JP2830077B2 - Control valve unit for automatic transmission - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a control valve unit that creates a control oil pressure for a fastening element of an automatic transmission, a torque converter, and the like.

(Conventional technology) Conventionally, as a control valve unit of an automatic transmission, for example, a control valve unit described in 3-6 transmission & transfer overhaul sectional view of "TYOTA A440L A440F Automatic Transmission Repair Manual" (issued on November 11, 1984) It has been known.

In this conventional source, in order to be able to lay out a complicated oil passage, an upper valve body which is arranged at the lower part of the power train and has an oil groove on the lower surface, and is provided in an oil-tight state on the lower surface of the upper valve body, A first lower valve body having an oil groove on an upper surface and a vehicle rear side lower surface, an oil strainer provided on a strainer mounting surface on a vehicle front lower surface of the first lower valve body, and a rear position of the oil strainer. 1 shows a control valve unit including a second lower valve body having an oil passage and an oil groove provided on a plate mounting surface on a lower surface of a first lower valve body on a vehicle rear side.

(Problems to be Solved by the Invention) However, in such a conventional control valve unit, a thick second lower valve body having an oil passage and an oil groove is provided on the lowermost surface on the rear side of the vehicle. When laying out electronic control components such as solenoids and harnesses for electronic control in this control valve unit, or when expanding the capacity of an oil strainer, the height above the oil pan that covers the unit is reduced, or when electronic control components and oil The degree of freedom in layout of the strainer and the like is reduced.

That is, when laying out electronic control components such as solenoids and harnesses for electronic control in the control valve unit, first lay out the oil strainer near the oil pump near the oil pump.

Therefore, the overall thickness of the unit for laying out the electronic control components on the lower surface of the second lower valve body becomes very large,
The height above the oil pan covering the unit is low, which is disadvantageous.

Further, when the electronic control components are laid out around the second lower valve body, the space margin is not sufficient, and the degree of freedom of layout of the electronic control components is low and severe.

Similarly, when the oil strainer is increased in order to increase the capacity of the oil strainer, there is no room for space and the layout flexibility is reduced.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems. In a control valve unit of an automatic transmission capable of laying out a complicated oil passage by increasing the number of hydraulic circuits, an advantage of a ground clearance and a lower valve lower surface are provided. An object of the present invention is to achieve compatibility with an increase in the degree of freedom in layout of components to be arranged.

(Means for Solving the Problems) In order to solve the above problems, a control valve unit of an automatic transmission according to the present invention is provided with a closing plate having no oil passage or oil groove on a lowermost surface of a lower valve body on a vehicle rear side. I did it.

An upper valve body having an oil groove on a lower surface thereof, and a lower valve body provided in an oil-tight state on a lower surface of the upper valve body and having oil grooves on an upper surface and a lower surface on a vehicle rear side. An oil strainer provided on a strainer mounting surface on a vehicle front lower surface of the lower valve body; and an oil passage provided on a plate mounting surface on a vehicle rear lower surface of the lower valve body at a position rearward of the oil strainer. And a closing plate having no oil groove.

(Operation) Since an empty space can be obtained on the lower surface of the closing plate, when laying out electronic control parts such as solenoids and harnesses for electronic control, the electronic space is provided on the lower surface of the closing plate and / or extra space around the closing plate. The degree of freedom in component layout on the lower surface of the lower valve body is improved, for example, a control solenoid and a thick harness connector can be arranged.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

 First, the configuration will be described.

1 is an overall view showing an automatic transmission for an FR vehicle to which the control valve unit of the embodiment is applied, FIG. 2 is a partially cutaway view showing the control valve unit of the embodiment, FIG.
The figure is a bottom view showing the control valve unit of the embodiment as viewed from below with the oil pan removed.

The control valve unit is disposed below the power train 1 and has an upper valve body 2 having an oil groove 2b on the lower surface of the body portion 2a, and is provided on the lower surface of the upper valve body 2 in an oil-tight state. Lower valve body 3 having oil grooves 3b, 3c on the upper surface and the lower surface on the rear side of the vehicle
And an oil strainer 4 provided on a strainer mounting surface 3d on the lower surface of the lower valve body 3 on the vehicle front side, and a plate mounting surface 3e on the lower surface of the lower valve body 3 on the vehicle rear side at a position rearward of the oil strainer 4. A closing plate 5 having no oil passage and oil groove provided therein, and an oil pan 6 covering the entire control valve unit are provided.

The body portion 2a of the upper valve body 2 is provided with a valve hole 2c in which a valve spool is provided so as to be strokeable, in addition to the oil groove 2b.

The lower valve body 3 includes an upper valve body 2
Are provided on the lower surface in an oil-tight manner via a gasket 7, and an oil passage is formed by the oil groove 3 b of the lower valve body 3 and the oil groove 2 b of the upper valve body 2.

Further, a valve hole 3f is formed in the body portion 3a on the vehicle rear side in addition to the oil grooves 3b and 3c.

Further, to be more advantageous in terms of the height above the ground, the plate mounting surface 3e as viewed from the ground is formed at a position one step higher than the strainer mounting surface 3d.

The oil strainer 4 is arranged so as to occupy the lower surface of the lower valve body 3 on the vehicle front side, and is bolted to the lower valve body 3. Since the oil pump 8 is provided on the front side of the vehicle, the discharge port 4a is inserted into the pump suction passage 8a, and the suction port 4b is disposed at a substantially central position of the oil pan 6.

The closing plate 5 is an iron plate having no oil passage and oil groove bolted to the plate mounting surface 3e of the lower valve body 3, but outside the oil groove 3c formed in the body portion 3a of the lower valve body 3. An oil passage is formed by closing the exposed portion.

