CN220545140U - Transducer and automobile - Google Patents

Abstract

The utility model provides a transducer and an automobile, wherein the transducer comprises a shell, a sounding unit and a conducting piece, a containing cavity is formed in the shell, the sounding unit and the conducting piece are arranged in the containing cavity, the sounding unit comprises a piezoelectric ceramic piece, a supporting position is formed on the inner wall surface of the shell, and the conducting piece is arranged on the supporting position and connected with the piezoelectric ceramic piece. The sounding unit comprises a piezoelectric ceramic piece, and the conducting piece is arranged on the supporting position and connected with the piezoelectric ceramic piece. After the external circuit transmits an electric signal to the piezoelectric ceramic plate, the piezoelectric ceramic plate vibrates, and the vibration generated by the piezoelectric ceramic plate is transmitted to the shell through the conducting piece to cause the shell to vibrate to generate sound because the conducting piece is connected with the supporting position and the piezoelectric ceramic plate. Compared with the traditional transducer, the embodiment does not need to be provided with a coil and a magnet, occupies a small volume, and transmits the vibration of the piezoelectric ceramic plate to the shell through the conducting piece so that the shell vibrates together to produce sound, and the integrity of the internal and external structures of the transducer is ensured without arranging a sound producing hole.

Description

Transducer and automobile

Technical Field

The utility model relates to the technical field of energy converters, in particular to an energy converter and an automobile.

Background

Conventional transducers include electromagnets, coils, diaphragms, etc. that utilize varying currents through the coils to produce varying magnetic fields that interact with the magnetic fields produced by the electromagnets to cause the coils to vibrate. The coil is connected with the vibrating diaphragm, so that the vibrating diaphragm is driven to vibrate together according to a preset frequency to generate sound. However, due to the arrangement of magnets, coils, etc., conventional transducers typically have a certain thickness; when the electronic product is arranged on a vehicle, the traditional transducer occupies relatively large volume and space, and a sounding hole is required to be formed in an outer plate or an inner member of the vehicle body, so that the electronic product is not beneficial to miniaturization and thinning of the current electronic product and realization of the integrity of an internal junction and an external junction of the vehicle body.

In view of this, there is a need to provide a new transducer and automobile that solves or at least alleviates the above-mentioned technical drawbacks.

Disclosure of Invention

The utility model mainly aims to provide a transducer and an automobile, and aims to solve the technical problems of large volume and incomplete external structure of the traditional transducer.

In order to achieve the above object, according to one aspect of the present utility model, there is provided a transducer including a housing, a sound generating unit and a conductive member, wherein a receiving cavity is formed in the housing, the sound generating unit and the conductive member are disposed in the receiving cavity, the sound generating unit includes a piezoelectric ceramic sheet, a supporting position is formed on an inner wall surface of the housing, and the conductive member is mounted on the supporting position and connected to the piezoelectric ceramic sheet.

In an embodiment, the sound generating unit further comprises a vibrating diaphragm, and the piezoelectric ceramic piece is adhered to the vibrating diaphragm.

In an embodiment, the number of the piezoelectric ceramic plates is two, the two piezoelectric ceramic plates are respectively adhered to two opposite sides of the vibrating diaphragm, and the two piezoelectric ceramic plates are arranged in parallel.

In an embodiment, the number of the conductive elements is plural, and the plural conductive elements are respectively disposed on the two piezoelectric ceramic plates.

In an embodiment, the sound generating unit further comprises a mounting frame, the vibrating diaphragm is mounted on the mounting frame, a mounting step is arranged on the inner wall surface of the shell, and the mounting frame is mounted on the mounting step.

In an embodiment, an adhesion site is provided on the mounting frame, the transducer further comprises a flexible circuit board, the flexible circuit board is mounted on the adhesion site, and the flexible circuit board is electrically connected with the piezoelectric ceramic plate.

In one embodiment, the outer edge of the mounting frame is provided with a positioning groove.

In an embodiment, the mounting step includes a plurality of supporting blocks, and the plurality of supporting blocks are enclosed on the periphery of the supporting position.

In an embodiment, a step is provided on a side of each support block facing the support position.

In an embodiment, the housing includes a front surface and a back surface opposite to the front surface, the front surface and the back surface are both provided with the supporting positions, the number of the conductive pieces is plural, and the plurality of the conductive pieces are respectively installed on the supporting positions of the front surface and the back surface.

