JPH0415331A - Vibrationproof mount - Google Patents

Abstract

PURPOSE:To prevent an outer cylinder from being drawn out by providing penetrating grooves in at least either of the inner circumference of a bracket or the outer periphery of an outer cylinder in a vibrationproof mount where the outer cylinder made of a resin, having an inner cylinder via vibrationproof rubber is inserted under pressure into the bracket. CONSTITUTION:An outer cylinder 2 made of a synthetic resin and containing therein an inner cylinder 4 via vibrationproof rubber 3 is inserted under pressure into the hole 1a of a bracket 1. There are provided a penetrating groove 7a for an adhesive along the circumference in the inner surface of the hole 1a, and penetrating groove 7b in the axial direction. Furthermore, two adhesive injecting ports 8 are formed in a boss portion. The adhesive is injected into the grooves so that the outer cylinder can be prevented from being drawn out.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a vibration-proof mount that is particularly suitable for a vehicle engine mount.

(Prior art) As a vibration isolating mount, a vibration isolating rubber is provided inside a cylindrical outer cylinder so that it can be deformed within a certain range, and the inner cylinder is passed through the vibration isolating rubber and fixed in a bracket. A so-called cylindrical anti-vibration mount is often used.

The one disclosed in Japanese Utility Model Application Publication No. 1-165341 is one example, and the one shown in FIG. 6 is also an example of a conventional device.

Circular 1 is, for example, a bracket that is fixed to the vehicle body, and 1
2 is a synthetic resin outer cylinder that is press-fitted into the hole la; 3 is a vibration-proofing rubber provided inside the outer cylinder 2 so that it can be deformed within a certain range; 4 is this vibration-proofing material. It is an inner cylinder provided through the rubber 3, and is connected to, for example, an engine by a bolt or the like passing through the inner cylinder 4. Further, reference numeral 5 denotes a stopper made of the same material as the vibration-proof rubber provided in the outer cylinder 2 in order to limit the deformation of the vibration-proof rubber 3 within a certain range.

(Problem to be Solved by the Invention) However, as shown in FIG. 6, when the synthetic resin outer cylinder 2 is press-fitted into the hole la of the bracket 1 made of metal such as aluminum alloy, the synthetic resin Since the outer cylinder 2 made of aluminum has low rigidity, there is a risk that the outer cylinder 2 may come out of the hole la of the bracket 1 when used on an actual vehicle.

(Means for Solving the Problems) In order to solve the above-mentioned problems, in the present invention, an inner cylinder is provided inside a resin outer cylinder with anti-vibration rubber interposed therebetween, and the bracket is press-fitted and fixed. In the cylindrical press-fit type anti-vibration mount, an adhesive penetration groove is provided on at least one of the outer periphery of the outer cylinder or the inner periphery of the bracket, and the adhesive is injected to form the anti-vibration mount.

Further, an adhesive injection hole communicating with the adhesive penetration groove described above is provided in the bracket to constitute a vibration-proof mount.

(Function) As described above, in the present invention, since an adhesive permeation groove is provided in the press-fitting part of the cylindrical press-fit type anti-vibration mount, by injecting the adhesive into this groove, the outer cylinder press-fitted into the bracket is can be prevented from being removed.

Furthermore, if the bracket is provided with an adhesive injection hole that communicates with the adhesive penetration groove described above, the adhesive can be easily injected through this injection hole.

(Example) The present invention will be described in detail below with reference to FIGS. 1.2.3 and 4.5. In the figure, the same reference numerals as those mentioned above indicate equivalent parts.

That is, in the figure, 1 is a bracket to be fixed to the vehicle body, 1a is a hole provided in the boss part, 2 is a synthetic resin outer cylinder that is press-fitted into the hole la, and 3 is a deformation area inside the outer cylinder 2. Anti-vibration rubber 4 is provided to allow vibration-isolating rubber 3
It is an inner cylinder provided through the inner cylinder 4, and is connected to, for example, an engine by a bolt or the like passing through the inner cylinder 4. Further, reference numeral 5 denotes a stopper provided within the outer cylinder 2 in order to limit the deformation of the vibration isolating rubber 3 within a certain range.

FIGS. 1(a) and 1(b) show an embodiment of the present invention. In this case, the adhesive penetrates in a ring shape along the circumference of the inner surface of the hole 1a of the bracket 10 into which the outer cylinder 2 is press-fitted. In addition to providing the groove 7a, a linear penetration groove 7b is provided in the axial direction, and adhesive injection holes 8 communicating with the penetration groove 7a are provided at two locations on the boss portion of the bracket I. The outer cylinder 2 is reliably fixed to the bracket 1 by injecting the agent.

Further, FIG. 2 shows another embodiment in which adhesive penetration grooves 17a and 17b are distributed on the outer circumferential surface of the outer cylinder 2, and the one in FIG. This is an example in which a spiral groove 27c is provided on the outer peripheral surface of the cylinder 2 as an adhesive penetration groove. In the examples shown in FIGS. 2 and 3 as well, injection holes are provided in the bracket 1 to inject the adhesive.

Furthermore, it is also possible to combine the example of FIG. 1 and the example of FIGS. 2 and 3 to form adhesive injection grooves on both the bracket and the outer periphery.

Also, FIG. 4 shows another embodiment of the present invention, which is an adhesive injection groove? a, In addition to 17a, there is a protrusion 9a on the outer peripheral surface of the outer cylinder 2, which is one of the fitting parts between the outer cylinder 2 and the bracket 1.
, 9b are provided in a protruding manner, and grooves 10a, 10b are provided on the inner circumferential surface of the hole 1a of the bracket 1, which is fitted with the protrusions 9a, 9b.

Although just one set of projections and grooves has the effect of keeping the press-fitting angle of the outer cylinder 2 constant, two sets of projections 9a, 9b and grooves 10a, 10b each have different shapes as in the embodiment shown in FIG. By changing the arrangement, it is possible to eliminate the error of press-fitting the outer cylinder 2 into the bracket 1 upside down or with the front and back reversed.

FIG. 5 shows another embodiment of the present invention, which includes an adhesive injection groove 17a of the outer cylinder 2 and a displacement stopper 1.
1 is made of the same material as the outer cylinder 2 made of synthetic resin and integrally bulged into the outer cylinder 2, and a part of these stoppers is provided with a slit 12 from the outer peripheral surface of the outer cylinder 2 toward the center. It is something that

In this case, the elastic deformation of the slit 12 ensures press-fitting, and furthermore, the adhesive enters the slit and becomes fixed, thereby reliably maintaining the press-fitting state.

(Effects of the Invention) As described above, in the present invention, the adhesive penetration grooves 7a, 7b, and 7c are provided in the press-fitting part of the cylindrical press-fit type vibration-proof mount. It is possible to prevent the outer cylinder 2 that has been press-fitted into the inside from being pulled out.

Further, when the bracket 1 is provided with an adhesive injection hole 8 that communicates with the adhesive penetration grooves 7a, 7b, and 7c described above,
Adhesive can be easily injected through this injection hole 8.

[Brief explanation of drawings]

Fig. 1(a) is a front view showing an example of the vibration isolating mount of the present invention, Fig. 1(b) is a view taken in the direction of arrow A, and Fig. 2 is a perspective view showing an example in which penetration grooves are provided on the outer peripheral surface of the outer cylinder. Figure 3 is a perspective view of an outer cylinder provided with a spiral penetration groove, Figure 4 is a front view showing another embodiment of the vibration isolating mount of the present invention, and Figure 5 is another embodiment of the vibration isolating mount of the present invention. FIG. 6(a) is a front view showing a conventional anti-vibration mount, and FIG. 6(a) is a view in the direction of arrow B. 1... Bracket 2... Outer tube 3... Vibration isolating rubber 4... Inner tube 5... Stopper 7a 7b, 17a, 17b 8... Adhesive injection hole 10a, 1Ob-groove 12. ··slit

Claims (1)

[Claims] 1. In a cylindrical press-fit vibration isolation mount in which an inner cylinder is provided inside a resin outer cylinder with a vibration isolating rubber interposed therebetween, the cylindrical press-fit vibration isolating mount is press-fitted and fixed into a bracket, and A vibration-proof mount characterized in that an adhesive penetration groove is provided on at least one of the inner circumferences of the bracket, and adhesive is injected into the bracket. 2. A vibration-proof mount, characterized in that the bracket is provided with an adhesive injection hole communicating with the adhesive penetration groove according to claim 1.