CN1093501A - Miniature motor - Google Patents
Miniature motor Download PDFInfo
- Publication number
- CN1093501A CN1093501A CN93117874A CN93117874A CN1093501A CN 1093501 A CN1093501 A CN 1093501A CN 93117874 A CN93117874 A CN 93117874A CN 93117874 A CN93117874 A CN 93117874A CN 1093501 A CN1093501 A CN 1093501A
- Authority
- CN
- China
- Prior art keywords
- mentioned
- gyroaxis
- bearing
- motor according
- elastic component
- Prior art date
- 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.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2380/00—Electrical apparatus
- F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Motor Or Generator Frames (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
The especially relevant miniature motor that is used for minicam, sound equipment, mapping device, automobile electrical device of air etc. of the present invention.Comprise that inside is installed with the housing of stator; be provided in the housing; with the rotor that is arranged on its gyroaxis of bearing pivoting support on the housing; it is characterized in that also comprising and be installed in respectively on each bearing; the outer peripheral face of gyroaxis is stretched out sheet with the elasticity that each inner peripheral surface of bearing contact respectively along the relative gyroaxis outer peripheral face of laterally pushing, guarantee of central axial direction, have the vibration that can prevent the rotor gyroaxis really and can play stably performance with make advantage such as simple structure.
Description
The relevant miniature motor of the present invention, especially with precision optical machinery such as minicam, wear sound equipment, the mapping devices such as boxlike stereo recorder of earphone, and the miniature motor that automobile electrical device of air etc. uses is relevant.
Miniature motor just is widely used in fields such as above-mentioned various devices at present, and forward more high-performance, small-sized light weight and slimming direction develop.
Miniature motor has the permanent magnet that is installed in the housing inner face, and with the gyroaxis that is arranged on the two bearings supporting rotor on the housing biside plate, it can freely be turned round.The gyroaxis sliding contact is at the inner peripheral surface of bearing, yet, turn round smoothly in order to make gyroaxis, need between the outer peripheral face of gyroaxis and bearing inner peripheral surface, to guarantee to form minim gap.Owing to there is this gap, gyroaxis is produced along the vibration of the vertical direction of relative central axial direction with rotor, exist whole motor that the problem of vibration takes place in view of the above.
Therefore, in order to reduce the gyroaxis vibration, the scheme of the miniature motor with the 1st to the 3rd kind of composition existing as described below is suggested.
The miniature motor of the 1st kind of composition, by deliberately making each magnetic force change of the permanent magnet with the two poles of the earth, and break former magnetic balanced, magnetic force side pressure (so-called transverse direction along relative central axis, the actuating pressure of for example vertical direction) is added on the rotor structure that gyroaxis is pushed along a direction of bearing inner peripheral surface.
The miniature motor of the 2nd kind of composition is to use spring etc. mechanically to apply side pressure on gyroaxis, and gyroaxis is pushed along bearing inner peripheral surface one direction.(opening clear 60-200740 communique) with reference to the Japan Patent spy.
The miniature motor of the 3rd kind of composition is made bearing with the synthetic resin with resiliency, wishes to absorb the gyroaxis vibration with bearing.
Yet, because the moment of torsion of miniature motor is very little,, exist because of by applying the magnetic force side pressure for the miniature motor of above-mentioned the 1st kind of composition, make torque ripple big, or starting torque degenerates starting performance can not to play stably the problem of performance greatly.
In addition, make the motor interior complex structure, thereby also have manufacturing process's complexity and the big problem of scale for applying the magnetic force side pressure.
In addition, because miniature motor each several part size is little, the inner space is narrow, miniature motor for above-mentioned the 2nd kind of composition, if can install, also there is the problem because of the part a few days increases, the operation increase improves cost in the leeway that does not almost have the mounting spring part.
Though make the above-mentioned gap between bearing inner peripheral surface and gyroaxis as far as possible little, can suppress gyroaxis vibration, yet because synthetic resin because of the change in size that the temperature difference takes place is bigger, makes the gap can not be too little.Therefore, there is the problem that can not fully absorb the gyroaxis vibration in the miniature motor of above-mentioned the 3rd kind of composition.