In an embodiment, the conducting piece is a hollow block or a solid block, and two sides of the conducting piece are respectively connected with the piezoelectric ceramic piece and the supporting position.

In one embodiment, the housing is not provided with sound emitting holes.

According to one aspect of the utility model there is provided an automobile comprising a transducer as described above, the housing comprising an outer body panel and an inner member which cooperate to form the receiving cavity.

In the above-mentioned scheme, the transducer includes casing, sound generating unit and conducting piece, is formed with in the casing and holds the chamber, and sound generating unit and conducting piece set up in holding the intracavity, and sound generating unit includes piezoceramics piece, and the internal face of casing is formed with the supporting position, and the conducting piece is installed in the supporting position and is connected with piezoceramics piece. The sounding unit comprises a piezoelectric ceramic piece, and the conducting piece is arranged on the supporting position and connected with the piezoelectric ceramic piece. The embodiment mainly uses the inverse piezoelectric effect of the piezoelectric ceramic plate, when an external circuit transmits a voltage signal to the piezoelectric ceramic plate, the piezoelectric ceramic plate vibrates, and the vibration generated by the piezoelectric ceramic plate is transmitted to the shell through the conducting piece to cause the shell to vibrate together to generate sound because the conducting piece is connected with the supporting position and the piezoelectric ceramic plate. Compared with the traditional transducer, the embodiment does not need to be provided with a coil and a magnet, occupies a small volume, and transmits the vibration of the piezoelectric ceramic plate to the shell through the conducting piece to enable the shell to vibrate for sounding, and sounding holes are not needed to be arranged, so that the integrity of the internal and external structures of the transducer is ensured. The transducer is particularly suitable for automobiles, the shell can be formed by splicing an outer plate and an inner member of an automobile body, and the manufactured automobile not only occupies small volume, but also can keep the integrity of the inner and outer structures of the automobile body.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings may be obtained from the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an exploded construction of a transducer according to an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of a transducer according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram of the sound unit, conductors and flexible circuit board of a transducer according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a mounting frame of a transducer according to an embodiment of the present utility model;

FIG. 5 is another schematic view of a mounting frame of a transducer according to an embodiment of the present utility model;

FIG. 6 is a schematic view of another embodiment of a mounting frame for a transducer according to the present utility model;

FIG. 7 is a schematic view of the internal components, support locations and mounting steps of a transducer according to an embodiment of the present utility model;

FIG. 8 is a schematic diagram of the structure of a support block of a transducer according to an embodiment of the present utility model;

FIG. 9 is a schematic diagram of a transducer conductive member according to an embodiment of the present utility model;

FIG. 10 is another schematic structural view of a transducer conductive member according to an embodiment of the present utility model;

fig. 11 is a schematic view of still another structure of a transducer conductive member according to an embodiment of the present utility model.

Description of the reference numerals:

100. a transducer; 1. a receiving chamber; 2. a housing; 21. an inner wall surface; 22. an inner member; 23. an outer plate; 3. a sound generating unit; 31. a piezoelectric ceramic sheet; 32. a vibrating diaphragm; 33. a mounting frame; 331. bonding positions; 332. a positioning groove; 333. a through hole; 4. a conductive member; 41. a notch; 5. a support position; 6. mounting steps; 61. a support block; 611. a step; 7. a flexible circuit board.

The achievement of the object, functional features and advantages of the present utility model will be further described with reference to the drawings in connection with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as upper and lower … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

Moreover, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the embodiments, and when the technical solutions are contradictory or cannot be implemented, it should be considered that the combination of the technical solutions does not exist, and is not within the scope of protection claimed by the present utility model.

Referring to fig. 1 to 3, according to an aspect of the present utility model, there is provided a transducer 100 including a housing 2, a sound generating unit 3 and a conductive member 4, a receiving chamber 1 is formed in the housing 2, the sound generating unit 3 and the conductive member 4 are disposed in the receiving chamber 1, the sound generating unit 3 includes a piezoelectric ceramic sheet 31, a supporting position 5 is formed on an inner wall surface 21 of the housing 2, and the conductive member 4 is mounted on the supporting position 5 and connected to the piezoelectric ceramic sheet 31.

