CN204205815U - Mangneto high-frequency low noise vibrating device - Google Patents
Mangneto high-frequency low noise vibrating device Download PDFInfo
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- CN204205815U CN204205815U CN201420745386.4U CN201420745386U CN204205815U CN 204205815 U CN204205815 U CN 204205815U CN 201420745386 U CN201420745386 U CN 201420745386U CN 204205815 U CN204205815 U CN 204205815U
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- magnet
- base
- projection screen
- magnetic pole
- low noise
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Abstract
This application discloses a kind of mangneto high-frequency low noise vibrating device, it is for making the projection screen porpoise of laser projection, and it comprises: front base, and it is installed in side, projection screen rear, and contacts with projection screen body or framework; Front magnet, it is installed on front base, and the first magnetic pole of front magnet is towards projection screen rear; Rear magnet, it is installed on rear base, and described rear magnet is made up of multiple magnet; Motor, it is connected to described rear base, is used for rotating described rear base, and wherein, in the rear during base rotation, the first magnetic pole of part magnet and the second magnetic pole of all the other magnets are alternately just to the first magnetic pole of magnet front described in this; Spring, it is connected between the fixture at front base and projection screen rear.The dither that the application utilizes the two like magnetic poles repel each other principle that there is a natural attraction between the sexes of magnetic to be curtain by the high speed circumference conversion of motion of motor, and utilize spring to avoid low noise vibrating that hard contact achieves device.
Description
Technical field
The utility model relates to technical field of laser display, relates to a kind of vibrative device, particularly relates to a kind of high-frequency low noise vibrating device.
Background technology
Laser display field, because the characteristic of laser itself determined, therefore shows in image the existence having laser speckle, the appreciation effect of impact greatly.Therefore developed elimination Speckles Technique, a kind of speckle technology for eliminating is wherein vibration screen.Existing mode of vibration has a variety of, as utilized electromagnet to produce vibration, utilizing eccentric wheel to rotate and producing vibration.But above device all exists respective defect, the vibrative mode of electromagnet limit due to the characteristic of electromagnet itself, and vibration frequency is restricted and is only below 10HZ.Eccentric wheel rotates and produces vibration, because the long-term eccentric motion of drive motors makes the life-span of motor shorten dramatically, and device body vibration, produce noise larger.
Require that in display field the frequency of vibration of screen is not less than 30HZ, and noise is not more than 40 decibels, thus makes spectators have a good viewing effect and audio, current technology only can meet a requirement wherein.
Utility model content
In order to overcome above-mentioned the deficiencies in the prior art, obtain a kind of vibrating device of high-frequency low noise, the utility model provides a kind of mangneto high-frequency low noise vibrating device, and this device is simple and easy to realize.
According to embodiment of the present utility model, propose a kind of mangneto high-frequency low noise vibrating device, it is for making the projection screen porpoise of laser projection, it is characterized in that, described mangneto high-frequency low noise vibrating device comprises: front base, it is installed in side, projection screen rear, and contacts with projection screen body or framework; Front magnet, it is installed on front base, and the first magnetic pole of described front magnet is towards projection screen rear; Rear base, itself and front base is coaxial is mounted opposite; Rear magnet, it is installed on rear base, and described rear magnet is made up of multiple magnet; Motor, it is installed on the fixture at projection screen rear, its motor shaft is vertical with described projection screen, and be connected to described rear base, be used for rotating described rear base, wherein, in the rear during base rotation, the first magnetic pole of the part magnet in described multiple magnet and the second magnetic pole of all the other magnets are alternately just to the first magnetic pole of magnet front described in this; Spring, it is connected between the fixture at front base and described projection screen rear.
According to embodiment of the present utility model, multiple cylindrical magnets that described front magnet is n by the quantity of circumferentially arranging form, described rear magnet is made up of 2n the cylindrical magnet circumferentially arranged, wherein, in the rear during base rotation, first magnetic pole of n cylindrical magnet in described rear magnet and the second magnetic pole of another n cylindrical magnet are alternately just to the first magnetic pole of n cylindrical magnet of described front magnet, and wherein n is positive integer.
According to embodiment of the present utility model, in the process by rear base described in described electric machine rotation, there is not physical contact in described front magnet and described rear magnet, its minimum spacing is less than 2 millimeters.
According to embodiment of the present utility model, the housing along described projection screen is provided with multiple described mangneto high-frequency low noise vibrating device.
The beneficial effects of the utility model are mainly: utilize the dither that the high speed circumference conversion of motion of motor is device by the two like magnetic poles repel each other principle that there is a natural attraction between the sexes of magnetic, and utilize spring to avoid low noise vibrating that hard contact achieves device.
Accompanying drawing explanation
Fig. 1 is the structural representation of the mangneto high-frequency low noise vibrating device according to embodiment of the present utility model.
Fig. 2 is the layout schematic diagram of the permanent magnet of mangneto high-frequency low noise vibrating device according to embodiment of the present utility model.
Embodiment
Be further described in detail the technical solution of the utility model below in conjunction with the drawings and specific embodiments, thus, advantage and disadvantage of the present utility model will be more clear along with description.
Although those skilled in the art will appreciate that the following description relates to a lot of ins and outs about embodiment of the present utility model, this is only the example for principle of the present utility model is described and does not mean that any restriction.The utility model can be applicable to be different from the occasion outside the following ins and outs exemplified, as long as they do not deviate from principle of the present utility model and spirit.
In addition, miscellaneous in order to avoid making the description of this specification be limited to, in description in this manual, the process such as omission, simplification, accommodation may have been carried out to the portion of techniques details that can obtain in prior art data, this is understandable for a person skilled in the art, and this can not affect the open adequacy of this specification.
It should be noted that, description below employs upper and lower, forward and backward such position and limits word.But those skilled in the art is appreciated that such position limits word and is only used for illustrating principle of the present utility model completely, does not represent actual position relationship.It according to the concrete layout needs of projector/curtain, flexible Application can have the layout of other various position relationships completely, as long as can realize the sustained vibration of curtain thus eliminate speckle.
As illustrated in fig. 1 and 2, mainly comprise according to the mangneto high-frequency low noise vibrating device of embodiment of the present utility model: spring housing, upper permanent magnet (front magnet), upper permanent magnet base (front magnet base), the next permanent magnet (rear magnet), the next permanent magnet base (rear magnet base) and the next motor (rear motor), upper bed-plate (front base), lower bottom base (rear base).Wherein, upper permanent magnet base can be installed in the curtain back side, and the next permanent magnet base can be installed on the fixed position (such as, metope) after the curtain back side.In addition, according to the size of curtain, the multiple described mangneto high-frequency low noise vibrating device of different number can be installed, such as, housing along curtain installs multiple described mangneto high-frequency low noise vibrating device, thus realizes continuous, the distributed unordered vibration of curtain.Wherein, front magnet base and front base and motor and rear base also can be fixing integral structures.
Exemplarily, concrete assembly relation can be: upper permanent magnet be multiple cylinder-shaped magnet (such as, upper permanent magnet comprises three cylinder-shaped magnets be circumferentially evenly arranged), upper permanent magnet base leaves the installing hole of corresponding permanent magnet, permanent magnet utilizes this installing hole to be fixed in upper base seat permanent magnet, and upper permanent magnet base is fixed on upper bed-plate; The next permanent magnet be multiple cylinder-shaped magnet (such as, the next permanent magnet comprises six cylinder-shaped magnets be circumferentially evenly arranged), the next permanent magnet base leaves the installing hole of corresponding permanent magnet, the next permanent magnet utilizes this installing hole to be fixed in the next permanent magnet base, the next permanent magnet floor installation is on motor shaft, and motor is fixed on lower bottom base; Upper bed-plate is connected through a hard spring with lower bottom base.In order to produce continuous shaking when the next permanent magnet base of driven by motor rotates, all down, upward, the S pole of other three magnet upward in the N pole of three magnet in the next permanent magnet in the N pole (or S pole) of whole three magnet of upper permanent magnet.
Exemplarily, the technical parameter of all parts is as follows.
Electric machine frequency: 1000-3000 turns/min.
Vibration frequency: 3* electric machine frequency.
Motor size: diameter 10-50mm, the screen for different size is equipped with the motor of different capacity, thus ensures enough actuating forces.
Permanent magnet is preferred: neodymium iron boron strong magnet.
Spring choice criteria: when strong magnet is in attracting state, hard contact (thus can reduce noise and component wear) does not occur, and spacing is less than 2mm.
It should be noted last that, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from the spirit and scope of technical solutions of the utility model, it all should be encompassed among right of the present utility model.
Claims (4)
1. a mangneto high-frequency low noise vibrating device, it, for making the projection screen porpoise of laser projection, is characterized in that, described mangneto high-frequency low noise vibrating device comprises:
Front base, it is installed in side, projection screen rear, and contacts with projection screen body or framework;
Front magnet, it is installed on front base, and the first magnetic pole of described front magnet is towards projection screen rear;
Rear base, itself and front base is coaxial is mounted opposite;
Rear magnet, it is installed on rear base, and described rear magnet is made up of multiple magnet;
Motor, it is installed on the fixture at projection screen rear, its motor shaft is vertical with described projection screen, and be connected to described rear base, be used for rotating described rear base, wherein, in the rear during base rotation, the first magnetic pole of the part magnet in described multiple magnet and the second magnetic pole of all the other magnets are alternately just to the first magnetic pole of magnet front described in this;
Spring, it is connected between the fixture at front base and described projection screen rear.
2. mangneto high-frequency low noise vibrating device according to claim 1, is characterized in that, multiple cylindrical magnets that described front magnet is n by the quantity of circumferentially arranging form, described rear magnet is made up of 2n the cylindrical magnet circumferentially arranged, wherein, n is positive integer
Wherein, in the rear during base rotation, the second magnetic pole of another n cylindrical magnet in the first magnetic pole of n cylindrical magnet in described rear magnet and described rear magnet is alternately just to the first magnetic pole of n cylindrical magnet of described front magnet.
3. mangneto high-frequency low noise vibrating device according to claim 1, is characterized in that, in the process by rear base described in described electric machine rotation, described front magnet and described rear magnet physical contact do not occur, and its minimum spacing is less than 2 millimeters.
4. the mangneto high-frequency low noise vibrating device according to claim 1 or 2 or 3, is characterized in that, the housing along described projection screen is provided with multiple described mangneto high-frequency low noise vibrating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420745386.4U CN204205815U (en) | 2014-12-02 | 2014-12-02 | Mangneto high-frequency low noise vibrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420745386.4U CN204205815U (en) | 2014-12-02 | 2014-12-02 | Mangneto high-frequency low noise vibrating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204205815U true CN204205815U (en) | 2015-03-11 |
Family
ID=52663728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420745386.4U Expired - Fee Related CN204205815U (en) | 2014-12-02 | 2014-12-02 | Mangneto high-frequency low noise vibrating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204205815U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105728324A (en) * | 2016-04-26 | 2016-07-06 | 湖南城市学院 | Combined separating screen with bucket elevator |
| CN106955061A (en) * | 2017-05-16 | 2017-07-18 | 苏州海歌电器科技有限公司 | Dust catcher shock-damping structure |
| CN108045131A (en) * | 2017-11-23 | 2018-05-18 | 温州大学 | A kind of macromolecule nib manufacture high precision fiber draft gear |
-
2014
- 2014-12-02 CN CN201420745386.4U patent/CN204205815U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105728324A (en) * | 2016-04-26 | 2016-07-06 | 湖南城市学院 | Combined separating screen with bucket elevator |
| CN105728324B (en) * | 2016-04-26 | 2017-09-29 | 湖南城市学院 | A kind of compounding separation sieve with bucket elevator |
| CN106955061A (en) * | 2017-05-16 | 2017-07-18 | 苏州海歌电器科技有限公司 | Dust catcher shock-damping structure |
| CN106955061B (en) * | 2017-05-16 | 2019-04-09 | 苏州海歌电器科技有限公司 | Dust catcher shock-damping structure |
| CN108045131A (en) * | 2017-11-23 | 2018-05-18 | 温州大学 | A kind of macromolecule nib manufacture high precision fiber draft gear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 Termination date: 20181202 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |