CN111572327B

CN111572327B - Support seat

Info

Publication number: CN111572327B
Application number: CN202010078736.6A
Authority: CN
Inventors: 马丁·莫尔; 本杰明·舒普
Original assignee: Sumitomo Riko Co Ltd
Current assignee: Sumitomo Riko Co Ltd
Priority date: 2019-02-18
Filing date: 2020-02-03
Publication date: 2023-08-08
Anticipated expiration: 2040-02-03
Also published as: DE102019001198A1; DE102019001198B4; CN111572327A

Abstract

A support, in particular for supporting an engine of a motor vehicle, comprising: a housing for connecting the mount to the first component; a core for connecting the mount to the second member; a pair of fastening elements fastenable to the housing, and an elastic element for elastically connecting the core and the housing together, wherein the elastic element has a pair of supporting elastic portions and a compressing elastic portion, wherein the supporting elastic portions extend between the core and one of the fastening elements, respectively, substantially in a longitudinal direction and/or a vertical direction of the holder, wherein the compressing elastic portions extend from the core to the housing substantially in a transverse direction of the holder, wherein in a state in which the fastening elements are fastened to the housing, the compressing elastic portions are pressed against the supporting portions of the housing by means of the supporting elastic portions, whereby the compressing elastic portions are preloaded.

Description

Support seat

Technical Field

The present invention relates to a support, in particular for motor vehicle engines.

Background

Such a support must withstand high loads in all spatial directions. On the one hand, they must be strong enough to support the mass of the vehicle engine in the vertical direction as well as in the longitudinal and transverse directions, and on the other hand, they must dampen the vibrations transmitted to the vehicle frame during operation of the vehicle engine. As described in prior art CN204077341, a conventional engine mount having a V-shaped elastic member or a stadionferne elastic member (stadionferrn) oriented in the longitudinal direction of the vehicle has a problem in that damping characteristics, in particular, while rigidity in the longitudinal direction and in the vertical direction of the vehicle can be well adjusted, it is difficult to provide cushioning characteristics or rigidity in the lateral direction of the motor vehicle as required. Thus, the operation of the motor vehicle can lead to considerable impairment of the ride comfort and to greater wear on the support. In practice, too little lateral stiffness results in a large relative movement in the lateral direction, which can be additionally enhanced by expanding the frame in the lateral direction. This creates additional tensile load on the elastomeric elastomer conventionally used in each mount, which negatively affects the life of the elastomeric elastomer. Furthermore, in the conventional mount, natural resonance in the lateral direction (so-called lateral vibration) cannot be set with sufficient accuracy.

Disclosure of Invention

It is therefore an object of the present invention to provide a support which is inexpensive to manufacture on the one hand and on the other hand enables an improved ride comfort while reducing wear.

One aspect of the invention is a support, in particular for an engine of a motor vehicle, comprising: a housing for connecting the mount to the first component, a core for connecting the mount to the second component, a pair of fastening elements mountable on the housing, and an elastic element for elastically connecting the core and the housing to each other, wherein the elastic element has a pair of supporting elastic portions each extending between the core and one of the fastening elements substantially in a longitudinal direction and/or a perpendicular direction of the mount, and a compressing elastic portion extending from the core to the housing substantially in a transverse direction of the mount, wherein in a state in which the fastening elements are fixed to the housing, the compressing elastic portion is pressed against the supporting portion of the housing by means of the supporting elastic portion, so that the compressing elastic portion is preloaded.

Advantageously, the support according to the invention can have a high rigidity, which can be adjusted arbitrarily in the transverse direction, by preloading. In the transverse direction, transverse forces acting on the core along the support portion of the housing may be absorbed by compressing the resilient portion, while in the opposite transverse direction, transverse forces acting on the core away from the support portion may be absorbed by supporting the resilient portion acting as a shear spring. When a lateral force acts on the core in a direction away from the support portion, the disengagement of the compression elastic portion from the support portion of the housing can also be prevented by the preload, thereby further improving riding comfort and reducing wear.

