Motor end cover and motor using same

Abstract

The utility model discloses a motor end cover and a motor applying the same, the motor end cover comprises an end plate, the outer edge of the end plate axially extends to form a sleeve part, the center of the end plate is provided with a bearing seat, and the outer surface of the end plate is provided with a plurality of strip-shaped reinforcing ribs around the bearing seat. A first annular reinforcing rib, a second annular reinforcing rib and a plurality of Y-shaped reinforcing ribs are arranged on the inner surface of the end plate, the first annular reinforcing rib is located on the periphery of the bearing seat, the second annular reinforcing rib is located between the first annular reinforcing rib and the sleeve part, the Y-shaped reinforcing ribs and the strip-shaped reinforcing ribs surround the periphery of the bearing seat at intervals, and each Y-shaped reinforcing rib comprises a main rib part and two branch rib parts; the head end of the main rib part is connected with the outer wall of the bearing seat, the tail end of the main rib part is connected with the first annular reinforcing rib, and the branch rib part extends outwards from the first annular reinforcing rib to the second annular reinforcing rib. By improving the reinforcing rib structures on the inner and outer surfaces of the end cover, the plane of the end plate drum is changed to disperse noise radiation, the excitation of noise is reduced, and the noise problem of the motor is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a motor end cover and motor applied thereof. BACKGROUND

[0002] The existing motor includes a stator assembly, a rotor assembly and an end cover, the end cover is provided with a bearing chamber in the center, the bearing chamber is provided with a bearing, the rotor assembly is installed on the end cover through the bearing, the rotor shaft produces vibration in the process of rotating, the vibration is transmitted to the end cover through the bearing and produces noise, in order to reduce the noise, the end cover is provided with a plurality of radial reinforcing ribs around the bearing chamber on the inner surface, but the design of the reinforcing ribs is not good, and the noise radiation cannot be effectively dispersed and the noise problem cannot be reduced. SUMMARY

[0003] The utility model provides a motor end cover and motor applied thereof to solve the problem that the motor end cover in the prior art cannot effectively disperse noise radiation.

[0004] The technical scheme of the utility model is as follows:

[0005] The utility model discloses a motor end cover and motor applied thereof to solve the problem that the motor end cover in the prior art cannot effectively disperse noise radiation.

[0006] The main rib part is inclinedly extended from the top of the bearing seat to the first annular reinforcing rib.

[0007] The width of the main rib part is gradually increased from the bearing seat to the first annular reinforcing rib.

[0008] The first end of the main rib part is provided with a platform extended outward from the top surface of the bearing seat.

[0009] The second end of the main rib part is provided with a radial V-shaped groove.

[0010] The width of the branch rib part is gradually increased from the first annular reinforcing rib to the second annular reinforcing rib.

[0011] The second annular reinforcing rib is located at the outer edge of the end plate.

[0012] The inner surface of the end plate is further provided with a third annular reinforcing rib and a V-shaped reinforcing rib, the third annular reinforcing rib is located at the outer edge of the end plate, one side of the V-shaped reinforcing rib is connected with the second annular reinforcing rib and is aligned with the branch rib part, and the other end of the V-shaped reinforcing rib is connected with the third annular reinforcing rib.

[0013] The utility model discloses a motor end cover, including end plate, the outer edge of end plate extends axially and forms sleeve portion, and the central part of end plate is equipped with bearing seat, and its characterized in that: the outer surface of end plate is surrounded with a plurality of radial extension strip -shaped reinforcing rib around bearing seat, and the inner surface of end plate is equipped with first annular reinforcing rib and a plurality of Y -shaped reinforcing rib, and the first annular reinforcing rib is located between bearing seat and sleeve portion and the first annular reinforcing rib is with bearing seat common center, and Y -shaped reinforcing rib is surrounded around bearing seat with strip -shaped reinforcing rib interval, and Y -shaped reinforcing rib includes main rib part and two branch rib parts, and the first end of main rib part is connected with the outer wall of bearing seat, and the tail end of main rib part is connected with the first annular reinforcing rib, and branch rib part extends outward from the first annular reinforcing rib.

