Patent Description:
A conventional straddled vehicles includes a waterproof structure for waterproofing an electrical component. For example, the waterproof structure for a motorcycle, which is disclosed in <CIT>, includes a waterproof container and a lower cover. The waterproof container covers the top, front, the rear, and the sides of the electrical component. Side walls of the waterproof container surrounds the sides of the electrical component. The lower cover covers a lower opening portion of the waterproof container. Side walls of the lower cover surrounds the sides of the watertight container. <CIT> discloses a battery cooling structure for an electric motor vehicle in which a battery module formed by connecting plural cylindrical batteries which is disposed in a battery box, a passage is formed so that cooling air introduced into the battery box flows in the periphery of the side parts of the battery module. <CIT>, which discloses the preamble of claim <NUM>, describes a small motorcycle with a footrest as a lower position in front of the seat. The footrest has a through hole with an electrical box and cover covering the through hole. The through hole has a surrounding groove along the periphery of the side wall of the through hole. <CIT> discloses also that the surrounding groove receives a peripheral wall of the cover. The front side of the surrounding groove has locking holes which receive lugs of the peripheral wall of the front side of the cover. <CIT> relates to a battery mounting structure for an electric two-wheeled vehicle. A battery case that includes a bottomed box-shaped case body and a lid. The lid covers an upper opening of the case body. The case body, an outer wall of the groove and connecting portion are the parts of the lower cover. The upper cover has the lid and a wall of fitting part. The fitting part fit together with the groove to prevent water from entering the case body. <CIT> relates to a battery box mounting structure for disposing a battery box below a storage box in a scooter type motorcycle. <CIT> discloses an upper cover with a lid portion as well as surrounding wall portion. Moreover, a lower cover with a battery box, wall portion and connecting portion. The surrounding wall portion surrounds the wall portion, so that the battery box has a labyrinth shape around its periphery. <CIT> discloses a case which has a first case and a second case. The first case has inner walls and the second case has connecting grooves. When the first case and the second case are connected together, the inner walls are inserted into the connecting grooves. When the first case and the second case are connected, an interval exists between the inner walls and the connecting grooves.

In the conventional waterproof structure described above, if water enters between the side wall of the waterproof container and the side wall of the lower cover, the electrical component may get wet. Specifically, in a state where the water enters between the side wall of the waterproof container and the side wall of the lower cover, when the motorcycle is running or the motorcycle receives vibration at a rest state of the motorcycle, a water dynamic pressure acts on the water. The dynamic pressure may cause the water between the sidewalls of the waterproof container and the sidewalls of the lower cover to enter an internal space of the waterproof container. Thus, the electrical component, which is disposed in the waterproof container, may get wet in the conventional waterproof structure.

It is the object of the present invention to provide a straddled vehicle comprising a combination of a waterproof structure for a straddled vehicle and an electrical component that can suitably waterproof an electrical component of the straddled vehicle. According to the present invention said object is solved by a straddled vehicle comprising the features of independent claim <NUM>. Preferred embodiments are laid down in the dependent claims.

A waterproof structure for a straddled vehicle according to one aspect is a waterproof structure for a straddled vehicle which mounts an electrical component. The waterproof structure for the straddled vehicle includes a lower cover and an upper cover. The lower cover includes an electrical component housing, a first wall portion, and a connecting portion. The electrical component housing covers the front, the rear, the sides and the bottom of the electrical component. The first wall portion surrounds the front, the rear and the sides of the electrical component housing. The connecting portion connects a lower end of the first wall portion and the electrical component housing.

The upper cover includes a lid portion and a second wall portion. The lid portion covers an upper opening end of the electrical component housing. The second wall portion extends from the lid portion toward the connecting portion. The second wall portion covers the front, the rear and the sides of the electrical component housing. The second wall portion is disposed at intervals from the electrical component housing and the first wall portion between the electrical component housing and the first wall portion. A gap is formed between a tip of the second wall portion and the connecting portion.

In the waterproof structure for the straddled vehicle according to this aspect, the second wall portion of the upper cover is disposed between the electrical component housing of the lower cover and the first wall portion of the lower cover. The second wall portion of the upper cover is disposed at an interval from the electrical component housing of the lower cover. The second wall of the upper cover is disposed at an interval from the first wall portion of the lower cover.

