Piston high temperature loudspeaker

Abstract

The utility model relates to high temperature environment is with loudspeaker technical field, and specifically is a piston type high temperature loudspeaker, including T iron, magnet, clamping plate, voice coil, elastic wave, basin frame, carbon fibre dust cover, carbon fibre diaphragm, graphite coating ring, elastic fluorine ring, graphite ring and high temperature glue etc. T iron and magnet, magnet and clamping plate are connected through the glue respectively and form permanent magnet magnetic circuit system, and clamping plate and basin frame are fixed with screw, and voice coil is located in magnetic gap and has uniform gap; carbon fibre diaphragm edge is bonded elastic fluorine ring through high temperature resistant glue, and its outer edge graphite groove is filled with graphite ring and contacts with graphite coating ring, and voice coil and elastic wave etc. form vibration system with basin frame, the loudspeaker passes through high temperature resistant material and piston type innovation structure, and high temperature resistant performance is enhanced significantly, guarantees the stable acoustical performance under high temperature environment, improves structural protective property and service life, and has potential cost advantage, can be stably and reliably applied to high temperature scene.

Description

Technical Field

[0001] This utility model relates to the field of loudspeaker technology for high-temperature environments, specifically a piston-type high-temperature loudspeaker. Background Technology

[0002] With the advancement of technology, there is a demand for playing audio sound waves in certain special high-temperature environments (150-300℃). As the core component of audio playback, loudspeakers need to be adapted to these special environmental scenarios. Traditional loudspeakers have been tried in relevant scenarios, but due to their own structural and material properties, they are difficult to meet the stable operating requirements in high-temperature environments.

[0003] Traditional loudspeaker surround materials generally include rubber, cloth, and foam. These materials are prone to aging, deformation, and even failure under high temperatures, which weakens their ability to support and constrain the diaphragm. Deformation of the surround alters the original vibration trajectory of the diaphragm, causing diaphragm motion distortion and severely affecting the acoustic performance of the loudspeaker. Ultimately, this prevents traditional loudspeakers from operating stably and reliably under high temperatures. Therefore, there is an urgent need to develop a piston-type high-temperature loudspeaker to overcome the shortcomings in current practical applications. Utility Model Content

[0004] The purpose of this invention is to provide a piston-type high-temperature loudspeaker to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A piston-type high-temperature loudspeaker includes a permanent magnet magnetic circuit system, a frame, a voice coil, and a vibration system; The permanent magnet magnetic circuit system consists of a T-iron, a magnet, and a clamping plate. The T-iron is fixedly connected to the magnet, the magnet is fixedly connected to the clamping plate, and the clamping plate is fixedly connected to the basin frame. The voice coil is located within the magnetic gap of the permanent magnet magnetic circuit system, and a uniform gap is left between the voice coil and the magnetic gap. The vibration system includes a high-temperature resistant diaphragm, a high-temperature resistant elastic ring, a graphite ring, and a graphite-coated ring. The edge of the high-temperature resistant diaphragm is bonded to the high-temperature resistant elastic ring. A graphite groove is formed on the outer edge of the high-temperature resistant elastic ring. The graphite ring is assembled in the graphite groove and contacts the inner ring of the graphite-coated ring. The graphite-coated ring is fixedly connected to the frame. The voice coil, spider, and frame are fixedly connected and together with the high-temperature resistant diaphragm, form a vibration system.

[0006] As a further embodiment of this invention, the high-temperature resistant diaphragm is a carbon fiber diaphragm.

[0007] As a further embodiment of this invention, the high-temperature resistant elastic ring is an elastic PTFE ring.

[0008] As a further embodiment of this utility model: the T-iron and the magnet, and the magnet and the clamping plate are all fixedly connected by glue.

[0009] As a further embodiment of this utility model, the clamping plate and the basin frame are fixedly connected by screws.

[0010] As a further embodiment of this utility model: the inner ring of the graphite-coated ring is provided with a graphite coating, and the graphite ring is in close contact with the graphite coating.

[0011] As a further embodiment of this invention: the edge of the high-temperature resistant diaphragm is bonded to the high-temperature resistant elastic ring with high-temperature adhesive.

[0012] As a further embodiment of this invention, the vibration system also includes a carbon fiber dust cover, which is fixedly connected to the basin frame by adhesive.

[0013] As a further embodiment of this utility model: the graphite groove on the outer edge of the high-temperature resistant elastic ring is provided with multiple rings, and each graphite groove is equipped with a corresponding graphite ring.

[0014] As a further embodiment of this invention: the voice coil and the spider are both fixedly connected to the frame with glue.

[0015] Compared with the prior art, the beneficial effects of this utility model are: This invention significantly enhances the high-temperature resistance of the piston-type high-temperature loudspeaker. By incorporating a graphite-coated ring and a graphite coating at the edge of the frame, the thermal management of the frame is effectively improved, allowing for rapid heat dissipation and reducing the impact of high temperatures on the overall loudspeaker structure. Simultaneously, the application of a high-temperature resistant carbon fiber diaphragm and a high-temperature resistant elastic PTFE ring ensures that key components of the loudspeaker maintain stable performance under high-temperature conditions, preventing aging and deformation, thus guaranteeing normal operation of the loudspeaker in high-temperature environments. Furthermore, the graphite ring and graphite groove in the innovative piston structure also possess excellent high-temperature resistance, further enhancing the loudspeaker's reliability in high-temperature environments. Its acoustic performance is stable. The innovative piston structure replaces the traditional flexible surround, which changes the vibration mode of the diaphragm. The sliding vibration of the graphite ring in the graphite groove is less affected by high temperature than the bending vibration of the traditional flexible surround. It can reproduce the audio signal more accurately and ensure the stable output of the speaker's acoustic performance in high temperature environment. It reduces the sound distortion caused by high temperature. At the same time, the elasticity of the high temperature resistant elastic PTFE ring can provide suitable support and constraint for the vibration of the diaphragm, which helps to improve the acoustic performance. Its structural protection is improved by using an innovative piston structure to isolate the high temperature outside the diaphragm, so that the high temperature does not affect other components of the speaker, protecting components such as the voice coil, spider, clamp, magnet and T-iron, thereby improving the overall stability and service life of the speaker. In addition, this invention has potential cost advantages. Although it uses some special high-temperature resistant materials and innovative structures, from the overall design perspective, compared with some traditional high-temperature loudspeakers that improve high-temperature resistance through complex structures or the extensive use of expensive materials, this invention simplifies the structure to a certain extent, which may reduce production costs and make it more competitive in the market. Attached Figure Description

[0016] Figure 1 This is a cross-sectional structural diagram of the piston-type high-temperature loudspeaker of this utility model.

[0017] In the diagram: 1-Magnet, 2-Clamping plate, 3-Square frame, 4-Spider, 5-Voice coil, 6-Graphite coated ring, 7-Graphite groove, 8-Elastic PTFE ring, 9-Carbon fiber diaphragm, 10-Graphite ring, 11-T-iron, 12-Graphite coating, 13-Carbon fiber dust cover, 14-High temperature adhesive. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0020] Please see Figure 1 This utility model provides a piston-type high-temperature loudspeaker, which aims to solve the problems of traditional loudspeakers being prone to aging, deformation, and unstable acoustic performance in high-temperature environments. The specific details are as follows: First, a permanent magnet magnetic circuit system is constructed, which consists of a T-iron 11, a magnet 1, a clamping plate 2, and a frame 3. The T-iron 11 and the magnet 1 are fixedly connected by glue, and the other side of the magnet 1 is also fixedly connected to the clamping plate 2 by glue. The three work together to form a constant permanent magnet magnetic circuit system, providing a basic magnetic field guarantee for the speaker's sound production. The other side of the clamp 2 is fixedly connected to the frame 3 by screws. The frame 3 serves as the overall support system for the speaker, providing a stable mounting reference for each component and ensuring the stability of the entire speaker structure.

[0021] This structural design ensures reliable connection of the magnetic circuit system and strong magnetic field stability, laying a solid foundation for the normal operation of the subsequent vibration system.

[0022] Next, the voice coil 5 is installed in the middle of the magnetic gap of the permanent magnet circuit system, and the inner and outer rings of the voice coil 5 and the inner and outer rings of the magnetic gap are all left with uniform gaps (the gaps will vary depending on the size of the voice coil, generally ranging from 0.5 to 0.8 mm).

[0023] This design ensures that the voice coil 5 reciprocates smoothly within the magnetic gap, effectively preventing friction or interference between the voice coil 5 and the magnetic circuit system, guaranteeing the smooth movement of the vibration system, and thus providing the prerequisite for stable output of the loudspeaker's acoustic performance.

[0024] Next, a vibration system and supporting protective structure are constructed. Specifically, the edge of the carbon fiber diaphragm 9 is bonded with an elastic PTFE ring 8 using high-temperature adhesive 14. The outer edge of the elastic PTFE ring 8 is processed with multiple (3-5 rings, depending on the size of the horn) graphite grooves 7. Graphite rings 10 are installed in the graphite grooves 7. The graphite rings 10 are in close contact with the inner ring of the graphite coating ring 6. The inner ring of the graphite coating ring 6 is provided with a graphite coating 12, and its outer ring is fixedly connected to the frame 3. Meanwhile, the voice coil 5, spider 4, carbon fiber dust cover 13 and carbon fiber diaphragm 9 are fixedly connected to the frame 3 with glue, forming a complete vibration system.

[0025] This structural design not only ensures the stability of the connections between the components, but also makes full use of the properties of graphite to provide good protection and reduce friction in high-temperature environments.

[0026] During use, the high-temperature resistant carbon fiber diaphragm 9 and elastic PTFE ring 8 can maintain stable performance in high-temperature environments and will not experience aging or deformation due to high temperatures. The graphite coating ring 6 and graphite coating 12 can effectively improve the thermal management of the frame 3, quickly dissipate heat, and reduce the impact of high temperature on the overall structure of the speaker. The graphite ring 10 and graphite groove 7 also have good high temperature resistance, further enhancing the reliability of the speaker in high temperature environments.

[0027] Meanwhile, the piston-type innovative structure replaces the traditional flexible folded ring, changing the vibration mode of the diaphragm. The sliding vibration of the graphite ring 10 in the graphite groove 7 is less affected by high temperature than the bending vibration of the traditional flexible folded ring, and can more accurately reproduce the audio signal, reducing sound distortion caused by high temperature. The elasticity of the elastic PTFE ring 8 can provide suitable support and constraint for the vibration of the carbon fiber diaphragm 9, which helps to further improve the acoustic performance.

[0028] In addition, this innovative piston structure can effectively isolate the high temperature outside the carbon fiber diaphragm 9, preventing the high temperature from affecting components such as the voice coil 5, spider 4, clamp 2, magnet 1, and T-iron 11, significantly improving the overall stability and service life of the speaker.

[0029] Finally, this novel piston-type high-temperature loudspeaker simplifies the overall structure to a certain extent, reduces production costs, and makes the product more competitive in the market.

[0030] It should be noted that, in this utility model, unless otherwise explicitly specified and limited, the terms "sliding," "rotating," "fixed," and "equipped" should be interpreted broadly. For example, they can refer to welded connections, bolted connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A piston-type high-temperature loudspeaker, characterized in that, Includes a permanent magnet magnetic circuit system, a frame (3), a voice coil (5), and a vibration system; The permanent magnet magnetic circuit system consists of a T-iron (11), a magnet (1) and a clamp (2). The T-iron (11) is fixedly connected to the magnet (1), the magnet (1) is fixedly connected to the clamp (2), and the clamp (2) is fixedly connected to the basin frame (3). The voice coil (5) is located in the magnetic gap of the permanent magnet magnetic circuit system, and a uniform gap is left between the voice coil (5) and the magnetic gap. The vibration system includes a high-temperature resistant diaphragm, a high-temperature resistant elastic ring, a graphite ring (10) and a graphite-coated ring (6). The edge of the high-temperature resistant diaphragm is bonded to the high-temperature resistant elastic ring. A graphite groove (7) is provided on the outer edge of the high-temperature resistant elastic ring. The graphite ring (10) is assembled in the graphite groove (7) and the graphite ring (10) contacts the inner ring of the graphite-coated ring (6). The graphite-coated ring (6) is fixedly connected to the frame (3). The voice coil (5), the spider (4) are fixedly connected to the frame (3) and together with the high-temperature resistant diaphragm, they form a vibration system.

2. The piston-type high-temperature loudspeaker according to claim 1, characterized in that, The high-temperature resistant diaphragm is a carbon fiber diaphragm (9).

3. The piston-type high-temperature loudspeaker according to claim 1, characterized in that, The high-temperature resistant elastic ring is an elastic PTFE ring (8).

4. The piston-type high-temperature loudspeaker according to claim 1, characterized in that, The T-iron (11) and the magnet (1), and the magnet (1) and the clamp (2) are all fixedly connected by glue.

5. The piston-type high-temperature loudspeaker according to claim 1, characterized in that, The clamp (2) and the basin frame (3) are fixedly connected by screws.

6. The piston-type high-temperature loudspeaker according to claim 1, characterized in that, The inner ring of the graphite-coated ring (6) is provided with a graphite coating (12), and the graphite ring (10) is in close contact with the graphite coating (12).

7. The piston-type high-temperature loudspeaker according to claim 1, characterized in that, The edge of the high-temperature resistant diaphragm is bonded to the high-temperature resistant elastic ring with high-temperature adhesive (14).

8. The piston-type high-temperature loudspeaker according to claim 1, characterized in that, The vibration system also includes a carbon fiber dust cover (13), which is fixedly connected to the basin frame (3) by glue.

9. The piston-type high-temperature loudspeaker according to claim 1, characterized in that, The graphite groove (7) on the outer edge of the high-temperature resistant elastic ring is provided with multiple rings, and each graphite groove (7) is equipped with a corresponding graphite ring (10).

10. The piston-type high-temperature loudspeaker according to claim 1, characterized in that, The voice coil (5) and the spider (4) are both fixedly connected to the frame (3) with glue.

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