CN203193422U

CN203193422U - Electrical isolating device of stator centralized Three-phase windings of permanent magnet brushless motor

Info

Publication number: CN203193422U
Application number: CN 201320079820
Authority: CN
Inventors: 钟侃生
Original assignee: DONGGUAN JIAHE MOTOR Co Ltd
Current assignee: DONGGUAN JIAHE MOTOR Co Ltd
Priority date: 2013-02-21
Filing date: 2013-02-21
Publication date: 2013-09-11
Anticipated expiration: 2023-02-21

Abstract

The utility model discloses an electrical isolating device of stator centralized Three-phase windings of a permanent magnet brushless motor. The electrical isolating device of the stator centralized Three-phase windings of the permanent magnet brushless motor comprises a main body and a first end plate used for isolating and fixing the windings at one end of a stator coil. The main body comprises a second end plate used for isolating and fixing the windings at the other end of the stator coil, and a plurality of isolating plates used for isolating the windings inside a stator groove at intervals; the plurality of isolating plates are arranged on the same surface of the second end plate, and the tail ends of the plurality of isolating plates are all fixedly connected with the first end plate. Therefore, the electrical isolating device of the stator centralized Three-phase windings of the permanent magnet brushless motor does not use a plastic packaging technology, does not need to use the thermosetting plastic and a special-purpose injection molding machine, enables the expensive machine equipment investment cost to be saved, the specification requirement of correlated parts materials and the manufacture quality and cost to be saved, and the reliability of motor stator semi-finished products to be improved, avoids the defects and manufacture risks possibly existing in the plastic packaging technology, and does not use the thermosetting plastic which is difficult to degrade and recycle, thereby according with the environmental protection requirements.

Description

The electricity isolation device of centralized three phase windings of permanent magnet brushless electromotor stator

Technical field

The utility model relates to the permanent magnet brushless electromotor art, refers in particular to the electricity isolation device of centralized three phase windings of a kind of permanent magnet brushless electromotor stator.

Background technology

Centralized winding on the stator core of permanent magnet DC brushless motor is divided into A, B, C three-phase.Have at least two phase windings to exist in the same groove of the stator core of motor the inside, also at least wherein two phase windings energising operation when electric motor normal working.For the concentrated winding of this pattern, generally do not do isolation processing at present; And for quality requirement and the higher occasion of reliability requirement, generally adopt plastic package process, make stator core become as a whole with winding.Particularly:

1. winding is not done the permanent magnet brushless electromotor of isolation processing.For the well-to-do motor in structure and space, this not isolation processing is feasible; But the motor for structure and space compactness, because the compactness in space, and the wire turn that in the middle of production reality, inevitably exists loosening degree to differ, the electric clearance of two phase windings of out of phase and creepage distance just seem smaller even can not meet very much the requirement of domestic or international safety like this.Empirical evidence, the meeting less than normal of electric clearance and creepage distance directly reduces turn-to-turn compressive resistance and the quality stability thereof of two-phase coil windings, there is the hidden danger of turn-to-turn short circuit in motor when long-time running, cause the reliability of motor to reduce and expection service life shortens, when serious in addition motor burn.

2. adopt the permanent magnet brushless electromotor of plastic package process.By plastic package process, the winding of motor and wire turn are injection-moulded in the plastic barrier between the winding, have guaranteed the turn-to-turn compressive resistance of coil windings, also winding in the groove and winding overhang are formed the fixing effect on the structure simultaneously.On the other hand, the thermoset plastics injection molding machine of the at first essential special purpose of plastic package process, equipment investment is bigger; Next technological requirement such as high temperature in order to cooperate injection moulding, injection pressure, chemical corrosion etc., the mechanical strength of the insulation enamelled coating of the enamelled wire of formation winding, chemical resistance and temperature resistant grade are essential to be improved; At last, when injection moulding process generation quality defect, whole field frame assembly generally is difficult to reprocess reuse, must scrap processing, so the technological requirement of product and quality cost are higher.

