CN110289727A - Vibration generating arrangement and electronic equipment - Google Patents
Vibration generating arrangement and electronic equipment Download PDFInfo
- Publication number
- CN110289727A CN110289727A CN201910121992.6A CN201910121992A CN110289727A CN 110289727 A CN110289727 A CN 110289727A CN 201910121992 A CN201910121992 A CN 201910121992A CN 110289727 A CN110289727 A CN 110289727A
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- CN
- China
- Prior art keywords
- vibration generating
- rotor
- generating arrangement
- axis
- bearing portion
- Prior art date
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Classifications
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- 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
- H02K7/061—Means for converting reciprocating motion into rotary motion or vice versa using rotary unbalanced masses
- H02K7/063—Means for converting reciprocating motion into rotary motion or vice versa using rotary unbalanced masses integrally combined with motor parts, e.g. motors with eccentric rotors
-
- 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
- H02K7/08—Structural association with bearings
Abstract
The present invention provides a kind of vibration generating arrangement and electronic equipment, and consumption electric current is few and noise is low, moreover, being able to carry out stable movement at low ambient temperatures, and the service life is long.Have: rotor (3), it has weight (34) and bearing portion (31), weight (34) is rotatably arranged around rotation axis (C), at least there is center of gravity relative to rotation axis (C) and eccentric, bearing portion (31) is made of the ball bearing with inner ring (31A) and outer ring (31B)；Axis (41), insertion run through the through hole (31c) for the inner ring (31A) for being formed in bearing portion (31), are pivotably supported rotor (3)；And limiting unit (5), it is more configured at the inside of diameter direction (R) compared with weight (34), limits the movement of the axis direction (Z) of rotor (3).
Description
Technical field
The present invention relates to vibration generating arrangements and electronic equipment.
Background technique
All the time, in the electronic equipments such as portable phone, vibration, which will be used as, send a telegram here or various information etc. are transmitted
To the means of user.In order to which such vibration occurs, in electronic equipment of various, such as vibration generating arrangement (vibration horse is used
Up to).
Moreover, in recent years, in the electronic information equipments such as smart phone (portable phone) or tablet computer, for example, in addition to
When the incoming call of phone or mail or other than the notification means of alarm clock, over the display or when touching each button, also self-vibration in future
The vibration of dynamic generating device is as its confirmation.In addition, in game machine etc., to give various tactiles as mesh to user
, use vibration caused by vibration generating arrangement.It is presented as in this way, giving various information by vibration various
It is extended in the electronic equipment of various kinds.
As the vibration generating arrangement vibrated as described above, eccentric weight is for example fixed on rotation by previous use
The vibrating motor of the rotary shaft of the motor of type.As such vibration generating arrangement using motor, rough classification and enumerating makes
It is (flat with the vibration generating arrangement and use Coin shape of motor that is long along rotation axis direction and becoming the small cylindrical shape of diameter
Shape) motor vibration generating arrangement two types.
In addition, the vibration generating arrangement as the motor for using Coin shape (flat), proposes for example using by brush
The vibration generating arrangement of the motor with brush of power supply (for example, referring to patent document 1).In addition, as the horse for using Coin shape
The vibration generating arrangement reached, in addition to the foregoing, it is also proposed that use the vibration generating arrangement of following brushless type motor: by
Hall element (ホ ー Le sub-prime) detection rotor rotation position, change the polarity of driving signal and drive simultaneously (for example, referring to
Patent document 2).
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Application Publication 2008-520180 bulletin；
Patent document 2: Japanese Unexamined Patent Publication 2015-199008 bulletin.
Summary of the invention
Subject to be solved by the invention
But all the time, for vibration generating arrangement, all the time, the point as shown in (1) below ~ (4) is required to change
It is kind.
(1) reduction of electric current is consumed；
(2) drive when (especially intermittent driving when starting/stopping when) noise reduce；
(3) raising in service life；
(4) operating stably under low temperature environment.
In existing vibration generating arrangement, the principal element difficult as the improvement of point shown in above-mentioned (1) ~ (4),
Enumerate the characteristic of the bearing of vibrating motor.That is, in the bearing of existing vibrating motor, it is however generally that, it is burnt using oil is penetrated into
Oil-containing metal bearing made of metal is tied, but since the oil-containing metal bearing torque loss is big, thus there is consumption electric power and increase
This problem.In addition, about oil-containing metal bearing, when rotated, by the oil that sintering metal is kept be exuded to surface into
Row lubrication, but especially in motor starting/stopping, the amount for being exuded to the oil on surface is few, and there are metal bearing and axis are mutual
Mutually friction and lead to the problem of noise this.In addition, in movement at low temperature (especially on startup), oil is difficult to be exuded to table
Face, thus movement is possible to become unstable or does not obtain desired characteristic.
The present invention is made in view of the above subject, it is intended that providing following vibration generating arrangement and use
The electronic equipment of the vibration generating arrangement: consumption electric current is few and noise is low, moreover, being able to carry out at low ambient temperatures steady
Fixed movement, and the service life is long.
Solution for solving the problem
In order to solve the above problems, vibration generating arrangement of the invention is characterized in that having: rotor has weight and axis
Bearing portion, weight are rotatably arranged around rotation axis, at least have center of gravity relative to aforementioned rotation axis and eccentric, bearing
Portion is made of the ball bearing with inner ring and outer ring；Axis, insertion run through the aforementioned inner ring for being formed in aforementioned axis bearing portion
Through hole is pivotably supported foregoing rotor；And limiting unit, the inside in diameter direction is more configured at compared with aforementioned weight,
Limit the movement of the axis direction of foregoing rotor.
According to the present invention, ball bearing is used for the bearing portion of rotor, as a result, with use oil-containing as prior art
The case where metal bearing, is compared, and sliding when due to rotation is smooth, it is thus possible to consumption electric power is reduced, also, noise also reduces,
In addition, life characteristic also improves.Moreover, because influenced caused by the low-temperature characteristics of oil it is small, thus even if at low ambient temperatures
Also it is able to carry out stable movement.