In other words, advantageously, upon expansion of the transverse load or the vehicle frame, by the separately implemented compression elastic portion, no tensile load is generated in the compression elastic portion, and in the support elastic section, a shear stress is generated mainly in response to the transverse load. On the one hand, the transverse stiffness of the compression spring portion may be increased or adjusted as desired by preloading. On the other hand, when the preload is selected such that the greatest relative movement is compensated in the lateral direction, the compressive spring portion is prevented from lifting from the support portion of the housing or the rear wall of the housing.

In addition, the natural frequency may be arbitrarily set in the lateral direction, for example, to reduce or avoid so-called "lateral shake" during operation. The natural frequency may for example be in the region of more than 7Hz, which is advantageous for ride comfort. In particular, the adjustability in the transverse direction may be substantially independent of the longitudinal stiffness and the vertical stiffness, which may be due to the mutually perpendicular directions of extension of the compression elastic portion and the support elastic portion. In other words, the mount may be configured such that the stiffness of the mount in the transverse direction or the self-resonance in the transverse direction may be substantially adjustable independently of the stiffness in the longitudinal direction and/or the vertical direction.

In the context of the present application, the term "coupled" refers to the mechanical or chemical coupling of two components such that the components are no longer able to move relative to each other, unless otherwise indicated. In particular, the term "bonded" means that the two components can be connected to each other by bolts and/or an adhesive layer. Furthermore, the two parts may be joined together by riveting or welding. Furthermore, in the context of the present application, the term "in a fastened state" refers to a state in which the fastening element, in particular the fastening element in a desired position, is fastened to the housing.

Furthermore, in the context of the present application, the directional designations "longitudinal direction", "vertical direction" and "transverse direction" refer to directions relative to the support as claimed. When the support is in the mounted state in a car, in particular a truck, the longitudinal direction, the vertical direction and the transverse direction of the support may coincide with the longitudinal direction, the vertical direction and the transverse direction, respectively, of the motor vehicle. In the context of the present application, when describing the support with respect to the general direction or directions of the motor vehicle, it is to be understood from the mounted state of the support.

For the purposes of this application, "preloaded" is understood to mean that mechanical stresses are introduced into the stressed resilient element in the absence of external loading of the support. In the context of the present application, the measure of the degree of preload may be a so-called preload distance. The preload distance is the distance that one of the spring portions deflects from a state without external load (no preload state) to a preload state.

The mount may be an engine mount, in particular for a motor vehicle such as a truck. The mount may be used for so-called four-point engine mounting. However, it is not limited thereto.

The housing may be formed of a metallic material or plastic. For example, it may be formed by a die casting process. For metallic materials, the housing may be formed by, for example, aluminum die casting or cast iron. The housing may be configured in a substantially L-shaped cross section transverse to the longitudinal direction and may be configured in a substantially U-shaped cross section transverse to the transverse direction. The core, the elastic element and the pair of fastening elements may be configured as an elastic unit. In particular, the elastic element may be injected onto the core and the pair of fastening elements or otherwise connected thereto. The housing may have a receiving portion into which the elastic unit may be inserted. The receptacle may be constrained to pass vertically downward through the bottom of the housing, longitudinally through a pair of longitudinal wall portions of the housing, and transversely through side wall portions of the housing. The side wall portion comprises a support portion, which is arranged in particular in an upper part of the side wall portion. The side wall portion may comprise one or more attachment recesses extending through the side wall portion in a transverse direction, by means of which attachment recesses the housing may be connected, in particular bolted, to a vehicle frame, for example, as the first component. Other types of connections are also possible, such as rivets, glues, etc.

The core may be formed of a metal material or plastic, and the core may be disposed in a vertical direction at least at an upper portion of the elastic member. The core is particularly designed such that it is possible to bring the force evenly into the supporting elastic portion and the compressing elastic portion. For this purpose, the core may have force introduction surfaces, each of which is substantially perpendicular to the main extension direction of the supporting elastic portion and the compression elastic portion. The core may comprise one or more mounting recesses extending in a vertical direction, by means of which the core may be connected, in particular bolted, to a vehicle engine, for example, as a second component. The core may also include one or more mounting pins extending upwardly from the core in a vertical direction, which may be used as positioning aids for assembling the vehicle engine.