Therefore, in order to address the above problem, purpose is to provide and can prevents the vibration of rotor gyroaxis, and the performance that can play stably and simply constructed miniature motor just in the present invention.
Be the miniature motor of the present invention that achieves the above object, comprise its inner housing that stator is installed, be arranged in this housing, with being arranged on the rotor that the bearing components on this housing can be supported its gyroaxis freely to rotate, it is characterized in that also comprising making above-mentioned gyroaxis outer peripheral face along the elastic component of laterally pushing, make above-mentioned outer peripheral face to contact of central axial direction relatively with above-mentioned bearing components inner peripheral surface.
Among the present invention, beyond the contacted contact site of the outer peripheral face of inner peripheral surface that makes bearing components and gyroaxis, guarantee to have small gap.To produce vibration even carry out rotating gyroaxis along the transverse direction of relative central axis because of there being above-mentioned gap, because elastic component pushes the gyroaxis outer peripheral face, gyroaxis is not produced vibrate and continue gyration smoothly and can continue maintenance gyroaxis and the bearing components inner peripheral surface state of contacting.
Therefore, can prevent the rotor gyroaxis along the transverse vibration of relative central axial direction and the performance that can play stably, and can make simple structure.
Simple declaration to accompanying drawing
Fig. 1-5 expression the present invention the 1st embodiment, Fig. 1 is the profile of expression miniature motor unitary construction,
Fig. 2 is the stereogram of expression miniature motor outward appearance,
Fig. 3 is motor field frame one a side bearing part amplification profile shown in Figure 1,
Fig. 4 is housing one a side bearing part stereogram shown in Figure 3,
Fig. 5 is motor cover end one a side bearing portion amplification profile shown in Figure 1,
Fig. 6 is expression the present invention the 2nd embodiment bearing portion profile,
Fig. 7 stretches out the profile of sheet for representing the present invention's the 3rd embodiment elasticity,
Fig. 8 stretches out the stereogram of sheet for representing the present invention's the 4th embodiment elasticity,
Fig. 9 stretches out the stereogram of sheet for representing the present invention's the 5th embodiment elasticity,
Figure 10 is expression the present invention the 6th embodiment bearing portion profile,
Figure 11 is expression the present invention the 7th embodiment bearing portion profile.
Following with reference to Fig. 1-11, the embodiment of the invention is described.
Fig. 1-5 expression the present invention the 1st embodiment, Fig. 1 and Fig. 2 represent the unitary construction of miniature motor.In each figure, same-sign is represented identical or suitable part.
As depicted in figs. 1 and 2, miniature motor 1 comprises that its inside is installed with the housing 3 of stator 2, is arranged on the little of housing 3 inside, with the gyroaxis 7 that is arranged on bearing components 5,6 supporting rotors 4 on the housing 3, it can freely be turned round.
As shown in Figure 2, housing 3 comprises that for example to use with mild steel be that the metal material of raw-material cold-rolled steel sheet one class is formed with on the casing 8 of end hollow tube-shape and the chimeric peristome 9 that is fixed on casing 8.For example the lid 10 that forms with resin material or other insulating material in addition, also is provided with the pair of plates 11 that forms parallel surface.
As shown in Figure 1 stator 2 is fixed on the inner peripheral surface cylindraceous 12 of casing 8, for example forms the pair of permanent magnets of fan shape with hard steel one class magnetic material.
Many groups (for example two groups the brush 16) and commutator 15 sliding contacts that form with conductor material are set on lid 10, can allow electric current flow through.In addition, a plurality of (for example a pair of) splicing ear 17 that is electrically connected with each brush 16 is installed on lid 10 respectively, is made each end 18 of each splicing ear 17 protruding from lid 10 surfaces 19.
Inner face central authorities formation cylindrical shape at lid 10 has end recess 20.To be installed in end recess 20 inside with non-rotating state as the distolateral bearing 6 of the lid of bearing components, an end bearing of gyroaxis 7 lived, and enable freely to turn round with the distolateral bearing 6 of lid.
The central portion of base plate 21 that casing side bearing 5 as bearing components is installed in casing 8 with non-rotating state, enables freely to turn round with supporting near gyroaxis 7 efferents 22 with this casing side bearing 5.
In addition, stretch out sheet 25, stretch out along oblique from the inner face 27 that covers distolateral bearing 6, for the outer peripheral face 23 of gyroaxis 7 being pushed along direction shown in the arrow 92 as the elasticity of the opposing party's elastic component.
Fig. 3 is the amplification profile of casing side bearing shown in Figure 1 portion 30, and Fig. 4 is the stereogram of casing side bearing 5.The outer peripheral face of casing side bearing 5 is formed cylindric, engage, casing side bearing 5 is installed on the casing 8 by making the cylindrical opening portion 32 on the base plate 21 of end difference 31 that its peripheral part forms and casing 8.Run through to be provided with at the central part of casing side bearing 5 and turn round the through hole 33 of supporting rotating shaft 7 freely.In inboard, form and through hole 33 is communicated with, for circle end recess 34 arranged towards motor interior S side opening, its section configuration along the radial direction of end difference 31.Be provided with elasticity along the direction (the last direction among Fig. 3) of the circumferential edges 35 of through hole 33 and stretch out sheet 24.Along the elasticity that becomes the oblique installation that the bottom surface of end recess 34 inner face 26 is arranged stretch out sheet 24 be positioned at through hole 33 near.
In the present embodiment owing to form casing side bearing 5 and elasticity is stretched out sheet 24, and this two member 5,24 is formed one, thereby number of components is few and easy to manufacture with synthetic resin.As described synthetic resin, can use thermoplasticity or thermoset synthetic resin, preferably use has resiliency, has mixed the nylon of glass fibre etc. in it.In addition, for example should use polyamide-based, polyacetals system or polyethylene terephthalate system as thermoplastic resin.
Because casing side bearing 5 is made by synthetic resin, if represent the diameter of gyroaxis 7, D with D
1The internal diameter of expression through hole 33 is even cause this inside diameter D because of the temperature difference
1Change, also can guarantee to have enough gaps at the inner peripheral surface 36 of through hole 33 and 23 of the outer peripheral faces of gyroaxis 7.Gap when for example, the diameter D of gyroaxis 7 is 1mm is D
1About-D=10～20 μ m.
Elasticity is stretched out sheet 24 and is had flexiblely for to make its top can often push the outer peripheral face 23 of gyroaxis 7, and its root 38 is towards top ends 37 attenuation gradually, and makes its circumferential edges 35 along through hole 33 form crooked tabular as shown in Figure 4.In addition, top ends 37 has from the contact site 39 that contacts with gyroaxis outer peripheral face 23 shape to foreign side's bending of radial direction.
Among Fig. 3, the elasticity before being pressed into gyroaxis 7 in the casing side bearing 5 are stretched out the state of sheet 24 and are represented with chain-dotted line, are pressed into the back state and represent with solid line.In the state before being pressed into, elasticity is stretched out the distance D of through hole inner peripheral surface 36 of the opposition side of the position of contact site 39 of sheet 24 and central axis C
2Diameter D than gyroaxis 7 is little.In view of the above,, make elasticity stretch out sheet 24 and overcome of the foreign side deflection of its elastic force, contact site 39 is expanded to till the position of diameter D to radial direction when gyroaxis 7 is pressed in casing side bearing 5 as shown by arrow E.
Stretch out elasticity that the synthetic resin of sheet 24 has and will make this elasticity stretch out sheet 24 to turn back to original state because of constituting elasticity, become on the outer peripheral face 23 of gyroaxis 7, along the transverse direction of relative central axis C direction, for example right angle orientation applies the pressure (so-called side pressure) of frequent effect, makes gyroaxis 7 along arrow P
1Direction is pushed by elasticity, and at contact site 40, often contacts with the inner peripheral surface 36 of through hole 33.
