JP2000074117A - Vibration isolating mount - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration isolating mount of reduced weight which has a good durability and allows simplification of a vulcanized molding die for rubber. SOLUTION: A vibration isolating mount includes a toe collect mechanism 5 and is structured so that a boring part 21 and an axial direction stopper 6 are provided on a rubber piece 4 located between an inner 2 and an outer cylinder 3, wherein the stopper 6 is configured so that an outer cylinder portion on the opposite side to the toe collect mechanism 5 with the inner cylinder 2 interposed is extended in the axial direction and a stopper rubber 4c is installed at the tip of the extension part 13, whereby a vulcanized molding die for rubber can be split up and down even if the boring part 21 exists, and it is possible to simplify the die structure, reduce the weight of the mount, and enhance its durability.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-vibration mount having a to collect mechanism used for a vehicle suspension or the like.

[0002]

2. Description of the Related Art Conventionally, a vibration isolating mount with a toe-collecting mechanism of this kind has been used for a rear suspension of an automobile. FIG. 6 is a plan view showing a rear suspension of the automobile, in which suspension arms 100 on the left and right sides are connected by a torsion beam 101, a wheel 104 is attached to an outer end side of an axle 103, and a tip connecting cylinder of the arm 100. Anti-vibration mount 105 connected to
Are connected to the vehicle side bracket 106 by bolts and nuts.

FIG. 7 is a sectional view of a conventional anti-vibration mount 105. The left and right anti-vibration mounts 105 have a center hole 108a.
A shaft member such as an inner cylinder 108 through which bolts pass, an outer cylinder 109 arranged around the inner member, an inner cylinder 108 and an outer cylinder 109
And a rubber-like elastic body 110 interposed between the anti-vibration mount 105 and an outer end of the anti-vibration mount 105.
Are formed.

[0004] The toe-collect mechanism 111 includes an inner cylinder 10
8, an inclined plate 112 is welded to the outside of a part of the outer end,
09 at the end of the tapered portion 1 facing the inclined plate 112.
13, the tapered portion 113 and the inclined plate 112
A rubber-like elastic body 110a is interposed between the suspension arm 100 and the shaft-like elastic body 110a, and a force (thrust force) in the axial direction (length direction of the inner cylinder: the same applies hereinafter) input from the suspension arm 100 to a cornering force or the like. The suspension arm 100 is dispersed in the direction perpendicular to the axis so as to exert a moment to guide the suspension arm 100 to the toe-in side.

In order to exhibit compliance steer by this torsion function, the spring constant of the rubber-like elastic body 110 must also be kept low. In order to suppress the displacement to a predetermined amount and improve the durability of the rubber, a stopper 115 for suppressing the axial displacement of the outer cylinder 109 to a predetermined amount in response to an axial thrust input is provided.

The stopper 115 is a plate-shaped stopper fitting 1 welded around the end of the inner cylinder 108.
17, a reinforcing member 118 welded to the inner cylinder 108 in parallel with the stopper member 17 and the stopper member 117 and the reinforcing member 11
And a stopper rubber 119 covering the outer cylinder 10.
A predetermined amount of gap 122 is held between the end flange 121 and the end flange 9.

The rubber-like elastic body 110 has an inner cylinder 10
8 are formed at a plurality of locations around the periphery of the shaft 8 so as to reduce the spring constant in the direction perpendicular to the axis, thereby improving ride comfort. The structure which raises is adopted.

[0008]

However, the conventional anti-vibration mount 105 has the disadvantage that it is expensive, the structure of the rubber vulcanization mold is complicated, and the weight of the product is heavy. That is, in the conventional anti-vibration mount 105, in order to improve the durability of the rubber-like elastic body 110 having a low spring constant and exhibiting the compliance characteristics, the outer cylinder 1
In addition, a stopper 115 is provided with a gap 122 from the end of the rubber-like elastic body 110 in order to reduce the spring constant in the front-rear direction (perpendicular to the axis) of the vehicle and enhance the ride comfort. A burring portion 120 is formed in the axial direction.

The opening direction of the gap 122 and the radius 12
Since the opening direction of 0 is a different direction, a rubber vulcanization mold at the time of manufacturing the anti-vibration mount requires a medium size for forming a hollow portion and a medium size for forming a gap in a stopper portion,
In addition, since the direction in which the middle mold is removed after the molding is different, there is a problem that the production of the product is complicated and the cost is high.

