JP2007239761A - Support metal fitting of vibration control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a support metal fitting of a vibration control device for making both compatible in weight reduction and strength. <P>SOLUTION: This support metal fitting 10 is composed of an aluminum casting of supporting a vibration control device body 20 on the car body 2 side, and has a bottomed cylindrical body cylinder part 36, a central support part 38 arranged in its bottom part 36A and installed on the car body 2 side, a main support leg part 40 projected from an outer peripheral surface 36B of the body cylinder part, extending in the vehicle longitudinal direction F while inclining downward and having an installation surface part 48 to the car body side in a tip part, and a sub-support leg part 42 projected from the outer peripheral surface 36B of the body cylinder part, extending in the vehicle width direction G while inclining downward and having an installation surface part 52 to the car body side in the tip part. The main support leg part 40 is formed wider than the sub-support leg part 42, and a flange 56 is arranged in the narrowly formed sub-support leg part 42. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a support fitting for a vibration isolator that is used to vibration-proofly support a vibration generator such as an automobile engine.

A vibration isolator is used to support a vibration generator such as an automobile engine so that the vibration is not transmitted to the vehicle body. The vibration isolator is attached and fixed to the vibration generator and the vehicle body via a support fitting. Conventionally, iron press products are generally used as such support fittings, but aluminum support fittings have been proposed for the purpose of weight reduction (see Patent Documents 1 to 5 below).
JP-A-8-60282 JP-A-11-111161 JP 11-511117 A Japanese Patent Application Laid-Open No. 11-241751 Japanese Patent Laid-Open No. 11-278064

  However, when aluminum is used, the strength is lower than that of iron. Especially in vibration isolators such as engine mounts, the strength and light weight are reduced in the support bracket for connecting and supporting the vibration isolator body to the vehicle body side. It is not easy to achieve both.

  The present invention has been made in view of the above, and it is an object of the present invention to provide a support metal fitting for supporting a vibration isolator body on the vehicle body side that is lightweight and excellent in strength.

The support bracket of the vibration isolator according to the present invention has a rubber-like elasticity in which a first attachment member attached to the vibration generator side and a cylindrical second attachment member attached to the vehicle body side are interposed therebetween. A support fitting made of an aluminum casting that supports a vibration isolator body that is joined by a vibration isolating substrate made of a body,
A bottomed cylindrical main body cylinder portion that holds the outer peripheral surface of the second attachment member, a central support portion that is provided on the bottom portion of the main body cylinder portion and attached to the vehicle body side, and protrudes from the outer peripheral surface of the main body cylinder portion A main support leg provided with a mounting surface portion on the vehicle body side at a tip portion and extending from the outer peripheral surface of the main body cylinder portion and extending downwardly while being inclined downward and extending in a first direction perpendicular to the axis. A sub-support leg that extends toward the second direction perpendicular to the axis while inclining and has a mounting surface portion on the vehicle body side at the tip.
The main support leg is formed wider than the sub support leg, and a flange is provided on the sub support leg formed narrow.

  In the support metal fitting of the present invention, it is preferable that the flange is provided on the lower side in the longitudinal direction of the sub support leg. Moreover, it is preferable that the protruding position of the sub-support leg from the main body cylinder is higher than the protruding position of the main support leg. Moreover, it is preferable that the said center support part is eccentrically provided with respect to the axial center of the said main body cylinder part. Further, the center support portion is provided eccentrically on the side away from the main support leg portion at the bottom portion of the main body cylinder portion, and a protrusion extending from the center support portion toward the main support leg portion side is provided on the bottom portion. It is preferable to be provided.

  In the present invention, the vibration generator is an automobile engine, the main support leg is projected in the vehicle front-rear direction, and the sub support leg is projected in the vehicle width direction. preferable.

