DE102015225138A1 - Automotive bearings - Google Patents

Abstract

The present invention relates to a motor vehicle bearing (1), in particular an engine mount (1), having an inner part (10), an outer part (11) which comprises the inner part (10), and an elastomer body (12) which surrounds the inner part (10 ) and the outer part (11) with each other, wherein on the inside (11a) of the outer part (11) at least a first hydraulic stop (13) is arranged, with which the inner part (10) can come into contact, wherein the first hydraulic stop (13) has a fluid-filled chamber (15). The motor vehicle bearing (1) is characterized in that the fluid-filled chamber (15) of the first hydraulic stop (13) via a connecting channel (17) is fluidly connected to a second chamber (16).

Description

The present invention relates to a motor vehicle bearing according to the preamble of claim 1 and an insertion component for such a motor vehicle bearing according to claim 7.

For various applications, bearings are known which can dampen vibrations. For example, in vehicles, particularly internal combustion engine vehicles, the engine is vibration damped by means of a plurality of automotive bearings, e.g. attached to the body. When installed transversely in the body engines, these motor vehicle bearings sit sideways. The motor vehicle bearings can essentially move the motor in the direction vertical to the direction of travel of the vehicle, i. in the direction of the weight, damp. Here, the engine may be arranged perpendicular to the direction of travel in the motor vehicle bearings.

The mounting of an engine relative to the body can be accomplished by conventional, i. elastic or elastomeric, or hydraulic motor vehicle bearings take place. Hydraulic bearings are commonly used to prevent the motor from rocking in its natural frequency in the vertical direction. In the horizontal direction, i. in the direction of travel, conventional elastomeric stops can limit the movement of the engine.

Such a hydraulic engine mount component is for example from the DE 10 2005 033 509 A1 known. This engine mount has an inner part which is connected to the engine, an outer part which comprises the inner part and which is connected to the body, and an elastomer body which connects the inner part and the outer part with each other. The static weight of the motor is stored in the vertical direction on the elastomer body. Below the elastomer body, the hydraulic vibration damper unit is arranged. In the horizontal direction, which corresponds to the longitudinal direction or travel direction of the vehicle, the inner part relative to the outer part in this direction is elastically movable.

During strong accelerations of the vehicle in the direction of travel may occur due to the movements of the engine in the vehicle longitudinal direction to the action of very large forces on the motor vehicle bearings of the engine. In particular, it may e.g. when driving off on a wet road, the tires spin on the ground. This can lead to changing loads on the stops of the bearings, i. in the horizontal directions, the internal parts can bear against the outer parts of the bearings. This effect is known as Anfahrstempeln, which can lead to large noise developments. At the same time, the motor vehicle bearing can experience very high loads, which can lead to damage or reduce its service life.

In order to reduce the noise and stress in the case of a contact between the inner and outer part of such a bearing, it is for example from the US 2008 029 942 A1 It is known to provide on the inside of the outer part of the bearing in the longitudinal direction and / or in the vertical direction a plurality of fluid-filled chambers, pockets or bladders, which can act as hydraulically damping stops in the direction of travel or in the vertical direction. As a result, the force or vibration transmission between the inner and outer part can be damped by the liquid of these attacks, if the inner part acts on these hydraulic stops.

An object of the present invention is to provide a motor vehicle bearing of the type described above so that noise developments and / or loads of the motor vehicle bearing can be further reduced as soon as the stops engage. At least an alternative to known motor vehicle bearings to be provided.

The object is achieved by a motor vehicle bearing with the features of claim 1 and by a Einsetzbauteil with the features of claim 7. Advantageous developments are described in the subclaims.

Thus, the present invention relates to a motor vehicle bearing, in particular an engine mount, with an inner part, which referred to as a holder and to which a vibration generating unit of the motor vehicle, in particular a motor, in particular an internal combustion engine, can be attached. The motor vehicle bearing further comprises an outer part comprising the inner part, i. the inner part substantially e.g. annular or box-shaped in a vertical and a horizontal direction encloses, wherein the horizontal direction is preferably the vehicle longitudinal direction. The outer part may e.g. be attached to the body of the motor vehicle. The inner part and the outer part are connected to each other by an elastomer body, so that vibrations between the inner part and outer part can be damped by the elastomer body.

