Damping support device

Abstract

A mounting device, in particular to the mounting of an internal combustion engine on a chassis of a motor vehicle, which is provided with a fluid working chamber that is fluidically connected via at least one fluid channel to a fluid equalization chamber via at least one fluid channel in a housing. At the same time, a fluid damping chamber is provided, which is separated by an elastic membrane from the fluid working chamber and which is connected with fluidic connection via a throttling channel to an outer environment of the mounting device. The throttling channel is formed by a replaceable throttling element separately from the housing.

Claims

1. A mounting device for damping of the mounting of an assembly in a car body of a motor vehicle, comprising: a fluid working chamber which is fluidically connected by at least one fluid channel to a fluid equalization chamber provided for the mounting device in a housing, wherein a fluid damping chamber is separated by an elastic membrane from the fluid working chamber, and is fluidically connected to an outer environment of the mounting device via a throttling channel, wherein the throttling channel is formed within an exchangeable throttling element, which is separate from the housing, and which is arranged in a retaining element which is releasably secured to the housing, wherein the fluid working chamber and the fluid equalization chamber are separated by a separating element, wherein the at least one fluid channel is formed in the separating element by which the fluid working chamber and the fluid equalization chamber are in a fluidic connection, wherein the housing is provided with a flow channel, which is fluidically connected to the fluid damping chamber and in which the throttling element is at least partially arranged wherein the flow channel opens directly into the fluid damping chamber, wherein the housing passes through the separating element.

2. The mounting device according to claim 1, wherein the fluid damping chamber is arranged in the separating element and the membrane is fastened on the separating element.

3. The mounting device according to claim 1, wherein the retaining element is secured to the housing with latching and a supporting element of the retaining element receiving the throttling element is interposed in the flow channel.

4. The mounting device according to claim 1, wherein the flow channel is provided with an at least partially conical inner circumference surface.

5. The mounting device according to claim 4, wherein the throttling element is provided at its end which is arranged in the flow channel with a retaining projection, wherein a seal is arranged between the retaining projection and the supporting element.

6. The mounting device according to claim 5, wherein the seal is placed on the inner circumference surface of the flow channel.

7. The mounting device according to claim 1, wherein a first mounting position is arranged on a mounting cover delimiting the fluid working chamber together with the separating element and a second mounting position is connected with the housing.

Description

BRIEF DESCRIPTION OF THE FIGURES

(1) The invention will be next disclosed in more detail based on the embodiment that is illustrated in the figures without imposing any limitation on the invention. The figures show the following:

(2) FIG. 1 shows an illustration of a longitudinal sections through a mounting device for mounting an internal combustion engine in a motor vehicle car body,

(3) FIG. 2 shows a detailed view of a throttling element forming a throttling channel which is arranged in a retaining element, and

(4) FIG. 3 shows a detailed view of the throttling element.

DETAILED DESCRIPTION OF THE FIGURES

(5) FIG. 1 shows longitudinal view illustration of a section of the mounting device 1. The device is used for example to provide a damping connection between an assembly, in particular an assembly of an internal combustion engine and other devices, for example a car body of a motor vehicle. The mounting device 1 is provided with a fluid chamber 2, as well as a fluid outlet chamber 3. A longitudinal central axis 4 of the mounting device 1, along which the longitudinal section is arranged, is also indicated. The fluid working chamber 2 and the fluid equalization chamber 3 are in fluidic connection with each other via at least one fluid channel.

(6) The fluid equalization chamber 3 is arranged in a housing 5 of the mounting device.

(7) For example, the housing 5 is for this purpose equipped with an annular recess 6 in which is provided the fluid equalization chamber 3. In order to form the fluid equalization chamber 3, it can be provided in a preferred embodiment that an elastic element 7, in particular an elastomer element, is arranged in the housing 5, in particular in the annular recess 6. It can be fastened in a fluid-tight manner to a separating element 8 in order to form the fluid equalization chamber 3. For example, the element 7 is provided with retaining projections 9, which are clamped between the separating element 8 and the housing 5.

(8) The separating element 8 serves to separate the fluid working chamber 2 and the fluid equalization chamber 3. Accordingly, the separating element 8 is arranged between them. In the separating element 8 is arranged the at least one fluid channel by means of which the fluid working chamber 2 and the fluid compensation chamber 3 are in fluidic connection. The separating element 8 consists for example of a first part 10 and of a second part 11. The first part 10 is attached directly to the housing 5; in particular so that it is arranged on it. On the other hand, the second part 11 is attached to the to the first part 10, which is to say that it is not directly connected to the housing 5. The second part 11 is for example riveted to the first part 10.

(9) An elastic membrane 12 is held between both part 10 and 11 of the separating element 8, in particular by being clamped therein. The membrane 12 serves to separate a fluid damping chamber 13 in the separating element 8, in particular in the first part 10 of the separating element 8, which is completely overlapped by the membrane 12. The fluid damping chamber 13 is therefore in this respect completely fluidically separated from the fluid working chamber 2 as well as from the fluid equalization chamber 3.

(10) The membrane 12 is provided for example with an edge 14 which is engaged on one side in the first part 10, and on the other side also in the second part 11 of the separating element 8. The second part 11 of the separating element 8 is designed so as to be permeable to fluid, so that a direct fluidic connection is created between the fluid working chamber 2 and the membrane 12.