After the piezoelectric ceramic sheet 31 is connected to an external circuit, the positive piezoelectric effect and the negative piezoelectric effect can be triggered. The positive piezoelectric effect means that the piezoelectric ceramic plate 31 deforms by external force to cause the change of a voltage signal, and the piezoelectric ceramic plate 31 transmits the changed voltage signal to an external circuit through the flexible circuit board 7. The inverse piezoelectric effect means that an external electric signal is transmitted to the piezoelectric ceramic sheet 31, so that the piezoelectric ceramic sheet 31 vibrates.

In the above embodiment, the sound generating unit 3 includes the piezoelectric ceramic plate 31, the supporting portion 5 is connected to the inner wall surface 21 of the housing 2, and the conductive member 4 is mounted on the supporting portion 5 and connected to the piezoelectric ceramic plate 31. The embodiment mainly uses the inverse piezoelectric effect of the piezoelectric ceramic plate 31, when the external circuit transmits a voltage signal to the piezoelectric ceramic plate 31, the piezoelectric ceramic plate 31 vibrates, and the vibration generated by the piezoelectric ceramic plate 31 is transmitted to the shell 2 through the conductive piece 4 because the conductive piece 4 connects the support position 5 and the piezoelectric ceramic plate 31, so that the shell 2 vibrates to generate sound. Compared with the traditional transducer 100, the embodiment does not need to provide a coil and a magnet, occupies a smaller volume, and transmits the vibration of the piezoelectric ceramic plate 31 to the housing 2 through the conducting piece 4 so that the housing 2 vibrates together to produce sound, and does not need to provide a sound producing hole, thereby ensuring the integrity of the internal and external structures of the transducer 100. The transducer 100 is particularly suitable for use in an automobile, where the housing 2 may be formed by joining an outer panel 23 and an inner member 22 of the body of the automobile, and the resulting automobile occupies a small volume and maintains the integrity of the structure outside the body.

Referring to fig. 1 and 3, in an embodiment, the sound generating unit 3 further includes a diaphragm 32, and the piezoelectric ceramic sheet 31 is adhered to the diaphragm 32. The diaphragm 32 can be made of an organic glass plate, a stainless steel metal plate, a brass plate or other metal plates, the thickness of the diaphragm 32 can be set to be 0.05mm-0.2mm, the piezoelectric ceramic plate 31 and the diaphragm 32 can be adhered by glue or double-sided adhesive, the length and width or the diameter of the diaphragm 32 are more than or equal to the length and width or the diameter of the adhered piezoelectric ceramic plate 31, and 0.5mm is ensured, so that a section of exposed piezoelectric ceramic plate 31 is arranged at the outer edge of the diaphragm 32 after adhesion, and the diaphragm 32 can play a role in strengthening the vibration effect. The transducer 100 may be a piezoelectric speaker.

Referring to fig. 1, in an embodiment, the number of the piezoelectric ceramic plates 31 is two, the two piezoelectric ceramic plates 31 are respectively adhered to two opposite sides of the diaphragm 32, and the two piezoelectric ceramic plates 31 are arranged in parallel. The two piezoelectric ceramic plates 31 are respectively electrically connected with the flexible circuit board 7, the two piezoelectric ceramic plates 31 are arranged in parallel, the external circuit inputs voltage to the piezoelectric ceramic plates 31 in the same size, so that the vibration of the two piezoelectric ceramic plates 31 is the same in size and direction, the vibration intensity can be increased through parallel arrangement, and the vibration sounding effect is enhanced. Specifically, the number of the conductors 4 is plural, and the plurality of conductors 4 are respectively provided on the two piezoelectric ceramic plates 31. One or more conducting pieces 4 may be disposed on each piezoelectric ceramic piece 31, and when the number of the piezoelectric ceramic pieces 31 is two, the conducting pieces 4 are respectively connected with two opposite wall surfaces inside the casing 2, and when the piezoelectric ceramic piece is specifically applied to an automobile body, the conducting pieces 4 are respectively connected with the outer plate 23 and the inner member 22, so that the vibration sound effect can be enhanced. The setting of the conducting piece 4 can effectively improve the frequency response sensitivity of the transducer, weaken the low-frequency distortion effect of the transducer, improve the tone quality of the transducer and improve the user experience. Of course, those skilled in the art can set other numbers of piezoelectric ceramic plates 31 according to actual needs, the piezoelectric ceramic plates 31 are provided with positive electrodes and negative electrodes for being connected with the flexible circuit board 7, the piezoelectric ceramic plates 31 are multi-layer piezoelectric ceramic plates, the number of layers of the multi-layer piezoelectric ceramic plates is 5-50, the piezoelectric ceramic plates 31 can be of a bimorph or monocrystalline structure, and the shape of the piezoelectric ceramic plates 31 can be round or rectangular.

