JP2992463B2 - Washer tank - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washer tank for storing a cleaning liquid discharged by a washer pump.

[0002]

2. Description of the Related Art Conventionally, an automobile has been provided with a washer device for cleaning windshield glass and the like. The washer device is disposed in the engine room and stores a washing liquid, a washer pump attached to the washer tank to supply the washing liquid, and the washing liquid supplied by the washer pump is directed to the windshield glass or the like. And a washer nozzle for jetting.

[0003] When the above-mentioned washer tank is disposed in the lower part of the engine room, the washer pump may be wet during driving of the vehicle. In this case, since a breathing hole is provided at the lower portion of the washer pump to reduce heat generated by the operation of the motor and fluctuations in the pump chamber pressure caused by cooling, the motor of the washer pump is respired through the breathing hole. Water may enter the room and cause the motor to rust. Therefore, conventionally, a structure for preventing a washer from being wet as described below has been adopted.

As shown in FIG. 8, a washer pump 104 is mounted on a side of a washer tank 100 via a grommet 102. A waterproof cover 106 made of resin is provided on the bottom side of the washer pump 104 to prevent water from entering from below the vehicle body. It should be noted that the direction of being wet is indicated by arrow A.

FIG. 9 shows details of the waterproof cover 106 described above. As shown in this figure, a breathing hole 108 is formed in the waterproof cover 106 to alleviate fluctuations in the pump chamber pressure. This breathing hole 108 is formed in a maze shape, and in this regard, the effect of preventing the washer pump 104 from being wet can be obtained.

[0006]

However, in the case of the above configuration, since the waterproof cover 106 is formed as a separate component from the washer pump 104, the number of components is increased and the manufacturing cost is increased. Further, the waterproof cover 10
6 is attached to the bottom of the washer pump 104 by ultrasonic welding, which also increases costs.

The present invention has been made in consideration of the above-described circumstances, and has as its object to provide a washer tank that can reliably prevent a washer pump from being flooded with a low-cost configuration.

[0008]

According to a first aspect of the present invention, there is provided a washer tank having an inlet insertion hole at a low position on a tank outer wall whose lower side in the tank height direction is open, A tank body for washing liquid storage in which the washer pump is mounted at a low position on the outer wall of the tank by inserting an inlet provided at a low position on a side portion of the washer pump, and provided integrally from the tank body; A bottom wall extending below the bottom of the washer pump to prevent water from being applied to the washer pump from below; and a front wall and a rear side extending from the bottom of the side of the washer pump. And a side wall configured to prevent water from being applied to the washer pump from the front side and the rear side. According to a second aspect of the present invention, in the washer tank according to the first aspect, the bottom wall is formed so as to have a downward slope as the distance from the tank body increases.

According to the first aspect of the present invention, the tank body is configured to include the bottom wall and the side wall, and the wall body for preventing water from being applied to the washer pump is integrally provided. Specifically, the bottom wall extending below the bottom surface of the washer pump prevents water from being applied to the washer pump from below. Furthermore, the side walls extending to the front side and the rear side of the bottom side of the side portion of the washer pump prevent water from being applied to the washer pump from the front side and the rear side. It is the bottom wall that plays the main water blocking action, but considering the direction of water coverage when the vehicle is running,
During forward movement, there is water from the front side outside the installation range of the bottom wall, and during backward movement, there is water from the rear side outside the installation range of the bottom wall. Therefore, by blocking the water from the three directions by the bottom wall and the side wall, it is possible to reliably prevent the washer pump from being wet.

Further, since the wall is provided integrally with the tank body, the number of parts is reduced as compared with the case where a waterproof cover is separately provided. Therefore, manufacturing costs are reduced. Further, since the wall is provided integrally with the tank body, the assembling operation is not required. Therefore, also in this respect, cost reduction can be achieved. For these reasons, the configuration is low in cost. According to the second aspect of the present invention, the bottom wall is formed so as to have a downward slope as the distance from the tank main body increases, so that even if water infiltrates the bottom wall, the downward slope is formed. The water can be reliably drained by the bottom wall.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIG. 4 is a front view of the washer tank 10 according to the present embodiment, FIG. 5 is a side view of the washer tank 10, and FIG. A bottom view is shown. As shown in these figures, the washer tank 10 has a substantially rectangular parallelepiped shape and includes a tank main body 12 that stores a cleaning liquid therein. The tank body 12 is made of resin. At the top of the tank body 12, a cylindrical cleaning liquid injection section 14 is provided.
Is provided. Further, a plurality of brackets 16 are fixed to appropriate portions of the side of the tank main body 12, and the tank main body 12 is fixed to the vehicle body via the brackets 16.

