CN203657858U - Ultrasonic water meter transducer - Google Patents
Ultrasonic water meter transducer Download PDFInfo
- Publication number
- CN203657858U CN203657858U CN201320795402.6U CN201320795402U CN203657858U CN 203657858 U CN203657858 U CN 203657858U CN 201320795402 U CN201320795402 U CN 201320795402U CN 203657858 U CN203657858 U CN 203657858U
- Authority
- CN
- China
- Prior art keywords
- piezoelectric ceramic
- ceramic piece
- water meter
- ultrasonic water
- terminal block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 239000000919 ceramic Substances 0.000 claims abstract description 51
- 230000008878 coupling Effects 0.000 claims abstract description 18
- 238000010168 coupling process Methods 0.000 claims abstract description 18
- 238000005859 coupling reaction Methods 0.000 claims abstract description 18
- 238000010276 construction Methods 0.000 claims description 19
- 239000003292 glue Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 9
- 239000004020 conductor Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 abstract description 5
- 239000010410 layer Substances 0.000 abstract 2
- 239000012790 adhesive layer Substances 0.000 abstract 1
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Transducers For Ultrasonic Waves (AREA)
Abstract
The utility model discloses an ultrasonic water meter transducer. The ultrasonic water meter transducer comprises a shell. The shell is provided with an open end and a closed end. The open end is provided with a sealing structure, and a piezoelectric ceramic piece is arranged on the inner lateral side of the closed end through a coupling layer. A wire penetrating through the sealing structure is connected to the piezoelectric ceramic piece. A frame is arranged between the sealing structure and the closed end, and the piezoelectric ceramic piece is fixed to the frame. The distance between the lower lateral side of the piezoelectric ceramic piece and the bottom end of the frame equals the thickness of the coupling layer. Compared with the prior art, the parallelism between the piezoelectric ceramic piece and the inner lateral side of the closed end of the shell and the thickness of an adhesive layer between the piezoelectric ceramic piece and the inner lateral side of the closed end of the shell can be effectively controlled by controlling the fit dimension of the frame and the piezoelectric ceramic piece to keep good performance uniformity of the ultrasonic water meter transducer and bring convenience for matching.
Description
Technical field
The utility model belongs to water meter technical field, especially relates to a kind of Ultrasonic water meter transducer.
Background technology
Ultrasonic water meter transducer is a kind of ultrasonic transducer of transceiver, has the dual-use function that sends sound wave and receive sound wave simultaneously, and it in use needs to match, to ensure the stability of its receiving and transmitting signal, thus the stability of guarantee Ultrasonic water meter performance.
In prior art, the structure of Ultrasonic water meter transducer is such: comprise housing and hermetically-sealed construction, piezoelectric ceramic piece is arranged on the inside surface of housing, the middle glue bonding that adopts, and then encapsulating seals, and wire is connected with piezoelectric ceramic piece through encapsulating layer.As the application number Chinese utility model patent that is 201220736777.0, a kind of Ultrasonic water meter transducer is disclosed, comprise housing, described housing comprises openend and blind end, on described blind end, there is piezoelectric ceramic piece, it is characterized in that, on described openend, there is seal cover board, on described seal cover board, be inserted with two binding posts, on the external end head of two described binding posts, there is wire tie point, wire tie point joins by wire and shielded conductor, on described seal cover board, there is protection ring, described binding post is in described protection ring, in described protection ring, fill with and have glue, described glue at least covers described wire tie point.
This structure, cannot ensure that because piezoelectric ceramic piece and shell inner surface adopt glue bonding piezoelectric ceramic piece is parallel with shell inner surface, and if be also difficult to ensure without the consistance of unit clamp bondline thickness.Thus, size, direction that the parameter such as quality factor, resonance frequency of Ultrasonic water meter transducer changes are just uncontrollable, and its consistency of performance is bad, is difficult to carry out good pairing.
Summary of the invention
The utility model, for deficiency of the prior art, provides a kind of Ultrasonic water meter transducer simple in structure, can guarantee that piezoelectric ceramic piece is parallel with shell inner surface, and bondline thickness consistance is controlled.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals: a kind of Ultrasonic water meter transducer, comprise the housing with openend and blind end, described open end is provided with hermetically-sealed construction, on described blind end medial surface, be provided with piezoelectric ceramic piece by coupling layer, on described piezoelectric ceramic piece, be connected with the wire through described hermetically-sealed construction, it is characterized in that: between described hermetically-sealed construction and described blind end, be also provided with shelf, described piezoelectric ceramic piece is fixed on described shelf, the thickness that distance between the downside of described piezoelectric ceramic piece and the bottom of described shelf is described coupling layer.The utility model by control the fit dimension of shelf and piezoelectric ceramic piece can effectively control piezoelectric ceramic piece and housings close end medial surface the depth of parallelism and between bondline thickness.
More specifically scheme comprises: above-mentioned shelf comprises and be arranged at peripheral bracing frame and be fixed on the plate body in the middle of support frame as described above, and described plate body is parallel to described piezoelectric ceramic piece, and described piezoelectric ceramic piece is connected on described plate body.
In order to obtain better technique effect, further technical measures also comprise: above-mentioned plate body comprises the main body and the elastomeric pad that be arranged in parallel up and down, and described piezoelectric ceramic piece is connected on described elastomeric pad.The setting of elastomeric pad, its object is to guarantee that piezoelectric ceramic piece is parallel with shell inner surface, and improves bondline thickness consistance.
In order to prevent that unnecessary coupling layer material from overflowing, the lower end of above-mentioned shelf is provided with at least 1 for holding the breach of unnecessary coupling layer material.Because the placement of each coupling layer material can not ensure equally, if too much, unnecessary material can overflow, and install that pressure rack can be harder at present, even may cause shelf to be placed uneven, therefore, this programme arranges breach in the lower end of shelf.
As preferably, above-mentioned hermetically-sealed construction comprises the terminal block that is arranged at described shelf upper end, is arranged at the cover plate on described terminal block, and is covered in the glue layer on described cover plate.
Further improve, above-mentioned openend is provided with first step, and the upper side of described cover plate and the step surface of described first step flush.First step makes the sealing effectiveness of glue layer better.
As preferably, above-mentioned hermetically-sealed construction comprises the second step that is opened in openend, and the added terminal block that is provided with of described second step, is coated with glue layer on described terminal block.
Further improve, above-mentioned openend has at least a position to extend internally to cover the upper side of described terminal block.This structure is link plate better, guarantees the sealing effectiveness of glue layer.
The downside of above-mentioned terminal block is provided with two wiring points, and described wire comprises the shielded conductor that is connected to described terminal block upper side, and connects the lead-in wire of described piezoelectric ceramic piece and wiring point.
The beneficial effects of the utility model are: the utility model by control the fit dimension of shelf and piezoelectric ceramic piece just can effectively control piezoelectric ceramic piece and housings close end medial surface the depth of parallelism and between bondline thickness, make the high conformity of Ultrasonic water meter transducer performance, be convenient to pairing.
Brief description of the drawings
Fig. 1 is the cut-open view of the utility model embodiment 1.
Fig. 2 is the cut-open view of the utility model embodiment 2.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
Shown in Figure 1: a kind of Ultrasonic water meter transducer, comprise the housing 1 with openend 1a and blind end 1b, described openend 1a place is provided with hermetically-sealed construction, on described blind end 1b medial surface, be provided with piezoelectric ceramic piece 2 by coupling layer 3, on described piezoelectric ceramic piece 2, be connected with the wire through described hermetically-sealed construction, it is characterized in that: between described hermetically-sealed construction and described blind end 1b, be also provided with shelf 4, described piezoelectric ceramic piece 2 is fixed on described shelf 4, distance between the bottom of the downside of described piezoelectric ceramic piece 2 and described shelf 4 is the thickness of described coupling layer 3, the material of this coupling layer can be glue.
Wherein, above-mentioned shelf 4 comprises and is arranged at peripheral bracing frame 41 and is fixed on the plate body 42 in the middle of support frame as described above 41, described plate body 42 is parallel to described piezoelectric ceramic piece 2, described piezoelectric ceramic piece 2 is connected on described plate body 42, plate body 42 comprises the main body 421 and the elastomeric pad 422 that be arranged in parallel up and down, described piezoelectric ceramic piece 2 is connected on described elastomeric pad 422, and the lower end of bracing frame 41 is provided with at least 1 for holding the breach 41a of unnecessary coupling layer material.
Above-mentioned hermetically-sealed construction comprises the terminal block 5 that is arranged at described shelf 4 upper ends, be arranged at the cover plate 6 on described terminal block 5, and be covered in the glue layer 7 on described cover plate 6, openend 1a is provided with first step 8, interference fit inside cover plate 6 and openend 1a, thereby be fixed on openend 1a place, the step surface of the upper side of described cover plate 6 and described first step 8 flushes.The downside of terminal block 5 is provided with two wiring points, described wire comprises the shielded conductor that is connected to described terminal block 5 upper sides, and connect the lead-in wire 10 of described piezoelectric ceramic piece 2 and wiring point, lead-in wire 10 can be enameled wire, on enameled wire, be provided with heat-shrink tube, reduce the impact between positive and negative lead wires when contact.
Shown in Figure 2: a kind of Ultrasonic water meter transducer, comprise the housing 1 with openend 1a and blind end 1b, described openend 1a place is provided with hermetically-sealed construction, on described blind end 1b medial surface, be provided with piezoelectric ceramic piece 2 by coupling layer 3, on described piezoelectric ceramic piece 2, be connected with the wire through described hermetically-sealed construction, it is characterized in that: between described hermetically-sealed construction and described blind end 1b, be also provided with shelf 4, described piezoelectric ceramic piece 2 is fixed on described shelf 4, distance between the bottom of the downside of described piezoelectric ceramic piece 2 and described shelf 4 is the thickness of described coupling layer 3, the material of this coupling layer can be glue.
Wherein, above-mentioned shelf 4 comprises and is arranged at peripheral bracing frame 41 and is fixed on the plate body 42 in the middle of support frame as described above 41, described plate body 42 is parallel to described piezoelectric ceramic piece 2, described piezoelectric ceramic piece 2 is connected on described plate body 42, plate body 42 comprises the main body 421 and the elastomeric pad 422 that be arranged in parallel up and down, described piezoelectric ceramic piece 2 is connected on described elastomeric pad 422, and the lower end of bracing frame 41 is provided with at least 1 for holding the breach 41a of unnecessary coupling layer material.
Above-mentioned hermetically-sealed construction comprises the second step 9 that is opened in openend 1a, and the added terminal block 5 that is provided with of described second step 9, is coated with glue layer 7 on described terminal block 5, and openend 1a has at least a position to extend internally to cover the upper side of described terminal block 5.The downside of terminal block 5 is provided with two wiring points, described wire comprises the shielded conductor that is connected to described terminal block 5 upper sides, and connect the lead-in wire 10 of described piezoelectric ceramic piece 2 and wiring point, lead-in wire 10 can be enameled wire, on enameled wire, be provided with heat-shrink tube, reduce the impact between positive and negative lead wires when contact.
Claims (10)
1. a Ultrasonic water meter transducer, comprise the housing (1) of there is openend (1a) and blind end (1b), described openend (1a) locates to be provided with hermetically-sealed construction, on described blind end (1b) medial surface, be provided with piezoelectric ceramic piece (2) by coupling layer (3), described piezoelectric ceramic piece is connected with the wire through described hermetically-sealed construction on (2), it is characterized in that: between described hermetically-sealed construction and described blind end (1b), be also provided with shelf (4), described piezoelectric ceramic piece (2) is fixed on described shelf (4), distance between the bottom of the downside of described piezoelectric ceramic piece (2) and described shelf (4) is the thickness of described coupling layer (3).
2. a kind of Ultrasonic water meter transducer according to claim 1, it is characterized in that: described shelf (4) comprises and is arranged at peripheral bracing frame (41) and is fixed on the plate body (42) in the middle of support frame as described above (41), described plate body (42) is parallel to described piezoelectric ceramic piece (2), and described piezoelectric ceramic piece (2) is connected on described plate body (42).
3. a kind of Ultrasonic water meter transducer according to claim 2, it is characterized in that: described plate body (42) comprises the main body (421) and the elastomeric pad (422) that be arranged in parallel up and down, and described piezoelectric ceramic piece (2) is connected on described elastomeric pad (422).
4. according to a kind of Ultrasonic water meter transducer described in claim 1 or 2 or 3, it is characterized in that: the lower end of described shelf (4) is provided with at least 1 for holding the breach (41a) of unnecessary coupling layer material.
5. a kind of Ultrasonic water meter transducer according to claim 4, it is characterized in that: described hermetically-sealed construction comprises the terminal block (5) that is arranged at described shelf (4) upper end, be arranged at the cover plate (6) on described terminal block (5), and be covered in the glue layer (7) on described cover plate (6).
6. a kind of Ultrasonic water meter transducer according to claim 5, is characterized in that: described openend (1a) is provided with first step (8), the step surface of the upper side of described cover plate (6) and described first step (8) flushes.
7. a kind of Ultrasonic water meter transducer according to claim 4, it is characterized in that: described hermetically-sealed construction comprises the second step (9) that is opened in openend (1a), the added terminal block (5) that is provided with of described second step (9), is coated with glue layer (7) on described terminal block (5).
8. a kind of Ultrasonic water meter transducer according to claim 7, is characterized in that: described openend (1a) has at least a position to extend internally to cover the upper side of described terminal block (5).
9. a kind of Ultrasonic water meter transducer according to claim 6, it is characterized in that: the downside of described terminal block (5) is provided with two wiring points, described wire comprises the shielded conductor that is connected to described terminal block (5) upper side, and connects the lead-in wire (10) of described piezoelectric ceramic piece (2) and wiring point.
10. a kind of Ultrasonic water meter transducer according to claim 8, it is characterized in that: the downside of described terminal block (5) is provided with two wiring points, described wire comprises the shielded conductor that is connected to described terminal block (5) upper side, and connects the lead-in wire (10) of described piezoelectric ceramic piece (2) and wiring point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320795402.6U CN203657858U (en) | 2013-12-06 | 2013-12-06 | Ultrasonic water meter transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320795402.6U CN203657858U (en) | 2013-12-06 | 2013-12-06 | Ultrasonic water meter transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203657858U true CN203657858U (en) | 2014-06-18 |
Family
ID=50924235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320795402.6U Expired - Lifetime CN203657858U (en) | 2013-12-06 | 2013-12-06 | Ultrasonic water meter transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203657858U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108435521A (en) * | 2018-03-12 | 2018-08-24 | 肇庆奥迪威传感科技有限公司 | A kind of ultrasonic sensor |
-
2013
- 2013-12-06 CN CN201320795402.6U patent/CN203657858U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108435521A (en) * | 2018-03-12 | 2018-08-24 | 肇庆奥迪威传感科技有限公司 | A kind of ultrasonic sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Hongxing Road Jiangbei District 315032 Zhejiang city of Ningbo province No. 355 Patentee after: Ningbo water meter (Group) Co.,Ltd. Address before: Hongxing Road Jiangbei District 315032 Zhejiang city of Ningbo province No. 355 Patentee before: NINGBO WATER METER Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140618 |
|
| CX01 | Expiry of patent term |