KR20140010516A - Mount for vehicle - Google Patents

Abstract

The present invention is provided to play a role as a stopper which restricts the displacement of an internal core by pushing a protruding part of an insulating rubber into the inside while assembling an external pipe, thereby improving function degradation and durability degradation caused by the breakaway of the stopper.

Description

Car mount {MOUNT FOR VEHICLE}

The present invention relates to a vehicle mount for absorbing and mitigating vibration of a driving element such as an engine, a power train, and a transmission of an automobile. After assembling the outer pipe, the protruding portion of the insulating rubber is pushed inward, and the present invention relates to a vehicle mount serving as a stopper for limiting displacement of the inner core.

In general, the suspension part of an automobile refers to a part that controls the displacement and vibration of the power plant including the engine and the transmission.

Vibration of the vehicle includes body fluctuations when starting and stopping the engine, body vibrations when idling, body vibrations when the engine is at high rotation, vibration caused by unevenness, body fluctuations during high loads, and sudden changes due to oscillation or shifting. Impact and damage caused by excessive displacement.

In the low frequency range (below 30Hz), the source of such vibrations is torque fluctuations during low speed rotation of the engine, power plant vibrations due to inertia force and right hand forces caused by crankshaft rotational movements during low engine revolutions, and power due to drive system joint angles. Power plant vibration due to thrust force.

In the high frequency range (30Hz or more), the inertia force caused by the crankshaft rotational movement at high engine speed, the power plant vibration due to the right hand force, the engagement vibration of the gears in the transmission, the cylinder block vibration during combustion, and the engine valve vibration of the engine , Crankshaft bending, torsional vibration, power plant bending, and the like.

Such vibration causes noise, and the noise is transmitted to the vehicle interior via the vehicle body, and is a main cause of deterioration of ride comfort.

Thus, when mounting drive elements such as engines, powertrains, transmissions, etc. in the engine compartment, the mounts can withstand their weight and support them, as well as absorb and mitigate vibrations so that minimal vibrations are transmitted to the bodywork. Mount is mounted.

Since the mount must be capable of alleviating / absorbing vibrations of the drive elements and at the same time withstanding the load weight of the drive elements, the mounting position, number, structure, etc. of the mounts may vary the weight, structure, chassis, and structure of the drive elements. It is designed with consideration.

Such a mount is called an engine mount when supporting an engine, a powertrain mount when supporting a powertrain, and a transmission mount when supporting a transmission. By means of these mounts, an engine of a vehicle including a transmission is provided in the lower and side parts of a vehicle body. Is connected to the frame.

The structure of the mount is divided into a rubber mount (rubber mount) or a hydro mount (fluid seal mount).

The rubber mount has a structure in which an elastic rubber is interposed between the upper plate and the lower plate, and the rubber mount attenuates vibration and noise.

The hydro mount forms a liquid chamber and a flow path to attenuate vibration and noise through the fluid stored in the liquid chamber.

On the other hand, in the case of the transmission mount, in particular in the case of a fluid-mounted transmission mount has the form as shown in FIG.

1A-1C show a perspective view, a longitudinal sectional view, and a rear view of a conventional fluid enclosed transmission mount.

Fluid-enclosed transmission mount is composed of an inner core 10, intermediate pipe 20, insulating rubber 30, outer pipe (40).

The inner core 10 is made of metal and is coupled to the transmission by fastening bolts or the like.

The intermediate pipe 20 is provided outside the inner core 10 and spaced apart from the inner core 10, and is made of a metal material.

The inner core 10 is supported by the intermediate pipe 20 by the insulating rubber 30.

In addition, the insulating rubber 30 forms a chamber for the liquid chamber and also forms a flow path connecting the chambers to each other.

In addition, the insulating rubber 30 is formed while extending along the axial direction of the inner core 10, the cavity 31 for allowing the displacement of the inner core 10.

The outer pipe 40 is composed of a metal outer pipe body 41 and a diaphragm 42 vulcanized on an inner circumferential surface of the outer pipe body 41.

The outer pipe 40 is assembled to the intermediate pipe 20 to seal the liquid chamber and the flow path by the diaphragm 42.

In such a structure, the inner core 10 has an excessively large top displacement, which causes a deterioration in performance and a deterioration in durability of the mount.

