Motor-pump unit for use in motor vehicle

Abstract

The invention relates to a motor-pump unit (2) for use in a motor vehicle. The motor-pump unit comprises a hydraulic pump (4) for generating hydraulic pressure for driving the hydraulic system, a support tube (6) for mounting the motor-pump unit (2) inside the motor vehicle, and at least one cage (8) for fastening the motor-pump unit (2) to an axle bracket (80) of the motor vehicle, wherein the cage (8) is arranged at an end of the hydraulic pump (4).

Description

Technical Field

[0001] The invention relates to a motor-pump unit / electric pump unit for use in a motor vehicle and an axle carrier having such a motor-pump unit. The invention also relates to a motor vehicle having such a motor-pump unit or such an axle carrier. Background Art

[0002] Motor-pump units for use in motor vehicles are known in the prior art. Motor-pump units are generally used to generate hydraulic energy and use it for various applications in the vehicle. Conventional motor-pump units comprise, in particular, a hydraulic pump which is mounted or fastened via a support element in the motor vehicle, for example on an axle carrier of the motor vehicle.

[0003] A disadvantage is that it is difficult to fasten or install the motor-pump unit in the interior of a motor vehicle, since only limited installation space is available and reliable fastening is essential for safety reasons. Furthermore, correct alignment of the motor-pump unit during fastening has proven to be complicated. Summary of the invention

[0004] The object of the present invention is therefore to at least partially remedy the above-mentioned disadvantages and, in particular, to provide a motor-pump unit for use in a motor vehicle which can be manufactured in a simple and inexpensive manner and can be fastened in a motor vehicle in a simple, inexpensive and at the same time reliable manner.

[0005] The above-mentioned problem is solved by a motor-pump unit having the features of claim 1, an axle carrier according to claim 9 and a motor vehicle according to claim 10. Further features and details are given in the dependent claims, the description and the drawings. The technical features disclosed for the motor-pump unit according to the invention also apply to the axle carrier according to the invention or the motor vehicle according to the invention and vice versa, so that the disclosure of the various aspects of the invention always refers to or can refer to one another. Advantageous configurations of the invention are given in the dependent claims.

[0006] According to the present invention, a motor-pump unit for use in a motor vehicle is provided. The motor-pump unit according to the present invention comprises a hydraulic pump for generating hydraulic pressure for driving a hydraulic system, a support pipe for mounting the motor-pump unit in a motor vehicle, and at least one retaining bracket for fastening the motor-pump unit to an axle bracket of the motor vehicle, wherein the retaining bracket is arranged at the end of the hydraulic pump.

[0007] Therefore, according to the invention, a motor-pump unit for use in a motor vehicle is provided, wherein, by means of the arrangement of a support tube for mounting the motor-pump unit in the motor vehicle and by means of the arrangement of at least one retaining bracket arranged at the end of the hydraulic pump for fastening the motor-pump unit to an axle carrier of the motor vehicle, a simple and inexpensive production of the motor-pump unit and a simple, inexpensive and at the same time reliable fastening of the motor-pump unit in the motor vehicle are ensured.

[0008] The motor-pump unit in question can preferably be used in a motor vehicle, such as a bus or a truck. However, use in other vehicles, such as commercial vehicles, ships or aircraft, is also conceivable.

[0009] In order to simply and reliably fasten the motor-pump unit in a motor vehicle, it can be advantageously provided according to the invention that at least one retaining bracket has a spectacle-shaped design, wherein the retaining bracket preferably has a first circular retaining element and a second circular retaining element and a retaining base arranged between the first circular retaining element and the second circular retaining element.

[0010] In order to effectively reduce vibrations and shocks generated by the operation of the electric motor and other components of the motor-pump unit, it can be advantageously provided according to the invention that at least one holder has a decoupling element for decoupling the vibrations. For example, the decoupling element can be designed as a bearing (preferably a rubber bearing), a spring element, a damping material or a hydraulic damping element, etc.

[0011] With regard to a particularly compact arrangement of the motor-pump unit according to the invention in a motor vehicle, it is particularly advantageous if at least one cage is integrated into the hydraulic pump, preferably arranged at least partially in a cover of the hydraulic pump.

[0012] In the case of a particularly compact arrangement of the motor-pump unit according to the invention in a motor vehicle, it is particularly advantageous to provide a tie rod for fastening the support tube to the hydraulic pump. By fastening the support tube via the tie rod, the support tube can also be fastened to the hydraulic pump in a structurally simple and reliable manner, so that there is no need to use an overhanging flange geometry for fastening.

[0013] In order to ensure a particularly flexible arrangement of the motor-pump unit in a motor vehicle, it can also be specifically proposed that a first holder and a second holder are provided, wherein the first holder is preferably integrated into the hydraulic pump and the second holder is arranged at the end of the support tube, wherein the second holder is designed so that its position can be changed in particular via the support tube. In this arrangement, the distance between the holders can therefore be adjusted, for example, by changing the length of the support tube. Any angular position of the holders relative to one another can be achieved by any rotational positioning of the holders on the support tube before tightening. In the present case, this preferably enables simple adaptation to the various packaging requirements of various axle assemblies in which the motor-pump unit in question can be installed.

[0014] With regard to the simple, convenient and flexible arrangement of the motor-pump unit on the axle carrier of a motor vehicle, it can be advantageously provided according to the invention that a shaped part is provided which is arranged at the end of the support tube, wherein the shaped part is preferably designed in the form of a support pin for insertion into a rubber bearing on the side of the axle carrier. In this way, a simple 3-point mounting can be constructed. Of course, instead of arranging the motor-pump unit in the axle carrier, the arrangement can be provided in another holder. This arrangement also ensures a lower installation space requirement and a lower weight, since the motor-pump unit can be mounted directly in the axle assembly using only rubber bearings (if necessary, without an additional holder). In addition, when two holders are arranged, no rotational positioning of the holders relative to each other is required.

[0015] In order to achieve an axially fixed / axle-fixed, stable and space-saving cable fixation on the motor-pump unit, it can be advantageously provided that at least one cable fixing element is provided for fastening the cable, wherein the cable fixing element is preferably arranged in the first circular holding element or the second circular holding element, in particular fixed in the first circular holding element or the second circular holding element via a bearing bushing with an internal thread. The cable fixing can preferably be in the form of a clamp connection, for example, which grips / clamps the bearing bushing. This arrangement also does not require modifications to the pump cover (such as a protruding cast contour) and reliably prevents the cable from vibrating.

[0016] Another object of the invention is an axle carrier for use in a motor vehicle, the axle carrier having a motor-pump unit as described above, wherein the motor-pump unit is fastened to the axle carrier via at least one retaining bracket, preferably via a first retaining bracket and a second retaining bracket. The axle carrier according to the invention thus has the same advantages as those already described in detail with respect to the motor-pump unit according to the invention. Preferably, the motor-pump unit is mounted on the axle carrier in such a way that one or more retaining brackets, mating retaining brackets integrated into the side of the axle carrier, are respectively surrounded / clamped from the outside. One or more retaining brackets can be bolted to the axle carrier from the outside, for example via a sleeve in the decoupling element.

[0017] Another object of the invention is a motor vehicle comprising a motor-pump unit as described above, preferably comprising an axle carrier as described above. The motor vehicle according to the invention thus has the same advantages as those already described in detail with respect to the motor-pump unit or axle carrier according to the invention.

[0018] Further advantages, features and details of the invention emerge from the following description, in which exemplary embodiments of the invention are described in detail with reference to the attached drawings.The features mentioned in the claims and in the description may be essential to the invention either individually or in any combination. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings schematically show:

[0020] Figure 1 is a first view of a motor-pump unit according to the invention for use in a motor vehicle according to a first exemplary embodiment,

[0021] Figure 2 Yes Figure 1 A second enlarged view of the motor-pump unit according to the invention is shown,

[0022] Figure 3 Yes Figure 1 A third view of a motor-pump unit according to the invention is shown,

[0023] Figure 4 are three different views (left, center, right) of an axle carrier according to the invention with a motor-pump unit for use in a motor vehicle,

[0024] Figure 5 is a first view of a motor-pump unit according to the invention for use in a motor vehicle according to a second exemplary embodiment,

[0025] Figure 6are enlarged views of a portion of a motor-pump unit according to the invention showing the case where the cable is not fixed by a cable fixing element (upper figure) and the cable is fixed via a cable fixing element (lower figure). DETAILED DESCRIPTION

[0026] Figure 1 A motor-pump unit 2 according to the invention for use in a motor vehicle is shown in a first view according to a first exemplary embodiment.

[0027] like Figure 1 As can be seen, the motor-pump unit 2 includes a hydraulic pump 4 for generating hydraulic pressure for driving the hydraulic system, a support tube 6 for mounting the motor-pump unit 2 in a motor vehicle, and a first retaining frame 8 and a second retaining frame 8 for fastening the motor-pump unit 2 to an axle bracket 80 of the motor vehicle, wherein the first retaining frame 8 is arranged at the end of the hydraulic pump 4 and the second retaining frame 8 is arranged at the end of the support tube 6.

[0028] The holder 8 is eyeglass-shaped, and has a first circular holding element 8 a and a second circular holding element 8 b , and a holding base 8 c arranged between the first circular holding element 8 a and the second circular holding element 8 b .

[0029] The cage 8 preferably has a decoupling element for decoupling vibrations.

[0030] As can be seen in the figure, the right-hand retaining bracket 8 is at least partially arranged in the cover 4 a of the hydraulic pump 4 .

[0031] Figure 2 The second enlarged view shows Figure 1 A motor-pump unit 2 according to the invention is shown.

[0032] like Figure 2 As can be seen in FIG. 4 , the motor-pump unit 2 has a tie rod 10 for fastening the support tube 6 to the hydraulic pump 4 .

[0033] Figure 3 It shows that Figure 1 A third view of a motor-pump unit 2 according to the invention is shown.

[0034] like Figure 3 As can be seen in the view of , the first holder 8 is integrated into the hydraulic pump 4, the second holder 8 is arranged at the end of the support tube 6 and is designed to be able to change its position via the support tube 6, which in particular makes it possible to simplify the alignment of the motor-pump unit 2 in the motor vehicle.

[0035] Figure 4 An axle carrier 80 according to the invention with a motor-pump unit 2 for use in a motor vehicle is shown in three different views (left, center, right).

[0036] like Figure 4 It can be seen that the motor-pump unit 2 is fastened to the axle carrier 80 via at least one holder 8 , in this case via bearing bushings 18 , which are inserted into first and second circular retaining elements 8 a , 8 b and fixed in place via screws 20 .

[0037] Figure 5 A motor-pump unit 2 according to the invention for use in a motor vehicle is shown in a first view according to a second exemplary embodiment.

[0038] As from Figure 5 It can be seen that according to the second exemplary embodiment of the motor-pump unit 2 of the present invention, a formed part 12 is provided, which is arranged at the end of the support tube 6, wherein the formed part 12 is designed in the form of a support pin for insertion into the rubber support 22 on the side of the axle bracket 80.

[0039] Figure 6 An enlarged view of a portion of a motor-pump unit 2 according to the invention showing the case where the cable 16 is not fixed via the cable fixing element 14 (upper figure) and where the cable 16 is fixed via the cable fixing element 14 (lower figure).

[0040] like Figure 6 As can be seen in FIG. 1 , the cable fixing element 14 is arranged in the first round retaining element 8 a or the second round retaining element 8 b and is fixed in the first round retaining element 8 a and the second round retaining element 8 b via a bearing bushing 18 having an internal thread.

[0041] The above explanation of the embodiments describes the invention only in the context of examples. Of course, the individual features of the embodiments can be freely combined with one another within the technically advantageous range without departing from the scope of the present invention.

Claims

1. A motor-pump unit (2) for use in a motor vehicle, the motor-pump unit comprising: - a hydraulic pump (4) for generating hydraulic pressure to drive a hydraulic system, a support tube (6) for mounting the motor-pump unit (2) inside the motor vehicle, - at least one retaining bracket (8) for fastening the motor-pump unit (2) to an axle bracket (80) of the motor vehicle, - wherein the retaining bracket (8) is arranged at the end of the hydraulic pump (4).

2. The motor-pump unit (2) according to claim 1, characterized in that The at least one holder (8) has a spectacle-shaped design, wherein the holder (8) preferably has a first circular holding element (8a) and a second circular holding element (8b) and a holding base (8c) arranged between the first circular holding element (8a) and the second circular holding element (8b).

3. The motor-pump unit (2) according to claim 1 or 2, characterized in that The at least one holder (8) has a decoupling element for decoupling vibrations.

4. The motor-pump unit (2) according to one of the preceding claims, characterized in that The at least one cage (8) is integrated into the hydraulic pump (4), preferably at least partially arranged in a cover (4a) of the hydraulic pump (4).

5. The motor-pump unit (2) according to one of the preceding claims, characterized in that A tie rod (10) is provided for fastening the support tube (6) to the hydraulic pump (4).

6. The motor-pump unit (2) according to one of the preceding claims, characterized in that A first cage (8) and a second cage (8) are provided, wherein the first cage (8) is preferably integrated into the hydraulic pump (4), and the second cage (8) is arranged at the end of the support tube (6), wherein the second cage (8) is designed such that its position can be changed, in particular via the support tube (6).

7. The motor-pump unit (2) according to one of the preceding claims, characterized in that A shaped part (12) is provided which is arranged at the end of the support tube (6), wherein the shaped part (12) is preferably designed in the form of a support pin for insertion into a rubber support (22) on the side of an axle carrier (80).

8. The motor-pump unit (2) according to one of the preceding claims, characterized in that At least one cable fixing element (14) is provided for fastening a cable (16), wherein the cable fixing element (14) is preferably arranged in the first circular retaining element (8a) or the second circular retaining element (8b), in particular fixed in the first circular retaining element (8a) or the second circular retaining element (8b) via a bearing bushing (18) having an internal thread.

9. An axle carrier (80) for use in a motor vehicle, comprising a motor-pump unit (2) according to one of the preceding claims, wherein the motor-pump unit (2) is fastened to the axle carrier (80) via at least one retaining bracket (8), preferably via a first retaining bracket (8) and a second retaining bracket (8).

10. A motor vehicle (100) comprising a motor-pump unit (2) according to any one of claims 1 to 8.

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