Loudspeaker assembly and loudspeaker

Abstract

The embodiment of the application provides a loudspeaker assembly and a loudspeaker, and belongs to the technical field of sound box equipment. The loudspeaker assembly comprises a connecting piece, the connecting piece is connected with a loudspeaker body to vibrate with the vibration of the loudspeaker body, a piezoelectric functional layer is arranged on the connecting piece, the piezoelectric functional layer comprises a piezoelectric piece and electrode ends arranged on both sides of the piezoelectric piece, and the piezoelectric functional layer is configured to generate polarized charges when the connecting piece vibrates and deforms, so as to output electric energy through the electrode ends. The loudspeaker assembly provided by the embodiment of the application generates electricity in response to the vibration of the connecting piece by using the piezoelectric functional layer, is sensitive in response, and has high vibration energy recovery efficiency for the loudspeaker body.

Description

TECHNICAL FIELD

[0001] The present application relates to a loudspeaker assembly and a loudspeaker. BACKGROUND

[0002] Bluetooth-connected sound box devices are increasingly popular, and sound box devices need to maintain voice wake-up, network connection and other functions for a long time, resulting in rising standby power consumption of sound box devices.

[0003] In related technologies, the vibration energy of a sound box device is recovered using electromagnetic induction principles. For example, a magnet and a coil are arranged in the sound box device, the magnet is driven by the loudspeaker to move relative to the coil, and the magnetic induction line is cut to generate an induced current to power other electrical components.

[0004] However, the electromagnetic induction principle is slow to respond to the micro-vibration of the sound box device, resulting in low efficiency of recovering the vibration energy of the sound box device. SUMMARY

[0005] The present application provides a loudspeaker assembly and a loudspeaker to solve the technical problem of low efficiency of recovering the vibration energy of the loudspeaker in related technologies.

[0006] In one aspect, the present application provides a loudspeaker assembly, comprising:

[0007] a connecting piece connected to the loudspeaker body to vibrate with the vibration of the loudspeaker body;

[0008] a piezoelectric functional layer arranged on the connecting piece, the piezoelectric functional layer comprising a piezoelectric piece and electrode terminals arranged on both sides of the piezoelectric piece;

[0009] The piezoelectric functional layer is configured to generate a polarization charge when the connecting piece vibrates and deforms, and to output electrical energy through the electrode terminals.

[0010] In some possible implementations, further comprising:

[0011] an adjusting piece detachably connected to the connecting piece, the adjusting piece being located at an end of the connecting piece away from the loudspeaker body and being configured to adjust the resonant frequency of the connecting piece to make the connecting piece resonate with the loudspeaker body.

[0012] In some possible implementations, further comprising a fixed magnet for connecting with the loudspeaker body, the fixed magnet being arranged spaced apart from the adjusting piece, and one side of the adjusting piece facing the fixed magnet having magnetism.

[0013] The fixed magnets are configured to generate magnetic interaction force with the adjusting members, so as to make the connecting members vibrate nonlinearly by the magnetic interaction force.

[0014] In some possible implementation manners, the adjusting members are two, and the two adjusting members are arranged on opposite sides of the connecting member.

[0015] Each side of the adjusting member away from the connecting member is spaced apart from a fixed magnet, and the two adjusting members are opposite to each other in the magnetic poles of the opposite fixed magnets.

[0016] In some possible implementation manners, the middle part of the connecting member has a hollow part, the adjusting member is connected with a movable plate, the side of the movable plate away from the adjusting member is provided with an auxiliary adjusting block, and the auxiliary adjusting block and the movable plate are located in the hollow part.

[0017] The movable plate and the auxiliary adjusting block are configured to vibrate relative to the adjusting member at a preset frequency, so as to resonate with the loudspeaker body.

[0018] In some possible implementation manners, the auxiliary adjusting block is located on the same side of the connecting member as the adjusting member, and the weight of the auxiliary adjusting block is less than the weight of the adjusting member.

[0019] In some possible implementation manners, the connecting member is multiple, and the multiple connecting members are connected in a frame structure, and the connecting regions of any two adjacent connecting members are provided with the adjusting members.

[0020] In some possible implementation manners, the connecting member includes a connecting body and multiple cantilever arms arranged on the connecting body, and the connecting body is provided with the adjusting member.

[0021] The multiple cantilever arms are uniformly arranged along the circumference of the connecting body, each of the cantilever arms is connected with the loudspeaker body, and each of the cantilever arms is provided with the piezoelectric functional layer.