  According to the present invention, in a support metal fitting made of an aluminum casting, a main body cylindrical portion that holds the vibration isolator main body, a central support portion at the bottom thereof, a main support leg portion and a sub support leg portion that protrude from the outer peripheral surface Are provided to support the vehicle body at these three points. And, by making the main support leg part wide and giving strength to the main load in the direction perpendicular to the axis, the sub support leg part is made narrow so as to have the rotation prevention function of the main body cylinder part, Volume can be reduced while ensuring strength. Moreover, appropriate reinforcement is made by providing a flange on the narrow sub-support leg. As described above, sufficient strength can be ensured while reducing the weight of the support fitting for supporting the lower side of the vibration isolator.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIGS. 1-5 shows the support metal fitting 10 which concerns on one Embodiment of this invention, FIG. 6 is sectional drawing of the vibration isolator 12 provided with this support metal fitting 10. FIG. The vibration isolator 12 is an engine mount for supporting an automobile engine that is a vibration generator and preventing the vibration from being transmitted to the vehicle body 2, and the support fitting 10 is a bracket thereof.

  Specifically, the vibration isolator 12 includes a metal first attachment member (upper attachment member) 14 attached to the engine side member 1 and a cylindrical metal second attachment member (lower portion) attached to the vehicle body 2 side. Side anti-vibration device body 20 comprising a rubber elastic body 18 interposed between the members 14 and 16, and the anti-vibration device body 20 with respect to the vehicle body 2. And a supporting metal fitting 10 to be supported.

  The first mounting member 14 is disposed above the axial center of the second mounting member 16 and is fixed to the engine side member 1 by fastening means such as bolts. The anti-vibration base 18 has a substantially truncated cone shape, the first mounting member 14 is embedded in the upper portion thereof, and the inner peripheral surface of the second mounting member 16 is vulcanized and bonded to the lower end portion thereof. .

  A diaphragm 24 made of a flexible rubber film is attached to the lower end of the second mounting member 16 so as to form a liquid sealing chamber 22 between the vibration-proofing substrate 18. The liquid sealing chamber 22 is divided into a main liquid chamber 28 on the vibration isolating base 18 side and a sub liquid chamber 30 on the diaphragm 24 side by a partition body 26 fitted to the inner peripheral surface of the second mounting member 16. ing. The main liquid chamber 28 and the sub liquid chamber 30 are communicated with each other by an orifice 32 provided on the outer peripheral portion of the partition 26. An elastic partition film 34 is provided at the center of the partition 26 as a countermeasure against high frequencies.

  Next, the configuration of the support fitting 10 that holds the vibration isolator main body 20 having the above structure with respect to the vehicle body 2 will be described.

  The support fitting 10 includes a bottomed cylindrical main body cylinder portion 36 that externally holds the outer peripheral surface 16A of the second attachment member 16, and a central support that is provided on the bottom portion 36A of the main body cylinder portion 36 and attached to the vehicle body 2 side. And a main support leg 40 and a sub support leg 42 that protrude from the outer peripheral surface 36B of the main body cylinder 36 and are attached to the vehicle body 2 side, and these are integrally formed by casting aluminum. . Accordingly, the support fitting 10 is an aluminum casting, and the aluminum includes both aluminum and its alloys.

  The main body cylinder portion 36 has a cylindrical shape that opens upward so that the second mounting member 16 is press-fitted and fixed to the inside thereof, and has a cup shape whose lower end is closed by the bottom portion 36A. ing.

  The center support portion 38 is formed by recessing a part of the bottom portion 36A, which is the bottom plate of the main body cylindrical portion 36, downward (see FIG. 6), and as shown in FIGS. It protrudes from the lower surface of the bottomed short cylindrical shape. A through hole 44 through which a fastening means such as a bolt for fixing to the vehicle body 2 passes is provided in the bottom surface portion 38 </ b> A of the center support portion 38.

  As shown in FIGS. 4 and 5, the center support portion 38 is provided eccentrically with respect to the axis O of the main body cylinder portion 36. Specifically, the center support portion 38 is provided on the side away from the main support leg portion 40 with respect to the axis O and eccentrically provided on the support leg portion 42 side. And the protrusion 46 extended toward the main support leg part 40 side from the outer peripheral surface 38B of this center support part 38 is integrally provided in bottom part 36A of the main body cylinder part 36. As shown in FIG. Two protrusions 46 are provided in parallel to each other from both radial ends of the central support portion 38. The protrusion 46 has substantially the same height as that of the central support portion 38 at the connecting portion to the central support portion 38, and is formed in an inclined shape that gradually decreases in height and reaches the lower surface of the bottom portion 36A. (See FIGS. 2, 5, and 6).

  The main support leg 40 is formed to project toward the vehicle front-rear direction (first direction in the direction perpendicular to the axis) F, in particular, forward while tilting downward D from the outer peripheral surface 36B of the main body cylinder portion 36. And the attachment surface part 48 to the vehicle body 2A located a little above the attachment position to the vehicle body 2 in the center support part 38 is provided in the front-end | tip part with the horizontal attitude | position, A through hole 50 through which a fastening means such as a bolt for fixing to the vehicle body 2A passes is provided. The through hole 50 is a hole penetrating in the vehicle vertical direction in parallel with the axis O of the main body cylinder portion 36. Note that ribs 49 extending integrally from the main body of the main support leg 40 are provided and reinforced at both side edge portions on the upper surface side of the mounting surface portion 48.

  The main support leg 40 has a constant thickness in the longitudinal direction except for the connection part to the main body cylinder part 36 and the attachment surface part 48, and its width W1 is set wider than the width W2 of the sub support leg 42. It is formed so as to exhibit a high strength against the main load in the vehicle longitudinal direction F. Further, flanges are not provided at both edges in the width direction of the main support leg 40, and therefore the main support leg 40 is formed in a rectangular shape in cross section.

  The sub-support leg portion 42 is formed so as to protrude toward the vehicle width direction (second direction perpendicular to the axis) G, particularly toward the vehicle inner side, while being inclined downward D from the outer peripheral surface 36B of the main body cylinder portion 36. In this way, the sub support leg 42 is formed to project in a direction substantially orthogonal to the main support leg 40.

  And the attachment surface part 52 to the vehicle body 2B located a little above the attachment position to the vehicle body 2A in the main support leg part 40 is provided in the front-end | tip part of the sub support leg part 42 with a horizontal attitude | position. The attachment surface portion 52 is provided with a through hole 54 through which a fastening means such as a bolt for fixing to the vehicle body 2B passes. The through hole 54 is a hole penetrating in the vehicle vertical direction in parallel with the axis O of the main body cylinder portion 36. Note that ribs 53 that extend integrally from the main body of the sub-supporting leg portion 42 are provided and reinforced at both side edge portions on the upper surface side of the mounting surface portion 52.

  The sub support leg portion 42 is a support portion for preventing rotation about the axis O of the vibration isolator main body 20 and suppressing twisting displacement such that the axis O tilts. It is formed narrower than. The narrow sub-support leg 42 is provided with a flange 56. The lower side 42A in the longitudinal direction H is formed in a step shape in the sub-support leg 42, and the flange 56 is formed to project upward at both side edges in the width direction of the lower side 42A that has dropped in the step shape. Has been. The height of the flange 56 is set so that the upper surface of the upper side 42B that is gently inclined of the sub-support leg 42 and the upper surface of the rib 53 on the tip side are smoothly connected without any step (FIGS. 1 and 6). reference).

  As shown in FIG. 5, the projecting position 42 </ b> C of the sub support leg 42 with respect to the main body cylinder 36 is set to be higher J than the projecting position 40 </ b> A of the main support leg 40 with respect to the main body cylinder 36. Specifically, the projecting position 42C of the sub support leg 42 is set slightly above the center in the height direction of the main body cylinder 36, and the projecting position 40A of the main support leg 40 is the height of the main body cylinder 36. It is set slightly below the center of the direction.

  Since the support metal fitting 10 of the present embodiment configured as described above is made of an aluminum casting, the weight of the material itself can be reduced as compared with an iron bracket.

  In addition, the support fitting 10 includes a main body cylinder portion 36 that holds the vibration isolator main body 20, a main support leg portion 40 that protrudes from the center support portion 38 of the bottom portion 36 </ b> A, and an outer peripheral surface 36 </ b> B, and a sub support leg portion 42. The vehicle body 2 side is supported at three points, and a solid and wide main support leg portion 40 can give a high strength to the vehicle longitudinal direction F, which is the main load direction. Moreover, by providing the flange 56 at the end portion while narrowing the sub-support leg portion 42 that functions to prevent rotation and twisting of the vibration isolator main body 20, it is appropriate and sufficient as the support bracket 10 for the engine mount. The volume can be reduced by reducing the volume while securing the strength, and the moldability can also be secured with the above shape.

