JP2010270827A - Cylindrical vibration control mount - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the durability of a bent part being a caulked part on a flange part of a stopper fitting. <P>SOLUTION: A vibration control mount 10, which includes the stopper fitting 4 that functions as a stopper for limiting the relative displacement of an annular fitting 1 and a center fitting 2, has a window cutout 9 for water drain formed by cutting out a part of the circumferential direction of the stopper fitting 4. In this mount, a circumferential position part corresponding to the window cutout 9 of the flange part 12 of the annular fitting 1 corresponding to the window cutout 9 is structured by bending a tongue part 17, which is provided so as to extend to the outer circumferential side from an outer edge 16 of the circumferential position part other than the circumferential position part corresponding to the window cutout, so as to prevent it from extending to the outer circumferential side from the outer edge 16. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an annular fitting formed with a flange portion projecting outward from the upper end of a cylindrical body portion, a center fitting provided above the center line of the annular fitting, and an annular fitting and a center. A rubber member that is disposed between the brackets and connects the brackets, and a stopper bracket that functions as a stopper that limits the relative displacement of the annular bracket and the center bracket. The present invention relates to a cylindrical vibration-proof mount formed with a window notch for draining water, and particularly to a device capable of improving the strength and durability of a bent portion.

  FIG. 1 is a perspective view showing a conventional cylindrical vibration-proof mount (see, for example, Patent Document 1), FIG. 2 is a cross-sectional view thereof, and the cylindrical vibration-proof mount 90 is an upper end of a cylindrical body portion. An annular metal fitting 1 formed with a flange portion 12 projecting to the outer periphery side, a center metal fitting 2 provided above the center line of the annular metal fitting 1 with a space therebetween, and between the annular metal fitting 1 and the center metal fitting 2 A generally conical rubber member 3 that connects the metal fittings 1 and 2 and a stopper metal 94 that functions as a stopper for limiting the relative displacement of the ring metal 1 and the center metal 2. 94 is a cylindrical portion 95 having a substantially cylindrical shape, a stopper ring 96 protruding from the upper portion of the cylindrical portion 95 to the inner peripheral side, and bent at the lower end so as to wrap around the outer edge of the flange portion 12. 12 and fixed The bent portion 97 and a plate-like portion 98 that continues from the lower end of the tubular portion 95 to the bent portion 97 along the upper surface of the flange portion 12. The bent portion 97, the plate-like portion 98, and the tube A window notch 99 for draining water is formed by cutting out a part in the circumferential direction of the lower part of the shape part 95.

  The cylindrical anti-vibration mount 90 provided with such a stopper fitting 94 limits the relative displacement of the annular fitting 1 and the center fitting 2 to a small extent, so that the durability of the rubber member 3 can be improved. Since a window notch 99 is formed in the lower part of 94, rain water and the like are prevented from collecting in the space between the rubber member 3 and the inside of the stopper fitting 94, and the air inside the stopper fitting 94 is passed through the window notch 99. Ventilation can suppress the temperature rise in the stopper fitting 94.

  The window notch 99 is originally provided for ventilation and drainage from the inside of the stopper fitting 94 as described above, but the notch up to the bent portion 97 is bent. This is to prevent the cylindrical vibration-proof mount 90 attached to the vehicle from interfering with surrounding components when the portion 97 protrudes radially outward from the flange portion 12. Therefore, since the circumferential position of the portion corresponding to the bent portion 97 of the window notch 99 is determined by the positional relationship with the components arranged around it, the corresponding circumferential position is limited. The circumferential position of the portion corresponding to the cylindrical portion 95 of the notch 99 is for ventilation or drainage from the inside of the stopper fitting 94, and therefore the notch may be disposed at any circumferential position. However, in order to simplify the notch production, a window notch 99 is provided in which notches for the purpose of ventilation or drainage and notches for preventing interference with surrounding parts are combined into one.

International Patent Publication No. 03/001070 pamphlet (2003)

  By the way, when the stopper fitting 94 functions and an upward force is applied to the stopper fitting 94 when the annular projection 19 of the center fitting 2 hits the stopper ring 96, the plate-like portion 98 cut out as the window notch 99 is obtained. The end surface 98a is pulled and peeled off from the flange portion 12. In the prior art, the end surface 97a of the bent portion 97 and the end surface 98a of the plate-like portion 98 are on the same plane. Therefore, the end surface 97a of the bent portion 97 is also turned up. As a result, the bent portion 97 gradually opens due to repeated stopper action, and the stopper fitting 94 can no longer function as a stopper. was there. Further, the strength of the flange portion 12 including the bent portion 97 is strong because it is caulked over the entire length of the flange portion 12 at a position away from the window notch 99, and conversely, it is weak near the window notch 99. In addition, the flange portion 12 on the side of the window notch 99 is likely to be warped, which makes it easier to turn up the end surface 97a of the bent portion 97.

  The present invention has been made in view of such a problem, and is a cylindrical type defense that can ensure the strength and durability of a bent portion that is a portion in which a stopper fitting having a window notch is caulked to a flange portion of an annular fitting. The purpose is to provide a vibration mount.

