JP2001280457A - Control valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control valve wherein a replacement work of components accommodated in a valve chamber is easy to carry out after the complete assembly of the control valve and a holding member which prevent coming-out of the components is prevented dependably from falling during transportation without causing a rise in cost. SOLUTION: A spool 8 and a return spring 9 are accommodated in the valve chamber 7 opening towards a valve body 1 and are prevented from being coming out by an anti-pullout plate 10 which is inserted on the outside surface of the valve body 1. In addition, the anti-pullout plate 10 is prevented from coming out from the valve body 1 by an oil strainer 15. With the oil strainer 15 being off-mounted during a characteristic performance test or an adjustment work of the control valve, the replacement work for the return spring 9 and so on can easily be performed by fitting or unfitting the anti-pullout plate 10. Further, the falling-off of the anti-pullout plate 10 can be prevented during the transportation of the control valve without using any additional anti-pullout member.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control valve used for, for example, an automatic transmission for an automobile.

[0002]

2. Description of the Related Art Conventionally, a control valve has been used in an automobile for controlling the hydraulic pressure of an automatic transmission for an automobile. This type of control valve is a collective valve equipped with a plurality of types of valves.Generally, a plurality of divided valve bodies formed by die casting are superimposed and formed in advance on the connecting surface of each valve body. In general, an oil passage is formed by the set grooves.

FIG. 4 is a sectional view of an essential part showing an example of such a control valve. A valve body 1 is overlapped with a separate plate 2 interposed therebetween, and is connected to each other by bolts 3. And a second valve body 5. A plurality of grooves 6 are formed on the coupling surface side of the first and second valve bodies 4 and 5, respectively, and closed by the separate plate 2 to secure an oil passage in the valve body 1. . First valve body 4
A valve chamber 7 communicating with the groove 6 is open on the outer peripheral surface of the valve chamber 7. A spool 8 and a return spring 9 are housed in the valve chamber 7, and are connected to the first side at the opening side of the valve chamber 7.
Is prevented from falling out of the valve chamber 7 by a stopper plate 10 which is inserted into the valve body 4 and crosses the valve chamber 7. The retaining plate 10 is a metal plate having one end 10a bent in a substantially L-shape, and the one end 10a is accommodated between the coupling surface side of the first valve body 4 and the separate plate 2. This prevents the first valve body 4 from falling off.

The spool 8 switches the flow of hydraulic oil in the valve chamber 7 by moving according to the balance between the axial thrust applied to the pressure receiving portion (land portion) by the hydraulic pressure and the spring load of the return spring 9. In the illustrated control valve, the valve body 1
A hydraulic control valve 11 is constituted by the (first valve body 4), the spool 8, the return spring 9, and the retaining plate 10.

[0005]

However, in the above-mentioned control valve, once it has been assembled, the retaining plate 10 cannot be easily removed. For this reason, in order to ensure high control characteristics of the control valve, a count component is set in a housing component such as the return spring 9 in the valve chamber 7 to adjust the hydraulic control characteristics in the assembled state, and When the return spring 9 and the like are appropriately replaced as needed, the replacement operation is complicated and workability is poor.

Of course, in order to facilitate such replacement work,
For example, as shown in FIG. 5, the retaining plate 10 may be attached to the valve body 1 from the front side of the first valve body. However, in this case, there are the following problems. That is, a special component for preventing the retaining plate 10 from falling off after the assembly is required, and the cost of the control valve is increased. Also, in order to avoid the addition of dedicated parts, as shown in FIG.
The counterpart component 100 such as the AT case on the vehicle body to which the control valve is mounted may be provided with the falling-off preventing portion 101 of the retaining plate 10. In this case, during the transportation before the control valve is mounted on the vehicle body side. However, there is a problem that it becomes impossible to prevent the retaining plate 10 from falling off.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and it is easy to replace components housed in a valve chamber, and it is possible to remove a holding member during shipping without increasing costs. It is an object of the present invention to provide a control valve that can surely prevent the control valve.

[0008]

According to an aspect of the present invention, there is provided a control valve having a plurality of valves including a specific valve, wherein the specific valve is provided with another valve. Valve body shared with other valves,
A housing component housed in the valve chamber that opens to the valve body, and a holding member attached to the opening side of the valve chamber for preventing the housing component from falling out of the valve chamber;
In a control valve in which the housing component is replaced as necessary in a pressure control characteristic inspection process, the holding member is attached to the valve body from the front side, and the control member is pulled out of the holding member from the valve body. It is configured to be prevented by specific components that can be assembled to the valve body after the inspection step.

[0009] In this configuration, in the pressure control characteristic inspection process, the holding member can be independently attached and detached by setting the specific component in a non-assembled state, and the specific component is assembled after the inspection process is completed. Accordingly, during the shipping, the specific components in the assembled state can surely prevent the holding member from falling off from the valve body.

Further, in the invention according to claim 2, in the configuration in which the valve body forms a fluid passage communicating with the valve chamber of each valve, the specific valve is provided by the specific component to the holding member. Is disposed at a place where the escape from the valve body is prevented.

In this configuration, a specific component that can be assembled to the valve body after the inspection step can be shared with another control valve having a valve body of a different shape.

Further, in the invention according to claim 3, the valve body has a hierarchical structure composed of a plurality of members, and the specific valve is provided on a layer of the valve body on a side where the component is mounted. It was arranged.

Further, in the invention according to claim 4, the component is an oil strainer.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a partial cross-sectional view along AA of FIG. 2 showing a main part of a control valve according to the present invention.

This control valve is used for controlling the hydraulic pressure of an automatic transmission for an automobile, similarly to the control valve shown in the prior art, and is overlapped with a separate plate 2 interposed therebetween and connected to each other by bolts 3. The valve body 1 includes a first valve body 4 and a second valve body 5.

Also in the present embodiment, a valve chamber 7 which is open to the outer periphery is provided at a predetermined position of the first valve body 4, and a spool 8 and a return spring 9 are housed therein, and these are accommodated in the main body. The retaining plate 10, which is a holding member of the present invention, prevents the first valve body 4 from coming off, thereby constituting a hydraulic control valve 11. The hydraulic control valve 11 is a specific valve according to the present invention, and in the step of checking the pressure control characteristics after the control valve is assembled, the return spring 9 is used as necessary in the same manner as described in the related art.
The control characteristics of the control valve can be adjusted by exchanging with the other count parts prepared in advance. Further, the retaining plate 10 is inserted from the surface side of the first valve body 4 so as to cross the valve chamber 7, and the one end 10 a is exposed on the surface side of the first valve body 4 so that Insertion and removal are possible on the front side of the valve body 4.

As shown in FIG. 3, an oil strainer 15 and a solenoid assembly 16 which constitutes a plurality of solenoid valves together with the first valve body 4 are provided on the front side of the first valve body 4.・ ・ Is assembled. The oil strainer 15 is a member for removing dust and the like contained in the hydraulic oil when pumping hydraulic oil to be supplied to the hydraulic circuit in the valve body 1 from the oil pan when the control valve is used. That is, the oil strainer 15
Is a specific component in the present invention, and is a component that can be assembled to the valve body 1 (first valve body 4) after the above-described pressure control characteristic inspection process. The harnesses 17 extending from each of the solenoid assemblies 16 are combined into one, and a connector 18 having a plurality of connection terminals corresponding to each of the harnesses 17 is provided at the tip. I have. On the other hand, the above-mentioned hydraulic control valve 11 is arranged at a mounting position of the oil strainer 15 as shown in FIG. Thus, the retaining plate 10 is prevented from moving more than a predetermined amount in the extracting direction A (see FIG. 1) by contacting the oil strainer 15. That is, the first valve body 4
Is prevented from exiting.

In the control valve having the above-described configuration, in the pressure control characteristic inspection step of adjusting the hydraulic control characteristic in the assembled state, the retaining plate 10 is independently inserted and removed by keeping the oil strainer 15 in the non-assembled state. can do. Therefore, even when the return spring 9 needs to be replaced in the inspection process, the replacement operation can be easily performed, and the cost can be reduced by improving the work efficiency. In addition, the oil strainer 15 is assembled after the completion of the inspection step, so that the retaining plate 10 can be reliably prevented from dropping off from the valve body 1 (first valve body 4) during the shipment of the control valve. Can be. Therefore, it is not necessary to newly add a component only for preventing the retaining plate 10 from falling off, and the cost can be reduced.

In the present embodiment, the drop-off of the retaining plate 10 is prevented by the oil strainer 15 attached to the first valve body 4 side. As long as the parts can be assembled to the valve body 1 later, other parts may be used to prevent the retaining plate 10 from falling off. For example, if the first valve body 4 has a harness clip for fixing the extension of the harness 17 of the solenoid assembly 16 described above, the harness clip is used to prevent the harness clip. Is also good. Oil strainer 15
Is in a state of being assembled to the valve body 1,
Although a case where a gap exists between the lower surface and one end 10a of the retaining plate 10 is shown, a configuration in which no gap is formed between the two may be used.

Further, by setting the position of the hydraulic control valve 11 in the first valve body 4 to the mounting position of the oil strainer 15 in advance, the oil strainer 1
Since the retaining plate 10 prevents the retaining plate 10 from coming off, the oil strainer 15 can be used in common with another control valve having a different shape of the valve body 1 from that described above. Therefore, even if the design change of the control valve occurs, the oil strainer 15 can be used as it is, so that the cost required for the design change of the control valve can be minimized.

In the present embodiment, the control valve for adjusting the hydraulic control characteristics in the assembled state by replacing the return spring 9 has been described. In a configuration in which other accommodation components such as spacers are present in the chamber 7, the same effects as those of the present embodiment can be obtained even if the exchange is performed by exchanging those accommodation components. Also,
The same applies to the case where the hydraulic control valve 11 has a poppet type valve body other than the spool 8. Although the valve body 1 has a hierarchical structure constituted by the first valve body 4 and the second valve body 5, the valve body 1 is a single member having no hierarchical structure. The same effect can be obtained in a certain control valve by using the present invention.

[0022]

As described above, in the present invention,
Since the holding member can be attached and detached alone in the pressure control characteristic inspection process, it is easy to replace the housing component housed in the valve chamber in the inspection process. As a result, it is possible to reduce costs by improving work efficiency. In addition, during the shipment, since the specific components in the assembled state reliably prevent the holding member from falling off from the valve body, the control valve is provided with other unnecessary parts for preventing falling off. It is not necessary, and it is possible to reliably prevent the holding member from falling off during shipping, without increasing the cost.

Further, a specific component that can be assembled to the valve body after the inspection step can be shared with another control valve having a valve body that forms a different pressure circuit. Therefore, even when the design of the control valve is changed, the cost required for the change can be minimized.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view along AA of FIG. 2 showing one embodiment of the present invention.

FIG. 2 is a main part plan view of the control valve, showing a state where a part of the oil strainer is cut open.

FIG. 3 is an exploded perspective view showing a schematic configuration of a control valve.

FIG. 4 is a sectional view of a main part of a control valve showing a conventional technique.

FIG. 5 is a sectional view of a main part of a control valve showing another conventional technique.

[Explanation of symbols]

 Reference Signs List 1 valve body 4 first valve body 5 second valve body 7 valve chamber 8 spool (housing part) 9 return spring (housing part) 10 retaining plate (holding member) 11 hydraulic control valve (specific valve) 15 oil Strainer (specific components)

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Sou Yokoyama 1-1-1 Showa-cho, Kariya-shi, Aichi F-Term in Denso Co., Ltd. (Reference) 3H051 AA10 BB03 BB10 CC11 CC13 FF07 FF15 3J063 AA02 AC04 BA01 BA04 BA07 CC12 CD70 3J552 MA01 NA01 PA60 PA64 QA41B 4D064 AA23 BM21 BM34

Claims (4)

[Claims] 1. A control valve comprising a plurality of valves including a specific valve, wherein the specific valve comprises:
A valve body shared with another valve, a housing component housed in a valve chamber opening to the valve body, and a holding member attached to the opening side of the valve chamber for preventing the housing component from falling out of the valve chamber And a control valve in which the housing component is replaced as necessary in a pressure control characteristic inspection process, wherein the holding member is attached to the valve body from the front surface side, and the holding member is removed from the valve body. A control valve, wherein the control valve is configured and prevented by specific components that can be assembled to the valve body after the inspection step. 2. In the configuration in which the valve body forms a fluid path communicating with the valve chambers of the respective valves, the specific component prevents the retaining member from coming off the valve body by the specific component. The control valve according to claim 1, wherein the control valve is disposed at a predetermined position. 3. The valve body according to claim 2, wherein the valve body has a hierarchical structure including a plurality of members, and the specific valve is arranged on a layer of the valve body on a side on which the component is mounted. Control valve as described. 4. The control valve according to claim 1, wherein the component is an oil strainer.