  Further, the sub-support leg portion 42 that is an auxiliary support portion for supporting the vibration isolator main body 20 protrudes from the main body cylinder portion 36 at a position higher than the main support leg portion 40, thereby preventing rotation and A function to prevent twisting can be effectively exhibited.

  Further, the center support portion 38 is provided eccentrically on the side away from the main support leg portion 40, and the protrusion 46 extending from the center support portion 38 toward the main support leg portion 40 side is provided. The strength against the load in the front-rear direction F can be increased.

  In the above embodiment, the case where the vibration isolator body 20 is a liquid-filled vibration isolator has been described as an example. However, the present invention is not limited to this, and the vibration isolator having no liquid chamber is provided. It can also be applied to devices.

  INDUSTRIAL APPLICABILITY The present invention can be suitably used for various vibration isolators for vehicles such as automobile engine mounts.

The perspective view seen from diagonally upward of the support metal fitting of the vibration isolator which concerns on one Embodiment of this invention Perspective view of the support bracket seen from diagonally below Top view of the support bracket Bottom view of the support bracket Side view of the support bracket Cross section of the vibration isolator

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Engine side member (vibration generating body), 2, 2A, 2B ... Vehicle body, 10 ... Support metal fitting, 12 ... Vibration isolator, 14 ... 1st attachment member, 16 ... 2nd attachment member, 16A ... Outer peripheral surface, 18 DESCRIPTION OF SYMBOLS ... Anti-vibration base | substrate, 20 ... Anti-vibration apparatus main body, 36 ... Main body cylinder part, 36A ... Bottom part, 36B ... Outer peripheral surface, 38 ... Center support part, 40 ... Main support leg part, 40A ... Projection position, 42 ... Sub support Leg part, 42A ... Lower side, 42C ... Projection position, 46 ... Projection, 48 ... Installation surface part of main support leg part, 52 ... Attachment surface part of sub support leg part, 56 ... Flange, D ... Downward, F ... Vehicle Front-rear direction (first direction perpendicular to the axis), G ... vehicle width direction (second direction perpendicular to the axis), H ... longitudinal direction of the sub-support leg, J ... upward, W1 ... width of the main support leg, W2 ... Width of sub support leg, O ... Axle

Claims (6)

A first mounting member attached to the vibration generator side and a cylindrical second mounting member attached to the vehicle body side are joined together by a vibration-proof base made of a rubber-like elastic body interposed therebetween. A support fitting made of cast aluminum that supports the vibration device body,
A bottomed cylindrical main body cylinder portion that holds the outer peripheral surface of the second attachment member, a central support portion that is provided on the bottom portion of the main body cylinder portion and attached to the vehicle body side, and protrudes from the outer peripheral surface of the main body cylinder portion A main support leg provided with a mounting surface portion on the vehicle body side at a tip portion and extending from the outer peripheral surface of the main body cylinder portion and extending downwardly while being inclined downward and extending in a first direction perpendicular to the axis. A sub-support leg that extends toward the second direction perpendicular to the axis while inclining and has a mounting surface portion on the vehicle body side at the tip.
A support bracket for a vibration isolator, wherein the main support leg is formed wider than the sub support leg, and a flange is provided on the sub support leg formed narrow.   2. The vibration isolator support bracket according to claim 1, wherein the flange is provided on a lower side in the longitudinal direction of the sub support leg.   The vibration-proof device support fitting according to claim 1 or 2, wherein a protruding position of the sub-support leg from the main body cylinder is higher than a protruding position of the main support leg.   The anti-vibration device support bracket according to claim 1, wherein the central support portion is provided eccentrically with respect to an axis of the main body cylinder portion.   The central support part is provided eccentrically on the side away from the main support leg part at the bottom of the main body cylinder part, and a ridge extending from the central support part toward the main support leg part side is provided on the bottom part. The vibration-proof device support bracket according to claim 4. 6. The vibration generator is an automobile engine, wherein the main support leg protrudes in the vehicle front-rear direction, and the sub support leg protrudes in the vehicle width direction. The vibration-proof device support bracket according to any one of the above.

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