High temperature resistant loudspeaker

Abstract

The utility model relates to high temperature resistant loudspeaker technical field relates to a kind of high temperature resistant loudspeaker more particularly, including the support with first installation part and second installation part, to the second installation part is equipped with pronunciation unit, pronunciation unit is equipped with the air flow structure that the heat generated by pronunciation unit can be dissipated, coil in pronunciation unit is wound on temperature-resistant pipe, to form voice coil, and coil surface has a layer of high temperature resistant layer.The utility model is by using high temperature resistant material and setting air flow structure, so that loudspeaker can still keep stable performance and longer service life under high temperature environment.

Description

Technical Field

[0001] This utility model relates to the field of high-temperature resistant loudspeaker technology, and in particular to a high-temperature resistant loudspeaker. Background Technology

[0002] A loudspeaker is a transducer that converts electrical signals into sound signals. The performance of a loudspeaker greatly affects sound quality. While it is the weakest component in an audio system, it is also one of the most crucial for sound effects. There are many types of loudspeakers, with prices varying significantly. Audio energy, through electromagnetic, piezoelectric, or electrostatic effects, causes the cone or diaphragm to vibrate and resonate with the surrounding air, producing sound. When transmitting sound, the loudspeaker body generates heat, raising its internal temperature. Prolonged use can damage a loudspeaker. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a high-temperature resistant loudspeaker that can effectively dissipate the generated heat and has good high-temperature resistance, thus ensuring the service life of the loudspeaker.

[0004] To solve the first technical problem mentioned above, the technical solution of this utility model is: a high-temperature resistant loudspeaker, comprising: a bracket having a first mounting part and a second mounting part, a sound-producing unit being provided on the second mounting part, an airflow structure being provided on the sound-producing unit to dissipate the heat generated by the sound-producing unit, a coil in the sound-producing unit being wound on a heat-resistant tube to form a voice coil, and the surface of the coil having a high-temperature resistant layer.

[0005] Furthermore, the sound-producing unit includes a diaphragm, a washer, a magnet, a voice coil, and a U-cup. The washer, magnet, and voice coil are located inside the U-cup. The diaphragm is connected to the voice coil. The washer and magnet are located inside a heat-resistant tube from bottom to top. The diaphragm and U-cup are respectively fixed to both ends of the second mounting part. An airflow space is formed between the inner wall of the U-cup and the voice coil.

[0006] Furthermore, the second mounting part includes an inner disc integrated with the bracket. The inner disc is provided with a mounting groove. The bottom circumferential wall of the mounting groove is provided with an annular boss extending radially inward. The U-cup is installed in the mounting groove, and the bottom surface of the U-cup's mouth contacts the annular boss. The annular boss is provided with a break.

[0007] Furthermore, the second mounting part also includes a diaphragm fixing cavity located on the back of the inner disk. The mounting through groove communicates with the diaphragm fixing cavity, and the diameter of the diaphragm fixing cavity is larger than the diameter of the mounting through groove. The diaphragm is installed in the diaphragm fixing cavity.

[0008] Furthermore, a terminal block assembly is provided on the bracket at one end of the inner disc, and a wire groove communicating with the diaphragm fixing cavity is provided on the side wall of the bracket. The wires of the terminal block assembly pass through the wire groove and are connected to the diaphragm.

[0009] Furthermore, the airflow structure includes multiple vents on the U-cup, which are connected to the airflow space.

[0010] Furthermore, the first mounting part includes lugs symmetrically arranged on both sides of the bracket. The top of the lugs is provided with an inclined plate perpendicular to the side wall of the lugs. The inclined plate has a connection end hole for connecting with an external device, and a silicone pad is provided on the connection end hole.

[0011] Furthermore, the high-temperature resistant layer uses SV high-temperature resistant paint material, and the high-temperature resistant pipe uses KAPTON high-temperature resistant pipe material.

[0012] Furthermore, the diaphragm is made of one or more of PEN, PE I, or PI materials.

[0013] Furthermore, the magnets used are N35H high-temperature resistant magnets.

[0014] After adopting the above technical solution, the beneficial effects of this utility model are:

[0015] 1. By using materials such as KAPTON tubing as the voice coil skeleton and coating the coil surface with SV high-temperature resistant varnish, a double high-temperature protection is formed, which fundamentally prevents the voice coil from burning out due to adhesive failure at high temperatures, and greatly improves the lifespan of the core heating element.