In order to solve this problem, another conventional technique adopts a rubber stopper 50 made of a separate material as shown in FIG.

2A-2C show a perspective view, a longitudinal sectional view, and a rear view of another conventional fluid enclosed transmission mount.

The rubber stopper 50, which is provided separately from the insulating rubber 30, is inserted into the cavity 31 and bonded to the insulating rubber 30.

The upper displacement of the inner core 10 may be reduced by the rubber stopper 50 as described above.

However, the rubber stopper 50 made of a separate substance may be separated from the insulating rubber 30 to the intermediate pipe 20 while the adhesive strength is weakened over time. As such, when the rubber stopper 50 is detached, the upper displacement is enlarged, which causes performance degradation and durability degradation of the mount.

Republic of Korea Patent Publication No. 10-2012-0056973 "TEM mount for vehicles" (June 5, 2012 published) Republic of Korea Patent Publication No. 10-2012-0032219 "Three-point bushing type hydro mount" (published Apr 5, 2012)

The present invention has been made to solve the problems of the prior art as described above, the insulating rubber bonded to the intermediate pipe is formed so as to protrude to the outside of the intermediate pipe and then assembling the outer pipe while the protruding portion of the insulating rubber to the inside The push-in acts as a stopper to limit the displacement of the inner core, thereby solving the problems caused by the conventional star rubber stopper.

In order to solve the above problems, the present invention provides an inner core, an intermediate pipe which is spaced apart from the inner core and is provided outside the inner core, an insulating rubber provided between the inner core and the intermediate pipe, and an outer peripheral surface of the intermediate pipe. An automobile mount comprising an outer pipe disposed in a wrapping form, wherein an opening portion for a stopper is formed on a main surface of the intermediate pipe, and the insulating rubber is bonded to the inner core and the intermediate pipe, respectively, to form an inside of the intermediate pipe. And a stopper portion positioned in the cavity to extend along the axial direction of the inner core, and a stopper portion extending from the insulation portion and protruding out of the intermediate pipe through the stopper opening. The outer pipe is assembled to the intermediate pipe and out of the intermediate pipe. The stopper portion protrudes toward the cavity side, so that the stopper portion functions as a stopper for limiting displacement of the inner core.

In the above, the outer pipe may include a metal outer pipe body and a diaphragm formed on the inner peripheral surface of the outer pipe body.

In the above, a liquid chamber may be formed between the insulating rubber and the outer pipe.

In the above, the fluid may be configured to be filled between the stopper portion and the diaphragm, or may be configured so that no fluid is filled between the stopper portion and the diaphragm.

The stopper part may include a connection part extending from the insulating part and positioned inside the intermediate pipe, and a main stopper part extending from the connection part and protruding to the outside of the intermediate pipe and having a thickness thicker than that of the connection part. .

In the above, the inclined surface inclined with respect to the intermediate pipe may be formed on a portion of the outer portion of the main stopper portion or may have a stepped shape.

As described above, the present invention provides a stopper for vulcanizing the insulation rubber bonded to the intermediate pipe to protrude to the outside of the intermediate pipe, and assembling the outer pipe to push the protruding portion of the insulation rubber inward to limit the displacement of the inner core. By functioning, the problem of deterioration in performance and durability due to detachment of the stopper can be solved.

1A to 1C show a perspective view, a longitudinal sectional view, and a rear view of a conventional fluid-enclosed transmission mount, respectively,
2a to 2c are a perspective view, a longitudinal sectional view, a rear view of another conventional fluid-sealed transmission mount, respectively,
3 is a perspective view before assembly of the first embodiment according to the present invention;
Fig. 4 is a sectional view of Fig. 3,
5 is a rear view of the intermediate pipe assembly in FIG.
6 is a perspective view of the assembled state 3;
7 is a cross-sectional view of FIG.
8 is a perspective view before assembling the second embodiment according to the present invention;
Fig. 9 is a sectional view of Fig. 8,
10 is a perspective view of the state in which FIG. 8 is assembled;
11 is a cross-sectional view of FIG. 10.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention in the drawings, portions not related to the description are omitted, and like reference numerals are given to similar portions throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

Hereinafter, a first embodiment according to the present invention will be described.

The first embodiment relates to a fluid sealed vehicle mount in which a liquid chamber is formed.