[0022] In some possible implementation manners, the connecting member has a fixed end for connecting with the loudspeaker body, the fixed end is located at the middle part of the connecting member, the opposite ends of the connecting member are connected with the adjusting members, and the two adjusting members are located on the same side of the connecting member.

[0023] In another aspect, the embodiments of the present application also provide a loudspeaker, which includes a loudspeaker body and a sound generating part, and the loudspeaker body is provided with the loudspeaker assembly according to any one of the above.

[0024] A circuit module is arranged in the speaker body, the circuit module is electrically connected with the piezoelectric functional layer, and the circuit module is used for receiving electric energy of the piezoelectric functional layer, rectifying, boosting, and outputting a stabilized voltage current.

[0025] A power consumption component is connected with the circuit module to receive the stabilized voltage current.

[0026] The speaker assembly and the speaker provided by the embodiments of the present application directly connect the speaker body through the connecting piece, the connecting piece vibrates with the vibration of the speaker body, and the piezoelectric functional layer is configured to generate polarized electric charges through the piezoelectric piece when the connecting piece vibrates and deforms, so as to output electric energy through the electrode end. The piezoelectric functional layer is rapidly sensitive to micro-amplitude vibration, can convert the small-amplitude vibration deformation of the connecting piece into electric energy output externally, and realizes the recycling of the vibration energy of the speaker body. BRIEF DESCRIPTION OF DRAWINGS

[0027] The drawings incorporated into the specification and constituting a part of the specification show embodiments consistent with the present application and, together with the specification, serve to explain the principles of the present application.

[0028] Figure 1 A structural section view of the speaker body provided by the embodiments of the present application;

[0029] Figure 2 A structural schematic view of the piezoelectric functional layer provided by the embodiments of the present application;

[0030] Figure 3 A structural schematic view of the speaker assembly provided by the embodiments of the present application;

[0031] Figure 4 A structural schematic view of the speaker assembly provided by another embodiment of the present application;

[0032] Figure 5 A structural schematic view of the speaker assembly provided by another embodiment of the present application;

[0033] Figure 6 A structural schematic view of the speaker assembly provided by another embodiment of the present application; Figure 5 A structural schematic view of the speaker assembly in the speaker body;

[0034] Figure 7 A structural schematic view of the speaker assembly provided by another embodiment of the present application;

[0035] Figure 8 A structural schematic view of the speaker assembly in the speaker body; Figure 7 A structural schematic view of the speaker assembly in the speaker body;

[0036] Figure 9 A structural schematic view of the speaker assembly provided by another embodiment of the present application;

[0037] Figure 10 for Figure 9 A schematic diagram of the structure of the loudspeaker assembly within the loudspeaker body;

[0038] Figure 11 This is a schematic diagram of the structure of a speaker assembly provided in another embodiment of this application;

[0039] Figure 12 for Figure 11 A schematic diagram of the structure of the loudspeaker assembly within the loudspeaker body.

[0040] Explanation of reference numerals in the attached figures

[0041] 100. Connector; 110. Fixed end; 120. Connecting body; 130. Cantilever; 140. Hollowed-out part; 150. Movable plate;

[0042] 200, piezoelectric functional layer; 210, piezoelectric element; 220, electrode;

[0043] 300. Adjusting component; 310. Auxiliary adjusting block;

[0044] 400. Fixed magnet; 410. Non-magnetic layer;

[0045] 500. Circuit module;

[0046] 600. Electrical components;

[0047] 700. Vocal part;

[0048] 800. Speaker body.

[0049] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0050] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application.

[0051] As mentioned in the background technology section, with the rapid development of the Internet of Things and smart homes, speakers have evolved from traditional audio playback devices into intelligent terminals integrating voice interaction, environmental perception, and network connectivity. Traditional power supply methods relying on external charging or battery replacement are no longer suitable for the low-power technology trends in speaker devices. Furthermore, the mechanical vibrations generated during speaker sound production can not only cause structural resonance and noise, but may also lead to device displacement, affecting sound quality and operational stability.

[0052] In existing technologies, manufacturers have proposed using the principle of electromagnetic induction to recover the vibrational energy of speaker equipment. For example, a magnet and a coil are placed in the speaker equipment. The magnet is driven by the speaker to move relative to the coil, cutting magnetic field lines and generating an induced current. However, generating electricity using the relative displacement of the magnet and the coil inevitably requires a large displacement space, resulting in a large speaker equipment size. Furthermore, electromagnetic induction is slow to respond to micro-vibrations, leading to poor actual power generation efficiency.