In this configuration, a space is formed not only between the second wall portion of the upper cover and the first wall portion of the lower cover, but also between the second wall portion of the upper cover and the electrical component housing of the lower cover. In other words, a labyrinth structure is formed by the space between the second wall portion of the upper cover and the first wall portion of the lower cover, the space between the second wall portion of the upper cover and the electrical component housing of the lower cover and the gap between the tip of the second wall portion and the connecting portion.

Therefore, even if water enters the space between the second wall portion of the upper cover and the first wall portion of the lower cover, the intrusion of water into an internal space of the electrical component housing is prevented by the space between the second wall portion of the upper cover and the electrical component housing of the lower cover. Thus, the waterproof structure of the straddled vehicle can suitably waterproof the electrical component of the straddled vehicle in comparison with the conventional technology.

The tip of the second wall portion can be disposed on an upper side of a position which is defined at half of height of the electrical component with respect to a bottom surface of the electrical component housing. Thereby, the upper cover can be easily attached to and detached from the lower cover.

The upper opening end of the electrical component housing can be disposed on an upper side of a position which is defined at half of height of the electrical component with respect to a bottom surface of the electrical component housing. Thereby, the electrical component can be suitably waterproofed.

The upper opening end of the electrical component housing can be disposed on an upper side of an upper surface of the electrical component. Thereby, the electrical component can be more suitably waterproofed.

The straddled vehicle can includes a center axis extending in a front-rear direction of the straddled vehicle in a vehicle upper view. The electrical component can include a connection terminal to which a transmission line is connected. The connecting portion can include a hole portion through which the transmission line passes. In this case, the hole portion is disposed on one of a left side and a right side with respect to the center axis. The connection terminal is disposed on the other of the left side and the right side.

For example, when the straddled vehicle is held by a stand thereof, a posture of the straddled vehicle changes from an upright state to an inclined state. In this case, the hole portion and the connection terminal are respectively provided on the connecting portion and the electrical component so that a height position of the hole portion moves upward and a height position of the connection terminal moves downward. Thereby, adhesion of water to the connection terminal can be suitably prevented. As a result, occurrence of rust on the connection terminal can be suppressed and contact failure of the connection terminal can be suitably prevented.

The connecting portion of the lower cover can include a drain hole. Thereby, even if water enters the connecting portion, the water can be discharged through the drain hole.

The electrical component can include a battery. In this case, the battery can be suitably waterproofed by the above configuration.

A straddled vehicle according to one aspect includes the above waterproof structure. Since the straddled vehicle according to this aspect includes the above waterproof structure, the electrical component can be suitably waterproofed in comparison with the conventional technology.

The straddled vehicle includes a seat and a footboard disposed in front of the seat and below the seat. In this case, the waterproof structure is disposed below the footboard. With this configuration, the electrical components can be suitably waterproofed when the waterproof structure is disposed below the footboard.

According to the present invention, a waterproof structure for a straddled vehicle can suitably waterproof an electrical component of the straddled vehicle.

A straddled vehicle <NUM> according to an embodiment will be described below with reference to the drawings. <FIG> is a side view of a straddled vehicle <NUM>. In this embodiment, the straddled vehicle <NUM> is a scooter. As shown in <FIG>, the straddled vehicle <NUM> includes a vehicle body frame <NUM>, a steering device <NUM>, a front wheel <NUM>, a seat <NUM>, a power unit <NUM>, a rear wheel <NUM> and a vehicle body cover <NUM>. The straddled vehicle <NUM> further includes an electrical component <NUM> and a waterproof structure <NUM> for waterproofing the electrical component <NUM>.

In the following description, the front, rear, left, and right directions corresponds to directions in which the driver views in a state where the driver is seated on the seat <NUM>. For example, as shown in <FIG>, a center axis X1 is defined on the straddled vehicle in a vehicle upper view when the straddled vehicle <NUM> is viewed from above. A direction, in which the center axis X1 extends in the vehicle upper view, is a front-rear direction. A direction, which is orthogonal to the center axis X1 in the vehicle upper view, is a left-right direction. The left-right direction is wording corresponding to a side direction. A direction, which is orthogonal to the front-rear direction and the left-right direction is an up-down direction.

