CN220430063U

CN220430063U - Vehicle with a wheel

Info

Publication number: CN220430063U
Application number: CN202223221969.0U
Authority: CN
Inventors: 张瑜; 马斌
Original assignee: Pateo Connect and Technology Shanghai Corp
Current assignee: Pateo Connect and Technology Shanghai Corp
Priority date: 2022-01-30
Filing date: 2022-12-01
Publication date: 2024-02-02
Anticipated expiration: 2032-12-01

Abstract

The utility model provides a vehicle, which comprises a vehicle body, a connecting mechanism and a piezoelectric sounding component; the vehicle body comprises one or more preset parts; the piezoelectric sounding component is fixed to a preset part of the vehicle body through a connecting mechanism, and comprises: the piezoelectric plate vibrates under the action of an external electric field; the connecting mechanism at least comprises a first connecting component, the first connecting component is arranged on the base plates on two sides of the piezoelectric sheet and located on the front face in the deformation direction of the piezoelectric sheet, the first connecting component transmits vibration, and the first connecting component is related to the preset position of the piezoelectric sounding component, where the piezoelectric sounding component is fixed to the vehicle body, in the size of the interval between the piezoelectric sheet and the first connecting component in the deformation direction. According to the utility model, the vehicle with the sounding body is provided, and the sounding performance of the vehicle body at each preset position is convenient and adjustable.

Description

Vehicle with a wheel

Technical Field

The utility model relates to the field of vehicles, in particular to a vehicle taking a piezoelectric sounding component as a vehicle-mounted loudspeaker.

Background

With the development of economy, particularly the development of the automobile industry, the number of automobiles in the society is increasing, and with the improvement of the living standard of people, the use of automobiles as a walking tool is very common, and the requirements of consumers on the configuration of the automobiles are also increasing when the consumers purchase the automobiles. Moreover, as automobiles continue to spread throughout modern life, people's demands on automobiles are no longer limited to being a single vehicle for travel. The space of the automobile is continuously expanding outwards along with the development of technology, is not limited in the automobile, and is more extended to the outside of the automobile, and the understanding of the automobile is being subverted.

Taking a vehicle-mounted sound box as an example, the vehicle-mounted sound box in the prior art points to a loudspeaker arranged in a carriage and used for playing audio data for a user in the vehicle. The current vehicle-mounted loudspeaker mainly comprises a moving coil type loudspeaker and a capacitor type loudspeaker. Piezoelectric sounding components, especially sheet oscillator sounders, are emerging in recent years as sounding technologies due to their light and thin size and low operating power consumption. However, the piezoelectric sounding technology is mainly applied to intelligent mobile terminals and OLED televisions at present, and in the vehicle-mounted field, the piezoelectric sounding technology is only applied to a buzzer for alarming a vehicle, and the piezoelectric sounding component is not applied to the vehicle, and is applied as a vehicle-mounted loudspeaker.

Unlike applications on smart mobile terminals or televisions, the mounting locations of vehicle speakers on vehicles are diversified and there are also requirements for acoustic performance (e.g., volume is large enough, high and low audio is required). It is necessary to consider how to provide a piezoelectric sound-emitting device having sound-emitting properties suitable for different mounting locations of a vehicle to satisfy the hearing demand of a user.

Therefore, how to flexibly apply the piezoelectric sounding technology to a vehicle and provide a vehicle with a piezoelectric sounding component as a vehicle-mounted speaker is a technical problem that is being solved by those skilled in the art.

Disclosure of Invention

The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.

The utility model provides a vehicle, which has the advantages that piezoelectric sounding components are arranged at different preset positions of a vehicle body of the vehicle, the piezoelectric sounding components are used as vehicle-mounted speakers, sounding performance of the piezoelectric sounding components is related to the preset positions of the piezoelectric sounding components fixed on the vehicle body, the overall hearing effect can be improved, and user experience is good.

Another object of the present utility model is to provide a vehicle, which has the advantages that the piezoelectric sounding components are disposed on the outer shell plate, the inner decorative plate and the vehicle body component of the vehicle body, so that the piezoelectric sounding components fixed on the outer shell plate are more suitable for sounding towards the outside of the vehicle, and the piezoelectric sounding components fixed on the inner decorative plate and the vehicle body component are more suitable for sounding towards the space inside the vehicle, and the vehicle has both an external speaker and an internal speaker on the vehicle, thereby meeting various application requirements of users and improving user experience.

Another object of the present utility model is to provide a vehicle, which has the advantage that the piezoelectric sounding component directly drives the shell plate, the inner decoration plate or the vehicle body component to vibrate, so that the shell plate, the inner decoration plate or the vehicle body component amplifies sound, the vehicle body of the vehicle is fully utilized, and the cost is saved.

Another object of the present utility model is to provide a vehicle, which has the advantage that the volume of the vehicle speaker can be ensured by the sound amplifying assembly, so as to meet the requirements of users.

Another object of the present utility model is to provide a vehicle, which has the advantages that the piezoelectric sounding components can be disposed at a plurality of preset positions of the vehicle, so that a combined vehicle-mounted speaker system can be provided, and the piezoelectric sounding components with different sounding performances are disposed at each preset position, so that a stereo surround sound field can be provided, and an auditory effect is improved.

It is another object of the present utility model to provide a vehicle in which a piezoelectric sounding assembly can be disposed in a hollow interlayer between an outer skin and an inner skin of a vehicle door, thereby providing a mono or multi-channel acoustic effect with one or more doors of the vehicle and enhancing user experience.

Another object of the present utility model is to provide a vehicle in which the piezoelectric sound emitting assembly can be disposed in a wet area of the door adjacent to the skin panel, and the cable is connected to the door cable by bypassing the sealing layer of the door, thereby being more suitable for sound emission toward the outside of the door.

Another object of the present utility model is to provide a vehicle in which a piezoelectric sounding assembly can be fixed to a skin plate of a vehicle door while avoiding a noise reduction device and/or a collision avoidance device, thereby preventing the noise reduction device and the collision avoidance device from affecting the auditory effect of the piezoelectric sounding assembly.

Another object of the present utility model is to provide a vehicle in which a piezoelectric sound emitting assembly can be disposed in a hollow interlayer between an outer skin and an inner skin of a roof of the vehicle, thereby providing a more stereoscopic hearing effect and enhancing a user experience using the roof of the vehicle.

Another object of the present utility model is to provide a vehicle in which the piezoelectric sound emitting assembly can be disposed on the surface of the roof trim panel facing the roof skin panel and/or the surface of the inner shade panel of the sunroof structure facing the outer light transmitting panel thereof so as to be more suitable for sound emission toward the underside of the roof.

It is another object of the present utility model to provide a vehicle in which the piezoelectric sounding assembly can be disposed at the vehicle seat, thereby providing a mono or multi-channel audible effect with one or more seats of the vehicle and enhancing the user experience.

Another object of the present utility model is to provide a vehicle in which a piezoelectric sounding component can be disposed on an inner surface of a seat back plate, an inner surface and/or an outer surface of a seat cushion floor of a seat, so as to provide a mono-or multi-channel hearing effect by using one or more portions of the seat and enhance experience of a corresponding user.

Another object of the present utility model is to provide a vehicle in which a piezoelectric sounding assembly can be provided on an inner surface of a headrest back plate of a seat headrest, thereby providing a close range acoustic effect using the seat headrest and enhancing an experience feeling of a corresponding user.

Another object of the present utility model is to provide a vehicle in which a piezoelectric sounding assembly can be provided on an upper surface of a vehicle floor, thereby providing a more stereoscopic hearing effect using the vehicle floor and enhancing a user experience.

Another object of the present utility model is to provide a vehicle in which a piezoelectric sounding assembly can be provided in an armrest box between a plurality of adjacent seats of the vehicle, thereby providing a richer auditory effect and enhancing a user experience using the armrest box of the vehicle.

Another object of the present utility model is to provide a vehicle in which a piezoelectric sounding assembly can be disposed between a bumper case and an energy absorbing device of a vehicle bumper, thereby providing a richer auditory effect and enhancing a user experience using a front bumper and/or a rear bumper of the vehicle.

Another object of the present utility model is to provide a vehicle in which a piezoelectric sounding assembly can be attached to the bumper so as to avoid functional areas such as a guide grille area, a license plate area, a radar sensor area, etc., thereby avoiding affecting the normal operation of the functional areas.

Advantages and features of the present utility model may be fully apparent from the following detailed description and may be learned by the practice of the exemplary embodiments as set forth hereinafter.

An aspect of the present utility model provides a vehicle including: the vehicle comprises a vehicle body, a connecting mechanism and a piezoelectric sounding component; wherein the vehicle body comprises one or more preset parts; the piezoelectric sounding assembly is fixed to the preset portion of the vehicle body via the connecting mechanism, the piezoelectric sounding assembly including: a substrate; the piezoelectric sheets are respectively arranged on the front side and the back side of the substrate, and are subjected to elongation deformation or shrinkage deformation in the horizontal plane where the substrate is under the action of an external electric field so as to generate vibration vertical to the horizontal plane; the connecting mechanism at least comprises a first connecting component, the first connecting component is arranged on the substrate on two sides of the piezoelectric sheet and located on the front face in the deformation direction of the piezoelectric sheet, the first connecting component transmits vibration, a space exists between the first connecting component and the piezoelectric sheet in the deformation direction, and the size of the space is related to the fact that the piezoelectric sounding component is fixed to the preset part of the vehicle body.

According to one embodiment of the present utility model, the vehicle body is constituted by an outer shell plate, an inner trim plate, and a vehicle body component attached to the inner trim plate; the piezoelectric sounding assembly is fixed to a surface of the casing plate facing the vehicle interior via the connection mechanism; and/or the piezoelectric sounding component is fixed to a surface of the inner decorative plate facing the outside of the vehicle via the connecting mechanism; and/or the piezoelectric sounding assembly is fixed to the vehicle body assembly via the connection mechanism.

According to one embodiment of the present utility model, the piezoelectric sounding assembly is directly fixed to the preset portion of the vehicle body through the first connection assembly to transmit the vibration to the exterior skin, the interior trim panel, or the vehicle body assembly.