Referring to fig. 1 and 3, in an embodiment, the sound generating unit 3 further includes a mounting frame 33, the diaphragm 32 is mounted to the mounting frame 33, the inner wall surface 21 of the housing 2 is provided with the mounting step 6, and the mounting frame 33 is mounted to the mounting step 6. The mounting step 6 is used for providing support for the mounting frame 33, the mounting frame 33 is used for mounting the vibrating diaphragm 32 and the piezoelectric ceramic plate 31, the mounting frame 33 can be made of stainless steel metal plates, brass plates or other metal plates, the shape of the mounting frame 33 can be rectangular, circular or external round inner square, the thickness of the mounting frame 33 can be set to be between 0.2mm and 2mm, the mounting frame 33 and the vibrating diaphragm 32 are assembled through glue, double-sided adhesive or welding, and the mounting frame 33 can be fixedly mounted on the mounting step 6 through a threaded fastener, glue bonding or double-sided adhesive bonding and the like.

Referring to fig. 1, 3-6, in an embodiment, the mounting frame 33 is provided with an adhesive location 331, and the transducer 100 further includes a flexible circuit board 7, where the flexible circuit board 7 is mounted on the adhesive location 331, and the flexible circuit board 7 is electrically connected to the piezoelectric ceramic sheet 31. The mounting frame 33 is a frame body with a through hole 333 in the middle, and is used for mounting the vibrating diaphragm 32, and an adhesive position 331 is arranged on the frame body of the mounting frame 33, and the flexible circuit board 7 can be adhered on the adhesive position 331 through glue or double-sided adhesive tape. The number of the flexible circuit boards 7 is the same as the number of the piezoelectric ceramic plates 31, for example, when the number of the piezoelectric ceramic plates 31 is two, the number of the mounting frames 33 and the number of the flexible circuit boards 7 are also two, and the three are arranged in a one-to-one correspondence. In addition, the frame body is also provided with an outer rib, and the width of the outer rib is between 1mm and 6 mm.

Referring to fig. 5 and 6, in an embodiment, the outer edge of the mounting frame 33 is provided with a positioning groove 332. The positioning groove 332 may be disposed at the edge of the mounting frame 33, the positioning groove 332 is used for positioning the components during mounting, the number of the positioning grooves 332 may be 1 or more, and when the number of the positioning grooves 332 is plural, the plurality of limiting grooves are disposed at intervals along the outer edge of the mounting frame 33. Specifically, the number of the positioning grooves 332 may be 1 to 3.

Referring to fig. 7, in an embodiment, the mounting step 6 includes a plurality of support blocks 61, and the plurality of support blocks 61 are surrounded on the periphery of the support 5. The plurality of support blocks 61 are arranged coplanar for supporting the mounting frame 33. The arrangement shape of the plurality of support blocks 61 may be dependent on the shape of the mounting frame 33. If the mounting frame 33 is a square frame, the support blocks 61 are arranged in a square shape. Specifically, the number of the support blocks 61 may be four, the support blocks 61 may be L-shaped blocks, and the support position 5 may be a support step provided on the inner wall surface 21 of the housing 2 or may be a part of the inner wall surface 21 of the housing 2 itself. The area of the conductive member 4 is generally smaller than that of the piezoelectric ceramic plate 31 and the diaphragm 32, and the plurality of support blocks 61 are disposed around the periphery of the support 5, so that the conductive member 4 can be mounted on the support 5 just when the mounting frame 33 is mounted on the plurality of support blocks 61.

Referring to fig. 8, in one embodiment, each support block 61 is provided with a step 611 on a side facing the support location 5. The step 611 is provided to lock the mounting frame 33 in the support block 61 so as not to move outward, so that subsequent bonding or connection by a screw fastener is facilitated.

In one embodiment, the housing 2 includes a front surface and a back surface opposite to the front surface, the front surface and the back surface are respectively provided with a support position 5, the number of the conductive pieces 4 is plural, and the plurality of conductive pieces 4 are respectively installed on the support position 5 of the front surface and the support position 5 of the back surface. When the transducer is applied to an automobile body, the front surface thereof may be the surface of the outer plate 23 facing the accommodating chamber 1, the rear surface thereof may be the side of the inner member 22 facing the accommodating chamber 1, the front and rear surfaces of the housing 2 are each provided with a support position 5 and a mounting step 6, and the plurality of conductors 4 are respectively connected with the support positions 5 of the front surface and the support positions 5 of the rear surface, so that vibration can be simultaneously transmitted to the front surface and the rear surface of the housing 2, and vibration and sound production effects are enhanced.

