CN206413164U - A kind of one side directional transducer - Google Patents
A kind of one side directional transducer Download PDFInfo
- Publication number
- CN206413164U CN206413164U CN201621462540.2U CN201621462540U CN206413164U CN 206413164 U CN206413164 U CN 206413164U CN 201621462540 U CN201621462540 U CN 201621462540U CN 206413164 U CN206413164 U CN 206413164U
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- China
- Prior art keywords
- metal shell
- baffle
- structure part
- side directional
- directional transducer
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Abstract
A kind of one side directional transducer, including the vibrational structure part in metal shell, metal shell front opening, the back-end sealing of metal shell, the acoustic energy that vibrational structure part is produced outwards are propagated through metal shell front end；The outer ring of metal shell adds baffle, and baffle is close to the front end of metal shell, and baffle is used for the backward radiation for the acoustic energy diffraction formation for absorbing the generation of vibrational structure part.
Description
Technical field
The utility model is related to underwater sound communication, Underwater Detection technical field, and in particular to transducer.
Background technology
In fields such as underwater sound communication, Underwater Detections, the one side directive property to transducer requires higher.
There is diffraction phenomena during transducer front shroud radiating surface radiated sound field, a big chunk energy radiated afterwards comes from
Front shroud radiates the backward diffraction of acoustic energy, constitutes one of piston type transducer backward radiation Producing reason.Wherein, piston type
Transducer, a kind of piston type transducer as disclosed in the utility model patent of Application No. 200510107825.4.
At present, in order to realize the unidirectional directive property of transducer, generally using the pressure-resistant reverse sound material of low-density as baffle, install
At the rear of transducer, to block the backward acoustic radiation of transducer.This mode is larger to baffle scale requirement, and Split type structure increases
The difficulty at sea laying recovery is added, globality is poor.Although Antisoundbaffle can play certain rear radiation occlusion effect,
But influence of the Antisoundbaffle to main beam is also larger.The interface of inherently one secondary reflection of Antisoundbaffle, is underwater sound signal
Processing brings adverse effect.
Preferably unidirectional directional transducer can avoid influence of the interface secondary reflection to acoustical signal of going directly, and reduce signal
The complexity of processing.
Utility model content
The technical problem that the utility model is solved：How the backward radiation of transducer diffraction formation is effectively reduced.
In order to solve the above technical problems, the utility model provides following technical scheme：A kind of one side directional transducer, bag
Include the vibrational structure part in metal shell, metal shell front opening, the back-end sealing of metal shell, vibrational structure
The acoustic energy that part is produced outwards is propagated through metal shell front end；The outer ring of metal shell adds baffle, and baffle is close to outside metal
The front end of shell, baffle is used for the backward radiation for the acoustic energy diffraction formation for absorbing the generation of vibrational structure part.
In above-mentioned technical proposal, vibrational structure part constitutes the vibration sounding source of transducer, the acoustic energy in vibration sounding source
Outwards propagated through metal shell front opening, the acoustic energy outwards propagated is tapered, therefore transducer again may be used involved by the utility model
Referred to as big angle of release one side directional transducer.
The vibrational structure part includes front shroud, ceramic stack, the back shroud fitted together successively by succession.Institute
Front shroud is stated against metal shell front opening, the acoustic energy produced by vibrational structure part is after front shroud i.e. to transducer
Above one way propagation.The preferred piezoelectric ceramic stack of ceramic stack.
The baffle is rubber baffle.
The baffle is made by sound-absorbing material.
The baffle is in hollow round table-like, and hollow space is used to be set in metal shell.
The front end of metal shell is provided with the gap of watertight rubber, watertight rubber seal front shroud and metal shell, wherein, water
It is close, in brief, waterproof, water proof, make water can not by or flow through.
The rear end of metal shell is provided with the electric connector being connected with vibrational structure part, and the electric connector is electrically connected for watertight
Connect device.
By technical solutions of the utility model, one is added in front shroud surrounding metal shell outer ring has sound absorption characteristic
Rubber baffle, can effectively reduce diffraction formation backward radiation.The backward radiation of transducer is obviously reduced, and solves the underwater sound
Secondary reflection in communication and Underwater Detection involves many way problems, greatly improves the performance of underwater sound equipment.
Brief description of the drawings
The utility model is described further below in conjunction with the accompanying drawings：
Fig. 1 is a kind of structural representation of one side directional transducer of the utility model.
Symbol description in figure：
10th, metal shell；
20th, vibrational structure part；21st, front shroud；22nd, ceramic stack；23rd, back shroud；
40th, electric connector；
50th, watertight rubber；
60th, baffle.
Embodiment
Such as Fig. 1, a kind of one side directional transducer, including the vibrational structure part 20 in metal shell 10, gold
Belong to case nose opening, the back-end sealing of metal shell, the acoustic energy that vibrational structure part is produced is outside through metal shell front end
Propagate.
The vibrational structure part 20 include fitted together successively by succession front shroud 21, ceramic stack 22, after
Cover plate 23.
The front end of metal shell 10 is provided with watertight rubber 50, watertight rubber seal metal shell front opening and front shroud 21
Gap.
The outer ring of metal shell adds baffle 60, and baffle is close to the front end of metal shell, and baffle is used to absorb vibrational structure
The backward radiation for the acoustic energy diffraction formation that part is produced.
The baffle 60 in hollow round table-like, baffle 60 be with sound absorption can rubber baffle.Baffle can be by such as
Under type is arranged on metal shell 10：First, the hollow space of baffle opens up internal thread, and metal shell opens up external screw thread, barrier
Plate is screwed onto on metal shell, afterwards, and be spirally connected a clamp nut again on metal shell, props up the end face of baffle, prevents baffle
Loosen；Second, set on the madial wall of the hollow space of baffle and open up groove on convex portion, the lateral wall of metal shell, groove is in gold
The track belonged on outer side wall is L-shaped, and the L-shaped groove in track includes axial notch and radial groove；Baffle is outside metal
The front end of shell starts to be arranged, and convex portion coordinates with axial notch, afterwards, axial movement of the baffle along metal shell, and convex portion is in axial direction
Slided in groove, terminate in the corner of axial notch and radial groove, afterwards, rotate baffle, convex portion is caught in radial groove, it
Afterwards, be spirally connected clamp nut on metal shell, props up the end face of baffle, prevents baffle from loosening.
The rear end of metal shell 10 is provided with the water-tight electrical connector 40 being connected with vibrational structure part 20.
Above content is only better embodiment of the present utility model, for one of ordinary skill in the art, according to this
The thought of utility model, will change in specific embodiments and applications, and this specification content should not be understood
For to limitation of the present utility model.
Claims (6)
1. outside a kind of one side directional transducer, including the vibrational structure part (20) in metal shell (10), metal
Shell front opening, the back-end sealing of metal shell, the acoustic energy that vibrational structure part is produced outwards is propagated through metal shell front end；
It is characterized in that：The outer ring of metal shell adds baffle (60), and baffle is close to the front end of metal shell, and baffle, which is used to absorb, to be vibrated
The backward radiation for the acoustic energy diffraction formation that structure member is produced；
The baffle (60) is in hollow round table-like；
Set on the madial wall of the hollow space of baffle and open up groove on convex portion, the lateral wall of metal shell, groove is in metal shell
Track on lateral wall is L-shaped, and the L-shaped groove in track includes axial notch and radial groove；Baffle is before metal shell
End starts to be arranged, and convex portion coordinates with axial notch, afterwards, axial movement of the baffle along metal shell, and convex portion is in axial notch
Slide, terminate in the corner of axial notch and radial groove, afterwards, rotate baffle, convex portion is caught in radial groove, afterwards,
Be spirally connected clamp nut on metal shell, props up the end face of baffle, prevents baffle from loosening.
2. a kind of one side directional transducer as claimed in claim 1, it is characterised in that：Vibrational structure part (20) bag
Include the front shroud (21) fitted together successively by succession, ceramic stack (22), back shroud (23).
3. a kind of one side directional transducer as claimed in claim 1, it is characterised in that：The baffle (60) hinders for rubber
Plate.
4. a kind of one side directional transducer as claimed in claim 1, it is characterised in that：The baffle (60) is by sound-absorbing material
It is made.
5. a kind of one side directional transducer as claimed in claim 1, it is characterised in that：The front end of metal shell (10) is provided with
Watertight rubber (50).
6. a kind of one side directional transducer as claimed in claim 1, it is characterised in that：The rear end of metal shell (10) is provided with
The electric connector being connected with vibrational structure part (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621462540.2U CN206413164U (en) | 2016-12-29 | 2016-12-29 | A kind of one side directional transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621462540.2U CN206413164U (en) | 2016-12-29 | 2016-12-29 | A kind of one side directional transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206413164U true CN206413164U (en) | 2017-08-15 |
Family
ID=59552675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621462540.2U Active CN206413164U (en) | 2016-12-29 | 2016-12-29 | A kind of one side directional transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206413164U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109433569A (en) * | 2018-10-19 | 2019-03-08 | 海鹰企业集团有限责任公司 | A method of optimization transducer directivity |
| CN112153543A (en) * | 2020-09-07 | 2020-12-29 | 上海船舶电子设备研究所(中国船舶重工集团公司第七二六研究所) | Half-space radiation high-frequency broadband transducer |
-
2016
- 2016-12-29 CN CN201621462540.2U patent/CN206413164U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109433569A (en) * | 2018-10-19 | 2019-03-08 | 海鹰企业集团有限责任公司 | A method of optimization transducer directivity |
| CN112153543A (en) * | 2020-09-07 | 2020-12-29 | 上海船舶电子设备研究所(中国船舶重工集团公司第七二六研究所) | Half-space radiation high-frequency broadband transducer |
| CN112153543B (en) * | 2020-09-07 | 2022-03-18 | 上海船舶电子设备研究所(中国船舶重工集团公司第七二六研究所) | Half-space radiation high-frequency broadband transducer |
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