CN113399237A - Ultrasonic transducer and assembly method - Google Patents
Ultrasonic transducer and assembly method Download PDFInfo
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- CN113399237A CN113399237A CN202110599437.1A CN202110599437A CN113399237A CN 113399237 A CN113399237 A CN 113399237A CN 202110599437 A CN202110599437 A CN 202110599437A CN 113399237 A CN113399237 A CN 113399237A
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000009434 installation Methods 0.000 claims abstract description 87
- 238000013016 damping Methods 0.000 claims abstract description 44
- 230000026683 transduction Effects 0.000 claims abstract description 40
- 238000010361 transduction Methods 0.000 claims abstract description 40
- 230000002463 transducing effect Effects 0.000 claims abstract description 19
- 238000010030 laminating Methods 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 29
- 238000004382 potting Methods 0.000 claims description 22
- 238000005538 encapsulation Methods 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 description 8
- 230000006978 adaptation Effects 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B3/00—Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
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Abstract
The invention relates to an ultrasonic transducer and an assembly method. The ultrasonic transducer device includes: first installation casing, second installation casing, damping piece, matching layer and piezoelectricity transducing piece, be equipped with the fixed part on the first installation casing, the matching layer is installed on the second installation casing, piezoelectricity transducing piece passes through the fixed part with the fixed cooperation of first installation casing, be equipped with exhaust passage and embedment passageway on the first installation casing, exhaust passage with the embedment passageway all extends to piezoelectricity transducing piece deviates from the one side on matching layer, the damping piece process embedment passageway direction piezoelectricity transducing piece works as first installation casing with when second installation casing installation assembly, piezoelectricity transducing piece with matching layer laminating is contradicted. The ultrasonic transduction device does not need to carry out exhaust treatment by means of an external pressurizing tool, so that the concentricity of the piezoelectric transduction piece, the damping piece and the matching layer is ensured.
Description
Technical Field
The invention relates to the technical field of ultrasonic transducers, in particular to an ultrasonic transducer device and an assembly method.
Background
The ultrasonic transducer can be used for measuring the liquid flow or the liquid concentration. The design structure of the traditional ultrasonic transducer needs to meet the requirement that the front part of the piezoelectric transduction piece is provided with the matching layer and the back lining of the piezoelectric transduction piece is provided with the damping layer, and meanwhile, the requirement that no air exists between the piezoelectric transduction piece and the damping layer and between the piezoelectric transduction piece and the matching layer is ensured. At present, the ultrasonic transducer needs to be processed by an external pressurizing tool to remove air, but the processing mode influences the concentricity of the piezoelectric transduction piece, the matching layer and the damping layer, so that the use effect of the ultrasonic transducer is influenced.
Disclosure of Invention
Accordingly, it is necessary to provide an ultrasonic transducer apparatus and an assembling method thereof for solving the problem that the concentricity among the piezoelectric transducer sheet, the matching layer and the damping layer is affected.
An ultrasonic transducer is provided. The ultrasonic transducer device includes: first installation casing, second installation casing, damping piece, matching layer and piezoelectricity transducing piece, be equipped with the fixed part on the first installation casing, the matching layer is installed on the second installation casing, piezoelectricity transducing piece passes through the fixed part with the fixed cooperation of first installation casing, be equipped with exhaust passage and embedment passageway on the first installation casing, exhaust passage with the embedment passageway all extends to piezoelectricity transducing piece deviates from the one side on matching layer, the damping piece process embedment passageway direction piezoelectricity transducing piece works as first installation casing with when second installation casing installation assembly, piezoelectricity transducing piece with matching layer laminating is contradicted.
The assembly method of an ultrasonic transducer device adopts the ultrasonic transducer device and further comprises the following steps: installing the matching layer in the first installation shell, and arranging more than two exhaust channels on the second installation shell; fixedly mounting the piezoelectric transduction piece on the second mounting shell, and ensuring that more than two exhaust channels can extend to the surface of the piezoelectric transduction piece, which is far away from the matching layer; guiding the damping piece to the piezoelectric transduction piece through the encapsulation channel; will first installation casing with the installation cooperation of second installation casing, and guarantee piezoelectric transducer piece with the matching layer can laminate and contradict.
