阅读说明：本技术 保持装置和用于保持装置的热防护罩 (Holding device and heat shield for a holding device ) 是由 F.耶尔马兹 K.卡默勒 N.雷纳 S.柯特豪斯 于 2020-04-17 设计创作，主要内容包括：本发明涉及一种用于将机组(10)、特别是泵固定在机动车中的保持装置(12),所述保持装置具有保持元件(14),其中,保持元件(14)具有用于将保持元件(14)安装在机动车中的固定区段(16),并且其中,保持元件(14)构造用于容纳机组(10),并且其中,保持元件(14)具有至少一个弹性体区段(18)。本发明提出,保持装置(12)具有一个固定在弹性体区段(18)上的热防护罩(40),所述热防护罩构造用于至少部分地屏蔽机组(10)免受由机动车的组件引起的热作用的影响。(The invention relates to a holding device (12) for fixing a unit (10), in particular a pump, in a motor vehicle, having a holding element (14), wherein the holding element (14) has a fixing section (16) for mounting the holding element (14) in the motor vehicle, and wherein the holding element (14) is designed to accommodate the unit (10), and wherein the holding element (14) has at least one elastomer section (18). The invention proposes that the holding device (12) has a heat shield (40) which is fastened to the elastomer section (18) and which is designed to shield the aggregate (10) at least partially from the effects of heat caused by components of the motor vehicle.)

1. A holding device (12) for fixing an assembly (10), in particular a pump, in a motor vehicle, having a holding element (14), wherein the holding element (14) has a fixing section (16) for mounting the holding element (14) in the motor vehicle, and wherein the holding element (14) is designed to accommodate the assembly (10) and wherein the holding element (14) has at least one elastomer section (18), characterized in that the holding device (12) has a heat shield (40) fixed to the elastomer section (18), which is designed to shield the assembly (10) at least partially from thermal effects caused by components of the motor vehicle.

2. The holding device (12) according to claim 1, wherein the elastomer section (18) has an inner region (30) for accommodating the aggregate (10), wherein in particular the elastomer section (18) rests with its inner region (30) on the aggregate (10), and wherein the inner region (30) is preferably configured substantially rotationally symmetrically with respect to an axial direction (28), and in particular the elastomer section (18) is configured substantially annularly, in particular as an elastomer holder which forms the holding element (14).

3. The holding device (12) according to one of the preceding claims, characterized in that the heat shield (40) has a shielding section (42) extending substantially in a radial direction (29), wherein in particular the shielding section (42) substantially covers at least partially a housing side of the aggregate (10).

4. The holding device (12) according to one of the preceding claims, characterized in that at least one, preferably two, coupling sections (60) are arranged on the shielding section (42), which coupling sections preferably extend substantially in the axial direction (28) and are provided for fixing the heat shield (40) on the elastomer section (18).

5. The holding device (12) according to any one of the preceding claims, wherein the elastomer section (18) has a receiving section (70) complementary to the at least one coupling section (60).

6. The holding device (12) according to one of the preceding claims, wherein the receiving section (70) is configured as a receiving opening (72), in particular slot-shaped, which extends substantially in an axial direction (28), into which the coupling section (60) can be inserted, in particular can be passed.

7. The holding device (12) according to one of the preceding claims, characterized in that the shielding section (42) is constructed in one piece with the at least one coupling section (60), wherein the heat shield (40) preferably comprises a metal and/or a composite material.

8. Holding device (12) according to one of the preceding claims, characterized in that the coupling section (60) and/or the receiving section (70, 72) have a latching mechanism (62), wherein the latching mechanism (62) is in particular designed as at least one, preferably two latching hooks, wherein the latching hooks are preferably designed such that they have one, two, three or four latching surfaces, by means of which the latching hooks can be placed in a latching manner on the receiving section (70, 72) and/or the coupling section (60).

9. Holding device (12) according to one of the preceding claims, characterized in that the coupling section (60) has an axial stop (64) for limiting the insertion depth of the coupling element (60) into the receiving section (70, 72), wherein the axial stop (64) is configured in particular as at least one, preferably two stop hooks, wherein in particular the stop hooks (64) and the latching hooks (62) are configured in a shape-matched manner.

10. The holding device (12) according to one of the preceding claims, characterized in that the shielding section (42) is substantially disk-shaped, wherein the shielding section (42) has a preferably central through-opening (44) for accommodating a fluid inlet (24) of the aggregate (10) extending substantially in an axial direction (28).

11. The holding device (12) according to one of the preceding claims, wherein the shielding section (42) has a planar projection (50) which at least partially covers a fluid outlet (26) of the aggregate (10) which extends substantially in a radial plane, wherein the projection (50) is preferably at least partially of shell-shaped, in particular semi-tubular, design.

12. The holding device (12) according to one of the preceding claims, characterized in that the shielding section (42) has a circumferential flange (66) which extends substantially in the direction of the aggregate (10), wherein the shielding section (42) is preferably constructed in one piece.

13. The holding device (12) according to one of the preceding claims, characterized in that the fastening section (16) is configured as one, preferably two, receiving openings for a screw connection.

14. The holding device (12) according to one of the preceding claims, characterized in that the fastening section is designed as an insert (80) for the elastomer section (18), wherein the insert (80) preferably has one or more connecting bolts (82) for fastening to the motor vehicle.

15. A heat shield (40) for a holding device (12) according to any one of the preceding claims, characterized in that the heat shield (40) is configured for at least partially shielding the aggregate (10) from thermal effects caused by components of the motor vehicle.

16. A holding element (14) for a holding device (12) according to one of the preceding claims, characterized in that the holding element (14) is designed to accommodate an assembly (10), wherein the holding element (18) has at least one elastomer section (18), wherein the elastomer section (18) is designed to accommodate a heat shield (40) according to claim 15.

Technical Field

The invention relates to a holding device, a heat shield for a holding device and a holding element for a holding device of the type described in the independent claims.

Background

It is known to provide a thermal protection element to protect the assembly. Such heat protection elements are usually designed as box-like elements which surround the component to be protected and are positioned in a defined manner relative to the component arranged in the interior space on account of their axial and radial stop surfaces. Furthermore, it is also known to mount heat protection elements on rigid components in the construction space. Such heat protection elements are often associated with high installation space requirements.

Disclosure of Invention

The invention relates to a holding device for fixing an assembly, in particular a pump, in a motor vehicle, having a holding element, wherein the holding element has a fixing section for mounting the holding element in the motor vehicle, and wherein the holding element is designed to receive the assembly, and wherein the holding element has at least one elastomer section. It is proposed that the holding device has a heat shield fastened to the elastomer section, which heat shield is designed to at least partially shield the aggregate from thermal effects caused by components of the motor vehicle.

The holding device according to the invention, which has the features of the independent claims, has the advantage that by fixing the heat shield directly on the elastomer section of the holding element, the transmission of shaking and vibration loads of the motor vehicle to the heat shield can be reduced in an advantageous manner, so that the heat shield can be fixed in a particularly space-saving manner at a slight distance from the unit itself. In the hybrid technology sector, in particular, due to its high installation space requirements, it may occur that the assembly is arranged very close to hot components, such as, for example, components of a combustion drive. By fastening the heat shield to the elastomer section, the assembly can be protected in a particularly space-saving manner from the radiant heat of these heat sources. The advantage of the retaining device is that such a heat shield can be used in a particularly simple and cost-effective manner in a plurality of component arrangements in a motor vehicle. In particular, existing systems can be equipped with such a heat shield, which can advantageously be installed on the user side.

Within the scope of the present invention, a heat shield is to be understood in particular as an element which reduces the transfer of thermal energy or the heat flow in the direction of the assembly. In particular, the heat shield reduces heat transfer by convection and/or heat radiation.

Preferably, in this case, the heat transfer from the components surrounding the unit to the unit may be reduced to such an extent that the unit is not heated above the critical temperature in a typical time scale.

In the construction and design of system components, such as, for example, cooling circulation pumps for motor vehicles, the expected dynamic loads of the components of the system components (for example, circuit boards and pin connections) in particular during operation of the motor vehicle are a challenge for the developer with regard to durability. In general, the high specification requirements, the narrow construction space and the cost pressure lead to undersize of the critical components, which can lead to failure of the individual components and thus also of the assembly. In this case, for example, a requirement for the rocking load capacity of the assembly when it is installed on an internal combustion engine of a motor vehicle can be mentioned. The resulting dynamic stresses on the finished product are generally much higher than the permissible load capacity. Missing or insufficient material damping often leads to critical resonance frequencies in the case of shaking loads, which have an excitation that is as high as 20 times higher and thus strongly impair the desired service life of the finished product. The intensity of the transmission of the vibration energy from the vibration exciter to the aggregate depends strongly on the type of connection of the components and the material damping of the components. The rigid fastening of the aggregate to the motor means that the excitation energy is transmitted to the aggregate undamped and the aggregate is therefore subjected to excessive loads. The service life of the assembly is inversely proportional to the load to which it is subjected, wherein the stresses can be decisively minimized by means of damping. For this purpose, holding elements having an elastomer section, such as, for example, an elastomer section made of EPDM (ethylene propylene diene monomer), which is made of a material having high damping properties, are particularly suitable for this purpose, which can absorb and convert vibrational energy into internal friction.

Advantageous refinements and improvements of the individual features result from the measures cited in the dependent claims. The holding device or an advantageous further development of the invention is characterized in that the elastomer section has an inner region for accommodating the assembly. In this way, the vibration excitation of the assembly can be minimized in a particularly advantageous manner. Furthermore, the inner region is preferably substantially rotationally symmetrical with respect to the axial direction and, according to an advantageous development of the invention, completely surrounds the assembly in the circumferential direction. In this way, a particularly simple and loss-proof clamping of the assembly can be provided. Particularly preferably, the elastomer section is configured substantially annularly as an elastomer retainer which forms the retaining element. Such an elastomer holder can be produced particularly simply and has optimum damping properties. In this context, an elastomer holder is to be understood to mean, in particular, a holding element which is composed entirely of an elastic material, in particular an elastomer.

According to an advantageous further development of the invention, it is provided that the heat shield has a shield section which extends substantially in the radial direction. The shielding section preferably substantially covers the housing side of the aggregate at least in some areas. In this way, the assembly is protected in particular from thermal radiation.

In particular, a particularly simple fastening of the heat shield to the elastomer section can be provided by arranging at least one coupling section on the shielding section. In particular, the use of two coupling sections makes it possible to achieve a particularly simple fittable and at the same time stable connection of the heat shield to the elastomer section. For this purpose, the elastomer section preferably has a receiving section which is complementary to the at least one coupling section.

The heat shield can be assembled particularly simply by the receiving section being designed as a receiving opening extending substantially in the axial direction. A corresponding coupling element can be inserted or plugged into such a receiving opening. A particularly stable connection between the heat shield and the elastomer section is provided in particular by the slot-like receiving opening. In this context, a slit-shaped opening is to be understood in particular as an opening which has a width in cross section that is much greater than the height. In particular, the respective coupling element is completely inserted through the through-opening as a design of the through-opening, which results in a particularly stable and easily fittable connection.

The production costs of such a heat shield are particularly advantageous if the shielding section is constructed in one piece with the at least one coupling section. In particular, while the material costs are low, a particularly optimized thermal insulation can be achieved by providing the heat shield with a metallic material or, alternatively or additionally, with a composite material. In particular, a structure made of metal can be produced as a stamped and bent part in a particularly simple and cost-effective manner.

In order to prevent the heat shield from falling out in the opposite direction of assembly, it is provided according to an advantageous development of the invention that the coupling section and, as an alternative or in addition thereto, the receiving section also have a latching mechanism. Such a latching mechanism can be formed in particular by latching hooks, latching bulges or latching projections. Such a locking mechanism preferably has one, two, three or four locking surfaces, by means of which the locking mechanism is arranged in a locking manner on the receiving section and correspondingly additionally or alternatively also on the coupling section. A particularly preferred embodiment of the invention provides that the latching means is designed as a latching hook extending in the radial direction, which is formed in the region of the respective free end of the coupling section. When the heat shield is assembled, the latching hooks are inserted through the receiving openings, so that the latching hooks with their respective latching surfaces are arranged in a latching manner on the end face of the elastomer section. In this way, the heat shield can advantageously be prevented from falling out counter to the assembly direction.

In order to advantageously limit the insertion depth of the heat shield into the receiving section of the elastomer section, it is provided according to an advantageous development of the invention that the coupling section has an axial stop. Preferably, the axial stop is configured as a corresponding axial hook, axial projection or axial projection. Preferably, the stop hook and the latching hook are configured in a uniform manner and are spaced apart from one another in the axial direction.

According to an advantageous further development of the invention, the shielding section is of substantially disk-shaped design, wherein the shielding section has a through-opening for accommodating a fluid inlet of the aggregate. When the heat shield is assembled, the fluid outlet is inserted through the through-opening, so that the heat shield is advantageously arranged particularly close to the unit. By fastening the heat shield to the elastomer section, at the same time vibration excitation of the heat shield is minimized in an advantageous manner, so that despite this space-saving arrangement the heat shield does not strike the nearest component.

In order to also protect the fluid outlet from thermal effects, the shielding element has, according to an advantageous development of the invention, a planar projection which at least partially covers the fluid outlet of the assembly extending substantially in a radial plane. Preferably, the projection is at least partially of shell-shaped, in particular semi-tubular, design. In this way, the fluid outlet may be shielded from thermal radiation from different angles. In order to also shield the assembly from thermal radiation from different angles, according to an advantageous development of the invention, the shield section has a circumferential collar which extends substantially in the direction of the assembly.

In order to fix the holding element on the motor vehicle, the holding element has a fixing section. In this case, according to one embodiment of the invention, the fastening section can be designed as a receiving bore for a corresponding screw connection. However, it is also conceivable for the fastening section to be designed as an insert for the elastomer section. The inserts preferably each have a wing on their opposite side, which extends into the elastomer section. By means of such a wing, the rigidity of the entire holding element can be improved by means of a targeted enlargement or lengthening of the insert in terms of position.

Furthermore, the elongation of the insert by means of such wings improves the anchoring of the insert in the elastomer, so that no large relative movements are possible anymore and therefore no cracks occur in the elastomer material. For fastening to the motor vehicle, the insert preferably has one or more locking elements. These locking elements can preferably be arranged as connecting bolts for receiving corresponding screw connections.

Drawings

Embodiments of the retaining device or heat shield are depicted in the drawings and are explained in detail in the following description. Shown here are:

figure 1 shows a perspective view of a holding device with an aggregate according to a first embodiment,

figure 2 shows a perspective exploded view of the holding device according to figure 1,

fig. 3 shows a perspective view of a further embodiment of a holding element with an assembly.

Detailed Description

In different embodiment variants, identical components are provided with the same reference numerals.

Fig. 1 shows an assembly 10 which can be installed in a construction space, in particular in a motor vehicle, by means of a holding device 12. The assembly 10 may be, in particular, a pump, a cooling circulation pump, an electric motor, a fan or other components mounted on and/or in the motor vehicle. For example, in fig. 1, the assembly 10 is configured as a pump or cooling circulation pump. For the sake of simplicity of illustration, the motor vehicle is not shown in fig. 1.

The holding device 12 has a holding element 14 with a fastening section 16. The fastening section 16 is provided for fastening the holding element 14 to the motor vehicle. As can be seen clearly in fig. 1, the holding element 14 is designed to accommodate the aggregate 10. Fig. 1 shows an exemplary pump 10 driven by means of an electric drive, in particular an electrically commutated electric motor. Pumps of the type described herein typically have an impeller that rotates at a speed of approximately 3750 revolutions per minute. Thus, the pump has a resonant frequency of about 500 Hz. The transmission of the resonant frequency and thus the undesired transmission of sound from the pump to the vehicle interior is via the assembly 10 via the holding element 14 to the fastening section 16 and finally to the vehicle. According to the invention, it is now provided that the holding element 16 has an elastomer section 18. The elastomer section 18 advantageously enables the undesired transmission of sound from the assembly to the interior of the motor vehicle to be minimized for this purpose. In addition to noise minimization, the holding device 12 also has the task of damping and decoupling elements, in order to intercept dynamic loads, such as, for example, shaking loads and vibration loads which may occur during operation of the motor vehicle. In addition, such a holding device 12 advantageously achieves a loss-proof clamping of the aggregate 10.

