Sound production device and vehicle

Abstract

The invention discloses a sound production device and a vehicle, and relates to the technical field of sound production equipment, and the sound production device is wide in application scene and simple and compact in structure. The sound production device comprises a vibration piece, a connecting piece, an adjusting piece and at least two structural pieces, wherein the vibration piece is used for generating vibration; the at least two structural members are arranged on different sides of the vibration member, and the structural members are used for following vibration to produce sound; each structural member is connected to the vibration member through at least one connecting member, the connecting member has a flexible state and a rigid state, and when the connecting member is switched to the rigid state, vibration is transmitted to the corresponding structural member; the adjusting piece is connected to each connecting piece and used for adjusting the state of the connecting piece. The sounding device is used for sounding inside and outside the vehicle.

Description

Technical Field

[0001] This application relates to, but is not limited to, the field of sound-generating equipment, and particularly to a sound-generating device and vehicle. Background Technology

[0002] Sound-emitting structures are commonly used in various interactive scenarios, such as the interaction between people inside and outside a vehicle. However, in related technologies, sound-emitting structures can usually only emit sound in a directional manner, or emit sound in multiple directions at the same time, which is difficult to meet the usage requirements. Summary of the Invention

[0003] One objective of this application is to provide a sound-generating device that has the advantages of richer functions, wider application scenarios, and a simple and compact structure.

[0004] Another objective of this application is to provide a sound-generating device, the advantage of which is that each structural component is connected to the vibrating component by two connectors, and the two connectors are respectively located at opposite ends of the vibrating component, so that the vibration generated by the vibrating component can be transmitted to the structural component more evenly, and the fault tolerance of the two connectors is higher. When one connector fails, the other connector can still transmit vibration. In addition, the fact that connectors are provided at both ends of the vibrating component also makes the vibrating component more stably supported.

[0005] Another objective of this application is to provide a sound-generating device, the advantage of which is that the first side of the connector is connected to the structural member, so that the contact area between the connector and the structural member is larger and the vibration transmission effect is better. At least two connecting parts of the connector are symmetrically arranged about the vibrating member, which facilitates the uniform transmission of the vibration generated by the vibrating member to the connector, and can improve the fault tolerance rate and provide more stable support for the vibrating member.

[0006] Another objective of this application is to provide a sound-generating device, the advantage of which is that the connector includes a base and a switching part. The base is rigidly set and is only used for connection and vibration transmission, without state adjustment. The switching part performs state switching. The switching part is relatively small in volume compared to the entire connector, and the state switching is more efficient.

[0007] Another objective of this application is to provide a sound-generating device with the advantage of having a base at each end of the switching part. The ends of these bases, furthest from the switching part, are respectively mounted on the structural member and the vibrating member, forming a structure with the switching part sandwiched between the two bases. This type of connector, with its bases at both ends and rigid components, ensures more efficient vibration transmission and facilitates sound generation from the panel. Furthermore, this type of connector has a relatively small size, requiring less installation space, making it easier to place the device in the confined space of a vehicle, or even on the interior surface of the vehicle.

[0008] Another objective of this application is to provide a sound-generating device, the advantage of which is that there is a gap between the end of the switching part and the structural member and the vibrating member. The benefit of this design is that when the switching part is in a rigid connection state, due to the existence of the gap, the vibration generated by the vibrating member will not be transmitted to the structural member through the switching part. After all, the rigidity of the materials of the base and the switching part is different, and their ability to transmit vibration is different. If the base and the switching part transmit vibration to the structural member at the same time, it may cause the vibration frequency to be inconsistent, affecting the sound generation effect.

[0009] Another objective of this application is to provide a sound-generating device, the advantage of which is that a sound-insulating member is provided between two adjacent structural members. The sound-insulating member divides the receiving cavity into at least two chambers, so that each structural member has an independent chamber. The sound-insulating member blocks vibration, thereby reducing the possibility that the vibration generated by the structural member will enter other chambers and cause other structural members to vibrate, and reducing the mutual influence when the structural members vibrate.

[0010] Another objective of this application is to provide a sound-generating device, the advantage of which is that a sound-absorbing layer is provided on the sound insulation component. The sound-absorbing layer is located on the side close to the vibrating component, that is, the inner wall of the receiving cavity. When the vibrating component in the receiving cavity vibrates, the vibration wave is transmitted to the sound-absorbing layer and absorbed, thereby reducing the possibility of the vibration wave being reflected and forming an echo interference.

[0011] Another objective of this application is to provide a sound-generating device, the advantage of which is that the adjusting member is located on the side of the sound insulation member away from the vibrating member, that is, the adjusting member is located on the outside of the receiving cavity, which has less impact on the components inside the receiving cavity. The through hole in the sound insulation member facilitates the connection between the adjusting member and the connecting member.

[0012] Another objective of this application is to provide a sound-generating device, which has the advantage that the flexible part forms a sealed cavity, and the state of the flexible part can be changed by pumping in or out fluid. The structure is simple and easy to implement.

[0013] Another objective of this application is to provide a sound-generating device, the advantage of which is that the vibrating element includes a piezoelectric element and a vibrating body. The piezoelectric element generates vibration, and the vibrating body amplifies the amplitude of the vibration to increase the output power, so as to better drive the structural components to vibrate and also to compensate for the loss of vibration during transmission.

[0014] Another objective of this application is to provide a vehicle with the advantage that, by setting the structural plate and the decorative plate as structural components, with the structural plate facing the outside of the vehicle and the decorative plate facing the inside of the vehicle, the vibrating component of the sound-generating device can drive the structural component and the decorative plate to vibrate respectively, thereby generating sound on the outside or inside of the vehicle, and the adjusting component is electrically connected to an electronic device for control by the electronic device, making it more convenient and intelligent.