The utility model content

In view of this, the utility model is at the disappearance of prior art existence, its main purpose provides the electricity isolation device of centralized three phase windings of a kind of permanent magnet brushless electromotor stator, and it can effectively solve existing winding and not do that reliability that isolation processing causes motor easily reduces and expection service life shortens or winding adopts plastic package process to have the high problem of cost of goods manufactured.

For achieving the above object, the utility model adopts following technical scheme:

The electricity isolation device of centralized three phase windings of a kind of permanent magnet brushless electromotor stator, first end plate that includes main body and be used for isolation and fixed stator coils one end winding; This main body include one be used for to isolate and second end plate of fixed stator coils the other end winding and a plurality of for stator slot inside winding separately from division board, these a plurality of division boards are arranged on the same surface of second end plate, and the tail end of these a plurality of division boards is all fixedlyed connected with first end plate.

As a kind of preferred version, described a plurality of division boards evenly are arranged at intervals on second end plate and with second end plate is one-body molded and are connected.

As a kind of preferred version, the tail end of described each division board all extends joint pin, and this first end plate is provided with fixing hole accordingly, and this joint pin is plugged in the fixing hole.

As a kind of preferred version, described joint pin is fixed by mode and the first end plate welding of ultrasonic bonding.

As a kind of preferred version, described division board is six, and this first end plate is provided with six aforementioned fixation holes accordingly, and the joint pin on these six division boards is plugged in the corresponding fixing hole.

The utility model compared with prior art has tangible advantage and beneficial effect, particularly, and as shown from the above technical solution:

By utilize division board with the inner winding of stator slot separately from, two phase windings of out of phase and the electric clearance between the wire turn thereof are effectively guaranteed, two phase windings of out of phase and the creepage distance between the wire turn thereof are effectively prolonged, produce enough electric clearance and creepage distance between the winding of assurance out of phase; And, enough supports that the structural member that makes this device by suitable division board Thickness Design gives similar ribs effect to winding coil and the wire turn of each stator slot and fixing, by division board the loose turns that produces in the middle of the stator winding procedure for producing is carried out effective combing separation and fixing simultaneously, avoided the intersection contact of wire turn; And, by utilizing first end plate and second end plate end winding of stator coil and wire turn are surrounded, separate with the stator part of outside, realized sealing and isolate the end winding; The utility model does not use plastic package process, need not to use the injection molding machine of thermoset plastics and special purpose thereof, saved expensive machines equipment investment expense, the defective and manufacturing risk of having avoided plastic package process to exist, specification requirement and the workmanship cost of related components material have been reduced, improve the half-finished reliability of motor stator, do not used the thermoset plastics compliance with environmental protection requirements that is difficult to degrade and reclaims.

For more clearly setting forth architectural feature of the present utility model and effect, come the utility model is elaborated below in conjunction with accompanying drawing and specific embodiment.

Description of drawings

Fig. 1 is the assembling schematic perspective view of the preferred embodiment of the utility model;

Fig. 2 is the exploded view of the preferred embodiment of the utility model;

Fig. 3 is the enlarged diagram of main body in the preferred embodiment of the utility model;

Fig. 4 is the enlarged diagram of first end plate in the preferred embodiment of the utility model.

The accompanying drawing identifier declaration:

10, first end plate 11, fixing hole

20, main body 21, second end plate

22, division board 23, joint pin

30, stator.

Embodiment

Please refer to Fig. 1 to shown in Figure 4, the concrete structure that it has demonstrated the preferred embodiment of the utility model includes first end plate 10 and main body 20.

This first end plate 10 is used for isolating and fixed stator 30 coils one end winding.

