A moving-coil piezoelectric composite loudspeaker

Abstract

The utility model discloses a moving coil piezoelectric composite loudspeaker still includes setting the heat dissipation casing of loudspeaker main body outside, the inside of heat dissipation casing is provided with the fin, the fin installs in the end of loudspeaker main body far away from the loudspeaker mouth, one side surface of heat dissipation casing is opened to the symmetry and is provided with the heat dissipation mouth, can high -efficiently export loudspeaker main body heat -generating, avoid heat accumulation and lead to performance attenuation, guarantee loudspeaker stable operation under high -power scene, and, heat dissipation casing adopts split type design, and cooperate the accurate splicing of guide rod and guide hole, the quick location of flap and limit block and the convenient locking structure of knob screw, have promoted the convenience of component assembly, overhaul and maintenance greatly, and multiple positioning locking structure can resist the work vibration, ensure that the whole connection is firm, and give consideration to the heat dissipation efficiency and structural reliability.

Description

Technical Field

[0001] This utility model relates to the technical field, specifically to a moving-coil piezoelectric composite loudspeaker. Background Technology

[0002] As a core component of electroacoustic conversion, loudspeakers are widely used in audio equipment, automotive electronics, smart devices, and other fields, and their performance directly determines the audio output quality. Currently, mainstream loudspeakers are mainly divided into two categories: dynamic and piezoelectric. Dynamic loudspeakers produce sound by driving the diaphragm to vibrate through the force of the voice coil in a magnetic field. They have the advantages of good mid-low frequency response and high sound pressure level, but their high frequency resolution is insufficient, and the voice coil heating can easily lead to performance degradation. Piezoelectric loudspeakers use the inverse piezoelectric effect of piezoelectric ceramics to drive the vibrator to produce sound. They have excellent high frequency response and small size, but their mid-low frequency output is weak and their dynamic range is limited.

[0003] Although the above-mentioned applications meet the user's needs to a certain extent, there are still some defects in the use process. The specific problems are as follows: after the speaker has been working for a long time, the temperature will be too high, which will cause changes in the magnetic field of the magnetic gap. Based on this, this utility model designs a moving coil piezoelectric composite speaker to solve the above problems. Utility Model Content

[0004] This invention provides a moving-coil piezoelectric composite loudspeaker that can efficiently dissipate heat from the loudspeaker body, preventing heat buildup that could lead to performance degradation and ensuring stable operation of the loudspeaker in high-power scenarios. Furthermore, the heat dissipation housing adopts a split design, which, combined with the precise splicing of guide rods and guide holes, the quick positioning of flip plates and limit blocks, and the convenient locking structure of knob screws, greatly improves the convenience of component assembly, inspection, and maintenance. At the same time, the multi-positioning and locking structure can resist working vibrations and ensure a stable overall connection, taking into account both heat dissipation efficiency and structural reliability, and can effectively solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a moving-coil piezoelectric composite loudspeaker, further comprising a heat dissipation housing disposed outside the loudspeaker body, wherein a heat dissipation fin is disposed inside the heat dissipation housing, the heat dissipation fin is installed at the end of the loudspeaker body away from the sound outlet, and heat dissipation vents are symmetrically opened on one side surface of the heat dissipation housing.

[0006] As a preferred embodiment of the moving-coil piezoelectric composite loudspeaker of this utility model, the heat dissipation housing is composed of a first side housing and a second side housing, and adopts a split design.

[0007] In a preferred embodiment of the present invention, a cooling fan is installed on the side of the heat sink away from the speaker body.

[0008] In a preferred embodiment of the present invention, a guide hole is symmetrically provided on one side surface of the first side housing, and guide rods are symmetrically fixedly connected to the opposite sides of the second side housing and the first side housing. The guide rods are slidably connected to the first side housing through the guide hole.

[0009] As a preferred embodiment of the present invention, the surface of the second side housing is rotatably connected to a flap, and the surface of the first side housing is rotatably connected to a limiting block. A limiting groove is formed on the surface of the flap, and the limiting block passes through the limiting groove through the surface of the flap and abuts against the flap.