The pair of fastening elements may each be sheet-like and fastened to the housing, in particular at a lower portion of the housing. The fastening element may have a surface portion and at one end of the surface portion an approximately right-angled curvature, wherein the curvature may comprise a fastening hole through which the fastening element can be screwed, in particular, to the housing. The housing may have a pair of fastening screw holes in a lower portion of the housing, which extend substantially transversely through the housing, in particular through the bottom portion and/or through the longitudinal wall portion. The lower end of the supporting elastic section can be connected, in particular sprayed, vulcanized or glued, to the surface section of the fastening element. The fastening element or its surface section may also be embedded in the lower end of the respective supporting elastic portion. The housing may have a pair of guide grooves extending substantially in the lateral direction at a lower portion of each fastening element, and guiding side edges of the surface portion of the corresponding fastening element when the elastic unit is inserted into the receiving portion of the housing. In the fastened state, the surface normal of the surface portion extends in the longitudinal and/or vertical direction, in particular is inclined in the longitudinal and vertical direction. The surface normal direction of the surface portion may be substantially the same as the extending direction of the corresponding supporting elastic portion.

The elastic element extends between the pair of fastening elements and the core and, in the fastened state, between the core and the support portion of the housing. In particular, the elastic member is formed of an elastomeric material, and may include a pair of supporting elastic portions at a vertically lower portion of the elastic member, and the elastic member may have a compressing elastic portion at a vertically upper portion of the elastic member. Here, the supporting elastic portion may be roof-shaped, V-shaped or wedge-shaped. The support elastic portion may also be referred to as a V-shaped elastic member. For example, the pair of supporting elastic portions may be implemented by wedge-shaped elastic members. However, the compression elastic portion may be realized by a compression elastic member, which may be configured to be distant from the core in the lateral direction. The pair of supporting elastic portions and the compressing elastic portion may be integrally formed, but may also be formed separately from each other, and particularly formed of different materials. Also in an integrated embodiment, the pair of supporting elastic portions and the compressing elastic portion may be formed of a plurality of materials by multi-component injection molding. The pair of supporting resilient portions extend substantially in the region of the housing below the core. Instead, the compression spring portion may be connected to the core, protruding from the core in the lateral direction. However, the compression elastic portion may also be connected to the housing and protrude from the housing in a direction opposite to the core. Alternatively, the compression spring portion may also be configured as a separate component which is arranged between the core and the support portion of the housing before the fastening element is fixed.

By fixing the fastening member to the housing, it is possible to push substantially one lower portion of the supporting elastic portion in the vertical direction into the housing by an amount a toward the supporting portion of the housing with respect to the restoring force of the elastic member, thereby pressing the compressing elastic portion against the supporting portion of the housing and thereby elastically displacing one upper portion of the supporting elastic portion in the vertical direction away from the supporting portion in the lateral direction with respect to the lower portion thereof. In other words, by fastening the fastening element to the housing, the compression spring portion may be preloaded with respect to the support spring portion. The restoring force, in particular the shearing force, of the supporting elastic portion generated pushes the compression elastic portion towards the supporting portion of the housing, so that the compression elastic portion is compressed and preloaded by an amount S. In other words, in the fastened state, i.e. in the preloaded state, the supporting elastic portion and the compression elastic portion are against each other. The preload force may be introduced into the supporting resilient portion substantially by the pushing force from the fastening element, while the reaction force from the supporting portion of the housing may be introduced into the compressing resilient portion substantially by the shearing force. The quantity S can be derived from the dynamic balance of the supporting elastic portion and the compressing elastic portion

Wherein C is _T Is the recovery or elastic constant at the supporting elastic part, C _D Is the recovery or spring constant at the compression spring portion.