For heavy loads such as strong acceleration of the vehicle in the direction of travel, especially when starting on a wet road, such a camp can go into the attack, ie the inner part can come into contact with the inside of the outer part. To be in this Situation to allow improved damping of the inner part, it is known to arrange on the inside of the outer part at least a first hydraulic stop, with which the inner part can come into contact. The first hydraulic stop has a fluid-filled chamber. As a result, the damping of the vehicle bearing located in the stop can be improved.

Against this background, the present invention is based on the finding that this damping can be improved by the fluid-filled chamber of the first hydraulic stop is fluidly connected via a connecting channel with a second chamber. In other words, the two chambers can communicate with each other via the connection channel to carry fluid. In this way, a compensation possibility of the fluid between the two chambers can be created. This can provide for improved damping of the motor vehicle bearing, if this goes into the attack. This can improve the comfort of the motor vehicle.

The second chamber can be arranged as desired as long as a fluid-conducting connection between the two chambers can take place, which can lead to the desired improved damping. On the design of the connecting channel, in particular its length between the two chambers and its cross-section can be influenced on the attenuation achieved thereby.

According to one aspect of the present invention, the second chamber is formed by a second hydraulic stop. In this way, additional space for the second chamber can be saved by the second chamber itself is used as part of a second hydraulic stop. In this way, the second chamber not only serve as a compensation chamber of the first chamber, but also have their own damping function, so that a second hydraulic stop can be provided.

According to a further aspect of the present invention, the two hydraulic stops are in a Cartesian spatial direction, in particular in the vehicle longitudinal direction, opposite and close the inner part at least partially between them. As a result, the two hydraulic stops can have a mutual effect on the inner part, which is particularly advantageous if the two hydraulic stops are opposite in the vehicle longitudinal direction as the main direction of the vibration to be damped.

In other words, with changing load in the vehicle longitudinal direction, such as e.g. When starting on a wet road, the engine may move back and forth between the two hydraulic stops. In this case, according to the invention, the fluid is pumped back and forth between the chambers of the two hydraulic stops via the connecting channel. This can bring about the desired improved damping.

According to a further aspect of the present invention, the first hydraulic stop, preferably both hydraulic stops, an elastomer stop, which is disposed within the chamber and aligned against the inside of the outer part. This elastomeric stopper can be designed as a survey or projection on the inside of the hydraulic stops and with this in one piece, which can make the production simple and avoid additional installation effort.

The elastomer stop may be spaced apart from or in contact with the inside of the outer part in the unloaded state of the hydraulic stop, whereby the course of progression of the hydraulic stop can be influenced or adjusted. Also, via the material of the hydraulic stop or on the form such. the cross section of the elastomer stop influence on the Progressionverlauf the hydraulic stop are taken.

According to a further aspect of the present invention, the first hydraulic stop and the connecting channel, preferably also the second hydraulic stop, are formed by an insertion component, which abuts at least in sections with its outer side against the inner side of the outer part. In this way, the inventively improved damping can be easily retrofitted to existing motor vehicle bearings or existing bearing structures can be easily extended to the inventive improved damping, so that can be dispensed with adjustments.

According to a further aspect of the present invention, the first hydraulic stop and / or the connecting channel and / or the second hydraulic stop are formed at least in sections by the outside of the insertion component and the inside of the outer part. This can allow a flat construction as possible, so that space between the outer part and the inner part of the motor vehicle bearing can be saved to the present invention realize. Also, the present invention can be implemented as simply as possible.

The present invention also relates to an insertion component for use in a motor vehicle bearing as described above, wherein the insertion component is formed, at least partially abut with its outside on the inside of an outer part of the bearing and thereby a first hydraulic stop and a connecting channel, preferably also a second hydraulic Stop to train.

