CN114280616A - Vibrating diaphragm structure, ultrasonic sensor and directional sound production device - Google Patents
Vibrating diaphragm structure, ultrasonic sensor and directional sound production device Download PDFInfo
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- CN114280616A CN114280616A CN202111555214.1A CN202111555214A CN114280616A CN 114280616 A CN114280616 A CN 114280616A CN 202111555214 A CN202111555214 A CN 202111555214A CN 114280616 A CN114280616 A CN 114280616A
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Abstract
The invention relates to the technical field of sound production, in particular to a vibrating diaphragm structure, an ultrasonic sensor and a directional sound production device, wherein the vibrating diaphragm structure comprises: the main part, the main part is rotational symmetry structure and is the loudspeaker form, and the opening direction of main part loudspeaker form is first direction, and the main part includes on the section along containing its rotation axis center: the first arc section is positioned on the main body and close to the rotating shaft center, and the first arc section protrudes towards one end close to the opening direction; the second circular arc section, the second circular arc section is located the main part and keeps away from the one end of rotation axle center, and the second circular arc section is to keeping away from the one end protrusion of opening direction. In the invention, when the sound wave returns, the first arc section protrudes towards the opening direction, so that the returned sound wave can be better deformed and the deformation is larger, thereby better receiving the sound wave and increasing the strength of signal sending and receiving. The second arc segment contracts the edge of the diaphragm, so that the transmitting and receiving angles are reduced, and the detection distance is longer.
Description
Technical Field
The invention relates to the technical field of sound production, in particular to a vibrating diaphragm structure, an ultrasonic sensor and a directional sound production device.
Background
The traditional distance measuring sensors are generally ultrasonic sensors, wherein ultrasonic distance measuring comprises two distance measuring methods, wherein one method is an open type, namely, two sensors are used, one transmits ultrasonic waves, and the other receives the ultrasonic waves to measure the distance; the other is closed type, namely, the ultrasonic wave transmitting and receiving device consists of a single sensor which integrally transmits and receives ultrasonic waves.
The two open sensors have high cost and limited installation mode and space, while the closed sensors have short testing distance and high cost although receiving and transmitting, so that the two forms have defects.
In view of the above problems, the present designer is based on the practical experience and professional knowledge that are abundant for many years in engineering application of such products, and is engaged in the application of theory to actively make research and innovation, so as to create a diaphragm structure, an ultrasonic sensor and a directional sound-generating device, and make them more practical.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention provides a vibrating diaphragm structure, an ultrasonic sensor and a directional sound production device, thereby effectively solving the problems in the background art.
In order to achieve the purpose, the invention adopts the technical scheme that: a vibrating diaphragm structure, ultrasonic sensor and directional sound production device includes:
the main part, the main part is rotational symmetry structure and is the loudspeaker form, the opening direction of main part loudspeaker form is first direction, the main part includes on the section along containing its rotation axis center:
the first arc section is positioned on the main body and close to the rotating shaft center, and the first arc section protrudes towards one end close to the opening direction;
the second circular arc section, the second circular arc section is located the one end of rotation axis is kept away from to the main part, the second circular arc section is to keeping away from the one end protrusion of opening direction.
Further, a transition section is arranged between the first circular arc section and the second circular arc section, the transition section is a straight line section, and two ends of the transition section are respectively tangent to the first circular arc section and the second circular arc section.
Further, a transition section is arranged between the first circular arc section and the second circular arc section, the transition section is a curve section, two ends of the transition section are respectively tangent to the first circular arc section and the second circular arc section, and the radius of the curve section is at least equal to the radius R of the first circular arc section1Or the radius R of the second circular arc section210 times higher than the original value.
Furthermore, a closing section is arranged at one end, far away from the rotating axis, of the second circular arc section, the closing section is arc-shaped, and the circular radius R of the closing section is3Is smaller than the radius R of the circle where the second circular arc section is positioned2。
Furthermore, the included angle alpha between the tangent line of the closing section at the position farthest away from the rotating shaft center and the first direction is 0-45 degrees.
Further, the main body is provided with a plane end at an end far away from the first direction, and the plane end is perpendicular to the first direction.
Furthermore, damping paper is arranged at one end, close to the opening, of the main body, and the damping paper is attached to the surface of the main body.
The invention also comprises an ultrasonic sensor which comprises the diaphragm structure.
The invention also comprises a directional sound production device which comprises the vibrating diaphragm structure.