[0016] 2. By setting multiple vents on the U-cup, a highly efficient airflow structure is formed. This structure can utilize the reciprocating motion of the diaphragm when the speaker is working to promote convection between the internal and external air like a "pump", thereby quickly removing the heat generated by components such as the voice coil and magnet, and effectively reducing the internal operating temperature.

[0017] 3. High-temperature resistant magnets such as N35H are used to ensure that the magnetic flux of the magnetic circuit remains stable in high-temperature environments, avoiding sensitivity reduction and performance degradation caused by magnet demagnetization, and ensuring the stability of the speaker's output sound pressure.

[0018] 4. The diaphragm is made of high-temperature resistant engineering plastics such as PEN, PE I or PI, which ensures that the diaphragm can maintain excellent mechanical properties and shape stability at high temperatures, avoiding deformation and aging. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0021] Figure 3 This is a cross-sectional view of the present invention;

[0022] Figure 4 This is a schematic diagram of the support structure in this utility model. Detailed Implementation

[0023] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0024] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this embodiment provides a high-temperature resistant loudspeaker, which mainly includes a bracket 1 and a sound-producing unit 2.

[0025] The bracket 1 is made entirely of heat-resistant engineering plastic and has a first mounting part 11 and a second mounting part 12. The first mounting part 11 is used to fix the entire speaker to an external device. The first mounting part 11 includes lugs 111 symmetrically arranged on both sides of the bracket 1. Each lug 111 has a sloping plate 112 perpendicular to the side wall of the lug 111 at its top. The sloping plate 112 has a connection end hole 113. During installation, fasteners such as bolts are used to connect to the external device through the connection end hole 113. For shock absorption and sealing, a silicone pad 114 is also provided on the connection end hole 113.

[0026] The second mounting part 12 is used to mount the sound-emitting unit, and it includes a disc-shaped structure integrally injection molded with the bracket 1, referred to as the inner disc 121. The center of the inner disc 121 has a mounting groove 122 for accommodating the U-cup 24. A ring-shaped boss 123 extending radially inward is provided on the bottom circumferential wall of the mounting groove 122. During assembly, the bottom surface of the U-cup 24 is precisely supported and contacts the ring-shaped boss 123; to facilitate disassembly or observation of whether the U-cup 24 is in place, one or more breaks 124 are provided on the ring-shaped boss 123.

[0027] In addition, a diaphragm fixing cavity 125 is provided on the bracket 1 located on the back of the inner disc 121. The diaphragm fixing cavity 125 is connected to the mounting slot 122, and its diameter is larger than that of the mounting slot 122. The diaphragm 21 is installed and fixed in the diaphragm fixing cavity 125.

[0028] The sound-producing unit 2 is primarily used for sound production. It includes a diaphragm 21, a washer 22, a magnet 23, a voice coil 25, and a U-cup 24. The washer 22, magnet 23, and voice coil 25 are all housed inside the U-cup 24. Specifically, the voice coil 25 is formed by winding a metal coil around a heat-resistant tube 251. This heat-resistant tube 251 is preferably made of KAPTON tubing, which has an extremely high heat resistance rating. Furthermore, the surface of the wound coil is coated with a high-temperature resistant layer using SV heat-resistant varnish. This design ensures the reliability of the voice coil 25 under high temperature and high power conditions.

[0029] The washer 22 and magnet 23 are arranged from bottom to top inside the heat-resistant tube 251. The diaphragm 21 is connected to the top of the voice coil 25 and fixed to the stepped surface of the diaphragm fixing cavity 125 by the edge. The U-cup 24 is fixedly installed in the mounting slot 122, so that the diaphragm 21 and the U-cup 24 are respectively fixed at both ends of the second mounting part 12, together forming a complete magnetic circuit and vibration system.

[0030] For wiring, a terminal block assembly 3 is provided on the bracket 1 at one end of the inner disc 121. A wire groove 13 communicating with the diaphragm fixing cavity 125 is provided on the side wall of the bracket 1. After the wires 31 of the terminal block assembly 3 pass through this wire groove 13, they are soldered to the leads on the diaphragm 21 or directly to the leads of the voice coil 25 to realize the transmission of electrical signals.

[0031] To dissipate the heat generated by the voice coil 25 and magnet 23, an airflow structure is incorporated into the sound-emitting unit 2. This structure primarily comprises multiple vents 241 located at the top of the U-cup 24. The diameter of the U-cup 24 is larger than that of the voice coil 25, creating an airflow space between the inner wall of the U-cup 24 and the voice coil 25. This airflow space is connected to the vents 241, thus forming the airflow structure. When the speaker operates, the diaphragm 21 reciprocates at high speed, driving the internal air to exchange with the external air through the vents 241 and the airflow space, creating an effective "breathing" effect. This rapidly dissipates the heat generated by the voice coil 25 and magnet 23 into the external environment, achieving active heat dissipation.

