Self-contained motor driven hydraulic supply unit
First Claim
1. A compact hydraulic aggregate having a housing (10) forming a reservoir for a pressure fluid and comprising a housing bottom (12), a housing cover (11) and a housing middle part (13) therebetween in form of a profiled tube, having, located in the housing (10), an electric motor (21) whose stator laminated core (19) is held by the housing middle part (13), and which can be connected to an electrical network via a connection box (53) on the housing cover (11), and having a pump (46) located within the housing (10) in a region of the housing bottom (12) and capable of being driven by the electric motor (21), wherein the housing middle part (13) comprises axially extending holding webs (15) which are directed inwardly to engage at respective positions the stator laminated core (19) of the electric motor (21) to hold the stator core, and wherein there are plural sets of the holding webs located respectively at successive locations around the housing, each set having a plurality of the webs.
1 Assignment
0 Petitions
Accused Products
Abstract
A compact hydraulic supply unit has a housing forming a reservoir for a pressure fluid, and includes a housing bottom, a housing cover and a housing middle part therebetween in the form of a profiled tube. An electric motor has a laminated stator core held by the housing middle part, and drives a pump located at the housing bottom. The housing middle part has axially extending internal holding Webs for holding the laminated stator core. The size of the housing middle part is independent of the size of the electric motor, so that, with a low structural height, the housing can be so formed that it accepts a larger volume of pressure fluid.
65 Citations
18 Claims
- 1. A compact hydraulic aggregate having a housing (10) forming a reservoir for a pressure fluid and comprising a housing bottom (12), a housing cover (11) and a housing middle part (13) therebetween in form of a profiled tube, having, located in the housing (10), an electric motor (21) whose stator laminated core (19) is held by the housing middle part (13), and which can be connected to an electrical network via a connection box (53) on the housing cover (11), and having a pump (46) located within the housing (10) in a region of the housing bottom (12) and capable of being driven by the electric motor (21), wherein the housing middle part (13) comprises axially extending holding webs (15) which are directed inwardly to engage at respective positions the stator laminated core (19) of the electric motor (21) to hold the stator core, and wherein there are plural sets of the holding webs located respectively at successive locations around the housing, each set having a plurality of the webs.
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7. A compact hydraulic aggregate having a housing (10) forming a reservoir for a pressure fluid and comprising a housing bottom (12), a housing cover (11) and a housing middle part (13) therebetween in form of a profiled tube, having, located in the housing (10), an electric motor (21) whose stator laminated core (19) is held by the housing middle part (13), and which can be connected to an electrical network via a connection box (53) on the housing cover (11), and having a pump (46) located within the housing (10) in a region of the housing bottom (12) and capable of being driven by the electric motor (21), wherein the housing middle part (13) comprises axially extending holding webs (15) by which the stator laminated core (19) of the electric motor (21) is held;
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wherein the housing middle part (13) comprises a further axially extending internal web (25) disposed in a first angular region located between a first set of webs and a second successive set of webs of said holding webs (15) and being broader in circumferential direction of the housing middle part (13) than the holding webs (15), the internal web (25) serving to secure a monitoring member (27) disposed externally on the housing (10). - View Dependent Claims (8, 9, 10)
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11. A compact hydraulic aggregate having a housing (10) forming a reservoir for a pressure fluid and comprising a housing bottom (12), a housing cover (11) and a housing middle part (13) therebetween in form of a profiled tube, having, located in the housing (10), an electric motor (21) whose stator laminated core (19) is held by the housing middle part (13), and which can be connected to an electrical network via a connection box (53) on the housing cover (11), and having a pump (46) located within the housing (10) in a region of the housing bottom (12) and capable of being driven by the electric motor (21), wherein the housing middle part (13) comprises axially extending holding webs (15) by which the stator laminated core (19) of the electric motor (21) is held;
- and further comprises an electrical device having a further electric motor and a fan wheel driven by the further electric motor, disposed in the region of the housing bottom (12), and wherein a supply cable (64) for the electrical device is guided in an axially extending cable duct (66) of the housing middle part (13) to the housing cover (11).
- View Dependent Claims (14, 15, 16)
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17. A compact hydraulic aggregate having a housing (10) forming a reservoir for a pressure fluid and comprising a housing bottom (12), a housing cover (11) and a housing middle part (13) therebetween in form of a profiled tube, having, located in the housing (10), an electric motor (21) whose stator laminated core (19) is held by the housing middle part (13), and which can be connected to an electrical network via a connection box (53) on the housing cover (11), and having a pump (46) located within the housing (10) in a region of the housing bottom (12) and capable of being driven by the electric motor (21), wherein the housing middle part (13) comprises axially extending holding webs (15) by which the stator laminated core (19) of the electric motor (21) is held;
- and wherein the holding webs are located in an arrangement based on a regular polygon circumscribing the housing middle part wherein one of said holding webs (IS) extends at a center of each external partial surface 114) of the polygon circumscribing the housing middle part (13) and lying between two corners of the polygon.
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18. A compact hydraulic aggregate having a housing (10) forming a reservoir for a pressure fluid and comprising a housing bottom (12), a housing cover (11) and a housing middle part (13) therebetween in form of a profiled tube, having, located in the housing (10), an electric motor (21) whose stator laminated core (19) is held by the housing middle part (13), and which can be connected to an electrical network via a connection box (53) on the housing cover (11), and having a pump (46) located within the housing (10) in a region of the housing bottom (12) and capable of being driven by the electric motor (21), wherein the housing middle part (13) comprises axially extending holding webs (15) which are directed inwardly to engage at respective positions the stator laminated core (19) of the electric motor (21) to hold the stator core, and wherein each of a plurality of the holding webs is provided with a bearing shoulder (18) for receiving the stator core.
Specification