JP2006090376A - Rubber vibration isolator fixing structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rubber vibration isolator fixing structure eliminating a trouble due to expansion of a rubber vibration isolator. <P>SOLUTION: The rubber vibration isolator 16 is externally fitted on a flange 15 of a solenoid valve 2. A groove 22 in which the flange 15 of the solenoid valve 2 is inserted is formed on an inner circumference surface 21 of the rubber vibration isolator 21, and an outer circumference groove 24 wider than the groove 22 is formed at a section of an outer circumference surface 23 of the rubber vibration isolator 2 positioned on a reverse side of the groove 22 over whole circumference. A ring shape regulation member 31 regulating deformation of the rubber vibration isolator 2 to a side direction is fitted in the outer circumference groove 24, and a waist part 32 of the rubber vibration isolator 16 externally fitted on the outer circumference part of the flange 15 is gripped by the flange 15 and the regulation member 31. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an anti-vibration rubber fixing structure for fixing a solenoid valve via an anti-vibration rubber.

  Conventionally, as shown in FIG. 4, a hydraulic circuit is formed in a valve body 101 of an automatic transmission or the like, and the valve body 101 is provided with a solenoid valve 102 for controlling the hydraulic pressure in the hydraulic circuit. Yes.

  That is, as shown in FIG. 4B, attachment holes 103 are provided on the outer surface of the valve body 101, and duty-driven solenoid valves 102 are attached to the attachment holes 103. As shown in FIG. 5A, a ring-shaped bank portion 104 is formed on the outer peripheral portion of the mounting hole 103, and the valve body 102 is attached to the anti-vibration rubber 105 inside the bank portion 104. Is attached through. In addition, as shown in FIG.5 (b), it may fix via the press bracket 111.

  As shown in FIG. 6 (a), a flange 121 extending laterally is formed on the outer peripheral surface of the solenoid valve 102, and the anti-vibration rubber 105 is provided on the outer periphery of the flange 121. It is inserted. The anti-vibration rubber 105 has a groove 122 into which the flange 121 is inserted on the inner peripheral surface, and a connector or the like extending from the solenoid valve 102 is inserted as shown in FIG. A notch 123 is provided in part.

  When the solenoid valve 102 is fixed to the valve body 101, the anti-vibration rubber 105 is externally fitted to the flange 121 of the solenoid valve 102, and the solenoid valve 102 is attached to the mounting as shown in FIG. Insert into hole 103. At this time, since the anti-vibration rubber 105 is disposed in the bank portion 105, a fixing plate (not shown) is placed on the bank portion 105, and a bolt is screwed into the screw hole 131 in the outer peripheral portion. Thus, the anti-vibration rubber 105 is fixed with the fixing plate pressed from above.

  At this time, the anti-vibration rubber 105 is configured to prevent the anti-vibration rubber 105 from being detached from the solenoid valve 102 by suppressing lateral spread by the bank portion 104 at the outer peripheral portion. In the press bracket support type shown in FIG. 5B, the large diameter portion 141 provided at the end of the press bracket 111 can be prevented from being detached.

  However, in such an anti-vibration rubber fixing structure, in order to prevent the anti-vibration rubber 105 from detaching from the solenoid valve 102, the anti-vibration valve body 101 or the press-molded press bracket 111 has an anti-vibration function. The bank portion 104 and the large diameter portion 141 that prevent the rubber 105 from spreading had to be formed.

  For this reason, when forming the bank part 104 in the said valve body 101, the site | part became thick and it was easy to generate | occur | produce a nest. In addition, it takes a lot of effort to form the large diameter portion 141 on the press bracket 111 to be press molded.

  The present invention has been made in view of such conventional problems, and an object of the present invention is to provide a vibration-proof rubber fixing structure capable of eliminating the problems caused by the spread of the vibration-proof rubber. .

  In order to solve the above-mentioned problems, in the vibration-proof rubber fixing structure of the present invention, a groove into which a flange provided on the solenoid valve is inserted is formed on the inner peripheral surface while being attached to the outer peripheral portion of the solenoid valve. In the anti-vibration rubber, an outer circumferential groove wider than the groove is formed on the outer circumferential surface of the anti-vibration rubber located on the back side of the groove, and the anti-vibration rubber is formed in the outer circumferential groove. A ring-shaped restricting member that restricts deformation to the side is disposed, and the portion of the anti-vibration rubber that is externally fitted to the outer periphery of the flange is sandwiched between the flange and the restricting member.