(11) The mounting device 1 is provided with a first mounting position 15 as well as with a second mounting position. With the first mounting position 15, for example the internal combustion engine is attached, and with the second mounting second mounting position, the car body of the motor vehicle is attached to the mounting device 1, so that the internal combustion engine is subsequently connected to the car body of the motor vehicle. The first mounting position 15 is arranged at a mounting cover 17, which is equipped with a spring body 18, in particular an elastomer. The spring body 18 is connected for example via a mounting core 19 to the first mounting position 15. A deviation from the embodiment illustrated here is of course also possible so that the first mounting position can be arranged also directly on the mounting core 19.

(12) The spring body 18 delimits together with the separating element 8 the fluid working chamber 2.

(13) In particular, the spring body 18 is provided with a recess which is overlapped or closed by the separating element 8. The mounting core 19 is embedded in the spring body 18, in particular so that it is cast in it. The spring body 18 can laterally grip the separating element 8, so that it is extended up to the housing 5. For example, the spring body 18 is attached to the housing 5 and/or the separating element 8 by means of a clamping clip 20.

(14) For example, the spring body 18 is guided via the clamping clip 20 into a guiding recess 21 with a guiding device 22 in the axial direction with respect to the longitudinal central axis 4. In particular, buckling of the spring body 18 in the radial direction can be prevented with the aid of the guiding device 22. The guiding device 22 is fastened for example to the car body of the motor vehicle. A second mounting position can be provided at the guiding device 22. In this case, the guiding device is preferably fastened to the housing 5.

(15) In order to further improve the damping effect of the mounting device 1 or to prevent undesirable noise, the fluid damping chamber 13 is fluidically connected via a throttling channel 23 to an outer environment 24 of the mounting device 1. The throttling channel 23 is in this case formed by a replaceable throttling element 25, which is separate from the housing 5. For example, the housing 5 is provided with an annular projection 26, which is at least partially gripped by the fluid equalization chamber 3 and projecting in the direction of the fluid damping chamber 13. In the embodiment shown here, the housing 5 is provided with a flow channel 27, which is preferably formed in the projection 26.

(16) For example, the flow channel 27 is arranged over its entire longitudinal extent directly and/or centrally with respect to the longitudinal central axis 4 of the mounting device 1 in the housing 5. The flow channel 27 is on one side fluidically connected to the fluid damping chamber 13. On the side of the flow channel 27 that is facing away from the fluid damping chamber 13, the throttling element 25 is engaged in therein. It is preferred when the flow channel 27 opens directly into the fluid damping chamber 13.

(17) For this purpose, the housing 5 penetrates, in particular with the projection 26, the separating element 8 up to the fluid damping chamber 13.

(18) The throttling element 25 is arranged in a retaining element 28 which is fixed by latching with a latching connector 29 (not shown here) to the housing 5. A weight 29 can be attached by means of a latching connector 29 to the retaining element 28. It is preferred when throttling element 25 penetrates through a supporting element 30 of the retaining element 28. The throttling element 25 preferably projects into the flow channel 27. Between the supporting element 30, in particular a free end of the supporting element 30, and the throttling element 25, in particular a retaining projection 31 of the throttling element 25, is arranged a seal 32, in particular by being clamped between the supporting element 30 and the throttling element 25. However, the seal 32 lies at least on the supporting element 30 as well as on an inner peripheral surface 33 of the flow channel 27. In particular, the inner circumferential surface 33 is provided with a conical design in the region in which the seal 32 is placed on it and it opens in the direction facing away from the fluid damping chamber 13. A simple centering of the throttling element 25 as well as reliable sealing can thus be realized by means of the seal 32.

(19) FIG. 2 shows a detailed illustration of the throttling element 25, of the seal 32, as well as of the retaining element 28. A latching connector 29 is also clearly shown in the figure, by means of which the retaining element 28 can be fastened by latching to the housing 5. The throttling element 25 is arranged in the supporting element 30 of the retaining element 28 and it fully penetrates through it, preferably in the axial direction, so that the throttling channel 23 opens in an inner volume 34 of the retaining element 28, which is in a permanent fluidic connection to the outer environment 34.

(20) As can be seen here, the edge of the throttling channel 23 is opened into the throttling element 25. In particular, the throttling element 25 is provided with a region that is mounted in the throttling channel 23, so that in particular the holding projection 31 is deployed only at a distance from the throttling channel 23. The throttling channel 23 is at least partially formed by the throttling element 25 on the one hand, together with the seal 32 and the supporting element 30 on the other hand.

(21) FIG. 3 shows a detailed view of the throttling element 25 with the throttling channel 23 formed therein. It is evident that the throttling channel 23 is provided with an open edge over the entire longitudinal extent in the throttling element 25, so that it is thus designed as a groove. As an alternative, an embodiment of the throttling channel 23 can be of course also realized in the throttling element 25. In this case, the throttling channel 23 can be designed for example in the form of a perforation or of a bore.

(22) A particularly effect damping can be realized by means of the embodiment of the mounting device 1 described above, both for low-frequency and for high-frequency vibrations of the internal combustion machine. In addition, the mounting device can be adapted to the vibration behavior of different internal combustion engines in a simple manner. For this purpose, the throttling element 25 is arranged on the housing 5 in an exchangeable manner, wherein the retaining element 28 is provided.