[0010] As a preferred embodiment of the present invention, the limiting block and the flip plate are threadedly connected with locking screws, and one end of the locking screw is fixedly connected with a knob.

[0011] In a preferred embodiment of the present invention, a positioning block is fixedly connected to the surface of the flap, and the positioning block and the limiting block abut against each other.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This solution constructs a multi-dimensional heat dissipation system using heat sinks, cooling fans, and a heat dissipation housing to specifically address the heat generation problem of dynamic-coil piezoelectric composite loudspeakers. The heat sinks are directly attached to the heat-generating end of the loudspeaker body, rapidly conducting heat generated by the dynamic coil's energization and the high-frequency vibration of the piezoelectric components. The cooling fans actively accelerate airflow within the housing, forming convection channels with symmetrical heat dissipation vents. This significantly improves efficiency compared to traditional passive cooling. This structure effectively avoids problems such as voice coil burnout and piezoelectric ceramic plate performance degradation caused by heat accumulation, ensuring stable operation of the loudspeaker under high-power output scenarios and extending its service life.

[0014] The heat dissipation housing adopts a split design, and precise splicing is achieved through the sliding cooperation of the guide rod and the guide hole, which solves the problem of disassembling and assembling the integrated housing. The rotation cooperation of the flip plate and the limit block can quickly complete the initial positioning of the housing, and the locking screw controlled by the knob achieves rigid fastening. Opening and closing and fixing can be completed without tools. This design not only simplifies the installation process of components such as speaker body and heat sink, but also facilitates later inspection and maintenance. At the same time, it can be adapted to different specifications of speaker body, improving the structural versatility.

[0015] The guide rod and guide hole restrict the movement trajectory of the housing to avoid misalignment during splicing. The positioning block guides the limit block to accurately engage with the limit groove to achieve initial positioning. The locking screw eliminates gaps through thread pre-tightening to prevent structural loosening caused by speaker vibration. This triple protection ensures the integrity of the heat dissipation channel and the stability of airflow, while reducing frictional losses between components, taking into account both structural reliability and service life. Attached Figure Description

[0016] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0017] In the attached diagram:

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the cooling fan of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the guide rod of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the flip plate of this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the locking screw of this utility model;

[0023] Numbering on the map:

[0024] 1. Speaker body;

[0025] 2. Heat dissipation housing; 201. Side housing one; 202. Side housing two;

[0026] 3. Heat sink; 4. Heat dissipation vent; 5. Cooling fan; 6. Guide hole; 7. Guide rod; 8. Flip plate; 9. Limiting groove; 10. Limiting block; 11. Locking screw; 12. Knob; 13. Positioning block. Detailed Implementation

[0027] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0028] Example: Figure 1-5 As shown, the present invention provides a technical solution: a moving-coil piezoelectric composite loudspeaker, including a loudspeaker body 1 and a heat dissipation shell 2 disposed outside the loudspeaker body 1. The heat dissipation shell 2 is provided with heat dissipation fins 3 inside. The heat dissipation fins 3 are installed at the end of the loudspeaker body 1 away from the sound outlet. Heat dissipation vents 4 are symmetrically opened on one side surface of the heat dissipation shell 2.

[0029] In this implementation scheme: a heat dissipation shell 2 is provided on the outside of the speaker body 1, and a heat sink 3 is installed inside the heat dissipation shell 2. The installation position of the heat sink 3 is clearly defined as the end of the speaker body 1 away from the sound outlet. In addition, heat dissipation vents 4 are symmetrically opened on one side surface of the heat dissipation shell 2, which fills the gap of traditional dynamic piezoelectric composite speakers lacking a targeted heat dissipation structure. The heat sink 3 directly contacts the heat-generating end of the speaker body 1, which can quickly conduct the heat generated during the sound production process. The heat dissipation shell 2 forms a closed and orderly heat dissipation space. With the symmetrically opened heat dissipation vents 4, a natural convection channel is constructed, so that the heat conducted by the heat sink 3 can be quickly discharged, avoiding the accumulation of heat inside the speaker. The heat dissipation structure and the speaker body 1 are externally assembled, which does not affect the internal acoustic structure and sound production performance of the speaker, and takes into account both heat dissipation requirements and sound quality assurance.

