CN207766095U - A kind of synchronous motor of oiliness bearing and geared end contact structures - Google Patents

Abstract

The utility model discloses the synchronous motors of a kind of oiliness bearing and geared end contact structures, including casing, the central shaft being arranged in casing, the stator winding and rotor field spider being sequentially arranged on central shaft, magnet ring on rotor field spider, the gasket being arranged between rotor field spider and magnet ring, Z1 gears at magnet ring center are set, with the driving gear set of Z1 gear engaged transmissions, the powder metallurgical gear engaged with driving gear set, interference fit indentation powder metallurgical gear and the output shaft coaxial with powder metallurgical gear, the oiliness bearing that is sleeved on outside output shaft and the cover for being pressed together on oiliness bearing outside portion.Oiliness bearing end plane is contacted with gear plane circular arc line；Contact area is small, and moment of friction consumption is small, and motor is contributed greatly, improves 10 15% than traditional oiliness bearing and geared end contact structures, efficiency increases；Line contact friction makes noise of motor be greatly lowered；Electric efficiency increases, and respective material is reduced, and material cost reduces.

Description

A kind of synchronous motor of oiliness bearing and geared end contact structures

Technical field

This practical technique be related to claw-pole permanent magnet synchronize micromotor technical field, more particularly to a kind of oiliness bearing with The synchronous motor of geared end contact structures.

Background technology

There are the pairs of magnetic pole and magnet exciting coil obviously protruded, this excitation wire on permanent magnet claw pole formula synchronous motor salient pole type rotor After circle DC magnetizing electric current, the certain polarity of each magnetic pole, in the adjacent magnetic pole alternating poles N and the poles S.Hydroelectric generator, this The rotary speed of waterwheel is relatively low, and work is sent out again and again, and dynamotor number of poles is more, salient pole type technique simple in structure.Rise imperial electricity The machine small synchronous motor that is right also makes salient pole type mostly.Claw-pole permanent magnet synchronous motor microprocessor Design is brief：Lundell Magneto can control PMSM motors by using scalar or vector control technology.Rotor-position is understood for efficiently controlling PMSM motors are extremely important.The position of rotor is able to detect that by the Hall sensor or rotary encoder that are connected to motor It sets.These sensors are inputted for the feedback control system containing sensor.

In claw-pole permanent magnet synchronizes micromotor, traditional oiliness bearing has following ask with the geared end way of contact Topic：（1）Oiliness bearing end plane is contacted with gear plane annular surface；Contact area is big, and moment of friction consumption is big, and motor is caused to go out Power reduces, decreasing efficiency；（2）Large area friction causes noise of motor big, especially pot motor.

Utility model content

The purpose of this utility model be to provide it is a kind of it is reasonable for structure, reduce moment of friction oiliness bearing and geared end connect Touch the synchronous motor of structure.

To achieve the goals above, the technical solution that the utility model is taken is as follows：

A kind of synchronous motor of oiliness bearing and geared end contact structures, including casing, be arranged in casing Mandrel, the stator winding being sequentially arranged on central shaft and rotor field spider, are arranged in rotor the magnet ring on rotor field spider Gasket between holder and magnet ring, be arranged the Z1 gears at magnet ring center, with the driving gear set of Z1 gear engaged transmissions, with pass Powder metallurgical gear, interference fit indentation powder metallurgical gear and the output coaxial with powder metallurgical gear of moving gear group engagement Axis, the oiliness bearing being sleeved on outside output shaft and the cover for being pressed together on oiliness bearing outside portion；

The oiliness bearing on the end face of powder metallurgical gear with respect to being provided with annular protrusion；The annular protrusion it is transversal Face is plane circular arc, and the endpoint of plane circular arc is contacted with the end face of powder metallurgical gear at axial line.

The output shaft forms radial clearance fit with oiliness bearing as a further improvement of the utility model,；It is described Oiliness bearing is pressed into cover by interference fit.

The driving gear set includes four groups of gears as a further improvement of the utility model, is followed successively by and Z1 gears The 1# gear sets of engagement, with the 2# gear sets of 1# gear sets engaged transmission, with the 3# gear sets of 2# gear set engaged transmissions and point The 4# gear sets of 3# gear sets and powder metallurgical gear Nie He not connected.

Further include the shield being mounted on casing as a further improvement of the utility model,；The shield is using fire-retardant PBT materials make.

The good effect that the utility model generates is as follows：

The utility model is reasonable for structure, adds the structure that circular arc muscle is contacted with gear line in oiliness bearing end plane.(1) contain Oil bearing end plane is contacted with gear plane circular arc line；Contact area is small, and moment of friction consumption is small, and motor is contributed greatly, than tradition Oiliness bearing and geared end contact structures improve 10-15%, efficiency increases；(2) line contact friction makes noise of motor significantly It reduces；(3) electric efficiency increases, respective material（Copper wire）It reduces, material cost reduces.

Description of the drawings

Attached drawing 1 is the exploded perspective view of the utility model；

Attached drawing 2 is that the utility model oil-bearing structure assembles pre-structure schematic diagram；

Attached drawing 3 is structural schematic diagram after the assembly of the utility model oil-bearing structure；

Attached drawing 4 is the partial enlarged view in the portions A of Fig. 3.

In the accompanying drawings：

2 casings, 3 central shafts, 4 stator winding, 11 rotor field spiders, 13 gaskets, 14 magnet rings, 15 Z1 gears, 16 1# gears Group, 17 4# gear sets, 19 2# gear sets, 20 powder metallurgical gears, 21 output shafts, 22 3# gear sets, 23 covers, 24 oil-containings Bearing.

Specific implementation mode

Further details of narration is carried out to the utility model below in conjunction with attached drawing.

As shown in attached drawing 1-4, a kind of synchronous motor of oiliness bearing and geared end contact structures, including casing 2, set It sets the central shaft 3 in casing 2, the stator winding 4 being sequentially arranged on central shaft 3 and rotor field spider 11, be mounted on rotor branch Z1 gears at 14 center of magnet ring are arranged in magnet ring 14 on frame 11, the gasket 13 being arranged between rotor field spider 11 and magnet ring 14 15, it is pressed with the driving gear set of 15 engaged transmission of Z1 gears, the powder metallurgical gear 20 engaged with driving gear set, interference fit Enter powder metallurgical gear 20 and the output shaft 21 coaxial with powder metallurgical gear 20, the oiliness bearing that is sleeved on outside output shaft 21 24 and it is pressed together on the cover 23 of 24 outside portion of oiliness bearing；On end face of the oiliness bearing 24 with respect to powder metallurgical gear 20 It is provided with annular protrusion 30；The cross section of the annular protrusion 30 be plane circular arc, the endpoint of plane circular arc with it is powder metallurgy toothed The end face of wheel 20 is contacted at axial line.The output shaft 21 forms radial clearance fit with oiliness bearing 24；The oiliness bearing 24 are pressed into cover 23 by interference fit.The driving gear set includes four groups of gears, is followed successively by the 1# engaged with Z1 gears 15 Gear set 16, with the 2# gear sets 19 of the engaged transmission of 1# gear sets 16, with the 3# gear sets 22 of 19 engaged transmission of 2# gear sets and The 4# gear sets 17 of engagement connection 3# gear sets 22 and powder metallurgical gear 20 respectively.It further include the shield being mounted on casing 2 7；The shield 7 is made of flame-retardant PBT material.

The utility model is reasonable for structure, adds annular protrusion 30 and 20 line of powder metallurgical gear in 24 end plane of oiliness bearing The structure of contact.24 end plane of oiliness bearing is contacted with gear plane circular arc line；Contact area is small, and moment of friction consumption is small, electricity Machine is contributed greatly, improves 10-15% than traditional oiliness bearing and geared end contact structures, efficiency increases；Line contact friction makes electricity Machine noise is greatly lowered；Electric efficiency increases, respective material（Copper wire）It reduces, material cost reduces.

Embodiment described above is only the preferred embodiment of the utility model, and the not feasible implementation of the utility model It is exhaustive.For persons skilled in the art, it is made under the premise of without departing substantially from the utility model principle and spirit Any obvious change gone out, should all be contemplated as falling within the claims of the utility model.

Claims (4)

1. the synchronous motor of a kind of oiliness bearing and geared end contact structures, it is characterised in that：It includes casing（2）, set It sets in casing（2）Interior central shaft（3）, be sequentially arranged at central shaft（3）On stator winding（4）And rotor field spider（11）, peace Mounted in rotor field spider（11）On magnet ring（14）, be arranged in rotor field spider（11）With magnet ring（14）Between gasket（13）, setting In magnet ring（14）The Z1 gears at center（15）And Z1 gears（15）The driving gear set of engaged transmission is engaged with driving gear set Powder metallurgical gear（20）, interference fit indentation powder metallurgical gear（20）And and powder metallurgical gear（20）Coaxial output Axis（21）, be sleeved on output shaft（21）External oiliness bearing（24）And it is pressed together on oiliness bearing（24）The cover of outside portion （23）；

The oiliness bearing（24）Opposite powder metallurgical gear（20）End face on be provided with annular protrusion（30）；The convex annular It rises（30）Cross section be plane circular arc, the endpoint and powder metallurgical gear of plane circular arc（20）End face contacted at axial line.

2. the synchronous motor of a kind of oiliness bearing and geared end contact structures according to claim 1, feature exist In：The output shaft（21）With oiliness bearing（24）Form radial clearance fit；The oiliness bearing（24）Pass through interference fit It is pressed into cover（23）.

3. the synchronous motor of a kind of oiliness bearing and geared end contact structures according to claim 1, feature exist In：The driving gear set includes four groups of gears, is followed successively by and Z1 gears（15）The 1# gear sets of engagement（16）And 1# gear sets （16）The 2# gear sets of engaged transmission（19）And 2# gear sets（19）The 3# gear sets of engaged transmission（22）Engagement connection respectively 3# gear sets（22）With powder metallurgical gear（20）4# gear sets（17）.

4. the synchronous motor of a kind of oiliness bearing and geared end contact structures according to claim 1, feature exist In：Further include being mounted on casing（2）On shield（7）；The shield（7）It is made of flame-retardant PBT material.