JPH05346135A - Liquid enclosed vibration proof supporting device - Google Patents

Abstract

PURPOSE:To provide a liquid enclosed vibration proof supporting device where the structure is simple, the manufacture is easy, and the spring constant is low in the whole medium to high frequency range. CONSTITUTION:In a conventional liquid enclosed vibration proof supporting device where a cylindrical rubber elastic member 10 provided with a plurality of recessed parts 14 which are open to the outer circumference in a separate manner is mounted on the outer circumference of an inner cylinder 12 in a stretching manner, the liquid is filled in the space between the recessed parts 14 and an outer cylinder is fitted in the outer circumference of the rubber elastic material 10, a communicating passage 34 is formed between the recessed parts 14, and the liquid enclosed in the recessed parts 14 is made movable; the rubber elastic member 10 is directly inserted into a bracket 28 to hold this liquid enclosed vibration proof supporting device, and the bracket 28 serves as the outer cylinder.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid-sealing anti-vibration supporting device used for an automobile engine mount or the like.

[0002]

2. Description of the Related Art Recently, liquid-sealed type engine mounts have been widely used, but at the same time, cost reduction and weight reduction have been demanded. For this reason, the structure has been simplified, the number of parts has been reduced, the parts have been made lighter, etc., but nowadays, they have reached the point where they can be reached. Further, it is also practiced to replace the iron bracket that holds the liquid-sealing anti-vibration support device on the vehicle body with aluminum.

[0003]

However, this level is still insufficient, and further cost reduction and weight reduction are required. In order to achieve further cost reduction and weight reduction, it is necessary to think in some way about the idea. The present invention is conceived under such an idea, by abolishing the outer cylinder of the liquid seal anti-vibration support device, which has been conventionally indispensable, and by directly substituting the bracket,
In response to this.

[0004]

SUMMARY OF THE INVENTION Under the above problems, according to the present invention, a cylindrical rubber elastic material having a plurality of recessed portions open to the outer periphery is stretched around the outer periphery of an inner cylinder to form a recessed portion. A conventional liquid-sealing anti-vibration support device in which liquid is filled into the outer periphery of the rubber elastic material and an outer cylinder is fitted to the outer periphery of the rubber elastic material, and a communication passage is formed between the recesses so that the liquid enclosed in the recesses can be moved. In the above, there is provided a liquid-sealing anti-vibration supporting device characterized in that a rubber elastic material is directly inserted into a bracket holding the liquid-sealing anti-vibration supporting device, and the bracket is modified so as to also serve as an outer cylinder.

Further, according to the present invention, in the above liquid-sealing antivibration supporting device, a reinforcing ring protruding laterally of the rubber elastic material, which is cut out from the recessed portion, is enclosed near the outer periphery of the rubber elastic material,
Provided is a liquid-sealing anti-vibration supporting device, characterized in that a protruding portion of a reinforcing ring is bent toward a side surface of a bracket.

Furthermore, the present invention is characterized in that the communication passage of the above-mentioned liquid-sealing antivibration support device is formed by a groove engraved on the side surface of the bracket and a bent protruding portion of the reinforcing ring. An anti-vibration support device is provided.

[0007]

As described above, by modifying the bracket so that it also serves as the outer cylinder, the outer cylinder is no longer necessary, and the weight can be reduced accordingly. At the same time, since the press-fitting process of the outer cylinder, which has been conventionally required, can be omitted, the process can be shortened and the cost can be reduced.

Further, by enclosing the reinforcing ring and bending the protruding portion of the reinforcing ring to the side of the bracket,
The bracket is completely fixed to the rubber elastic material, and the sealing performance of the enclosed liquid is improved.

Further, a groove formed on the side surface of the bracket,
By forming the connecting passage with the bent protruding portion of the reinforcing ring, the degree of freedom in designing the connecting passage is increased, and at the same time, a long connecting passage can be secured.

[0010]

EXAMPLE FIG. 5 is a partial sectional front view of a rubber elastic material, FIG. 6 is a partial sectional side view, and FIG. 7 is a plan view.
Reference numeral 0 denotes a cylindrical shape in which a metal inner cylinder 12 is used as a core and is stretched around the outer circumference thereof, and a concave portion 14 that is open to the outer circumference is formed. It should be noted that the present example is used for an engine mount, and since the engine load is always applied, the inner cylinder 12 is eccentric to the load direction side in advance. The recessed portions 14 are spaced apart in the front and rear of the load direction. In this case, a support column 16 is erected in the center of the recessed portions 14 along the load direction so as to keep the strength in mind. However, the support column 16 is formed with a passage 18 or the like that connects the adjacent recesses 14.

Besides, in the vicinity of the outer periphery of the rubber elastic material 10,
A metal reinforcing ring 20 obtained by cutting out the concave portion 14 is enclosed to enhance the strength. In this example, the reinforcing ring 20 is projected to the side of the rubber elastic material 10. or,
There is a rubber elastic material 10 in which a through hole 22 is formed at a position outside the recess 14 to reduce the spring constant. Further, there is also one in which a cored bar 24 penetrating the support column 16 is inserted to prevent buckling. In addition, several rows of seal lips 26 are formed on the cylindrical portions at both ends of the rubber elastic material 10 (these seal lips 26 are intended to prevent liquid leakage described later).

FIG. 8 is a front view of the bracket into which the rubber elastic material 10 is inserted, and FIG. 9 is a side view thereof. The bracket 28 comprises a housing portion 30 and a mounting portion 32. The bracket 28 may be made of any material, but is preferably made of aluminum in terms of weight. The rubber elastic material 10 is directly inserted into the housing portion 30. At this time, this operation is performed in the liquid and the liquid is sealed in the concave portion 14. Since the liquids enclosed in the recesses 14 need to communicate with each other, a communication passage 34 is provided for that purpose. In this example, the communication passage 34 is formed by forming a groove 36 having both ends facing the recessed portion 14 on the outer periphery of the rubber elastic material 10.

FIG. 1 is a partial cross-sectional side view showing a state where the rubber elastic material 10 is inserted into the bracket 28, and FIG. 2 is a partial cross-sectional front view. Since the liquid in the recessed portion 14 leaks out, it is necessary to take measures to prevent this. In this example, this is the reinforcement ring 2
This is dealt with by bending the protruding portion 20a of 0 along the side surface of the bracket 28. At this time, a rubber elastic layer 38 having a thin standing wall continuous with the rubber elastic material 10 is formed at the end of the rubber elastic material 10, and the rubber elastic layer 38 is interposed between the reinforcing ring 20 and the side surface of the bracket 28. If so, the prevention of liquid leakage will be complete.

FIG. 3 is a front view of a bracket 28 showing another embodiment of the present invention, and FIG. 4 is a sectional side view showing a state in which the rubber elastic material 10 is incorporated in the bracket 28. A groove 36 communicating with the recess 28 is formed on the side surface of the bracket 28 so that the communication passage 34 is formed.
It is configured by bending the protruding portion 20a of 0 and closing the groove 36. Also in this case, it is preferable to interpose the rubber elastic layer 38 between the groove 36 and the protruding portion 20a in order to prevent liquid leakage. By doing so, the communication passage 34 becomes long and the damping property is excellent, and the rubber elastic material 1 has a good strength.
It can be applied when it is not preferable to form a groove on the outer periphery of 0.

[0015]

As described above, the present invention, which has been described above, can eliminate the conventional external cylinder, and contributes to weight reduction. Further, since the fitting operation and the like are unnecessary, the number of steps can be reduced and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional side view of a liquid-sealing anti-vibration support device showing an embodiment of the present invention.

FIG. 2 is a front view, partly in section, of a liquid-sealing anti-vibration support device showing an embodiment of the present invention.

FIG. 3 is a front view of a bracket showing another embodiment of the present invention.

FIG. 4 is a sectional side view of a liquid-sealing anti-vibration support device showing another embodiment of the present invention.

FIG. 5 is a partially sectional front view of a rubber elastic material showing an embodiment of the present invention.

FIG. 6 is a partial cross-sectional side view of a rubber elastic material showing an embodiment of the present invention.

FIG. 7 is a plan view of a rubber elastic material showing an embodiment of the present invention.

FIG. 8 is a front view of a bracket showing an embodiment of the present invention.

FIG. 9 is a side view of the bracket showing the embodiment of the present invention.

[Explanation of symbols]

 10 Rubber Elastic Material 12 Inner Cylinder 14 Recess 20 Reinforcement Ring 20a Reinforcement Ring Projection 28 Bracket 34 Communication Passage 36 Groove 38 Rubber Elastic Layer

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] July 24, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction content]

In FIG. 1, the rubber elastic material 10 is attached to a bracket 28.
2 is a partial cross-sectional side view showing a state of being inserted into the, and FIG. 2 is a partial cross-sectional front view. However, if it is simply inserted (tightly fitted), it may come off or the liquid in the recess 14 may leak out. It is necessary to devise to prevent this. In this example, this is dealt with by bending the protruding portion 20a of the reinforcing ring 20 along the side surface of the bracket 28. At this time, a thin rubber elastic layer 39 is formed at the end of the rubber elastic material 10 so as to be continuous with the end, and the rubber elastic layer 38 is interposed between the reinforcing ring 20 and the side surface of the bracket 28. The leakage prevention is complete.

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 5

[Correction method] Change

[Correction content]

[Figure 5]

[Procedure 3]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 6

[Correction method] Change

[Correction content]

[Figure 6]

[Procedure amendment 4]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 7

[Correction method] Change

[Correction content]

[Figure 7]

Claims (5)

[Claims] 1. An outer cylinder is provided on the outer circumference of a rubber elastic material, in which a cylindrical rubber elastic material having a plurality of recessed portions open to the outer circumference is stretched over the outer circumference of an inner cylinder and liquid is filled in the recessed portions. In a conventional liquid-sealing anti-vibration support device, in which a connecting passage is formed between the recesses and the liquid sealed in the recesses is movable,
A liquid-sealing anti-vibration supporting device, characterized in that a rubber elastic material is directly inserted into a bracket that holds the liquid-sealing anti-vibration supporting device, and the bracket is modified so that it also serves as an outer cylinder. 2. The liquid seal antivibration support device according to claim 1,
A liquid seal characterized in that a reinforcing ring protruding laterally from the rubber elastic material that is cut out from the recessed portion is enclosed near the outer periphery of the rubber elastic material, and the protruding portion of the reinforcing ring is bent to the side of the bracket. Swing support device. 3. A liquid-sealing anti-vibration support device, wherein a rubber elastic layer continuous with a rubber elastic material is interposed between the reinforcing ring and the bracket of claim 2. 4. A liquid-sealing anti-vibration supporting device, wherein the communication passage according to claim 1 is formed by a groove formed on a side surface of the bracket and a bent protruding portion of the reinforcing ring. 5. A liquid-sealing vibration-damping support device, characterized in that a rubber elastic layer continuous with a rubber elastic material is interposed between the groove and the reinforcing ring.