CN105191035A - Electrical connection box - Google Patents

Abstract

An object of the present invention is to provide an electrical junction box having a novel structure including a drainage structure so that an effective drainage effect can be obtained even in a vehicle in which the vehicle body itself is inclined left and right with respect to a ground contact surface. The electrical connection box (10) is mounted to a vehicle, and includes a box main body (12) on which electrical components (24, 26) are mounted, and a lower cover (16) covering a lower opening of the box main body (12). ), and the electrical connection box (10) is configured such that: the bottom wall (66) of the lower cover (16) has an inclined surface (68), which slopes downward from one upper end toward the other lower end, and , drain holes (70) are provided in both end portions in the inclined direction of the inclined surface (68).

Description

Electrical connection box

technical field

The present invention relates to an electrical connection box capable of being installed in a vehicle, and more particularly, the present invention relates to an electrical connection box including a drainage structure.

Background technique

Generally, an electrical connection box installed in a vehicle is configured to include a box main body on which electrical components such as relays, fuses, wires, etc. are mounted, and an upper cover and a lower cover to cover Upper and lower openings, the upper and lower covers prevent the tank main body from being directly exposed to water.

In addition, there are cases where water adhering to the surface of the electrical connection box enters the inside of the electrical connection box through the installation gap between the box main body and the upper and lower covers. In order to solve this problem, as disclosed in JPH9-308053A (Patent Document 1), for example, an electrical connection box has been proposed, which includes a drainage structure, wherein the drainage hole is provided in the bottom wall of the lower cover, and the bottom wall is provided with a direction toward the drainage hole. A sloping surface that slopes downward, water that enters the interior of the electrical junction box flows down to the drain hole and drains through it.

However, the drainage structure disclosed in Patent Document 1 initially assumes that, in the case of a four-wheeled vehicle, the vehicle body itself does not incline with respect to the support surface. Currently, for a vehicle such as a two-wheeled automobile, there is no specific measure against a situation where, for example, the vehicle body moves forward or stops while being tilted leftward or rightward with respect to a support surface.

Therefore, if a structure such as simply providing an inclined surface inclined downward toward the drain hole is adopted, there is a possibility that a vehicle such as a motorcycle, whose body itself is frequently inclined left and right with respect to the support surface, cannot achieve the desired effect. Risk of vehicle drainage effects.

prior art literature

patent documents

Patent Document 1: JPH9-308053A

Contents of the invention

technical problem

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an electrical connection box having a novel structure including such a drainage structure that even when the vehicle body itself may be left and right with respect to the supporting surface An effective drainage effect can also be achieved in a tilted vehicle.

solution

A first aspect of the present invention is an electrical junction box mountable in a vehicle, the electrical junction box including a box main body to which electrical components are mounted; and a lower cover covering the box main body The lower opening of the lower cover, wherein the bottom wall of the lower cover has an inclined surface, the inclined surface is inclined downward from the upper end of one side toward the lower end of the other side, and in the inclined direction of the inclined surface Drain holes are provided in the opposite end portions.

With the electrical connection box having the structure according to the present invention, the bottom wall of the lower cover is provided with an inclined surface which is inclined downward from the upper end toward the lower end on the other side, and drain holes are provided on opposite sides of the inclined surface. end. Therefore, in a non-inclined state where the vehicle body is not inclined with respect to the support surface, the water that has reached the bottom wall of the lower cover flows downward along the inclined surface inclined downward, and is collected to the lower end portion on the other side at the lowest end. , so that the water quickly exits through the drain hole provided in the lower end of the other side.

In addition, in the case where the vehicle body may be inclined relative to the support surface, when the vehicle body is inclined toward the lower end side on the other side, which is located at the lowest end of the downwardly inclined surface, the inclination toward the lower end portion on the other side is inclined. The slope of the surface becomes steeper, thus more advantageously achieving a water collection towards the weep holes. Furthermore, in the case where the vehicle body may be inclined relative to the supporting surface, when the vehicle body is inclined toward the upper end side on one side, which is located at the uppermost end of the downwardly inclined surface, the inclined surface is directed downward toward the upper end portion of the side. Inclined so that water flows down along the inclined surface and is collected to the upper end of the one side so that the water can be quickly drained through the drain hole provided in the upper end of the one side.