The preloading of the supporting elastic portion with respect to the compressing elastic portion enables a targeted and precise setting of the elastic or damping properties of the abutment in the transverse direction substantially independently of the other spatial directions (longitudinal and perpendicular directions).

The above-mentioned abutments can be arranged, for example, in pairs twice in a motor vehicle (four abutments per vehicle), in particular mirror-symmetrical to one another with respect to the longitudinal axis of the motor vehicle, in order to be able to compensate for an asymmetry of the elastic or damping properties of the abutment in the transverse direction, which is formed by the asymmetry of the abutment in the transverse direction.

The stiffness of the abutment in the transverse direction may be adjusted substantially independently of the stiffness in the longitudinal and/or vertical direction.

The predetermined or predefinable preloading path of the supporting spring part may span substantially in the transverse direction in the state in which the fastening element is fastened to the housing. "crossing" may mean an amount a of a preload path in which the fastening element or an end portion of the support elastic portion connected to the fastening element is pushed into the housing or the recess in a state in which the fastening element is fastened to the housing.

Each fastening element may have a recess, respectively, by means of which the respective fastening element can be fastened to the housing by means of a bolt, and the supporting spring part may be preloaded into the housing, respectively, against the compression spring part by screwing the bolt through the recess of the respective fastening element. The fastening element can be fixed by means of pins or rivets protruding from the housing, on which the recess is guided and subsequently bent or caulking.

In the state in which the fastening element is fastened to the housing, the supporting elastic portion may be preloaded mainly by shearing force or shearing force in the transverse direction, and the compressing elastic portion may be preloaded mainly by pressure in the transverse direction. That is, the restoring force exerted by the supporting elastic portion in the fastened state of the fastening element may be mainly a shearing force or a shearing force counteracting the deflection of the supporting elastic portion in the lateral direction. The restoring force exerted by the compressed elastic portion due to the preload of the supporting elastic portion may be mainly a pressure in the lateral direction. The pressure of the compression spring portion is caused by the preload of the support spring portion pressing the compression spring portion laterally against the support portion of the housing.

The support elastic portion and the compression elastic portion may be constructed in one piece or in multiple pieces. The supporting elastic portion and the compressing elastic portion may be constructed as a single member. The supporting elastic portion and the compressing elastic portion may be sequentially constructed as two or more separate members. Further, the supporting elastic portion may be formed by two-component injection molding together with the compression elastic portion.

The elastic element may have a pair of lateral stops in the lateral direction around the compressed elastic portion. These lateral stops may impinge on the side wall portions or the support portions at a predetermined lateral deflection of the resilient element, thereby preventing the compression resilient portion from being excessively compressed in the lateral direction. They also act to limit travel so that the resilient unit, including the compression resilient portion, the support resilient portion and the core, do not move too much relative to each other and do not collide with other adjacent components. The lateral stop may be formed by itself from an elastomeric material and/or from a material other than an elastic element. The lateral stop may be provided at a vertically upper portion of the elastic element or at a vertically lower portion of the elastic element. The lateral stop may be integrally formed with the compression spring portion and/or the support spring portion. A pair of lateral stoppers may be formed longitudinally on both sides of the compression elastic portion.

The supporting elastic portion and the compressing elastic portion may be formed of the same elastomeric material or different elastomeric materials.

In the non-preloaded state, the support elastic portion may be biased in a lateral direction toward the support portion of the housing, and in the preloaded state the support elastic portion may have substantially no lateral bias. In other words, the support spring portion may be biased in the non-preloaded state such that this tilting can be counteracted in the preloaded state and the support spring portion extends substantially in the longitudinal and/or vertical direction. In this way it is ensured that the supporting elastic portion in the preloaded state is able to optimally absorb forces acting on the core in the vertical and/or longitudinal direction.

The compression spring portion may protrude laterally from the core to the support portion of the housing. In other words, the compression spring portion may taper laterally from the core to the support portion of the housing. For example, the compression spring portion may taper in a conical, tapered, pyramid or wedge shape.