Two embodiments and further advantages of the invention are explained below in connection with the following figures. It shows:

1 a perspective schematic view of a motor vehicle bearing according to the invention according to a first embodiment;

2 a schematic cross section through the motor vehicle bearing of 1 ;

3 a perspective schematic representation of an insertion of the motor vehicle bearing of 1 ;

4 a perspective schematic representation of a motor vehicle bearing according to the invention according to a second embodiment;

5 a schematic cross section through the motor vehicle bearing of 4 ; and

6 a perspective schematic representation of an insertion of the motor vehicle bearing of 4 ,

1 shows a perspective schematic representation of a motor vehicle bearing according to the invention 1 according to a first embodiment. 2 shows a schematic cross section through the motor vehicle bearing 1 of the 1 , 3 shows a perspective schematic representation of an insertion component 19 of the motor vehicle warehouse 1 of the 1 ,

The motor vehicle warehouse 1 is an engine mount in the two embodiments considered 1 , The engine mount 1 has an inner part 10 on which also as a holder 10 of the engine mount 1 can be designated. At the inner part 10 the engine of the motor vehicle can be arranged. The engine mount 1 also has an outer part 11 on which as housing 11 of the engine mount 1 can be designated. The outer part 11 can be connected to the body of the motor vehicle. The outer part 11 encloses the inner part 10 essentially.

Between the inner part 10 and the outer part 11 is an elastomeric body 12 arranged, which is substantially in a vertical direction Z, which corresponds to the direction Z of the weight force, below the inner part 10 located. In this area is the elastomer body 12 as two obliquely down from the inner part 10 protruding elastomeric springs 12a trained, the inside of the outer part 11 put on. About these elastomeric springs 12a of the elastomer body 12 can the static load of the inner part 10 on the outer part 11 be transmitted.

In the horizontal direction X, which corresponds to the vehicle longitudinal direction X, as well as in the vertical direction Z above the inner part 10 this is not with the outer part 11 connected. In this way, the inner part can 10 move in these directions, allowing a damping of the vibrations between inner part 10 and outer part 11 over the elastomeric body 12 as well as due to the freedom of movement of the inner part 10 inside the outer part 11 can take place. In the event that the inner part 10 with the inside 11a of the outer part 11 comes in contact, points the inner part 10 in each of these directions an elastomeric stop 12b on which by the elastomeric body 12 be formed. In this way, the elastomeric body surrounds 12 the inner part 10 in the vertical direction Z and in the horizontal direction X.

To the damping between inner part 10 and outer part 11 in the event that improve the engine mount 1 goes into the attack, ie that one of the two elastomeric stops 12b , which in the longitudinal direction X between the inner part 10 and the outer part 11 lie in contact with the inside 11a of the outer part 11 comes, are in these places the inside 11a of the outer part 11 two hydraulic stops 13 . 14 arranged. The two hydraulic stops 13 . 14 each have a chamber 15 . 16 which is filled with an incompressible fluid. Here are the two chambers 15 . 16 the two hydraulic stops 13 . 14 by means of a connecting channel 17 fluid carrying interconnected so that when loaded a hydraulic stop 13 . 14 through the corresponding elastic stop 12b of the inner part 10 the fluid in the chamber 15 . 16 the other hydraulic stop 13 . 14 can be pressed, creating a damping effect on the contact or the force of the elastic stop 12b of the inner part 10 can be exercised.

According to the invention, the two hydraulic stops 13 . 14 with their chambers 15 . 16 and the connection channel 17 through a Einsetzbauteil 19 formed, which in an existing or fertigkonstruiertes such engine mounts 1 can be used to achieve the effects of the invention described above. In this case, the insertion component 19 with its outside 19a against the inside 11a of the outer part 11 abut and seal tight, leaving the chambers 15 . 16 the two hydraulic stops 13 . 14 as well as the connection channel 17 open in this direction in the insertion component 19 can be trained. The chambers 15 . 16 the two hydraulic stops 13 . 14 as well as the connection channel 17 then from the inside 11a of the outer part 11 opposite the outside 19a of the insertion component 19 completed.