According to an embodiment of the present utility model, the connection mechanism further includes a sound amplifying assembly and a second connection assembly, the first connection assembly connecting the base plate and the sound amplifying assembly to transmit the vibration to the sound amplifying assembly, the sound amplifying assembly being fixed to the exterior shell plate, the interior trim plate, or the vehicle body assembly via the second connection assembly.

According to one embodiment of the present utility model, the preset portion includes one or more of a front bumper, a rear bumper, a door, a roof, a chassis, an instrument desk, and a seat, and a piezoelectric sounding assembly adapted for low frequency sounding is fixed to at least one of the roof, the chassis, and the seat; and/or a piezoelectric sounding component adapted for medium-high frequency sounding is fixed to at least one of the front bumper, the rear bumper, the door, the roof, the chassis, the instrument desk, and the seat.

According to one embodiment of the utility model, the preset portion comprises a door of the vehicle, the door further comprising a first hollow interlayer between the outer skin and the inner skin, the connection mechanism and the piezoelectric sounding assembly being arranged in the first hollow interlayer, wherein the piezoelectric sounding assembly is fixed to a first surface of the outer skin facing the inner skin and/or a second surface of the inner skin facing the outer skin via the connection mechanism; the connecting mechanism further comprises a first connecting cable, wherein the first connecting cable is arranged along the edge of the first hollow interlayer, and the first connecting cable is integrated with a door cable of the door and then led out of the door so as to connect the piezoelectric sounding component to a first driving circuit located outside the door.

According to one embodiment of the utility model, the first hollow interlayer further comprises a dry area adjacent to the interior trim panel and a wet area adjacent to the outer skin panel, the dry area and the wet area being spaced apart by a sealing layer, the first connecting cable connecting the piezoelectric sounding assembly secured to the first surface and bypassing the sealing layer to integrate the door cable.

According to an embodiment of the utility model, a noise reduction device and/or a collision avoidance device is further provided in the first hollow interlayer, and the piezoelectric sound emitting assembly is fixed to the first surface avoiding the noise reduction device and/or the collision avoidance device.

According to one embodiment of the utility model, the preset portion comprises a roof of the vehicle, the roof further comprising a second hollow interlayer between the outer skin and the inner skin, the connection mechanism and the piezoelectric sounding assembly being arranged in the second hollow interlayer, wherein the piezoelectric sounding assembly is fixed to a third surface of the inner skin facing the outer skin via the connection mechanism; the connecting mechanism further comprises a third connecting cable, wherein the third connecting cable is led out of the roof after the roof cable of the roof is integrated in the second hollow interlayer, so that the piezoelectric sounding assembly is connected to a second driving circuit positioned outside the roof.

According to one embodiment of the utility model, the central area of the roof comprises a sun roof structure comprising an outer light-transmitting panel and/or an inner light-shielding panel, the outer light-transmitting panel being flush with the outer skin panel, the inner light-shielding panel being retractable into the second hollow interlayer; the vehicle further comprises a third piezoelectric sounding component and a corresponding third connecting mechanism, wherein the third piezoelectric sounding component is arranged on the skylight structure and is fixed to the fourth surface, facing the outer-layer light-transmitting plate, of the inner-layer light-shielding plate through the third connecting mechanism.

According to one embodiment of the utility model, the vehicle body assembly comprises a seat of the vehicle, and the connection mechanism further comprises a fourth connection cable which is led out of the seat after being integrated with a seat cable of the seat to connect the piezoelectric sounding assembly to a third driving circuit located outside the seat.

According to one embodiment of the utility model, the piezoelectric sounding assembly is fixed to an inner surface of a seat back plate of the seat, an inner surface of a seat cushion pan of the seat and/or an outer surface of a seat cushion pan of the seat via the connection mechanism.

According to one embodiment of the utility model, the seat further comprises a headrest disposed above a seat back plate of the seat via a connection pipe, the piezoelectric sounding assembly is further fixed to an inner surface of the headrest back plate of the headrest via the connection structure, and the fourth connection cable is led out of the headrest via the connection pipe, and the seat cable is integrated again.

According to one embodiment of the utility model, the seat is attached to a floor of the vehicle, the piezoelectric sounding assembly is further fixed to an upper surface of the floor via the connection mechanism, and the fourth connection cable is integrated with the seat cable outside the seat and extends along an upper surface and/or a lower surface of the floor to connect the third driving circuit.

According to one embodiment of the present utility model, the vehicle body assembly includes an armrest box of the vehicle, the armrest box being disposed between adjacent two seats of the vehicle, the piezoelectric sounding assembly being fixed to the armrest box via the connection mechanism.

According to one embodiment of the utility model, the vehicle body assembly comprises the bumper, the bumper comprises a bumper shell and an energy absorbing device, and the connecting mechanism and the piezoelectric sounding assembly are arranged between the bumper shell and the energy absorbing device; the connection mechanism further includes a fifth connection cable, wherein the fifth connection cable is attached to the bumper, and the piezoelectric sounding assembly is connected to a fourth driving circuit via the fifth connection cable.

According to one embodiment of the utility model, the bumper housing comprises at least one functional area of a guide grid area, a license plate area and a radar sensor area, and the piezoelectric sounding component is attached to the bumper so as to avoid the functional area.

Drawings

The above features and advantages of the present utility model will be better understood after reading the detailed description of embodiments of the present disclosure in conjunction with the following drawings. In the drawings, the components are not necessarily to scale and components having similar related features or characteristics may have the same or similar reference numerals.

Fig. 1 shows a schematic structural view of a vehicle provided according to an aspect of the present utility model.

Fig. 2 is a schematic structural diagram of a piezoelectric sounding assembly and a connection mechanism according to an embodiment of the present utility model.

Fig. 3 is a top view of a front structure of a substrate of a piezoelectric sounding assembly according to an embodiment of the present utility model.

Fig. 4 is a top view of a front structure of a substrate of a piezoelectric sounding assembly according to another embodiment of the present utility model.

Fig. 5 is a schematic structural diagram of a piezoelectric sounding assembly and a connection mechanism according to another embodiment of the present utility model.

Fig. 6A, 6B, and 6C illustrate different flatness of the outer skin, the inner trim, and the body assembly to which the piezoelectric sound emitting assembly is secured, respectively, in accordance with an embodiment of the present utility model.

Fig. 7 illustrates a schematic diagram of a door portion of a stationary piezoelectric sound emitting assembly provided in accordance with an embodiment of the utility model.

Fig. 8 illustrates a schematic view of a door portion of a stationary piezoelectric sound emitting assembly provided in accordance with another embodiment of the utility model.

Fig. 9 illustrates a schematic cross-sectional view of a door portion of a stationary piezoelectric sounding assembly provided in accordance with an embodiment of the present utility model.

Fig. 10 is a schematic diagram illustrating a plurality of preset parts of a fixed piezoelectric sounding assembly according to an embodiment of the present utility model.

Fig. 11 illustrates a schematic view of a bumper for a stationary piezoelectric sounding assembly according to an embodiment of the present utility model.

Fig. 12 illustrates a schematic view of a roof of a stationary piezoelectric sounding assembly provided in accordance with an embodiment of the present utility model.

Reference numerals

100. Vehicle with a vehicle body having a vehicle body support

110. Vehicle body

200. Piezoelectric sounding assembly

210. Substrate board

221. 222 piezoelectric sheet

310. First connecting assembly

320. Second connecting assembly

330. Sound amplifying device

400. Vehicle door

410. Shell plate

411. 421 inner surface

412. 422 flat region

420. Interior trim panel

430. Anti-collision device

440. Noise reduction device

450. Uneven area

460. Metal separator

461. Wire (C) Beam hole

470. Plastic film

471. Wire bundle hole

480. Connecting cable

490. Sound-absorbing cotton

510. Front bumper

520. Roof of vehicle

530. Instrument desk

540. Chair seat

541. Chair back board

542. Cushion bottom plate

543. Headrest for head

544. 545, 546 amplifying plate or amplifying chamber

620. Energy absorber

630. Connecting mechanism

711 to 714 roof area

720. Sunroof area

Detailed Description

The utility model is described in detail below with reference to the drawings and the specific embodiments. It is noted that the aspects described below in connection with the drawings and the specific embodiments are merely exemplary and should not be construed as limiting the scope of the utility model in any way.

The following description is presented to enable one skilled in the art to make and use the utility model and to incorporate it into the context of a particular application. Various modifications, as well as various uses in different applications will be readily apparent to persons skilled in the art, and the generic principles defined herein may be applied to a wide range of embodiments. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

In the following detailed description, numerous specific details are set forth in order to provide a more thorough understanding of the utility model. It will be apparent, however, to one skilled in the art that the utility model may be practiced without limitation to these specific details. In other instances, well-known structures and devices are shown in block diagram form, rather than in detail, in order to avoid obscuring the present utility model.

The reader is directed to all documents and documents filed concurrently with this specification and open to public inspection with this specification, and the contents of all such documents and documents are incorporated herein by reference. All the features disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Thus, unless expressly stated otherwise, each feature disclosed is one example only of a generic set of equivalent or similar features.

Note that where used, the designations left, right, front, back, top, bottom, forward, reverse, clockwise, and counterclockwise are used for convenience only and do not imply any particular orientation of securement. In fact, they are used to reflect the relative position and/or orientation between the various parts of the object. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Note that, where used, further, preferably, further and more preferably, the brief description of another embodiment is made on the basis of the foregoing embodiment, and further, preferably, further or more preferably, the combination of the contents of the rear band with the foregoing embodiment is made as a complete construction of another embodiment. A further embodiment is composed of several further, preferably, still further or preferably arrangements of the strips after the same embodiment, which may be combined arbitrarily.

As described above, the present utility model provides a vehicle using a piezoelectric sounding assembly as a vehicle-mounted speaker, and the vehicle provided by the present utility model will be understood with reference to fig. 1 to 8.

Referring first to fig. 1, a vehicle 100 according to the present utility model includes a vehicle body and at least one piezoelectric sounding assembly 200. The vehicle body is composed of an outer shell plate, an inner decorative plate and a vehicle body component attached to the inner decorative plate. The piezoelectric sounding assembly 200 is secured to one or more predetermined locations of the vehicle body by a connection mechanism. As shown in fig. 1, the preset location may be one or more of a front bumper, a rear bumper, a door, a roof, a chassis, an instrument desk, a seat, a armrest box.

