CN108880322A - A kind of rotary traveling wave ultrasonic motor using completely new precompression applying mode - Google Patents
A kind of rotary traveling wave ultrasonic motor using completely new precompression applying mode Download PDFInfo
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- CN108880322A CN108880322A CN201810993238.7A CN201810993238A CN108880322A CN 108880322 A CN108880322 A CN 108880322A CN 201810993238 A CN201810993238 A CN 201810993238A CN 108880322 A CN108880322 A CN 108880322A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/10—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/10—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors
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Abstract
The present invention relates to a kind of rotary traveling wave ultrasonic motors using completely new precompression applying mode, including rigid rotator component, the side of rigid rotator component is mounted on motor base by bearing, and stator module, stator support frame and precompression shell are sequentially installed in the other side；Rigid rotator component above-mentioned includes sequentially connected rigid rotator and friction plate；Stator module above-mentioned includes sequentially connected stator, piezoelectric ceramic piece and flexible printed circuit；Also wave spring is laid in installation between precompression shell and stator support frame；The present invention has many advantages, such as that big hollow accounting, anti high overload, low-speed stability is good, low-temperature startup is good, and motor is good in their entire life output performance consistency；Hollow ultrasound electric machine is extended in the application of big hollow accounting occasion, such as driving eyeglass and wave plate in big hollow accounting optical lens.
Description
Technical field
The present invention relates to a kind of rotary traveling wave ultrasonic motors using completely new precompression applying mode, belong to ultrasound electric machine skill
Art field.
Background technique
Various hollow rotating travelling wave supersonic motors in the prior art, lacking one kind has big hollow accounting while also having
The hollow rotating travelling wave supersonic motor of big torque ratio.
The rotary traveling wave ultrasonic motor of the hollow accounting of super large of the annular stator without web structure in the prior art, stator pack
Part and structure are as shown in Figure 1.For hollow ultrasound electric machine of this annular stator without web structure during installing and using, it is at least
Metal or plastic shell, the wave spring of application precompression or the rolling of disc spring, rotor, rotor circumferentially rotated including restricted stator
Wheel or ball etc., the stator of this hollow ultrasound electric machine is usually suspended form, and stator is pressed on rotor, rotor be pressed in idler wheel or
On ball, wave spring is pressed in the one side that stator posts piezoelectric ceramic piece, and stator is deeply fixed by the protrusion on shell in circumferential direction
Its freedom degree is limited in sub- tooth socket, but still has certain displacement capacity in the axial direction.The rotation of this hollow accounting of super large
Turn travelling wave supersonic motor to obtain in Canon, Nikon, suitable horse, guest, be successfully applied in the camera lenses such as Sony and Olympus,
Quick, stable, noiseless is run under small torque.Its shortcoming：Stator positioning mechanism is complicated；The production of idler wheel or ball and
Installation specification is higher；Motor can not provide high-torque, and torque is relatively low.
Hollow rotating travelling wave supersonic motor of the stator in the prior art with web structure, such as《Hollow ultrasound electric machine》
（CN202696502U）,《A kind of highly reliable high stability hollow rotating type travelling wave supersonic motor》（CN103219917A）,《It is a kind of
High-precision thin wall hollow type travelling wave supersonic motor》（CN107769609A）,《A kind of hollow rotary type travelling wave ultrasonic electricity of screw-type
Machine》（CN102751906A）《A kind of hollow ultrasound electric machine limiting rotor contact precompression》（CN203872083U）Etc..
The stator of these hollow ultrasound electric machines in the prior art generallys use band web structure, by abdomen by way of screw or screw thread
Plate is fixed on stator seat；Rotor generallys use flexible structure（Also there is the side that shaft is fixed by screws in using rigid structure
Formula, such as patent《A kind of high-precision thin wall hollow type travelling wave supersonic motor》The structure of middle use）；Bearing is squeezed by shell, then
Stator or rotor are squeezed using bearing, provides precompression using the deformation of flex rotor, stator web.Existing this stator band
The hollow rotating type ultrasound electric machine of web structure, although the rotation for the hollow accounting of super large of the annular stator without web structure that compares
Travelling wave supersonic motor has biggish output torque, but also has many shortcomings：First is that because its stator is using screw
Or the mode of screw thread is fixed, the diameter of motor inner via hole can not be designed to very greatly, the integral hollow accounting of motor be caused still to compare
It is smaller, it is not used to some applications needed compared with large through-hole；Second is that since precompression is mainly by flex rotor or stator
The deformation of web provides, therefore more demanding to the design of the structure of flex rotor or stator web, rigidity Design, design difficulty compared with
Greatly；Third is that influence of the abrasion of friction material to precompression is extremely sensitive since the deformation that rotor provides is usually smaller, friction
Motor precompression size changes obvious after material abrasion, therefore the output performance in electrical machinery life latter stage is because under the abrasion of friction material
It drops extremely obvious.
