CN102904376B - Transmission buffer type wiper motor and transmission bolster thereof installation method is set - Google Patents
Transmission buffer type wiper motor and transmission bolster thereof installation method is set Download PDFInfo
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- CN102904376B CN102904376B CN201210384311.3A CN201210384311A CN102904376B CN 102904376 B CN102904376 B CN 102904376B CN 201210384311 A CN201210384311 A CN 201210384311A CN 102904376 B CN102904376 B CN 102904376B
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Abstract
A kind of transmission buffer type wiper motor, comprise motor body assembly, reduction box assembly and circuit board module, split washer, spacer, rolling bearing, fixing back-up ring are housed successively on the armature shaft of motor body assembly and in the deceleration box of reduction box assembly, and this rolling bearing blocks by bearing fixed card ring fixing.On described armature shaft and between spacer and rolling bearing and between fixing back-up ring and rolling bearing, rubber buffer adjusting ring is all housed.Its transmission bolster installation method is set: the right-hand member of armature shaft has been installed commutator, armature winding, armature core and has been mounted with back-up ring, then the rubber buffer adjusting ring on right side is inserted in armature shaft, this armature shaft is inserted in the rolling bearing endoporus be fixed in deceleration box, successively put into rubber buffer adjusting ring and the spacer in left side again, finally split washer is snapped in armature shaft groove.The present invention makes armature shaft worm screw--and Helical gear Transmission pair reduces vibrations and impacts, and reduces motor oscillating and noise, improves performance and the life-span of motor.
Description
Technical field
What the present invention relates to a kind of motor and transmission bolster thereof arranges installation method.
Background technology
Vehicle windowpane electric water scraper (abbreviation wiper) is by materials such as rainwater, frost and snow and dusts on wiper motor driving, energy wiper removing automobile window glass outer surface.Wherein, wiper motor with deceleration device by the crank handle turns on its output shaft by connecting rod--the connecting rod mechanism movement that rocking bar forms, and drive the left and right floating rule be fixed on two output shafts to swing up and down, make the rubber Wiper blade be arranged on left and right floating rule do corresponding left and right wiper motion.The transmission of the wiper motor of this band deceleration device is armature shaft worm screw--helical gear engagement system, when the reciprocating motion of one-period done by wiper, worm screw alternately can be subject to the axial force in left and right two directions, due to armature shaft worm screw--there is gap between the engagement of Helical gear Transmission pair, and there is gap between worm screw armature shaft assembling and positioning part, therefore comparatively big bang and impact can be produced when wiper motor works, increase vibration and the noise of wiper motor.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, and the vibrations that are subject to during a kind of work are provided and impact the lower transmission buffer type wiper motor of noise that is all less, that produce and transmission bolster thereof installation method is set.
Object of the present invention is achieved through the following technical solutions: a kind of transmission buffer type wiper motor, comprise motor body assembly, reduction box assembly and circuit board module, wherein reduction box assembly is made up of deceleration box, helical gear, motor body assembly is made up of commutator, armature winding, armature core, magnetic shoe, casing, armature shaft, split washer, spacer, rolling bearing, fixing back-up ring are housed successively on the armature shaft of described motor body assembly and in the deceleration box of reduction box assembly, and this rolling bearing blocks by bearing fixed card ring fixing; On described armature shaft and between spacer and rolling bearing and between fixing back-up ring and rolling bearing, rubber buffer adjusting ring is all housed; Described split washer, spacer, rolling bearing, fixing back-up ring and rubber buffer adjusting ring form the transmission bolster of this wiper motor; The assembling magnitude of interference of described rubber buffer adjusting ring is following three groups of data sums: first group of data is: square root sum square of the tolerance value of Related Dimension Chain, and Related Dimension Chain comprises groove size, the width dimensions of rolling bearing, the size of spacer, the width dimensions of split washer, the groove size of split washer place armature shaft of the C section size of armature shaft, the width dimensions fixing back-up ring, fixing back-up ring place armature shaft; Second group of data is: armature shaft worm screw--maximum engagement backlash during the engagement of Helical gear Transmission pair; 3rd group of data are: pretightning force coefficient is multiplied by armature shaft worm screw or helical gear normal module.
A kind of installation method that arranges with the transmission bolster of described transmission buffer type wiper motor is: the right-hand member of described armature shaft is installed commutator, armature winding, armature core and is mounted with back-up ring, then the rubber buffer adjusting ring on right side is inserted in armature shaft, this armature shaft is inserted in the rolling bearing endoporus be fixed in deceleration box, successively put into rubber buffer adjusting ring and the spacer in left side again, finally split washer is snapped in the groove of armature shaft.
After adopting the present invention, by the cushioning effect of split washer, assembling between rolling bearing and fixing back-up ring and two rubber buffer adjusting rings, decrease armature shaft worm screw--the gap that may exist between the gap existed between the engagement of Helical gear Transmission pair and armature shaft assembling and positioning part, make wiper motor operationally, armature shaft worm screw--Helical gear Transmission pair reduces vibrations and impacts, the vibration of remarkable reduction motor and noise, improve performance and the life-span of wiper motor.Highly versatile of the present invention, easy for installation, operating efficiency is high, and input cost is low, has significant technological progress.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and execution mode, the present invention is described in further detail.
Fig. 1 is the mounting structure schematic diagram of transmission buffer type wiper motor of the present invention.
Fig. 2 is the assembly structure figure on the armature shaft of motor body assembly in Fig. 1.
Fig. 3 is the transmission buffer unit installation diagram in Fig. 1.
Fig. 4 is the deformation pattern of rubber buffer adjusting ring on armature shaft when left-hand is stressed.
Fig. 5 is the deformation pattern of rubber buffer adjusting ring on armature shaft when dextrad is stressed.
Fig. 6 is the rectangular plots of rubber buffer adjusting ring power F and deflection δ by compression.
Embodiment
Referring to figs. 1 through Fig. 3, transmission buffer type wiper motor of the present invention, comprise motor body assembly, reduction box assembly and circuit board module 10, wherein reduction box assembly is by deceleration box 8, helical gear 3 is formed, motor body assembly is by commutator (i.e. commutator) 12, armature winding 15, armature core 16, magnetic shoe 14, casing 13, armature shaft 2 (its end is worm screw shape and is meshed with helical gear 3) etc. forms that (two ends of this armature shaft 2 are equipped with respectively and are supported adjustment screw 1, spherical bearing 17), on the armature shaft 2 of described motor body assembly, and split washer 4 is equipped with successively in (and near casing 13 place of motor body assembly) in the deceleration box 8 of reduction box assembly, spacer 5, rolling bearing 7, fixing back-up ring 11, and this rolling bearing 7 is blocked fixing (namely bearing fixed card ring 9 is between deceleration box 8 and rolling bearing 7) by bearing fixed card ring 9.Described armature shaft 2 is all equipped with rubber buffer adjusting ring 6 between spacer 5 and rolling bearing 7 and between fixing back-up ring 11 and rolling bearing 7; Described split washer 4, spacer 5, rolling bearing 7, fixing back-up ring 11 and rubber buffer adjusting ring 6 (left and right side) form the transmission buffer unit (i.e. transmission bolster) of this wiper motor.
Wherein, the merging that matches of the casing 13 of motor body assembly and the deceleration box 8 of reduction box assembly tightens together.Supporting adjustment screw 1, rolling bearing 7 and spherical bearing 17, as the supporting of three before, during and after armature shaft 2,7, the rolling bearing as intermediate support is fixed between deceleration box 8 and bearing fixed card ring 9, but can slide on armature shaft 2, be fixed on armature shaft 2 before fixing back-up ring 11 assembles, rubber buffer adjusting ring 6 generally selects O type rubber ring, when armature shaft 2 and on part assembled in deceleration box 8 after, split washer 4 is installed in the groove of armature shaft 2, thus completes the axial location of armature shaft 2.Commutator 12, armature winding 15, armature core 16 are all fixedly mounted on armature shaft 2.Helical gear 3 and the worm engaging on armature shaft 2, partner transmission.
As shown in Figure 2: the installation method that arranges with the transmission bolster of described transmission buffer type wiper motor is: the right-hand member of described armature shaft 2 is installed commutator 12, armature winding 15, armature core 16 and is mounted with back-up ring 11, then the rubber buffer adjusting ring 6 (on the fixing back-up ring left side) on right side is inserted in armature shaft 2, being inserted by this armature shaft 2 is fixed in rolling bearing 7 endoporus of deceleration box 8 li, successively put into rubber buffer adjusting ring 6 and the spacer 5 in left side again, finally split washer 4 is snapped in the groove of armature shaft 2.The width now setting rolling bearing 7 is A, and the width of spacer 5 is B, and the distance between split washer and fixing back-up ring is C, and rubber buffer adjusting ring is O type rubber ring, and its diameter is d, and after installation, the distance that spacer exceedes armature shaft groove limit is δ
t.When split washer snaps in the groove of armature shaft (see Fig. 1 or Fig. 2), rubber buffer adjusting ring is compressed distortion, and the distance between outside spacer 5 and inside fixing back-up ring 11 will become C from C ', i.e. C '-C=δ
t.
As shown in Figure 3: the axial location of armature shaft 2 is the split washer 4 and the fixing back-up ring 11 that rely on the left and right limit of rolling bearing 7, this two back-up ring is all stuck in the groove of armature shaft, 7, rolling bearing to be contained in deceleration box 8 and to be fixed by bearing fixed card ring 9, as the Y-axis of armature shaft to keeper.During the work of this wiper motor, the left and right axial force that armature shaft 2 stands, by split washer 4 in the groove that is stuck in armature shaft through spacer 5 and fixing back-up ring 11, acts on rolling bearing 7 respectively.Now to utilize on the left and right limit of rolling bearing 7 respectively and spacer 5, rubber buffer adjusting ring 6 is all installed between fixing back-up ring 11, eliminate the axial location in armature shaft assembling, and the assembling magnitude of interference set by this rubber buffer adjusting ring is analyzed.
The axial width now set after the compressed distortion of rubber buffer adjusting ring on left side and right side is S.Illustrate by Fig. 3, the distance between outside spacer 5 and inside fixing back-up ring 11 will become C from C ', that is: C '-C=δ
t, then S=(2d-δ
t)/2.
As shown in Figure 4: when machine operation armature shaft 2 is when left-hand is stressed, during armature shaft work, left-hand axial force is F1, wiper motor armature shaft is because of the stressed displacement to the right of left-hand, can not move axially because rolling bearing 7 is fixed in deceleration box, armature shaft just drives split washer 4 and spacer 5 displacement to the right, the rubber buffer adjusting ring 6 in compression left side, makes the width of this rubber buffer adjusting ring 6 be compressed by S and changes over S1.On the contrary, wiper motor armature shaft, because of the stressed displacement to the right of left-hand, makes the width of rubber buffer adjusting ring 6 on right side be loosened by S and changes over S2, Figure 4 shows that the transmission buffer unit of armature shaft is because of the stressed deformation pattern of armature shaft 2 left-hand, wherein S1+S2=2S.
As shown in Figure 5: when machine operation armature shaft 2 is when dextrad is stressed, during armature shaft work, dextrad axial force is F2, wiper motor armature shaft because of dextrad stressed to left dislocation, can not move axially because rolling bearing 7 is fixed in deceleration box, armature shaft just drives fixing back-up ring 11 to left dislocation, the rubber buffer adjusting ring 6 on compression right side, makes the width of this rubber buffer adjusting ring be compressed by S and changes over S4.On the contrary, wiper motor armature shaft because of dextrad stressed to left dislocation, the width of rubber buffer adjusting ring 6 is loosened by S and changes over S3, Figure 5 shows that the transmission buffer unit of wiper motor armature shaft is because of the stressed deformation pattern of armature shaft 2 dextrad, wherein S3+S4=2S.
