CN212486248U

CN212486248U - Motor end cover

Info

Publication number: CN212486248U
Application number: CN202020916419.2U
Authority: CN
Inventors: 郭建华; 张同和; 朱桂君
Original assignee: Borg Sizhong Changzhou Electric Machinery Co ltd
Current assignee: Borg Sizhong Changzhou Electric Machinery Co ltd
Priority date: 2020-05-26
Filing date: 2020-05-26
Publication date: 2021-02-05
Anticipated expiration: 2030-05-26

Abstract

The disclosure provides a motor end cover, and belongs to the field of motors. The motor end cover includes end cover body and bearing frame, and the bearing frame is located the middle part of end cover body, and the bearing frame is cylindricly, has the shaft hole in the bearing frame, and the shaft hole runs through the relative both ends of bearing frame, and shaft hole and bearing frame are coaxial to be arranged, and the one end in shaft hole has the opening, and the opening part in shaft hole has the riveting blank pressing, and the axis circumference in shaft hole is arranged along the riveting blank pressing, and the internal perisporium in shaft hole has the recess near the position of riveting the blank pressing, and the axis circumference in. Through the motor end cover provided by the embodiment of the disclosure, when the motor end cover is riveted with the bearing, the radial deformation of the motor end cover is eliminated, so that the bearing is not easy to deform and damage.

Description

Motor end cover

Technical Field

The disclosure relates to the field of motors, in particular to a motor end cover.

Background

The motor is mainly used for generating driving torque and is used as a power source of electric appliances or various machines. Electric motors are widely used in various industries. In the motor, the bearing is used as a connecting device of a static part and a rotating part in the motor, can support the smooth and quiet operation of the motor and plays an important role in receiving the load of the motor. Therefore, the quality of the assembly of the bearings directly affects the service life and the overall performance of the motor.

In the related art, in order to ensure a compact structure of the motor, the bearing is usually installed in a bearing chamber of a motor end cover by riveting.

However, when the bearing is mounted on the end cover of the motor by riveting, the bearing chamber is easily deformed radially by riveting, so that the bearing at the deformed position is squeezed, and then the deformation of the ball and the raceway of the bearing is caused, so that the bearing is damaged. Once the bearings are damaged, the service life and the overall performance of the motor are directly affected.

SUMMERY OF THE UTILITY MODEL

The embodiment of the disclosure provides a motor end cover, which can eliminate radial deformation of the motor end cover when the motor end cover is riveted with a bearing, so that the bearing is not easy to deform and damage.

The technical scheme is as follows:

the embodiment of the disclosure provides a motor end cover, motor end cover includes end cover body and bearing frame, the bearing frame is located the middle part of end cover body, the bearing frame is cylindric, the shaft hole has in the bearing frame, the shaft hole runs through the relative both ends of bearing frame, just the shaft hole with the bearing frame is coaxial to be arranged, the first end in shaft hole has the opening, the opening part in shaft hole has the riveting blank pressing, the riveting border the axis circumference in shaft hole arranges, the internal perisporium in shaft hole is close to the position of riveting the blank pressing has the recess, the recess is followed the axis circumference in shaft hole arranges.

In one implementation of the present disclosure, the inner peripheral wall of the riveting edge has a riveting inner arc surface, and the riveting inner arc surface is connected with the inner peripheral wall of the shaft hole.

In another implementation manner of the present disclosure, an annular installation portion is arranged in the middle of the end cover body, the annular installation portion is surrounded outside the riveting edge, and a riveting gap is formed between the inner peripheral wall of the annular installation portion and the outer peripheral wall of the riveting edge.

In yet another implementation of the present disclosure, the second end of the shaft bore has an inner flange disposed coaxially with the shaft bore.

In yet another implementation of the present disclosure, a plate surface of the end cap body has a plurality of arc-shaped bosses for connecting to a centering motor housing, each of the arc-shaped bosses is concentric with the bearing seat, and the arc-shaped bosses are circumferentially spaced along an outer edge of the end cap body.

In another implementation manner of the present disclosure, a plurality of fixing members are further disposed on a plate surface of the end cover body, and each fixing member is located between two adjacent arc-shaped bosses.

In another implementation of the present disclosure, a plate surface of the end cover body has a plurality of ribs along a radial direction thereof.

In another implementation manner of the present disclosure, a plurality of heat dissipation holes are formed on a surface of the end cap body.

In yet another implementation of the present disclosure, the clinch edge is a soft metal.

In another implementation of the present disclosure, the end cap body and the bearing seat are an integrally formed structure.

