CN205493950U - Ultrasound energy transducing device - Google Patents
Ultrasound energy transducing device Download PDFInfo
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- CN205493950U CN205493950U CN201620111623.0U CN201620111623U CN205493950U CN 205493950 U CN205493950 U CN 205493950U CN 201620111623 U CN201620111623 U CN 201620111623U CN 205493950 U CN205493950 U CN 205493950U
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Abstract
The utility model discloses an ultrasound energy transducing device, including a transducer and a change width of cloth pole, becoming width of cloth pole and including input rod and output pole, input rod connects on the transducer, the output pole is connected on input rod's link, and exports the center pin perpendicular to input rod's of pole center pin, and first output and second output all are used for connecting the ultrasonic knife cutter arbor. The utility model provides an ultrasound energy transducing device sets up the T shape structure of connecting the output pole into input rod through becoming a pole, comes to be connected with the transducer to form the resonance body, and wherein, the transducer is through the change width of cloth pole transmission conversion back of T shape for first output and second output have great, stronger amplitude, thereby realized strong, the ultrasound energy transducing device that can dual drive output of an amplitude.
Description
Technical field
This utility model relates to a kind of field of medical device, particularly relates to a kind of ultrasonic transduction device.
Background technology
Ultrasound knife system is the most medical in medical field, and the core component of ultrasound knife system is medical power changing device, doctor
The service life of ultrasound knife surgical effect and ultrasound knife is determined by the quality of power transducer.Wherein, impedance is the lowest, efficiency
The highest, the most medical power changing device is the most excellent because there is Low ESR, high efficiency medical power changing device could be in identical input
Obtain the mechanical energy of bigger dither under conditions of power, export bigger amplitude.
In prior art, Ethicon proposes a kind of ultrasound knife device: what four piezoelectric ceramic pieces were symmetrical is distributed in transducer
Center, transducer has the output of two symmetrical terminals simultaneously, and the vibration of two terminals is symmetrical, can be simultaneously
Driving two knife bars, medical personnel can select one therein as required.Inventor finds, above-mentioned ultrasound knife device is deposited
In following defect: first, above-mentioned ultrasound knife device has bigger restriction to the basic parameter amplitude of vibration, and reason is as follows: though
The transducer center that is distributed in that right four piezoelectric ceramic pieces are symmetrical, but the only two panels that amplitude is really worked, say, that
Amplitude ratio traditional transducers has lacked one times in theory, thus not enough in order to make up amplitude, the technical specification of piezoelectric patches is just carried
Having gone out requirements at the higher level, the requirement improved then may not reach in technique, or can improve cost；Secondly, ultrasound knife device
Structural strength be restricted, reason is as follows: in order to make up the deficiency of amplitude, by reducing the straight of two terminal output end faces
Footpath, although this has relaxed the deficiency of amplitude to a certain extent, but cannot solve its amplitude root problem by bigger restriction,
Further, the amplitude of output end face is made too small, and the intensity of structure cannot ensure, may have a strong impact on the service life of transducer.
Utility model content
The purpose of this utility model be to provide a kind of amplitude relatively strong, can the ultrasonic transduction device of Dual Drive output.
In order to solve above-mentioned technical problem, this utility model provides a kind of ultrasonic transduction device, including transducer and change
Width bar；
Described horn includes input lever and take-off lever, described input lever to include along the most opposing of described input lever setting
The input put and connection end, described input is connected on described transducer, and described input lever is coaxial with described transducer
Arrange；Described take-off lever is connected to described connection end, and the central axis of described take-off lever is in the central shaft of described input lever,
Described take-off lever has the first outfan along self axial opposing setting and the second outfan, described first outfan and institute
State the second outfan all for connecting ultrasound knife knife bar.
Wherein, the shaft being positioned at described input lever both sides of described take-off lever centered by described input lever in mirror image pair
Claim.
Wherein, the outer surface of described input lever is straight cylindrical surfaces.
Wherein, described take-off lever is less than or equal to described input lever along self axial length along self axial length
Degree.
Wherein, the diameter of described take-off lever is less than or equal to the diameter of described input lever.
Wherein, the outer surface of described take-off lever is straight cylindrical surfaces.
Wherein, the outer surface of the shaft that described take-off lever is positioned at described input lever both sides is all the conical surface, and described first defeated
Go out end and described second outfan all has the end face that diameter is less.