Has lubrification owing to constitute the synthetic resin of casing side bearing 5, and the gap of 23 of bearing inner peripheral surface 36 and gyroaxis outer peripheral faces is that zero contact site 40 does not move and often is arranged in certain place (Fig. 3 is the below), gyroaxis 7 is not produced along the vibration of the transverse direction of central axis C direction relatively, and revolution continuously smoothly in through hole 33.
At the preceding state of being pressed into of gyroaxis 7, the radial direction of top ends 37 top 41 outwardly and the distance D of 36 of the inner peripheral surfaces of the opposition side of relative central axis C
3Diameter D than gyroaxis 7 is bigger.Therefore, when with gyroaxis 7 when the relative casing side bearing 5 of arrow E direction is pressed into, elasticity is stretched out 24 pairs of sheets and is pressed into gyroaxis 7 and does not form obstacle, enables one side and contacts with the top ends 37 that elasticity is stretched out sheet 24, when its one side is expanded outwardly along radial direction, insert in the through hole 33.
In addition, in the present embodiment, make elasticity stretch out sheet 24 and have its face F that square end face 42 forms in the direction of principal axis that becomes casing side bearing 5 is stretched out, and be accommodated in the length in the end recess 34.In view of the above, even inner body 43 is installed in the motor interior S, elasticity is stretched out sheet 24 and also can not contacted with inner body 43, thereby forms obstacle.
Fig. 5 is the amplification profile of lid end bearing shown in Figure 1 portion 50, and as shown in the figure, the elasticity that also forms on the medial surface 27 of lid end bearing 6 and form on casing side bearing 5 is stretched out the elasticity of sheet 24 same structures and stretched out sheet 25.Cover end bearing 6 and elasticity is stretched out sheet 25 with forming with above-mentioned same synthetic resin, and with two members, 6,25 formation one.Therefore, also can bring into play the effect same in this lid end bearing portion 50 with casing side bearing portion 30.In addition, because making elasticity stretch out sheet 25 has not the face Fa that forms from the direction of principal axis inner face 42a that becomes lid 10 and stretches out, and the such length in the inside that is accommodated in end recess 20, therefore, elasticity is stretched out the obstacle that sheet 25 does not constitute other inner body of motor interior S.Structure with casing side bearing shown in Figure 3 portion 30 aspect other structure is identical.
Fig. 6 is the profile of expression the present invention the 2nd embodiment bearing portion, forms elongated shape stretching out sheet 24b as the elasticity of the elastic component that forms on the casing side bearing 56 of bearing components.Be positioned at the position of leaving gyroaxis 7 suitable distances for the root 38b that makes elasticity stretch out sheet 24b exactly, it be fixed on the casing side bearing 56 integratedly, therefore, the length that elasticity is stretched out sheet 24b and elasticity shown in Figure 3 stretch out sheet 24 compare grow some.Relax elasticity in view of the above and stretch out the elastic force of sheet 24b, can make its top ends 37b push the outer peripheral face 23 of gyroaxis 7 with appropriate pressing force.
Fig. 7 stretches out the profile of sheet 24c as the elasticity of the present invention's the 3rd embodiment elastic component for expression.Above-mentioned and elasticity described later is stretched out sheet form the state shape of attenuation gradually that is in line from root to contact site 39 when the no load condition with gyroaxis, yet, even stretching out sheet 24c, the elasticity of present embodiment also has curved shape at no load condition.Make exactly from root 38c and have slick and sly curved shape to the contact site 39c that the outer peripheral face with gyroaxis 7 contacts with casing side bearing 5c formation one.Make top 37c crooked integratedly to the foreign side of radial direction from contact site 39c.Therefore, produce the flexible deformation owing to can make elasticity stretch out sheet 24c in the present embodiment, thereby can suitably determine side pressure, in addition, make to casing side bearing 5c insertion and 7 operations of extraction gyroaxis and also carry out easily gyroaxis 7.