[0014] The second object of the utility model is to provide a kind of motor, including motor end cover, and its characterized in that: the motor end cover is described above the motor end cover.

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

[0016] 1、The motor end cover, including end plate, the outer edge of end plate extends axially and forms sleeve portion, and the central part of end plate is equipped with bearing seat, and its characterized in that: the outer surface of end plate is surrounded with a plurality of radial extension strip -shaped reinforcing rib around bearing seat, and the inner surface of end plate is equipped with first annular reinforcing rib, second annular reinforcing rib and a plurality of Y -shaped reinforcing rib, and the first annular reinforcing rib is located at the periphery of bearing seat, and the second annular reinforcing rib is located between the first annular reinforcing rib and the sleeve portion, and the first annular reinforcing rib and the second annular reinforcing rib are coaxial with the bearing seat, and Y -shaped reinforcing rib is surrounded around bearing seat with strip -shaped reinforcing rib interval, and Y -shaped reinforcing rib includes main rib part and two branch rib parts, and the first end of main rib part is connected with the outer wall of bearing seat, and the tail end of main rib part is connected with the first annular reinforcing rib, and branch rib part extends outward from the first annular reinforcing rib to the second annular reinforcing rib. By improving the reinforcing rib structure of the outer surface and the inner surface of the end cover, the noise radiation of the end plate drum plane is changed, the excitation of noise is reduced, and the noise problem of the motor is improved.

[0017] 2、The other advantages of the utility model are described in detail in the embodiment part. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The structural schematic diagram of the motor end cover provided for the utility model embodiment one is shown;

[0019] Figure 2 This is a structural schematic diagram of the motor end cover from another angle provided in Embodiment 1;

[0020] Figure 3 This is a front view of the motor end cover provided in Embodiment 1;

[0021] Figure 4 A front view of the optional motor end cover provided in Embodiment 1;

[0022] Figure 5 This is a schematic diagram of the structure of the motor end cover provided in Embodiment 2;

[0023] Figure 6 for Figure 5 Enlarged view of point A. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] Example 1:

[0026] like Figures 1 to 3 As shown, this embodiment provides a motor end cover, including an end plate 1. The outer edge of the end plate 1 extends axially to form a sleeve portion 11. A bearing seat 2 is provided in the center of the end plate 1. The end plate 1 is characterized in that: the outer surface of the end plate 1 is surrounded by a plurality of radially extending strip-shaped reinforcing ribs 3 around the bearing seat 2. The inner surface of the end plate 1 is provided with a first annular reinforcing rib 5, a second annular reinforcing rib 6 and a plurality of Y-shaped reinforcing ribs 4. The first annular reinforcing rib 5 is located around the bearing seat 2. The second annular reinforcing rib 6 is located between the first annular reinforcing rib 5 and the sleeve portion 11 and the first annular reinforcing rib 5, the second annular reinforcing rib 6 and the bearing seat 2 are concentric. The Y-shaped reinforcing ribs 4 and the strip-shaped reinforcing ribs 3 are spaced around the bearing seat 2. The Y-shaped reinforcing ribs 4 include a main rib portion 41 and two branch rib portions 42. The first end of the main rib portion 41 is connected to the outer wall of the bearing seat 2, and the tail end of the main rib portion 41 is connected to the first annular reinforcing rib 5. The branch rib portions 42 extend outward from the first annular reinforcing rib 5 to the second annular reinforcing rib 6.