The first component may be a frame or subframe of a truck and the second component may be an engine, an adapter element, a support arm or subframe of a truck.

The stiffness of the abutment in the transverse direction may be adjusted by being substantially independent of the stiffness in the longitudinal and/or vertical direction.

The accompanying drawings, which are intended to illustrate by way of example embodiments in accordance with the subject matter of the invention, are described below. It should be understood that the subject matter of the present invention is not limited to the embodiments described below. The various features may be combined into other embodiments.

Drawings

Fig. 1 is a perspective view of an embodiment of a stand with a housing hidden.

Fig. 2 is a perspective view of the mount of fig. 1 from another angle.

FIG. 3 is a cross-sectional view of a mount perpendicular to the vertical with a clear core and compression spring.

Fig. 4a is a cross-sectional view of the support perpendicular to the vertical to show the preloading of the support spring.

FIG. 4b is a cross-sectional view of the mount perpendicular to the vertical with the core and compression spring shown clearly to illustrate the preload of the compression spring.

List of reference numerals

1. Support seat

2. Shell body

4. Core

6a,6b fastening element

7. Elastic element

8a,8b support the resilient portion

10. Compression spring portion

12. Branch into part

14a,14b recesses

16a,16b,16c transverse stop

17a,17b longitudinal stop

18. Mounting pin

20a,20b mounting recesses

22a,22b,22c vertical stops

24a,24b fastening screw holes

26a,26b are inserted into the recesses

28a,28b metal plates

Detailed Description

Fig. 1 shows a V-shaped, elastic element 7 formed of an elastomeric material of a support 1 with a core 4 according to the invention. To illustrate the different spatial directions, the longitudinal, transverse and vertical directions are illustrated by the auxiliary coordinate system. In order to provide better visibility, the housing is hidden in fig. 1 and 2.

The core 4 is arranged in the upper part of the elastic element 7 and is made of metal. The core 4 has a mounting pin 18 and mounting recesses 20a,20b. The mounting pin 18 extends in the vertical direction and protrudes upward in the vertical direction away from the core 4. As described above, the mounting pin 18 may be used as a positioning aid in mounting a motor vehicle engine. The mounting recesses 20a,20b are arranged around the mounting pin 18 and extend in the vertical direction inside the core 4. By means of the mounting recesses 20a,20b, the motor vehicle engine can be mounted on the support 1. In this case, the engine is usually not bolted directly to the support, but is usually connected by means of adapter elements, in particular so-called support arms. The elastic element 7 shown in fig. 1 is divided into two supporting elastic portions 8a,8b and one compression elastic portion 10. The core 4 in fig. 1 is wedge-shaped. The core 4 is mechanically coupled to the supporting elastic segments 8a,8b and the compression elastic segment 10, wherein the supporting elastic segments 8a,8b and the compression elastic segment 10, which are formed, for example, from one or more elastomeric materials, may be vulcanized onto the core. The supporting elastic portions 8a,8b are arranged such that they form a V-shape, a wedge-shape or a roof shape in the longitudinal direction. The compression elastic portion 10 protrudes from the core 4 in the lateral direction, i.e. perpendicular to the longitudinal and vertical directions. Vertical stoppers 22a,22b extending substantially vertically upward are arranged on both sides around the compression elastic portion 10 in the longitudinal direction, and the vertical stoppers 22 elastically support the mass of the engine in the case where the engine is mounted on the mount 1, for example. In addition, another vertical stopper 22c may be disposed at the vertical lower side of the core 4 between the supporting elastic portions 8a, 8b. The vertical stoppers 22a,22b,22c shown are formed of an elastomer and have parallel grooves in the longitudinal direction. However, the shape of the vertical stop may also differ from that shown. For example, the vertical stops 22a,22b,22c are structurally optimized for the particular application of the support 1. In addition, it is shown in fig. 1 that the elastic element 7 above the supporting elastic portions 8a,8b has longitudinal stops 17a,17b approximately at the level of the core 4, which protrude in the longitudinal direction and extend substantially in the transverse direction. The longitudinal stops 17a,17b are also formed of an elastomer and may also be adapted to the particular application. The longitudinal stops 17a,17b are shown extending transversely along the transverse edges of the core 4.