[0032] In this embodiment, the diaphragm 21 is made of one or more composite materials selected from PEN, PEI, or PI, all of which have excellent high-temperature resistance and mechanical strength. The magnet 23 is an N35H type high-temperature resistant neodymium iron boron magnet, whose operating temperature is much higher than that of ordinary magnets, effectively preventing high-temperature demagnetization.

[0033] In summary, this invention, by employing high-temperature resistant materials and incorporating an airflow structure, enables the speaker to maintain stable performance and a long service life even in high-temperature environments. The high-temperature resistant tube 251 and high-temperature resistant layer of the voice coil 25 in the sound unit 2 ensure the reliability of the voice coil 25 under high-temperature and high-power operation. The use of high-temperature resistant materials for components such as the diaphragm 21 and magnet 23 also prevents high temperatures from damaging their performance. An effective "breathing" effect is achieved through the vent 241 at the top of the U-cup 24 and the airflow space between the inner wall of the U-cup 24 and the voice coil. During speaker operation, the high-speed reciprocating motion of the diaphragm 21 drives internal air exchange, rapidly dissipating the heat generated by the voice coil 25 and magnet 23 to the external environment. This active heat dissipation method significantly improves the speaker's heat dissipation efficiency, further ensuring the speaker's normal operation in high-temperature environments.

[0034] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A high-temperature resistant loudspeaker, characterized in that, include: The bracket has a first mounting part and a second mounting part. A sound-producing unit is provided on the second mounting part. The sound-producing unit is provided with an airflow structure that can dissipate the heat generated by the sound-producing unit. The coil in the sound-producing unit is wound on a heat-resistant tube to form a voice coil, and the surface of the coil has a high-temperature resistant layer.

2. The high-temperature resistant loudspeaker according to claim 1, characterized in that, The sound-producing unit includes a diaphragm, a washer, a magnet, a voice coil, and a U-cup. The washer, magnet, and voice coil are located inside the U-cup. The diaphragm is connected to the voice coil. The washer and magnet are located inside a heat-resistant tube from bottom to top. The diaphragm and U-cup are respectively fixed to the two ends of the second mounting part. An airflow space is formed between the inner wall of the U-cup and the voice coil.

3. The high-temperature resistant loudspeaker according to claim 2, characterized in that, The second mounting part includes an inner disc integrated with the bracket. The inner disc has a mounting groove. The bottom circumferential wall of the mounting groove has an annular boss extending radially inward. The U-cup is installed in the mounting groove, and the bottom surface of the U-cup's opening contacts the annular boss. The annular boss has a break.

4. The high-temperature resistant loudspeaker according to claim 3, characterized in that, The second mounting section also includes a diaphragm fixing cavity located on the back of the inner disc. The mounting slot communicates with the diaphragm fixing cavity, and the diameter of the diaphragm fixing cavity is larger than the diameter of the mounting slot. The diaphragm is installed in the diaphragm fixing cavity.

5. The high-temperature resistant loudspeaker according to claim 4, characterized in that, A terminal block assembly is provided on the bracket at one end of the inner disc. The side wall of the bracket is provided with a wire groove that communicates with the diaphragm fixing cavity. The wires of the terminal block assembly pass through the wire groove and are connected to the diaphragm.

6. The high-temperature resistant loudspeaker according to claim 2, characterized in that, The airflow structure includes multiple vents on the U-cup, which are connected to the airflow space.

7. The high-temperature resistant loudspeaker according to claim 1, characterized in that, The first mounting part includes lugs symmetrically arranged on both sides of the bracket. The top of the lugs is provided with an inclined plate perpendicular to the side wall of the lugs. The inclined plate has a connection end hole for connecting with an external device, and a silicone pad is provided on the connection end hole.

8. The high-temperature resistant loudspeaker according to claim 1, characterized in that, The high-temperature resistant layer uses SV high-temperature resistant paint material, and the high-temperature resistant pipe uses KAPTON high-temperature resistant pipe material.

9. The high-temperature resistant loudspeaker according to claim 2, characterized in that, The diaphragm is made of one or more of the following materials: PEN, PEI, or PI.

10. The high-temperature resistant loudspeaker according to claim 1, characterized in that, The magnets are N35H high-temperature resistant magnets.

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