CN217331183U - Ultrasonic sensor decoupling element and ultrasonic sensor structure - Google Patents
Ultrasonic sensor decoupling element and ultrasonic sensor structure Download PDFInfo
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- CN217331183U CN217331183U CN202123224241.9U CN202123224241U CN217331183U CN 217331183 U CN217331183 U CN 217331183U CN 202123224241 U CN202123224241 U CN 202123224241U CN 217331183 U CN217331183 U CN 217331183U
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Abstract
The utility model discloses an ultrasonic sensor decoupling element, it is fixed between ultrasonic sensor's vibrating diaphragm, protecgulum and shell, include: a body formed as an annular body having central axial 360 degree symmetry. The utility model discloses 360 degrees axial symmetries are designed into to ultrasonic sensing vibrating diaphragm and decoupling component in cooperation department, and decoupling component and vibrating diaphragm, protecgulum and shell contact department design inclined plane or concave-convex structure carry out the interference in further optimization scheme and fix, and protecgulum and shell pass through the buckle fixed, can improve the vibration that the ultrasonic sensor vibrating diaphragm was absorbed with 360 degrees balances to the pressure that balanced protecgulum greatly, and have good sealed effect.
Description
Technical Field
The utility model relates to an automotive filed especially relates to a decoupling component for ultrasonic sensor. And an ultrasonic sensor structure having a decoupling element of the ultrasonic sensor.
Background
In the automotive field, ultrasonic sensors are often used with driver assistance systems. The working principle of the ultrasonic sensor is that P32 inputs 40 KHz-60 KHz alternating current to a piezoelectric sheet (also called Piezo), and the piezoelectric sheet is excited by the current and coupled with a diaphragm on an aluminum shell of the sensor to generate resonance, so as to send out an ultrasonic signal; because the ultrasonic wave belongs to mechanical wave, the performance of the ultrasonic wave is directly and greatly related to the damping effect of a decoupling element (inner rubber sleeve) on the periphery of the aluminum shell and the damping balance capacity, so that the damping capacity on the periphery of the aluminum shell of the ultrasonic sensor directly determines the performance consistency of the ultrasonic sensor. However, the structure of the ultrasonic sensor on the market has the problem that the consistency of vibration absorption and conduction of an aluminum shell is poor due to the insufficient damping balance capacity.
The decoupling element fixed by the aluminum shell of the existing ultrasonic sensor is not 360-degree axial symmetry for matching the surrounding structure, so that the vibration absorption and vibration conduction of the ultrasonic aluminum shell in work are not 360-degree balance, the phenomenon that the product is sharp due to aftershock caused by unbalanced vibration absorption is caused, and the consistency of vibration absorption and conduction is poor.
SUMMERY OF THE UTILITY MODEL
In the summary section, a series of simplified form concepts are introduced, which are simplifications of the prior art in this field, and which will be further detailed in the detailed description section. The inventive content does not imply any attempt to define the essential features and essential features of the claimed solution, nor is it implied to be intended to define the scope of the claimed solution.
The to-be-solved technical problem of the utility model is to provide an ultrasonic sensor decoupling element that can reduce ultrasonic sensor vibrating diaphragm to the conduction of surrounding structure vibration.
Correspondingly, the utility model also provides an ultrasonic sensor structure of having ultrasonic sensor's decoupling component.
In order to solve the above technical problem, the utility model provides an ultrasonic sensor decoupling component, it is fixed between ultrasonic sensor's vibrating diaphragm, protecgulum and shell, include:
the body is formed as an annular body with 360-degree central axial symmetry.
Optionally, the decoupling element of the ultrasonic sensor is further improved, and the surface of the lower part of the outer side wall of the main body, which is contacted with the front cover, is formed into a concave surface, and the front cover is formed with a convex surface matched with the concave surface.
Optionally, the ultrasonic sensor decoupling element is further improved, and the main body forms an interference fit with both the housing and the diaphragm.
Optionally, the ultrasonic sensor decoupling element is further improved, a first convex part is formed on the contact surface of the upper part of the outer side wall of the main body and the inner side wall of the shell, and a first concave part adapted to the first convex part is formed on the contact surface of the inner side wall of the shell;
wherein, the main part forms interference fit with the shell through first convex part and first concave part.
Optionally, the decoupling element for an ultrasonic sensor is further improved, and an inward extension part is formed on the upper part of the outer side wall of the main body, and the main body is also in interference fit with the shell and the diaphragm through the extension part.
Optionally, the ultrasonic sensor decoupling element is further improved, at least two second convex parts are formed on the contact surface of the top wall of the outer extension part and the bottom wall of the shell, and a second concave part corresponding to the second convex parts is formed on the contact surface of the bottom wall of the shell;
wherein, the outer extension portion and the shell are in interference fit through the second convex portion and the second concave portion.
Optionally, the decoupling element of the ultrasonic sensor is further improved, a third convex part is formed on the contact surface of the bottom wall of the extension part and the top wall of the diaphragm, and a third concave part adapted to the third convex part is formed on the contact surface of the top wall of the diaphragm;
and the extension part and the diaphragm are in interference fit through the third convex part and the third concave part.
Optionally, the decoupling element for the ultrasonic sensor is further improved, an inward extension part is formed on the upper part of the outer side wall of the main body, the extension part and the inner side wall of the main body jointly form a fourth concave part, and a fourth convex part corresponding to the fourth concave part is formed on the outer side wall of the top of the diaphragm.
Optionally, the decoupling element of the ultrasonic sensor is further improved, at least two fifth convex parts are formed at the lower part of the inner side wall of the main body, and a fifth concave part adapted to the fifth convex parts is formed at the contact surface of the diaphragm and the lower part of the inner side wall of the main body;
the main body forms an interference fit with the diaphragm through the fifth convex part and the fifth concave part.
The utility model discloses it has still to provide one kind ultrasonic sensor structure's its protecgulum of decoupling component passes through the buckle with the shell and fixes.
The utility model discloses an assembly process and technological effect as follows:
firstly, the vibrating diaphragm (aluminum shell) is assembled into the decoupling element (inner rubber sleeve), and the assembly joint is axially symmetrical in 360 degrees, so that the rotating direction does not need to be appointed during assembly, the installation efficiency can be improved, and the automatic assembly is convenient.
Assembling a semi-finished product formed by assembling a vibrating diaphragm and a decoupling element into a shell according to the Solt direction of the vibrating diaphragm; referring to fig. 2, the thickness of the decoupling element 3 and the front cover 2 is sufficient to ensure that the pre-tightening force applied by the front cover can be transmitted to the vibrating component aluminum case 1 through the decoupling element 3 in a balanced manner.
And finally, the front cover 2 is buckled into the shell 4, the exemplary front cover 2 and the shell 4 are fixed by adopting buckles, 4 buckle grooves in the front cover are in close fit with 4 clamping points of the body in a symmetrical distribution manner, and the rubber sleeve in the fit provides balanced pretightening force and good damping effect for the vibration of the aluminum shell 1, and the specific performance is the improvement of the performance consistency of the product.
The interference fit of the decoupling element with the front cover, the diaphragm and the housing (ramps and projections and recesses) enables good sealing and waterproofing.
The utility model discloses 360 degrees axial symmetry are designed into to ultrasonic sensing vibrating diaphragm and decoupling component in cooperation department, and decoupling component can form inclined plane or concave-convex structure with vibrating diaphragm, protecgulum and the shell contact department of ultrasonic sensor structure and carry out the interference fixed. The front cover and the shell of the ultrasonic sensor structure are fixed through the buckle, so that the pressure of the balance front cover can be greatly improved, the vibration of the vibrating diaphragm of the ultrasonic sensor can be absorbed in a 360-degree balance manner, and a good sealing effect is achieved.
Drawings
The drawings of the present application are intended to illustrate the general nature of methods, structures and/or materials used in accordance with certain exemplary embodiments of the present application, and to supplement the description presented in the specification. The drawings of the present invention, however, are not to scale and may not accurately reflect the precise structural or performance characteristics of any given embodiment, and should not be construed as limiting or restricting the scope of numerical values or attributes encompassed by exemplary embodiments in accordance with the present invention. The present invention will be described in further detail with reference to the following detailed description and accompanying drawings:
fig. 1 is a schematic view of the main body of the present invention.
Fig. 2 is an exploded view of the present invention.
Fig. 3 is a schematic partial sectional view of the present invention.
Fig. 4 is a schematic partial sectional view of the present invention.
Description of the reference numerals
Vibrating diaphragm 1
Concave surface 5.1 at lower part of outer side wall of main body
First projection 5.2
Extension 5.3
Second projection 5.4
Third projection 5.5
Fourth recess 5.6
Fifth projection 5.7.
Detailed Description
Other advantages and technical effects of the present invention will be fully apparent to those skilled in the art from the disclosure of the present invention. The utility model discloses can also implement or use through different embodiment, each item detail in this specification can also be used based on different viewpoints, carries out various decorations or changes under the general design thought that does not deviate from the utility model. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. The following exemplary embodiments of the present invention may be embodied in many different forms and should not be construed as limited to the specific embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art.
A first embodiment;
referring to fig. 1 in conjunction with fig. 2, the present invention provides an ultrasonic sensor decoupling device, which is fixed between a diaphragm, a front cover and a housing of an ultrasonic sensor, and has an outer sidewall, a portion of which is in contact with the front cover and another portion of which is in contact with the housing, and an inner sidewall of which is in contact with the diaphragm, including:
a body 5 formed as an annular body having a central axial direction of 360 degrees symmetry.
A second embodiment;
referring to fig. 1 in conjunction with fig. 2, the present invention provides an ultrasonic sensor decoupling device, which is fixed between a diaphragm, a front cover and a housing of an ultrasonic sensor, and has an outer sidewall, a portion of which is in contact with the front cover and another portion of which is in contact with the housing, and an inner sidewall of which is in contact with the diaphragm, including:
a body 5 formed as an annular body having 360-degree symmetry in the center axial direction;
the lower part of the outer side wall of the main body 5 is provided with a concave surface 5.1 on the surface contacted with the front cover 2, and the front cover 2 is provided with a convex surface matched with the concave surface.
A third embodiment;
referring to fig. 1 in conjunction with fig. 3, the present invention provides an ultrasonic sensor decoupling device, which is fixed between a diaphragm, a front cover and a housing of an ultrasonic sensor, one portion of an outer sidewall of which is in contact with the front cover and the other portion of which is in contact with the housing, and an inner sidewall of which is in contact with the diaphragm, including:
a body 5 formed as an annular body having a central axis symmetrical by 360 degrees;
the lower part of the outer side wall of the main body 5 is provided with a concave surface 5.1 on the surface contacted with the front cover 2, and the front cover 2 is provided with a convex surface matched with the concave surface.
A first convex part 5.2 is formed on the contact surface of the upper part of the outer side wall of the main body 5 and the inner side wall of the shell 4, a first concave part matched with the first convex part is formed on the contact surface of the inner side wall of the shell, and the main body 5 and the shell 4 form interference fit through the first convex part 5.2 and the first concave part.
A fourth embodiment;
referring to fig. 1 in conjunction with fig. 3, the present invention provides an ultrasonic sensor decoupling device, which is fixed between a diaphragm, a front cover and a housing of an ultrasonic sensor, one portion of an outer sidewall of which is in contact with the front cover and the other portion of which is in contact with the housing, and an inner sidewall of which is in contact with the diaphragm, including:
a body 5 formed as an annular body having a central axis symmetrical by 360 degrees;
the lower part of the outer side wall of the main body 5 is provided with a concave surface 5.1 on the surface contacted with the front cover 2, and the front cover 2 is provided with a convex surface matched with the concave surface.
A first convex part 5.2 is formed on the contact surface of the upper part of the outer side wall of the main body 5 and the inner side wall of the shell 4, a first concave part matched with the first convex part is formed on the contact surface of the inner side wall of the shell, and the main body 5 and the shell 4 form interference fit through the first convex part 5.2 and the first concave part.
5 lateral wall upper portions of main part are formed with inward extension 5.3, and main part 5 still forms interference fit through extension 5.3 and shell 4 and vibrating diaphragm 1, and concrete structure is as follows:
at least two second convex parts 5.4 are formed on the contact surface of the top wall of the extension part 5.3 and the bottom wall of the shell 4, second concave parts corresponding to the second convex parts 5.4 are formed on the contact surface of the bottom wall of the shell, and the extension part 5.3 and the shell 4 are in interference fit through the second convex parts 5.4 and the second concave parts;
and a third convex part 5.5 is formed on the contact surface of the bottom wall of the extension part 5.3 and the top wall of the vibrating diaphragm 1, a third concave part adapted to the third convex part 5.5 is formed on the contact surface of the top wall of the vibrating diaphragm 1, and the extension part 5.3 and the vibrating diaphragm 1 are in interference fit through the third convex part 5.5 and the third concave part.
A fifth embodiment;
referring to fig. 1 in conjunction with fig. 4, the present invention provides an ultrasonic sensor decoupling device, which is fixed between a diaphragm, a front cover and a housing of an ultrasonic sensor, and has an outer sidewall, a portion of which is in contact with the front cover and another portion of which is in contact with the housing, and an inner sidewall of which is in contact with the diaphragm, including:
a body 5 formed as an annular body having a central axis symmetrical by 360 degrees;
the lower part of the outer side wall of the main body 5 is provided with a concave surface 5.1 on the surface contacted with the front cover 2, and the front cover 2 is provided with a convex surface matched with the concave surface.
A first convex part 5.2 is formed on the contact surface of the upper part of the outer side wall of the main body 5 and the inner side wall of the shell 4, a first concave part adapted to the first convex part is formed on the contact surface of the inner side wall of the shell, and the main body 5 and the shell 4 form interference fit through the first convex part 5.2 and the first concave part.
5 lateral wall upper portion of main part is formed with inward extension 5.3, and main part 5 still forms interference fit through extension 5.3 and shell 4 and vibrating diaphragm 1, and concrete structure is as follows:
at least two second convex parts 5.4 are formed on the contact surface of the top wall of the extension part 5.3 and the bottom wall of the shell 4, second concave parts corresponding to the second convex parts 5.4 are formed on the contact surface of the bottom wall of the shell, and the extension part 5.3 and the shell 4 are in interference fit through the second convex parts 5.4 and the second concave parts;
a third convex part 5.5 is formed on the contact surface of the bottom wall of the extension part 5.3 and the top wall of the vibrating diaphragm 1, a third concave part which is matched with the third convex part 5.5 is formed on the contact surface of the top wall of the vibrating diaphragm 1, and the extension part 5.3 and the vibrating diaphragm 1 are in interference fit through the third convex part 5.5 and the third concave part;
an inward extending part 5.3 is formed on the upper part of the outer side wall of the main body, a fourth concave part 5.6 is formed by the extending part 5.3 and the inner side wall of the main body 5, and a fourth convex part adapted to the fourth concave part 5.6 is formed on the outer side wall of the top of the vibrating diaphragm 1.
A sixth embodiment;
with continued reference to fig. 1 in conjunction with fig. 4, the present invention provides an ultrasonic sensor decoupling element, which is fixed between a diaphragm, a front cover and a housing of an ultrasonic sensor, and has a portion of an outer sidewall thereof in contact with the front cover and another portion in contact with the housing, and an inner sidewall thereof in contact with the diaphragm, including:
a body 5 formed as an annular body having a central axis symmetrical by 360 degrees;
the lower part of the outer side wall of the main body 5 is provided with a concave surface 5.1 on the surface contacted with the front cover 2, and the front cover 2 is provided with a convex surface matched with the concave surface.
A first convex part 5.2 is formed on the contact surface of the upper part of the outer side wall of the main body 5 and the inner side wall of the shell 4, a first concave part matched with the first convex part is formed on the contact surface of the inner side wall of the shell, and the main body 5 and the shell 4 form interference fit through the first convex part 5.2 and the first concave part.
5 lateral wall upper portion of main part is formed with inward extension 5.3, and main part 5 still forms interference fit through extension 5.3 and shell 4 and vibrating diaphragm 1, and concrete structure is as follows:
at least two second convex parts 5.4 are formed on the contact surface of the top wall of the extension part 5.3 and the bottom wall of the shell 4, second concave parts corresponding to the second convex parts 5.4 are formed on the contact surface of the bottom wall of the shell, and the extension part 5.3 and the shell 4 are in interference fit through the second convex parts 5.4 and the second concave parts;
a third convex part 5.5 is formed on the contact surface of the bottom wall of the extension part 5.3 and the top wall of the vibrating diaphragm 1, a third concave part which is matched with the third convex part 5.5 is formed on the contact surface of the top wall of the vibrating diaphragm 1, and the extension part 5.3 and the vibrating diaphragm 1 are in interference fit through the third convex part 5.5 and the third concave part;
an inward extension part 5.3 is formed at the upper part of the outer side wall of the main body 5, the extension part 5.3 and the inner side wall of the main body 5 jointly form a fourth concave part 5.6, and a fourth convex part matched with the fourth concave part 5.6 is formed on the outer side wall of the top of the vibrating diaphragm 1;
at least two fifth convex parts 5.7 are formed at the lower part of the inner side wall of the main body 5, a fifth concave part matched with the fifth convex parts 5.7 is formed on the contact surface of the vibrating diaphragm 1 and the lower part of the inner side wall of the main body 5, and the main body 5 is in interference fit with the vibrating diaphragm through the fifth convex parts 5.7 and the fifth concave part.