Furthermore, fig. 1 shows fastening elements 6a,6b. The fastening elements 6a,6b have recesses 14a,14b in the curved portions corresponding to a geometry of about 90 ° or about the housing (not shown here), respectively, so that the elastic element 7, more precisely the supporting elastic portions 8a,8b, are fastened to the housing of the support 1 in the lateral direction by means of the recesses 14a,14b by means of bolts not shown in the figures. The bearing surfaces for the screw heads of the fastening elements 6a,6b may be free of elastomeric material in order to improve the adjustment properties of the screw connection. The portion of the fastening element 6a,6b that supports the connection of the elastic portions 8a,8b is substantially flat and planar and extends transversely to the curved portion. The fastening elements 6a,6b are arranged at the lower ends of the elastic element 7 in the vertical and longitudinal direction supporting the elastic portions 8a, 8b. The fastening elements 6a,6b are also shaped such that the portions of the fastening elements 6a,6b in which the recesses 14a,14b are arranged, i.e. the curved portions, protrude at the lower ends of the support elastic portions 8a,8b in the longitudinal and vertical directions.

Fig. 2 shows a rear view (essentially opposite to the lateral direction) of the support shown in fig. 1 with the housing hidden in a perspective view. Fig. 2 shows a compression spring portion 10 which extends from the core 4 in a tapering, in particular substantially prismatic or conical, manner in the transverse direction. In addition to the vertical stoppers 22a,22b, lateral stoppers 16a,16b formed of an elastomer material, which protrude in the lateral direction but are retracted with respect to the compression elastic portion 10, are provided in the longitudinal and vertical directions around the compression elastic portion 10. These lateral stops 16a,16b prevent excessive compression of the compression spring 10 when the compression spring is pressed against the rear wall of the housing (not shown in fig. 2) of the support 1, for example under heavy load. Furthermore, the lateral stops 16a,16b act as travel limits, so that the elastic element 7 and the core 4 cannot have too great a relative movement and may cause collisions with other components not shown here. The lateral stop may also have parallel grooves extending in the vertical direction. These grooves are typically used to "soften" the impact behavior. The lateral stops 16a,16b may be geometrically optimized for a particular application. For example, the lateral stops 16a,16b may also be formed as convex curves. In addition to the lateral stops 16a,16b, an additional lateral stop 16c may be arranged vertically below the compression spring portion 10.

All the stops shown in figures 1 and 2 can be connected to the core 4 or the elastic element 7 by vulcanization.

Fig. 3 shows a cross section of the support 1 perpendicular to the vertical direction, which cross section in the plane of the longitudinal and transverse directions is approximately at the level of the recesses 14a,14b of the fastening elements 6a,6b. Fig. 3 shows the structure of the holder 1. In this case, also a portion of the core 4 and the compression elastic portion 10 are shown, these portions being perpendicular to the cross-section shown, the different hatching lines in the figures representing different components and/or materials.

Fig. 3 shows how the unit of the elastic element 7, the core 4 and the fastening elements 6a,6b in fig. 1 and 2 is pushed in the housing 2 until the compressed elastic part 10 abuts or attaches in the lateral direction against the support part 12 of the housing wall, which housing 2 is formed in the shown cross-section in a U-shape or in a clip-shape. The supporting elastic portions 8a,8b partially protrude in the lateral direction of the housing 2 in this state. The housing 2 has fastening screw holes 24a,24b at the same level as the vertical direction of the recesses 14a,14b arranged on the fastening elements 6a,6b. By means of these fastening screw holes 24a,24b, the fastening elements 6a,6b and thus the elastic element 7 (more precisely the supporting elastic portions 8a,8 b) can be fastened to the housing 2 by means of bolts not shown in the figures. Alternatively, pins may be provided complementarily to the recesses 14a,14b, the pins passing through the recesses 14a,14b and then being pressed to attach the support elastic portions 8a,8b to the housing 2. Thereby, the supporting spring portions 8a,8b together with the fastening elements 6a,6b are moved into the housing 2 and thus preloaded on the shown compression spring portions 10.