In short, in the conventional structure, since the drain hole is provided only in the lower end portion on the other side of the inclined surface, there is a risk that when the vehicle body is in the direction opposite to the direction of downward inclination of the inclined surface When inclined, the water collected in the upper end portion on the inclined surface side cannot be drained and may reach the tank main body side. However, according to the technical solution of the present aspect, since the drain hole is also provided at the upper end portion of the side, even when the vehicle body is inclined in the direction opposite to the downward inclination direction of the inclined surface, water can pass through the drain. The hole drains quickly.

It should be noted that even in the case of a four-wheeled vehicle in which the vehicle body is not inclined with respect to the supporting surface, it is assumed that depending on the inclined state of the road surface, the upper end on one side of the inclined surface may be located at a lower end than the other side in the vertical direction. at a lower level. However, even in such a case, water can be quickly drained through the drain hole in the upper end portion of the one side.

A second aspect of the present invention is the electrical junction box according to the first aspect, wherein the vehicle is of a type that is parked in a state where the vehicle is tilted so that one side thereof in the left-right direction is lowered, and The electrical junction box is installed in the vehicle such that the lower end portion is located on the side that is lowered when the vehicle is parked.

According to the technical solution of the present aspect, in the case where a motorcycle or the like is parked on a side stand and the vehicle itself is tilted so that one side in the left-right direction is lowered, the electrical connection box is installed in the vehicle so that The lower end portion is located on the side that is at a lower position when the vehicle is parked. Therefore, when the vehicle is parked, the slope of the inclined surface of the bottom wall of the lower cover becomes steeper, so that the effect of collecting water toward the drain hole and the effect of draining water through the drain hole can be more favorably obtained.

A third aspect of the present invention is the electrical junction box according to the first aspect, wherein the vehicle is of a type that is parked in a state where the vehicle is tilted such that one side thereof in the left-right direction is lowered, and , the electrical junction box is installed in the vehicle such that the upper end is located on the side that is lowered when the vehicle is parked, and when the vehicle is parked, the upper end is located on a lower side than the The lower end is on a lower level.

According to the technical solution described in this aspect, in the case where a motorcycle or the like is parked on a side stand and the vehicle itself is tilted so that one side in the left-right direction is lowered, the electrical connection box is installed in the vehicle so that the upper end The upper end portion is located on a side that is at a lower position when the vehicle is parked, and the upper end portion is located at a lower level than the lower end portion. Therefore, the inclination angle of the inclined surface when the vehicle is parked is appropriately adjusted so that water is drained through the drain hole provided in the upper end portion. In addition, it is possible to prevent the problem that when the vehicle is parked, the angle of inclination of the inclined surface becomes so large as to be close to vertical, which instead prevents water from being promoted to be discharged through the drain hole.

A fourth aspect of the present invention is the electrical connection box according to the first aspect, wherein an electric wire lead-out hole is formed in a side wall of the lower cover provided on the lower end portion.

According to the technical solution of the present aspect, the wire lead-out hole is formed in the side wall of the lower cover provided on the lower end portion of the inclined surface. When the vehicle is parked, the upper end of the inclined surface is at a lower level than the lower end so that water is quickly drained through the drain hole in the upper end. Therefore, it is possible to prevent a risk that water may be discharged through the electric wire lead-out hole formed in the side wall on the lower end side, and that the discharged water may flow down along the electric wire and cause a malfunction of the electrical system.

Advantageous Effects of the Invention

According to the electrical connection box of the present invention, the bottom wall of the lower cover is provided with an inclined surface inclined downward from an upper end portion of one side toward a lower end portion of the other side, and drain holes are provided at opposite ends of the inclined surface. Therefore, even when the vehicle body is inclined toward either side with respect to the direction of inclination of the downwardly inclined surface, water is urged to be quickly drained through the drain holes provided at opposite ends of the inclined surface. Therefore, even in the case where the electrical connection box is installed in a vehicle in which the vehicle body itself may be inclined relative to the supporting surface, an effective drainage effect can be stably achieved.

Description of drawings

FIG. 1 is a front view of an electrical connection box according to an embodiment of the present invention.

