CN203312969U

CN203312969U - End-cover mechanism of motor

Info

Publication number: CN203312969U
Application number: CN2013200980072U
Authority: CN
Inventors: 邢剑杰
Original assignee: Shengzhou Jing Da Electric Machine Co Ltd
Current assignee: Shengzhou Jing Da Electric Machine Co Ltd
Priority date: 2013-03-04
Filing date: 2013-03-04
Publication date: 2013-11-27
Anticipated expiration: 2023-03-04

Abstract

The utility model discloses an end-cover mechanism of a motor. The end-cover mechanism includes an end cover, a ball bearing and a bearing cover. The ball bearing is installed in a bearing chamber. The bearing cover is fixed on an opening of the bearing chamber. Strengthening ribs are arranged in the end cover. The height at which the strengthening ribs are connected with one end of the bearing chamber is level with the bearing chamber. Cylindrical groove holes are arranged in the inner wall of the bearing chamber and screw threads are arranged in the cylindrical groove holes. Expansion screws are connected with the bearing cover. The expansion screws are fixed in the cylindrical groove holes and are in contact with the outer wall of the ball bearing. Compared with the prior art, the end-cover mechanism of the motor has the advantages of being long in service life and stable in operation because the cylindrical groove holes are arranged in the inner wall of the bearing chamber and the expansion screws are fixed in the cylindrical groove holes and are in contact with the outer wall of the ball bearing so that when heat is generated in operation of the motor, the ball bearing is fixed in the bearing chamber more firmly because of the expansion effect of the expansion screws.

Description

A kind of end cover mechanism of motor

Technical field

The utility model relates to a kind of end cover mechanism of motor, belongs to the parts of motor.

Background technology

At present, on the end cap of most motors for fixing, that bearing is installed is convenient, usually at the end cap center, offer bearing chamber, ball bearing is arranged in bearing chamber, the outer wall of ball bearing directly contacts with the inwall of bearing chamber, due to the restriction of manufacturing process and mounting process, between ball bearing and bearing chamber, easily retains gap, while causing motor rotation, ball bearing is subjected to displacement in bearing.If things go on like this, be accompanied by the wearing and tearing of bearing chamber, gap, by increasing, produces larger eccentric throw while making motor rotation, cause the unstable of motor, and noise strengthens, and the useful life of having reduced motor, when serious, by motor damage.

The utility model content

The purpose of this utility model is to provide a kind of electric motor end cap mechanism for above-mentioned the deficiencies in the prior art, can prevent that ball bearing from producing displacement, increases the service life, and guarantees the motor even running.

For achieving the above object, the technical solution of the utility model is: a kind of end cover mechanism of motor, comprise end cap, ball bearing and bearing cap, the center of end cap offers bearing chamber, ball bearing is arranged in bearing chamber, bearing cap is fixed on the opening of bearing chamber, in end cap, be provided with reinforcement, the outer wall of bearing chamber is connected with reinforcement, the height of described reinforcement connection bearing chamber one end and bearing chamber maintain an equal level, on the inwall of bearing chamber, offer the cylindricality slotted eye, in the cylindricality slotted eye, be provided with screw thread, on bearing cap, be connected with swell fixture, described swell fixture is fixed in the cylindricality slotted eye and contacts with the outer wall of ball bearing.

As the further setting of such scheme, described swell fixture adopts polyethylene or polypropylene material to make.

The beneficial effects of the utility model are: compared with prior art, by the inwall at bearing chamber, offer the cylindricality slotted eye, swell fixture is fixed in the cylindricality slotted eye and contacts with the outer wall of ball bearing, when the motor operation produces heat, swell fixture is due to expansion, make ball bearing more firmly be fixed in bearing chamber, make and the utlity model has long service life, the advantage operated steadily.

The accompanying drawing explanation

Fig. 1 is explosive view of the present utility model;

Fig. 2 is front view of the present utility model;

Fig. 3 is the A-A cutaway view of Fig. 2.

In figure: 1, end cap, 2, ball bearing, 3, bearing cap, 4, bearing chamber, 5, reinforcement, 6, the cylindricality slotted eye, 7, screw thread, 8, swell fixture.

Embodiment

Below in conjunction with accompanying drawing, and in conjunction with the embodiments, the utility model is described further.

Embodiment:

As Fig. 1, Fig. 2, shown in Figure 3, the utility model comprises end cap 1, ball bearing 2 and bearing cap 3, the center of end cap 1 offers bearing chamber 4, ball bearing 2 is arranged in bearing chamber 4, bearing cap 3 is fixed on the opening of bearing chamber 4, in end cap 1, be provided with reinforcement 5, the outer wall of bearing chamber 4 is connected with reinforcement 5, the height of described reinforcement 5 connection bearing chamber 4 one ends and bearing chamber 4 maintain an equal level, on the inwall of bearing chamber 4, offer cylindricality slotted eye 6, in cylindricality slotted eye 6, be provided with screw thread 7, on bearing cap 3, be connected with swell fixture 8, described swell fixture 8 is fixed in cylindricality slotted eye 6 and contacts with the outer wall of ball bearing 2.

Described swell fixture 8 adopts polypropylene material to make.

Operation principle of the present utility model is: offer cylindricality slotted eye 6 by the inwall at bearing chamber 4, after swell fixture 8 and screw thread 7 combinations, be fixed in cylindricality slotted eye 6, because cylindricality slotted eye 6 is communicated with bearing chamber 4, making to have a part contacts with the outer wall of ball bearing 2, after the motor operation, ball bearing 2 will produce a large amount of heats, because the polypropylene material coefficient of expansion of swell fixture 8 is larger, swell fixture 8 expanded by heating, tighter with the outer wall laminating of ball bearing 2, thereby make ball bearing 2 more firmly be fixed in bearing chamber 4, prevent displacement, the interior reinforcement 5 that arranges of end cap 1, the outer wall of bearing chamber 4 is connected with reinforcement 5, bearing chamber 4 mechanical strengths after preventing from slotting descend, guarantee the robustness of end cap 1 structure.

Claims

1. the end cover mechanism of a motor, comprise end cap (1), ball bearing (2) and bearing cap (3), the center of end cap (1) offers bearing chamber (4), ball bearing (2) is arranged in bearing chamber (4), bearing cap (3) is fixed on the opening of bearing chamber (4), it is characterized in that: in end cap (1), be provided with reinforcement (5), the outer wall of bearing chamber (4) is connected with reinforcement (5), the height of described reinforcement (5) connection bearing chamber (4) one ends and bearing chamber (4) maintain an equal level, on the inwall of bearing chamber (4), offer cylindricality slotted eye (6), in cylindricality slotted eye (6), be provided with screw thread (7), on bearing cap (3), be connected with swell fixture (8), described swell fixture (8) is fixed in cylindricality slotted eye (6) and contacts with the outer wall of ball bearing (2).

2. the end cover mechanism of a kind of motor according to claim 1 is characterized in that: described swell fixture (8) adopts polyethylene or polypropylene material to make.