CN1088163C - Bearing structural body - Google Patents
Bearing structural body Download PDFInfo
- Publication number
- CN1088163C CN1088163C CN97113229A CN97113229A CN1088163C CN 1088163 C CN1088163 C CN 1088163C CN 97113229 A CN97113229 A CN 97113229A CN 97113229 A CN97113229 A CN 97113229A CN 1088163 C CN1088163 C CN 1088163C
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- CN
- China
- Prior art keywords
- carriage
- sleeve
- bumps
- yoke
- peripheral surface
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Sliding-Contact Bearings (AREA)
- Mounting Of Bearings Or Others (AREA)
- Motor Or Generator Frames (AREA)
Abstract
To restrain the distortion of a sleeve inner diameter, caused when a sleeve is fixed by pressing it into a bracket, and moreover, when a yoke is fixed by pressing it into the outer periphery of the bracket, in a fluid bearing structure used in various rotary equipments such as a motor. The change of sleeve pressing-in force to the change of pressing-in allowance can be restrained, by equipping, in a circumferential direction, plural heights, (ranging in the axis direction of the inner circumferential surface 2a of a bracket 2 for pressing in a fluid bearing sleeve 1 and protruded in a diameter direction) resultantly, the distortion of a sleeve inner circumferential surface 1a causing at the time of pressing-in can be restrained. Moreover, the distortion of the surface 1a, promoted by pressing in a yoke, can be restrained by providing the heights (ranging in the axis direction to be protruded in the diameter direction, so as to cross the heights provided in the inner surface to avoid overlapping) on the outer periphery of the bracket 2 to pressing in the yoke; thereby improving productivity while keeping the high accuracy and high speed rotation of the fluid bearing.
Description
Technical field
The present invention relates to a kind of bearing structure, it comprises the carriage that inserts a sleeve as a supporting mass under pressure, and this carriage is used for fluid bearing etc., and/or press fit over a yoke in the carriage cylindrical.
Background technique
Recently, need be used for multi-purpose rotational structure for example motor or the high analog of compact structure precision, adapt to its miniaturization and improve multiduty performance with high rotating speed.When fluid bearing when being usually used in supporting motor, need be with processing/assembling bearing accurately so that make electric machine structure compacter, precision and rotating speed are higher, meanwhile, boost productivity, and reduce cost.
Below traditional hydraulic bearing structure will be described.
Figure 14 is to use the cross sectional view of the motor of fluid bearing product, and this fluid bearing is made of axle 13 and sleeve 1.Described axle 13 has a groove 13a, and the groove that sleeve 1 has is similar to axle 13 and supports this axle, as shown in figure 14.Turntable 15, magnet 14 grades are fixed on the axle 13.When axle 13 by sleeve 1 and bearing 16 when the thrust direction supports to sleeve 1, axle 13 rotates.Sleeve 1 is fixed on the interior circle of carriage 11.The yoke 10 that has coil 12 is fixed on the cylindrical of carriage 11.
Usually, in hydraulic bearing structure shown in Figure 14, cylindrical sleeve 1 is pressed among the carriage 11 with cylindrical inner peripheral surface 11a, as shown in figure 15, the inner peripheral surface 1a of abrasive sleeve 1 then is so that eliminate the distortion that produces when being press-fitted, thereby obtain the cylindricity of circle, process several grooves afterwards.When being press fitted into yoke 10 on the carriage 11, the distortion that causes owing to being press-fitted of yoke 10 has increased the distortion of the interior round 1a of sleeve 1.Therefore, under being pressed into state on the carriage 11, yoke 10 has to process the inner peripheral surface of sleeve 1.
With after processing sleeve fully, for example at the refine inner peripheral surface or after forming groove, the mode that sleeve 1 is press fitted in the carriage 11 is compared, above-mentioned general fluid bearing needs big and complicated manufacturing mechanism, process step is many, that is, consider that from cost and productivity aspect prior art is disadvantageous.Under situation about sleeve 1 being press fitted in the carriage 11 with cylindrical inner peripheral surface, the distortion of carriage is along the expansion of external diameter direction when being press-fitted, and integral body is by shown in the arrow among Figure 16 13.Figure 16 is the cross sectional view of carriage 11, and this result makes strong tensile stress act on the circumferencial direction of carriage 11 equably, thereby sizable pressure is applied on the sleeve, in addition when carriage 11 also be like this during its diameter slightly for a change.Although the sleeve that needs accurate dimension is in order to supporting axle, the processing irreqularity that causes owing to the irreqularity in build-up tolerance has influenced the distortion of circle 1a in the sleeve 1 widely.So sleeve 1 is press fitted on the carriage 11 should abrasive sleeve 1 inner peripheral surface become fluting so that improve precision.For example when will internal diameter be the brass sleeve 1 of 2 millimeters and excircle build-up tolerance 30 μ m to be press fitted into internal diameter be 6 millimeters, thickness is in 1 millimeter the iron carriage 11 time, the internal diameter of sleeve 1 is distortion 10 μ m approximately, surpass tolerance 1 μ m.Build-up tolerance should be evenly and is the μ m utmost point, so that restrained deformation is in this scope.Though parts are to process with good manufacturing efficiency, but with compare its machining accuracy and exist not enough by cutting parts that sheet metal pressure for example obtained, need carriage 11 to boost productivity and reduce cost, above-mentioned parts can not reach gratifying machining accuracy, and this has hindered improved bearing development.In addition, when in the excircle that yoke 10 is pressed into carriage 11, the compressive force that is added on the sleeve 1 produces very big obstruction again.So, for realizing boosting productivity, reduce cost and keep fluid bearing highi degree of accuracy and high rotating speed reliably, necessary is keeps more even and small space between sleeve 1 and axle 13, and does not consider the build-up tolerance variation of sleeve 1 and carriage 11.
Summary of the invention
So the purpose of this invention is to provide a kind of bearing structure, it can be limited in the distortion in the sleeve diameter, wherein distortion is that (except that sleeve is press-fitted) is caused when being pressed into sleeve in the carriage and/or when a yoke is press fitted into the carriage excircle, and can eliminate to be press-fitted and afterwards process the internal surface or the caused follow-up trouble of slotting.
For realizing this purpose, according to a first aspect of the invention, provide a bearing structure, comprising:
One bearing sleeve; And
A carriage that is used for bearing sleeve as bearing, this carriage has many first bumps, circumferencial direction along its a part of inner peripheral surface forms these first bumps, and sleeve is pressed on this inner peripheral surface, and these bumps extend axially and stretch out along its diametric(al) along it.
Carriage has many second bumps, its circumferencial direction is provided with these second bumps in carriage part excircle upper edge, be press-fitted a yoke at carriage part circumference place or these bumps be set along the excircle direction of the yoke on the outer peripheral surface that will be press fitted into carriage, these bumps extend vertically, and stretch out along diametric(al) by this way, promptly radially not with overlapping at first bump of the inner peripheral surface place of carriage formation.
Utilize resiliently deformable to be press-fitted and fix sleeve, carriage and yoke.
According to second aspect present invention, the bearing structure according to first aspect is provided, wherein first and second bumps are made of many flat parts, and these flat parts also are formed on the inner circumference place of the interior and outer peripheral surface or the yoke of cylindrical bracket.
According to third aspect present invention, provide according to any one described bearing structure of first and second aspects, wherein first and second bumps are straight ribs; These straight ribs along in the carriage and the diametric(al) of the inner peripheral surface of outer peripheral surface or yoke stretch out.
The 4th aspect according to the present invention provides according to first to any one bearing structure of the third aspect, and wherein first bump is at the place, about neutral position between adjacent two bumps along the circumferential direction.
The 5th aspect according to the present invention provides according to first to any one bearing structure of fourth aspect, and wherein the number of each first and second bump is the same.
The 6th aspect provides the bearing structure according to the 5th aspect according to the present invention, and wherein the number of first and second bumps is arbitrary numbers of 5 to 7.
The 7th aspect provides the bearing structure according to the 6th aspect according to the present invention, and wherein the number of first and second bumps is 6.
According to eighth aspect present invention, provide according to any one bearing structure in first to the 7th aspect, wherein, all first bumps have same thickness each other, and all second bumps have same thickness each other.
Because the said structure of All aspects of of the present invention can be controlled when the sleeve diameter distortion that sleeve is press fitted into carriage and/or also produces when being press fitted into yoke (except that sleeve) on the carriage excircle.
Description of drawings
These and other direction characteristic of the present invention will be from below in conjunction with preferred embodiment, and from referring to accompanying drawing become more clear.
Fig. 1 is the perspective view according to the embodiment of the invention 1 sleeve and a carriage;
Fig. 2 is the sectional view according to the embodiment of the invention 1 sleeve and carriage;
Fig. 3 is according to the sleeve of the embodiment of the invention 2 and the perspective view of carriage;
Fig. 4 is according to the sleeve of the embodiment of the invention 2 and the sectional view of carriage;
Fig. 5 is according to the sleeve of embodiments of the invention 3 and the perspective view of carriage;
Fig. 6 is according to the sleeve of embodiments of the invention 3 and the sectional view of carriage;
Fig. 7 is according to the sleeve of embodiments of the invention 4 and the perspective view of yoke;
Fig. 8 is according to the sleeve of embodiments of the invention 4 and the sectional view of carriage;
Fig. 9 is according to the sleeve of embodiments of the invention 5 and the perspective view of carriage;
Figure 10 is according to the sleeve of the embodiment of the invention 5 and carriage and yoke sectional view;
Figure 11 is the perspective view according to the sleeve of the embodiment of the invention 6 and carriage and yoke;
Figure 12 is the sectional view according to the sleeve of the embodiment of the invention 6 and carriage and yoke;
Figure 13 is the sectional view according to whole bearing of the embodiment 3;
Figure 14 is to use the sectional view of fluid bearing;
Figure 15 is the perspective view of sleeve of the prior art and carriage;
Figure 16 is sleeve of the prior art and carriage sectional view;
Embodiment
Before describing process of the present invention, it should be noted with reference to the accompanying drawings in same parts adopt identical parameter label.
Referring to accompanying drawing the preferred embodiments of the present invention will be described.
In Fig. 1, the carriage 11 among reference number 2 expression Figure 13.On a cylindrical inner peripheral surface 2a, many flat parts are arranged, wherein the cylindrical body internal diameter is slightly larger than the external diameter of sleeve 1, many bumps 3 in carriage 11, have been constituted thus, the diameter of bump 3 inscribed circles is less than the diameter of sleeve 1, the difference of diameter becomes build-up tolerance as a result, Fig. 2 is Fig. 1 sectional view, wherein arrow A is represented the distortion of carriage when being press fitted in the carriage to sleeve, can form many bumps 3 by die casting, by in mould, suppressing sheet metal, for example form and the corresponding many grooves of bump in the die casting.
When in the carriage 2 that sleeve 1 is press fitted into such formation, different with the distortion that is produced in the prior art (thereby making whole homogeneous deformation cause along the circumferential direction homogeneous tension along the excircle direction in the prior art), some P place between bump 3 makes each bump 3 be out of shape greatly towards excircle, as shown in Figure 2, arrow A.But, according to the thickness of carriage 2, the number of bump 3, or build-up tolerance can make a P not only along the external diameter direction but also can be out of shape along internal diameter direction.Because above-mentioned bump 3 exists, therefore a part of carriage between the bump 3 not only is subjected to the resiliently deformable of tension force, and crooked, because this bending is caused by the power less than tension set, stop sleeve 1 to be press-fitted the variation of power, and then stoped the build-up tolerance variation.Suppressed to change the distortion of the inner peripheral surface 1a that influences sleeve 1 owing to processing irreqularity etc. makes build-up tolerance.For example, when in the iron carriage 2 that the brass sleeve 1 with 2mm internal diameter and 30 μ m build-up tolerances is press fitted into 6mm internal diameter and 1mm thickness, if and in embodiment's formation, form three bumps 3 by equidistant, can the limit deformation of the internal diameter of sleeve 1 on the tolerance that is not more than 1 μ m, be out of shape and produce about 10 μ m in the prior art.
In embodiment 1, obtain these bumps 3 by in the inner peripheral surface 2a of carriage 2, forming many flat parts.On the other hand, according to embodiment 2 always rib stretch out from the inner peripheral surface of carriage 2, thereby constituted a bump 4, as shown in Fig. 3 and Fig. 4.
Though three bumps in embodiment 1 and 2 are equally spaced, be not essential spaced these bumps of wanting.