As shown in Figure 6: using δ (unit is for micron: μm) for rubber buffer adjusting ring deflection and as abscissa, using F (unit is for newton: N) for rubber buffer adjusting ring compression stress and as ordinate, X
d1, X
d2, X
d3be respectively the performance curve of test exemplar rubber buffer adjusting ring (diameter of section is d1, d2, d3:d1 < d2 < d3), P is δ
tand F
mcoordinate intersection point, be d0, d0 by the rubber buffer adjusting ring diameter of section of this point and as the diameter of section of selection rubber buffer adjusting ring the best, wherein δ
ttotal compression deflection when being two rubber buffer adjusting rings installations, δ
mfor armature shaft maximum axial force F
mtime rubber buffer adjusting ring deflection, F
mfor maximum axial force when armature shaft works.As be inconvenient to select d0, then can select known performance curve nearby near P point, as the X in Fig. 6
d2, then the known rubber buffer adjusting ring diameter of section of its correspondence is d2, and selects d2 to replace d0, also very close to the diameter of section of the best, at that time, and δ
t, δ
0corresponding ordinate is F
nand F
0 ', F
nfor selecting Best Point near (being d2 in figure) during curve, the corresponding δ of rubber buffer adjusting ring
mthe compression stress of deflection, F
0 'for selecting Best Point near (being d2 in figure) during curve, the corresponding δ of rubber buffer adjusting ring
0the compression stress of deflection, F
nand F
0 'type is very close to F
mand F
0.
When the rubber buffer adjusting ring selecting left and right sides identical (O type rubber ring) 6, it assembles the magnitude of interference: δ
t=C '-C, S=(2d-δ
t)/2 or δ
t=2d-2S.
For ensureing to eliminate the axial location in armature shaft assembling, then set:
δ
T＞(∑Δi
2)
1/2+Δ
Y＝(Δ1
2+Δ2
2+Δ3
2+Δ4
2+Δ5
2+Δ6
2+Δ7
2)
1/2+Δ
Y，
For ensureing to eliminate outside the axial location in armature shaft assembling, rubber buffer adjusting ring also should retain certain pretightning force, then can be set as:
δ
t=(∑ Δ i
2)
1/2+ Δ
y+ α M=(Δ 1
2+ Δ 2
2+ Δ 3
2+ Δ 4
2+ Δ 5
2+ Δ 6
2+ Δ 7
2)
1/2+ Δ
y+ 0.2m, wherein:
The tolerance value of Δ i---Related Dimension Chain;
The tolerance value of the size C of Δ 1---armature shaft 2;
Δ 2---fixes the tolerance value of the width dimensions of back-up ring 11;
Δ 3---fixes the tolerance value of the groove size of back-up ring 11 place armature shaft 2;
The tolerance value of the width dimensions A of Δ 4---rolling bearing 7;
The tolerance value of the size of Δ 5---spacer 5;
The tolerance value of the width dimensions of Δ 6---split washer 4;
The tolerance value of the groove size of Δ 7---split washer 4 place armature shaft 2;
Δ
ymaximum engagement backlash during the engagement of---armature shaft worm screw--Helical gear Transmission pair;
M---armature shaft worm screw or helical gear normal module;
α---pretightning force coefficient, selects α=0.2 (when power of motor is 50 watt-hours) herein.
This formula literal expression is as follows: for ensureing to eliminate outside the axial location in armature shaft assembling, rubber buffer adjusting ring also should retain (certain) pretightning force, the assembling magnitude of interference (δ of described rubber buffer adjusting ring 6
t) be set as following three groups of data sums:
First group of data is: square root sum square of the tolerance value of Related Dimension Chain, and Related Dimension Chain comprises groove size, the width dimensions A of rolling bearing 7, the size of spacer 5, the width dimensions of split washer 4, the groove size of split washer 4 place armature shaft 2 of the C section size (distance namely between split washer 4 to fixing back-up ring 11) of armature shaft 2, the width dimensions fixing back-up ring 11, fixing back-up ring 11 place armature shaft 2; Second group of data is: armature shaft worm screw--maximum engagement backlash during the engagement of Helical gear Transmission pair; 3rd group of data are: pretightning force coefficient is multiplied by armature shaft worm screw or helical gear normal module (when power of motor is 50 watt-hours, selecting pretightning force coefficient to be 0.2) herein.