Please understand the piezoelectric sounding assembly 200 provided in the present utility model in conjunction with fig. 2. As shown in fig. 2, the piezoelectric sounding assembly 200 includes a substrate 210, and piezoelectric sheets 221 and 222 disposed on the front and back sides of the substrate 210 and 210, respectively. For convenience of description, the side of the substrate 210 connected to the vehicle body is defined as the front side.

Piezoelectric materials are selected for the piezoelectric sheets 221 and 222 in the above embodiments. Piezoelectric materials are also classified into inorganic piezoelectric materials, organic piezoelectric materials, and piezoelectric composite materials. Inorganic piezoelectric materials are also classified into piezoelectric crystals and piezoelectric ceramics. Piezoelectric crystals are generally piezoelectric single crystals, and are crystals grown according to the long-range order of the crystal space lattice. This crystal structure has no symmetry center and thus piezoelectricity. Such as crystals (quartz crystals), lithium gallate, lithium germanate, titanium germanate, lithium iron transistor niobate, lithium tantalate, etc. Piezoelectric ceramics are generally referred to as piezoelectric polycrystals. Piezoelectric ceramics are polycrystalline bodies obtained by mixing, molding, and sintering at high temperature with raw materials of essential components, and by irregularly integrating fine grains obtained by solid phase reaction between powder particles and sintering process, such as: barium titanate BT, lead zirconate titanate PZT, modified lead zirconate titanate, lead metaniobate, lead barium lithium niobate PBLN, modified lead titanate PT, and the like.

Organic piezoelectric materials are also known as piezoelectric polymers, such as polyvinylidene fluoride (PVDF) (thin film) and other organic piezoelectric (thin film) materials typified by it. The materials and the materials are flexible, low in density, low in impedance, high in piezoelectric constant (g) and the like, and have the advantages of attracting attention of the people and developing very rapidly. The composite piezoelectric material is a piezoelectric composite material formed by inorganic piezoelectric ceramics and organic polymer resin, and has the performances of the inorganic piezoelectric material and the organic piezoelectric material.

It will be appreciated that piezoelectric materials have a piezoelectric effect, particularly an inverse piezoelectric effect. Here, the inverse piezoelectric effect means that the piezoelectric sheet is capable of mechanically deforming when a voltage is applied. Specifically, if an electric field having the same direction as that of polarization is applied to the piezoelectric sheet, the effect of the electric field increases the polarization intensity. At this time, the distance between the positive and negative binding charges in the piezoelectric sheet also increases, that is, the piezoelectric sheet undergoes elongation deformation in the polarization direction. Similarly, if the direction of the applied electric field is opposite to the polarization direction, the piezoelectric sheet is deformed by shrinkage along the polarization direction.

In the present utility model, the piezoelectric sheet 221 generates elongation deformation in the horizontal plane (XY plane in fig. 3) where the substrate is located under the action of the electric field applied in the same direction as the polarization direction, and the piezoelectric sheet 222 generates shrinkage deformation in the horizontal plane (XY plane in fig. 3) where the substrate is located under the action of the electric field applied in the opposite direction to the polarization direction, so that the expansion deformation of the piezoelectric sheets 221, 222 drives the substrate to generate vibration perpendicular to the horizontal plane (XY plane), i.e., vibration in the Z direction.

It can be understood that by adjusting the polarization directions of the piezoelectric sheets 221 and 222 and adjusting the applied electric fields applied to the piezoelectric sheets 221 and 222, the piezoelectric sheets 221 and 222 can be set to deform inversely under the action of the applied electric fields, so as to effectively superimpose and drive the deformation generated by the substrate and enhance the vibration in the Z direction.

Further, in an embodiment of the present utility model, in order to amplify vibration to generate sound with sufficient volume, when the piezoelectric sounding assembly 200 is fixed to the vehicle body, the piezoelectric sounding assembly 200 may be directly fixed to a preset portion of an outer shell plate, an inner decoration plate or a vehicle body assembly constituting the vehicle body 110 through the first connection assembly 310 to transmit the vibration to the outer shell plate, the inner decoration plate or the vehicle body assembly, that is, to drive the vehicle body 110 to directly vibrate and sound, and various plates constituting the vehicle body 110 are multiplexed into a sound amplifying plate. That is, in this embodiment, the connection mechanism includes the first connection member 310, and the first connection member 310 needs to function as a fixed connection and to transmit the vibration generated by the piezoelectric sheets 221, 222.

In another embodiment, the substrate 210 of the piezoelectric sounding assembly 200 is connected to the speaker assembly 330 dedicated for speaker through the first connecting assembly 310, and then is fixed to the preset portion of the vehicle body 110 through the second connecting assembly after generating sound with sufficient volume. That is, in this embodiment, the connection mechanism includes the first connection member 310, the sound amplifying member 330, and the second connection member, wherein the first connection member 310 mainly functions to transmit the vibration generated by the piezoelectric patches 221, 222, and the second connection member functions to fix the piezoelectric sounding member 200 to the vehicle body.

In order to shorten the vibration transmission path as much as possible to reduce vibration loss during transmission, the first connection assembly 310 directly connects the base plate 210 of the piezoelectric sounding assembly 200 and the vehicle body 110 or the speaker assembly 330. First attachment assembly 310 may secure base plate 210 to body 110 or loudspeaker assembly 330 based on various existing or yet to be attached means of bonding, riveting, welding, clamping, and the like. The first connection component 310 may be a connection portion of the connection manner described above, such as glue in bonding, rivet in riveting, welding point in welding, buckle in clamping, and the like. Further, in order to reduce vibration transmission loss, when the connection is performed by using the snap-in manner, a buffer structure may be provided at the mating portion of the snap-in.

In order to ensure that the vibration of the piezoelectric sheet 221 is not affected by the vehicle body 110 or the amplifying assembly 330 which plays a role of amplifying, it is necessary to have a sufficient vibration space between the vehicle body 110 or the amplifying assembly 330 and the piezoelectric sheet 221, and therefore, the first connection assembly 310 needs to form the first gap a between the piezoelectric sheet 221 and the vehicle body 110 or the amplifying assembly 330.

The size of the first gap a is related to the thickness (the dimension in the Z direction) of the first connecting component 310, and the thickness of the first connecting component 310 is greater than the maximum amplitude of the vibration of the piezoelectric sheets 221 and 222 driving the substrate 210. Further, the thickness of the first connecting component 310 is greater than the maximum value of the vibration of the car body 110 or the loudspeaker component 330 in the Z-axis direction, so that the vibration of the car body 110 or the loudspeaker component 330 and the vibration of the substrate driven by the piezoelectric sheet 221 will not affect each other.

Further, in order to transmit as much vibration as possible, it is necessary to arrange the first connection member 310 along the deformation direction of the piezoelectric sheet. Please understand in conjunction with fig. 3 and 4. As described above, the piezoelectric material of the piezoelectric sheet has a piezoelectric effect, and the deformation direction of the piezoelectric material is an inherent property of the piezoelectric material, which is associated with the polarity direction of the piezoelectric material. As shown in fig. 3 and 4, if the polarity direction of the piezoelectric material is the X direction, the piezoelectric sheet is extended or contracted in the X direction, and in order to transmit the vibration generated by the extension or contraction in the X direction to the vehicle body 110 or the speaker unit 330, it is necessary to provide the first connection unit 310 in the X direction, that is, to provide the first connection units 310 on the left and right sides of the piezoelectric sheet 221 in fig. 2.

The spacing b between the first connecting member 310 and the piezoelectric patch in the deformation direction (X) affects the final sound emission performance of the piezoelectric sound emitting device. Specifically, the sound emission performance is related to the sensitivity of the first connection assembly 310 to transmit vibration, and the sensitivity is inversely proportional to the size of the interval b, that is, the larger the interval b is, the worse the sensitivity of vibration is. This is because, in fig. 2, the vibrations at the left and right ends of the substrate 210 are transmitted from the middle region where the piezoelectric sheets 221 and 222 are located, the longer the distance b is, the greater the vibration transmission path to the two ends is (the smaller the amplitude is), and even after the distance b is too large, the mechanical energy generated by the deformation of the piezoelectric sheet 221 cannot be transmitted to the first connection assembly 310, and thus the sound cannot be effectively amplified. Therefore, the maximum value of the interval b needs to be set so that the first connection assembly 310 can effectively transmit the Z-axis vibration of the substrate 210 to the vehicle body 110 or the speaker assembly 330.

In an effective range in which the distance b can effectively transmit vibration of the first connection assembly 310, the larger the distance b means that the larger the distance of the first connection assembly 310 on the vehicle body 110 or the amplifying assembly 330 is, the larger the area capable of driving the vehicle body 110 or the amplifying assembly 330 to vibrate is, the more sufficient the vehicle body 110 or the amplifying assembly 330 vibrates, and the better the low-frequency performance of the sound generated by the vibration of the vehicle body 110 or the amplifying assembly 330 is.

In an embodiment where the piezoelectric sheet and the substrate are both rectangular, the minimum value of the spacing b may be 0, i.e., the first connection assembly 310 is disposed closely to the piezoelectric sheet 221 in the X-direction. However, since the body 110 or the amplifying assembly 330 has a certain rigidity coefficient, if the distance b is smaller, the distance between the first connecting assembly 310 and the body 110 or the amplifying assembly 330 is smaller, and the area capable of driving the amplifying assembly 330 to vibrate occupies a small part of the area of the body 110 or the amplifying assembly 330, which means that even if the amplitude of the substrate 210 transferred by the first connecting assembly 310 is larger, the body 110 or the amplifying assembly 330 still cannot be sufficiently driven by the first connecting assembly 310, the generated sound is tighter, and the low-frequency performance is poor.