The present invention relates to an annular fitting in which a flange projecting outward is formed on the upper end of a cylindrical body, a center fitting provided above the center line of the annular fitting, and the annular fitting. A rubber member disposed between the center bracket and the center bracket, and a stopper bracket that functions as a stopper that limits the relative displacement of the annular bracket and the center bracket. A cylindrical portion having a substantially cylindrical shape, a stopper ring protruding from the upper portion of the cylindrical portion toward the inner peripheral side, and bent at the lower end so as to wrap around the outer edge of the flange portion, and are caulked and fixed to the flange portion. A bent portion and a plate-like portion continuous from the lower end of the cylindrical portion to the bent portion along the upper surface of the flange portion, and the bent portion, the plate-like portion, and the lower portion of the cylindrical portion Each circumferential direction one In the cylindrical elastic mount by forming a window cut-out for the water drain by cutting out a Tokoro,
A circumferential position portion of the flange portion corresponding to the window notch does not project a tongue portion provided so as to extend to the outer peripheral side from the outer edge of the other circumferential position portion. A cylindrical anti-vibration mount characterized in that it is bent into a cylindrical shape.

  According to the present invention, the circumferential position portion of the flange portion corresponding to the window notch is a radial portion extending from the circumference including the outer edge of the other circumferential position portion. Since it is configured to be bent so as not to protrude outward, the rigidity of the flange portion in the direction in which the flange portion is to be turned up can be increased, and thereby the strength and durability of the bent portion constituting the caulking portion Can be improved.

It is a perspective view which shows the conventional cylindrical vibration proof mount. It is sectional drawing which shows the conventional cylindrical vibration proof mount. It is a perspective view which shows the cylindrical vibration proof mount of embodiment which concerns on this invention. It is sectional drawing which shows the cylindrical vibration proof mount of embodiment which concerns on this invention. It is sectional drawing which shows the cylindrical vibration proof mount of other embodiment which concerns on this invention. It is sectional drawing which shows the cylindrical vibration-proof mount of further another embodiment which concerns on this invention.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 3 is a perspective view showing a cylindrical vibration-proof mount according to an embodiment of the present invention, and FIG. 4 is a cross-sectional view thereof. The cylindrical anti-vibration mount 10 includes an annular bracket 1 in which a flange portion 12 projecting toward the outer periphery is formed at the upper end of the cylindrical body portion 11, and a center that is spaced above the center line of the annular bracket 1. The metal fitting 2, the annular metal fitting 1, and the center metal fitting 2 are disposed between the metal fittings 1, 2. A stopper fitting 4 that functions as a stopper is provided. The stopper fitting 4 includes a cylindrical portion 5 having a substantially cylindrical shape, a stopper ring 6 that protrudes from the upper portion of the cylindrical portion 5 to the inner peripheral side, and the flange at the lower end. A bent portion 7 that is bent so as to wrap around the outer edge of the portion 12 and is caulked and fixed to the flange portion 12, and continues from the lower end of the tubular portion 5 to the bent portion 7 along the upper surface of the flange portion 12. It consists of a plate-shaped part 8 and a bent part , The plate portion 8, and constructed by cutting out each of the circumferential portion of the cylindrical portion 5 lower to form the window cutout 9 for drainage. Therefore, the edge of the window notch 9 extends over the bent portion 7, the plate-like portion 8, and the tubular portion 5.

  The center metal fitting 2 is attached to, for example, an engine via a stud bolt 28 screwed into a female screw portion 2b provided therein, while the annular metal fitting 1 is attached to the vehicle body side via an attachment bolt 26. In this case, the cylindrical vibration-proof mount 10 acts to suppress vibration transmitted from the engine to the vehicle body.

  Further, the center metal fitting 2 is formed with a convex portion 19 projecting in the outer peripheral direction, and the annular convex portion 19 with respect to the displacement of the annular metal fitting 1 and the center metal fitting 2 in the direction away from each other in the axial direction. This is limited by the stopper ring 12 coming into contact with the first shock absorbing rubber 13, and with respect to the displacement of the annular metal fitting 1 and the center metal fitting 2 in the direction approaching each other in the axial direction, the member 18 The stopper ring 12 is configured so as to be restricted by contacting with the second shock absorbing rubber 14, and further, the outer peripheral surface 2 a of the center metal fitting 2 with respect to the radial displacement between the annular metal fitting 1 and the center metal fitting 2. And the inner peripheral surface 6a of the stopper ring 6 are configured to limit this by contacting with the second shock absorbing rubber 14, and by restricting such a large displacement, durability It is possible to increase.

  The annular metal fitting 1, the center metal fitting 2, and the rubber member 3 can be formed easily by injecting and molding a rubber material after the metal fittings 1 and 2 are previously set in a mold. In addition, it is preferable that the first buffer rubber 13 and the second buffer rubber 14 vulcanized and bonded to the stopper fitting 4 are molded integrally with the stopper fitting 4 in the same manner.

  As shown in FIGS. 3 and 4, the cylindrical vibration-proof mount 10 of the present invention is characterized in that the circumferential position portion corresponding to the window notch 9 of the flange portion 12 is previously set in the other circumferential direction. The tongue portion 17, which is prepared so as to extend radially outward from the outer edge 16 of the position portion and thus provided to extend radially outward from the outer edge 16, has a radius greater than that of the outer edge 16. It is configured to be bent so as not to protrude outward in the direction.

  By bending the tongue portion 17 in this way, the circumferential position portion corresponding to the window notch 9 of the flange portion 12 does not protrude radially outward from the outer edge 16 of the remaining circumferential position portion of the flange portion 12. In addition to preventing the tongue 17 from interfering with the components arranged around the cylindrical vibration-proof mount 10, the bent portion increases the rigidity against the force of rolling up the flange. be able to.

  In the case of the example shown in FIGS. 3 and 4, the tongue portion 16 is bent at an angle of 90 degrees. However, the bending angle may not be 90 degrees. For example, as shown in FIG. In the case of the cylindrical vibration-proof mount 20 shown, this bending angle is set to about 180 degrees, and the bending direction may be either up or down.

  The embodiment shown in FIGS. 3 and 4 is a so-called liquid-sealed vibration isolator. In this embodiment, the annular metal fitting 1 below the rubber member 3 is liquid-tightly attached to the inside thereof. The partition member 23 is further provided, a membrane member 25 that is flexibly deformed is disposed on the opposite side of the partition member 23 to the rubber member 3, and a main liquid composed of a space surrounded by the rubber member 3 and the partition member 23. A liquid is enclosed in each of the chambers 21 and the sub liquid chambers 21 formed by spaces surrounded by the membrane member 25 and the partition member 23, and the main liquid chamber 21 and the sub liquid chamber 22 are formed in the partition member 23. The orifice 23 communicates via the orifice 24, and the liquid forms a narrow flow path as the volume of the main liquid chamber 21 changes due to the relative displacement of the annular fitting 1 and the center fitting 2 in the axial direction. Because it moves through It can be exhibited.

  The cylindrical vibration-proof mount of the present invention is not limited to such a liquid-filled vibration-proof device, and FIG. 6 is a cross-sectional view in which the same reference numerals are given to those having the same functions as those in FIG. It can also be applied to a cylindrical vibration-proof mount 30 that does not have a liquid chamber and that is vibration-proof only by the energy damping action of the rubber member 3, and in this case also, the window notch 9 of the flange portion 12 can be applied. The tongue portion 17 provided so as to extend outward in the radial direction from the outer edge 16 is bent at a circumferential position corresponding to the outer edge 16 so as not to protrude outward in the radial direction from the outer edge 16. .

  The cylindrical vibration-proof mount according to the present invention can be used as an engine mount or body mount for automobiles.

DESCRIPTION OF SYMBOLS 1 Ring metal fitting 2 Center metal fitting 2a Center metal outer peripheral surface 2b Female thread part 3 Rubber member 4 Stopper metal fitting 5 Cylindrical part 5a End surface of cylindrical part 6 Stopper ring 6a Inner peripheral surface of stopper ring 7 Bending part 7a Bending part End face 8 Plate-like part 8a End face of plate-like part 9 Window notch 10 Cylindrical vibration-proof mount 11 Cylindrical body part 12 Flange part 13 First shock-absorbing rubber 14 Second shock-absorbing rubber 15 String 16 In parts other than the window notch of the flange part Corresponding peripheral edge 17 tongue 18 member 19 annular convex 20 cylindrical vibration isolation mount 21 main liquid chamber 22 secondary liquid chamber 23 partition member 24 orifice 25 membrane member 26 mounting bolt 28 stud bolt 30 cylindrical vibration isolation mount

Claims (1)

An annular fitting formed with a flange portion projecting to the outer peripheral side at the upper end of the cylindrical body portion, a center fitting provided above the center line of the annular fitting at a distance, and the annular fitting and the center fitting And a rubber member that connects these metal fittings and a stopper metal that functions as a stopper that restricts the relative displacement of the annular metal fitting and the center metal fitting. The stopper metal fitting has a substantially cylindrical shape. A cylindrical part formed, a stopper ring protruding from the upper part of the cylindrical part toward the inner peripheral side, and a bent part that is bent at the lower end so as to wrap around the outer edge of the flange part and is caulked and fixed to the flange part And a plate-like portion that continues from the lower end of the cylindrical portion to the bent portion along the upper surface of the flange portion, and each circumferential direction of the bent portion, the plate-like portion, and the lower portion of the cylindrical portion Cut one place In cylindrical elastic mount by forming a window cutout for drainage you are,
A circumferential position portion of the flange portion corresponding to the window notch does not project a tongue portion provided so as to extend to the outer peripheral side from the outer edge of the other circumferential position portion. A cylindrical anti-vibration mount characterized by being bent into

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