Wherein, described transducer include pretension bar and the rear mass being sheathed on successively on described pretension bar, brilliant heap and
Front mass；
Described pretension bar includes that the outer peripheral face integrally connected is smooth head and the body of rod, and described head is cylindricality head,
The diameter of described head is more than the diameter of the described body of rod, and described head includes head contact surface；
Described rear mass has the first contact surface and the second contact surface being oppositely arranged, and described first contact surface is attached at
Described head contact surface；
Described brilliant heap has brilliant heap contact surface, and described brilliant heap contact surface is attached at described second contact surface；
Described front mass is connected to the end of the described body of rod, and described front mass is attached on described brilliant heap；
Described horn is connected on described front mass.
Wherein, the edge of described first contact surface is provided with chamfering or rounding；And/or,
The edge of described first contact surface and the coincident of described head contact surface；And/or, described second contact surface
Area is more than the area of described brilliant heap contact surface；And/or, the internal diameter of described second contact surface is than the internal diameter of described brilliant heap contact surface
Little 0.2～0.5mm；And/or, described front mass has front joint face, and described front mass surface is attached on described brilliant heap；Described
Transducer also includes that flange, described flange are based on the outer surface at described front joint face place；And/or, described front mass
Also including and the rear joint face of the described opposing setting of front joint face, the input of described input lever is connected to described rear joint face
On, the diameter of described input is less than or equal to the diameter of described rear joint face.
This utility model embodiment additionally provides another kind of a kind of ultrasonic transduction device, including transducer and horn；
Described transducer includes pretension bar and the rear mass being sheathed on successively on described pretension bar, brilliant heap and front quality
Block；
Described horn includes input lever and take-off lever, described input lever to include along the most opposing of described input lever setting
The input put and connection end, described input is connected on described front mass；Described take-off lever is connected to described connection end,
And the central axis of described take-off lever is in the central shaft of described input lever, described take-off lever has along self the most opposing setting
The first outfan put and the second outfan, described first outfan and described second outfan are all used for connecting ultrasound knife cutter
Bar；
The end that connects of described input lever is connected to the center of described take-off lever, and described take-off lever includes respectively from described
Center extends to first body of rod of described first outfan and extends to described second outfan from described center
Second body of rod, described first body of rod and described second body of rod centered by described input lever in specular.
The ultrasonic transduction device that this utility model provides connects the T-shaped of take-off lever and ties by horn is set to input lever
Structure, to be connected to be formed resonant body with transducer, wherein, transducer after the horn transmitting and converting of T-shaped, the horn of T-shaped
Due to the vibration characteristics that it is special, so that the overall vibration displacement that horn is under same mode of oscillation is distributed as: defeated
Enter bar and take-off lever all respectively along self axial distribution extensional vibration displacement, and owing to input lever is substantially at the joint of take-off lever
Point position so that take-off lever is less along self axial vibration displacement distribution, then has bigger with the take-off lever of horn
Vibration displacement is distributed, and take-off lever two ends are substantially at crest location, and then make the first outfan and the second outfan produce high frequency
Vibration, and vibration displacement distribution to the first outfan and the second outfan time, Oscillation Amplitude is further magnified so that
First outfan and the second outfan have more greatly, stronger amplitude, it is achieved thereby that a kind of amplitude compared with strong, can Dual Drive defeated
The ultrasonic transduction device gone out.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical solution of the utility model, below by embodiment required use attached
Figure is briefly described, it should be apparent that, the accompanying drawing in describing below is only embodiments more of the present utility model, for
From the point of view of those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain it according to these accompanying drawings
His accompanying drawing.
Fig. 1 is the schematic diagram of the ultrasonic transduction device that this utility model embodiment provides；
Fig. 2 is the decomposing schematic representation of the transducer of the ultrasonic transduction device shown in Fig. 1；
Fig. 3 is the schematic diagram of the ultimate principle finite element analysis of the horn of the ultrasonic transduction device shown in Fig. 1；
Fig. 4 is the schematic diagram of another horn in the ultrasonic transduction device of Fig. 1；
Fig. 5 is the schematic diagram of the another horn in the ultrasonic transduction device of Fig. 1；
Fig. 6 is the schematic diagram of another horn in the ultrasonic transduction device of Fig. 1；
Fig. 7 is the pressure-plotting of the piezoelectric patches in the brilliant heap of the transducer of prior art；
Fig. 8 is the pressure-plotting of the piezoelectric ceramic piece of the brilliant heap in the transducer of the ultrasonic transduction device shown in Fig. 1；
Fig. 9 is the vibration displacement scattergram of the piezoelectric patches in the brilliant heap of the transducer of prior art；
Figure 10 is that the vibration displacement of the piezoelectric ceramic piece of the brilliant heap in the transducer of the ultrasonic transduction device shown in Fig. 1 divides
Butut.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, to the technical scheme in this utility model embodiment
It is clearly and completely described.