Therefore, the pitch b needs to be set within a suitable range. The suitable range is directed here to the distance range in which vibrations can be transmitted effectively, the maximum value of which is associated with the area of the piezoelectric plate. The larger the area of the piezoelectric sheet, the larger the mechanical energy that can be generated, and the larger the maximum value of the distance of the first connection member 310 from the piezoelectric sheet 221. Conversely, the smaller the area of the piezoelectric sheet, the smaller the mechanical energy that can be generated, and the smaller the maximum distance of the first connection member 310 from the piezoelectric sheet 221.

Conversely, in a proper range, the smaller the interval b is, the more complete the vibration transmission is, the better the sound details are, and the higher the high-frequency performance of the sound generating device is. In an embodiment where the piezoelectric sheet and the first connection assembly are both rectangular, the spacing b may be 0, i.e., as shown in fig. 4, the first connection assembly 310 is disposed against the piezoelectric sheet 221 in the X-direction.

The difference of the first connection assembly 310 along the deformation direction of the piezoelectric sheet and the interval between the piezoelectric sheets affects the path of the first connection assembly 310 transmitting vibration, thereby being capable of affecting the sounding performance of the piezoelectric sounding assembly. When the piezoelectric sounding components are fixed on one or more of a front bumper, a rear bumper, a door, a roof, a chassis, an instrument desk, and a seat of the vehicle, sounding performance of the piezoelectric sounding components located at different preset positions can be adjusted by adjusting a distance between the first connecting component 310 in the connecting mechanism and the piezoelectric sheet along a deformation direction of the piezoelectric sheet.

In particular, a piezoelectric sounding assembly adapted for low frequency sounding is secured to at least one of the roof, chassis and seat. A piezoelectric sounding assembly adapted for medium-high frequency sounding is secured to at least one of the front bumper, rear bumper, door, roof, chassis, instrument desk and seat.

The size of the interval between the piezoelectric sheet of the piezoelectric sounding component and the first connecting component suitable for low-frequency sounding is in a first preset range, and the size of the interval between the piezoelectric sheet of the piezoelectric sounding component suitable for medium-high-frequency sounding and the first connecting component is in a second preset range. As previously analyzed, the values in the first preset range are greater than the values in the second preset range.

As for the connection mechanism, the connection mechanism includes at least the first connection assembly 310 directly disposed on the substrate 210 according to the above description. In one embodiment, the piezoelectric sounding assembly 200 is directly fixed to a predetermined portion of an exterior skin, an interior trim panel or a vehicle body assembly constituting the vehicle body 110 through the first connection assembly 310, to transmit vibration to the shell plate, the inner decorative plate or the car body assembly, that is, to drive the car body 110 to directly vibrate and sound, and to multiplex various plates constituting the car body 110 into a sound amplifying plate.

In order to ensure that vibration of the piezoelectric patches 221, 222 is more completely transferred to various plates constituting the vehicle body, the piezoelectric sounding assembly 200 needs to be fixed to a flat area on the outer skin, the inner plaque or the vehicle body assembly, the flatness of which is greater than a preset threshold.

Fig. 6A-6C are incorporated herein to provide an understanding of the various flatness of the skin, trim panels, and body components. Fig. 6A-6C each show a side view of various panels. As shown in fig. 6A, the side view of the sheet is straight, which means that the flatness of the sheet shown in fig. 6A is high. As shown in fig. 6B, the side view of the sheet is curved, which means that the flatness of the sheet shown in fig. 6B is poor, and the sheet shown in fig. 6B has a curvature. Whereas in fig. 6C, the side view of the sheet is irregularly shaped, meaning that the sheet as shown in fig. 6C has poor flatness. To ensure that vibration of the piezoelectric sounding assembly can be transferred more completely, the piezoelectric sounding assembly should be mounted on a plate material as shown in fig. 6A, but not on a plate material as shown in fig. 6B and 6C.

In order to ensure the normal sound production of the piezoelectric sound production assembly, the utility model also provides a connection mode, namely the connection mechanism further comprises a sound amplifying assembly and a second connection assembly, the problem that the vehicle body plate with the unsatisfactory flatness cannot form enough vibration is solved by the sound amplifying assembly, and the specific implementation of the piezoelectric sound production assembly and the connection mechanism is understood by referring to fig. 5.

In order to solve the problems that the flatness of the vehicle body plate is insufficient and sufficient vibration cannot be formed, the utility model provides a sound amplifying assembly 330 special for sound amplifying, wherein the piezoelectric sound generating assembly 200 is connected to the sound amplifying assembly 330 through a first connecting assembly 310 to realize effective sound amplifying and generating, and then is fixed to a preset part of the vehicle body plate with uneven flatness through a second connecting assembly 320.

The speaker assembly 330 includes a speaker plate or speaker chamber. It will be appreciated that the specific examples of the shape of the loudspeaker assembly 300 described above should not unduly limit the loudspeaker assembly. The amplifying board realizes amplifying by enlarging the vibration area. The sound amplifying cavity is a shell structure with a cavity, and vibration generated by the piezoelectric sound generating assembly enters the sound amplifying cavity and can be collided and overlapped in the sound amplifying cavity, so that sound amplifying is realized.

More preferably, in order to secure the sound amplifying effect, the area of the surface of the sound amplifying plate or the sound amplifying chamber in contact with the first connection member 310 is larger than the area of the piezoelectric sheet, so that the vibration area can be effectively increased, and the sound generated thereby can be increased.

In the above embodiments, the materials of the different speaker assemblies may be different in vibration characteristics, the resulting sound effects will also vary. In a preferred embodiment, metal, plastic, wood, etc. are selected as the material of the loudspeaker element. In particular, the metals described above include, but are not limited to, pure metals, alloys. The plastic refers to existing or to-be-existing high molecular polymers including, but not limited to, polyethylene (PE), polypropylene (PP) and polyvinyl chloride (PVC), and the wood material can be solid wood or synthetic boards containing wood fibers, such as wood plastic boards, wood artificial boards, solid wood particle compression boards and density fiber boards. The sounding performance of the piezoelectric sounding components at different preset positions can also be adjusted by adjusting the materials of the sound amplifying components connected with the piezoelectric sounding components.

After the piezoelectric sounding assembly 200 has been connected to the speaker assembly 330 through the first connection assembly 310, the piezoelectric sounding assembly 200 may be fixed to the vehicle through the second connection assembly 320 in various different forms, in the embodiment shown in fig. 5, if there is enough plate area in the preset portion of the vehicle to fix the speaker assembly 330, the speaker assembly 330 may be directly fixed to the vehicle body 110 in the preset portion through various existing or available connection manners such as bonding, riveting, welding, clamping, etc., where the second connection assembly 320 is a connection portion of the connection manners, for example, glue in bonding, riveting in riveting, welding point in welding, clamping buckle in clamping, etc.

The specific mounting location of the piezoelectric sounding assembly of the present utility model is further understood with reference to fig. 7. First, it will be understood by those skilled in the art that the vehicle body is not a single-layer plate-like structure and may be composed of an outer shell plate, an inner trim plate, and a vehicle body component (seat, bumper, instrument desk, armrest box, etc.) attached to the inner trim plate.

Taking the example of the vehicle door shown in fig. 7 as an example, the vehicle door 400 has a structure with a certain thickness and a sandwich layer, and is formed by an outermost shell plate 410 and an inner decorative plate 420 from outside to inside, and a first hollow sandwich layer is reserved between the two.

Specifically, the exterior skin 410 has an outer surface facing the outside of the vehicle (the side that the user sees outside the vehicle) and an inner surface 411 facing the inside of the vehicle (not visible to the naked eye in the first hollow sandwich of the door 400), and the interior trim panel has an outer surface facing the inside of the vehicle (the side that the user sees inside the vehicle) and an inner surface 421 facing the outside of the vehicle (not visible to the naked eye in the first hollow sandwich of the door 400).

In the present utility model, if the piezoelectric sounding assembly 200 is fixed to the casing plate 410, it is fixed to the first surface of the casing plate facing the inside of the vehicle (not visible to the naked eye) via the connection mechanism. Conversely, if the piezoelectric sounding assembly 200 is fixed to the interior trim panel 420, it is fixed to the second surface of the interior trim panel facing the exterior of the vehicle (not visible to the naked eye) via the connection mechanism. This is for aesthetic reasons. On the other hand, it is desirable that the piezoelectric sounding assembly fixed to the vehicle skin is more advantageous for sounding to the outside of the vehicle, while the piezoelectric sounding assembly fixed to the inner surface of the vehicle skin is capable of driving the skin to vibrate and sound from the inside of the vehicle to the outside, and the path of sounding to the outside is short. Similarly, it is desirable that the piezoelectric sounding component fixed on the vehicle interior trim panel is more favorable for sounding into the vehicle, and the piezoelectric sounding component fixed on the inner surface of the vehicle interior trim panel can drive the interior trim panel to vibrate and sound from the outside of the vehicle inwards, so that the path of sounding is short.

Referring collectively to fig. 7 and 8, the first intermediate layer of the door 400, which is formed by the outer skin 410 and the inner trim 420, is provided with functional components such as a window glass, a window lift mechanism, a noise reducer 440, a bump guard 430, and the like. As described above, if the piezoelectric sounding component 200 of the present utility model is directly connected to the plate of the vehicle body to drive the plate to vibrate and sound, the piezoelectric sounding component needs to be disposed in a flat area of the plate. Accordingly, it is desirable to avoid the bump guard 430, the noise reducer 440, and the uneven region 450 at the inner surface 411 of the skin 410, and to define the uneven region 412 for directly securing the piezoelectric sounding assembly 200. Similarly, it is also desirable to define a flat area 422 on the inner surface 421 of the interior trim panel 420 for direct attachment of the piezoelectric sounding assembly 200. Further, the connection mechanism may further include a connection cable in addition to the first connection assembly 310 and the second connection assembly 320. The connection cable may be first connected to the piezoelectric sounding assembly 200 and disposed along the edge of the first hollow interlayer, and then the door cable of the door functional components such as the window glass, the window glass lifting mechanism, the noise reducer 440, the anti-collision device 430, etc. is first integrated, and then led out of the door 400, so as to connect the piezoelectric sounding assembly 200 to the first driving circuit located outside the door 400.

