CN202474502U

CN202474502U - Reversing device

Info

Publication number: CN202474502U
Application number: CN201220057491XU
Authority: CN
Inventors: 张云峰
Original assignee: ANGU ELECTRICAL APPLIANCES Co Ltd SUZHOU
Current assignee: ANGU ELECTRICAL APPLIANCES Co Ltd SUZHOU
Priority date: 2012-02-22
Filing date: 2012-02-22
Publication date: 2012-10-03
Anticipated expiration: 2022-02-22

Abstract

The utility model discloses a reversing device comprising an inner liner, a reversing sheet and a mica sheet. Bakelite powder is filled between the inner liner and the reversing sheet and between the inner liner and the mica sheet; fastening rings are arranged at the two sides of the reversing sheet in the axial direction and the cross section of each fastening ring is L-shaped; with the adoption of the reversing device disclosed by the utility model, the fastening rings are added into the bakelite powder and the L-shaped cross sections are adopted so as to improve the transverse tensile strength of the fastening rings; and meanwhile, the reversing device provided with the fastening rings adopts the fastening rings so that the contact area between the fastening rings and the bakelite powder is enlarged; when the fastening rings bear a centrifugal force, the compactness of the fastening rings and the bakelite powder is increased through tensioning the transverse structure, and the mechanical performance of the reversing device is improved.

Description

A kind of commutator

Technical field

The utility model relates to a kind of commutator, is specifically related to the improvement of structure on a kind of commutator.

Background technology

Commutator is the critical piece in the motor, and it is mainly by the peripheral bakelite main body of neck bush, neck bush be arranged in the peripheral copper bar commutator segment of bakelite main body and form.Inner glass fiber ring commonly used of reinforced commutator or iron hoop are made, and to improve its mechanical performance, are simple toroidal.Because hand held electric tool often has impact (like electric impact drill; Electric angle grinder etc.); And directly take operation by the operator; Therefore fail safe and the mechanical property ratio household electrical appliance to commutator have higher requirement with commutator, and the common reinforcing ring that is used for hand held electric tool all is an iron hoop, improves its mechanical performance and explosion-proof performance.

But present existing iron hoop structure is owing to be directly to consign to the commutator manufacturer behind the iron plate blanking to use, and intensity is not high, is used in all therefore that requirement is not high, on the small-power, slow-revving motor; But for the high-revolving motor of the high power more than the 2300W, the structure of original iron hoop just can not satisfy the requirement of motor, and motor in the running; Because action of centrifugal force; The error requirement that will be above standard causes spark big, and then influences the motor design life-span between commutator segment.

Therefore, a kind ofly can be applicable to the high power pot motor, strengthen mechanical performance, improve security performance, demand urgently occurring with this commutator that prolongs motor useful life.

The utility model content

For solving the problems of the technologies described above, the purpose of the utility model is to provide a kind of can be applicable to the high power pot motor, strengthens mechanical performance, improves security performance, prolongs the motor commutator in useful life with this.

For achieving the above object; The technical scheme of the utility model is following: a kind of commutator; Comprise neck bush, commutator segment and mica sheet; Between said neck bush and said commutator segment and said mica sheet, be filled with phenolic moulding powder, be provided with reinforcing ring in said commutator shaft to both sides, said reinforcing ring cross section is L-shaped.

Preferably, said commutator segment and said mica sheet are staggered and form the commutator outer toroid.

Preferably, said reinforcing ring is a rigid structure.

Preferably, said commutator segment is I-shaped.

Preferably, said commutator segment is wedge near the end face both sides of said neck bush.

Preferably, said reinforcing ring and said commutator segment and said mica sheet are complementary.

Pass through technique scheme; The beneficial effect of the utility model technical scheme is: a kind of commutator; Comprise neck bush, commutator segment and mica sheet; Between said neck bush and said commutator segment and said mica sheet, be filled with phenolic moulding powder, be provided with reinforcing ring in said commutator shaft to both sides, said reinforcing ring cross section is L-shaped; Adopt the commutator that the utility model provided,, utilize L shaped cross section, improved the transverse tensile strength of reinforcing ring itself with this through in phenolic moulding powder, adding reinforcing ring; Simultaneously, for the commutator that said reinforcing ring is housed, adopt this kind reinforcing ring; Increased the contact area of reinforcing ring and said phenolic moulding powder, reinforcing ring is when bearing centrifugal force, through the tension of transversary; Increase the tightness of reinforcing ring and phenolic moulding powder, improved the mechanical performance of commutator.

