CN102497131A - Actuator for linear type ultrasound motor - Google Patents
Actuator for linear type ultrasound motor Download PDFInfo
- Publication number
- CN102497131A CN102497131A CN2011104245019A CN201110424501A CN102497131A CN 102497131 A CN102497131 A CN 102497131A CN 2011104245019 A CN2011104245019 A CN 2011104245019A CN 201110424501 A CN201110424501 A CN 201110424501A CN 102497131 A CN102497131 A CN 102497131A
- Authority
- CN
- China
- Prior art keywords
- actuator
- support arms
- compacted
- electric machine
- orthoscopic
- 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.)
- Granted
Links
Images
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The invention discloses an actuator for a linear type ultrasound motor, which comprises piezoelectric ceramics, a stator, and a pre-compression component, wherein, the stator is provided with a supporting rod and two support arms arranged on two sides of the supporting rod; a certain angle is formed by the extending direction of the two support arms; the movement stiffness of the supporting rod on a plane surface formed by the two support arms is smaller than that of the supporting rod in the direction perpendicular to the plane surface formed by the two support arms; a through hole being penetrated by the supporting rod is formed on the pre-compression component provided with two pre-compression ends; the two support arms are positioned on the outer side of the pre-compression component; spaces are formed between the pre-compression ends and the support arms and are used for accommodating and exerting pre-compression on the piezoelectric ceramics; and one end of the supporting rod is the driving end, and the other end of the supporting rod is connected with the fixed end of the pre-compression component. According to the actuator provided by the invention, the piezoelectric ceramics and the stator can be combined without the aid of glue spreading and bond technology, so the technological process is simplified, and the performance of the actuator is ensured.
Description
Technical field
The invention belongs to the ultrasound electric machine field, relate in particular to a kind of actuator of orthoscopic ultrasound electric machine.
Background technology
Ultrasound electric machine is to utilize the back voltage effect of piezoelectric ceramic and the novel power device of ultrasonic vibration.Wherein, linear type ultrasound motor belongs to a kind of of linear electric motors.This motor has volume especially on the basis with general ultrasound electric machine characteristics little, and compact conformation is in light weight, and kinematic accuracy is high, need not movement conversion mechanism and drive circuit characteristic of simple.
The normal combination of adopting the mode that bonds to realize piezoelectric ceramic and stator in the prior art.Bonding quality between stator and the piezoelectric ceramic is directly connected to the output performance of motor.The thickness of tack coat will guarantee that energy can be delivered on the stator from piezoceramic material better, and is beneficial to distributing of piezoelectric ceramic heat, improves the output performance of motor; Tack coat is inner if accompany bubble, under dither, produces degumming phenomenon easily, makes motor scrap.
Summary of the invention
The present invention has designed and developed a kind of actuator of orthoscopic ultrasound electric machine for solving the problems of the technologies described above.In the present invention; Stator has a support bar and two support arms; The pre-compacted member then has the through hole that can be passed through by support bar, and piezoelectric ceramic is fixed between the pre-compacted end of support arm and pre-compacted member, and the combining of piezoelectric ceramic and stator no longer needs technologies such as gluing, bonding; Simplify technical process, guaranteed the performance of actuator.And actuator of the present invention has simple in structure and compact advantage.
Technical scheme provided by the invention is:
A kind of actuator of orthoscopic ultrasound electric machine comprises:
Piezoelectric ceramic;
Stator; It includes a support bar and two support arms; Said two support arms are distributed in the both sides of said support bar; And the bearing of trend of said two support arms is angled each other, and the rigidity that said support bar moves in the formed plane of said two support arms is less than the rigidity of the motion of the direction vertical with the formed plane of said two support arms, and said stator is the metallic elastic body;
The pre-compacted member; Said pre-compacted member has the through hole that supplies said support bar to pass; And have two pre-compacted ends, said two support arms are positioned at the outside of said pre-compacted member, and form space from precompression to said piezoelectric ceramic that hold said piezoelectric ceramic and to apply between said pre-compacted end and the said support arm; One end of said support bar is a drive end, and the other end is connected in the stiff end of said pre-compacted member.
Preferably, in the actuator of described orthoscopic ultrasound electric machine, said stator is a symmetrical structure, and the bearing of trend of said two support arms becomes 90 degree each other.
Preferably, in the actuator of described orthoscopic ultrasound electric machine, said pre-compacted member is a symmetrical structure, and said through hole is positioned at the line of symmetry position of said pre-compacted member.
Preferably; In the actuator of described orthoscopic ultrasound electric machine; The part of the stiff end one side through hole that extends said pre-compacted member of said support bar and that be positioned at said pre-compacted member has external screw thread, and said support bar is fixedly connected with said pre-compacted member through the nut that is tightened on the said external screw thread.
Preferably, in the actuator of described orthoscopic ultrasound electric machine, said drive end has a planar end.
Preferably, in the actuator of described orthoscopic ultrasound electric machine, be provided with spring shim between the stiff end of said nut and said pre-compacted member.
Preferably, in the actuator of described orthoscopic ultrasound electric machine, said piezoelectric ceramic is stacked piezoelectric ceramic.
The stator of the actuator of orthoscopic ultrasound electric machine of the present invention has a support bar and two support arms; The pre-compacted member then has the through hole that can be passed through by support bar; Piezoelectric ceramic is fixed between the pre-compacted end of support arm and pre-compacted member; The combining of piezoelectric ceramic and stator no longer needs technologies such as gluing, bonding, simplified technical process, guaranteed the performance of actuator.The present invention also has following beneficial effect:
(1) end face of the drive end of actuator of the present invention is a plane; This design is different from the some contact form between drive end of the prior art and the mover; Increase the contact area between drive end and the mover, reduced contact stress, can improve the useful life of ultrasound electric machine;
(2) the pre-compacted member of actuator of the present invention and stator all adopt symmetrical structure, guarantee two piezoelectric ceramic are applied balanced consistent pressure, improve the stress distribution situation of piezoelectric ceramic;
(3) actuator of the present invention has simple in structure and compact advantage.
Description of drawings
Fig. 1 is the structural representation of the actuator of orthoscopic ultrasound electric machine of the present invention.
Fig. 2 is the structural representation of the orthoscopic ultrasound electric machine of application actuator of the present invention.
Fig. 3 is the mode circulation sketch map of stator work of the actuator of orthoscopic ultrasound electric machine of the present invention.
Fig. 4 is the cross section at adjustment position of support bar of the actuator of orthoscopic ultrasound electric machine of the present invention.
Fig. 5 is the size sketch map of stator of the actuator of orthoscopic ultrasound electric machine of the present invention, and wherein, Fig. 5 (a) is the front view of stator, and Fig. 5 (b) is the right view of stator, and Fig. 5 (c) is the vertical view of stator.
Embodiment
Below in conjunction with accompanying drawing the present invention is done further detailed description, can implement according to this with reference to the specification literal to make those skilled in the art.
As depicted in figs. 1 and 2, the present invention provides a kind of actuator of orthoscopic ultrasound electric machine, comprising: piezoelectric ceramic 1; Stator 2; It includes a support bar 22 and two support arms 21; Said two support arms 21 are distributed in the both sides of said support bar 22; And the bearing of trend of said two support arms 21 is angled each other, and the rigidity that said support bar 22 moves in said two support arms 21 formed planes is less than the rigidity of the motion of the direction vertical with said two support arms 21 formed planes, and said stator 2 is the metallic elastic body; Pre-compacted member 3; Said pre-compacted member 3 has the through hole that supplies said support bar 22 to pass; And have two pre-compacted ends 31, said two support arms 21 are positioned at the outside of said pre-compacted member 3, and form space from precompression to said piezoelectric ceramic 1 that hold said piezoelectric ceramic 1 and to apply between said pre-compacted end 31 and the said support arm; One end of said support bar is a drive end 23, and the other end is connected in the stiff end 32 of said pre-compacted member 3.
The piezoelectric ceramic 1 of two same sizes is pressed in the pre-compacted end 31 of pre-compacted member 3, and the support bar of stator 2 extends on the part of stiff end 32 of pre-compacted member 3 and is arranged with spring shim 5, through torque wrench nut 4 is tightened.The both sides of pre-compacted member 3 have installing hole 33.Fig. 2 is a linear ultrasonic motor structural representation of using actuator of the present invention.After fixing line slideway 6, actuator is pressed on the drive surface of line slideway 6, the installing hole 33 that utilizes actuator pre-compacted member 3 both sides simultaneously fixedly actuator gets final product.
Mover in the orthoscopic ultrasound electric machine is a line slideway 6.
The size of the stator of actuator is confirmed through finite element optimum design among the present invention, can guarantee the frequency invariance of its single order longitudinal vibration mode and second order bending vibration modes.The size of stator is as shown in Figure 5 among the present invention; The width of the drive end 23 of stator is 4mm, and the width of support arm 21 is 3mm, and the end of support arm is 5mm to the distance between the drive end; Adjustment position 24 nestles up two support arms; Being positioned at the below of two support arms, is 17mm from support bar adjustment position 24 to the distance the support bar bottom end face, and the support bar of stator and two support arms are cylinder.In addition, the material of stator of the present invention is a phosphor bronze.
As shown in Figure 3; When feeding the two-way phase difference respectively when being the sine voltage signal of 90 degree for above-mentioned two piezoelectric ceramic; Utilize the inverse piezoelectric effect of piezoelectric ceramic piece just can inspire the longitudinal vibration mode and the bending vibration modes of stator simultaneously, these two mode of oscillations synthesize into an elliptic motion at the drive end of actuator.This elliptic motion can be used for promoting line slideway and move.If when exchanging this two phases sinusoidal signal, the elliptic motion that drive end produced will be reverse, the direction of motion of line slideway also can be opposite.In orthoscopic ultrasound electric machine shown in Figure 2, utilize this elliptic motion to drive line slideway just and carry out forward and reverse motion.
For the drive end that guarantees stator can form above-mentioned elliptic motion, also to make rigidity that support bar moves rigidity in the formed plane of two support arms less than the motion of the direction vertical with the formed plane of two support arms.As shown in Figure 3, support bar be positioned at two support arms below the position have an adjustment position 24, the cross section of this part is as shown in Figure 4.Suppose that above-mentioned elliptic motion is to be positioned on the paper, then the rigidity to left and right directions should be less than it perpendicular to the rigidity on the paper direction in paper for support bar.
The d33 directive effect of applying piezoelectric ceramic, exciting efficiency is higher.
In the actuator of described orthoscopic ultrasound electric machine, said stator is a symmetrical structure, and the bearing of trend of said two support arms 21 becomes 90 degree each other.
In the actuator of described orthoscopic ultrasound electric machine, said pre-compacted member 3 is a symmetrical structure, and said through hole is positioned at the line of symmetry position of said pre-compacted member 3.
In the actuator of described orthoscopic ultrasound electric machine; The part of the stiff end one side through hole that extends said pre-compacted member of said support bar and that be positioned at said pre-compacted member has external screw thread, and said support bar 22 is fixedly connected with said pre-compacted member 3 through the nut 4 that is tightened on the said external screw thread.
In the actuator of described orthoscopic ultrasound electric machine, said drive end 23 has a planar end.
The end face of the drive end 23 of actuator of the present invention is a plane; This design is different from the some contact form between drive end of the prior art and the mover; Increase the contact area between drive end and the line slideway, reduced contact stress, can improve the useful life of ultrasound electric machine.
In the actuator of described orthoscopic ultrasound electric machine, be provided with spring shim 5 between the stiff end of said nut 4 and said pre-compacted member 3.
Above-mentioned spring shim 5 is used to prevent that fastening nut from getting loose.
In the actuator of described orthoscopic ultrasound electric machine, said piezoelectric ceramic is stacked piezoelectric ceramic.
Although embodiment of the present invention are open as above; But it is not restricted to listed utilization in specification and the execution mode; It can be applied to various suitable the field of the invention fully, for being familiar with those skilled in the art, can easily realize other modification; Therefore under the universal that does not deviate from claim and equivalency range and limited, the legend that the present invention is not limited to specific details and illustrates here and describe.
Claims (7)
1. the actuator of an orthoscopic ultrasound electric machine is characterized in that, comprising:
Piezoelectric ceramic;
Stator; It includes a support bar and two support arms; Said two support arms are distributed in the both sides of said support bar; And the bearing of trend of said two support arms is angled each other, and the rigidity that said support bar moves in the formed plane of said two support arms is less than the rigidity of the motion of the direction vertical with the formed plane of said two support arms, and said stator is the metallic elastic body;
The pre-compacted member; Said pre-compacted member has the through hole that supplies said support bar to pass; And have two pre-compacted ends, said two support arms are positioned at the outside of said pre-compacted member, and form space from precompression to said piezoelectric ceramic that hold said piezoelectric ceramic and to apply between said pre-compacted end and the said support arm; One end of said support bar is a drive end, and the other end is connected in the stiff end of said pre-compacted member.
2. the actuator of orthoscopic ultrasound electric machine as claimed in claim 1 is characterized in that, said stator is a symmetrical structure, and the bearing of trend of said two support arms becomes 90 degree each other.
3. according to claim 1 or claim 2 the actuator of orthoscopic ultrasound electric machine is characterized in that said pre-compacted member is a symmetrical structure, and said through hole is positioned at the line of symmetry position of said pre-compacted member.
4. the actuator of orthoscopic ultrasound electric machine as claimed in claim 3; It is characterized in that; The part of the stiff end one side through hole that extends said pre-compacted member of said support bar and that be positioned at said pre-compacted member has external screw thread, and said support bar is fixedly connected with said pre-compacted member through the nut that is tightened on the said external screw thread.
5. the actuator of orthoscopic ultrasound electric machine as claimed in claim 1 is characterized in that, said drive end has a planar end.
6. the actuator of orthoscopic ultrasound electric machine as claimed in claim 1 is characterized in that, is provided with spring shim between the stiff end of said nut and said pre-compacted member.
7. the actuator of orthoscopic ultrasound electric machine as claimed in claim 1 is characterized in that, said piezoelectric ceramic is stacked piezoelectric ceramic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110424501.9A CN102497131B (en) | 2011-12-16 | 2011-12-16 | Actuator for linear type ultrasound motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110424501.9A CN102497131B (en) | 2011-12-16 | 2011-12-16 | Actuator for linear type ultrasound motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102497131A true CN102497131A (en) | 2012-06-13 |
| CN102497131B CN102497131B (en) | 2015-07-15 |
Family
ID=46188929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110424501.9A Expired - Fee Related CN102497131B (en) | 2011-12-16 | 2011-12-16 | Actuator for linear type ultrasound motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102497131B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013142978A1 (en) * | 2012-03-28 | 2013-10-03 | University Of Western Ontario | Actuator for moving an ultrasound probe |
| CN105509812A (en) * | 2016-01-08 | 2016-04-20 | 苏州市职业大学 | Ultrasonic motor performance testing device |
| CN105515439A (en) * | 2016-01-08 | 2016-04-20 | 苏州市职业大学 | Laminated piezoelectric ceramic linear ultrasonic motor |
| CN111085950A (en) * | 2019-12-11 | 2020-05-01 | 江苏大学 | Pre-pressure applying device of floating self-balancing ultrasonic motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006014768A1 (en) * | 2006-03-30 | 2007-10-04 | Robert Bosch Gmbh | Piezo electric actuator for high pressure fuel injection system, has torus-shaped and cylindrical coupling units arranged coaxial to each other, where torus-shaped coupling unit cooperates with ring actuator and has large diameter |
| CN101071995A (en) * | 2007-06-14 | 2007-11-14 | 南京航空航天大学 | Dual-driving foot longitudinal-vibration mode stacked linear ultrasonic motor and working mode and electric exciting manner |
| CN200987127Y (en) * | 2006-10-30 | 2007-12-05 | 苏州市职业大学 | K-shaped straight line ultrasonic motor |
| CN101119079A (en) * | 2007-09-13 | 2008-02-06 | 上海大学 | Triangle bended plate type piezoelectric straight line ultrasound electric motor |
-
2011
- 2011-12-16 CN CN201110424501.9A patent/CN102497131B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006014768A1 (en) * | 2006-03-30 | 2007-10-04 | Robert Bosch Gmbh | Piezo electric actuator for high pressure fuel injection system, has torus-shaped and cylindrical coupling units arranged coaxial to each other, where torus-shaped coupling unit cooperates with ring actuator and has large diameter |
| CN200987127Y (en) * | 2006-10-30 | 2007-12-05 | 苏州市职业大学 | K-shaped straight line ultrasonic motor |
| CN101071995A (en) * | 2007-06-14 | 2007-11-14 | 南京航空航天大学 | Dual-driving foot longitudinal-vibration mode stacked linear ultrasonic motor and working mode and electric exciting manner |
| CN101119079A (en) * | 2007-09-13 | 2008-02-06 | 上海大学 | Triangle bended plate type piezoelectric straight line ultrasound electric motor |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013142978A1 (en) * | 2012-03-28 | 2013-10-03 | University Of Western Ontario | Actuator for moving an ultrasound probe |
| US10052083B2 (en) | 2012-03-28 | 2018-08-21 | University Of Western Ontario | Actuator for moving an ultrasound probe |
| CN105509812A (en) * | 2016-01-08 | 2016-04-20 | 苏州市职业大学 | Ultrasonic motor performance testing device |
| CN105515439A (en) * | 2016-01-08 | 2016-04-20 | 苏州市职业大学 | Laminated piezoelectric ceramic linear ultrasonic motor |
| CN111085950A (en) * | 2019-12-11 | 2020-05-01 | 江苏大学 | Pre-pressure applying device of floating self-balancing ultrasonic motor |
| CN111085950B (en) * | 2019-12-11 | 2021-07-20 | 江苏大学 | Pre-pressure applying device of floating self-balancing ultrasonic motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102497131B (en) | 2015-07-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8434659B2 (en) | Bonding device, ultrasonic transducer, and bonding method | |
| CN103001532B (en) | Chip longitudinal-torsional mode compound ultrasonic motor | |
| CN103746597B (en) | SMD T-shaped dual-feet linear piezoelectric supersonic motor vibrator | |
| CN102497131B (en) | Actuator for linear type ultrasound motor | |
| CN101656490A (en) | Longitudinal bending compound modal linear ultrasonic motor | |
| CN102868315A (en) | Paster-type bending vibration composite dual-feet ultrasound motor oscillator | |
| CN102664552A (en) | Double drive-feet rectangular piezoelectric plate type linear ultrasonic motor | |
| US8299682B2 (en) | Ultrasonic motor | |
| CN102355160A (en) | Longitudinal and bending composite mode sandwich two-foot ultrasonic linear motor oscillator with elastic support | |
| CN103516251A (en) | Vertical-bending-twisting compound rotary type ultrasonic motor piezoelectric vibrator | |
| CN102882420A (en) | Surface-mounted piezoelectric ceramic and metal composite beam and method for exciting the composite beam to realize longitudinal and bending compounded vibration | |
| CN1262062C (en) | Supersonic motor standing wave driving vibrator capable of realizing linear or rotary movement | |
| CN103036472B (en) | Screw-type linear ultrasonic motor | |
| JP4830165B2 (en) | Ultrasonic motor vibrator | |
| CN101895231B (en) | Miniature two-degrees-of-freedom plane motion piezoelectric motor | |
| CN101860257B (en) | Miniature piezoelectric monocrystal linear motor | |
| CN211859981U (en) | Circular patch type double-foot linear ultrasonic motor and stator thereof | |
| CN102868316A (en) | Paster-type dual-feet ultrasound motor oscillator | |
| US9197141B2 (en) | Piezoelectric motor with efficient transfer of energy | |
| CN101267170B (en) | Dual-drive full arc curve ultrasonic motor | |
| CN103746600A (en) | Paster bent vibration composite piezoelectric supersonic motor vibrator | |
| CN102751900A (en) | Two-degree-of-freedom ultrasonic motor | |
| US20070176515A1 (en) | Stator and Carriage for a Piezoelectric Liner Motor | |
| CN203596763U (en) | Longitudinal-bending-torsional composite rotary supersonic wave motor piezoelectric oscillator | |
| CN101689817B (en) | Ultrasonic motor |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150715 Termination date: 20161216 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |