EP3762607B1 - Pump apparatus for a system housing in a vehicle - Google Patents

Description

The invention relates to a pump device for a system housing of a vehicle.

State of the art

Pumps suitable for pumping liquids for vehicles/motor vehicles are known from the prior art. Such conventional pumps are described, for example, in the publication "Regular electric oil pumps" by FTE automotive (FTE automotive GmbH, Andreas-Humann-Str. 2, D-96106 Ebern).

Additionally describes the DE 197 42 611 A1 a piston pump with a motor-driven pumping device, a pump housing and a suction filter which is arranged either in the pump housing or in a filter housing mechanically fastened to the pump housing.

Furthermore, an electric motor-driven liquid pump in the EP 3 179 106 A1 disclosed.

Disclosure of Invention

The invention creates a pump device for a system housing of a vehicle with the features of claim 1.

Advantages of the Invention

The present invention provides pump devices which are easier and quicker to assemble and disassemble compared to the prior art. While in the prior art with a Conventional pump interacting suction filter must be installed adjacent to the interacting pump by means of additional work, in a pump device according to the invention the respective suction filter (already integrated into the pump device according to the invention) is automatically installed when the pump device is installed. Correspondingly, the respective suction filter is also automatically dismantled when the pump device according to the invention is dismantled. This significantly reduces the amount of work to be done when assembling and disassembling a pump device according to the invention together with its suction filter. It is also pointed out that the suction filter cooperating with a pump device according to the invention can be exchanged with a relatively small amount of work. A further advantage of the present invention is that only the respective pump receiving opening is required to mount a pump device according to the invention with its interacting suction filter in a system housing of a vehicle/motor vehicle. The use of the pump device according to the invention thus also reduces the amount of work involved in producing the respective system housing.

In addition, the pump device is additionally designed with at least one closure cover, by means of which the pump receiving opening of the system housing can be sealed in a liquid-tight manner in relation to an adjacent external environment of the system housing, and the electric motor arranged between an inside of the closure cover and the pump device, which is either in the pump housing or in a is arranged mechanically attached to the pump housing motor housing. The closure cap, which can also be described as a cover plate, can thus be used both for assembly/adjustment of the pump device in the pump receiving opening and for liquid-tight sealing of the pump receiving opening. Another advantage of the embodiment of the pump device described here is its good noise behavior, since all moving / moving parts of the electric motor and the Pump device are within the pump housing and / or the motor housing.

Preferably, the pump device is additionally designed with at least one electronic control system arranged on an outside of the closure cover, and at least one contact part guided through the closure cover, via which the electric motor is connected to the control electronics in such a way that the electric motor can be controlled by means of the control electronics. The control electronics are thus reliably protected against the ingress of liquids into the control electronics by means of the closure cover after the pump device has been installed.

In an advantageous embodiment of the pump device, the suction filter is arranged in the filter housing, with the filter housing being fastened to the pump housing by means of a snap connection. It is therefore possible to replace the suction filter arranged in the filter housing by simply opening the snap connection.

In an advantageous further development of the pump device, the suction filter is arranged in a suction pipe formed in the pump housing or in the filter housing, through which the liquid pumped by means of the driven pump device can be sucked. The pump device can thus have a comparatively compact design.

A suction projection is preferably formed on an end of the suction pipe pointing away from the pump device, with a central longitudinal axis of the suction projection running centrally through the suction projection being inclined to a central longitudinal axis of the suction pipe running centrally through the suction pipe such that the suction projection fits into a hole in the pump receiving opening of the System housing opening liquid or oil sump is at least partially submersible. The liquid pumped by means of the pump device can thus be pumped into the liquid or oil sump at least partially submerged suction projection are sucked into the pump device. A leakage of liquid from the liquid or oil sump into the pump receiving opening is therefore hardly to be feared.