Description of drawings

In order to be illustrated more clearly in the technical scheme in the utility model embodiment technology; To do to introduce simply to the accompanying drawing of required use in the embodiment technical description below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

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

Fig. 2 is the cutaway view of the A-A of a kind of commutator embodiment 1 of the utility model;

Fig. 3 is the cutaway view of a kind of commutator embodiment 1 reinforcing ring of the utility model;

Fig. 4 is the cutaway view of the A-A of a kind of commutator embodiment 2 of the utility model.

The represented corresponding component title of numeral among the figure:

1. neck bush 2. commutator segments 3. mica sheets 4. phenolic moulding powder 5. reinforcing rings.

Embodiment

To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.

The utility model provides a kind of can be applicable to the high power pot motor, strengthens mechanical performance, improves security performance, prolongs the motor commutator in useful life with this.

Embodiment 1,

Like Fig. 1, like Fig. 2 and as shown in Figure 3; A kind of commutator; Comprise neck bush 1, commutator segment 2 and mica sheet 3, between said neck bush 1 and said commutator segment 2 and said mica sheet 3, be filled with phenolic moulding powder 4, be provided with reinforcing ring 5 to both sides in said commutator shaft; Said reinforcing ring 5 cross sections are L-shaped, and said reinforcing ring 5 is a rigid structure.

Because said reinforcing ring 5 is L-shaped, reinforcing ring 5 is when bearing centrifugal action, and the effect of transversary has just had embodiment, has increased the overall mechanical properties of commutator.

Said commutator segment 2 is staggered with said mica sheet 3 and forms the commutator outer toroid, and said commutator segment 2 is I-shaped, and said reinforcing ring 5 is complementary with said mica sheet 3 with said commutator segment 2.

In technique scheme; Behind drawing and forming, increase heat treatment again, its case hardness can reach HB450-550; The nonheat-treated common iron reinforcing ring that tensile strength is made much larger than present material, the hardness tensile strength of reinforcing ring commonly used more now are significantly improved.

Adopt the commutator that the utility model provided,, utilize L shaped cross section, improved the transverse tensile strength of reinforcing ring 5 itself with this through in phenolic moulding powder 4, adding reinforcing ring 5; Simultaneously; For the commutator that said reinforcing ring 5 is housed, adopt this kind reinforcing ring 5, increased the contact area of reinforcing ring 5 with said phenolic moulding powder 4; Reinforcing ring 5 is when bearing centrifugal force; Through the tension of transversary, increased the tightness of reinforcing ring 5 with phenolic moulding powder 4, improved the mechanical performance of commutator.

Embodiment 2,

As shown in Figure 4, all the other are same as the previously described embodiments, and difference is; Said commutator segment 2 is wedge near the end face both sides of said neck bush 1, under the situation that guarantees the commutator performance, reduces the quality of commutator segment 2; With this when the commutator high speed rotating; Reduce centrifugal force, reduced the failure rate of commutator, effectively prolonged the useful life of commutator.

Pass through technique scheme; The beneficial effect of the utility model technical scheme is: a kind of commutator; Comprise neck bush 1, commutator segment 2 and mica sheet 3; Between said neck bush 1 and said commutator segment 2 and said mica sheet 3, be filled with phenolic moulding powder 4, be provided with reinforcing ring 5 in said commutator shaft to both sides, said reinforcing ring 5 cross sections are L-shaped; Adopt the commutator that the utility model provided,, utilize L shaped cross section, improved the transverse tensile strength of reinforcing ring 5 itself with this through in phenolic moulding powder 4, adding reinforcing ring 5; Simultaneously; For the commutator that said reinforcing ring 5 is housed, adopt this kind reinforcing ring 5, increased the contact area of reinforcing ring 5 with said phenolic moulding powder 4; Reinforcing ring 5 is when bearing centrifugal force; Through the tension of transversary, increased the tightness of reinforcing ring 5 with phenolic moulding powder 4, improved the mechanical performance of commutator.

To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation of spirit that does not break away from the utility model or scope in other embodiments among this paper.Therefore, the utility model will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.

Claims

1. commutator; It is characterized in that, comprise neck bush, commutator segment and mica sheet, between said neck bush and said commutator segment and said mica sheet, be filled with phenolic moulding powder; Be provided with reinforcing ring in said commutator shaft to both sides, said reinforcing ring cross section is L-shaped.

2. commutator according to claim 1 is characterized in that, said commutator segment and said mica sheet are staggered and form the commutator outer toroid.

3. commutator according to claim 2 is characterized in that, said reinforcing ring is a rigid structure.

4. commutator according to claim 3 is characterized in that said commutator segment is I-shaped.

5. commutator according to claim 4 is characterized in that, said commutator segment is wedge near the end face both sides of said neck bush.

6. according to each described commutator of claim 1-5, it is characterized in that said reinforcing ring and said commutator segment and said mica sheet are complementary.