In addition, have the limiting unit of the movement of the axis direction of limitation rotor, even if as a result, when impact is applied to rotor,
Also rotor can be prevented to be detached from from axis, further, it is possible to prevent in the inner ring and outer ring for constituting the bearing portion being made of ball bearing
Or impression is generated in ball.
In addition, vibration generating arrangement of the invention is preferably, it is in the above-described configuration, aforementioned interior about aforementioned axis bearing portion
At least part of the outer surface of circle with from the another side in aforementioned axis direction towards one end and outer diameter is gradually reduced.
According to the present invention, the outer diameter for the inner ring that bearing portion has is gradually reduced, even if as a result, due to for example due to punching
Hit etc. and cause rotor motion to axis direction one end in the case where, constitute the inner ring of bearing portion also in the side separated with ball
It is unfettered upwards, it is thus possible to avoid generating impact force between inner ring and outer ring and ball and generating impression in each component
Deng.
In addition, vibration generating arrangement of the invention is it is further preferred that in the above-described configuration, aforementioned axis bearing portion is in aforementioned inner ring
At least part of inner surface include internal diameter straight region certain in aforementioned axis direction.
According to the present invention, the inner surface for the inner ring having in bearing portion includes straight region, and bearing portion and axis can as a result,
It is assembled by ground, is able to carry out stable movement.
In addition, vibration generating arrangement of the invention is it is further preferred that in the above-described configuration, it is aforementioned about aforementioned axis bearing portion
At least part of the inner surface of outer ring with from the one end in aforementioned axis direction towards another side and internal diameter is gradually expanded.
According to the present invention, the internal diameter for the outer ring that bearing portion has is gradually expanded towards another side, as a result, when assembling is wrapped
When rotor containing bearing portion, firstly, ball is assemblied in inner ring side, then, ball can be held in intermediate and assembled simultaneously
Outer ring, thus operability and productivity raising when manufacture.
In addition, vibration generating arrangement of the invention is it is further preferred that in the above-described configuration, aforementioned axis bearing portion is in aforementioned outer ring
At least part of inner surface include internal diameter straight region certain in aforementioned axis direction.
According to the present invention, the outer ring that bearing portion has inner surface include straight region, as described above group as a result,
Operability and productivity when cartridge rotor improve more significantly.
In addition, vibration generating arrangement of the invention is also possible to following composition: in the above-described configuration, aforementioned axis bearing portion is
At least one party of aforementioned inner ring or aforementioned outer ring is made of resin material.
According to the present invention, the inner ring or outer ring for constituting bearing portion are made of resin material, as a result, due to can reduce material
Cost, also, improved with the sliding property of ball made of metal, it is thus possible to consumption electric current is reduced, moreover, noise also can
It reduces.
In addition, vibration generating arrangement of the invention is also possible to following composition, in the above-described configuration, aforementioned axis is opposite
It is integrally formed in aforementioned axis bearing portion.
According to the present invention, axis is integrally formed with bearing portion (that is, and inner ring), and thereby, it is possible to carry out more stable movement.
In addition, vibration generating arrangement of the invention is preferably, in the above-described configuration, it is also equipped with from aforementioned axis direction
The positioning element of another side support aforementioned axis bearing portion.
According to the present invention, by having the positioning element from another side support shaft bearing portion, so as to prevent rotor with
Stator and coil interference.
In addition, vibration generating arrangement of the invention is also possible to following composition: in the above-described configuration, aforementioned limiting unit is
It is set to the upper plate portion for accommodating the shell of foregoing rotor and aforementioned axis.
According to the present invention, limiting unit is provided with by the upper plate portion in shell, so as to limit the axis direction of rotor
It is mobile, it is thus possible to prevent rotor from falling from axis.
In addition, vibration generating arrangement of the invention is also possible to following composition: in the above-described configuration, foregoing rotor has
The rear yoke (back yoke) of aforementioned weight is installed, a part of aforementioned limiting unit and aforementioned rear yoke are right in aforementioned axis direction
It sets.
According to the present invention, a part of limiting unit and rear yoke are opposed in axial direction, as a result, when rotor axially moves
When, rear yoke is directly contacted with limiting unit.As a result, due to can effectively limit the movement of the axis direction of rotor, it is thus possible to can
Prevent rotor from falling from axis by ground.
In addition, vibration generating arrangement of the invention is also possible to following composition: in the above-described configuration, aforementioned limiting unit is set
It is placed in foregoing rotor.
According to the present invention, limiting unit is set to any surface of rotor, as a result, as described above, can limit rotor
Moving for axis direction and prevent rotor from falling from axis.
In addition, vibration generating arrangement of the invention is also possible to following composition: in the above-described configuration, the one of aforementioned axis
End side is fixed with the component extended along diameter direction, in the face opposed with foregoing rotor in the component that diameter direction extends, if
It is equipped with aforementioned limiting unit.
According to the present invention, the component of the one end for being fixed on axis extended along diameter direction is provided with limiting unit, is as a result,
Make to be the composition for not having shell, also as described above, the moving for axis direction of rotor can be limited and prevent rotor from axis
It falls.
In addition, vibration generating arrangement of the invention is preferably, in the above-described configuration, when being with the another side of aforementioned axis
When benchmark, aforementioned weight is set to the extreme higher position in foregoing rotor.
According to the present invention, weight is set to the extreme higher position of rotor, as a result, since the range that weight can be arranged expands,
Thus it is capable of increasing weight.As a result, since the centrifugal force for acting on the weight of the rotor of rotation becomes larger, it is thus possible to make to be occurred
Vibration increase.
Electronic equipment of the invention is characterized in that having above-mentioned any vibration generating arrangement.
According to the present invention, due to having above-mentioned any vibration generating arrangement, thus consumption electric current is few and noise is low, and
And stable movement is able to carry out at low ambient temperatures, also, the service life is long.
In addition, electronic equipment of the invention is preferably following composition: in the above-described configuration, having can be from external view
The visuognosis portion of identification and the opening portion for being set to foregoing visual identification portion, foregoing rotor are configured in aforementioned opening portion.
According to the present invention, by having above-mentioned composition, to allow users to the state of identification rotor rotation.As a result, by
In vibration can also be utilized to transmit information to user, also, information is transmitted using vision, it is thus possible to improve and pass to user
Pass the function of information.