3 is a perspective view before assembly of a first embodiment according to the present invention, Figure 4 is a cross-sectional view of Figure 3, Figure 5 is a rear view of the intermediate pipe assembly in Figure 3, Figure 6 is a perspective view of the assembled state 3 7 is a cross-sectional view of FIG. 6.

This embodiment is largely a structure in which the intermediate pipe assembly 100 and the outer pipe 200 are assembled.

The intermediate pipe assembly 100 includes an inner core 110, an intermediate pipe 120, and an insulating rubber 130.

The outer pipe 200 includes an outer pipe body 201 and a diaphragm 202.

The inner core 110 is made of metal and is coupled to the transmission by fastening bolts or the like.

The intermediate pipe 120 is spaced apart from the inner core 110 and is provided outside the inner core 110 and is made of a metal material.

The inner core 110 is supported on the intermediate pipe 120 by the insulating rubber 130.

In addition, a chamber for forming a liquid chamber is formed in the insulating rubber 130, and a flow path for connecting the chambers to each other is formed.

In addition, the insulating rubber 130 is formed while extending along the axial direction of the inner core 110, the cavity 131 to allow the displacement of the inner core (10).

As such, the intermediate pipe assembly 100 is manufactured in a state in which the inner core 110 and the intermediate pipe 120 are vulcanized by the insulating rubber 130.

Meanwhile, the diaphragm cover 140 of FIGS. 4 and 7 is inserted for the purpose of protecting the diaphragm 202 and forming a flow path.

Meanwhile, the outer pipe 200 includes a metal outer pipe body 201 and a diaphragm 202 vulcanized on an inner circumferential surface of the outer pipe body 201.

The outer pipe 200 is assembled in the form of surrounding the outer circumferential surface of the intermediate pipe 120 by swaging or the like to seal the liquid chamber and the flow path by the diaphragm 202.

Since the mount of the above structure is similar to the conventional technology, detailed description thereof will be omitted. That is, the liquid chamber, the flow path, the structure of the outer pipe, and the like can be varied in many ways, and various techniques are known in the art.

Hereinafter, the features of the present embodiment will be described.

In this embodiment, the opening 121 for the stopper is formed on the main surface of the intermediate pipe 120.

In addition, the insulating rubber 130 is divided into an insulating part 132 and a stopper part 133, but the insulating part 132 and the stopper part 133 is integrally vulcanized and formed.

The insulating part 132 is bonded to the inner core 110 and the intermediate pipe 120, respectively, and is positioned inside the intermediate pipe 120, and the cavity 131 is formed.

Such an insulation part 132 has the same function as the conventional insulation rubber 30.

In the present embodiment, the stopper part 133 is integrally vulcanized together with the insulating part 132.

The stopper part 133 extends from the insulating part 132 but protrudes out of the intermediate pipe 120 through the stopper opening 121.

As described above, the insulating part 132 and the stopper part 133 have their shapes completed when the insulating rubber 130 is vulcanized as shown in FIGS. 3, 4, and 5.

After the intermediate pipe assembly 100 is manufactured as described above, the intermediate pipe assembly 100 and the outer pipe 200 are assembled as shown in FIGS. 6 and 7.

At this time, when the outer pipe 200 is assembled to the intermediate pipe assembly 100 by swaging or the like, the stopper part 133 protruding out of the intermediate pipe 120 is pushed toward the cavity part 131 by the outer pipe 200. As shown in FIG. 7, the upper core 110 functions as a stopper for limiting the upper displacement of the inner core 110.

That is, the stopper part 133 does not have a function as a stopper in the state of the intermediate pipe assembly 100, but has a function as a stopper as the outer pipe 200 is assembled.

In addition, since the stopper part 133 is part of the insulating rubber 130, the stopper part 133 significantly reduces the risk of being separated from the insulating rubber 130 even when used for a long time.

In the present embodiment, the fluid may be enclosed in the space surrounded by the stopper 133 and the diaphragm 202.

For example, when the outer pipe 200 is coupled to the intermediate pipe 120 by the swaging method in a state in which the intermediate pipe assembly 100 is immersed in the fluid, the fluid is also filled outside the stopper part 133. Such a fluid can compensate for the damping performance lacking in ordinary rubber. That is, vibration caused by the impact when the stopper portion 133 contacts with the fluid can be improved.