The general employing is press fitted into yoke 10 on the side of excircle of carriage, at this moment, except the many bumps 3 that in the inner peripheral surface 2a of carriage 2, form as shown in Figure 5, outer peripheral surface 2b from carriage 2 alternately stretches out as the many straight rib 5 of bump, and bump 3 is not radially overlapping with these bumps 3, can know as Fig. 6 and see.In this method, also can suppress when yoke 9 is press-fitted influence to sleeve 1 internal diameter varies.
Figure 13 is the whole bearing sectional view according to embodiment 3.In Figure 13, reference number 112 is illustrated in the winding that forms in the stator core of yoke 10, and the 113rd, support the axle that rotates, the 114th, rotor magnet by bearing, the 120th, end pin, the 121st, remove and use link stopper, the 123rd, insulator, the 124th, thrust plate, the 125th, printed circuit board (PCB), the 126th, rotor field spider, magnet 114 is fixed on the support, and the 127th, bonding sheet is used for circuit board 125 is adhered to carriage 2.
As shown in Figure 7, can obtain many bumps 5 by on cylindrical outer peripheral surface 2b, forming flat recess 2C at the outer circumferential sides place shown in Fig. 5.
According to each embodiment 3 and 4,6 bumps are arranged at the inner circumference and the equidistant place of excircle of carriage 2.Yet spacing can equate.
Referring to Fig. 9, form many bumps 7 at the circumferential surface 9a place of yoke 9.As shown in figure 10, the yoke 9 that has these bumps 7 is press fitted on the carriage 2, so these bumps 7 alternately are set, bump 7 does not radially overlap each other with bump 3 at the inner peripheral surface 2a place of carriage 2.Limited like this owing to be press-fitted the variable effect of the internal diameter of 9 pairs of sleeves 1 of yoke.
As shown in Figure 11, similar to the bump 3 that the inner peripheral surface 2a place of carriage 2 in embodiment 1 forms, many bumps 9 can form many flat parts by the cylindrical inner peripheral surface 9a place at yoke 9.
According to embodiment 5 and 6, though at the inner circumference place of the inner circumference of carriage 2 and yoke 96 bumps are set equidistantly and yoke is press fitted on the carriage 2, so, always do not require equidistant so that these bumps equidistantly alternately to be set.
Though be not particularly limited the number of bump, be preferred more than three, so that fixed muffle 1 and make sleeve 1 consistent each other stably with the axial centre of carriage.When being press fitted on carriage 2 excircles, in the inner circumference of the interior of carriage and outer peripheral surface place or carriage 2 and yoke 9, form bump 3,4,5,6,7,8 to the yoke except that sleeve 1.Need only at that time these bumps alternately are set, radially can be not overlapping between the inner circumference that becomes carriage 2 and yoke 9 between the interior and excircle of carriage 2.The number of these bumps is between the internal and external circumference of carriage 2 or needn't be identical between the inner circumference of carriage 2 and yoke 9.Therefore, depend on size, the number of the bump of material and build-up tolerance and the retention force relation that is used for sleeve 1 by analyzing numerical value or testing to check.Should determine then bump size so that even when yoke 9 is press-fitted, suppress the distortion of sleeve 1, thereby can also keep sufficient intensity to prevent that yoke 9 and sleeve 1 from removing from carriage 2.Best is to determine that bump number and position produce minimum influence so that yoke is press-fitted to the bump change in location on the carriage 2, reduce the influence that is caused by the processing irreqularity thus, and this structure are easy to design.For example be fabricated from iron carriage 2 and have the 6mm internal diameter and the situation of 1mm thickness under, experimental result shows preferably, if not only be press fitted into carriage, in the inner circumference of carriage 2 and excircle, 6 bumps are set equidistantly sleeve 1 but also yoke 9 or 10.As another example as shown in Figure 6, when the carriage internal diameter that does not have inner bulge 3 was 5.8mm, the thickness of inner bulge 3 was 0.025mm, and when the external diameter of the carriage 2 that does not have outside bulge 5 was 6.9mm, the thickness of outside bulge 5 was 0.05mm.
Particularly preferably be along the circumferential direction at adjacent two second bumps 5, place, about neutral position between 6 is provided with along the circumferencial direction of its a part of inner circumference and forms bump (first bump 3,4) wherein, sleeve 1 will be press fitted on the described part inner circumference, these bumps extend axially and extend radially out along it along it, at a part of outer peripheral surface place of carriage 2 or along the circumferencial direction of the inner peripheral surface of yoke 9 second bump 5 is set along its circumferencial direction, 6, wherein yoke 9 is press fitted on the described outer peripheral surface of carriage 2, bump 5,6 extend vertically, and extend radially, radially do not form first bump 3 with inner circumferential surface place at carriage 2,4 is overlapping.As shown in Figure 6, by keeping approximately identical central angle θ, determine the about neutral position between adjacent two second bumps 5,6.Wherein first bump 3,4 is positioned at this neutral position.
Be more preferably, many each first and second bumps are identical.And the number of each first and second bump is any one number of 5-7, especially is preferably 6.If number is less than 5, may occur for example sleeve being press-fitted in the carriage 2, and by each bump when the retention force effect that affacts sleeve 1 is on it, then pressure may act on each position of a plurality of positions, the position of retention force effect has so just increased retention force greatly between above-mentioned a plurality of positions.In addition, when being press-fitted, yoke 9 can then reduce the retention force that acts on the sleeve 1 along the bump of excircle direction expansion fixed muffle 1.If number is greater than 7, may occur when sleeve 1 is press fitted in the carriage 2, then by each bump the retention force effect that acts on sleeve thereon the time, then outside spring-back force may act on each position of a plurality of positions, the position of retention force effect has so just reduced retention force between described a plurality of positions.On the other hand and since yoke 9 be press-fitted can make fixed muffle 1 bump along the big large deformation of inner circumference direction, and make sleeve 1 big large deformation.Otherwise when number is any number of 5-7, can not act on this pressure and spring-back force, so just can suitably be applied to retention force on it.Also can be used for the scope of number between carriage 2 and the yoke 9.
Preferably all first bumps are to have identical thickness each other, and all second bumps have same thickness each other.Like this, the power that is applied to its top just approximately evenly.
As mentioned above according to the present invention, in the resiliently deformable of utilizing member is press-fitted fluid bearing and be fixed to process on the carriage, as supporting structure, the carriage that is used for sleeve disposes the many circumference bumps that extend along circular direction in it, wherein sleeve is press fitted on the circumferential surface, therefore, can limit because the institute that is press-fitted of sleeve causes the sleeve diameter distortion, in addition, in the process that the yoke except that sleeve also is press fitted on the carriage excircle, used carriage or yoke have many bumps at the outer peripheral surface of carriage or the inner peripheral surface alternate configurations of yoke, and they radially not can with the many bump overlaids at bracket portion inner circumference place, therefore, limited influence to the sleeve diameter distortion.So, can produce fluid bearing with high production rate, simultaneously, can keep its highi degree of accuracy and high rotating speed.
Here integral body should comprise specification, claims accompanying drawing and summary in conjunction with the whole open files with reference to 1996,5, the 13 Japanese patent application 8-117579 that apply for.
Though, in conjunction with the preferred embodiments and with reference to accompanying drawing the present invention has been described fully, but should be noted that various variations are tangible with improving to one skilled in the art, be to be understood that these variations and improve among the scope of the invention all be included in claims and limited, unless they have broken away from scope of the present invention.
Claims (8)
1, a kind of bearing structure comprises:
One bearing sleeve (1), and
A carriage (2) that is used for bearing sleeve as a bearing support, this carriage has many first bumps, form these first bumps along the circumferencial direction of its a part of inner peripheral surface, and sleeve is press fitted on this inner circumference, these bumps extend axially and extend radially out along it along it
Described carriage has many second bumps (5,6,7,8), a part of outer peripheral surface place at the carriage that will be press-fitted yoke (9,10) along the circumferential direction or along the inner circumference direction that will be press fitted into the yoke on the carriage outer peripheral surface is provided with described second bump (5,6,7,8), these bumps extend vertically and are not overlapping with first bump that forms at the inner peripheral surface place of carriage in radial direction
Utilize resiliently deformable to fix sleeve, carriage and yoke by being press-fitted.
2, according to the bearing structure of claim 1, wherein first and second bumps are made of many flat parts, form described flat part at the interior and outer peripheral surface or the yoke inner peripheral surface place of cylindrical bracket.