[0030] Furthermore:

[0031] like Figures 1 to 5 As shown:

[0032] In an optional embodiment, the heat dissipation housing 2 consists of a first side housing 201 and a second side housing 202, and adopts a split design.

[0033] In this embodiment, the problem of inconvenient disassembly and assembly of the integrated heat sink 2 is solved. The split design allows the heat sink 2 to be quickly opened and closed by separating the first side shell 201 and the second side shell 202, which facilitates the installation, maintenance or replacement of the internal heat sink 3 and the speaker body 1.

[0034] Furthermore:

[0035] like Figures 1 to 5 As shown:

[0036] In an optional embodiment, a cooling fan 5 is installed on the side of the heat sink 3 away from the speaker body 1.

[0037] In this embodiment, a cooling fan 5 is installed on the side of the heat sink 3 away from the speaker body 1, forming a composite heat dissipation structure of heat sink 3 and cooling fan 5. This overcomes the limitation of low efficiency in traditional passive heat dissipation. The cooling fan 5 can actively accelerate the airflow inside the heat sink housing 2, so that the heat on the surface of the heat sink 3 is quickly carried away. This is suitable for high-power operating scenarios. When the moving coil piezoelectric composite speaker is outputting at high power, the heat intensity increases significantly. The active heat dissipation of the cooling fan 5 can effectively control the temperature of the speaker body 1 and avoid problems such as voice coil burnout and piezoelectric ceramic plate performance degradation caused by overheating. The cooling fan 5 is installed on the side of the heat sink 3 away from the speaker body 1 to avoid fan vibration being directly transmitted to the speaker body 1 and reduce interference with acoustic performance.

[0038] Furthermore:

[0039] like Figures 1 to 5 As shown:

[0040] In an optional embodiment, guide holes 6 are symmetrically provided on one side surface of side housing 201, and guide rods 7 are symmetrically fixedly connected to the opposite sides of side housing 202 and side housing 201. The guide rods 7 are slidably connected to side housing 201 through the guide holes 6.

[0041] In this embodiment: symmetrical guide holes 6 are opened on side shell 1 201, and guide rods 7 are fixed at corresponding positions on side shell 2 202. The guide rods 7 pass through the guide holes 6 to realize the sliding connection between the two shells, providing precise positioning for the splicing of the split heat dissipation shell 2. Through the cooperation of the guide rods 7 and the guide holes 6, offset and misalignment during the splicing of the two shells are avoided, ensuring that the structure of the heat dissipation shell 2 is regular after closing, ensuring the integrity of the internal heat dissipation channel, limiting the relative movement trajectory of the two shells, making the opening and closing process smoother, reducing mechanical wear during splicing, extending the service life of the heat dissipation shell 2, and simplifying the installation process. During assembly, the two shells can be quickly aligned by simply sliding the guide rods 7 and the guide holes 6, without the need for repeated adjustments, thus improving assembly efficiency.

[0042] Furthermore:

[0043] like Figures 1 to 5 As shown:

[0044] In an optional embodiment, a flap 8 is rotatably connected to the surface of the second side shell 202, and a limiting block 10 is rotatably connected to the surface of the first side shell 201. A limiting groove 9 is formed on the surface of the flap 8, and the limiting block 10 passes through the limiting groove 9 through the surface of the flap 8 and abuts against the flap 8.

[0045] In this implementation scheme: Side shell 202 is rotatably connected to flap 8, and side shell 10 is rotatably connected to limiting block 10. Flap 8 has a limiting groove 9, and limiting block 10 passes through the limiting groove 9 and abuts against flap 8 to achieve initial fixation of both shells and quick limiting after the heat dissipation shell 2 is closed. Through the mechanical cooperation between flap 8 and limiting block 10, the initial locking of both shells can be completed without the aid of tools to prevent the shells from accidentally opening during use. The design of limiting groove 9 provides a suitable locking space for limiting block 10 to ensure stability after abutment.