Referring to fig. 9 to 11, in an embodiment, the conductive member 4 is a hollow block or a solid block, and both sides of the conductive member 4 are respectively connected to the piezoelectric ceramic plate 31 and the support 5. The area of the conduction block is 1/10-1/5 of the area of the piezoelectric ceramic plate 31, one surface of the conduction block is stuck on the supporting position 5 of the inner wall surface 21 of the shell 2 through glue or double-sided glue, and the other surface of the conduction block is connected with the piezoelectric ceramic plate 31. Referring to fig. 9, the conductive member 4 may be a solid block to provide a strong vibration sense, referring to fig. 10 and 11, the conductive member 4 may be a hollow block, and a specific shape may be a square block or a trapezoid block, and a notch 41 is provided on the square block or the trapezoid block, so that the conductive member 4 has a certain elastic space, and is convenient for deformation.

According to one aspect of the present utility model, there is provided an automobile comprising the transducer 100 described above, the housing 2 comprising an outer body panel 23 and an inner member 22, the outer body panel 23 and the inner member 22 cooperating to form the receiving cavity 1. Since the automobile includes all the technical solutions of all the embodiments of the transducer 100, all the beneficial effects of all the technical solutions are not described in detail herein.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present application, and not for limiting the scope of the present utility model; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: under the technical conception of the utility model, the technical scheme recorded in the embodiments can be modified or part or all of the technical features can be replaced equivalently; or directly/indirectly in other related technical fields, without departing from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and all such modifications or substitutions are included in the scope of the claims and the specification of the present application. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (13)

1. The transducer is characterized by comprising a shell, a sound generating unit and a conducting piece, wherein a containing cavity is formed in the shell, the sound generating unit and the conducting piece are arranged in the containing cavity, the sound generating unit comprises a piezoelectric ceramic piece, a supporting position is formed on the inner wall surface of the shell, and the conducting piece is installed at the supporting position and connected with the piezoelectric ceramic piece.

2. The transducer of claim 1, wherein the sound generating unit further comprises a diaphragm, the piezoelectric ceramic sheet being bonded to the diaphragm.

3. The transducer of claim 2, wherein the number of piezoelectric ceramic plates is two, the two piezoelectric ceramic plates are respectively adhered to two opposite sides of the diaphragm, and the two piezoelectric ceramic plates are arranged in parallel.

4. A transducer according to claim 3, wherein the number of the conductive members is plural, and the plural conductive members are respectively provided on the two piezoelectric ceramic plates.

5. The transducer of claim 2, wherein the sound generating unit further comprises a mounting frame, the diaphragm is mounted to the mounting frame, a mounting step is provided on an inner wall surface of the housing, and the mounting frame is mounted to the mounting step.

6. The transducer of claim 5, wherein the mounting frame is provided with an adhesive location, the transducer further comprising a flexible circuit board mounted to the adhesive location, the flexible circuit board electrically connected to the piezoelectric ceramic sheet.

7. The transducer of claim 5, wherein an outer edge of the mounting frame is provided with a detent.

8. The transducer of claim 5, wherein the mounting step comprises a plurality of support blocks, the plurality of support blocks surrounding a periphery of the support site.

9. The transducer of claim 8, wherein each of the support blocks is provided with a step on a side facing the support location.

10. The transducer of any of claims 1-9, wherein the housing comprises a front face and a back face disposed opposite the front face, the front face and the back face each having the support location thereon, the number of conductive members being plural, the plurality of conductive members being mounted on the support location of the front face and the support location of the back face, respectively.

11. The transducer of any of claims 1-9, wherein the conductive element is a hollow block or a solid block, and two sides of the conductive element are respectively connected to the piezoelectric ceramic plate and the support.

12. The transducer of any of claims 1-9, wherein no sound emitting aperture is provided in the housing.

13. An automobile comprising the transducer of any one of claims 1 to 12, the housing comprising an exterior body panel and an interior member, the exterior body panel and the interior member cooperating to form the receiving cavity.