A miniature high-pitched loudspeaker without a diaphragm

Abstract

The application relates to the field of loudspeaker technology, in particular to a micro high-pitch loudspeaker without a diaphragm, which comprises a frame, a vibration system fixed on the frame and a magnetic circuit system, the vibration system comprises an elastic support body, a ball top and a voice coil, the elastic support body is arranged in a ring shape, the lower end surface of the elastic support body is bonded on the frame, the upper end surface of the elastic support body is bonded with the outer edge of the lower side surface of the ball top, the voice coil is bonded with the middle part of the ball top, and the voice coil is correspondingly matched with the magnetic circuit system, the application keeps the balance and stability of product vibration, and effectively inhibits the division polarization of the loudspeaker vibration system.

Description

Technical Field

[0001] This invention relates to the field of loudspeaker technology, specifically to a miniature tweeter without a diaphragm. Background Technology

[0002] Miniature speakers are widely used in smart terminals such as mobile phones, laptops, and tablets. However, smart terminals are usually small in size and have limited internal space, so they use small tweeters paired with woofers. However, existing miniature speakers use diaphragms as the vibration unit. When high-frequency power is required during use, the characteristics of the diaphragm are required to be high, which makes it impossible for ordinary diaphragms to achieve the desired effect. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a miniature tweeter without a diaphragm.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a miniature tweeter without a diaphragm, comprising a frame, a vibration system fixed on the frame, and a magnetic circuit system. The vibration system includes an elastic support, a dome, and a voice coil. The elastic support is arranged in a ring shape, with its lower end face bonded to the frame and its upper end face bonded to the outer edge of the lower side of the dome. The voice coil is bonded to the center of the dome, and the voice coil is correspondingly matched with the magnetic circuit system.

[0005] Preferably, the connection between the elastic support and the frame and dome is a sealed connection.

[0006] Preferably, the two leads of the voice coil are located on the two short sides of the voice coil.

[0007] Preferably, the two leads of the voice coil are respectively designed with curved arcs that match the shape of the corresponding short side of the voice coil.

[0008] Preferably, the magnetic circuit system includes a magnet, a magnetic cover, and a central pole piece. Side pole pieces are vertically arranged on the upper surface of the magnetic cover at four sides. The magnet is attached to the center of the upper surface of the magnetic cover, and the central pole piece is arranged on the side of the magnet away from the magnetic cover.

[0009] Preferably, the central electrode and the four side electrodes are arranged correspondingly, and there is a gap between the central electrode and the side electrodes, with the voice coil disposed within the gap.

[0010] Compared with the prior art, the beneficial effects of the present invention are: by bonding the elastic support to the frame and the dome, it replaces the existing diaphragm structure, maintains the balance and stability of the product during vibration, and effectively suppresses the polarization segmentation of the speaker vibration system.

[0011] The elastic support design provides the speaker with a sufficiently large radiation area (SD), which is about 20% larger than that of the traditional structure, and the loudness is increased by about 1.5 dB. Attached Figure Description

[0012] Figure 1 This is a front view of the present invention;

[0013] Figure 2 This is a reverse structural diagram of the present invention;

[0014] Figure 3 This is an exploded view of the present invention;

[0015] Figure 4 This is a cross-sectional view of the present invention.

[0016] In the diagram: 1. Basket; 2. Elastic support; 3. Dome; 4. Voice coil; 5. Lead wire; 6. Magnet; 7. Magnet cover; 8. Center pole piece; 9. Side pole pieces. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figures 1 to 4 The present invention provides a technical solution: a miniature tweeter without a diaphragm, comprising a frame, a vibration system fixed on the frame, and a magnetic circuit system. The vibration system includes an elastic support, a dome, and a voice coil. The elastic support is arranged in a ring shape, with its lower end face bonded to the frame and its upper end face bonded to the outer edge of the lower side of the dome. The voice coil is bonded to the middle of the dome, and the voice coil is correspondingly matched with the magnetic circuit system.

[0019] The connection between the elastic support and the frame and dome is a sealed connection.

[0020] An elastic support replaces the existing diaphragm structure, providing the vibration support with sufficient stability and sealing.

[0021] The two leads of the voice coil are located on the two short sides of the voice coil. The two leads are designed with curved shapes to match the corresponding short sides of the voice coil. The voice coil connects to external circuitry via these curved leads to transmit electrical signals.

[0022] The magnetic circuit system includes a magnet, a magnetic cover, and a central pole piece. Side pole pieces are vertically arranged on the four sides of the upper surface of the magnetic cover. The magnet is attached to the center of the upper surface of the magnetic cover, and the central pole piece is arranged on the side of the magnet away from the magnetic cover.

[0023] The central electrode and the four side electrodes are arranged correspondingly, and there is a gap between the central electrode and the side electrodes. The voice coil is disposed in the gap.

[0024] The design between the magnet cover and the side pole pieces can reduce the size of the speaker. Furthermore, the integrated design of the magnet cover and the side pole pieces allows the magnet to be guided to the side pole pieces, so that the center pole piece and the side pole pieces form a magnetic circuit for the voice coil.

[0025] Through this technical solution,

[0026] 1) The design of the elastic support body replaces the original diaphragm support design. The elastic support body plays the role of vibration balance and sealing.

[0027] 2) The elastic support design also provides a sufficiently large radiation area SD, which is about 20% larger than that of the traditional structure, and the loudness is increased by about 1.5dB.

[0028] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A miniature tweeter without a diaphragm, comprising a frame, a vibration system fixed to the frame, and a magnetic circuit system, characterized in that: The vibration system includes an elastic support, a dome, and a voice coil. The elastic support is ring-shaped, with its lower end face bonded to the frame and its upper end face bonded to the outer edge of the lower side of the dome. The voice coil is bonded to the center of the dome and is correspondingly matched with the magnetic circuit system. The connection between the elastic support, the frame, and the dome is sealed. The magnetic circuit system includes a magnet, a magnetic cover, and a center pole piece. Side pole pieces are vertically arranged on the four sides of the upper surface of the magnetic cover. The magnet is attached to the center of the upper surface of the magnetic cover. The center pole piece is located on the side of the magnet away from the magnetic cover. The center pole piece is correspondingly arranged with the four side pole pieces, and there is a gap between the center pole piece and the side pole pieces. The voice coil is located within the gap.

2. A miniature tweeter without a diaphragm according to claim 1, characterized in that: The two leads of the voice coil are located on the two short sides of the voice coil.

3. A miniature tweeter without a diaphragm according to claim 2, characterized in that: The two leads of the voice coil are respectively designed with curved arcs that match the shape of the corresponding short side of the voice coil.

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