In one embodiment, the first mounting shell comprises a first mounting upper shell, an alignment block and a first fixing sleeve, the second mounting shell comprises a first mounting lower shell and a second fixing sleeve, the alignment block is attached to the first mounting upper shell, the first fixed sleeve is arranged on the alignment block, the exhaust channel and the encapsulation channel both extend from the first mounting upper shell to the first fixed sleeve through the alignment block, the piezoelectric energy conversion piece is arranged on the first fixing sleeve through the fixing part, the first mounting lower shell is provided with an alignment cavity which is matched with the alignment block in a sleeved mode, the second fixing sleeve is arranged on the first mounting lower shell, and the second fixed sleeve is communicated with the alignment cavity, the matching layer is arranged in the second fixed sleeve, and the first fixed sleeve and the second fixed sleeve are sleeved and matched.
In one embodiment, more than two adapting grooves are formed in the side portion of the first fixing sleeve at intervals along the circumferential direction of the first fixing sleeve, the opening ends of the adapting grooves face the piezoelectric transducer piece, and the potting channel is communicated with the adapting grooves.
In one embodiment, the fixing portion includes a plurality of fixing ribs, and a plurality of fixing ribs are installed at the end portion of the first fixing sleeve along the circumferential interval of the first fixing sleeve, and a plurality of fixing ribs are used for abutting against and fixing the piezoelectric transducer.
In one embodiment, the exhaust channel includes an exhaust hole, the filling and sealing channel includes a first filling and sealing hole and a second filling and sealing hole, the two or more fitting grooves include a first fitting groove and a second fitting groove, the first fitting groove and the second fitting groove are spaced apart from each other along a circumferential direction of the first fixing sleeve and are formed in a side portion of the first fixing sleeve, the first filling and sealing hole passes through the alignment block from the first mounting upper shell and extends to the first fitting groove, the second filling and sealing hole passes through the alignment block from the first mounting upper shell and extends to the second fitting groove, and the exhaust hole passes through the alignment block from the first mounting upper shell and extends to an inside of the first fixing sleeve.
In one embodiment, the exhaust hole is positioned between the first filling hole and the second filling hole on the first mounting upper shell.
In one embodiment, the ultrasonic transducer device further comprises a signal wire, one end of the signal wire is inserted into the first fixing sleeve through the exhaust hole, the other end of the signal wire is positioned outside the first mounting shell, and one end of the signal wire inserted into the first fixing sleeve is electrically connected with the piezoelectric transducer piece through a connecting wire; or the signal wire is inserted into one end of the first fixed sleeve and is directly electrically connected with the piezoelectric transducer.
In one embodiment, the sealing ring is sleeved outside the alignment block, a sealing groove opposite to the sealing ring is additionally arranged on the first mounting lower shell, when the first mounting upper shell is mounted and assembled with the first mounting lower shell, the sealing ring is additionally arranged on the first mounting upper shell, and the sealing ring is in sealing fit with the sealing groove.
In one embodiment, the first mounting housing includes a second mounting upper shell and a third fixing sleeve, the second mounting housing includes a second mounting lower shell and a fourth fixing sleeve, the third fixing sleeve is mounted on the second mounting upper shell, the exhaust channel and the encapsulation channel extend from the second mounting upper shell to the third fixing sleeve, the piezoelectric transducer piece passes through the fixing part and is mounted on the third fixing sleeve, the fourth fixing sleeve is mounted on the second mounting lower shell, the matching layer is mounted inside the fourth fixing sleeve, and the third fixing sleeve and the fourth fixing sleeve are sleeved and matched.
When the ultrasonic energy conversion device is used, the internal installation space of the first installation shell and the second installation shell is determined according to the size and the shape of the piezoelectric energy conversion piece, namely, after the first installation shell and the second installation shell are installed and matched, the piezoelectric energy conversion piece can be effectively installed in the first installation shell and the second installation shell. Further, when assembling ultrasonic wave transducer, fixed cooperation can be realized through fixed part and first installation casing to the piezoelectricity transducing piece, then sets up exhaust passage and embedment passageway on first installation casing according to the mounted position of piezoelectricity transducing piece on first installation casing, guarantees promptly that exhaust passage and embedment passageway all extend to the one side that piezoelectricity transducing piece deviates from the matching layer. The damping piece is filled into the piezoelectric transduction piece through the filling and sealing channel until the damping piece is attached to the surface of the piezoelectric transduction piece, and in the process, air between the damping piece and the piezoelectric transduction piece can be directly discharged through the exhaust channel, so that the air is prevented from being retained between the damping piece and the piezoelectric transduction piece. The first installation shell and the second installation shell are installed in a contraposition mode, and the concentricity of the damping piece and the piezoelectric transduction piece can be effectively guaranteed under the fixation of the fixing portion of the piezoelectric transduction piece. Simultaneously, the laminating of piezoelectric transduction piece and matching layer is contradicted and can effectively discharge the air between piezoelectric transduction piece and the matching layer. Therefore, the ultrasonic transduction device does not need to be subjected to exhaust treatment by means of an external pressurizing tool, and concentricity of the piezoelectric transduction piece, the damping piece and the matching layer is guaranteed.
When the ultrasonic energy conversion device is assembled, air between the damping piece and the piezoelectric energy conversion piece can be directly discharged through the exhaust channel, and the air is prevented from being retained between the damping piece and the piezoelectric energy conversion piece. Carry out counterpoint installation with first installation casing and second installation casing, the laminating of piezoelectric transduction piece and matching layer is contradicted and can effectively discharge the air between piezoelectric transduction piece and the matching layer. Therefore, the ultrasonic transducer device does not need to be subjected to exhaust treatment by means of an external pressurizing tool during assembly, and concentricity of the piezoelectric transducer piece, the damping piece and the matching layer is guaranteed.
Drawings
FIG. 1 is an exploded view of an ultrasonic transducer assembly;
FIG. 2 is a schematic view of the internal structure of the ultrasonic transducer apparatus;
FIG. 3 is a schematic view of the internal structure of the first mounting housing;
fig. 4 is a flowchart of an assembly method of the ultrasonic transducer apparatus.
100. The first installation shell, 110, a fixing part, 111, a fixing rib, 120, an exhaust channel, 121, an exhaust hole, 130, an encapsulation channel, 131, a first encapsulation hole, 132, a second encapsulation hole, 140, a first installation upper shell, 150, a first fixing sleeve, 151, a first adaptation groove, 152, a second adaptation groove, 160, an alignment block, 200, a second installation shell, 210, a first installation lower shell, 220, a second fixing sleeve, 300, a damping piece, 400, a matching layer, 500, a piezoelectric transducer, 600, a signal line, 700 and a connecting wire.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
Referring to fig. 1 and 2, in one embodiment, the ultrasonic transducer device includes: first installation casing 100, second installation casing 200, damping piece 300, matching layer 400 and piezoelectric transducer piece 500, be equipped with fixed part 110 on the first installation casing 100, matching layer 400 is installed on the second installation casing 200, piezoelectric transducer piece 500 passes through fixed part 110 with first installation casing 100 fixed coordination, be equipped with exhaust passage 120 and embedment passageway 130 on the first installation casing 100, exhaust passage 120 with embedment passageway 130 all extends to piezoelectric transducer piece 500 deviates from the one side of matching layer 400, damping piece 300 passes through embedment passageway 130 leads piezoelectric transducer piece 500 works as first installation casing 100 with when second installation casing 200 installation was assembled, piezoelectric transducer piece 500 with matching layer 400 laminating is contradicted.