A pair of pump housing grooves 18 and 20 are provided side by side on one side of the tank body 12 described above. One of the pump receiving grooves 18 has a washer pump 2 for the front.
2, and a rear washer pump 24 is provided in the other pump housing groove 20. A motor (not shown) for driving the pump is disposed inside each of the washer pumps 22 and 24. It is not always necessary to separately provide the washer pump 22 for the front and the washer pump 24 for the rear, and a washer pump for both the front and the rear may be provided.

FIG. 1 shows a washer tank 1 as viewed from the front.
The vicinity of the washer pumps 22 and 24 at 0 is shown enlarged. As shown in this figure, the washer pumps 22 and 24 are provided with a pair of power supply terminals 26 and 28 and connector fitting portions 30 and 32 at each upper end, and an outlet 34 at the lower side of each side. , 36 and inlets 38, 40 (see FIGS. 2 and 3).

A grommet 42 is attached to each of the inlets 38 and 40, and the grommet 42 is inserted into an inlet insertion hole 43 formed in the wall of the tank body 12 (see FIG. 2).
And FIG. 3).
The insides of the washer pumps 22 and 24 and the inside of the tank main body 12 are communicated via 8, 40. One end of a front hose 44 is attached to the outlet 34 of the front washer pump 22, and one end of a rear hose 46 is attached to the outlet 36 of the rear washer pump 24. The other end of the front hose 44 is connected to a pair of washer nozzles 50 (see FIG. 7) disposed near the lower part of the windshield glass 48, and the other end of the rear hose 46 is near the lower part of the rear glass. Is connected to a washer nozzle (not shown).

Here, as shown in FIGS. 1, 2 and 3, the washer tank 10 has a wall 52
Are integrally formed. The wall body 52 includes a pair of side walls 52A extending along the height direction to the side of the washer pumps 22 and 24, though there are lengths, and a bottom wall 52B that horizontally connects lower end portions of the side walls 52A. And a partition wall 52C that rises from the longitudinal middle portion of the bottom wall 52B and is disposed between the washer pump 22 for the front and the washer pump 24 for the rear. An opening 54 for arranging the rear hose 46 is formed in one side wall 52A of the wall body 52.
The wall 52 is integrally formed when the washer tank 10 is formed.

The bottom wall 52B of the wall body 52 is disposed so that the wall surface is located below the bottom surfaces of the washer pumps 22 and 24. Further, the upper end wall surface of the bottom wall 52B is a tapered surface that is inclined downward from the inside to the outside of the washer tank 10 (FIG. 2).
And FIG. 3). Therefore, even if water invades from the lower side of the vehicle body, the water is surely drained to the outside of the washer pumps 22 and 24 by the downwardly inclined bottom wall 52B. In the above configuration, the side wall 52A disposed on the front side and the partition wall 52C disposed on the rear side of the front washer pump 22 correspond to the "side wall" in the present invention. In the rear washer pump 24, the partition wall 52C disposed on the front side and the side wall 52A disposed on the rear side thereof correspond to the "side wall" in the present invention.

Next, the operation and effect of this embodiment will be described. When a washer switch (not shown) is turned on,
The motors in the washer pumps 22 and 24 operate. For this reason, the cleaning liquid contained in the tank body 12 of the washer tank 10 is supplied through the front hose 44 and the rear hose 46 to the front washer nozzle 5.
0, fed to the rear washer nozzle. As a result, the cleaning liquid is sprayed from the washer nozzle 50 and sprayed onto the windshield glass 48 and the rear glass.

The washer tank 10 which operates as described above
The tank body 12 is provided with a wall body 52, and the bottom wall 52B of the wall body 52 is disposed below the bottom surfaces of the washer pumps 22, 24, so that water tends to enter from below the vehicle body. In this case, the infiltration of the water is reliably prevented by the bottom wall 52B. Therefore, the washer pump 2
2, 24 can be reliably prevented from being wet.

