JP3391840B2 - Engine mount - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bracket-integrated engine mount, and more particularly to a coupling structure between a bracket and a vibration isolator mainly including an insulator. The present invention relates to an assembly-type bracket-integrated engine mount having a configuration in which the engine mount is integrated without using bolts and nuts. 2. Description of the Related Art A conventional structure around an engine mount is as follows.
As shown in FIG. 3, an insulator 2 made of a vibration-proof rubber or the like
10, the upper mounting portion 280 integrated with the insulator 210 by vulcanization bonding means or the like, and the upper mounting portion 28
0, and a vehicle body side mounting bolt 2 used for mounting to a vehicle body side member or the like.
And a bracket 10 for attaching the vibration isolator 20 to the engine. The bracket 10 is often formed of a light alloy such as an aluminum alloy (hereinafter referred to as an AL alloy) from the viewpoint of weight reduction. A flange 150 is provided on a part of the AL alloy bracket 10, and the flange 150 further includes a mounting hole 180 for mounting the bracket-side mounting bolt 30 on the vibration isolator 20 side,
Mounting hole 170 for mounting positioning pin 290, drain hole 1
90 and the like are provided. As shown in FIG. 3, the bracket 10 having such a configuration and the vibration isolator 20 are connected by a bracket-side mounting bolt 30, a nut 40 and the like provided on the vibration isolator 20. Is mounted on a vibrating body side of an engine (not shown) or the like to form an engine mount. [0004] The conventional engine mount having the above configuration has the following problems. That is, between the flange portion 150 of the bracket 10 and the bracket-side mounting bolt 30,
Galvanic corrosion may occur. Because the bracket 10 is made of AL alloy,
This is because the bracket-side mounting bolt 30 is made of an iron (Fe) -based metal, so that a potential difference occurs between the two, and this causes contact corrosion between different metals. The bracket 10 and the vibration isolator 20
Is configured to be fastened by bolts and nuts 30 and 40, and furthermore, the vibration from the engine is transmitted to the bracket 10; However, there is a possibility that loosening may occur between the two. Therefore, in order to prevent the occurrence of this slack,
It is necessary to increase the processing accuracy of the fastening surface. In addition, in order to prevent the occurrence of corrosion and rust such as the galvanic corrosion, a drain hole 19 is formed in the flange portion 150 of the bracket 10.
0 must be provided. Furthermore, when the nut 40 is tightened, the torque must be strictly controlled. For example, a lot of time is required in the working process and the assembling process, and the manufacturing cost must be increased. is there. It is an object (problem) of the present invention to provide a bracket-integrated engine mount that solves such problems in processing or assembly, and furthermore problems such as galvanic corrosion. [0005] In order to solve the above problems, the present invention takes the following measures. That is, for the purpose of isolating vibration from a vibrating body such as an engine, with respect to an engine mount provided between the engine and the vehicle body, a bracket that connects between the vibration isolator that absorbs vibration from the engine and the engine, An engine-side mounting portion that forms a mounting portion to the engine, and a stay portion that is provided so as to project from the engine-side mounting portion,
It is formed by a flange part also serving as a rebound side stopper provided at the tip part of the stay part, and a projecting insertion part provided at the further tip side of the tip of the flange part, and further connected to the bracket. A vibration isolator made of a vibration isolating rubber, and an insulator having a concave engaging portion in a part thereof, and a holder holding the insulator and having a stopper in a part thereof , While being formed, the protruding insertion portion provided at the tip of the bracket is fitted to the recessed engagement portion provided on the insulator.
Is fitted, additionally, the bracket come after this fitting
Is rotated by a certain angle so that the flange and stopper
Up so that they engage each other in the vertical direction
Set the position of the serial flange and thereby the possible to employ a configuration in which the so that is integrated with the bracket. With the above configuration, the present invention has the following functions. First, as shown in FIG. 2, when integrating (connecting) the vibration isolator 2 and the bracket 1, a concave engaging portion 29 provided on the upper part of the insulator 21 forming the vibration isolator 2. The inside of the bracket 1 is integrated by fitting (engaging) a protruding insertion portion 11 provided at the distal end of the bracket 1. More specifically, as shown in FIG. 1, first, a flange portion serving also as a rebound-side stopper provided on the bracket 1 is provided in an engagement hole forming a stopper 23 provided on an upper portion of the vibration isolator 2. 12 is inserted. Thereafter, the insertion portion 11 provided at the distal end of the bracket 1 is fitted (fitted) into the engagement portion 29 provided on the insulator 21 side. After the fitting is completed, the bracket 1 is rotated (twisted) by a predetermined angle, and the bracket 1 is set so that the flange 12 comes to the position shown by the broken line. Thereby, the flange portion 12 and the stopper 23
Means that the engaging action is performed when the relative displacement between the two becomes large, and therefore, both perform the stopper function. In addition, in these series of engagement operations, the engagement state between the engagement portion 29 and the insertion portion 11 can be maintained only by the elastic force of the insulator 21, but in addition to this, By engaging between the two by an adhesive means using an adhesive,
It can also be kept in a stronger state. [0008] As described above, the integration of the bracket 1 and the vibration isolator 2 is performed by a simple fitting operation, and a tightening operation with bolts and nuts is not required, so that the assembling process is simplified. Be transformed into In addition, since the bracket 1 and the insulator 21 made of an elastic body are directly connected without using fastening means such as bolts and nuts, the problem of galvanic corrosion due to contact of dissimilar metals as in the prior art is also reduced. It will be released. Further, since fastening means such as bolts and nuts are not used, it is not necessary to pay attention to the finishing accuracy of the flange surface on the bracket side and the bracket mounting surface on the vibration isolator side. Simplification can be achieved, and there is no need to worry about occurrence of loosening due to engine vibration or the like of the fastening portion. In addition, it is not necessary to provide a drainage hole or the like at a joint portion of the bracket 1 or the like, so that the processing steps of the bracket 1 are simplified, thereby reducing the processing cost and the manufacturing cost of the entire engine mount. An embodiment of the present invention will be described with reference to FIGS. 1 and 2. As shown in FIG. 1, the configuration of the present embodiment is basically composed of a stay-shaped bracket 1 and an anti-vibration device 2 having an insulator 21 and the like to which the tip of the bracket 1 is coupled. . In such a basic structure, the bracket 1 is made of a light alloy material such as an AL alloy as shown in FIGS. 1 and 2, and a flange-shaped engine-side mounting portion 14 is provided on a base portion thereof. And the engine-side mounting portion 14
A hollow stay portion 13 is provided so as to protrude from the front end portion. At the tip of the stay portion 13, first, a disc-shaped projecting bound side stopper portion 15 is provided. The end of the portion 15 has a triangular flange portion 12, and the end of the flange portion 12 has a protruding insertion portion 11 at the foremost end. On the other hand, as shown in FIG. 2, an anti-vibration device 2 integrated with the bracket 1 has an insulator 21 made of an elastic material such as anti-vibration rubber as a center, and the insulator 21 or a vehicle body side member (see FIG. 2). (Not shown) and a holder 22 for holding mounting bolts 25 and the like forming a mounting portion. And, when the displacement of the engine becomes large, that is, the relative displacement between the bracket 1 and the vibration isolator 2 becomes large above the holder 22 of the vibration isolator 2 having such a configuration. A stopper 23 is provided which serves to suppress the relative displacement of the stopper 23 when the stopper 23 is turned off. The stopper 23 has a triangular hole at the center and a hook-shaped engaging portion at the periphery. As shown in FIG. 1, a concave engaging portion 29 is provided in the upper central portion of the insulator 21. The convex insertion portion 11 of the bracket 1 is fitted into the recessed engagement portion 29, and the elastic force of the insulator 21 around the engagement portion 29 allows the bracket 1 and the insulator 21 to be engaged. That is, the bracket 1 and the vibration isolator 2 are integrated. The engaging portion 2 of the insulator 21
The engagement between the insert 9 and the insertion portion 11 of the bracket 1 can also be performed by using an adhesive between the insulator 21 and the elastic member, in addition to the elastic force of the insulator 21. It can be more robust. As described above, in the present embodiment, the fastening means (fastener) such as bolts and nuts used in the conventional one is not used, and the bracket 1 and the vibration isolator 2 are directly connected. Thus, a bracket-integrated engine mount is formed by these components. An assembling procedure, operation and the like of the embodiment having the above configuration will be described. That is, as shown in FIG.