3, bearing structure according to claim 1 and 2, wherein first and second bumps are straight ribs, these straight ribs are along the interior and outer peripheral surface of carriage or extending radially out of yoke inner peripheral surface.
4, bearing structure according to claim 1 and 2, the wherein about neutral position place of first bump between two adjacent bumps along the circumferential direction.
5, bearing structure according to claim 1 and 2, wherein the number of each first and second bump is the same.
6, bearing structure according to claim 5, wherein the number of each first and second bump is arbitrary numbers of 5-7.
7, bearing structure according to claim 6, wherein the number of each first and second bump is 6.
8, bearing structure according to claim 1 and 2, wherein all first bumps have identical thickness each other, and all second bumps have same thickness each other.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11757996A JP3309707B2 (en) | 1996-05-13 | 1996-05-13 | Bearing structure |
| JP117579/96 | 1996-05-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1168451A CN1168451A (en) | 1997-12-24 |
| CN1088163C true CN1088163C (en) | 2002-07-24 |
Family
ID=14715321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97113229A Expired - Fee Related CN1088163C (en) | 1996-05-13 | 1997-05-13 | Bearing structural body |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3309707B2 (en) |
| CN (1) | CN1088163C (en) |
| SG (1) | SG60066A1 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002017063A (en) * | 2000-06-29 | 2002-01-18 | Minebea Co Ltd | Motor and manufacturing method |
| JP2004183875A (en) * | 2002-12-06 | 2004-07-02 | Toyoda Iron Works Co Ltd | Resin rotary member |
| JP2007187282A (en) * | 2006-01-16 | 2007-07-26 | Johnan Seisakusho Co Ltd | Press fit structure for fitting body |
| JP5379063B2 (en) * | 2010-04-05 | 2013-12-25 | 株式会社デンソー | Throttle device |
| JP5765671B2 (en) * | 2012-01-20 | 2015-08-19 | 日本電産株式会社 | motor |
| JP5804269B2 (en) * | 2012-01-20 | 2015-11-04 | 日本電産株式会社 | motor |
| JP5821753B2 (en) * | 2012-04-02 | 2015-11-24 | コニカミノルタ株式会社 | Bearing member mounting structure, fixing device, and image forming apparatus |
| JP2018074685A (en) * | 2016-10-26 | 2018-05-10 | マブチモーター株式会社 | Brushless motor |
| JP6878986B2 (en) * | 2017-03-24 | 2021-06-02 | 日本電産株式会社 | Stator unit, motor, and fan motor |
| DE102017211792A1 (en) * | 2017-07-10 | 2019-01-10 | Aktiebolaget Skf | Method for fixing a bearing carrier and arrangement |
| JP7489185B2 (en) * | 2019-11-29 | 2024-05-23 | トヨタ紡織株式会社 | Press-fit collar structure |
| CN113070832B (en) * | 2020-01-06 | 2022-08-02 | 陈哲豪 | Magnetic sleeve |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4209579A1 (en) * | 1992-03-25 | 1993-09-30 | Vdo Schindling | Bearing for pump rotor drive shaft - has plastics bearing bush with slightly smaller cross-section than associated surrounding cast recess in metal bearing plate. |
| US5319851A (en) * | 1990-07-13 | 1994-06-14 | Mitsuba Electric Manufacturing Co., Ltd. | Method for manufacturing a bearing structure of a wiper arm |
-
1996
- 1996-05-13 JP JP11757996A patent/JP3309707B2/en not_active Expired - Fee Related
-
1997
- 1997-05-13 CN CN97113229A patent/CN1088163C/en not_active Expired - Fee Related
- 1997-05-13 SG SG1997001545A patent/SG60066A1/en unknown
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5319851A (en) * | 1990-07-13 | 1994-06-14 | Mitsuba Electric Manufacturing Co., Ltd. | Method for manufacturing a bearing structure of a wiper arm |
| DE4209579A1 (en) * | 1992-03-25 | 1993-09-30 | Vdo Schindling | Bearing for pump rotor drive shaft - has plastics bearing bush with slightly smaller cross-section than associated surrounding cast recess in metal bearing plate. |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1168451A (en) | 1997-12-24 |
| JP3309707B2 (en) | 2002-07-29 |
| JPH09303408A (en) | 1997-11-25 |
| SG60066A1 (en) | 1999-02-22 |
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