As shown in Figure 3, this main body 20 include one be used for to isolate and second end plate 21 of fixed stator 30 coil the other end windings and a plurality of for stator 30 grooves inside winding separately from division board 22, these a plurality of division boards 22 are arranged on the same surface of second end plate 21, and the tail end of these a plurality of division boards 22 is all fixedlyed connected with first end plate 10; Specifically say, in the present embodiment, these a plurality of division boards 22 evenly be arranged at intervals on second end plate 21 and with 21 one-body molded connections of second end plate, the tail end of this each division board 22 all extends joint pin 23, this first end plate 10 is provided with fixing hole 11 accordingly, this joint pin 23 is plugged in the fixing hole 11, and, this joint pin 23 is fixed by mode and 10 weldings of first end plate of ultrasonic bonding, to guarantee that motor is subjected to electromagnetic force effect and thermal shock and does the time spent and can not get loose in running; And in the present embodiment, this division board 22 is six, and this first end plate 10 is provided with six aforementioned fixation holes 11 accordingly, and the joint pin 23 on these six division boards 22 is plugged in the corresponding fixing hole 11.

The assembling process that present embodiment is described in detail in detail is as follows:

During assembling, earlier will these a plurality of division boards 22 pass the groove of stator 30 correspondences and winding is isolated separately, after these a plurality of division boards 22 were in place, this second end plate 21 was isolated stator 30 coil the other end windings and is fixing; Then, six fixing holes 11 on first end plate 10 are aimed at corresponding joint pin 23, and six joint pins 23 on the division board 22 are pressed in six fixing holes 11 of first end plate 10, thereby realize that stator 30, first end plate 10 and main body 20 that coiling is finished are assembled together, the assembling signal as shown in Figure 1.

Design focal point of the present utility model is: by utilize division board with the inner winding of stator slot separately from, two phase windings of out of phase and the electric clearance between the wire turn thereof are effectively guaranteed, two phase windings of out of phase and the creepage distance between the wire turn thereof are effectively prolonged, produce enough electric clearance and creepage distance between the winding of assurance out of phase; And, enough supports that the structural member that makes this device by suitable division board Thickness Design gives similar ribs effect to winding coil and the wire turn of each stator slot and fixing, by division board the loose turns that produces in the middle of the stator winding procedure for producing is carried out effective combing separation and fixing simultaneously, avoided the intersection contact of wire turn; And, by utilizing first end plate and second end plate end winding of stator coil and wire turn are surrounded, separate with the stator part of outside, realized sealing and isolate the end winding; The utility model does not use plastic package process, need not to use the injection molding machine of thermoset plastics and special purpose thereof, saved expensive machines equipment investment expense, the defective and manufacturing risk of having avoided plastic package process to exist, specification requirement and the workmanship cost of related components material have been reduced, improve the half-finished reliability of motor stator, do not used the thermoset plastics compliance with environmental protection requirements that is difficult to degrade and reclaims.

The above, it only is preferred embodiment of the present utility model, be not that technical scope of the present utility model is imposed any restrictions, so every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any trickle modification, equivalent variations and modification that above embodiment does.

Claims

1. the electricity isolation device of centralized three phase windings of permanent magnet brushless electromotor stator is characterized in that: first end plate that includes main body and be used for isolation and fixed stator coils one end winding; This main body include one be used for to isolate and second end plate of fixed stator coils the other end winding and a plurality of for stator slot inside winding separately from division board, these a plurality of division boards are arranged on the same surface of second end plate, and the tail end of these a plurality of division boards is all fixedlyed connected with first end plate.

2. the electricity isolation device of centralized three phase windings of permanent magnet brushless electromotor stator according to claim 1, it is characterized in that: described a plurality of division boards evenly are arranged at intervals on second end plate and with second end plate is one-body molded and are connected.

3. the electricity isolation device of centralized three phase windings of permanent magnet brushless electromotor stator according to claim 1, it is characterized in that: the tail end of described each division board all extends joint pin, this first end plate is provided with fixing hole accordingly, and this joint pin is plugged in the fixing hole.

4. the electricity isolation device of centralized three phase windings of permanent magnet brushless electromotor stator according to claim 3, it is characterized in that: described joint pin is fixed by mode and the first end plate welding of ultrasonic bonding.

5. the electricity isolation device of centralized three phase windings of permanent magnet brushless electromotor stator according to claim 3, it is characterized in that: described division board is six, this first end plate is provided with six aforementioned fixation holes accordingly, and the joint pin on these six division boards is plugged in the corresponding fixing hole.