  That is, an outer peripheral groove is formed over the entire outer peripheral surface of the vibration isolating rubber attached to the solenoid valve, and the outer peripheral groove has a ring shape that restricts deformation of the anti-vibration rubber to the side. The restricting member is disposed. For this reason, even if it is a case where the said vibration-proof rubber is pressed, the deformation | transformation to the direction which spreads to a side is prevented.

  At this time, the outer peripheral groove is provided at a portion on the back side of the groove into which the flange of the solenoid valve is inserted, and the portion of the anti-vibration rubber that is externally fitted to the outer peripheral portion of the flange is connected to the flange and the regulating member. Can be pinched. This reliably prevents the heel from being detached from the groove.

  As described above, in the anti-vibration rubber fixing structure of the present invention, the ring-shaped regulating member provided in the outer circumferential groove of the anti-vibration rubber prevents the anti-vibration rubber from being deformed in the lateral direction. can do. Thereby, even if it is a case where anti-vibration rubber is pressed at the time of attachment, separation of anti-vibration rubber from a solenoid valve can be prevented.

  Therefore, compared to the conventional case where the bank part that surrounds the outer peripheral part of the vibration-proof rubber had to be formed in the valve body to be cast, it is possible to eliminate the local thick part that is the cause of the nest. it can. Thereby, the defect occurrence rate of the valve body can be greatly suppressed.

  In addition, compared to the conventional method of forming a large-diameter portion for preventing the spread of the vibration-proof rubber on the press-molded press bracket, the formation of the large-diameter portion having a step can be abolished. Press forming becomes easy.

  The outer circumferential groove is provided in a portion on the back side of the groove into which the solenoid valve flange is inserted, and a portion of the anti-vibration rubber fitted on the outer peripheral portion of the flange is defined by the flange and the regulating member. Can be pinched. Thereby, the detachment | leave of the said collar from the said groove | channel can be prevented reliably.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a view showing a vibration-proof rubber fixing structure according to the present embodiment, and shows an example applied to an automatic transmission of an automobile.

  That is, a hydraulic circuit is formed in the valve body 1 of the automatic transmission, and the valve body 1 is provided with a plurality of solenoid valves 2 for controlling the hydraulic pressure in the hydraulic circuit. As shown in FIG. 1 (b), a plurality of mounting holes 3 are provided on the outer surface of the valve body 1, and the duty-driven solenoid valve 2 is mounted in each mounting hole 3. ing.

  As shown in FIG. 2, the solenoid valve 2 includes a main body portion 11 provided with a driving mechanism and a nozzle portion 12 extending from the front end of the main body portion 11, and the nozzle portion 12 is inserted into the mounting hole 3. Thus, the hydraulic pressure in the hydraulic path 13 can be controlled. As shown in FIG. 3, a laterally extending flange 15 is formed on the outer peripheral surface 14 of the main body 11 over the entire circumference, and a vibration isolating rubber 16 is fitted on the flange 15. It is attached in the state.

  The anti-vibration rubber 16 is made of a rubber member formed in a ring shape, and is provided on the inner peripheral surface 21 of the solenoid valve 2 with the anti-vibration rubber 16 attached to the outer peripheral portion of the solenoid valve 2. A groove 22 into which the flange 15 is inserted is formed over the entire circumference. An outer peripheral groove 24 wider than the groove 22 is formed over the entire circumference at a portion of the outer peripheral surface 23 of the vibration isolating rubber 2 located on the back side of the groove 22.

  As shown in FIG. 3 (b), the outer circumferential groove 24 is fitted with a regulating member 31 in which a metal plate for regulating the deformation of the anti-vibration rubber 2 to the side is formed in a circular ring shape. The waist portion 32 of the anti-vibration rubber 16 fitted around the outer periphery of the flange 15 is sandwiched between the flange 15 and the restriction member 31.

  The restricting member 32 is not limited to this shape. For example, the restricting member 32 is usually in a band shape, and is formed in a ring shape by being wound around the outer circumferential groove 24 and being fixed at an end portion during use. It may be a regulating member.

  The vibration isolating rubber 16 is partially formed with a notch 41 through which a connector or the like extending from the solenoid valve 2 is inserted, and the notch 41 is provided above the outer circumferential groove 24. ing.