FIG. 2 is a plan view of the electrical connection box shown in FIG. 1 .

FIG. 3 is a plan view of a box main body of the electrical connection box shown in FIG. 1 .

Fig. 4 is a cross-sectional view taken along line IV-IV in Fig. 2 .

Fig. 5 is a cross-sectional view taken along line V-V in Fig. 1 .

FIG. 6 is a plan view of a lower cover of the electrical connection box shown in FIG. 1 .

FIG. 7 is an enlarged perspective view of a relevant portion of the lower cover shown in FIG. 6 .

FIG. 8 is an explanatory diagram illustrating various states of the electrical connection box shown in FIG. 1 when the vehicle body is inclined relative to the supporting surface.

Fig. 9 is an explanatory diagram corresponding to Fig. 8(a) and another embodiment of the present invention.

Detailed ways

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, FIGS. 1 to 8 show an electrical connection box 10 according to the present invention. The electrical junction box 10 is arranged in an appropriate portion of a motorcycle (not shown) serving as a vehicle, and has a function of distributing electric power supplied from a battery to on-vehicle electrical equipment such as a motor, lights, and the like. It should be noted that the electrical connection box 10 is installed in the motorcycle so that the up-down direction in FIG. 1 coincides with the vertical direction. 1 shows the state of the electrical connection box 10 when the motorcycle is in a non-tilted state, in which the motorcycle is not tilted to the left or right with respect to the support surface, and when the motorcycle is tilted toward the vehicle body When tilting to the left or right of , the electrical junction box 10 also tilts to the left or right in FIG. 1 accordingly. In the following description, unless otherwise specified, "up-down direction" refers to the up-down direction in FIG. 1 , and "left-right direction" refers to the left-right direction in FIG. 1 .

More specifically, the electrical connection box 10 includes a box main body 12 , an upper cover 14 covering an upper opening of the box main body 12 , and a lower cover 16 covering a lower opening of the box main body 12 . The box main body 12, the upper cover 14, and the lower cover 16 are all formed of synthetic resin.

The box main body 12 has an elongated rectangular block shape as a whole, and as shown in FIG. ) The fuse mounting portion 20 is formed on the upper surface of the box main body 12 to open upward. As shown in FIG. 4 , a plurality of terminal accommodating holes 22 are formed in the lower surface of the box main body 12 so as to open downward, and crimp terminals 23 crimped to ends of individual electric wires 21 are accommodated and arranged in the respective terminal accommodating holes. 22 in. Further, in the box main body 12, a bus bar (not shown) constituting an internal circuit is housed and arranged in a bus bar accommodating groove or the like (not shown). It should be noted that for clarity of the drawings, only the electric wires 21 and the crimping terminals 23 are shown with phantom lines in FIG. 4 , and the electric wires 21 and the crimping terminals 23 are omitted in other drawings.

Furthermore, when the relays 24 a and 24 b and the fuse 26 as electrical components are mounted to the respective relay mounting portions 18 and the respective fuse mounting portions 20 from the upper surface side of the box main body 12 , the tab terminals protruding from the relays 24 a and 24 b and the fuse 26 28 is connected to a crimp terminal 23 crimped on the end of the electric wire 21, a bus bar not shown, etc., thereby forming an electrical connection.

The lock mounting parts 32 and 34 can be mounted to respective unillustrated fixing brackets, and the lock mounting parts 32 and 34 are arranged so as to face each other from the width direction of the box main body 12 (the up and down direction in FIG. 3 ). The outer peripheral surfaces of the respective peripheral walls 30a and 30c protrude. By mounting the lock mounts 32 and 34 to an unillustrated fixing bracket, the electrical junction box 10 can be stably held at a predetermined position in the vehicle.

Locking frames 36 are provided to protrude from respective peripheral walls 30b and 30d facing each other in the longitudinal direction (left-right direction in FIG. 3 ) of the box main body 12, each locking frame 36 is U-shaped in plan, and the locking frames 36 are located in the box main body. 12 near the upper opening. In addition, two locking protrusions 38 are provided to protrude from each of the peripheral walls 30b and 30d of the case main body 12, which are located near the lower opening and spaced from each other in the circumferential direction.