As shown in <FIG>, the vehicle body frame <NUM> includes a head pipe <NUM>, a down frame <NUM>, a pair of lower frames <NUM>, and a seat frame <NUM>. The head pipe <NUM> is disposed in a center of the straddled vehicle <NUM> in the left-right direction. For example, the head pipe <NUM> is disposed on the center axis X1 shown in <FIG>. The head pipe <NUM> extends forward and downward.

The down frame <NUM> extends downward from head pipe <NUM>. The pair of lower frames <NUM> extend rearward from a lower portion of the down frame <NUM>. The pair of lower frames <NUM> are disposed at an interval from each other in the left-right direction. The seat frame <NUM> extends rearward and upward from a rear portion of the lower frames <NUM>.

The steering device <NUM> is rotatably supported by the head pipe <NUM>. The steering device <NUM> rotatably supports the front wheel <NUM>. The steering device <NUM> includes front forks <NUM> and a handle member <NUM>. The front forks <NUM> are rotatably supported by the head pipe <NUM>. The front wheel <NUM> is rotatably supported by the front forks <NUM>. The handle member <NUM> is connected to the front forks <NUM>.

The seat <NUM> is disposed behind the head pipe <NUM>. The seat <NUM> is disposed above the seat frame <NUM>. The seat <NUM> is supported by the seat frame <NUM> via stays (not shown). A front portion of the seat <NUM> is pivotably supported by a shaft <NUM> extending in the left-right direction. The rear portion of the seat <NUM> moves in the up-down direction by pivoting the seat <NUM> around the shaft <NUM>.

The power unit <NUM> is disposed below the seat <NUM>. The power unit <NUM> includes an engine. Power unit <NUM> can include an electric motor. The rear wheel <NUM> is rotatably supported by the power unit <NUM>.

The vehicle body cover <NUM> includes a front cover <NUM>, a leg shield <NUM>, a footboard <NUM>, and a rear cover <NUM>. The front cover <NUM> and the leg shield <NUM> are disposed at a front portion of the straddled vehicle <NUM>. The front cover <NUM> is disposed in front of the head pipe <NUM> and the down frame <NUM>. The leg shield <NUM> is disposed behind the head pipe <NUM> and the down frame <NUM>.

The rear cover <NUM> is disposed at the rear portion of the straddled vehicle <NUM>. The rear cover <NUM> is disposed below the seat <NUM>. The rear cover <NUM> is disposed above the power unit <NUM> and the rear wheel <NUM>. The rear cover <NUM> includes a left side cover 24a and a right side cover 24b (see <FIG>). The left side cover 24a and the right side cover 24b are respectively disposed at side portions of the straddled vehicle <NUM>.

As shown in <FIG>, footboard <NUM> is positioned between leg shield <NUM> and rear cover <NUM>. The footboard <NUM> extends rearward from a lower end of leg shield <NUM>. The footboard <NUM> is disposed in front of the seat <NUM> and below the seat <NUM>. As shown in <FIG>, the footboard <NUM> includes a footrest portion <NUM> and a maintenance cover <NUM>. The footrest portion <NUM> is used as a driver's footrest.

As shown in <FIG>, the maintenance cover <NUM> covers the waterproof structure <NUM>. The maintenance cover <NUM> is detachably mounted to the footrest portion <NUM>. The maintenance cover <NUM> is used as a driver's footrest in a state where the maintenance cover <NUM> is mounted to the footrest portion <NUM>. The driver can access the waterproof structure <NUM> in a state where the maintenance cover <NUM> removed from the footrest portion <NUM>.

The maintenance cover <NUM> may be interpreted as a member that configures the waterproof structure <NUM>. In this case, the waterproof structure <NUM> to be described later includes the maintenance cover <NUM>.

As shown in <FIG>, the electrical component <NUM> is mounted on the straddled vehicle <NUM>. As shown in <FIG>, the electrical component <NUM> is disposed below the footboard <NUM>. For example, the electrical component <NUM> is disposed below the maintenance cover <NUM>. Specifically, the electrical component <NUM> is disposed below the maintenance cover <NUM> in a state where the electrical component <NUM> is waterproofed by the waterproof structure <NUM>.

The electrical component <NUM> includes a battery. An example, in which the electrical component <NUM> is a battery, is shown in this embodiment. The electrical component <NUM> can be a electrically functional component which is different from the battery as long as the electrical component <NUM> functions with electricity. The electrical component <NUM> can include both the battery and the electrically functional component.