In a further advantageous development, the pump device comprises a pressure connection pipe, which is designed as part of the pump housing, as part of the filter housing or as a separate component attached to the pump housing and/or to the filter housing and through which the liquid pumped by means of the driven pump device can be conveyed. The pressure connection pipe can be immersed at least partially in a pressure connection bore opening into the pump receiving opening. This also contributes to preventing the pump receiving opening from being undesirably wetted/smeared by the liquid pumped by means of the pump device.

A liquid outlet opening of the pressure connection pipe is preferably set back in relation to the suction projection of the suction pipe. As will be explained further below, when this embodiment of the pump device is assembled, before the pressure connection pipe is at least partially immersed in the pressure connection bore, this allows the pump device to be slightly tilted about an axis of rotation aligned perpendicularly to the central longitudinal axis of the suction pipe, as a result of which the suction projection is at least partly immersed in the liquid or oil sump is submersible.

For example, the pump device can be an oil pump, a cooling oil pump and/or a lubricating oil pump. However, it is pointed out that the exemplary embodiments for the pump device listed here are only to be interpreted as examples. The pump device can also be designed for other uses in a vehicle/motor vehicle.

Brief description of the drawings

Fig. 1a bis 1d

schematische Darstellungen einer ersten Ausführungsform der Pumpenvorrichtung;

Fig. 2

eine schematische Darstellung einer zweiten Ausführungsform der Pumpenvorrichtung;

Fig. 3

eine schematische Darstellung einer dritten Ausführungsform der Pumpenvorrichtung; und

Fig. 4

ein Flussdiagramm zum Erläutern eines Herstellungsverfahrens für eine Pumpenvorrichtung für ein Systemgehäuse eines Fahrzeugs, welches nicht unter die vorliegende Erfindung fällt.

Further features and advantages of the present invention are explained below with reference to the figures. Show it:

Figures 1a to 1d

schematic representations of a first embodiment of the pump device;

2

a schematic representation of a second embodiment of the pump device;

3

a schematic representation of a third embodiment of the pump device; and

4

a flowchart for explaining a manufacturing method for a pump device for a system housing of a vehicle, which does not fall under the present invention.

Embodiments of the invention

Figures 1a to 1d show schematic representations of a first embodiment of the pump device.

In the Figures 1a to 1d The pump device shown schematically is designed for pumping a liquid which is conducted through at least one line of a system housing 10 of a vehicle/motor vehicle. In the embodiment described here is in the Figures 1b to 1d Partially shown system housing 10 is an example of an electric drive axle of the vehicle/motor vehicle, the pump device being used as an oil pump/lubricating oil pump, in particular for pumping oil/lubricating oil. However, it is pointed out that this intended use of the pump device is only to be interpreted as an example. The pump device can also be used in another type of system housing of a vehicle/vehicle. Likewise, the pump device described below can also be used advantageously as a cooling oil pump (ie for pumping cooling oil).

The pump device has at least one arranged in a pump housing 12 (in Fig. 1b schematically shown) pump device 12a. The pump device 12a can be driven by means of a motor M (either internal to the pump device or external). In addition, at least the pump housing 12 of the pump device can be introduced into a pump receiving opening 14 of the system housing 10 in such a way that the liquid conducted through the at least one line formed in the system housing 10 can be/is pumped by means of the pump device 12a driven by the motor M. Fig. 1b and 1c show a cross section through the system housing 10 and an external view of the system housing 10 after the pump device has been installed and/or in the system housing 10 in such a way that reliable pumping/conveying operation is possible using the pump device in its operating position/active position.

The pumping device also has a (in Fig. 1b shown schematically) suction filter (oil suction filter) 16a, which is either in the pump housing 12 or is arranged in a mechanically attached to the pump housing 12 filter housing (suction filter housing) 16. In the case of the pump device, the pump device 12a and the suction filter 16a are thus integrated together into an assembly that can be assembled, disassembled and replaced. This simplifies assembly, disassembly and replacement of the pump device that requires the suction filter 16a for its operation and offers advantageous service options, since work steps conventionally required for assembling/disassembling only the suction filter 16a ("as a separate component") can be omitted. A further advantage of the joint integration of the pump device 12a and the suction filter 16a in the pump device is that only the pump receiving opening 14 is required for the assembly of the pump device 12a and the suction filter 16a. In this way, a conventional amount of work for forming a special "suction filter receiving opening" for the suction filter 16a (conventionally mounted as a "separate component") on the system housing 10 can also be dispensed with.

In the embodiment described here, the suction filter 16a is arranged in the filter housing 16 . In an alternative embodiment, however, the suction filter 16a can also be integrated into the pump housing 12 (together with the pump device 12a). As in Fig. 1a As can be seen, the filter housing 16 can be fastened to the pump housing 12 by means of a snap connection 18 . This makes it easier to attach the filter housing 16 to the pump housing 12 and possibly later detach the filter housing 16 from the pump housing 12. However, a connection type other than the snap connection can also be used to effect a (possibly reversible) mechanical attachment of the filter housing 16 to the pump housing 12 18 to be used.

An example is the pump device Figures 1a to 1d equipped with the (pump device's own) electric motor M, which is arranged either in the pump housing 12 or in a motor housing 20 mechanically fastened to the pump housing 12 . As an alternative, however, the pump device can also be designed in such a way that the pump device 12a arranged in the pump housing 12 can be/is driven by means of an external motor.

In the embodiment described here, the pump device also includes a closure cover 22. The closure cover 22 is designed in such a way that the pump receiving opening 14 (after the pump device has been installed in its operating position/active position) can be sealed in a liquid-tight manner by means of the closure cover 22 in relation to an adjacent external environment of the system housing 10 / is sealed, with an inner side of the closure cover during the sealing of the pump receiving opening 14 by means of the closure cover 22 to the pump receiving opening 14 is aligned and an outer side of the closure cover 22 during the sealing of the pump receiving opening 14 by means of the closure cover 22 away from the pump receiving opening 14.

The electric motor M/the motor housing 20 is advantageously arranged between the inside of the closure cover 22 and the pump device 12a. (The closure cap 22 can in particular be part of the motor housing 20 .) For example, the pump housing 12 and the motor housing 20 can be screwed tightly to the inside of the closure cap 22 by means of at least one screw 24 .

As an advantageous development, the pump device also includes control electronics 26 arranged on the outside of closure cover 22. The electric motor M is connected to the control electronics 26 via at least one contact part 28 guided through the closure cover 22 in such a way that the electric motor M can be controlled by means of the control electronics 26 is/is controlled. The control electronics 26 can thus easily be arranged in a liquid-protected position outside of the pump receiving opening 14 sealed by means of the closure cover 22 without this influencing/interfering with operation of the electric motor M controlled by means of the control electronics 26 . The at least one contact part 28 running through the closure cover 22 can be at least one plug part 28, for example.

Fig. 1d shows an assembly of the pump device (in its operating position / active position) schematically. Can be seen in Fig. 1d , that the Cap 22 can be screwed to the system housing 10 by means of at least one external screw 30 in such a way that the pump receiving opening 14 of the system housing 10 is sealed in a liquid-tight manner. The pump device can be dismantled correspondingly easily by means of a simple "unscrewing" that can be carried out.

The suction filter 16a is advantageously arranged in a suction pipe 32 formed in the pump housing 12 or in the filter housing 16 . In the embodiment described here, the suction tube 32 is part of the filter housing 16, with an arrow 32a showing a suction direction of the liquid sucked in through the suction tube 32 (when pumping liquid by means of the pump device 12a). A central longitudinal axis 34 of the suction pipe can be defined for the suction pipe 32 , which runs parallel to a central longitudinal axis (not sketched) of the pump receiving bore 14 , for example after the pump device has been assembled in its operating position/active position. The integration of the suction filter 16a into the pump device is thus possible while maintaining a design that facilitates assembly/disassembly of the pump device.