In addition, if the hollow portion 120 is to be formed deeply in order to make the spring constant in the axial direction as infinite as possible, the direction of removing the middle mold is different between the two, so that the clearance between the bottom portion 120a of the hollow portion 120 and the stopper 115 is provided. 122
And a thin film 123 is formed between them. In this thin film structure, when a large displacement load is applied, the thin film portion 123 often breaks, and this portion becomes a starting point of a crack, and the fracture / crack propagates to the rubber-like elastic body 110 on the main body side,
This causes the durability of the anti-vibration mount 105 to decrease.

Furthermore, the stopper 117 needs to have strength against a large load input in the left-right direction (axial direction) of the vehicle, and in order to reinforce this, is it necessary to provide a reinforcing member 118 separate from the stopper 117? Or stopper fitting 1
17 had to be large, and the weight of the anti-vibration mount was large. In addition, these stopper fittings 1
17 and the reinforcing fitting 118 must be welded to the outer peripheral surface of the inner cylinder 108, and a welding operation step is required, so that the manufacturing cost has been increased.

[0012]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the above-mentioned problems, and as a result, by changing the shape of the outer cylinder, the stopper metal welded to the inner cylinder as the shaft member and A vibration-proof mount that can reduce the manufacturing cost by simplifying the structure of the mold at the time of rubber vulcanization by eliminating the reinforcing bracket and reducing the weight has been achieved. In other words, the outer cylinder part opposite to the toe-collect mechanism is extended in the axial direction so that the outer cylinder has a stopper function to suppress the axial displacement of the outer cylinder to a predetermined amount. A configuration is adopted in which a stopper rubber is arranged at the tip of the set portion.

If such a configuration is adopted, the gap 122 between the stopper and the outer cylinder shown in FIG. 7 becomes unnecessary, and a middle mold for forming the gap becomes unnecessary. It can be manufactured by simply attaching a middle mold for forming a bulge to one of the molds and dividing the upper and lower parts after rubber vulcanization molding. Further, the stopper fitting and the reinforcing fitting can be eliminated, and the weight of the anti-vibration mount can be reduced. Furthermore, since the measure is to extend only a part of the outer cylinder, the number of parts is small and the manufacturing cost can be reduced.

The extension length of the outer cylinder on which the stopper is arranged is desirably set as long as possible in order to improve the durability of the rubber-like elastic body. However, from the viewpoint of maintaining the performance of the anti-vibration mount. Allows the outer cylinder to be displaced in the axial direction due to the axial input, exerts the stopper function of the stopper rubber, and at this time, the gap between the outer end of the outer cylinder taper portion on the toe correct mechanism side does not interfere with the vehicle bracket. It is desirable to do. Specifically, when the distance between the axially inner end of the outer cylinder and the vehicle bracket is 10 mm, the distance between the outer end side of the extended portion of the outer cylinder and the vehicle-side bracket is 10 mm or less,
Preferably, it is set to 9 mm, and a mode in which a stopper rubber of about 2 to 8 mm is fixed to the outer end can be exemplified.

Further, if a stopper flange is formed on the outer side in the direction perpendicular to the axis from the tip of the extending portion of the outer cylinder and the stopper rubber is fixed on the outer surface in the axial direction, the stopper rubber can be fixed in a wide range. In the axial direction. As the form of the flange in this case, when viewed from the axial direction, by adopting a sector shape centered on the axis center of the inner cylinder, the stopper rubber can be fixed in a wide range.

The toe-collecting mechanism may be a mechanism having a function of displacing an axial input from the suspension arm with respect to a cornering force or the like to exert a moment to guide the suspension arm to the toe-in side. Any shape may be used.For example, an inclined surface fixed to a part outside the end of the inner cylinder, and formed at the end of the outer cylinder in the axial direction and opposed to the inclined surface and inward of the inclined surface. A configuration having a tapered portion and a toe-collect rubber interposed between them can be exemplified.

Further, as a measure for further reducing the weight of the anti-vibration mount, instead of the inclined plate welded to the inner cylinder side, a resin protrusion having an inclined surface is integrally formed on the inner cylinder side. Can be adopted. In this case, since the resin is used as the material of the protruding portion, adjustment of the toe-collect amount can be easily performed by changing the shape.