Refer to Fig. 1 and Fig. 2, a kind of ultrasonic transduction device 100 provided for this utility model, including transducer 1 and change
Width bar 2；Transducer 1 includes pretension bar 11 and the rear mass 12 being sheathed on successively on pretension bar 11, brilliant heap 13 and front quality
Block 14；Horn 2 includes input lever 21 and take-off lever 22, and input lever 21 includes the input 21a of the most opposing setting
It is connected on front mass 14 with connecting 21b, input 21a；Take-off lever 22 is connected on the connection end 21b of input lever 21, and
The central axis of take-off lever 22 is in the central shaft of input lever 21, and take-off lever 22 has first along self axial opposing setting
Outfan 221 and the second outfan 222, the first outfan 221 and the second outfan 222 are all used for connecting ultrasound knife knife bar.
Connecting the T-shaped structure of take-off lever 22 by horn 2 being set to input lever 21, being connected formation with transducer 1
Resonant body, wherein, transducer 1 is after horn 2 transmitting and converting of T-shaped, and the horn 2 of T-shaped is special due to its special vibration
Property, so that the overall vibration displacement that horn 2 is under same mode of oscillation is distributed as: input lever 21 and take-off lever 22 are all
Respectively along self axial distribution vibration displacement, and input lever 21 is substantially at the node position of take-off lever 22 so that input lever 21
The vibration displacement distribution axial along self is less, and the take-off lever 22 of horn 2 then has bigger vibration displacement distribution, enters
And make the first outfan 221 and the second outfan 222 produce the vibration of high frequency, and it is distributed to the first outfan at vibration displacement
221 and during the second outfan 222, Oscillation Amplitude is further magnified so that the first outfan 221 and the second outfan 222 have
Have more greatly, stronger amplitude, it is achieved thereby that a kind of amplitude is relatively strong, can the ultrasonic transduction device 100 of Dual Drive output.
Refer to Fig. 2, for the decomposing schematic representation of transducer.
In the present embodiment, pretension bar 11 includes head 111 and the body of rod 112, and the diameter of head 111 is more than the body of rod 112
Diameter, wherein, head 111 and the body of rod 112 can be one-body molded, it is also possible to be threadedly connected in the body of rod 112 for head 111.In advance
Tight bar 11 is for providing pretightning force to make brilliant heap 13 uniform-compression power for brilliant heap 13, thus the electric energy high efficiency of brilliant heap 13 is converted
For mechanical energy.
In the present embodiment, rear mass 12 is metal derby, and rear mass 12 is sheathed on the body of rod 112, rear mass 12
Having the first contact surface 121 and the second contact surface 122 being oppositely arranged, the first contact surface 121 is resisted against in head 111.
In the present embodiment, brilliant heap 13 has brilliant heap contact surface, and brilliant heap contact surface is attached at the second contact surface 122.Wherein,
Brilliant heap 13 includes four piezoelectric ceramic pieces 131 and four plate electrode sheets 132, and brilliant heap 13 is by piezoelectric ceramic piece 131 and an electrode slice
132 alternate repetitions splice and form, and the piezoelectric ceramic piece 131 being positioned at first place in i.e. brilliant heap 13 forms brilliant heap contact surface；Brilliant heap 13 overlaps
Being located on the body of rod 112, brilliant heap contact surface is close on the second contact surface 122.Certainly, in other embodiments, the knot of brilliant heap 13
Structure can also be other, the relative set according to actual applicable cases, such as piezoelectric ceramic piece 131 or piezoelectric patches and electrode
The quantity of sheet 132 is respectively 2,6 or 8.
In the present embodiment, front mass 14 has front joint face 141 and rear joint face 142, front joint face 141 company of offering
Connecing hole (not shown), front joint face 141 is close on brilliant heap 13, and i.e. front joint face 141 is close in brilliant heap 13 be positioned at position, end
On electrode slice 132, the connection of the end of internal thread hole and the body of rod 112.Front mass 14 forms clamping structure with rear mass 12
Pretightning force is provided so that brilliant heap 13 can produce uniform pressure for middle brilliant heap 13.