[0015] To achieve the above objectives, one aspect of this application provides a sound-generating device, including a vibrating element, a connecting element, an adjusting element, and at least two structural elements. The vibrating element is used to generate vibration; the at least two structural elements are disposed on different sides of the vibrating element and are used to follow the vibration to generate sound; each structural element is connected to the vibrating element through at least one connecting element, and the connecting element includes a flexible state and a rigid state. When the connecting element switches to a rigid state, it transmits vibration to the corresponding structural element; the adjusting element is connected to each connecting element and is used to adjust the state of the connecting element.

[0016] Another aspect of this application provides a vehicle, including a vehicle body comprising a structural panel and a decorative panel; electronic equipment connected to the vehicle body; and a sound-generating device as described above, wherein the sound-generating device comprises two structural components, namely the structural panel and the decorative panel, and an adjusting component electrically connected to the electronic equipment.

[0017] In this embodiment, the vibrating element generates vibration, and the structural element follows the vibration of the vibrating element to produce sound. Since at least two structural elements are respectively arranged on different sides of the vibrating element, the sound-producing device can produce sound from multiple directions. Furthermore, each structural element is connected to the vibrating element via at least one connector. On one hand, the connector connects the vibrating element and the structural element, with the structural element providing support for the vibrating element. On the other hand, the connector transmits the vibration generated by the vibrating element to the corresponding structural element, causing the structural element to vibrate and produce sound. The connector includes a flexible state and a rigid state. An adjusting member can adjust the state of the connector. When the adjusting member adjusts the connector to a rigid state, the connector can transmit vibration to the corresponding structural element. When the adjusting member adjusts the connector to a flexible state, the flexible state absorbs vibration, thus blocking the transmission of vibration to the corresponding structural element. With this configuration, the adjusting member can adjust whether each structural element vibrates and produces sound by adjusting the state of different connectors. Based on a piezoelectric element, the function of producing sound from different directions at different times can be realized, as well as the function of producing sound from multiple directions simultaneously. Compared with related technologies, where the sound-generating device is directional or multi-directional simultaneous sound generation, this application, due to the setting of a switchable connector, allows one piezoelectric element to drive multiple structural components to vibrate and generate sound at the same or different times, thereby realizing the function of simultaneous multi-directional sound generation or sound generation in different directions at different times. The functions are richer, the application scenarios are wider, and the structure is simpler and more compact due to the use of a single piezoelectric element. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the vehicle structure provided in an embodiment of this application;

[0019] Figure 2 A schematic diagram (front view) of the sound-generating device provided in the embodiments of this application;

[0020] Figure 3 This is a schematic diagram showing the state of the connector in the sound-generating device provided in the embodiments of this application;

[0021] Figure 4 This is a cross-sectional structural diagram of the sound-generating device provided in the embodiments of this application;

[0022] Figure 5 A schematic diagram (left view) of the sound-generating device provided in an embodiment of this application;

[0023] Figure 6 This is a schematic diagram of the connecting part in the sound-generating device provided in the embodiments of this application;

[0024] Figure 7 This is a schematic diagram of the structure of the switching part connecting the vibrating element in the sound-generating device provided in the embodiments of this application;

[0025] Figure 8 This is a schematic diagram of the connecting structure of the switching part in the sound-generating device provided in the embodiments of this application;

[0026] Figure 9 This is a schematic diagram of the sound insulation component in the sound-generating device provided in the embodiments of this application;

[0027] Figure 10 A schematic diagram showing the arrangement of sound insulation components in the sound-generating device provided in the embodiments of this application;

[0028] Figure 11 A schematic diagram of the flexible part (rigid state) in the sound-generating device provided in the embodiments of this application;

[0029] Figure 12 A schematic diagram of the flexible part (flexible state) in the sound-generating device provided in the embodiments of this application;

[0030] Figure 13 A schematic diagram of one embodiment of the connector in the sound-generating device provided in this application;

[0031] Figure 14 A schematic diagram of another embodiment of the connector in the sound-generating device provided in this application;

[0032] Figure 15 A schematic diagram of another embodiment of the connector in the sound-generating device provided in this application;

[0033] Figure 16 This is a schematic diagram of the vehicle's structural composition provided in an embodiment of this application.

[0034] Figure label:

[0035] 100 - Sound-generating device; 110 - Vibrating component; 111 - Receiving notch; 112 - Piezoelectric element; 113 - Vibrating body; 120 - Structural component; 130 - Connecting component; 131 - First side; 132 - Second side; 133 - Connecting part; 134 - Base; 135 - Switching part; 136 - Flexible part; 137 - Sealing cavity; 140 - Adjusting component; 150 - Receiving cavity; 160 - Sound insulation component; 161 - Base layer; 162 - Sound-absorbing layer; 163 - Through hole; 200 - Vehicle body; 210 - Structural plate; 220 - Decorative plate; 300 - Electronic equipment. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the specific technical solutions of this application will be further described in detail below with reference to the accompanying drawings of the embodiments of this application. The following embodiments are used to illustrate this application, but are not intended to limit the scope of this application.

[0037] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.

[0038] Furthermore, in the embodiments of this application, directional terms such as "upper," "lower," "left," and "right" are defined relative to the positions in which the components are schematically placed in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the position of the components in the accompanying drawings.

[0039] In the embodiments of this application, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium.

[0040] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0041] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0042] This application provides a vehicle embodiment, but does not limit the type of vehicle. Exemplarily, in this application embodiment, a vehicle can refer to a sedan, SUV, sport utility vehicle (SUV), multi-purpose vehicle (MPV), truck, bus, public bus, etc. In this application embodiment, a vehicle can refer to a gasoline-powered vehicle, a new energy vehicle, a hybrid electric vehicle, or a vehicle powered by a traction power supply system, such as a trolleybus.

[0043] Reference Figure 1 The vehicle provided in this application embodiment includes a vehicle body 200, a power system, an electrical system, an entertainment system, etc. The vehicle body 200 is usually equipped with a sound-emitting device 100, which can be used for in-vehicle entertainment, human-computer interaction, and interaction between the interior and exterior spaces of the vehicle. However, in related technologies, the sound-emitting device 100 is usually directional or multi-directional simultaneous sound, which is difficult to meet the usage requirements.

