JP2001221286A - Vibration-proofing mount - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration-proofing mount in which a positioning is easy and a load of an adhesive end surface can be reduced. SOLUTION: An inner cylindrical fitting 1 connected to an engine and an outer cylindrical fitting 2 connected to a vehicle body are opposed each other and a vibration-proofing rubber body 3 is disposed therebetween. The vibration- proofing rubber body 3 comprises a body rubber portion 31 and a pair of leg portions 32, 33 of which a portion is radially extended and an engagement portions 32a, 33a are provided on an extended end portions of the leg portions 32, 33. At the time of press-fitting, the engagement portions 32a, 33a are convex/ concave-engaged with recessed portions 21, 22 of an inner periphery surface of the outer cylindrical fitting 2. A positioning and an assembling are facilitated by engaging and fixing the engagement portions 32a, 33a and the recessed portions 21, 22. A reliability is enhanced by reducing a distortion.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an anti-vibration mount such as an engine mount.

[0002]

2. Description of the Related Art FIG. 6 shows a general structure of a conventional engine mount, in which a cylindrical inner cylinder fitting 91 and an outer cylinder fitting 92 are arranged substantially concentrically, and these inner and outer cylinder fittings 91 and 92 are arranged.
An anti-vibration rubber body 93 is provided between the two. The anti-vibration rubber body 93 is
A main body rubber portion 94 surrounding the outer periphery of the inner cylinder fitting 91, and a pair of leg portions 95, 96 extending outward from the main body rubber portion 94.
And the extended end faces of the pair of leg portions 95 and 96 are
2 is fixedly joined to the inner peripheral surface.

[0003] The vibration-proof rubber member 93 is usually formed integrally with the outer periphery of the inner cylinder fitting 91. Assembling is performed by press-fitting this integrally molded product into the outer cylinder fitting 92 and bringing the end surfaces of the legs 95 and 96 into close contact with the inner peripheral surface of the outer cylinder fitting 92.
Both are adhered and fixed with an adhesive previously applied to the end surfaces of the legs 95 and 96.

[0004]

However, in the engine mount having the above-described structure, it is not easy to position the anti-vibration rubber body 93 when press-fitting it into the outer cylinder fitting 92. Moreover,
When the end surfaces of the legs 95 and 96 are pressed against the inner peripheral surface of the outer cylinder fitting 92 in order to ensure the adhesion, the repulsive force causes the pair of legs 9 to be pressed.
Since the members 5 and 96 try to escape to the outside, they are likely to be misaligned, and a high load is applied to the bonding end face, particularly the edge, and distortion is likely to occur. Further, since it is necessary to fix with a jig until the bonding is completed, there is a problem that the assembling work is troublesome.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to facilitate positioning during assembly, prevent displacement, facilitate assembly, and reduce the high load on the bonded end surface. It is to provide an anti-vibration mount.

[0006]

According to a first aspect of the present invention, there is provided an anti-vibration mount connected to one of a base and a vibrating body, and connected to the other of the base and the vibrating body. A second metal fitting is disposed facing the second metal fitting, and a vibration-proof rubber body integrally provided on the surface of the first metal fitting is extended to form the second metal fitting.
It is joined to the metal fittings. Then, a concave portion or a convex portion for positioning is provided on the surface of the second metal fitting to which the extending end surface of the vibration isolating rubber member is joined, and the concave portion is provided on the extending end surface of the vibration isolating rubber member. Alternatively, a fitting portion is provided which fits the protrusion and recess and protrusion.

According to the above configuration, the positioning can be easily performed by fitting the fitting portion of the vibration-proof rubber body into the concave portion or the convex portion provided in the second metal fitting. In addition, even if the vibration-proof rubber member is pressed, a positional deviation hardly occurs. Therefore, the assembling workability is improved and the distortion of the bonded end face can be reduced, so that the quality is improved.

[0008] More specifically, the first metal fitting is an inner cylindrical metal fitting having the vibration-proof rubber member joined to the outer periphery thereof, and the second metal fitting is a substantially cylindrical outer cylindrical material. It can be suitably applied to a configuration using a metal fitting. The anti-vibration rubber body is composed of a main body rubber part surrounding the inner cylindrical metal part, and a pair of legs extending a part of the main body rubber part in a radial direction, and the inner cylindrical metal part is connected to the outer cylindrical metal part. And a pair of legs are joined to the outer cylinder fitting. And the above-mentioned effect is acquired by fitting and fixing the above-mentioned fitting part provided in the above-mentioned pair of leg parts to the above-mentioned concave part or convex part provided in the inner skin of the above-mentioned outer metal fitting.

Alternatively, as in the invention of claim 3, the first metal fitting is a substantially V-shaped flat upper metal fitting, and the second metal fitting is provided on both left and right ends of the left and right sides of the upper metal fitting. As a lower metal fitting having an inclined surface opposed to the above, the vibration-proof rubber members provided on both right and left sides of the upper metal fitting may be extended in a block shape and joined. The same effect can be obtained by providing the fitting portion on the extended end surface and the concave portion or the convex portion on both inclined surfaces of the lower metal fitting, and fitting and fixing both.

More specifically, as in the invention of claim 4, the extended end of the vibration-proof rubber member is formed as the fitting portion, and the surface of the second metal fitting is provided with the vibration-proof rubber member. It is possible to provide a configuration in which the concave portion is provided along the shape of the extended end portion, and both are fitted.

Alternatively, as in the invention of claim 5, a protrusion is provided on the extending end surface of the vibration-proof rubber member to form the fitting portion, and the second metal fitting has a shape corresponding to the protrusion. It is also possible to adopt a configuration in which the above-mentioned concave portion is provided.

According to a sixth aspect of the present invention, in the configuration of the second aspect, the concave portion is formed on the inner peripheral surface of the outer cylindrical member from the press-fit side end surface of the vibration isolating rubber body to the other end side. The bottom surface is inclined upward from the press-fit side toward the other end. The leg portion serving as the fitting portion has an end face inclined downward from the press-fit side to the other end side along the bottom surface shape.

According to the above construction, when the vibration-proof rubber body is pressed into the outer cylinder fitting, the bottom surface serves as a receiving surface,
The adhesive applied to the surface of the fitting portion can be prevented from flowing out from the other end. Further, the adhesion between the fitting portion and the bottom surface is increased, and the strength of the bonding surface in the press-fitting direction is improved.

According to a seventh aspect of the present invention, in the configuration of the fourth aspect, the extending end portion of the vibration isolating rubber member serving as the fitting portion is formed to have a substantially convex cross section, and the surface of the second metal fitting is formed. A holding portion that protrudes inward from an opening edge and is in close contact with an upper surface of a side portion of the fitting portion is provided in the formed concave portion.

According to the above configuration, by fitting the fitting portion into the concave portion, the fitting portion can be tightly held in the concave portion and a necessary pressure can be applied to the bonding surface. It is not necessary to fix with a jig or the like, and the assembling becomes easier.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a vehicle engine mount will be described below with reference to the drawings. In FIG. 1, the engine mount has an anti-vibration rubber body 3 disposed between an inner cylinder 1 as a first metal and an outer cylinder 2 as a second metal arranged concentrically. The outer cylinder 2 is usually held in a cylindrical bracket (not shown) connected to a vehicle body (not shown) as a base, and the inner cylinder 2
Is connected to an engine (not shown) as a vibrating body by a shaft (not shown) inserted into the cylinder.

As shown in FIG. 2A, the vibration-isolating rubber body 3 includes a main rubber portion 31 surrounding the outer periphery of the inner cylindrical member 1 and a pair of radially outwardly extending members from the main rubber portion 31. Leg 3
2, 33. The inner cylindrical metal fitting 1 is configured such that the outer shape of the main rubber part 31 is circular (FIG. 2A), the thickness is thicker at the center in the axial direction, and becomes gradually thinner toward both ends (FIG. 2B). Are integrally formed on the outer peripheral surface by vulcanization bonding.
The pair of legs 32 and 33 extend from both sides of the main rubber part 31 in a substantially figure-eight shape (FIG. 2A), and the extended ends thereof are formed into the inner peripheral surface shape of the outer cylinder fitting 2. The fitting portions 32a and 33a are formed in a shape of an arc along the shape.

As shown in FIG. 1, on the inner peripheral surface of the outer cylinder fitting 2,
Concave portions 21 and 22 extending from one end surface to the other end surface are formed. The recessed portions 21 and 22 are respectively leg portions 32,
33 are fitted into the concave portions 21 and 22 when the vibration-proof rubber body 3 is press-fitted.
a and 33a are fitted and held.

The mounting of the engine mount having the above structure is as follows.
The following procedure is performed. First, the inner cylinder 1 and the vibration-isolating rubber body 3 are integrally formed, and the fitting portions 32a, 3
An adhesive is previously applied to the surface 3a. This integrally molded product is pressed into the outer tube fitting 2 and the concave portions 21, 2,
The fitting portions 32a and 33a are fitted and bonded to 2 respectively.

According to the above configuration, the positioning at the time of press-fitting is easily performed by the recessed portions 21 and 22 provided in the outer cylinder fitting 2. Moreover, the fitting portions 32a, 33 of the vibration-proof rubber body 3
Since the position is fixed by the fitting of the recesses 21 and 22 with a, the positional deviation at the time of bonding can be prevented. Further, since the end surfaces and side surfaces of the fitting portions 32a and 33a are respectively joined to the opposing surfaces of the recessed portions 21 and 22, instead of joining only one surface as in the related art, the adhesive strength is improved, and Since distortion is also reduced, reliability is improved. Therefore, the assembling workability is improved, the production is easy, and a high-quality and highly reliable engine mount can be obtained.

Here, as shown in FIG. 3 (a), the concave portions 21 and 22 of the
The fitting portion 32 of the leg portions 32, 33 is formed so as to be inclined upward from the end face on the press-fit side toward the other end.
The end faces a and 33a may be shaped so as to be inclined downward in the press-fitting direction. In this case, the recess 2 is formed at the time of press-fitting.
The bottom surfaces of the fitting portions 32a, 33 serve as receiving surfaces.
It is possible to prevent the adhesive 34 applied to a from being pushed out and flowing out. Further, the adhesiveness of the joint is enhanced, and the adhesive strength in the press-fitting direction is improved.

In addition to the configuration shown in FIG. 3A, as shown in FIG. 3B, a projection 35 can be provided along the edge of the fitting portion 32a, 33a in the press-fit direction. In this configuration,
When the anti-vibration rubber body 3 is press-fitted, the fitting portions 32a and 33a and the concave portions 21 and 22 are fitted in a Z-shape, and the projection 35 serves as a receiving portion to prevent displacement at the time of curing. The effect of preventing the outflow of the agent 34 is improved.

FIG. 4 shows a second embodiment of the present invention. In this embodiment, as shown in FIG. 4A, circular projections are provided at the center of the end surfaces of the legs 32, 33 of the vibration-isolating rubber body 3 to form fitting portions 32b, 33b. On the other hand, the outer tube fitting 2 is provided with circular through holes 23 and 24 as concave portions corresponding to the fitting portions 32b and 33b. And
As shown in FIG. 4B, the fitting portion 3 is formed by press-fitting the inner cylindrical fitting 1.
By fitting the 2b and 33b into the through holes 23 and 24, positioning can be easily performed. Also, the legs 32, 33
Is fixed at a predetermined position, and a similar effect of facilitating the bonding and reducing the distortion of the bonding end face can be obtained.

As described above, the fitting portion of the vibration-proof rubber member 3 and the recessed portion of the outer tube 2 only need to be able to be fitted and fixed in position, and the shape is not particularly limited. In addition, the first,
In the two embodiments, the outer cylindrical fitting 2 is provided with a concave portion. However, the outer cylindrical fitting 2 is provided with a convex portion, and the leg portions 32 and 33 of the vibration-proof rubber body 3 are provided with the convex portions. It is also possible to provide a concave portion that fits with the concave and convex to form a fitting portion.

FIG. 5 shows a third embodiment in which the present invention is applied to a rear mount of an engine. As shown in FIG. 5A, in the present embodiment, the rear mount includes an upper metal fitting 4 as a first metal fitting, a lower metal fitting 5 as a second metal fitting, and a space between these metal fittings 4 and 5. It has a pair of anti-vibration rubber bodies 61 and 62 arranged. The upper bracket 4 is formed of a substantially V-shaped flat plate, and is connected to an engine (not shown) through mounting holes 43 provided at upper end portions of left and right side surfaces 41 and 42. The lower metal fitting 5 has a flat plate shape, and left and right end portions are inclined surfaces 51 and 52 facing left and right side surfaces 41 and 42 of the upper metal fitting 4 respectively. The lower metal fitting 5 has a plurality of mounting holes 5 provided at the center.
At 3, it is connected to a vehicle body (not shown).

The left and right side surfaces 41 and 42 of the upper metal fitting 4 are integrally provided with block-shaped anti-vibration rubber members 61 and 62, respectively, on the surfaces facing the inclined surfaces 51 and 52, respectively. These anti-vibration rubber bodies 61 and 62 are provided on the inclined surface 51 of the lower metal fitting 5,
52, and the extension ends thereof have inclined surfaces 51, 5
It has fitting portions 61a and 62a along two shapes. On the other hand, as shown in FIG. 5B, the concave portions 5 which are fitted into the fitting portions 61a, 62a with irregularities are formed on the inclined surfaces 51, 52 of the lower metal fitting 5.
1a and 52a are formed.

Also in the above-described configuration, the same effect of facilitating positioning and joining and fixing can be obtained by fitting the fitting portions 61a and 62a with the concave portions 51a and 52a at the time of assembly. In the above basic configuration, the lower metal fitting 5
Of course, it is also possible to form convex portions on the inclined surfaces 51 and 52 and concave portions on the left and right side surfaces 41 and 42 of the upper metal fitting 4 to form fitting portions.

FIG. 6 shows a fourth embodiment of the present invention.
The basic configuration of this embodiment is the same as that of the first embodiment shown in FIG. 1, and the following description focuses on the differences. As shown in FIG. 6, in the present embodiment, the extending ends of the legs 32, 33 of the vibration isolating rubber body 3 to be the fitting portions 32a, 33a are formed to have a substantially convex cross section. On the other hand, a concave portion 2 formed in the outer cylinder fitting 2
The holding portions 1 and 22 project inwardly from the opening edges of the concave portions 21 and 22 so as to have a shape corresponding to the fitting portions 32a and 33a, and are held in close contact with the upper surfaces of the side portions of the fitting portions 32a and 33a. Parts 21a and 22a are provided. As a result, the outer edges of the fitting portions 32a, 33a are closely held in the recesses 21, 22.

According to the above-described structure, the vibration isolating rubber body 3 is press-fitted into the outer tube fitting 2 and the fitting portions 32a, 33a are press-fitted into the recessed portions 21, 22 at the same time.
a can be closely held in the recessed portions 21 and 22. Then, a pressure that presses the fitting portions 32a and 33a against the bonding surface α can be applied to regulate the movement until the bonding is completed, so that good bonding can be obtained without fixing with a jig.

[Brief description of the drawings]

FIG. 1 is an overall sectional view of an engine mount showing a first embodiment of the present invention.

FIG. 2 (a) is a front view of an anti-vibration rubber body, and FIG. 2 (b) is (a)
It is AA sectional drawing of.

FIG. 3A is a cross-sectional view showing another example of the shape of the fitting portion of the vibration-proof rubber body and the concave portion of the outer cylinder fitting, and FIG. 3B is still another example of the fitting portion of the vibration-proof rubber body. It is sectional drawing which shows an example.

FIGS. 4A and 4B show a second embodiment of the present invention, wherein FIG. 4A is an overall configuration diagram of an engine mount, and FIG.

FIGS. 5A and 5B show a third embodiment of the present invention, wherein FIG. 5A is an overall sectional view of an engine rear mount, and FIG.

FIG. 6 is an overall sectional view of an engine mount showing a fourth embodiment of the present invention.

FIG. 7 is an overall sectional view of a conventional engine mount.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Inner cylinder metal fitting (1st metal fitting) 2 Outer cylinder metal fitting (2nd metal fitting) 21 and 22 Concave part 3 Anti-vibration rubber body 31 Main body rubber part 32 and 33 A pair of leg parts 32a and 33a Fitting part 4 Upper metal fitting (First metal fittings) 41, 42 Left and right side faces 5 Lower metal fittings (second metal fittings) 51, 52 Inclined surfaces 51a, 52a Recessed parts 61, 62 Vibration-proof rubber bodies 61a, 62a Fitting parts

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Haruhiko Nonogaki 1 Ogatachi, Kasuga-cho, Nishikasugai-gun, Aichi F-term (reference) in Toyoda Gosei Co., Ltd. 3J048 AA01 BA04 BA18 DA02 EA01 3J059 AD02 AD03 BA42 BA74 BD09 CA08 CC01 EA13 GA09

Claims (7)

[Claims] A first metal fitting connected to one of the base and the vibrating body and a second metal fitting connected to the other of the base and the vibrating body facing each other; In a vibration-proof mount in which an anti-vibration rubber body integrally provided on a surface of a metal fitting is extended and joined to the second metal fitting, the extension end surface of the vibration-proof rubber body is positioned on the surface of the second metal fitting to be joined. A vibration-reducing mount provided with a concave portion or a convex portion for use, and a fitting portion which is fitted on the extended end surface of the vibration-proof rubber body with the concave portion or the convex portion. . 2. The method according to claim 1, wherein the first metal fitting is an inner cylindrical metal fitting having the outer periphery and the vibration isolating rubber body joined thereto, and the second metal fitting is a substantially cylindrical outer cylindrical metal fitting. The main body rubber portion surrounding the inner cylinder fitting and a pair of legs formed by extending a part of the main body rubber portion in the radial direction, the fitting portion being attached to the pair of legs, the outer cylinder fitting The anti-vibration mount according to claim 1, wherein the concave portion or the convex portion is provided on an inner peripheral surface of the mount. 3. The first metal fitting is a substantially V-shaped flat upper metal fitting, and the second metal fitting is a lower part having left and right end portions having inclined surfaces facing left and right sides of the upper metal fitting. As the metal fittings, the anti-vibration rubber members provided on both left and right sides of the upper metal fitting are extended in a block shape, and the fitting portions are provided on the extended end surfaces thereof, and the concave portions or convex portions are provided on both inclined surfaces of the lower metal fittings. The anti-vibration mount according to claim 1, wherein the mount has a shape. 4. An extended end portion of the vibration-proof rubber body is formed as the fitting portion, and the concave portion is provided on the surface of the second metal fitting along the shape of the extended end portion of the vibration-proof rubber body. The anti-vibration mount according to claim 1. 5. A projection is provided on an extended end surface of the vibration-proof rubber body to form the fitting portion, and the second metal fitting is provided with the concave portion having a shape corresponding to the projection. 4. The anti-vibration mount according to any one of items 3 to 3. 6. An inner peripheral surface of the outer cylinder fitting is formed with the concave portion extending from the press-fit side end surface to the other end side of the vibration-proof rubber member, and has a bottom surface from the press-fit side to the other end side. The vibration isolator according to claim 2, wherein the end portion of the leg portion serving as the fitting portion is inclined downward from the press-fit side to the other end side along the bottom surface shape. 7. An extension end portion of the vibration-proof rubber member serving as the fitting portion is formed to have a substantially convex cross section, and the concave portion formed on the surface of the second metal fitting is formed with an opening edge. 5. The vibration damping device according to claim 4, further comprising a holding portion projecting inward and closely contacting an upper surface of a side portion of the fitting portion.