Various materials can be used for the resin constituting the protruding portion. Nylon, polycarbonate (PC), polyphenylene oxide (PPO), polyoxymethylene (acetal resin POM), polybutylene terephthalate (PBT) can be used. ), Engineering plastics (hereinafter, abbreviated as “engineering plastics”) having excellent wear resistance, heat resistance, and mechanical strength can be employed.
In addition, special engineering plastics such as polyether sulfone (PES), polyether ketone (PEEK), polyphenylene sulfide (PPS), and polyimide (PI), which exhibit higher performance than engineering plastics, can be used as resin protrusions. is there.

The shape of the projecting portion has an inclined surface facing the tapered portion on the outer cylinder side, and affects the stopper function of the stopper portion located on the opposite side with respect to the shaft member such as the inner cylinder. If not, any shape may be used. For example, a protrusion that protrudes in a hump shape from the shaft member and has a fan shape when viewed from the axial direction can be adopted. The spread angle of this fan shape can be appropriately selected according to the to-collect performance, but is preferably in the range of 60 ° to 150 °.
The range of 00 to 120 ° is more preferable.

It is preferable that the protruding portion is formed wide in the axial direction so as to withstand a large load in the axial direction.
Specifically, there can be exemplified a structure having a right-angled triangular shape with a longitudinal sectional shape cut in the axial direction. Any fixing means may be employed as long as this protruding portion can be firmly fixed to a shaft member such as an inner cylinder. However, an axially wide cylindrical fixing portion integrally formed on the protruding portion is formed on the inner cylinder or the like. By adopting the configuration of fitting and fixing to the shaft member, even if a large load is applied from the axial direction,
Sufficient strength can be maintained. For fixing the projecting portion and the shaft member, various fixing methods such as fixing using shrinkage of the resin at the time of integral molding of the resin or bonding and press-fitting can be adopted. Further, when integrally molding the resin, a structure may be employed in which the fixing portion of the shaft member is provided with irregularities by knurling or the like, so that the protrusion can be prevented from coming off. If the resin protrusion is integrally formed with the shaft member such as the inner cylinder, the step of welding the inclined plate as in the conventional example of FIG. 7 can be omitted, and the manufacturing cost can be reduced.

The inclined surface of the protruding portion is an inclined surface descending from the axially outer side to the inner side of the shaft member such as the inner cylinder.
The tapered portion on the outer cylinder side facing this inclined surface is also an inclined surface parallel to this. As the inclination angle of this inclined surface,
30 ° to 60 °, which can be selected as appropriate according to the performance of the collect.
Is preferred.

The relationship between the stopper rubber and the rubber-like elastic body is such that the stopper rubber and the rubber-like elastic body are provided if the stopper rubber is arranged at the tip (outer end) of the extending portion on the outer cylinder side. However, any of a continuous structure and a separated structure can be adopted, and the present invention can be applied irrespective of the presence or absence of the axially curved portion of the rubber-like elastic body.

Here, as described above, the bulging portion refers to a hole or a gap extending at least at one end and extending in the axial direction. In the vibration-proof mount having the bulging portion, the bulging portion is formed of a rubber-like elastic material. Can be adopted, so that the spring constant in the direction perpendicular to the axis can be designed uniformly in the axial direction. Moreover, when a structure in which the bulging portion penetrates the rubber-like elastic body is adopted, a structure in which a thin film is formed between the bottom of the bulging portion and the gap on the stopper rubber side as in the conventional example shown in FIG. On the contrary, the thin film is not broken by a large load, and the durability of the rubber is improved.

The present invention is not limited to a cylindrical member such as an inner cylinder, but may be applied to a solid member in a solid state.
In addition, the tapered portion and the extended portion of the outer cylinder can be easily formed integrally with the outer cylinder member made of metal by press working or the like. In this anti-vibration mount, a protruding portion is integrally fixed to the end of the shaft member, and an unvulcanized rubber-like elastic body is interposed or fixed between the inner and outer cylinders, the toe correct portion, and the stopper portion, respectively. Molding is performed by vulcanizing and integrally bonding in a mold. Thereafter, it is preferable to apply a drawing process to the cylindrical portion of the outer cylinder to improve the durability of the rubber-like elastic body.

[0025]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 6, the anti-vibration mount according to the present embodiment is used by connecting the suspension arms 100 on both the left and right sides to a connecting cylinder at the front end of an arm of a rear suspension mechanism connected by a torsion beam 101. The structure is as shown in FIG.