The effect of invention
Vibration generating arrangement according to the present invention, by having above-mentioned composition, so as to reduce consumption electric power, also, noise
Also it reduces, life characteristic also improves, moreover, being able to carry out stable movement at low ambient temperatures.In addition, even if when punching
It hits when being applied to rotor, rotor can also be prevented to be detached from from axis, further, it is possible to prevent the bearing being made of in composition ball bearing
Impression is generated in the inner ring and outer ring or ball in portion.
In addition, electronic equipment according to the present invention, due to having above-mentioned vibration generating arrangement according to the present invention, because
And consume that electric current is few and noise is low, moreover, being able to carry out stable movement at low ambient temperatures, also, the service life is long.
Detailed description of the invention
Fig. 1 is the electronic equipment that schematically explanation has the vibration generating arrangement as first embodiment of the invention
Figure, be an example as electronic equipment and the top view of clock and watch be shown.
Fig. 2 is the sectional view for schematically illustrating the vibration generating arrangement as first embodiment of the invention.
Fig. 3 is the sectional view for schematically illustrating the vibration generating arrangement as second embodiment of the present invention.
Fig. 4 is the sectional view for schematically illustrating the vibration generating arrangement as third embodiment of the present invention.
Specific embodiment
Hereinafter, enumerating the embodiment of vibration generating arrangement and electronic equipment of the invention, about its composition, suitably refer to
It Fig. 1 ~ Fig. 4 and is described in detail simultaneously.In addition, about each attached drawing used in the following description, it is for easy understanding of the invention
Vibration generating arrangement and electronic equipment feature, for convenience's sake, exist amplification and be illustrated as the feelings of part being characterized
Condition has that dimensional ratios of each component etc. are different from reality.In addition, the material illustrated in the following description
Material, size etc. are an examples, and the present invention is not limited thereto, can be suitably changed within the scope of unchanged purport and real
It applies.
[first embodiment]
Hereinafter, being described in detail to first embodiment of the invention.
(electronic equipment)
Fig. 1 is the top view of the clock and watch (electronic equipment) 1 of first embodiment.
As shown in Figure 1, the clock and watch 1 of present embodiment are the analog electronic watches of Wristwatch-type.The clock and watch 1 have clock and watch master
Body 11 and the band 12 for being installed on clock and watch main body 11.
Clock and watch main body 11 have shell 13, the surface for being set to shell 13 glass 14, be set to the inside of glass 14
The component for clock and watch hornbook 15 (visuognosis portion) and be set in shell 13.Hornbook 15 can be from the outside through
The visuognosis by glass 14.In hornbook 15, express the number etc. for showing the moment.In addition, can be revolved on hornbook 15
Turn ground and is configured with a plurality of needles 16 (hour hands, minute hand and second hand).Moreover, being provided with hole 17 (opening portion) in hornbook 15.
In shell 13, as the component for clock and watch, accommodates the machine core of illustration omitted and illustrate details later
The vibration generating arrangement 2 of present embodiment.Machine core has driving unit and battery of illustration omitted etc., controls the drive of a plurality of needles 16
It is dynamic.In the example shown in the series of figures, the vibration generating arrangement 2 of present embodiment is configured in hole 17.
The clock and watch 1 of electronic equipment as present embodiment are by having above-mentioned composition, so that vibration can for example made
Occur for notification means such as alarm clocks, information is transmitted to user using vibration.
In addition, the clock and watch 1 of present embodiment can make user recognize the rotor illustrated later (referring to Fig. 2 as needed
In symbol 3 etc.) rotation state.In the example shown in the series of figures, the rotor 3 that vibration generating arrangement 2 has is to be configured at text
Mode in the hole 17 of plate 15 is constituted.As a result, since vibration can also be utilized to transmit information to user, also, utilize vision
To transmit information, it is thus possible to improve the function of transmitting information to user.In addition, as described above, as can be via hole 17
And in the case where the composition of a part of the internal mechanism of visuognosis vibration generating arrangement 2, clock and watch 1 can be further increased
Aesthetic appearance.
In addition, the clock and watch 1 of present embodiment are not limited to above-mentioned composition, for example, it is also possible to be formed by transparent component
Shell 13 or hornbook 15 and can the in-built mode of visuognosis constitute.
In addition, the clock and watch (electronic equipment) 1 according to present embodiment, are later illustrated details, due to having
The vibration generating arrangement 2 of present embodiment, thus consumption electric current is few and noise is low, moreover, can at low ambient temperatures
Stable movement is carried out, also, becomes the clock and watch of service life length.
(vibration generating arrangement)
Fig. 2 is the sectional view for schematically showing the vibration generating arrangement 2 of first embodiment.
As shown in Fig. 2, vibration generating arrangement 2 is vibration generating arrangement (the BLDC motor: brushless direct current horse of brushless
Up to).
The vibration generating arrangement 2 of present embodiment has rotor 3, stator 4 and limiting unit 5 and generally comprises.In more detail
For, vibration generating arrangement 2 has: rotor 3, has weight 34 and bearing portion 31, and weight 34 is rotatable around rotation axis C
Ground setting, at least has center of gravity relative to rotation axis C and eccentric, bearing portion 31 is by the rolling with inner ring 31A and outer ring 31B
Pearl bearing is constituted；Axis 41, insertion run through the through hole 31c for the inner ring 31A for being formed in bearing portion 31, are pivotably supported and turn
Son 3；And limiting unit 5, it is more configured at the inside of diameter direction R compared with weight 34, limits the movement of the axis direction Z of rotor 3.
In addition, in the following description, the direction rotation axis C of rotor 3 is known as axis direction, also, label symbol Z,
It is known as diameter direction from rotation axis C with the direction (that is, diameter direction of rotor 3) of radiated entend for orthogonal with axis direction Z, and
And label symbol R.In addition, by circumferential direction is referred to as around the circumferential direction of rotation axis C.
Rotor 3 has bearing portion 31, rear yoke 32, magnet 33 and weight 34 and constitutes.As shown in Fig. 2, rotor 3 is contained in
In shell 7.
Bearing portion 31 is made of ball bearing as shown in Figure 2, by inner ring 31A, outer ring 31B, ball (rolling element) 31C
And the holder (ball distance ring) of illustration omitted is constituted.In the example shown in the series of figures, as described above, axis 41 insertion run through in
Enclose the through hole 31c of 31A.In addition, about bearing portion 31, outer ring 31B for example, by bonding or deposition or the means such as chimeric and
It is fixed on the surface in a direction of rear yoke 32.
The friction when ball bearing mitigation rotation of bearing portion 31 is constituted, and supports the load and axial direction of radial direction simultaneously
The load in direction.More specifically, multiple ball 31C are surrounded by the inner ring 31A and outer ring 31B that become rail ring, via the rolling
Pearl 31C and transmit added weight.In addition, in the example shown in the series of figures, axis 41 is inserted into the through hole 31c for running through inner ring 31A, and
And outer ring 31B is fixed on rear yoke 32.That is, the inner surface 31b of inner ring 31A is connected to axis 41, by inner ring 31A's about bearing portion 31
The inner surface 31e of outer surface 31a and outer ring 31B surrounds ball 31C, also, the outer surface 31d of outer ring 31B and elaboration later are detailed
The magnet 33 of details condition connects.Then, when rotor 3 rotates, along with the rotation of outer ring 31B, ball 31C is voluntarily rotated, by
This, can be with low friction spring bearing.
Bearing portion 31 includes more preferably that internal diameter is certain on axis direction Z at least part of the inner surface 31b of inner ring 31A
Straight region.In example out shown in Fig. 2, the inner surface 31b of inner ring 31A integrally becomes straight region.In this way, in bearing
The inner surface 31b for the inner ring 31A that portion 31 has includes straight region, as a result, reliably assembles bearing portion 31 and axis 41,
It is able to carry out stable movement.
Bearing portion 31 is also possible to inner ring 31A or at least one party of outer ring 31B is made of resin material.In this way, constituting axis
Either inner ring 31A or outer ring 31B of bearing portion 31 or both sides are made of resin material, and thereby, it is possible to reduce bearing portion 31
Material cost.At the same time, since the sliding property of ball 31C made of metal and inner ring 31A and outer ring 31B improves, because
And can reduce consumption electric current, moreover, noise also can reduce.
In addition, the material of ball 31C is generally metal material, but can also be using such as ball of ceramics or resin.
Afterwards yoke 32 have with ring-type formed yoke main body 35, yoke main body 35 inner peripheral near joint portion 36, Yi Jicong
The mounting portion 37 that the outer peripheral edge of yoke main body 35 extends, these components are integrally formed.Yoke main body 35 is with the annulus orthogonal with axis direction Z
Plate is formed, and is coaxially configured with rotation axis C.Yoke main body 35 is more configured at one end on axis direction Z compared with bearing portion 31
Side.Joint portion 36 is the region for being set to the plate near the inner peripheral of yoke main body 35.At joint portion 36, towards axis direction Z
On another party side interarea 37a on, engagement is fixed with the outer ring 31B of bearing portion 31.Mounting portion 37 is from the periphery of yoke main body 35
A part of edge extends towards the outside of diameter direction R.Mounting portion 37 and the shape of weight 34 are accordingly formed, for example, central angle
It is formed with about 180 ° of fan-shaped.
Magnet 33 is set on the interarea towards another party side of axis direction Z in the yoke main body 35 of rear yoke 32.As magnetic
Iron 33 can use the material used all the time in brushless DC motor etc. without any restriction.
On the interarea 37a towards another party side of axis direction Z in the mounting portion 37 of rear yoke 32, weight 34 and magnet 33
Compared to the outside for being more configured at diameter direction R.Although the detailed illustration is omitted in Fig. 2, weight 34 be formed as be with rotation axis C
The fan-shaped at center, for example, the central angle from axis direction Z is formed in a manner of becoming such as about 180 °.Weight 34 as a result,
Center of gravity become state relative to rotation axis C and eccentric.On the other hand, the size and magnet on the axis direction Z of weight 34
Size on 33 axis direction Z is substantially uniform.
As the material of weight 34, although not limiting particularly, it is able to use the tungsten of metal for example high as specific gravity
Deng.
In addition, weight 34 relative to mounting portion 37 interarea 37a and engage fixation for example, by bonding agent or welding etc..
Stator 4 has axis 41, base portion 42 (support plate), coil 43 and driving portion 44.
Axis 41 is coaxially configured with rotation axis C.As described above, axis 41 is inserted into the through hole 31C for running through bearing portion 31,
It is assembled relative to bearing portion 31.Axis 41 is constituted via ball bearing as a result, bearing portion 31 and be pivotably supported rotor 3
It is whole.Axis 41 has the second end of another party side of the first end 41a (one end) and axis direction Z of a side side of axis direction Z
41b (other end).In addition, the exemplary axis 41 about diagram, first end 41a is with from the shell 7 for illustrating details later
The mode that the inner surface side for the upper plate portion 71 being had enters is constituted.
The opposite side for the yoke main body 35 that yoke 32 has after base portion 42 clips on axis direction Z magnet 33 and is configured at.
Base portion 42 is for example installed in the base plate 72 in shell 7.In addition, base portion 42 is for example in the mode orthogonal with axis direction Z
With disk-shaped formation.
In the vertical view central portion of base portion 42, it is formed with axis supported hole 47.The axis supported hole 47 and rotation axis C are coaxially
It is formed.In addition, the first end 41a of another party side of the axis direction Z in axis 41 can not be inserted into the relative rotation runs through axis branch
Support hole 47.
Coil 43 is set on the interarea 42a in the region opposed with the magnet 33 of rotor 3 in base portion 42.
Driving portion 44 is set on the interarea 42a of base portion 42.Driving portion 44 is connected to the external power supply of illustration omitted, and
And it is electrically connected relative to coil 43.In addition, driving portion 44 has the Hall element of illustration omitted, detected by the Hall element
It is set to the polarity of the magnet 33 of rotor 3, the electric current supplied from external power supply is controlled according to the polarity detected, and simultaneously will
The electric current is supplied to coil 43.If electric current is supplied to coil 43, magnetic force is generated in coil 43.Then, pass through coil 43
In generated magnetic force and magnet 33 magnetic force interaction and cause rotor 3 to rotate centered on rotation axis C.Pass through
The rotation and cause the centrifugal force of weight 34 to act on rotor 3 and vibrate.
Limiting unit 5 limits the movement of the axis direction Z of rotor 3.In the example illustrated in Fig. 2, limiting unit 5 is arranged
The inner surface side of upper plate portion 71 in shell 7.In addition, diagram example in limiting unit 5 compared with the weight 34 of rotor 3 more
It is configured at the inside of diameter direction R.In the present embodiment, due at least part of limiting unit 5 with rear yoke 32 on axis direction Z
It is opposed, thus when axially Z is mobile for rotor 3, limiting unit 5 is directly contacted with rear yoke 32, limits the axially Z of rotor 3
On a side side (side opposite with stator 4) movement.Thereby, it is possible to be reliably prevented rotor 3 to fall off from axis 41, also,
It can prevent from generating impression etc. in inner ring 31A, the outer ring 31B and ball 31C for constituting bearing portion 31.
As the material of limiting unit 5, do not limit, it is preferable to use the resinous wood being well known in the art particularly
Material, such as the polyamide or acetal resin of excellent in sliding property.
Positioning element 6 is turned from another side (side the second end 41b of axis 4) support shaft bearing portion 5 on axis direction Z
Positioning on the axis direction Z of son 3.The exemplary positioning element 6 of diagram is made of cricoid component, and the insertion of axis 41 runs through center
Through hole.
As the example illustrated in present embodiment in brushless DC motor, magnet 33 and coil 43 are mutual
The power of pulling works always.Therefore, in vibration generating arrangement 2,4 (coil of rotor 3 (magnet 33) and stator in order to prevent
43) interfere, it is necessary to carry out the positioning of bearing portion 31 (rotor 3) so that bearing portion 31 will not be crossed on axis direction Z it is set
Position and be moved to one end.
In the present embodiment, as described above, by having the positioning element 6 from another side support shaft bearing portion 31, from
And the interference (that is, interference of rotor 3 and stator 4) of magnet 33 Yu coil 43 can be prevented.Therefore, it can prevent in rotor
Due to being lost caused by sliding friction between 3 and stator 4.
As the material of positioning element 6, do not limit particularly, for example, it can be considered that mechanical characteristic or heat resistance etc., and
Simultaneously using the resin material etc. used in the art all the time.
In addition, illustrating details in this second embodiment, additionally it is possible to interior using for example having bearing portion 31
Enclose 31A and the integrated composition of positioning element 6.
Shell 7 is the framework for accommodating the main composition part of vibration generating arrangement 2 of present embodiment, by upper cover part 7A and
Base plate 72 is constituted, and upper cover part 7A is with bottomed tube formation and has upper plate portion 71.As the material of shell 7, do not limit particularly
It is fixed, it can be without any restriction using the metal material or resin material used in the art all the time.
The base plate 72 of shell 7 be for example installed on it is having the vibration generating arrangement 2 of present embodiment, be configured at Fig. 1 institute
The circuit substrate etc. of the illustration omitted in clock and watch (electronic equipment) 1 shown.
According to the vibration generating arrangement 2 for the present embodiment for having above-mentioned composition, using upper in the bearing portion 31 of rotor 3
The ball bearing of composition is stated, as a result, compared with the case where using oil-containing metal bearing as prior art, when due to rotation
Sliding it is smooth, it is thus possible to reduce consumption electric power, also, noise also reduces, in addition, life characteristic also improves.Moreover, because
There is no influences caused by the low-temperature characteristics of oil, thus stable movement is able to carry out at low ambient temperatures.
Moreover, the vibration generating arrangement 2 according to present embodiment, has the limitation of the movement of the axis direction Z of limitation rotor 3
Portion 5, as a result, for example, even if can also prevent rotor 3 to be detached from from axis 41 when impact is applied to rotor 3, in addition it is possible to anti-
Only impression is generated in the inner ring 31A and outer ring 31B or ball 31C for constituting bearing portion 31.
In addition, in the present embodiment, the composition that can also be integrally formed using axis 41 relative to bearing portion 31.
That is, axis 41 can also be integrally formed with the inner ring 31A for constituting bearing portion 31.Thereby, it is possible to carry out more stable movement, and
And it can reduce installation cost.
In addition, in the present embodiment, although the detailed illustration is omitted, limiting unit 5 also be can be set in rotor 3.I.e.
Make as such composition, also as described above, the movement of the axis direction Z of rotor 3, anti-rotation stop can be limited
Son 3 is fallen from axis 41.
In addition, in the present embodiment, it is further preferred that on the basis of the second end (another side) 41b of axis 41
When, the weight 34 that rotor 3 has is set to the extreme higher position in rotor 3.In this way, weight 34 is set to the highest order of rotor 3
It sets, as a result, since the range that weight 34 can be arranged expands, it is thus possible to significantly constitute weight 34.As a result, due to acting on
The centrifugal force of the weight 34 of the rotor 3 of rotation becomes larger, it is thus possible to increase vibration occurred.
In addition, can also set ruler for example be arranged in the upper plate portion 71 of shell 7 in the vibration generating arrangement 2 of present embodiment
Very little hole, or upper plate portion is constituted by transparent component.As a result, in the shape for being packed into clock and watch 1 as example as shown in Figure 1
Under state, from the R of diameter direction, it can be configured in a manner of exposing from the hole of hornbook 15 17 as at least part of rotor 3
Composition.
When manufacturing the vibration generating arrangement 2 of present embodiment, when assembling rotor 3 and axis 41, firstly, will be by ball axis
The bearing portion 31 of composition is held by being bonded or the methods of chimeric being fixed on rear yoke 32 and assemble rotor 3.Then, axis 41 is inserted into
The through hole 31c for being formed in the inner ring 31A of bearing portion 31 is run through, thereby, it is possible to assemble rotor 3 and axis 41.
[second embodiment]
Hereinafter, the vibration generating arrangement 200 to second embodiment of the present invention is described in detail.