In the present embodiment, refer to Fig. 1, input lever 21 is revolution, it is preferred that the input 21a mono-of input lever 21
Body is connected on the rear joint face 142 of front mass 14, preferably the vibration produced on transducer 1 is transferred to horn 2
On so that the integrated connection intensity of ultrasonic transduction device 100 increases.Preferably, the outer surface of input lever 21 is straight cylindrical surfaces, with
The vibration distribution making input lever 21 is uniform, and mode of oscillation is more reasonable, thus the structure of horn 2 plays the work of optimization further
With.Certainly, in other embodiments, input lever 21 can be connected on front mass 14 with screw.Certainly, in other embodiments
In, input lever 21 can also be square pole or tapered rod.
In the present embodiment, take-off lever 22 is revolution, and take-off lever 22 is integrally connected to the connection end 21b of input lever 21
On, and the central axis of take-off lever 22 is in the central shaft of input lever 21, to form the horn 2 of T-shaped, the first outfan 221
Bolt hole 221a is offered respectively with the second outfan 222, so that ultrasound knife knife bar can be threadedly connected in bolt hole 221a, real
The Dual Drive output of existing ultrasonic transduction device 100.Medical personnel can select the first outfan 221 or second defeated as required
Go out end 222 to perform the operation to connect ultrasound knife knife bar, wherein, when using a wherein ultrasound knife, another ultrasound knife knife bar
Even if not using, but still and the same dither that does of ultrasound knife knife bar in using, this dither can be to just in work
The ultrasound knife knife bar made applies lasting counteracting force, and the ultrasound knife knife bar in work can be allowed to keep favourable with soft tissue all the time
Contact.
Refer to Fig. 3, for the ultimate principle finite element analysis schematic diagram of horn 2, input lever 21 is axial along self
Vibration displacement be substantially distributed in connection end 21b at, from Fig. 2 it is known that the maximum axial vibration displacement of input lever 21 is
0.15；And take-off lever 22 is relatively big along self axial vibration displacement distribution, and at the first outfan 221 and the second outfan
Crest or wave trough position it is substantially at 222, same, from Fig. 2 it is known that the maximum axial vibration displacement of input lever 21 is
1；To sum up, it can be deduced that, the maximum axial vibration displacement of the maximum axial vibration displacement/take-off lever 22 of take-off lever 22 is 1/0.15
=6.67, i.e. amplified by the horn 2 of T-shaped, the vibration displacement of transducer 1 can be amplified to more than 6 times from the first outfan
221 and second outfan 222 export.
To sum up, the vibration nodal point of horn 2, by the structure of horn 2 carries out creative innovation, is moved by inventor
To the connection end 21b vicinity of input lever 21, so that the vibration displacement of input lever 21 is substantially distributed at node, and take-off lever
22 the most then have a bigger vibration displacement distribution along self, and shaking at the first outfan 221 and the second outfan 222
The dynamic position being in crest or trough, thus highly desirable it is exaggerated the vibration displacement from transducer 1.
In order to further improve, refer to Fig. 1, the shaft being positioned at input lever 21 both sides of take-off lever 22 is with input lever
In specular centered by 21.
By making take-off lever 22 be positioned at the shaft specular of input lever 21 both sides, so that the first outfan 221 and second
Outfan 222 has identical frequency of vibration and Oscillation Amplitude.
In the present embodiment, take-off lever 22 be positioned at input lever 21 both sides shaft along self axial length, shape
Identical.The i.e. centre position of take-off lever 22 is connected on the connection end 21b of input lever 21.Ultrasonic transduction device 100 operational vibration
Time, the frequency of vibration that the first outfan 221 exports with the second outfan 222 is identical with Oscillation Amplitude.It should be understood that such as Fig. 4
Shown in, the shaft at the first outfan 221 place can be less than the shaft at the second outfan 222 place along self axial length
Along the length that self is axial；Or as it is shown in figure 5, the shaft at the first outfan place can be big along self axial length
Shaft in the second outfan 222 place is along self axial length.
It should be understood that the shaft at the first outfan 221 place is first body of rod, the shaft at the second outfan 222 place
Be second body of rod, i.e. take-off lever 22 include respectively from center extend to the first outfan 221 first body of rod and from
Heart position extends to second body of rod of the second outfan 222, first body of rod and second body of rod centered by input lever 22 in mirror image
Symmetrical.
In order to further improve, take-off lever 22 is less than or equal to input lever 21 along certainly along self axial length
The length that body is axial.
By take-off lever 22 and input lever 21 relative length being between the two defined, optimize horn 2 further
Structure so that the vibration nodal point of horn 2 can be tried one's best close to the input face of input lever 21 so that can entering of take-off lever 22
One step amplifies the vibration displacement from transducer 1.
In the present embodiment, it is preferred that the diameter of take-off lever 22, equal to the diameter of input lever 21, optimizes horn 2
Structure, it is possible to strengthening the vibration on take-off lever 22 further, the first outfan 221 and second improving take-off lever 22 further is defeated
Go out the vibration displacement of end 222.Certainly, in other embodiments, the diameter of take-off lever 22 is also less than the diameter of input lever 21.
In order to further improve, refer to Fig. 1, the outer surface of take-off lever 22 is straight cylindrical surfaces.
By being straight cylindrical surfaces by the outer surface of take-off lever 22, improve the structural strength of horn 2, optimize mode of oscillation.
In the present embodiment, the outer surface of take-off lever 22 is smooth straight cylindrical surfaces, and smooth outer surface makes take-off lever
The vibration of 22 can be distributed to be more uniformly distributed, and also can improve the structural strength of the shaft of straight cylinder, it is to avoid horn 2 was using
Journey ruptures, improves the reliability of ultrasonic transduction device 100 further.Certainly, in other embodiments, as shown in Figure 6, output
Bar 22 can also be other structure, and the outer surface of the shaft that take-off lever 22 is positioned at input lever 21 both sides is all the conical surface, and first is defeated
Go out end 221 and the second outfan 222 is all the end face that diameter is less.Wherein, by take-off lever 22 being set to two conical surfaces, and
And first outfan 221 and the second outfan 222 be all end face less in the conical surface, strengthen the first outfan 221 further
With the vibration displacement of the second outfan 222, thus further enhance the oscillation intensity of ultrasonic transduction device 100.Certainly, at other
In embodiment, take-off lever 22 can be with square pole.
In order to further improve, refer to Fig. 2, head 111 is cylindricality head 111, and head 111 includes that head contacts
Face 111a, the first contact surface 121 of rear mass 12 is attached at head contact surface 111a.
The cylindricality head 111 being smooth by outer peripheral face produces uniform pressure distribution, then can be the most uniform by power
Pass to rear mass thereafter 12 and brilliant heap 13, allow ultrasonic transduction device 100 brilliant heap 13 can obtain and be more uniformly distributed
Pressure distribution, thus be effectively improved the electromechanical conversion efficiency of transducer 1, it is to avoid uneven due to stress distribution in prior art
Even and produce meaningless heat to affect the suppressed range of ultrasonic transduction device 100 and the situation of power output, it is achieved ultrasonic to change
Can the Low ESR of device 100, the performance of high output.
In the present embodiment, pretension bar 11 can be screw rod, and the side face of its screw rod head 111 is wholely set column-shaped projection and forms bar
111.When head 111 is under pressure, owing to the outer peripheral face of head 111 is smooth cylinder, therefore its internal pressure can be all
Even distribution, it is to avoid as the outer peripheral face of the head 111 of pretension bar 1110 of the prior art is polygon and concentrate on corner should
Power, so that pressure distribution is uneven, affects the transmission of packing pressure.The body of rod 112 arranges outer spiral shell away from the end of head 111
Stricture of vagina (not shown), in order to front metal derby is attached.After when, mass 12, brilliant heap 13, front mass 14 are sheathed on bar successively
On body 112, and when front mass 14 is threaded connection and is closely attached on the end of the body of rod 112, head 111 stress, and
This Stress Transfer is given rear mass 12 thereafter, brilliant heap 13, and brilliant heap 13, by uniform pressure, has when brilliant heap 13 connects
During with the high frequency electrical signal of ultrasonic transduction device 100 same frequency, the piezoelectric ceramic piece 131 in brilliant heap 13 and ultrasonic transduction device
100 produce high-frequency resonant together, thus convert electrical energy into mechanical energy.