Meanwhile, in the present embodiment, when the fluid is to be prevented from being filled in the space surrounded by the stopper part 133 and the diaphragm 42, the drain connecting the space and the cavity part 131 to the stopper part 133. It is sufficient to form a drain hole in advance. Of course, the drain hole is sufficient to produce the insulating rubber in its form immediately before the vulcanization.

Meanwhile, as shown in FIG. 4, the stopper part 133 of the present embodiment may include a connecting part 133a and a main stopper part 133b.

The connection part 133a is positioned inside the intermediate pipe 120 while extending from the insulating part 132, and is intended to facilitate the flow of the main stopper part 133b to be described later by making the thickness relatively thin. As a result, the overall assembly can be improved. Of course, in some cases, in order to increase the durability of the stopper portion 133, the thickness of some parts may be slightly thickened.

The main stopper part 133b protrudes outward from the intermediate pipe 120 while extending from the connection part 133a. Of course, the main stopper portion 133b has a thickness thicker than that of the connecting portion 133a.

In addition, the inclined surface 133c may be formed on a part of the outer portion of the main stopper part 133b or have a stepped shape as shown in FIG. 4. The inclined surface 133c is a portion which is formed to be inclined with respect to the intermediate pipe 120. The inclined surface 133c or the stepped shape may allow the secondary characteristics to be exhibited when the vibration due to the impact is reduced.

Hereinafter, a second embodiment according to the present invention will be described.

The second embodiment relates to a rubber mount of the general type in which no liquid chamber is formed.

8 is a perspective view before assembling the second embodiment according to the present invention, FIG. 9 is a sectional view of FIG. 8, FIG. 10 is a perspective view of the assembled state of FIG. 8, and FIG. 11 is a sectional view of FIG. 10.

The difference between the present embodiment and the first embodiment is that shapes for the liquid chamber or the flow path are not necessary in the insulating rubber 130, and the outer pipe 200 is made of only the outer pipe body made of metal. That is, since a liquid chamber or a flow path is not formed, diaphragm etc. are unnecessary.

Except for these points, the description of the second embodiment is replaced with the description of the first embodiment.

In addition, the shape of the outer pipe 200 may be applied in various forms as shown in FIG.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be. It is therefore to be understood that the embodiments described above are intended to be illustrative, but not limiting, in all respects. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: intermediate pipe assembly
110: internal core
120: intermediate pipe 121: stopper opening
130: insulating rubber 131: cavity
132: insulation 133: stopper
200: outer pipe 201: outer pipe body
202: diaphragm

Claims (6)

An inner core, an intermediate pipe spaced apart from the inner core, and an outer pipe disposed outside the inner core, an insulating rubber provided between the inner core and the intermediate pipe, and an outer pipe disposed to surround an outer circumferential surface of the intermediate pipe. In the car mount,
A stopper opening is formed in the main surface of the intermediate pipe,
The insulating rubber is connected to the inner core and the intermediate pipe, respectively, the insulating portion is formed inside the intermediate pipe and extending along the axial direction of the inner core, and formed from the insulating portion extending from the stopper It includes a stopper portion protruding out of the intermediate pipe passing through the opening for the
The outer pipe is assembled to the intermediate pipe and pushes the stopper portion protruding outward from the intermediate pipe toward the cavity, so that the stopper portion functions as a stopper for limiting displacement of the inner core.
Automotive mount, characterized in that.
The method of claim 1,
The outer pipe is a vehicle mount, characterized in that it comprises a metal outer pipe body and a diaphragm formed on the inner peripheral surface of the outer pipe body. The method of claim 1,
Fluid-mounted vehicle mount, characterized in that the liquid chamber is formed between the insulating rubber and the outer pipe.
3. The method of claim 2,
Fluid-filled vehicle mount, characterized in that the fluid is filled between the stopper and the diaphragm.
The method of claim 1,
The stopper part may include a connection part extending from the insulating part and positioned inside the intermediate pipe, and a main stopper part protruding from the connection part to the outside of the intermediate pipe and having a thickness thicker than the connection part. Car mounts.
The method of claim 5, wherein
Mounted for a fluid-filled vehicle, characterized in that the inclined surface inclined with respect to the intermediate pipe is formed on a portion of the outer portion of the main stopper portion or has a stepped shape.

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