[0053] Based on the above description, one or more embodiments of this application provide a loudspeaker assembly and a loudspeaker. In the loudspeaker assembly, the loudspeaker body is directly connected by a connector. The connector vibrates with the vibration of the loudspeaker body. The piezoelectric functional layer is rapidly and sensitive to micro-vibrations and can convert the small vibration deformation of the connector into electrical energy output to the outside, thereby realizing the recovery and utilization of the vibration energy of the loudspeaker body.

[0054] The following description, in conjunction with the accompanying drawings, illustrates the solutions of the embodiments of this application.

[0055] like Figure 1 and Figure 2 As shown, this application embodiment provides a speaker assembly, including a connector 100, a piezoelectric functional layer 200, and an adjustment member 300.

[0056] The connector 100 is connected to the speaker body 800 and vibrates with the vibration of the speaker body 800. The piezoelectric functional layer 200 is disposed on the connector 100. The piezoelectric functional layer 200 includes a piezoelectric element 210 and electrode terminals 220 disposed on both sides of the piezoelectric element 210. The piezoelectric functional layer 200 is configured such that when the connector 100 vibrates and deforms, the piezoelectric element 210 generates polarized charges to output electrical energy through the electrode terminals 220.

[0057] As can be seen from the above description, the speaker assembly provided in this application embodiment utilizes the vibration deformation of the connector 100 to convert the vibration energy of the speaker body 800 into electrical energy, thereby recovering ineffective vibration energy and extending the speaker's battery life. Compared to electromagnetic induction for recovering vibration energy, the piezoelectric element 210 responds more quickly and efficiently to micro-vibrations, effectively improving the speaker assembly's efficiency in recovering vibration energy from the speaker body 800.

[0058] It should be noted that, in this embodiment, the loudspeaker can be a speaker device that plays audio sources in related technologies. The loudspeaker can be a sealed speaker, a bass reflex speaker, a passive radiator speaker, an acoustic labyrinth speaker, an acoustic metamaterial speaker, or a bandpass speaker, etc. The loudspeaker can be cylindrical, prismatic, or frustum-shaped, etc., and this embodiment does not impose an absolute limitation on this. The loudspeaker includes a loudspeaker body 800 and a sound-emitting part 700. The sound-emitting part 700 vibrates to produce sound, causing the loudspeaker body 800 to vibrate. The connecting member 100 vibrates with the vibration of the loudspeaker body 800.

[0059] For different types of loudspeakers, the mounting position of the loudspeaker assembly can be flexibly adjusted and adapted, as long as it can sense the vibration position of the sound-emitting part 700 as much as possible. For example, in a bandpass speaker, the connector 100 can be set in the rear cavity or the front cavity of the bandpass speaker.

[0060] like Figure 3 As shown, in some embodiments, the connector 100 adopts a rectangular plate structure. The connector 100 is made of a metal material with good elasticity and fatigue strength, such as spring steel, phosphor bronze, or titanium alloy. Alternatively, the connector 100 uses high-performance composite materials such as glass fiber or reinforced resin. The fixing end 110 of the connector 100 is screwed to the speaker body 800, or fixed to the speaker body 800 by welding, high-strength adhesive, or other methods, as long as the speaker assembly as a whole vibrates with the sound vibration of the speaker body 800.

[0061] In this embodiment, the sound-emitting part 700 is a structural component in the speaker body 800 that generates mechanical vibration in response to an electrical signal, such as the diaphragm or cone of the speaker body 800. Of course, the fixed end 110 of the connector 100 should not be directly connected to the sound-emitting part 700 to avoid affecting its normal vibration and thus preventing sound quality degradation. The fixed end 110 can be located in the circumferential area of ​​the sound-emitting part 700, such as the side wall, top wall, or frame of the speaker body 800. The connector 100 only needs to vibrate with the speaker body 800 while avoiding affecting the diaphragm's movement.

[0062] In this embodiment, the piezoelectric element 210 in the piezoelectric functional layer 200 includes a piezoelectric ceramic element, a piezoelectric single crystal element, or a piezoelectric polymer element. For example, the piezoelectric ceramic element uses materials such as lead zirconate titanate, barium titanate, and potassium sodium niobate; the piezoelectric single crystal element uses PMN-PT relaxor ferroelectric single crystal; and the piezoelectric polymer element uses a polyvinylidene fluoride piezoelectric film.

[0063] The piezoelectric functional layer 200 can be attached to the surface of the connector 100 through processes such as screen printing and adhesive curing, and generates electrical energy by sensing the bending and vibration deformation of the connector 100. Here, for example... Figure 2 As shown, in the piezoelectric functional layer 200, the piezoelectric element 210 is clamped by the electrode ends 220 on both sides. The electrode ends 220 collect the charge generated by the vibration and deformation of the connector 100 and output the charge energy to the outside through the wire.