In addition, in the vibration generating arrangement 200 of second embodiment described below, for it is above-mentioned first real
The vibration generating arrangement 2 for applying mode is similarly constituted, and the same symbol is sometimes assigned in figure and description is omitted.
Fig. 3 is the sectional view for schematically showing the vibration generating arrangement 200 of second embodiment.
As shown in figure 3, the vibration generating arrangement 2 relative to above-mentioned first embodiment, the vibration hair of present embodiment
Generating apparatus 200 is different on following point: the bearing portion 231 having about rotor 203, the outer surface 231a's of inner ring 231A
At least part is with from the another side (side first end 41a of axis 41) on axis direction Z towards one end (the second of axis 41
The end side 41b) and outer diameter is gradually reduced.
In addition, the inner ring 231A of bearing portion 231 is in the exemplary vibration generating arrangement 200 of diagram with substantially cylindric
It is formed, inner ring 231A extends to the position for being connected to the base portion 42 of fixing axle 41.Vibration generating arrangement 200 is not required to as a result,
It will positioning element 6 (referring to Fig. 2) as the vibration generating arrangement 2 of first embodiment has.That is, in this embodiment party
In formula, the inner ring and the integrated composition of positioning element for constituting bearing portion are essentially become.
In addition, being formed with the big flange shape pressing portion 231f of outer diameter in the lower end side of inner ring 231A.Pressing portion 231f
It is following position: when the bearing portion 231 and axis 41 that assembly illustrates later, is used in the pressing based on fixture.
In the same manner as the bearing portion 31 illustrated in first embodiment, rotor 203 has shown in Fig. 3 axis
Bearing portion 231 surrounds multiple ball 231C by the inner ring 231A and outer ring 231B for becoming rail ring, transmits via ball 231C
Added weight.In addition, in the example shown in the series of figures, axis 41 is inserted into the through hole 231c for running through inner ring 231A, also, outer ring 231B
It is fixed on rear yoke 32.That is, the inner surface 231b of inner ring 231A is connected to axis 41, by the outer surface of inner ring 231A about bearing portion 231
The inner surface 231e of 231a and outer ring 231B surrounds ball 231C, also, the outer surface 231d of outer ring 231B connects with magnet 33.
About the vibration generating arrangement 200 of present embodiment, as shown in Figure 3, the inner ring 231A that bearing portion 231 has
Outer diameter be gradually reduced, even if as a result, such as the case where leading to one end of the rotor motion to axis direction as impact
Under, the inner ring 231A for constituting bearing portion 231 is also unfettered on the direction separated with ball 231C.Thereby, it is possible to avoid
Impact force is generated between inner ring 231A and outer ring 231B and ball 231C and impression etc. is generated in each component.In addition, making bearing
The height of inner ring 231A in portion 231 extends on the outside of axis direction, as a result, when causing rotor motion to axis side due to impact etc.
To one end when, can prevent ball 231C from inner ring 231A be detached from and prevent rotor to be detached from.
When manufacturing the vibration generating arrangement 200 of present embodiment, when assembling rotor 203 and axis 41, firstly, by inner ring
231A is fixed on axis 41.
In addition, outer ring 231B is fixed on rear yoke 32, in this case, become the fixing by ball 231C and illustration omitted
Device is assemblied in the state of outer ring 231B.At this point, being also installed on the state of rear yoke 32 as magnet 33 and weight 34.
Then, the group of outer ring 231B, ball 231C and holder and magnet 33 and weight 34 will be installed in rear yoke 32
Dress body, which is assemblied in, is fixed with the assembly of inner ring 231A in axis 41.At this point, arrangement to be supported in multiple balls of outer ring 231B
231C is assembled in a manner of being carried on inner ring 231A.
By the above, rotor 203 and axis 41 can be assembled.
[third embodiment]
Hereinafter, the vibration generating arrangement 300 to third embodiment of the present invention is described in detail.
In addition, in third vibration generating arrangement 300 described below, for the first, second above-mentioned embodiment party
The vibration generating arrangement 2,200 of formula is similarly constituted, and the same symbol is sometimes assigned in figure and description is omitted.
Fig. 4 is the sectional view for schematically showing the vibration generating arrangement 300 of third embodiment.
As shown in figure 4, the vibration generating arrangement 300 about present embodiment, the vibration with above-mentioned second embodiment
Similarly, about bearing portion 331, at least part of the outer surface 331a of inner ring 331A is with from axis direction Z for generating device 200
On another side (side first end 41a of axis 41) is towards one end (side the second end 41b of axis 41) and outer diameter gradually contracts
It is small.
On the other hand, the vibration generating arrangement of the vibration generating arrangement 300 of present embodiment and the first, second embodiment
2,200 is different on following point: in bearing portion 331, at least part of the inner surface 331e of outer ring 331B is with from axis
On the Z of direction one end is towards another side and internal diameter is gradually expanded.In the example shown in the series of figures, the inner surface 331e of outer ring 331B
In the region other than near one end formed in a manner of internal diameter is gradually expanded by with towards another side.
Moreover, present embodiment vibration generating arrangement 300 and the first, second embodiment vibration generating arrangement 2,
200 is different on following point: in first end (one end) 41a of axis 41, being fixed with disk-like member and (extend along diameter direction
Component) 45, the face opposed with rotor 303 in the disk-like member 45 is provided with limiting unit 305.That is, present embodiment
Vibration generating arrangement 300 and the vibration generating arrangement 2,200 of the first, second embodiment it is also different on following point: no
The shell for having the framework as covering outside.In addition, the base portion 42 that stator 4 has is set in example out shown in Fig. 4
It is placed in the surface of mounting plate 307.
In the same manner as the bearing portion 31,231 illustrated in the first, second embodiment, rotor 303 shown in Fig. 4
The bearing portion 331 being had surrounds multiple ball 331C by the inner ring 331A and outer ring 331B for becoming rail ring, via the ball
331C and transmit added weight.In addition, in the example shown in the series of figures, axis 41 is inserted into the through hole 331c for running through inner ring 331A, and
And outer ring 331B is fixed on rear yoke 32.That is, the inner surface 331b of inner ring 331A is connected to axis 41, by inner ring about bearing portion 331
The inner surface 331e of the outer surface 331a and outer ring 331B of 331A clamp ball 331C, also, the outer surface 331d of outer ring 331B
Connect with magnet 33.