When the ultrasonic transducer device is used, firstly, the internal installation space of the first installation shell 100 and the second installation shell 200 is determined according to the size and the shape of the piezoelectric transducer piece 500, namely, after the first installation shell 100 and the second installation shell 200 are installed and matched, the piezoelectric transducer piece 500 can be effectively installed in the first installation shell 100 and the second installation shell 200. Further, when assembling the ultrasonic transducer device, the piezoelectric transducer piece 500 can be fixedly matched with the first mounting case 100 through the fixing portion 110, and then the exhaust channel 120 and the potting channel 130 are opened on the first mounting case 100 according to the mounting position of the piezoelectric transducer piece 500 on the first mounting case 100, that is, it is ensured that the exhaust channel 120 and the potting channel 130 both extend to the surface of the piezoelectric transducer piece 500 departing from the matching layer 400. The damping member 300 is filled into the piezoelectric transduction piece 500 through the filling and sealing channel 130 until the damping member 300 is attached to the surface of the piezoelectric transduction piece 500, and in the process, air between the damping member 300 and the piezoelectric transduction piece 500 can be directly exhausted through the exhaust channel 120, that is, the air is prevented from being retained between the damping member 300 and the piezoelectric transduction piece 500. The first mounting case 100 and the second mounting case 200 are mounted in alignment, and the concentricity of the damping member 300 and the piezoelectric transducer 500 can be effectively ensured by fixing the piezoelectric transducer 500 to the fixing portion 110. Meanwhile, the piezoelectric transduction piece 500 is abutted to the matching layer 400 in a fitting manner, so that air between the piezoelectric transduction piece 500 and the matching layer 400 can be effectively discharged. Therefore, the ultrasonic transducer device does not need to be subjected to exhaust treatment by means of an external pressurizing tool, so that the concentricity of the piezoelectric transducer piece 500, the damping piece 300 and the matching layer 400 is ensured.
Referring to fig. 1, in an embodiment, the first mounting housing 100 includes a first mounting upper shell 140, a first fixing sleeve 150 and an aligning block 160, the second mounting housing 200 includes a first mounting lower shell 210 and a second fixing sleeve 220, the aligning block 160 is attached to the first mounting upper shell 140, the first fixing sleeve 150 is mounted on the aligning block 160, the exhaust passage 120 and the encapsulation passage 130 both extend from the first mounting upper shell 140 to the first fixing sleeve 150 through the aligning block 160, the piezoelectric transducer 500 is mounted on the first fixing sleeve 150 through the fixing portion 110, the first mounting lower shell 210 is provided with an aligning cavity in fit with the aligning block 160, the second fixing sleeve 220 is mounted on the first mounting lower shell 210, and the second fixing sleeve 220 is communicated with the aligning cavity, the matching layer 400 is disposed inside the second fixing sleeve 220, and the first fixing sleeve 150 is engaged with the second fixing sleeve 220. Specifically, when the first mounting case 100 is assembled, the first mounting upper case 140, the alignment block 160 and the first fixing sleeve 150 may be integrally formed or welded. The first mounting upper case 140, the aligning block 160 and the first fixing sleeve 150 may be concentrically mounted according to mounting requirements. When the second mounting case 200 is assembled, the first mounting lower case 210 and the second fixing sleeve 220 may be integrally formed or welded, and the first mounting lower case 210 and the second fixing sleeve 220 are concentrically mounted according to mounting requirements. Further, when the first and second mounting housings 100 and 200 are assembled, the first fixing sleeve 150 is inserted into the second fixing sleeve 220, and the alignment block 160 is inserted into the alignment groove. The above-mentioned mounting manner can effectively ensure the alignment mounting of the first mounting housing 100 and the second mounting housing 200.
In one embodiment, two or more fitting grooves are formed at intervals on the side of the first fixing sleeve 150 along the circumferential direction of the first fixing sleeve 150, the opening ends of the fitting grooves face the piezoelectric transducer piece 500, and the potting channel 130 communicates with the fitting grooves. Specifically, considering that when the first fixing sleeve 150 and the second fixing sleeve 220 are sleeved with each other, the first fixing sleeve 150 and the second fixing sleeve 220 may receive air pressure resistance therebetween, the matching groove is formed on the side portion of the first fixing sleeve 150, so that the air flow between the first fixing sleeve 150 and the second fixing sleeve 220 can be effectively and quickly guided out, and the sleeving of the first fixing sleeve 150 and the second fixing sleeve 220 is more convenient. Further, the damping member 300 is a damping agent or a damping potting adhesive, and the potting channel 130 is communicated with the adaptation groove, so that when the damping agent flows to the piezoelectric transduction piece 500, the damping agent can drip to the surface of the piezoelectric transduction piece 500 through the adaptation groove and complete the laying of the piezoelectric transduction piece 500. By forming the fitting grooves at the side of the first fixing sleeve, the damping member 300 can be prevented from being detained at the side of the first fixing sleeve 150.
Referring to fig. 1, in an embodiment, the fixing portion 110 includes a plurality of fixing ribs 111, the fixing ribs 111 are mounted at the end of the first fixing sleeve 150 at intervals along the circumferential direction of the first fixing sleeve 150, and the fixing ribs 111 are all used for abutting and fixing the piezoelectric transducer 500. Specifically, after the plurality of fixing ribs 111 are installed on the first fixing sleeve 150, the fixing ribs 111 may be higher than the end of the first fixing sleeve 150 by a certain distance, that is, the fixing ribs 111 circumferentially collide with the side of the piezoelectric transducer piece 500, thereby fixing the piezoelectric transducer piece 500 on the first fixing sleeve 150. Meanwhile, in order to ensure sufficient interference between the piezoelectric transducer 500 and the matching layer 400, the height of the fixing rib 111 higher than the first fixing sleeve 150 is less than or equal to the thickness of the piezoelectric transducer 500.
Referring to fig. 1 to 3, in one embodiment, the exhaust channel 120 includes an exhaust hole 121, the potting channel 130 includes a first potting hole 131 and a second potting hole 132, two or more fitting grooves include a first fitting groove 151 and a second fitting groove 152, the first fitting groove 151 and the second fitting groove 152 are spaced apart along a circumferential direction of the first fixing sleeve 150 and are disposed at a side portion of the first fixing sleeve 150, the first potting hole 131 passes through the alignment block 160 from the first mounting upper shell 140 and extends to the first fitting groove 151, the second potting hole 132 passes through the alignment block 160 from the first mounting upper shell 140 and extends to the second fitting groove 152, and the exhaust hole 121 passes through the alignment block 160 from the first mounting upper shell 140 and extends to an inside of the first fixing sleeve 150. Specifically, the number of the exhaust holes 121 and the number of the first hole filling hole 131 and the second hole filling hole 132 may be selected according to installation requirements. When filling the damper 300, the damper 300 may be filled through the vent hole 121, the first sealing hole 131, or the second sealing hole 132. It should be noted that the exhaust hole 121, the first hole 131 and the second hole 132 may be selected from any one or two of the three holes for potting or exhaust treatment according to the assembly requirement. For example: the damping member 300 is filled through the first filling hole 131 and the second filling hole 132, and at this time, air inside the first mounting case 100 is discharged through the air outlet hole 121. After the damping member 300 and the piezoelectric transducer 500 are fully attached to form a damping layer, the damping member 300 is further filled, and the damping member 300 fills the first sleeve, the first filling hole 131, the second filling hole 132 and the exhaust hole 121, so that the installation tightness of the first installation shell 100 is ensured.
In one embodiment, the exhaust hole 121 is located between the first potting hole 131 and the second potting hole 132 on the first mounting upper case 140. In particular, such an embodiment as described above may make it easier for the air inside the first mounting case 100 to be led out.
Referring to fig. 2, in one embodiment, the ultrasonic transducer device further includes a signal line 600, one end of the signal line 600 is inserted into the first fixing sleeve 150 through the exhaust hole 121, the other end of the signal line 600 is located outside the first mounting case 100, and one end of the signal line 600 inserted into the first fixing sleeve 150 is electrically connected to the piezoelectric transducer piece 500 through a connecting wire 700; or the signal wire 600 is inserted into one end of the first fixing sleeve 150 and is directly electrically connected with the piezoelectric transducer 500. In particular, the assembly of the connection lines, the piezoelectric transducer piece 500 is achieved on the first mounting case 100, it is possible to optimize the structure of the ultrasonic transducer device and to make the manufacturing process of the ultrasonic transducer device simpler.
In one embodiment, the sealing ring is sleeved outside the alignment block 160, a sealing groove opposite to the sealing ring is additionally formed on the first lower installation shell 210, and when the first upper installation shell 140 and the first lower installation shell 210 are assembled, a sealing ring is additionally formed on the first upper installation shell 140 and is in sealing fit with the sealing groove. In particular, the embodiment can effectively improve the assembling sealing performance of the ultrasonic wave transduction device.
In one embodiment, the first mounting case 100 includes a second mounting upper shell and a third fixing sleeve, the second mounting case 200 includes a second mounting lower shell and a fourth fixing sleeve, the third fixing sleeve is mounted on the second mounting upper shell, the exhaust channel 120 and the encapsulation channel 130 both extend from the second mounting upper shell to the third fixing sleeve, the piezoelectric transducer piece 500 is mounted on the third fixing sleeve through the fixing portion 110, the fourth fixing sleeve is mounted on the second mounting lower shell, the matching layer 400 is mounted inside the fourth fixing sleeve, and the third fixing sleeve and the fourth fixing sleeve are sleeved to be matched. Specifically, when the third mounting housing is assembled with the fourth mounting housing, the third fixing sleeve is sleeved into the fourth fixing sleeve. The above-mentioned mounting manner can facilitate the alignment and mounting of the first mounting housing 100 and the second mounting housing 200.
Referring to fig. 4, in an embodiment, a method for assembling an ultrasonic transducer apparatus, which uses the ultrasonic transducer apparatus according to any one of the above embodiments, further includes the following steps:
s100, installing the matching layer 400 inside the first installation housing 100, and forming two or more exhaust channels 120 on the second installation housing 200;
s200, fixedly installing the piezoelectric transduction piece 500 on the second installation shell 200, and ensuring that more than two exhaust channels 120 can extend to one surface of the piezoelectric transduction piece 500 departing from the matching layer 400;
s300, guiding the damping piece 300 to the piezoelectric transduction piece 500 through the encapsulation channel 130;
s400, the first installation shell 100 is matched with the second installation shell 200 in an installation mode, and the piezoelectric energy conversion piece 500 and the matching layer 400 can be attached and abutted.
When the ultrasonic transducer device is assembled, air between the damper 300 and the piezoelectric transducer piece 500 can be directly exhausted through the exhaust passage 120, that is, air is prevented from being trapped between the damper 300 and the piezoelectric transducer piece 500. The first installation shell 100 and the second installation shell 200 are installed in an aligned mode, and the piezoelectric transduction piece 500 is attached to the matching layer 400 and abutted against the matching layer 400, so that air between the piezoelectric transduction piece 500 and the matching layer 400 can be effectively discharged. Therefore, the ultrasonic transducer device does not need to be subjected to exhaust treatment by means of an external pressurizing tool during assembly, and the concentricity of the piezoelectric transducer piece 500, the damping piece 300 and the matching layer 400 is ensured.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Claims (10)
1. An ultrasonic transducing device, characterized in that it comprises: first installation casing, second installation casing, damping piece, matching layer and piezoelectricity transducing piece, be equipped with the fixed part on the first installation casing, the matching layer is installed on the second installation casing, piezoelectricity transducing piece passes through the fixed part with the fixed cooperation of first installation casing, be equipped with exhaust passage and embedment passageway on the first installation casing, exhaust passage with the embedment passageway all extends to piezoelectricity transducing piece deviates from the one side on matching layer, the damping piece process embedment passageway direction piezoelectricity transducing piece works as first installation casing with when second installation casing installation assembly, piezoelectricity transducing piece with matching layer laminating is contradicted.
2. The ultrasonic transducer according to claim 1, wherein the first mounting housing comprises a first mounting upper shell, a first fixing sleeve and an alignment block, the second mounting housing comprises a first mounting lower shell and a second fixing sleeve, the alignment block is attached to the first mounting upper shell, the first fixing sleeve is mounted on the alignment block, the exhaust channel and the encapsulation channel both extend from the first mounting upper shell to the first fixing sleeve through the alignment block, the piezoelectric transducer is mounted on the first fixing sleeve through the fixing portion, the first mounting lower shell is provided with an alignment cavity in fit with the alignment block, the second fixing sleeve is mounted on the first mounting lower shell and is communicated with the alignment cavity, the matching layer is mounted inside the second fixing sleeve, the first fixing sleeve is matched with the second fixing sleeve in a sleeved mode.
3. The ultrasonic transducer device according to claim 2, wherein two or more fitting grooves are formed at intervals on the side of the first fixing sleeve along the circumferential direction of the first fixing sleeve, the opening ends of the fitting grooves face the piezoelectric transducer piece, and the potting channel is communicated with the fitting grooves.
4. The ultrasonic transducer device according to claim 3, wherein the fixing portion comprises a plurality of fixing ribs, the plurality of fixing ribs are mounted at the end portion of the first fixing sleeve along the circumferential interval of the first fixing sleeve, and the plurality of fixing ribs are all used for abutting against and fixing the piezoelectric transducer piece.
5. The ultrasonic transducer device according to claim 3, wherein the exhaust channel includes an exhaust hole, the potting channel includes a first potting hole and a second potting hole, two or more of the fitting grooves include a first fitting groove and a second fitting groove, the first fitting groove and the second fitting groove are provided at a side portion of the first fixing sleeve at a circumferential interval along the first fixing sleeve, the first potting hole passes through the aligning block from the first mounting upper case and extends to the first fitting groove, the second potting hole passes through the aligning block from the first mounting upper case and extends to the second fitting groove, and the exhaust hole passes through the aligning block from the first mounting upper case and extends to an inside of the first fixing sleeve.
6. The ultrasonic transducer device according to claim 5, wherein the exhaust hole is located between the first potting hole and the second potting hole on the first mounting upper case.
7. The ultrasonic transducer device according to claim 5, further comprising a signal wire, wherein one end of the signal wire is inserted into the first fixing sleeve through the exhaust hole, the other end of the signal wire is located outside the first mounting housing, and the one end of the signal wire inserted into the first fixing sleeve is electrically connected to the piezoelectric transducer piece through a connecting wire; or the signal wire is inserted into one end of the first fixed sleeve and is directly electrically connected with the piezoelectric transducer.
8. The ultrasonic transducer according to claim 5, wherein a sealing ring is sleeved on the outside of the alignment block, a sealing groove opposite to the sealing ring is additionally formed on the first lower mounting shell, and when the first upper mounting shell and the first lower mounting shell are mounted and assembled, the sealing ring is additionally formed on the first upper mounting shell and is in sealing fit with the sealing groove.
9. The ultrasonic transducer device according to claim 1, wherein the first mounting housing includes a second mounting upper housing and a third fixing sleeve, the second mounting housing includes a second mounting lower housing and a fourth fixing sleeve, the third fixing sleeve is mounted on the second mounting upper housing, the exhaust channel and the encapsulation channel both extend from the second mounting upper housing to the third fixing sleeve, the piezoelectric transducer piece is mounted on the third fixing sleeve through the fixing portion, the fourth fixing sleeve is mounted on the second mounting lower housing, the matching layer is mounted inside the fourth fixing sleeve, and the third fixing sleeve and the fourth fixing sleeve are sleeved and matched.
10. A method of assembling an ultrasonic transducer apparatus, using the ultrasonic transducer apparatus according to any one of claims 1 to 9, further comprising the steps of:
installing the matching layer in the first installation shell, and arranging more than two exhaust channels on the second installation shell;
fixedly mounting the piezoelectric transduction piece on the second mounting shell, and ensuring that more than two exhaust channels can extend to the surface of the piezoelectric transduction piece, which is far away from the matching layer;
guiding the damping piece to the piezoelectric transduction piece through the encapsulation channel;
will first installation casing with the installation cooperation of second installation casing, and guarantee piezoelectric transducer piece with the matching layer can laminate and contradict.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110599437.1A CN113399237B (en) | 2021-05-31 | 2021-05-31 | Ultrasonic transducer and assembly method |
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| CN202110599437.1A CN113399237B (en) | 2021-05-31 | 2021-05-31 | Ultrasonic transducer and assembly method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115077638A (en) * | 2022-05-10 | 2022-09-20 | 陕西航天动力高科技股份有限公司 | Ultrasonic flowmeter transducer assembly and ultrasonic flowmeter |
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