[0044] Therefore, this application embodiment also provides a sound-generating device 100, referring to... Figure 2 , Figure 3 and Figure 4 The sound-generating device 100 includes a vibrating element 110, a connecting element 130, an adjusting element 140, and at least two structural elements 120. The vibrating element 110 is used to generate vibration. The at least two structural elements 120 are disposed on different sides of the vibrating element 110 and are used to follow the vibration to generate sound. Each structural element 120 is connected to the vibrating element 110 through at least one connecting element 130, and the connecting element 130 includes a flexible state and a rigid state. When the connecting element 130 switches to the rigid state, it transmits the vibration to the corresponding structural element 120. The adjusting element 140 is connected to each connecting element 130 and is used to adjust the state of the connecting element 130.

[0045] In this embodiment, the vibrating element 110 can be electromagnetic, generating vibration through electromagnetic effect; or it can be piezoelectric, generating vibration through piezoelectric effect. For example, if the vibrating element 110 is piezoelectric, when an electric field is applied to it, the vibrating element 110 deforms under the influence of the electric field. When the electric field changes, the deformation of the vibrating element 110 changes accordingly, thereby generating vibration.

[0046] In this embodiment, the structural member 120 can be two or more, and the multiple structural members 120 can be arranged in a ring array around the vibrating member 110. Each structural member 120 faces a different direction relative to the vibrating member 110. For example, three structural members 120 are arranged in an equilateral triangle, and six structural members 120 are arranged in a regular hexagon. (Refer to...) Figure 2 , Figure 3 and Figure 4 In one possible embodiment of this application, there are two structural members 120, which are arranged opposite to each other, and the vibrating member 110 is located between the two structural members 120.

[0047] In this embodiment, flexibility and rigidity are relative concepts, not absolute concepts. The flexible connector 130 is more likely to deform, thereby reducing the transmission of vibration. The rigid connector 130 is less likely to deform, and can transmit vibration more accurately from the vibrating component 110 to the corresponding structural component 120.

[0048] In this embodiment, the connector 130 can take many possible forms. For example, the connector 130 is made of a magnetostrictive material, and its state can be changed by applying different magnetic fields; another example is that the connector 130 is made of a shape memory alloy material, and its state can be changed by changing its temperature; yet another example is that the connector 130 is an airbag, and its state can be switched by inflating and deflating.

[0049] As can be understood from the above, the connector 130 can be made of a special material that has the ability to switch between flexible and rigid states. In some embodiments, the connector 130 can also be a combination structure of a rigid base 134 and at least one switching part 135. When the connector 130 is a combination structure, the switching part has a flexible state and a rigid state. When the switching part 135 switches to a rigid state, the vibration is transmitted to the corresponding structural member 120 through the base 134.

[0050] In this embodiment of the application, when the connector 130 is a combined structure, its base 134 can be disposed at both ends or on the side of the switching part 135. (See attached document) Figure 13 A specific embodiment is given in which the base 134 is disposed at both ends of the switching part 135, and attached... Figure 15 A specific embodiment in which the base 134 is disposed on the side of the switching part 135 is given. The following will describe the appendix. Figure 13 and attached Figure 15 The structure shown is explained in detail.

[0051] In this embodiment, the switching part 135 may be made of a magnetostrictive material, and the state of the switching part 135 may be changed by applying different magnetic fields; for example, the switching part 135 may be made of a shape memory alloy material, and the state may be changed by changing its temperature; for another example, the switching part 135 may be an airbag, and the state may be switched by inflating and deflating the airbag.

[0052] In this embodiment of the application, depending on the form of the connector 130, the adjusting member 140 may also have various possible forms. For example, when the connector 130 is made of magnetostrictive material, the adjusting member 140 may be a component that can generate and adjust a magnetic field; for another example, when the connector 130 is made of shape memory alloy material, the adjusting member 140 may be a component that can change temperature; and for yet another example, when the connector 130 is an airbag, the adjusting member 140 may be an air pump connected to the airbag.

[0053] In the sound-generating device 100 of this application embodiment, the vibrating member 110 can generate vibration, and the structural member 120 can follow the vibration of the vibrating member 110 to generate sound. Since at least two structural members 120 are respectively arranged on different sides of the vibrating member 110, the sound-generating device 100 can generate sound in multiple directions.

[0054] Based on this, each structural member 120 is connected to the vibrating member 110 through at least one connector 130. On the one hand, the connector 130 can connect the vibrating member 110 and the structural member 120, and the structural member 120 can provide support for the vibrating member 110. On the other hand, the connector 130 can transmit the vibration generated by the vibrating member 110 to the corresponding structural member 120, so that the structural member 120 can produce sound by following the vibration.

[0055] The connector 130 includes a flexible state and a rigid state. The adjusting member 140 can adjust the state of the connector 130. When the adjusting member 140 adjusts the connector 130 to a rigid state, the connector 130 can transmit vibration to the corresponding structural member 120. When the adjusting member 140 adjusts the connector 130 to a flexible state, the flexible state can absorb vibration, thereby blocking the transmission of vibration to the corresponding structural member 120. With this configuration, the adjusting member 140 can adjust whether each structural member 120 vibrates and produces sound by adjusting the state of different connectors 130. Figure 3 The upper connector 130 is in a rigid state, while the lower connector 130 is in a flexible state. When the vibrating element 110 vibrates, it can drive the upper structural element 120 to vibrate, but it is difficult to drive the lower vibrating element 120 to vibrate. Based on a piezoelectric element 112, it can realize the function of sound generation in different directions at different times, and it can also realize the function of multi-directional sound generation at the same time.

