JPH038850Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" This invention relates to a mounting structure for a plunger type hydraulic solenoid valve installed in an automatic transmission for an automobile.

"Prior Art" As a conventional mounting structure, there is one shown in FIG. 2, for example.

1 is a solenoid valve, 2 is a valve body, and the solenoid valve 1 is screwed into the valve body 2, and hydraulic sealing is performed by an O-ring 3 placed on the tightening surfaces of both.

In addition, 4 is a plunger, 5 is a sheet member, 5a
5b is an orifice hole opening in the seat surface 5a, and 6 is a core fitted and fixed to the sheet member 5. Reference numeral 7 denotes a guide member integrally connected to the sheet member 5, which includes a needle portion 4a at the tip of the plunger 4.
to guide you. 8 is a coil installed in the bobbin 9, 10 is a spring provided between the plunger 4 and the core 6, 11 is a plurality of oil holes bored in the inner cylindrical portion of the seat member 5, and 12 is a seat. A plurality of oil holes are formed in the outer cylindrical portion of the member 5.

The control oil flows through the orifice hole 5b, as shown by the arrow, when the plunger 4 moves upward in FIG.
The oil flows into an oil pan (not shown) through oil holes 11 and 12.

Furthermore, a mounting structure as shown in FIG. 3, for example, is also known. In this example, the hydraulic circuit connection part A between the solenoid valve 1 and the valve body 2 is not screwed in, but is loosely fitted into each other, and hydraulic sealing is performed by an O-ring 15. . On the other hand, a mounting plate 16 is integrally connected to the solenoid valve 1 by welding or the like.
It was fastened to the valve body 2 with a bolt 17 with its surface in contact with the valve body 2.

``Problem to be solved by the invention'' However, in such a conventional mounting structure, the solenoid valve 1 and the valve body 2 are rigidly connected and have a structure in which they are in direct contact. When excited and driven at 10Hz, the end of the plunger 4 periodically collides with the seat surface 5a and the end surface 6a of the core 6, and the vibrations generated at that time propagate to the transmission case via the valve body 2, where a loud noise is generated. There was a problem that the light was radiated to the outside.

This idea was created by focusing on these conventional problems, and aims to solve the above problems by creating a mounting structure that does not rigidly connect or directly contact the solenoid valve body and the valve body body. There is.

``Means for solving the problem'' This idea uses anti-vibration rubber at the fixed position attachment part of the solenoid valve to the valve body, and an elastic ring at the hydraulic circuit connecting part between the solenoid valve and the valve body. In a plunger-type solenoid valve mounting structure that is installed in the case of an automobile automatic transmission with an elastic member interposed between the main bodies and controls hydraulic pressure, a mounting plate is provided that protrudes from the solenoid valve to the side. The inner periphery of the plurality of cylindrical vibration-proof rubbers is restrained and fixed to the valve body at a position apart from the valve body by a fixing member to the valve body.
The mounting plate has a plurality of substantial holes, the outer periphery of the vibration isolating rubber is provided with a groove surrounding the outer periphery, and each hole of the mounting plate is fitted with a groove on the outer periphery of the vibration isolating rubber, The hydraulic circuit connection between the solenoid valve and valve body is
This is a solenoid valve mounting structure in which the solenoid valve and the valve body are sealed in a non-contact manner by an elastic ring, and the solenoid valve is elastically supported in a floating manner via vibration-proof rubber and the elastic ring.

"Example" This invention will be described below based on the drawings. Figure 1 shows one embodiment of this invention, but the second
The same members as in the figure are given the same reference numerals as in FIG. 2, and their repeated explanation will be omitted.

In this embodiment, a solenoid valve 1 and a valve body 2
A circumferential groove is provided in the seat member 5 at the hydraulic circuit coupling part A between the valve bodies 2 and 2, and an O-ring 15 is disposed in this circumferential groove as an elastic ring with a sealing and supporting function. The seat member 5 is inserted so as to be compressed, and a mounting plate 21 is attached to the valve body 2 of the solenoid valve 1 to fix its position in the direction of movement of the plunger. , and circular holes 22 are bored on the left and right sides of the mounting plate 21, respectively. The inner periphery of a plurality of cylindrical anti-vibration rubbers 20 is restrained and fixed to the valve body 2 at a position laterally away from the electromagnetic valve 1. The mounting plate 21 is inserted into the groove 23 provided on the outer periphery of the anti-vibration rubber 20.
The circular holes 22 are fitted together. The vibration isolating rubber 20 is fixed by having a collar 24 of a certain length that fits into its inner diameter, and by screwing a bolt 25 that passes through the collar 24 into the valve body 2 through a washer. The circular hole 22 of the mounting plate 21 fits into a groove 23 provided according to the outer peripheral shape of the vibration isolating rubber 20, and if the outer peripheral shape of the vibration isolating rubber 20 is an irregular shape other than a circle, the mounting plate The circular hole 21 is also irregularly shaped. The circular hole 22 is substantially a circular hole even if it is an enlarged portion at the back of a notch where a portion of the mounting plate 21 is cut out, and includes such a shape.

As described above, the vibration isolating rubber 20 is fixed to the valve body 2 by a fixing member including a collar 24, a bolt 25, and a washer fitted to the bolt. When the bolt 25 is tightened, the washer fitted onto the bolt 25 presses the collar 24, and the vibration isolating rubber 20 is not compressed beyond the length of the collar 24, so that no overcompression occurs. That is, the collar 24 serves as a member that restrains the inner circumferential side of the vibration isolating rubber 20 and restricts the vibration isolating rubber 20 to a length that does not cause excessive compression.

Next, the effect will be explained.

First, the operation of the conventional mounting structure will be explained with reference to FIGS. 2 and 3. When the solenoid valve 1 is driven on duty, the plunger 4 periodically moves the core 6.
The solenoid valve 1 collides with the end surface 6a and the seat surface 5a, and noise and vibration are generated from the solenoid valve 1. Since the airborne sound emitted from the solenoid valve 1 is insulated by the transmission case, the amount of sound leaking to the outside is very small. Vibration of the solenoid valve 1 is structurally propagated to the transmission case via the valve body 2 which is rigidly connected and in direct contact with the solenoid valve 1, and is radiated to the outside as a loud sound from the transmission case.

Next, the operation of the mounting structure of this invention will be explained with reference to FIG. Air-borne sound when the solenoid valve 1 is driven on duty is radiated directly into the air from the solenoid valve, so the mounting structure of this invention is very similar to the conventional example, and the sound is insulated by the transmission case as in the conventional example. Therefore, the sound leaking to the outside is very small. Regarding the structure in which radiation is emitted from the transmission case, a mounting structure using anti-vibration rubber 20 and an O-ring 15 are used to prevent the solenoid valve 1 and the valve body 2 from coming into contact with metal, thereby preventing the vibration of the solenoid valve 1 from reaching the valve body 2. Since the propagation is suppressed, it is extremely small compared to the conventional example.

[Effect of idea]

As explained above, according to this idea,
Its structure is such that a mounting plate is provided that protrudes laterally from the solenoid valve, and the inner periphery of multiple cylindrical anti-vibration rubber is restrained and fixed to the valve body at a position laterally away from the solenoid valve by a fixing member to the valve body. The mounting plate has a plurality of substantial holes, the outer periphery of the vibration isolating rubber is provided with a groove surrounding the outer periphery, and the groove on the outer periphery of the vibration isolating rubber is fitted into each hole of the mounting plate, respectively. In addition, the hydraulic circuit connection between the solenoid valve body is a solenoid valve installation in which the solenoid valve and the valve body are sealed with an elastic ring without contact, and the solenoid valve is elastically supported in a floating manner via anti-vibration rubber and an elastic ring. (1) Since the metal members of the solenoid valve and the valve body do not have any rigidity or contact directly at all, but come into contact through rubber, the vibrations generated in the solenoid valve when the solenoid valve is activated propagate through the transmission structure. (2) A mounting plate is provided that protrudes from the solenoid valve to the side, and a vibration-proof rubber is installed at a position away from the solenoid valve to the side. Since it is fixed to the valve body and the hole provided in the mounting plate fits into the groove on the outer circumference of the vibration isolating rubber, the vibration isolating rubber is far from the solenoid valve, reducing the amount of sagging of the solenoid valve, improving the vibration isolating effect and the vibration isolating rubber. It is advantageous in terms of durability. This effect can be obtained.

[Brief explanation of drawings]

Fig. 1 is a side sectional view of an embodiment of the present invention, Fig. 2 is a side sectional view showing an example of a conventional solenoid valve mounting structure, and Fig. 3 is a side sectional view showing another example of a conventional solenoid valve mounting structure. It is a partial cross-sectional side view. 1...Solenoid valve, 2...Valve body, 3...O
Ring, 4... Plunger, 4a... Needle part, 5... Seat member, 5a... Seat surface, 5b
...orifice, 6...core, 6a...end face,
7... Guide member, 8... Coil, 9... Bobbin,
10... Spring, 11, 12... Oil hole, 15
...O-ring, 16...Mounting plate, 17...Bolt,
20... Anti-vibration rubber, 21... Mounting plate, 22...
Circular hole, 23...Groove, 24...Collar, 25...Bolt, A...Hydraulic circuit connection part.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. Anti-vibration rubber is provided at the fixed position attachment part of the solenoid valve to the valve body, an elastic ring is provided at the hydraulic circuit connection part between the solenoid valve body, and an elastic ring is provided between the solenoid valve and the valve body main body. In a plunger-type solenoid valve mounting structure that controls hydraulic pressure installed in the case of an automatic transmission for automobiles with an elastic member interposed, a mounting plate is provided that protrudes laterally from the solenoid valve, and the mounting plate is installed laterally from the solenoid valve. The inner periphery of a plurality of cylindrical vibration isolating rubbers is restrained and fixed to the valve body at a remote position by a fixing member to the valve body, and the mounting plate has a plurality of substantial holes, and the vibration isolating rubber A groove surrounding the outer periphery is provided on the outer periphery, and a groove on the outer periphery of the anti-vibration rubber is fitted into each hole of the mounting plate, respectively, so that the hydraulic circuit connection between the solenoid valve body is made elastic without contact between the solenoid valve and the valve body. A solenoid valve installation structure in which the solenoid valve is sealed by a ring and the electromagnetic piece is elastically supported in a floating manner via vibration-proof rubber and an elastic ring. 2. The electromagnetic valve mounting structure according to claim 1, which is a registered utility model, in which the vibration isolating rubber is attached to the valve body by a fixing member, which is provided with a member that restricts the vibration isolating rubber to a length that does not cause overcompression.