Further, the first intermediate layer of the door consisting of the outer skin 410 and the inner skin 420 may also preferably be provided with an isolating layer for dividing the intermediate layer into a wet area in the area of the outer skin 410 (an area that may be exposed to rain) and a dry area in the area of the inner skin 420. To setting up the piezoelectricity sound production subassembly at the wet district of vehicle, can play the waterproof effect through setting up waterproof construction on piezoelectricity sound production subassembly. Accordingly, the connection cable may be connected to the piezoelectric sounding assembly fixed to the inner surface 411 of the outer skin of the wet area, and bypass the sealing layer, and then integrate the door cable of the door functions such as the window glass, the window glass lifting mechanism, the noise reduction device 440, the anti-collision device 430, and the like, so as to connect the piezoelectric sounding assembly 200 to the first driving circuit located outside the door 400. Referring specifically to fig. 9, in a door structure including a wet area and a dry area, the isolation layer may be implemented by using a metal partition 460 coated with a plastic film 470, wherein an outer shell plate 410 rivets the metal partition 460 to form the wet area of the door 400, and an inner panel 420 connects the metal partition 460 to form the dry area of the door 400. The piezoelectric sounding assembly 200 may be fixed on an inner surface of the skin plate 410 of the wet area to sound outside the vehicle using the skin plate 410. The connection cable 480 may be connected to the piezoelectric sounding assembly 200 at a first end thereof and may extend through the connection edge of the casing plate 410 and the metal partition 460 (i.e., the outer edge of the wet area) to the wire harness hole 461 provided at the edge of the metal partition 460, pass through the wire harness hole 461 to extend to the wire harness hole 471 of the plastic film 470, and then pass through the wire harness hole 471 to reach the dry area of the vehicle door 400. Here, the harness holes 471 of the plastic film 470 may be filled with a sealant for preventing water of the wet area from entering the dry area.

Further, a sound absorbing cotton 490 may be preferably provided between the interior panel 420 of the door 400 and the metal bulkhead 460 (i.e., dry area) for blocking transmission of sound inside and outside the vehicle. A second end of the connection cable 480 may integrate a door cable of the above-described door functions such as the window glass, the window glass lifter, the noise reducer 440, the anti-collision device 430, etc., between the sound absorbing cotton 490 and the metal separator 460 to connect the piezoelectric sounding assembly 200 to the first driving circuit located outside the vehicle door 400.

It should be noted that the first driving circuit may be integrated on the power amplifier driving board. Further, in order to improve the reliability of the connection cable, the substrate 210 of the piezoelectric sounding assembly 200 may be an insulating substrate. The outer surfaces of the piezoelectric sheets 221, 222 not in contact with the insulating substrate 210 may have a metal electrode layer. The connection cable may be welded to the metal electrode layer. Here, the metal electrode layer has a solder resist layer on a surface other than the solder joint formed by soldering the connection cable to protect the metal electrode layer. The surface of the welding spot formed by welding the connecting cable has a waterproof structure covering the welding spot so as to prevent the rainwater in the wet area from affecting the normal operation of the piezoelectric sounding assembly 200.

In addition, in an embodiment of the present utility model, the piezoelectric sounding assembly 200 may be just a piezoelectric vibrator sounding module (also referred to as a piezoelectric sounding exciter), and is supported and installed on the inner sides of the vehicle exterior panel 410 and the interior panel 420, and the vehicle interior panel and/or the exterior panel are driven to vibrate by self deformation vibration, so as to excite air sounding. Here, the piezoelectric sounding assembly 200 may further include a power amplifier module. The power amplifier module can select MCU control chip, MPU, DSP and other audio processing chip and is integrated on the power amplifier driving board.

Further, in one embodiment, each piezoelectric sounding assembly 200 may be provided with a corresponding power amplifier driving board (e.g., ECU) mounted nearby. In another embodiment, all the piezoelectric generating components 200 on the vehicle may be driven by a unified power amplifier driving board, where the power amplifier driving board may be disposed under a vehicle armrest box or in an integrated control position such as a vehicle dashboard. Typically, each piezoelectric sounding assembly 200 has an audio input port with a positive and negative pole, and its audio input voltage is derived from the power amplifier driver board.

Furthermore, the power amplifier driving board can be built in a car machine of a cabin, and also can be configured as an independent power amplifier driving board containing an MCU, a DSP and a power amplifier chip. If the independent power amplifier driving board needs to obtain the sound source signal of the cabin vehicle machine, the independent power amplifier driving board also supports the A2B audio bus capability and the CAN communication capability so as to keep the audio data interaction and the state interaction with the vehicle machine. Therefore, the independent power amplifier driving board needs to be additionally provided with an A2B transceiver chip and a CAN transceiver chip. Therefore, the piezoelectric sounding components 200 with different channels can be directly driven by the power amplifier driving plate integrated in the vehicle or the independent power amplifier driving plate.

In one embodiment of the present utility model, each piezoelectric sounding assembly 200 may be driven by a corresponding each power amplifier driving board. The power amplifier driving plate can be composed of chips such as MCU, DSP, A2B, CAN and the like, and can be arranged at any reasonable position of a trunk area in a cabin or a door of a vehicle.

In addition, the above-mentioned connection cable may be connected to the piezoelectric sounding assembly 200 first, then the door cable of each door functional component is integrated, and finally the door 400 is led out, so that the piezoelectric sounding assembly 200 is connected to a power amplifier module or a power amplifier driving board located at a position of a vehicle armrest box or a vehicle instrument panel, etc.

Further, the position of the a-pillar or the B-pillar of the vehicle can be preferably provided with a second piezoelectric sounding component for providing a richer hearing effect by using the a-pillar or the B-pillar of the vehicle and improving the user experience. The power amplifier module or the power amplifier driving board of the piezoelectric sounding assembly 200 may also be connected to the second piezoelectric sounding assembly, so as to share the power amplifier module or the power amplifier driving board with the second piezoelectric sounding assembly. The connecting cable of the second piezoelectric sounding component can be connected with the first piezoelectric component of the vehicle door 400 through the lead hose at the joint of the vehicle door 400 and the A column or the B column of the vehicle, and then the vehicle door cable of the vehicle door functional components such as the vehicle window glass, the vehicle window glass lifting mechanism, the noise reduction device 440, the anti-collision device 430 and the like is integrated, and then the second piezoelectric sounding component is connected to the power amplifier module or the power amplifier driving board positioned at the position of the lower part of the vehicle armrest box or the vehicle instrument panel and the like. Therefore, the utility model can save the space of the A column or the B column of the vehicle and reduce the installation difficulty of the second piezoelectric sounding component.

The mounting location of each piezoelectric sounding assembly in the present utility model is further understood with reference to fig. 10. As shown in fig. 10, the piezoelectric sounding assembly 200 provided in the present utility model can be mounted on one or more of a front bumper 510, a rear bumper (not shown), a roof 520, a chassis, an instrument desk 530, and a seat 540, in addition to a vehicle door 400.

Taking the example of a bumper structure as shown in fig. 11, the vehicle bumper structure includes a bumper housing (not shown), an energy absorbing device 620, and a piezoelectric sounding assembly 200 attached to the vehicle bumper structure by a connecting mechanism 630. The piezoelectric sounding assembly 200 is located between the bumper housing and the energy absorber 620 to provide a richer auditory effect and enhance the user experience with the front and/or rear bumpers of the vehicle. The connection mechanism 630 may be connected to a cable in addition to the first connection unit 310 and the second connection unit 320. The connection cable is attached to the vehicle bumper structure with a first end connected to the piezoelectric sounding assembly 200 and a second end connected to a fourth driving circuit external to the bumper. The fourth drive circuit can be integrated together with the power amplifier module on the power amplifier drive board.

Further, in an embodiment of the present utility model, the energy absorbing device 620 includes a first energy absorbing structure attached to the bumper fascia and/or a second energy absorbing structure attached to the vehicle body frame. The piezoelectric sounding assembly 200 may be attached to the inner surface of the bumper housing by a connection mechanism (not shown). At this time, the piezoelectric sounding assembly 200 is located between the bumper housing and the first energy absorbing structure. Alternatively, the piezoelectric sounding assembly 200 may be attached to the second energy absorbing structure by the connection structure 630. At this time, the piezoelectric sounding assembly 200 is located between the bumper housing and the second energy absorbing structure.

Still further, in response to the energy absorbing device 620 comprising both the first energy absorbing structure and the second energy absorbing structure, the piezoelectric sounding assembly 200 attached to the second energy absorbing structure may be attached to the second energy absorbing structure while avoiding the first energy absorbing structure, thereby avoiding the first energy absorbing structure from affecting the audible effect of the piezoelectric sounding assembly 200.

In addition, the connection mechanism 630 of the piezoelectric sounding assembly 200 attached to the second energy absorbing structure described above may also preferably include a sound amplifying assembly and a second connection assembly. As shown in fig. 5, the first connecting component 310 connects the substrate 210 and the sound amplifying component 330 to transmit vibration to the sound amplifying component 330, and after generating sound with sufficient volume, the sound amplifying component 330 is fixed to the second energy absorbing structure via the second connecting component 320. At this time, the substrate 210 may be positioned between the speaker assembly 330 and the second energy absorbing structure. By arranging the second connecting component 320, the sound amplifying component 330 and other connecting mechanisms 630 at the position of a bumper shell and other flat areas which are lack of proper installation or on a vehicle body component, the utility model can effectively solve the problems that the flatness of the vehicle body plate is insufficient and enough vibration cannot be formed, thereby realizing the installation of the piezoelectric sound generating component 200 by using the second connecting component 320, the sound amplifying component 330 and other connecting mechanisms 630 and improving the sound generating effect of the piezoelectric sound generating component 200.

Similarly, in other embodiments, those skilled in the art may also provide the connection mechanisms such as the second connection assembly 320 and the speaker assembly 330 at other positions on the vehicle where the flatness is insufficient and sufficient vibration cannot be formed, so as to achieve the installation of the piezoelectric sounding assembly 200 and improve the sounding effect of the piezoelectric sounding assembly 200.