4 shows a perspective schematic representation of a motor vehicle bearing according to the invention 1 according to a second embodiment. 5 shows a schematic cross section through the motor vehicle bearing 1 of the 4 , 6 shows a perspective schematic representation of an insertion component 19 of the motor vehicle warehouse 1 of the 4 ,

This second embodiment differs from the first embodiment in that within the two chambers 15 . 16 the two hydraulic stops 13 . 14 one to the inside 11a of the outer part 11 aligned elastomeric stop 18 is provided. The two elastomer stops 18 can load the hydraulic stops 13 . 14 through the corresponding elastomeric stops 12b of the inner part 10 against the inside 11a of the outer part 11 be pressed. As a result, the progression characteristic of the two hydraulic stops 13 . 14 to be influenced.

LIST OF REFERENCE NUMBERS

X

Longitudinal direction, vehicle longitudinal direction

Z

vertical direction, direction of weight

1

Motor vehicle bearings, engine mounts

10

Inner part, holder

11

Outer part, housing

11a

Inside of the outer part 11

12

elastomer body

12a

elastomeric springs of the elastomeric body 12

12b

elastomeric stops of the elastomer body 12

13

first hydraulic stop

14

second hydraulic stop

15

Chamber of the first hydraulic stop 13

16

Chamber of the second hydraulic stop 14

17

Connecting channel between chambers 15 . 16 the two hydraulic stops 13 . 14

18

Elastomer stopper of a chamber 15 . 16 a hydraulic stop 13 . 14

19

Einsetzbauteil

19a

Outside of the insertion component 19

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102005033509 A1 [0004]
• US 2008029942 A1 [0006]

Claims (7)

Motor vehicle warehouse ( 1 ), in particular engine mounts ( 1 ), with an inner part ( 10 ), an outer part ( 11 ), which comprises the inner part ( 10 ), and an elastomeric body ( 12 ), which the inner part ( 10 ) and the outer part ( 11 ), wherein on the inside ( 11a ) of the outer part ( 11 ) at least one first hydraulic stop ( 13 ) is arranged, with which the inner part ( 10 ), the first hydraulic stop ( 13 ) a fluid-filled chamber ( 15 ), characterized in that the fluid-filled chamber ( 15 ) of the first hydraulic stop ( 13 ) via a connection channel ( 17 ) fluid carrying with a second chamber ( 16 ) connected is. Motor vehicle warehouse ( 1 ) according to claim 1, wherein the second chamber ( 16 ) from a second hydraulic stop ( 14 ) is formed. Motor vehicle warehouse ( 1 ) according to claim 2, wherein the two hydraulic stops ( 13 . 14 ) in a Cartesian spatial direction, in particular in the vehicle longitudinal direction (X), and the inner part ( 10 ) at least in sections between them. Motor vehicle warehouse ( 1 ) according to one of the preceding claims, wherein the first hydraulic stop ( 13 ), preferably both hydraulic stops ( 13 . 14 ), an elastomer stop ( 18 ), which within the chamber ( 15 ) and against the inside ( 11a ) of the outer part ( 11 ) is aligned. Motor vehicle warehouse ( 1 ) according to one of the preceding claims, wherein the first hydraulic stop ( 13 ) and the connection channel ( 17 ), preferably also the second hydraulic stop ( 14 ), from an insertion component ( 19 ) are formed, which at least partially with its outside ( 19a ) on the inside ( 11a ) of the outer part ( 11 ) is present. Motor vehicle warehouse ( 1 ) according to claim 5, wherein the first hydraulic stop ( 13 ) and / or the connection channel ( 17 ) and / or the second hydraulic stop ( 14 ) at least in sections through the outside ( 19a ) of the insertion component ( 19 ) and the inside ( 11a ) of the outer part ( 11 ) is / are formed. Insertion component ( 19 ) for use in a motor vehicle warehouse ( 1 ) according to one of the preceding claims, wherein the insertion component ( 19 ) is formed, at least in sections with its outer side ( 19a ) on the inside ( 11a ) of an outer part ( 11 ) the motor vehicle warehouse ( 1 ) and thereby a first hydraulic stop ( 13 ) and a connection channel ( 17 ), preferably also a second hydraulic stop ( 14 ), train.

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