Fig. 8 stretches out the stereogram of sheet 24d as the elasticity of the present invention's the 4th embodiment elastic component for expression.As shown in the figure, elasticity is stretched out sheet 24d and the tabular elasticity of the 1st embodiment is stretched out sheet 24 be divided into a plurality ofly, and by small pieces 51,52,53 form.And, respectively each small pieces 51,52,53 is fixed on independently and integratedly on the inner face 26d as the casing side bearing 5 of bearing components.In view of the above, owing to make each small pieces 51,52,53 push the outer peripheral face of gyroaxis 7 independently respectively, thereby can evenly disperse the pressing force of gyroaxis 7.
Fig. 9 stretches out the stereogram of sheet 24e as the elasticity of the present invention's the 5th embodiment elastic component for expression.This elasticity is stretched out sheet 24e and is formed a plurality of seams 54,55 towards central axis and its top 37e is divided into many places and constitutes by stretching out in tabular elasticity shown in the 1st embodiment on the sheet 24.In view of the above, can not make the part number increase following pressing force dispersion of situation to gyroaxis 7.
Figure 10 is the profile of expression the present invention the 6th embodiment bearing portion.Present embodiment is as the lid end bearing 6f of bearing components be fixed on and cover end bearing 6f and go up, stretch out sheet 25f as the elasticity of elastic component, and lid 10f forms one, and with above-mentioned identical synthetic resin formation.On lid end bearing 6f, form support gyroaxis 7 base bearing hole 56 arranged.In view of the above, make itself and lid 10f formation one, thereby when can further reduce part number and manufacturing process, can also improve intensity, make gyroaxis 7 be subjected to reliable supporting owing to can need not make in addition cover end bearing 6f.
Figure 11 is expression the present invention the 7th embodiment bearing portion profile, and present embodiment is the further improvement to the 6th embodiment shown in Figure 10.As shown in the figure, be installed in and be positioned at the position of outwards leaving base bearing hole 56 along radial direction stretch out sheet 25g as the elasticity of elastic component.Be fixed on lid 10g one integratedly by the root 38g that elasticity is stretched out sheet 25g exactly, be located at the position of leaving gyroaxis 7, form elongated shape and elasticity is stretched out sheet 25g.Like this, make elasticity stretch out sheet 24 and carry out the flexible deformation, thereby can push gyroaxis 7 with appropriate pressing force with the elastic force that relaxes.
In Figure 10 and Figure 11, make the position of inner face 58 below the base bearing hole 56 leave supporting rotating shaft 7 have base bearing hole 56 above the position of inner face 57 only be G, stretch out sheet 25f and form along elasticity, the direction of the contact site 39 of 25g staggers.In view of the above, owing to stretch out sheet 25f, 25g the moment that is added on the gyroaxis 7 is reduced, thereby be more suitable for adopting because of elasticity.
In sum, miniature motor of the present invention, owing on gyroaxis, apply side pressure by the elastic component that forms with rubber-like synthetic resin, make this gyroaxis form the elasticity face contact to a direction of bearing components inner peripheral surface, between the bearing components inner peripheral surface of this contact site and gyroaxis outer peripheral face, be provided with the gap, gyroaxis is not taken place along the vibration of the transverse direction of central axial direction relatively.
Therefore, can prevent motor vibration or the noise that causes because of the gyroaxis vibration.Therefore, the present invention is very effective to precision optical machinery sound equipment, the mapping device of disagreeable especially generation vibration.In addition,, make the miniature motor stable performance, and starting performance might as well because the present invention does not need to apply side pressure by magnetic force.In addition, owing to cancelled the spring of traditional use, can reduce part number and manufacturing process.
In addition, using occasion with resiliency synthetic resin formation bearing components and elastic component, even make the change in size of bearing components because of variations in temperature, if the internal diameter of the bearing portion of bearing components formed to make between bearing components inner peripheral surface and gyroaxis outer peripheral face has enough gaps, can be in the generation that is not subjected to prevent really under the influence of temperature change gyroaxis vibration.
In addition, Fig. 6-11, shown in each embodiment, on one side bearing portion is described, yet this another side bearing portion to each embodiment structure also can be suitable for.
In addition, the present invention also can be suitable for for example other rotary type miniature motor such as stepping motor or alternating current motor.
Claims (20)
1, miniature motor comprises that its inside is installed with the housing of stator (2) (3) and is configured in the interior rotor (4) of this housing (3); Its gyroaxis (7) bearing components (5 that is arranged on this housing (3), 5b, 5c, 6,6f) can be supported freely to rotate, it is characterized in that also comprising the outer peripheral face (23) that makes above-mentioned gyroaxis (7) along laterally the pushing of central axis (c) direction, make the elastic component that the inner peripheral surface (36) of above-mentioned outer peripheral face (23) and above-mentioned bearing components contacts (24,24b, 24e, 25,25f, 25g).
2, motor according to claim 1 is characterized in that forming above-mentioned bearing components and elastic component with synthetic resin, and this two member is formed one.
3, motor according to claim 2 is characterized in that above-mentioned synthetic resin is the nylon of combined fiberglass within it.
4, motor according to claim 2 is characterized in that described synthetic resin is the thermoplasticity synthetic resin that comprises any material in polyamide-based, polyacetals system and the polyethylene terephthalate system.
5, motor according to claim 1 is characterized in that described elastic component is pushed towards the vertical direction of above-mentioned relatively central axial direction.
6, motor according to claim 1, it is characterized in that described housing (3) include the casing (8) of end hollow tube-shape and therewith the chimeric fixing lid of peristome (9) of casing (8) (10,10f.10g).In addition, described bearing components comprise casing side bearing on the central part of the base plate (21) that is installed in above-mentioned casing (8) (5,5b) and be installed in above-mentioned lid (10,10f, 10g) the lid end bearing on (6,6f).(5, inner face 5b) stretches out along oblique the elastic component that formation makes an above-mentioned side, forms the elastic component that makes above-mentioned the opposing party, and (6, inner face 6f) (27,57) stretches out along oblique from above-mentioned lid end bearing from above-mentioned casing side bearing.
7, motor according to claim 6 is characterized in that above-mentioned lid end bearing (6) is installed in having on the end recess (20) of forming on the inner face central portion of above-mentioned lid (10).
8, motor according to claim 7 is characterized in that making above-mentioned the opposing party's elastic component (25) to have not the such length in inside that face (Fa) face of stretching out that forms from the inner face vertically (42a) of above-mentioned lid (10) can be accommodated in end recess (20).
9, motor according to claim 6 is characterized in that forming above-mentioned lid end bearing (6f) with synthetic resin, above-mentioned elastic component (25f, 25g) and above-mentioned lid (10f, 10g).
10, motor according to claim 9, it is characterized in that making the position of above-mentioned the opposing party's that base bearing hole (56) arranged inner face (58), to the direction of the contact site (39) of above-mentioned elastic component, stagger from the position of the side's that base bearing hole (56) is arranged of the above-mentioned gyroaxis of supporting (7) that forms at above-mentioned lid end bearing (6f) above-mentioned inner face (57).
11, motor according to claim 6, it is characterized in that at above-mentioned casing side bearing (5, centre 5b) forms supporting above-mentioned gyroaxis (7), enable free rotating through hole (33), at above-mentioned casing side bearing (5,5b) go up to form and above-mentioned through hole (33) be communicated with, have to motor interior (S) side opening end recess (34) arranged, with the direction installation of an above-mentioned side's elastic component (24) along the circumferential edges (35) of above-mentioned through hole (33).
12, motor according to claim 11, it is characterized in that making an above-mentioned side's elastic component (24) be positioned at above-mentioned through hole (33) near.
13, motor according to claim 11 is characterized in that making the root of an above-mentioned side's elastic component (24b) to be fixed in from above-mentioned gyroaxis (7) and leaves on some positions, and above-mentioned elastic component (24b) is formed long shape.
14, motor according to claim 11, it is characterized in that making above-mentioned elastic component (24,24b) have not that the formation face (F) of square end face (42) stretches out and can be accommodated in the above-mentioned length that has in the end recess (34) in above-mentioned casing side bearing (5) axial.
15, motor according to claim 1, it is characterized in that making above-mentioned elastic component (24,24b, 24e, 25,25f, 25g) has its thickness along with from the root to the top ends gradually attenuation the time, and tabular along the circumferential edges bending of the through hole of above-mentioned bearing components, in addition, above-mentioned top ends is had from its contact site (39) that contacts with above-mentioned gyroaxis outer peripheral face along the bandy shape of radial direction.