As shown in <FIG>, the electrical component <NUM> includes at least one connection terminal <NUM> to which the transmission line <NUM> is connected. In this embodiment, the electrical component <NUM> includes a battery body <NUM> and two connection terminals <NUM>. The two connection terminals <NUM> are provided on an upper surface 33a of the battery body <NUM>.

The two connection terminals <NUM> are disposed on one of a left side and a right side with respect to the center axis X1. In this embodiment, the two connection terminals <NUM> are disposed on the left side. The two transmission lines <NUM> are respectively connected to the two connection terminals <NUM>. The two connection terminals <NUM> include a plus terminal 34a and a minus terminal 34b.

As shown in <FIG>, the waterproof structure <NUM> is disposed below the footboard <NUM>. The waterproof structure <NUM> is disposed between the pair of lower frames <NUM>. The waterproof structure <NUM> is provided on the footrest portion <NUM>.

As shown in <FIG>, the waterproof structure <NUM> includes a lower cover <NUM> and an upper cover <NUM>. The lower cover <NUM> is disposed below the maintenance cover <NUM>. The lower cover <NUM> is formed integrally with the footrest portion <NUM>. The lower cover <NUM> can be formed separately from the footrest portion <NUM> and can be mounted to the footrest portion <NUM>. The lower cover <NUM> includes an electrical component housing <NUM>, a first surrounding wall portion <NUM> (an example of a first wall portion), and a connecting portion <NUM>. As shown in <FIG>, the lower cover <NUM> further includes a cover mounting portion <NUM>.

As shown in <FIG>, the electrical component housing <NUM> houses the electrical component <NUM>. As shown in <FIG>, the electrical component housing <NUM> covers the front, the rear, the sides, and the bottom of the electrical component <NUM>. The electrical component housing <NUM> includes a first front wall 37a, a first rear wall 37b, a first left wall 37c, a first right wall 37d, and a bottom portion 37e. The first front wall 37a covers the front of the electrical component <NUM>. The first rear wall 37b covers the rear of the electrical component <NUM>. The first left wall 37c covers the left side of the electrical component <NUM>. The first right wall 37d covers the right side of the electrical component <NUM>.

As shown in <FIG> and <FIG>, the bottom portion 37e covers the bottom of the electrical component <NUM>. The bottom portion 37e is connected to a lower end of the first front wall 37a, a lower end of the first rear wall 37b, a lower end of the first left wall 37c, and a lower end of the first right wall 37d. The first front wall 37a, the first rear wall 37b, the first left wall 37c, the first right wall 37d, and the bottom portion 37e are integrally formed with each other.

As shown in <FIG>, the first front wall 37a, the first rear wall 37b, the first left wall 37c, and the first right wall 37d form an outer wall of the electrical component housing <NUM>. The outer walls 37a, 37b, 37c, 37d of the electrical component housing <NUM> surround the electrical component <NUM>.

As shown in <FIG> and <FIG>, the bottom portion 37e forms the bottom portion of the electrical component housing <NUM>. An upper end of the first front wall 37a, an upper end of the first rear wall 37b, an upper end of the first left wall 37c, and an upper end of the first right wall 37d form an upper opening end 37f of the electrical component housing <NUM>.

Preferably, as shown in <FIG> and <FIG>, the upper opening end 37f of the electrical component housing <NUM> is disposed on an upper side of a position which is defined at half of height H1 of the electrical component <NUM> with respect to a bottom surface <NUM> of the electrical component housing <NUM>. More preferably, the upper opening end 37f of the electrical component housing <NUM> is disposed on an upper side of a position which is defined at <NUM>/<NUM> of the height H1 of the electrical component <NUM> with respect to the bottom surface <NUM> of the electrical component housing <NUM>.

In the present embodiment, as shown in <FIG>, the upper opening end 37f of the electrical component housing <NUM> is disposed above the upper surface 33a of the battery body <NUM>. The height H1 of electrical component <NUM> is defined by a maximum height of the electrical component <NUM>. When the electrical component <NUM> includes multiple components, the height H1 of the electrical component <NUM> is defined by height of the tallest component among the multiple components.

When the height H1 of the electrical component <NUM> is defined, the connection terminals <NUM> are preferably excluded. For example, if the electrical component <NUM> is the battery, the height H1 of the electrical component <NUM> is preferably defined by a lower surface 33b of the battery body <NUM> and the upper surface 33a of the battery body <NUM>.

As shown in <FIG>, the first surrounding wall portion <NUM> is formed integrally with the footrest portion <NUM>. As shown in <FIG>, the first surrounding wall portion <NUM> surrounds the front, the rear, the left side, and the right side of the electrical component housing <NUM>. For example, the first surrounding wall portion <NUM> surrounds the outer walls 37a, 37b, 37c, 37d of the electrical component housing <NUM>. The first surrounding wall portion <NUM> includes a second front wall 38a, a second rear wall 38b, a second left wall 38c, and a second right wall 38d.

The second front wall 38a is disposed in front of the electrical component housing <NUM>. For example, the second front wall 38a is disposed at an interval from the first front wall 37a of the electrical component housing <NUM> in front of the electrical component housing <NUM>. The second rear wall 38b is disposed behind the electrical component housing <NUM>. For example, the second rear wall 38b is disposed at an interval from the first rear wall 37b of the electrical component housing <NUM> behind the electrical component housing <NUM>.

The second left wall 38c is disposed on the left side of the electrical component housing <NUM>. For example, the second left wall 38c is disposed at an interval from the first left wall 37c of the electrical component housing <NUM> on the left side of the electrical component housing <NUM>. The second right wall 38d is disposed on the right side of the electrical component housing <NUM>. For example, the second right wall 38d is disposed at an interval from the first right wall 37d of the electrical component housing <NUM> on the right side of the electrical component housing <NUM>.

As shown in <FIG> and <FIG>, the connecting portion <NUM> connects a lower end of the first surrounding wall portion <NUM> and the electrical component housing <NUM>. For example, the connecting portion <NUM> is integrally formed with the lower end of the first surrounding wall portion <NUM> and the outer walls 37a, 37b, 37c, 37d of the electrical component housing <NUM>. The connecting portion <NUM> extends from the lower end of the first surrounding wall portion <NUM> toward the outer walls 37a, 37b, 37c, 37d of the electrical component housing <NUM>, and is connected to the outer walls 37a, 37b, 37c, 37d of the electrical component housing <NUM>. A groove portion <NUM> is formed around the electrical component <NUM> by the outer walls 37a, 37b, 37c, 37d of the electrical component housing <NUM>, the first surrounding wall portion <NUM> and the connecting portion <NUM>.

As shown in <FIG>, the connecting portion <NUM> is disposed above a lower surface <NUM> (an outer surface) of the bottom portion 37e of the electrical component housing <NUM>. For example, the connecting portion <NUM> is disposed above the bottom surface <NUM> of the electrical component housing <NUM>. Preferably, the connecting portion <NUM> is disposed on an upper side of a position which is defined at <NUM>/<NUM> of the height H1 of the electrical component <NUM> with respect to the bottom surface <NUM> of the electrical component housing <NUM>. In this embodiment, the connecting portion <NUM> is disposed on a position which is defined at half of the height H1 of the electrical component <NUM> with respect to the bottom surface <NUM> of the electrical component housing <NUM>. The arrangement position of the connecting portion <NUM> is defined by the upper surface of the connecting portion <NUM>.

As shown in <FIG>, the connecting portion <NUM> includes a wiring hole 39a (an example of a hole portion) and a drain hole 39b. The transmission line <NUM> is inserted through the wiring hole 39a. The wiring hole 39a penetrates the connecting portion <NUM>. In other words, the wiring hole 39a penetrates the bottom portion 37e of the groove portion <NUM>. The wiring hole 39a is disposed on the other of the left side and the right side with respect to the center axis X1. In this embodiment, the wiring hole 39a is disposed on the right side.

The drain hole 39b drains water which entered the groove portion <NUM>. The drain hole 39b penetrates the bottom portion 37e of the groove portion <NUM>. In other words, the drain hole 39b penetrates the connecting portion <NUM>. In this embodiment, the drain hole 39b is disposed on the left side with respect to the center axis X1.

As shown in <FIG>, the upper cover <NUM> is mounted to the cover mounting portion <NUM>. The cover mounting portion <NUM> is provided between the first surrounding wall portion <NUM> and the footrest portion <NUM>. For example, the cover mounting portion <NUM> is provided at a portion <NUM> which connects an upper end of the first surrounding wall portion <NUM> and the footrest portion <NUM>. The portion <NUM> which connects the upper end of the first surrounding wall portion <NUM> and the footrest portion <NUM> can be interpreted as being included in the first surrounding wall portion <NUM>.

As shown in <FIG> and <FIG>, the upper cover <NUM> is disposed below the maintenance cover <NUM>. For example, the upper cover <NUM> is disposed between the maintenance cover <NUM> and the lower cover <NUM>. The upper cover <NUM> includes a lid portion <NUM> and a second surrounding wall portion <NUM> (an example of a second wall portion). As shown in <FIG>, the upper cover <NUM> further includes mounting arms <NUM>.

As shown in <FIG> and <FIG>, the lid portion <NUM> covers the upper opening end 37f of the electrical component housing <NUM>. The lid portion <NUM> is disposed between the maintenance cover <NUM> and the upper opening end 37f of the electrical component housing <NUM>. The lid portion <NUM> is disposed at an interval from the upper opening end 37f of the electrical component housing <NUM>.

The second surrounding wall portion <NUM> covers the front, the rear, the left, and the right of the electrical component housing <NUM>. The second surrounding wall portion <NUM> is integrally formed with the lid portion <NUM>. The second surrounding wall portion <NUM> extends from the lid portion <NUM> toward the connecting portion <NUM>. A gap G is formed between a tip 43a of the second surrounding wall portion <NUM> and the connecting portion <NUM>.

The second surrounding wall portion <NUM> overlaps the outer walls 37a, 37b, 37c, 37d of the electrical component housing <NUM> in a vehicle front view, a vehicle rear view, and a vehicle side view of the straddled vehicle <NUM>. For example, the tip 43a of the second surrounding wall portion <NUM> is disposed below the upper opening end 37f of the electrical component housing <NUM>. The tip 43a of the second surrounding wall portion <NUM> is disposed above the connecting portion <NUM>.

The tip 43a of the second surrounding wall portion <NUM> is disposed above the bottom surface <NUM> of the electrical component housing <NUM>. Preferably, the tip 43a of the second surrounding wall portion <NUM> is disposed on an upper side of a position which is defined at half of the height H1 of the electrical component <NUM> with respect to the bottom surface <NUM> of the electrical component housing <NUM>.

As shown in <FIG>, <FIG>, and <FIG>, the second surrounding wall portion <NUM> is disposed between the electrical component housing <NUM> and the first surrounding wall portion <NUM>. For example, the second surrounding wall portion <NUM> is disposed between the outer walls 37a, 37b, 37c, 37d of the electrical component housing <NUM> and the first surrounding wall portion <NUM>.

Specifically, the second surrounding wall portion <NUM> is disposed at an interval from the outer walls 37a, 37b, 37c, 37d of the electrical component housing <NUM>. As shown in FIG. The second surrounding wall portion <NUM> is disposed at an interval from the first surrounding wall portion <NUM>.

More specifically, the second surrounding wall portion <NUM> is disposed at an interval from the outer walls 37a, 37b, 37c, 37d of the electrical component housing <NUM>, the first surrounding wall portion <NUM>, and the connecting portion <NUM>, in a state where the second surrounding wall portion <NUM> is disposed in the above groove portion <NUM>.

In other words, a labyrinth structure <NUM>, <NUM> is formed by the second surrounding wall portion <NUM> and the groove portion <NUM> (the outer walls 37a, 37b, 37c, 37d of the electrical component housing <NUM>, the first surrounding wall portion <NUM>, and the connecting portion <NUM>). The labyrinth structure <NUM>, <NUM> prevents water which enters the groove portion <NUM> from entering an internal space of the electrical component housing <NUM>.

As shown in <FIG>, the mounting arm <NUM> is provided on the lid portion <NUM>. For example, the mounting arm <NUM> is integrally formed with the lid portion <NUM>. The mounting arm <NUM> can be formed separately from the lid portion <NUM> and can be mounted to the lid portion <NUM>. The mounting arm <NUM> is detachably mounted to the cover mounting portion <NUM>.