As can be seen in fig. 1, the pump 10 has a pump housing 20. The pump housing 20 has a fluid inlet 24 and a fluid outlet 26. Fluid is drawn through the first fluid inlet 24 and then continues to be directed through the outlet 26. In this case, a main volume flow of the fluid flows into the fluid chamber of the pump housing 20 in the inflow direction 32 via the fluid inlet 24 and then flows out of the fluid chamber in the outflow direction 34 via the fluid outlet 26. As shown in fig. 1, according to the embodiment of the invention shown here, the inflow direction 32 corresponds substantially to the axial direction 28 of the aggregate. The outflow direction 34 is arranged substantially axially parallel to the respective radial direction 29.

According to the embodiment of the invention shown in fig. 1, the elastomer section 18 is configured substantially annularly as an elastomer holder forming the holding element 14 and surrounds the aggregate 10. As already mentioned, according to one embodiment of the invention, the aggregate 10 is configured as a pump. Such a pump, as shown for example in fig. 1, generally has a cross section in its receiving region for the holding device 12 that is substantially rotationally symmetrical with respect to the axial direction 28. In order to secure the aggregate 10 in the elastomer section 18 of the holding element 14 in a manner that prevents it from being lost, the elastomer section 18 has an inner region 30 with which the substantially annular elastomer section 18 rests on the aggregate. The contour of the inner region 30 of the elastomer section 18 thus matches the contour of the receiving region of the aggregate 10. Thus, according to the embodiment of the invention shown in fig. 1, the inner region 30 is substantially rotationally symmetrical with respect to the axial direction 28.

According to an advantageous embodiment of the invention, as is shown by way of example in fig. 1, this provides an optimum, loss-proof fixing of the aggregate 10 in the retaining element 14, i.e. the diameter of the inner region 30 is dimensioned smaller than the diameter of the aggregate 10 in the respective receiving region. Thus, when the holding element 14 or the elastomer section 18 is assembled, it is pushed down onto the assembly 10 under pretension.

In this way, the radial compression required for the loss-proof clamping can be provided between the elastomer section 18 and the aggregate 10.

During operation of the motor vehicle, thermal energy is generated, which can have an adverse effect on components in the motor vehicle. Due to their high installation space requirements, in particular in the hybrid field, thermally managed components can be arranged very close to hot components, such as, for example, components of an exhaust system. In order to shield the heat of these heat sources from the unit, it is provided according to the invention that a heat shield 40 is fastened to the elastomer section 18 of the holding element 14. Such a heat shield 40 is preferably configured such that it reduces the transfer of thermal energy or heat flow in the direction of the stack 10. In particular, the heat shield 40 may reduce heat transfer by convection and/or heat radiation. Preferably, in such a case, heat transfer from components surrounding the unit 10 to the unit 10 may be reduced to such an extent that the unit 10 is not heated above the critical temperature on a typical time scale. For this purpose, the heat shield 40 is preferably made of metal and, as an alternative or in addition thereto, of a composite material. By fastening the heat shield 40 to the elastomer section 18 of the holding element 14, the transmission of shaking and vibration loads of the motor vehicle to the heat shield 40 can be reduced in an advantageous manner, so that the heat shield 40 can be fastened in a particularly space-saving manner at a small distance from the aggregate 10 itself.

According to the embodiment of the invention shown in fig. 1, the heat shield 40 has a shield section 42 which extends substantially in the radial direction 29. According to the embodiment of the invention shown here, the shielding section 42 is designed as a substantially plate-shaped element and covers the housing side of the aggregate 10, so that the aggregate 10 is correspondingly sufficiently shielded before the transfer of thermal energy.

According to the embodiment of the invention shown in fig. 1, the heat shield 40 is arranged on the housing side of the aggregate 10 assigned to the impeller. As can be seen in fig. 1, the shielding section 42 is of substantially disc-shaped design and extends in a radial plane, in turn preferably substantially parallel to the holding element 14. The shield section 42 has a central through-opening 44. When the heat shield 40 is assembled, the fluid inlet connection 24 is inserted through the through opening 44, so that the heat shield 40 is arranged as close as possible to the pump housing 20.

As can be seen clearly in fig. 1, according to the embodiment of the invention shown here, the heat shield 40 has a planar projection 50 for shielding the fluid outlet 26 extending substantially parallel to the radial direction 29 or in a radial plane, which projection at least partially covers the fluid outlet 26 on the side facing away from the holding element 14. In this case, the projection 50 is embodied in the form of a shell according to the embodiment of the invention shown in fig. 1. In this case, the projection 50 matches the contour of the substantially hollow-cylindrical fluid outlet nipple 26 and has a semi-tubular shape. In this way, the fluid outlet nipple may be shielded from heat radiation from different angles. As can be seen in fig. 1, the projection 50 preferably has a length which substantially corresponds to the length of the fluid outlet 26, so that the fluid outlet nipple 26 is shielded in an advantageous manner over the entire radial extension.

To secure the heat shield 40 to the elastomeric section 14, the heat shield 40 has a coupling section 60. As can be seen in fig. 1, the coupling section 60 extends substantially in the axial direction 28. To secure the heat shield 40 to the elastomeric section 18, the elastomeric section 18 has a corresponding receiving section 70 that is complementary to the coupling section 60. According to the embodiment of the invention shown in fig. 1, the receiving section 70 is designed as a slot-like receiving opening 72 extending in the axial direction. When the heat shield 40 is assembled, the coupling section 60 is inserted through the receiving opening 72, so that the coupling section 60 extends completely through the elastomer section 18 in the axial direction 28. The heat shield 40 shown in fig. 1 is designed as a one-piece sheet metal part, in particular as a stamped and bent part. The design and fixing of the heat shield 40 on the elastomer section 18 is illustrated in detail in fig. 2.

Fig. 2 shows the holding device according to fig. 1 in a partially exploded view before the insertion of the heat shield 40 into the holding element 14. As can be seen clearly in fig. 2, the heat shield 40 has a substantially flat shield section 42 which extends in the radial direction 29. The shielding section 42 has a central through-opening 44, preferably coaxial to the inflow direction 32. Furthermore, the diameter of the through opening 44 is dimensioned such that the fluid inlet 24 can be completely inserted through the through opening 44. As can be seen clearly in fig. 2, a flat projection 50 is formed on the shielding section 42 to shield the fluid outlet 26. In this case, the planar projection 50 extends substantially in the plane of the shielding section 42 and is of substantially shell-shaped design, so that it covers the fluid outlet 26 at least partially also in the axial direction 28.

According to the embodiment of the invention shown in fig. 2, the heat shield 40 has two coupling sections 60, which coupling sections 60 are arranged on the outer edge of the shielding section 42 and extend substantially in the axial direction 28. According to the embodiment of the invention shown in fig. 2, the coupling section 60 is designed as a tab-like element.

In order to shield thermal radiation not only from the axial direction but also at a specific angle relative to the aggregate 10, the substantially disk-shaped shielding section 42 has a circumferential flange 66 at its radially outer edge. The circumferential collar 66 extends at least partially in the axial direction, so that the shield portion 42 has a pot-shaped or pot-shaped contour. According to the embodiment of the invention shown in fig. 2, the shielding section 42 is formed in one piece with its circumferential flange 66, wherein the transition between the disk-shaped section extending substantially in the radial direction 29 and the section of the circumferential flange 66 extending in the axial direction 28 is formed as a circular arc-shaped curvature.

As can be seen in fig. 2, the heat shield 40 according to fig. 2 has two coupling sections 60. The coupling section or the planar coupling web 60 is arranged on opposite sides of the shielding section 42 on the circumferential collar 66. However, it is explicitly mentioned here that the number and arrangement of the coupling sections 60 can be adapted to the respective existing boundary conditions. When assembled, the coupling segment 60 is inserted into the corresponding receiving opening 72 of the elastomeric segment 18. As can be seen clearly in fig. 2, the receiving opening extends in the axial direction 28 as a substantially rectangular, slot-like through-opening corresponding to the shape of the coupling section 60. In order to form these receiving gaps 72, according to the embodiment of the invention shown in fig. 2, the elastomer section 18 has projections extending in the radial direction, so that the receiving gaps are surrounded on the circumferential side by elastomer material having a wall thickness sufficient for stability.

According to the embodiment of the invention shown in fig. 2, the coupling sections 60 each have a latching means 62, wherein the latching means 62 are designed as latching hooks or latching ridges extending in the radial direction 29, which are formed in the region of the respective free end of the coupling sections 60. According to the embodiment of the invention shown in fig. 2, a latching hook 62 is arranged on each lateral edge of the coupling section 60. Preferably, the two snap hooks 62 are located on the axial height of the coupling section 60. When the heat shield 40 is assembled, the latching hooks 62 are inserted through the receiving openings 72, so that the latching hooks with their respective latching surfaces are arranged in a latching manner on the end face of the elastomer section 18. In this way, the heat shield 40 can advantageously be prevented from falling out against the installation direction. In addition to the arrangement of the latching hook 62 on the coupling section 60 shown in fig. 2, it is also conceivable for the latching mechanism 62 to be arranged on the receiving section 70. For example, it is also conceivable to form corresponding latching projections in the receiving slot, which cooperate with the coupling section 60 in such a way that a loosening of the inserted heat shield 40 against the mounting direction can be prevented.

As can be seen in fig. 2, the coupling elements 60 each have an axial stop 64 in addition to the latching elevations 62. According to the embodiment of the invention shown in fig. 2, the axial stop 64 is configured as a stop hook or stop bead, which likewise projects in the radial direction beyond the contour of the coupling element 60. According to the embodiment of the invention shown in fig. 2, a stop hook 64 is arranged on each lateral edge of the coupling section 60. Preferably, two stop hooks 64 are located at the axial height of the coupling section 60. The stop hook 64 and the coupling hook 64 are preferably configured in a uniform manner, in particular congruent. When the coupling section 60 is inserted into the receiving opening 72, the stop element 64 defines an insertion depth due to its interaction with the end face of the elastomer section 18 facing the shielding section 42. The stop element 64 and the latching mechanism 62 preferably have an axial distance 68 which substantially corresponds to an axial height 69 of the elastomer section 18 in the region of the receiving opening 72. In this way, the position of the respective coupling section 60 relative to the retaining element 14 is clearly defined.

According to the embodiment of the invention shown in fig. 2, the elastomer section 18 is designed as an essentially annular elastomer retainer which forms a retaining element. For fastening the holding element 14 to a motor vehicle (not shown here), the holding element has a fastening section 18. According to the embodiment of the invention shown in fig. 2, the fastening section 18 is designed as a receiving bore for receiving a screw connection. However, other fastening forms and corresponding fastening sections 16 are also conceivable. Fig. 3 shows a further embodiment of such a fastening section 16.

Fig. 3 shows the respective assembly 10 from the side of the assembly facing away from the impeller, so that the fluid inlet 24 is covered due to the selected perspective. The holding element shown in fig. 3 likewise has an elastomer section 18 with an annular inner region 30 which surrounds the assembly 10 over the entire circumference. In order to fix the holding element 14 on the motor vehicle, the holding element 14 has a fixing section 16 which is designed as an insert 80 for the annular elastomer section 18.

According to the embodiment of the invention shown in fig. 3, the insert 80 has wings 81 on two opposite edges, each of which enters into the elastomer section 18. By means of such a wing 81, the rigidity of the holding element 14 can be improved by means of a targeted enlargement or lengthening of the insert 80 in terms of position. Furthermore, the elongation of the insert 80 by means of such wings 81 improves the anchoring of the insert 80 in the elastomer, so that no large relative movements can be achieved anymore and no cracks occur in the elastomer material. Fig. 3 shows an embodiment according to the invention in which the wings 81 are arranged approximately centrally according to the invention on the edges, in particular on the longitudinal sides, of the insert 80, so that the wings 81 are embedded as centrally as possible in the elastomer material and can also be deformed slightly in the elastomer during the assembly process, if necessary. The insert 18 is preferably surrounded by the elastomer material forming the elastomer section 18 by vulcanization. As can be seen in fig. 3, the insert 80 has two connecting bolts 82, which are provided for producing a corresponding threaded connection with the motor vehicle. The elastomer section 18 of the holding element 14 according to fig. 3 also has two receiving sections 70, which are configured as slot-like receiving openings extending substantially in the axial direction 28. In the assembled state, the corresponding coupling section 60 of the heat shield 40 can be inserted into this receiving opening 72.