The upper cover 14 is in the shape of a box with a bottom opening downwards (see FIG. 4 ). In plan view, the upper cover 14 is formed in an elongated rectangle which is substantially the same as the upper surface of the case main body 12 (see FIG. 2 ). In the upper bottom portion 40 of the upper cover 14, pressing protrusions 42a and 42b protrude toward the respective relays 24a and 24b, and the pressing protrusions 42a and 42b are provided at positions where they are The positions of the pressing protrusions 42a and 42b are opposed to the respective relays 24a and 24b. As shown in FIG. 4, each of the pressing protrusions 42a and 42b is arranged to face each of the relays 24a and 24b with a slight gap therebetween. Therefore, if the relays 24a and 24b are displaced upward due to vibration or the like when the vehicle is advancing, the relays 24a and 24b abut on the respective pressing protrusions 42a and 42b, and the relays 24a and 24b are prevented from being accidentally separated from the relay mounting parts 18a and 18b. .

In addition, the spare fuse holding part 43 is provided on the upper bottom 40 of the upper cover 14 at a position where the spare fuse holding part 43 faces the fuse mounting part 20 during the upper cover 14 is assembled to the box main body 12, and the spare fuse holding part Portion 43 houses and holds spare fuse 26 .

The elastic locking piece 46 is provided to protrude in a cantilever manner from the respective peripheral walls 44b and 44d facing each other in the longitudinal direction of the upper cover 14 (the left-right direction in FIG. At intervals, the elastic locking member 46 is provided at a position facing each locking frame 36 of the box main body 12 . An outwardly protruding locking claw portion 48 is provided at the protruding end portion of each elastic locking piece 46 . It should be noted that the outer surfaces of the respective peripheral walls 44a and 44c facing each other in the width direction of the upper cover 14 (the up-down direction in FIG. 2 ) constitute a flat surface without any protruding parts.

During the above-mentioned assembly of the upper cover 14 to the upper opening of the box main body 12, as shown in FIG. overlap. In addition, when the upper cover 14 is pressed to the box main body 12 side, as shown in FIG. The locking pieces 46 are deformed to be bent inwardly, thereby allowing the upper cover 14 to be further pressed to the case main body 12 side. Then, when the locking pawl 48 moves above each locking frame 36 so that the elastic locking member 46 elastically returns, the locking pawl 48 engages with each locking frame 36, so that the upper cover 14 is locked in the following state: the upper cover 14 is installed to the upper opening of the box main body 12.

Next, the lower cover 16 has a bottomed box shape open upward (see FIG. 4 ). In plan view, the lower cover 16 is formed in an elongated rectangle substantially identical to the lower surface of the case main body 12 (see FIG. 6 ). The outer surfaces of the peripheral walls 50a and 50c facing each other in the width direction of the lower cover 16 (the up-down direction in FIG. 6) constitute a flat surface from which no part protrudes. On the other hand, two elastic lock pieces 52 are provided to protrude upward in a cantilever manner from the opening-side ends of each of the peripheral walls 50b and 50d facing each other in the longitudinal direction (left-right direction in FIG. 6 ) of the lower cover 16, The elastic locking member 52 is located at a position facing each locking protrusion 38 of the case main body 12 (see FIG. 7 ). Each elastic lock piece 52 has an inverted U shape, and protrudes upward from the opening-side ends of the corresponding peripheral walls 50b and 50d. When the engagement portion 54 provided on the protruding end portion of each elastic lock piece 52 interferes with the corresponding lock protrusion 38 , the elastic lock piece 52 is deformed to be bent to the outer peripheral side. Then, when the engaging portion 54 moves above the locking protrusion 38 and the elastic lock piece 52 elastically returns, the engaging portion 54 engages with the locking protrusion 38 . Therefore, the lower cover 16 is locked in a state where it is mounted to the lower opening of the box main body 12 .