16, motor according to claim 15 is characterized in that the preceding state that is pressed at above-mentioned gyroaxis (7), makes the distance (D between the through hole inner peripheral surface (36) of the position of above-mentioned contact site (39) and the opposition side of relative central axis (c)
2) littler than the diameter (D) of above-mentioned gyroaxis.
17, motor according to claim 15, it is characterized in that at the preceding state of being pressed into of aforementioned gyroaxis, make the distance (D between the through hole inner peripheral surface (36) of opposition side of the top (41) of radial direction foreign side of above-mentioned top ends and relative above-mentioned central axis
3) bigger than the diameter of above-mentioned gyroaxis.
18, motor according to claim 15 is characterized in that making above-mentioned elastic component (24c) to have slick and sly crooked shape at no load condition from above-mentioned root (38c) to above-mentioned contact site (39c).
19, motor according to claim 15, it is characterized in that making above-mentioned elastic component (24d) to cut apart and form a plurality of small pieces (51 by tabular elasticity being stretched out sheet, 52,53) form, respectively that each small pieces are independent and be fixed on integratedly on the inner face (26d) of above-mentioned bearing components.
20, motor according to claim 15 is characterized in that by stretching out on the sheet in tabular elasticity, form many seams (54,55) towards central axial direction, and its top ends (37e) is divided into many and form above-mentioned elastic component (24e).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5105161A JPH06296343A (en) | 1993-04-07 | 1993-04-07 | Compact motor |
| JP105161/93 | 1993-04-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1093501A true CN1093501A (en) | 1994-10-12 |
Family
ID=14399983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93117874A Pending CN1093501A (en) | 1993-04-07 | 1993-09-20 | Miniature motor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH06296343A (en) |
| CN (1) | CN1093501A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101911439B (en) * | 2008-01-21 | 2013-03-20 | 日本电产三协株式会社 | Motor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NZ527457A (en) * | 2003-08-08 | 2006-02-24 | Arapal Developments Ltd | Electric motor with elastomeric bushes and pads located between components, typically for vibrating motors |
-
1993
- 1993-04-07 JP JP5105161A patent/JPH06296343A/en active Pending
- 1993-09-20 CN CN93117874A patent/CN1093501A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101911439B (en) * | 2008-01-21 | 2013-03-20 | 日本电产三协株式会社 | Motor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06296343A (en) | 1994-10-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1277345C (en) | Motor with earthing structure to reduce radio noise | |
| CN1299396C (en) | Connector having shielding piece | |
| US4037125A (en) | Small-sized direct current rotary electric appliance | |
| CN1897414A (en) | Vibration motor | |
| CN1960142A (en) | Motor | |
| CN1093501A (en) | Miniature motor | |
| US11101712B2 (en) | Motor, end cap and manufacturing method thereof | |
| CN1447498A (en) | Stepping dynamo | |
| CN1282290C (en) | Motors | |
| CN1215508C (en) | Small switch | |
| CN1134057A (en) | Motor | |
| US7173355B2 (en) | Bar-type vibration motor | |
| CN1761126A (en) | Geared motor and method for the assembly of the geared motor | |
| US11799352B2 (en) | Motor device with ground bus bar | |
| CN1823464A (en) | Stepping motor | |
| CN1278473C (en) | Battery driven machine using vibrator | |
| CN1450710A (en) | Magnet arrangement for rotating electrical machine | |
| CN1893228A (en) | Built-up commutator and micro-motor employing the same | |
| CN1170353C (en) | DC. motor with electric brush | |
| KR100724447B1 (en) | External rotor type motor | |
| KR100489830B1 (en) | A brushless type vibration motor | |
| CN1617427A (en) | Rotary motor | |
| CN1299424C (en) | Motor for electric power steering unit | |
| KR101198610B1 (en) | Stepping motor | |
| KR940012754A (en) | Brush plate equipment for electromechanical machines |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |