearwardly. It is formed as follows.

  As shown in FIGS. 1 and 7, the footrest 4 includes a footboard 21 for placing occupant's feet, an under cover 22 that covers the footboard 21 from below, and both sides of these members on the side. It is comprised by the side molding 23 etc. which cover from the direction. Inside the footrest 4, a space for accommodating the rear end portion of the down tube 16, the front end portion of the rear frame 17, a reservoir tank 11 described later, and the like is formed.

As shown in FIGS. 2 and 4, the foot board 21 and the under cover 22 are attached to brackets 24 and 25 projecting from the rear frame 17 by mounting bolts 26. More specifically, the footboard 21 is mounted on the brackets 24 and 25 by mounting bolts 26 while being placed on the brackets 24 and 25. As shown in FIG. 3, the under cover 22 is integrally formed with a mounting stay 28 so as to extend upward from the bottom wall 27, and a flat plate portion at an upper end portion of the mounting stay 28 is the brackets 24, 25. And the footboard 21 are attached to the brackets 24 and 25 together with the footboard 21 by mounting bolts 26.
As shown in FIG. 3, the rear end portion of the bottom wall 27 of the under cover 22 is formed so as to be inclined rearward when viewed from the side. That is, rainwater that has entered the inside of the footrest 4 and cooling water that has spilled or scattered in the water supply portion of the reservoir tank 11 described later flows down on the bottom wall 27 and then flows backward, and the rear end of the bottom wall 27 To the road surface side.

Further, as shown in FIG. 2, the footboard 21 according to this embodiment has a footrest portion 31 on which the occupant puts his / her foot on the front side of the vehicle body, and as shown in FIG. A battery box 33 to be housed and a tray 34 formed of a recess facing the water supply portion of the reservoir tank 11 are formed integrally at the rear end. The footrest portion 31 is formed to have a flat plate shape, and the battery box 33 is formed in a box shape that opens upward. The tray 34 is formed to be lower than the footrest portion 31 with a step, and a circular through hole 34 a for allowing a water supply portion of the reservoir tank 11 to pass therethrough is formed.
Further, a partition wall 35 is provided between the tray 34 and the battery box 33 in the footboard 21 so as to protrude upward. As shown in FIG. 5, the partition wall 35 is formed in a portion between the battery box 33 and the tray 34 so as to extend without interruption from an end portion on the vehicle body front side to an end portion on the vehicle body rear side.

  Thus, the battery box 33 and the tray 34 formed on the footboard 21 are closed at the opening by a lid denoted by a reference numeral 36 in FIG. As shown in FIG. 6, the lid 36 has a flat plate portion 36a formed in a shape equivalent to the opening shape of the battery box 33 and the tray 34 in a plan view, and is inclined upward from the rear end of the flat plate portion 36a. The vertical plate portion 36b stands up and is fixed to the footboard 21 by mounting screws 37 (see FIG. 2) penetrating the flat plate portion 36a. The vertical plate portion 36b is formed so as to form a part of a vehicle body cover 38 (see FIG. 1) that covers the lower portion of the seat 14.

  As shown in FIG. 6, the rear wall 41 of the battery box 33 is detachably attached to the lower half 42 formed integrally with other parts of the battery box 33 and the lower half 42. The upper half part 43 is comprised. The upper half 43 is fitted and supported by a holder 44 formed in the lower half 42 so as to have a U-shaped cross section. The holder 44 is formed such that both end edges and lower end edges of the upper half in the vehicle width direction are detachably fitted in the vertical direction. In FIG. 6, what is indicated by reference numeral 45 is a cable connected to the battery 32.

  As shown in FIGS. 5 and 6, a cylinder head head 46 of the cylinder 8 is disposed behind the upper half 43, and in a state where the battery 32 is not stored in the battery box 33, By removing the upper half 43 from the lower half 42, the space S (maintenance space) in front of the cylinder head 46 is opened toward the front of the vehicle body. The cylinder head 46 is configured such that the head cover 47 can be removed from the front of the vehicle body and tappet adjustment can be performed from the front with the head cover 47 removed.

  As shown in FIGS. 3, 4 and 7, the reservoir tank 11 is disposed inside the footrest 4 at the right end of the vehicle body, and has an end on the front side of the vehicle body and an end on the rear side of the vehicle body. Are attached to the under cover 22. As shown in FIG. 7, the portion where the reservoir tank 11 is attached to the under cover 22 is formed on a support piece 51 protruding so as to extend upward on the bottom wall 27 of the under cover 22. A structure is adopted in which projecting pieces 52 projecting so as to extend in the direction are stacked and attached by mounting bolts 53.

  In this embodiment, the mounting seat surface 51a formed on the upper end portion of the support piece 51 and the protruding piece 52 are formed so as to incline downward to the right when viewed from the front of the vehicle body. . In this way, the seating surface 51a and the projecting piece 52 are inclined because the injection molding mold (not shown) for molding the under cover 22 and the blow molding mold for molding the reservoir tank 11 (not shown). This is because a simple structure that is released in the vertical direction is used.