Take model as the power of ZD1531A be the wiper motor of 50 watts be example:
δ
T＝(∑Δi
2)
1/2+Δ
Y+αM＝(Δ1
2+Δ2
2+Δ3
2+Δ4
2+Δ5
2+Δ6
2+Δ7
2)
1/2+Δ
Y+0.2m＝(0.1
2+0.1
2+0.1
2+0.01
2+0.1
2+0.1
2+0.1
2)
1/2+0.25+0.2X1＝0.695(mm)。
Illustrate according to Fig. 4, when machine operation armature shaft 2 is when left-hand is stressed, its left-hand axial force is F1, and wiper motor armature shaft is because of the stressed displacement to the right of left-hand, and setting left-hand axial force maximum is F
1M, and corresponding left side rubber buffer adjusting ring 6 deflection is δ
1M; In like manner, illustrate according to Fig. 5, when machine operation armature shaft 2 is when dextrad is stressed, during its work, dextrad axial force is F2, wiper motor armature shaft because of dextrad stressed to left dislocation, setting dextrad axial force maximum is F
2M, and corresponding right side rubber buffer adjusting ring 6 deflection is δ
2M.Again because wiper motor armature shaft is because of the stressed displacement to the right of left-hand, the width of right side rubber buffer adjusting ring 6 being loosened by S and changes over S2, for ensureing that the axial location in armature shaft assembling does not occur gap, then can set again: S2=d; In like manner require: S3=d, then: δ
t=δ
1M; δ
t=δ
2M.Work as δ
1M=δ
2Mtime, δ
t=δ
1M=δ
2M=δ
m.
Wherein δ
mfor armature shaft left and right maximum axial force equal time, the deflection of rubber buffer adjusting ring during maximum axial force.
Rubber buffer adjusting ring is installed, as the transmission buffer unit parts in armature shaft transmission, and its best magnitude of interference of setting and size is analyzed.When the reciprocating motion of one-period done by wiper, the armature shaft (containing worm screw) of wiper motor alternately can be subject to a left side, the axial force in right two directions, due to armature shaft worm screw--exist between gap and armature shaft assembling and positioning part and may there is gap between the engagement of Helical gear Transmission pair, vibration and noise can be produced when wiper motor works, the invention provides a kind of wiper motor transmission buffer unit and design and installation method thereof, when machine operation, making armature shaft worm screw--Helical gear Transmission pair reduces vibrations and impacts, the vibration of remarkable reduction wiper motor and noise, improve motor performance and life-span.
Wiper motor armature shaft, because of the stressed displacement to the right of left-hand, makes the width of the rubber buffer adjusting ring 6 on right side be loosened by S and changes over S2, for ensureing that the axial location in armature shaft assembling does not occur gap, requires: S2 >=d; In like manner require: S3 >=d.
Again because of S1+S2=2S, and S3+S4=2S, and S=(2d-δ
t)/2;
As S2=S3=d and setting S1=S4, then S1=S4=d-δ
t;
Show now, rubber buffer adjusting ring is out of shape by the elastic compression of maximum axial force, and storage power, become the buffer unit parts in armature shaft worm-drive.
To determining that it installs best total magnitude of interference δ
tand the method for designing of rubber buffer adjusting ring diameter d: utilize and rubber buffer adjusting ring (i.e. O type rubber ring) is installed, eliminate the axial location in armature shaft assembling, and as the buffer unit parts of the storage power in armature shaft transmission, to determining its best magnitude of interference δ
0and the size of rubber buffer adjusting ring diameter d carries out above-mentioned analysis, its method for designing is as follows.For ensureing to eliminate the axial location in the assembling of armature shaft worm screw, existing setting:
δ
t=(Δ 1
2+ Δ 2
2+ Δ 3
2+ Δ 4
2+ Δ 5
2+ Δ 6
2+ Δ 7
2)
1/2+ Δ
y+ 0.2m, and selected: δ
t=δ
1M=δ
2M=δ
m.