[0027] The motor end cover, with Y-shaped reinforcing ribs 4 and strip-shaped reinforcing ribs 3 spaced around the bearing seat 2, and a first annular reinforcing rib 5 connected to the Y-shaped reinforcing ribs 4, alters the dispersion of noise radiation on the drum surface of the end plate 1, reducing noise excitation and thus improving the noise problem. Through simulation, this invention improves the motor end cover modal value: the first-order vibration frequency increases from 928.39Hz to 1308.5Hz, an increase of 380.11Hz, or 41%. This effectively improves the noise problem. This invention incorporates topology optimization design in the early design stage, such as simulation analysis of the end cover, adjusting certain structural designs, changing its modal values, avoiding the motor's natural frequency values, preventing resonance, and improving the noise problem.

[0028] In this embodiment, there are eight Y-shaped reinforcing ribs 4 and eight strip-shaped reinforcing ribs 3. The motor end cover is a cast aluminum end cover.

[0029] The aforementioned main rib 41 extends obliquely from the top of the bearing housing 2 to the first annular reinforcing rib 5. This strengthens the contact surface between the main rib 41 and the bearing housing 2, thereby enhancing the structural strength of the bearing chamber 2.

[0030] The width of the main rib 41 mentioned above gradually increases from the bearing seat 2 to the first annular reinforcing rib 5.

[0031] The width of the branch rib 42 mentioned above gradually increases from the first annular reinforcing rib 5 to the second annular reinforcing rib 6.

[0032] The second annular reinforcing rib 6 may be located at the outer edge of the end plate 1 or the second annular reinforcing rib 6 may be at a certain distance from the outer edge of the end plate 1.

[0033] As an option, such as Figure 4 As shown, when the second annular reinforcing rib 6 is a certain distance from the outer edge of the end plate 1, the inner surface of the end plate 1 can also be provided with a third annular reinforcing rib 7 and a V-shaped reinforcing rib 8. The third annular reinforcing rib 7 is located at the outer edge of the end plate 1, one side of the V-shaped reinforcing rib 8 is connected to the second annular reinforcing rib 6 and aligned with the branch rib portion 42, and the other end of the V-shaped reinforcing rib 8 is connected to the third annular reinforcing rib 7. This multi-layered, branched arrangement further disperses vibrations to all parts of the end plate 1, further reducing noise. This utility model... Figure 4 A first annular reinforcing rib 5, a second annular reinforcing rib 6, and a third annular reinforcing rib 7 are arranged around the periphery of the bearing housing 2. Designers in the art may also provide a fourth annular reinforcing rib and a fifth annular reinforcing rib as needed. Several V-shaped reinforcing ribs 8 are also provided inside the fourth and fifth annular reinforcing ribs, and the arrangement of the several V-shaped reinforcing ribs 8 is similar. Figure 4 The layout will not be described here.

[0034] Example 2:

[0035] likeFigure 5 、 Figure 6 The motor end cover provided by the embodiment is similar to the motor end cover described in the first embodiment, except that:

[0036] The first end of the main rib 41 is provided with a platform 411 extending outward from the top surface of the bearing seat. This further enhances the connection effect of the main rib 41 on the bearing seat 2.

[0037] The tail end of the main rib 41 is provided with a radial V-shaped groove 412. The V-shaped groove 412 reduces the amount of material used.

[0038] Embodiment three:

[0039] The motor end cover provided by the embodiment is similar to the motor end cover described in the first embodiment, except that:

[0040] The strip-shaped reinforcing ribs 3 are arranged on the outer surface of the end plate 1, and the first annular reinforcing rib 5 and the plurality of Y-shaped reinforcing ribs 4 are arranged on the inner surface of the end plate 1.

[0041] Embodiment four:

[0042] The motor provided by the embodiment comprises a motor end cover 100, wherein the motor end cover 100 is the motor end cover described in the first embodiment, the second embodiment, or the third embodiment.

[0043] Through the improvement of the motor end cover 100, the noise problem of the motor is effectively improved.