Further, in the present embodiment, the wall 52
Are formed integrally with the tank body 12, so that the number of parts can be reduced as compared with a configuration in which a waterproof cover is separately attached as in the related art. For this reason, manufacturing costs can be reduced. In addition, since the wall 52 is formed integrally with the tank main body 12 when the washer tank 10 is formed, an assembling operation for mounting the wall 52 to the tank main body 12 is not required. Therefore, also in this respect, cost can be reduced. As a result, it is possible to reliably prevent the washer pumps 22 and 24 from being wet with a low-cost configuration.

Further, according to the present embodiment, the wall 52 can prevent stones from being applied to the washer pumps 22 and 24, so that the fender liner can be eliminated or, if not eliminated, the shape of the fender liner can be reduced. Can be simplified.

In this embodiment, the wall body 52 composed of the side wall 52A, the bottom wall 52B, and the partition wall 52C is used. However, the present invention is not limited to this, and at least the wall surface is provided below the bottom surface of the washer pump. If so, it is possible to use wall bodies having various wall shapes.

[0023]

As described above, the washer tank according to the first aspect of the present invention extends below the bottom surface of the washer pump to prevent the washer pump from being exposed to water from below. A tank comprising a wall and a side wall extending to a front side and a rear side of a bottom side of a side portion of the washer pump and configured to prevent water from entering the washer pump from a front side and a rear side is configured as a tank. Since it is provided integrally with the main body, there is an excellent effect that it is possible to reliably prevent the washer pump from being wet by a low-cost configuration. In particular, since not only the bottom wall for the main water blocking action is set, but also the water blocking walls from the front side and the water blocking wall from the rear side are provided, respectively, On the other hand, it can be blocked by the bottom wall and the side wall, respectively. As a result, according to the present invention, the effect of preventing the washer pump from being wetted can be further ensured. Further, in the washer tank according to the present invention described in claim 2, in the invention described in claim 1, the aforementioned bottom wall is formed so as to have a downward slope as the distance from the tank body is increased. Even if water intrudes into the inside, the water can be reliably drained. As a result, in addition to the effect of preventing the washer pump from receiving water according to the first aspect of the present invention, drainage of the intruded water is performed. Nature can be secured. Therefore, according to the present invention, it is possible to ensure thorough waterproofing of the washer pump.

[Brief description of the drawings]

FIG. 1 is an enlarged view showing a main part of a washer tank having a partition wall according to the present embodiment.

FIG. 2 is a sectional view taken along line 2-2 of FIG.

FIG. 3 is a sectional view taken along line 3-3 in FIG. 1;

FIG. 4 is a front view of the washer tank according to the embodiment.

FIG. 5 is a side view of the washer tank according to the embodiment.

FIG. 6 is a bottom view of the washer tank according to the embodiment.

FIG. 7 is a configuration diagram schematically showing a washer device including a washer tank according to the present embodiment.

FIG. 8 is a sectional view of a main part showing a washer tank provided with a waterproof cover according to a conventional example.

FIG. 9 is an enlarged sectional view showing the internal structure of the waterproof cover shown in FIG. 8;

[Explanation of symbols]

 Reference Signs List 10 washer tank 12 tank body 22 washer pump 24 washer pump 38 inlet 40 inlet 43 inlet insertion hole 52 wall 52A side wall 52B bottom wall 52C partition

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B60S 1/50

Claims (2)

(57) [Claims] 1. A tank having a lower side opened in a tank height direction.
The lower end of the outer wall has an inlet insertion hole,
At the bottom of the side of the washer pump.
By inserting the inlet into the tank
Washer in which the washer pump is mounted at a low position on the side wall
A tank body for storing the purified liquid, and the washer
To the washer pump
A bottom wall for preventing water from entering from below, and the washer
Extend to the front and rear of the bottom of the pump
From the front and rear sides to the washer pump
A washer tank comprising: a wall configured to include a side wall that prevents water from being wetted; (2) The bottom wall moves away from the tank body
It is formed so that it becomes a downward slope The washer tank according to claim 1, wherein: