Motor end cover and motor using same

Abstract

The utility model discloses a motor end cover and a motor applying the same, which comprises a metal part (1) positioned in the center and an injection molding part (2) positioned on the periphery of the metal part (1), and the metal part (1) comprises a cylindrical bearing seat (11) positioned in the center and an annular plate (13) positioned on the periphery of the bearing seat (11). A plurality of mounting feet (14) extend out of the edge of the annular plate (13) at intervals in the circumferential direction, the annular plate (13) and the mounting feet (14) are wrapped and covered with the injection molding part (2), mounting holes (140) are formed in the positions, close to the edges, of the outer sides of the mounting feet (14), and the positions, corresponding to the mounting holes (140), of the injection molding part (2) are hollowed out to expose the mounting holes (140). The weight is light, secondary processing is not needed after injection molding, and noise is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to a motor end cover and motor applying it. BACKGROUND

[0002] The existing diameter is in 140mm and above big motor, usually adopts cast aluminum end cover, there is raw material price is expensive, processing accuracy is not enough, weight is big, easy to produce noise etc.

[0003] The existing diameter is below 100mm small motor, there is the scheme of bearing chamber BB cover (manufacture with metal), the rest part is BMC injection plastic. SUMMARY

[0004] The utility model discloses a motor end cover and motor applying it, solve the diameter in the prior art in 140mm and above big motor, usually adopt cast aluminum end cover, there is raw material price is expensive, processing accuracy is not enough, weight is big, easy to produce the technical problem of noise.

[0005] The utility model discloses a motor end cover and motor applying it, solve the diameter in the prior art in 140mm and above big motor, usually adopt cast aluminum end cover, there is raw material price is expensive, processing accuracy is not enough, weight is big, easy to produce the technical problem of noise.

[0006] A kind of motor end cover, it is characterized by: including the metal component in center and the injection molding piece in the peripheral of metal component, wherein metal component includes the cylindrical bearing seat in central position and the annular plate in the peripheral of bearing seat, there is a plurality of installation feet from the edge of annular plate and spaced apart in circumferential direction, injection molding piece is wrapped and covered on annular plate and a plurality of installation feet, installation hole is set at the outside of installation foot close to edge, injection molding piece is hollowed out to expose installation hole at the position corresponding to installation hole.

[0007] The injection molding piece described above is circular ring-shaped plate structure, step stopper is set at the edge of injection molding piece, diameter is equal to or greater than 140mm.

[0008] The first through hole is spaced apart in the middle position of installation foot, and the injection molding piece fills the first through hole to strengthen the bonding force of the injection molding piece and the installation foot.

[0009] The first convex edge is bent at the two side edges of installation foot, and the recess is formed between the two adjacent first convex edges, the injection molding piece fills the recess and wraps the first convex edge, to strengthen the bonding force of the injection molding piece and the installation foot.

[0010] The aforementioned annular plate is provided with several second through holes at intervals along the circumference. The injection molded part fills the second through holes to enhance the bonding force between the injection molded part and the annular plate.

[0011] The above-mentioned second convex edge is bent out on the outer edge of the ring plate to form a depression in the middle of the ring plate. The injection molded part fills the depression and wraps the second convex edge to strengthen the bonding force between the injection molded part and the ring plate.

[0012] An inclined connecting plate is provided between the cylindrical bearing housing and the annular plate. One end of the connecting plate is connected to the opening of the cylindrical bearing housing, and the other end of the connecting plate is connected to the inner edge of the annular plate. A ventilation groove is formed between the connecting plate and the cylindrical bearing housing for heat dissipation.

[0013] The length L of the mounting foot mentioned above is greater than 50mm.

[0014] An electric motor includes a motor housing, an end cover, a stator assembly, and a rotor assembly, wherein the end cover is mounted on the motor housing, characterized in that: the end cover is the motor end cover described above.

[0015] Compared with the prior art, this utility model has the following advantages:

[0016] 1. The motor end cover of this utility model includes a metal component located at the center and an injection-molded part located around the metal component. The metal component includes a cylindrical bearing seat located at the center and an annular plate located around the bearing seat. Several mounting feet extend circumferentially from the edge of the annular plate. The injection-molded part covers the annular plate and the mounting feet. Mounting holes are provided on the outer side of the mounting feet near the edge. The injection-molded part is hollowed out at the position corresponding to the mounting holes to expose the mounting holes. This not only reduces costs but also ensures the strength of the end cover, is lightweight, requires no secondary processing after injection molding, and has low noise.

[0017] 2. Other advantages of this utility model are described in detail in the embodiment section of the specification. Attached Figure Description

[0018] Figure 1 A perspective view of the motor end cover provided by this utility model from one angle;

[0019] Figure 2 A perspective view of the motor end cover provided by this utility model from another angle;

[0020] Figure 3 A top view of the motor end cover provided by this utility model;

[0021] Figure 4 for Figure 3 Sectional view of AA;

[0022] Figure 5The utility model provides an exploded view of one angle of motor end cover provided by the utility model;

[0023] Figure 6 The utility model provides an exploded view of another angle of motor end cover provided by the utility model;

[0024] Figure 7 It is the perspective view of the motor provided by the utility model embodiment two. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantage of the utility model embodiment more clear, the technical scheme in the utility model embodiment will be clearly and completely described below in conjunction with the drawings in the utility model embodiment, obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor are within the protection scope of the utility model.

[0026] Embodiment one:

[0027] As Figures 1 to 6 The utility model provides a motor end cover, including the metal part 1 in the center and the injection molding piece 2 in the periphery of metal part 1, wherein metal part 1 includes the cylindrical bearing seat 11 in the center position and the annular plate 13 in the periphery of bearing seat 11, and a plurality of installation feet 14 are spaced apart and extended from the edge of annular plate 13 in the circumferential direction, the injection molding piece 2 is wrapped and covered on annular plate 13 and a plurality of installation feet 14, installation hole 140 is arranged at the edge near the outside of installation foot 14, and the installation hole 140 is exposed by hollowing out in the position corresponding to installation hole 140. It not only can reduce cost, but also can guarantee end cover strength, light weight, no secondary processing after injection molding, and small noise.

[0028] The injection molding piece 2 is the circular ring plate structure, and the step stopper 21 is arranged at the edge of injection molding piece 2, the diameter is equal to or greater than 140mm, and the metal part 1 is manufactured by stamping.

[0029] The first through hole 141 is arranged at the middle position of installation foot 14, and the injection molding piece 2 fills the first through hole 141 to strengthen the bonding force of injection molding piece 2 and installation foot 14.

[0030] The first convex edge 142 is bent at the two side edges of installation foot 14, the recess is formed between the adjacent two first convex edges 142, the injection molding piece 2 fills the recess and wraps the first convex edge 142, to strengthen the bonding force of injection molding piece 2 and installation foot 14.

[0031] The annular plate 13 is provided with a plurality of second through holes 131 at intervals in the circumferential direction, and the injection molding part 2 fills the second through holes 131 to enhance the bonding force between the injection molding part 2 and the annular plate 13.

[0032] The annular plate 13 is provided with a plurality of second through holes 131 at intervals in the circumferential direction, and the injection molding part 2 fills the second through holes 131 to enhance the bonding force between the injection molding part 2 and the annular plate 13.

[0033] The annular plate 13 is provided with a plurality of second through holes 131 at intervals in the circumferential direction, and the injection molding part 2 fills the second through holes 131 to enhance the bonding force between the injection molding part 2 and the annular plate 13.

[0034] The length L of the mounting leg 14 is greater than 50 mm.

[0035] The mounting leg 14 is provided with four mounting legs, which are uniformly distributed in the circumferential direction and have uniform stress and guaranteed structural strength.

[0036] Embodiment two:

[0037] As shown in Figure 7 The motor comprises a motor shell 200, an end cover 100, a stator assembly and a rotor assembly, the end cover 100 is installed on the motor shell 200, and the end cover is characterized in that the end cover is the motor end cover in the embodiment one.

[0038] The above embodiment is a preferred embodiment of the utility model, but the embodiment of the utility model is not limited to this, and any change, modification, replacement, combination and simplification made without departing from the spirit and principle of the utility model are equivalent replacement modes, which are all included in the protection scope of the utility model.

Claims

1. An electrical machine end cap, characterized by: The metal part (1) in the center and the injection molding part (2) in the periphery of the metal part (1), wherein the metal part (1) comprises a cylindrical bearing seat (11) in the center and an annular plate (13) in the periphery of the bearing seat (11), a plurality of mounting feet (14) are spaced apart from the edge of the annular plate (13) in the circumferential direction, the injection molding part (2) is wrapped on the annular plate (13) and the plurality of mounting feet (14), mounting holes (140) are arranged on the outside of the mounting feet (14) near the edge, and the injection molding part (2) is hollowed out at positions corresponding to the mounting holes (140) to expose the mounting holes (140).

2. An electrical machine end shield according to claim 1, characterized in that: The injection molding part (2) is a circular ring-shaped plate structure, and a stepped shoulder (21) is arranged at the edge of the injection molding part (2), and the diameter is equal to or greater than 140 mm.

3. A motor endshield as recited in claim 1, characterized by: A plurality of first through holes (141) are arranged at the middle position of the mounting feet (14), and the injection molding part (2) fills the first through holes (141) to strengthen the bonding force between the injection molding part (2) and the mounting feet (14).

4. An electrical machine end shield according to claim 3, characterised in that: The first convex edges (142) are bent at the two side edges of the mounting feet (14), and the grooves are formed between the two adjacent first convex edges (142), and the injection molding part (2) fills the grooves and wraps the first convex edges (142) to strengthen the bonding force between the injection molding part (2) and the mounting feet (14).

5. An electrical machine end shield according to any one of claims 1 to 4, characterised in that: The annular plate (13) is spaced apart in the circumferential direction and a plurality of second through holes (131) are arranged, and the injection molding part (2) fills the second through holes (131) to strengthen the bonding force between the injection molding part (2) and the annular plate (13).

6. An electrical machine end shield according to claim 5, characterised in that: The second convex edges (132) are bent at the outside edges of the annular plate (13) to form a recess in the middle of the annular plate (13), and the injection molding part (2) fills the recess and wraps the second convex edges (132) to strengthen the bonding force between the injection molding part (2) and the annular plate (13).

7. An electrical machine end shield according to claim 6, characterised in that: The inclined connecting plate (12) is arranged between the cylindrical bearing seat (11) and the annular plate (13), one end of the connecting plate (12) is connected with the opening of the cylindrical bearing seat (11), the other end of the connecting plate (12) is connected with the inside edge of the annular plate (13), and the ventilation groove (16) is formed between the connecting plate (12) and the cylindrical bearing seat (11) for heat dissipation.

8. An electrical machine end shield according to claim 7, characterised in that: The length L of the mounting feet (14) is greater than 50 mm.

9. An electrical machine end shield according to claim 8, characterised in that: The plurality of mounting feet (14) refers to 4, which are uniformly and circumferentially distributed.

10. An electric machine comprising a machine housing, an end cap, a stator assembly and a rotor assembly, the end cap being mounted on the machine housing, characterized by: The end cover adopts the motor end cover of any one of claims 1 to 9.

Images