CN204304679U

CN204304679U - The external rotor electric machine of a kind of end cap and application thereof

Info

Publication number: CN204304679U
Application number: CN201420849809.7U
Authority: CN
Inventors: 付桂文
Original assignee: Zhongshan Broad Ocean Motor Co Ltd
Current assignee: Zhongshan Broad Ocean Motor Manufacturing Co Ltd; Zhongshan Broad Ocean Motor Co Ltd
Priority date: 2014-12-26
Filing date: 2014-12-26
Publication date: 2015-04-29
Anticipated expiration: 2024-12-26

Abstract

The utility model discloses the external rotor electric machine of a kind of end cap and application thereof, comprise end cap body and bearing, bearing chamber is offered in the middle of end cap body, also include bearing sheath, bearing sheath is sleeved on outside bearing and bearing sheath is nested is arranged on inside bearing chamber, bearing sheath is circumferentially with some lug bosses, lug boss in axial direction extends, lug boss is pressed between the internal face of bearing chamber and the outside wall surface of bearing, structure is simple, bearing easy for installation, firm, effectively reduces wearing and tearing and the noise of bearing.

Description

The external rotor electric machine of a kind of end cap and application thereof

Technical field:

The utility model relates to the external rotor electric machine of a kind of end cap and application thereof.

Background technology:

In external rotor electric machine, the bearing of motor is directly inside the nested bearing chamber being arranged on end cap, but owing to being that rigidity coordinates between bearing with bearing chamber, once mismate, be difficult to adjustment, bearing is made to be easy to cause wearing and tearing aggravation because of loosening, and after matching loose wearing and tearing, unfavorable to heat transfer, may make bearing because of friction surface temperature too high, on the other hand owing to being that rigidity coordinates and also can make its coaxiality error greatly between bearing with bearing chamber, there is stress concentration phenomenon, even occur the phenomenon that external rotor electric machine noise is large or stuck.

Summary of the invention:

The purpose of this utility model is to provide the external rotor electric machine of a kind of end cap and application thereof, and this motor end cap structure is simple, bearing easy for installation, firm, effectively reduces wearing and tearing and the noise of bearing;

This outer rotor motor structure is simple, the wearing and tearing of motor bearings and wear and tear little, runs more efficient, reliable.

The purpose of this utility model is achieved by following technical proposals.

A kind of end cap, comprise end cap body and bearing, bearing chamber is offered in the middle of end cap body, also include bearing sheath, bearing sheath is sleeved on outside bearing and bearing sheath is nested is arranged on inside bearing chamber, bearing sheath is circumferentially with some lug bosses, and lug boss in axial direction extends, and lug boss is pressed between the internal face of bearing chamber and the outside wall surface of bearing.

Bearing sheath described above comprises two flanges and is arranged on the ring-type wall between two flanges, and lug boss is arranged on ring-type wall.

Lug boss described above comprise the exterior protrusion that protrudes outward from ring-type wall and from ring-type wall toward projecting inward internal projection portion, exterior protrusion and circumference interval, internal projection portion are uniformly distributed, exterior protrusion is pressed on the internal face of bearing chamber, and internal projection portion is pressed in the outside wall surface of bearing.

Lug boss described above is strip.

Bearing sheath described above is the circulus of opening.

Described above stretches out some lugs toward inner side from the flange of bottom, and bearing is bearing on the end face of lug.

Described above is provided with packing ring in the bottom of bearing.

A kind of external rotor electric machine, comprise rotating shaft, stator module, outer rotor and end cap, down receiver is extended with in the middle of end cap, stator module is sleeved on outside receiver, outer rotor is nested in outside stator module, rotating shaft is positioned at inside receiver and rotating shaft one end and outer rotor link together, described end cap comprises end cap body and bearing, bearing chamber is offered in the middle of the end face of end cap body, also include bearing sheath, bearing sheath is sleeved on outside bearing and bearing sheath is nested is arranged on inside bearing chamber, bearing sheath is circumferentially with some lug bosses, lug boss in axial direction extends, lug boss is pressed between the internal face of bearing chamber and the outside wall surface of bearing

The utility model compared with prior art, has following effect:

1) on bearing sheath, some lug bosses are circumferentially with, lug boss in axial direction extends, lug boss is pressed between the internal face of bearing chamber and the outside wall surface of bearing, the installation of bearing becomes convenient, firm, it is linear contact lay between bearing and bearing chamber, effectively reduce wearing and tearing and the noise of bearing, reduce loosening of bearing;

2) exterior protrusion is pressed on the internal face of bearing chamber, and internal projection portion is pressed in the outside wall surface of bearing, and structure is simple, make the installation of bearing more firm, be linear contact lay between bearing and bearing chamber simultaneously, effectively reduce wearing and tearing and the noise of bearing, reduce loosening of bearing;

3) bearing sheath is the circulus of opening, and structure is simple, has the installation of the convenient bearing of flexible circulus, reduces the friction between bearing and bearing chamber, loss;

4) from the flange of bottom, stretch out some lugs toward inner side, bearing is bearing on the end face of lug, and structure is simple, conveniently bearing sheath is sleeved on outside bearing.

Accompanying drawing illustrates:

Fig. 1 is the stereogram of electric motor end cap in embodiment;

Fig. 2 is the exploded view of electric motor end cap in embodiment;

Fig. 3 is the top view of electric motor end cap in embodiment;

Fig. 4 is A-A sectional view in Fig. 3;

Fig. 5 is B-B sectional view in Fig. 4;

Fig. 6 is C-C partial enlarged drawing in Fig. 5;

Fig. 7 is the stereogram of embodiment middle (center) bearing sheath;

Fig. 8 is the stereogram of external rotor electric machine in embodiment;

Fig. 9 is the top view of external rotor electric machine in embodiment;

Figure 10 is D-D sectional view in Fig. 9.

Detailed description of the invention:

Also by reference to the accompanying drawings the utility model is described in further detail below by specific embodiment.

Embodiment one: as shown in Figures 1 to 7, the present embodiment is a kind of end cap, comprise end cap body 1 and bearing 2, bearing chamber 11 is offered in the middle of end cap body 1, also include bearing sheath 3, bearing sheath 3 to be sleeved on outside bearing 2 and bearing sheath 3 is nested is arranged on inside bearing chamber 11, and bearing sheath 3 is circumferentially with some lug bosses 31, lug boss 31 in axial direction extends, and lug boss 31 is pressed between the internal face of bearing chamber 11 and the outside wall surface of bearing 2.The ring-type wall 33 that bearing sheath 3 comprises two flanges 32 and is arranged between two flanges 32, lug boss 31 is arranged on ring-type wall 33.Lug boss 31 comprise the exterior protrusion 311 that protrudes outward from ring-type wall 33 and from ring-type wall 33 toward projecting inward internal projection portion 312, the circumferential interval of exterior protrusion 311 and internal projection portion 312 is uniformly distributed, exterior protrusion 311 is pressed on the internal face of bearing chamber 11, and internal projection portion 312 is pressed in the outside wall surface of bearing 2.Described lug boss 31 is strips.Described bearing sheath 3 is circuluses of opening.From the flange 32 of bottom, stretch out some lugs 321 toward inner side, bearing 2 is bearing on the end face of lug 321.In the bottom of bearing 2, packing ring 8 is installed.

Embodiment two: as shown in Figures 1 to 10, the present embodiment is a kind of external rotor electric machine, comprise rotating shaft 4, stator module 5, outer rotor 6 and end cap, receiver 7 is down extended with in the middle of end cap, stator module 5 is sleeved on outside receiver 7, outer rotor 6 is nested in outside stator module 5, rotating shaft 4 is positioned at inside receiver 7 and rotating shaft 4 one end and outer rotor 6 links together, described end cap comprises end cap body 1 and bearing 2, bearing chamber 11 is offered in the middle of the end face of end cap body 1, also include bearing sheath 3, bearing sheath 3 to be sleeved on outside bearing 2 and bearing sheath 3 is nested is arranged on inside bearing chamber 11, bearing sheath 3 is circumferentially with some lug bosses 31, lug boss 31 in axial direction extends, lug boss 31 is pressed between the internal face of bearing chamber 11 and the outside wall surface of bearing 2.

Above embodiment is better embodiment of the present invention; but embodiments of the present invention are not limited thereto; other are any do not deviate from Spirit Essence of the present invention and principle under do change, modification, substitute, combine, simplify; be the substitute mode of equivalence, be included within protection scope of the present invention.

Claims

1. an end cap, comprise end cap body (1) and bearing (2), bearing chamber (11) is offered in the middle of end cap body (1), it is characterized in that: also include bearing sheath (3), bearing sheath (3) to be sleeved on outside bearing (2) and bearing sheath (3) is nested is arranged on bearing chamber (11) the inside, bearing sheath (3) is circumferentially with some lug bosses (31), lug boss (31) in axial direction extends, lug boss (31) is pressed between the internal face of bearing chamber (11) and the outside wall surface of bearing (2).

2. a kind of end cap according to claim 1, it is characterized in that: described bearing sheath (3) comprises two flanges (32) and is arranged on the ring-type wall (33) between two flanges (32), and lug boss (31) is arranged on ring-type wall (33).

3. a kind of end cap according to claim 2, it is characterized in that: described lug boss (31) comprise the exterior protrusion (311) that protrudes outward from ring-type wall (33) and from ring-type wall (33) toward projecting inward internal projection portion (312), exterior protrusion (311) and internal projection portion (312) circumferential interval are uniformly distributed, exterior protrusion (311) is pressed on the internal face of bearing chamber (11), and internal projection portion (312) are pressed in the outside wall surface of bearing (2).

4. a kind of end cap according to claim 1 or 2 or 3, is characterized in that: described lug boss (31) is strip.

5. a kind of end cap according to claim 1 or 2 or 3, is characterized in that: described bearing sheath (3) is the circulus of opening.

6. a kind of end cap according to Claims 2 or 3, is characterized in that: from the flange (32) of bottom, stretch out some lugs (321) toward inner side, bearing (2) is bearing on the end face of lug (321).

7. a kind of end cap according to claim 1 or 2 or 3, is characterized in that: be provided with packing ring (8) in the bottom of bearing (2).

8. an external rotor electric machine, comprise rotating shaft (4), stator module (5), outer rotor (6) and end cap, receiver (7) is down extended with in the middle of end cap, stator module (5) is sleeved on receiver (7) outside, outer rotor (6) is nested in stator module (5) outside, rotating shaft (4) is positioned at receiver (7) the inside and rotating shaft (4) one end and outer rotor (6) link together, described end cap comprises end cap body (1) and bearing (2), bearing chamber (11) is offered in the middle of the end face of end cap body (1), it is characterized in that: also include bearing sheath (3), bearing sheath (3) to be sleeved on outside bearing (2) and bearing sheath (3) is nested is arranged on bearing chamber (11) the inside, bearing sheath (3) is circumferentially with some lug bosses (31), lug boss (31) in axial direction extends, lug boss (31) is pressed between the internal face of bearing chamber (11) and the outside wall surface of bearing (2).

9. a kind of external rotor electric machine according to claim 8, is characterized in that: described end cap is the end cap described by any one of claim 2 to 7.