CN-111601221-B - High-pitch sounding device

CN111601221BCN 111601221 BCN111601221 BCN 111601221BCN-111601221-B

Abstract

The application discloses a high-pitch sounding device. The high-pitch sound production device comprises a frame structure, a magnetic circuit system and a vibration assembly, wherein the frame structure comprises a basin frame, the basin frame is provided with a containing groove, a bearing table is formed above the containing groove, the magnetic circuit system comprises a central magnetic component, a through hole is formed in the central magnetic component, the magnetic circuit system is arranged on the bearing table, the vibration assembly comprises a vibrating diaphragm, the edge of the vibrating diaphragm is connected with the frame structure, the vibrating diaphragm covers the through hole of the central magnetic component, the vibrating diaphragm is communicated with the containing groove through the through hole, and sound absorbing materials are arranged in the containing groove. The application has the technical effect of expanding the space of the rear acoustic cavity of the high-pitch sound generating device.

Inventors

BO YUNFEI
ZHANG DI
ZHOU YONG

Assignees

歌尔股份有限公司

Dates

Publication Date: 20260512
Application Date: 20200528

Claims (8)

1. A high pitch sound producing device, comprising: The frame structure comprises a basin frame, wherein the basin frame is provided with a containing groove, and a bearing table is formed above the containing groove; the magnetic circuit system comprises a central magnetic part, a through hole is formed in the central magnetic part, and the magnetic circuit system is arranged on the bearing table; The vibration assembly comprises a vibrating diaphragm, the edge of the vibrating diaphragm is connected with the frame structure, the vibrating diaphragm shields the through hole of the central magnetic component, and the vibrating diaphragm is communicated with the accommodating groove through the through hole; The sound absorbing material is arranged in the accommodating groove, and is provided with a hollowed hole, the hollowed hole corresponds to the position of the through hole, the shape of the hollowed hole can be matched with that of the through hole, and the through hole and the hollowed hole are axially parallel or coaxially arranged; the bottom surface of the accommodating groove is provided with a sound guide protrusion, the sound guide protrusion extends along the axial direction of the through hole towards the direction protrusion close to the vibrating diaphragm, the sound absorbing material is arranged around the sound guide protrusion, and the sound guide protrusion guides air and vibration to the sound absorbing material.
2. The high pitch sound generating apparatus according to claim 1, wherein the hollowed-out hole has a diameter smaller than that of the through hole.
3. The high pitch sound emitting device of claim 1, wherein the sound absorbing material is a sound absorbing foam or a non-foaming sound absorbing material.
4. The high pitch sound emitting device according to claim 1, wherein a side surface of the sound guiding protrusion is an inclined arc surface.
5. The high pitch sound emitting device of claim 1, wherein the sound guiding protrusion has an arcuate top surface.
6. The treble sound generating apparatus according to claim 1, wherein a dimension of the sound guiding protrusion in a radial direction of the through hole is smaller than a diameter of the through hole.
7. The high pitch sound emitting device according to claim 1, wherein a height of the sound guiding protrusion is lower than a depth of the receiving groove.
8. The high-pitch sound generating device according to claim 1, wherein the frame structure comprises an upper shell, the upper shell is buckled on the basin frame, the magnetic circuit system is located in the upper shell, the upper shell is provided with a sound outlet, and one side, far away from the magnetic circuit system, of the vibrating diaphragm is communicated with the sound outlet.

Description

High-pitch sounding device Technical Field The application belongs to the technical field of electroacoustic transduction, and particularly relates to a high-pitch sounding device. Background With the development of electroacoustic transduction technology, sound generating devices are widely used in daily life of people. Not only the special audio-visual equipment is provided with the sounding device, for example, the vehicle carrier and the sounding device can be arranged in the building, so that the device is convenient for daily use. In the art, different types of sound generating devices can be designed according to different sound frequency bands and different sound volumes to be generated so as to achieve better acoustic effects. For example, large woofers and tweeters existing in the art may be used as home audio, car audio, and the like. The tweeter has a smaller overall structure than the woofer due to its own acoustic performance requirements. In order to enable the tweeter to meet the requirements of a narrow assembly space, the tweeter is further compactly designed by a person skilled in the art. This design compresses the back volume space of the tweeter. When the tweeter vibrates to sound, air in the rear cavity can increase in air pressure due to factors such as vibration and temperature. This back causes the air in the rear chamber to more easily resonate, thereby affecting the acoustic performance of the tweeter. Disclosure of Invention It is an object of the present application to provide an improved high pitch sound emitting device. According to an aspect of the present application, there is provided a treble sound producing apparatus comprising: The frame structure comprises a basin frame, wherein the basin frame is provided with a containing groove, and a bearing table is formed above the containing groove; the magnetic circuit system comprises a central magnetic part, a through hole is formed in the central magnetic part, and the magnetic circuit system is arranged on the bearing table; The vibration assembly comprises a vibrating diaphragm, the edge of the vibrating diaphragm is connected with the frame structure, the vibrating diaphragm shields the through hole of the central magnetic component, and the vibrating diaphragm is communicated with the accommodating groove through the through hole; And the sound absorbing material is arranged in the accommodating groove. Optionally, the sound absorbing material has a hollow hole, and the hollow hole corresponds to the position of the through hole. Optionally, the diameter of the hollowed-out hole is smaller than the diameter of the through hole. Optionally, the sound absorbing material is sound absorbing foam or non-foaming sound absorbing material. Optionally, an acoustic guide protrusion is formed on a bottom surface of the accommodating groove, the acoustic guide protrusion extends along an axial direction of the through hole toward a direction close to the diaphragm, and the sound absorbing material is disposed around the acoustic guide protrusion. Optionally, the side surface of the sound guiding protrusion is an inclined arc surface. Optionally, the sound guiding protrusion has an arcuate top surface. Optionally, the dimension of the sound guiding protrusion along the radial direction of the through hole is smaller than the diameter of the through hole. Optionally, the height of the sound guiding protrusion is lower than the depth of the accommodating groove. Optionally, the frame structure includes the epitheca, the epitheca lock is in on the basin frame, magnetic circuit is located in the epitheca, the epitheca has the sound hole, the vibrating diaphragm keep away from magnetic circuit's one side with the sound hole intercommunication. The application has the technical effects of increasing the volume of the sound cavity in the high-pitch sound generating device and improving the acoustic performance of the high-pitch sound generating device. Other features of the present application and its advantages will become apparent from the following detailed description of exemplary embodiments of the application, which proceeds with reference to the accompanying drawings. Drawings The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application. FIG. 1 is a side cross-sectional view of a tweeter sound emitting device according to one embodiment of the present application; FIG. 2 is a side cross-sectional view of a tweeter sound emitting device according to another embodiment of the present application; FIG. 3 is a schematic diagram of the effect of the tweeter device provided by the present application on airflow; fig. 4 is a graph showing the sensitivity test of the high-pitch sounding device provided by the application and the sensitivity test of the prior art. Reference numera