Further, as described above, in order to ensure that vibration of the piezoelectric sheets 221, 222 can be more completely transmitted to various plates constituting the vehicle body, the piezoelectric sounding assembly 200 can be directly fixed to a flat area on the inner surface of the bumper case through the first connection assembly 310. The flatness of the flattened area should be greater than a preset threshold. Alternatively, the base plate 210 of the piezoelectric sounding assembly 200 is connected to the speaker assembly 330 of the connection mechanism through the first connection assembly 310, the vibration is transmitted to the speaker assembly 330 through the first connection assembly 310, and the speaker assembly 330 is fixed to the inner surface of the bumper housing through the second connection assembly 320 of the connection mechanism. At this time, the speaker assembly 330 may be located between the base plate 210 and the bumper case.

In addition, in an embodiment of the present utility model, the bumper housing may further include at least one functional area of a grill area, a license plate area, and a radar sensor area. At this time, the piezoelectric sounding assembly 200 may be attached to the vehicle bumper structure so as to avoid these functional areas, thereby avoiding the functional areas from affecting the auditory effect of the piezoelectric sounding assembly 200.

It will be appreciated that the arrangement of mounting the piezoelectric sounding assembly 200 in the front bumper area of a vehicle as shown in fig. 10 is but one non-limiting embodiment provided by the present utility model. Although not shown in fig. 10, the piezoelectric sounding assembly 200 may be similarly mounted in the rear bumper area for sounding to the rear outside of the vehicle. Further, since the front and rear bumper areas are generally provided with the license plate of the vehicle, the piezoelectric sounding assembly 200 may be disposed avoiding the license plate area in order to avoid causing resonance of the license plate. On the other hand, in the front bumper 510 region, if the vehicle is an oil vehicle, care should be taken to avoid the air intake of the oil vehicle.

In addition, the connection cable of the piezoelectric sounding assembly 200 attached to the front bumper structure of the vehicle may be combined with a cable of at least one of a lamp, a radar sensor, a camera, which are located at the head of the vehicle, and led out of the front bumper of the vehicle to be connected to an external fourth driving circuit. The connecting cable of the piezoelectric sounding component attached to the rear bumper structure of the vehicle can be combined with the cable of at least one of a car lamp, a radar sensor and a camera at the tail of the car, and led out of the rear bumper of the vehicle to be connected with an external fourth driving circuit.

Furthermore, in the embodiment shown in fig. 10, the piezoelectric sounding assembly 200 can also be mounted on the roof 520. Similar to the door structure, the roof 520 is also formed by an outer skin panel and an inner trim panel, which form a second hollow interlayer therebetween. The connection mechanism and the piezoelectric sounding assembly 20 are disposed in the second hollow interlayer, thereby providing a more stereoscopic hearing effect by using the roof 520 of the vehicle and enhancing the user experience.

Specifically, the piezoelectric sounding assembly 200 described above may be fixed to the third surface of the roof trim panel facing the roof skin panel via a connection mechanism to facilitate providing sound to the cabin interior. The connection mechanism may further include a connection cable in addition to the first connection assembly 310 and the second connection assembly 320. The first end of the connection cable is connected to the piezoelectric sounding assembly 200, and the second end thereof is led out of the roof 520 after integrating a roof lamp cable, an antenna cable, a sunroof cable, etc. of the roof 520 in a second hollow interlayer of the roof 520, so as to connect the piezoelectric sounding assembly 200 to a second driving circuit located outside the roof 20. Here, the second driving circuit may be integrated on the power amplifier driving board together with the power amplifier module.

As shown in fig. 12, in an embodiment of the present utility model, the piezoelectric sounding assembly 200 may be disposed in the second hollow interlayer of the roof 520 adjacent to the first region 711 of the front windshield of the vehicle and/or the second region 712 of the rear windshield of the critical vehicle, thereby providing a more stereoscopic hearing effect to the user from the front and/or the rear and enhancing the user experience.

Further, in the vehicle having the roof 520 provided with the sunroof, a part of the roof 520 is the sunroof region 720, and a part of the roof region other than the sunroof region 720 is required to receive the sunroof which is opened. Since the piezoelectric sounding assembly 200 provided at the roof 520 needs to sound into the vehicle, it can be provided at the third position in the second intermediate layer of the roof 520, that is, the upper surface of the inner panel of the roof 520 facing the outside of the vehicle, avoiding the sunroof from affecting the effect of the piezoelectric sounding assembly 200.

Alternatively, in another embodiment, for a sunroof structure comprising an outer light-transmitting panel and/or an inner light-shielding panel, the outer light-transmitting panel may be flush with the outer skin panel of the roof 520, while the inner light-shielding panel may collapse into the second hollow interlayer of the roof 520. In this way, the piezoelectric sounding component 200 and the corresponding connection mechanism can also be arranged on the skylight structure, so that a more stereoscopic hearing effect is provided for the user from the right above by utilizing the skylight structure, and the user experience is improved. Specifically, the piezoelectric sounding assembly 200 may be fixed to the surface of the inner light-shielding plate facing the outer light-transmitting plate via a corresponding connection mechanism, thereby providing a more stereoscopic hearing effect to the user with the inner light-shielding plate.

Further, in view of the anti-collision requirement of the roof 520, the surface of the roof trim facing the vehicle interior is generally covered with a cushion, which has an anti-collision effect on one hand and a certain sound absorbing effect on the other hand. In addition, a noise reduction device can be arranged between the inner decorative plate and the outer shell plate of the vehicle roof. In order not to affect the sound emitting effect of the piezoelectric sound emitting assembly 200, in the embodiment of the sunroof structure described above, the piezoelectric sound emitting assembly 200 may be disposed on the side of the interior trim panel (e.g., 713 to 716 in fig. 12) close to the sunroof as much as possible so that the sound is transmitted as much as possible.

As shown in fig. 5, the connection mechanism corresponding to the piezoelectric sounding assembly 200 mounted on the vehicle roof 520 may also include a speaker assembly 330, a first connection assembly 310, and a second connection assembly 320. The first connection element 310 connects the substrate 210 and the speaker element 330 to transmit vibrations to the speaker element 330. The sound amplifying assembly 330 is fixed to an inner visor of a roof trim or a roof skylight structure via the second connection assembly 320 to provide an upward sound via the roof trim or the inner visor.

Furthermore, in the embodiment shown in FIG. 10, the piezoelectric sounding assembly 200 can also be mounted to a vehicle instrument desk 530. Specifically, the piezoelectric sounding assembly 200 may be fixed to an inner surface of an interior panel of the instrument desk 930 to sound into the vehicle.

Furthermore, in the embodiment shown in fig. 10, the piezoelectric sounding assembly 200 can also be mounted inside the seat 540 for sounding a user at a corresponding location within the vehicle. Specifically, the connection mechanism may include a connection cable in addition to the first connection assembly 310 and the second connection assembly 320. The first end of the connection cable is connected to the piezoelectric sounding assembly 200, and the second end thereof is led out of the seat 540 after integrating the seat cable of the functional components such as the electric adjusting mechanism, the massage mechanism, etc. inside the seat 540, so as to connect the piezoelectric sounding assembly 200 to the third driving circuit located outside the seat 540. Here, the third driving circuit may be integrated with the power amplifier module on the power amplifier driving board.

Further, for each seat 540, the piezoelectric sounding assemblies 200 may be disposed on the inner and/or outer surfaces of the seat pan 542 that are not in contact with the occupant, respectively, so as to facilitate the occupant of a different seat having a corresponding in-vehicle speaker. In addition, for the front seat, the piezoelectric sounding assembly 200 may be provided on the inner surface of the seat back plate 541 which is not in contact with the passenger, so that the convenience face sounds the rear passenger.

Further, for the seat 540 including the headrest 543, the headrest 543 may be provided above the seat back plate 541 of the seat 540 via a connection pipe. The piezoelectric sounding assembly 200 may also be fixed to the inner surface of the headrest back plate of the headrest 543 via a connection structure. The connection cable may be led out of the headrest 543 via a connection pipe, integrated with the seat cable inside the seat 540, to connect the piezoelectric sounding assembly 200 disposed inside the headrest 543 to a third driving circuit located outside the seat 540. Therefore, the utility model can also utilize the seat headrest 543 to provide close range hearing effect and enhance the experience of the corresponding user.

Furthermore, in an embodiment of the utility model, the seat 540 may be attached to the vehicle chassis. The piezoelectric sounding assembly 200 may also be secured to the upper surface of a vehicle floor interior trim panel (i.e. vehicle floor) via a connection mechanism, to sound into the vehicle. The connection cable may be integrated with the seat cable outside the seat 540 and extend along the upper and/or lower surface of the floor to connect an external third driving circuit.

Further, since the interior trim panel of the vehicle chassis is also the floor of the vehicle, it may come into contact with the feet of the passengers. Accordingly, the piezoelectric sounding assembly 200 may be preferably disposed in an area such as a floor space below the seat 540 where passengers are not likely to touch, so as to avoid adverse effects of the passengers' touch on their sounding effect.

Further, as shown in fig. 5, the connection mechanism may preferably include a speaker assembly 330 and a second connection assembly 320 in addition to the first connection assembly 310. The first connecting component 310 connects the substrate 210 of the piezoelectric sounding component 200 and the amplifying component 330 to transmit vibration to the amplifying component 330. The speaker assembly 330 is fixed to a seat back 541, a seat cushion pan 542, a headrest 543 pan, or a vehicle floor of the seat 540 via the second connection assembly 320. At this time, the speaker assembly 330 may be located between the base plate 210 and the seat back plate 541, the headrest 543 back plate, or the floor, so as to ensure the volume of the vehicle speaker and meet the user's requirement.

Further, as shown in fig. 10, the speaker assembly 330 may include a speaker plate or speaker chamber 544 disposed within the cushion pan 542. The amplification plate or amplification chamber 544 can be secured to an outer surface of the seat 540, cushion pan 542 via the second linkage assembly 320. At this point, the amplification plate or amplification chamber 544 may be located between the base plate 210 and the seat cushion pan 542. Alternatively, the substrate 210 may be positioned between the speaker assembly 330 and the cushion pan 542, with a gap between the retaining substrate 210 and the cushion pan 542. Thus, even if the cushion base plate 542 is laid with the comfort cushion material, there is a certain sound absorbing effect, and the cushion base plate is easily extruded to affect the vibration space when the passenger sits, so that the cushion base plate 542 is not suitable for being driven to sound, and the piezoelectric sound emitting assembly 200 can still ensure the sound emitting effect by driving the sound amplifying plate or the sound amplifying cavity 544.

