JPS64368Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a liquid tank for cleaning vehicle window glass.

[Prior art] For example, Publication of Utility Model Publication No. 1985-85 and Publication of Utility Model Application Publication No. 56-120939
As disclosed in Japanese Patent Application Publication No. 2003-110001, a pump unit is known that is removably assembled to a liquid tank. As shown in FIG. 1, a conventional liquid tank 2 is made of synthetic resin and has a substantially rectangular parallelepiped shape, and a recess with a mounting opening 18 is provided in one lower side wall of the tank, and a motor 5 and an impeller 4 are integrated into this recess. A pump unit 3 provided therein is fixed by suitable means, and a suction pipe 19 is fitted into an attachment port 18 and protrudes into the interior of the liquid tank 2.
At the top of the liquid tank 2 is a lid 1 having an air vent hole 7.
will be provided. The liquid tank 2 is fixed at a predetermined position on the vehicle body, and a wiring 6 extending from a pump unit 3 is connected to a battery, and a discharge pipe 8 is connected to an injection nozzle located near a window glass.

In such a liquid tank with a removably assembled pump unit, if the pump unit is installed on the side wall of the liquid tank, the pump unit must first be installed together with the liquid tank due to space limitations for installing the liquid tank on the vehicle body. must be removed from the vehicle body, and then the pump unit must be removed from the fluid tank. To do this, it is necessary to allow sufficient length for the conductor wires and water pipes connected to the pump unit, and a means of supporting them to the car body wall is required to prevent them from becoming slack, and when removing the liquid tank. Also requires caution. If the pump unit is simply attached to the upper wall of the liquid tank, if the liquid tank becomes empty and air is sucked into the pump unit, the pump will not restart smoothly after refilling the liquid tank with water. There is a problem of lack.

[Problems to be solved by the invention] The purpose of the invention is to provide a liquid tank for window cleaning in which the pump unit can be easily removed from the liquid tank and the pump can be restarted even if air is sucked in. be.

[Means for solving the problem] In order to achieve the above object, the structure of the present invention is such that the liquid tank has a suction port at the bottom of the lid that closes the injection hole of the liquid tank that is removably supported on the vehicle body. A pump unit protrudes from the bottom of the pump.

[Function] When removing the liquid tank, it can be easily removed by simply pulling up the pump unit, without requiring special attention to the routing of water pipes and conducting wires extending from the pump unit. Since the pump unit is inserted into the bottom of the liquid tank, the air sucked into the pump can be easily released after refilling with water, ensuring smooth restart of the pump.

[Embodiment of the invention] To explain the invention based on an embodiment, as shown in FIG.
It is designed to be supported by the wall of the vehicle body. The band 9 is made of hard synthetic resin or the like, and its intermediate portion is fixed to the wall of the vehicle body with a bolt 10 (FIG. 3). A hook 16 is formed at one end, and a rectangular opening 15 and a handle 14 are formed at the other end.

As shown in FIG. 2, a liquid inlet 20 is provided at the upper part of the liquid tank 2, and a pump unit 3 is integrally constructed with a lid 1 that closes the inlet. That is,
As shown in FIG. 4, in the pump unit 3, a lid 1 is connected to the opening of a cup-shaped housing 30 via a seal member 12, and an air vent hole 7 formed in the lid 1 is connected to the case 30 through a pipe 11. It is supported through the upper wall. In order to form the pump housing 31, a suction port 26 is installed in the partition wall 27 of the case 30.
is provided, and an opening 24 is provided in the peripheral wall between the partition wall 27 and the bottom wall 25.

A cylindrical pump housing 31 that accommodates the impeller 4 is fitted inside the case 30 and fixed with screws 22 . pump housing 3
A cylindrical portion 23 is integrally formed above the cylindrical portion 1 with a partition wall 35 interposed therebetween, and a motor 5 is fitted and supported by the cylindrical portion 23. The main shaft of the motor 5 passes through the partition wall 35 and supports the impeller 4.

A discharge pipe 8 is also integrally formed at the upper end of the pump housing 31, and this discharge pipe 8 passes through the lid 1 and extends to the outside. Further, a wiring 6 for connecting the motor 5 to a power source passes through the lid 1 and extends to the outside.

By configuring the present invention as described above,
The band 9 fixed to the vehicle body is wrapped around the recess of the liquid tank 2, and the opening 15 is engaged with the hook 16, so that the liquid tank 2 is supported by the vehicle body. The pump unit 3 is installed by inserting it into the liquid tank 2 through the liquid injection port 20 and fitting the lid 1 into the liquid injection port 20.

Therefore, when the motor 5 is driven, the cleaning liquid inside the liquid tank 2 flows from the suction port 26 to the impeller 4.
is sent to the discharge pipe 8, and is ejected onto the window glass from a nozzle placed near the window glass. The pressure inside the liquid tank 2 is maintained at atmospheric pressure by an air vent pipe 11.

When the cleaning liquid in the liquid tank 2 runs out, remove the lid 1, pull out the pump unit 3, and tighten the handle 1.
4 and disengage the hook 16 from the opening 15, the liquid tank 2 can be removed from the vehicle body. Therefore, even if the liquid tank 2 becomes empty during operation, the liquid tank 2 can be removed and carried to a water source, for example, a river, and river water can be directly drawn and used as a cleaning liquid.

Furthermore, in the present invention, the pump unit 3 is housed at the bottom of the liquid tank 2, so even if the liquid tank 2 becomes empty and air is sucked into the pump unit 3, the liquid tank 2 cannot be refilled with liquid. For example, the pump unit 3 is superior to the conventional pump shown in FIG. 1 in that air can be easily released during insertion of the pump unit 3 into the liquid tank 2.

[Effects of the invention] As described above, the invention combines a pump unit that has a suction port at the bottom and projects toward the bottom of the liquid tank with a lid that closes the injection hole of a liquid tank that is removably supported on the vehicle body. The pump unit is connected to the lid of the liquid tank, so when removing it from the liquid tank, all you have to do is pull it up.
There is no need to pay special attention to the routing of water pipes, conductors, etc., and the operation is simple. Naturally, the routing and support means for water pipes and conductors become easier.

There is a suction port at the bottom of the pump unit, so when the pump unit is assembled and inserted into the liquid tank, the suction port approaches the bottom of the liquid tank and the water in the liquid tank enters near the impeller of the pump housing, causing it to be sucked in. The trapped air is easily released, ensuring smooth pump restart.

[Brief explanation of the drawing]

Figure 1 is a side sectional view of a conventional window cleaning liquid tank, Figure 2 is a perspective view of the window cleaning liquid tank according to the present invention with the pump unit removed, and Figure 3 is a window cleaning liquid tank. FIG. 4 is a perspective view of a band for supporting the pump unit on the vehicle body, and FIG. 4 is a side sectional view of the pump unit. 1: Lid, 2: Liquid tank, 3: Pump unit,
4: impeller, 5: motor, 6: wiring, 7: air vent hole, 8: discharge pipe, 9: band, 20: liquid injection port, 26: suction port, 30: case, 31: pump housing.

Claims (1)

[Scope of utility model registration request] A liquid tank for window cleaning, characterized in that a pump unit having a suction port at the bottom and projecting to the bottom of the liquid tank is coupled to a lid that closes a liquid injection hole of the liquid tank detachably supported on a vehicle body.