Table 1 piezoelectric ceramic piece 131 pressure distribution
In order to intuitively draw the transducer 1 in the present embodiment compare with transducer 1 of the prior art have more excellent
Performance, as shown in Fig. 7, Fig. 8 and upper table 1, the pressure distribution produced due to pretightning force for brilliant heap 13 is had by Abagus
Limit unit calculates, and determines that piezoelectric patches produces due to pretension by the ratio of minimum pressure on the piezoelectric patches in brilliant heap 13 with maximum pressure
Raw pressure uniformity.The pretension bar 11 of transducer 1 of the prior art is turret head screw rod, its head easily heap at seamed edge
Long-pending stress, the stress distribution causing turret head is uneven, and then passes to rear mass 12 thereafter, brilliant heap 13 and antecedent successively
The pretightning force of gauge block 14 also skewness, as shown in Table 1, piezoelectric patches of the prior art minimum with maximum pressure ratio is
0.67；And the transducer 1 that this utility model provides makes its internal stress distribution equal by the head 111 that outer peripheral face is smooth
Even, then power can be uniformly transferred successively to rear mass 12 thereafter, brilliant heap 13, front mass 14 and horn 2 so that
The pressure distribution that piezoelectric ceramic piece 131 in brilliant heap 13 produces due to pretightning force is more uniformly distributed, and as shown in Table 1, this practicality is new
The piezoelectric patches of type is minimum is 0.88 with maximum pressure ratio.Can be demonstrate,proved in embodiment of the present utility model by the contrast of above-mentioned table 1
The structure of the smooth head 111 of outer peripheral face achieve pressure distribution evenly, thus avoid in prior art due to should
Power skewness and produce meaningless heat to affect the suppressed range of transducer 1 and the situation of power output, it is achieved ultrasonic
The Low ESR of transducer mount 100100, the performance of high output.
Table 2 thickness direction Displacements Distribution
In order to intuitively draw the transducer 1 in the present embodiment compare with transducer 1 of the prior art have more excellent
Performance, as shown in Fig. 9, Figure 10 and upper table 2, the piezoelectric patches utilizing the accurate simulation calculation of Abaqus to obtain in brilliant heap 13 exists
Displacements Distribution under resonant condition, can be seen that the vibration uniformity of piezoelectric patches from Displacements Distribution.By upper table 2 to two kinds of transducings
The contrast of device 1, it appeared that transducer of the present utility model 1 possesses preferably vibrates the uniformity, and then possesses more preferable resonance
Characteristic, the energy of output more concentrates, more conducively surgical cut, thus realizes the low-resistance of ultrasonic transduction device 100100 further
The performance of output anti-, high.
In order to further improve, the edge of the first contact surface 121 arranges chamfering or rounding.
In the present embodiment, the edge of the first contact surface 121 arranges chamfering, so that the diameter to rear mass 12 side face
Do the incremental structure of appropriateness, approximately form as the anchor ring with a transition shoulder, so that rear mass 12 can be more preferable
Receive the pretightning force of head 111 simultaneously, improve the resonance characteristic of ultrasonic transduction device 100 the most further.Second contact surface 122
For smooth anchor ring.In other embodiments, the edge of the first contact surface 121 can also arrange rounding.
In order to further improve, the edge of the first contact surface 121 and the coincident of head contact surface 111a.
By the coincident by the edge of the first contact surface 121 Yu head contact surface 111a so that pre-in head 111
Clamp force can bigger efficiency pass to rear mass 12, for thereafter brilliant heap 13 provide be more uniformly distributed and greater concentration of energy
Amount, so that the pressure of the piezoelectric ceramic piece 131 in brilliant heap 13 and vibration are more uniform.Certainly, in other embodiments, after
Mass 12 can also corresponding according to practical situation change to the contact area of head 111.
In order to further improve, the area of the second contact surface 122 is more than the area of brilliant heap contact surface.
By making the area area more than brilliant heap contact surface of the second contact surface 122 so that the internal diameter of rear mass 12
Less than the internal diameter of brilliant heap 13, and then make can evenly be distributed on brilliant heap 13 from the pressure of rear mass 12, it is to avoid brilliant
There is the situation that stress is concentrated in heap 13 internal diameter, thus ensures the vibration that the piezoelectric ceramic piece 131 in brilliant heap 13 is more uniformly distributed.
In the present embodiment, inventor by substantial amounts of it is demonstrated experimentally that find the second contact surface 122 internal diameter connect than brilliant heap
During internal diameter little 0.2～0.5mm of contacting surface, the pressure from rear mass 12 can evenly be distributed on brilliant heap 13, it is possible to more
Further ensure the vibration that the piezoelectric ceramic piece 131 in brilliant heap 13 is more uniformly distributed.
In order to further improve, transducer 1 also includes that flange 3, flange 3 are based in outside front joint face 141 place
On surface (at transducer node).
In the present embodiment, the outer surface at front joint face 141 place of front mass 14 projects annular projection i.e. flange 3,
So that flange 3 is positioned on the node of transducer 1.By flange 3 being based in front mass 14, do not affecting shaking of horn 2
While dynamic output, it is possible to preferably ultrasonic transduction device 100 is fixed on external equipment (shell of such as ultrasound knife), right
Whole ultrasonic transduction device 100 plays mechanical support effect.Certainly, in other embodiments, flange 3 can also be arranged at ultrasonic
On other position of transducer mount 100.