[0064] The piezoelectric functional layer 200 operates based on the positive piezoelectric effect. It directly converts microscopic strain within the material into electrical charge, making it sensitive to vibrational deformation at the 100-micrometer or even nanometer level in the connector. This allows it to efficiently collect the energy from small-amplitude, weak-force mechanical vibrations. In contrast, electromagnetic induction power generation relies on the large-amplitude relative movement between the coil and the magnetic field that cuts magnetic field lines. For the small-amplitude vibrations of the speaker body 800, the relative displacement is insufficient to generate an induced current. Therefore, the piezoelectric functional layer 200 can efficiently recover the vibrational energy of the speaker body 800.

[0065] Furthermore, the piezoelectric functional layer 200 is a material layer attached to the surface of the connector 100, eliminating the need for moving coils and complex magnetic circuits. Its overall structure is flat and simple, making it more suitable for miniaturized and integrated small speaker devices. The piezoelectric functional layer 200 generates electricity through the polarization of the dielectric material and does not generate stray magnetic fields, effectively avoiding electromagnetic interference to the audio circuitry of the speaker body 800 during the power generation process.

[0066] like Figure 3 As shown, in some embodiments, the speaker assembly also includes an adjustment member 300, which is detachably connected to the connector 100. The adjustment member 300 is located at the end of the connector 100 away from the sound-emitting part 700 and is configured to adjust the resonant frequency of the speaker assembly so that the speaker assembly resonates with the speaker body 800.

[0067] The adjusting component 300, as a counterweight adjusting component, can be made of high-density materials, such as tungsten alloy, copper and other metal materials. The adjusting component 300 can be a rectangular block as shown in the figure. The adjusting component 300 and the connecting component 100 are connected by bolts that pass through both of them, or by means of buckles, magnetic adsorption and other methods to achieve a detachable connection with the connecting component 100.

[0068] The adjustable member 300 and the connector 100 are detachably connected. By replacing the adjustable member 300 with one of different weights or changing the position of the adjustable member 300 on the connector 100, the resonant frequency of the speaker assembly can be adjusted accordingly. This allows the connector 100 to be adapted to different models and specifications of speakers, ensuring precise resonance matching between the speaker assembly and the speaker body 800, and improving the efficiency of the piezoelectric functional layer 200 in recovering vibration energy.

[0069] In this embodiment, the connector 100 has a fixed end 110 for connecting to the speaker body 800, and the adjusting member 300 is located at the end of the connector 100 away from the fixed end 110, that is, the free end of the connector 100. The vibration amplitude of the free end of the connector 100 is much greater than that of the fixed end 110. Therefore, the adjusting member 300 can obtain a large displacement when located at the free end. This large vibration displacement is directly transmitted to the piezoelectric functional layer 200, causing the piezoelectric functional layer 200 to undergo drastic deformation, thereby effectively improving the conversion efficiency of mechanical vibration to electrical energy.

[0070] Since the adjustment component 300 can actively adjust the resonant frequency of the speaker assembly, the connector 100 vibrates with the vibration of the speaker body 800. When the speaker body 800 vibrates during operation, the speaker assembly generates electricity while actively absorbing and consuming the resonant noise and vibration energy of the speaker body 800 due to accidental deviation, thereby effectively improving the sound quality of the speaker and enhancing the acoustic performance and stability of the speaker product.

[0071] In addition, the adjustment component 300 itself acts as a counterweight adjustment. By adding, removing, or replacing the adjustment component 300 with different weights at the free end, the resonant frequency of the speaker assembly can be adjusted with high sensitivity. A large range of resonant frequency adjustments can be achieved by adjusting the adjustment component 300 with a small mass range. The entire speaker assembly structure is more compact, which is beneficial for the installation and layout design of small-sized speaker equipment.

[0072] It should be noted that, in this embodiment of the application, in order to achieve a good energy harvesting effect and reduce the risk of resonance noise and movement of the speaker body 800, the resonant frequency setting of the speaker components is changed for different types of speaker devices.