As shown in fig. 3, the fastening elements 6a,6b in a cross section shown perpendicular to the vertical direction are formed substantially in an L-shape at substantially the height of the recesses 14a,14b of the fastening elements 6a,6b. The fastening elements 6a,6b are connected to the vertical lower ends of the supporting elastic portions 8a, 8b. The fastening elements 6a,6b may for example be vulcanized onto the supporting elastic portions 8a,8b, but the fastening elements 6a,6b may also be pushed into the supporting elastic portions 8a,8b via the insertion recesses 26a,26b and glued thereto for example.

Furthermore, fig. 3 shows that the supporting elastic parts 8a,8b can be designed as several parts, respectively. For example, the supporting elastic parts 8a,8b may be divided into supporting elastic sub-parts 8aa,8ab, 8ba and 8bb by metal plates 28a,28b, respectively. The supporting elastic portions 8aa,8ab may be bonded to the metal plate 28a, for example, by vulcanization. Similarly, the same applies to the support elastic sub-portions 8ba, 8bb and the metal plate 28b. On the one hand, the metal plates 28a,28b may increase the stability of the supporting elastic portions 8a, 8b. On the other hand, by means of the metal plates 28a,28b, the damping characteristics of the support elastic portions 8a,8b can be affected. For example, by providing one metal plate at each supporting elastic portion, the rigidity can be improved by about 2 times. By providing two metal plates per supporting elastic portion, the rigidity can be improved by about 4 times. Various materials, particularly elastomeric materials, may also be provided for the support elastomer subsection.

Fig. 4a and 4b serve to explain the concept of preloading the elastic element 7 in the transverse direction of the support 1.

For this purpose, fig. 4a shows a cross section of the carrier 1 along the recesses 14a,14b of the fastening elements 6a,6b in a plane perpendicular to the vertical direction. In the unfastened state of the fastening elements 6a,6b on the housing 2, the elastic element 7 is pushed into the housing 2 such that the pressure elastic portion 10 abuts against the support portion 12 of the housing 2 as shown in fig. 3. The support elastic portions 8a,8b partially protrude from the housing 2 in the lateral direction. In this state of the seat 1, the supporting elastic portions 8a,8b are not in tension, i.e. are not preloaded. In this non-preloaded state of the support spring portions 8a,8b, a preloaded path of the support spring portions 8a,8b on the housing in the fastened state of the fastening elements 6a,6b can be identified. The preloading path a corresponds to the distance by which the fastening elements 6a,6b and the vertical lower ends of the supporting elastic parts 8a,8b are displaced to the housing 2 upon transverse mounting (e.g. by screwing bolts into the fastening screw holes 24a,24 b). In other words, in the state in which the fastening elements 6a,6b are mounted on the housing, the support elastic portions 8a,8b are preloaded with the preload path a. The preload path a may be, for example, between about 1mm and about 50mm, or between about 5mm and about 30 mm. The mounted state of the fastening elements 6a,6b is not shown in the figures. In the unsecured state of the fastening elements 6a,6b and in the un-preloaded state of the supporting elastic parts 8a,8b as shown in fig. 3, 4a and 4b, the preload path a=0.

Fig. 4b shows a cross section of the support 1 which is in principle identical to fig. 4 a. However, for better understanding, the compression spring 10 and the core 4 are also shown vertically above the shown cross section.

Fig. 4b shows how the compression spring 10 is compressed or compressed in the transverse direction by an amount S +.0 by the coupling of the core 4 to the support spring 8a,8b caused by the preload of the support spring 8a, 8b. S results from the force balance of the restoring forces acting on the one hand mainly on the shear-stress preloaded support spring sections 8a,8b and on the other hand mainly on the pressure-preloaded compression spring section 10. S is derived from the lateral force balance by:

C _T A-C _D S＝0,

wherein C is _T Is the recovery or spring constant in the transverse direction of the support 1 of the support spring portions 8a,8b, C _D Is the recovery or spring constant in the transverse direction of the abutment 1 of the compression spring 10.

