JPS5937378A - Car strainer - Google Patents

Abstract

PURPOSE:To provide possibility of pumping the liquid from a deeper place even when the running condition has caused inclination to the liquid surface in the sump by furnishing a car strainer with two or more intakes, which take in the working fluid through the corresponding number of places in the sump and with a valve to control opening/closing of said intake lines in linkage with the inertia force, gravity, etc. applied to the car. CONSTITUTION:The body 1 of a strainer 28 is furnished with intake ports 2a, 2b, which are to take in the working fluid from different places of the sump, and with an outlet 3 in connection with an oil pump. Bearings 5, 6 and valve seats 7, 8 are provided in a chamber 4 formed inside this body 1. These bearings 5, 6 support a shaft 9 slidably in the horizontal direction, and valve seats 10, 11 are fixed to the two ends of this shaft 9. When the running condition has caused inclination to the liquid surface in the sump, the shaft 9 moves also by the action of inertia force and/or gravity to shut one of the valve lids 10, 11 whichever is situated above and open the other. Thus the working fluid is taken in from one of the intake ports 2a, 2b which lies below.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a strainer for a vehicle that is attached to a conduit for suctioning working fluid, such as a working fluid reservoir for a power steering or an automatic transmission, which is mainly attached to an automobile.

A conventional strainer of this type is shown in FIG. Strainer body 1 includes power steering,
It has a suction port 2 that sucks working fluid from a working fluid reservoir such as an automatic transformer, and a discharge port 8 that is connected to a suction pump (not shown). There is a net jA inside that serves to remove impurities from the inhaled working fluid.

By the way, this strainer has one suction port for the working fluid and is designed to suck the working fluid from a single point in the working fluid reservoir of a given device. There is a problem in that the level of the working fluid in the working fluid reservoir is tilted during operation, and the suction port in the working fluid reservoir may come out above the level of the working fluid and inhale air. Ta.

SUMMARY OF THE INVENTION An object of the present invention is to solve the problems with conventional strainers and to provide a strainer that can reliably suck working fluid regardless of the slope of the working fluid level in the working fluid reservoir.

In order to achieve this object, the strainer of the present invention has a plurality of suction ports each sucking the working fluid from a plurality of locations in the working fluid reservoir, and opening/closing channels for the fluid sucked from these suction ports. and a valve for controlling the opening and closing of the valve based on the magnitude and direction of inertial force and gravity applied to the fluid, and controlling the operation of the working fluid in the working fluid reservoir.
This system is characterized by the fact that when the liquid level of the body is tilted, the working fluid is sucked in from a deep part of the liquid level.

The strainer of the present invention will be fully described in detail below with reference to the drawings.

FIG. 2 is a diagram illustrating an embodiment of the strainer of the present invention, and FIG. 8 is a diagram illustrating the oil strainer according to the embodiment of the present invention as applied to an automatic transaxle KJ.

In FIG. 8, 20 is an automatic transaxle, and this automatic transaxle includes a torque converter 21, a planetary gear set 22 operated by brakes and clutches, a hydraulic control device 23 for fully operating brakes and clutches, and a differential gear fully operated. Final drive device 2
It consists of 4 etc. A suction pump 25 is connected to a strainer 28 that opens into a working fluid reservoir 27 via an oil passage 26. Suction ports 2a and 2b that suck working fluid from separate locations in the single strainer body of the strainer 28 and an oil pump 2 (not shown)
A bearing 5.6 and a valve seat 7.8 are disposed within a chamber 4 formed inside the main body l, having a discharge port 3 connected to a bearing 5.6 and a valve seat 7.8? i7
establish. A shaft 9 is supported slidably in the entire horizontal direction by bearings 5.6, and valve seats 10.11 are fixed to both ends of this shaft 9. Note that the direction of the position where the suction ports 2a and 2b communicate with the working fluid reservoir 27 of a predetermined device is made to coincide with the sliding direction of the support 9. For example, when the suction ports 2a and 2b are communicated with each other in the left and right directions in the working fluid reservoir 27, the shaft 9 is made to be able to slide in the left and right directions. When the suction ports 2a and 2b are communicated with each other in the rear direction inside the ItJJ fluid reservoir, the girdle 9 is allowed to slide in the front-rear direction.

Next, the entire operation of this strainer will be explained. Depending on the driving condition of the vehicle, turning (in this case, the intake ports 2a and 2b are located in the lateral direction of the vehicle), climbing board, and bushing (in these cases, the intake ports 2a and 2b are located in the longitudinal direction of the vehicle) When the liquid level of the working fluid in the working fluid reservoir of a given device is tilted due to inertial force or gravity, the shaft 9 also moves due to inertial force or gravity, and one of the valve covers 1O111 is closed. ,
The lower side 'fr is opened and the working fluid is sucked from the lower side suction port of the suction oga and 2b. For example, when inertia force or gravity acts from the right side to the left side in Fig. 2, the shaft 9 moves to the left, opens the valve cover 1o, closes the valve cover 11, and inlets 2b.
Inhale working fluid from the side. At this time, the working fluid in the working fluid reservoir is tilted so that the liquid level on the left side becomes better, so that the working fluid is sucked in only from the part where the depth becomes deeper due to the slope of the a-plane. Of course, it goes without saying that the intake location may also be provided both in the longitudinal direction and in the lateral direction of the vehicle.

The strainer of the present invention configured in this way always sucks working fluid from the deeper side when the vehicle operating condition z or the liquid level in the working fluid reservoir changes, so it is easy to use when turning, climbing or descending, or braking. Since the working fluid can be reliably sucked in without sucking in all of the air in the working fluid reservoir, devices that use the working fluid can operate reliably, and the running safety of the vehicle can be completely improved. It is something.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing the structure of a conventional strainer, Fig. 2 is a cross-sectional view showing the structure of an embodiment of the strainer of the present invention, and Fig. 8 is a cross-sectional view showing the structure of the strainer according to the embodiment of the present invention shown in Fig. 2. It is a figure which shows the state applied to an axle. 1... Strainer body, 2... Suction port, 2a, 2b
... Suction port, 8... Discharge port, 4... Chamber, 5
．． 6...Bearing, 7.8...Valve seat, 9...Shaft, 10
．． 11... Valve lid, 28... Strainer.

Claims (1)

[Claims] 1. In a strainer installed in a conduit that sucks working fluid from a working fluid reservoir of a device mounted on a vehicle, a plurality of strainers each sucking working fluid from a plurality of locations separated from each other in the horizontal direction within the working fluid reservoir. suction ports, and valves for opening and closing passages for fluid sucked through these suction ports, and controlling the opening and closing of the valves based on the magnitude and direction of inertia and/or gravity applied to the vehicle. A vehicle strainer characterized in that it performs the following.