Optionally, in other embodiments, the speaker plates or speaker chambers 545 and 546 may be similarly disposed on the seat back 541 and/or the headrest 543 back of the seat 540 to achieve the same technical effects, which will not be described in detail herein.

Furthermore, in an embodiment of the present utility model, the vehicle body assembly may further include an armrest box of the vehicle. The armrest box may be disposed between two adjacent seats of the vehicle. The piezoelectric sounding assembly 200 may be fixed to the armrest box via a connection mechanism, thereby providing a richer acoustic effect and enhancing a user experience with the armrest box of the vehicle.

Further, as shown in fig. 5, the connection mechanism may preferably include a speaker assembly 330 and a second connection assembly 320 in addition to the first connection assembly 310. The first connection assembly 310 connects the substrate 210 and the speaker assembly 330 to transmit vibrations to the speaker assembly 330. The speaker assembly 330 is fixed to the armrest box via the second connection assembly 320. At this time, the sound amplifying assembly is located between the base plate 210 and the armrest box, ensures the volume of the vehicle speaker, and meets the user's requirement.

Thus, the present disclosure has described embodiments of a vehicle and a piezoelectric sounding assembly therein provided by the present utility model. The piezoelectric sounding components with different sounding performances are arranged at different positions of the vehicle, and the combined loudspeaker can be formed on the vehicle, so that a stereoscopic surrounding sound field can be provided for a user. The piezoelectric sounding component can directly drive the vehicle body forming the vehicle to sound, so that the piezoelectric sounding component can have the capability of sounding to the outside of the vehicle, can expand the application scene of the vehicle-mounted loudspeaker, can sound to the inside of the vehicle, and meets various requirements of users for applying the vehicle-mounted loudspeaker.

Further, in accordance with another aspect of the present utility model, there is provided herein a sound-producing vehicle door structure comprising an outer skin panel, an inner skin panel, a functional assembly of a hollow interlayer between the outer skin panel and the inner skin panel. In addition, the vehicle door structure further comprises a piezoelectric sounding component and a connecting mechanism thereof, wherein the piezoelectric sounding component is positioned in the hollow interlayer. Here, the piezoelectric sounding assembly includes: the piezoelectric device comprises a substrate and piezoelectric sheets respectively arranged on the front surface and the back surface of the substrate. The piezoelectric sheet is subjected to elongation deformation or shrinkage deformation in a horizontal plane of the substrate under the action of an external electric field so as to generate vibration perpendicular to the horizontal plane. The connecting mechanism at least comprises a first connecting component and a connecting cable. The first connecting component is arranged on the base plates positioned on two sides of the front piezoelectric sheet along the deformation direction of the piezoelectric sheet so as to transmit the vibration. The first connection assembly may preferably have a distance from the piezoelectric patch in the deformation direction, wherein the sound emission performance of the piezoelectric sound emission assembly may be related to the distance. The piezoelectric sounding assembly is fixed to the surface of the outer shell facing the inner plaque and/or the surface of the inner plaque facing the outer shell via the connection mechanism. The connecting cable is arranged along the edge of the hollow interlayer. The cable of the connecting cable and the cable of the door functional component are integrated and led out of the door structure. The piezoelectric sounding assembly is connected to a first driving circuit located outside the vehicle door structure via the connecting cable.

Further, other relevant configurations of the door structure may be referred to above in the description of the relevant embodiments of the door 400 configured in the vehicle 100, and will not be described in detail herein.

Further, according to another aspect of the present utility model, there is provided a soundable vehicle seat structure comprising at least a seat body and a seat functional component disposed inside the seat body. In addition, the seat structure further includes: and the piezoelectric sounding component is at least attached to the seat body through a connecting mechanism. The piezoelectric sounding component comprises a substrate and piezoelectric sheets respectively arranged on the front surface and the back surface of the substrate. The piezoelectric sheet is subjected to elongation deformation or shrinkage deformation in a horizontal plane of the substrate under the action of an external electric field so as to generate vibration perpendicular to the horizontal plane. The connecting mechanism at least comprises a first connecting component and a connecting cable. The first connecting component is arranged on the base plates positioned on two sides of the piezoelectric sheet on the front face along the deformation direction of the piezoelectric sheet so as to transmit the vibration. The first connection assembly may preferably have a spacing from the piezoelectric patch along the deformation direction, wherein the sound emitting performance of the piezoelectric sound emitting assembly may be related to the spacing. The connecting cable is integrated with the cable of the seat functional part and then led out of the seat body. The piezoelectric sounding component is connected to a third driving circuit located outside the seat body through the connecting cable.

Further, other relevant arrangements of the vehicle seat structure can be referred to the above description of the relevant embodiments of the seat 540 configured in the vehicle 100, and will not be described in detail herein.

Further, according to another aspect of the present utility model, there is provided herein a soundable roof structure comprising an outer skin panel, an inner trim panel, and a functional assembly attached to the outer skin panel and/or the inner trim panel. A hollow interlayer is formed between the outer skin and the inner decorative plate. The roof structure also comprises a piezoelectric sounding component positioned in the hollow interlayer and a connecting mechanism thereof. Here, the piezoelectric sounding assembly includes: the piezoelectric device comprises a substrate and piezoelectric sheets respectively arranged on the front surface and the back surface of the substrate. The piezoelectric sheet is subjected to elongation deformation or shrinkage deformation in a horizontal plane of the substrate under the action of an external electric field so as to generate vibration perpendicular to the horizontal plane. The connecting mechanism at least comprises a first connecting component and a connecting cable. The first connecting component is arranged on the base plates at two sides of the front piezoelectric sheet along the deformation direction of the piezoelectric sheet so as to transmit the vibration. The first connection assembly may preferably have a spacing from the piezoelectric patch along the deformation direction, wherein the sound emitting performance of the piezoelectric sound emitting assembly may be related to the spacing. The piezoelectric sounding component is fixed to the inner surface of the inner decorative plate facing the outer shell plate through the connecting mechanism. The connecting cable is integrated with a cable of a roof function assembly arranged in the hollow interlayer and then led out of the roof structure. The piezoelectric sounding component is connected to a second driving circuit outside the roof structure through the connecting cable.

Further, other relevant configurations of the roof structure can be referred to above in the description of the relevant embodiments of the roof 520 of the vehicle 100, and will not be described in detail herein.

In addition, according to another aspect of the present utility model, there is provided a soundable vehicle bumper structure comprising a bumper housing and an energy absorbing device. In addition, the bumper structure includes a piezoelectric sound emitting assembly attached to the vehicle bumper structure by a connecting mechanism. The piezoelectric sounding component is positioned between the bumper shell and the energy absorbing device. Here, the piezoelectric sounding assembly includes: the piezoelectric device comprises a substrate and piezoelectric sheets respectively arranged on the front surface and the back surface of the substrate. The piezoelectric sheet is subjected to elongation deformation or shrinkage deformation in a horizontal plane of the substrate under the action of an external electric field so as to generate vibration perpendicular to the horizontal plane. The connecting mechanism at least comprises a first connecting component and a connecting cable. The first connecting component is arranged on the base plates at two sides of the front piezoelectric sheet along the deformation direction of the piezoelectric sheet so as to transmit the vibration. The first connection component may preferably have a distance from the piezoelectric plate along the deformation direction, wherein the sound emission performance of the first piezoelectric sound emission component is related to the distance. The connecting cable is attached to the vehicle bumper structure. The first piezoelectric sounding component is connected to a fourth driving circuit via the connecting cable.

Further, other relevant arrangements of the bumper structure can be referred to the description of the relevant embodiments of the bumper configured on the vehicle 100, and will not be described herein.

The previous description is provided to enable any person skilled in the art to practice the various aspects described herein. It is to be understood that the scope of the utility model is to be controlled by the appended claims and not limited to the specific constructions and components of the above-described embodiments. Various changes and modifications to the embodiments may be made by those skilled in the art within the spirit and scope of the utility model, and such changes and modifications are intended to be included within the scope of the utility model.

Claims

1. A vehicle, characterized in that the vehicle comprises: the vehicle comprises a vehicle body, a connecting mechanism and a piezoelectric sounding component; wherein,

the vehicle body comprises one or more preset parts;

the piezoelectric sounding assembly is fixed to the preset portion of the vehicle body via the connecting mechanism, the piezoelectric sounding assembly including:

a substrate; and

the piezoelectric sheets are respectively arranged on the front side and the back side of the substrate, and are subjected to elongation deformation or shrinkage deformation in the horizontal plane where the substrate is positioned under the action of an external electric field so as to generate vibration vertical to the horizontal plane;

The connecting mechanism at least comprises a first connecting component, the first connecting component is arranged on the base plates on two sides of the piezoelectric sheet located on the front face along the deformation direction of the piezoelectric sheet so as to transmit vibration, a space exists between the first connecting component and the piezoelectric sheet along the deformation direction, and the size of the space is related to the preset position of the piezoelectric sounding component fixed to the vehicle body.

2. The vehicle of claim 1, wherein the body is comprised of an outer skin, an inner trim panel, and a body component attached to the outer skin and/or the inner trim panel;

the piezoelectric sounding assembly is fixed to a surface of the casing plate facing the vehicle interior via the connection mechanism; and/or the number of the groups of groups,

the piezoelectric sounding assembly is fixed to a surface of the interior plaque facing the outside of the vehicle via the connecting mechanism; and/or the number of the groups of groups,

the piezoelectric sounding assembly is secured to the body assembly via the connection mechanism.

3. The vehicle of claim 2, wherein the piezoelectric sounding assembly is directly fixed to the preset portion of the vehicle body by the first connection assembly to transmit the vibration to the exterior skin, the interior trim panel, or the vehicle body assembly.

4. The vehicle of claim 3, wherein the piezoelectric sounding assembly is secured to a flattened area on the skin, the interior trim panel, or the body component, the flattened area having a flatness greater than a preset threshold.