As already mentioned, by preloading the supporting elastic portions 8a,8b in the preloading path a and letting the associated compression of the compression elastic portion 10 be S, the stiffness of the support 1 in the transverse direction can be adjusted precisely on the support for each requirement independently of the stiffness of the support 1 in the vertical and longitudinal directions. In addition, the support 1 is inexpensive to manufacture.

Claims

1. A support (1) for supporting an engine of a motor vehicle, comprising:

-a housing (2) for connecting the support (1) to a first component;

-a core (4) for connecting the support (1) to a second component;

a pair of fastening elements (6 a,6 b) which can be fastened to the housing (2), and

an elastic element (7) for elastically connecting together said core (4) and said housing (2),

wherein the elastic element (7) has a pair of supporting elastic portions (8 a,8 b) and a compression elastic portion (10),

wherein the supporting elastic portions (8 a,8 b) extend between the core (4) and one of the fastening elements (6 a,6 b) along the longitudinal and/or vertical direction of the support (1), respectively,

wherein the compression elastic portion (10) extends from the core (4) to the housing (2) in a transverse direction of the support (1),

wherein, in the state in which the fastening elements (6 a,6 b) are fastened to the housing (2), the compression spring (10) is pressed against a support (12) of the housing (2) by means of the support springs (8 a,8 b), whereby the compression spring (10) is preloaded,

the fastening elements (6 a,6 b) each have a recess (14 a,14 b) by means of which the corresponding fastening element (6 a,6 b) is fastened to the housing (2) by means of a bolt, the supporting elastic portions (8 a,8 b) being preloaded in the housing (2) in such a way as to bear against the compression elastic portions (10), respectively, by screwing the bolt through the recesses (14 a,14 b) of the corresponding fastening element (6 a,6 b).

2. The mount (1) according to claim 1, wherein the stiffness of the mount (1) in the transverse direction is adjustable independently of the stiffness in the longitudinal direction and/or in the vertical direction.

3. The mount (1) according to claim 1 or 2, wherein the predetermined or predefinable preloading path of the supporting elastic portion (8 a,8 b) spans in a transverse direction of the mount (1) in a state in which the fastening element (6 a,6 b) is fastened on the housing (2).

4. The mount (1) according to claim 1 or 2, wherein, in the state in which the fastening element (6 a,6 b) is fastened on the housing (2), the supporting elastic portion (8 a,8 b) is preloaded in the transverse direction mainly by shear forces, and the compression elastic portion (10) is preloaded in the transverse direction mainly by pressure forces.

5. The support (1) according to claim 1 or 2, wherein the supporting elastic portion (8 a,8 b) and the compression elastic portion (10) are configured in one piece or in multiple pieces.

6. The mount (1) according to claim 1 or 2, wherein the elastic element (7) has a pair of lateral stops (16 a,16 b) in the lateral direction around the compression elastic portion (10).

7. The support (1) according to claim 1 or 2, wherein the supporting elastic portion (8 a,8 b) and the compression elastic portion (10) are formed of the same elastomeric material or of different elastomeric materials.

8. The mount (1) according to claim 1 or 2, wherein in the unloaded state the support elastic portion (8 a,8 b) is deflected in a transverse direction of the mount (1) towards the support portion (12) of the housing (2), in the preloaded state the support elastic portion (8 a,8 b) is not deflected in the transverse direction.

9. A support (1) according to claim 1 or 2, wherein the compression elastic portion (10) extends in the transverse direction from the core (4) to a supporting portion (12) of the housing (2).

10. The mount (1) according to claim 1 or 2, wherein the first component is a frame or subframe of a truck and the second component is an engine, an adapter element, a support arm or subframe of a truck.