In integrating (connecting) the vibration isolator 2 and the bracket 1, the bracket 1 is inserted into a concave engaging portion 29 provided at the upper center of the insulator 21 forming the vibration isolator 2. This is performed by fitting (engaging) the protruding insertion portion 11 provided at the distal end portion. In this case, first, as shown in FIG. 1, a flange portion 12 serving also as a rebound-side stopper provided on the bracket 1 is inserted into a triangular engagement hole forming a stopper 23 provided on an upper portion of the vibration isolator 2. insert. After that, the insertion portion 11 provided on the bracket 1 is fitted into the engagement portion 29 provided on the insulator 21. After the fitting is completed, the bracket 1 is rotated (twisted) by a predetermined angle, about 60 ° in the present embodiment, and is installed so that the flange portion 12 comes to a position shown by a broken line. As a result, the flange portion 12 and the stopper 23 come into engagement with each other when the relative displacement between the two increases, whereby the function of the stopper is exhibited. In this series of engagement operations, by providing an adhesive means between the engagement portion 29 and the insertion portion 11 with an adhesive, the bonding by the adhesive besides the elastic force of the insulator 21 is performed. The power will be strengthened. As described above, the integration of the bracket 1 and the vibration isolator 2 is performed by a simple fitting operation, and a tightening operation using bolts and nuts is not required. Be transformed into Also, since the bracket 1 and the insulator 21 made of an elastic body are directly connected without using fastening means such as bolts and nuts,
The galvanic corrosion based on the contact between dissimilar metals, which has been a problem in the prior art, is also released. According to the present invention, with respect to an engine mount provided between an engine and a vehicle body for the purpose of isolating vibration from a vibrating body such as an engine, a vibration isolator for absorbing vibration from the engine is provided. A bracket connecting the engine and the engine is attached to an engine-side mounting portion serving as an engine-side mounting portion, a stay portion provided so as to protrude from the engine-side mounting portion, and a tip portion of the stay portion. A vibration isolator, which is formed by a provided flange portion also serving as a rebound-side stopper and a protruding insertion portion provided further on the distal end portion side of the flange portion, and further connected to the bracket 1. An insulator made of a vibration-proof rubber or the like and having a recessed engaging portion in a part thereof, and a holder or the like holding the insulator or the like and having a stopper in a part thereof In addition, a configuration is adopted in which the protruding insertion portion provided at the distal end of the bracket is engaged with the recessed engagement portion provided on the insulator, thereby being integrated with the bracket. Therefore, the bracket and the vibration isolator can be easily combined (integrated). As described above, the integration of the bracket and the vibration isolator is performed by a simple fitting operation, and the tightening work with bolts and nuts is not required. As a result, the assembling process is simplified. In addition, since fastening means such as bolts and nuts are not required, problems such as galvanic corrosion due to contact of a dissimilar metal with a bracket made of AL alloy do not occur. Furthermore, since fastening means such as bolts and nuts are not used, it is not necessary to pay attention to the processing accuracy of the finished surface such as the flange surface on the bracket side and the bracket mounting surface on the vibration isolator side. The process can be simplified. Further, it is no longer necessary to consider the occurrence of looseness due to engine vibrations and the like of the fastening portion. Also, there is no need to provide a drain hole or the like in the joint portion on the bracket side, and the machining process of the bracket is simplified,
These have made it possible to reduce the processing cost and manufacturing cost of the entire engine mount.

[Brief description of the drawings] FIG. 1 is a developed perspective view showing the overall configuration of the present invention. FIG. 2 is a longitudinal sectional view showing the entire configuration of the present invention. FIG. 3 is a longitudinal sectional view showing the entire configuration of a conventional example. [Explanation of symbols] 1 bracket 11 Insertion section 12 Flange (Rebound side stopper) 13 Stay section 14 Engine side mounting part 15 Bound side stopper 2 Anti-vibration device 21 Insulator 22 Holder 23 Stopper 25 Mounting bolt 29 Engagement part

Claims (1)

(1) Claims 1. A vibration damping device for absorbing vibration from an engine in an engine mount provided between an engine and a vehicle body for the purpose of isolating vibration from a vibrating body such as an engine. A bracket connecting the engine and the engine, an engine-side mounting portion forming a mounting portion to the engine side, and a stay portion provided so as to protrude from the engine-side mounting portion,
It is formed by a flange part also serving as a rebound side stopper provided at the tip part of the stay part, and a projecting insertion part provided at the further tip side of the tip of the flange part, and further connected to the bracket. A vibration isolator made of a vibration isolating rubber, and an insulator having a concave engaging portion in a part thereof, and a holder holding the insulator and having a stopper in a part thereof , While being formed, the protruding insertion portion provided at the tip of the bracket is fitted to the recessed engagement portion provided on the insulator.
Is fitted, additionally, the bracket come after this fitting
Is rotated by a certain angle so that the flange and stopper
Up so that they engage each other in the vertical direction
Set the position of the serial flange portion, whereby the engine mount bracket integral, characterized in that it consists of structure it was so that is integrated with the bracket.