[0056] Compared with related technologies where the sound-generating device 100 is a directional or multi-directional simultaneous sound-generating solution, this application, due to the setting of a state-switchable connector 130, allows one piezoelectric element 112 to drive multiple structural components 120 to vibrate and generate sound at the same or different times, thereby realizing the function of simultaneous multi-directional sound generation or sound generation in different directions at different times. The functions are richer and the application scenarios are wider. The structure is also simpler and more compact due to the use of a single piezoelectric element 112.

[0057] In order to uniformly transmit the vibration energy generated by the vibrating element 110 to the structural element 120, refer to Figure 2 , Figure 3 and Figure 4 In one possible embodiment of this application, two connectors 130 are connected between the vibrating element 110 and each structural element 120, and the two connectors 130 are respectively disposed at opposite ends of the vibrating element 110.

[0058] In this embodiment, the vibrating element 110 can be a block structure, a plate structure, etc., as shown in the reference. Figure 3 , Figure 4 and Figure 5 In one possible embodiment of this application, the vibrating element 110 is a rectangular plate structure, and structural elements 120 are respectively provided on opposite sides of the vibrating element 110 along its thickness direction.

[0059] To reduce space usage, refer to Figure 2 , Figure 4 and Figure 5 In one possible embodiment of this application, the surface of the vibrating element 110 is provided with receiving notches 111. The number and position of the receiving notches 111 correspond one-to-one with the connecting elements 130. A portion of the connecting element 130 is disposed within the receiving notches 111 to reduce space occupation. It should be noted that, in order to avoid the vibrating element 110 contacting the structural element 120 during vibration, the connecting element 130 should extend beyond the receiving notches 111 along the thickness direction of the vibrating element 110, so that a gap is left between the vibrating element 110 and the structural element 120.

[0060] In this embodiment, the receiving notch 111 can be provided on the end face of the vibrating element 110 or at a corner of the vibrating element 110. For ease of connection of the connector 130, refer to 2 and... Figure 4 In one possible embodiment of this application, the receiving notch 111 is located at the corner of the vibrating member 110.

[0061] In this embodiment, the connection between the connector 130 and the vibrating member 110 can be by snap-fitting, bonding, welding, fastener connection, etc. For example, the connector 130 and the vibrating member 110 are fixed by bonding. In addition, the connection between the connector 130 and the corresponding structural member 120 can also be by snap-fitting, bonding, welding, fastener connection, etc. For example, the connector 130 and the corresponding structural member 120 are fixed by bonding.

[0062] In the sound-generating device 100 of this application embodiment, since each structural component 120 is connected to the vibrating component 110 through two connectors 130, and the two connectors 130 are respectively disposed at opposite ends of the vibrating component 110, the vibration generated by the vibrating component 110 can be transmitted to the structural component 120 more evenly, and the fault tolerance of the two connectors 130 is higher. When one connector 130 fails, the other connector 130 can still transmit vibration. In addition, the fact that connectors 130 are disposed at both ends of the vibrating component 110 also makes the vibrating component 110 more stably supported.

[0063] To facilitate the transmission of the vibrating element 110 from the connecting member 130 to the corresponding structural member 120, refer to Figure 6 In one possible embodiment of this application, the first side 131 of the connector 130 is connected to the corresponding structural member 120, and the second side 132 of the connector 130 is provided with at least two connecting portions 133, which are connected to the vibrating member 110. The at least two connecting portions 133 are symmetrically arranged about the vibrating member 110.

[0064] In this embodiment of the application, the first side 131 and the second side 132 of the connector 130 can be arranged opposite to each other or adjacent to each other. In order to facilitate the transmission of vibration between the vibrating member 110 and the structural member 120, the first side 131 and the second side 132 of the connector 130 are arranged opposite to each other.

[0065] In this embodiment, the number of connecting parts 133 can be two or more, and the multiple connecting parts 133 can be arranged in a rectangular array or a linear array on the surface of the vibrating member 110. (Refer to...) Figure 6 In one possible embodiment of this application, the connector 130 is provided with two connecting portions 133, which are respectively disposed at both ends of the vibrating member 110. The connecting portions 133 may also be disposed in the corresponding receiving notches 111.

[0066] In the sound-generating device 100 of this application embodiment, the first side 131 of the connector 130 is connected to the structural member 120, which makes the contact area between the connector 130 and the structural member 120 larger and the vibration transmission effect better. At least two connecting parts 133 of the connector 130 are symmetrically arranged about the vibrating member 110, which facilitates the uniform transmission of the vibration generated by the vibrating member 110 to the connector 130, improves the fault tolerance rate, and provides more stable support for the vibrating member 110.

[0067] It should be noted that the connector 130 has various possible structural forms, including block-shaped, plate-shaped, and strip-shaped structures. (Refer to...) Figure 4 and Figure 5 In one possible embodiment of this application, the connector 130 is a strip-shaped structure, and a portion of the connector 130 is accommodated in the receiving notch 111, forming a gap between the vibrating member 110 and the structural member 120; see reference Figure 6 In another possible embodiment of this application, the connector 130 is a plate-shaped structure. The connector 130 is located between the vibrating member 110 and the corresponding structural member 120. The connector 130 protrudes to the side facing the vibrating member 110 to form a connecting portion 133.

[0068] To make the state switching of connector 130 more efficient, refer to Figure 7 and Figure 8 In one possible embodiment of this application, the connector 130 includes a base 134 and at least one switching part 135. The base 134 is connected to the corresponding structural member 120, and the switching part 135 is connected to the vibrating member 110; or, the switching part 135 is connected to the corresponding structural member 120, and the base 134 is connected to the vibrating member 110; wherein the base 134 is rigidly disposed, and the switching part 135 can switch between a flexible state and a rigid state.

[0069] In this embodiment, one of the base 134 and the switching part 135 is connected to the vibrating member 110, and the other is connected to the corresponding structural member 120. The base 134 can be a plate-like structure, and the switching part 135 is disposed on the side of the base 134, or the switching part 135 is disposed at the end of the base 134.