[0073] For example, for a sealed speaker enclosure, the resonant frequency of the speaker assembly is matched to the resonant frequency f of the sealed speaker enclosure. c (The peak frequency of the impedance curve) is consistent. For devices such as bass reflex speakers, passive radiator speakers, and acoustic labyrinth speakers, the resonant frequency of the speaker assembly is matched to the resonant frequency f of the aforementioned devices. h(The second peak frequency of the impedance curve) is consistent. Therefore, when the speaker body 800 vibrates, the speaker assembly attached to the speaker body 800 resonates, converting mechanical energy into electrical energy to generate electricity. At the same time, it generates a reaction force to suppress the vibration of the speaker body 800, thereby improving the overall sound quality and stability of the speaker.

[0074] like Figure 4 As shown, in some embodiments, the speaker assembly further includes a fixed magnet 400 for connection to the speaker body 800. The fixed magnet 400 is spaced apart from the adjustment member 300, and the side of the adjustment member 300 facing the fixed magnet 400 is magnetic. The fixed magnet 400 is configured to generate a magnetic force with the adjustment member 300 to cause the connector 100 to vibrate nonlinearly through the magnetic force.

[0075] In the above embodiments, the fixed magnet 400 is a permanent magnet, such as a high-performance rare earth magnet like neodymium iron boron or samarium cobalt. The fixed magnet 400 is fixed in the speaker body 800 by means of adhesive, snap-fit ​​or bolt connection. The fixed magnet 400 and the adjusting member 300 maintain a certain distance. The fixed magnet and the adjusting member 300 are arranged opposite to each other and do not contact each other.

[0076] Furthermore, there are two adjusting members 300, which are placed on opposite sides of the connecting member 100; each adjusting member 300 has a fixed magnet 400 spaced apart on the side away from the connecting member 100, and the magnetic poles of the two adjusting members 300 are opposite to those of the fixed magnet 400.

[0077] In the above embodiment, the magnetic force between the adjusting member 300 and the opposite fixed magnet 400 is an adsorption force. The adsorption force can guide the connector 100 to increase the displacement vibration amplitude, which is conducive to improving the power generation effect of the piezoelectric functional layer 200.

[0078] like Figure 4 As shown, Figure 4 In this configuration, an adjusting member 300 is provided on each of the opposite sides of the connecting member 100. One adjusting member 300 has its N-pole facing the connecting member 100 and its S-pole facing away from the connecting member 100. A fixed magnet 400 is arranged opposite to this adjusting member 300, with its N-pole facing the S-pole of the adjusting member 300 and its S-pole facing away from the adjusting member 300. Similarly, the other adjusting member 300 has its S-pole facing the connecting member 100 and its N-pole facing away from the connecting member 100. A fixed magnet 400 is arranged opposite to this adjusting member 300, with its S-pole facing the N-pole of the adjusting member 300 and its N-pole facing away from the adjusting member 300.

[0079] Therefore, when the connector 100 vibrates, both sides are simultaneously subjected to nonlinear magnetic adsorption in opposite but symmetrical directions. The symmetrical magnetic adsorption can enhance the nonlinear vibration effect of the connector 100, thereby widening the bandwidth of vibration energy collection. The speaker assembly is more adaptable to frequency changes, and the piezoelectric functional layer 200 can maintain a high response to mechanical vibrations with a wider frequency distribution, which is beneficial to improving the vibration energy capture effect of the piezoelectric functional layer 200 under variable vibration conditions.

[0080] In this example, the fixed end 110 of the connector 100 is fixed to the top wall frame of the speaker body 800. The preset vibration direction of the connector 100 is approximately left-right vibration. Therefore, fixed magnets 400 are respectively provided on the left and right sides of the connector 100. The two fixed magnets 400 arranged symmetrically can prevent the connector 100 from being biased or laterally torsional due to unilateral magnetic attraction force, and ensure stable nonlinear vibration of the connector 100 in the preset direction.

[0081] In some embodiments, a non-magnetic layer 410 is provided on the side of the fixed magnet 400 facing the adjusting member 300, and the non-magnetic layer 410 is used to separate the fixed magnet 400 and the adjusting member 300.

[0082] Here, the non-magnetic layer 410 can be made of non-magnetic materials, such as inorganic materials like epoxy resin, plastic, or ceramic sheets, or non-ferromagnetic metals like copper or aluminum. The non-magnetic layer 410 is fixed to the surface of the fixed magnet 400 by coating or bonding, thus creating a separation between the fixed magnet 400 and the adjusting member 300.

[0083] During the vibration of the connector 100, if the amplitude of the connector 100 is too large or the distance between the connector 100 and the fixed magnet 400 is too small, the connector 100 may easily attract each other directly. Setting a non-magnetic layer 410 can avoid the problem of the connector 100 and the fixed magnet 400 sticking together due to direct contact, which is beneficial to maintaining the stable nonlinear vibration of the connector 100.

