CN202231510U

CN202231510U - Improved structure of motor

Info

Publication number: CN202231510U
Application number: CN201120417512XU
Authority: CN
Inventors: 陆建华
Original assignee: 许晓华
Priority date: 2011-10-28
Filing date: 2011-10-28
Publication date: 2012-05-23
Anticipated expiration: 2021-10-28

Abstract

The utility model discloses an improved structure of a motor. The improved structure comprises a motor rotor (2), a first bearing (1) and a second bearing (5), wherein one end of an iron core (3) of the motor rotor (2) is propped against the first bearing, and an elastic device (7) is arranged between the other end of the iron core and the second bearing (5); one end of the elastic device is positioned on an end face approaching to one end of the second bearing of the iron core, and the other end of the elastic device is propped against an inner ring of the second bearing; the elastic device positioned on one end of the iron core utilizes own flexible property to generate a buffering function on the axial endplay of the iron core when the motor is operated; and the normal output efficiency of the motor is avoided to be influenced by rigid collision of the iron core and the bearing, and meanwhile, the service life of the iron core is prolonged.

Description

A kind of improvement structure of motor

Technical field

The utility model relates to a kind of improvement mechanism of motor.

Background technology

Rotor comprises iron core, and the iron core both sides are provided with bearing, and bearing fixing is on electric motor end cap, and iron core is located between two bearings.In assembling process, can form a little gap between bearing and the iron core, when motor moves; Rotor high-speed rotates; The bearing generation rigid collision at axial endplay and two ends takes place in output shaft and iron core easily, influences the running of rotor; And then influence the delivery efficiency of motor moreover the useful life that also can reduce iron core.

The utility model content

The technical problem that the present invention will solve provides a kind of improvement mechanism of motor, can effectively avoid the rigid collision between the iron core and bearing in the motor operation course.

For solving the problems of the technologies described above; The technical scheme that the utility model adopts is: a kind of improvement mechanism of motor; Comprise rotor, clutch shaft bearing and second bearing, iron core one end of rotor is against on the clutch shaft bearing, is provided with elastic device between the said iron core other end and second bearing; One end of elastic device is positioned on the end end face of iron core near second bearing, and the other end of elastic device is against on the inner ring of second bearing.The elastic device that is positioned at iron core one end utilizes the telescopicing performance of self; When motor moves; Axial endplay to iron core has produced pooling feature, has avoided iron core and bearing generation rigid collision and influences the normal delivery efficiency of motor, the useful life of having improved iron core simultaneously.

Further, said elastic device is first spring, and first spring housing is in the rotating shaft of rotor.Said first spring produces elastic thrust along the shaft axis direction to both sides, the axial endplay that the buffering iron core produces when motor moves.

Further, said iron core is provided with first location structure of location first spring, one end near an end end face of second bearing.On the iron core end face, spring is set bit architecture, effectively limit the spring energized object of first spring, more efficiently bring into play the elastic force effect of first spring.

Further, said first location structure is first groove, said first groove and first spring near iron core an end corresponding.Said first spring is positioned in first groove, with the activity and the elastic force zone of action of restraining spring, effectively brings into play elastic effect.

Further, said first location structure is first boss, said first boss and first spring near iron core an end corresponding.Said first spring is positioned on first boss, with the activity and the elastic force zone of action of restraining spring, effectively brings into play elastic effect.

Further, said elastic device comprises second spring that at least one circumferentially distributes along rotating shaft, and the inner ring of second bearing is along second location structure that is provided with location second spring, one end in the projection of rotor axis on iron core.Said second spring is positioned at the inner ring of second bearing along on second location structure in the projection of rotor axis on iron core; The elastic thrust that second spring produces can play the effect of buffering iron core axial endplay; Elastic acting force only acts on second bearing inner race simultaneously, guarantees that the elastic acting force of second spring has obtained effective performance.

Further, said second location structure is second groove, said second groove and second spring near iron core an end corresponding.Said second spring is positioned in second groove, with the activity and the elastic force zone of action of restraining spring, effectively brings into play elastic effect.

Further, said second location structure is second boss, said second boss and second spring near iron core an end corresponding.Said second spring is located on second boss, with the activity and the elastic force zone of action of restraining spring, effectively brings into play elastic effect.

The utility model adopts elastic device; Its beneficial effect is: the elastic device that is positioned at iron core one end utilizes the telescopicing performance of self; When motor moves; Axial endplay to iron core has produced pooling feature, has avoided iron core and bearing generation rigid collision and influences the normal delivery efficiency of motor, the useful life of having improved iron core simultaneously.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further specified:

Fig. 1 is the structural representation of a kind of embodiment of the utility model;

Fig. 2 is the structural representation of second kind of embodiment of the utility model;

Fig. 3 is the structural representation of the third embodiment of the utility model;

Fig. 4 is the enlarged drawing of I among Fig. 3;

Fig. 5 is the structural representation of the 4th kind of embodiment of the utility model;

Fig. 6 is the enlarged drawing of II among Fig. 5.

Embodiment

Embodiment one:

The structural representation of a kind of embodiment of the utility model as shown in Figure 1; A kind of improvement structure of motor; Comprise rotor 2, clutch shaft bearing 1 and second bearing 5, iron core 3 one ends of rotor 2 are against on the clutch shaft bearing, are provided with elastic device 7 between the said iron core other end and second bearing 5; One end of elastic device is positioned on the end end face of iron core near second bearing, and the other end of elastic device is against on the inner ring of second bearing.Elastic device utilizes the retractility of himself, and iron core is produced buffering effect when motor moves.

The said elastic device of present embodiment is first spring, and said first spring housing is in the rotating shaft 6 of rotor.

In the present embodiment, said iron core is provided with first location structure 4 of location first spring, one end near an end end face of second bearing.

In the present embodiment; Said first location structure is first groove; Said first groove and first spring near iron core an end corresponding; The first groove twisted rotary shaft ringwise, first spring, one end is stuck in first groove, the first spring other end is against on the inner ring of clutch shaft bearing and is enclosed within the rotating shaft simultaneously.

In the present embodiment, the preferred cylindrical spring of said first spring, corresponding first groove drop on second bearing inner race in iron core end on projection zone; When said first groove exceeds second bearing inner race and is projected in regional on the iron core end face; First spring is selected volute spring for use; First groove can be located at whole zone on the end face of iron core near second bearing; The big end of volute spring is positioned on the iron core, and the small end of volute spring is against on the inner ring of second bearing.

Embodiment two:

As shown in Figure 2; Present embodiment and embodiment one difference are that said first location structure is first boss, and the first boss twisted rotary shaft ringwise; First spring, one end is enclosed within on first boss, and the first spring other end is against on the inner ring of first spring and is enclosed within the rotating shaft simultaneously.

In the present embodiment, the preferred cylindrical spring of said first spring, the first boss correspondence drops on second bearing inner race in iron core end on projection zone.When said first boss exceeds second bearing inner race and is projected in regional on the iron core end face; First spring is selected volute spring for use; First boss can be located at whole zone on the end face of iron core near second bearing; The big end of volute spring is positioned on the iron core, and the small end of volute spring is against on the inner ring of second bearing.

Embodiment three:

Like Fig. 3, shown in Figure 4; Present embodiment and embodiment one difference are; Said elastic device comprises two second springs that circumferentially distribute along rotating shaft, and the inner ring of second bearing is along second location structure 8 that is provided with location second spring, one end in the projection of rotor axis on iron core.Second spring is positioned at along on the rotating shaft circumferential position, and second spring, one end is positioned on the iron core, and the second spring other end is against on the inner ring of second bearing.

Said second location structure 8 is second groove, and second spring, one end is positioned in second groove, and the second spring other end is against on the spring inner ring.

Second groove described in the present embodiment can be two, also can be one, can also be three or more than three.The preferred cylindrical spring of described second spring certainly acts under the prerequisite on second bearing inner race satisfying the end of selected spring near second bearing, also can select volute spring or other springs of little tapering for use.

Embodiment four:

Like Fig. 5, shown in Figure 6, present embodiment and embodiment three differences are that said second location structure 8 is second boss, and second spring, one end is positioned on second boss, and the second spring other end is against on the spring inner ring.

The preferred cylindrical spring of second spring in the present embodiment acts under the prerequisite on second bearing inner race satisfying the end of selected spring near second bearing, and second spring also can be selected volute spring or other springs of little tapering for use.

Except that above-mentioned preferred embodiment; The utility model also has other execution mode; Those skilled in the art can make various changes and distortion according to the utility model, only otherwise break away from the spirit of the utility model, all should belong to the defined scope of the utility model accompanying claims.

Claims

1. the improvement structure of a motor; Comprise rotor (2), clutch shaft bearing (1) and second bearing (5); Iron core (3) one ends of rotor (2) are against on the clutch shaft bearing; It is characterized in that: be provided with elastic device (7) between the said iron core other end and second bearing (5), an end of elastic device is positioned on the end end face of iron core near second bearing, and the other end of elastic device is against on the inner ring of second bearing.

2. the improvement structure of a kind of motor according to claim 1, it is characterized in that: said elastic device is first spring, said first spring housing is in the rotating shaft (6) of rotor.

3. the improvement structure of a kind of motor according to claim 1 and 2 is characterized in that: said iron core is provided with first location structure (4) of location first spring, one end near an end end face of second bearing.

4. the improvement structure of a kind of motor according to claim 3, it is characterized in that: said first location structure is first groove, said first groove and first spring near iron core an end corresponding.

5. the improvement structure of a kind of motor according to claim 3, it is characterized in that: said first location structure is first boss, said first boss and first spring near iron core an end corresponding.

6. the improvement structure of a kind of motor according to claim 1; It is characterized in that: said elastic device comprises second spring that at least one circumferentially distributes along rotating shaft, and the inner ring of second bearing is along second location structure (8) that is provided with location second spring, one end in the projection of rotor axis on iron core.

7. the improvement structure of a kind of motor according to claim 6, it is characterized in that: said second location structure (8) is second groove, said second groove and second spring near iron core an end corresponding.

8. the improvement structure of a kind of motor according to claim 6, it is characterized in that: said second location structure is second boss, said second boss and second spring near iron core an end corresponding.