[0070] Reference Figure 2 , Figure 4 and Figure 7 In one possible embodiment of this application, the connector 130 is located at the end of the vibrating member 110, and the opposite surfaces of the connector 130 are respectively connected to the vibrating member 110 and the corresponding structural member 120. The base 134 and the switching part 135 can be symmetrically distributed along the thickness direction of the vibrating member 110.

[0071] Taking the arrow indicating the thickness direction in the illustration as an example, the thickness direction in this application refers to the relative positional direction of the two structural members 120. In one specific embodiment, the two structural members 120 may be arranged parallel to each other, in which case the thickness direction may be perpendicular to the facing end faces of the two structural members 120. In another specific embodiment, the two structural members 120 may be arranged at an angle, in which case the thickness direction is the direction of one structural member relative to the other structural member.

[0072] See Figure 6 , Figure 13 and Figure 14 As shown, in one possible embodiment of this application, the first side 131 of the connector 130 is connected to the corresponding structural member 120, and the second side 132 of the connector 130 is provided with two connecting portions 133, which are connected to the vibrating member 110. The two connecting portions 133 are symmetrically arranged about the vibrating member 110. Two switching portions 135 are arranged on the first side 131 and are provided at the ends of the connecting portions 133 away from the vibrating member 110. The end faces of the connecting portions 133 and the switching portions 135 are all provided on the switching portions 135. Specifically, two switching portions 135 are provided on the first side 131. The cross-sectional area of ​​the switching portions 135 in the thickness direction of the vibrating member 110 is slightly larger than the area of ​​the end faces of the connecting portions 133 and the switching portions 135, so as to minimize the volume of the switching portions 135 and thus reduce the cost. In addition, in some embodiments, when the switching unit 135 is in the form of an airbag, it is small in size and has a fast inflation and deflation speed, which can improve the sensitivity of switching the sound direction. Moreover, the smaller the size, the better the rigidity of the airbag in the rigid state, making it easier to transmit vibrations and resulting in better sound quality.

[0073] It is understandable that, on the other hand, the smaller the volume of the switching part, the larger the volume of the base in the first side 131 can be. Since the base is a rigid component, the more rigid connection area between the first side 131 and the structural component 120, the better the vibration and sound generation effect. In some embodiments, the connection method between the connector 130 and the vibrating component 110 and the structural component 120 can be adhesive bonding, welding, etc.

[0074] Reference Figure 7 and Figure 8 In another possible embodiment of this application, the connector 130 is located between the vibrating member 110 and the corresponding structural member 120. The connector 130 is connected to the vibrating member 110 through the connecting portion 133. The connecting portion 133 can be used as the switching portion 135, and the remaining part of the connector 130 can be used as the base portion 134. Alternatively, the connecting member 130 can be provided with the switching portion 135 on the side facing the corresponding structural member 120, and the connecting portion 133 can be connected to the vibrating member 110 as part of the base portion 134.

[0075] The sound-generating device 100 of this application embodiment includes a base 134 and a switching part 135 in the connector 130. The base 134 is rigidly set and is only used for connection and vibration transmission, without state adjustment. The state switching is performed by the switching part 135. The switching part 135 is smaller in volume than the entire connector 130, and the state switching is more efficient.

[0076] See Figure 14 As shown, in another possible embodiment of this application, the structure of the connector 130 can also be:

[0077] In the thickness direction of the vibrating element 110, a base 134 is provided at each end of the switching part 135. The end of the base 134 away from the switching part 135 is respectively provided on the structural member 120 and the vibrating element 135, forming a structure in which a switching part 135 is sandwiched between two bases 134. In a specific embodiment, the middle switching part 135 is an inflatable and deflated airbag. When the airbag is inflated, the switching part 135 is in a rigid state, and the vibration generated by the vibrating element is transmitted to the structural member 120 in sequence through the base 134, the switching part 135, and the base 134, thus realizing vibration and sound generation. The two ends of the connector of this structural form are the bases 134, which are rigid members. The rigid contact between the bases 134 and the vibrating element and the structural member is more conducive to the transmission of vibration and powerfully drives the panel to generate sound. In addition, the connector of this structural form has a relatively small volume, low requirements for installation space, and makes it easier to arrange the device in the small space of the vehicle body, or even the interior surface of the vehicle.

[0078] Obviously, in other embodiments, the structure of a switching part 135 sandwiched between the two bases 134 can also be provided in multiple sets in the connector 130, so as to make the transmission and adjustment of vibration more flexible and varied.

[0079] See Figure 15 As shown, in another possible embodiment of this application, the structure of the connector 130 can also be:

[0080] In the direction perpendicular to the thickness of the vibrating member 110, bases 134 are respectively provided on both sides of the switching part 135; the bases 134 include: a first base 1341, one end of which is disposed on the vibrating member 110; and a second base 1342, one end of which is disposed on the structural member 120, and the other end of which is movably connected to the end of the first base 1341 away from the vibrating member 110, wherein the first base 1341 and the second base 1342 are both connected to the side end face of the switching part 135.

[0081] It can be understood that the switching part 135 is an airbag, and the first base 1341 and the second base 1342 are hinged together. When the airbag is not inflated, the vibration generated by the vibrating member 110 is transmitted to the first base 1341. Due to the movable connection between the first base 1341 and the second base 1342, the vibration cannot be completely transmitted to the second base 1342, thus effectively suppressing the vibration-generated sound. When the airbag is inflated, the tensile force of the inflated airbag causes the hinged first and second bases to be aligned in a straight line along the thickness direction of the vibrating member 110, and they abut against each other under the influence of the airbag. After the vibrating member 110 vibrates, the vibration can be transmitted from the first base to the second base. With this structure, when the switching part is rigid, the vibration transmission is entirely achieved through the rigid base. Compared to the aforementioned vibration transmission path, which requires passing through the switching part, the vibration transmission effect is better, resulting in a better sound production effect.