In the example of Figures 1a to 1d a suction projection 36 is formed on an end of the suction pipe 32 pointing away from the pump device 12a, with a suction projection central longitudinal axis 38 running centrally through the suction projection 36 being aligned inclined to the central longitudinal axis 34 of the suction pipe running centrally through the suction pipe 32. The suction projection 36 can thus be at least partially immersed in a liquid or oil sump 40 opening into the pump receiving opening 14 of the system housing 10 . The liquid pumped by means of the pump device 12a can thus be sucked into the pump device directly from the liquid or oil sump 40 (and before the pump receiving opening 14 is wetted with the liquid).

As an advantageous development, the pump device of Figures 1a to 1d also a pressure connection pipe 42 through which the liquid pumped by means of the driven pump device 12a (away from the pump device 12a) can be/is delivered. The pressure connection pipe 42 of the pump device in FIG Figures 1a to 1d part of Filter housing 16, wherein an arrow 42a indicates a conveying direction of the (when pumping liquid by means of the pump device 12a) through the pressure connection pipe 42 pressed/conveyed liquid. In particular, a pressure connection pipe central longitudinal axis 44 can be defined for the pressure connection pipe 42, which runs parallel to the suction pipe central longitudinal axis 34 of the suction pipe 32 and/or after the assembly of the pump device in its operating position/active position parallel to the (not sketched) central longitudinal axis of the pump receiving bore 14 .

A liquid outlet opening 46 of the pressure connection pipe 42 is preferably set back in relation to the suction projection 36 of the suction pipe 32 . This means that the suction projection 36 of the suction pipe 32, after the pump device has been installed in its operating position/active position, projects further into the pump receiving opening 14 than the liquid outlet opening 46 of the pressure connection pipe 42. The "shortening" of the pressure connection pipe 42 compared to the suction pipe 32 allows space for executing a tilting movement/rotational movement of the pump device introduced into the pump receiving opening 14 about an axis running perpendicularly to the central longitudinal axis of the pump receiving bore 14 . This facilitates at least partial immersion of the suction projection 36 of the suction pipe 32 in the liquid or oil sump 40. Only after this "immersion movement" can the liquid outlet opening 46 of the pressure connection pipe 42 be inserted into a contact hole/pressure oil connection hole 47 that opens into the pump receiving opening 14, so that the liquid pumped by means of the pump device 12a (before the pump receiving opening 14 is wetted with the liquid) is pressed/conveyed into the contact bore 47. The contact hole 47 can be formed perpendicularly to the central longitudinal axis of the pump receiving hole 14 at least at its end section opening into the pump receiving hole 14 , which makes it easier to insert the liquid outlet opening 46 of the pressure connection pipe 42 into the contact hole 47 . In addition, at least one sealing ring 48 (or a "sealing ring structure") can be arranged or formed on the outside of the pressure connection pipe 42 adjacent to the liquid outlet opening 46 .

2 shows a schematic representation of a second embodiment of the pump device.

In the 2 The pump device shown schematically differs from the embodiment described above only in that the suction pipe 50 is designed as a "separate" component 50 fastened to the pump housing 12 and/or to the filter housing 16 . Regarding the other features of the pump device 2 reference is made to the previously described embodiment.

3 shows a schematic representation of a third embodiment of the pump device.

As in 3 can be seen, the suction pipe 52 can also be part of the pump housing 12 . Regarding the other features of the pump device 3 will on the embodiment of 1 referred.

4 FIG. 12 shows a flow chart for explaining a manufacturing method for a pump device for a system housing of a vehicle, which does not fall under the present invention.

All of the pump device embodiments described above can be manufactured by means of the manufacturing method described below. However, feasibility of the manufacturing method is not limited to these pump devices only.

