JP3354048B2 - Solenoid valve device for automatic transmission - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solenoid valve device for an automatic transmission for mounting a solenoid valve used for hydraulic control of an automatic transmission to a valve body.

[0002]

2. Description of the Related Art In recent years, in hydraulic control of an automatic transmission mounted on a vehicle or the like, a method of electrically controlling a plurality of solenoid valves has been adopted in order to switch a plurality of shift valves. Each of these solenoids is mounted on the lower surface of the valve body while being restricted in space.

The above-described solenoid is generally formed integrally with a mounting bracket, and is mounted by bolting a fastening portion of the mounting bracket to a valve body. For this reason, a female screw for screwing a bolt is cut on the valve body side.
The bolting operation of the bolts as many as the bolts is required. That is, as the number of bolts increases, machining and assembling become more complicated, and more man-hours are required.

In order to increase space efficiency and to simplify machining and assembling work, Japanese Patent Application Laid-Open No. 2-278068 discloses a mounting bracket of the same shape fixed to the outer periphery of each of two adjacent solenoid valves. In a state where the fastening portions of the respective mounting brackets are overlapped with each other (in a state where they are vertically stacked in the thickness direction), they are fastened together by the same single bolt.

[0005]

However, in the above-mentioned prior art and other configurations for jointly fastening the upper and lower fastening portions, generally, the mounting order of the two solenoid valves is fixed, and the And reverse that order,
If the fastening portion is turned upside down, for example, there is a possibility that a seal member such as an O-ring fitted on the outer periphery of the valve portion of the solenoid valve may be damaged.

The reason for this is shown in FIGS. 11 and 12 (a).
This will be briefly described with reference to the schematic diagram of FIG.

FIG. 11 is a perspective view of a valve unit 1 constituted by a solenoid valve 2 and a mounting bracket 3. The solenoid valve 2 has a valve portion 5 in which a sealing member 4 such as an O-ring is fitted, while the mounting bracket 3 has two fastening portions 6 and 7 of which the fastening portion 6 is provided.
Are fastened together by bolts (not shown).

FIG. 12A shows a state in which two adjacent valve units A 1 and B 1 are fixed to bolt seats 9, 10 and 11 of a valve body 8 by bolts.
However, bolts are omitted. In addition, each component of each of the valve units A1 and B1 is distinguished by attaching A or B in front of each number shown in FIG.

FIG. 12A is a diagram showing a normal mounting state in which the motors are mounted in a normal order. That is, first, the valve portion A5 of the first valve unit A1 is inserted together with the sealing member A4 into a predetermined insertion position of the valve portion insertion hole 12 (see FIG. 11), and the first valve unit A1 is mounted at a predetermined mounting position. To place. Subsequently, similarly, the valve portion B5 of the second valve unit B1 is inserted together with the sealing member B4 into a predetermined insertion position of the valve portion insertion hole 12, and the second valve unit B1 is disposed at a predetermined mounting position. . At this time, the common fastening portion A6 of the first valve unit A1 is lowered, and
Are stacked with the common fastening portion B7 of the valve unit B1 facing upward. Finally, the fastening portions B6 and A7 are bolted to the bolt seats 9 and 11, respectively, and the common fastening portions A6 and B7 are jointly fastened to the bolt seat 10 with the same one bolt to complete the fixing.

By the way, the position L from the back surface of the fastening portions A6 and A7 of the first valve unit A1 to the center of the valve portion A5.
_A is set such that the center of the valve portion A5 coincides with the center of the valve portion insertion hole 12 on the valve body 8 side in the normal mounting state of FIG. Further, the same applies to the second valve unit B1, the position L _B from the rear surface of the fastening portion B6, B7 of the second valve unit B1 to the center of the valve unit B5, the mounting of the normal shown in FIG. 12 (a) In the state, the center of the valve portion B5 is set to coincide with the center of the valve portion insertion hole 12 on the valve body 8 side. Here, it should be noted that the second valve unit B1 realizes a regular mounting position in a state where the common fastening portion B7 is overlaid on the common fastening portion A6 of the first valve unit A1. It is a point.

Next, FIG. 12B shows a state in which the components are mounted in the reverse order of the normal order. That is, first, the valve portion B5 of the second valve unit B1 is inserted into the valve portion insertion hole 12 together with the seal member B4, and then the valve portion A5 of the first valve unit A1 is inserted together with the seal member A4 into the valve portion. It is inserted into the insertion hole 12. At this time, regarding the second valve unit B1, the fastening portion B6 and the fastening portion B7 are
Although the posture is not stable apart from the bolt seats 9 and 10,
If the valve part B5 is inserted following the valve part insertion hole 12, the insertion is possible without damaging the seal member B4. On the contrary, the first valve unit A
As for 1, there is a possibility that the seal member A4 may be damaged. That is, in the first valve unit A1, the insertion operation of the valve portion A5 is performed in a state where the common fastening portion A6 is on the common fastening portion B7 of the second valve unit B1. For this reason, the center C5 of the valve portion A5 is
2 is higher than the center C12. This difference in height becomes larger as the thickness of the common fastening portion B7 is larger. , But in practice insertion is possible. However, although the insertion is possible, the center C5 between the valve portion insertion hole C12 and the valve portion A5 is shifted, so that the gap between the inner periphery of the valve portion insertion hole 12 and the outer periphery of the valve portion A5 is narrow. And a wide part. Therefore, in the narrow portion, the seal member A4 protruding from the outer peripheral surface of the valve portion A5 may be scooped and damaged between the valve portion insertion hole 12 and the valve portion A5.

For the reasons described above, if the order in which the valve units are attached to the valve body 8 is reversed from the normal order, the seal member may be damaged.

In view of the above, the present invention inhibits the later mounting of the valve unit when the mounting order of the valve unit is reversed from the normal order, thereby reducing the loss of the number of assembly steps and preventing the seal member from being damaged. It is an object of the present invention to provide a solenoid valve device for an automatic transmission.

[0014]

According to a first aspect of the present invention, there is provided a plurality of valves in which a solenoid valve having a valve portion having a seal member fitted on an outer periphery thereof and a mounting bracket having a fastening portion are integrally formed. A plurality of valve units, each of the valve units being inserted into a predetermined insertion position of a valve body of the automatic transmission, and the fastening unit being bolted to connect the plurality of valve units to a predetermined position of the valve body. A solenoid valve device in an automatic transmission, which is fixed to an attachment position of the first and second valve units, the attachment brackets of a first valve unit and a second valve unit attached to the valve body adjacent to each other, As a fastening portion, a first common fastening portion and a second common fastening portion which are stacked on each other and fastened together by the same bolt are provided. At least one of the first and second common fastening portions has a regulating means, and the regulating means comprises a first valve unit in which the first and second valve units are in a regular order, a second valve unit, When allowing the first valve unit to be placed in the mounting position after the second valve unit is placed in the mounting position in reverse order, while allowing the valve units to be placed in the mounting position in the order of the valve units. At least the valve portion of the first valve unit is prohibited from being inserted into the valve body.

According to a second aspect of the present invention, the restricting means is a second claw projecting from a second predetermined position of the common fastening portion of the second valve unit, The predetermined position is the first position after the second valve unit is disposed with respect to the mounting position of the valve body, and before the tip of the valve portion of the first valve unit starts insertion into the valve body. And a position for engaging the common fastening portion to prevent the insertion operation.

According to a third aspect of the present invention, the restricting means is a first claw projecting from a first predetermined position of the common fastening portion of the first valve unit, and The predetermined position is the second position after the second valve unit is disposed with respect to the mounting position of the valve body, and before the tip of the valve portion of the first valve unit starts insertion into the valve body. And a position for engaging the common fastening portion to prevent the insertion operation.

[0017]

According to the first aspect of the present invention, when the order in which the first valve unit and the second valve unit are attached to the valve body is reversed from the normal one, the subsequent valve unit ( The first valve unit) can be prevented from being inserted into the valve body.
That is, since the insertion operation can be prevented before the erroneous assembly, it is possible to eliminate the loss of the number of assembly steps due to the erroneous assembly and to surely prevent the seal member from being damaged.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. <Embodiment 1> FIG. 1 shows a solenoid valve device in an automatic transmission according to the present invention.

FIG. 1 shows a state in which a first valve unit 10 and a second valve unit 20 constituting a solenoid valve device in an automatic transmission are mounted and fixed to a lower surface of a valve body 30 of the automatic transmission. It is a bottom view.

The first valve unit 10 comprises a solenoid valve 11 and a mounting bracket 12 integrated with each other. As shown in FIG. 2, which is a view taken along the line XX of FIG. Are bolted to respective bolt seats 31 and 32 of the valve body 30. 3 (a), 3 (b) and 3 (c) show the configuration of the first valve unit 10 as a single unit for reference. Here, the meaning of reference refers to the first valve unit 10 shown in these figures and the first valve unit 10 shown in FIG.
Although, the main configuration is almost the same, although the shape of the details is slightly different.

Referring to FIGS. 3A, 3B and 3C,
The configuration of the first valve unit 10 as a single item will be described. FIG. 3A is a view of FIG. 1 as viewed from the back side,
FIG. 2B is a diagram of FIG. 3A viewed from the left, and FIG. 3C is a diagram of FIG. 3A viewed from below. The solenoid valve 11 includes a rectangular parallelepiped electromagnetic device portion 13, a portion 15 of a cylindrical valve portion protruding from the electromagnetic device portion 13 (hereinafter simply referred to as a “valve portion 15”), and an outer peripheral surface of the valve portion 15. And a sealing member 16 such as an O-ring fitted into the formed annular groove 15a (see FIG. 3B). However, in FIG. 3B, the sealing member 16 is omitted. An oil passage 15b is formed at the center of the valve portion 15. On the other hand, the mounting bracket 12 has a box-shaped bracket body 17 and plate-shaped fastening portions 18 and 19 projecting from the bracket body 17 to the left and right in FIG. These are formed stepwise and parallel to each other, and each is provided with a through hole 18a, 19a formed of a long hole. Fastening parts 18, 19
As shown in FIG. 2, the fastening portion 19 of the
Together with the common fastening portion 29 of the mounting bracket 22 of the valve unit 20 of FIG.

As shown in FIG. 1, the second valve unit 10 comprises a solenoid valve 21 and a mounting bracket 22 integrated with each other.
3, each bolt seat 3 of the valve body 30
2 (see FIG. 2) and 33 (not shown). FIGS. 4A, 4B, and 4C show the configuration of the second valve unit 20 as a single unit for reference. Here, the meaning of reference is similar to the case of the first valve unit 10, in which the second valve unit 20 shown in these drawings is used.
Although the second valve unit 20 shown in FIG. 1 has a slightly different shape and the like, its main configuration is almost the same.

Referring to FIGS. 4A, 4B and 4C,
The configuration of the second valve unit 20 as a single product will be described. FIG. 4A corresponds to a view of FIG. 1 viewed from the back side,
FIG. 2B is a diagram of FIG. 3A viewed from the left, and FIG. 3C is a diagram of FIG. 3A viewed from below. The solenoid valve 21 includes a rectangular parallelepiped electromagnetic device portion 23 and a cylindrical valve portion 25 protruding from the electromagnetic device portion 23 (hereinafter simply referred to as a “valve portion 25”), similarly to the solenoid valve 11 described above. , An annular groove 25a formed on the outer peripheral surface of the valve portion 25
(See FIG. 4 (b)). However, in FIG.
6 is omitted. An oil passage 25b is formed at the center of the valve portion 25. On the other hand, the shape of the mounting bracket 22 is significantly different from the mounting bracket 12 described above. The mounting bracket 22 has a box-shaped bracket body 27 and plate-shaped fastening portions 28 and 29 projecting leftward from the bracket body 27 in FIG. These are formed stepwise in parallel with each other, and are provided with through-holes 28a and 29a each formed of a long hole. Fastening parts 28, 29
Of the above, as shown in FIG.
Together with the common fastening portion 19 on the valve unit 10 side.
The above-described mounting bracket 22 is different from the mounting bracket 1 described above.
The most different point from the second embodiment is that the mounting bracket 22 has a claw portion 29b as a restricting means which is a feature of the present invention in the common fastening portion 29. FIG. 4 shows the claw 29b.
It is formed so as to protrude on the back side in FIG. 1A, that is, on the front side of the common fastening portion 29 in FIG. The protruding height h (see FIG. 4C) is the first height h, as described later.
5 can be effectively engaged with the common fastening portion 19 on the valve unit 10 side, and the formation position is a second predetermined position shown in FIG. 5 described later.

Next, the first valve unit 1 having the above-described structure will be described.
0 and the second valve unit 20 in the normal order (first valve unit 10 first, second valve unit 20
The operation when attaching to the valve body 30 in (after)
The description will be made with reference to FIG.
Of the first valve unit 1
FIG.
This will be described with reference to FIG. A recess for mounting the first valve unit 10 and the second valve unit 20 is provided in the valve body 30 shown in FIG.
And a second relief 36. The valve body 30 further includes first and second valve units 1.
Valve part insertion holes 37 and 38 into which the respective valve parts 15 and 25 of 0 and 20 are inserted are formed.

In the following, for convenience of explanation, the description will be made with the upper, lower, left and right in FIG.

First, in order to mount the first valve unit 10, a position slightly above the position of the first valve unit 10 in FIG.
At the position above the inlet (upper end) of the valve portion insertion hole 37, the first valve unit 10 is dropped into the relief 35, and the fastening portion 18, while lowering the valve portion 15 following the valve portion insertion hole 37, 19 are attached to the bolt seats 31 and 32, respectively.
And the valve part 15 is inserted to the end. As a result, the valve section 15 is inserted into the valve section insertion hole 37 of the valve body 30.
At a predetermined insertion position. Accordingly, the entire first valve unit 10 is disposed at a predetermined mounting position.

Subsequently, the second valve unit 20 is
With the fastening portions 28 and 29 upright, a position slightly above the position of the second valve unit 20 in FIG. 1, that is, the tip (lower end) of the valve portion 25 is positioned at the entrance (upper end) of the valve insertion hole 38. Above the second valve unit 2
0 is dropped into the relief 36, the valve portion 25 is lowered following the valve portion insertion hole 38, and the valve portion 25 is inserted to the end. Then, the fastening portions 28 and 29 that have been set up are returned to a horizontal position by rotating them around the valve portion 25, and the back surfaces of the fastening portions 28 and 29 are brought into contact with the upper surfaces of the bolt seats 33 and 32, respectively. Thereby, the valve portion 25 is connected to the valve body 3.
0 can be inserted into the predetermined insertion position of the valve portion insertion hole 38. Accordingly, the entire second valve unit 20 is arranged at a predetermined mounting position. At this time, as shown in FIG. 2, the common fastening portions 19 and 29 are stacked with the common fastening portion 19 below and the common fastening portion 29 above.

Subsequently, the fastening portion 1 is fixed by bolts 41 and 43.
8 and 28 are fixed to the bolt seats 31 and 33, respectively.
2, the first and second valve units 10, 2
Mounting and fixing of 0 are completed.

At this time, the claw portion 29b of the common fastening portion 29 of the second valve unit 20 is
And the second valve unit 20 is not prevented from being disposed in the mounting position. That is, the first and second valve units 10 and 20 are allowed to be arranged at the mounting position.

The above is the mounting in the regular order.

Next, the operation in the case where the mounting order is the reverse of the normal order will be described with reference to FIG.

First, when the second valve unit 20 is mounted, the second valve unit 20 can be disposed at the mounting position almost without any trouble as in the case of the above-described regular order. However, in this case, unlike the case of the normal order, the common fastening portion 19 on the first valve unit 10 side is provided on the back side of the common fastening portion 29.
Since there is no gap, a gap corresponding to the thickness of the common fastening portion 19 may be formed between the back surface of the common fastening portion 29 and the upper surface of the bolt seat 32. However, this is not particularly troublesome.

Subsequently, as in the case of the normal order described above, the position slightly above the position of the first valve unit 10 in FIG. Above the entrance (upper end) of the
Of the valve unit 10 into the relief 35
When trying to lower the valve unit 10, the common fastening portion 19 of the first valve unit 10 is caught (engaged) with the claw portion 29 b of the common fastening portion 29 of the second valve unit 20, and The other fastening portion 18 on the first valve unit 10 side also holds the bolt seat 3 higher than the bolt seat 31 while riding on the bank 39 of the valve body 30.
1 Cannot contact the upper surface. That is, before the tip of the valve portion 15 on the first valve unit 10 side starts to be inserted into the valve portion insertion hole 37 of the valve body 30,
The claw portion 29b engages with the common fastening portion 19 to inhibit the insertion operation. One of the features of the present invention is that the claw portion 29b is formed at a position where the insertion operation can be prohibited.

By prohibiting the insertion operation of the first valve unit 10, although the second valve unit 20 is erroneously assembled, the erroneous assembly of the first valve unit 10 is prevented, and the assembly is performed. While reducing man-hour loss,
Sealing member 16 associated with incorrect assembly of valve unit 10
Can be reliably prevented beforehand.

In the above embodiment, the claw portion 29b
Is a mounting bracket 22 on the second valve unit 20 side.
Of the mounting bracket 12 on the first valve unit 10 side, it is also possible to provide it as a claw 19b (not shown). However, in this case, the claw portion 19b is bent toward the valve body 30 opposite to the claw portion 29b.
The operation and effect are almost the same as those of the claw portion 29.

Another feature of the present invention is that correction of erroneous assembly is extremely simple.

That is, in the case where the second valve unit 20 is mounted first by mistake, the fastening portions 28 and 29 are mounted around the valve portion 25 without removing the second valve unit 20. For example, it is rotated by about 45 degrees and lifted to form a sufficient gap between the fastening portion 29 and the upper surface of the bolt seat 32. Thereby, the first valve unit 10 can be mounted in the same manner as when mounting in the regular order. After the attachment of the first valve unit 10, the fastening parts 28 and 29 of the second valve unit 20 can be returned to a horizontal state, whereby the regular attachment is completed. in this way,
One of the reasons for easy modification is that the second valve unit 20
Unlike the fastening portions 18 and 19 of the mounting bracket 12 of the first valve unit 10, both of the fastening portions 28 and 29 of the mounting bracket 22 are disposed on one side (the right side in FIG. 5) with respect to the valve portion 25. Can be raised. For this reason,
The fastening portions 28 and 29 can be rotated while the valve portion 25 remains inserted in the valve portion insertion hole 38.

FIG. 6 shows a hydraulic circuit to which the first and second valve units 10 and 20 are actually mounted. However, the figure is an excerpt.

For example, in a hydraulic circuit of a four-speed automatic transmission, the first valve unit 10 includes a 1-2 shift valve 10A, a 3-4 shift valve 10B, and the second valve unit 20 includes a 2-shift valve 10A. Used to operate the three shift valve 20A. That is, by turning on the solenoid valve 11 of the first valve unit 10, the left half of the 1-2 shift valve 10A and the 3-4 shift valve 1
The right half state of OB is realized, while the OFF state of the solenoid valve 11 realizes the right half state of the 1-2 shift valve 10A and the left half state of the 3-4 shift valve 10B. Further, when the solenoid valve 21 of the second valve unit 20 is turned on, the 2-3 shift valve 2
The state of the right half of 0A is realized, and the state of the left half of the 2-3 shift valve 20A is realized by OFF.

The above-described valve body 30 and the shift valve inserted therein have some other characteristic features. This will be briefly described below.

First, FIGS. 7 (a), 7 (b), and 7 (c) show a case where the casting gate 30a of the valve body 30 is cut off from the valve body 30 by pressing. It is to prevent. FIG. 7 (b)
Shows the operation when removing the gate g by pressing,
(A) is a view taken along line AA, and (c) is a view corresponding to the conventional view (b).

As shown in FIG. 7A, the valve body 3
In the case where 0 is manufactured by casting, a gate g for pouring molten metal remains in the valve body 30 after casting. Conventionally, the gate g has been cut by a trimming press as shown in FIG. That is, the lower blade Pd of the trimming press is applied to the boundary between the valve body 30 and the gate g, the upper blade Pu is pulled down in the direction of arrow F, and the upper blade Pu and the lower blade Pd are pulled down.
The gate g was sheared with d. At this time, a notch K occurred near the boundary in the valve body 30.

To prevent this, the gate g in FIG.
If the height is increased, the molten metal may directly hit the oil passage 30a of the valve body 30, and defects such as poor quality due to turbulence and large erosion of the groove may occur. On the other hand, when the gate g is lowered, there is a problem that the thickness of the valve body increases accordingly.

Therefore, a rib 30L is provided on the valve body 30 at the boundary with the gate g, and the lower blade Pb is
Against the stepped portion between 0L and gate g, shifting the parting height h ₁ of the valve body 30 from the gate g. That is, by inserting the lower blade Pb inside from the end of the substantial product,
It has become possible to prevent lack of meat.

This technique can be easily applied not only to the valve body 30 but also to other cast products.

Second, the one shown in FIGS. 8 (a) and 8 (b) prevents the upper valve body 30A and the lower valve body 30B from being loosened when the bolt B is used to fasten the upper valve body 30A and the lower valve body 30B via the gasket 71. It is a configuration for.

FIG. 8A shows a conventional example, in which a through hole 72 is formed in the upper valve body 30A side, a female screw 73 is formed in the lower valve body 30B side, and the gasket 7 is interposed therebetween.
The bolt is fastened with 1 in between. In this case, the length of the portion where the bolt B is screwed to the female screw 73 is the screw length B _1.
Next, the grip length to be used for clamping of the gasket 71 is B _2.

[0048] By the way, if the bolt B is a force to tighten the gasket 71 is the same, the more grip length B ₂ is long, the bolt B is difficult to loose. This is because the longer the grip length of the bolt B, the longer the gasket 71
This is because the amount of sag is reduced, and the loosening of the bolt B is correspondingly reduced.

[0049] As a measure to increase the grip length B ₂ of the bolt B is or thickened upper valve body 30A side, it is conceivable which pinch spacer, they or increase the weight, cost There is a possibility that the number may increase, and this is not necessarily a preferable measure.

[0050] Therefore, as shown in FIG. 8 (b), by increasing the grip length B _2, while suppressing increase in weight and cost, and to prevent the loosening of the bolts B. That is, a bolt hole 75 is cast out in the upper part of the lower valve body 30B side, and a female screw 73 is cut in the remaining portion. using, the same as the threaded length B ₁ represents prior art and, grip length B ₂ was such that bolt hole longer by. Thereby, loosening of the bolt can be effectively prevented while minimizing weight increase and cost increase.

Third, to facilitate identification of similar plungers in the valve.

An automatic transmission having a lock-up mechanism of a torque converter has a lock-up relay valve for switching between ON and OFF. The lock-up relay valve (hereinafter simply referred to as “valve”) V has a spool S, a plunger P, and a spring B as main components.

Here, for example, when the valve V ₀ is currently constructed by combining the spool S ₀ and the plunger P ₀ (hereinafter, referred to as “V ₀ = S ₀ + P ₀ ”), at the will as it becomes possible to configure different valve V ₁ with a spool S ₁ and the plunger P ₁ (hereinafter indicated as _{"V 1 = S 1 + P 1} ). by the way, both valves V
₀ , V ₁ plungers P ₀ , P ₁ are similar,
These may be erroneously assembled to the spools S ₀ and S ₁ (hereinafter referred to as “erroneous assembly patterns”). That is, there is a possibility that V _X = S ₀ + P ₁ or V _X = S ₁ + P ₀ . Here, V _X represents an incorrect combination.

Conventionally, as shown in FIG. 9A, similar grooves are formed by forming a groove C in a plunger P and changing the width and the number of the grooves C depending on the plunger P in order to prevent such a problem. The plunger P was distinguished.

However, the diameter D of the small diameter portion of the plunger P is
Is large (for example, about 6 mm), this measure can be adopted. However, as shown in FIG. 9B, when the diameter d of the small diameter portion is small (for example, about 3 mm),
The above measures cannot be adopted for strength reasons.

Therefore, two similar plungers P ₀ ,
To distinguish P _1, and the would affect the length of both (P _0> P _1). However, when the difference between the lengths is small, the functional tester may not be able to reliably detect the difference even when the assembly is erroneously performed. This is shown in the upper part of FIG.

(V ₁ = S ₁ + P ₁ ), (V ₀ = S ₀
+ P ₀ ) indicates a normal combination.
The judgment by the functional tester is passed.

In the case of (V _X = S ₁ + P ₀ ), for example, when lock-up is ON (right half), 3 of M ₁ shown in FIG.
Since the opening amount of the valve at the location is small (for example, 0.3 mm at the center value), it is conceivable that the ON pressure and the OFF pressure are not sufficient, but depending on the variation, both the ON pressure and the OFF pressure are generated. , The tester may pass.

In the case of (V _X = S ₀ + P ₀ ), when the lock-up is OFF (left half), the seal width of M ₂ shown in FIG.
It is conceivable that the pressure is not sufficient, but depending on the variation, the SEC pressure may be generated and the tester may pass.

That is, in the regular assembling pattern, the tester passes, of course,
In some of the erroneous assembly patterns, the tester was sometimes passed. Therefore, in the present invention, in the case of an erroneous assembly pattern, the tester is rejected without fail, as shown in FIG.
The valve configuration was as shown in the right half of (b). In addition,
FIG. 9B shows the valve V ₀ (spool S ₀ , plunger P ₀ ) in the left half and the valve V ⁺ (spool S ⁺ , plunger P ⁻ ) according to the present invention in the right half. Show. That is, the spool S ⁺ and the plunger P ^- are used instead of the conventional spool S ₁ and the plunger P ₁ .

[0061] Plunger P _0, P ^-, since the diameter d of the small diameter portion as described above is small (e.g. 3mm) and smaller, can not be provided with grooves C for identification, the plunger P ^-
Length L ^- and shorter than the length L ₀ of the plunger P _0, allowed the identification during assembly. Further, the difference between the lengths L ₀ and L ⁻ is made large (for example, 2 mm), so that even if erroneous assembly occurs, detection by the functional tester is possible, as described later. However, the plunger P ^- Shortened minute length of, by providing the convex portion T ⁺ the spool S ^+, and so there is no change in performance.

The lower part of FIG. 10 shows an assembly pattern according to the present invention.

(V ⁺ = S ⁺ + P ⁻ ) and (V ₀ = S
₀ + P ₀ ) are all regular assembling patterns and pass the tester. In any case, no change in the valve function accompanying the shape change is observed.

In the case of (V _X = S ⁺ + P ₀ ), when the lock-up is ON (right half), the valve does not switch sufficiently, so that the COOOLER pressure, ON pressure, and OFF pressure become abnormal and the tester fails. Becomes

[0065] In _{addition, (V X = S 0 +} P -) For, when the lock-up OFF (left half), the gap shown M ₃ parts median example, 1.8 mm, and the not out SEC pressure Therefore, the tester is rejected.

In other words, the tester passes the normal assembly pattern, while the tester rejects the incorrect assembly pattern.

[0067] In the above description, the plunger P ^- length L
^- The it was shorter than the length L ₀ of the plunger P _0,
Alternatively, the plunger P ^- may be set longer than the length L ⁺ a plunger L ₀ (not shown). In this case, instead of the convex portion T ⁺ in the right half of FIG.
^A concave portion T ^- is formed in ⁺ . Thereby, the function as the valve does not change.

[0068] That is, in the present invention, with respect to the plunger P _0, the plunger P ⁺ or plunger P ^- the length of,
The length is set to be short or long enough to be reliably detected by the function tester in the case of erroneous assembly, and the substantial length on the spool side is set long or short accordingly to prevent a change in function.

[Brief description of the drawings]

FIG. 1 is a bottom view showing a state in which first and second valve units are mounted in proper positions in a proper order with respect to a valve body.

FIG. 2 is a view taken along line XX of FIG. 1;

FIG. 3A is a top view illustrating a first valve unit as a single item. (B) is the right view. (C) is the downward view.

FIG. 4A is a top view showing a second valve unit as a single item. (B) is the right view. (C) is the downward view.

FIG. 5 is a bottom view showing an attempt to attach the first valve unit after attaching the second valve unit by mistake.

FIG. 6 shows first and second hydraulic circuits in an automatic transmission.
The figure which shows the example of use of the valve unit of FIG.

FIG. 7A is a bottom view of a valve body having a rib.
(B) is a diagram showing conventional gate trimming. (C) is a diagram showing trimming of the gate according to the present embodiment.

FIG. 8 (a) is a view showing conventional tightening of a valve body by a bolt. FIG. 3B is a diagram illustrating the tightening of the valve body by bolts according to the embodiment.

FIG. 9A is a diagram showing a conventional plunger identification.
The left half of (b) shows the combination of the conventional plunger and valve. The right half of (b) shows the combination of the plunger and the valve according to the present embodiment.

FIG. 10 is a diagram showing a comparison between a conventional example and the present embodiment.

FIG. 11 is a perspective view schematically showing a configuration of a conventional valve unit.

FIG. 12 (a) is a schematic view showing that first and second conventional valve units are attached to a valve body in a proper order in a proper order. (B) is a bottom view showing a conventional case where the first valve unit is erroneously mounted after the second valve unit is mounted.

[Explanation of symbols]

 10 First valve unit 11, 21 Solenoid valve 12, 22 Mounting bracket 13, 23 Electromagnetic device part 15, 25 Valve part 16, 26 Seal member (O-ring) 17, 27 Bracket body 18, 28 Fastening part 19, 29 Common Fastening part 20 Second valve unit 29b Restriction means, claw part 30 Valve body 31, 32 Bolt seat 35, 36 Relief 37, 38 Valve part insertion hole

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Akira Ishibashi 10 Takane, Fujii-machi, Anjo, Aichi Prefecture Inside Aisin AW Co., Ltd. (72) Inventor Yasuhiro Kamei 10 Takane, Fujii-machi, Anjo, Aichi Prefecture Aisin・ Within AW Co., Ltd.・ AW Co., Ltd. (72) Inventor Hideo Tomomatsu 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Corporation (72) Inventor Koji Taniguchi 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Corporation ( 72) Inventor Kunihiro Iwazuki 1 Toyota Town, Toyota City, Aichi Prefecture Inside Toyota Motor Corporation (72) Invention Toru Matsubara 1 Toyota Town, Toyota City, Aichi Prefecture Inside Toyota Motor Corporation (56) References JP-A-5-99361 (JP, A) JP-A-5-164228 (JP, A) JP-A-2-278068 ( JP, A) JP-A-8-159281 (JP, A) JP-A 62-39050 (JP, U) JP-A 62-146039 (JP, U) JP-A 6-61600 (JP, U) (58) ) Surveyed field (Int.Cl. ⁷ , DB name) F16H 59/00-61/12 F16H 61/16-61/36 F16H 63/00-63/48 F16K 27/00-27/12

Claims (3)

(57) [Claims] 1. A plurality of valve units each integrally comprising a solenoid valve having a valve portion having a seal member fitted on an outer periphery thereof, and a mounting bracket having a fastening portion. In the automatic transmission, the plurality of valve units are fixed to predetermined mounting positions of the valve body by bolting the fastening portion while being inserted into a predetermined insertion position of the valve body of the automatic transmission. In the solenoid valve device, the respective mounting brackets of a first valve unit and a second valve unit which are mounted adjacent to each other on the valve body are overlapped with each other as the fastening portion, and are the same. It has a first common fastening portion and a second common fastening portion that are jointly fastened by bolts, and at least one of the first and second common fastening portions is used. The other has a regulating means, and the regulating means is arranged at the mounting position in the order of the first valve unit and the second valve unit in which the first and second valve units are in a regular order. On the other hand, when the first valve unit is to be placed in the mounting position after the second valve unit in the reverse order is placed in the mounting position, at least the valve section of the first valve unit is allowed. A solenoid valve device for an automatic transmission, wherein the solenoid valve device is prohibited from being inserted into the valve body. 2. The second valve unit according to claim 2, wherein said regulating means projects from a second predetermined position of said common fastening portion of said second valve unit.
Wherein the second predetermined position is the position after the second valve unit is disposed with respect to the mounting position of the valve body, and the tip of the valve portion of the first valve unit is positioned relative to the valve body. The solenoid valve device for an automatic transmission according to claim 1, wherein before the insertion is started, the solenoid valve device is at a position where it engages with the first common fastening portion to prevent the insertion operation. 3. The first valve unit further comprising: a first valve unit protrudingly provided at a first predetermined position of the common fastening portion of the first valve unit.
Wherein the first predetermined position is located after the second valve unit is disposed with respect to the mounting position of the valve body, and the tip of the valve portion of the first valve unit is positioned relative to the valve body. The solenoid valve device for an automatic transmission according to claim 1, wherein before the insertion is started, the solenoid valve device is at a position where it engages with the second common fastening portion to prevent the insertion operation.