[0082] In some embodiments of this disclosure, the connection between the first base 1341 and the second base 1342 and the vibrating element and structural element can also be movable, such as hinged. Alternatively, it can be a fixed connection. In the case of a fixed connection, a gap required for airbag deformation needs to be reserved between the structural element and the driven element (such as a body panel, interior panel, etc.). It is understood that the value of the aforementioned gap should be slightly less than or equal to the gap value required for airbag deformation to ensure effective contact between the structural element and the driven element without causing deformation of the driven element.

[0083] In the embodiments disclosed herein, there is a gap between the end of the switching part 135 and the structural member 120 and the vibrating member 110. The advantage of this design is that when the switching part 135 is in a rigid connection state, due to the existence of the gap, the vibration generated by the vibrating member will not be transmitted to the structural member through the switching part 135. After all, the rigidity of the materials of the base and the switching part 135 is different, and their ability to transmit vibration is different. If the base and the switching part transmit vibration to the structural member at the same time, it may cause the vibration frequency to be inconsistent, affecting the sound production effect.

[0084] It is understood that the size of the gap can be determined by calculating the minimum distance between the upper surface of the first base away from the structural member and the vibrating member when the switching part 135 is in a flexible state.

[0085] Of course, in some embodiments of this disclosure, for the sake of simplifying the design, one end of the first base 1341 and the second base 1342 may not be connected to the vibrating member 110 and the structural member 120. When the switching part is in a rigid state, it drives the first base and the second base to abut against each other, while the other ends of the first base and the second base abut against the vibrating member 110 and the structural member 120 respectively, thereby realizing the transmission of vibration.

[0086] To reduce mutual interference between structural components 120, refer to Figure 2 , Figure 4 and Figure 9 In one possible embodiment of this application, at least two structural members 120 surround to form a receiving cavity 150, and the vibrating member 110 and the connecting member 130 are both disposed within the receiving cavity 150; a sound insulation member 160 is disposed between two adjacent structural members 120, and the middle part of the sound insulation member 160 protrudes toward the vibrating member 110 to divide the receiving cavity 150 into at least two chambers, and the at least two chambers correspond one-to-one with the at least two structural members 120; wherein, the sound insulation member 160 is a flexible sound insulation member, or the sound insulation member 160 is flexibly connected to the corresponding structural member 120.

[0087] In this embodiment, the sound insulation component 160 can be a block structure with a protrusion in the middle facing the vibrating component 110; the sound insulation component 160 can also be a plate structure with the middle bent towards the vibrating component 110. It should be noted that a gap should be left between the sound insulation component 160 and the vibrating component 110 to avoid affecting the vibration of the vibrating component 110.

[0088] In this embodiment, one or more sound insulation components 160 may be provided between two adjacent structural components 120. To improve the sound insulation effect, refer to... Figure 10 In one possible embodiment of this application, sound insulation members 160 are provided around the vibrating member 110. The sound insulation members 160 are connected end to end to form a ring structure, so that the two structural members 120 and the four sound insulation members 160 surround and form a receiving cavity 150.

[0089] To prevent vibration transmission between the two structural members 120 corresponding to the sound insulation member 160, the sound insulation member 160 is made of a flexible material, or the sound insulation member 160 and the corresponding structural member 120 are flexibly connected, thereby reducing the transmission of vibration and improving the sound insulation effect.

[0090] The sound-generating device 100 of this application embodiment has a sound-insulating member 160 between two adjacent structural members 120. The sound-insulating member 160 divides the receiving cavity 150 to form at least two chambers, so that each structural member 120 has an independent chamber. The sound-insulating member 160 blocks vibration, thereby reducing the possibility that the vibration generated by the structural member 120 will enter other chambers and cause other structural members 120 to vibrate, and reducing the mutual influence when the structural members 120 vibrate.

[0091] To reduce echo interference caused by the vibration of the vibrating element 110 within the receiving cavity 150, refer to Figure 9 In one possible embodiment of this application, the sound insulation member 160 includes a base layer 161 and a sound-absorbing layer 162. The base layer 161 is connected to the corresponding structural member 120, and the sound-absorbing layer 162 is located on the side of the base layer 161 near the vibrating member 110.

[0092] In this embodiment, the base layer 161 is used to provide support for the sound-absorbing layer 162. The base layer 161 can be made of metal or plastic materials. The sound-absorbing layer 162 is bonded to the surface of the base layer 161 and is made of a loose and porous material, such as sound-absorbing cotton or foam material.

[0093] The sound-generating device 100 of this application embodiment has a sound-absorbing layer 162 provided on the sound insulation member 160. The sound-absorbing layer 162 is provided on the side close to the vibrating member 110, that is, forming the inner wall of the receiving cavity 150. When the vibrating member 110 in the receiving cavity 150 vibrates, the vibration wave is transmitted to the sound-absorbing layer 162 and absorbed, thereby reducing the possibility of the vibration wave being reflected and forming an echo interference.

[0094] To minimize the impact of other components on the cavity 150, refer to Figure 9 and Figure 11 In one possible embodiment of this application, the adjusting member 140 is located on the side of the sound insulation member 160 away from the vibrating member 110. The sound insulation member 160 is provided with a through hole 163, and the adjusting member 140 is connected to the connecting member 130 through the through hole 163.

[0095] In this embodiment, the number of adjusting members 140 can be one or more. For example, multiple adjusting members 140 and multiple connecting members 130 are connected in a one-to-one correspondence. When the connecting member 130 includes multiple switching parts 135, multiple adjusting members 140 and multiple connecting parts 133 can also be connected in a one-to-one correspondence. For the sake of simplifying the structure, refer to... Figure 4 and Figure 11 In one possible embodiment of this application, there is one adjusting member 140, which is connected to multiple connecting parts 133 respectively, or, one adjusting member 140 is connected to multiple switching parts 135 respectively, and the adjusting member 140 can adjust each connecting part 130 / switching part 135 individually.

