CN1052825C - Micro-motor, micro-vibration-motor for portable equipment and information transmitting device - Google Patents
Micro-motor, micro-vibration-motor for portable equipment and information transmitting device Download PDFInfo
- Publication number
- CN1052825C CN1052825C CN96105519A CN96105519A CN1052825C CN 1052825 C CN1052825 C CN 1052825C CN 96105519 A CN96105519 A CN 96105519A CN 96105519 A CN96105519 A CN 96105519A CN 1052825 C CN1052825 C CN 1052825C
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- CN
- China
- Prior art keywords
- bearing bore
- rotating shaft
- micro
- outer casing
- cylindrical outer
- 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.)
- Expired - Fee Related
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
- H02K23/58—Motors or generators without iron cores
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
- H02K33/18—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
- H02K7/065—Electromechanical oscillators; Vibrating magnetic drives
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
A microminiature motor which includes a cylindrical housing, a bearing house which is attached at the inside of the cylindrical housing and a stator coil which is composed of a magnet attaches to the outer circumference of the bearing housing, a coreless rotor which is arranged and installed between a cylindrical housing and the magnet and a rotor coil which is provided with a shaft in the center. In addition, a microrminiature motor is constituted of a current supply means which supplies a current to the rotor coil and of a bearing which supports the shaft attached to at least one end of the outer circumference of the bearing house.
Description
The present invention relates to use the portable electron device of dry cell, for example the low power consumption type micromotor (minimum motor) of video camera and small-sized acoustics.Particularly, the present invention relates to a kind of micro-vibration motor, it drives an eccentrically mounted weight rotation and produces vibration, is used for mancarried device, for example card-type calling set, wrist-watch, pocket telephone or blind person's signal receiver.In addition, the invention still further relates to use micro-vibration motor information is sent to carrier's information transmitting apparatus by vibration.
There has been demand in the prior art to the miniaturization of this micromotor.Developed the micromotor of the about 5mm of diameter.In recent years, the external diameter that has also proposed to comprise its shell is in the strong request of 3 to 4mm micromotor.
But this external diameter that comprises shell is difficult to carry out the machinery assembling at several millimeters micromotor.Under the situation of external diameter at 3 to 4mm micromotor, the diameter of winding wire is about 0.6mm.On continuous motor assembly line, can not handle the so lead of minor diameter and the commutator segment that width is slightly larger than lead suitably.
Therefore, the present invention relates to this manual operations micromotor that just can not assemble that need not be meticulous under present technical conditions.
Fig. 2 is the section of structure that is used for the existing micromotor of portable set.Micromotor is made up of stator 1 and rotor 2.Stator 1 comprises: cylindrical outer casing 11; By formed bearing bore portion 111 that an end of shell 11 is curved inwardly; Be installed in the magnet assembly 17 on the cylindrical surface of bearing bore portion 111 by binding agent 18; With the clutch shaft bearing 13 and second bearing 15 that form respectively by interference fit at bearing bore portion two ends, i.e. the clutch shaft bearing support 14 and second bearing support 16.
The other end of shell 11 has an end plate that end plate 19 wherein has been installed groove 112 is installed.The brush 192 that end plate 19 has lead-in wire 191 and is electrically connected with lead-in wire 191.On the other hand, rotor comprises: be located at shell 11 with predetermined air gap and the rotor coil assembly 21 between the magnet assembly 17; The rotor coil assembly supporting member 22 of supporting rotor coil block 21; Comprise many commutator assemblies 25 that are installed in the commutator segment 215 on rotor coil supporting member 22 1 ends; Electric current is offered the leading part 252 of rotor coil assembly 21 from commutator assembly 25; With rotating shaft 24 by above-mentioned first and second bearings 13 and 15 swivel bearings.Rotating shaft 24 is being fixed on the rotor coil assembly supporting member 22 by a fixture 23 on the one end.
The micro-vibration motor of this structure is by following work: when electric current by going between 191 and commutator assembly 25 when being added on the rotor coil assembly 21, the electric current that flows through in the latter 21 makes rotor coil assembly 31 and rotating shaft 24 do as a whole rotation with the magnetic action of magnet assembly.As a result, the counterweight (not shown) that off-centre is installed on rotating shaft 24 1 ends is rotated, and vibrates thus.
For the micro-vibration motor of the vibration dispensing device that is used for replacing " serge, serge " acoustical generator, the thickness that requires to be used for vibrating device is reduced to 5mm or following, particularly, requires diameter to be reduced to 3mm to 4mm.In the minimum micromotor of this diameter, the diameter of its rotating shaft will just can stand the vibration of counterweight at least more than 0.7mm.
At the rotating shaft diameter is in the micromotor of 0.7mm, and each parts is of a size of:
Rotating shaft external diameter: 0.7mm
Bearing bore portion internal diameter: 0.8mm
Magnet assembly internal diameter: 1.25mm
Magnet assembly external diameter: 2.6mm
Rotor coil assembly internal diameter: 3.0mm
Rotor coil assembly external diameter: 3.5mm
Internal diameter of outer cover: 3.8mm
From above-mentioned size as can be seen, the difference of the internal diameter of the external diameter of rotating shaft and bearing bore has only 0.1mm.That is to say that when rotating shaft 24 was placed in the center of bearing bore portion 111, the space around the rotating shaft 24 had only 0.05mm.
On the other hand, first and second bearings 13 and 15 must be set at the two ends of rotating shaft 24.Yet, in the space of 0.05mm, bearing 13 and 15 can not be installed.Just, in the existing method in bearing is inserted into bearing bore portion, can not reduce to the external diameter of micro-vibration motor on the value in 3mm to the 4mm scope.
Have, consider, because the thickness of magnet assembly 17 or rotor coil assembly 21 is limited physically, the maximum of micro-vibration motor can allow external diameter to be approximately 5mm.
In view of the foregoing, an object of the present invention is to provide a kind of micromotor, to solve above-mentioned difficulties.
Another object of the present invention provides a kind of micro-vibration motor that is used for portable set, and it has minimum size and thickness, and can send its vibration to human body (or carrier) with high efficiency.
A further object of the present invention provides a kind of information transmitting apparatus, uses the micro-vibration motor to vibrate the information that sends efficiently by it.
By providing a kind of micromotor to obtain above-mentioned purpose, this micromotor comprises: a stator, it comprise external diameter at 6mm or littler cylindrical outer casing, be located at the bearing bore in the cylindrical outer casing and be located at magnet assembly on the bearing bore outer peripheral face; A no rotor unshakable in one's determination is located between cylindrical outer casing and the described magnet assembly, and comprises a rotor coil assembly that has rotating shaft along its central axis; And electric supply installation, be used for to the rotor coil assembly power supply.Wherein at least one in the bearing of supporting shaft is installed on the outer peripheral face of bearing bore one end.
Micromotor of the present invention comprises: a cylindrical outer casing comprises the bearing bore installation portion and the installation of the end plate on its other end concave part that form by the one end is curved inwardly; One bearing bore is included on the one end bulge that forms groove and becomes the installation portion of the outer end of the cylindrical member of extending from bulge; Clutch shaft bearing is pressed in the formed groove of bulge; Second bearing has the groove that wherein is pressed into the bearing bore installation portion; With a magnet assembly, be located between first and second bearings.
In micro-vibration motor of the present invention, counterweight of eccentric installation on an end of rotating shaft.
According to information transmission device provided by the present invention, wherein be installed in the vibration that counterweight produced on rotating shaft one end, can be used as an information source at least by off-centre by the micro-vibration motor.
The applicant has found: the bearing that provides with said method can be reduced to 3 to the external diameter of micromotor to 4mm, and if its external diameter is set at 6mm, magnet assembly can increase thickness and rotate with high efficiency.That is, in the present invention, at least one bearing is not provided in a side of between bearing bore and the rotating shaft, and replaces bearing press mounting on the outer cylindrical surface of bearing bore one end.This has caused the external diameter of micromotor to reduce.
When with said method the end of a bearing press mounting at bearing bore on the time, the other end that is not provided with the bearing bore of magnet assembly forms bulge, so that another bearing is fitted in it.
In micromotor, magnet assembly, shell, rotating shaft and bearing bore constitute magnetic circuit, provide the rotor coil assembly of electric current to produce a revolving force because of electric current flows through magnetic circuit by commutator assembly.
By counterweight is installed in the micromotor rotating shaft prejudicially, micromotor just can become the micro-vibration motor that is used for portable set.Be used as under the situation of micro-vibration motor of portable set at it, it can be used as the device that sends at least a information.
By following description, can more clearly understand above-mentioned and other purpose of the present invention and feature with reference to accompanying drawing.
Fig. 1 is the profile that is used for the micromotor structure of portable set according to an embodiment of the invention;
Fig. 2 is the existing profile that is used to take the micromotor structure of formula equipment;
Fig. 3 is the profile of micro-vibration electric motor structure according to another embodiment of the present invention.
Fig. 1 is the profile that is used to take the micromotor structure of formula equipment, and its structure is the preferred embodiments of the present invention.
As shown in Figure 1, micromotor is made up of stator 1 and rotor 2.Stator 1 comprises: go up the made cylindrical outer casing 11 of the magnetic material that is made of iron, the bearing bore installation portion 111 that forms by an end of shell 11 is curved inwardly and by the tubular bearing bore made from shell 11 same materials 12 by it.Bearing bore 12 has a bulge 14 that is used to be pressed into bearing bore installation portion 111 at the one end, and has an installation portion 16 at the other end.Stator 1 further comprises: be fixedly mounted on the magnet assembly 17 on the cylindrical surface of bearing bore 12 by adhesive 18; Be fitted in the clutch shaft bearing 13 in the formed grooves 122 of bulge 14 of bearing bore 12; And have second bearing 15 that the installation portion 16 of bearing bore 12 is fitted in groove 151 wherein.
The other end of shell 11 has an end plate groove 112 is installed, and an end plate 19 of being made by insulating material wherein is installed.The brush 192 of lead-in wire 191 and lead-in wire 191 electrical couplings together is fixedly attached on this end plate by for example pegging graft.On the other hand, rotor 2 comprises: be located at rotor coil assembly 21 between shell 11 and the magnet assembly 17 with predetermined air gap; By the rotor coil assembly supporting member 22 that is used for supporting rotor coil block 21 that insulating material is made, this supporting member 22 has a protuberance at the one end; The commutator assembly 25 that comprises the commutator segment 251 on many protuberances that are installed in rotor coil assembly supporting member 22.Rotor 2 further comprises: a leading part 252 that is used for electric current is offered from commutator assembly 25 rotor coil assembly 21; With rotating shaft 24 by above-mentioned first and second bearings 13 and 15 swivel bearings.By rotor coil assembly supporting member 22 being fixed on the end of rotating shaft 24 by the made fixture 23 of for example stainless steel.
In order to reduce the thickness of rotor coil assembly 21 as far as possible, do not use the method for coiling copper cash on the coil balladeur train, and replace each circle of insulated copper wire is bonded together with adhesive.
Micromotor is worked like this: when electric current by going between 191 and commutator assembly 25 when being added on the rotor coil assembly, wherein flow through the rotor coil 12 of electric current and armature spindle and do as a wholely under the promotion of the magnetic circuit of being formed by magnet assembly 17, shell 11 and bearing bore 12, to rotate.
In this embodiment, clutch shaft bearing 13 is fitted in the bulge 14 of bearing bore 12, and the last installation portion 16 of bearing bore 12 is fitted in the groove of second bearing 15, thereby can reduce the distance between the outer peripheral face (external diameter) of the inner peripheral surface (internal diameter) of bearing bore 12 and rotating shaft 24.
The micro-vibration motor of another embodiment of the present invention is described below with reference to Fig. 3.In this embodiment, have fixture 23 to produce the vibration thus except rotating shaft 24 has a counterweight 100 and an other end that is installed in prejudicially on the one end, basic structure 5 Fig. 1 of micro-vibration motor are identical.As a result, rotate the counterweight 100 that is installed in prejudicially on rotating shaft 24 1 ends, to produce vibration.Can be used as an information source at least by wherein counterweight 100 off-centre being installed in the vibration that the micro-vibration motor on rotating shaft 24 1 ends produced.
The micro-vibration motor of this structure is by following work: when electric current by going between 191 and commutator assembly 25 when being added on the rotor coil assembly 21, the electric current that flows through in the latter 21 makes rotor coil assembly 31 and rotating shaft 24 as a unitary rotation with the magnetic action of magnet assembly.As a result, the counterweight (not shown) that off-centre is installed on rotating shaft 24 1 ends rotates, and produces vibration.
Micro-vibration motor for the vibration issue device of alternative skellat needs the thickness of vibrating device to be reduced to 5mm or littler, particularly, requires its diameter to be reduced to 3mm to 4mm.In the minimum micromotor of this diameter, its rotating shaft diameter should be 0.7mm at least to stand the vibration of counterweight.
Above-mentionedly be described in conjunction with the preferred embodiments of the present invention, but it is apparent, those of ordinary skills can carry out various changes and modification under the condition of the present invention not deviating from, thereby have covered all this change and modification because of it falls in the essential scope of the present invention by accompanying Claim.
In this embodiment, fixture be press-fit type or binding type, but also can be used in combination this two kinds of devices, perhaps use fixing by adhesive, replace press-fiting.
Because situation allows, what the material of micro-vibration motor components can be with existing motor is identical.
In micro-vibration motor of the present invention, bearing is arranged to: the distance between bearing bore and the rotating shaft is short as much as possible.Therefore, according to the present invention, it is littler that the micro-vibration motor can form external diameter.
In micro-vibration motor of the present invention, reduced the distance (poor) between the outer peripheral face (external diameter) of the inner peripheral surface (internal diameter) of bearing bore and rotating shaft, thereby improved the thickness of magnet assembly.Like this, under the situation that external diameter equates, micro-vibration motor of the present invention is higher than the motor of prior art on efficient.
According to the present invention, can form the littler micro-vibration motor of external diameter, portable miniature information transmitting apparatus can be provided.
The foregoing description of the preferred embodiments of the present invention is in order to describe and illustrative purposes.And do not mean that and be detailed or limit the invention under the described particular form, and can retrofit and change or obtain according to above-mentioned technology by enforcement of the present invention.The foregoing description is described for principle of the present invention and practical application thereof are described, so that those of ordinary skills can utilize the present invention and be suitable for desirable special-purpose with various by way of example or various remodeling.Scope of the present invention is limited by claim and equivalent thereof.
Claims (4)
1. micromotor comprises:
A stator, comprise external diameter at 6mm or littler cylindrical outer casing, be located at the bearing bore in the described cylindrical outer casing and be located at magnet assembly on the described bearing bore outer peripheral face;
A no rotor unshakable in one's determination is located between described cylindrical outer casing and the described magnet assembly, and comprises the rotor coil assembly that has rotating shaft along its central axis;
Electric supply installation is used for to described rotor coil assembly power supply;
It is characterized in that, also comprise:
The one the second bearings are used to support described rotating shaft, and at least one in described two bearings is installed on the end outer peripheral face of described bearing bore.
2. micromotor according to claim 1 is characterized in that: described cylindrical outer casing comprises a bearing bore installation portion that forms by the one end is curved inwardly and the end plate installation concave part on the other end; Described bearing bore comprises the installation portion of the end of the cylindrical member that a bulge that wherein forms groove and conduct are stretched out from described bulge on the one end; Described second bearing has a groove that the described installation portion of described bearing bore wherein is housed; Described magnet assembly is located between first and second bearings.
3. micro-vibration motor comprises:
A micromotor and a counterweight, described micromotor comprises:
A stator, comprise external diameter at 6mm or littler cylindrical outer casing, be located at the bearing bore in the described cylindrical outer casing and be located at magnet assembly on the described bearing bore outer peripheral face;
A no rotor unshakable in one's determination is located between described cylindrical outer casing and the described magnet assembly and comprises the rotor coil assembly that has a rotating shaft along its central axis;
Electric supply installation is used for to described rotor coil assembly power supply;
It is characterized in that, also comprise:
The one the second bearings are used to support described rotating shaft, and at least one in described two bearings is installed on the end outer peripheral face of described bearing bore,
Described counterweight is installed on the end of described rotating shaft prejudicially.
4. information transmitting apparatus comprises:
Micro-vibration motor and be used for the vibration that is produced by described micro-vibration motor is used as the device of at least one information source,
Described micro-vibration motor comprises:
A stator, comprise external diameter at 6mm or littler cylindrical outer casing, be located at the bearing bore in the described cylindrical outer casing and be located at magnet assembly on the described bearing bore outer peripheral face;
A no rotor unshakable in one's determination is located between described cylindrical outer casing and the described magnet assembly and comprises the rotor coil assembly that has a rotating shaft along its central axis;
Electric supply installation is used for to described rotor coil assembly power supply;
It is characterized in that, also comprise:
First and second bearings are used to support described rotating shaft, and at least one in described two bearings is installed on the outer peripheral face of described bearing bore one end;
A counterweight, it is installed on described rotating shaft one end prejudicially.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6530295 | 1995-03-01 | ||
| JP65302/95 | 1995-03-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1140924A CN1140924A (en) | 1997-01-22 |
| CN1052825C true CN1052825C (en) | 2000-05-24 |
Family
ID=13282987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96105519A Expired - Fee Related CN1052825C (en) | 1995-03-01 | 1996-03-01 | Micro-motor, micro-vibration-motor for portable equipment and information transmitting device |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR100363735B1 (en) |
| CN (1) | CN1052825C (en) |
| TW (1) | TW286447B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100360126B1 (en) * | 2000-01-04 | 2002-11-08 | 주식회사 삼부커뮤닉스 | Vibrator |
| KR20020000419A (en) * | 2000-06-26 | 2002-01-05 | 이형도 | Flat type-vibration motor |
| CN103166293A (en) * | 2011-12-09 | 2013-06-19 | 深圳富泰宏精密工业有限公司 | Wirelessly charging type portable electronic device and wireless charging system |
| CN104242540A (en) * | 2014-09-12 | 2014-12-24 | 青岛恒高电子有限公司 | Minitype cylindrical motor |
| CN104879836B (en) * | 2015-04-24 | 2017-08-25 | 广东美的制冷设备有限公司 | Control method, device and the dehumidifier of frequency conversion dehumidifier |
| CN215772886U (en) * | 2020-07-10 | 2022-02-08 | 日本电产株式会社 | Vibration motor and haptic device |
| CN216356413U (en) * | 2020-07-10 | 2022-04-19 | 日本电产株式会社 | Vibration motor and haptic device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4019075A (en) * | 1970-09-26 | 1977-04-19 | Canon Kabushiki Kaisha | Ironless rotor windings of rotary coils in miniature electric machines |
| US5373207A (en) * | 1993-09-17 | 1994-12-13 | Tokyo Parts Industrial Co., Ltd. | Brushless vibrator motor for a wireless silent alerting device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05344700A (en) * | 1992-06-10 | 1993-12-24 | Tokyo Parts Ind Co Ltd | Cylindrical coreless motor |
-
1996
- 1996-02-27 KR KR1019960004729A patent/KR100363735B1/en not_active IP Right Cessation
- 1996-02-29 TW TW085102393A patent/TW286447B/zh active
- 1996-03-01 CN CN96105519A patent/CN1052825C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4019075A (en) * | 1970-09-26 | 1977-04-19 | Canon Kabushiki Kaisha | Ironless rotor windings of rotary coils in miniature electric machines |
| US5373207A (en) * | 1993-09-17 | 1994-12-13 | Tokyo Parts Industrial Co., Ltd. | Brushless vibrator motor for a wireless silent alerting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1140924A (en) | 1997-01-22 |
| KR960036254A (en) | 1996-10-28 |
| KR100363735B1 (en) | 2003-02-11 |
| TW286447B (en) | 1996-09-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20000524 |