Solid shafting rotary traveling wave ultrasonic motor of the stator in the prior art with web structure, such as《Rotary type travelling wave ultrasonic
Motor》（CN201742324U）,Vibration wave motor（US4937488A）,《Nut adjustment precompression it is rotary-type
Travelling wave supersonic motor》（CN102223104A）,《A kind of open type high overload rotary traveling wave ultrasonic motor》（CN204408215U）Deng
Deng.The rotary ultrasonic motor of all solid shafts in the prior art, stator generally use the fixed form of screw and are mounted on stator
On seat or on pedestal；Rotor generally has larger web and flexible structure feature；Though they apply the structure or mode of precompression
There are many kinds of so, still, deformation offer precompression that is final or utilizing rotor, stator（It is provided using the deformation of flex rotor
Precompression, or precompression is provided using the deformation of stator web, and or mention using the deformation of flex rotor and stator together
For precompression）.Solid shafting rotary traveling wave ultrasonic motor of the existing this stator with web structure, although it is very universal, and
It has been successfully applied in automobile（Steering wheel force aid system）, medication injections（Nuclear Magnetic Resonance）, space flight（The goddess in the moon in China No. three）Deng
Aspect, but there is also shortcomings：First is that since rotor usually requires to be designed to flexible web structure, in stator high-frequency vibration
Under the influence of be easy fracture by fatigue, therefore usually also need on rotor web be arranged vibration isolation rubber reduce rotor web vibration
It is dynamic；Second is that precompression is mainly to be provided by the deformation of flex rotor or stator web, therefore to flex rotor or stator web
Structure design, rigidity Design are more demanding, and design difficulty is larger；Third is that since the deformation that rotor provides is usually smaller, friction
Influence of the abrasion of material to precompression is extremely sensitive, and motor precompression size changes obvious after friction material abrasion, therefore electricity
The output performance of machine end of lifetime is extremely obvious because of the abrasion decline of friction material.
Summary of the invention
The present invention provides a kind of rotary traveling wave ultrasonic motor using completely new precompression applying mode, has hollow greatly account for
Than, anti high overload, low-speed stability are good, low-temperature startup is good the advantages that, and motor is consistent in their entire life output performance
Property is good；Hollow ultrasound electric machine is extended in the application of big hollow accounting occasion, such as driving in big hollow accounting optical lens
Index glass piece and wave plate.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of rotary traveling wave ultrasonic motor using completely new precompression applying mode, including rigid rotator component, rigid rotator group
The side of part is mounted on motor base by bearing, and stator module, stator support frame and precompression are sequentially installed in the other side
Shell；
Rigid rotator component above-mentioned includes sequentially connected rigid rotator and friction plate；
Stator module above-mentioned includes sequentially connected stator, piezoelectric ceramic piece and flexible printed circuit；
Counterweight cylindrical body is laid along stator circumference on stator endosternum, stator support frame is fixed by gluing or interference fit
On counterweight cylindrical body of the stator endosternum with respect to piezoelectric ceramic piece side, opened up at least on the inner ring circumference of stator support frame
One groove, in the inner ring of precompression shell at least one boss provided circumferentially about, the number of groove and boss, to open up position equal
It matches, the boss on precompression shell inner periphery, which sticks into, realizes limitation stator support frame and stator module in stator support frame groove
In the rotation of circumferential direction；
Also wave spring is laid in installation between precompression shell and stator support frame；Line outlet is opened up in precompression shell side, benefit
Pcb board is fixed on precompression shell with screw, and the pcb board is docked with electrical interface.；
It further include dirt-proof boot as present invention further optimization, installation is laid between rigid rotator and stator, is passed through
Gluing or interference fit are fixed on the stepped hole that rigid rotator inner periphery opens up；
First annular concaveconvex structure is opened up on the end face of dirt-proof boot relative stator above-mentioned, along stator on stator former endosternum
The counterweight cylindrical body that circumference is laid, both ends are respectively higher than stator endosternum, and stretch out stator endosternum with respect to piezoelectric ceramic piece
The length of side is greater than the length for stretching out stator endosternum relative stiffness rotor side；
The second annular concave-convex structure is opened up along stator circumference in the end face of counterweight cylindrical body relative stiffness rotor, the second annular is recessed
Male structure and first annular concaveconvex structure clearance fit make stator and dirt-proof boot form labyrinth structure when integrating；
Counterweight cylindrical body stretch out stator endosternum with respect to the end face of piezoelectric ceramic piece side and stator support frame inner ring and outer ring it
Between formed circumferential groove matching, by stator support frame and stator module integration install；
As present invention further optimization, rigid rotator above-mentioned and axis are integrally formed, and motor is using single shaft form；Rigidity
The disk of rotor is rigid structure, and the anchor ring for pasting friction plate is opened up on its excircle, opens up and is used on inner periphery
The stepped hole of dirt-proof boot is fixedly mounted；
The end face of dirt-proof boot relative stiffness rotor is hierarchic structure, with the stepped hole being provided on rigid rotator inner periphery
Match, dirt-proof boot is fixed on rigid rotator by gluing or interference fit；
As present invention further optimization, three equally distributed grooves are opened up on the inner ring circumference of stator support frame,
Three equally distributed boss are set on the inner ring circumferential surface of precompression shell, groove is matched with the position that opens up of boss,
Boss on precompression shell inner periphery, which sticks into stator support frame groove, realizes limitation stator support frame and stator module in week
Rotation to direction；
As present invention further optimization, the counterweight cylindrical body laid on stator former endosternum along stator circumference, two
End is respectively higher than stator endosternum, and stretches out stator endosternum and be greater than abdomen in stretching stator with respect to the length of piezoelectric ceramic piece side
The length of plate relative stiffness rotor side；
Counterweight cylindrical body stretch out stator endosternum with respect to the end face of piezoelectric ceramic piece side and stator support frame inner ring and outer ring it
Between formed circumferential groove matching, by stator support frame and stator module integration install；
As present invention further optimization, rigid rotator above-mentioned and axis are integrally formed, and motor is using double shaft forms；One