FIG. 1 is a front view showing an anti-vibration mount mounted on a vehicle bracket, FIG. 2 is a longitudinal sectional view thereof, FIG. 3 is a right side view thereof, FIG. 4 is a left side view thereof, and FIG. It is BB sectional drawing. 2 to 5 show a form of the outer cylinder of the anti-vibration mount before drawing.

As shown in the figure, the basic structure of the anti-vibration mount 1 is as follows: an inner cylinder 2 as a shaft member, an outer cylinder 3 disposed around the inner cylinder, and an inner cylinder 2 and an outer cylinder 3 interposed therebetween. A rubber-like elastic body 4, a toe-collecting mechanism 5 provided partially outside the outer end of the inner cylinder 2, and a stopper 6 for regulating the axial displacement of the rubber-like elastic body 4. The mount 1 is disposed symmetrically at the distal ends of the left and right suspension arms 100.

The inner cylinder 2 is formed in a tubular shape, and a bolt 9 is inserted through a center hole 2a of the inner cylinder 2. As shown in FIG. 1, the inner cylinder 2 is attached to a U-shaped vehicle bracket 106 with a nut 10.

The outer cylinder 3 is made of a metal plate or pipe. The outer cylinder 3 has a straight tubular section 3a concentrically arranged around the inner cylinder 2 and a shaft of the tubular section 3a. The expansion portion 11 is formed on the outer end side in the direction via a concave portion 3b serving as a starting point of drawing.

The cylindrical portion 3a is subjected to a drawing process in the diameter reducing direction starting from the concave portion 3b after the vulcanization molding of the anti-vibration mount 1, whereby the cylindrical portion 3a is interposed between the cylindrical portion 3a and the inner cylinder 2. Preliminary compression is applied to the main rubber portion 4a of the rubber-like elastic body 4 thus formed. A suspension arm 1 is provided on the outer periphery of the cylindrical portion 3a.
00 of the connection cylinder 124 is press-fitted to the outside.

As shown in FIG. 1, the expanding portion 11 includes a tapered portion 12 of the toe correct mechanism 5 and an extended portion 13 of the stopper 6.
And a suspension arm 100 provided therebetween.
And a contact flange portion 14 that comes into contact with the axially outer end of the connection cylinder 124. The tapered portion 12 is formed in a part of the expanding portion 11 so as to expand in a trumpet shape outward in the axial direction, and a toe-collect-side flange 16 is formed by bending at a tip thereof outward in a direction perpendicular to the axis. ing.

The extending portion 13 has a tapered portion 1 with the inner cylinder 2 interposed therebetween.
On the side opposite to 2, it is formed in the shape of an arc having the same diameter as the cylindrical portion 3a, and is formed longer in the axial direction than the distal end flange 16 of the tapered portion 12, and is directed outward in the direction perpendicular to the axis at the distal end. The stopper flange 18 is formed by bending.

The contact flange portion 14 is formed between the tapered portion 12 and the extension portion 13 so as to rise outward from the concave portion 3b of the cylindrical portion 3a in a direction perpendicular to the axis. Flange 16 and extension 13
And an inclined flange 19. The expanded portion 11 is expanded by pressing the end of the pipe material of the outer cylinder 3 to form the tapered portion 12,
The extension 13 and the flanges 14, 16, 18 can be formed simultaneously.

The rubber-like elastic body 4 is set to have a low spring constant in order to improve the compliance characteristics when a lateral force such as a cornering force and a longitudinal force are applied. The rubber-like elastic body 4 is integrally fixed to the inner cylinder 2 and the outer cylinder 3 by vulcanization molding, and includes a main rubber part 4a interposed between the cylinder part 3a and the inner cylinder 2,
The toe-collect rubber portion 4b interposed between the tapered portion 12 and the protrusion 20 of the toe-collecting mechanism 5 and the stopper rubber portion 4c fixed to the stopper flange 18 of the extension portion 13 are formed continuously. ing.

The main rubber portion 4a is subjected to preliminary compression by drawing of the outer cylinder 3 after vulcanization molding, and has four rounded portions 21 around the inner cylinder 2. The bulging portion 21 is formed in an arc shape whose center is located outside the outer cylinder when viewed from the axial direction, and is formed to be long in the axial direction of the center portion (axial length of the cylindrical portion 3a). 21a
In the axial direction on both sides (1/3 of the axial length of the cylindrical portion 3a).
2) and the formed 21b. Abutting flange portion 14 and straightening portion 21 of extension portion 13
Has a structure in which the body rubber portion 4a is penetrated in the axial direction, and the curving portion 21 on the toe-collecting mechanism 5 side is formed halfway of the toe-collecting rubber portion 4b due to the projecting portion 20.

The toe-collect mechanism 5 disperses the axial force (thrust force) input from the suspension arm 100 to the cornering force or the like in the direction perpendicular to the axis, and exerts a moment to guide the suspension arm to the toe-in side. A tapered portion 12 on the outer cylinder side, a protrusion 20 having a hump-shaped inclined surface 21 fixed to the inner cylinder 2 and projected in a direction perpendicular to the axis;
And a toe correct rubber portion 4c interposed between the tapered portion 12 and the inclined surface 21.

The protruding portion 20 is made of a synthetic resin such as a nylon resin, preferably an engineering plastic. The protruding portion 20 is formed in a right-angled triangular shape with an axial longitudinal section so as to withstand a large load in the axial direction. 2 is integrally formed with a cylindrical fixing portion 22 that is wide in the axial direction (for example, 20 mm) and is fitted to the outer periphery of the second fixing member 22. The protruding portion 20 has an inclined surface 21 facing the tapered portion 12 on the outer cylinder side, and is approximately 100 ° when viewed from the axial direction.
It has a fan shape with an extension of ~ 120. Further, the inclined surface 21 of the protruding portion 20 is an inclined surface descending from the outside in the axial direction of the inner cylinder 2 toward the inside, and the tapered portion 12 on the outer cylinder side opposed to the inclined surface is also an inclined surface ( The inclination angle is 45 °). The angle of the inclined surface 21 and the angle of the tapered portion 12 are set according to the to-correct performance.

The to collect rubber portion 4b covers not only the space between the tapered portion 12 and the inclined surface 21 of the protruding portion 20 but also the protruding portion 20 and the fixing portion 22. Although the rubber of the rubber portion 4b is in contact with the rubber, the rubber of the toe correct rubber portion 4b may be separated from the vehicle bracket 106.

The stopper 6 is provided at the extension 13 of the outer cylinder 3.
And a stopper rubber portion 4c fixed to the axially outer surface of the stopper flange 18 of the extension portion 13.

As the length of the extending portion 13 of the outer cylinder 3, the axial displacement of the outer cylinder 3 due to the input in the axial direction is allowed, and the stopper function is exerted by the stopper rubber 4c. The outer end of the outer cylindrical tapered portion 12 on the side is set at a distance that does not interfere with the vehicle bracket 106. Specifically, the axial inner end 3c of the outer cylinder 3 and the vehicle bracket 10
6 is 10 mm, and the distance between the flange 18 of the extending portion 13 of the outer cylinder 3 and the vehicle-side bracket 106 is 9 mm.
Respectively, and 2 to 2 on the entire outer end side of the flange 18.
A stopper rubber 4c of about 8 mm is fixed.

The stopper flange 18 is formed in a fan shape with the center of the axis of the inner cylinder 2 as the center, and the stopper rubber 4c is fixed so that it is highest at the center of the flange surface and becomes lower toward both ends. ing.

The manufacture of the anti-vibration mount having the above-described structure is performed by press working with the tapered portion 12, the extended portion 13, and the flange 1.
Unvulcanized rubber constituting the rubber-like elastic body 4 is interposed between the outer cylinder 3 on which the projections 4, 16 and 18 are formed and the inner cylinder 2 to which the protruding portion 20 made of engineering plastic is fixed, and is vertically (axially). It is inserted into a split mold, a medium die for forming the burrs 21 and the like is installed, vulcanization molding is performed, and the inner and outer cylinders 2 and 3 and the rubber-like elastic body 4 are integrally molded. As a mold structure in this case, a stopper fitting and a reinforcing fitting on the inner cylinder side as in the conventional example shown in FIG. 7 are eliminated, and a part of the outer cylinder 3 is extended in the axial direction instead. Therefore, the mold structure can be simplified.

Therefore, even in the punch after vulcanization molding,
By simply dividing the upper and lower molds, a molded product of a vibration-proof mount provided with the to collect mechanism 5, the squeezing portion 21 and the stopper 6 can be easily obtained. The finished molded product does not have a stopper or the like, and the protruding portion is also a resin molded product. Therefore, the molded product is lightweight and can be manufactured at low cost. Further, this molded product is formed by a drawing machine using the cylindrical portion 3a of the outer cylinder 3.
Is reduced in the diameter reducing direction, and pre-compression is applied to the main rubber portion 4a, whereby the durability of the rubber can be improved. Also, since the upper and lower molds are divided, the durability of the rubber is improved without forming a thin film between the bulging portion and the gap on the stopper side as in the conventional product shown in FIG. Can be.

[0044]

As is apparent from the above description, according to the present invention, the outer cylinder portion opposite to the toe-collecting mechanism with the inner cylinder interposed therebetween is extended in the axial direction, and a stopper rubber is provided at the tip of the extended portion. The effect is that the rubber vulcanization mold can be simplified and the weight can be reduced. Further, in the structure in which the hollow portion is formed, the mold can be split vertically, so that a thin film cannot be formed as in the conventional example, and the durability of the rubber-like elastic body is improved.

[Brief description of the drawings]

FIG. 1 is a front view showing an anti-vibration mount according to an embodiment of the present invention, in which a vehicle bracket is assembled.

FIG. 2 is a longitudinal sectional view of the same.

FIG. 3 is a right side view of the same.

FIG. 4 is a left side view of the same.

FIG. 5 is a sectional view taken along line BB of FIG. 4;

FIG. 6 shows a rear suspension mechanism.

FIG. 7 is a cross-sectional view of a conventional anti-vibration mount.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vibration-proof mount 2 Inner cylinder 3 Outer cylinder 4 Rubbery elastic body 4a Main body rubber part 4b Toe correct rubber part 4c Stopper rubber part 5 To collect mechanism 6 Stopper 11 Expanding part 12 Taper part 13 Extension part 14 Contact flange 16 Toe-collect flange 18 Stopper flange 20 Projecting part 21 Straightening part 22 Fixed part 100 Suspension arm 106 Vehicle bracket 124 Connecting cylinder

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toshihiro Kakimoto 1-17-18 Edobori, Nishi-ku, Osaka-shi, Osaka Toyo Tire & Rubber Co., Ltd. 18 Toyo Tire & Rubber Co., Ltd. (72) Inventor Moriya Takeshita 1-17-18 Edobori, Nishi-ku, Osaka City, Osaka Prefecture Toyo Tire & Rubber Co., Ltd. (72) Inventor Masao Tajima 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Inside the Automobile Co., Ltd. (72) Inventor Kazuhiro Horikoshi 1 Toyota Town, Toyota City, Aichi Prefecture Inside Toyota Automobile Co., Ltd. (72) Inventor Hideyuki Kobayashi 4-50 Hosoyacho, Toyota City, Aichi Prefecture Inside Toyota Iron Works Co., Ltd. F term (reference) 3D001 AA17 AA18 BA76 DA08 DA12 3J059 AA04 AB12 AD05 AE04 BA42 BA73 BA76 BB04 BD05 DA14 EA03 EA06 GA02

Claims (6)

[Claims] A shaft member, an outer cylinder arranged around the shaft member,
A rubber-like elastic body interposed between the shaft member and the outer cylinder, a protrusion with an inclined surface integrated outside a part of an end of the shaft member, and an end of the outer cylinder A toe-collecting mechanism comprising a tapered portion formed opposite to the inclined surface, and a toe-collect rubber portion interposed between the tapered portion and the inclined surface and continuous with the rubber-like elastic body. A vibration isolator mount provided with a stopper for restricting axial displacement of the rubber-like elastic body, wherein the stopper is a part of an outer cylinder on the opposite side of the toe-collect mechanism with respect to the shaft member. A vibration-proof mount, which extends in the axial direction of the shaft member, and a stopper rubber portion is disposed at a tip of the extension portion. 2. The anti-vibration mount according to claim 1, wherein the extension of the outer cylinder is set to a length allowing the axial displacement of the outer cylinder. 3. The rubber-like elastic body according to claim 1, wherein a curving part is formed at a plurality of locations, and a curving part on the side of the extended portion of the outer cylinder is formed to penetrate the rubber-like elastic body. Anti-vibration mount. 4. The anti-vibration mount according to claim 1, wherein a stopper flange is formed outwardly in a direction perpendicular to the axis from the tip of the extension of the outer cylinder, and the stopper rubber is fixed to the flange. . 5. The anti-vibration mount according to claim 1, wherein said projecting portion is made of a synthetic resin. 6. The anti-vibration mount according to claim 5, wherein said projecting portion is made of engineering plastic.