Novel motor end cover

Abstract

A novel motor end cover comprises a rotary transformer stator mounting hole arranged in the center of the top surface of the outer side of the end cover and a bearing mounting hole arranged in the center of the inner side of the end cover, the center of the rotary transformer stator mounting hole and the center of the bearing mounting hole are located on the same axis, and a junction box cover mounting seat is arranged on the outer side of the circumference of the rotary transformer stator mounting hole. A three-phase connector is arranged on the side wall of the upper portion of the junction box cover installation base, a suspension installation base is arranged on the outer side of the lower portion of the junction box cover installation base, the junction box cover installation base is connected with the bottom of the suspension installation base through an end cover wall, and connecting ribs are arranged between the end cover wall and the lower junction box cover installation base wall and between the end cover wall and the rotary transformer stator installation hole wall. The connecting ribs protrude towards the top end of the end cover, and a weight reduction groove with an h-shaped section is formed among the connecting ribs, the wall of the end cover, the wall of the lower junction box cover mounting seat and the wall of the rotary transformer stator mounting hole.

Description

Technical Field

[0001] This utility model relates to the field of automotive electric drive system technology, specifically to a novel motor end cover. Background Technology

[0002] Cost control is becoming increasingly important in the fierce competition among automakers for electric vehicles. However, the differences in external characteristics between electric and gasoline vehicles necessitate better NVH performance in the powertrain. With the increasing cost advantages of integrated design in new energy vehicles, the complexity of powertrain component design is also increasing. Currently, electric vehicle powertrain systems require integration and lightweighting. However, the motor end caps in current electric vehicle powertrain systems are quite heavy. Achieving lightweighting cannot guarantee the strength and installation requirements of the motor end caps, and product molding is difficult, thus affecting motor performance.

[0003] Therefore, there is an urgent need for a lightweight motor end cap that can guarantee strength and meet installation requirements. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a novel motor end cover. This motor end cover can reduce product weight while ensuring strength and meeting installation requirements.

[0005] The purpose of this utility model is achieved by the following solution: a novel motor end cover, including a resolver stator mounting hole located at the center of the outer top surface of the end cover and a bearing mounting hole located at the center of the inner side of the end cover. The centers of the resolver stator mounting hole and the bearing mounting hole are located on the same axis. A junction box cover mounting seat is provided on the outer circumference of the resolver stator mounting hole. A three-way connector is provided on the upper side wall of the junction box cover mounting seat. A suspension mounting seat is provided on the lower outer side of the junction box cover mounting seat. The bottom of the junction box cover mounting seat and the suspension mounting seat are connected through the end cover wall. A connecting rib is provided between the end cover wall, the lower junction box cover mounting seat wall, and the resolver stator mounting hole wall. The connecting rib protrudes towards the top of the end cover. The connecting rib, the end cover wall, the lower junction box cover mounting seat wall, and the resolver stator mounting hole wall form an "h"-shaped weight reduction groove.

[0006] The upper part of the junction box cover mounting base is a trapezoidal mounting base, and the lower part of the junction box cover mounting base is a semi-circular mounting base. The trapezoidal mounting base and the semi-circular mounting base together form the junction box cover mounting base.

[0007] The first threaded hole at the bottom of the junction box cover mounting base is located at the upper end of the weight reduction groove.

[0008] The suspension mounting base is higher than the junction box cover mounting base.

[0009] A ring of radial ribs is provided between the end cap wall and the bearing mounting hole.

[0010] The advantages of this invention are that this motor end cover can meet the requirements of integrated installation and end cover strength while being lightweight, and it is simple to manufacture and process, thus reducing production costs. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a top view of the present invention;

[0013] Figure 3 This is a bottom view of the present invention;

[0014] Figure 4 This is a first sectional view of the present invention;

[0015] Figure 5 This is the second sectional view of the present invention. Detailed Implementation

[0016] like Figures 1 to 5 As shown, a novel motor end cover includes a resolver stator mounting hole 1 located at the center of the outer top surface of the end cover and a bearing mounting hole 2 located at the center of the inner side of the end cover. The centers of the resolver stator mounting hole 1 and the bearing mounting hole 2 are located on the same axis. A junction box cover mounting seat 4 is provided on the outer circumference of the resolver stator mounting hole 1. A three-way connector 6 is provided on the upper side wall of the junction box cover mounting seat 4. A suspension mounting seat 3 is provided on the lower outer side of the junction box cover mounting seat 4. The bottom of the junction box cover mounting seat 4 and the suspension mounting seat 3 are connected by an end cover wall 5. The suspension mounting seat 3 is higher than the junction box cover mounting seat 4. A connecting rib 11 is provided between the end cover wall 5, the lower junction box cover mounting seat 4 wall, and the resolver stator mounting hole 1 hole wall. The connecting rib 11 protrudes towards the top of the end cover. The connecting rib 11, the end cover wall 5, the lower junction box cover mounting seat 4 wall, and the resolver stator mounting hole 1 hole wall form an "h"-shaped weight-reducing groove 8. The upper part of the junction box cover mounting base 4 is a trapezoidal mounting base, and the lower part of the junction box cover mounting base 4 is a semi-circular mounting base. The trapezoidal mounting base and the semi-circular mounting base together form the junction box cover mounting base 4. The first threaded hole 42 at the lower part of the junction box cover mounting base 4 is located at the upper end of the weight reduction groove 8. A radial rib 7 is provided between the end cover wall 5 and the bearing mounting hole 2.

[0017] To ensure the assembly depth of the second threaded hole 41, that is, to ensure the assembly fit length of the threaded hole while preventing leakage through the bottom of the hole, the end face of the junction box cover mounting base 4 is raised significantly. This results in a thick bottom wall of the first threaded hole 42 on the junction box cover mounting base 4. If the bottom of the threaded hole is simply removed or the thick part is hollowed out, the product will be difficult to demold due to the small and deep area being hollowed out. Therefore, the connecting wall between the resolver stator mounting hole 1 on the motor end cover and the junction box cover mounting base 4 is moved towards the end of the junction box cover mounting base 4, so that it connects with the hollowed-out part at the bottom of the threaded hole of the junction box cover mounting base 4, forming a weight reduction groove 8, which avoids the problem of difficult demolding.

[0018] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications made to the present utility model by those skilled in the art without departing from the spirit of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A novel motor end cover, comprising a resolver stator mounting hole (1) located at the center of the outer top surface of the end cover and a bearing mounting hole (2) located at the center of the inner side of the end cover, wherein the centers of the resolver stator mounting hole (1) and the bearing mounting hole (2) are located on the same axis, characterized in that: A junction box cover mounting seat (4) is provided on the outer circumference of the resolver stator mounting hole (1). A three-way connector (6) is provided on the upper side wall of the junction box cover mounting seat (4). A suspension mounting seat (3) is provided on the lower outer side of the junction box cover mounting seat (4). The bottom of the junction box cover mounting seat (4) and the suspension mounting seat (3) are connected by an end cover wall (5). A connecting rib (11) is provided between the end cover wall (5), the lower junction box cover mounting seat (4) wall, and the resolver stator mounting hole (1) hole wall. The connecting rib (11) protrudes towards the top of the end cover. The connecting rib (11) and the end cover wall (5), the lower junction box cover mounting seat (4) wall, and the resolver stator mounting hole (1) hole wall form a weight reduction groove (8) with an "h" shaped cross section.

2. The novel motor end cover according to claim 1, characterized in that: The upper part of the junction box cover mounting base (4) is a trapezoidal mounting base, and the lower part of the junction box cover mounting base (4) is a semi-circular mounting base. The trapezoidal mounting base and the semi-circular mounting base together form the junction box cover mounting base (4).

3. The novel motor end cover according to claim 1, characterized in that: The first threaded hole (42) at the bottom of the junction box cover mounting base (4) is located at the upper end of the weight reduction groove (8).

4. The novel motor end cover according to claim 1, characterized in that: The suspension mount (3) is higher than the junction box cover mount (4).

5. The novel motor end cover according to claim 1, characterized in that: A radial rib (7) is provided between the end cap wall (5) and the bearing mounting hole (2).

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