[0096] In this embodiment, the connection between the adjusting member 140 and the connecting member 130 / switching part 135 can be an electrical connection, with a cable passing through the through hole 163 to electrically connect the adjusting member 140 and the connecting member 130 / switching part 135; alternatively, the connection can be a pipe connection, with a pipe passing through the through hole 163 to connect the adjusting member 140 and the connecting member 130 / switching part 135, and the connection can be configured according to the form of the connecting member 130. Furthermore, since the vibration of the vibrating member 110 requires electrical energy, the electrical connection cable between the vibrating member 110 and the external power source can also be run through the through hole 163.

[0097] The sound-generating device 100 of this application embodiment has a small impact on the components inside the cavity 150 because the adjusting member 140 is located on the side of the sound insulation member 160 away from the vibrating member 110, that is, the tuning member is located outside the cavity 150. The through hole 163 is opened on the sound insulation member 160, which facilitates the connection between the adjusting member 140 and the connecting member 130.

[0098] To facilitate the state switching of connector 130, refer to Figure 11 and Figure 12 In one possible embodiment of this application, the connector 130 includes a flexible portion 136, the flexible portion 136 forming a sealing cavity 137; the adjusting member 140 is a pump body, the pump body being connected to the sealing cavity 137, as shown in the reference. Figure 11 The pump body is used to pump fluid into the sealed cavity 137 to switch the corresponding connection 130 to a rigid state, see reference. Figure 12 The pump body is used to pump fluid out of the sealed cavity 137 to switch the corresponding connector 130 to a flexible state.

[0099] In this embodiment, the flexible part 136 is made of a flexible material, such as polyester fiber, polypropylene fiber, rubber, etc. The connector 130 can be made entirely of a flexible material to form the flexible part 136, or the switching part 135 of the connector 130 can be made of a flexible material, and the switching part 135 forms the flexible part 136.

[0100] In this embodiment, the fluid can be a liquid, such as pure water or hydraulic oil, and the corresponding pump body is a hydraulic pump; the fluid can also be a gas, such as air or helium, and the corresponding pump body is an air pump. For example, using an air pump as the pump body and air as the fluid is easy to implement and economical and reliable.

[0101] It should be noted that the ratio of the volume of the sealing cavity 137 to the volume of the connector 130 has a significant impact on the rigidity of the connector 130. When the volume of the sealing cavity 137 is relatively large, even if fluid is pumped into the sealing cavity 137, its rigidity is still relatively small. In order to obtain a more suitable rigidity, the volume of the sealing cavity 137 to the volume of the connector 130 can be 1 / 10 to 1 / 4, for example, the ratio of the two is 1 / 10, 1 / 5, 1 / 4, etc.

[0102] The sound-generating device 100 of this application embodiment has a flexible part 136 forming a sealed cavity 137. The state of the flexible part 136 can be changed by pumping in or out fluid. The structure is simple and easy to implement.

[0103] To improve vocal performance, refer to Figure 2 and Figure 6In one possible embodiment of this application, the vibrating element 110 includes a vibrating body 113 and at least one piezoelectric element 112, the piezoelectric element 112 being connected to the vibrating body 113, and the vibrating body 113 being connected to the connector 130; wherein, the piezoelectric element 112 is used to generate vibration, and the elastic modulus of the vibrating body 113 is less than the elastic modulus of the piezoelectric element 112, so as to amplify the amplitude of the vibration.

[0104] In this embodiment, the piezoelectric body 112 generates vibration through the piezoelectric effect, while the vibrating body 113 is made of a material with a small elastic modulus, which can generate large elastic deformation, thereby amplifying the amplitude of the vibration generated by the piezoelectric body 112.

[0105] In this embodiment, the piezoelectric element 112 is connected to the vibrator 113, and the vibrator 113 is connected to the connector 130. There is one vibrator 113, but there may be one or more piezoelectric elements 112. The multiple piezoelectric elements 112 are centrally symmetrically distributed about the vibrator 113 to improve the output power and enhance the vibration effect. For example, the vibrator 113 has a plate-like structure, and there are two piezoelectric elements 112. Along the thickness direction of the vibrator 113, the two piezoelectric elements 112 are respectively fixedly connected to both sides of the vibrator 113.

[0106] In this embodiment, along the thickness direction of the vibrator 113, the projected profiles of the piezoelectric body 112 and the vibrator 113 may completely or partially overlap. (Refer to...) Figure 2 and Figure 6 In one possible embodiment of this application, the projected profile of the piezoelectric body 112 is smaller than the projected profile of the vibrator 113, so as to form receiving notches 111 at both ends of the piezoelectric body 112.

[0107] The sound-generating device 100 of this application embodiment includes a piezoelectric element 112 and a vibrating body 113 in the vibrating element 110. The piezoelectric element 112 generates vibration, and the vibration amplitude is amplified by the vibrating body 113 to increase the output power, so as to better drive the structural element 120 to generate vibration, and also to compensate for the loss of vibration in the transmission process.

[0108] To achieve bidirectional sound emission from both the inside and outside of the vehicle, refer to Figure 1 and Figure 16 In one possible embodiment of this application, the vehicle body 200 includes a structural plate 210 and a decorative plate 220. The vehicle also includes an electronic device 300 connected to the vehicle body 200. The sound-generating device 100 has two structural components 120, namely the structural plate 210 and the decorative plate 220. The adjusting component 140 is electrically connected to the electronic device 300.

[0109] In this embodiment, the structural plate 210 can be a door panel, roof panel, trunk lid, etc. The structural plate 210 is located on the outside of the vehicle, while the decorative plate 220 is located on the inside of the vehicle. The decorative plate 220 is connected to the corresponding structural plate 210 or vehicle pillar system.

[0110] In this embodiment, the electrical connection between the electronic device 300 and the regulating component 140 can be a wired connection, such as a cable connection, or a wireless connection, such as a wireless communication module connection. The electronic device 300 can send adjustment commands to the regulating component 140 according to the user's needs, and the regulating component 140 controls the corresponding connector 130 to switch states according to the adjustment commands. The electronic device 300 in this embodiment can be a vehicle infotainment system or an electronic unit with control functions over the sound-emitting device 100 in this embodiment, such as an ECU. The electronic device 300 can also be a terminal device interconnected with the vehicle infotainment system, such as a mobile phone, tablet, or PC.

[0111] For example, when the electronic device 300 determines that the user needs sound from outside the vehicle, it controls the adjustment member 140 to pump air into the connector 130 connected to the structural plate 210 and pump air out of the connector 130 connected to the decorative plate 220, thereby transmitting the vibration generated by the vibrating member 110 to the structural plate 210, causing the structural plate 210 to vibrate and produce sound. Correspondingly, when the electronic device 300 determines that the user needs sound from inside the vehicle, it controls the adjustment member 140 to pump air into the connector 130 connected to the decorative plate 220 and pump air out of the connector 130 connected to the structural plate 210, thereby transmitting the vibration generated by the vibrating member 110 to the decorative plate 220, causing the decorative plate 220 to vibrate and produce sound.

[0112] In this embodiment of the vehicle, the structural plate 210 and the decorative plate 220 are configured as structural members 120, with the structural plate 210 facing the outside of the vehicle and the decorative plate 220 facing the inside of the vehicle. The vibrating member 110 of the sound-generating device 100 can drive the structural member 120 and the decorative plate 220 to vibrate respectively, thereby generating sound on the outside or inside of the vehicle. The adjusting member 140 is electrically connected to the electronic device 300 and is controlled by the electronic device 300, making it more convenient and intelligent.

[0113] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made based on the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A sound-generating device, characterized in that, include: Vibrating components, used to generate vibration; At least two structural members are disposed on different sides of the vibrating member, the structural members being used to follow the vibration to produce sound; Each of the structural components is connected to the vibrating component via at least one connector, and the connector includes a rigid base and at least one switching portion. The base is disposed at both ends or sides of the switching portion. The switching portion has a flexible state and a rigid state. When the switching portion switches to the rigid state, the vibration is transmitted to the corresponding structural component through the base. An adjusting member, connected to each of the connecting members, is used to adjust the state of the connecting member.

2. The sound-generating device according to claim 1, characterized in that, Each vibrating element is connected to each of the structural elements by two connecting members, and the two connecting members are respectively disposed at opposite ends of the vibrating element.

3. The sound-generating device according to claim 1, characterized in that, The first side of the connector is connected to the corresponding structural member, and the second side of the connector is provided with at least two connecting parts, which are connected to the vibrating member. The at least two connecting parts are symmetrically arranged about the vibrating member.

4. The sound-generating device according to claim 3, characterized in that, Two switching portions are arranged on the first side and are positioned at the end of the connecting portion away from the vibrating member, wherein the end faces of the connecting portion and the switching portion are all disposed on the switching portion.

5. The sound-generating device according to claim 1, characterized in that, The base is connected to the corresponding structural member, and the switching part is connected to the vibrating member; or, the switching part is connected to the corresponding structural member, and the base is connected to the vibrating member.

6. The sound-generating device according to claim 1, characterized in that, In the thickness direction of the vibrating element, at least one base is provided at each end of the switching part, and the end of the base away from the switching part is respectively provided on the structural member and the vibrating element.

7. The sound-generating device according to claim 1, characterized in that, The base is provided at both ends of the switching part in a direction perpendicular to the thickness of the vibrating element; The base includes: a first base, one end of which is disposed on the vibrating member; and a second base, one end of which is disposed on the structural member, and the other end of which is movably connected to the end of the first base away from the vibrating member, wherein the first base and the second base are both connected to the side end face of the switching part.

8. The sound-generating device according to claim 7, characterized in that, There is a gap between the end of the switching part and the structural member and / or the vibrating member.

9. The sound-generating device according to any one of claims 1 to 8, characterized in that, At least two of the structural members enclose a receiving cavity, and both the vibrating member and the connecting member are disposed within the receiving cavity; A sound insulation component is provided between two adjacent structural components, and the middle part of the sound insulation component protrudes towards the vibrating component to divide the receiving cavity into at least two chambers, and the at least two chambers correspond one-to-one with the at least two structural components; The sound insulation component is a flexible sound insulation component, or the sound insulation component is flexibly connected to the corresponding structural component.

10. The sound-generating device according to claim 9, characterized in that, The sound insulation component includes a base layer and a sound-absorbing layer. The base layer is connected to the corresponding structural component, and the sound-absorbing layer is located on the side of the base layer closer to the vibrating component.

11. The sound-generating device according to claim 9, characterized in that, The adjusting member is located on the side of the sound insulation member away from the vibrating member. The sound insulation member has a through hole, and the adjusting member is connected to the connecting member through the through hole.

12. The sound-generating device according to claim 1, characterized in that, The flexible part has a sealed cavity; The adjusting component is a pump body, which is connected to the sealing cavity. The pump body is used to pump fluid into the sealing cavity to switch the corresponding connector to a rigid state, and to pump the fluid out of the sealing cavity to switch the corresponding connector to a flexible state.

13. The sound-generating device according to claim 1, characterized in that, The vibrating element includes a vibrating body and at least one piezoelectric element, the piezoelectric element being connected to the vibrating body, and the vibrating body being connected to the connecting element; The piezoelectric element is used to generate the vibration, and the elastic modulus of the vibrating body is less than that of the piezoelectric element, so as to amplify the amplitude of the vibration.

14. A vehicle, characterized in that, include: The vehicle body, including structural panels and decorative panels; Electronic devices, connected to the vehicle body; The sound-generating device according to any one of claims 1 to 13, wherein the sound-generating device comprises two structural components, namely the structural plate and the decorative plate, and the adjusting component is electrically connected to the electronic device.

Images