Wherein δ
1M, δ
2Mfor the maximum axial force F in left and right two directions of armature shaft
mtime deflection, work as δ
1M=δ
2Mtime, setting δ
1M=δ
2M=δ
m.δ
mfor armature shaft maximum axial force F
mtime rubber buffer adjusting ring deflection.Select rubber buffer adjusting ring optimal cross section diameter.
See Fig. 6, X
d1, X
d2, X
d3be respectively the performance curve that test exemplar rubber buffer adjusting ring diameter of section is d1, d2, d3 (d1 < d2 < d3), P is δ
mand F
mcoordinate intersection point, by the rubber buffer adjusting ring diameter of section of this point be d0, d0 then as the diameter of section selecting rubber buffer adjusting ring the best, wherein δ
tfor total compression deflection when two, left and right rubber buffer adjusting ring is installed, δ
t=2 δ
0=δ
m, or δ
0=0.5 δ
t=0.5 δ
m.
Wherein: δ
0for compress variation when single rubber buffer adjusting ring is installed;
δ
mfor armature shaft maximum axial force F
mtime O type rubber ring deflection;
F
mfor maximum axial force when armature shaft works.
As be inconvenient to select d0, then can select known performance curve nearby near P point, as the X in Fig. 6
d2, then the known O type rubber ring diameter of section of its correspondence is d2, and selects d2 to replace d0, also very close to the diameter of section of the best, at that time, and δ
t, δ
0corresponding ordinate is F
nand F
0 ', F
nfor selecting Best Point near (being d2 in Fig. 6) during curve, the corresponding δ of O type rubber ring
mthe compression stress of deflection, F
0 'for selecting Best Point near (being d2 in Fig. 6) during curve, the corresponding δ of O type rubber ring
0the compression stress of deflection, F
nand F
0 'type is very close to F
mand F
0.
The design selecting method of described rubber buffer adjusting ring 6 is:
1. employing material is the O shape circle of acrylonitrile-butadiene rubber is rubber buffer adjusting ring, and D is consistent with the C section radial dimension of armature shaft 2 for this O shape circle internal diameter;
2. rubber buffer adjusting ring assembling magnitude of interference δ is calculated
t:
δ
T＝(∑Δi
2)
1/2+Δ
Y+αM＝(Δ1
2+Δ2
2+Δ3
2+Δ4
2+Δ5
2+Δ6
2+Δ7
2)
1/2+Δ
Y+0.2m
Selected: armature shaft maximum axial force F
mtime rubber buffer adjusting ring deflection δ
m.
δ
M＝δ
1M＝δ
2M＝δ
T。
3. maximum axial force F when armature shaft works is calculated
m;
4. by this O shape circle same inner diameter D, δ (μm)-F (N) performance curve (see Fig. 6) made respectively by the O type circle with different diameter of sections (d1, d2, d3 etc.);
5. on δ (μm)-F (N) coordinate of the performance curve of O type circle, δ is chosen
m=δ
tand F
m, obtain intersection point P;
6. choose the performance curve nearest with P point, the diameter of section (d2) of its correspondence is the diameter of section size that O type circle is intended selecting;
7. verify: require: PP '/F
m≤ 5%.
Take model as the power of ZD1531A be the wiper motor of 50 watts be example:
1. employing material is the O type circle of acrylonitrile-butadiene rubber is rubber buffer adjusting ring, and D is consistent with the C section radial dimension of armature shaft 2 for this O type circle internal diameter, D=8.
2. rubber buffer adjusting ring assembling magnitude of interference δ is calculated
t
δ
T＝(∑Δi
2)
1/2+Δ
Y+αM＝(Δ1
2+Δ2
2+Δ3
2+Δ4
2+Δ5
2+Δ6
2+Δ7
2)
1/2+Δ
Y+0.2m＝(0.1
2+0.1
2+0.1
2+0.01
2+0.1
2+0.1
2+0.1
2)
1/2+0.25+0.2X1＝0.695(mm)。
Selected: armature shaft maximum axial force F
mtime rubber buffer adjusting ring deflection δ
m.
δ
M＝δ
1M＝δ
2M＝δ
T＝0.695(mm)。
3. maximum axial force F when armature shaft works is calculated
m.
Model to be the power of ZD1531A the be wiper motor of 50 watts, when output services torque is 4.4Nm, as calculated, F
m=80N.
4. by this O shape circle same inner diameter D, make δ (μm)-F (N) performance curve about the O type circle of different diameter of sections (d1, d2, d3 etc.), see Fig. 6.
5. on δ (μm)-F (N) coordinate of the performance curve of O type circle, δ is chosen
m=δ
t=0.695 (mm) and F
m=80N, obtains intersection point P, sees Fig. 6.
6. choose the performance curve nearest with P point, the diameter of section of its correspondence is the diameter of section size that d2, d2=2 are O type circle and intend selecting.
7. verify: PP '/F
m=4.5%≤5%.
Above-mentionedly determine that it installs best total magnitude of interference δ
tand the method for designing of rubber buffer adjusting ring diameter of section d, provide a kind of wiper motor transmission buffer unit and method for designing thereof, through test, when wiper motor works, making armature shaft worm screw--Helical gear Transmission pair reduces vibrations and impacts, the vibration of remarkable reduction motor and noise, improve motor performance and life-span.
In addition, when the maximum axial force in left and right two directions of armature shaft does not wait, above-mentioned method for designing can be applied, select different rubber buffer adjusting ring diameter of section d.
The invention provides a kind of transmission buffer unit and design and installation method thereof of wiper motor, when wiper motor works, making armature shaft worm screw--Helical gear Transmission pair reduces vibrations and impacts, and significantly reduces vibration and the noise of motor, improves motor performance and life-span.The present invention can be widely used in various permanent magnet DC motors supporting on vehicle, as wiper motor, seat motor, glass lifting motor, skylight motor etc.
Claims (3)
1. a transmission buffer type wiper motor, comprise motor body assembly, reduction box assembly and circuit board module (10), wherein reduction box assembly is by deceleration box (8), helical gear (3) is formed, motor body assembly is by commutator (12), armature winding (15), armature core (16), magnetic shoe (14), casing (13), armature shaft (2) is formed, it is characterized in that: on the armature shaft (2) of described motor body assembly, and in the deceleration box (8) of reduction box assembly, split washer (4) is housed successively, spacer (5), rolling bearing (7), fixing back-up ring (11), and this rolling bearing (7) blocks fixing by bearing fixed card ring (9), go up at described armature shaft (2) and between spacer (5) and rolling bearing (7) and between fixing back-up ring (11) and rolling bearing (7), rubber buffer adjusting ring (6) be all housed, described split washer (4), spacer (5), rolling bearing (7), fixing back-up ring (11) and rubber buffer adjusting ring (6) form the transmission bolster of this wiper motor, the assembling magnitude of interference of described rubber buffer adjusting ring (6) is following three groups of data sums: first group of data is: square root sum square of the tolerance value of Related Dimension Chain, and Related Dimension Chain comprises groove size, the width dimensions of rolling bearing, the size of spacer, the width dimensions of split washer, the groove size of split washer place armature shaft of the C section size of armature shaft, the width dimensions fixing back-up ring, fixing back-up ring place armature shaft, second group of data is: armature shaft worm screw--maximum engagement backlash during the engagement of Helical gear Transmission pair, 3rd group of data are: pretightning force coefficient is multiplied by armature shaft worm screw or helical gear normal module.
2. one kind there is the transmission bolster of transmission buffer type wiper motor according to claim 1 installation method is set, it is characterized in that: the right-hand member of described armature shaft (2) installs commutator (12), armature winding (15), armature core (16) and be mounted with back-up ring (11), then the rubber buffer adjusting ring (6) on right side is inserted in armature shaft (2), being inserted by this armature shaft (2) is fixed in inner rolling bearing (7) endoporus of deceleration box (8), successively put into rubber buffer adjusting ring (6) and the spacer (5) in left side again, finally split washer (4) is snapped in the groove of armature shaft (2).
3. transmission buffer type wiper motor according to claim 2 transmission bolster installation method is set, it is characterized in that: the design selecting method of described rubber buffer adjusting ring (6) is:
1. employing material is the O shape circle of acrylonitrile-butadiene rubber is rubber buffer adjusting ring, and this O shape circle internal diameter (D) is consistent with the C section radial dimension of armature shaft;
2. the rubber buffer adjusting ring assembling magnitude of interference (δ is calculated
t); And selected armature shaft maximum axial force F
mtime rubber buffer adjusting ring deflection (δ
m);
3. maximum axial force (F when armature shaft works is calculated
m);
4. by this O shape circle same inner diameter (D), δ (μm)-F (N) performance curve made respectively by the O type circle with different diameter of sections (d1, d2, d3);
5. on δ (μm)-F (N) coordinate of the performance curve of O type circle, δ is chosen
m=δ
tand F
m, obtain intersection point P;
6. choose the performance curve nearest with P point, the diameter of section (d2) of its correspondence is the diameter of section size that O type circle is intended selecting;
7. verify.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210384311.3A CN102904376B (en) | 2012-10-09 | 2012-10-09 | Transmission buffer type wiper motor and transmission bolster thereof installation method is set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210384311.3A CN102904376B (en) | 2012-10-09 | 2012-10-09 | Transmission buffer type wiper motor and transmission bolster thereof installation method is set |
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| CN102904376A CN102904376A (en) | 2013-01-30 |
| CN102904376B true CN102904376B (en) | 2015-09-23 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104369716A (en) * | 2014-11-19 | 2015-02-25 | 浙江胜华波电器股份有限公司 | Wiper motor free of lateral swing |
| CN105119414B (en) * | 2015-09-29 | 2018-04-20 | 珠海凯邦电机制造有限公司 | Rotating shaft axial limiting structure and motor |
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| CN1599680A (en) * | 2001-12-03 | 2005-03-23 | 日本精工株式会社 | Electric power steering device |
| CN1633375A (en) * | 2003-02-20 | 2005-06-29 | 日本精工株式会社 | Electric Steering |
| JP2005186781A (en) * | 2003-12-25 | 2005-07-14 | Favess Co Ltd | Electric power steering device |
| CN2772105Y (en) * | 2004-11-26 | 2006-04-12 | 上海实业交通电器有限公司 | Automobile direct-current dynamo |
| JP2008002523A (en) * | 2006-06-21 | 2008-01-10 | Ntn Corp | Electric linear actuator |
| CN201898411U (en) * | 2010-12-02 | 2011-07-13 | 浙江胜华波电器股份有限公司 | Three-supporting motor |
| CN202840809U (en) * | 2012-10-09 | 2013-03-27 | 浙江胜华波电器股份有限公司 | Transmission buffer type wiper motor |
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| CN1599680A (en) * | 2001-12-03 | 2005-03-23 | 日本精工株式会社 | Electric power steering device |
| CN1633375A (en) * | 2003-02-20 | 2005-06-29 | 日本精工株式会社 | Electric Steering |
| JP2005186781A (en) * | 2003-12-25 | 2005-07-14 | Favess Co Ltd | Electric power steering device |
| CN2772105Y (en) * | 2004-11-26 | 2006-04-12 | 上海实业交通电器有限公司 | Automobile direct-current dynamo |
| JP2008002523A (en) * | 2006-06-21 | 2008-01-10 | Ntn Corp | Electric linear actuator |
| CN201898411U (en) * | 2010-12-02 | 2011-07-13 | 浙江胜华波电器股份有限公司 | Three-supporting motor |
| CN202840809U (en) * | 2012-10-09 | 2013-03-27 | 浙江胜华波电器股份有限公司 | Transmission buffer type wiper motor |
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