As shown in FIG. 1, when the automatic transmission is mounted on the vehicle with a slight downward inclination at the rear side of the vehicle, the oil pan 6 has a height relationship with the ground, and the front side of the vehicle is also on the rear side. Also, the bottom plate is formed as an inclined bottom plate 6a having a slight upward inclination toward the rear side of the vehicle so that the ground height is substantially the same.

At the bottom of the oil pan 6, a magnet 9 for adsorbing iron powder contained in the hydraulic oil is arranged.

Solenoids 10 and 11 for electronic control are fixed to a body portion 3a of the lower valve body 3, and an oil temperature sensor 12 is disposed.

As shown in FIG. 3, electronic control components such as a harness 13 and a harness connector 14 for applying electricity to the solenoids 10 and 11 and the oil temperature sensor 12 are provided with a thick harness connector 14 on the lower surface of the closing plate 5. The harness 13 is arranged at a predetermined distance from the suction port 4b so as not to block the suction port 4b by suction of the hydraulic oil by the oil strainer 4. In addition, 15 is a harness bracket.

 Next, the operation will be described.

When laying out electronic control components such as the solenoids 10 and 11 and the harness 13 for electronic control, the solenoids 10 and 11 for electronic control are fixed to the body portion 3a of the lower valve body 3, and the lower surface of the closing plate 5 and the closing A bulky harness connector 14 and an oil temperature sensor 12 are arranged in a marginal space around the plate 5, and the harness 13 is connected to the suction port 4 b so that the oil strainer 4 does not block the suction port 4 b by suction of hydraulic oil. Keep the specified distance, and set the harness 13
Is fixed to each harness bracket 15.

As described above, the control valve unit of the automatic transmission according to the embodiment has the following features.

The oil groove 3c formed on the lower surface of the lower valve body 2 and the closing plate 5 can achieve a multi-stage hydraulic circuit, so that a multi-stage automatic transmission such as a forward 5 speed, a reverse 1 speed or the like that requires a complicated oil path layout is required. It can be applied as a control valve unit of the machine.

Since a closing plate 5 having no oil passage and oil groove is provided on the lowermost surface on the rear side of the vehicle, a solenoid for electronic control is provided.
When laying out the electronic control parts such as 10 and 11 and the harness 13, a high degree of freedom in layout of the electronic control parts is secured while securing the ground clearance up to the oil pan 6 covering the unit.

That is, even if the thick harness connector 14 is arranged on the lower surface of the closing plate 5, the height above the ground can be kept high, and the harness 13 can be connected to the suction port 4 b of the oil strainer 4.
Can be arranged at a suitable position at a predetermined distance from the camera.

Plate mounting surface 3e is the strainer mounting surface when viewed from the ground
Formed at a position one step higher than 3d, that is, the strainer mounting surface 3d, which is the front side of the vehicle, which is relatively easy on the ground, is lowered, so that the strainer mounting surface 3d acts as a reinforcing rib,
Lower valve body 3 without adversely affecting ground clearance
Body rigidity can be increased.

The reason that the front side of the vehicle is relatively easy on the ground is
This is because, as described in the above description of the configuration, when the automatic transmission is mounted on the vehicle, the automatic transmission is mounted with a slight downward inclination toward the rear side of the vehicle.

Although the embodiments have been described with reference to the drawings, the specific configuration is not limited to the embodiments.

For example, in the embodiment, a preferred example in which the plate mounting surface 3e is formed at a position one step higher than the strainer mounting surface 3d when viewed from the ground is shown, but both mounting surfaces 3d and 3e may be the same surface. A surface having an opposite step may be used.

(Effect of the Invention) As described above, in the control valve unit of the automatic transmission according to the present invention, the means for providing the closing plate without the oil passage and the oil groove on the lowermost surface on the vehicle rear side of the lower valve body. In the control valve unit of an automatic transmission that can lay out complicated oil passages by increasing the number of hydraulic circuits, the advantage of ground clearance and the freedom of layout of the components arranged on the lower valve body lower surface are increased. The effect that both can be achieved is obtained.

[Brief description of the drawings]

FIG. 1 is a side view showing an automatic transmission to which a control valve unit according to an embodiment of the present invention is applied, FIG. 2 is a partially cutaway view showing the control valve unit according to the embodiment, and FIG. It is a bottom view which shows the control valve unit of the Example seen from the viewpoint. 1 Power train 2 Upper valve body 2a Body 2b Oil groove 3 Lower valve body 3a Body 3b, 3c Oil groove 3d Strainer mounting surface 3e Plate Mounting surface 4 Oil strainer 5 Closing plate 6 Oil pan

Claims (3)

(57) [Claims] 1. An upper valve body disposed at a lower portion of a power train and having an oil groove on a lower surface, provided in an oil-tight state on a lower surface of the upper valve body, and having an oil groove on an upper surface and a lower surface on a vehicle rear side. A lower valve body, an oil strainer provided on a strainer mounting surface on a lower surface of the lower valve body on the vehicle front side, and a plate mounting surface on a lower surface of the lower valve body on the vehicle rear side at a position rearward of the oil strainer. Oilway,
A control valve unit for an automatic transmission, comprising: a closing plate having no oil groove. 2. The control valve unit for an automatic transmission according to claim 1, wherein electronic control components are arranged on a lower surface of said closing plate. 3. The control valve unit for an automatic transmission according to claim 1, wherein the plate mounting surface is formed at a position higher than the strainer mounting surface when viewed from the ground.