  In the present embodiment according to the above configuration, when the solenoid valve 2 to which the anti-vibration rubber 16 is attached is attached to the valve body 1, the nozzle portion 12 of the solenoid valve 2 is attached to the valve body 1. 3 and the anti-vibration rubber 16 is brought into close contact with the outer periphery of the mounting hole 3. Next, as shown in FIG. 2, a fixed plate 51 is disposed on the solenoid valve 2, and the main body 11 of the solenoid valve 2 is inserted into a circular hole 52 provided in the fixed plate 51. The outer peripheral portion of the circular hole 52 is brought into contact with the vibration isolating rubber 16. Then, a bolt (not shown) inserted through the fixing plate 51 is screwed into a screw hole 53 provided in the valve body 1 to fix the fixing plate 51, as shown in FIG. Thus, the anti-vibration rubber 16 is fixed to the valve body 1 while being pressed.

  At this time, a force acts on the anti-vibration rubber 16 in a laterally spreading direction, but the outer circumferential groove 24 on the outer peripheral surface of the anti-vibration rubber 16 is restricted from being deformed laterally. The ring-shaped regulating member 23 is provided, and deformation in the direction of spreading to the side can be prevented. For this reason, even if it is a case where the vibration isolator rubber 24 is pressed at the time of attachment, the detachment | leave from the solenoid valve 2 can be prevented.

  Therefore, compared with the conventional case where the bank portion surrounding the outer peripheral portion of the vibration isolating rubber 16 must be formed in the valve body 1 to be cast, the locally thick portion that is the cause of the nest is eliminated. be able to. Thereby, the defect occurrence rate of the valve body 1 can be significantly suppressed.

  On the other hand, as shown in FIG. 2 (b), compared to the conventional case where a large-diameter portion for preventing the vibration isolating rubber 16 from spreading is formed on the press bracket 61 to be press-molded, the press bracket The formation of a large diameter portion having a step to 61 can be eliminated. Therefore, press molding of the press bracket 61 is facilitated.

  And the said outer periphery groove | channel 24 is provided in the site | part on the back side of the groove | channel 22 in which the collar 15 of the solenoid valve 2 is inserted, The waist part 32 of the vibration-proof rubber 16 externally fitted to the outer peripheral part of the said collar 15 is provided. It can be held in a state of being sandwiched between the flange 15 and the regulating member 31. As a result, inadvertent detachment of the flange 15 from the groove 22 can be prevented, and separation of the vibration isolating rubber 16 from the solenoid valve 2 can be reliably prevented.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows one embodiment of this invention, (a) is a perspective view which shows the state by which the solenoid valve was attached to the valve body, (b) is a perspective view which shows the state by which the solenoid valve was removed from the valve body. FIG. It is explanatory drawing which shows the usage example of the embodiment, (a) is sectional drawing of the principal part of FIG. 1, (b) is sectional drawing of the principal part which shows another usage example. (A) is sectional drawing of the principal part of the embodiment, (b) is a disassembled perspective view which shows a vibration-proof rubber part. It is a figure which shows a prior art example, (a) is a perspective view which shows the state by which the solenoid valve was attached to the valve body, (b) is a perspective view which shows the state by which the solenoid valve was removed from the valve body. It is explanatory drawing which shows the use condition of the prior art example, (a) is sectional drawing of the principal part of FIG. 4, (b) is sectional drawing of the principal part which shows another usage example. (A) is sectional drawing of the principal part of the same prior art example, (b) is a perspective view which shows a vibration-proof rubber part.

Explanation of symbols

2 Solenoid valve 15 １６ 16 Anti-vibration rubber 21 Inner peripheral surface 22 Groove 23 Outer peripheral surface 24 Outer peripheral groove 31 Control member

Claims (1)

In the anti-vibration rubber in which a groove into which the flange provided in the solenoid valve is inserted in the state attached to the outer peripheral portion of the solenoid valve is formed on the inner peripheral surface,
An outer circumferential groove that is wider than the groove is formed over the entire circumference at a portion of the outer circumferential surface of the anti-vibration rubber located on the back side of the groove, and deformation of the anti-vibration rubber to the side is performed on the outer circumferential groove. An anti-vibration rubber fixing structure characterized in that a ring-shaped restriction member for restriction is disposed, and a portion of the anti-vibration rubber that is fitted around the outer periphery of the flange is sandwiched between the flange and the restriction member.

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