As shown in FIG. 7, the water storage portion of the reservoir tank 11 is formed so as to have an L-shaped cross section, and the lower end portion is formed to extend to the inside of the vehicle body below the rear frame 17 on the right side of the vehicle body. .
A water supply pipe 54 is integrally formed at the upper end of the reservoir tank 11 on the rear side of the vehicle body so as to protrude upward. In this water supply pipe 54, a cap 55 is detachably attached to a water supply port 54a at the upper end. As shown in FIGS. 5 and 7, the water supply pipe 54 and the cap 55 are led to the outside of the footrest 4 through the through holes 34 a of the tray 34 formed in the footboard 21. That is, the water supply portion (the water supply pipe 54 and the cap 55) of the reservoir tank 11 is covered from above by the lid 36 so as not to appear in the appearance of the vehicle body.

Further, as shown in FIGS. 3 and 4, a breather pipe 56 is connected to the upper end of the reservoir tank 11 and in the vicinity of the front of the water supply pipe 54, and the lower end of the reservoir tank 11 is connected to the rear of the vehicle body. The other end of the reservoir pipe 10 whose one end is connected to the radiator 9 is connected to the end on the side.
As shown in FIGS. 3 and 4, the other end of the breather pipe 56 is held by being inserted into a pipe holder 57 of the under cover 22. The pipe holder 57 is disposed in front of the vehicle body from the reservoir tank 11 and is formed to hold the breather pipe 56 inside a hole that penetrates the bottom wall 27 of the under cover 22.

As shown in FIG. 7, a concave groove 60 for holding the main harness 59 is formed in the inner wall 58 inside the vehicle body of the reservoir tank 11, and the outer wall 61 outside the vehicle body is shown in FIGS. Thus, a level gauge 62 is formed. The concave groove 60 is formed to have a semicircular cross section so that the main harness 59 can be fitted therein.
The level gauge 62 has the maximum water level and the position of the water surface when the amount of cooling water stored in the reservoir tank 11 is at a minimum allowable level. It shows the position of the water surface in a state of being formed, and is formed at the time of molding using a mold for molding the reservoir tank 11. As shown in FIG. 8, an opening 64 for visually confirming the amount of stored water is formed in the side wall 63 of the under cover 22 that faces the level gauge 62. The reservoir tank 11 according to this embodiment is formed of a synthetic resin material that allows the water surface of the cooling water to be seen through, and the level gauge 62 and the water surface can be compared through the opening 64.

In the scooter 1 configured as described above, the cooling water is supplied to the reservoir tank 11 with the lid 36 removed from the footboard 21 and the cap 55 removed from the water supply pipe 54 of the reservoir tank 11. . If a portion of the cooling water is spilled while replenishing the cooling water, the cooling water passes through the gap d (see FIG. 7) between the through hole 34a and the water supply pipe 54 from the inside of the tray 34. It drains down through. At this time, the cooling water spilled into the tray 34 is prevented from flowing to the battery box 33 side by the partition wall 35, so that the battery 32 stored in the battery box 33 is not wetted by the cooling water.
After replenishing the cooling water, the lid 36 is attached to the footboard 21 so that the battery box 33 and the tray 34 are not covered with the lid 36 and appear in the appearance of the vehicle body.

  Therefore, in the scooter 1 configured in this way, the water supply portion (the water supply pipe 54 and the cap 55) of the reservoir tank 11 can be covered by using the lid 36 that closes the opening portion of the battery box 33, and therefore exclusively. Compared to the case where a lid that covers the water supply portion of the reservoir tank is provided, the number of parts and the number of assembly steps can be reduced, and the cost can be reduced.

  Further, in the scooter 1 according to this embodiment, since the upper half 43 of the rear wall 41 of the battery box 33 is detachably attached to the lower half 42, by removing the upper half 43, A maintenance space S formed in front of the cylinder head 46 of the engine 6 is opened forward. For this reason, a work space for performing maintenance of the cylinder head 46 such as tappet adjustment can be widened, so that workability can be improved. In this embodiment, an example is shown in which only the upper half 43 of the rear wall 41 of the battery box 33 is detachable. However, the entire rear wall 41 is detachably formed on the battery box 33. Has the same effect.

1 is a side view of a scooter type motorcycle according to the present invention. It is a top view which expands and shows a footrest. It is a side view which expands and shows a reservoir tank mounting part. It is a top view which expands and shows a reservoir tank mounting part. It is a top view which expands and shows a principal part. FIG. 6 is a cross-sectional view of the foot board in FIG. 5 taken along the line VI-VI. It is the VII-VII sectional view taken on the line in FIG. It is a side view which shows the opening for water storage amount visual recognition.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Scooter type motorcycle, 2 ... Front wheel, 3 ... Rear wheel, 6 ... Engine, 11 ... Reservoir tank, 21 ... Footboard, 33 ... Battery box, 34 ... Tray, 35 ... Bulkhead, 36 ... Lid, 41 ... Rear Wall, 42 ... lower half, 43 ... upper half, 46 ... cylinder head, 54 ... pipe for water supply, 55 ... cap.

Claims (2)

  In a scooter type motorcycle provided with a battery box that opens upward on a footboard located between a front wheel and a rear wheel, and having a lid that closes an opening of the battery box, the footboard A partition that forms a recess facing the water supply portion of the reservoir tank on the side of the battery box, and that forms the lid so as to close the recess and the battery box, thereby defining the recess and the battery box A scooter type motorcycle characterized in that the footboard is provided. In a scooter type motorcycle in which a battery box that opens upward is provided on a footboard located between a front wheel and a rear wheel, and an engine cylinder is disposed behind the battery box, the rear of the battery box A scooter type motorcycle characterized in that at least an upper part of a wall is formed to be detachable from other parts.

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