Molding rigid rotator and stator, stator support frame and precompression housing slot cooperate；The disk of rigid rotator is rigidity knot
Structure opens up the anchor ring for pasting friction plate on excircle；
As present invention further optimization, three equally distributed grooves are opened up on the inner ring circumference of stator support frame,
Three equally distributed boss are set on the inner ring circumferential surface of precompression shell, groove is matched with the position that opens up of boss,
Boss on precompression shell inner periphery, which sticks into stator support frame groove, realizes limitation stator support frame and stator module in week
Rotation to direction；
As present invention further optimization, the circumference column of invagination is opened up on the side of precompression shell relative stator support frame
Face limits stator support frame and stator module jumps in radial direction with stator support frame outside circumference clearance fit；
The conduit for storing heat conductive silica gel or heat-conducting silicone grease is opened up on cylindrical surface along stator support frame outside circumference；
The axis of aforementioned rigid rotator component is hollow structure；
As present invention further optimization, the circumference column of invagination is opened up on the side of precompression shell relative stator support frame
Face limits stator support frame and stator module jumps in radial direction with stator support frame outside circumference clearance fit；
The conduit for storing heat conductive silica gel or heat-conducting silicone grease is opened up on cylindrical surface along stator support frame outside circumference；
Aforementioned rigid rotator component is separated with axis, and rigid rotator component is set on solid shafting；
Bearing is laid in precompression shell and axis contact position；
As present invention further optimization, three equally distributed grooves are opened up on the inner ring circumference of stator support frame,
The inner ring of precompression shell three equally distributed boss provided circumferentially about, boss and inner ring circumference vertical runs, groove with it is convex
The position that opens up of platform matches, and the boss on precompression shell inner periphery, which sticks into stator support frame groove, realizes limitation stator branch
The rotation of support and stator module in circumferential direction.
By above technical scheme, compared with the existing technology, the invention has the advantages that：
The present invention compares the rotary traveling wave ultrasonic motor of the hollow accounting of super large of the more existing annular stator without web structure, sacrificial
Bigger torque volume ratio is obtained under the premise of the less hollow accounting of domestic animal；
Hollow rotating travelling wave supersonic motor of the present invention than existing stator with web structure has bigger hollow accounting, hollow
Accounting increases as stator outer diameter increases, and maximum hollow accounting can be promoted to 50% ~ 75%, extends hollow ultrasound electric machine
In the application of big hollow, big torque occasion；
Rotor of the present invention is rigid structure, and stator is suspended between rigid rotator and the suitable wave spring of rigidity, wave spring buffer capacity
By force, more existing rotary traveling wave ultrasonic motor is compared, the present invention has better anti high overload ability；
Stator of the present invention is suspended between rigid rotator and wave spring, and motor has the advantages that stability is good under low speed high torque,
When especially wave spring rigidity and the stator stiffness of design, amplitude are met certain condition, stability is more preferable；
The deformation that the present invention relies primarily on wave spring provides precompression, and wave spring deformational displacement is big, and motor is in end of lifetime friction material
When i.e. will be completely worn out complete, precompression size variation still ensures that motor output performance still within the scope of best precompression
It is consistent with beginning of lifetime, solve the existing ultrasound electric machine by rotor deformation offer precompression in end of lifetime output performance
Drop by half even more than half the problem of.
Hollow rotating travelling wave supersonic motor of the invention provides precompression by wave spring, and motor has excellent at low temperature
Starting characteristic.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
It is annular stator component and structural schematic diagram without web structure in the prior art shown in Fig. 1；
It is a kind of the first implementation of rotary traveling wave ultrasonic motor using completely new precompression applying mode of the invention shown in Fig. 2
The structural schematic diagram of example；
It is a kind of the first implementation of rotary traveling wave ultrasonic motor using completely new precompression applying mode of the invention shown in Fig. 3
Example complete machine perspective view of the explosion；
It is a kind of the first implementation of rotary traveling wave ultrasonic motor using completely new precompression applying mode of the invention shown in Fig. 4
The stator module schematic diagram of example；
It is a kind of the first implementation of rotary traveling wave ultrasonic motor using completely new precompression applying mode of the invention shown in Fig. 5
The dust-proof cover structure schematic diagram of example；
It is a kind of the first implementation of rotary traveling wave ultrasonic motor using completely new precompression applying mode of the invention shown in Fig. 6
The labyrinth structure schematic diagram that dirt-proof boot and the stator cooperation of example are constituted；
It is a kind of stator support frame of rotary traveling wave ultrasonic motor using completely new precompression applying mode of the invention shown in Fig. 7
Structural schematic diagram；
It is a kind of precompression shell of rotary traveling wave ultrasonic motor using completely new precompression applying mode of the invention shown in Fig. 8
Structural schematic diagram；
It is a kind of second of implementation of rotary traveling wave ultrasonic motor using completely new precompression applying mode of the invention shown in Fig. 9
The structural schematic diagram of example；
It is a kind of second of reality of rotary traveling wave ultrasonic motor using completely new precompression applying mode of the invention shown in Figure 10
Apply the rigid rotator component structure diagram of example；
It is a kind of technology of rotary traveling wave ultrasonic motor using completely new precompression applying mode of the invention shown in Figure 11 in reality
The structural schematic diagram of Application Example in mandrel rotary traveling wave ultrasonic motor；It is that a kind of use of the invention is completely new shown in Figure 12
Application Example of the technology of the rotary traveling wave ultrasonic motor of precompression applying mode in solid shafting rotary traveling wave ultrasonic motor
Axis and rigid rotator component structure diagram, wherein 12a is axle construction, and 12b is rigid rotator component structure diagram；
It is a kind of technology of rotary traveling wave ultrasonic motor using completely new precompression applying mode of the invention shown in Figure 13 in reality
The stator seat structural schematic diagram of Application Example in mandrel rotary traveling wave ultrasonic motor.
It is a kind of precompressed of rotary traveling wave ultrasonic motor using completely new precompression applying mode of the invention shown in Figure 14
Another structural schematic diagram that power shell limitation stator support frame and stator module are rotated in circumferential direction.
Wherein：1 is the annular stator without web structure, and 2 be piezoelectric ceramic piece, and 3 be flexible printed circuit, and 4 be pedestal, and 5 are
Bearing, 6a are rigid rotator, and 6b is friction plate, and 7a is stator, and 7b is piezoelectric ceramic piece, and 7c is flexible printed circuit, and 8 be stator branch
Support, 9 be wave spring, and 10 be precompression shell, and 11 be dirt-proof boot, and 12 be pcb board, and 13 be electrical interface, and 14 be first annular bumps
Structure, 15 be the ground wire be connected with stator, and 16 be the second annular concave-convex structure, and 17 be groove, and 18 be to store heat conductive silica gel or lead
The conduit of hot silicone grease, 19 be boss, and 20 be line outlet, and 21 be solid shafting, and 22 is flat for stator support frame peripheral milling, and 23 be precompression
Shell milling is flat.
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates basic structure of the invention, therefore it only shows the composition relevant to the invention.
It is annular stator component and structural schematic diagram without web structure in the prior art shown in Fig. 1, including with lower component：
1 is the annular stator without web structure, and 2 be piezoelectric ceramic piece, and 3 be flexible printed circuit,
Shown in Fig. 2-Figure 14, the present invention includes following characteristics component：4 be pedestal, and 5 be bearing, and 6a is rigid rotator, and 6b is to rub
Pad, 7a are stator, and 7b is piezoelectric ceramic piece, and 7c is flexible printed circuit, and 8 be stator support frame, and 9 be wave spring, and 10 be precompression
Shell, 11 be dirt-proof boot, and 12 be pcb board, and 13 be electrical interface, and 14 be first annular concaveconvex structure, and 15 be the ground be connected with stator
Line, 16 be the second annular concave-convex structure, and 17 be groove, and 18 be the conduit of storage heat conductive silica gel or heat-conducting silicone grease, and 19 be boss, 20
It is solid shafting for line outlet, 21,22 is flat for stator support frame peripheral milling, and 23 is flat for precompression shell milling.
As shown in Fig. 2, a kind of rotary traveling wave ultrasonic motor using completely new precompression applying mode of the invention, including it is rigid
Property rotor assembly, the side of rigid rotator component are mounted on motor base by bearing, and stator pack is sequentially installed in the other side
Part, stator support frame and precompression shell；
Rigid rotator component above-mentioned includes sequentially connected rigid rotator and friction plate；
Stator module above-mentioned includes sequentially connected stator, piezoelectric ceramic piece and flexible printed circuit；
Counterweight cylindrical body is laid along stator circumference on stator endosternum, stator support frame is fixed by gluing or interference fit
On counterweight cylindrical body of the stator endosternum with respect to piezoelectric ceramic piece side, opened up at least on the inner ring circumference of stator support frame
One groove, in the inner ring of precompression shell at least one boss provided circumferentially about, the number of groove and boss, to open up position equal
It matches, the boss on precompression shell inner periphery, which sticks into, realizes limitation stator support frame and stator module in stator support frame groove
In the rotation of circumferential direction；
Also wave spring is laid in installation between precompression shell and stator support frame；Line outlet is opened up in precompression shell side, benefit
Pcb board is fixed on precompression shell with screw, and the pcb board is docked with electrical interface；
It further include dirt-proof boot as present invention further optimization, installation is laid between rigid rotator and stator, is passed through
Gluing or interference fit are fixed on the stepped hole that rigid rotator inner periphery opens up；
First annular concaveconvex structure is opened up on the end face of dirt-proof boot relative stator above-mentioned, along stator on stator former endosternum
The counterweight cylindrical body that circumference is laid, both ends are respectively higher than stator endosternum, and stretch out stator endosternum with respect to piezoelectric ceramic piece
The length of side is greater than the length for stretching out stator endosternum relative stiffness rotor side；
The second annular concave-convex structure is opened up along stator circumference in the end face of counterweight cylindrical body relative stiffness rotor, the second annular is recessed
Male structure and first annular concaveconvex structure clearance fit make stator and dirt-proof boot form labyrinth structure when integrating；
Counterweight cylindrical body stretch out stator endosternum with respect to the end face of piezoelectric ceramic piece side and stator support frame inner ring and outer ring it
Between formed circumferential groove matching, by stator support frame and stator module integration install；
As present invention further optimization, rigid rotator above-mentioned and axis are integrally formed, and motor is using single shaft form；Rigidity
The disk of rotor is rigid structure, and the anchor ring for pasting friction plate is opened up on its excircle, opens up and is used on inner periphery
The stepped hole of dirt-proof boot is fixedly mounted；
The end face of dirt-proof boot relative stiffness rotor is hierarchic structure, with the stepped hole being provided on rigid rotator inner periphery
Match, dirt-proof boot is fixed on rigid rotator by gluing or interference fit；
As present invention further optimization, three equally distributed grooves are opened up on the inner ring circumference of stator support frame,
Three equally distributed boss are set on the inner ring circumferential surface of precompression shell, groove is matched with the position that opens up of boss,
Boss on precompression shell inner periphery, which sticks into stator support frame groove, realizes limitation stator support frame and stator module in week
Rotation to direction；As present invention further optimization, match bicircular along what stator circumference was laid on stator former endosternum
Cylinder, both ends are respectively higher than stator endosternum, and stretch out length of the stator endosternum with respect to piezoelectric ceramic piece side greater than stretching
The length of stator endosternum relative stiffness rotor side out；
Counterweight cylindrical body stretch out stator endosternum with respect to the end face of piezoelectric ceramic piece side and stator support frame inner ring and outer ring it
Between formed circumferential groove matching, by stator support frame and stator module integration install；
As present invention further optimization, rigid rotator above-mentioned and axis are integrally formed, and motor is using double shaft forms；One
Molding rigid rotator and stator, stator support frame and precompression housing slot cooperate；The disk of rigid rotator is rigidity knot
Structure opens up the anchor ring for pasting friction plate on excircle；
As present invention further optimization, three equally distributed grooves are opened up on the inner ring circumference of stator support frame,
Three equally distributed boss are set on the inner ring circumferential surface of precompression shell, groove is matched with the position that opens up of boss,
Boss on precompression shell inner periphery, which sticks into stator support frame groove, realizes limitation stator support frame and stator module in week
Rotation to direction；
As present invention further optimization, three equally distributed grooves are opened up on the inner ring circumference of stator support frame,
The inner ring of precompression shell three equally distributed boss provided circumferentially about, boss and inner ring circumference vertical runs, groove with it is convex
The position that opens up of platform matches, and the boss on precompression shell inner periphery, which sticks into stator support frame groove, realizes limitation stator branch
The rotation of support and stator module in circumferential direction.
It is the first embodiment of the invention shown in Fig. 2-Fig. 3, a kind of rotary traveling wave using completely new precompression applying mode is super
Acoustic-electric machine, including rigid rotator component, the side of rigid rotator component are mounted on motor base by bearing, and the other side is suitable
Secondary installation stator module, stator support frame and precompression shell；
Rigid rotator component above-mentioned includes sequentially connected rigid rotator and friction plate；
Stator module above-mentioned includes sequentially connected stator, piezoelectric ceramic piece and flexible printed circuit；
In the present invention, the fixed form of the stator module with web structure is designed to suspended form, eliminates existing skill
Art passes through the screw hole of screw fixed stator, and web width is designed into limit small size, expands stator inner hole diameter.
Counterweight cylindrical body is laid along stator circumference on stator endosternum, stator support frame passes through gluing or interference fit
Stator endosternum is fixed on respect on the counterweight cylindrical body of piezoelectric ceramic piece side, shown in Fig. 7, is justified in the inner ring of stator support frame
Three equally distributed grooves are opened up on week, shown in Fig. 8, are arranged three on the inner ring circumferential surface of precompression shell and are uniformly divided
The boss of cloth, groove are matched with the position that opens up of boss, and it is recessed that the boss on precompression shell inner periphery sticks into stator support frame
It is realized in slot and limits stator support frame and stator module in the rotation of circumferential direction, while limiting stator module and stator support
The movement of frame in radial directions leaves behind stator module and stator support frame in the freedom degree of circumferential direction；
Also wave spring is laid in installation between precompression shell and stator support frame；Wave spring is squeezed by precompression shell, wave spring squeezes
Stator support frame and stator are pressed, stator tooth face pressure is made to complete the application of motor precompression on the friction plate of rigid rotator；
It further include dirt-proof boot, installation is laid between rigid rotator and stator, is fixed on just by gluing or interference fit
On the stepped hole that property rotor inner periphery opens up；
Shown in Fig. 6, first annular concaveconvex structure is opened up on the end face of dirt-proof boot relative stator, shown in Fig. 4, stator former endosternum
On the counterweight cylindrical body laid along stator circumference, both ends are respectively higher than stator endosternum, and it is opposite to stretch out stator endosternum
The length of piezoelectric ceramic piece side is greater than the length for stretching out stator endosternum relative stiffness rotor side；Wherein, in piezoelectric ceramics
The arc pole two sides a quarter subregion of on piece serves as ground wire use in the design, when piezoelectric ceramic piece is attached to stator with Wear Characteristics of Epoxy Adhesive
After upper, the silver layer on the two subregions is connected with stator with conductive silver paste；
Place corresponding with the arc pole two sides a quarter subregion of above-mentioned piezoelectric ceramics on piece is designed to simultaneously on flexible printed circuit
Two ground wires being mutually conducted, are attached on stator web using conducting resinl or Wear Characteristics of Epoxy Adhesive, draw finally by flexible printed circuit
Out, it ensure that suspension stator module safety ground.
Shown in Fig. 5, the second annular concave-convex knot is opened up along stator circumference in the end face of counterweight cylindrical body relative stiffness rotor
Structure, the second annular concave-convex structure and first annular concaveconvex structure clearance fit form labyrinth knot when integrating stator and dirt-proof boot
Structure, for dust-proof and other devices that prevent abrasive dust from falling into through-hole（Such as eyeglass）；
Counterweight cylindrical body stretch out stator endosternum with respect to the end face of piezoelectric ceramic piece side and stator support frame inner ring and outer ring it
Between formed circumferential groove matching, by stator support frame and stator module integration install；
The circumference cylinder that invagination is opened up on the side of precompression shell relative stator support frame, the circumference cylinder for opening up invagination rise
Stator can also be limited while playing the guiding role with stator support frame outside circumference clearance fit to the effect of the dead axle heart
With stator support frame jumping in radial directions, guarantee the registration of the shaft of rotor；
It is also provided with line outlet on precompression shell, pcb board is fixed on line outlet, the screw of fixation using screw
The ground wire on pcb board can also be connected with precompression shell simultaneously.
The slot for storing heat conductive silica gel or heat-conducting silicone grease is opened up on cylindrical surface along stator support frame outside circumference
Road；
The aforementioned axis for being arranged rigid rotator component is hollow structure；
Rigid rotator above-mentioned and axis are integrally formed, and motor the direct output torque revolving speed of rotor and is had using single shaft form
High anti-overload ability；The anchor ring for pasting friction plate is opened up on its excircle, is opened up on inner periphery for being fixedly mounted
The stepped hole of dirt-proof boot；The disk of rigid rotator is rigid structure, and for motor under the precompression that works, rotor there's almost no change
Shape, only the micro-strain of remaining stator web, improves the contact area of friction plate and stator, in identical precompression and friction
Tangent direction friction torque is improved under coefficient, can improve motor output performance to a certain extent；
The end face of dirt-proof boot relative stiffness rotor is hierarchic structure, with the stepped hole being provided on rigid rotator inner periphery
Match, dirt-proof boot is fixed on rigid rotator by gluing or interference fit.It is emphasized that dirt-proof boot here can be with
Above-mentioned rigid rotator designs integral structure, equally can achieve above-mentioned dust-proof effect.
It is second of embodiment of the invention shown in Fig. 9-Figure 10, a kind of rotary traveling wave using completely new precompression applying mode
Motor base is installed by bearing in the side of ultrasound electric machine, including rigid rotator component, rigid rotator component, and the other side is sequentially
Stator module, stator support frame and precompression shell are installed；
Rigid rotator component above-mentioned includes sequentially connected rigid rotator and friction plate；
Stator module above-mentioned includes sequentially connected stator, piezoelectric ceramic piece and flexible printed circuit；
Counterweight cylindrical body is laid along stator circumference on stator endosternum, stator support frame is fixed by gluing or interference fit
On counterweight cylindrical body of the stator endosternum with respect to piezoelectric ceramic piece side, three are opened up on the inner ring circumference of stator support frame
Three equally distributed boss, groove and boss is arranged in equally distributed groove on the inner ring circumferential surface of precompression shell
The position that opens up match, the boss on precompression shell inner periphery, which sticks into stator support frame groove, realizes limitation stator support
The rotation of frame and stator module in circumferential direction；
Also wave spring is laid in installation between precompression shell and stator support frame.
The counterweight cylindrical body laid on stator former endosternum along stator circumference, both ends are respectively higher than abdomen in stator
Plate, and stretch out stator endosternum and be greater than stretching stator endosternum relative stiffness rotor side with respect to the length of piezoelectric ceramic piece side
Length；
Counterweight cylindrical body stretch out stator endosternum with respect to the end face of piezoelectric ceramic piece side and stator support frame inner ring and outer ring it
Between formed circumferential groove matching, by stator support frame and stator module integration install；
Rigid rotator above-mentioned and axis are integrally formed, and motor is using double shaft forms；Integrally formed rigid rotator and stator are determined
Sub- support frame and the cooperation of precompression housing slot；The disk of rigid rotator is rigid structure, is opened up on excircle for pasting
The anchor ring of friction plate.
For structure in embodiment two using double axle construction out, motor can be with both ends while output torque revolving speed, can also be with one
End exports, and the other end installs the sensors such as encoder and carries out closed-loop control, realizes the high accuracy positioning of motor, meanwhile, rigidity
Rotor can also rise after being integrally formed with axis using double shaft forms with the cooperation of stator, stator support frame and precompression housing slot
To dustproof effect.
The above-mentioned structure for hollow shaft is suitable for when axis is solid construction, by the axis of the hollow structure in embodiment two
For the axis replacement of solid construction, as shown in figures 11-13, a kind of rotary traveling wave using completely new precompression applying mode
Motor base is installed by bearing in the side of ultrasound electric machine, including rigid rotator component, rigid rotator component, and the other side is sequentially
Stator module, stator support frame and precompression shell are installed；
Rigid rotator component above-mentioned includes sequentially connected rigid rotator and friction plate；
Stator module above-mentioned includes sequentially connected stator, piezoelectric ceramic piece and flexible printed circuit；
Counterweight cylindrical body is laid along stator circumference on stator endosternum, stator support frame is fixed by gluing or interference fit
On counterweight cylindrical body of the stator endosternum with respect to piezoelectric ceramic piece side, three are opened up on the inner ring circumference of stator support frame
Equally distributed groove, in the inner ring of precompression shell three equally distributed boss provided circumferentially about, boss and inner ring circumference
Vertical runs, groove are matched with the position that opens up of boss, and it is recessed that the boss on precompression shell inner periphery sticks into stator support frame
Realize limitation stator support frame and stator module in the rotation of circumferential direction in slot；；
Also wave spring is laid in installation between precompression shell and stator support frame；Line outlet is opened up in precompression shell side, benefit
Pcb board is fixed on precompression shell with screw, and the pcb board is docked with electrical interface.
The counterweight cylindrical body laid on stator former endosternum along stator circumference, both ends are respectively higher than abdomen in stator
Plate, and stretch out stator endosternum and be greater than stretching stator endosternum relative stiffness rotor side with respect to the length of piezoelectric ceramic piece side
Length；
Counterweight cylindrical body stretch out stator endosternum with respect to the end face of piezoelectric ceramic piece side and stator support frame inner ring and outer ring it
Between formed circumferential groove matching, by stator support frame and stator module integration install；
The circumference cylinder that invagination is opened up on the side of precompression shell relative stator support frame, with stator support frame excircle
Side clearance cooperation, limits stator support frame and stator module jumps in radial direction；
The conduit for storing heat conductive silica gel or heat-conducting silicone grease is opened up on cylindrical surface along stator support frame outside circumference；
Aforementioned rigid rotator component is separated with axis, and rigid rotator component is set on solid shafting；It is contacted in precompression shell with axis
Lay bearing in place；
Integrated rigid rotator is separated into axis and rigid rotator, while in order to increase the stability of axis, in precompression shell
On increase bearing, stator module and stator support frame are still suspended state, and stator module and stator support frame are in circumferential side
It is still to stick into stator support frame groove to realize by the boss on precompression shell inner periphery to the freedom degree with radial direction
's；It is still that wave spring is squeezed by stator seat under the structure, wave spring squeezes the stator support frame and stator module to suspend, finally completes
The application of precompression.
It is emphasized that the stator support frame and precompression shell in all embodiments of the invention are also designed to figure
Structure shown in 14, stator support frame excircle are designed to that stator support frame peripheral milling is flat, the cylinder to invaginate on precompression shell
It is flat that matched precompression shell milling is also configured on face, this flat structure of milling can also play limitation stator support frame and stator
Component sticks into stator branch with the mentioned-above boss by precompression shell inner periphery in the effect of the rotation of circumferencial direction
Realize that the rotation of limitation stator support frame and stator module in circumferential direction is wonderful with playing the same tune on different musical instruments in support groove.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein（Including technology art
Language and scientific term）With meaning identical with the general understanding of those of ordinary skill in the application fields.Should also
Understand, those terms such as defined in the general dictionary, which should be understood that, to be had and the meaning in the context of the prior art
The consistent meaning of justice, and unless defined as here, it will not be explained in an idealized or overly formal meaning.
The meaning of "and/or" described herein refers to that the case where respective individualism or both exists simultaneously wraps
Including including.
The meaning of " connection " described herein can be between component be directly connected to be also possible to pass through between component
Other components are indirectly connected with.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (10)
1. a kind of rotary traveling wave ultrasonic motor using completely new precompression applying mode, it is characterised in that：Including rigid rotator group
The side of part, rigid rotator component is mounted on motor base by bearing, and stator module, stator branch are sequentially installed in the other side
Support and precompression shell；
Rigid rotator component above-mentioned includes sequentially connected rigid rotator and friction plate；
Stator module above-mentioned includes sequentially connected stator, piezoelectric ceramic piece and flexible printed circuit；
Counterweight cylindrical body is laid along stator circumference on stator endosternum, stator support frame is fixed by gluing or interference fit
On counterweight cylindrical body of the stator endosternum with respect to piezoelectric ceramic piece side, opened up at least on the inner ring circumference of stator support frame
One groove, in the inner ring of precompression shell at least one boss provided circumferentially about, the number of groove and boss, to open up position equal
It matches, the boss on precompression shell inner periphery, which sticks into, realizes limitation stator support frame and stator module in stator support frame groove
In the rotation of circumferential direction；
Also wave spring is laid in installation between precompression shell and stator support frame；Line outlet is opened up in precompression shell side, benefit
Pcb board is fixed on precompression shell with screw, and the pcb board is docked with electrical interface.
2. the rotary traveling wave ultrasonic motor according to claim 1 using completely new precompression applying mode, it is characterised in that：
It further include dirt-proof boot, installation is laid between rigid rotator and stator, is fixed on rigidity by gluing or interference fit and is turned
On the stepped hole that sub- inner periphery opens up；
First annular concaveconvex structure is opened up on the end face of dirt-proof boot relative stator above-mentioned, along stator on stator former endosternum
The counterweight cylindrical body that circumference is laid, both ends are respectively higher than stator endosternum, and stretch out stator endosternum with respect to piezoelectric ceramic piece
The length of side is greater than the length for stretching out stator endosternum relative stiffness rotor side；
The second annular concave-convex structure is opened up along stator circumference in the end face of counterweight cylindrical body relative stiffness rotor, the second annular is recessed
Male structure and first annular concaveconvex structure clearance fit make stator and dirt-proof boot form labyrinth structure when integrating；
Counterweight cylindrical body stretch out stator endosternum with respect to the end face of piezoelectric ceramic piece side and stator support frame inner ring and outer ring it
Between formed circumferential groove matching, by stator support frame and stator module integration install.
3. the rotary traveling wave ultrasonic motor according to claim 2 using completely new precompression applying mode, it is characterised in that：
Rigid rotator above-mentioned and axis are integrally formed, and motor is using single shaft form；The disk of rigid rotator is rigid structure, outside it
The anchor ring for pasting friction plate is opened up on circumference, and the stepped hole for dirt-proof boot to be fixedly mounted is opened up on inner periphery；
The end face of dirt-proof boot relative stiffness rotor is hierarchic structure, with the stepped hole being provided on rigid rotator inner periphery
Match, dirt-proof boot is fixed on rigid rotator by gluing or interference fit.
4. the rotary traveling wave ultrasonic motor according to claim 3 using completely new precompression applying mode, it is characterised in that：
Three equally distributed grooves are opened up on the inner ring circumference of stator support frame, are set on the inner ring circumferential surface of precompression shell
Three equally distributed boss are set, groove is matched with the position that opens up of boss, and the boss on precompression shell inner periphery sticks into
Realize limitation stator support frame and stator module in the rotation of circumferential direction in stator support frame groove.
5. the rotary traveling wave ultrasonic motor according to claim 1 using completely new precompression applying mode, it is characterised in that：
The counterweight cylindrical body laid on stator former endosternum along stator circumference, both ends are respectively higher than stator endosternum, and stretch out
Stator endosternum is greater than the length for stretching out stator endosternum relative stiffness rotor side with respect to the length of piezoelectric ceramic piece side；
Counterweight cylindrical body stretch out stator endosternum with respect to the end face of piezoelectric ceramic piece side and stator support frame inner ring and outer ring it
Between formed circumferential groove matching, by stator support frame and stator module integration install.
6. the rotary traveling wave ultrasonic motor according to claim 5 using completely new precompression applying mode, feature exist
In：Rigid rotator above-mentioned and axis are integrally formed, and motor is using double shaft forms；Integrally formed rigid rotator and stator are determined
Sub- support frame and the cooperation of precompression housing slot；The disk of rigid rotator is rigid structure, is opened up on excircle for pasting
The anchor ring of friction plate.
7. the rotary traveling wave ultrasonic motor according to claim 6 using completely new precompression applying mode, it is characterised in that：
Three equally distributed grooves are opened up on the inner ring circumference of stator support frame, are set on the inner ring circumferential surface of precompression shell
Three equally distributed boss are set, groove is matched with the position that opens up of boss, and the boss on precompression shell inner periphery sticks into
Realize limitation stator support frame and stator module in the rotation of circumferential direction in stator support frame groove.
8. the rotary traveling wave ultrasonic motor according to claim 2 or 5 using completely new precompression applying mode, feature exist
In：The circumference cylinder that invagination is opened up on the side of precompression shell relative stator support frame, with stator support frame excircle
Side clearance cooperation, limits stator support frame and stator module jumps in radial direction；
The conduit for storing heat conductive silica gel or heat-conducting silicone grease is opened up on cylindrical surface along stator support frame outside circumference；
Aforementioned rigid rotator component is hollow structure.
9. the rotary traveling wave ultrasonic motor according to claim 2 or 5 using completely new precompression applying mode, feature exist
In：The circumference cylinder that invagination is opened up on the side of precompression shell relative stator support frame, with stator support frame excircle
Side clearance cooperation, limits stator support frame and stator module jumps in radial direction；
The conduit for storing heat conductive silica gel or heat-conducting silicone grease is opened up on cylindrical surface along stator support frame outside circumference；
Aforementioned rigid rotator component is separated with axis, and rigid rotator component is set on solid shafting；
Bearing is laid in precompression shell and axis contact position.
10. the rotary traveling wave ultrasonic motor according to claim 9 using completely new precompression applying mode, feature exist
In：Three equally distributed grooves are opened up on the inner ring circumference of stator support frame, are set on the inner ring circumference of precompression shell
Three equally distributed boss, boss and inner ring circumference vertical runs are set, groove is matched with the position that opens up of boss, precompression
Boss on shell inner periphery, which sticks into stator support frame groove, realizes limitation stator support frame and stator module in circumferential direction
Rotation.
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