According to the vibration generating arrangement 300 of present embodiment, the internal diameter 331e court for the outer ring 331B that bearing portion 331 has
It is gradually expanded to another side (side the second end 41b of axis 41), as a result, when assembling includes the rotor 303 of bearing portion 331,
Firstly, the ball 331C kept by the holder of illustration omitted is assemblied in the side inner ring 331A, then, ball 331C can be protected
Operability and productivity when being held in intermediate and assemble outer ring 331B simultaneously, thus manufacturing improve.
In addition, according to vibration generating arrangement 300, in the disk-shaped portion for the first end 41a (one end) for being fixed on axis 41
Part 45 is provided with limiting unit 305, even not having the composition of shell as a result, can also limit rotor as described above
The movement of 303 axis direction prevents rotor 303 from falling from axis 41.
In addition, according to present embodiment, due to can omit the vibration generating arrangement 2 such as the first, second embodiment,
Shell 7 as 200 (referring to Fig. 2), it is thus possible to which shape is reduced with the degree of not set shell.In addition, according to this embodiment party
Formula, by omit shell configuration, so as to inhibit the enlargement of vibration generating arrangement 300, and increase simultaneously magnet 33 or
Coil 43.Thereby, it is possible to realize the high torque (HT) as the brushless DC motor in vibration generating arrangement 300, can make to shake
It moves strength and easily occurs.Moreover, according to present embodiment, additionally it is possible to which the configuration by omitting shell reduces component costs
And seek cost effective.
In addition, the vibration generating arrangement 300 according to present embodiment, by omitting the configuration of shell, thus being suitable for
In the case where the electronic equipment as clock and watch 1 (referring to Fig.1) as described above etc., additionally it is possible to as needed and use make rotor
303 compositions exposed from the hole of hornbook 15 17.The case where rotating accordingly, for rotor 303, is able to use family and visually distinguishes
Recognize at least part of rotor 303.That is, since vibration can also be utilized to transmit information to user, also, passed using vision
Pass information, it is thus possible to improve the function that information is transmitted to user significantly.Moreover, as can be from being formed in clock and watch 1
In the case where the composition of a part of the internal mechanism of the 17 visuognosis vibration generating arrangement 300 of hole of hornbook 15, additionally it is possible to
Improve the aesthetic appearance of the clock and watch as electronic equipment.
In the present embodiment, about bearing portion 331, at least part of the inner surface 331e of 331B in outer ring, preferably
On axis direction Z towards inside and region that internal diameter temporarily becomes larger, example as illustrated in FIG. 4 is such, more preferably includes
Internal diameter straight region certain on axis direction Z.In the example shown in the series of figures, in the inner surface 331e of outer ring 331B in axis direction
Another side (side the second end 41b of axis 41) on Z becomes straight region.In this way, in the outer ring that bearing portion 331 has
The inner surface 331e of 331B, the region temporarily to become larger comprising internal diameter or straight region, as a result, operability when assemble rotor 303
With productivity it is significant improve.
When manufacturing the vibration generating arrangement 300 of present embodiment, when assembling rotor 303 and axis 41, firstly, by inner ring
331A is fixed on axis 41.
In addition, outer ring 331B is fixed on rear yoke 32, moreover, being also installed on the shape of rear yoke 32 as magnet 33 and weight 34
State.
Then, inner ring 331A will be carried on by the fixed ball 331C of the holder of illustration omitted.
Then, the assembly for being equipped with outer ring 331B, magnet 33 and weight 34 in rear yoke 32 is assemblied in and is filled in axis 41
Assembly equipped with inner ring 331A, ball 331C and holder.At this point, being supported in inner ring so that outer ring 331B is carried on arrangement
The mode of the column of multiple ball 231C of 331A is assembled.
By the above, rotor 303 and axis 41 can be assembled.
[function and effect]
As described above, according to the present invention involved in vibration generating arrangement 2,200,300, it is below using at least having
The composition of component: rotor 3 (203,303) has by with inner ring 31A (231A, 331A) and outer ring 31B (231B, 331B)
Ball bearing constitute bearing portion 31 (231,331)；With limiting unit 5 (305), the axis side of the rotor 3 (203,303) is limited
Movement to Z.Sliding as a result, due to compared with the case where using oil-containing metal bearing as prior art, when rotation
Become smooth, it is thus possible to consumption electric power is reduced, also, noise also reduces, in addition, life characteristic also improves.Moreover, because not
Influence caused by low-temperature characteristics in the presence of oil, thus stable movement is able to carry out at low ambient temperatures.Moreover, tool
The limiting unit 5 (305) of the movement of the axis direction Z of standby limitation rotor 3 (203,303) turns even if being applied to as a result, in such as impact
In the case where sub 3 (203,303), rotor 3 (203,303) can be also prevented to be detached from from axis 41, also, can also prevent from constituting
The inner ring 31A (231A, 331A) and outer ring 31B (231B, 331B) of the bearing portion 31 (231,331) being made of ball bearing or rolling
Impression is generated in pearl 31C (231C, 331C).
It is above-mentioned involved in the present invention due to having in addition, clock and watch 1 as electronic equipment involved according to the present invention
Vibration generating arrangement 2,200,300, thus it is few and noise is low to consume electric current, moreover, can be at low ambient temperatures
The stable movement of row, also, become the clock and watch of service life length.
[industrial availability]
About vibration generating arrangement of the invention, as described above, consumption electric current is few and noise is low, moreover, even if in low temperature environment
Under be also able to carry out stable movement, and be service life long device.Therefore, vibration generating arrangement of the invention is for example intelligent
Notification means in the electronic equipments such as mobile phone (portable phone), smartwatch, tablet computer are shown in the wear-type for VR
In device, portable game etc. to user give various tactiles with being very suitable on the way.