The decoupling elements of the first to fifth embodiments are made of silicone rubber, and have a hardness of 30 to 40(shore a).
A sixth embodiment;
the utility model provides an ultrasonic sensor structure, it has any one of above-mentioned first embodiment ~ fifth embodiment the same part of ultrasonic sensor decoupling element is no longer repeated, and the protecgulum 2 and the shell 4 of ultrasonic sensor structure are fixed at protecgulum 2 and shell 4 buckle through evenly distributed, for example fixed through 4 buckles.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The present invention has been described in detail with reference to the specific embodiments and examples, but these should not be construed as limitations of the present invention. Numerous variations and modifications can be made by those skilled in the art without departing from the principles of the invention, which should also be considered as within the scope of the invention.
Claims (9)
1. An ultrasonic sensor decoupling element secured between a diaphragm, a front cover, and a housing of an ultrasonic sensor, comprising:
a body formed as an annular body having a central axis symmetrical by 360 degrees;
at least two fifth convex parts are formed at the lower part of the inner side wall of the main body, and a fifth concave part matched with the fifth convex parts is formed on the contact surface of the vibrating diaphragm and the lower part of the inner side wall of the main body;
the main body forms interference fit with the diaphragm through the fifth convex part and the fifth concave part.
2. An ultrasonic sensor decoupling element as claimed in claim 1 wherein: the lower part of the outer side wall of the main body is provided with a concave surface on the surface contacted with the front cover, and the front cover is provided with a convex surface matched with the concave surface.
3. An ultrasonic sensor decoupling element as claimed in claim 1 wherein: the main body, the shell and the vibrating diaphragm are in interference fit.
4. An ultrasonic sensor decoupling element as claimed in claim 3 wherein: a first convex part is formed on the contact surface of the upper part of the outer side wall of the main body and the inner side wall of the shell, and a first concave part matched with the first convex part is formed on the contact surface of the inner side wall of the shell;
wherein, the main part forms interference fit with the shell through first convex part and first concave part.
5. An ultrasonic sensor decoupling element as claimed in claim 1 wherein: the main part lateral wall upper portion is formed with inside extension, and the main part still forms interference fit through extension with shell and vibrating diaphragm.
6. An ultrasonic sensor decoupling element as claimed in claim 5 wherein: at least two second convex parts are formed on the contact surface of the top wall of the extension part and the bottom wall of the shell, and second concave parts matched with the second convex parts are formed on the contact surface of the bottom wall of the shell;
wherein, the outer extension portion and the shell are in interference fit through the second convex portion and the second concave portion.
7. An ultrasonic sensor decoupling element as claimed in claim 5 wherein: a third convex part is formed on the contact surface of the bottom wall of the extension part and the top wall of the diaphragm, and a third concave part matched with the third convex part is formed on the contact surface of the top wall of the diaphragm;
and the extension part and the diaphragm are in interference fit through the third convex part and the third concave part.
8. An ultrasonic sensor decoupling element as claimed in claim 5 wherein: an inward extending part is formed on the upper part of the outer side wall of the main body, the extending part and the inner side wall of the main body jointly form a fourth concave part, and a fourth convex part matched with the fourth concave part is formed on the outer side wall of the top of the vibrating diaphragm.
9. The ultrasonic sensor structure having the ultrasonic sensor decoupling element of any one of claims 1 to 8, wherein: the front cover and the shell are fixed through a buckle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123224241.9U CN217331183U (en) | 2021-12-21 | 2021-12-21 | Ultrasonic sensor decoupling element and ultrasonic sensor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123224241.9U CN217331183U (en) | 2021-12-21 | 2021-12-21 | Ultrasonic sensor decoupling element and ultrasonic sensor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217331183U true CN217331183U (en) | 2022-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123224241.9U Active CN217331183U (en) | 2021-12-21 | 2021-12-21 | Ultrasonic sensor decoupling element and ultrasonic sensor structure |
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| CN (1) | CN217331183U (en) |
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2021
- 2021-12-21 CN CN202123224241.9U patent/CN217331183U/en active Active
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