In order to further improve, the input 21a of input lever 21 is connected on rear joint face 142, input 21a's
Diameter is less than the diameter of rear joint face 142.
In the present embodiment, the junction of input lever 21 and front mass 14 forms the structure of step, so that incrementally increasing
Transducer 1 pass over Oscillation Amplitude, thus further enhance the vibration output of ultrasonic transduction device 100.Certainly, at other
In embodiment, the outer surface of input lever 21 can also with the flush with outer surface of front mass 14, or, input 21a is slightly larger than
Rear joint face 142, etc..
When ultrasonic transduction device 100 starts to assemble, it is necessary first to successively by the most sheathed to rear mass 12 and brilliant heap 13
On the body of rod 112, and it is close to adjacent parts；Then the front joint face 141 of front mass 14 being connected with horn 2 one
It is threadingly attached on the body of rod 112, and is close on brilliant heap 13, provide, for brilliant heap 13, the pressure produced by pretightning force；Wait to surpass
After sound transducer mount 100 installs, and then ultrasonic transduction device 100 is connected on power supply, the piezoelectricity pottery in brilliant heap 13
Ceramics 131 converts electrical energy into mechanical energy, and then passes to the first outfan 221 and the second outfan 222 of horn 2, makes
Obtain horn 2 and realize vibration.
The ultrasonic transduction device 100 that this utility model provides connects take-off lever by horn 2 is set to input lever 21
The T-shaped structure of 22, to be connected to be formed resonant body with transducer 1, wherein, transducer 1 after horn 2 transmitting and converting of T-shaped,
The horn 2 of T-shaped is due to by its structure influence, and the horn 2 overall vibration displacement under same mode of oscillation is divided
Cloth is: input lever 21 and take-off lever 22 are all respectively along self axial distribution vibration displacement, and due to the vibration nodal point of horn 2
It is positioned near the connection end 21b of input lever 21 so that input lever 21 is less along self axial vibration displacement distribution, substantially locates
In node, with the take-off lever 22 of horn 2 then there is bigger vibration displacement distribution, and then make the first outfan 221 and the
Two outfans 222 produce the vibration of high frequency, and when vibration displacement distribution is to the first outfan 221 and the second outfan 222,
Oscillation Amplitude is further magnified so that the first outfan 221 and the second outfan 222 has more greatly, stronger amplitude, thus
Achieve a kind of amplitude relatively strong, can the ultrasonic transduction device 100 of Dual Drive output.
The ultrasonic transduction device 100 that this utility model provides is also by the shaft making take-off lever 22 be positioned at input lever 21 both sides
Specular, so that the first outfan 221 and the second outfan 222 have identical frequency of vibration and Oscillation Amplitude.
The ultrasonic transduction device 100 that this utility model provides produces also by the head 111 that outer peripheral face is smooth uniformly
Pressure distribution, can uniformly transfer power then successively to rear mass 12 thereafter and brilliant heap 13, allows ultrasonic transduction device
100 brilliant heap 13 can obtain the pressure distribution being more uniformly distributed, thus be effectively improved the electromechanical conversion efficiency of transducer 1, keep away
Exempt from prior art produces meaningless heat to affect the compression width of ultrasonic transduction device 100 owing to stress distribution is uneven
Degree and the situation of power output, it is achieved the Low ESR of ultrasonic transduction device 100, the performance of high output.
The ultrasonic transduction device 100 that this utility model provides, also by flange 3 is based in front mass 14, is not affecting
While the vibration output of horn 2, it is possible to preferably ultrasonic transduction device 100 is fixed on external equipment (such as ultrasound knife
Shell) on, whole ultrasonic transduction device 100 is played mechanical support and protective effect.
The ultrasonic transduction device 100 that this utility model provides is also by the junction shape making input lever 21 and front mass 14
Becoming the structure of step, so that incrementally increasing the Oscillation Amplitude that passes over of transducer 1, thus further enhancing ultrasonic transduction device
The vibration output of 100.
It is above preferred implementation of the present utility model, it is noted that for those skilled in the art
For, on the premise of without departing from this utility model principle, it is also possible to make some improvements and modifications, these improvements and modifications are also
It is considered as protection domain of the present utility model.
Claims (10)
1. a ultrasonic transduction device, it is characterised in that include transducer and horn；
Described horn includes that input lever and take-off lever, described input lever include the axial opposing setting along described input lever
Input and connection end, described input is connected on described transducer, and the setting coaxial with described transducer of described input lever；
Described take-off lever is connected to described connection end, and the central axis of described take-off lever is in the central shaft of described input lever, described
Take-off lever has the first outfan along self axial opposing setting and the second outfan, described first outfan and described
Two outfans are all used for connecting ultrasound knife knife bar.
Ultrasonic transduction device the most according to claim 1, it is characterised in that described take-off lever be positioned at described input lever two
The shaft of side centered by described input lever in specular.
Ultrasonic transduction device the most according to claim 1 and 2, it is characterised in that the outer surface of described input lever is straight circle
Cylinder.
Ultrasonic transduction device the most according to claim 1 and 2, it is characterised in that described take-off lever is axial along self
Length is less than or equal to described input lever along self axial length.
Ultrasonic transduction device the most according to claim 1 and 2, it is characterised in that the diameter of described take-off lever less than or
Diameter equal to described input lever.
Ultrasonic transduction device the most according to claim 1 and 2, it is characterised in that the outer surface of described take-off lever is straight circle
Cylinder.
Ultrasonic transduction device the most according to claim 1 and 2, it is characterised in that described take-off lever is positioned at described input lever
The outer surface of the shaft of both sides is all the conical surface, and described first outfan and described second outfan all have the end that diameter is less
Face.
Ultrasonic transduction device the most according to claim 1 and 2, it is characterised in that described transducer includes pretension bar and depends on
Secondary rear mass, brilliant heap and the front mass being sheathed on described pretension bar；
Described pretension bar includes that the outer peripheral face integrally connected is smooth head and the body of rod, and described head is cylindricality head, described
The diameter of head is more than the diameter of the described body of rod, and described head includes head contact surface；
Described rear mass has the first contact surface and the second contact surface being oppositely arranged, and described first contact surface is attached at described
Head contact surface；
Described brilliant heap has brilliant heap contact surface, and described brilliant heap contact surface is attached at described second contact surface；
Described front mass is connected to the end of the described body of rod, and described front mass is attached on described brilliant heap；
Described horn is connected on described front mass.
Ultrasonic transduction device the most according to claim 8, it is characterised in that the edge of described first contact surface is provided with down
Angle or rounding；And/or,
The edge of described first contact surface and the coincident of described head contact surface；And/or,
The area of described second contact surface is more than the area of described brilliant heap contact surface；And/or,
The internal diameter of described second contact surface is than the internal diameter little 0.2～0.5mm of described brilliant heap contact surface；And/or,
Described front mass has front joint face, and described front mass surface is attached on described brilliant heap；Described transducer also includes method
Orchid, described flange is based on the outer surface at described front joint face place, and described front mass also includes and described front joint face
The rear joint face of opposing setting, the input of described input lever is connected on described rear joint face, and the diameter of described input is little
Diameter in described rear joint face.
10. a ultrasonic transduction device, it is characterised in that include transducer and horn；
Described transducer includes pretension bar and the rear mass being sheathed on successively on described pretension bar, brilliant heap and front mass；
Described horn includes that input lever and take-off lever, described input lever include the axial opposing setting along described input lever
Input and connection end, described input is connected on described front mass；Described take-off lever is connected to described connection end, and institute
Stating the central axis of take-off lever in the central shaft of described input lever, described take-off lever has along self axial opposing setting
First outfan and the second outfan, described first outfan and described second outfan are all used for connecting ultrasound knife knife bar；
The end that connects of described input lever is connected to the center of described take-off lever, and described take-off lever includes respectively from described center
Position extends to first body of rod of described first outfan and extends to the of described second outfan from described center
Bipole body, described first body of rod and described second body of rod centered by described input lever in specular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620111623.0U CN205493950U (en) | 2016-02-03 | 2016-02-03 | Ultrasound energy transducing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620111623.0U CN205493950U (en) | 2016-02-03 | 2016-02-03 | Ultrasound energy transducing device |
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| CN205493950U true CN205493950U (en) | 2016-08-24 |
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| CN201620111623.0U Expired - Fee Related CN205493950U (en) | 2016-02-03 | 2016-02-03 | Ultrasound energy transducing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107028643A (en) * | 2016-02-03 | 2017-08-11 | 深圳迈瑞生物医疗电子股份有限公司 | A kind of ultrasonic transduction device |
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2016
- 2016-02-03 CN CN201620111623.0U patent/CN205493950U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107028643A (en) * | 2016-02-03 | 2017-08-11 | 深圳迈瑞生物医疗电子股份有限公司 | A kind of ultrasonic transduction device |
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