[symbol description]
1 clock and watch (electronic equipment)
15 hornbooks (visuognosis portion)
17 holes (opening portion)
2,200,300 vibration generating arrangement
3,203,303 rotor
31,231,331 bearing portion
Yoke after 32
33 magnet
34 weights
4 stators
41 axis
41a first end (one end)
41b the second end (another side)
42 base portions (support plate)
43 coils
44 driving portions
45 disk-like members (component extended along diameter direction)
5,305 limiting unit
6 positioning elements
7 shells
7A upper cover part
71 upper plate portions
72 base plates
307 mounting plates
C rotation axis
R diameter direction
Z axis direction.
Claims (15)
1. a kind of vibration generating arrangement, which is characterized in that have:
Rotor has weight and bearing portion, and the weight is rotatably arranged around rotation axis, at least has relative to institute
The center of gravity of rotation axis and bias is stated, the bearing portion is made of the ball bearing with inner ring and outer ring；
Axis, insertion run through the through hole for the inner ring for being formed in the bearing portion, are pivotably supported the rotor；With
And
Limiting unit is more configured at the inside in diameter direction compared with the weight, limits the movement of the axis direction of the rotor.
2. vibration generating arrangement according to claim 1, which is characterized in that about the bearing portion, outside the inner ring
At least part on surface with from the another side in the axis direction towards one end and outer diameter is gradually reduced.
3. vibration generating arrangement according to claim 1 or 2, which is characterized in that the bearing portion is in the inner ring
At least part on surface includes internal diameter straight region certain in the axis direction.
4. vibration generating arrangement according to any one of claims 1 to 3, which is characterized in that about the bearing portion,
At least part of the inner surface of the outer ring with from the one end in the axis direction towards the another side and
Internal diameter is gradually expanded.
5. vibration generating arrangement according to claim 4, which is characterized in that inner surface of the bearing portion in the outer ring
At least part include internal diameter straight region certain in the axis direction.
6. vibration generating arrangement according to any one of claims 1 to 5, which is characterized in that about the bearing portion,
At least one party of the inner ring or the outer ring is made of resin material.
7. the vibration generating arrangement according to any one of claims 1 to 6, which is characterized in that the axis is relative to institute
It states bearing portion and is integrally formed.
8. vibration generating arrangement according to claim 1, which is characterized in that be also equipped with from the other end in the axis direction
The positioning element of the collateral support bearing portion.
9. according to claim 1 to vibration generating arrangement described in any one of 8, which is characterized in that the limiting unit setting
In the upper plate portion for the shell for accommodating the rotor and the axis.
10. vibration generating arrangement according to claim 9, which is characterized in that
The rotor has the rear yoke for being equipped with the weight,
A part of the limiting unit and the rear yoke are opposed in the axis direction.
11. according to claim 1 to vibration generating arrangement described in any one of 8, which is characterized in that the limiting unit setting
In the rotor.
12. according to claim 1 to vibration generating arrangement described in any one of 8, which is characterized in that described in the axis
One end is fixed with the component extended along diameter direction, the face opposed with the rotor in the component along the extension of diameter direction,
It is provided with the limiting unit.
13. according to claim 1 to vibration generating arrangement described in any one of 12, which is characterized in that when with the axis
When the another side is benchmark, the weight is set to the extreme higher position in the rotor.
14. a kind of electronic equipment, which is characterized in that have and occur according to claim 1 to vibration described in any one of 13
Device.
15. electronic equipment according to claim 14, which is characterized in that
Have:
It can be from the visuognosis portion that external view is recognized；And
It is set to the opening portion in the visuognosis portion,
The rotor configuration is in the opening portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018051622A JP7109948B2 (en) | 2018-03-19 | 2018-03-19 | Vibration generator and electronic equipment |
| JP2018-051622 | 2018-03-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110289727A true CN110289727A (en) | 2019-09-27 |
| CN110289727B CN110289727B (en) | 2023-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910121992.6A Active CN110289727B (en) | 2018-03-19 | 2019-02-19 | Vibration generating device and electronic apparatus |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7109948B2 (en) |
| CN (1) | CN110289727B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04137463U (en) * | 1991-06-11 | 1992-12-22 | 東京パーツ工業株式会社 | Fixed yoke type flat brushless vibration motor |
| JPH06265648A (en) * | 1993-03-12 | 1994-09-22 | Citizen Watch Co Ltd | Electronic apparatus with oscillatory alarm |
| JP2006200733A (en) * | 2004-08-11 | 2006-08-03 | Nsk Ltd | Rolling bearing |
| JP2009219349A (en) * | 2008-03-11 | 2009-09-24 | Lg Innotek Co Ltd | Vibration motor |
| JP2012017736A (en) * | 2010-06-11 | 2012-01-26 | Thk Co Ltd | Vertical axis fluid power generator |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0360358A (en) * | 1989-07-26 | 1991-03-15 | Tokyo Parts Kogyo Kk | Extra-flat coreless vibration motor |
| JP2005045868A (en) * | 2003-07-23 | 2005-02-17 | Sankyo Seiki Mfg Co Ltd | Vibrating motor |
| JP6338961B2 (en) * | 2014-07-30 | 2018-06-06 | 日本電産セイミツ株式会社 | Vibration motor |
-
2018
- 2018-03-19 JP JP2018051622A patent/JP7109948B2/en active Active
-
2019
- 2019-02-19 CN CN201910121992.6A patent/CN110289727B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04137463U (en) * | 1991-06-11 | 1992-12-22 | 東京パーツ工業株式会社 | Fixed yoke type flat brushless vibration motor |
| JPH06265648A (en) * | 1993-03-12 | 1994-09-22 | Citizen Watch Co Ltd | Electronic apparatus with oscillatory alarm |
| JP2006200733A (en) * | 2004-08-11 | 2006-08-03 | Nsk Ltd | Rolling bearing |
| JP2009219349A (en) * | 2008-03-11 | 2009-09-24 | Lg Innotek Co Ltd | Vibration motor |
| JP2012017736A (en) * | 2010-06-11 | 2012-01-26 | Thk Co Ltd | Vertical axis fluid power generator |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2019162587A (en) | 2019-09-26 |
| CN110289727B (en) | 2023-05-02 |
| JP7109948B2 (en) | 2022-08-01 |
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