5. The vehicle of claim 2, wherein the connection mechanism further comprises a sound amplifying assembly and a second connection assembly, the first connection assembly connecting the base plate and the sound amplifying assembly to transmit the vibrations to the sound amplifying assembly, the sound amplifying assembly being secured to the outer skin, the interior trim panel, or the body assembly via the second connection assembly.

6. The vehicle of claim 5, wherein the sound amplifying assembly is a sound amplifying plate or a sound amplifying cavity.

7. The vehicle of claim 2, wherein the pre-set location comprises one or more of a bumper, door, roof, chassis, instrument desk, seat, armrest box of the vehicle.

8. The vehicle of claim 7, wherein a piezoelectric sound emitting assembly adapted for low frequency sound emission is secured to at least one of the roof, the chassis, and the seat; and/or the number of the groups of groups,

a piezoelectric sounding assembly adapted for mid-high frequency sounding is secured to at least one of the bumper, the door, the roof, the chassis, the instrument desk, and the seat.

9. The vehicle of claim 8, wherein the size of the gap between the piezoelectric patch of the piezoelectric sounding assembly adapted for low frequency sounding and the first connection assembly is in a first preset range;

the size of the interval between the piezoelectric sheet of the piezoelectric sounding component suitable for medium-high frequency sounding and the first connecting component is in a second preset range; wherein the value in the first preset range is greater than the value in the second preset range.

10. The vehicle of claim 2, wherein the predetermined location comprises a door of the vehicle, the door further comprising a first hollow mezzanine between the skin and the interior trim panel, the connection mechanism and the piezoelectric sounding assembly being disposed in the first hollow mezzanine, wherein,

the piezoelectric sounding assembly is fixed to a first surface of the outer shell plate facing the interior trim panel and/or a second surface of the interior trim panel facing the outer shell plate via the connection mechanism;

the connecting mechanism further comprises a first connecting cable, wherein the first connecting cable is arranged along the edge of the first hollow interlayer, and the first connecting cable is integrated with a door cable of the door and then led out of the door so as to connect the piezoelectric sounding component to a first driving circuit located outside the door.

11. The vehicle of claim 10, wherein the first hollow interlayer further comprises a dry region proximate the interior trim panel and a wet region proximate the skin panel, the dry region and the wet region being spaced apart via a sealing layer, the first connecting cable connecting a piezoelectric sound emitting assembly secured to the first surface and bypassing the sealing layer to integrate the door cable.

12. The vehicle of claim 10, wherein a noise reduction device and/or a bump guard is further disposed within the first hollow interlayer, the piezoelectric sound emitting assembly being secured to the first surface avoiding the noise reduction device and/or the bump guard.

13. The vehicle of claim 2, wherein the predetermined location comprises a roof of the vehicle, the roof further comprising a second hollow interlayer between the outer skin and the inner plaque, the connection mechanism and the piezoelectric sounding assembly being disposed in the second hollow interlayer, wherein,

the piezoelectric sounding assembly is fixed to a third surface of the inner plaque facing the outer housing plate via the connecting mechanism;

the connecting mechanism further comprises a third connecting cable, wherein the third connecting cable is led out of the roof after the roof cable of the roof is integrated in the second hollow interlayer, so that the piezoelectric sounding assembly is connected to a second driving circuit positioned outside the roof.

14. The vehicle of claim 13, wherein the piezoelectric sounding assembly is disposed in an area of the second hollow interlayer adjacent to a front windshield and/or a rear windshield of the vehicle.

15. The vehicle of claim 14, wherein the roof cable comprises a roof light cable and/or an antenna cable, the third connection cable being led out of the roof after integration of the roof light cable and/or antenna cable in the second hollow interlayer.

16. The vehicle of claim 13, wherein the central region of the roof includes a sunroof structure, the piezoelectric sound assembly being secured to an interior trim panel of the roof against the sunroof structure.

17. The vehicle of claim 16, wherein the roof cable comprises a sunroof cable of the sunroof structure, the third connection cable being led out of the roof after integrating the sunroof cable in the second hollow interlayer.

18. The vehicle of claim 13, wherein the central region of the roof includes a sunroof structure including an outer light-transmitting panel and/or an inner light-shielding panel, the outer light-transmitting panel being flush with the outer skin panel, the inner light-shielding panel being retractable into the second hollow interlayer;

The vehicle further comprises a third piezoelectric sounding component and a corresponding third connecting mechanism, wherein the third piezoelectric sounding component is arranged on the skylight structure and is fixed to the fourth surface, facing the outer-layer light-transmitting plate, of the inner-layer light-shielding plate through the third connecting mechanism.

19. The vehicle of claim 13, wherein the connection mechanism further comprises a sound amplifying assembly and a second connection assembly, the first connection assembly connecting the base plate and the sound amplifying assembly to transmit the vibrations to the sound amplifying assembly, the sound amplifying assembly being secured to an inner visor of the interior trim panel or the sunroof structure of the roof via the second connection assembly.

20. The vehicle of claim 2, wherein the body assembly includes a seat of the vehicle, the connection mechanism further comprising a fourth connection cable that is routed out of the seat after integration of a seat cable of the seat to connect the piezoelectric sounding assembly to a third drive circuit located outside of the seat.

21. A vehicle as recited in claim 20, wherein the piezoelectric sounding assembly is secured to an inner surface of a seat back plate of the seat, an inner surface of a seat cushion pan of the seat, and/or an outer surface of a seat cushion pan of the seat via the connection mechanism.

22. The vehicle of claim 20, wherein the seat further comprises a headrest disposed above a seat back of the seat via a connecting tube, the piezoelectric sounding assembly further being secured to an inner surface of the headrest back of the headrest via the connecting structure, the fourth connecting cable being led out of the headrest via the connecting tube, the seat cable being re-integrated.

23. The vehicle of claim 20, wherein the seat is attached to a floor of the vehicle, the piezoelectric sound emitting assembly is further secured to an upper surface of the floor via the connection mechanism, and the fourth connection cable is integrated with the seat cable outside the seat and extends along an upper surface and/or a lower surface of the floor to connect the third driving circuit.

24. The vehicle of claim 20, wherein the connection mechanism further comprises a speaker assembly and a second connection assembly, the first connection assembly connecting the base plate and the speaker assembly to transmit the vibrations to the speaker assembly, the speaker assembly being secured to a seat back, a seat cushion pan, a headrest back, or a floor of the vehicle via the second connection assembly, the speaker assembly being located between the base plate and the seat back, the headrest back, or the floor.

25. The vehicle of claim 24, wherein the loudspeaker assembly is further secured to an outer surface of the seat pan via the second connection assembly, wherein,

the sound amplifying component is positioned between the base plate and the cushion bottom plate, or

The base plate is located between the sound amplifying assembly and the cushion bottom plate, and a gap exists between the base plate and the cushion bottom plate.

26. The vehicle of claim 2, wherein the body component comprises an armrest box of the vehicle, the armrest box being disposed between two adjacent seats of the vehicle, the piezoelectric sounding component being secured to the armrest box via the connection mechanism.

27. The vehicle of claim 26, wherein the connection mechanism further comprises a speaker assembly and a second connection assembly, the first connection assembly connecting the base plate and the speaker assembly to transmit the vibrations to the speaker assembly, the speaker assembly being secured to the armrest box via the second connection assembly, the speaker assembly being located between the base plate and the armrest box.

28. The vehicle of claim 2, wherein the body component comprises a bumper comprising a bumper housing and an energy absorber, the connection mechanism and the piezoelectric sounding component being disposed between the bumper housing and the energy absorber;

The connection mechanism further includes a fifth connection cable, wherein the fifth connection cable is attached to the bumper, and the piezoelectric sounding assembly is connected to a fourth driving circuit via the fifth connection cable.

29. The vehicle of claim 28, wherein the energy absorbing device comprises a first energy absorbing structure attached to the bumper shell and/or a second energy absorbing structure attached to a body frame of the vehicle;

the piezoelectric sounding assembly is attached to an inner surface of the bumper housing via the connecting mechanism and is located between the bumper housing and the first energy absorbing structure, and/or

The piezoelectric sounding component is attached to the second energy absorbing structure via the connecting structure and is located between the bumper shell and the second energy absorbing structure.

30. The vehicle of claim 29, wherein the energy absorbing device comprises the first energy absorbing structure and the second energy absorbing structure, and a piezoelectric sound emitting assembly attached to the second energy absorbing structure is attached to the second energy absorbing structure avoiding the first energy absorbing structure.

31. The vehicle of claim 29, wherein the connection mechanism further comprises a sound amplifying assembly and a second connection assembly, the first connection assembly connecting the base plate and the sound amplifying assembly to transfer the vibrations to the sound amplifying assembly, the sound amplifying assembly being secured to the second energy absorbing structure via the second connection assembly, and the base plate being located between the sound amplifying assembly and the second energy absorbing structure.

32. The vehicle of claim 28, wherein the piezoelectric sounding assembly is secured to a flattened area on the inner surface of the bumper housing via the first connection assembly, the flattened area having a flatness greater than a preset threshold, or

The base plate of the piezoelectric sounding assembly is connected with the sound amplifying assembly of the connecting mechanism through the first connecting assembly, vibration is transmitted to the sound amplifying assembly through the first connecting assembly, the sound amplifying assembly is fixed to the inner surface of the bumper shell through the second connecting assembly of the connecting mechanism, and the sound amplifying assembly is located between the base plate and the bumper shell.

33. The vehicle of claim 28, wherein the bumper housing includes at least one functional area of a grill area, a license plate area, a radar sensor area, the piezoelectric sounding assembly being attached to the bumper avoiding the functional area.

34. The vehicle of claim 28, wherein the bumper comprises a front bumper and/or a rear bumper, wherein,

a fifth connection cable attached to the piezoelectric sounding assembly of the front bumper is juxtaposed with a front bumper cable at least one of a vehicle light, a first radar sensor, a first camera head located at the vehicle head, and/or,

And a fifth connecting cable attached to the piezoelectric sounding component of the rear bumper is combined with a rear bumper cable of at least one of a car lamp, a second radar sensor and a second camera at the tail of the car.