[0046] Furthermore:

[0047] like Figures 1 to 5 As shown:

[0048] In an optional embodiment, the surfaces of the limiting block 10 and the flap 8 are threadedly connected with locking screws 11, and one end of the locking screw 11 is fixedly connected with a knob 12.

[0049] In this embodiment: a locking screw 11 is added to the surface of the limiting block 10 and the flip plate 8. A knob 12 is fixed to one end of the locking screw 11, and the two are fastened by threaded connection, which upgrades the initial mechanical limiting to rigid locking. The thread preload of the locking screw 11 completely eliminates the gap between the limiting block 10 and the flip plate 8, avoids the limiting structure from loosening due to vibration when the speaker is working, ensures the closure and sealing of the heat dissipation shell 2, and ensures the airflow stability of the heat dissipation channel. The design of the knob 12 realizes tool-free operation. It can be manually turned to complete the locking or disassembly without the need for screwdrivers or other auxiliary tools, which improves the convenience of maintenance.

[0050] Furthermore:

[0051] like Figures 1 to 5 As shown:

[0052] In an optional embodiment, a positioning block 13 is fixedly connected to the surface of the flap 8, and the positioning block 13 abuts against the limiting block 10.

[0053] In this embodiment: a positioning block 13 is fixedly connected to the surface of the flip plate 8. The positioning block 13 abuts against the limiting block 10, providing a precise positioning reference for the limiting block 10. When the limiting block 10 enters the limiting groove 9, the positioning block 13 can quickly guide the limiting block 10 to the preset abutment position, avoiding locking failure caused by the rotation angle deviation of the limiting block 10, and improving assembly efficiency.

[0054] Working principle: A heat dissipation shell 2 is installed on the outside of the speaker body 1, and a heat sink 3 is installed inside the heat dissipation shell 2. The installation position of the heat sink 3 is clearly defined as the end of the speaker body 1 away from the sound outlet. In addition, heat dissipation vents 4 are symmetrically opened on one side surface of the heat dissipation shell 2, filling the gap of traditional moving-coil piezoelectric composite speakers lacking a targeted heat dissipation structure. The heat sink 3 is in direct contact with the heat-generating end of the speaker body 1, which can quickly conduct the heat generated during sound production. The heat dissipation shell 2 forms a closed and orderly heat dissipation space, which, together with the symmetrically opened heat dissipation vents 4, creates a natural convection channel, allowing the heat conducted by the heat sink 3 to be quickly discharged, avoiding heat accumulation inside the speaker. The heat dissipation structure is externally assembled with the speaker body 1 and does not affect the internal acoustics of the speaker. The structure and sound performance balance heat dissipation requirements with sound quality assurance, solving the problem of inconvenient disassembly and assembly of the integrated heat sink 2. The split design allows the heat sink 2 to be quickly opened and closed by separating the side shell 1 201 and the side shell 2 202, facilitating the installation, maintenance, or replacement of the internal heat sink 3 and speaker body 1. A cooling fan 5 is installed on the side of the heat sink 3 away from the speaker body 1, forming a composite heat dissipation structure of heat sink 3 and cooling fan 5. This overcomes the limitation of low efficiency in traditional passive heat dissipation. The cooling fan 5 can actively accelerate the airflow inside the heat sink 2, so that the heat on the surface of the heat sink 3 is quickly removed. It is suitable for high-power operating scenarios. When the moving-coil piezoelectric composite speaker is outputting at high power, the heat intensity increases significantly. The active heat dissipation of the cooling fan 5 can effectively control the heat generation. To prevent overheating and potential issues like voice coil burnout and piezoelectric ceramic plate performance degradation, the cooling fan 5 is installed on the side of the heat sink 3 furthest from the speaker body 1. This prevents fan vibration from being directly transmitted to the speaker body 1, reducing interference with acoustic performance. Side housing 1 (201) has symmetrically placed guide holes 6, and side housing 2 (202) has correspondingly fixed guide rods 7. The guide rods 7 pass through the guide holes 6 to achieve a sliding connection between the two side housings, providing precise positioning for the assembly of the split heat sink housing 2. The cooperation between the guide rods 7 and the guide holes 6 prevents misalignment or displacement during assembly, ensuring a neat structure after the heat sink housing 2 is closed, protecting the integrity of the internal heat dissipation channels, limiting the relative movement trajectory of the two side housings, making the opening and closing process smoother, and reducing the impact of assembly issues. Mechanical wear is reduced, extending the service life of the heat sink housing 2 and simplifying the installation process. During assembly, the two housings can be quickly aligned simply by sliding the guide rod 7 with the guide hole 6, eliminating the need for repeated adjustments and improving assembly efficiency. Side housing 202 is rotatably connected to the flap 8, and side housing 10 is rotatably connected to the limiting block 10. The flap 8 has a limiting groove 9, and the limiting block 10 passes through the limiting groove 9 and abuts against the flap 8, achieving initial fixation of the two housings and quick limiting after the heat sink housing 2 is closed. Through the mechanical cooperation between the flap 8 and the limiting block 10, the initial locking of the two housings can be completed without the aid of tools, preventing the housings from accidentally opening during use. The design of the limiting groove 9 provides a suitable locking space for the limiting block 10, ensuring stability after abutment.Locking screws 11 are added to the surfaces of the limiting block 10 and the flip plate 8. A knob 12 is fixed to one end of the locking screw 11, and the two are fastened together via a threaded connection. This upgrades the initial mechanical limiting to a rigid locking mechanism. The pre-tightening force of the locking screw 11 completely eliminates the gap between the limiting block 10 and the flip plate 8, preventing the limiting structure from loosening due to vibration during speaker operation. This ensures the sealing of the heat sink 2 and the stability of airflow in the heat dissipation channel. The knob 12 is designed for tool-free operation; it can be manually turned to lock or disassemble without the need for screwdrivers or other auxiliary tools, improving maintenance convenience. A positioning block 13 is fixedly connected to the surface of the flip plate 8. The positioning block 13 abuts against the limiting block 10, providing a precise positioning reference for the limiting block 10. When the limiting block 10 enters the limiting groove 9, the positioning block 13 can quickly guide the limiting block 10 to the preset abutment position, preventing locking failure due to deviation in the rotation angle of the limiting block 10 and improving assembly efficiency.

[0055] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A moving-coil piezoelectric composite loudspeaker, comprising a loudspeaker body (1), characterized in that: It also includes a heat dissipation housing (2) disposed outside the speaker body (1), and a heat dissipation fin (3) is disposed inside the heat dissipation housing (2). The heat dissipation fin (3) is installed at the end of the speaker body (1) away from the sound outlet, and heat dissipation vents (4) are symmetrically opened on one side surface of the heat dissipation housing (2).

2. The moving-coil piezoelectric composite loudspeaker according to claim 1, characterized in that, The heat dissipation housing (2) consists of side housing one (201) and side housing two (202), and adopts a split design.

3. A moving-coil piezoelectric composite loudspeaker according to claim 2, characterized in that, A cooling fan (5) is installed on the side of the heat sink (3) away from the speaker body (1).

4. A moving-coil piezoelectric composite loudspeaker according to claim 3, characterized in that, The side shell 1 (201) has symmetrically provided guide holes (6) on one side surface. The side shell 2 (202) and the side shell 1 (201) are symmetrically fixedly connected with guide rods (7). The guide rods (7) are slidably connected to the side shell 1 (201) through the guide holes (6).

5. A moving-coil piezoelectric composite loudspeaker according to claim 4, characterized in that, The surface of the second side shell (202) is rotatably connected to a flap (8), and the surface of the first side shell (201) is rotatably connected to a limiting block (10). A limiting groove (9) is formed on the surface of the flap (8), and the limiting block (10) passes through the limiting groove (9) through the surface of the flap (8) and abuts against the flap (8).

6. A moving-coil piezoelectric composite loudspeaker according to claim 5, characterized in that, The limiting block (10) and the flip plate (8) are threadedly connected with locking screws (11), and a knob (12) is fixedly connected to one end of the locking screws (11).

7. A moving-coil piezoelectric composite loudspeaker according to claim 6, characterized in that, A positioning block (13) is fixedly connected to the surface of the flap (8), and the positioning block (13) and the limiting block (10) abut against each other.

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