In a method step S1, a pump device, which is arranged in a pump housing, is formed. The pump device and the pump housing are designed in such a way that after introducing at least the pump housing of the pump device into a pump receiving opening of the system housing, the pump device can be Pump device's own or external motor can be driven in such a way that a through at least one in the system housing trained line conducted liquid is pumped by means of the motor-driven pump means.

In addition, in a method step S2, the pump device is equipped with a suction filter, which is arranged either in the pump housing or in a filter housing mechanically fastened to the pump housing. The method steps S1 and S2 can be carried out in any order, simultaneously and/or overlapping in time. The features of the above-described embodiments of pump devices can also be implemented by means of a development of the manufacturing method described here.

Claims (8)

1. Pump apparatus for a systems housing (10) of a vehicle, having a pump installation (12a) which is disposed in a pump housing (12) and is able to be driven by means of a motor (M), the latter being dedicated to the pump apparatus or being external, wherein at least the pump housing (12) of the pump apparatus is able to be incorporated in a pump receptacle opening (14) of the systems housing (10) in such a manner that a liquid directed through at least one line configured in the systems housing (10) is able to be pumped by means of the pump installation (12a) driven by the motor (M); characterized by a suction filter (16a) which is disposed either in the pump housing (12) or in a filter housing (16) mechanically fastened to the pump housing (12); wherein the pump apparatus is additionally configured having at least:

   a closure lid (22) by means of which the pump receptacle opening (14) of the systems housing (10) is able to be sealed in a liquid-tight manner in relation to an adjacent external environment of the systems housing (10); and

   the electric motor (M) which is disposed between an inside of the closure lid (22) and the pump installation (12a) and is disposed either in the pump housing (12) or in a motor housing (20) mechanically fastened to the pump housing (12).
2. Pump apparatus according to Claim 1, wherein the pump apparatus is additionally configured having at least:

   a control electronics unit (26) disposed on an external side of the closure lid (22); and

   at least one contact part (28) which is guided by the closure lid (22) and by way of which the electric motor (M) is connected to the control electronics unit (26) such that the electric motor (M) is able to be actuated by means of the control electronics unit (26).
3. Pump apparatus according to one of the preceding claims, wherein the suction filter (16a) is disposed in the filter housing (16), and wherein the filter housing (16) is fastened to the pump housing (12) by means of a snap-fit connection (18).
4. Pump apparatus according to one of the preceding claims, wherein the suction filter (16) is disposed in a suction tube (32) which is configured in the pump housing (12) or in the filter housing (16) and by way of which the liquid pumped by means of the driven pump installation (12a) is able to be suctioned.
5. Pump apparatus according to Claim 4, wherein a suction protrusion (36) is configured on an end of the suction tube (32) that is directed away from the pump installation (12a); and wherein a suction protrusion central longitudinal axis (38), which runs centrically through the suction protrusion (36), is aligned so as to be inclined in relation to a suction tube central longitudinal axis (34), which runs centrically through the suction tube (32), in such a manner that the suction protrusion (36) is able to be at least partially immersed in a liquid or oil sump (40) which opens into the pump receptacle opening (14) of the systems housing (10).
6. Pump apparatus according to one of the preceding claims, wherein the pump apparatus comprises a pressure port tube (42, 50, 52) which is configured as part of the pump housing (12), as part of the filter housing (16), or as a dedicated component (50) fastened to the pump housing (12) and/or to the filter housing (16), and by way of which the liquid pumped by means of the driven pump installation (12a) is able to be conveyed.
7. Pump apparatus according to Claim 5 or 6, wherein a liquid exit opening (46) of the pressure port tube (42) is configured so as to be recessed in relation to the suction protrusion (36) of the suction tube (32) .
8. Pump apparatus according to one of the preceding claims, wherein the pump apparatus is an oil pump, a cooling-oil pump, and/or a lubricating-oil pump.

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