CN208976199U - A kind of novel back shroud for sandwich piezoelectric ultrasonic transducer - Google Patents
A kind of novel back shroud for sandwich piezoelectric ultrasonic transducer Download PDFInfo
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- CN208976199U CN208976199U CN201821689744.9U CN201821689744U CN208976199U CN 208976199 U CN208976199 U CN 208976199U CN 201821689744 U CN201821689744 U CN 201821689744U CN 208976199 U CN208976199 U CN 208976199U
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- ultrasonic transducer
- back shroud
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- piezoelectric ultrasonic
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Abstract
The utility model provides a kind of novel back shroud for sandwich piezoelectric ultrasonic transducer, and back shroud is made of the different cylindrical body coaxial arrangement of two diameters；Two cylindrical bodies have bolt hole, and the cylindrical body of small diameter is contacted with pre-stressed bolt, and larger-diameter cylindrical body is contacted with piezoelectric patches；The utility model designs stepped hole on the contact surface of small-diameter circular cylinder and large diameter cylinder, so that the prestressing force for applying pre-stressed bolt is uniformly distributed on piezoelectric patches；Equally distributed prestressing force helps to increase the service life of sandwich piezoelectric ultrasonic transducer, and helps to improve the electromechanical conversion efficiency of PZT (piezoelectric transducer).
Description
Technical field
It is that a kind of can improve is changed the utility model relates to a kind of novel back shroud for sandwich piezoelectric ultrasonic transducer
The back shroud of energy device piezoelectric patches service life, suitable for applying the sandwich piezoelectric ultrasonic transducer in every field.
Background technique
Ultrasonic vibration system be it is a kind of by supersonic generator output high frequency electrical signal be converted into mechanical vibrational energy
System；In ultrasonic system, piezoelectric ultrasonic transducer is a crucial component；Piezoelectric ultrasonic transducer is to utilize piezoelectric patches
Inverse piezoelectric activity generate ultrasonic vibration, and the device for exporting ultrasonic vibrational energy is faced out by the radiation of metal cover board；Its
Middle sandwich piezoelectric ultrasonic transducer is a kind of typical structure.
For sandwich piezoelectric ultrasonic transducer, when material determines, the prestressing force of overall structure and piezoelectric patches is to influence
Transducer reliability, service life, the key factor of electromechanical conversion efficiency.Retrieve current piezoelectric ultrasonic transducer patent hair
Existing, application No. is a kind of novel biplate sandwich piezoelectric transducers disclosed in 201520073278.1, its main feature is that using two
Chip, back shroud setting cylindrical, is made of copper or stainless steel, reduces calorific value, improves delivery efficiency；But it does not examine
Consider influence of the back shroud to piezoelectric patches prestress distribution.Application No. is before a kind of PZT (piezoelectric transducer) disclosed in 201610489676.0
Back shroud, its main feature is that the Mass Distribution of design front and rear cover plate, improves the electromechanical conversion efficiency of energy converter；But it does not consider
The influence of covering plate structure and Mass Distribution to prestress distribution suffered by energy converter piezoelectric patches.Therefore, after rationally designing energy converter
Covering plate structure is uniformly distributed prestressing force, become improve transducer reliability, service life, electromechanical conversion efficiency it is a kind of heavy
Want means.
Summary of the invention
The utility model is directed to current technical problem, and it is an object of the present invention to provide a kind of be used for sandwich piezoelectric ultrasonic transducer
Novel rear end cap, rationally design rear end cover structure, so that pre-stressed bolt is applied to the prestressing force on piezoelectric patches by back shroud
It is uniformly distributed as far as possible, to improve the reliability and electromechanical conversion efficiency of energy converter.
To solve above-mentioned technical problem, the utility model proposes following specific technical solutions:
A kind of novel back shroud for sandwich piezoelectric ultrasonic transducer, whole to be arranged in cylindrical body, back shroud one end
It is contacted with the metal electrode film of sandwich piezoelectric ultrasonic transducer, the other end is contacted with pre-stressed bolt.
It is further improved as the utility model, a kind of novel rear cover for sandwich piezoelectric ultrasonic transducer
Plate is made of, stepped, large-diameter circular styletable and energy converter piezoelectric patches the different cylindrical body coaxial arrangement of two diameters
Contact.
It is further improved as the utility model, a kind of novel rear cover for sandwich piezoelectric ultrasonic transducer
Counterbore is arranged on section of the small-diameter circular cylinder close to large diameter cylinder in plate.
It is further improved as the utility model, a kind of novel rear cover for sandwich piezoelectric ultrasonic transducer
Plate, two different cylindrical bodies of diameter are provided with the through-hole that front shroud is fastenedly connected for pre-stressed bolt, through-hole diameter with
Pre-stressed bolt difference in diameter is 0.4mm to 0.8mm.
According to above technical solution, can obtain it is following the utility model has the advantages that
The counterbore of small-diameter circular cylinder end face, be effectively improved pre-stressed bolt be applied to by back shroud it is pre- on piezoelectric patches
The non-uniform phenomenon of stress distribution increases the service life of piezoelectric patches, and improves the reliability and electromechanical transformation effect of energy converter
Rate.
The cylindrical body that back shroud is coaxially disposed by two is constituted, and small-diameter circular cylinder easy to process is contacted with cylinder with large diameter
End face on counterbore, reduce energy converter back shroud manufacturing cost.
Two cylinder diameter differences for constituting back shroud, effectively increase the radiating surface of sandwich piezoelectric ultrasonic transducer
Product, improves the heat generation characteristic of energy converter.
Detailed description of the invention
Fig. 1 is a kind of sandwich piezoelectric ultrasonic transducer decomposition view using novel back shroud
Fig. 2 is a kind of sandwich piezoelectric ultrasonic transducer cross-sectional view using novel back shroud
Fig. 3 is a kind of novel back shroud cross-sectional view for sandwich piezoelectric ultrasonic transducer
Each title is as follows in figure: 1, pre-stressed bolt；2-1, small-diameter circular cylinder；2-2, large diameter cylinder；3, metal
Electrode slice；4, insulating sleeve；5, piezoelectric patches；6, front shroud.
Specific embodiment
Attached drawing discloses the involved structural schematic diagram that case is preferably implemented of the utility model without limitation；It below will knot
It closes attached drawing and explains the technical solution of the utility model in detail.
It is as shown in Figure 1 and Figure 2: a kind of sandwich piezoelectric ultrasonic transducer using novel back shroud, including pre-stressed bolt
1, small-diameter circular cylinder 2-1, large diameter cylinder 2-2, metal electrode film 3, insulating sleeve 4, piezoelectric patches 5, front shroud 6；It answers in advance
Power bolt 1 is by small-diameter circular cylinder 2-1, large diameter cylinder 2-2, metal electrode film 3, insulating sleeve 4, piezoelectric patches 5, front shroud
6 are fastenedly connected, and apply prestressing force to piezoelectric patches 5 by small-diameter circular cylinder 2-1, large diameter cylinder 2-2.
The utility model is the service life for increasing piezoelectric patches and the electromechanics turn for improving sandwich piezoelectric ultrasonic transducer
Efficiency is changed, is started with from the specific structure of design back shroud；Generally, it rationally designs rear cover plate structure and reaches prestressing force in piezoelectricity
The equally distributed purpose of on piece；A kind of novel back shroud for sandwich piezoelectric ultrasonic transducer described in the utility model has
Such as flowering structure: back shroud is integrally in cylindrical structure, is divided into two parts composition；As shown in Figure 3: it is respectively small-diameter circular cylinder 2-1,
Large diameter cylinder 2-2；Wherein small-diameter circular cylinder 2-1 has the inner hole passed through for pre-stressed bolt 1, small-diameter circular cylinder 2-
1 diameter of bore and the difference in diameter of pre-stressed bolt 1 are 0.4mm to 0.8mm, and the end face contacted with large diameter cylinder is provided with
Counterbore, counterbore depth are 1mm to 3mm；Cylinder with large diameter 2-2 has the inner hole passed through for pre-stressed bolt 1, large diameter cylinder
The diameter of bore of 2-2 and the difference in diameter of pre-stressed bolt 1 are 0.4mm to 0.8mm, large diameter cylinder 2-2 and small-diameter circular
The outer diameter difference of cylinder 2-1 is 10mm to 15mm.
It is described in the utility model a kind of for sandwich piezoelectric ultrasonic transducer in addition, applicant also needs statement
Novel back shroud can be applied to all sandwich piezoelectric ultrasonic transducers；Above in conjunction with specific preferred embodiment described in attached drawing
It is only used for describing and explaining the present invention, is not intended to limit the utility model, all technologies according to the utility model are real
Any simple modification, equivalent change and modification that matter is done, should be included within the scope of protection of this utility model.
Claims (3)
1. a kind of novel back shroud for sandwich piezoelectric ultrasonic transducer, whole to be arranged in cylinder, it is characterised in that: by two
The different cylindrical body of a diameter, which is coaxially disposed, to be constituted, large diameter cylinder (2-2) other end and sandwich ultrasonic transducer
Metal electrode film (3) contact, small-diameter circular cylinder (2-1) other end contacts with pre-stressed bolt (1).
2. a kind of novel back shroud for sandwich piezoelectric ultrasonic transducer according to claim 1, it is characterised in that:
Counterbore is arranged on the section of large diameter cylinder (2-2) in small-diameter circular cylinder (2-1).
3. a kind of novel back shroud for sandwich piezoelectric ultrasonic transducer according to claim 1, it is characterised in that: two
The different cylindrical body of a diameter is provided with the inner hole for pre-stressed bolt (1) connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821689744.9U CN208976199U (en) | 2018-10-18 | 2018-10-18 | A kind of novel back shroud for sandwich piezoelectric ultrasonic transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821689744.9U CN208976199U (en) | 2018-10-18 | 2018-10-18 | A kind of novel back shroud for sandwich piezoelectric ultrasonic transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208976199U true CN208976199U (en) | 2019-06-14 |
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ID=66788064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821689744.9U Active CN208976199U (en) | 2018-10-18 | 2018-10-18 | A kind of novel back shroud for sandwich piezoelectric ultrasonic transducer |
Country Status (1)
| Country | Link |
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| CN (1) | CN208976199U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109261476A (en) * | 2018-10-18 | 2019-01-25 | 四川大学 | A kind of novel back shroud for sandwich piezoelectric ultrasonic transducer |
-
2018
- 2018-10-18 CN CN201821689744.9U patent/CN208976199U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109261476A (en) * | 2018-10-18 | 2019-01-25 | 四川大学 | A kind of novel back shroud for sandwich piezoelectric ultrasonic transducer |
| CN109261476B (en) * | 2018-10-18 | 2023-10-27 | 四川大学 | Novel back cover plate for sandwich piezoelectric ultrasonic transducer |
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