[0084] like Figure 5 and Figure 6 As shown, in some embodiments, the connector 100 has a hollow portion 140 in the middle, the adjusting member 300 is connected to a movable plate 150, and an auxiliary adjusting block 310 is provided on the side of the movable plate 150 away from the adjusting member 300. Both the auxiliary adjusting block 310 and the movable plate 150 are located in the hollow portion 140. The movable plate 150 and the auxiliary adjusting block 310 are configured to vibrate relative to the adjusting member 300 at a preset frequency to resonate with the speaker body 800.

[0085] In the above embodiment, the hollow portion 140 is a rectangular hollow area located in the middle of the connector 100. One end of the movable plate 150 is connected to the adjusting member 300 or the connector 100, and the other end is a free end. An auxiliary adjusting block 310 is connected to the free end of the movable plate 150. By setting the auxiliary adjusting block 310 and the movable plate 150, the speaker assembly has two different resonant frequencies, thereby improving the efficiency of collecting electrical energy.

[0086] As an alternative implementation, the auxiliary adjustment block 310 and the adjustment member 300 are located on the same side of the connector 100, and the weight of the auxiliary adjustment block 310 is less than the weight of the adjustment member 300. Here, the auxiliary adjustment block 310 and the adjustment member 300 can be made of the same material, and the connection method between the auxiliary adjustment block 310 and the movable plate 150 can refer to the connection method of the adjustment member 300 on the connector 100.

[0087] Furthermore, there are multiple connectors 100, which are connected end to end to form a frame structure, and an adjustment member 300 is provided in the connection area of ​​any two adjacent connectors 100.

[0088] like Figure 7 and Figure 8 As shown, for example, four connectors 100 are provided, which are connected end to end to form a rectangular frame structure. Any two adjacent connectors 100 share a common adjusting member 300 at their connection nodes.

[0089] Preferably, the four adjusting parts 300 on the four connectors 100 are of the same size and weight, the four connectors 100 are arranged symmetrically in pairs, and each connector 100 has a fixed end 110 in the middle position. The fixed ends 110 of the four connectors 100 are fixed together on the top wall of the speaker body 800.

[0090] Multiple connectors 100 are integrated into a frame structure, which can more efficiently transfer vibration energy to different connectors 100. The adjustment components 300 at each connection node adjust the resonant frequency of the speaker assembly, which is conducive to exciting a more stable vibration mode of the frame structure, and facilitates the improvement of the energy harvesting efficiency and stability of the subsequent piezoelectric functional layer 200.

[0091] Furthermore, compared to multiple independently set connectors 100, integrating multiple connectors 100 into a frame structure can cover a larger installation area in a compact form, thereby more effectively receiving vibration energy distributed on the same vibration plane.

[0092] As an alternative implementation, the connectors 100 may also be used in other quantities, such as a triangular frame structure composed of three connectors 100 or a hexagonal frame structure composed of six connectors 100, which will not be described in detail in this embodiment.

[0093] like Figure 9 and Figure 10 As shown, in some embodiments, the connector 100 includes a connector body 120 and a plurality of cantilever arms 130 disposed on the connector body 120. The connector body 120 is provided with an adjustment member 300. The plurality of cantilever arms 130 are evenly spaced along the circumference of the connector body 120. Each cantilever arm 130 has a fixed end 110 at one end away from the connector body 120. Each cantilever arm 130 is provided with a piezoelectric functional layer 200.

[0094] The aforementioned connecting body 120 and cantilever 130 adopt an integral molding structure. The connecting body 120 is located at the central connection point of multiple cantilever 130s. Multiple cantilever 130s extend radially at uniform intervals along the circumference of the connecting body 120. The fixed ends 110 on multiple cantilever 130s are all fixedly connected to the speaker body 800.

[0095] Therefore, the evenly distributed multiple cantilever arms 130 can respond to vibration excitation from different directions of the speaker body 800. When the vibration mode of the speaker body 800 is complex and varied, one or more of the multiple cantilever arms 130 can respond to the vibration direction corresponding to the speaker body 800, thereby enabling the speaker assembly to capture mechanical vibration energy to the maximum extent and convert it into electrical energy through the piezoelectric functional layer 200 on each cantilever arm 130, thereby improving the overall energy harvesting efficiency of the speaker assembly.

[0096] Here, the piezoelectric functional layers 200 on multiple cantilever 130 can be connected in parallel and output to an external circuit module 500 through an output port.