The technical scheme provided by the embodiment of the disclosure has the following beneficial effects:

when the motor end cover accommodating bearing provided by the embodiment of the disclosure, the inner peripheral wall of the bearing seat of the motor end cover is provided with the groove, and the groove is positioned on the inner wall of the bearing seat close to the riveting edge. Therefore, when the bearing seat is riveted, the bearing seat is only deformed at the groove due to riveting, so that the outer ring of the bearing is not easily extruded, and the deformation of the ball raceway of the bearing can not be caused naturally. That is to say, can avoid the bearing in the bearing frame impaired when receiving the riveting through the recess, and then guarantee the life and the wholeness ability of motor.

The motor end cover provided by the embodiment of the disclosure has the advantages of simple structure, convenience in manufacturing, low processing cost and wide application.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a motor end cover provided in an embodiment of the present disclosure;

fig. 2 is a top view of a motor end cover provided by an embodiment of the present disclosure.

The symbols in the drawings represent the following meanings:

1. an end cap body;

11. an installation part; 111. riveting the gap; 12. an arc-shaped boss; 121. a clamping block; 13. a fixing member; 14. reinforcing ribs; 15. heat dissipation holes; 16. a step portion;

2. a bearing seat;

20. a shaft hole; 21. riveting and pressing edges; 211. riveting the inner arc surface; 22. a groove; 23. an inner flange.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

The embodiment of the present disclosure provides a motor end cover, as shown in fig. 1, the motor end cover includes end cover body 1 and bearing frame 2, bearing frame 2 is located the middle part of end cover body 1, bearing frame 2 is cylindricly, shaft hole 20 has in the bearing frame 2, shaft hole 20 runs through the relative both ends of bearing frame 2, and shaft hole 20 and the coaxial arrangement of bearing frame 2, the first end in shaft hole 20 has the opening, the opening part in shaft hole 20 has riveting blank pressing 21, riveting blank pressing 21 arranges along the axis circumference in shaft hole 20, the position that the internal perisporium of shaft hole 20 is close to riveting blank pressing 21 has recess 22, recess 22 arranges along the axis circumference in shaft hole 20.

When the motor end cover provided by the embodiment of the present disclosure accommodates the bearing, since the inner peripheral wall of the bearing seat 2 of the motor end cover is provided with the groove 22, and the groove 22 is located at the inner wall of the bearing seat 2 close to the riveting edge 21. Therefore, when the bearing seat 2 is riveted, the deformation of the bearing seat 2 caused by riveting is only generated at the groove 22, so that the bearing outer ring is not easy to extrude, and the deformation of the bearing ball raceway can not be caused naturally. That is to say, through recess 22 can avoid the bearing in bearing frame 2 when receiving the riveting impaired, and then guarantee the life and the wholeness ability of motor.

Alternatively, the inner peripheral wall of the rivet 21 has a rivet intrados surface 211, and the rivet intrados surface 211 is connected to the inner peripheral wall of the shaft hole 20.

In the above implementation manner, the inner peripheral wall of the riveting edge 21 is provided with the riveting inner arc surface 211, so that the riveting edge 21 can deform along the shape of the riveting inner arc surface 211 when being riveted, and further the riveting edge 21 deforms rapidly at the opening of the shaft hole 20, so that the bearing is clamped and fixed, and the bearing is ensured to be firmly installed.

Illustratively, the clinching edge 21 may be a soft metal.

In above-mentioned implementation, rivet blank holder 21 and select soft metal preparation for use, can be so that bearing frame 2 when receiving the riveting, rivet blank holder 21 can take place deformation fast, and then installs the bearing in bearing frame 2, improves the installation effectiveness.

Illustratively, the clincher 21 may be an aluminum material.

Optionally, the second end of the shaft bore 20 has an inner flange 23, the inner flange 23 being arranged coaxially with the shaft bore 20.

In the above implementation, the second end of the shaft hole 20 has the inner flange 23, so that the inner flange 23 and the deformed riveting and pressing edge 21 can firmly mount the bearing in the shaft hole 20, and ensure that the bearing cannot be separated from the shaft hole 20.

And, the inner flange 23 is arranged coaxially with the shaft hole 20, so that the rotating shaft of the motor can smoothly pass through the bearing seat 2, the rotation of the motor cannot be influenced by the internal obstruction of the bearing seat 2, and the normal operation of the motor is ensured.

Fig. 2 is a top view of a motor end cover provided in an embodiment of the present disclosure, and with reference to fig. 2, optionally, an annular mounting portion 11 is provided in a middle portion of the end cover body 1, the annular mounting portion 11 is enclosed outside the rivet 21, and a rivet gap 111 is formed between an inner peripheral wall of the annular mounting portion 11 and an outer peripheral wall of the rivet 21.

In the above implementation manner, by forming the riveting gap 111 between the annular mounting portion 11 and the riveting edge 21, the riveting edge 21 can deform and have a space to accommodate when the bearing seat 2 is riveted, so that the riveting edge 21 cannot deform or deform difficultly due to the obstruction of the annular mounting portion 11. That is to say, through riveting clearance 111, can be so that riveting edge 21 has sufficient space to hold its deformation that produces when receiving the riveting for bearing frame 2 can be riveted smoothly, and then guarantees the smooth installation of bearing, improves work efficiency.

In addition, when the setting of annular installation portion 11 can make end cover body 1 and bearing installation together, have the annular interval between end cover body 1 and the bearing, be convenient for quick distribute out the inside heat of bearing, can not influence its heat dissipation because of end cover body 1 direct large tracts of land and bearing contact, annular installation portion 11 also can come the weight that lightens the end cover through the annular space simultaneously.

Optionally, a plate surface of the end cover body 1 is provided with a plurality of arc-shaped bosses 12 for connecting to the centering motor shell, each arc-shaped boss 12 is concentric with the bearing seat 2, and the arc-shaped bosses 12 are circumferentially arranged at intervals along the outer edge of the end cover body 1.

In the above implementation manner, the arc-shaped boss 12 is arranged at the outer edge of the end cover body 1, and the end cover body 1 can be centered and clamped with the motor shell preliminarily through the arc-shaped boss 12, so that the end cover body 1 can be conveniently installed on the motor shell.

Illustratively, the number of the arc-shaped bosses 12 may be four. The four arc-shaped bosses 12 are divided into two groups, each group comprises two arc-shaped bosses 12, and the two groups of arc-shaped bosses 12 are oppositely arranged on the outer edge of the end cover body 1.

Illustratively, one end of the arc-shaped boss 12 is provided with a clamping block 121 for clamping on the motor shell, and the clamping block 121 protrudes out of the arc-shaped boss 12 along the axial direction of the end cover body 1.

In the above implementation, the clamping block 121 can be buckled with the motor housing preliminarily together, so that the end cover body 1 is conveniently installed on the motor housing.

Optionally, a plurality of fixing pieces 13 are further provided on one plate surface of the end cover body 1, and each fixing piece 13 is located between two adjacent arc-shaped bosses 12.

In the above implementation, the fixing member 13 is used to mount the end cover body 1 and the motor housing together, so as to ensure that the motor is in a closed state relative to the outside.

Illustratively, the number of the fixing members 13 may be four. The four fixing pieces 13 are divided into two groups, each group includes two fixing pieces 13, the two groups of fixing pieces 13 are respectively arranged in one-to-one correspondence with the two groups of arc-shaped bosses 12, and the two fixing pieces 13 of each group of fixing pieces 13 are respectively located at two ends of the corresponding group of arc-shaped bosses 12.

Illustratively, the fixing member 13 may be a bolt.

Optionally, a plate surface of the end cover body 1 has a plurality of ribs 14 along a radial direction thereof.

In the above implementation manner, by having a plurality of ribs 14 on the inner wall of the end cover body 1 along the radial direction thereof, the end cover body 1 can have sufficient strength and strength to support and fix the motor bearing and the rotating shaft when the bearing is installed.

Illustratively, the number of the reinforcing ribs 14 may be four, the four reinforcing ribs 14 are uniformly distributed on one plate surface of the end cover body 1, one ends of the four reinforcing ribs 14 are all connected to the outer peripheral wall of the inner ring of the annular mounting portion 11, and the other ends of the four reinforcing ribs 14 are all connected to the outer edge of the end cover body 1.

In the implementation manner, the four reinforcing ribs 14 are arranged, so that when the annular mounting part 11 is mounted together with the bearing, the annular mounting part 11 is ensured to have enough strength in the circumferential direction to support the bearing, and the end cover body 1 cannot be damaged due to strong rotation of the bearing.

Optionally, a plurality of heat dissipation holes 15 are formed in one surface of the end cap body 1.

In last implementation, be equipped with a plurality of louvres 15 at end cover body 1 inner wall, can be so that the inside heat of end cover body 1 gives off fast, avoid influencing its result of use because motor temperature is too high.

For example, there may be two heat dissipation holes 15, and both heat dissipation holes 15 are disposed between the outer edge of the end cover body 1 and one corresponding reinforcing rib 14.

Referring again to fig. 1, the outer edge of the other panel of the end closure body 1 also illustratively has a step 16.

In the above implementation, the step portion 16 is formed by continuously forming a stepped groove on the outer edge of the other plate surface of the end cover body 1, and the step portion 16 is provided to facilitate the end cover body 1 not to leave a finish-turning fillet when the end cover body 1 is machined and the end surface of the end cover body 1 is finish-turned, thereby improving the installation accuracy of the end cover body 1. Meanwhile, the concentricity of the end cover body 1 and the motor rotating shaft can be improved through the step part 16, and the installation precision and the positioning precision are improved.

Optionally, the end cover body 1 and the bearing seat 2 are of an integrally formed structure.

In the above implementation manner, the end cover body 1 and the bearing seat 2 are integrally formed, so that the forming efficiency can be improved, the forming is convenient, the matching degree between the end cover body 1 and the bearing seat 2 is better, and the mounting precision between the end cover body 1 and the bearing seat 2 is improved.

For example, the motor end cover provided by the embodiment of the disclosure can be formed by a cast iron process.

The operation of the motor end cover provided by the embodiment is briefly described as follows:

first, the motor end cover provided in this embodiment is a rear end cover, and the motor end cover is used to fix and support the motor shaft. That is, the motor end cap is used in cooperation with a bearing in a motor.

Then, when the bearing is fitted in the bearing housing 2 in the end cover of the motor, one side of the bearing abuts against the inner flange 23 of the bearing housing 2.

Then, carry into the riveting to the riveting side 21 of bearing frame 2, because the inner wall of this bearing frame 2 has recess 22, so, the riveting side 21 of bearing frame 2 is when receiving pressure emergence deformation, riveting side 21 can be close to recess 22 upper end in the shaft hole 20 of bearing frame 2 and take place to warp, can not extrude the inside bearing of bearing frame 2, so just also be difficult to extrude the bearing inner race, the ball raceway that just can not cause the bearing naturally just can not warp, the bearing is difficult impaired, and then guarantee the normal use of motor.

The above description is meant to be illustrative of the principles of the present disclosure and not to be taken in a limiting sense, and any modifications, equivalents, improvements and the like that are within the spirit and scope of the present disclosure are intended to be included therein.

Claims

1. The utility model provides a motor end cover, motor end cover includes end cover body (1) and bearing frame (2), bearing frame (2) are located the middle part of end cover body (1), its characterized in that, bearing frame (2) are cylindric, shaft hole (20) have in bearing frame (2), shaft hole (20) run through the relative both ends of bearing frame (2), just shaft hole (20) with bearing frame (2) are coaxial to be arranged, the first end in shaft hole (20) has the opening, the opening part in shaft hole (20) has riveting blank pressing (21), riveting blank pressing (21) are followed the axis circumference in shaft hole (20) arranges, the internal perisporium in shaft hole (20) is close to the position of riveting blank pressing (21) has recess (22), recess (22) are followed the axis circumference in shaft hole (20) arranges.

2. The motor end cover according to claim 1, wherein the inner peripheral wall of the rivet (21) has a rivet intrados surface (211), and the rivet intrados surface (211) is connected with the inner peripheral wall of the shaft hole (20).

3. The motor end cover according to claim 1, characterized in that the middle of the end cover body (1) is provided with an annular mounting part (11), the annular mounting part (11) is arranged outside the riveting edge (21), and a riveting gap (111) is formed between the inner peripheral wall of the annular mounting part (11) and the outer peripheral wall of the riveting edge (21).

4. The motor end cover according to claim 1, wherein the second end of the shaft hole (20) has an inner flange (23), the inner flange (23) being arranged coaxially with the shaft hole (20).

5. The motor end cover according to any one of claims 1-4, characterized in that a plate surface of the end cover body (1) is provided with a plurality of arc-shaped bosses (12) for connecting a centering motor shell, each arc-shaped boss (12) is concentric with the bearing seat (2), and the arc-shaped bosses (12) are arranged at intervals along the circumferential direction of the outer edge of the end cover body (1).

6. The motor end cover according to claim 5, characterized in that a plurality of fixing pieces (13) are further arranged on one plate surface of the end cover body (1), and each fixing piece (13) is located between two adjacent arc-shaped bosses (12).

7. An end cover for an electric motor according to any one of claims 1 to 4, wherein a plate surface of the end cover body (1) has a plurality of ribs (14) along a radial direction thereof.

8. The motor end cover according to any one of claims 1-4, wherein a plurality of heat dissipation holes (15) are formed on one surface of the end cover body (1).

9. A motor end cap according to any one of claims 1-4, characterised in that the riveting edge (21) is of soft metal.

10. The motor end cover according to any one of claims 1-4, characterized in that the end cover body (1) and the bearing seat (2) are of an integrally formed structure.