[0044] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An electric machine end cover comprising an end plate (1), the outer edge of the end plate (1) extending axially to form a sleeve portion (11), the inner surface of the end plate (1) being centrally provided with a bearing seat (2), characterized in that: The outer surface of the end plate (1) is surrounded by a plurality of radially extending strip-shaped reinforcing ribs (3) around the bearing seat (2), the inner surface of the end plate (1) is provided with a first annular reinforcing rib (5), a second annular reinforcing rib (6) and a plurality of Y-shaped reinforcing ribs (4), the first annular reinforcing rib (5) is located at the periphery of the bearing seat (2), the second annular reinforcing rib (6) is located between the first annular reinforcing rib (5) and the sleeve part (11), and the first annular reinforcing rib (5) and the second annular reinforcing rib (6) have a common center with the bearing seat (2), the Y-shaped reinforcing rib (4) is spaced around the bearing seat (2) and surrounds the bearing seat (2) together with the strip-shaped reinforcing rib (3), the Y-shaped reinforcing rib (4) comprises a main rib part (41) and two branch rib parts (42), the leading end of the main rib part (41) is connected to the outer wall of the bearing seat (2), the trailing end of the main rib part (41) is connected to the first annular reinforcing rib (5), and the branch rib part (42) extends outward from the first annular reinforcing rib (5) to the second annular reinforcing rib (6).

2. An electrical machine end shield according to claim 1, characterized in that: The main rib part (41) extends obliquely from the top of the bearing seat (2) to the first annular reinforcing rib (5).

3. An electrical machine end shield according to claim 2, characterised in that: The width of the main rib part (41) gradually increases from the bearing seat (2) to the first annular reinforcing rib (5).

4. An electrical machine end shield according to claim 3, characterised in that: The leading end of the main rib part (41) is provided with a platform (411) extending outward from the top surface of the bearing seat.

5. An electrical machine end shield according to claim 4, characterised in that: The trailing end of the main rib part (41) is provided with a radial V-shaped groove (412).

6. An electrical machine end shield according to any one of claims 1 to 5, characterized in that: The width of the branch rib part (42) gradually increases from the first annular reinforcing rib (5) to the second annular reinforcing rib (6).

7. An electrical machine end shield according to claim 6, characterised in that: The second annular reinforcing rib (6) is located at the outer edge of the end plate (1).

8. An electrical machine end shield according to claim 6, characterized in that: The inner surface of the end plate (1) is further provided with a third annular reinforcing rib (7) and a V-shaped reinforcing rib (8), the third annular reinforcing rib (7) is located at the outer edge of the end plate (1), one side of the V-shaped reinforcing rib (8) is connected to the second annular reinforcing rib (6) and aligned with the branch rib part (42), and the other end of the V-shaped reinforcing rib (8) is connected to the third annular reinforcing rib (7).

9. An electric machine end cover comprising an end plate (1), the outer edge of the end plate (1) extending axially to form a sleeve portion (11), the end plate (1) being provided with a bearing seat (2) in the centre thereof, characterised in that: The outer surface of the end plate (1) is surrounded by a plurality of radially extending strip-shaped reinforcing ribs (3) around the bearing seat (2), the inner surface of the end plate (1) is provided with a first annular reinforcing rib (5) and a plurality of Y-shaped reinforcing ribs (4), the first annular reinforcing rib (5) is located between the bearing seat (2) and the sleeve part (11), and the first annular reinforcing rib (5) has a common center with the bearing seat (2), the Y-shaped reinforcing rib (4) is spaced around the bearing seat (2) and surrounds the bearing seat (2) together with the strip-shaped reinforcing rib (3), the Y-shaped reinforcing rib (4) comprises a main rib part (41) and two branch rib parts (42), the leading end of the main rib part (41) is connected to the outer wall of the bearing seat (2), the trailing end of the main rib part (41) is connected to the first annular reinforcing rib (5), and the branch rib part (42) extends outward from the first annular reinforcing rib (5).

10. An electric machine comprising an electric machine end shield (100), characterized in that: The motor end cover (100) is the motor end cover according to any one of claims 1 to 9.

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