[0097] Furthermore, the cantilever 130 is bent in a direction away from the connecting body 120, and the resultant force of the multiple cantilever 130s is in the same direction as the vibration direction of the sound-generating part 700.

[0098] In the above embodiments, the bending angles of the multiple cantilever arms 130 relative to the connecting body 120 are the same, the resultant force direction of the multiple cantilever arms 130 is the vector synthesis direction of the vibration force generated by each of the multiple cantilever arms 130 when they are excited by the vibration of the speaker body 800, and the vibration direction of the sound-emitting part 700 is usually the axial reciprocating movement direction of the diaphragm.

[0099] The resultant force direction of the multiple cantilever 130 is the same as the vibration direction of the sound-generating part 700, which can ensure that the mechanical vibration energy captured by the connector 100 is effectively coupled to the vibration direction of the sound-generating part 700, thereby amplifying the overall deformation of the piezoelectric functional layer 200 and facilitating the improvement of electrical power output.

[0100] Furthermore, when the direction of the resultant vibration force of the multiple cantilever 130 is the same as the vibration direction of the sound-generating part 700, the connector 100 can improve the more precise vibration energy absorption effect, effectively offset and consume the resonance energy of the speaker body 800, thereby ensuring the stability of the speaker's acoustic performance.

[0101] Figure 9 In this configuration, the cantilever 130 bends relative to the connecting body 120 via an arc curve. This design minimizes stress concentration at the bend, preventing fatigue fracture of the cantilever 130 under long-term vibration and enhancing the reliability of the speaker assembly. Alternatively, the cantilever 130 may be bent at a 90° angle relative to the connecting body 120. This high-angle bend makes the vibration transmission path of the cantilever 130 more sensitive, allowing for more precise control of the resultant force direction of multiple cantilever 130s. The bending design of the cantilever 130 relative to the connecting body 120 can be flexibly adjusted for different application scenarios.

[0102] like Figure 11 and Figure 12 As shown in the embodiment of this application, the fixed end 110 is located in the middle part of the connector 100, and an adjusting member 300 is connected to each of the opposite ends of the connector 100. The two adjusting members 300 are located on the same side of the connector 100.

[0103] The two adjusting members 300 mentioned above are located on the same side of the connector 100, and the fixed end 110 of the connector 100 is located on the opposite side of the adjusting member 300. At the same time, piezoelectric functional layers 200 are arranged on both opposite sides of the connector 100.

[0104] When the sound-generating part 700 vibrates, the vibration energy is simultaneously transmitted to the free ends on both sides through the fixed end 110 in the middle of the connector 100. Since the two ends of the connector 100 are symmetrically arranged, the inertial forces generated by the two adjusting parts 300 are balanced. This arrangement can reduce the torsional torque or lateral shear force generated by the connector 100 on the fixed end 110 during vibration, reduce the mechanical stress at the fixed end 110, and help improve the stability and long-term reliability of the speaker assembly.

[0105] Another embodiment of this application also provides a loudspeaker, including a loudspeaker body 800 and a sound-emitting part 700, wherein the loudspeaker body 800 is provided with a loudspeaker assembly as in any of the above embodiments.

[0106] Since the speaker body 800 of the speaker is provided with a speaker assembly as in any of the above embodiments, it has all the advantages of a speaker assembly.

[0107] In some embodiments, such as Figure 1 As shown, the loudspeaker also includes a circuit module 500 and an electrical component 600. The circuit module 500 is disposed in the loudspeaker body 800 and is electrically connected to the piezoelectric functional layer 200. The circuit module 500 is used to receive electrical energy from the piezoelectric functional layer 200 and rectify and boost the output of a regulated current. The electrical component 600 is connected to the circuit module 500 to receive the regulated current.

[0108] The circuit module 500 described above is electrically connected to the electrodes of the piezoelectric functional layer 200 via wires. For example, the circuit module 500 includes a rectifier unit, a boost unit, and a voltage regulator unit.

[0109] The rectifier unit typically consists of a bridge rectifier circuit, used to convert the AC signal generated by the piezoelectric functional layer 200 into DC power. The boost unit uses a DC-DC boost converter to boost the rectified, unstable low-voltage DC power to a usable voltage. The voltage regulator unit uses a low-dropout linear regulator or a switching regulator chip to output a stable DC voltage, providing reliable power to the subsequent power-consuming components 600. Here, the rectifier unit, boost unit, and voltage regulator unit in the circuit module 500 can use components from related technologies, which will not be elaborated further in this embodiment.

[0110] The power-consuming component 600 is electrically connected to the output of the circuit module 500, receiving and consuming processed regulated current. The power-consuming component 600 may be a low-power unit such as a rechargeable battery, ambient light, microprocessor, sensor, or Bluetooth communication module inside a speaker assembly or speaker device.

[0111] The speaker assembly directly supplies the collected electrical energy to the speaker's own low-power components 600, which can effectively reduce the speaker equipment's dependence on external power sources, extend battery life, and thus help reduce the overall energy consumption of the speaker equipment and improve its performance.

[0112] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0113] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope.

Claims

1. A loudspeaker assembly, characterized in that, include: A connector (100) is connected to a speaker body (800) to vibrate with the vibration of the speaker body (800); A piezoelectric functional layer (200) is disposed on the connector (100). The piezoelectric functional layer (200) includes a piezoelectric element (210) and electrode terminals (220) disposed on both sides of the piezoelectric element (210). The piezoelectric functional layer (200) is configured such that when the connector (100) vibrates and deforms, the piezoelectric element (210) generates polarization charge to output electrical energy through the electrode end (220); An adjusting member (300) is detachably connected to the connecting member (100). The adjusting member (300) is located at the end of the connecting member (100) away from the speaker body (800) and is configured to adjust the resonant frequency of the speaker assembly so that the speaker assembly resonates with the speaker body (800). The connector (100) has a hollowed-out portion (140) in the middle. The adjusting member (300) is connected to a movable plate (150). An auxiliary adjusting block (310) is provided on the side of the movable plate (150) away from the adjusting member (300). The auxiliary adjusting block (310) and the movable plate (150) are both located in the hollowed-out portion (140). One end of the movable plate (150) is connected to the adjusting member (300) or the connector (100), and the other end of the movable plate (150) is connected to the auxiliary adjusting block (310). The movable plate (150) and the auxiliary adjustment block (310) are configured to vibrate relative to the adjustment member (300) at a preset frequency to resonate with the speaker body (800).

2. The loudspeaker assembly according to claim 1, characterized in that, It also includes a fixed magnet (400) for connecting to the speaker body (800), the fixed magnet (400) being spaced apart from the adjustment member (300), and the adjustment member (300) having magnetism on the side facing the fixed magnet (400); The fixed magnet (400) is configured to generate a magnetic force with the adjusting member (300) to cause the connecting member (100) to vibrate nonlinearly through the magnetic force.

3. The loudspeaker assembly according to claim 2, characterized in that, There are two adjusting members (300), which are respectively placed on opposite sides of the connecting member (100); Each of the adjustment members (300) is provided with a fixed magnet (400) at intervals on the side away from the connector (100), and the magnetic poles of the two adjustment members (300) facing the opposite fixed magnets (400) are opposite.

4. The loudspeaker assembly according to claim 1, characterized in that, The auxiliary adjustment block (310) and the adjustment member (300) are located on the same side of the connector (100), and the weight of the auxiliary adjustment block (310) is less than the weight of the adjustment member (300).

5. The loudspeaker assembly according to any one of claims 1 to 4, characterized in that, The connector (100) has multiple components, and the multiple connectors (100) are connected end to end to form a frame structure. The connection area of ​​any two adjacent connectors (100) is provided with the adjustment component (300).

6. The loudspeaker assembly according to any one of claims 1 to 4, characterized in that, The connector (100) includes a connector body (120) and a plurality of cantilever arms (130) disposed on the connector body (120), and the adjusting member (300) is disposed on the connector body (120). Multiple cantilever arms (130) are evenly spaced along the circumferential distance of the connecting body (120), each cantilever arm (130) is connected to the speaker body (800), and each cantilever arm (130) is provided with the piezoelectric functional layer (200).

7. The loudspeaker assembly according to any one of claims 1 to 4, characterized in that, The connector (100) has a fixed end (110) for connecting to the speaker body (800), the fixed end (110) is located in the middle of the connector (100), and an adjustment member (300) is connected to each of the opposite ends of the connector (100), the two adjustment members (300) are located on the same side of the connector (100).

8. A loudspeaker, characterized in that, It includes a speaker body (800) and a sound-emitting part (700), wherein the speaker body (800) is provided with a speaker assembly as described in any one of claims 1 to 7; Circuit module (500), the circuit module (500) is disposed in the speaker body (800), the circuit module (500) is electrically connected to the piezoelectric functional layer (200), the circuit module (500) is used to receive the electrical energy of the piezoelectric functional layer (200) and rectify and boost the voltage to output a regulated current; Electrical component (600) is connected to the circuit module (500) to receive the regulated current.

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