The invention has the beneficial effects that: according to the invention, the main body is in a horn shape and comprises a first arc section and a second arc section, the first arc section is positioned on the main body and close to the rotating axis, the first arc section protrudes towards one end close to the opening direction, when the sound wave returns, the main body receives the sound wave from the opening, and the first arc section protrudes towards the opening direction, so that the returned sound wave can be better deformed, the sound wave can be better received, and the strength of signal sending and receiving is increased. The size of the arc of the first arc section is also related to the strength of the sensitivity of sound wave transmitting and receiving, and the larger the arc is, the higher the sensitivity of transmitting and receiving signals is, and the arc can be flexibly selected according to the actual needs of products. The second arc section is positioned at one end of the main body far away from the rotating shaft center, protrudes towards one end far away from the opening direction, and contracts the edge of the vibrating diaphragm, so that the transmitting and receiving angles are reduced, the detection distance is longer, the vibrating diaphragm can not be applied to a traditional open type sensor, the effect of sending and receiving signals by one sensor is achieved, the cost is not saved, and the detection distance is long; but also can be applied to a directional sound production device, the sound production angle is small, directional sound transmission can be realized, almost no sound exists when the sound production angle exceeds the sound production angle, and the privacy can be well protected.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a front view of a diaphragm structure;
fig. 2 and 3 are cross-sectional views a-a of fig. 1.
Reference numerals: 1. a first arc segment; 2. a second arc segment; 21. a mouth-closing section; 3. a transition section; 4. a planar end.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 3: a diaphragm structure comprising:
the main part, the main part is rotational symmetry structure and is the loudspeaker form, and the opening direction of main part loudspeaker form is first direction, and the main part includes on the section along containing its rotation axis center:
the first arc section 1 is positioned on the main body and close to the rotating shaft center, and the first arc section 1 protrudes towards one end close to the opening direction;
second circular arc section 2, second circular arc section 2 are located the main part and keep away from the one end of rotation axis, and second circular arc section 2 is to keeping away from the one end protrusion of opening direction.
Through setting up the main part, the main part is the loudspeaker form, wherein the main part includes first circular arc section 1 and second circular arc section 2, first circular arc section 1 is located and is close to rotation axis department in the main part, first circular arc section 1 is to the one end protrusion that is close to the opening direction, when the sound wave returns, the main part is received the sound wave from the opening part, first circular arc section 1 is because it is to opening direction protrusion, so the sound wave that returns can be better make it take place deformation, deformation is bigger, thereby better receiving the sound wave, increase the intensity of signalling and receipt. The size of the arc of the first arc section 1 is related to the strength of the sensitivity of sound wave transmitting and receiving, and the larger the arc is, the higher the sensitivity of transmitting and receiving signals is, so that the first arc section can be flexibly selected according to the actual needs of products.
The second arc section 2 is positioned at one end of the main body far away from the rotating axis, the second arc section 2 protrudes towards one end far away from the opening direction, and the second arc section 2 contracts the edge of the vibrating diaphragm, so that the transmitting and receiving angles are reduced, the detection distance is longer, the vibrating diaphragm can not be applied to a traditional open type sensor, the effect of sending and receiving signals by one sensor is achieved, the cost is not saved, and the detection distance is long; but also can be applied to a directional sound production device, the sound production angle is small, directional sound transmission can be realized, almost no sound exists when the sound production angle exceeds the sound production angle, and the privacy can be well protected.
In this embodiment, be changeover portion 3 between first circular arc section 1 and the second circular arc section 2, changeover portion 3 is the straightway, and both ends are tangent with first circular arc section 1 and second circular arc section 2 respectively to realize the transition between first circular arc section 1 and the second circular arc section 2.
Or, the transition section 3 is a curve section, and two ends of the transition section are respectively tangent to the first arc section 1 and the second arc section 2, and the radius of the curve section is at least 10 times of the radius R1 of the first arc section 1 or the radius R2 of the second arc section 2. The transition section 3 is set to be a curve section, so that the transition can be smoother, but in order to prevent the curve of the transition section 3 from influencing the emission and the reception of sound waves, the radius of the circle where the transition section is located is set to be far larger than that of the circle where the first circular arc section 1 is located or far larger than that of the circle where the second circular arc section 2 is located, so that the transition is smooth, and the curvature of the transition is small.
In this embodiment, the second arc segment 2 is provided with a closing section 21 at an end away from the rotation axis, the closing section 21 is arc-shaped, and the radius R3 of the closing section 21 is smaller than the radius R2 of the second arc segment 2.
Through setting up the closing in section 21, can contract better to the vibrating diaphragm edge, and because closing in section 21 place radius of circle is less than second circular arc section 2 place radius of circle to realized reaching the purpose of shrink sooner at the vibrating diaphragm edge, made it realize littleer transmission and receiving angle, and less to receiving intensity and sensitivity influence.
Preferably, in the above embodiment, an angle α between a tangent line of the closing section 21 farthest from the rotation axis and the first direction is 0 to 45 °.
The smaller the included angle between the tangent of the closing section 21 at the farthest position from the rotating shaft center and the first direction is, the faster the closing section is contracted, the smaller the launching and receiving angle of the diaphragm is, but the minimum can not be smaller than 0 degrees, and the maximum angle can not be larger than 45 degrees in order to realize the closing effect.
In this embodiment, the body is provided with a planar end 4 at an end remote from the first direction, the planar end 4 being perpendicular to the first direction. Through setting up plane end 4, plane end 4 perpendicular to first direction, in the vibrating diaphragm use, plane end 4 and vibration generating device are laminated like piezoelectric patches etc. and make it drive the vibrating diaphragm and vibrate to send the sound wave.
Preferably, in the above embodiment, the damping paper is provided at one end of the main body near the opening, and the damping paper is attached to the surface of the main body.
Through setting up damping paper in main part open-ended one end, reach and increase a damped effect for the vibrating diaphragm to reduce the aftershock of product, increase detectivity, can reduce the blind area that the distance detected when using on the ultrasonic sensor on the one hand, on the other hand when using on directional sound generating mechanism, can not carry out frequency modulation to it again, reduce product cost, guarantee the stability of its tone quality.
The embodiment also comprises an ultrasonic sensor, which comprises the diaphragm structure, wherein the ultrasonic sensor can use the traditional open type sensor in other structures except the diaphragm, but the limitation of two sensors is avoided, the acoustic wave signal sending and receiving are integrated, the cost is lower, and the problem of short testing distance of the traditional closed type sensor is avoided.
This embodiment still includes a directional sound generating mechanism, includes as above-mentioned vibrating diaphragm structure for directional sound generating mechanism's sound production angle is little, can realize directional transaudient, surpasss its sound production angle then there is not sound almost, plays the effect of fine protection privacy.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A diaphragm structure, comprising:
the main part, the main part is rotational symmetry structure and is the loudspeaker form, the opening direction of main part loudspeaker form is first direction, the main part includes on the section along containing its rotation axis center:
the first arc section is positioned on the main body and close to the rotating shaft center, and the first arc section protrudes towards one end close to the opening direction;
the second circular arc section, the second circular arc section is located the one end of rotation axis is kept away from to the main part, the second circular arc section is to keeping away from the one end protrusion of opening direction.
2. The diaphragm structure of claim 1, wherein a transition section is disposed between the first arc section and the second arc section, the transition section is a straight line section, and two ends of the transition section are respectively tangent to the first arc section and the second arc section.
3. The diaphragm structure of claim 1, wherein a transition section is arranged between the first circular arc section and the second circular arc section, and the transition section isA curve section, two ends of which are respectively tangent with the first arc section and the second arc section, and the radius of the circle where the curve section is located is at least the radius R of the circle where the first arc section is located1Or the radius R of the second circular arc section210 times higher than the original value.
4. The diaphragm structure of claim 1, wherein a closed section is disposed at an end of the second arc section away from the rotation axis, the closed section is arc-shaped, and a radius R of the circle where the closed section is located is smaller than the radius R of the circle where the second arc section is located3Is smaller than the radius R of the circle where the second circular arc section is positioned2。
5. The diaphragm structure of claim 4, wherein a tangent of the mouth-closing section at a position farthest from the rotation axis forms an angle α of 0-45 ° with the first direction.
6. The diaphragm structure of claim 1, wherein the body is provided with a planar end at an end away from the first direction, the planar end being perpendicular to the first direction.
7. The diaphragm structure of any one of claims 1 to 6, wherein the main body is provided with damping paper at an end near the opening, and the damping paper is attached to the surface of the main body.
8. An ultrasonic sensor, comprising a diaphragm structure as claimed in any one of claims 1 to 7.
9. A directional sound emitting device, characterized by comprising a diaphragm structure according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111555214.1A CN114280616A (en) | 2021-12-17 | 2021-12-17 | Vibrating diaphragm structure, ultrasonic sensor and directional sound production device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111555214.1A CN114280616A (en) | 2021-12-17 | 2021-12-17 | Vibrating diaphragm structure, ultrasonic sensor and directional sound production device |
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| Publication Number | Publication Date |
|---|---|
| CN114280616A true CN114280616A (en) | 2022-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111555214.1A Pending CN114280616A (en) | 2021-12-17 | 2021-12-17 | Vibrating diaphragm structure, ultrasonic sensor and directional sound production device |
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|---|---|
| CN (1) | CN114280616A (en) |
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2021
- 2021-12-17 CN CN202111555214.1A patent/CN114280616A/en active Pending
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