In addition, an outer peripheral side water blocking wall 58 overlapping the outer peripheral surface of the peripheral wall 30 of the tank main body 12 and an inner peripheral side water blocking wall 60 overlapping the inner peripheral surface of the peripheral wall 30 of the tank main body 12 are provided on the peripheral wall 50 of the lower cover 16 on the opening end surface 56 of the opening end surface 56 , so that the outer peripheral side water blocking wall 58 and the inner peripheral side water blocking wall 60 are separated in the circumferential direction of the opening end surface 56 . Specifically, in a region of the open end surface 56 on the left side shown in FIG. 6 , an outer peripheral side water blocking wall 58 is provided protruding therefrom to extend along the peripheral walls 50 a , 50 b , 50 c. On the other hand, in the right region of the opening end surface 56 with respect to the central portion in FIG. 6 , an inner peripheral side water blocking wall 60 is provided protruding therefrom to extend along the peripheral walls 50c, 50d, 50a. By arranging the outer peripheral side water blocking wall 58 and the inner peripheral side water blocking wall 60 in the above-mentioned circumferentially divided manner, the lower cover 16 can be attached to the lower opening of the tank main body 12 in separate steps of A step of installing the outer peripheral side water blocking wall 58 and a step of installing the inner peripheral side water blocking wall 60 . Therefore, the mounting force required for one-time mounting can be reduced.

5 shows a state in which the inner peripheral side water blocking wall 60 provided on the opening end surface 56 of the lower cover 16 overlaps the inner peripheral surfaces of the peripheral walls 30a and 30c of the tank main body 12 in a cross-sectional view. Also, the outer peripheral side water blocking wall 58 provided on the opening end surface 56 is shown on the rear side, and it can be confirmed that the outer peripheral side water blocking wall 58 overlaps the outer peripheral surfaces of the peripheral walls 30 a and 30 c of the tank main body 12 .

In addition, as shown in FIG. 7, the lower cover 16 has an electric wire lead-out hole 62 formed at the center portion of the peripheral wall 50b between the elastic lock pieces 52, the wire lead-out hole 62 penetrating through the peripheral wall 50b and at the The open end surface 56 is opened so that the electric wires 21 mounted on the box main body 12 can be guided to the outside through the electric wire lead-out holes 62 . Therefore, the electric wire lead-out hole 62 is formed in the formation area of the outer peripheral side water blocking wall 58 which is provided to protrude from the opening end surface 56 to extend along the peripheral walls 50a to 50c, and the outer peripheral side water blocking wall 58 58 are separated in the circumferential direction by wire lead-out holes 62 . Further, as shown in FIG. 7, on the inner peripheral surface side of the peripheral wall 50b, on either side in the circumferential direction of the electric wire lead-out hole 62, the opening end surface 56 of the lower cover 16 constitutes an inclined end surface 64, which It is connected to the inner surface of the outer peripheral side water blocking wall 58 at an obtuse angle θ. Therefore, during the installation of the lower cover 16 to the lower opening of the box main body 12, the problem that the electric wires 21 drawn out through the electric wire lead-out holes 62 are held on the opening end surface 56 of the lower cover 16 and the peripheral wall of the box main body 12 can be advantageously prevented from occurring. 30b between the end surfaces. It should be noted that the obtuse angle θ is more preferably set to an obtuse angle of 135° or more.

On the other hand, the bottom wall 66 of the lower cover 16 has an inclined surface 68 which is inclined downward from the side of the peripheral wall 50d toward the side of the peripheral wall 50b, the upper end portion of the side of the peripheral wall 50d and one side in the longitudinal direction (the right side in FIG. 4 ). Correspondingly, the peripheral wall 50b corresponds to the lower end portion on the other side in the longitudinal direction (left side in FIG. 4 ). Here, the angle A of the downward inclination of the inclined surface 68 can be set as necessary in consideration of the installation space of the electrical connection box 10 and the like (see FIGS. 4 and 8 ). In this embodiment, the angle A is set to 10°. Further, drain holes 70 a and 70 b are formed at opposite ends of the bottom wall 66 in the longitudinal direction, which is the direction of inclination of the bottom wall 66 , and pass through the bottom wall 66 . The electric wire lead-out hole 62 is provided on the lower end side in the peripheral wall 50 b , that is, on the other side located at the lowest end in the direction of inclination of the bottom wall 66 . It should be noted that, as shown in FIG. 6, in the present embodiment, the drainage hole 70a is provided directly below a part of the area G, and the outer peripheral side water blocking wall 58 and the inner peripheral side water blocking wall 60 are separated in the circumferential direction at the area G, Thereby, even if water enters from the area G, it can be ensured that the water is quickly discharged through the drain hole 70a.

In the electrical junction box 10 of the present embodiment having the above-described structure, the bottom wall 66 of the lower cover 16 is provided with an inclined surface 68 inclined downward from the upper end on one side toward the lower end on the other side. Further, drain holes 70 a and 70 b are provided at opposite ends of the inclined surface 68 in the longitudinal direction of the electrical junction box 10 , which is the direction of inclination of the inclined surface 68 . Therefore, in the non-inclined state shown in FIG. 1 in which the body of the motorcycle does not incline with respect to the support surface, the gap between the mounting surface of the box main body 12 of the electrical connection box 10 and the upper and lower covers 14 and 16 The water that has entered the inside of the electrical connection box 10 and has reached the bottom wall 66 of the lower cover 16 flows downward along the downwardly inclined inclined surface 68 so as to collect toward the drain hole 70a and is quickly discharged through the drain hole 70a. 70a is provided on the peripheral wall 50b corresponding to the lower end side, that is, the other side located at the lowest end.

Next, the case where the body of the motorcycle is inclined relative to the supporting surface will be described using FIG. 8( a ) and FIG. 8( b ). 8( a ) and FIG. 8( b ) schematically show various situations in which the body 72 of the motorcycle is inclined relative to the support surface 74 . It should be noted that in FIGS. 8(a) and 8(b), for ease of understanding, the vehicle body 72 and the support surface 74 are conceptually shown with imaginary lines, and the electrical junction box 10 is shown in an enlarged manner. Cross-section.

FIG. 8( a ) shows a state where the motorcycle is parked using the side stand 76 , in which state the vehicle body 72 itself is inclined to the left with respect to the support surface 74 . In this case, the drain holes 70a and 70b provided in the inclined surface 68 are arranged so as to be spaced apart from each other in the left-right direction of the motorcycle while the electric connection box 10 is installed in the vehicle body 72 so that the inclined surface 68 The lower end portion of the lower end and the peripheral wall 50b are located on the left side which is lowered when the motorcycle is parked, and the drain hole 70a is arranged so as to be located on the peripheral wall 50b side corresponding to the lowest end of the inclined surface 68 . Therefore, when the motorcycle is parked, on the bottom wall 66 of the lower cover 16, the slope of the inclined surface 68 toward the drain hole 70a is steeper (A+α), that is, the vehicle body 72 is further inclined from a non-inclined state relative to the supporting surface 74. (vertical direction) the tilt angle α of the tilt. Therefore, the effect of collecting water toward the drain hole 70a and the effect of draining water through the drain hole 70a can be more favorably obtained.

FIG. 8( b ) shows a state where the vehicle body 72 itself is inclined at an angle β to the right with respect to the support surface 74 when the motorcycle turns right or accidentally tilts to the right during forward movement. In this case, since the electrical connection box 10 is inclined at an angle β with respect to the vertical direction, the end portion on the side of the peripheral wall 50d corresponding to the uppermost end of the inclined surface 68 in the non-inclined state (the right side in FIG. 8 ) Located at the lowermost end in the vertical direction, and the inclined surface 68 is inclined downward toward the end on the side of the peripheral wall 50d. Therefore, the water flows down along the inclined surface 68 and is collected to the upper end of one side so that the water can be quickly drained through the drain hole 70b provided in the upper end of the one side.

That is to say, in the conventional structure, assuming that the vehicle body 72 is in a non-inclined state in which the inclination has not occurred with respect to the support surface 74, the drain hole is only provided at the lower side of the inclination direction with respect to the inclined surface 68 in the non-inclined state. end side. For this reason, there is a problem that when the vehicle body 72 is inclined in a direction opposite to the downward inclination direction of the inclined surface 68, water collected to the inclined surface 68 side cannot be drained because no drain hole is provided on the inclined surface 68. According to the present embodiment, since the drain holes 70a and 70b are provided on opposite ends of the inclined direction of the inclined surface 68, even when the vehicle body 72 is inclined in the direction opposite to the downward inclined direction of the inclined surface 68, the water It can be quickly drained through the drain hole 70b. Therefore, even when the electrical connection box 10 according to the present embodiment is installed in a motorcycle in which the vehicle body 72 may be inclined relative to the support surface 74, the electrical connection box 10 according to the present embodiment can obtain an effective function suitable for motorcycles. drainage effect.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above specific description. For example, an installation direction and a position in which the electrical junction box 10 is installed in the vehicle can be set as needed. Specifically, in another embodiment shown in FIG. 9 , the electrical connection box 10 is installed in the vehicle body 72 so that the upper end portion (peripheral wall 50d side) of the inclined surface 68 is located on the left side in a lower position when the vehicle is parked. side, and the upper end portion of the inclined surface 68 is located at a lower level than the lower end portion (peripheral wall 50b side) in the vertical direction (up and down direction in FIG. 9 ) when the vehicle body 72 is parked. In this way, since the drain hole 70b is also provided in the upper end portion of this side, even when the vehicle body 72 is inclined in the direction opposite to the downward inclination direction of the inclined surface 68, water can quickly pass through. The drain hole 70b drains. In addition, it is possible to prevent the problem that, when the vehicle is parked, the inclination angle of the inclined surface 68 becomes so large as to be close to vertical, conversely inhibiting the drainage capacity.

Further, an electric wire lead-out hole 62 is formed in the peripheral wall 50 b which is a side wall of the lower cover 16 on the lower end side of the inclined surface 68 . According to the present embodiment, when the vehicle body 72 is parked, since the lower end portion (peripheral wall 50b side) of the inclined surface 68 is located at a higher level in the vertical direction than the upper end portion (peripheral wall 50d side), water can be advantageously prevented from passing through. The electric wire lead-out hole 62 formed in the peripheral wall 50b on the lower end side is discharged. As a result, it is possible to prevent the problem that the drained water may flow down along the electric wire 21 and cause the electrical system to malfunction.

Furthermore, although the form in which the electrical connection box 10 is installed in the motorcycle has been described in the present embodiment, the present invention is not limited thereto. For example, even when the electrical junction box 10 is provided in a four-wheeled automobile whose vehicle body does not incline with respect to the support surface, it is assumed that the upper end portion on the side of the inclined surface 68 (the drain hole 70b side) is It may be located on a lower level than the lower end portion (the drain hole 70a side) on the other side in the vertical direction. Even in such a case, water can be quickly drained through the drain hole 70b in the upper end portion of the one side, thereby achieving an effective draining effect.

Furthermore, the inclination angle of the inclined surface 68 provided in the bottom wall 66 of the lower cover 16 and the number, positions, etc. of drain holes can be changed after properly considering the installation space of the electrical connection box, the possibility of exposure to water, and the like.

List of reference signs

10 electrical connection box

12 boxes of main body

16 lower cover

24a, 24b relay (electrical components)

26 fuses (electrical components)

50d surrounding wall (side wall)

62 wire outlet hole

66 bottom wall

68 inclined surfaces

70a, 70b drainage holes

72 body

Claims (4)

1. can be arranged on the electric connection box in vehicle, described electric connection box comprises:

Box main body, electric component is mounted to described box main body; With

Lower cover, described lower cover covers the under shed of described box main body,

Wherein, the diapire of described lower cover has inclined surface, and described inclined surface is downward-sloping towards the bottom on opposite side from the upper end side, and described inclined surface, be provided with osculum in opposite end portion on incline direction.

2. electric connection box according to claim 1, wherein, described vehicle is such type: it rests in following state: described vehicle run-off the straight, thus the side on its left and right directions is lowered, and

Described electric connection box is installed in described vehicle, thus described lower end part is when when described vehicle parking, on the described side that is lowered.

3. electric connection box according to claim 1, wherein, described vehicle is such type: it rests in following state: described vehicle run-off the straight, thus the side on its left and right directions is lowered, and

Described electric connection box is installed in described vehicle, thus described upper-end part of driving is when when vehicle parking, on the described side that is lowered, and when described vehicle parking, described upper-end part of driving is in the level lower than described bottom.

4. electric connection box according to claim 3, wherein, described lower cover, be arranged on described bottom sidewall in be formed with electric wire leadout hole.