An air layer is formed in an internal space of the upper cover <NUM> in a state where the mounting arm <NUM> is mounted on the cover mounting portion <NUM>. This air layer prevents water which enters the groove portion <NUM> from entering the internal space of the electrical component housing <NUM>.

In the straddled vehicle <NUM> according to this embodiment, the first surrounding wall portion <NUM> of the lower cover <NUM> and the second surrounding wall portion <NUM> of the upper cover <NUM> are disposed at intervals from each other. The second surrounding wall portion <NUM> of the upper cover <NUM> and the outer walls 37a, 37b, 37c, 37d of the electrical component housing <NUM> of the lower cover <NUM> are disposed at intervals from each other. The gap G is formed between the tip 43a of the second surrounding wall portion <NUM> and the connecting portion <NUM>.

In other words, the labyrinth structure <NUM>, <NUM> is formed by the space between the first surrounding wall portion <NUM> of the lower cover <NUM> and the second surrounding wall portion <NUM> of the upper cover <NUM>, the space between the second surrounding wall portion <NUM> of the upper cover <NUM> and the outer walls 37a, 37b, 37c, 37d of the electrical component housing <NUM> of the lower cover <NUM>, and the gap G between the tip 43a of the second surrounding wall portion <NUM> and the connecting portion <NUM>.

Thereby, even if water enters the space between the first surrounding wall portion <NUM> of the lower cover <NUM> and the second surrounding wall portion <NUM> of the upper cover <NUM>, the intrusion of water into the internal space of the electrical component housing <NUM> is reliably prevented by the labyrinth structure <NUM>, <NUM> and the air layer provided inside the upper cover <NUM>. Thus, the waterproof structure <NUM> of the straddled vehicle <NUM> can suitably waterproof the electrical component <NUM> of the straddled vehicle <NUM> in comparison with the conventional technology.

The straddled vehicle <NUM> is not limited to a scooter and may be another type of straddled vehicle such as a moped.

The waterproof structure <NUM> is not limited to configuration of the above embodiment and can be modified. For example, the position of the tip 43a of the second surrounding wall portion <NUM> in the up-down direction and/or the position of the connecting portion <NUM> in the up-down direction can be changed within a range that satisfies configuration of the above embodiment.

Claim 1:
A straddled vehicle (<NUM>) comprising a waterproof structure (<NUM>) and an electrical component (<NUM>) mounted in said structure, wherein
the straddled vehicle (<NUM>) includes a center axis (X1) extending in a front-rear direction of the straddled vehicle (<NUM>) in a vehicle upper view;
the electrical component (<NUM>) includes a connection terminal (<NUM>) to which a transmission line (<NUM>) is connected;
the waterproof structure (<NUM>) includes a hole portion (39a) through which the transmission line (<NUM>) passes;
the hole portion (39a) is disposed on one of a left side and a right side with respect to the center axis (X1); and
wherein the waterproof structure (<NUM>) further comprises:
a lower cover (<NUM>) including an electrical component housing (<NUM>) covering the front, the rear, the sides and the bottom of the electrical component (<NUM>), a first surrounding wall portion (<NUM>) surrounding the front, the rear and the sides of the electrical component housing (<NUM>), and a connecting portion (<NUM>) connecting a lower end of the first surrounding wall portion (<NUM>) and the electrical component housing (<NUM>); and
an upper cover (<NUM>) including a lid portion (<NUM>) covering an upper opening end (37f) of the electrical component housing (<NUM>) and a second surrounding wall portion (<NUM>) extending from the lid portion (<NUM>) toward the connecting portion (<NUM>) and covering the front, the rear and the sides of the electrical component housing (<NUM>);
the second surrounding wall portion (<NUM>) is disposed at intervals from the electrical component housing (<NUM>) and the first surrounding wall portion (<NUM>) between the electrical component housing (<NUM>) and the first surrounding wall portion (<NUM>); and
a gap (G) is formed between a tip (43a) of the second surrounding wall portion (<NUM>) and the connecting portion (<NUM>), wherein
the connecting portion (<NUM>) of the lower cover (<NUM>) includes a drain hole (39b), characterized in that
the connecting portion (<NUM>) includes the hole portion (39a), and
the connection terminal (<NUM>) is disposed on the other of the left side and the right side.